Fire retaining method of gas stove and gas stove

Abstract

The invention relates to the technical field of stoves, and discloses a fire retaining method of a gas stove and the gas stove, a stove burner of the gas stove comprises an inner ring fire cover, a fire retaining hole is formed in the inner ring fire cover, a heat collecting assembly is arranged on one side of the fire retaining hole, and the heat collecting assembly communicates with the fire retaining hole; the thermocouple located on one side of the inner ring fire cover extends into the heat collection assembly and makes contact with the heat collection assembly. The stove burner is connected with the fuel gas inlet through a pipeline, and a flow regulating valve is arranged on the pipeline; the fire keeping method of the gas stove comprises the following steps that the gas stove is started, and a stove burner enters a fire keeping stage after successful ignition; detecting the working temperature of the thermocouple, and judging the blockage degree of the fire retaining hole according to the working temperature of the thermocouple; the opening degree of the flow adjusting valve is adjusted according to the blockage degree of the fire retaining hole so as to adjust fire power, so that blockages in the fire retaining hole are grilled to be carbonized at a high temperature, the problem of blockage of the fire retaining hole is solved, and the heat collection assembly conducts heat to the thermocouple so as to ensure successful fire retaining.

Description

Technical Field

[0001] The present invention relates to the technical field of stoves, and in particular to a fire protection method for a gas stove and a gas stove. Background Art

[0002] The ignition needle and thermocouple of the stove burner are extremely important, and are related to the ignition and flame-keeping performance of the stove burner. The ignition needles and thermocouples of most existing stove burners are set on two opposite sides of the outer periphery of the inner ring fire cover, and the positions are set far away, resulting in poor anti-interference ability of the ignition needle and thermocouple, low anti-blocking performance, and poor flame-keeping performance due to blockage of the flame-keeping hole. Therefore, it is urgent to design a flame-keeping method for a gas stove to avoid poor flame-keeping performance due to blockage of the flame-keeping hole. Summary of the invention

[0003] The purpose of the present invention is to provide a method for keeping a fire of a gas stove and a gas stove, which solves the technical problem in the prior art that the fire keeping performance is poor due to the blockage of the fire keeping hole.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] The present invention provides a method for maintaining fire of a gas stove, wherein a stove burner of the gas stove comprises an inner fire ring cover, a fire maintenance hole is arranged on the inner fire ring cover, a heat collecting component is arranged on one side of the fire maintenance hole, the heat collecting component is communicated with the fire maintenance hole, a thermocouple located on one side of the inner fire ring cover extends into the heat collecting component and contacts with the heat collecting component; the stove burner is connected to the gas inlet of the gas stove through a pipeline, and a flow regulating valve is arranged on the pipeline;

[0006] The gas stove is started, and the stove burner enters the fire protection stage after ignition is successful;

[0007] Detecting the working temperature of the thermocouple, and judging the degree of blockage of the fire-preserving hole according to the working temperature of the thermocouple;

[0008] The opening of the flow regulating valve is adjusted according to the blocking degree of the fire-keeping hole to adjust the fire power.

[0009] The stove burner determines the blockage degree of the fire protection hole according to the working temperature of the thermocouple, and adjusts the fire power by adjusting the opening of the flow control valve, so that the blockage in the protection hole is roasted at high temperature until it is carbonized, thereby solving the problem of blockage in the fire protection hole. In this process, the heat collection component conducts heat to the thermocouple so that the thermocouple can reach the suction valve temperature to achieve successful fire protection.

[0010] As a preferred solution of the above-mentioned method for maintaining the fire of the gas stove, after a preset time t0 when the burner of the stove is successfully ignited, the working temperature of the thermocouple is detected;

[0011] If the operating temperature T of the thermocouple satisfies T1 < T < T2 and the duration is greater than t1, it is confirmed that the fire protection hole is in a semi-blocked state;

[0012] If the operating temperature T of the thermocouple satisfies T ≤ T1 and the duration is greater than t2, it is confirmed that the fire protection hole is in a fully blocked state.

