Energy-gathering pot rack, gas cooker and control method of gas cooker

Abstract

The invention relates to the technical field of kitchen utensils, and discloses an energy-gathering pot rack, a gas cooker and a control method of the gas cooker. The energy-gathering pot rack comprises a support assembly, an upper energy-gathering ring, a lower energy-gathering ring and an outer energy-gathering ring, the upper energy-gathering ring, the lower energy-gathering ring and the outer energy-gathering ring are connected with the support assembly, the lower energy-gathering ring is arranged below the upper energy-gathering ring, a first flow channel is formed between the lower energy-gathering ring and the upper energy-gathering ring, the outer energy-gathering ring is annularly arranged on the outer side of the upper energy-gathering ring, and a second flow channel is formed between the outer energy-gathering ring and the upper energy-gathering ring; the highest point of the outer energy gathering ring is not lower than the highest point of the upper energy gathering ring, and the distance H between the two highest points is adjustable; and / or, the lower surface of the outer energy gathering ring obliquely extends upwards in the radial direction from outside to inside, and the included angle alpha between the lower surface and the horizontal plane is adjustable. According to the energy-gathering pot rack, secondary air can be smoothly supplemented, part of high-temperature flue gas flows back so that the heat efficiency can be improved, the inlet amount of the secondary air can be adjusted so that the secondary air can be matched with the current combustion state, and the combustion heat efficiency can be further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to an energy-gathering pot rack, a gas cooker and a control method for the gas cooker. Background Art

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

[0003] The heat energy generated by the combustion of the gas stove is partly used to heat the pot, and partly used to heat the surrounding air through heat radiation and dissipate outward, causing heat loss. Therefore, in order to pursue higher thermal efficiency, a pot stand with an energy-gathering plate has been developed in the related art. The energy-gathering plate forms a physical barrier between the flame and the outside air, reducing the loss of high-temperature smoke and thus reducing heat loss.

[0004] The setting of the energy collecting plate will affect the supplement of secondary air. If the amount of secondary air is insufficient, the gas will not burn completely, which will reduce the thermal efficiency of combustion. However, if the amount of secondary air is too much, the low-temperature secondary air needs to absorb heat first, which will also lead to low thermal efficiency and unstable combustion.

[0005] Therefore, there is an urgent need for an energy-gathering pot rack, a gas cooker and a control method for the gas cooker to solve the above-mentioned technical problems. Summary of the invention

[0006] One purpose of the present invention is to propose an energy-gathering pot rack that can smoothly replenish secondary air and allow part of the high-temperature flue gas to reflux. The high-temperature flue gas reflux can preheat the secondary air and further burn it to improve thermal efficiency. The amount of secondary air entering can be adjusted to match the current combustion state, thereby further improving the thermal efficiency of combustion.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] An energy-gathering pot support comprises a support assembly and an upper energy-gathering ring, a lower energy-gathering ring and an outer energy-gathering ring respectively connected to the support assembly, wherein the lower energy-gathering ring is arranged below the upper energy-gathering ring and forms a first flow channel with the upper energy-gathering ring, and the outer energy-gathering ring is arranged outside the upper energy-gathering ring and forms a second flow channel with the upper energy-gathering ring; wherein:

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

[0010] Along the radial direction from the outside to the inside, the lower surface of the outer energy-gathering ring extends upwardly at an inclination, 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 circular arc energy concentrating pieces, and the at least two circular arc energy concentrating pieces are arranged at intervals along the circumferential direction;

[0012] The energy-gathering pot rack further comprises a corresponding number of driving assemblies, each of which is disposed between two adjacent arc energy-gathering members, and each of which can drive one of the arc energy-gathering members to lift and / or rotate, so as to adjust the distance H and the angle α accordingly.

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

[0014] chassis;

[0015] An electric push rod, the electric push rod comprising a main body and a push rod, 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 driving source is connected to the housing, and an output end of the rotation driving source is connected to an adjacent arc energy concentrating member through a rotating shaft.

[0017] As an optional solution, the driving assembly further includes a supporting shaft, wherein the supporting shaft and the rotating shaft are respectively arranged on both sides of the casing, one end of the supporting shaft is connected to the casing, and the other end is movably connected to another arc energy concentrator adjacent to the driving assembly.

