Energy focusing disc pot rack, stove and stove control method

Abstract

The application discloses a focus dish pot rack, a stove and a stove control method, and belongs to the technical field of stoves and control methods thereof. The focus dish pot rack, the stove and the stove control method are designed to solve the problem of uncontrolled high-temperature flue gas flow direction. The focus dish pot rack disclosed by the application comprises a focus upper dish, an air inlet hole is formed in the focus upper dish, a focus lower dish, an air outlet cover is arranged on the outer side of the focus lower dish, the air inlet hole can allow air to enter a cavity, the air outlet cover can allow air in the cavity to be discharged to the outside of the focus lower dish, a thermocouple, a impeller assembly for driving air outside the focus upper dish to enter the cavity and / or for driving air in the cavity to be discharged to the outside of the focus lower dish, and a control unit. The focus dish pot rack, the stove and the stove control method disclosed by the application drive high-temperature flue gas outside the focus upper dish to enter the cavity and / or drive high-temperature flue gas in the cavity to be discharged to the outside of the focus lower dish by the impeller assembly. After the high-temperature flue gas leaves the air outlet cover, the high-temperature flue gas is sprayed to the bottom and the side wall of a pot, the waste heat utilization rate is high, and the combustion heat efficiency is improved.

Description

Technical Field

[0001] This invention relates to the technical field of cooktops and their control methods, and more particularly to a pot holder with a high-energy-concentration plate, a cooktop including the pot holder with the high-energy-concentration plate, and a control method for the cooktop. Background Technology

[0002] Gas stoves generate heat through the combustion of natural gas. When pots and other cooking utensils are within this heat range, they can utilize this heat for cooking. To improve thermal efficiency, some existing gas stoves are equipped with a heat-concentrating plate pot rack. The high-temperature flue gas generated by the combustion of natural gas is concentrated in the heat-concentrating plate, thereby improving the heat exchange capacity between the high-temperature flue gas and the cooking utensils.

[0003] During the combustion of natural gas, high-temperature flue gas is continuously generated. In order to avoid excessive accumulation of high-temperature flue gas leading to excessively high gas pressure, a sufficiently large space needs to be left around the energy-concentrating plate to allow the high-temperature flue gas to leave the energy-concentrating plate after heat exchange.

[0004] The defects of this energy-concentrating pan and pot rack include: a small portion of the high-temperature flue gas can leave the energy-concentrating pan by rising upwards, and this portion of high-temperature flue gas can flow along the bottom and sides of the cookware, continuing to provide heat to the cookware; however, most of the high-temperature flue gas diffuses directly into the air, and the heat in this portion of high-temperature flue gas cannot be transferred to the cookware, resulting in heat loss and insufficient overall combustion thermal efficiency. Summary of the Invention

[0005] The purpose of this invention is to propose an energy-concentrating pot rack, a stove including the energy-concentrating pot rack, and a control method for the stove, which solves the problem of uncontrolled flow direction of high-temperature flue gas and achieves high combustion thermal efficiency.

[0006] To achieve this objective, the present invention employs the following technical solution:

[0007] A concentrating pot holder includes: an upper concentrating plate with an air inlet; a lower concentrating plate with an air outlet hood on its outer side, wherein the upper and lower concentrating plates are fastened together to form a cavity, the air inlet allowing air from outside the upper concentrating plate to enter the cavity, and the air outlet allowing air from the cavity to exit the lower concentrating plate; a thermocouple; an impeller assembly disposed in the cavity, the impeller assembly being used to drive air from outside the upper concentrating plate into the cavity and / or to drive air from the cavity to exit the lower concentrating plate; and a control unit, wherein the thermocouple and the impeller assembly are electrically connected to the control unit.

[0008] In one preferred embodiment, the energy-concentrating pan holder further includes a baffle disposed in the cavity, the baffle dividing the cavity into an air inlet area and an air outlet area, the air inlet of the impeller assembly being connected to the air inlet area, and the air outlet of the impeller assembly being connected to the air outlet area.

[0009] In one preferred embodiment, the through-hole in the vent extends in an upwardly inclined direction.

[0010] In one preferred embodiment, a plurality of air inlets are evenly provided on the upper energy-concentrating plate, and a plurality of air outlet hoods are evenly provided on the outer side of the lower energy-concentrating plate. The total area of ​​all the air outlet hoods is two to five times the total area of ​​all the air inlets.

