Energy focusing disc pot rack, stove and control method of stove

Abstract

The application discloses a energy-gathering disc pot rack, a stove and a control method of the stove, and belongs to the technical field of stoves and control methods thereof. The application discloses the energy-gathering disc pot rack, which comprises an energy-gathering upper disc, an energy-gathering lower disc, a impeller assembly, a thermocouple, a temperature sensor and a control unit. The energy-gathering upper disc is provided with an air inlet hole. The energy-gathering lower disc is provided with an air outlet cover. The energy-gathering upper disc and the energy-gathering lower disc are buckled to form an air cavity. The air inlet hole is connected to the outside of the energy-gathering upper disc. The air outlet cover is connected to the outside of the energy-gathering lower disc. The impeller assembly is arranged in the air cavity. The thermocouple is used for detecting the temperature value in the heat range of the burner. The temperature sensor is used for detecting the temperature value of the flue gas. The control unit is used for controlling the operation of the impeller assembly. The energy-gathering disc pot rack, the stove and the control method of the stove can determine whether the impeller assembly needs to be started according to the temperature value of the flue gas, reduce the energy consumption and prolong the service life of the impeller assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cookers and control methods thereof, in particular to a focus cup burner grate, a cooker comprising the focus cup burner grate, and a control method based on the cooker. BACKGROUND

[0002] A gas cooker can generate heat by burning natural gas, and use the heat for cooking. In order to improve the cooking speed, some existing gas cookers comprise a burner grate with a focus cup, which uses the bowl-shaped focus cup to gather high-temperature flue gas, prolongs the contact time of the high-temperature flue gas with the cookware, and improves the utilization rate of heat.

[0003] During the operation of the gas cooker, high-temperature flue gas is continuously generated. Excessive accumulation of high-temperature flue gas can cause the air pressure in the range of the focus cup to be too high, which poses a safety hazard. In order to solve this problem, a smoke outlet is provided on the focus cup burner grate. The newly generated high-temperature flue gas pushes the previously generated high-temperature flue gas to flow to the smoke outlet until the previously generated high-temperature flue gas flows out of the smoke outlet. In addition, in order to improve the utilization rate of the heat of the high-temperature flue gas, some existing focus cup burner grates are provided with an impeller for driving the flow of the high-temperature flue gas. The impeller can better control the flow direction of the high-temperature flue gas.

[0004] The defects of the gas cooker include that the impeller is continuously in a working state and cannot be started and stopped according to the working state of the current burner, the energy consumption is high, and the service life of the impeller is short. SUMMARY

[0005] The purpose of the present application is to provide a focus cup burner grate, a cooker comprising the focus cup burner grate, and a control method based on the cooker, which solves the problem of high energy consumption caused by the continuous working state of the impeller and prolongs the service life of the impeller.

[0006] To achieve this purpose, on the one hand, the present application adopts the following technical solutions:

[0007] The focus cup burner grate comprises: a focus upper cup provided with an air inlet hole; a focus lower cup provided with an air outlet cover inclined upward; the focus upper cup and the focus lower cup are buckled to form an air cavity, the air inlet hole connects the air cavity to the outside of the focus upper cup, and the air outlet cover connects the air cavity to the outside of the focus lower cup; an impeller assembly is arranged in the air cavity; a thermocouple is used to detect the temperature value in the heat coverage range of the burner; a temperature sensor is used to detect the temperature value of the flue gas leaving the focus cup burner grate; and a control unit is electrically connected to the impeller assembly, the thermocouple, and the temperature sensor, respectively.

[0008] In one preferred embodiment, the focus cup burner grate further comprises a smoke outlet for diffusion of the flue gas, and the temperature sensor is arranged on the extension path of the smoke outlet.

[0009] In one preferred embodiment, the upper energy-gathering disc is uniformly provided with a plurality of air inlet holes, and the lower energy-gathering disc is uniformly provided with a plurality of air outlet covers, and the total area of all the air outlet covers is two to five times the total area of all the air inlet holes.

[0010] In another aspect, the present application adopts the following technical solutions:

[0011] The stove comprises a burner, and further comprises the energy-gathering disc pot rack described above, the burner is arranged at the middle part of the energy-gathering disc pot rack, and the thermocouple is arranged in the heat coverage range of the burner.

