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

Abstract

The present application relates to the technical field of kitchen utensils, and discloses a concentrated energy pot rack, a gas stove and a control method of the gas stove. The concentrated energy pot rack comprises a support assembly, an upper concentrated energy ring, a lower concentrated energy ring and an outer concentrated energy ring connected with the support assembly respectively. The lower concentrated energy ring is arranged below the upper concentrated energy ring and forms a first flow channel with the upper concentrated energy ring. The outer concentrated energy ring is arranged outside the upper concentrated energy ring and forms a second flow channel with the upper concentrated energy ring. The highest point of the outer concentrated energy ring is not lower than the highest point of the upper concentrated energy ring, and the distance H between the two highest points is adjustable. In addition, the lower surface of the outer concentrated energy ring extends upward in a radial direction from outside to inside, and the size of the included angle α between the lower surface and the horizontal plane is adjustable. The above-mentioned concentrated energy pot rack can smoothly supplement secondary air and make part of the high-temperature flue gas backflow to improve the thermal efficiency. The amount of the secondary air can be adjusted to match the current combustion state, thereby further improving the thermal efficiency of combustion.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliances technology, and in particular to a high-efficiency pot rack, a gas stove, and a control method for the gas stove. Background Technology

[0002] Gas stoves are a widely used kitchen appliance, and with the continuous development of society, high combustion thermal efficiency has become one of the development directions for gas stoves.

[0003] The heat energy generated by the combustion of gas stoves is partly used to heat the cookware, and partly used to heat the surrounding air through thermal radiation, which then dissipates outwards, resulting in heat loss. Therefore, in order to achieve higher thermal efficiency, related technologies have developed pot supports with energy-concentrating plates. These plates form a physical barrier between the flame and the outside air, reducing the loss of high-temperature flue gas and thus minimizing heat loss.

[0004] The configuration of the energy-concentrating plate affects the supply of secondary air. Insufficient secondary air leads to incomplete combustion of the gas, reducing combustion thermal efficiency. However, excessive secondary air requires the low-temperature secondary air to absorb heat first, which can also result in low combustion thermal efficiency and unstable combustion.

[0005] Therefore, there is an urgent need for an energy-efficient pot holder, gas stove, and gas stove control method to solve the above-mentioned technical problems. Summary of the Invention

[0006] One objective of this invention is to provide an energy-concentrating boiler frame that can smoothly replenish secondary air and allow some high-temperature flue gas to recirculate. The recirculation of high-temperature flue gas can preheat the secondary air and further enhance combustion, thereby improving thermal efficiency. The amount of secondary air entering can be adjusted to match the current combustion state, further improving the thermal efficiency of combustion.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] The energy-concentrating pot frame includes a support assembly and an upper energy-concentrating ring, a lower energy-concentrating ring, and an outer energy-concentrating ring respectively connected to the support assembly. The lower energy-concentrating ring is disposed below the upper energy-concentrating ring and forms a first flow channel with the upper energy-concentrating ring. The outer energy-concentrating ring is arranged around the outside of the upper energy-concentrating ring and forms a second flow channel with the upper energy-concentrating ring. Wherein:

[0009] The highest point of the outer focusing ring is not lower than the highest point of the upper focusing ring, and the distance H between the two highest points is adjustable; and / or

[0010] The lower surface of the outer energy-concentrating ring extends upward at an angle in the radial direction from the outside to the inside, and the angle α between the lower surface and the horizontal plane is adjustable.

[0011] As an optional solution, the outer energy-concentrating ring includes at least two arc-shaped energy-concentrating elements, and the at least two arc-shaped energy-concentrating elements are arranged at circumferential intervals.

[0012] The energy-concentrating pot frame also includes a corresponding number of driving components. Each driving component is disposed between two adjacent arc-shaped energy-concentrating elements. Each driving component can drive one arc-shaped energy-concentrating element to rise and / or rotate, so as to adjust the distance H and the included angle α accordingly.

[0013] As an optional solution, the driving component includes:

[0014] chassis;

[0015] An electric linear actuator, comprising a main body and a push rod, wherein one of the main body and the push rod is connected to the housing, and the other of the two is connected to the bracket assembly;

[0016] A rotation drive source is connected to the housing, and the output end of the rotation drive source is connected to one of the adjacent arc-shaped energy-concentrating elements via a rotating shaft.

[0017] As an optional solution, the drive assembly further includes a support shaft, which and the rotating shaft are respectively disposed on both sides of the housing. One end of the support shaft is connected to the housing, and the other end is movably connected to another arc-shaped energy-concentrating element adjacent to the drive assembly.

[0018] As an optional solution, the energy-concentrating boiler rack also includes a flue gas analysis tube, which is disposed at the upper end of the second flow channel and is used to detect the content of a first target gas and a second target gas at a position above the energy-concentrating boiler rack. The drive component is communicatively connected to the flue gas analysis tube and adjusts the distance H and / or the included angle α according to the detection result of the flue gas analysis tube.