[0018] As an optional solution, the energy-gathering pot rack further 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 the first target gas and the content of the second target gas at a position above the energy-gathering pot rack. The driving assembly is communicatively connected to the flue gas analysis tube and adjusts the distance H and / or the angle α according to the detection result of the flue gas analysis tube.

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

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

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

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

[0023] Another object of the present invention is to provide a gas cooker which, by adopting the above-mentioned energy-gathering pot rack, has high thermal efficiency of combustion and low concentration of waste gases such as CO and NO in the smoke.

[0024] To achieve this object, the present invention adopts the following technical solutions:

[0025] A gas cooker comprises a frame, a burner and an energy-gathering pot frame, wherein the energy-gathering pot frame is supported on the frame and arranged around the outer periphery of the burner.

[0026] Another object of the present invention is to propose a control method for a gas cooker, which can adjust the amount of secondary air entering according to the content of the target gas in the high-temperature flue gas above the energy-gathering pot rack, ensure that the amount of secondary air matches the current combustion state, improve the thermal efficiency of combustion, and reduce the concentration of waste gases such as CO and NO in the flue gas.

[0027] To achieve this object, the present invention adopts the following technical solutions:

[0028] A method for controlling a gas cooker comprises the following steps:

[0029] Step S30, obtaining the content of the first target gas and the content of the second target gas above the energy-gathering cooker, and adjusting the distance H and / or the angle α according to the content of the first target gas and the content of the second target gas.

[0030] As an optional solution, the method for adjusting the distance H and the angle α in step S30 is:

[0031] Step S31, judging whether the content of the first target gas is greater than the minimum value of the first preset range, and the content of the second target gas is greater than the minimum value of the second preset range, if not, making the current distance H>Hmin and α=αmin, if yes, proceeding to the next step;

[0032] Step S32, determine whether 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. If so, keep the current distance H and angle α unchanged; if not, reduce the current distance H and / or increase the current angle α.

[0033] As an optional solution, before step S30, the method further includes:

[0034] Step S10, turning on the gas cooker;

[0035] Step S20, determine whether the current distance H = Hmin, and the angle α = αmin, if so, proceed to step S30, if not, adjust the distance H to Hmin, and adjust the angle α to αmin, then proceed to step S30.

[0036] The beneficial effects of the present invention are:

[0037] The energy-gathering pot stand of the present invention:

[0038] (1) When in use, external air can enter the energy-gathering pot frame from the first flow channel, thereby supplementing secondary air for the combustion of gas. The upper energy-gathering ring and the lower energy-gathering ring 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 the combustion flows outward from the space between the energy-gathering pot frame and the bottom surface of the pot. A part of the high-temperature flue gas will flow into the second flow channel under the obstruction of the outer energy-gathering ring, and enter the first flow channel driven by the secondary air flow, that is, forming a reflux of high-temperature flue gas. The refluxed high-temperature flue gas can not only preheat the secondary air to improve the stability and thermal efficiency of combustion, but also can be further burned after entering the energy-gathering pot frame, thereby further improving the thermal efficiency of combustion and reducing the concentration of waste gases such as CO and NO in the final exhaust flue gas. By adjusting the distance H between the highest point of the outer energy focusing circle and the highest point of the upper energy focusing circle, the difficulty of high-temperature flue gas to discharge from the energy focusing pot frame can be adjusted, and then the difficulty of secondary air to enter the energy focusing pot frame can be adjusted; by adjusting the inclination angle of the lower surface of the outer energy focusing circle, the difficulty of secondary air to enter the energy focusing pot frame can also be adjusted, thereby ensuring that the amount of secondary air supplement can match the current combustion state, ensuring that the amount of secondary air entering is appropriate, and then improving the thermal efficiency of combustion.

[0039] (2) By detecting the content of the first target gas and the content of the second target gas above the energy-gathering boiler rack through the flue gas analysis tube, the current combustion state can be learned. By setting the drive component to communicate with the flue gas analysis tube, the drive component can adjust the amount of secondary air added according to the combustion state, thereby improving the thermal efficiency of the 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 at a relatively low level, which is beneficial for the reflux of high-temperature flue gas and further improves the thermal efficiency of combustion.