[0012] In another aspect, the present application adopts the following technical solutions:

[0013] The control method of the stove is based on the stove described above, and the control method of the stove comprises:

[0014] The burner is turned on.

[0015] The thermoelectric potential E of the thermocouple is acquired and fed back to the control part.

[0016] When the time when E is greater than the first set value exceeds S1, it is judged that the stove is in a continuous use state.

[0017] The temperature sensor is started, and the flue gas temperature T1 is continuously detected.

[0018] In one preferred embodiment, the first set value is 3 mV ± 0.3 mV; and / or, S1 ∈ [30 seconds, 90 seconds].

[0019] In one preferred embodiment, the control method of the stove further comprises:

[0020] When the flue gas temperature T1 is greater than the upper temperature limit, it is judged that the burner is in a continuous use state.

[0021] The impeller assembly is started, the flue gas enters the air cavity through the air inlet hole, and the flue gas flows out of the air cavity after passing through the impeller assembly and the air outlet cover.

[0022] The flue gas temperature T1 is continuously detected, and when the flue gas temperature T1 is less than the lower temperature limit, it is judged that the burner is in a small fire state.

[0023] The impeller assembly is turned off.

[0024] In one preferred embodiment, the upper temperature limit ∈ [100℃, 120℃]; and / or, the lower temperature limit ∈ [70℃, 90℃].

[0025] In one preferred embodiment, the control method of the stove further comprises:

[0026] acquire the thermoelectric potential E of the thermocouple and feedback to the control unit;

[0027] when the time when E is less than the second set value exceeds S2, it is judged that the burner is in the closed state;

[0028] the temperature sensor is closed;

[0029] the impeller assembly is closed after the delay time S3.

[0030] In one preferred embodiment, the second set value is 1 mV ± 0.1 mV; and / or, S2 ∈ [10 seconds, 45 seconds]; and / or, S3 ∈ [45 seconds, 75 seconds].

[0031] The disclosed energy-gathering disc pot rack includes an impeller assembly and a temperature sensor. The disclosed stove includes the above-mentioned energy-gathering disc pot rack. The temperature value of the flue gas leaving the energy-gathering disc pot rack is used to determine whether the impeller assembly needs to be started. When the flue gas temperature is high and the amount is large, the flue gas flow speed is increased, and too much flue gas is prevented from gathering between the energy-gathering disc pot rack and the cookware, making the use safer. When the flue gas temperature is low and the amount is small, the impeller assembly is closed, the energy consumption is reduced, and the service life of the impeller assembly is prolonged.

[0032] The disclosed control method of the stove determines that the stove is in a continuous use state, then starts the temperature sensor, continuously detects the flue gas temperature T1, and uses the temperature value of the flue gas leaving the energy-gathering disc pot rack to determine whether the impeller assembly needs to be started. The energy consumption is reduced, the thermal efficiency is improved, and the waste heat utilization rate of high-temperature flue gas is high. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a combined structure schematic diagram of the energy-gathering upper disc and the energy-gathering lower disc provided by the embodiment of the present application;

[0034] Figure 2 is a use state sectional view of the energy-gathering disc pot rack provided by the embodiment of the present application;

[0035] Figure 3 is Figure 2 is a local enlarged view of A in FIG. 5;

[0036] Figure 4 is a flow chart of the control method of the stove provided by the embodiment of the present application.

[0037] In the drawings:

[0038] 1, upper focusing disc; 2, lower focusing disc; 3, impeller assembly; 4, thermocouple; 5, control unit; 6, temperature sensor; 7, air cavity; 8, cooker; 9, burner; 11, air inlet hole; 12, vortex retaining bag; 13, vortex area; 14, smoke outlet; 21, air outlet cover; 71, air inlet area; 72, air outlet area. DETAILED DESCRIPTION

[0039] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the scope of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0040] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, 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 limiting the present application.

[0041] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0042] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically defined. 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.

