Pot support and stove

Abstract

The utility model discloses a pot support and a stove, and relates to the technical field of stoves, the pot support comprises a first support, a second support and an upper support, the first support is enclosed to form a central hole, and the top of the first support is provided with a smoke discharge surface; the second support is arranged on the first support, the top of the second support is provided with a flow guide face arranged around the central hole, and the smoke exhaust face surrounds the periphery of the flow guide face; the upper support is arranged at the top of the first support and / or the second support, the top of the upper support is provided with a bearing face used for bearing a to-be-heated piece, and the flow guide face and the smoke exhaust face are lower than the bearing face. According to the technical scheme provided by the utility model, the utilization rate of high-temperature flue gas can be improved, so that the heat efficiency of the stove is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cookers, and particularly relates to a pot support and a cooker. Background Art

[0002] In the related art, a burner of a cooker usually generates a certain amount of high-temperature flue gas during combustion. These high-temperature flue gases usually diffuse freely along the bottom surface of the cooking utensil quickly, which causes the high-temperature flue gases to fail to fully contact and exchange heat with the cooking utensil, and further results in low thermal efficiency of the cooker. Summary of the Utility Model

[0003] The main object of the utility model is to provide a pot support and a cooker, aiming to improve the utilization rate of high-temperature flue gas and thus improve the thermal efficiency of the cooker.

[0004] To achieve the above object, the pot support proposed by the utility model includes:

[0005] A first support, which encloses a central hole, and the top of the first support has a smoke exhaust surface;

[0006] A second support, which is arranged on the first support, and the top of the second support has a diversion surface arranged around the central hole, and the smoke exhaust surface surrounds the outer periphery of the diversion surface; and

[0007] An upper support, which is arranged on the top of the first support and / or the second support, and the top of the upper support has a bearing surface for supporting a piece to be heated, and the diversion surface and the smoke exhaust surface are lower than the bearing surface.

[0008] In an embodiment, a buffer gap is formed at intervals in the radial direction of the central hole between the smoke exhaust surface and the diversion surface.

[0009] In an embodiment, the smoke exhaust surface is higher than the diversion surface, and the upper surface of the first support further has a guiding surface connected to the inner periphery of the smoke exhaust surface. The guiding surface extends downward and forms the buffer gap at intervals with the diversion surface. A buffer cavity is formed at intervals between the guiding surface and the second support, and the buffer cavity communicates with the lower side of the buffer gap.

[0010] In an embodiment, the guiding surface extends downward and obliquely along the direction close to the central hole, and the minimum distance between the diversion surface and the guiding surface in the radial direction of the central hole ranges from 5 mm to 15 mm.

[0011] In an embodiment, the height difference between the smoke exhaust surface and the bearing surface ranges from 3 mm to 9 mm.

[0012] In an embodiment, the height difference between the diversion surface and the bearing surface ranges from 3 mm to 9 mm.

[0013] In one embodiment, the smoke exhaust surface and / or the flow guiding surface are arranged in parallel with the plane where the central hole is located.

[0014] In one embodiment, the center line of the smoke exhaust surface extending along the circumferential direction of the central hole is arranged in a regular polygon, and the center line of the flow guiding surface extending along the circumferential direction of the central hole is arranged in a circle.

[0015] In one embodiment, the upper support includes a second support provided on the second bracket, and the second support is disposed opposite to the corner of the smoke exhaust surface.

[0016] In one embodiment, the second bracket includes a first ring plate and a second ring plate connected to the inner peripheral edge of the first ring plate. The second ring plate extends obliquely downward in the direction close to the central hole, and the flow guiding surface is disposed on the upper surface of the first ring plate.

[0017] In one embodiment, the second bracket further includes an outer reinforcing flange bent downward from the outer peripheral edge of the first ring plate, and the upper surface of the outer reinforcing flange and the flow guiding surface are smoothly transitioned.

[0018] In one embodiment, the second bracket further includes an inner reinforcing flange formed by bending from the inner peripheral edge of the second ring plate.

[0019] The present utility model further provides a cooker, including the aforementioned pot support.