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

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

[0043] The gas cooker of the present invention adopts the above-mentioned energy-gathering pot rack, so that the thermal efficiency of combustion is high and the concentration of waste gases such as CO and NO in the smoke is low.

[0044] The control method of the gas cooker of the present invention can obtain the current combustion state by acquiring and analyzing the content of the first target gas and the content of the second target gas at the position above the energy-gathering pot rack, and adjust the distance H and the angle α according to the combustion state, so as to adjust the secondary air supplement amount, ensure that the secondary air supplement matches the current combustion state, and then improve the thermal efficiency of the combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a structural schematic diagram of an energy-gathering pot rack provided in a specific embodiment of the present invention;

[0046] Figure 2 is a schematic diagram of the airflow state at the energy-gathering pot rack provided in a specific embodiment of the present invention;

[0047] Figure 3 is a cross-sectional view of an energy-gathering pot stand provided in a specific embodiment of the present invention;

[0048] Figure 4 It is a top view of a partial structure of an energy-gathering pot rack provided in a specific embodiment of the present invention;

[0049] Figure 5 is a schematic structural diagram of a circular arc energy concentrator provided in a specific embodiment of the present invention;

[0050] Figure 6 is a schematic diagram of the structure of a drive assembly provided in a specific embodiment of the present invention;

[0051] Figure 7 is a schematic diagram of the energy-gathering pot stand provided by a specific embodiment of the present invention when the outer energy-gathering circle is at the lowest point;

[0052] Figure 8 is a schematic diagram of the energy-gathering pot stand provided by a specific embodiment of the present invention when the outer energy-gathering circle is at the highest point;

[0053] Fig. 9 It is a schematic diagram of the energy-gathering pot stand provided by a specific embodiment of the present invention, in which the angle α between the lower surface of the outer energy-gathering ring and the horizontal plane is at a minimum value;

[0054] Fig.10 It is a schematic diagram of the energy-gathering pot stand provided by a specific embodiment of the present invention, in which the angle α between the lower surface of the outer energy-gathering ring and the horizontal plane is at a maximum value;

[0055] Fig.11 It is a flow chart of a control method of a gas cooker provided in a specific embodiment of the present invention.

[0056] In the figure:

[0057] 10. bracket assembly; 11. foot piece; 111. lower support foot; 1111. bottom surface; 112. connecting beam; 113. upper support foot;

[0058] 20. upper energy-gathering ring; 21. first arc-shaped guiding surface; 22. first lower side wall; 23. outer side wall;

[0059] 30. lower energy-gathering ring; 31. second arc-shaped guiding surface; 32. upper side wall;

[0060] 40, outer energy-gathering ring; 41, arc energy-gathering member; 411, second lower side wall; 412, arc groove; 413, inner side wall;

[0061] 51, first flow channel; 52, second flow channel; 53, third flow channel;

[0062] 60. driving assembly; 61. housing; 62. electric push rod; 63. rotating shaft; 64. supporting shaft;

[0063] 70. Flue gas analysis tube. DETAILED DESCRIPTION

[0064] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0065] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0067] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0068] This embodiment provides an energy-gathering pot stand and a gas cooker, wherein the gas cooker includes a frame, a burner and an energy-gathering pot stand. The burner is supported on the frame, and the air inlet end of the burner is connected to an external gas source through a nozzle structure. When the gas cooker is working, the nozzle sprays gas into the burner and simultaneously injects primary air into the burner. The primary air and gas are mixed inside the burner and discharged from the fire hole of the burner and burned. The energy-gathering pot stand is supported on the frame and is arranged around the outer periphery of the burner. The energy-gathering pot stand is used to support the pot.

[0069] The existing energy-gathering pot rack is usually equipped with an energy-gathering plate, but the energy-gathering plate will affect the supplement of secondary air. If the amount of secondary air is insufficient, the gas will not burn completely, which will reduce the thermal efficiency of combustion. However, if the amount of secondary air is too much, the low-temperature secondary air needs to absorb heat first, which will lead to low thermal efficiency and unstable combustion.

