Combustor and gas cooker comprising same

Abstract

The utility model provides a burner and a gas stove comprising the same, the burner comprises an inner ring fire cover, an outer ring fire cover, a gas control valve, a timing control unit and a first thermocouple, a detection end of the first thermocouple is arranged corresponding to a fire hole of the inner ring fire cover, and a circuit breaking structure of the timing control unit is in signal connection with the gas control valve. The combustor further comprises a second thermocouple, the detection end of the second thermocouple corresponds to the fire hole of the outer ring fire cover and is relatively far away from the fire hole of the inner ring fire cover, and the second thermocouple is in signal connection with a timing switch of the timing control unit. Whether the outer ring fire cover burns or not is used as the basis for turning off the burner at regular time, so that when the outer ring fire cover is extinguished, the second thermocouple starts the timing control unit, the gas control valve can be turned off after a period of time delay, and the situation that continuous heating is caused when small fire is forgotten to be turned off is avoided.

Description

Technical Field

[0001] The utility model relates to a burner and a gas cooker comprising the burner. Background Art

[0002] Nowadays, when using gas stoves, users often cook over low heat for a long time. Since low heat is a relatively small fire, users often put a pot on the burner and after the stove is turned to low heat, the flame is completely blocked by the pot and is not easy to be found. Users may easily forget to turn off the fire, which poses a safety hazard.

[0003] In order to solve the problem, the current existing technical solutions usually set a fire indicator light on the stove surface to remind the user that the cooking is in a low-fire state through lights or graphic images. Alternatively, as provided by the patent of Chinese Patent Publication No. CN217952363U, a timing control unit is set to be connected with the gas control valve signal to turn the fire off based on the countdown of the time preset by the user in the timing control unit. However, this fire-off solution still needs to rely on the user's memory to turn on the timing device or actively turn off the fire. If the user forgets to turn on the timing device, the low fire will continue to burn, which poses certain safety hazards. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defect in the prior art that users easily forget to turn off the fire when cooking for a long time with a low fire, which poses a safety hazard, and to provide a burner and a gas cooker including the same.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] A burner comprises an inner ring fire cover, an outer ring fire cover, a gas control valve, a timing control unit and a first thermocouple, wherein the detection end of the first thermocouple is arranged corresponding to the fire hole of the inner ring fire cover, and the circuit breaker structure of the timing control unit is signal-connected to the gas control valve. The burner also comprises a second thermocouple, wherein the detection end of the second thermocouple is arranged corresponding to the fire hole of the outer ring fire cover and is relatively far away from the fire hole of the inner ring fire cover, and the second thermocouple is signal-connected to the timing switch of the timing control unit.

[0007] The burner, under the premise of setting a first thermocouple corresponding to the fire hole of the inner ring fire cover to achieve flameout protection, further sets a second thermocouple corresponding to the fire hole of the outer ring fire cover, and makes the second thermocouple relatively far away from the fire hole of the inner ring fire cover, so as to detect the combustion state of the outer ring fire cover of the burner through the second thermocouple. Further, the signal between the second thermocouple and the timing switch of the timing control unit is connected, so that the timing control unit is started when the outer ring fire cover is extinguished, and then the timing control unit can delay closing the gas control valve, so as to achieve the purpose of delayed flameout, and avoid the safety hazard caused by the user forgetting to turn down the fire.

[0008] This structural setting scheme uses whether the outer ring fire cover is burning as the basis for timing to shut down the burner. When the outer ring fire cover is burning normally, the timing control unit will not start and will not affect the user's cooking. When the outer ring fire cover is extinguished, the second thermocouple starts the timing control unit, so that the gas control valve can be delayed in closing, so as to avoid the situation where forgetting to turn off the low fire causes continuous heating.

[0009] Preferably, the inner ring fire cover and the outer ring fire cover are concentrically arranged, and an annular gap is formed between the inner ring fire cover and the outer ring fire cover, the first thermocouple is arranged in the annular gap, and the detection end of the first thermocouple corresponds to the fire hole arranged in the inner ring fire cover toward the annular gap.

[0010] The first thermocouple is arranged by utilizing the annular gap formed between the inner ring fire cover and the outer ring fire cover, so as to reasonably utilize the space and make the structure of the burner more compact.

[0011] Preferably, the second thermocouple is also arranged in the annular gap, and the detection end of the second thermocouple corresponds to the fire hole arranged in the outer ring fire cover toward the annular gap.

