GAS-ELECTRIC HYBRID STORAGE WATER HEATER

Abstract

A gas-electric hybrid storage water heater includes a water tank, a casing, a combustion chamber, a gas control valve and an electric heating tube. The water tank is provided with a water inlet and a water outlet. The casing is arranged at an end of the water tank, and the combustion chamber is arranged in the water tank. The combustion chamber has a closed end and an open end arranged in the casing. The gas control valve is arranged in the casing, and is connected to a gas inlet pipe and a burner. The burner is configured to extend into the combustion chamber, and a side of the burner is provided with an ignition device. The electric heating tube is inserted into the water tank, and is arranged side by side with the combustion chamber.

Claims

1. A gas-electric hybrid storage water heater, comprising: a water tank; a casing; a combustion chamber; a gas control valve; and an electric heating tube; wherein the water tank is provided with a water inlet and a water outlet; the casing is arranged at an end of the water tank; the combustion chamber is arranged in the water tank; and the combustion chamber has a closed end and an open end, wherein the open end is arranged in the casing; the gas control valve is arranged in the casing; the gas control valve is connected to a gas inlet pipe and a burner; the burner is configured to extend into the combustion chamber; and a side of the burner is provided with an ignition device; the electric heating tube is configured to be inserted into the water tank, and the electric heating tube is arranged side by side with the combustion chamber; an anti-downdraft hood assembly is arranged at the open end of the combustion chamber, and comprises a first draft hood and a second draft hood; the first draft hood is transversely provided in the casing; a first end of the first draft hood is configured to extend to the open end of the combustion chamber; and the second draft hood is butt-jointed to a second end of the first draft hood; an end surface of the casing is provided with an openable panel; the openable panel is provided with a flue gas vent; the second draft hood and the first draft hood are configured to form a flue gas passage extending to the flue gas vent; and a bottom of the second draft hood is provided with a first baffle; and the first baffle is configured to incline upward.

2. The gas-electric hybrid storage water heater of claim 1, further comprising: a controller; wherein the controller is arranged on an outer side wall of the water tank, and is configured to control the electric heating tube and the gas control valve.

3. The gas-electric hybrid storage water heater of claim 1, wherein an air deflector is provided in the combustion chamber, and is configured to form a U-shaped passage in the combustion chamber; and an end of the burner is configured to extend into an end of the U-shaped passage.

4. The gas-electric hybrid storage water heater of claim 2, wherein a side portion of the combustion chamber is provided with an electronic titanium rod connected to an inner wall of the water tank; and the electronic titanium rod is electrically connected to the controller.

5. The gas-electric hybrid storage water heater of claim 4, wherein the electronic titanium rod comprises a titanium ion rod body and a sleeve arranged at a base of the titanium ion rod body; an outer side of the sleeve is connected to a mounting nut; and the sleeve is mounted to water tank through the mounting nut.

6. The gas-electric hybrid storage water heater of claim 1, wherein the first draft hood comprises a top plate and two first side plates respectively arranged at two sides of the top plate; an end of the top plate facing towards the second draft hood is provided with a guide slope; a top of the guide slope is configured to extend into the flue gas vent; and the second draft hood comprises a rear slope and two second side plates respectively arranged at two sides of the rear slope; the rear slope is configured to fit the guide slope; and the two first side plates are configured to be inserted between the two second side plates.

7. The gas-electric hybrid storage water heater of claim 6, wherein the first baffle is arranged at a lower end of the rear slope; and an included angle between the first baffle and the rear slope is greater than 90.

8. The gas-electric hybrid storage water heater of claim 7, wherein an end of the top plate away from the second draft hood is vertically provided with a second baffle.

9. The gas-electric hybrid storage water heater of claim 2, wherein the water tank is provided with a thermostat, and a probe of the thermostat is configured to extend into the water tank; and the thermostat is connected to the controller.

10. The gas-electric hybrid storage water heater of claim 2, wherein the outer side wall of the water tank is provided with a mounting base, and the controller is arranged at the mounting base; and a cover is provided outside the controller to cover the controller.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0040] FIG. 1 is a perspective view of a gas-electric hybrid storage water heater according to an embodiment of the present disclosure;

[0041] FIG. 2 an exploded view of the gas-electric hybrid storage water heater according to an embodiment of the present disclosure;

[0042] FIG. 3 is a first sectional view of the gas-electric hybrid storage water heater according to an embodiment of the present disclosure;

[0043] FIG. 4 is a second sectional view of the gas-electric hybrid storage water heater according to an embodiment of the present disclosure;

[0044] FIG. 5 is a third sectional view of the gas-electric hybrid storage water heater according to an embodiment of the present disclosure;

[0045] FIG. 6 is a sectional view of portion A in FIG. 5;

[0046] FIG. 7 is a perspective view of an anti-downdraft hood assembly according to an embodiment of the present disclosure; and

[0047] FIG. 8 is a sectional view of the anti-downdraft hood assembly according to an embodiment of the present disclosure.