[0070] In this regard, Figure 1-Figure 2 As shown, the energy-gathering pot support includes a support assembly 10, an upper energy-gathering ring 20, a lower energy-gathering ring 30 and an outer energy-gathering ring 40, wherein the upper energy-gathering ring 20, the lower energy-gathering ring 30 and the outer energy-gathering ring 40 are all connected to the support assembly 10. The lower energy-gathering ring 30 is arranged below the upper energy-gathering ring 20, and a first flow channel 51 is formed between the lower energy-gathering ring 30 and the upper energy-gathering ring 20, and the outer energy-gathering ring 40 is arranged outside the upper energy-gathering ring 20, and a second flow channel 52 is formed between the outer energy-gathering ring 40 and the upper energy-gathering ring 20. The highest point of the outer energy-gathering ring 40 is not lower than the highest point of the upper energy-gathering ring 20, and the distance H between the two highest points is adjustable. In the radial direction and from the outside to the inside, the lower surface of the outer energy-gathering ring 40 extends upward at an angle, and the angle α between the lower surface and the horizontal plane is adjustable.

[0071] Figure 2The dashed arrow in the middle indicates the flow direction of the secondary air, and the solid arrow indicates the flow direction of the high-temperature flue gas. When the burner is burning, the secondary air outside the energy-gathering pot rack can enter the energy-gathering pot rack from the first flow channel 51, thereby replenishing the secondary air for the combustion of the gas. The upper energy-gathering ring 20 and the lower energy-gathering ring 30 can preheat the secondary air, thereby ensuring the stability of the combustion and improving the thermal efficiency of the combustion. The high-temperature flue gas generated by the combustion flows outward from the space between the energy-gathering pot rack and the bottom surface of the cookware. A part of the high-temperature flue gas will flow into the second flow channel 52 under the obstruction of the outer energy-gathering ring 40, and enter the first flow channel 51 driven by the secondary air flow, i.e., a reflux of the high-temperature flue gas is formed. The refluxed high-temperature flue gas can not only preheat the secondary air to improve the stability and thermal efficiency of the combustion, but also can be further burned after entering the energy-gathering pot rack, thereby further improving the thermal efficiency of the combustion and reducing the concentration of waste gases such as CO and NO in the final exhaust flue gas. In addition, by adjusting the distance H between the highest point of the outer energy focusing ring 40 and the highest point of the upper energy focusing ring 20, the difficulty of high-temperature flue gas discharging from the energy focusing pot frame can be adjusted, and then the difficulty of secondary air entering the energy focusing pot frame can be adjusted; by adjusting the inclination angle of the lower surface of the outer energy focusing ring 40, the difficulty of secondary air entering the energy focusing pot frame can also be adjusted, thereby ensuring that the amount of secondary air supplement can match the current combustion state, ensuring that the amount of secondary air entering is appropriate, and then improving the thermal efficiency of combustion.

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

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

[0074] like Figure 2 As shown, the upper end of the upper energy-gathering ring 20 is configured as a first arc-shaped guide surface 21. The setting of the first arc-shaped guide surface 21 can reduce the resistance of the high-temperature flue gas discharge inside the energy-gathering pot frame, and ensure the smooth flow of the high-temperature flue gas. Since the high-temperature flue gas has a tendency to flow upward, in this embodiment, the first arc-shaped guide surface 21 extends to the upper end of the second flow channel 52. Such a setting is conducive to guiding the high-temperature flue gas into the second flow channel 52, and ensuring sufficient high-temperature flue gas reflux during the combustion process.

[0075] like Figure 2As shown, the width of the second flow channel 52 gradually decreases in the axial direction and from the top to the bottom. This arrangement makes the pressure at the inlet end of the second flow channel 52 in a relatively small state, which is conducive to sufficient high-temperature flue gas entering the second flow channel 52, increasing the amount of high-temperature flue gas that flows back, so as to further improve the thermal efficiency of combustion. In this embodiment, the second flow channel 52 is formed between the outer wall 23 of the upper energy focusing ring 20 and the inner wall 413 of the outer energy focusing ring 40. Optionally, the inner wall 413 is configured as a straight surface, and since the first arc-shaped guide surface 21 extends to connect with the inner wall 413, the second flow channel 52 is naturally formed into a shape with a gradually smaller width.