[0013] Judging the blocking state of the fire protection hole according to the operating temperature and duration of the thermocouple, this judgment method is relatively simple, and the operating temperature and duration of the thermocouple are easy to obtain.

[0014] As a preferred scheme of the fire protection method of the above gas stove, when the fire protection hole is in a semi-blocked state, adjust the opening of the flow regulating valve to adjust the firepower to the medium fire state;

[0015] When the fire protection hole is in a fully blocked state, adjust the opening of the flow regulating valve to adjust the firepower to the high fire state.

[0016] When the fire protection hole is in a semi-blocked state, adjust the flow regulating valve to adjust the firepower to the medium fire state; when the fire protection hole is in a fully blocked state, adjust the flow regulating valve to adjust the firepower to the high fire state, so that the intensity of the firepower can be correspondingly adjusted according to the blocking state of the fire protection hole, so as to achieve successful fire protection.

[0017] As a preferred scheme of the fire protection method of the above gas stove, after the preset time t0 when the burner of the stove ignites successfully, detect the operating temperature of the thermocouple;

[0018] If the operating temperature T of the thermocouple satisfies T1 < T < T2 and the duration is less than or equal to t1, the gas stove operates normally until it is turned off;

[0019] If the operating temperature T of the thermocouple satisfies T ≤ T1 and the duration is less than or equal to t2, the gas stove operates normally until it is turned off.

[0020] Meeting the above conditions, that is, the fire protection is successful, and the gas stove can operate normally until it is turned off.

[0021] As a preferred scheme of the fire protection method of the above gas stove, during the fire protection stage, after adjusting the flow regulating valve, continue to detect and judge whether the operating temperature T of the thermocouple satisfies T ≥ T2 and the duration exceeds t3. If so, adjust the opening of the flow regulating valve to make the firepower return to the low fire state, and the gas stove operates until it is turned off;

[0022] If the operating temperature T of the thermocouple is T ≥ T2 and the duration does not exceed t3, adjust the flow regulating valve to keep the firepower in the high fire state until the operating temperature T of the thermocouple is T ≥ T2 and the duration exceeds t3, and then adjust it to the low fire state to make the gas stove operate until it is turned off.

[0023] The above arrangement is to enable the stove burner to maintain the stability of the combustion condition.

[0024] As a preferred solution of the above-mentioned method for maintaining fire of the gas stove, the method for maintaining fire of the gas stove further comprises an ignition stage: the burner is started, the opening of the flow regulating valve is adjusted so that the firepower is in a normal low-fire state, and the stove burner is ignited;

[0025] Determine whether the ignition is successful;

[0026] If yes, then enter the fire protection stage;

[0027] If not, the opening of the flow regulating valve is adjusted to adjust the firepower to a high fire state, and the fire protection stage is entered after the ignition is successful.

[0028] In the ignition stage, ignition is carried out with a small fire. If the ignition is successful, the fire maintenance stage is entered; if it is unsuccessful, the opening of the flow control valve is adjusted to adjust the firepower to a high fire state so that the ignition can be successful.

[0029] As a preferred solution of the fire protection method of the gas stove, during the ignition stage, if the ignition still fails after the firepower is adjusted to a high fire state, the gas stove will alarm the user.

[0030] During the ignition stage, if the ignition still fails after adjusting the firepower, the gas stove will alarm the user to promptly remind the user of the ignition failure.

[0031] As a preferred solution of the fire protection method of the above-mentioned gas stove, a heat collecting inner cavity is provided on the heat collecting component, a fire outlet hole connected with the heat collecting inner cavity is provided on the side wall of the heat collecting component, the fire outlet hole is connected with the fire protection hole, a heat conducting structure is provided in the heat collecting inner cavity, and the thermocouple extends into the heat collecting inner cavity and contacts with the heat conducting structure.

