Fireplace Flame-Extinguishing Method and Fireplace

Abstract

The present invention provides a fireplace flame-extinguishing method, including the following steps: S1: when a shutdown command is received, stopping a heating element from heating a liquid fuel in a vaporization chamber of a vaporization device; and S2: injecting a liquid fuel having a temperature lower than a boiling point of the liquid fuel into the vaporization chamber of the vaporization device, to decrease a temperature of the liquid fuel in the vaporization chamber below the boiling point of the liquid fuel. According to the present invention, the liquid fuel having the temperature lower than the boiling point of the liquid fuel is injected into the vaporization chamber during a flame-extinguishing stage to quickly decrease the temperature of the liquid fuel in the vaporization chamber, reducing an amount of a vaporized fuel outputted to the burner, thereby realizing quick flame extinguishment. The present invention further provides a fireplace.

Claims

1. A fireplace flame-extinguishing method, operating in a fireplace, characterized by comprising the following steps: S1: when a shutdown command is received, stopping a heating element (103) from heating a liquid fuel in a vaporization chamber (101) of a vaporization device (1); and S2: injecting a liquid fuel having a temperature lower than a boiling point of the liquid fuel into the vaporization chamber (101) of the vaporization device (1), to decrease a temperature of the liquid fuel in the vaporization chamber (101) below the boiling point of the liquid fuel.

2. The fireplace flame-extinguishing method according to claim 1, characterized in that step S2 comprises: S21A: determining whether a time t1 has passed; if yes, executing S22A; if no, waiting and executing S21A; and S22A: injecting a liquid fuel having a temperature lower than a boiling point of the liquid fuel into the vaporization chamber (101) of the vaporization device (1), to decrease a temperature of the liquid fuel in the vaporization chamber (101) below the boiling point of the liquid fuel; or step S2 comprises: S21B: determining whether a temperature of the burner (2), the heating element (103), or the liquid fuel in the vaporization chamber (101) has been decreased to a first preset temperature; if yes, executing S22B; if no, waiting and executing S21B; and S22B: injecting a liquid fuel having a temperature lower than a boiling point of the liquid fuel into the vaporization chamber (101) of the vaporization device (1), to decrease a temperature of the liquid fuel in the vaporization chamber (101) below the boiling point of the liquid fuel; or step S2 comprises: S21C: determining whether a time t2 has passed; if yes, executing S22C; if no, waiting and executing S21C; S22C: determining whether a temperature of a burner (2), the heating element (103), or the liquid fuel in the vaporization chamber (101) has been decreased to a second preset temperature; if yes, executing S23C; if no, waiting and executing S22C; and S23C: injecting a liquid fuel having a temperature lower than a boiling point of the liquid fuel into the vaporization chamber (101) of the vaporization device (1), to decrease a temperature of the liquid fuel in the vaporization chamber (101) below the boiling point of the liquid fuel; or step S2 comprises: S21D: determining whether, upon injecting a liquid fuel having a temperature lower than a boiling point of the liquid fuel into the vaporization chamber (101), a maximum heat absorption capacity of the liquid fuel injected into the vaporization chamber (101) is greater than heat required to be released for decreasing the temperature of the liquid fuel in the current vaporization chamber (101) below its boiling point; if yes, executing S22D; if no, waiting and executing S21D; and S22D: injecting a liquid fuel having a temperature lower than a boiling point of the liquid fuel into the vaporization chamber (101) of the vaporization device (1), to decrease the temperature of the liquid fuel in the vaporization chamber (101) below the boiling point of the liquid fuel.

3. The fireplace flame-extinguishing method according to claim 2, characterized in that, in step S21D, the step of acquiring, upon injecting a liquid fuel having a temperature lower than a boiling point of the liquid fuel into the vaporization chamber (101), a maximum heat absorption capacity of the liquid fuel injected into the vaporization chamber (101) comprises: S21D-A1: acquiring a maximum capacity of the liquid fuel capable of being injected into the vaporization chamber (101) and a temperature of the liquid fuel to be injected into the vaporization chamber (101); and S21D-A2: obtaining, upon injecting a liquid fuel having a temperature lower than the boiling point of the liquid fuel into the vaporization chamber (101), a maximum heat absorption capacity of the liquid fuel injected into the vaporization chamber (101), based on the maximum capacity of the liquid fuel capable of being injected into the vaporization chamber (101) and the temperature of the liquid fuel to be injected into the vaporization chamber (101); and in step S21D, the step of acquiring the heat required to be released for decreasing the temperature of the liquid fuel in the current vaporization chamber (101) below its boiling point comprises: S21D-B1: acquiring a temperature of the liquid fuel in the current vaporization chamber (101) and a capacity of the liquid fuel in the current vaporization chamber (101); and S21D-B2: acquiring the heat required to be released for decreasing the temperature of the liquid fuel in the current vaporization chamber (101) below its boiling point, based on the temperature of the liquid fuel in the current vaporization chamber (101) and the capacity of the liquid fuel in the current vaporization chamber (101); wherein in step S21D-A1, the step of acquiring a maximum capacity C1 of the liquid fuel capable of being injected into the vaporization chamber (101) comprises: S21D-A11: acquiring a current capacity C1 of the liquid fuel in the vaporization chamber (101) and a maximum capacity C2 of the liquid fuel capable of being accommodated in the vaporization chamber (101); and S21D-A12: obtaining a maximum capacity C3 of the liquid fuel capable of being injected into the vaporization chamber (101) currently based on the current capacity C1 of the liquid fuel in the vaporization chamber (101) and the maximum capacity C2 of the liquid fuel capable of being accommodated in the vaporization chamber (101), wherein ##STR00003## in step S2, a stage of injecting the liquid fuel into the vaporization chamber (101) refers to injecting the liquid fuel into the vaporization chamber (101) until a maximum capacity of the vaporization chamber (101) is reached.

4. The fireplace flame-extinguishing method according to claim 2, characterized in that a value of the time t1 in step S21A is any one from 20 seconds to 180 seconds; and a value of the time t2 in step S21C is any one from 20 seconds to 180 seconds.

5. The fireplace flame-extinguishing method according to claim 1, characterized in that, in step S1, after the heating element (103) stops heating the liquid fuel in the vaporization chamber (101), a first heat dissipation device (7) is started immediately or after waiting for a time t3 to dissipate heat from the vaporization chamber (101).