[0076] like Figure 2 As shown, the first flow channel 51 extends obliquely upward in the radial direction from the outside to the inside. Since the high-temperature flue gas has a tendency 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 reflux, thereby further improving the thermal efficiency of the combustion. In this embodiment, the lower side wall of the upper energy focusing ring 20 is the first lower side wall 22, and the first flow channel 51 is formed between the first lower side wall 22 and the upper side wall 32 of the lower energy focusing ring 30. In the radial direction from the outside to the inside, the first lower side wall 22 and the upper side wall 32 are both set to extend obliquely upward, thereby 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 focusing 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 focusing ring 30. By providing the third flow channel 53, not only is there an additional channel for supplementing secondary air to the burner inside the energy focusing pot frame, but also the secondary air entering the energy focusing pot frame from the first flow channel 51 and the third flow channel 53 can correspond to the top and the root of the flame respectively, that is, the secondary air is supplemented in all directions, thereby further ensuring the sufficiency of combustion and improving the thermal efficiency of combustion.

[0078] like Figure 1 and Figure 3As shown, the bracket assembly 10 includes at least three foot pieces 11, and at least three foot pieces 11 are arranged at intervals along the circumferential direction. The upper energy focusing ring 20 is connected to each foot piece 11 respectively, the lower energy focusing ring 30 is connected to each foot piece 11 respectively, and the outer energy focusing ring 40 is indirectly connected to each foot piece 11 through other structures (see the following description for details), which not only realizes the fixation of the three energy focusing rings, but also makes the overall structure of the energy focusing pot rack as a whole. Optionally, in this embodiment, the bracket assembly 10 includes four foot pieces 11. In other embodiments, the bracket assembly 10 can also be provided with three, five or more foot pieces 11, which is not specifically limited here. Optionally, both the upper energy focusing ring 20 and the lower energy focusing ring 30 can be connected to the foot piece 11 by welding, fastener connection, etc., which is not specifically limited here.

[0079] In this embodiment, the foot piece 11 forms a C-shaped space with an opening facing the outside, and the upper energy focusing ring 20 and the lower energy focusing ring 30 are both installed in the C-shaped space. This arrangement allows the foot piece 11 to protect each energy focusing ring and reduce the risk of each energy focusing ring being damaged by collision with an external structure. 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 the upper support leg 113 are respectively connected to the upper and lower ends of the connecting beam 112, and the lower support leg 111 extends horizontally outward from the lower end of the connecting beam 112, and part of the upper support leg 113 extends outward from the upper end of the connecting beam 112, thereby forming a C-shaped space. The lower support leg 111 is supported on the frame, and the lower surface of the lower support leg 111 is the bottom surface 1111 of the bracket assembly 10. The upper support leg 113 is used to support the cookware, and the upper energy focusing ring 20 and the lower energy focusing ring 30 are both connected to the connecting beam 112 .

[0080] In order to adjust the inclination angle and height of the lower surface of the outer energy-gathering ring 40, in this embodiment, Figure 1 and Figure 2 As shown, the outer energy focusing ring 40 includes at least two arc energy focusing pieces 41, and at least two arc energy focusing pieces 41 are arranged at intervals along the circumferential direction. The lower side wall of the arc energy focusing piece 41 is a second lower side wall 411, and the lower surfaces of the plurality of second lower side walls 411 constitute the lower surface of the outer energy focusing ring 40. The energy focusing pot rack also includes a corresponding number of driving assemblies 60, each driving assembly 60 is correspondingly arranged between two adjacent arc energy focusing pieces 41, and each driving assembly 60 can correspondingly drive an arc energy focusing piece 41 to rise and fall, thereby adjusting the distance H between the highest point of the upper energy focusing ring 20 and the highest point of the lower energy focusing ring 30. The driving assembly 60 can also drive the corresponding arc energy focusing piece 41 to rotate, thereby adjusting the angle α between the lower surface of the outer energy focusing ring 40 and the horizontal plane. In this embodiment, by configuring the outer energy focusing ring 40 to be composed of a plurality of arc energy focusing pieces 41 and configuring a corresponding number of driving assemblies 60, the inclination angles of the lower surface of the outer energy focusing ring 40 at various positions along the circumferential direction can be adjusted synchronously with the same trend.

