Fire-keeping method of gas stove and gas stove

Abstract

The present application relates to the technical field of cooking utensils, and discloses a fire-keeping method of a gas stove and the gas stove. The cooking utensil burner of the gas stove comprises an inner ring fire cover, the inner ring fire cover is provided with a fire-keeping hole, one side of the fire-keeping hole is provided with a heat collecting assembly, the heat collecting assembly is in communication with the fire-keeping hole, and a thermocouple located at one side of the inner ring fire cover extends into the heat collecting assembly and is in contact with the heat collecting assembly. The cooking utensil burner is connected with a 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: the gas stove is started, and after the cooking utensil burner is successfully ignited, the gas stove enters a fire-keeping stage; the working temperature of the thermocouple is detected, and the degree of blockage of the fire-keeping hole is judged according to the working temperature of the thermocouple; the opening degree of the flow regulating valve is adjusted according to the degree of blockage of the fire-keeping hole, so that the fire power is adjusted, thereby high-temperature roasting of the blockage in the fire-keeping hole is performed to carbonize the blockage, thereby solving the problem of blockage of the fire-keeping hole, and the heat collecting assembly conducts heat to the thermocouple, so as to ensure successful fire keeping.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cooking utensils, in particular to a fire maintaining method of a gas stove and the gas stove. BACKGROUND

[0002] The ignition needle and thermocouple of the cooking utensil burner are extremely important, and are related to the ignition and fire maintaining performance of the cooking utensil burner. The ignition needle and thermocouple of most existing cooking utensil burners are arranged at two opposite sides of the outer periphery of the inner ring fire cover, and are arranged far apart, which causes poor anti-interference ability of the ignition needle and thermocouple, low anti-blocking performance, and poor fire maintaining performance of the fire maintaining hole. Therefore, there is an urgent need to design a fire maintaining method of a gas stove to avoid poor fire maintaining performance caused by blockage of the fire maintaining hole. SUMMARY

[0003] The present application aims to provide a fire maintaining method of a gas stove and the gas stove, which solves the technical problem of poor fire maintaining performance caused by blockage of the fire maintaining hole in the prior art.

[0004] To achieve the above purpose, the present application adopts the following technical solutions:

[0005] The present application provides a fire maintaining method of a gas stove. The cooking utensil burner of the gas stove comprises an inner ring fire cover, the inner ring fire cover is provided with a fire maintaining hole, a heat collecting assembly is arranged at one side of the fire maintaining hole, the heat collecting assembly is in communication with the fire maintaining hole, a thermocouple arranged at one side of the inner ring fire cover extends into the heat collecting assembly and is in contact with the heat collecting assembly, the cooking utensil burner is connected with a 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 cooking utensil burner enters a fire maintaining stage after successful ignition.

[0007] The working temperature of the thermocouple is detected, and the blockage degree of the fire maintaining hole is determined according to the working temperature of the thermocouple.

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

[0009] The cooking utensil burner determines the blockage degree of the fire maintaining hole according to the working temperature of the thermocouple, and adjusts the opening degree of the flow regulating valve to adjust the fire power, so as to carbonize the blockage of the protection hole by high-temperature roasting, thereby solving the problem of blockage of the fire maintaining hole. In this process, the heat collecting assembly conducts heat to the thermocouple, so that the thermocouple can reach the valve suction temperature to achieve successful fire maintaining.

[0010] As a preferred solution of the fire maintaining method of the gas stove, the working temperature of the thermocouple is detected after a preset time t0 of successful ignition of the cooking utensil burner.

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

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

[0013] The blocking state of the fire hole is determined according to the working temperature and the duration of the thermocouple, which is simple and easy to obtain.

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

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

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

[0017] As a preferred solution of the fire protection method of the gas stove, the working temperature of the thermocouple is detected after the preset time t0 of the successful ignition of the gas stove burner;

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

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

[0020] If the above conditions are met, i.e. the fire protection is successful, the gas stove is normally operated until it is turned off.