6. The fireplace flame-extinguishing method according to claim 1, characterized by comprising: S3: determining whether the temperature of the liquid fuel in the vaporization chamber (101) of the vaporization device (1) has been decreased to a third preset temperature; if yes, executing S4; if no, waiting and executing S3; and S4: extracting and delivering the liquid fuel in the vaporization device (1) back to a liquid storage device (3) until a liquid level of the liquid fuel in the vaporization chamber (101) reaches a preset safe level or falls below the preset safe level.

7. The fireplace flame-extinguishing method according to claim 6, characterized in that, in step S3, during the waiting process, a second heat dissipation device (12) is started to dissipate heat from the vaporization chamber (101); in step S2, the liquid fuel injected into the vaporization chamber (101) originates from the liquid storage device (3); the liquid storage device (3) delivers the liquid fuel to the vaporization device (1) via a liquid supply device (4), and the liquid storage device (3) extracts the liquid fuel from the vaporization device (1) via a liquid return device (8); the liquid supply device (4) has a one-way cutoff function for preventing the liquid fuel in the vaporization device (1) from flowing back to the liquid storage device (3), and the liquid return device (8) has a one-way cutoff function for preventing the liquid fuel in the liquid storage device (3) from flowing back to the vaporization device (1); the liquid supply device (4) is capable of delivering the liquid fuel in the liquid storage device (3) to the vaporization device (1) at a stable flow rate, and the flow rate at which the liquid supply device (4) delivers the liquid fuel is adjustable within a range; and in step S2, during the process of injecting the liquid fuel into the vaporization chamber (101) of the vaporization device (1), the liquid fuel is injected into the vaporization chamber (101) at a maximum achievable injection speed for injecting the liquid fuel into the vaporization chamber (101).

8. The fireplace flame-extinguishing method according to claim 1, characterized in that the vaporization chamber (101) of the vaporization device (1) comprises a first injection port (1011) for injecting the liquid fuel into the vaporization chamber (101); the first injection port (1011) is located at a bottom of the vaporization chamber (101) or on a side wall close to the bottom; the vaporization device (1) comprises a liquid level control chamber (102); the liquid level control chamber (102) comprises a second injection port (1021) for injecting the liquid fuel into the liquid level control chamber (102), and a liquid fuel outlet (1022) for outputting the liquid fuel in the liquid level control chamber (102); the liquid fuel outlet (1022) is in communication with the first injection port (1011); the liquid fuel outlet (1022) is located at a bottom of the liquid level control chamber (102) or on a side wall close to the bottom; and the second injection port (1021) is located at the bottom of the liquid level control chamber (102) or on the side wall close to the bottom; in step S2, the liquid fuel is injected into the liquid level control chamber (102) via the second injection port (1021), and the liquid fuel in the liquid level control chamber (102) is injected into the vaporization chamber (101) through the liquid fuel outlet (1022) and the first injection port (1011) that are in communication with each other; the liquid fuel injected into the vaporization chamber (101) of the vaporization device (1) is a liquid fuel at room temperature; and the fireplace is an alcohol fireplace, and accordingly, the liquid fuel is alcohol.

9. A fireplace, comprising: a burner (2), configured to combust a liquid fuel after the liquid fuel is vaporized; a vaporization device (1), provided with a vaporization chamber (101), wherein the vaporization chamber (101) is connected to the burner (2), and the vaporization device (1) is configured to vaporize the liquid fuel in the vaporization chamber (101) and deliver the vaporized liquid fuel to the burner (2) for combustion; a liquid storage device (3), configured to store the liquid fuel; a liquid supply device (4), connecting the liquid storage device (3) and the vaporization device (1) to deliver the liquid fuel in the liquid storage device (3) to the vaporization chamber (101) of the vaporization device (1); and a control device (5), connected to the liquid supply device (4), and configured to, during a normal operating stage of the fireplace, control the liquid supply device (4) to operate so as to deliver the liquid fuel in the liquid storage device (3) to the vaporization chamber (101) of the vaporization device (1), as well as configured to, during a flame-extinguishing stage of the fireplace, control the liquid supply device (4) to operate so as to deliver the liquid fuel in the liquid storage device (3) to the vaporization chamber (101) of the vaporization device (1).