[0081] It should be noted that when the outer energy concentrating ring 40 rotates, the inclination angles at various positions along the circumferential direction of its lower surface may be different, but during the rotation process, the changing trend of the inclination angles at various positions is consistent. Therefore, in the process of actually controlling the quantitative rotation of the arc energy concentrating member 41, the angle of the lower side wall of the arc energy concentrating member 41 at one end connected to the driving assembly 60 that drives the arc energy concentrating member 41 to rotate can be used as a reference.

[0082] In this embodiment, Figure 1 As shown, the number of arc 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 a corresponding foot piece 11, and each arc energy concentrator 41 is correspondingly arranged between two adjacent foot pieces 11, and is indirectly connected to the bracket assembly 10 through the drive assembly 60.

[0083] Specifically, Figure 4-Figure 6 As shown, the driving assembly 60 includes a housing 61, an electric push rod 62 and a rotational driving source, wherein the electric push rod 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 rotational driving source is connected to the housing 61, and the output end of the rotational driving source is connected to an adjacent arc energy concentrator 41 through a rotating shaft 63.

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

[0085] like Figure 4-Figure 6 As shown, the driving assembly 60 further includes a support shaft 64, and the support shaft 64 and the rotating shaft 63 are respectively arranged 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 circular arc energy concentrator 41 adjacent to the driving assembly 60. That is to say, for each circular arc energy concentrator 41, its first end is transmission-connected to one driving assembly 60 through the rotating shaft 63, and the second end is supported on the support shaft 64 of another driving assembly 60, thereby ensuring the stability of the support of the circular arc energy concentrator 41.

[0086] In this embodiment, the rotating shaft 63 is an arc shaft, and when the first end of the arc energy concentrator 41 rotates with the arc shaft connected thereto, the motion trajectory of the second end is also an arc. To ensure that the second end of the arc energy concentrator 41 can be supported, an arc groove 412 is provided at the second end of the arc energy concentrator 41, and the support shaft 64 of the driving assembly 60 adjacent to the arc groove 412 is inserted into the arc groove 412. When the first end of the arc energy concentrator 41 rotates with the arc shaft, the support shaft 64 at the second end slides in the arc groove 412 at the second end.

[0087] like Figure 3 As shown, the energy-gathering pot rack further includes a flue gas analysis tube 70, which is disposed 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 upper position of the energy-gathering pot rack. The drive assembly 60 is in communication connection with the flue gas analysis tube 70, and the drive assembly 60 can drive the outer energy-gathering 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 angle α. By detecting the content of the first target gas and the content of the second target gas at the upper position of the energy-gathering pot rack by the flue gas analysis tube 70, the current combustion state can be obtained, that is, the drive assembly 60 adjusts the supplement amount of the secondary air according to the combustion state, thereby improving the thermal efficiency of the combustion. In this embodiment, the flue gas analysis tube 70 can be fixed at the outer side wall 23 of the upper energy-gathering ring 20, or fixed at the inner side wall 413 of the arc energy-gathering member 41, which is not specifically limited here.

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

[0089] When the flue gas analysis 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 gas combustion is adequate and the gas combustion thermal efficiency is high. At this time, the drive assembly 60 does not drive the external energy focusing ring 40.

[0090] When the flue gas analysis tube 70 detects that the CO content is less than the minimum value of the first preset range, and / or the NO content is less than the minimum value of the second preset range, it means that the secondary air supplement amount is too much at this time. Too much low-temperature secondary air will absorb more heat energy, and the combustion thermal efficiency is low. At this time, the drive component 60 drives the outer energy focusing ring 40 to increase the distance H and / or reduce the angle α to reduce the supplement amount of secondary air. The increase in H can reduce the blocking effect of the outer energy focusing ring 40 on the flue gas, increase the high-temperature flue gas discharge resistance, and make the internal pressure of the energy focusing pot ring in a higher state, thereby reducing the amount of secondary air entering. The reduction of the angle α reduces the diversion effect on the secondary air entering the first flow channel 51, and can also reduce the amount of low-temperature secondary air entering.