[0019] As an alternative, the width of the second flow channel gradually decreases along the axial direction and from top to bottom; and / or

[0020] The first flow channel extends obliquely upward in a radial direction from the outside to the inside.

[0021] As an alternative, the lowest point of the lower energy-concentrating ring is spaced apart from the bottom surface of the support assembly in the height direction, so that a third flow channel is formed below the lower energy-concentrating ring.

[0022] As an alternative, the upper focusing ring is a hollow structure; and / or the lower focusing ring is a hollow structure; and / or the outer focusing ring is a hollow structure.

[0023] Another objective of this invention is to provide a gas stove that, by employing the aforementioned energy-concentrating pot rack, achieves high thermal efficiency during combustion and low concentrations of CO and NO in the flue gas.

[0024] To achieve this objective, the present invention adopts the following technical solution:

[0025] A gas stove includes a frame, a burner, and a pot holder, wherein the pot holder is supported on the frame and is arranged around the outer periphery of the burner.

[0026] Another objective of this invention is to propose a control method for a gas stove that can adjust the amount of secondary air entering the stove according to the content of the target gas in the high-temperature flue gas above the energy-concentrating pot rack, so as to ensure that the amount of secondary air matches the current combustion state, thereby improving the thermal efficiency of combustion and reducing the concentration of exhaust gases such as CO and NO in the flue gas.

[0027] To achieve this objective, the present invention adopts the following technical solution:

[0028] The control method for gas stoves includes the following steps:

[0029] Step S30: Obtain the content of the first target gas and the content of the second target gas at the position above the energy-concentrating pot frame, and adjust the distance H and / or the included angle α according to the content of the first target gas and the content of the second target gas.

[0030] As an optional solution, step S30 involves adjusting the distance H and the included angle α as follows:

[0031] Step S31: Determine whether the content of the first target gas is greater than the minimum value of the first preset range, and whether the content of the second target gas is greater than the minimum value of the second preset range. If not, make the current distance H > Hmin and α = αmin. If yes, proceed to the next step.

[0032] Step S32: Determine whether the content of the first target gas is within the first preset range and whether the content of the second target gas is within the second preset range. If yes, keep the current distance H and the included angle α unchanged. If no, decrease the current distance H and / or increase the current included angle α.

[0033] As an optional approach, prior to step S30, the following steps are also included:

[0034] Step S10: Turn on the gas stove;

[0035] Step S20: Determine whether the current distance H = Hmin and the included angle α = αmin. If yes, proceed to step S30. If no, adjust the distance H to Hmin and the included angle α to αmin before proceeding to step S30.

[0036] The beneficial effects of this invention are:

[0037] The energy-concentrating pot rack of the present invention:

[0038] (1) When in use, external air can enter the interior of the energy-concentrating boiler frame through the first flow channel, thereby supplementing the combustion of gas with secondary air. The upper and lower energy-concentrating rings can preheat the secondary air, thereby ensuring the stability of combustion and improving the thermal efficiency of combustion. The high-temperature flue gas generated by combustion flows outward from the space between the energy-concentrating boiler frame and the bottom surface of the pot. A portion of the high-temperature flue gas will flow into the second flow channel under the obstruction of the outer energy-concentrating ring, and enter the first flow channel under the drive of the secondary air flow, thus forming a high-temperature flue gas recirculation. The recirculated high-temperature flue gas can not only preheat the secondary air to improve the stability and thermal efficiency of combustion, but also further burn after entering the energy-concentrating boiler frame, thereby further improving the thermal efficiency of combustion and reducing the concentration of CO and NO and other exhaust gases in the final exhaust gas. By adjusting the distance H between the highest point of the outer concentrating ring and the highest point of the upper concentrating ring, the ease with which high-temperature flue gas exits the concentrating boiler frame can be adjusted, thereby adjusting the ease with which secondary air enters the concentrating boiler frame. By adjusting the tilt angle of the lower surface of the outer concentrating ring, the ease with which secondary air enters the concentrating boiler frame can also be adjusted, thereby ensuring that the amount of secondary air replenishment can match the current combustion state, ensuring that the amount of secondary air entering is appropriate, and thus improving the thermal efficiency of combustion.

[0039] (2) By detecting the content of the first target gas and the second target gas above the energy-concentrating boiler frame through the flue gas analysis tube, the current combustion state can be known. By setting the drive component to communicate with the flue gas analysis tube, the drive component can adjust the amount of secondary air replenishment according to the combustion state, thereby improving the thermal efficiency of combustion.

[0040] (3) By gradually reducing the cross-sectional area of ​​the second flow channel, the pressure at the inlet end of the second flow channel is kept low, which is conducive to the recirculation of high-temperature flue gas and thus further improves the thermal efficiency of combustion.