[0021] As a preferred solution of the fire protection method of the gas stove, during the fire protection stage, after adjusting the flow regulating valve, the working temperature T of the thermocouple is continuously detected and determined whether it satisfies T ≥ T2 and the duration exceeds t3, if so, the opening of the flow regulating valve is adjusted to restore the fire to a small fire state, and the gas stove is operated until it is turned off.

[0022] If the working temperature T of the thermocouple is greater than or equal to T2 and the duration does not exceed t3, the flow regulating valve is adjusted to keep the fire in a large fire state until the working temperature T of the thermocouple is greater than or equal to T2 and the duration exceeds t3, and then adjusted to a small fire state to make the gas stove work until it is turned off.

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

[0024] As a preferred solution of the above-mentioned fire maintaining method of the gas stove, the fire maintaining method of the gas stove further comprises an ignition stage: the burner is started, the opening degree of the flow regulating valve is adjusted to make the fire power in a normal small fire state, and the stove burner is ignited;

[0025] It is judged whether the ignition is successful or not;

[0026] If yes, the fire maintaining stage is entered;

[0027] If no, the opening degree of the flow regulating valve is adjusted to adjust the fire power to a large fire state, and the fire maintaining stage is entered after the ignition is successful.

[0028] In the ignition stage, the ignition is performed by small fire, and if the ignition is successful, the fire maintaining stage is entered; if not, the opening degree of the flow regulating valve is adjusted to adjust the fire power to a large fire state, so as to realize the success of the ignition.

[0029] As a preferred solution of the above-mentioned fire maintaining method of the gas stove, if the ignition fails after the fire power is adjusted to a large fire state in the ignition stage, the gas stove alarms the user.

[0030] If the ignition fails after the fire power is adjusted in the ignition stage, the gas stove alarms the user in time to remind the user of the ignition failure.

[0031] As a preferred solution of the above-mentioned fire maintaining method of the gas stove, the heat collecting assembly is provided with a heat collecting inner cavity, the side wall of the heat collecting assembly is provided with an out-fire hole in communication with the heat collecting inner cavity, the out-fire hole is in communication with the fire maintaining hole, the heat collecting inner cavity is provided with a heat conducting structure, and the thermocouple extends into the heat collecting inner cavity and contacts the heat conducting structure.

[0032] The heat collecting inner cavity is provided with a heat conducting structure, the thermocouple on one side of the inner ring fire cover extends into the heat collecting inner cavity and contacts the heat conducting structure, the fire of the fire maintaining hole heats the thermocouple through the out-fire hole when the gas stove works normally, and the ignition is ensured to be successful; when the fire maintaining hole is blocked, the heat collecting assembly is heated, and the thermocouple is heated by the heat conducting structure.

[0033] As a preferred solution of the above-mentioned fire maintaining method of the gas stove, the heat collecting assembly is an annular structure made of heat collecting sheets, and the heat collecting sheets form the heat collecting inner cavity.

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

[0035] The application also provides a gas stove which adopts the fire maintaining method of the gas stove to maintain fire, and the gas stove comprises a burner, and the burner comprises an inner ring fire cover, a heat collecting component is arranged on one side of the inner ring fire cover, the heat collecting component is in communication with the fire maintaining hole, and a thermocouple on one side of the inner ring fire cover extends into the heat collecting component and is in contact with the heat collecting component.

[0036] The burner is connected with a 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 for adjusting the flow of the gas entering the burner.

[0037] The gas stove is used for heat conduction to the thermocouple by arranging the heat collecting component on one side of the fire maintaining hole, the flow of the gas entering the burner is adjusted by the flow regulating valve, when the fire maintaining hole is blocked, the opening degree of the flow regulating valve is controlled to increase the fire power, so that the thermocouple can reach the valve temperature, and the blocking material of the fire maintaining hole can be carbonized by high-temperature roasting, thereby solving the problem of the blocking of the fire maintaining hole.