[0091] When the flue gas analysis tube 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 means that the secondary air supplement amount is insufficient, the combustion components are insufficient, and the combustion thermal efficiency is low. At this time, the drive assembly 60 can drive the outer energy focusing ring 40 to move, reduce the distance H and / or increase the angle α. Reducing the distance H can reduce the resistance of the outer energy focusing ring 40 to the high-temperature flue gas, reduce the pressure near the burner, thereby increasing the supplement amount of secondary air, and increasing the angle α, which increases the diversion effect of the outer energy focusing ring 40 on the secondary air and can also increase the supplement amount of secondary air.

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

[0093] like Fig.11 As shown, this embodiment also provides a control method for a gas cooker, which uses the above-mentioned gas cooker and includes the steps of:

[0094] Step S10, turning on the gas cooker;

[0095] Step S20, determining whether the current distance H=Hmin, and the angle α=αmin, if so, proceeding to step S30, if not, adjusting the distance H to Hmin, and adjusting the angle α to αmin, and then proceeding to step S30;

[0096] Step S30, obtaining the content of the first target gas and the content of the second target gas at the position above the energy-gathering pot support, and adjusting the distance H and / or the angle α according to the content of the first target gas and the content of the second target gas;

[0097] Step S40, repeating step S30 until the gas cooker is turned off.

[0098] The control method of the gas cooker in this embodiment can obtain the current combustion state by acquiring and analyzing the content of the first target gas and the content of the second target gas at the position above the energy-gathering pot rack, and adjust the distance H and / or the angle α according to the combustion state, so as to adjust the secondary air supplement amount, ensure that the secondary air supplement matches the current combustion state, and thus improve the thermal efficiency of the combustion.

[0099] In addition, the purpose of step S20 is to make the distance H and the angle α of the outer energy focusing ring 40 both in the initial position, so as to facilitate subsequent adjustment. Fig.11Only one control process is shown in the figure, which first determines whether the current distance H is less than Hmin, and then determines whether the current angle α is the minimum value αmin. In other embodiments, it is also possible to first determine whether the current angle α is the minimum value αmin, and then determine whether the current distance H is less than Hmin. In another embodiment, it is also possible to simultaneously determine whether the current distance H is less than Hmin and whether the current angle α is the minimum value αmin. As long as the current distance H = Hmin and the current angle α = αmin are ensured, then enter step S30.

[0100] Specifically, the method of adjusting the distance H and the angle α in step S30 is:

[0101] Step S31, determining whether the content of the first target gas is greater than the minimum value of the first preset range, and 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, which means that the amount of secondary air supplemented is too large. Too much low-temperature secondary air will absorb more heat energy, and the combustion thermal efficiency is low. At this time, the drive component 60 drives the outer energy focusing ring 40 to operate, so that H>Hmin, and keeps α at the minimum to reduce the amount of secondary air supplement. It should be noted that the specific increase of H can be set in advance, or it can be converted according to the specific amount of the target gas, and no specific limitation is made here.

[0103] If the judgment result is "yes", the process proceeds to step S32 to judge whether 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.

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

[0105] If the judgment result of step S32 is "No", it means that the content of CO is greater than the maximum value of the first preset range, and / or the content of NO is greater than the maximum value of the second preset range, which means that the secondary air replenishment is insufficient at this time, so the current distance H is reduced, and / or the current angle α is increased, thereby increasing the replenishment of secondary air to ensure that the subsequent combustion can be sufficient. In some embodiments, the specific reduction value of the distance H and the specific increase value of the angle α can be set according to the content value of the target gas. In some embodiments, after the judgment 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 replenishment of secondary air most quickly.

[0106] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope, and the content of this specification should not be understood as limiting the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. Energy-gathering pot rack, characterized in that: The invention comprises 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), wherein the lower energy focusing ring (30) is arranged below the upper energy focusing ring (20) and forms a first flow channel (51) with the upper energy focusing ring (20), and the outer energy focusing ring (40) is arranged outside the upper energy focusing ring (20) and forms a second flow channel (52) with the upper energy focusing ring (20); wherein: The highest point of the outer energy focusing ring (40) is not lower than the highest point of the upper energy focusing ring (20), and the distance H between the two highest points is adjustable; and / or In the radial direction from the outside to the inside, the lower surface of the outer energy focusing ring (40) extends obliquely upward, and the included angle α between the lower surface and the horizontal plane is adjustable.