[0041] (4) Since high-temperature flue gas has an upward tendency, by setting the first flow channel to extend upward at an angle, it is beneficial for high-temperature flue gas to enter the first flow channel and form a backflow, thereby further improving the thermal efficiency of combustion.

[0042] (5) By forming a third flow channel below the lower energy-concentrating ring, not only is there an increased channel for replenishing secondary air to the gasifier inside the energy-concentrating ring, but the secondary air from the first flow channel and the third flow channel can respectively correspond to the top and root of the flame, that is, replenish secondary air in all directions, thereby further ensuring the completeness of combustion and improving the thermal efficiency of combustion.

[0043] The gas stove of the present invention, by adopting the above-mentioned energy-concentrating pot rack, has high combustion thermal efficiency and low concentration of exhaust gases such as CO and NO in the flue gas.

[0044] The control method for the gas stove of the present invention obtains and analyzes the contents of the first target gas and the second target gas above the energy-concentrating pot rack to know the current combustion state. Based on the combustion state, the distance H and the included angle α are adjusted to regulate the amount of secondary air supply, ensuring that the secondary air supply matches the current combustion state, thereby improving the thermal efficiency of combustion. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the structure of the energy-concentrating pot frame provided in a specific embodiment of the present invention;

[0046] Figure 2 This is a schematic diagram of the airflow state at the energy-concentrating boiler frame provided in a specific embodiment of the present invention;

[0047] Figure 3 This is a cross-sectional view of the energy-concentrating pot frame provided in a specific embodiment of the present invention;

[0048] Figure 4 This is a top view of a partial structure of the energy-concentrating boiler frame provided in a specific embodiment of the present invention;

[0049] Figure 5 This is a schematic diagram of the structure of the arc-shaped energy-concentrating component provided in a specific embodiment of the present invention;

[0050] Figure 6 This is a schematic diagram of the structure of the driving component provided in a specific embodiment of the present invention;

[0051] Figure 7 This is a schematic diagram of the energy-concentrating pot frame provided in a specific embodiment of the present invention when the outer energy-concentrating ring is at its lowest point;

[0052] Figure 8 This is a schematic diagram of the energy-concentrating pot frame provided in a specific embodiment of the present invention when the outer energy-concentrating ring is at its highest point;

[0053] Figure 9 This is a schematic diagram showing the energy-concentrating pot frame provided in a specific embodiment of the present invention with the angle α between the lower surface of the outer energy-concentrating ring and the horizontal plane at its minimum value;

[0054] Figure 10 This is a schematic diagram showing the energy-concentrating pot frame provided in a specific embodiment of the present invention with the angle α between the lower surface of the outer energy-concentrating ring and the horizontal plane at its maximum value;

[0055] Figure 11 This is a flowchart of a control method for a gas stove provided in a specific embodiment of the present invention.

[0056] In the picture:

[0057] 10. Support assembly; 11. Foot piece; 111. Lower support leg; 1111. Bottom surface; 112. Connecting beam; 113. Upper support leg;

[0058] 20. Upper energy-concentrating ring; 21. First arc-shaped guide surface; 22. First lower sidewall; 23. Outer sidewall;

[0059] 30. Lower energy-concentrating ring; 31. Second arc-shaped guide surface; 32. Upper sidewall;

[0060] 40. Outer concentrating ring; 41. Arc-shaped concentrating element; 411. Second lower sidewall; 412. Arc-shaped groove; 413. Inner sidewall;

[0061] 51. First flow channel; 52. Second flow channel; 53. Third flow channel;

[0062] 60. Drive assembly; 61. Housing; 62. Electric actuator; 63. Rotating shaft; 64. Support shaft;

[0063] 70. Flue gas analysis tube. Detailed Implementation

[0064] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention and not the entire structure.

[0065] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0066] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0067] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0068] This embodiment provides a high-efficiency pot holder and a gas stove, wherein the gas stove includes a frame, a burner, and a high-efficiency pot holder. The burner is supported on the frame, and its air inlet is connected to an external gas source through a nozzle structure. When the gas stove is working, the nozzle injects gas into the burner and simultaneously injects primary air into the burner. The primary air and gas mix inside the burner and are discharged from the burner's flame holes for combustion. The high-efficiency pot holder is supported on the frame and is arranged around the outer periphery of the burner. The high-efficiency pot holder is used to support the pot.

[0069] Existing energy-concentrating boiler supports typically feature an energy-concentrating plate, but this plate can affect the supply of secondary air. Insufficient secondary air can lead to incomplete combustion of the gas, reducing combustion thermal efficiency. However, excessive secondary air, due to its low temperature, requires the secondary air to absorb heat first, resulting in low combustion thermal efficiency and unstable combustion.

