Temperature Control System of a Gas Oven

Abstract

A temperature control system of a gas oven, the gas oven has an oven chamber (1), the temperature control system has burners (2) disposed inside the oven chamber (1), gas nozzles (3) supplying gas to each burner (2); a temperature-controlled gas valve (5) with a temperature sensing rod (4); the temperature-controlled gas valve (5) has a valve rod (51) capable of rotating to different angles to set different working temperatures of the gas oven; the temperature-controlled gas valve (5) has a gas outlet (52) delivering gas to each gas nozzle (3) through a gas distribution mechanism; the temperature sensing rod (4) extends into the oven chamber (1) for sensing current temperature; the temperature-controlled gas valve (5) has a regulating mechanism (53).

Claims

1. A temperature control system of a gas oven, the gas oven having an oven chamber, the temperature control system comprising: a plurality of burners disposed inside the oven chamber; a plurality of gas nozzles supplying gas to each burner; a temperature-controlled gas valve with a temperature sensing rod; wherein, the temperature-controlled gas valve has a valve rod capable of rotating to different angles to set different working temperatures of the gas oven; the temperature-controlled gas valve has a gas outlet delivering gas to each gas nozzle through a gas distribution mechanism; the temperature sensing rod extends into the oven chamber for sensing current temperature in the oven chamber; the temperature-controlled gas valve has a regulating mechanism; when the current temperature in the oven chamber is lower than a set value, the gas outlet of the temperature-controlled gas valve delivers gas at a high flow, and when the current temperature in the oven chamber is higher than the set value, the regulating mechanism reduces delivery of the gas to the gas outlet of the temperature-controlled gas valve.

2. The temperature control system of claim 1, wherein the gas distribution mechanism comprises a multi-pass connector with a plurality of outlet ends connected to the gas outlet of the temperature-controlled gas valve, and a gas pipe is connected between each outlet end of the multi-pass connector and the corresponding gas nozzle.

3. The temperature control system of claim 1, wherein the gas distribution mechanism comprises a gas distribution pipe disposed inside the oven chamber, and each gas nozzle is mounted on the gas distribution pipe and communicated with the gas distribution pipe; the gas distribution pipe has a gas inlet end; and the gas outlet end of the temperature-controlled gas valve is connected to the gas inlet end through a connecting pipe.

4. The temperature control system of claim 1, wherein further comprises an ignition device placed adjacent to the burners and a micro-switch placed outside the temperature-controlled gas valve; the micro-switch is connected to the ignition device to control the ignition device; a trigger tray capable of rotating with the valve rod is connected to the valve rod; in an initial state, the micro-switch is not triggered by the trigger tray, only when the valve rod is pressed down, the trigger tray is capable of triggering the micro-switch, so as to make the ignition device to ignite.

5. The temperature control system of claim 4, wherein the ignition device is an ignition needle with a pulser, or an ignition plug.

6. The temperature control system of claim 1, wherein further comprises a potentiometer and a circuit board with a display screen which are in communication with each other; the potentiometer is disposed in upper portion of the temperature-controlled gas valve, a rotor in the potentiometer is partially sheathed on the valve rod of the temperature-controlled gas valve and is capable of being driven by the valve rod to rotate to detect the angle of rotation of the valve rod; and the display screen on the circuit board is capable of displaying the set temperature according to the angle of rotation of the valve rod.

7. The temperature control system of claim 6, wherein further comprises a temperature detector in communication with the circuit board; the temperature detector extends into the oven chamber to detect the current temperature in the oven chamber, and transmits the current temperature to the circuit board; and the display screen on the circuit board is capable of displaying the current temperature in the oven chamber.

8. The temperature control system of claim 6, wherein further comprises a flame detection needle in communication with the circuit board; the flame detection needle extends into the oven chamber to detect whether the burners are burning; and a flame indicator light for displaying whether the burners are burning is disposed on the circuit board.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG. 1 is a schematic diagram of a temperature control system of a gas oven according to Embodiment 1 of the present invention;

[0018] FIG. 2 is a first perspective view of a temperature-controlled gas valve of the temperature control system according to Embodiment 1 of the present invention;

[0019] FIG. 3 is a second perspective view of the temperature-controlled gas valve of the temperature control system according to Embodiment 1 of the present invention;

[0020] FIG. 4 is a sectional view of the temperature-controlled gas valve of the temperature control system according to Embodiment 1 of the present invention;

[0021] FIG. 5 is a schematic diagram of the temperature control system of a gas oven according to Embodiment 2 of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

[0022] The present invention will be further described in detail below by embodiments with reference to the accompanying drawings.