[0043] In the present application, unless otherwise explicitly specified and limited, a first feature is "on" or "under" a second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature is "over", "above" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. The first feature is "under", "below" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0044] It should be noted that when an element is referred to as being "fixed to" or "set to" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be an intermediate element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0045] The present embodiment discloses a focusing disc pot rack, a stove comprising the focusing disc pot rack, and a control method based on the stove, as shown in Figures 1 to 3 The focusing disc pot rack comprises a focusing upper disc 1, a focusing lower disc 2, an impeller assembly 3, a thermocouple 4, a control part 5 and a temperature sensor 6, and the stove comprises a burner 9 arranged in the middle of the focusing disc pot rack. The thermocouple 4 is arranged in the thermal coverage of the burner 9 and is used to detect the temperature value in the thermal coverage of the burner 9. The focusing disc pot rack can be arranged in a single-layer, double-layer or multi-layer structure of three or more layers, and the present embodiment takes the double-layer structure as an example for illustration.

[0046] The focusing upper disc 1 is provided with a vortex-keeping bag 12 and a vortex area 13. The vortex-keeping bag 12 is a ring-shaped convex ridge structure, and the vortex area 13 is a curved surface structure in the shape of a tile. The vortex-keeping bag 12 and the vortex area 13 jointly form an area for accommodating high-temperature flue gas. The vortex area 13 is provided with an air inlet hole 11 in the form of a through hole. In the case of an internal and external pressure difference, high-temperature flue gas can enter the inside of the focusing disc pot rack through the air inlet hole 11.

[0047] The energy-gathering lower disc 2 is arranged below the energy-gathering upper disc 1, the inner hole of the energy-gathering upper disc 1 is connected with the inner hole of the energy-gathering lower disc 2 in a fit manner, the outer edge of the energy-gathering upper disc 1 is connected with the outer edge of the energy-gathering lower disc 2 in a fit manner, and the two are buckled to form the air cavity 7. The energy-gathering lower disc 2 is provided with the air outlet cover 21 which is inclined upward, the air inlet hole 11 connects the air cavity 7 to the outside of the energy-gathering upper disc 1, and the air outlet cover 21 connects the air cavity 7 to the outside of the energy-gathering lower disc 2. The specific inclination angle of the air outlet cover 21 is not limited, and the flue gas flowing out of the air outlet cover 21 can be sprayed to the bottom surface or the side wall surface of the cooker 8. In the embodiment, the extension direction of the air outlet cover 21 forms an angle of 0° to 45° with the vertical plane, and the flue gas can be more gathered on the bottom surface of the cooker 8, so that the flue gas can move along the bottom surface and the side wall surface of the cooker 8, thereby improving the waste heat utilization amount of the high-temperature flue gas and improving the combustion heat efficiency.

[0048] The impeller assembly 3 is arranged in the air cavity 7, and the impeller assembly 3 can guide the flow direction of the high-temperature flue gas and improve the flow speed when working. Specifically, the air cavity 7 is divided into an air inlet area 71 and an air outlet area 72 by a baffle (not shown), the air inlet of the impeller assembly 3 is connected to the air inlet area 71, and the air outlet of the impeller assembly 3 is connected to the air outlet area 72. The impeller assembly 3 can transport the flue gas in the air inlet area 71 to the air outlet area 72, provide driving force for the flue gas to enter the air cavity 7 through the air inlet hole 11 and flow out of the air cavity 7 through the air outlet cover 21, improve the flow speed of the flue gas, and control the flow direction of the flue gas.

[0049] The control unit 5 is electrically connected with the impeller assembly 3, the thermocouple 4 and the temperature sensor 6 respectively, and the temperature sensor 6 is used to detect the temperature value of the flue gas leaving the energy-gathering disc cooker stand. In the embodiment, the control unit 5 can be a centralized or distributed controller. For example, the controller can be a single microcontroller or a plurality of microcontrollers distributedly arranged. The microcontroller can run a control program to control the impeller assembly 3, the thermocouple 4 and the temperature sensor 6 to realize their functions.

[0050] The energy-gathering disc cooker stand is provided with the temperature sensor 6, and whether the impeller assembly 3 needs to be started is judged according to the temperature value of the flue gas leaving the energy-gathering disc cooker stand. When the temperature and quantity of the flue gas are high, the flow speed of the flue gas can be improved, and too much flue gas can be prevented from gathering between the energy-gathering disc cooker stand and the cooker 8, so that the use is safer. When the temperature and quantity of the flue gas are low, the impeller assembly 3 can be turned off to reduce energy consumption and prolong the service life of the impeller assembly 3. Moreover, after the impeller assembly 3 is turned off, the flue gas will be located between the energy-gathering disc cooker stand and the cooker 8 for a longer time, the contact time between the flue gas and the cooker 8 is prolonged, the heat efficiency is improved, and the waste heat utilization rate of the high-temperature flue gas is high.