[0070] In this regard, such as Figures 1-2 As shown, the energy-concentrating pot frame includes a support assembly 10, an upper energy-concentrating ring 20, a lower energy-concentrating ring 30, and an outer energy-concentrating ring 40, all of which are connected to the support assembly 10. The lower energy-concentrating ring 30 is positioned below the upper energy-concentrating ring 20, forming a first flow channel 51 between them. The outer energy-concentrating ring 40 is arranged around the outer side of the upper energy-concentrating ring 20, forming a second flow channel 52 between them. The highest point of the outer energy-concentrating ring 40 is not lower than the highest point of the upper energy-concentrating ring 20, and the distance H between the two highest points is adjustable. The lower surface of the outer energy-concentrating ring 40 extends upwards at an angle in the radial direction from the outside in, and the angle α between the lower surface and the horizontal plane is adjustable.

[0071] Figure 2The dashed arrows indicate the flow direction of secondary air, while the solid arrows indicate the flow direction of high-temperature flue gas. During combustion, secondary air outside the energy-concentrating boiler rack can enter the interior of the energy-concentrating boiler rack through the first flow channel 51, thus supplementing the combustion of the gas. The upper energy-concentrating ring 20 and the lower energy-concentrating ring 30 can preheat the secondary air, thereby ensuring combustion stability and improving combustion thermal efficiency. The high-temperature flue gas generated by combustion flows outward from the space between the energy-concentrating boiler rack and the bottom surface of the pot. A portion of the high-temperature flue gas flows into the second flow channel 52 under the obstruction of the outer energy-concentrating ring 40, and enters the first flow channel 51 under the influence of the secondary air flow, thus forming a high-temperature flue gas recirculation. The recirculated high-temperature flue gas can not only preheat the secondary air to improve combustion stability and thermal efficiency, but also further burn after entering the energy-concentrating boiler rack, thereby further improving combustion thermal efficiency and reducing the concentration of CO and NO in the final exhaust gas. Furthermore, by adjusting the distance H between the highest point of the outer concentrating ring 40 and the highest point of the upper concentrating ring 20, the ease with which high-temperature flue gas exits the concentrating boiler frame can be adjusted, thereby adjusting the ease with which secondary air enters the concentrating boiler frame. By adjusting the tilt angle of the lower surface of the outer concentrating ring 40, the ease with which secondary air enters the concentrating boiler frame can also be adjusted, thereby ensuring that the amount of secondary air replenishment can match the current combustion state, ensuring that the amount of secondary air entering is appropriate, and thus improving the thermal efficiency of combustion.

[0072] It should be noted that in this embodiment, the combustion state specifically refers to the degree of complete combustion of the gas during the combustion process, which corresponds to the amount of secondary air replenishment.

[0073] In this embodiment, the upper energy-concentrating ring 20, the lower energy-concentrating ring 30, and the outer energy-concentrating ring 40 are all hollow structures, that is, the upper energy-concentrating ring 20, the lower energy-concentrating ring 30, and the outer energy-concentrating ring 40 can all form a closed cavity. The air in the closed cavity reduces the rate at which heat is further dissipated to the outside air, thus achieving a heat preservation effect, which in turn helps to improve the thermal efficiency of the combustion stove.

[0074] like Figure 2 As shown, the upper end of the upper energy-concentrating ring 20 is constructed as a first arc-shaped guide surface 21. The first arc-shaped guide surface 21 can reduce the resistance to the discharge of high-temperature flue gas inside the energy-concentrating boiler frame, ensuring smooth flow of high-temperature flue gas. Since high-temperature flue gas has an upward flow tendency, in this embodiment, the first arc-shaped guide surface 21 extends to the upper end of the second flow channel 52. This arrangement is beneficial for guiding high-temperature flue gas into the second flow channel 52, ensuring sufficient high-temperature flue gas recirculation during combustion.

[0075] like Figure 2As shown, the width of the second flow channel 52 gradually decreases along the axial direction from top to bottom. This arrangement keeps the pressure at the inlet end of the second flow channel 52 relatively low, thereby facilitating the entry of a sufficient amount of high-temperature flue gas into the second flow channel 52, increasing the amount of high-temperature flue gas returning, and further improving the thermal efficiency of combustion. In this embodiment, the second flow channel 52 is formed between the outer wall 23 of the upper energy-concentrating ring 20 and the inner wall 413 of the outer energy-concentrating ring 40. Optionally, the inner wall 413 is constructed as a flat surface. Since the first arc-shaped guide surface 21 extends to connect with the inner wall 413, the second flow channel 52 naturally forms a shape with a gradually decreasing width.