10. The fireplace according to claim 9, wherein: the vaporization device (1) comprises a heating element (103) for heating the liquid fuel in the vaporization chamber (101), the control device (5) is connected to the heating element (103) so as to control an operating state of the heating element (103); the vaporization device (1) comprises a liquid level control chamber (102); the vaporization chamber (101) comprises a first injection port (1011) for injecting the liquid fuel into the vaporization chamber (101); the liquid level control chamber (102) comprises a second injection port (1021) for injecting the liquid fuel into the liquid level control chamber (102), and a liquid fuel outlet (1022) for outputting the liquid fuel in the liquid level control chamber (102); the liquid fuel outlet (1022) is in communication with the first injection port (1011); the liquid supply device (4) is connected to the second injection port (1021) of the liquid level control chamber (102); the first injection port (1011) is located at a bottom of the vaporization chamber (101) or on a side wall close to the bottom of the vaporization chamber (101); the liquid fuel outlet (1022) is located at a bottom of the liquid level control chamber (102) or on a side wall close to the bottom of the liquid level control chamber (102); the second injection port (1021) is located at the bottom of the liquid level control chamber (102) or on the side wall close to the bottom of the liquid level control chamber (102); the fireplace comprises a liquid fuel amount detection structure (6) for detecting an amount of the liquid fuel in the vaporization chamber (101), and the control device (5) is connected to the liquid fuel amount detection structure (6) to acquire the amount of the liquid fuel in the vaporization chamber (101); the liquid fuel amount detection structure (6) is a liquid level detection structure comprising a low liquid level detection probe (601), a medium liquid level detection probe (602), and a high liquid level detection probe (603), wherein the low liquid level detection probe (601) is closer to a bottom surface of the vaporization chamber (101) than the medium liquid level detection probe (602), wherein the medium liquid level detection probe (602) is closer to the bottom surface of the vaporization chamber (101) than the high liquid level detection probe (603); the liquid fuel amount detection structure (6) comprises a safe liquid level detection probe (604); the heating element (103) is close to the bottom surface of the vaporization chamber (101); the low liquid level detection probe (601) is positioned higher than a side of the heating element (103) away from the bottom surface of the vaporization chamber (101); the safe liquid level detection probe (604) is positioned at a height near the heating element (103); the safe liquid level detection probe (604) is closer to the bottom surface of the vaporization chamber (101) than the low liquid level detection probe (601); the liquid fuel amount detection structure (6) is disposed in the liquid level control chamber (102); the fireplace comprises a first heat dissipation device (7) for dissipating heat from the vaporization chamber (101), the first heat dissipation device (7) employs air for heat dissipation, wherein an air outlet of the first heat dissipation device (7) is disposed toward the vaporization chamber (101), and the first heat dissipation device (7) is disposed below the vaporization chamber (101); the fireplace comprises a liquid return device (8), the liquid return device (8) connects the liquid storage device (3) and the vaporization device (1) to deliver the liquid fuel in the vaporization device (1) to the liquid storage device (3); the control device (5) is connected to the liquid return device (8), and during the flame-extinguishing stage of the fireplace, controls the liquid return device (8) to operate when a temperature of the liquid fuel in the vaporization chamber (101) falls below a preset value, so as to deliver the liquid fuel in the vaporization device (1) to the liquid storage device (3); the liquid supply device (4) has a one-way cutoff function for preventing the liquid fuel in the vaporization device (1) from flowing back to the liquid storage device (3), and the liquid return device (8) has a one-way cutoff function for preventing the liquid fuel in the liquid storage device (3) from flowing back to the vaporization device (1); the fireplace comprises a first temperature sensor (9) for detecting the temperature of the liquid fuel in the vaporization chamber (101), and a second temperature sensor (10) for detecting a temperature of the burner (2), wherein the first temperature sensor (9) and the second temperature sensor (10) are connected to the control device (5); and the fireplace comprises a housing (11), and a second heat dissipation device (12) for dissipating heat from an interior of the housing (11), wherein the vaporization device (1), the liquid supply device (4), the control device (5), and the liquid return device (8) are disposed within the housing (11), wherein the liquid storage device (3) is inside the housing (11) or externally mounted, wherein a flame outlet, a part with a flame outlet, or the entirety of the burner (2) is exposed outside the housing (11), wherein the second heat dissipation device (12) employs air for heat dissipation, wherein an air outlet of the second heat dissipation device (12) is disposed toward the interior of the housing (11), wherein the second heat dissipation device (12) is disposed on a side wall of the housing (11).

11. The fireplace according to claim 9, wherein the control device (5) is configured to control the fireplace during the flame-extinguishing stage by: based on receipt of a shutdown command, stopping a heating element (103) from heating the liquid fuel in a vaporization chamber (101) of the vaporization device (1); and injecting a liquid fuel having a temperature lower than a boiling point of the liquid fuel into the vaporization chamber (101) of the vaporization device (1), to decrease a temperature of the liquid fuel in the vaporization chamber (101) below the boiling point of the liquid fuel.

12. The fireplace according to claim 9, wherein the fireplace is an alcohol fireplace, and accordingly, the liquid fuel is alcohol.

Description

BRIEF DESCRIPTION OF FIGURES

[0115] To describe the technical solutions of the embodiments of this application more clearly, the following briefly introduces the accompanying drawings required for describing the embodiments. Apparently, the accompanying drawings in the following description show merely some embodiments of this application, and persons of ordinary skill in the art can still derive other drawings from these accompanying drawings without creative efforts.

[0116] FIG. 1 is a flowchart of a quick fireplace flame-extinguishing method in Embodiment 1 of the present invention;

[0117] FIG. 2 is a flowchart of a quick fireplace flame-extinguishing method in Embodiment 2 of the present invention;

[0118] FIG. 3 is a flowchart of a quick fireplace flame-extinguishing method in Embodiment 3 of the present invention;

[0119] FIG. 4 is a flowchart of a quick fireplace flame-extinguishing method in Embodiment 4 of the present invention;

[0120] FIG. 5 is a flowchart of acquiring a maximum heat absorption capacity of a liquid fuel injected into a vaporization chamber in the quick fireplace flame-extinguishing method in Embodiment 4 of the present invention;

[0121] FIG. 6 is a flowchart of acquiring heat required to be released for decreasing a temperature of the liquid fuel in a current vaporization chamber below its boiling point in the quick fireplace flame-extinguishing method in Embodiment 4 of the present invention;

[0122] FIG. 7 is a schematic structural block diagram of a fireplace of the present invention;

[0123] FIG. 8 is a schematic three-dimensional structural diagram of a fireplace of the present invention;

[0124] FIG. 9 is a schematic diagram of an internal structure of a fireplace of the present invention;

[0125] FIG. 10 is a schematic structural exploded view of a fireplace of the present invention; and

[0126] FIG. 11 is a schematic structural diagram of a vaporization device in a fireplace of the present invention.

[0127] Names of components corresponding to reference numerals in figures are: 1vaporization device; 101vaporization chamber; 1011first injection port; 102liquid level control chamber; 1021second injection port; 1022liquid fuel outlet; 103heating element; 2burner; 3liquid storage device; 4liquid supply device; 5control device; 6liquid fuel amount detection structure; 601low liquid level detection probe; 602medium liquid level detection probe; 603high liquid level detection probe; 604safe liquid level detection probe; 7first heat dissipation device; 8liquid return device; 9first temperature sensor; 10second temperature sensor; 11housing; and 12second heat dissipation device.

DETAILED DESCRIPTION

[0128] The following further describes specific implementations of the present invention in detail with reference to the accompanying drawings and embodiments. The following embodiments are used to describe the present invention rather than to limit the scope of the present invention.

Embodiment 1

[0129] Referring to FIG. 1 and FIG. 7 to FIG. 11, the present invention provides a fireplace flame-extinguishing method, operating in a fireplace, including the following steps.

[0130] S1: When a shutdown command is received, stop a heating element 103 from heating a liquid fuel in a vaporization chamber 101 of a vaporization device 1.