2. The energy-gathering pot stand according to claim 1, characterized in that: The outer energy concentrating ring (40) comprises at least two circular arc energy concentrating pieces (41), and the at least two circular arc energy concentrating pieces (41) are arranged at intervals along the circumferential direction; The energy-gathering pot rack further comprises a corresponding number of driving assemblies (60), each of the driving assemblies (60) being correspondingly arranged between two adjacent circular arc energy-gathering members (41), and each of the driving assemblies (60) being capable of correspondingly driving one of the circular arc energy-gathering members (41) to rise and fall and / or rotate, so as to correspondingly adjust the distance H and the angle α.

3. The energy-gathering pot stand according to claim 2, characterized in that: The driving assembly (60) comprises: Housing (61); An electric push rod (62), the electric push rod (62) comprising 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 of the two is connected to the bracket assembly (10); A rotation driving source is connected to the housing (61), and an output end of the rotation driving source is connected to an adjacent circular arc energy concentrator (41) via a rotating shaft (63).

4. The energy-gathering pot stand according to claim 3, characterized in that: The driving assembly (60) further comprises a supporting shaft (64), wherein the supporting shaft (64) and the rotating shaft (63) are respectively arranged on both sides of the housing (61), and one end of the supporting shaft (64) is connected to the housing (61), and the other end is movably connected to another circular arc energy concentrator (41) adjacent to the driving assembly (60).

5. The energy-gathering pot stand according to claim 2, characterized in that: The energy-gathering boiler rack further comprises a flue gas analysis tube (70), which is arranged 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 a position above the energy-gathering boiler rack. The driving component (60) is communicatively connected with the flue gas analysis tube (70) and can adjust the distance H and / or the angle α according to the detection result of the flue gas analysis tube (70).

6. The energy-gathering pot support according to any one of claims 1 to 5, characterized in that: The width of the second flow channel (52) gradually decreases along the axial direction from top to bottom; and / or In the radial direction and from the outside to the inside, the first flow channel (51) extends obliquely upward.

7. The energy-gathering pot support according to any one of claims 1 to 5, characterized in that: The lowest point of the lower energy focusing 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 focusing ring (30).

8. The energy-gathering pot support according to any one of claims 1 to 5, characterized in that: The upper energy focusing ring (20) is a hollow structure; and / or the lower energy focusing ring (30) is a hollow structure; and / or the outer energy focusing ring (40) is a hollow structure.

9. A gas cooker, characterized in that: The invention comprises a frame, a burner and the energy-gathering pot rack according to any one of claims 1 to 8, wherein the energy-gathering pot rack is supported on the frame and is arranged around the outer periphery of the burner.

10. A method for controlling a gas cooker, characterized in that: The gas cooker according to claim 9 is applied, and the control method of the gas cooker comprises the steps of: Step S30, obtaining the content of the first target gas and the content of the second target gas above the energy-gathering cooker, and adjusting the distance H and / or the angle α according to the content of the first target gas and the content of the second target gas.

11. The control method of the gas cooker according to claim 10, characterized in that: The method of adjusting the distance H and the angle α in step S30 is: Step S31, judging whether the content of the first target gas is greater than the minimum value of the first preset range, and the content of the second target gas is greater than the minimum value of the second preset range, if not, making the current distance H>Hmin and α=αmin, if yes, proceeding to the next step; Step S32, determine whether 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. If so, keep the current distance H and angle α unchanged; if not, reduce the current distance H and / or increase the current angle α.

12. The control method of the gas cooker according to claim 11, characterized in that: Before step S30, the method further includes: Step S10, turning on the gas cooker; Step S20, determine whether the current distance H = Hmin, and the angle α = αmin, if so, proceed to step S30, if not, adjust the distance H to Hmin, and adjust the angle α to αmin, then proceed to step S30.

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