[0011] On the other hand, the present invention adopts the following technical solution:

[0012] The stove includes a burner and the aforementioned energy-concentrating pot rack, wherein the burner is located in the middle of the energy-concentrating pot rack.

[0013] In one preferred embodiment, the thermocouple is positioned within the thermal coverage area of ​​the burner.

[0014] Furthermore, the present invention adopts the following technical solution:

[0015] A stove control method, based on the aforementioned stove, includes:

[0016] Start the burner;

[0017] Obtain the thermoelectric potential E of the thermocouple;

[0018] When the thermoelectric potential E is greater than the first set value for more than T1, the impeller assembly is activated to drive the high-temperature flue gas into the cavity through the air inlet and out of the cavity through the air outlet hood.

[0019] In one preferred embodiment, the first set value is 3mV ± 0.3mV; and / or, T1 is 60 seconds ± 30 seconds.

[0020] In one preferred embodiment, the stove control method further includes:

[0021] Obtain the thermoelectric potential E of the thermocouple;

[0022] When the thermoelectric potential E is less than the second set value for more than T2, the impeller assembly is shut down after a delay of T3.

[0023] In one preferred embodiment, the second set value is 1mV ± 0.1mV; and / or,

[0024] T2 is 10 to 45 seconds; and / or,

[0025] T3 ranges from 1 second to 10 seconds.

[0026] The energy-concentrating pot rack disclosed in this invention includes a thermocouple and an impeller assembly. The stove disclosed in this invention includes the above-mentioned energy-concentrating pot rack. The thermocouple can detect whether the burner is in use. The impeller assembly drives the high-temperature flue gas outside the upper energy-concentrating plate into the cavity and / or drives the high-temperature flue gas in the cavity to be discharged to the lower energy-concentrating plate. After leaving the exhaust hood, the high-temperature flue gas will be sprayed onto the bottom and side wall of the pot. The waste heat utilization rate is high, and the combustion thermal efficiency is improved.

[0027] The stove control method disclosed in this invention allows the burner to first reach a continuous operating state, and then activate the impeller assembly to drive the flow of high-temperature flue gas. This avoids insufficient high-temperature flue gas volume and ineffective operation of the impeller assembly in the early stage of combustion, shortens the operation time of the impeller assembly, extends the service life of the impeller assembly, and saves energy and reduces consumption. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the energy-concentrating pan and pot frame provided in a specific embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the usage state of the energy-concentrating pan and pot rack provided in a specific embodiment of the present invention;

[0030] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0031] Figure 4 This is a flowchart of a stove control method provided in a specific embodiment of the present invention.

[0032] In the picture:

[0033] 1. Energy-concentrating upper plate; 2. Energy-concentrating lower plate; 3. Cavity; 4. Thermocouple; 5. Impeller assembly; 6. Control unit; 7. Baffle; 8. Burner; 9. Cookware; 11. Air inlet; 12. Swirl; 13. Swirl zone; 21. Exhaust hood; 31. Air inlet zone; 32. Air outlet zone. Detailed Implementation

[0034] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0040] This embodiment discloses a pot-concentrating rack, a stove including the pot-concentrating rack, and a control method for the stove, such as... Figures 1 to 3 As shown, the energy-concentrating pan support includes an upper energy-concentrating pan 1, a lower energy-concentrating pan 2, a thermocouple 4, an impeller assembly 5, and a control unit 6. The thermocouple 4 and the impeller assembly 5 are electrically connected to the control unit 6. In this embodiment, the control unit 6 can be a centralized or distributed controller. For example, the controller can be a single microcontroller or a combination of multiple distributed microcontrollers. The microcontroller can run a control program to control the thermocouple 4 and the impeller assembly 5 to achieve their functions.

[0041] The stove includes a burner 8, which is located in the middle of the energy-concentrating pot rack. A thermocouple 4 is installed within the thermal coverage area of ​​the burner 8. The thermocouple 4 can detect the temperature value within the thermal coverage area of ​​the burner 8 and convert the temperature value into an electrical signal, which is then sent to the control unit 6. The control unit 6 controls the start and stop of the impeller assembly 5 according to the electrical signal.