[0051] The specific connection mode between the upper energy-gathering disc 1 and the lower energy-gathering disc 2 is not limited, as long as the two can be firmly connected. In the embodiment, the upper energy-gathering disc 1 and the lower energy-gathering disc 2 can be combined by welding process (including full welding and spot welding), or by rolling edge or riveting process. The processing technology is mature, the processing efficiency is high, and the cost is low.

[0052] The air cavity 7 is filled with air, which reduces the metal contact area between the upper energy-gathering disc 1 and the lower energy-gathering disc 2. The heat conduction capacity of air is lower than that of metal, and the heat loss of the energy-gathering disc and pot rack during cooking can be reduced by using this characteristic.

[0053] The specific setting position of the temperature sensor 6 is not limited, as long as it can detect the temperature value of the flue gas leaving the energy-gathering disc and pot rack. In the embodiment, the energy-gathering disc and pot rack further comprises a smoke exhaust port 14 for flue gas diffusion, and the temperature sensor 6 is arranged on the extension path of the smoke exhaust port 14. When the high-temperature flue gas is discharged from the smoke exhaust port 14, it will pass through the temperature sensor 6, and the change of the high-temperature flue gas will cause the temperature sensor 6 to emit different electric signals, thereby detecting the temperature value of the flue gas leaving the energy-gathering disc and pot rack.

[0054] On the basis of the above structure, a plurality of air inlet holes 11 are uniformly arranged on the upper energy-gathering disc 1, and a plurality of air outlet covers 21 are uniformly arranged on the lower energy-gathering disc 2. The total area of all air outlet covers 21 is two to five times the total area of all air inlet holes 11. In this structure, the speed of the high-temperature flue gas leaving the air outlet cover 21 is less than 0.2 m / s. Reducing the speed of the high-temperature flue gas leaving the air outlet cover 21 can reduce the amount of high-temperature flue gas diffusing to the surroundings, allowing more high-temperature flue gas to flow along the bottom surface and side wall surface of the cooker 8, improving the utilization rate of high-temperature flue gas waste heat, and improving the thermal efficiency.

[0055] A gap is formed between the central through hole of the energy-gathering disc and pot rack and the outer periphery of the burner 9. The circumferential annular gap is a secondary air supplement port for supplying secondary air required for combustion, and the combustion is more complete. The lower energy-gathering disc 2 is supported on the table top (not shown) by a plurality of bottom feet (not shown) arranged on the bottom thereof, and there is a certain distance between the lower energy-gathering disc 2 and the table top, thereby forming an air supplement channel. When the burner 9 is burning, air is supplied to the burner 9 through the air supplement channel, ensuring that the combustion is more complete.

[0056] The specific distance between the lowest part of the lower energy-gathering disc 2 and the table top is not limited, as long as it can sufficiently supplement the secondary air and will not cause heat loss due to excessive distance. In the embodiment, the distance between the lowest part of the lower energy-gathering disc 2 and the table top is in the range of 5 mm to 12 mm, which is beneficial to the introduction of secondary air and can reduce the heat wetting in the air cavity 7, thereby improving the combustion thermal efficiency.

[0057] On the basis of the above structure, the specific machining process of the air inlet hole 11 is not limited, and can adopt but is not limited to flanging or punching process, and the machining efficiency is high. The specific shape of the air inlet hole 11 is not limited, and can be but is not limited to circular, square, oval and the like, which is beneficial to the smooth passage of flue gas. In order to reduce the vibration of the energy gathering upper disc 1 caused by the flue gas passing through the air inlet hole 11, the center of the energy gathering upper disc 1 is circular, and the plurality of air inlet holes 11 are uniformly arranged in a ring shape. When the flue gas passes through the air inlet hole 11, the stress of the whole energy gathering upper disc 1 is more balanced, the vibration is smaller, the noise is smaller, and the use experience is good. In order to increase the air flow, a circle or more air inlet holes 11 can be arranged on the energy gathering upper disc 1, and more flue gas can also pass through the air inlet hole 11 into the air cavity 7. The upper surface of the energy gathering upper disc 1 is preferably a structure with a lower inner hole and a higher outer edge, which is beneficial to gathering combustion heat energy, prolonging the contact time of high-temperature flue gas with the cooker 8, and reducing heat energy loss.