[0038] The application has the following beneficial effects:

[0039] The fire maintaining method of the gas stove can judge the blocking degree of the fire maintaining hole according to the working temperature of the thermocouple, and adjust the fire power by adjusting the opening degree of the flow regulating valve, so that the blocking material of the fire maintaining hole can be carbonized by high-temperature roasting, thereby solving the problem of the blocking of the fire maintaining hole, and in the process, the heat collecting component conducts heat to the thermocouple, so that the thermocouple can reach the valve temperature to realize successful fire maintaining.

[0040] The gas stove is used for heat conduction to the thermocouple by arranging the heat collecting component on one side of the fire maintaining hole, the flow of the gas entering the burner is adjusted by the flow regulating valve, when the fire maintaining hole is blocked, the opening degree of the flow regulating valve is controlled to increase the fire power, so that the thermocouple can reach the valve temperature, and the blocking material of the fire maintaining hole can be carbonized by high-temperature roasting, thereby solving the problem of the blocking of the fire maintaining hole. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 is a structural schematic view of the gas stove provided by the application;

[0042] Figure 2 is a structural schematic view of the burner provided by the application;

[0043] Figure 3 is a sectional view of the burner provided by the application;

[0044] Figure 4 is Figure 3An enlarged schematic view at A in the figure;

[0045] Figure 5 is a structural schematic view of the inner ring fire cover provided by the present application;

[0046] Figure 6 is a structural schematic view of the heat collecting assembly provided by the present application;

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

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

[0049] In the figure:

[0050] 1, inner ring fire cover; 10, inner gas mixing cavity; 11, fire maintaining hole;

[0051] 2, heat collecting assembly; 20, heat collecting sheet; 21, heat collecting inner cavity; 22, fire outlet hole; 23, heat conducting structure; 24, shielding plate;

[0052] 3, thermocouple; 4, outer ring fire cover; 5, electrode needle; 6, burner; 7, nozzle seat; 8, control center; 9, gas inlet; 13, flow regulating valve; 14, on-off valve. DETAILED DESCRIPTION

[0053] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the convenience of description, only the parts related to the present application are shown in the drawings, but not all the structures.

[0054] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood in a broad sense, for example, it can be fixedly connected, or detachably connected, or integrated; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0055] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0056] In the description of the present embodiment, the terms "upper", "lower", "right", "left", and other orientation or position relationships are based on the orientation or position relationships shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in description and have no special meaning.

[0057] As shown in Figures 1-6 The present embodiment provides a gas stove, which comprises a stove burner, the stove burner is installed on a bottom plate through a nozzle seat 7, the stove burner is connected with a gas inlet 9 through a pipeline (see Figure 3 ), a flow regulating valve 13 is arranged on the pipeline, and the flow regulating valve 13 is used to adjust the flow size of the gas entering the stove burner.

[0058] Specifically, the stove burner comprises 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 position of the outer ring fire cover 4, an inner gas mixing cavity 10 is arranged on the inner ring fire cover 1, and a fire retaining hole 11 in communication with the inner gas mixing cavity 10 is arranged on the side wall of the inner ring fire cover 1. An electrode needle 5 and a heat collecting assembly 2 are arranged on one side of the inner ring fire cover 1, the electrode needle 5 is used for ignition, the heat collecting assembly 2 is arranged on one side of the inner ring fire cover 1, a heat collecting inner cavity 21 is arranged on the heat collecting assembly 2, a fire outlet hole 22 in communication with the heat collecting inner cavity 21 is arranged on the side wall of the heat collecting assembly 2, the fire outlet hole 22 is in communication with the fire retaining hole 11, a heat conducting structure 23 is arranged in the heat collecting inner cavity 21, and a thermocouple 3 located on one side of the inner ring fire cover 1 extends into the heat collecting inner cavity 21 and is in contact with the heat conducting structure 23.