[0032] A heat-conducting structure is provided in the heat-collecting cavity. The thermocouple located on one side of the inner ring fire cover extends into the heat-collecting cavity and contacts with the heat-conducting structure. When the gas stove works normally, the fire from the fire-keeping hole heats the thermocouple through the fire outlet hole to ensure successful ignition. When the fire-keeping hole is blocked, the heat collecting component is heated and the heat-conducting structure is used to conduct heat to the thermocouple.

[0033] As a preferred solution of the fire protection method of the gas stove, the heat collecting component is an annular structure made of a heat collecting sheet, and the heat collecting inner cavity is formed inside the heat collecting sheet.

[0034] The heat collecting component is an annular structure made of heat collecting sheets. The structure is simple and easy to prepare, and it is easy to heat the thermocouple extending into the heat collecting cavity.

[0035] The present invention also provides a gas stove, which adopts the above-mentioned gas stove fire-keeping method to keep the fire, the gas stove comprises a stove burner, the stove burner comprises an inner ring fire cover, the inner ring fire cover is provided with a fire-keeping hole, a heat collecting component is provided on one side of the fire-keeping hole, the heat collecting component is connected with the fire-keeping hole, and a thermocouple located on one side of the inner ring fire cover extends into the heat collecting component and contacts with the heat collecting component;

[0036] The stove burner is connected to the gas inlet of the gas stove through a pipeline, and a flow regulating valve is arranged on the pipeline, and the flow regulating valve is used to adjust the flow of gas entering the stove burner.

[0037] The gas stove is provided with a heat collecting component on one side of the fire protection hole for transferring heat to the thermocouple. The flow regulating valve adjusts the flow of gas entering the burner of the stove. When the fire protection hole is blocked, the opening and closing degree of the flow regulating valve is controlled to increase the fire power to ensure that the thermocouple can reach the suction valve temperature. The blockage of the protection hole can also be roasted at high temperature until it is carbonized, thereby solving the problem of blockage of the fire protection hole.

[0038] Beneficial effects of the present invention:

[0039] The fire protection method for a gas stove proposed in the present invention determines the blockage degree of the fire protection hole according to the working temperature of the thermocouple, and adjusts the fire power by adjusting the opening of the flow control valve, so that the blockage in the protection hole is roasted at high temperature until it is carbonized, thereby solving the problem of blockage of the fire protection hole. In this process, the heat collection component conducts heat to the thermocouple so that the thermocouple can reach the suction valve temperature to achieve successful fire protection.

[0040] The gas stove proposed in the present invention has a heat collecting component arranged on one side of the fire protection hole for transferring heat to the thermocouple, and a flow regulating valve adjusts the flow of gas entering the burner of the stove. When the fire protection hole is blocked, the opening and closing degree of the flow regulating valve is controlled to increase the firepower, ensure that the thermocouple can reach the suction valve temperature, and can also roast the blockage in the protection hole at high temperature until it is carbonized, thereby solving the problem of blockage of the fire protection hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a structural schematic diagram of the gas stove provided by the present invention;

[0042] Figure 2 It is a structural schematic diagram of a stove burner provided by the present invention;

[0043] Figure 3 is a cross-sectional view of a stove burner provided by the present invention;

[0044] Figure 4 yes Figure 3The enlarged schematic diagram of point A in the middle;

[0045] Figure 5 It is a schematic diagram of the structure of the inner ring fire cover provided by the present invention;

[0046] Figure 6 It is a structural schematic diagram of the heat collection assembly provided by the present invention;

[0047] Figure 7 This is a first flow chart of the method for maintaining fire of a gas stove provided by the present invention;

[0048] Figure 8 This is the second flow chart of the method for maintaining fire of a gas stove provided by the present invention.