[0012] The second thermocouple is arranged by utilizing the annular gap formed between the inner ring fire cover and the outer ring fire cover, so as to reasonably utilize the space and make the structure of the burner more compact. Compared with the solution of arranging the second thermocouple outside the outer ring fire cover, this solution arranges the second thermocouple inside the outer ring fire cover, so as to make the diameter size of the entire burner smaller.

[0013] Preferably, the burner also includes a liquid collecting pan, and a through hole is opened in the surface of the liquid collecting pan in the area corresponding to the annular gap, the first thermocouple and the second thermocouple both pass through the through hole and extend to the annular gap, the first thermocouple extends toward the fire hole of the inner ring fire cover after passing through the through hole, and the second thermocouple extends toward the fire hole of the outer ring fire cover after passing through the through hole.

[0014] By extending the first thermocouple and the second thermocouple from the same through hole of the liquid collecting pan, the number of openings on the liquid collecting pan is reduced, thereby avoiding the potential risk of overflow liquid leaking downwards.

[0015] Preferably, the burner further includes a heat insulating member, which is disposed between the housing of the first thermocouple and the housing of the second thermocouple and extends downward to the through hole.

[0016] By arranging a heat insulating member between the housing of the first thermocouple and the housing of the second thermocouple, the ability of the adjacently arranged first thermocouple and second thermocouple to transfer heat through the housing is reduced, thereby avoiding misjudgment.

[0017] Preferably, the thermal insulation member is connected to the outer shell of the first thermocouple and the outer shell of the second thermocouple respectively by bonding or welding.

[0018] The heat insulating member is connected to the shell of the first thermocouple and the shell of the second thermocouple by bonding or welding, so that the first thermocouple and the second thermocouple form a whole, which is convenient for processing and manufacturing, and also convenient for overall installation at the through hole of the liquid receiving tray.

[0019] Preferably, along the radial direction of the burner, the surface of the outer ring fire cover has a relatively convex convex surface and a relatively concave concave surface, the convex surface and the concave surface are alternately arranged along the circumferential direction of the burner, and the fire holes of the outer ring fire cover are respectively arranged on the convex surface and the concave surface.

[0020] By alternately arranging convex surfaces and concave surfaces on the surface of the outer ring fire cover along the radial direction of the burner, and setting fire holes on the convex surface and the concave surface respectively, the heating distribution of the outer ring fire cover in the radial direction of the burner is improved to meet the user's needs for uniform heating.

[0021] Preferably, the detection end of the second thermocouple is arranged corresponding to the fire hole of the outer ring fire cover at the recessed surface, and the detection end of the second thermocouple is located between two adjacent protruding surfaces of the outer ring fire cover.

[0022] By setting the detection end of the second thermocouple corresponding to the recessed surface and locating it between the two protruding surfaces, the ability of transferring heat from the fire hole of the outer ring fire cover to the second thermocouple is improved, so that the second thermocouple can reflect the combustion condition of the outer ring fire cover more accurately and reliably, avoiding misjudgment of the second thermocouple.

[0023] Preferably, the timing time of the timing control unit is defined as t, and the value range of t is 30 minutes to 50 minutes.

[0024] By constraining the timing time t within the range of 30 minutes to 50 minutes, it is possible to avoid the timing time being too long, which may cause the low fire state to continue for too long and damage the pots and stoves. It is also possible to avoid the timing time being too short, which may cause the user to turn off the fire when cooking normally on a low fire, affecting the user experience.

[0025] A gas cooker comprises the burner as described above.

[0026] The gas cooker uses the burning of the outer ring fire cover as the basis for timing the closing of the burner by setting a second thermocouple. When the outer ring fire cover is burning normally, the timing control unit is not started, which does not affect the user's cooking. When the outer ring fire cover is extinguished, the second thermocouple starts the timing control unit, so that the gas control valve can be closed with a delay, so as to avoid the situation where forgetting to turn off the low fire causes continuous heating.

[0027] The positive and progressive effects of the utility model are:

[0028] In the burner and the gas cooker containing the same, a second thermocouple is set to use whether the outer ring fire cover is burning as a basis for timing to shut down the burner. When the outer ring fire cover is burning normally, the timing control unit is not started and does not affect the user's cooking; when the outer ring fire cover is extinguished, the second thermocouple starts the timing control unit, so that the gas control valve can be closed after a delay of a period of time, so as to avoid the situation where forgetting to turn off the low fire causes continuous heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The figure is a schematic structural diagram of a burner according to an embodiment of the present utility model.