[0058] The specific machining process of the air outlet cover 21 is not limited, and can adopt but is not limited to welding or stretching process, and the machining efficiency is high. The specific shape of the air outlet cover 21 is not limited, and in the embodiment, the cross section of the air outlet cover 21 is in the shape of a long hole along the direction perpendicular to the airflow. The length of a single air outlet cover 21 is 5mm to 25mm, and the width is not limited. In order to increase the air outlet amount, a plurality of air outlet covers 21 can be uniformly arranged on the outer side of the energy gathering lower disc 2 in a circumferential direction, and the air outlet cover 21 can form a circle or more structures.

[0059] As shown in Figures 1 to 4 The control method of the above stove comprises:

[0060] The user rotates the knob, and the burner 9 is turned on. The thermoelectric potential E of the thermocouple 4 is obtained and fed back to the control part 5. When the E is greater than the first set value for more than S1, it is judged that the stove is in a continuous use state. The temperature sensor 6 is started by the control part 5, and the flue gas temperature T1 is continuously detected. The first set value is 3mV±0.3mV, and is preferably 3mV. S1∈[30s, 90s], and is preferably 60s.

[0061] After the burner 9 reaches the continuous use state, the flue gas temperature is monitored, and the temperature sensor 6 does not need to work all the time, the working time of the temperature sensor 6 is shortened, the service life of the temperature sensor 6 is improved, and the electric energy is saved.

[0062] On the basis of the above steps, the control method of the stove further comprises: continuously refreshing the flue gas temperature T1 monitored by the temperature sensor 6, when the flue gas temperature T1 is greater than the upper limit of temperature, it is judged that the burner 9 is in a continuous use state and the generated flue gas temperature is high; the control part 5 starts the impeller assembly 3, the high-temperature flue gas enters the air cavity 7 through the air inlet hole 11, and the high-temperature flue gas flows out of the air cavity 7 after passing through the air outlet cover 21. The flue gas temperature T1 is continuously detected, and when the flue gas temperature T1 continuously decreases, it is judged that the burner 9 is in a small fire state and the generated flue gas temperature is low; the control part 5 closes the impeller assembly 3. Wherein, the upper limit of temperature ∈ [100℃, 120℃], preferably 110℃; the lower limit of temperature ∈ [70℃, 90℃], preferably 80℃.

[0063] According to the high and low of the flue gas temperature, the start and stop of the impeller assembly 3 is adjusted, so as to control the flow speed and flow direction of the high-temperature flue gas. Specifically, when the fire is large, the high-temperature flue gas supplement is large, and starting the impeller assembly 3 helps to speed up the flow speed of the high-temperature flue gas, avoids that the air pressure between the energy -collecting disc pot rack and the cooker 8 is too large, and uses more safely; After turning to small fire, the flue gas supplement is small, and closing the impeller assembly 3 helps to save energy and reduce consumption, and the flue gas can stay between the energy -collecting disc pot rack and the cooker 8 for a period of time, which better utilizes the high-temperature flue gas waste heat and improves the thermal efficiency.

[0064] On the basis of the above steps, the control method of the stove further comprises: obtaining the thermoelectric potential E of the thermocouple 4, and feeding back to the control part 5; When the time when E is less than the second set value exceeds S2, it is judged that the burner 9 is in a closed state; the control part 5 closes the temperature sensor 6, if the impeller assembly 3 is currently in a closed state, the control part 5 starts the impeller assembly 3; If the impeller assembly 3 is currently in a working state, it is kept in a working state, and the impeller assembly 3 is closed after a delay time S3. Wherein, the second set value is 1mV±0.1mV, preferably 1mV; S2 ∈ [10 seconds, 45 seconds], preferably 30 seconds; S3 ∈ [45 seconds, 75 seconds], preferably 60 seconds.