[0042] The upper energy-concentrating plate 1 is provided with an air inlet 11, a vortex 12, and a vortex zone 13. The vortex 12 is an annular protrusion near the center of the upper energy-concentrating plate 1, and the vortex zone 13 is an arc-shaped surface away from the center of the upper energy-concentrating plate 1. The air inlet 11 is located within the vortex zone 13. An air outlet hood 21 is provided on the outer side of the lower energy-concentrating plate 2. The air outlet hood 21 has a through hole (not shown) for air outlet, and the extension direction of the air outlet hood 21 defines the air outlet direction.

[0043] The upper energy-concentrating plate 1 is fastened to the lower energy-concentrating plate 2 from top to bottom. The inner edge of the upper energy-concentrating plate 1 is fitted and connected to the inner edge of the lower energy-concentrating plate 2, and the outer edge of the upper energy-concentrating plate 1 is fitted and connected to the outer edge of the lower energy-concentrating plate 2. A cavity 3 is formed between the upper energy-concentrating plate 1 and the lower energy-concentrating plate 2. The upper energy-concentrating plate 1 can be a single-layer, double-layer, triple-layer, or multi-layer structure. In this embodiment, a double-layer structure is used as an example for explanation.

[0044] The cavity 3 is filled with air, which reduces the metal contact area between the upper energy-concentrating plate 1 and the lower energy-concentrating plate 2. Utilizing the lower thermal conductivity of air compared to metal, this reduces heat loss caused by inter-metal heat conduction during operation, thus improving the heat insulation effect of the energy-concentrating plate and pot frame. The connection method between the upper energy-concentrating plate 1 and the lower energy-concentrating plate 2 is not limited; it can employ, but is not limited to, a combination of welding processes (including full welding and spot welding), edge pressing, or riveting.

[0045] The air inlet 11 allows high-temperature flue gas outside the upper energy-concentrating plate 1 to enter the cavity 3, and the exhaust hood 21 allows high-temperature flue gas in the cavity 3 to be discharged to the outside of the lower energy-concentrating plate 2. To improve the flow capacity of the high-temperature flue gas, an impeller assembly 5 is provided in the cavity 3. The impeller assembly 5 is used to drive air outside the upper energy-concentrating plate 1 into the cavity 3, and / or to drive air in the cavity 3 to be discharged to the outside of the lower energy-concentrating plate 2.

[0046] Based on the above structure, the energy-concentrating pan and pot rack also includes a baffle 7 disposed in the cavity 3. The baffle 7 divides the cavity 3 into an air inlet zone 31 and an air outlet zone 32. The air inlet of the impeller assembly 5 is connected to the air inlet zone 31, and the air outlet of the impeller assembly 5 is connected to the air outlet zone 32.

[0047] When the stove is working, the high-temperature flue gas generated by the burner 8 accumulates within the vortex zone 13. The continuously increasing high-temperature flue gas raises the air pressure within the vortex zone 13, and the operation of the impeller assembly 5 further reduces the air pressure near the air inlet 11 in the cavity 3. Specifically, when the impeller assembly 5 is working, the centrifugal force of the impeller rotation makes the air inlet zone 31 a negative pressure zone. Under the negative pressure, the high-temperature flue gas accelerates from the air inlet 11 into the air inlet zone 31, improving the efficiency of the high-temperature flue gas entering the cavity 3 within the vortex zone 13. The high-temperature flue gas in the air inlet zone 31 enters the air outlet zone 32 after passing through the air inlet and outlet of the impeller assembly 5. The centrifugal force of the impeller makes the air outlet zone 32 a positive pressure zone, and the high-temperature flue gas is discharged through the air outlet hood 21 to the outside of the energy-concentrating lower plate 2, thereby concentrating the high-temperature flue gas at the bottom and side walls of the cookware 9, increasing the utilization of the waste heat of the high-temperature flue gas and improving thermal efficiency.

[0048] The specific shape of the energy-concentrating pan holder is not limited; it can be circular, square, squarish-round, elliptical, or polygonal, and can be configured according to actual usage requirements. The specific number of impeller assemblies 5 installed in the cavity 3 is not limited; there can be one or more. To improve airflow stability, four impeller assemblies 5 are evenly arranged in the cavity 3.

[0049] To ensure that the high-temperature flue gas is more concentrated at the bottom and side walls of the cookware 9, the exhaust hood 21 extends in an upward-sloping direction. That is, the through-holes in the exhaust hood 21 extend in an upward-sloping direction, and the high-temperature flue gas is ejected in an upward-sloping direction after leaving the exhaust hood 21. In this embodiment, the angle between the extension direction of the exhaust hood 21 and the vertical plane is between 0° and 45°, which allows the high-temperature flue gas to be more likely to directly spray onto the bottom and side walls of the cookware 9, resulting in high waste heat utilization and improved combustion thermal efficiency.