[0059] The present embodiment also provides a fire retaining method of a gas stove, which is applied to the above-mentioned gas stove, as shown in Figure 7 The fire retaining method of the gas stove comprises the following steps:

[0060] The gas stove is started, and after the stove burner is successfully ignited, the stove burner enters a fire retaining stage;

[0061] The operating temperature of thermocouple 3 is detected, and the degree of blockage of the flame-protection hole 11 is determined based on the operating temperature of thermocouple 3.

[0062] Adjust the opening of the flow regulating valve 13 according to the degree of blockage of the fireproof hole 11 to regulate the firepower.

[0063] When the gas stove is working normally, the flame from the flame-keeping hole 11 heats the thermocouple 3 through the flame outlet hole 22 to ensure successful ignition. When the flame-keeping hole 11 is blocked, the degree of blockage is determined by detecting the working temperature of the thermocouple 3. The opening of the flow regulating valve 13 is adjusted according to the degree of blockage to regulate the flame, thereby heating the blockage in the flame-keeping hole 11 to carbonization, thus solving the problem of blockage. During this process, the heat collection component 2 is used to conduct heat to the thermocouple 3 to ensure that the thermocouple 3 reaches the suction valve temperature and ensures successful flame retention.

[0064] Optionally, both the flow regulating valve 13 and the thermocouple 3 are connected to the control center 8. When the flame protection hole 11 is blocked, the control center 8 monitors the working temperature of the thermocouple 3 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 also installed on the pipeline to control the on / off of the pipeline, so as to flexibly control it according to the needs.

[0066] In this embodiment, the heat collection component 2 is an annular structure made of heat collection plate 20, and a heat collection cavity 21 is formed inside the heat collection plate 20. The heat collection component 2 is an annular structure made of heat collection plate 20. This structure is simple, easy to manufacture, and makes it easy to heat the thermocouple 3 that extends into the heat collection cavity 21.

[0067] Furthermore, such as Figure 5 As shown, the top of the heat collection plate 20 is bent to form a baffle plate 24, which covers the outside of the fireproof hole 11. The baffle plate 24 is provided to prevent foreign objects from falling and blocking the fireproof hole 11.

[0068] In this embodiment, the heat-conducting structure 23 is connected to the heat-collecting plate 20 and disposed immediately below the flame outlet 22. The connection between the heat-conducting structure 23 and the heat-collecting plate 20 forms a single integrated structure, enabling heat transfer. The placement of the heat-conducting structure 23 immediately below the flame outlet 22 prevents blockage of the flame outlet 22, thus avoiding impact on flame preservation, and also facilitates the transfer of heat to the thermocouple 3.

[0069] In this embodiment, the heat-conducting structure 23 is a ring 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 ring structure of the heat-conducting structure 23 can conduct heat to the thermocouple 3 uniformly, thereby improving the heat conduction uniformity.

[0070] In other embodiments, the heat-conducting structure 23 comprises a plurality of heat-conducting blocks arranged along the circumference of the heat-collecting inner cavity 21, and the side of the heat-conducting blocks facing the heat-collecting inner cavity 21 is attached to the thermocouple 3. The heat-collecting inner cavity 21 is provided with a plurality of heat-conducting blocks along the circumferential direction, which can uniformly conduct heat to the thermocouple 3, and the heat-conducting blocks are simple in structure and easy to manufacture.

[0071] Optionally, a plurality of fire outlet holes 22 are arranged on the side wall of the heat-collecting assembly 2, which can improve the efficiency of fire maintaining. In the embodiment, the plurality of fire outlet holes 22 are arranged transversely and longitudinally along the side wall of the heat-collecting assembly 2, which is more beautiful in appearance. The peripheral surface of the inner ring fire cover 1 is provided with a plurality of fire maintaining holes 11. The arrangement of the plurality of fire maintaining holes 11 improves the fire outlet efficiency.