[0131] S2: Inject a liquid fuel having a temperature lower than a boiling point of the liquid fuel into the vaporization chamber 101 of the vaporization device 1, to decrease a temperature of the liquid fuel in the vaporization chamber 101 below the boiling point of the liquid fuel.

[0132] After the shutdown command is received, although the heating element 103 immediately stops heating the liquid in the vaporization chamber 101, the temperature in the vaporization chamber 101 at that time is still very high, such that the liquid fuel in the vaporization chamber 101 is still being boiled and vaporized, and a temperature of a burner 2 is also transferred to the vaporization chamber 101 via connection therebetween. At that time, the vaporization chamber 101 still provides a large amount of vaporized fuel to the burner 2, preventing the flame of the burner 2 from being extinguished.

[0133] With the above method used, in step S2, a liquid fuel having a temperature lower than a boiling point of the liquid fuel is injected into the vaporization chamber 101 to neutralize and absorb the temperature of the liquid fuel in the vaporization chamber 101, so as to more quickly decrease the temperature of the liquid fuel in the vaporization chamber 101 below the boiling point of the liquid fuel. Compared to natural cooling or air cooling, this method can significantly shorten a boiling time of the liquid fuel in the vaporization chamber 101 after the shutdown command is received, that is, can significantly reduce an amount of the vaporized fuel outputted to the burner 2 in this stage as well as reduce the overall temperature in the vaporization chamber 101, such that the temperature of the vaporized fuel in the vaporization chamber 101 is also decreased and is even changed back into a liquid fuel, further reducing the amount of the vaporized fuel outputted to the burner 2. When the heat released by combustion of the vaporized fuel at a flame outlet hole of the burner 2 is insufficient to maintain the temperature of the flame outlet hole of the burner 2 above the ignition point of the fuel, the vaporized fuel is insufficient to support subsequent combustion of the flame at the burner 2, such that the flame at the burner 2 is extinguished quickly, thereby completing a quick flame extinguishment process.

[0134] Further, step S2 includes the following steps. [0135] S21A: Determine whether a time t1 has passed; if yes, execute S22A; and if no, wait and execute S21A. [0136] S22A: Inject a liquid fuel having a temperature lower than a boiling point of the liquid fuel into the vaporization chamber 101 of the vaporization device 1, to decrease a temperature of the liquid fuel in the vaporization chamber 101 below the boiling point of the liquid fuel.

[0137] Due to the limited capacity of the vaporization chamber 101, the temperature of the liquid fuel in the vaporization chamber 101 is at a peak value after shutdown. Therefore, even if the liquid fuel injected into the vaporization chamber 101 reaches a maximum capacity of the vaporization chamber 101, the temperature of the liquid fuel in the vaporization chamber 101 may still fail to drop below the boiling point.

[0138] With the above method used, the determining operation in step S21A in step S2 ensures that when the liquid fuel is injected into the vaporization chamber 101, the temperature of the liquid fuel in the vaporization chamber 101 is maintained below its boiling point.

[0139] After the shutdown command is just received, the temperature of the liquid fuel in the vaporization chamber 101 is at a peak value. In this stage, a cooling speed at which the liquid fuel is naturally cooled or air-cooled is greater than a cooling speed observed when the temperature of the liquid fuel in the vaporization chamber 101 approaches its boiling point. Therefore, before injecting the liquid fuel, waiting for a time and using a natural cooling or air cooling method realizes release of the heat of the vaporization chamber 101, and the liquid fuel is injected again at an appropriate moment, thereby further shortening a flame extinguishment time.

[0140] The time t1 in step S21A is correlated with factors such as the capacity of the vaporization chamber 101 and ambient heat dissipation conditions. Manufacturers can set these parameters based on empirical values obtained from experiments.

[0141] Further, in step S2, a stage of injecting the liquid fuel into the vaporization chamber 101 refers to injecting the liquid fuel into the vaporization chamber 101 until a maximum capacity of the vaporization chamber 101 is reached.

[0142] With the above method used, the process is simplified, and the operations of detecting and determining whether the liquid temperature in the vaporization chamber 101 is lower than its boiling point during the injection process are reduced. The above method can reduce the temperature of the liquid fuel in the vaporization chamber 101 as far as possible to ensure that the temperature of the liquid fuel in the vaporization chamber 101 drops below the boiling point after the liquid fuel is injected, and also reduces a cooling time after the temperature of the liquid fuel is below the boiling point, that is, reducing a waiting time for subsequently returning the liquid in the vaporization chamber 101 to the liquid storage device 3.

[0143] Further, a value of the time t1 in step S21A is any one from 20 seconds to 180 seconds.

[0144] With the above method used, the time t1 is selected more reasonably. The time t1 is set and selected based on empirical values. Manufacturers set and select one value from 20 seconds to 180 seconds according to factors such as the maximum capacity of the vaporization chamber 101, materials, and heat dissipation efficiency of the surrounding environment in combination with empirical values obtained from experiments.

[0145] Further, in step S1, after the heating element 103 stops heating the liquid fuel in the vaporization chamber 101, a first heat dissipation device 7 is started immediately or after a time t3 to dissipate heat from the vaporization chamber 101.

[0146] With the above method used, the provision of the first heat dissipation device 7 can further accelerate the temperature decrease of the liquid fuel in the vaporization chamber 101. In addition, compared with natural cooling, the above method significantly shortens the waiting time in step S2, thereby further shortening the flame extinguishment time.

[0147] Preferably, the first heat dissipation device 7 is started to dissipate the heat from the vaporization chamber 101 after waiting for a time t3. When the shutdown command is just received, the flame at the burner 2 is still strong. If the first heat dissipation device 7 is turned on at that moment, airflow generated by the first heat dissipation device 7 may cause the flame at the burner 2 to spread randomly, thereby posing a danger. Therefore, after waiting for a time t3 until the flame at the burner 2 becomes weaker, the first heat dissipation device 7 is started, avoiding the influence of the airflow generated by the first heat dissipation device 7 on the flame at the burner 2, thus ensuring safety.

[0148] Further, the fireplace flame-extinguishing method includes the following steps.

[0149] S3: Determine whether the temperature of the liquid fuel in the vaporization chamber 101 of the vaporization device 1 has been decreased to a third preset temperature; if yes, execute S4; and if no, wait and execute S3.

