Gas stove firepower control device and control method thereof

Abstract

The present invention discloses a gas stove fire control device and a control method thereof. The gas stove fire control device is arranged on the lower side of the fire hole of the gas stove fire grate, and includes a toggle structure, including at least two first blades, with adjacent first blades forming the same angle; a follower assembly, including multiple follower structures coaxially arranged with the toggle structure, with adjacent follower structures being contactably connected to each other, and a follower structure adjacent to the toggle structure being contactably connected to the toggle structure, the follower structure including at least two second blades, with adjacent second blades forming the same angle, and the number of second blades of a follower structure being the same as the number of first blades; and a driving structure, in transmission connection with the toggle structure, capable of driving the toggle structure to rotate in a first direction, thereby deploying the first blades, or simultaneously driving the follower assembly to rotate in the first direction, thereby deploying the second blades of the follower structure.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to a gas stove firepower control device and a control method thereof. Background Art

[0002] When using a gas stove for cooking, heat control is crucial. The existing gas stove heat control has the following problems:

[0003] 1. The gas firepower adjustment gear is limited: the gear firepower is nonlinearly distributed, and the span between two adjacent gears is inconsistent, some are too large, and some are too small;

[0004] Second, the low fire is not low enough: the minimum fire power of most gas stoves on the market is 400-800W, and some companies can reach 200W, but it is still not enough to meet cooking needs, and is not suitable for stewing and melting functions;

[0005] Therefore, a gas stove fire control device is urgently needed to solve the above problems. Summary of the Invention

[0006] The present invention aims to solve at least one of the problems existing in the existing related technologies to a certain extent. To this end, the present invention proposes a gas stove fire control device that can adjust the firepower to a smaller level and can adjust the firepower more accurately and evenly.

[0007] The above purpose is achieved through the following technical solutions:

[0008] A gas stove fire control device is arranged on the lower side of the fire hole of the fire grate of the gas stove, and the fire control device includes:

[0009] The toggle structure includes at least two first blades, and two adjacent first blades form the same angle between them;

[0010] A follower assembly includes a plurality of follower structures coaxially arranged with the toggle structure, wherein two adjacent follower structures can be contacted and connected, and a follower structure close to the toggle structure can be contacted and connected with the toggle structure, wherein the follower structure includes at least two second blades, wherein two adjacent second blades form the same angle, and the number of the second blades of a follower structure is the same as the number of the first blades;

[0011] The driving structure is in transmission connection with the toggle structure, and the driving structure can drive the toggle structure to rotate in a first direction to expand the first fan blades, or simultaneously drive the follower assembly to rotate in the first direction to expand the second fan blades of the follower structure, or drive the toggle structure to rotate in a second direction to fold the first fan blades, or simultaneously drive the follower assembly to rotate in the second direction to fold the second fan blades of the follower structure, and the first direction and the second direction are opposite.

[0012] Optionally, a first toggle block and a second toggle block are provided on the first fan blade, and a third toggle block and a fourth toggle block are provided on the second fan blade. When the driving structure drives the toggle structure to rotate along the first direction, the second toggle block can act on the third toggle block of the follower structure adjacent to the toggle structure, thereby unfolding the second fan blade of the follower structure, and the fourth toggle block of one of the two adjacent follower structures can act on the third toggle block of the other follower structure, thereby unfolding part or all of the second fan blades of the follower structure; when the driving structure drives the toggle structure to rotate along the second direction, the first toggle block can act on the second fan blade, thereby folding part or all of the second fan blades.

[0013] Optionally, the follower assembly is located on the lower side of the toggle structure, the first toggle block is arranged on the side of the first fan blade facing the first direction and extending downward, the second toggle block is arranged on the side of the first fan blade facing the second direction and extending downward, the third toggle block is arranged on the side of the second fan blade facing the first direction and extending upward, and the fourth toggle block is arranged on the side of the second fan blade facing the second direction and extending downward.