[0049] In the figure:

[0050] 1. Inner ring fire cover; 10. Inner gas mixing chamber; 11. Fire protection hole;

[0051] 2. Heat collection assembly; 20. Heat collection sheet; 21. Heat collection cavity; 22. Fire outlet; 23. Heat conduction structure; 24. Shielding plate;

[0052] 3. Thermocouple; 4. Outer ring fire cover; 5. Electrode needle; 6. Burner head; 7. Nozzle seat; 8. Control center; 9. Gas inlet; 13. Flow control valve; 14. On-off valve. DETAILED DESCRIPTION

[0053] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0054] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0056] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0057] like Figure 1-Figure 6 As shown, this embodiment provides a gas stove, including a stove burner, the stove burner is installed on the chassis through a nozzle seat 7, and the stove burner is connected to the gas inlet 9 through a pipeline (see Figure 3 ), a flow regulating valve 13 is provided on the pipeline, and the flow regulating valve 13 is used to adjust the flow of gas entering the stove burner.

[0058] Specifically, the stove burner includes a burner head 6, an outer ring fire cover 4, and an inner ring fire cover 1. The outer ring fire cover 4 is installed on the burner head 6. The inner ring fire cover 1 is arranged at the center of the outer ring fire cover 4. An inner gas mixing chamber 10 is arranged on the inner ring fire cover 1. A fire protection hole 11 connected to the inner gas mixing chamber 10 is arranged on the side wall of the inner ring fire cover 1. An electrode needle 5 and a heat collecting component 2 are arranged on one side of the inner ring fire cover 1. The electrode needle 5 is used for ignition. The heat collecting component 2 is arranged on one side of the inner ring fire cover 1. A heat collecting inner chamber 21 is arranged on the heat collecting component 2. A fire outlet hole 22 connected to the heat collecting inner chamber 21 is arranged on the side wall of the heat collecting component 2. The fire outlet hole 22 is connected to the fire protection hole 11. A heat conducting structure 23 is arranged in the heat collecting inner chamber 21. The thermocouple 3 located on one side of the inner ring fire cover 1 extends into the heat collecting inner chamber 21 and contacts with the heat conducting structure 23.

[0059] This embodiment also provides a method for maintaining the flame of a gas stove, which is applied to the above-mentioned gas stove, such as Figure 7 As shown, the method for maintaining fire of a gas stove comprises the following steps:

[0060] The gas stove starts, and after the burner of the stove is ignited successfully, it enters the fire protection stage;

[0061] Detecting the working temperature of the thermocouple 3, and judging the blocking degree of the fire-preserving hole 11 according to the working temperature of the thermocouple 3;

[0062] The opening of the flow regulating valve 13 is adjusted according to the blockage degree of the fire protection hole 11 to adjust the fire power.

[0063] When the gas stove is working normally, the fire of the fire protection hole 11 heats the thermocouple 3 through the fire outlet 22 to ensure successful ignition; when the fire protection hole 11 is blocked, the blockage degree of the fire protection hole 11 is determined by detecting the working temperature of the thermocouple 3, and the opening of the flow regulating valve 13 is adjusted according to the blockage degree of the fire protection hole 11 to adjust the fire power, so that the blockage in the fire protection hole 11 is roasted at high temperature to carbonize, thereby solving the problem of blockage of the fire protection hole 11. In this process, the heat collecting component 2 is used to conduct heat to the thermocouple 3 to ensure that the thermocouple 3 reaches the suction valve temperature to ensure successful fire protection.

[0064] Optionally, the flow regulating valve 13 and the thermocouple 3 are both connected to the control center 8. When the fire protection hole 11 is blocked, the working temperature of the thermocouple 3 is monitored by the control center 8 to control the opening and closing degree of the flow regulating valve 13, thereby increasing the firepower and ensuring that the thermocouple 3 can reach the suction valve temperature.

[0065] Optionally, an on-off valve 14 is further provided on the pipeline, and the on-off of the pipeline is controlled by the on-off valve 14 so as to facilitate flexible control according to demand.

[0066] In this embodiment, the heat collecting assembly 2 is an annular structure made of a heat collecting sheet 20, and a heat collecting inner cavity 21 is formed inside the heat collecting sheet 20. The heat collecting assembly 2 is an annular structure made of a heat collecting sheet 20, which is simple and easy to prepare, and it is easy to heat the thermocouple 3 extending into the heat collecting inner cavity 21.