[0072] The stove burner realizes local heat collection by increasing the heat-collecting assembly 2. When the gas stove is working normally, the fire of the fire maintaining hole 11 heats the thermocouple 3 through the fire outlet hole 22, ensuring successful ignition. When the fire maintaining hole 11 is partially blocked, the working temperature of the thermocouple 3 is monitored to control the opening degree of the flow regulating valve 13, so as to increase the fire power and ensure that the thermocouple 3 can reach the valve temperature. When the fire maintaining hole 11 is completely blocked, the heat-collecting sheet 20 is heated, and the heat is conducted to the thermocouple 3 through the heat-conducting structure 23 to control the opening degree of the flow regulating valve 13, so as to increase the fire power and realize the valve absorption of the thermocouple 3.

[0073] Specifically, as shown in Figure 8 the fire maintaining method of the gas stove comprises the following steps:

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

[0075] It is judged whether the ignition is successful or not;

[0076] If yes, the fire maintaining stage is entered;

[0077] If no, the opening degree of the flow regulating valve 13 is adjusted to adjust the fire power to a large fire state, and the fire maintaining stage is entered after successful ignition.

[0078] In the ignition stage, the ignition is carried out by small fire, and if the ignition is successful, the fire maintaining stage is entered; if not, the fire power is adjusted to a large fire state by adjusting the opening degree of the flow regulating valve 13, so as to realize successful ignition. It should be noted that the method of judging whether the ignition is successful or not belongs to the prior art, which will not be described here.

[0079] If the ignition still fails after the fire power is adjusted to the large fire state in the ignition stage, the gas stove alarms the user to remind the user of the ignition failure. The alarm prompt can be a voice alarm or a light flashing alarm. The specific alarm prompt can be set according to the requirements.

[0080] After the preset time t0 of the successful ignition of the stove burner, 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 hole 11 is in a semi-blocking 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 works 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 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 works normally until it is turned off.

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

[0084] When the fire hole 11 is in a semi-blocking state, the opening of the flow regulating valve 13 is adjusted to adjust the fire power to the medium fire state. When the fire hole 11 is in a fully blocked state, the opening of the flow regulating valve 13 is adjusted to adjust the fire power to the large fire state, so that the intensity of the fire power can be adjusted according to the blocking state of the fire hole 11, thereby realizing successful fire preservation.

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

[0086] In the fire preservation stage, after adjusting the flow regulating valve 13, the working temperature T of the thermocouple 3 is continuously detected and judged. If T ≥ T2 and the duration exceeds t3, the opening of the flow regulating valve 13 is adjusted to restore the fire power to the small fire state, and the gas stove works until it is turned off. If the working temperature T of the thermocouple 3 is T ≥ T2 and the duration does not exceed t3, the opening of the flow regulating valve 13 is adjusted to keep the fire power in the large fire state until the working temperature T of the thermocouple is T ≥ T2 and the duration exceeds t3, and then the gas stove is adjusted to the small fire state to work until it is turned off. The above setting is to make the stove burner maintain the stability of the combustion condition.

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

[0088] Obviously, the above embodiments of the present application are merely examples for the purpose of clear illustration, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of the present application. It is unnecessary and impossible to enumerate all the embodiments here. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A method of maintaining a gas flame of a gas burner, characterized in that The burner of the gas stove comprises an inner ring fire cover (1) provided with a fire hole (11), a heat collecting assembly (2) arranged on one side of the fire hole (11), the heat collecting assembly (2) being in communication with the fire hole (11), and a thermocouple (3) arranged on one side of the inner ring fire cover (1) and extending into the heat collecting assembly (2) and being in contact with the heat collecting assembly (2); the burner is connected with a gas inlet (9) of the gas stove through a pipeline, and a flow regulating valve (13) is arranged on the pipeline. The gas stove is started, and the burner is ignited successfully to enter a fire maintaining stage. After a preset time t0 of the ignition of the burner, the working temperature of the thermocouple (3) is detected; if the working temperature T of the thermocouple (3) satisfies T1<T<T2 and the duration is greater than t1, it is determined that the fire hole (11) is in a semi-blocking state; if the working temperature T of the thermocouple (3) satisfies T≤T1 and the duration is greater than t2, it is determined that the fire hole (11) is in a full-blocking state. When the fire hole (11) is in the semi-blocking state, the opening of the flow regulating valve (13) is adjusted to adjust the fire to a medium fire state; when the fire hole (11) is in the full-blocking state, the opening of the flow regulating valve (13) is adjusted to adjust the fire to a large fire state.