[0150] S4: Extract and deliver the liquid fuel in the vaporization device 1 back to a liquid storage device 3 until a liquid level of the liquid fuel in the vaporization chamber 101 reaches a preset safe level or falls below the preset safe level.

[0151] The use of the above method can ensure safe use of the fireplace in the next time and also avoid or reduce volatilization of the liquid fuel in the vaporization device 1 so that the liquid fuel cannot escape from a flame outlet hole of the burner 2.

[0152] Further, in step S3, during the waiting process, a second heat dissipation device 12 is started to dissipate heat from the vaporization chamber 101 and the burner 2.

[0153] With the above method used, the second heat dissipation device 12 can accelerate the decrease of the temperature of the liquid fuel in the vaporization chamber 101 to a third preset temperature.

[0154] Further, in step S2, the liquid fuel injected into the vaporization chamber 101 originates from the liquid storage device 3.

[0155] The liquid storage device 3 delivers the liquid fuel to the vaporization device 1 via a liquid supply device 4, and the liquid storage device 3 extracts the liquid fuel from the vaporization device 1 via a liquid return device 8.

[0156] With the above method used, the fireplace flame-extinguishing method is more reasonable, and the fireplace has a more reasonable structure.

[0157] Further, the liquid supply device 4 has a one-way cutoff function for preventing the liquid fuel in the vaporization device 1 from flowing back to the liquid storage device 3, and the liquid return device 8 has a one-way cutoff function for preventing the liquid fuel in the liquid storage device 3 from flowing back to the vaporization device 1.

[0158] With the above method used, the liquid supply device 4 and the liquid return device 8 are more reasonable, preventing the liquid fuel from experiencing uncontrollable backflow due to the siphon principle.

[0159] Further, the liquid supply device 4 is capable of delivering the liquid fuel in the liquid storage device 3 to the vaporization device 1 at a stable flow rate, and the flow rate at which the liquid supply device 4 delivers the liquid fuel is adjustable within a range.

[0160] With the above method used, when the liquid supply device 4 operates, the liquid fuel can be delivered to the vaporization device 1 at a stable and reliable flow rate.

[0161] Further, in step S2, during the process of injecting the liquid fuel into the vaporization chamber 101 of the vaporization device 1, the liquid fuel is injected into the vaporization chamber 101 at a maximum achievable injection speed for injecting the liquid fuel into the vaporization chamber 101.

[0162] With the above method used, in step S2, injecting the liquid fuel into the vaporization chamber 101 at a maximum speed can more quickly reduce the temperature of the liquid fuel in the vaporization chamber 101.

[0163] Further, the vaporization chamber 101 of the vaporization device 1 includes a first injection port 1011 for injecting the liquid fuel into the vaporization chamber 101.

[0164] With the above method used, the structural arrangement of the vaporization chamber 101 is more reasonable.

[0165] Further, the first injection port 1011 is located at a bottom of the vaporization chamber 101 or on a side wall close to the bottom.

[0166] With the above method used, the structural arrangement of the vaporization chamber 101 is more reasonable. When the liquid fuel is injected into the vaporization chamber 101 through the first injection port 1011, an impact to a liquid surface of the liquid fuel in the vaporization chamber 101 can be reduced, and a height of the liquid surface of the liquid fuel in the vaporization chamber 101 can be effectively controlled, thereby avoiding causing potential safety hazards or affecting the service life of the product due to injection of too much liquid fuel into the vaporization chamber 101, and also avoiding a failure in decreasing the temperature of the liquid fuel in the vaporization chamber 101 below the boiling point because the liquid fuel injected into the vaporization chamber 101 is less than a theoretical value.

[0167] In addition, when the temperature at the liquid surface of the liquid fuel in the vaporization chamber 101 is higher than that at the bottom of the liquid fuel, the above method can prevent evaporation of the injected liquid fuel while such evaporation reduces its cooling effect, and also realize smoother evaporation of the liquid fuel so as to take heat away.

[0168] Further, the vaporization device 1 includes a liquid level control chamber 102. The liquid level control chamber 102 includes a second injection port 1021 for injecting the liquid fuel into the liquid level control chamber 102, and a liquid fuel outlet 1022 for outputting the liquid fuel in the liquid level control chamber 102. The liquid fuel outlet 1022 is in communication with the first injection port 1011.

[0169] With the above method used, the provision of the liquid level control chamber 102 enables the liquid fuel injected into the vaporization device 1 to first enter the liquid level control chamber 102 and then enter the vaporization chamber 101 from the liquid level control chamber 102. This makes the injection of the liquid fuel more reasonable. Since a relatively more stationary liquid surface can be obtained in the liquid level control chamber 102, liquid level control becomes more reliable and reasonable.

[0170] Further, the liquid fuel outlet 1022 is located at a bottom of the liquid level control chamber 102 or on a side wall close to the bottom, and the second injection port 1021 is located at the bottom of the liquid level control chamber 102 or on a side wall close to the bottom.

[0171] In step S2, the liquid fuel is injected into the liquid level control chamber 102 via the second injection port 1021, and the liquid fuel in the liquid level control chamber 102 is injected into the vaporization chamber 101 through the liquid fuel outlet 1022 and the first injection port 1011 that are in communication with each other.

[0172] With the above method used, the structural arrangement of the liquid level control chamber 102 is more reasonable. Position arrangement of the liquid fuel outlet 1022 and the first injection port 1011 enables the liquid level control chamber 102 and the vaporization chamber 101 to form a communication device, the height of the liquid surface of the liquid fuel in the vaporization chamber 101 is kept the same as the height of the liquid surface in the liquid level control chamber 102, and controlling the height of the liquid surface in the liquid level control chamber 102 is equivalent to controlling the height of the liquid surface in the vaporization chamber 101, such that the injection of the liquid fuel is more reasonable. Since a relatively more stationary liquid surface can be obtained in the liquid level control chamber 102, liquid level control becomes more reliable and reasonable.

[0173] Further, the liquid fuel injected into the vaporization chamber 101 of the vaporization device 1 is a liquid fuel at room temperature.

[0174] With the above method used, the fireplace flame-extinguishing method is more reasonable. A liquid fuel at room temperature enters the vaporization chamber 101 to better neutralize and absorb the temperature of the liquid fuel in the vaporization chamber 101, such that the temperature drops below the boiling point more quickly, thereby realizing quicker flame extinguishment.