[0067] Furthermore, if Figure 5 As shown, the top of the heat collecting sheet 20 is bent to form a shielding plate 24, and the shielding plate 24 is arranged above the outer side of the fire protection hole 11. The setting of the shielding plate 24 can prevent foreign objects from falling and blocking the fire protection hole 11.

[0068] In this embodiment, the heat conducting structure 23 is connected to the heat collecting sheet 20 and is arranged immediately below the fire outlet hole 22. The heat conducting structure 23 is connected to the heat collecting sheet 20 so that the two form an integral structure, which can achieve heat transfer. The heat conducting structure 23 is arranged immediately below the fire outlet hole 22 to avoid blocking the fire outlet hole 22 and affecting fire protection, and is conducive to transferring heat to the thermocouple 3.

[0069] In this embodiment, the heat conducting structure 23 is an annular structure, and the side of the heat conducting structure 23 facing the heat collecting inner cavity 21 is in contact with the thermocouple 3. The heat conducting structure 23 is an annular structure, which can evenly conduct heat to the thermocouple 3 and improve the uniformity of heat conduction.

[0070] In other embodiments, the heat-conducting structure 23 includes a plurality of heat-conducting blocks arranged along the circumference of the heat-collecting inner cavity 21, and the side of the heat-conducting block facing the heat-collecting inner cavity 21 is in contact with the thermocouple 3. The heat-collecting inner cavity 21 is provided with a plurality of heat-conducting blocks along its circumferential direction, and the thermocouple 3 can be evenly heat-conducted by the plurality of heat-conducting blocks, and the heat-conducting blocks have a simple structure and are relatively easy to prepare.

[0071] Optionally, a plurality of fire holes 22 are provided on the side wall of the heat collecting assembly 2, and the efficiency of successfully keeping the fire can be improved through the plurality of fire holes 22. In this embodiment, the plurality of fire holes 22 are arranged horizontally and vertically along the side wall of the heat collecting assembly 2, and such an arrangement has a more beautiful appearance. A plurality of fire keeping holes 11 are provided on the circumferential surface of the inner ring fire cover 1. The provision of the plurality of fire keeping holes 11 improves the efficiency of keeping the fire.

[0072] The stove burner achieves local heat gathering by adding a heat collecting component 2. When the gas stove works normally, the fire of the fire protection hole 11 heats the thermocouple 3 through the fire outlet 22 to ensure successful ignition; when the fire protection hole 11 is partially blocked, the working temperature of the thermocouple 3 is monitored to control the opening and closing degree of the flow regulating valve 13, so as to increase the firepower and ensure that the thermocouple 3 can reach the suction valve temperature; when the fire protection hole 11 is completely blocked, the heat collecting sheet 20 is heated, and the heat is transferred to the thermocouple 3 by the heat conducting structure 23 to control the opening and closing degree of the flow regulating valve 13, so as to increase the firepower and realize the suction valve of the thermocouple 3.

[0073] Specifically, Figure 8 As shown, the method for maintaining fire of a gas stove comprises the following steps:

[0074] The gas stove is started, the opening of the flow regulating valve 13 is adjusted to make the firepower in a normal low-fire state, and the stove burner is ignited;

[0075] Determine whether the ignition is successful;

[0076] If so, the fire protection phase is entered;

[0077] If not, the opening of the flow control valve 13 is adjusted to adjust the firepower to a high fire state, and the fire protection stage is entered after the ignition is successful.

[0078] In the ignition stage, ignition is performed by a small fire. If the ignition is successful, the fire protection stage is entered; if it is unsuccessful, the opening of the flow control valve 13 is adjusted to adjust the fire power to a high fire state so that the ignition can be successful. It should be noted that the method for judging the success of ignition belongs to the prior art and will not be repeated here.