2. The method of claim 1, wherein the gas stove is a gas stove for cooking. After a preset time t0 of the ignition of the burner, the working temperature of the thermocouple (3) is detected. 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 is normally operated 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 is normally operated until it is turned off.

3. The method of claim 1, wherein the gas stove is a gas stove for cooking. In the fire maintaining stage, after the flow regulating valve (13) is adjusted, the working temperature T of the thermocouple (3) is continuously detected and judged; if T≥T2 and the duration exceeds t3, the opening of the flow regulating valve (13) is adjusted to restore the fire to a small fire state, and the gas stove is operated until it is turned off. If the working temperature T of the thermocouple (3) is T≥T2 and the duration does not exceed t3, the opening of the flow regulating valve (13) is adjusted to keep the fire in a large fire state until the working temperature T of the thermocouple (3) is T≥T2 and the duration exceeds t3, and then the fire is adjusted to a small fire state to make the gas stove work until it is turned off.

4. The method of claim 1, wherein the gas stove is a gas stove for cooking. The fire maintaining method of the gas stove further comprises an ignition stage: the gas stove is started, the opening of the flow regulating valve (13) is adjusted to make the fire in a normal small fire state, and the burner is ignited; It is judged whether the ignition is successful; If yes, the fire maintaining stage is entered; If no, the opening of the flow regulating valve (13) is adjusted to adjust the fire to a large fire state, and the fire maintaining stage is entered after the ignition is successful.

5. The method of claim 4, wherein the gas burner is ignited by a spark. If the fire is adjusted to a large fire state in the ignition stage and the ignition still fails, the gas stove gives an alarm to the user.

6. The method of claim 1, wherein the gas burner is a gas stove. The heat collecting assembly (2) is provided with a heat collecting cavity (21), the sidewall of the heat collecting assembly (2) is provided with an outlet hole (22) communicated with the heat collecting cavity (21), the outlet hole (22) is communicated with the fire retaining hole (11), the heat collecting cavity (21) is provided with a heat conducting structure (23), and the thermocouple (3) extends into the heat collecting cavity (21) and is in contact with the heat conducting structure (23).

7. The method of claim 6, wherein the gas burner is ignited by a spark. The heat collecting assembly (2) is an annular structure made of heat collecting sheets (20), and the heat collecting sheets (20) form the heat collecting cavity (21) inside.

8. Gas hob, characterized in that The fire retaining method of the gas stove is used to retain fire, the gas stove comprises a burner, the burner comprises an inner ring fire cover (1), the inner ring fire cover (1) is provided with a fire retaining hole (11), one side of the fire retaining hole (11) is provided with a heat collecting assembly (2), the heat collecting assembly (2) is communicated with the fire retaining hole (11), and a thermocouple (3) located at one side of the inner ring fire cover (1) extends into the heat collecting assembly (2) and is in contact with the heat collecting assembly (2); The burner is connected with a gas inlet (9) of the gas stove through a pipeline, a flow regulating valve (13) is arranged on the pipeline, the flow regulating valve (13) and the thermocouple (3) are connected with a control center (8), when the fire retaining hole (11) is blocked, the working temperature of the thermocouple (3) is monitored through the control center (8), the opening and closing degree of the flow regulating valve (13) is controlled, and the flow of the gas entering the burner is adjusted.

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