[0076] like Figure 2 As shown, the first flow channel 51 extends obliquely upward in a radial direction from the outside to the inside. Since high-temperature flue gas tends to move upward, by setting the first flow channel 51 to extend obliquely upward, a larger proportion of the high-temperature flue gas flowing out of the second flow channel 52 enters the first flow channel 51 to form a recirculation, thereby further improving the thermal efficiency of combustion. In this embodiment, the lower sidewall of the upper energy-concentrating ring 20 is a first lower sidewall 22, and the first flow channel 51 is formed between the first lower sidewall 22 and the upper sidewall 32 of the lower energy-concentrating ring 30. Both the first lower sidewall 22 and the upper sidewall 32 are set to extend obliquely upward in a radial direction from the outside to the inside, thus ensuring that the first flow channel 51 extends obliquely upward.

[0077] like Figure 2 and Figure 3 As shown, the lowest point of the lower energy-concentrating ring 30 and the bottom surface 1111 of the support assembly 10 are spaced apart in the height direction, so that a third flow channel 53 is formed below the lower energy-concentrating ring 30. By setting the third flow channel 53, not only are there more channels for replenishing secondary air to the burner inside the energy-concentrating boiler frame, but the secondary air entering the energy-concentrating boiler frame from the first flow channel 51 and the third flow channel 53 can respectively correspond to the top and root of the flame, that is, replenish secondary air from all directions, thereby further ensuring the completeness of combustion and improving the thermal efficiency of combustion.

[0078] like Figure 1 and Figure 3As shown, the support assembly 10 includes at least three feet 11, which are spaced apart circumferentially. The upper energy-concentrating ring 20 is connected to each foot 11, the lower energy-concentrating ring 30 is connected to each foot 11, and the outer energy-concentrating ring 40 is indirectly connected to each foot 11 through other structures (see description below). This achieves both the fixation of the three energy-concentrating rings and makes the entire energy-concentrating pot frame a single unit. Optionally, in this embodiment, the support assembly 10 includes four feet 11. In other embodiments, the support assembly 10 may also have three, five, or more feet 11; no specific limitation is made here. Optionally, both the upper energy-concentrating ring 20 and the lower energy-concentrating ring 30 can be connected to the feet 11 by welding, fasteners, or other methods; no specific limitation is made here.

[0079] In this embodiment, the foot piece 11 forms a C-shaped space with its opening facing outwards. The upper energy-concentrating ring 20 and the lower energy-concentrating ring 30 are both installed within this C-shaped space. This arrangement allows the foot piece 11 to protect each energy-concentrating ring, reducing the risk of damage from impacts with external structures. Specifically, the foot piece 11 includes a lower support leg 111, a connecting beam 112, and an upper support leg 113. The connecting beam 112 extends vertically, and the lower support leg 111 and upper support leg 113 are respectively connected to the upper and lower ends of the connecting beam 112. The lower support leg 111 extends horizontally outwards from the lower end of the connecting beam 112, and part of the upper support leg 113 extends outwards from the upper end of the connecting beam 112, thus forming a C-shaped space. The lower support leg 111 is supported on the frame, and its lower surface is the bottom surface 1111 of the support assembly 10. The upper support leg 113 is used to support the cookware, and both the upper energy-concentrating ring 20 and the lower energy-concentrating ring 30 are connected to the connecting beam 112.

[0080] To achieve the adjustment of the tilt angle and height of the lower surface of the outer concentrating coil 40, in this embodiment, as follows: Figure 1 and Figure 2 As shown, the outer concentrating ring 40 includes at least two arc-shaped energy concentrating elements 41, which are spaced apart circumferentially. The lower sidewall of the arc-shaped energy concentrating element 41 is a second lower sidewall 411, and the lower surfaces of multiple second lower sidewalls 411 constitute the lower surface of the outer concentrating ring 40. The concentrating pot frame also includes a corresponding number of driving components 60, each driving component 60 being disposed between two adjacent arc-shaped energy concentrating elements 41. Each driving component 60 can drive one arc-shaped energy concentrating element 41 to rise and fall, thereby adjusting the distance H between the highest point of the upper concentrating ring 20 and the highest point of the lower concentrating ring 30. The driving component 60 can also drive the corresponding arc-shaped energy concentrating element 41 to rotate, thereby adjusting the angle α between the lower surface of the outer concentrating ring 40 and the horizontal plane. In this embodiment, by setting the outer concentrating ring 40 to be composed of multiple arc-shaped energy concentrating elements 41 and configuring a corresponding number of driving components 60, the tilt angle of the lower surface of the outer concentrating ring 40 at various circumferential positions can be adjusted synchronously with the same trend.

[0081] It should be noted that when the outer concentrating ring 40 rotates, the tilt angle at various positions along the circumference of its lower surface may be different, but the trend of the tilt angle at each position is consistent during the rotation. Therefore, in the actual process of controlling the quantitative rotation of the arc concentrating element 41, the included angle between the lower sidewall of the arc concentrating element 41 and the end connected to the drive assembly 60 that drives its rotation can be used as a reference.