[0030] Figure 2 The figure is a schematic diagram of the signal connection relationship of a burner according to an embodiment of the present utility model.

[0031] Figure 3 It is a cross-sectional view of a burner according to an embodiment of the present invention.

[0032] Figure 4 The figure is a schematic structural diagram of a first thermocouple and a second thermocouple according to an embodiment of the present utility model.

[0033] Figure 5 This is a schematic structural diagram of an outer ring fire cover according to an embodiment of the utility model.

[0034] Description of reference numerals:

[0035] Burner 10, radial direction A, circumferential direction B

[0036] Inner ring fire cover 1, inner ring fire hole 11

[0037] Outer ring fire cover 2, outer ring fire hole 21, convex surface 22, concave surface 23

[0038] Gas control valve 3, gas nozzle 31, ejector tube 32, gas base 33

[0039] Timing control unit 4

[0040] First thermocouple 5

[0041] Second thermocouple 6

[0042] Annular gap 7

[0043] Liquid tray 8, through hole 81

[0044] Thermal insulation 9 DETAILED DESCRIPTION

[0045] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0046] The utility model provides a burner 10 which can be applied to a gas cooker. Figure 1 and Figure 2 As shown, it includes an inner ring fire cover 1, an outer ring fire cover 2, a gas control valve 3, a timing control unit 4 and a first thermocouple 5. The gas control valve 3 is used to connect to an external gas source. After the gas is split and limited by the valve body of the gas control valve 3, it is sprayed to the corresponding ejector pipe 32 through two gas nozzles 31, and then the air is ejected in the ejector pipe 32 and then flows to the gas base 33, and finally flows out from the fire holes of the inner ring fire cover 1 and the outer ring fire cover 2 and ignites to achieve the purpose of heating.

[0047] Among them, Figure 1 and Figure 2 As shown, a first thermocouple 5 is provided on the burner 10, and the detection end of the first thermocouple 5 is provided corresponding to the inner ring fire hole 11 of the inner ring fire cover 1. The flame of the inner ring fire hole 11 heats the first thermocouple 5 to generate an electromotive force. The first thermocouple 5 is connected to the gas control valve 3 by signal, so that after the flame of the inner ring fire hole 11 is extinguished, the potential difference is transmitted to the gas control valve 3, so as to close the gas control valve 3 and extinguish the flame. At the same time, a timing control unit 4 is also provided on the burner 10, and the circuit breaker structure of the timing control unit 4 is also connected to the signal between the gas control valve 3. After the timing control unit 4 starts timing and reaches the preset time, the potential difference is transmitted to the gas control valve 3 through the circuit breaker structure, so as to close the gas control valve 3 and extinguish the flame.

[0048] In this embodiment, in order to solve the problem that users tend to forget to turn off the fire when switching to a low fire state, which poses a safety hazard, Figure 1 and Figure 2As shown, the burner 10 also includes a second thermocouple 6, the detection end of the second thermocouple 6 is set corresponding to the outer ring fire hole 21 of the outer ring fire cover 2, and is relatively far away from the inner ring fire hole 11 of the inner ring fire cover 1. The second thermocouple 6 is connected by signal to the timing switch of the timing control unit 4, so that the first thermocouple 5 is set corresponding to the inner ring fire hole 11 of the inner ring fire cover 1 to achieve flameout protection, and the second thermocouple 6 is also set corresponding to the outer ring fire hole 21 of the outer ring fire cover 2, and the second thermocouple 6 is relatively far away from the inner ring fire hole 11 of the inner ring fire cover 1, so as to detect the combustion state of the outer ring fire cover 2 of the burner 10 through the second thermocouple 6. Further, the second thermocouple 6 is connected by signal to the timing switch of the timing control unit 4, so that the timing control unit 4 is started when the outer ring fire cover 2 is extinguished, and then the timing control unit 4 can delay the closing of the gas control valve 3, so as to achieve the purpose of delayed flameout, and avoid the safety hazard caused by the user forgetting to turn down the fire.