[0014] Optionally, the toggle structure and the follower structure are integrally formed.

[0015] Optionally, the toggle structure has four first blades, and the follower structure has four second blades. When the first blades and the second blades are fully unfolded, the first blades and the second blades form a circle.

[0016] Optionally, the driving structure is a stepping motor, and the output shaft of the stepping motor is connected to a transmission hole arranged in the center of the toggle structure.

[0017] Optionally, a shaft hole is provided in the middle of each of the plurality of follower structures, and a rotating shaft is passed through the shaft hole.

[0018] Another aspect of the present invention provides a method for controlling the gas stove fire control device as described above, comprising the following steps:

[0019] S1: The gas stove is started, the cooking temperature parameters are called according to the cooking recipe, and the gas stove runs at the preset fire level;

[0020] S2: Determine whether T0-Ti>Tc. If so, proceed to S3; if not, proceed to S5.

[0021] S3: Determine whether Vi≤V1. If so, proceed to S4. If not, reduce the gas stove's power by one level and return to S2.

[0022] S4: Determine whether Vi≥V2. If so, return to S2. If not, increase the firepower of the gas stove by one level and reduce the area of ​​the fire hole through the firepower control device.

[0023] S5: The gas stove is operated at the lowest gear fire power, and the fire hole area is opened to the maximum through the fire power control device for a preset time t;

[0024] S6: determining whether to adjust the fire power level according to the difference between Ti and T0, or adjusting the fire hole area through the fire power control device until cooking is completed;

[0025] Where Ti is the real-time cooking temperature, T0 is the target cooking temperature, Tc is the temperature compensation value, Vi is the relative heating rate, Vi=(Ci-C0) / C0, Ci is the real-time heating rate, C0 is the target heating rate, and V1>V2.

[0026] Optionally, the S6 specifically includes the following steps:

[0027] S61: Determine whether Ti-T0<T1. If so, reduce the area of ​​the fire hole opened by the fire control device and repeat S61. If not, proceed to S62.

[0028] S62: Determine whether Ti-T0>T2. If so, increase the gas stove's power by one level and return to S61. If not, proceed to S63.

[0029] S63: Determine whether ti=t0, if yes, cooking is finished, if not, return to S61;

[0030] Among them, ti is the actual constant temperature cooking time, t0 is the target constant temperature cooking time, T1>T2.

[0031] Optionally, the S6 specifically includes the following steps:

[0032] S61: Determine whether Ti-T0 < T1. If so, increase the firepower of the gas stove by one level and repeat S61. If not, proceed to S62.

[0033] S62: Determine whether Ti-T0>T2. If so, reduce the area of ​​the fire hole opened by the fire control device and return to S61. If not, enter S63.

[0034] S63: Determine whether ti=t0, if yes, cooking is finished, if not, return to S61;

[0035] Among them, ti is the actual constant temperature cooking time, t0 is the target constant temperature cooking time, T1>T2.

[0036] Optionally, Tc is 10°C to 30°C, V1 is -3% to -8%, V2 is 3% to 8%, T1 is -3°C to -5°C, and T2 is 3°C to 5°C.

[0037] Compared with the prior art, the present invention has at least the following beneficial effects:

[0038] The gas stove fire control device provided by the present invention is disposed on the underside of the fire hole of the gas stove's fire grate. The fire control device comprises a toggle structure, a follower assembly, and a drive structure. The toggle structure comprises at least two first blades, with adjacent first blades forming the same angle with each other. The follower assembly comprises a plurality of follower structures coaxially arranged with the toggle structure, with adjacent follower structures being contactably connected to each other. A follower structure proximal to the toggle structure is contactably connected to the toggle structure. The follower structure comprises at least two second blades, with adjacent second blades forming the same angle with each other. The number of second blades in a follower structure is the same as the number of first blades. The driving structure is connected to the toggle structure in a transmission manner. The driving structure can drive the toggle structure to rotate in a first direction to expand the first fan blade, or simultaneously drive the follower component to rotate in the first direction to expand the second fan blade of the follower structure, or drive the toggle structure to rotate in the second direction to fold the first fan blade, or simultaneously drive the follower component to rotate in the second direction to fold the second fan blade of the follower structure. The first direction and the second direction are opposite. In this way, the folding size of the fire control device can be automatically achieved through the driving structure, thereby adjusting the area of ​​the blocked fire hole, and finally achieving the adjustment of the combustion firepower. Compared with the technology of only using gears to adjust the firepower in the existing technology, it can achieve the adjustment of smaller firepower and can adjust the firepower more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a top view schematic diagram of a gas stove fire control device provided by a specific embodiment of the present invention, which is arranged on the lower side of the fire hole of the fire grate of the gas stove;