[0050] In this embodiment, multiple air inlets 11 are evenly distributed on the upper energy-concentrating plate 1, and multiple air outlet hoods 21 are evenly distributed on the outer side of the lower energy-concentrating plate 2. The total area of ​​all air outlet hoods 21 is two to five times the total area of ​​all air inlets 11, and the flow velocity of the high-temperature flue gas leaving the air outlet hood 21 is less than 0.2 m / s. By reducing the flow velocity of the high-temperature flue gas leaving the air outlet hood 21, the problem of large-scale diffusion of the high-temperature flue gas due to excessive flow velocity can be avoided. The relatively lower flow velocity makes it easier to control the flow direction of the high-temperature flue gas, allowing more high-temperature flue gas to be collected at the bottom and side walls of the cookware 9, thereby increasing the amount of waste heat recovery.

[0051] The specific processing method of the vent 21 is not limited, but welding or stretching processes are preferred for high processing efficiency. Multiple vent 21s are arranged in a ring around the outer side of the energy-concentrating lower plate 2. One or more rings of vent 21 can be set along the vertical direction, depending on the application requirements. The specific shape of the vent 21 is not limited. In this embodiment, the vent 21 has a flat cross-section perpendicular to the extension direction. The length of a single vent 21 is in the range of 5mm to 25mm, and the width of a single vent 21 is not limited.

[0052] Based on the above structure, the upper surface of the energy-concentrating upper plate 1 has a lower inner edge and a higher outer edge, similar to a bowl shape. This shape of the energy-concentrating upper plate 1 is conducive to concentrating combustion heat energy, improving the heating capacity of the bottom of the pot 9, and reducing heat loss.

[0053] The specific method for machining the air inlet 11 on the energy-concentrating upper plate 1 is not limited, and can be, but is not limited to, using flanging or punching processes; the specific shape of the air inlet 11 is not limited, and can be, but is not limited to, various shapes such as round, square, and elliptical, as long as it is easy to machine; in order to improve the uniformity of force distribution, multiple air inlets 11 are evenly distributed in a ring shape along the circumference of the energy-concentrating upper plate 1; in order to improve the air intake efficiency, one or more rings of air inlets 11 can be set along the radial direction of the energy-concentrating upper plate 1.

[0054] The energy-concentrating upper plate 1 is provided with a central through hole, and a certain distance is formed between the central through hole and the outer peripheral edge of the burner 8. This distance forms a circumferential annular secondary air supply inlet, through which the secondary air required for combustion is supplied, resulting in more complete combustion.

[0055] To facilitate the introduction of secondary air, the distance between the lowest point of the energy-concentrating lower plate 2 and the tabletop is controlled between 5mm and 12mm. This also reduces heat wetting in the cavity 3, ensuring more complete combustion and improving combustion thermal efficiency. The distance between the lowest point of the energy-concentrating lower plate 2 and the tabletop should not be too large to avoid heat loss.

[0056] The specific method by which the lowest point of the energy-concentrating lower plate 2 forms a gap with the table surface is not limited. In this embodiment, three or more feet (not shown) are evenly provided below the energy-concentrating lower plate 2 to support it. The specific structure and processing method of the feet are not limited; they can be stretched convex hulls, which have low processing costs and high processing efficiency.

[0057] like Figure 4 As shown, the control method of the stove is as follows: the burner 8 is started, the thermoelectric potential E of the thermocouple 4 is obtained and fed back to the control unit 6; when the thermoelectric potential E is greater than the first set value for more than T1, it is determined that the stove is in continuous use, and the control unit 6 starts the impeller assembly 5. The impeller assembly 5 drives the high-temperature flue gas to enter the cavity 3 through the air inlet 11 and exit the cavity 3 through the air outlet hood 21. Among them, the first set value is 3mV ± 0.3mV, preferably 3mV; T1 is 60 seconds ± 30 seconds, preferably 60 seconds.