[0082] In this embodiment, as Figure 1 As shown, the number of arc-shaped energy concentrators 41 and the number of drive assemblies 60 are the same as the number of foot pieces 11, and each drive assembly 60 is connected to one foot piece 11. Each arc-shaped energy concentrator 41 is disposed between two adjacent foot pieces 11, and is indirectly connected to the bracket assembly 10 through the drive assembly 60.

[0083] Specifically, such as Figures 4-6 As shown, the drive assembly 60 includes a housing 61, an electric actuator 62, and a rotation drive source. The electric actuator 62 includes a main body and a push rod. One of the main body and the push rod is connected to the housing 61, and the other is connected to the bracket assembly 10. The rotation drive source is connected to the housing 61, and the output end of the rotation drive source is connected to an adjacent arc-shaped energy-concentrating element 41 via a rotating shaft 63.

[0084] Specifically, such as Figure 7 and Figure 8 As shown, the push rod portion of the electric actuator 62 extends vertically. When the electric actuator 62 outputs linear motion, it drives the corresponding arc-shaped energy-concentrating element 41 to rise and fall, thereby adjusting the distance H between the highest point of the outer energy-concentrating ring 40 and the highest point of the upper energy-concentrating ring 20. Figure 9 and Figure 10 As shown, when the rotary drive source outputs rotation, it can drive the corresponding arc-shaped energy-concentrating element 41 to rotate, thereby adjusting the angle α between the lower surface of the outer energy-concentrating ring 40 and the horizontal plane. Specifically, the rotary drive source can be an electric motor. Optionally, the rotating shaft 63 and the arc-shaped energy-concentrating element 41 can be fixed by welding, plugging, or other methods.

[0085] like Figures 4-6 As shown, the drive assembly 60 also includes a support shaft 64. The support shaft 64 and the rotating shaft 63 are respectively disposed on both sides of the housing 61. One end of the support shaft 64 is connected to the housing 61, and the other end is movably connected to another arc-shaped energy-concentrating element 41 adjacent to the drive assembly 60. That is, for each arc-shaped energy-concentrating element 41, its first end is connected to one drive assembly 60 through the rotating shaft 63, and its second end is supported on the support shaft 64 of another drive assembly 60, thereby ensuring the stability of the arc-shaped energy-concentrating element 41.

[0086] In this embodiment, the rotating shaft 63 is an arc shaft. As the first end of the arc-shaped energy concentrator 41 rotates with the arc shaft connected to it, the movement trajectory of the second end is also an arc. To ensure that the second end of the arc-shaped energy concentrator 41 is supported, an arc groove 412 is provided at the second end of the arc-shaped energy concentrator 41. The support shaft 64 of the drive assembly 60 adjacent to the arc groove 412 is inserted into the arc groove 412. When the first end of the arc-shaped energy concentrator 41 rotates with the arc shaft, the support shaft 64 at the second end slides within the arc groove 412 at the second end.

[0087] like Figure 3 As shown, the energy-concentrating pot frame also includes a flue gas analysis tube 70, which is located at the upper end of the second flow channel 52. The flue gas analysis tube 70 is used to detect the content of a first target gas and a second target gas at a position above the energy-concentrating pot frame. The drive assembly 60 is communicatively connected to the flue gas analysis tube 70. The drive assembly 60 can drive the outer energy-concentrating ring 40 to move according to the content of the target gas detected by the flue gas analysis tube 70, thereby adjusting the distance H and the included angle α. By detecting the content of the first and second target gases at a position above the energy-concentrating pot frame through the flue gas analysis tube 70, the current combustion state can be determined. That is, the drive assembly 60 adjusts the amount of secondary air replenishment according to the combustion state, thereby improving the thermal efficiency of combustion. In this embodiment, the flue gas analysis tube 70 can be fixed at the outer wall 23 of the upper energy-concentrating ring 20 or at the inner wall 413 of the arc-shaped energy-concentrating component 41; no specific limitation is made here.

[0088] In this embodiment, the first target gas is CO, and the second target gas is NO.

[0089] When the flue gas analyzer tube 70 detects that the content of the first target gas is within the first preset range and the content of the second target gas is within the second preset range, it indicates that the combustion of the gas is adequate and the thermal efficiency of the gas combustion is high. At this time, the drive component 60 does not drive the outer energy-concentrating ring 40.

[0090] When the flue gas analyzer 70 detects that the CO content is less than the minimum of the first preset range, and / or the NO content is less than the minimum of the second preset range, it indicates that the secondary air supply is excessive. Excessive low-temperature secondary air absorbs more heat energy, resulting in lower combustion thermal efficiency. At this time, the drive assembly 60 drives the outer concentrating ring 40 to increase the distance H and / or decrease the included angle α to reduce the amount of secondary air supplied. Increasing H reduces the obstruction effect of the outer concentrating ring 40 on the flue gas, increases the resistance to high-temperature flue gas discharge, and keeps the internal pressure of the concentrating ring at a higher level, thereby reducing the amount of secondary air entering. Decreasing the included angle α reduces the guiding effect on the secondary air entering the first flow channel 51, and also reduces the amount of low-temperature secondary air entering.