[0023] FIGS. 1-4 show a preferred embodiment of the temperature control system of a gas oven of the present invention.

[0024] The gas oven has an oven chamber 1, the temperature control system of the gas oven comprises a plurality of burners 2 disposed inside the oven chamber 1, a plurality of gas nozzles 3 supplying gas to each burner 2, and a temperature-controlled gas valve 5 with a temperature sensing rod 4. In this embodiment, there are three burners 2, among which a fire transmission rank 21 needs to be arranged for better fire transmission.

[0025] The temperature-controlled gas valve 5 has a gas inlet end 54 which is connected to a gas tank. The temperature-controlled gas valve 5 has a valve rod 51 capable of rotating to different angles to set different working temperatures of the gas oven; the temperature-controlled gas valve 5 has a gas outlet 52 delivering gas to each gas nozzle 3 through a gas distribution mechanism; the temperature sensing rod 4 extends into the oven chamber 1 for sensing current temperature in the oven chamber 1; the temperature-controlled gas valve 5 has a regulating mechanism 53; when the current temperature in the oven chamber 1 is lower than a set value, the gas outlet 52 of the temperature-controlled gas valve 5 delivers gas at a high flow, and when the current temperature in the oven chamber 1 is higher than the set value, the regulating mechanism 53 reduces delivery of the gas to the gas outlet 52 of the temperature-controlled gas valve 5. The temperature sensing rod 4 can transfer a thermal signal to the regulating mechanism 53 in the temperature-controlled gas value 5 to act the regulating mechanism 53. This is the prior art.

[0026] The temperature-controlled gas valve 5 with the temperature sensing rod 4 may be a temperature-controlled gas valve with an ever-burning fire function, which may refer to the applicant's Application Patent CN210531679U entitled MACHANISM-IMPROVED TEMPERATURE-CONTROLLED VALVE WITH EVER-BURNING FIRE FUNCTION, or the applicant's Application Patent CN212377363U entitled MACHANISM-OPTIMIZED TEMPERATURE-CONTROLLED VALVE WITH EVER-BURNING FIRE FUNCTION, or other existing temperature-controlled gas valve mechanisms with temperature sensing rods.

[0027] Preferably, the gas distribution mechanism in this embodiment comprises a gas distribution pipe 7 disposed inside the oven chamber 1, and each gas nozzle 3 is mounted on the gas distribution pipe 7 and communicated with the gas distribution pipe 7; the gas distribution pipe 7 has a gas inlet end 71; and the gas outlet end 52 of the temperature-controlled gas valve 5 is connected to the gas inlet end 71 through a connecting pipe 72.

[0028] The temperature control system further comprises an ignition device 8 placed adjacent to the burners 2, and the ignition device 8 is an ignition needle with a pulser 81, or an ignition plug. A micro-switch 14 placed outside the temperature-controlled gas valve 5; the micro-switch 14 is connected to the ignition device 8 to control the ignition device 8; a trigger tray 511 capable of rotating with the valve rod 51 is connected to the valve rod 51; in an initial state, the micro-switch 14 is not triggered by the trigger tray 511, only when the valve rod 5 is pressed down, the trigger tray 511 is capable of triggering the micro-switch 14, so as to make the ignition device 8 to ignite.

[0029] The temperature control system further comprises a potentiometer 10 and a circuit board 11 with a display screen 111 which are in communication with each other; the potentiometer 10 is disposed in upper portion of the temperature-controlled gas valve 5, a rotor in the potentiometer 10 is partially sheathed on the valve rod 51 of the temperature-controlled gas valve 5 and is capable of being driven by the valve rod 51 to rotate to detect the angle of rotation of the valve rod 51; and the display screen 111 on the circuit board 11 is capable of displaying the set temperature according to the angle of rotation of the valve rod 51. The potentiometer 10 is a purchased part, and is commercially-available. The specific internal structure of the potentiometer is not shown in the drawings.