DETAILED DESCRIPTION OF EMBODIMENTS

[0048] The technical solutions of the present disclosure will be described clearly and completely below with reference to the embodiments in combination with the accompanying figures. Obviously, provided herein are merely some embodiments of the present disclosure, rather than all the embodiments of the present disclosure.

[0049] Referring to FIGS. 1-8, the present disclosure provides a gas-electric hybrid storage water heater, including a water tank 1, a casing 5, a combustion chamber 16, a gas control valve 8 and an electric heating tube 13. The water tank 1 is provided with a water inlet and a water outlet. The casing 5 is arranged at an end of the water tank 1. The combustion chamber 16 is arranged in the water tank 1, and the combustion chamber 16 has a closed end and an open end, where the open end is arranged in the casing 5. The gas control valve 8 is arranged in the casing 5, and the gas control valve 8 is connected to a gas inlet pipe 19 and a burner 18. The burner 18 is configured to extend into the combustion chamber 16, and a side of the burner 18 is provided with an ignition device 9.

[0050] The electric heating tube 13 is configured to be inserted into the water tank 1, and the electric heating tube 13 is arranged side by side with the combustion chamber 16. An anti-downdraft hood assembly 17 is arranged at an end of the combustion chamber 16, and includes a first draft hood 175 and a second draft hood 174. The first draft hood 175 is transversely provided in the casing 5. A first end of the first draft hood 175 is configured to extend to the open end of the combustion chamber 16, and the second draft hood 174 is butt-jointed to a second end of the first draft hood 175.

[0051] An end surface of the casing 5 is provided with an openable panel 11. The openable panel 11 is provided with a flue gas vent 10. The second draft hood 174 and the first draft hood 175 are configured to form a fuel gas passage 178 extending to the flue gas vent 10. A bottom of the second draft hood 174 is provided with a first baffle 176, and the first baffle 176 is configured to incline upward.

[0052] In some embodiments, the combustion chamber 16 is arranged in the water tank 1 to heat water inside the water tank 1 through gas combustion, and the electric heating tube 13 can also heat the water inside the water tank 1, thereby achieving the integrated utilization of gas heating and electric heating. This water heater has a sample design, no need for complicated mechanisms, and superior versatility. Moreover, the anti-downdraft hood assembly 17 adopts a splicing method using the first draft hood 175 and the second draft hood 174 to form the fuel gas passage 178, which facilitates the assembly and molding of the fuel gas passage 178. Additionally, the first baffle 176 can prevent the flue gas intruded by the external wind from flowing back to the combustion chamber 16.

[0053] In some embodiments, the external gas is configured to enter the gas control valve 8 from the gas inlet pipe 19, be distributed via the gas control valve 8, and be ignited in the burner 18. The burner 18 is configured to burn in the combustion chamber 16, or jet flame into the combustion chamber 16 to heat an outer wall of the combustion chamber 16, serving as a heating tube.

[0054] The first draft hood 175 and the second draft hood 174 are configured to adopt a light sheet-metal structure. Gas is introduced into the combustion chamber 16 for combustion. After combustion, a large amount of flue gas is expelled. The flue gas can be rapidly expelled outward through the fuel gas passage 178 formed by the first draft hood 175 and the second draft hood 174. A filter screen plate is arranged at the flue gas vent 10 to prevent external debris from entering the flue gas vent 10.

[0055] In this embodiment, the gas-electric hybrid storage water heater further includes a controller 2, where the controller 2 is arranged on an outer side wall of the water tank 1, and is configured to control the electric heating tube 13 and the gas control valve 8 to facilitate control of the water heater.

[0056] In some embodiments, the outer side wall of the water tank 1 is provided with a mounting base, and the controller 2 is arranged at the mounting base. and a cover 15 is provided outside the controller 2 to cover the controller 2 to facilitate assembly and detachment of the controller 2 and achieve an effective protection.

[0057] In some embodiments, a temperature and pressure (TP) relief valve 3 is arranged on the water tank 1. This TP relief valve 3 is configured as a mechanical type with three operational methods.

[0058] 1(1) The TP relief valve 3 is provided with a probe to sense temperature, thereby releasing pressure and draining water. [0059] (2) When water pressure is too high, the TP relief valve 3 triggers a spring arranged inside the TP relief valve 3 to drain water. [0060] (3) The TP relief valve 3 can drain water through manual operation.

[0061] In this embodiment, an air deflector 4 is provided in the combustion chamber 16, and is configured to form a U-shaped passage in the combustion chamber 16. An end of the burner 18 is configured to extend into an end of the U-shaped passage to allow airflow entering the combustion chamber 16 to flow more smoothly, thereby improving combustion efficiency.