[0091] When the flue gas analyzer 70 detects that the CO content is greater than the maximum value of the first preset range, and / or the NO content is greater than the maximum value of the second preset range, it indicates that the secondary air supply is insufficient, the combustion components are inadequate, and the combustion thermal efficiency is low. At this time, the drive assembly 60 can drive the outer concentrating ring 40 to operate, reducing the distance H and / or increasing the included angle α. Reducing the distance H can reduce the resistance of the outer concentrating ring 40 to the high-temperature flue gas, reduce the pressure near the burner, thereby increasing the secondary air supply. Increasing the included angle α increases the guiding effect of the outer concentrating ring 40 on the secondary air, which can also increase the secondary air supply.

[0092] Optionally, the first preset range can be 0.020%-0.045%, and the second preset range can be 0.005%-0.010%. In other embodiments, the first and second preset ranges can be flexibly adjusted as needed.

[0093] like Figure 11 As shown, this embodiment also provides a control method for a gas stove, which uses the above-mentioned gas stove and includes the following steps:

[0094] Step S10: Turn on the gas stove;

[0095] Step S20: Determine whether the current distance H = Hmin and the included angle α = αmin. If yes, proceed to step S30. If no, adjust the distance H to Hmin and the included angle α to αmin before proceeding to step S30.

[0096] Step S30: Obtain the content of the first target gas and the content of the second target gas at the position above the energy-concentrating pot frame, and adjust the distance H and / or the included angle α according to the content of the first target gas and the content of the second target gas.

[0097] Step S40, repeat step S30 until the gas stove is turned off.

[0098] The control method for the gas stove in this embodiment obtains and analyzes the content of the first target gas and the content of the second target gas above the energy-concentrating pot rack to know the current combustion state. Based on the combustion state, the distance H and / or the included angle α are adjusted to regulate the amount of secondary air supply, ensuring that the secondary air supply matches the current combustion state, thereby improving the thermal efficiency of combustion.

[0099] Furthermore, the purpose of step S20 is to ensure that the distance H and the included angle α of the outer converging ring 40 are both in their initial positions, facilitating subsequent adjustments. It should be noted that... Figure 11The diagram only illustrates one control flow, which first determines whether the current distance H is less than Hmin, and then determines whether the current included angle α is the minimum value αmin. In other embodiments, it is also possible to first determine whether the current included angle α is the minimum value αmin, and then determine whether the current distance H is less than Hmin. In yet another embodiment, it is also possible to simultaneously determine whether the current distance H is less than Hmin and whether the current included angle α is the minimum value αmin. As long as the current distance H = Hmin and the current included angle α = αmin are guaranteed, the process proceeds to step S30.

[0100] Specifically, the method for adjusting the distance H and the included angle α in step S30 is as follows:

[0101] Step S31: Determine whether the content of the first target gas is greater than the minimum value of the first preset range, and whether the content of the second target gas is greater than the minimum value of the second preset range.

[0102] If the judgment result is "No", it means that the content of the first target gas is less than the minimum value of the first preset range, and / or the content of the second target gas is less than the minimum value of the second preset range. This indicates that the secondary air supply is too large. Excessive low-temperature secondary air will absorb more heat energy, resulting in lower combustion thermal efficiency. At this time, the drive component 60 drives the outer concentrating coil 40 to operate, making H > Hmin and keeping α at its minimum, thereby reducing the secondary air supply. It should be noted that the specific amount to which H increases can be preset or calculated based on the specific amount of the target gas; no specific limitation is made here.

[0103] If the judgment result is "yes", then proceed to step S32 to determine whether the content of the first target gas is within the first preset range and whether the content of the second target gas is within the second preset range.

[0104] If the result of step S32 is "yes", it means that the current secondary air volume is appropriate, and the current distance H and included angle α can be kept unchanged.

[0105] If the result of step S32 is "No", it means that the CO content is greater than the maximum value of the first preset range, and / or the NO content is greater than the maximum value of the second preset range. This indicates that the secondary air supply is insufficient. Therefore, the current distance H is decreased, and / or the current angle α is increased, thereby increasing the secondary air supply to ensure complete combustion. In some embodiments, the specific values ​​for decreasing the distance H and increasing the angle α can be set according to the content of the target gas. In some embodiments, after the result of step S32 is "No", the current distance H can be directly set to Hmin, and the angle α can be set to αmax, where αmax is the maximum value of α. This setting can increase the secondary air supply most quickly.

[0106] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, based on the concept of the present invention, there will be changes in specific implementation methods and application scope. The content of this specification should not be construed as a limitation of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the claims of the present invention.