[0040] Figure 2 This is a schematic front view of a gas stove fire control device provided by a specific embodiment of the present invention, which is arranged on the lower side of the fire hole of the fire grate of the gas stove;

[0041] Figure 3is a schematic diagram of the three-dimensional structure of a gas stove fire control device provided by a specific embodiment of the present invention (the driving structure is not shown);

[0042] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0043] Figure 5 yes Figure 3 's diagram;

[0044] Figure 6 yes Figure 3 Exploded view of the actuator (explosion between the actuator and follower components);

[0045] Figure 7 yes Figure 3 Exploded diagram (decomposition between the toggle structure and the follower structure);

[0046] Figure 8 It is a schematic diagram of a first fan blade of a toggle structure of a gas stove fire control device provided by a specific embodiment of the present invention being retracted onto a second fan blade of a follower structure;

[0047] Figure 9 This is a step diagram of a control method for a gas stove fire control device provided in a first embodiment of the present invention;

[0048] Figure 10 This is a step diagram of a control method for a gas stove fire control device provided in a second specific embodiment of the present invention.

[0049] In the picture:

[0050] 1. Fire grille; 10. Fire hole;

[0051] 2. Toggle structure; 21. First fan blade; 210. Transmission hole; 211. First toggle block; 212. Second toggle block;

[0052] 30. Follower assembly; 3. Follower structure; 31. Second fan blade; 310. Shaft hole; 311. Third toggle block; 312. Fourth toggle block;

[0053] 100. Fire control device. DETAILED DESCRIPTION

[0054] The following examples illustrate the present invention, but the present invention is not limited to these examples. Modifications to the specific embodiments of the present invention or equivalent replacements of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed in the present invention.

[0055] Please refer to Figures 1-8The present invention provides a gas stove fire control device 100, which is arranged on the lower side of the fire hole 10 of the fire grate 1 of the gas stove. The fire control device 100 includes a toggle structure 2, a follower assembly 30 and a driving structure. The toggle structure 2 includes at least two first blades 21, and the two adjacent first blades 21 form an angle of the same angle. The follower assembly 30 includes a plurality of follower structures 3 coaxially arranged with the toggle structure 2, and the two adjacent follower structures 3 can be contacted and connected. A follower structure 3 close to the toggle structure 2 can be contacted and connected with the toggle structure 2, and the follower structure 3 includes at least two second blades 31, and the two adjacent second blades 31 form an angle of the same angle. The number of the second blades 31 of a follower structure 3 is the same as the number of the first blades 21. The driving structure is transmission-connected to the toggle structure 2, and the driving structure can drive the toggle structure 2 along a first direction ( Figure 8 The first blade 21 is unfolded, or the follower assembly 30 is driven to rotate in the first direction to unfold the second blade 31 of the follower structure 3, or the toggle structure 2 is driven to rotate in the second direction ( Figure 8 The first fan blade 21 is folded or the second fan blade 31 of the follower structure 3 is folded. The first direction and the second direction are opposite. In this way, the folding size of the fire control device 100 can be automatically achieved through the driving structure, thereby adjusting the area of ​​the blocked fire hole 10, and finally achieving the adjustment of the combustion firepower. Compared with the technology of only using gears to adjust the firepower in the prior art, it can achieve the adjustment of smaller firepower and can adjust the firepower more accurately.