[0175] Further, the fireplace is an alcohol fireplace, and accordingly, the liquid fuel is alcohol.

[0176] Referring to FIG. 7 to FIG. 11, a fireplace includes: [0177] a burner 2, configured to combust a liquid fuel after the liquid fuel is vaporized; [0178] a vaporization device 1, provided with a vaporization chamber 101, where the vaporization chamber 101 is connected to the burner 2, and the vaporization device 1 is configured to vaporize the liquid fuel in the vaporization chamber 101 and deliver the vaporized liquid fuel to the burner 2 for combustion; [0179] a liquid storage device 3, configured to store the liquid fuel; [0180] a liquid supply device 4, connecting the liquid storage device 3 and the vaporization device 1 to deliver the liquid fuel in the liquid storage device 3 to the vaporization chamber 101 of the vaporization device 1; and [0181] a control device 5, connected to the liquid supply device 4, and configured to, during a normal operating stage of the fireplace, control the liquid supply device 4 to operate so as to deliver the liquid fuel in the liquid storage device 3 to the vaporization chamber 101 of the vaporization device 1, as well as configured to, during a flame-extinguishing stage of the fireplace, control the liquid supply device 4 to operate so as to deliver the liquid fuel in the liquid storage device 3 to the vaporization chamber 101 of the vaporization device 1.

[0182] With the use of the above structure, since the control device 5 controls, during the flame-extinguishing stage of the fireplace, the liquid supply device 4 to operate so as to deliver the liquid fuel in the liquid storage device 3 to the vaporization chamber 101 of the vaporization device 1, which enables a faster decrease of the temperature of the liquid fuel in the vaporization chamber 101 to below the boiling point during the flame-extinguishing stage of the fireplace, reducing the amount of the vaporized fuel supplied to the burner 2, thereby realizing quick flame extinguishment.

[0183] Further, the vaporization device 1 includes a heating element 103 for heating the liquid fuel in the vaporization chamber 101, and the control device 5 is connected to the heating element 103 so as to control an operating state of the heating element 103.

[0184] With the use of the above structure, the vaporization device 1 is more reasonable and convenient to control, and heats the liquid fuel in the vaporization chamber 101 so as to boil and vaporize the liquid fuel.

[0185] Further, the vaporization device 1 includes a liquid level control chamber 102. The vaporization chamber 101 includes a first injection port 1011 for injecting the liquid fuel into the vaporization chamber 101. The liquid level control chamber 102 includes a second injection port 1021 for injecting the liquid fuel into the liquid level control chamber 102, and a liquid fuel outlet 1022 for outputting the liquid fuel in the liquid level control chamber 102. The liquid fuel outlet 1022 is in communication with the first injection port 1011. The liquid supply device 4 is connected to the second injection port 1021 of the liquid level control chamber 102.

[0186] With the use of the above structure, the provision of the liquid level control chamber 102 enables the liquid fuel injected into the vaporization device 1 to first enter the liquid level control chamber 102 and then enter the vaporization chamber 101 from the liquid level control chamber 102. This makes the injection of the liquid fuel more reasonable. Since a relatively more stationary liquid surface can be obtained in the liquid level control chamber 102, liquid level control becomes more reliable and reasonable.

[0187] Further, the first injection port 1011 is located at a bottom of the vaporization chamber 101 or on a side wall close to the bottom, and the liquid fuel outlet 1022 is located at a bottom of the liquid level control chamber 102 or on a side wall close to the bottom.

[0188] With the use of the above structure, the structural arrangement of the vaporization chamber 101 and the liquid level control chamber 102 is more reasonable. When the liquid fuel is injected into the vaporization chamber 101 through the first injection port 1011, an impact to a liquid surface of the liquid fuel in the vaporization chamber 101 can be reduced, and a height of the liquid surface of the liquid fuel in the vaporization chamber 101 can be effectively controlled, thereby avoiding causing potential safety hazards or affecting the service life of the product due to injection of too much liquid fuel into the vaporization chamber 101, and also avoiding a failure in decreasing the temperature of the liquid fuel in the vaporization chamber 101 below the boiling point because the liquid fuel injected into the vaporization chamber 101 is less than a theoretical value.

[0189] In addition, when the temperature at the liquid surface of the liquid fuel in the vaporization chamber 101 is higher than that at the bottom of the liquid fuel, the above method can prevent evaporation of the injected liquid fuel while such evaporation reduces its cooling effect, and also realize smoother evaporation of the liquid fuel so as to take heat away.

[0190] Position arrangement of the liquid fuel outlet 1022 and the first injection port 1011 enables the liquid level control chamber 102 and the vaporization chamber 101 to form a communication device, the height of the liquid surface of the liquid fuel in the vaporization chamber 101 is kept the same as the height of the liquid surface in the liquid level control chamber 102, and controlling the height of the liquid surface in the liquid level control chamber 102 is equivalent to controlling the height of the liquid surface in the vaporization chamber 101, such that the injection of the liquid fuel is more reasonable, further preventing the injection of the liquid fuel from affecting liquid surface fluctuation in the vaporization chamber 101.

[0191] Further, the fireplace includes a liquid fuel amount detection structure 6 for detecting an amount of the liquid fuel in the vaporization chamber 101, and the control device 5 is connected to the liquid fuel amount detection structure 6 to acquire the amount of the liquid fuel in the vaporization chamber 101.

[0192] With the use of the above structure, the provision of the liquid fuel amount detection structure 6 makes it convenient to acquire the amount of the liquid fuel in the vaporization chamber 101, facilitating better control by the control device 5.

[0193] Further, the liquid fuel amount detection structure 6 is a liquid level detection structure. The liquid fuel amount detection structure 6 includes a low liquid level detection probe 601, a medium liquid level detection probe 602, and a high liquid level detection probe 603. The low liquid level detection probe 601 is closer to a bottom surface of the vaporization chamber 101 than the medium liquid level detection probe 602. The medium liquid level detection probe 602 is closer to the bottom surface of the vaporization chamber 101 than the high liquid level detection probe 603.