Claims

1. A pot holder with energy-concentrating properties, characterized in that: The device includes a support assembly (10) and an upper energy focusing ring (20), a lower energy focusing ring (30), and an outer energy focusing ring (40) respectively connected to the support assembly (10). The lower energy focusing ring (30) is disposed below the upper energy focusing ring (20) and forms a first flow channel (51) with the upper energy focusing ring (20). The outer energy focusing ring (40) is arranged around the outside of the upper energy focusing ring (20) and forms a second flow channel (52) with the upper energy focusing ring (20). The outer energy focusing ring (40) includes at least two arc-shaped energy focusing elements (41), which are spaced apart circumferentially. The highest point of the outer focusing ring (40) is not lower than the highest point of the upper focusing ring (20), and the distance H between the two highest points is adjustable; and / or The lower surface of the outer energy-concentrating ring (40) extends upward at an angle in the radial direction from the outside to the inside, and the angle α between the lower surface and the horizontal plane is adjustable. The energy-concentrating pot frame also includes a corresponding number of drive components (60), each drive component (60) being disposed between two adjacent arc-shaped energy-concentrating elements (41), each drive component (60) being able to drive one arc-shaped energy-concentrating element (41) to rise and / or rotate, so as to adjust the distance H and the included angle α accordingly.

2. The energy-concentrating pot frame as described in claim 1, characterized in that, The driving component (60) includes: Casing (61); Electric actuator (62), the electric actuator (62) includes a main body and an actuator part, one of the main body and the actuator part is connected to the housing (61), and the other of the two is connected to the bracket assembly (10); A rotation drive source is connected to the housing (61), and the output end of the rotation drive source is connected to one of the adjacent arc energy-concentrating elements (41) via a rotating shaft (63).

3. The energy-concentrating pot frame as described in claim 2, characterized in that, The drive assembly (60) further includes a support shaft (64), the support shaft (64) and the rotating shaft (63) are respectively disposed on both sides of the housing (61), one end of the support shaft (64) is connected to the housing (61), and the other end is movably connected to another arc-shaped energy-concentrating element (41) adjacent to the drive assembly (60).

4. The energy-concentrating pot frame as described in claim 1, characterized in that, The energy-concentrating boiler rack also includes a flue gas analysis tube (70), which is located at the upper end of the second flow channel (52) and is used to detect the content of the first target gas and the content of the second target gas at the position above the energy-concentrating boiler rack. The drive assembly (60) is communicatively connected to the flue gas analysis tube (70) and can adjust the distance H and / or the included angle α according to the detection result of the flue gas analysis tube (70).

5. The energy-concentrating pot frame as described in any one of claims 1-4, characterized in that, Along the axial direction and from top to bottom, the width of the second flow channel (52) gradually decreases; and / or The first flow channel (51) extends obliquely upward in a radial direction from the outside to the inside.

6. The energy-concentrating pot frame as described in any one of claims 1-4, characterized in that, The lowest point of the lower energy-concentrating ring (30) is spaced apart from the bottom surface (1111) of the support assembly (10) in the height direction, so that a third flow channel (53) is formed below the lower energy-concentrating ring (30).

7. The energy-concentrating pot frame as described in any one of claims 1-4, characterized in that, The upper energy-concentrating ring (20) is a hollow structure; and / or the lower energy-concentrating ring (30) is a hollow structure; and / or the outer energy-concentrating ring (40) is a hollow structure.

8. A gas stove, characterized in that, It includes a frame, a burner, and a pot-concentrating frame as described in any one of claims 1-7, wherein the pot-concentrating frame is supported on the frame and arranged around the outer periphery of the burner.

9. A method for controlling a gas stove, characterized in that, The gas stove according to claim 8, wherein the control method of the gas stove includes the following steps: Step S30: Obtain the content of the first target gas and the content of the second target gas at the position above the energy-concentrating pot frame, and adjust the distance H and / or the included angle α according to the content of the first target gas and the content of the second target gas.

10. The control method for a gas stove as described in claim 9, characterized in that, The method for adjusting the distance H and the included angle α in step S30 is as follows: Step S31: Determine whether the content of the first target gas is greater than the minimum value of the first preset range, and whether the content of the second target gas is greater than the minimum value of the second preset range. If not, make the current distance H > Hmin and α = αmin. If yes, proceed to the next step. Step S32: Determine whether the content of the first target gas is within the first preset range and whether the content of the second target gas is within the second preset range. If yes, keep the current distance H and the included angle α unchanged. If no, decrease the current distance H and / or increase the current included angle α.

11. The control method for a gas stove as described in claim 10, characterized in that, Before step S30, the method further includes: Step S10: Turn on the gas stove; Step S20: Determine if the current distance H = Hmin and the included angle α = αmin. If yes, proceed to step S30. If no, adjust the distance H to Hmin and the included angle α to αmin before proceeding to step S30.

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