[0056] Optionally, a first toggle block 211 and a second toggle block 212 are provided on the first fan blade 21, and a third toggle block 311 and a fourth toggle block 312 are provided on the second fan blade 31. When the driving structure drives the toggle structure 2 to rotate in the first direction, the second toggle block 212 can act on the third toggle block 311 of a follower structure 3 adjacent to the toggle structure 2, thereby unfolding the second fan blade 31 of the follower structure 3. The fourth toggle block 312 of one of the two adjacent follower structures 3 can act on the third toggle block 311 of the other follower structure 3, thereby unfolding part or all of the second fan blade 31 of the follower structure 3; when the driving structure drives the toggle structure 2 to rotate in the second direction, the first toggle block 211 can act on the second fan blade 31, thereby retracting part or all of the second fan blade 31.

[0057] Optionally, the follower assembly 30 is located on the lower side of the toggle structure 2, the first toggle block 211 is arranged on the side of the first fan blade 21 facing the first direction and extending downward, the second toggle block 212 is arranged on the side of the first fan blade 21 facing the second direction and extending downward, the third toggle block 311 is arranged on the side of the second fan blade 31 facing the first direction and extending upward, and the fourth toggle block 312 is arranged on the side of the second fan blade 31 facing the second direction and extending downward.

[0058] Optionally, the toggle structure 2 and the follower structure 3 are integrally formed to ensure the stability of the toggle structure 2 and the follower structure 3 .

[0059] Optionally, the toggle structure 2 has four first blades 21, and the follower structure 3 has four second blades 31. When the first blades 21 and the second blades 31 are fully unfolded, the first blades 21 and the second blades 31 are enclosed to form a circle.

[0060] Optionally, the toggle structure 2 and the follower structure 3 are both made of cast iron, which can achieve uniform heat conduction and thus solve the problem of uneven firepower in the prior art.

[0061] Optionally, the driving structure is a stepping motor, and the output shaft of the stepping motor is connected to the transmission hole 210 provided in the center of the toggle structure 2 .

[0062] Optionally, a shaft hole 310 is provided in the middle of each of the plurality of follower structures 3 , and a rotating shaft is passed through the shaft hole 310 to facilitate the rotation of the follower structure 3 .

[0063] Please refer to Figure 9 and Figure 10 On the other hand, the present invention provides a method for controlling the gas stove fire control device 100 as described above, comprising the following steps:

[0064] S1: The gas stove is started, the cooking temperature parameters are called according to the cooking recipe, and the gas stove runs at the preset fire level;

[0065] S2: Determine whether T0-Ti>Tc. If so, proceed to S3; if not, proceed to S5.

[0066] S3: Determine whether Vi≤V1. If so, proceed to S4. If not, reduce the gas stove's power by one level and return to S2.

[0067] S4: Determine whether Vi ≥ V2. If so, return to S2. If not, increase the firepower of the gas stove by one level and reduce the area of ​​the fire hole 10 opened by the firepower control device 100 (for example, adjust the area of ​​the fire hole 10 opened to 50%).

[0068] S5: The gas stove is operated at the lowest gear fire power, and the fire hole 10 is opened to the maximum area through the fire power control device 100 for a preset time t;

[0069] S6: Determine whether to adjust the fire power level according to the difference between Ti and T0, or adjust the open area of ​​the fire hole 10 through the fire power control device 100 until cooking is completed;

[0070] Where Ti is the real-time cooking temperature, T0 is the target cooking temperature, Tc is the temperature compensation value, Vi is the relative heating rate, Vi=(Ci-C0) / C0, Ci is the real-time heating rate, C0 is the target heating rate, and V1>V2.

[0071] For example 1, please refer to Figure 9 , S6 specifically includes the following steps:

[0072] S61: Determine whether Ti-T0 < T1. If so, reduce the area of ​​the fire hole 10 opened by the fire control device 100 and repeat S61. If not, proceed to S62.