[0079] During the ignition stage, if the ignition still fails after the firepower is adjusted to the high-fire state, the gas stove will give an alarm prompt to the user to timely remind the user that the ignition has failed. The alarm prompt can be a voice alarm or a light flashing alarm, and the specific alarm prompt can be set according to requirements.

[0080] After the preset time t0 when the burner of the cooking appliance ignites successfully, the working temperature of the thermocouple 3 is detected;

[0081] If the working temperature T of the thermocouple 3 satisfies T1 < T < T2 and the duration is greater than t1, it is confirmed that the fire protection hole 11 is in a semi-blocked state; if the working temperature T of the thermocouple 3 satisfies T1 < T < T2 and the duration is less than or equal to t1, the gas stove operates normally until it is turned off.

[0082] If the working temperature T of the thermocouple 3 satisfies T ≤ T1 and the duration is greater than t2, it is confirmed that the fire protection hole 11 is in a fully blocked state; if the working temperature T of the thermocouple 3 satisfies T ≤ T1 and the duration is less than or equal to t2, the gas stove operates normally until it is turned off.

[0083] Judging the blocking state of the fire protection hole 11 according to the working temperature of the thermocouple 3 and the duration is relatively simple, and the working temperature and duration of the thermocouple 3 are easy to obtain.

[0084] When the fire protection hole 11 is in a semi-blocked state, the opening degree of the flow regulating valve 13 is adjusted to adjust the firepower to the medium-fire state; when the fire protection hole 11 is in a fully blocked state, the opening degree of the flow regulating valve 13 is adjusted to adjust the firepower to the high-fire state, so that the intensity of the firepower can be correspondingly adjusted according to the blocking state of the fire protection hole 11, thereby achieving successful fire protection.

[0085] In this embodiment, the preset time t0 = 20s, T1 = 350 °C, T2 = 400 °C, t1 = 10s, t2 = 10s. In other embodiments, the numerical values of the various parameters can be adjusted according to requirements.

[0086] During the fire protection stage, after adjusting the flow regulating valve 13, continue to detect and judge whether the working temperature T of the thermocouple 3 satisfies T ≥ T2 and the duration exceeds the duration of t3. If so, adjust the opening degree of the flow regulating valve 13 to make the firepower return to the low-fire state, and the gas stove operates until it is turned off; if the working temperature T of the thermocouple 3 ≥ T2 and the duration does not exceed the duration of t3, adjust the opening degree of the flow regulating valve 13 to keep the firepower at the high-fire state until the working temperature T of the thermocouple ≥ T2 and the duration exceeds the duration of t3, and then adjust it to the low-fire state to make the gas stove operate until it is turned off. The above settings are to keep the combustion condition of the burner of the cooking appliance stable.

[0087] In this embodiment, t3=10s. In other embodiments, the value of t3 is not limited to 10s and can be adjusted according to specific needs.

[0088] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A method for maintaining fire in a gas stove, characterized in that: The burner of the gas stove includes an inner ring fire cover (1). A fire protection hole (11) is provided on the inner ring fire cover (1). A heat collection component (2) is provided on one side of the fire protection hole (11). The heat collection component (2) is communicated with the fire protection hole (11). A thermocouple (3) located on one side of the inner ring fire cover (1) extends into the heat collection component (2) and contacts the heat collection component (2). The burner of the gas stove is connected to the gas inlet (9) of the gas stove through a pipeline, and a flow regulating valve (13) is provided on the pipeline. When the gas stove is started, after the burner of the gas stove ignites successfully, it enters the fire protection stage. Detect the working temperature of the thermocouple (3), and judge the degree of blockage of the fire protection hole (11) according to the working temperature of the thermocouple (3). Adjust the opening degree of the flow regulating valve (13) according to the degree of blockage of the fire protection hole (11) to adjust the firepower.

2. The method for maintaining fire of a gas stove according to claim 1, characterized in that: After a preset time t0 when the burner of the gas stove ignites successfully, detect the working temperature of the thermocouple (3). If the working temperature T of the thermocouple (3) satisfies T1 < T < T2 and the duration is greater than t1, it is confirmed that the fire protection hole (11) is in a semi-blocked state. If the working temperature T of the thermocouple (3) satisfies T ≤ T1 and the duration is greater than t2, it is confirmed that the fire protection hole (11) is in a fully blocked state.