[0030] The temperature control system further comprises a temperature detector 12 in communication with the circuit board 11; the temperature detector 12 extends into the oven chamber 1 to detect the current temperature in the oven chamber 1, and transmits the current temperature to the circuit board 11; and the display screen 111 on the circuit board 11 is capable of displaying the current temperature in the oven chamber 1.

[0031] The temperature control system further comprises a flame detection needle 13 in communication with the circuit board 11; the flame detection needle 13 extends into the oven chamber 1 to detect whether the burners 2 are burning; and a flame indicator light 112 for displaying whether the burners 2 are burning is disposed on the circuit board 11.

[0032] The operation principle and process of the temperature control system of a gas oven will be described below.

[0033] The valve rod 51 of the temperature-controlled gas valve 5 is pressed down and rotated anticlockwise to the set angle (such as 50 degrees), and the valve rod 51 drives the trigger tray 511 to trigger the micro-switch 14 to give out a signal indicating that ignition can be performed. Meanwhile, the valve rod 51 drives the rotor in the potentiometer 10 to rotate to give out a signal to the circuit board 11. The angle of rotation is equal to the set temperature, and the set temperature will be displayed on the display screen 111 of the circuit board 11. After the gas is fed and the ignition is performed, the three burners 2 are all in a high fire state.

[0034] When the bonnet is opened, the internal temperature is mixed with the external temperature, and the temperature sensed by the temperature sensing rod 4 is lower than the set temperature, so that the regulating mechanism 53 is in a maximum flow state, and the temperature (fire) can be regulated by the rotation of the valve rod 51. When the bonnet is closed, a relatively closed barbecuing space is formed, and the temperature of air in the oven chamber 1 is increased. At this time, the temperature sensing rod 4 plays a role. In the beginning stage, the temperature in the oven chamber 1 does not reach the set temperature, the air outlet end of the temperature-controlled gas valve 5 outputs gas at a high flow, and the burners 2 are in a high fire state. When the temperature in the oven chamber 1 is higher than the set temperature, the regulating mechanism 53 in the temperature-controlled gas valve 5 acts to reduce the gas outlet amount at the gas outlet end of the temperature-controlled gas valve 5, and the burners 2 are in a low fire state. When the temperature in the oven chamber 1 is lower than the set temperature, the regulating mechanism 53 in the temperature-controlled gas valve 5 acts to increase the gas outlet amount at the gas outlet end of the temperature-controlled gas valve 5, and the burners 2 are in the high fire state again, so that the barbecue functions as a gas oven. Thus, the gas oven with a bonnet has the barbecuing function of the conventional oven and can also has the function of the gas oven

[0035] The action principles of the temperature sensing rod and the regulating mechanism are the prior art and will not be repeated here.

[0036] FIG. 5 shows a second preferred embodiment of the present invention.

[0037] This embodiment differs from the above embodiment in that: the gas distribution mechanism comprises a multi-pass connector 6 with a plurality of outlet ends connected to the gas outlet 52 of the temperature-controlled gas valve 5, and a gas pipe 61 is connected between each outlet end of the multi-pass connector 6 and the corresponding gas nozzle 3.

[0038] It is to be noted that, in the description of this embodiment, orientations or location relationships indicated by terms such as front, behind, left, right, upper, lower are the orientations and location relationships illustrated on the basis of the accompany drawings. Such terms are used just for ease of describing the present invention and simplifying the description, and it is not indicated or implied that the stated device or element must have a specific orientation or must be constructed and operated in the specific orientation, and shall not be interpreted as any limitation to the present invention. Terms mounted, connected to and connected with should be understood in a broad sense. For example, the connection may be fixed connection or detachable connection or integral connection. The connection may be direct connection, or indirect connection with a mediator therebetween. The connection may be the communication between two elements. For a person of ordinary skill in the art, the specific meaning of the aforementioned terms in the present invention can be understood in specific circumstances.