[0073] S62: Determine whether Ti-T0>T2. If so, increase the gas stove's power by one level and return to S61. If not, proceed to S63.

[0074] S63: Determine whether ti=t0, if yes, cooking is finished, if not, return to S61;

[0075] Among them, ti is the actual constant temperature cooking time, t0 is the target constant temperature cooking time, T1>T2.

[0076] Specifically, if the desired gear is the middle power of the minimum gear when entering the constant temperature cooking stage, the specific steps of S6 of the above-mentioned embodiment 1 are applied to quickly adjust to the required minimum cooking power. For example, the steps for frying 100g of French fries are as follows: calling the French fry cooking program, obtaining cooking parameters, the target cooking temperature is 180°C, the heating rate in the heating stage is 0.76°C / s, and the constant temperature cooking time is 3 minutes. Ignite the burner, detect the current real-time cooking temperature and find it is 25°C, the temperature compensation value is 25°C, and the real-time cooking temperature is less than 155°C, then enter the heating stage power adjustment step. Starting with the preset heat level for the recipe, the current heat level and the area of ​​the open flame holes 10 are determined when the relative deviation between the real-time temperature rise rate and the target temperature rise rate is within 5%. Specifically, when the difference between the real-time temperature rise rate and the target temperature rise rate is greater than 5%, the heat level is coarsely adjusted, i.e., the heat level is reduced by one level. When the real-time temperature rise rate and the target temperature rise rate are less than -5%, the heat level is coarsely adjusted, i.e., the heat level is increased by one level, while the temperature rise rate is adjusted by increasing the area of ​​the open flame holes 10. After reaching the target cooking temperature, the heat level is reduced to a minimum level to avoid significant temperature overshoot. The heat level is then reduced to a minimum level while the open area of ​​the flame holes 10 is fully opened. This is done for a preset time t (e.g., 30 seconds) to prevent over-adjustment of the heat level from affecting subsequent heat level adjustments. The heat level adjustment step then begins, during the constant temperature cooking phase, with fine adjustment of the area of ​​the flame holes 10 followed by coarse adjustment of the heat level. Specifically, when the real-time cooking temperature is higher than the target cooking temperature by more than 5°C, the actual cooking temperature is lowered by reducing the open area of ​​the fire hole 10. The area of ​​the fire hole 10 can be adjusted in the range of 0-100%. When the real-time cooking temperature is lower than the target cooking temperature by more than 5°C, the firepower level is coarsely adjusted, that is, the firepower is increased by one level, and the deviation between the real-time cooking temperature and the target cooking temperature is continuously judged and cyclically adjusted. When the deviation between the real-time cooking temperature and the target cooking temperature is within the range of -5 to 5°C, cooking continues, and cooking ends when the actual constant temperature cooking time is consistent with the target constant temperature cooking time.

[0077] Example 2, please refer to Figure 10 , the S6 specifically includes the following steps:

[0078] S61: Determine whether Ti-T0 < T1. If so, increase the firepower of the gas stove by one level and repeat S61. If not, proceed to S62.

[0079] S62: Determine whether Ti-T0>T2. If so, reduce the area of ​​the fire hole 10 opened by the fire control device 100 and return to S61. If not, proceed to S63.

[0080] S63: Determine whether ti=t0, if yes, cooking is finished, if not, return to S61;

[0081] Among them, ti is the actual constant temperature cooking time, t0 is the target constant temperature cooking time, T1>T2.