3. The method for maintaining fire of a gas stove according to claim 2, characterized in that: When the fire protection hole (11) is in a semi-blocked state, adjust the opening degree of the flow regulating valve (13) to adjust the firepower to the medium fire state. When the fire protection hole (11) is in a fully blocked state, adjust the opening degree of the flow regulating valve (13) to adjust the firepower to the high fire state.

4. The method for maintaining fire of a gas stove according to claim 1, characterized in that: After a preset time t0 when the burner of the gas stove ignites successfully, detect the working temperature of the thermocouple (3). If the working temperature T of the thermocouple (3) satisfies T1 < T < T2 and the duration is less than or equal to t1, the gas stove works normally until it is turned off. If the working temperature T of the thermocouple (3) satisfies T ≤ T1 and the duration is less than or equal to t2, the gas stove works normally until it is turned off.

5. The method for maintaining fire of a gas stove according to claim 3, characterized in that: During the fire protection stage, after adjusting the flow regulating valve (13), continue to detect and judge whether the working temperature T of the thermocouple (3) satisfies T ≥ T2 and the duration exceeds t3. If so, adjust the opening degree of the flow regulating valve (13) to restore the firepower to the low fire state, and the gas stove works until it is turned off. If the working temperature T of the thermocouple (3) ≥ T2 and the duration does not exceed t3, adjust the opening degree of the flow regulating valve (13) to keep the firepower in the high fire state until the working temperature T of the thermocouple (3) ≥ T2 and the duration exceeds t3, and then adjust it to the low fire state to make the gas stove work until it is turned off.

6. The method for maintaining fire of a gas stove according to claim 1, characterized in that: The fire protection method of the gas stove further includes an ignition stage: when the gas stove is started, adjust the opening degree of the flow regulating valve (13) to make the firepower in the normal low fire state, and the burner of the gas stove ignites. Judge whether the ignition is successful. If it is, enter the fire protection stage. If not, adjust the opening degree of the flow regulating valve (13) to adjust the firepower to the high fire state, and enter the fire protection stage after the ignition is successful.

7. The method for maintaining fire of a gas stove according to claim 6, characterized in that: In the ignition stage, if the ignition still fails after the firepower is adjusted to a high fire state, the gas stove will alarm the user.

8. The method for maintaining fire of a gas stove according to claim 1, characterized in that: The heat collecting component (2) is provided with a heat collecting inner cavity (21), the side wall of the heat collecting component (2) is provided with a fire outlet hole (22) connected to the heat collecting inner cavity (21), the fire outlet hole (22) is connected to the fire protection hole (11), a heat conducting structure (23) is provided in the heat collecting inner cavity (21), and the thermocouple (3) extends into the heat collecting inner cavity (21) and contacts the heat conducting structure (23).

9. The method for maintaining fire of a gas stove according to claim 8, characterized in that: The heat collection component (2) is an annular structure made of a heat collection sheet (20), and the heat collection inner cavity (21) is formed inside the heat collection sheet (20).

10. A gas stove, characterized in that: A method for maintaining fire in a gas stove according to any one of claims 1 to 9 is used to maintain fire, the gas stove comprising a stove burner, the stove burner comprising an inner ring fire cover (1), the inner ring fire cover (1) being provided with a fire maintenance hole (11), a heat collection component (2) being provided on one side of the fire maintenance hole (11), the heat collection component (2) being connected to the fire maintenance hole (11), a thermocouple (3) located on one side of the inner ring fire cover (1) extending into the heat collection component (2) and in contact with the heat collection component (2); The stove burner is connected to the gas inlet (9) of the gas stove via a pipeline, and a flow regulating valve (13) is provided on the pipeline. The flow regulating valve (13) is used to adjust the flow of gas entering the stove burner.

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