[0062] In this embodiment, a side portion of the combustion chamber 16 is provided with an electronic titanium rod 7 connected to a side wall of the water tank 1. The electronic titanium rod 7 is electrically connected to the controller 2. An original active magnesium rod is replaced with the electronic titanium rod 7 to achieve a convenient installation. An output current of the electronic titanium rod 7 is continuously adjustable, having a wide protection range, a long service life and a good corrosion resistance.

[0063] In some embodiments, the electronic titanium rod 7 is configured to be inserted into the water in the water tank 1. The electronic titanium rod 7 is controlled via the controller 2 to release active positive ions. The positive ions preemptively form a circuit with the electric heating tube 13, thereby protecting the tank's liner. In this case, the energy consumption of this electronic circuit is extremely low, even lower than that of an indicator light on ordinary television set, and usage wear and tear of the titanium ion rod is almost zero. Consequently, this device is vividly called an electronic magnesium rod.

[0064] In some embodiments, the electronic titanium rod 7 includes a titanium ion rod body 72 and a sleeve 71 arranged at a base of the titanium ion rod body 72. An outer side of the sleeve 71 is connected to a mounting nut 74. The sleeve 71 is mounted to the water tank 1 through the mounting nut 74.

[0065] Referring to FIGS. 7-8, in this embodiment, the first draft hood 175 includes a top plate 51 and two first side plates 53 respectively arranged at two sides of the top plate 51. An end of the top plate 51 facing towards the second draft hood 174 is provided with a guide slope 54. A top of the guide slope 54 is configured to extend into the flue gas vent 10. The second draft hood 174 includes a rear slope 42 and two second side plates 41 respectively arranged at two sides of the rear slope 42, where the rear slope 42 is configured to fit the guide slope 54, and the two first side plates 53 are configured to be inserted between the two second side plates 41.

[0066] The first draft hood 175 is butt-jointed to the second draft hood 174 to form the fuel gas passage 178. The fuel gas passage 178 includes a first horizontal segment and a second upward segment connected in sequence, so as to expel the rising flue gas to the outside of the water heater, with a relatively small flow resistance.

[0067] In some embodiments, the first baffle 176 is arranged at a lower end of the rear slope 42. An included angle between the first baffle 176 and the rear slope 42 is greater than 90. The first baffle 176 is arranged on a lower side to prevent the flue gas intruded by the external wind from flowing back to the combustion chamber 16.

[0068] In some embodiments, an end of the top plate 51 away from the second draft hood 174 is vertically provided with a second baffle 52 to improve strength and block the airflow entering the casing 5 from the flue gas vent 10.

[0069] In some embodiments, the water tank 1 is provided with a temperature probe 20, and a probe of the temperature probe 20 is configured to extend into the water tank 1. The temperature probe 20 is connected to the controller 2, so as to allow the temperature probe 20 to induct a water temperature in real time and feed the temperature back to the controller 2. The controller 2 is configured to control the water temperature through a program to enable a constant temperature effect.

[0070] In some embodiments, the water tank 1 is provided with the thermostat 14. The thermostat 14 is configured to abuts against a surface of the water tank 1. The thermostat 14 is connected to the controller 2. The thermostat 14 is configured as a combination of an automatic-reset type and a manual-reset type to further prevent the water temperature from overheating. In a case that the temperature probe 20 fails to induct overheating, the thermostat 14 is configured to maintain normal operation of the water heater.

[0071] It should be noted that all the directional indications (such as up and down, left and right, front and back, etc.) used herein are only used to explain the relative positional relationship or motion among the components under a specific posture (as shown in the attached figure). If the specific posture changes, the corresponding directional indication will be adjusted accordingly.

[0072] Furthermore, the expressions involving first, second, etc. in the present disclosure are only for descriptive purposes and should not be understood as indicating or implying the relative importance or the quantity of the technical features involved. Therefore, features defined by first or second can explicitly or implicitly indicate the inclusion of at least one of such features. In the description of the present disclosure, unless otherwise stated, a plurality of means at least two, such as two, three, and so on.

[0073] As used herein, it should be noted that unless otherwise specified, the terms connection and fixing should be broadly interpreted. For example, it can be a fixed connection, a detachable connection or an integrated connection; it may be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium; it can be an internal communication between two components, or an interaction relationship between two components. For those skilled in the art, the specific meanings of the above terms in this disclosure can be understood according to the context.

[0074] Furthermore, the technical solutions of various embodiments of the present disclosure can be combined with each other on the premise that the combined solution can be achieved by one of ordinary skill in the art. When the combination of technical solutions appears to be contradictory or cannot be implemented by those skilled in the art, it should be considered that such a combination does not exist, and is not included in the scope of the present disclosure defined by the appended claims.