[0194] With the use of the above structure, the structure of the liquid fuel amount detection structure 6 is more reasonable. The height of the liquid surface of the liquid fuel in the vaporization chamber 101 is acquired through the low liquid level detection probe 601, the medium liquid level detection probe 602, and the high liquid level detection probe 603.

[0195] Further, the liquid fuel amount detection structure 6 includes a safe liquid level detection probe 604. The heating element 103 is close to the bottom surface of the vaporization chamber 101. The low liquid level detection probe 601 is positioned higher than a side of the heating element 103 away from the bottom surface of the vaporization chamber 101. The safe liquid level detection probe 604 is positioned at a height near the heating element 103. The safe liquid level detection probe 604 is closer to the bottom surface of the vaporization chamber 101 than the low liquid level detection probe 601.

[0196] With the use of the above structure, the structure of the liquid fuel amount detection structure 6 is more reasonable. The safe liquid level detection probe 604 can prevent an excessively small amount of the liquid fuel in the vaporization chamber 101 so as not to affect the use, or prevent dry firing of the heating element 103 while such dry firing affects the service life and use safety of the product.

[0197] Further, the liquid fuel amount detection structure 6 is disposed in the liquid level control chamber 102.

[0198] With the use of the above structure, the liquid control chamber and the vaporization chamber 101 form a communication device therebetween, and the height of the liquid surface in the liquid control chamber is equivalent to the height of the liquid surface of the liquid fuel in the vaporization chamber 101.

[0199] Further, the fireplace includes a first heat dissipation device 7 for dissipating heat from the vaporization chamber 101. The heat dissipation device employs air for heat dissipation. An air outlet of the first heat dissipation device 7 is disposed toward the vaporization chamber 101. Specifically, the first heat dissipation device 7 is disposed below the vaporization chamber 101.

[0200] With the use of the above structure, the first heat dissipation device 7 can accelerate the decrease of the temperature in the vaporization chamber 101, contributing to flame extinguishment of the fireplace.

[0201] Further, the fireplace includes a liquid return device 8. The liquid return device 8 connects the liquid storage device 3 and the vaporization device 1 to deliver the liquid fuel in the vaporization device 1 to the liquid storage device 3.

[0202] The control device 5 is connected to the liquid return device 8 and, during the flame-extinguishing stage of the fireplace, controls the liquid return device 8 to operate when a temperature of the liquid fuel in the vaporization chamber 101 falls below a preset value, so as to deliver the liquid fuel in the vaporization device 1 to the liquid storage device 3.

[0203] With the use of the above structure, the provision of the liquid return device 8 ensures safe use of the fireplace in the next time and also avoids or reduces volatilization of the liquid fuel in the vaporization device 1 so that the liquid fuel cannot escape from a flame outlet hole of the burner 2.

[0204] Further, the liquid supply device 4 has a one-way cutoff function for preventing the liquid fuel in the vaporization device 1 from flowing back to the liquid storage device 3, and the liquid return device 8 has a one-way cutoff function for preventing the liquid fuel in the liquid storage device 3 from flowing back to the vaporization device 1.

[0205] With the use of the above structure, the liquid supply device 4 and the liquid return device 8 are more reasonable, preventing the liquid fuel from experiencing uncontrollable backflow due to the siphon principle.

[0206] Further, the fireplace includes a first temperature sensor 9 for detecting the temperature of the liquid fuel in the vaporization chamber 101 and a second temperature sensor 10 for detecting a temperature of the burner 2, and the first temperature sensor 9 and the second temperature sensor 10 are connected to the control device 5.

[0207] With the use of the above structure, the structure of the fireplace is more reasonable, facilitating better control by the control device 5.

[0208] Further, the fireplace includes a housing 11, and a second heat dissipation device 12 for dissipating heat from an interior of the housing 11. The vaporization device 1, the liquid supply device 4, the control device 5, and the liquid return device 8 are disposed within the housing 11. The liquid storage device 3 is inside the housing 11 or externally mounted. A flame outlet, a part with a flame outlet, or the entirety of the burner 2 is exposed outside the housing 11. The second heat dissipation device 12 employs air for heat dissipation. An air outlet of the second heat dissipation device 12 is disposed toward the interior of the housing 11. The second heat dissipation device 12 is disposed on a side wall of the housing 11.

[0209] With the use of the above structure, the structure of the fireplace is more reasonable. The provision of the housing 11 can protect components therein and provide an installation environment for them. The provision of the second heat dissipation device 12 is conducive to dissipating heat for the components inside the housing 11, and certainly can also accelerate the decrease of the temperature of the liquid fuel in the vaporization chamber 101, which is beneficial for the flame-extinguishing stage of the fireplace.

[0210] Further, during the flame-extinguishing stage of the fireplace, the control device 5 controls the fireplace by using the foregoing fireplace flame-extinguishing method.

[0211] With the use of the above structure, the fireplace is more reasonable and can realize quick flame extinguishment more reasonably.

[0212] Further, the fireplace is an alcohol fireplace, and accordingly, the liquid fuel is alcohol.

Embodiment 2

[0213] Embodiment 2 is substantially the same as Embodiment 1 except that a specific process of step S2 in the fireplace flame-extinguishing method is different. Specifically, referring to FIG. 2, step S2 includes the following steps.

[0214] S21B: Determine whether the temperature of the burner 2, the heating element 103, or the liquid fuel in the vaporization chamber 101 has been decreased to a first preset temperature; if yes, execute S22B; and if no, wait and execute S21B.

[0215] S22B: Inject a liquid fuel having a temperature lower than a boiling point of the liquid fuel into the vaporization chamber 101 of the vaporization device 1, to decrease a temperature of the liquid fuel in the vaporization chamber 101 below the boiling point of the liquid fuel.

[0216] With the above method used, the determining operation in step S21B in step S2 ensures that when the liquid fuel is injected into the vaporization chamber 101, the temperature of the liquid fuel in the vaporization chamber 101 is maintained below its boiling point.

[0217] The first preset temperature in step S21B is correlated with factors such as the capacity of the vaporization chamber 101 and ambient heat dissipation conditions. Manufacturers can set these parameters based on empirical values obtained from experiments.

Embodiment 3

[0218] Embodiment 3 is substantially the same as Embodiment 1 except that a specific process of step S2 in the fireplace flame-extinguishing method is different. Specifically, referring to FIG. 3, step S2 includes the following steps.