[0082] Specifically, if the cooking process enters the constant temperature cooking stage and the required gear is the lowest gear with a lower firepower, the specific steps of S6 of the above-mentioned embodiment 2 are applied to quickly adjust to the required minimum cooking firepower. For example, the steps for slow-cooking a delicious soup are as follows: calling the slow-cooking delicious soup cooking program, obtaining cooking parameters, the target cooking temperature is 95°C, the heating rate in the heating stage is 0.14°C / s, and the constant temperature cooking time is 4 hours. Ignite the burner, detect the current real-time cooking temperature and find it is 25°C, the temperature compensation value is 10°C, and the real-time cooking temperature is less than 85°C, then enter the heating stage firepower adjustment step. Starting with the preset heat level for the recipe, the current heat level and the area of ​​the flame holes 10 are determined when the relative deviation between the real-time heat rate and the target heat rate is within 5%. Specifically, when the real-time heat rate and the target heat rate are greater than 5%, the heat level is coarsely adjusted, i.e., the heat level is reduced by one level. When the real-time heat rate and the target heat rate are less than -5%, the heat level is coarsely adjusted, i.e., the heat level is increased by one level, while the heat level is adjusted by increasing the area of ​​the flame holes 10. After reaching the target cooking temperature, the heat level is reduced to the minimum level to avoid significant overshoot, while the area of ​​the flame holes 10 is opened to 100%. This is done for a preset time t (e.g., 30 seconds) to prevent over-adjustment from affecting subsequent heat level adjustments. The heat level adjustment step then begins, which involves coarse adjustment of the heat level and fine adjustment of the area of ​​the flame holes 10. Specifically, when the real-time cooking temperature is higher than the target cooking temperature by more than 5°C, the firepower level is roughly adjusted, that is, the firepower is reduced by one level; when the actual temperature is lower than the target temperature by more than 5°C, the firepower is adjusted by increasing the area of ​​the fire hole 10 opened, and the deviation between the real-time cooking temperature and the target cooking temperature is continuously judged for cyclic adjustment. When the deviation between the real-time cooking temperature and the target cooking temperature is within the range of -5 to 5°C, cooking continues, and cooking ends when the actual constant temperature cooking time is consistent with the target constant temperature cooking time.

[0083] Optionally, Tc is 10°C to 30°C, V1 is -3% to -8%, V2 is 3% to 8%, T1 is -3°C to -5°C, and T2 is 3°C to 5°C.

[0084] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all fall within the scope of protection of the present invention.

Claims

1. A gas stove fire control device, characterized in that: The fire control device is arranged on the lower side of the fire hole (10) of the fire grate (1) of the gas stove, and comprises: The toggle structure (2) comprises at least two first blades (21), wherein two adjacent first blades (21) form the same angle between them; A follower assembly (30) comprises a plurality of follower structures (3) coaxially arranged with the toggle structure (2), two adjacent follower structures (3) being contact-connected with each other, a follower structure (3) close to the toggle structure (2) being contact-connected with the toggle structure (2), the follower structure (3) comprising at least two second blades (31), two adjacent second blades (31) forming the same angle, and the number of the second blades (31) of a follower structure (3) being the same as the number of the first blades (21); A driving structure is connected to the toggle structure (2) in a transmission manner. The driving structure can drive the toggle structure (2) to rotate in a first direction, thereby expanding the first fan blade (21), or simultaneously drive the follower assembly (30) to rotate in the first direction, thereby expanding the second fan blade (31) of the follower structure (3), or drive the toggle structure (2) to rotate in a second direction, thereby folding the first fan blade (21), or simultaneously drive the follower assembly (30) to rotate in the second direction, thereby folding the second fan blade (31) of the follower structure (3), wherein the first direction and the second direction are opposite to each other. A first toggle block (211) and a second toggle block (212) are provided on the first fan blade (21), and a third toggle block (311) and a fourth toggle block ( 312), when the driving structure drives the toggle structure (2) to rotate along the first direction, the second toggle block (212) can act on the third toggle block (311) of a follower structure (3) adjacent to the toggle structure (2), thereby unfolding the second fan blade (31) of the follower structure (3), and the fourth toggle block (312) of one of the two adjacent follower structures (3) can act on the third toggle block (311) of the other follower structure (3), thereby unfolding part or all of the second fan blade (31) of the follower structure (3); when the driving structure drives the toggle structure (2) to rotate along the second direction, the first toggle block (211) can act on the second fan blade (31), thereby folding part or all of the second fan blade (31).