[0058] In this control method, the burner 8 first reaches the continuous use state, and then the impeller assembly 5 is started to drive the flow of high-temperature flue gas. This avoids insufficient high-temperature flue gas volume and ineffective operation of the impeller assembly 5 in the early stage of combustion, shortens the operation time of the impeller assembly 5, extends the service life of the impeller assembly 5, and saves energy and reduces consumption.

[0059] Based on the above steps, the control method of the stove further includes: acquiring the thermoelectric potential E of the thermocouple 4 and feeding it back to the control unit 6; when the thermoelectric potential E is less than a second set value for more than T2, it is determined that the stove is in the off state, and the control unit 6 closes the impeller assembly 5 after a delay of T3. The second set value is 1mV ± 0.1mV, preferably 1mV; T2 is 10 to 45 seconds, preferably 30 seconds; and T3 is 1 to 10 seconds, preferably 5 seconds.

[0060] This control method delays the shutdown of the impeller assembly 5 after the stove is turned off. When the user turns the stove on and off in a short period of time, the impeller assembly 5 remains in operation. This not only avoids the frequent starting and stopping of the impeller assembly 5, which would reduce its service life, but also improves the response speed of the impeller assembly 5 to the stove, thus enhancing the user experience.

[0061] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A pot-shaped heat exchanger, characterized in that, include: The energy-concentrating upper plate (1) has an air inlet (11) on it. The lower plate (2) is equipped with an air vent (21) on its outer side. The upper plate (1) and the lower plate (2) are fastened together to form a cavity (3). The air inlet (11) allows air outside the upper plate (1) to enter the cavity (3). The air vent (21) allows air in the cavity (3) to be discharged to the lower plate (2) and sprayed onto the bottom and side walls of the cookware. Thermocouple (4); An impeller assembly (5) is disposed in the cavity (3), the impeller assembly (5) being used to drive air outside the upper energy-concentrating plate (1) into the cavity (3), and / or to drive air in the cavity (3) out of the lower energy-concentrating plate (2); and, The control unit (6) is electrically connected to the thermocouple (4) and the impeller assembly (5). The control unit (6) can control the impeller assembly (5) to turn on when the stove is in continuous use or to delay turning off after the stove is turned off, based on the thermoelectric potential E of the thermocouple (4).

2. The energy-concentrating pot rack according to claim 1, characterized in that, The energy-concentrating pan rack also includes a baffle (7) disposed in the cavity (3), the baffle (7) dividing the cavity (3) into an air inlet area (31) and an air outlet area (32), the air inlet of the impeller assembly (5) is connected to the air inlet area (31), and the air outlet of the impeller assembly (5) is connected to the air outlet area (32).

3. The energy-concentrating pot rack according to claim 1, characterized in that, The through hole in the vent hood (21) extends in an upward inclined direction.

4. The energy-concentrating pan rack according to any one of claims 1 to 3, characterized in that, The upper energy-concentrating plate (1) is provided with a plurality of air inlets (11) evenly, and the lower energy-concentrating plate (2) is provided with a plurality of air outlet hoods (21) evenly on its outer side. The total area of ​​all the air outlet hoods (21) is two to five times the total area of ​​all the air inlets (11).

5. A stove, including a burner (8), characterized in that, It also includes a pot-shaped heat exchanger as described in any one of claims 1 to 4, wherein the burner (8) is located in the middle of the pot-shaped heat exchanger.

6. The stove according to claim 5, characterized in that, Thermocouple (4) is placed within the thermal coverage area of ​​the burner (8).

7. A stove control method, based on the stove as described in claim 5 or 6, characterized in that, The stove control method includes: Start the burner (8); Obtain the thermoelectric potential E of thermocouple (4); When the thermoelectric potential E is greater than the first set value for more than T1, the impeller assembly (5) is started, driving the high-temperature flue gas to enter the cavity (3) through the air inlet (11) and exit the cavity (3) through the air outlet hood (21).

8. The stove control method according to claim 7, characterized in that, The first setting value is 3mV ± 0.3mV; and / or, T1 is 60 seconds ± 30 seconds.

9. The stove control method according to claim 7, characterized in that, The stove control method also includes: Obtain the thermoelectric potential E of the thermocouple (4); When the thermoelectric potential E is less than the second set value for more than T2, the impeller assembly (5) is shut down after a delay of T3.

10. The stove control method according to claim 9, characterized in that, The second setting value is 1mV ± 0.1mV; and / or, T2 is 10 to 45 seconds; and / or, T3 ranges from 1 second to 10 seconds.

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