[0219] S21C: Determine whether a time t2 has passed; if yes, execute S22C; and if no, wait and execute S21C.

[0220] S22C: Determine whether the temperature of the burner 2, the heating element 103, or the liquid fuel in the vaporization chamber 101 has been decreased to a second preset temperature; if yes, execute S23C; and if no, wait and execute S22C.

[0221] S23C: Inject a liquid fuel having a temperature lower than a boiling point of the liquid fuel into the vaporization chamber 101 of the vaporization device 1, to decrease a temperature of the liquid fuel in the vaporization chamber 101 below the boiling point of the liquid fuel.

[0222] With the above method used, the determining operations in steps S21C and S22C in step S2 ensure that when the liquid fuel is injected into the vaporization chamber 101, the temperature of the liquid fuel in the vaporization chamber 101 is maintained below its boiling point.

[0223] The time t2 in step S21C and the second preset temperature in step S22C are correlated with factors such as the capacity of the vaporization chamber 101 and ambient heat dissipation conditions. Manufacturers can set these parameters based on empirical values obtained from experiments.

[0224] Further, a value of the time t2 in step S21C is any one from 20 seconds to 180 seconds.

[0225] With the above method used, the time t2 is selected more reasonably. The time t2 is set and selected based on empirical values. Manufacturers set and select one value from 20 seconds to 180 seconds according to factors such as the maximum capacity of the vaporization chamber 101, materials, and heat dissipation efficiency of the surrounding environment in combination with empirical values obtained from experiments.

Embodiment 4

[0226] Embodiment 4 is substantially the same as Embodiment 1 except that a specific process of step S2 in the fireplace flame-extinguishing method is different. Specifically, referring to FIG. 4 to FIG. 6, step S2 includes the following steps.

[0227] S21D: Determine whether, upon injecting a liquid fuel having a temperature lower than a boiling point of the liquid fuel into the vaporization chamber 101, a maximum heat absorption capacity of the liquid fuel injected into the vaporization chamber 101 is greater than heat required to be released for decreasing the temperature of the liquid fuel in the current vaporization chamber 101 below its boiling point; if yes, execute S22D; and if no, wait and execute S21D.

[0228] S22D: Inject a liquid fuel having a temperature lower than a boiling point of the liquid fuel into the vaporization chamber 101 of the vaporization device 1, to decrease a temperature of the liquid fuel in the vaporization chamber 101 below the boiling point of the liquid fuel.

[0229] With the above method used, the determining operation in S21D in step S2 ensures that when the liquid fuel is injected into the vaporization chamber 101, the temperature of the liquid fuel in the vaporization chamber 101 is maintained below its boiling point.

[0230] Further, in step S21D, the step of acquiring, upon injecting a liquid fuel having a temperature lower than a boiling point of the liquid fuel into the vaporization chamber 101, a maximum heat absorption capacity of the liquid fuel injected into the vaporization chamber 101 includes the following steps.

[0231] S21D-A1: Acquire a maximum capacity of the liquid fuel capable of being injected into the vaporization chamber 101 and a temperature of the liquid fuel to be injected into the vaporization chamber 101.

[0232] S21D-A2: Obtain, upon injecting a liquid fuel having a temperature lower than the boiling point of the liquid fuel into the vaporization chamber 101, a maximum heat absorption capacity of the liquid fuel injected into the vaporization chamber 101, based on the maximum capacity of the liquid fuel capable of being injected into the vaporization chamber 101 and the temperature of the liquid fuel to be injected into the vaporization chamber 101.

[0233] In step S21D, the step of acquiring the heat required to be released for decreasing the temperature of the liquid fuel in the current vaporization chamber 101 below its boiling point includes the following steps.

[0234] S21D-B1: Acquire a temperature of the liquid fuel in the current vaporization chamber 101 and a capacity of the liquid fuel in the current vaporization chamber 101.

[0235] S21D-B2: Acquire the heat required to be released for decreasing the temperature of the liquid fuel in the current vaporization chamber 101 below its boiling point, based on the temperature of the liquid fuel in the current vaporization chamber 101 and the capacity of the liquid fuel in the current vaporization chamber 101.

[0236] With the above method used, different maximum capacities of the liquid fuel capable of being injected into the vaporization chamber 101 currently and different temperatures of the liquid fuel to be injected into the vaporization chamber 101 are combined in a matching manner for experiment, to obtain, upon injecting a liquid fuel having a temperature lower than the boiling point of the liquid fuel into the vaporization chamber 101, corresponding empirical values of the maximum heat absorption capacity of the liquid fuel injected into the vaporization chamber 101 and form a mapping table or an approximate functional relationship for use in step S21D-A2.

[0237] Empirical values of the heat required to be released for decreasing the temperature of the liquid fuel in the current vaporization chamber 101 below its boiling point are acquired based on different temperatures of the liquid fuel in the current vaporization chamber 101 and different capacities of the liquid fuel in the current vaporization chamber 101, and a mapping table or an approximate functional relationship is formed for use in step S21D-B2.

[0238] Further, in step S21D-A1, the step of acquiring a maximum capacity C1 of the liquid fuel capable of being injected into the vaporization chamber 101 includes the following steps.

[0239] S21D-A11: Acquire a current capacity C1 of the liquid fuel in the vaporization chamber 101 and a maximum capacity C2 of the liquid fuel capable of being accommodated in the vaporization chamber 101.

[0240] S21D-A12: Obtain a maximum capacity C3 of the liquid fuel capable of being injected into the vaporization chamber 101 currently based on the current capacity C1 of the liquid fuel in the vaporization chamber 101 and the maximum capacity C2 of the liquid fuel capable of being accommodated in the vaporization chamber 101, where

##STR00002##

[0241] With the above method used, in step S21D-A1, the step of acquiring a maximum capacity C1 of the liquid fuel capable of being injected into the vaporization chamber 101 is more reasonable and reliable.

[0242] For the same or similar parts of the embodiments in this specification, reference may be made between these embodiments. Each embodiment focuses on describing differences from other embodiments.

[0243] The foregoing descriptions are merely specific embodiments of this application but are not intended to limit the protection scope of this application. Any variation or replacement readily figured out by persons skilled in the art within the technical scope disclosed in this application shall fall within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.