2. The gas stove fire control device according to claim 1, characterized in that: The follower assembly (30) is located on the lower side of the toggle structure (2), the first toggle block (211) is arranged on the side of the first fan blade (21) facing the first direction and extending downward, the second toggle block (212) is arranged on the side of the first fan blade (21) facing the second direction and extending downward, the third toggle block (311) is arranged on the side of the second fan blade (31) facing the first direction and extending upward, and the fourth toggle block (312) is arranged on the side of the second fan blade (31) facing the second direction and extending downward.

3. The gas stove fire control device according to claim 1, characterized in that: The toggle structure (2) and the follower structure (3) are both integrally formed.

4. The gas stove fire control device according to claim 1, characterized in that: The toggle structure (2) has four first blades (21), and the follower structure (3) has four second blades (31). When the first blades (21) and the second blades (31) are fully unfolded, the first blades (21) and the second blades (31) enclose and form a circle.

5. The gas stove fire control device according to any one of claims 1 to 4, characterized in that: The driving structure is a stepping motor, and the output shaft of the stepping motor is connected to a transmission hole (210) arranged at the center of the toggle structure (2).

6. The gas stove fire control device according to claim 5, characterized in that: A shaft hole (310) is provided in the middle of each of the plurality of follower structures (3), and a rotating shaft is passed through the shaft hole (310).

7. A method for controlling a gas stove fire control device according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1: The gas stove is started, the cooking temperature parameters are called according to the cooking recipe, and the gas stove runs at the preset fire level; S2: Determine whether T0-Ti>Tc. If so, proceed to S3; if not, proceed to S5. S3: Determine whether Vi≤V1. If so, proceed to S4. If not, reduce the gas stove's power by one level and return to S2. S4: Determine whether Vi ≥ V2. If so, return to S2. If not, increase the firepower of the gas stove by one level and reduce the area of ​​the fire hole through the firepower control device. S5: The gas stove is operated at the lowest gear fire power, and the fire hole area is opened to the maximum through the fire power control device for a preset time t; S6: determining whether to adjust the fire power level according to the difference between Ti and T0, or adjusting the fire hole area through the fire power control device until cooking is completed; Where Ti is the real-time cooking temperature, T0 is the target cooking temperature, Tc is the temperature compensation value, Vi is the relative heating rate, Vi=(Ci-C0) / C0, Ci is the real-time heating rate, C0 is the target heating rate, and V1>V2.

8. The control method of the gas stove fire control device according to claim 7, characterized in that: The S6 specifically includes the following steps: S61: Determine whether Ti-T0<T1. If so, reduce the area of ​​the fire hole opened by the fire control device and repeat S61. If not, proceed to S62. S62: Determine whether Ti-T0>T2. If so, increase the gas stove's power by one level and return to S61. If not, proceed to S63. S63: Determine whether ti=t0, if yes, cooking is finished, if not, return to S61; Among them, ti is the actual constant temperature cooking time, t0 is the target constant temperature cooking time, T1>T2.

9. The control method of the gas stove fire control device according to claim 7, characterized in that: The S6 specifically includes the following steps: S61: Determine whether Ti-T0 < T1. If so, increase the firepower of the gas stove by one level and repeat S61. If not, proceed to S62. S62: Determine whether Ti-T0>T2. If so, reduce the area of ​​the fire hole opened by the fire control device and return to S61. If not, enter S63. S63: Determine whether ti=t0, if yes, cooking is finished, if not, return to S61; Among them, ti is the actual constant temperature cooking time, t0 is the target constant temperature cooking time, T1>T2.

10. The control method of the gas stove fire control device according to claim 8 or 9, characterized in that: Tc is 10°C to 30°C, V1 is -3% to -8%, V2 is 3% to 8%, T1 is -3°C to -5°C, and T2 is 3°C to 5°C.

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