[0049] This structural setting scheme uses whether the outer ring fire cover 2 is burning as the basis for timing the shutdown of the burner 10. When the outer ring fire cover 2 is burning normally, the timing control unit 4 is not started and does not affect the user's cooking. When the outer ring fire cover 2 is extinguished, the second thermocouple 6 starts the timing control unit 4, so that the gas control valve 3 can be delayed in closing, so as to avoid the situation where forgetting to turn off the low fire causes continuous heating.

[0050] For example, when the user turns on the flame of the inner ring fire cover 1 and the flame of the outer ring fire cover 2 at the same time, the flame of the outer ring fire cover 2 heats the second thermocouple 6 to generate an electromotive force. At this time, the timing control unit 4 is not started and the timing is not started. When the user turns on the flame of the inner ring fire cover 1 and turns off the flame of the outer ring fire cover 2, the second thermocouple 6 transmits the potential difference to the timing switch of the timing control unit 4 after the flame of the outer ring fire hole 21 is extinguished. The timing control unit 4 starts timing and closes the gas control valve 3 after the timing is completed to avoid forgetting to turn off the small fire.

[0051] Specifically, the timing time t of the timing control unit 4 can be set according to actual needs. In the present embodiment, the timing time is 30 minutes, that is, the gas control valve 3 is closed 30 minutes after the flame of the outer ring fire hole 21 is extinguished. In other embodiments, it can also be set as needed according to actual conditions. The more preferred value range is 30 minutes to 50 minutes to avoid the timing time being too long, resulting in the low fire state lasting too long and damaging the pots and stoves. At the same time, it also avoids the timing time being too short, resulting in the user's normal low fire cooking being turned off, affecting the user experience.

[0052] like Figure 1As shown, the inner fire ring cover 1 and the outer fire ring cover 2 are concentrically arranged, and an annular gap 7 is formed between the inner fire ring cover 1 and the outer fire ring cover 2, and the first thermocouple 5 and the second thermocouple 6 are both arranged in the annular gap 7. Among them, the detection end of the first thermocouple 5 corresponds to the inner fire hole 11 arranged in the direction of the annular gap 7 of the inner fire ring cover 1. And the detection end of the second thermocouple 6 corresponds to the outer fire hole 21 arranged in the direction of the annular gap 7 of the outer fire ring cover 2. This structural setting scheme arranges the first thermocouple 5 and the second thermocouple 6 by utilizing the annular gap 7 formed between the inner fire ring cover 1 and the outer fire ring cover 2, so as to reasonably utilize the space and make the structure of the burner 10 more compact.

[0053] Compared with the solution of arranging the second thermocouple 6 on the outside of the outer ring fire cover 2 , this solution arranges the second thermocouple 6 on the inside of the outer ring fire cover 2 , so that the diameter of the entire burner 10 can be smaller.

[0054] like Figure 3 As shown, the burner 10 also includes a liquid collecting pan 8, and a through hole 81 is opened in the surface of the liquid collecting pan 8 corresponding to the annular gap 7. The first thermocouple 5 and the second thermocouple 6 both pass through the through hole 81 and extend to the annular gap 7. After passing through the through hole 81, the first thermocouple 5 extends toward the inner ring fire hole 11 of the inner ring fire cover 1, and the second thermocouple 6 extends from the through hole 81 to the outer ring fire hole 21 of the outer ring fire cover 2. By extending the first thermocouple 5 and the second thermocouple 6 from the same through hole 81 of the liquid collecting pan 8, the number of openings on the liquid collecting pan 8 is reduced, thereby avoiding the potential risk of overflow liquid leaking downward.

[0055] like Figure 3 and Figure 4 As shown, the burner 10 further includes a heat insulating member 9, which is disposed between the housing of the first thermocouple 5 and the housing of the second thermocouple 6, and extends downward to the through hole 81, and further extends downward in this embodiment. By disposing the heat insulating member 9 between the housing of the first thermocouple 5 and the housing of the second thermocouple 6, the ability of the adjacently arranged first thermocouple 5 and second thermocouple 6 to transfer heat through the housing is reduced, thereby avoiding misjudgment.

[0056] Specifically, the heat insulating member 9 is connected to the outer shell of the first thermocouple 5 and the outer shell of the second thermocouple 6 by bonding. In this way, the heat insulating member 9 is connected to the outer shell of the first thermocouple 5 and the outer shell of the second thermocouple 6, so that the first thermocouple 5 and the second thermocouple 6 form a whole, which is convenient for processing and manufacturing, and is also convenient for the whole to be installed at the through hole 81 of the liquid receiving tray 8. Of course, in other embodiments, the heat insulating member 9 can also be connected to the outer shell of the first thermocouple 5 and the outer shell of the second thermocouple 6 by welding.