[0065] After the burner 9 is closed, the impeller assembly 3 continues to work for a period of time, so that the airflow enters the air cavity 7 through the air inlet hole 11, and then flows out of the air cavity 7 after passing through the air outlet cover 21, which utilizes the airflow to cool the energy -collecting disc pot rack, avoids that the user is scalded when touching the pot rack, improves the user experience, and uses more safely.

[0066] Note that the above merely describes preferred embodiments of the present application and the applied technical principles. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, modifications and substitutions can be made without departing from the scope of the present application. Therefore, although the present application has been described in detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the claims.

Claims

1. A shaped charge pan holder characterized by, The utility model relates to a kind of energy-gathering disc pot rack, including: Energy-gathering upper disc (1), air inlet hole (11) is arranged on it; Energy-gathering lower disc (2), air outlet cover (21) is arranged on it and is inclined upward, the energy-gathering upper disc (1) and the energy-gathering lower disc (2) are closed after surrounding air cavity (7), the air inlet hole (11) is connected to the outside of the energy-gathering upper disc (1) with the air cavity (7), the air outlet cover (21) is connected to the outside of the energy-gathering lower disc (2) with the air cavity (7); Impeller assembly (3) is arranged in the air cavity (7); Thermocouple (4) is used to detect the temperature value in the thermal force coverage of burner (9); Temperature sensor (6) is used to detect the temperature value of flue gas leaving the energy-gathering disc pot rack; And, Control unit (5) is electrically connected with impeller assembly (3), thermocouple (4) and temperature sensor (6) respectively.

2. The focused cup pot rack of claim 1, wherein, The energy-gathering disc pot rack further includes exhaust port (14) for the diffusion of the flue gas, and the temperature sensor (6) is arranged on the extension path of the exhaust port (14).

3. The focused cup pot rack of claim 1 or 2, wherein, A plurality of air inlet holes (11) are uniformly arranged on the energy-gathering upper disc (1), and a plurality of air outlet covers (21) are uniformly arranged on the energy-gathering lower disc (2), and the total area of all the air outlet covers (21) is two to five times the total area of all the air inlet holes (11).

4. Hob comprising a burner (9), characterized in that The energy-gathering disc pot rack further includes a burner (9) arranged in the middle of the energy-gathering disc pot rack, and a thermocouple (4) arranged in the thermal force coverage of the burner (9).

5. Control method of a hob, based on the hob according to claim 4, characterized in that, The control method of the stove includes: The burner (9) is turned on; The thermoelectric potential E of the thermocouple (4) is obtained and fed back to the control unit (5); When E is greater than the first set value for more than S1, it is determined that the stove is in a continuous use state; The temperature sensor (6) is started, and the flue gas temperature T1 is continuously detected.

6. The control method of the cooktop according to claim 5, characterized in that, The first set value is 3 mV ± 0.3 mV; and / or, S1 ∈ [30 seconds, 90 seconds].

7. The control method of the cooktop according to claim 5, characterized in that, The control method of the stove further includes: When the flue gas temperature T1 is greater than the upper temperature limit, it is determined that the burner (9) is in a continuous use state; The impeller assembly (3) is started, the flue gas enters the air cavity (7) through the air inlet hole (11), and the flue gas flows out of the air cavity (7) after passing through the impeller assembly (3) and the air outlet cover (21); The flue gas temperature T1 is continuously detected, and when the flue gas temperature T1 is less than the lower temperature limit, it is determined that the burner (9) is in a small fire state; The impeller assembly (3) is turned off.

8. The control method of the cooktop according to claim 7, characterized in that, The upper temperature limit ∈ [100 ℃, 120 ℃]; and / or, the lower temperature limit ∈ [70 ℃, 90 ℃].

9. The control method of the cooktop according to claim 7, characterized in that, The control method of the stove further includes: The thermoelectric potential E of the thermocouple (4) is obtained and fed back to the control unit (5); When E is less than the second set value for more than S2, it is determined that the burner (9) is in an off state; The temperature sensor (6) is turned off; The impeller assembly (3) is turned off after a delay time S3.

10. The control method of the cooktop according to claim 9, characterized in that, The second set value is 1 mV ± 0.1 mV; and / or, S2 ∈ [10 seconds, 45 seconds]; and / or, S3 ∈ [45 seconds, 75 seconds].

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