[0057] like Figure 5As shown, along the radial direction A of the burner 10, the surface of the outer ring fire cover 2 has a relatively convex convex surface 22 and a relatively concave concave surface 23, wherein each convex surface 22 and concave surface 23 are alternately arranged along the circumferential direction B of the burner 10, and the outer ring fire holes 21 of the outer ring fire cover 2 are respectively arranged on the convex surface 22 and the concave surface 23. By alternately arranging the convex surface 22 and the concave surface 23 on the surface of the outer ring fire cover 2 along the radial direction A of the burner 10, and respectively arranging the outer ring fire holes 21 on the convex surface 22 and the concave surface 23, the heating distribution of the outer ring fire cover 2 in the radial direction A of the burner 10 is improved to meet the user's demand for uniform heating.

[0058] Among them, the detection end of the second thermocouple 6 is set corresponding to the outer ring fire hole 21 located at the recessed surface 23 of the outer ring fire cover 2, and the detection end of the second thermocouple 6 is located between two adjacent convex surfaces 22 to improve the ability of heat at the fire hole of the outer ring fire cover 2 to be transferred to the second thermocouple 6, so that the second thermocouple 6 can relatively more accurately and reliably reflect the combustion condition of the outer ring fire cover 2, avoiding misjudgment of the second thermocouple 6.

Claims

1. A burner, comprising an inner ring fire cover, an outer ring fire cover, a gas control valve, a timing control unit and a first thermocouple, wherein the detection end of the first thermocouple is arranged corresponding to the fire hole of the inner ring fire cover, and the circuit breaker structure of the timing control unit is connected to the gas control valve by signal, characterized in that: The burner also includes a second thermocouple, the detection end of the second thermocouple is arranged corresponding to the fire hole of the outer ring fire cover and relatively far away from the fire hole of the inner ring fire cover, and the second thermocouple is signal-connected to the timing switch of the timing control unit.

2. The burner according to claim 1, characterized in that The inner ring fire cover and the outer ring fire cover are concentrically arranged, and an annular gap is formed between the inner ring fire cover and the outer ring fire cover. The first thermocouple is arranged in the annular gap, and the detection end of the first thermocouple corresponds to the fire hole arranged in the inner ring fire cover toward the annular gap.

3. The burner according to claim 2, characterized in that The second thermocouple is also arranged in the annular gap, and the detection end of the second thermocouple corresponds to the fire hole arranged in the outer ring fire cover toward the annular gap.

4. The burner according to claim 3, characterized in that The burner also includes a liquid collecting pan, and a through hole is opened in the surface of the liquid collecting pan in the area corresponding to the annular gap. The first thermocouple and the second thermocouple both pass through the through hole and extend to the annular gap. After passing through the through hole, the first thermocouple extends toward the fire hole of the inner ring fire cover, and after passing through the through hole, the second thermocouple extends toward the fire hole of the outer ring fire cover.

5. The burner according to claim 4, characterized in that The burner further includes a heat insulating member, which is disposed between the housing of the first thermocouple and the housing of the second thermocouple and extends downward to the through hole.

6. The burner according to claim 5, characterized in that The thermal insulation member is connected to the outer shell of the first thermocouple and the outer shell of the second thermocouple respectively by bonding or welding.

7. The burner according to claim 1, characterized in that Along the radial direction of the burner, the surface of the outer ring fire cover has a relatively convex convex surface and a relatively concave concave surface, the convex surface and the concave surface are alternately arranged along the circumferential direction of the burner, and the fire holes of the outer ring fire cover are respectively arranged on the convex surface and the concave surface.

8. The burner according to claim 7, characterized in that The detection end of the second thermocouple is arranged corresponding to the fire hole of the outer ring fire cover at the recessed surface, and the detection end of the second thermocouple is located between two adjacent convex surfaces of the outer ring fire cover.

9. The burner according to any one of claims 1 to 8, characterized in that: The timing time of the timing control unit is defined as t, and the value range of t is 30min to 50min.

10. A gas cooker, characterized in that: It comprises the burner as claimed in any one of claims 1 to 9.

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