[0020] According to the technical solution of the present utility model, by providing the flow guiding surface and the smoke exhaust surface, when a cooking utensil is placed on the pot support for heating, the gaps between the flow guiding surface and the bottom of the cooking utensil and between the smoke exhaust surface and the bottom of the cooking utensil together form a smoke exhaust channel for high-temperature flue gas. Under the guiding action of the flow guiding surface and the smoke exhaust surface, the high-temperature flue gas flows from the high-temperature area to the low-temperature area along the smoke exhaust channel, and heats the cooking utensil during the flowing process, and finally flows to the outside of the first bracket through the gap between the top of the first bracket and the bottom of the cooking utensil, so that the high-temperature flue gas fully exchanges heat with the cooking utensil, thereby improving the thermal efficiency of the cooker.

[0021] Secondly, by adding the smoke exhaust surface, the total length of the smoke exhaust channel in the radial direction of the central hole can be increased, so as to extend the heat exchange time between the flue gas and the bottom of the cooking utensil, and further improve the utilization rate of the high-temperature flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0023] Figure 1 An isometric view of an embodiment of the pot support provided by the present invention from a top-down perspective;

[0024] Figure 2 For Figure 1 An isometric view of the shown embodiment from a bottom-up perspective;

[0025] Figure 3 For Figure 1 A top view of the shown embodiment;

[0026] Figure 4 For Figure 3 A cross-sectional view taken along line A-A in

[0027] Figure 5 For Figure 4 A partially enlarged view at C in

[0028] Figure 6 For Figure 3 A cross-sectional view taken along line B-B in

[0029] Figure 7 For Figure 1 A schematic diagram of the installation structure of the second support and the second bracket in

[0030] Figure 8 For Figure 1 A schematic diagram of the structure of the upper plate in

[0031] Explanation of the reference numerals in the drawings:

[0032] 101, pot support; 102, central hole; 103, smoke exhaust channel; 104, buffer gap; 105, buffer cavity;

[0033] 10, first bracket; 10a, cavity; 11, upper plate; 11a, smoke exhaust surface; 11b, guiding surface; 111, positioning groove; 112, reinforcing rib; 113, annular boss; 12, lower plate;

[0034] 22, support plate; 31, reflector; 40, lower support;

[0035] 50, upper support; 50a, bearing surface; 51, first support; 52, second support; 521, upper bearing part; 522, connecting part; 523, lower supporting part;

[0036] 61. First fastener; 62. Second fastener;

[0037] 70. Second bracket; 70a. Flow guiding surface; 71. First ring plate; 72. Second ring plate; 73. Outer strengthening flange; 74. Inner strengthening flange.

[0038] The realization, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0039] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0040] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present utility model, then the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, then the directional indications will also change accordingly.

[0041] In addition, if there are descriptions such as "first" and "second" involved in the embodiments of the present utility model, then the descriptions of "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0042] The present utility model provides a flow guiding bracket and a pot bracket applied with the flow guiding bracket. The flow guiding bracket (also called a flow guiding ring or a flow guiding disc) can be erected on a heat concentrating bracket (also called a heat concentrating ring or a heat concentrating disc) to jointly form a pot bracket applied to a cooking appliance.

[0043] Please refer to Figures 1 to 4, in an embodiment of the present utility model, the pot support 101 includes a first support 10 (i.e., an energy-gathering support) and a second support 70 (i.e., a flow-guiding support). The first support 10 defines a central hole 102, and the second support 70 is disposed on the first support 10; the second support 70 is arranged around the central hole 102 and is located on one side of the top of the first support 10 close to the central hole 102.

[0044] Without loss of generality, the pot support 101 is usually arranged on the liquid receiving tray of the cooker and is used for supporting a heating element, such as a cooking utensil (including but not limited to a flat pan, a pointed pan, etc.). Specifically, when the pot support 101 is installed on the cooking surface of the cooker, the central hole 102 of the first support 10 can accommodate the burner of the cooker and is used to make the flame formed by the burner act on the bottom surface of the cooking utensil. The flame generated by the burner can be surrounded within the first support 10 as much as possible through the central hole 102 defined by the first support 10, so that the heat of the flame generated by the burner is concentrated in the area where the central hole 102 is located as much as possible, thereby achieving an energy-gathering effect and improving the thermal efficiency of the cooker.

[0045] On this basis, by adding the second support 70 to the first support 10, since the second support 70 is arranged around the central hole 102 and is closer to the central hole 102, the flame generated by the burner can be surrounded within the second support 70 as much as possible, so that the heat of the flame generated by the burner is concentrated within the second support 70 to the greatest extent, forming a high-temperature area in the area within the second support 70 and a low-temperature area in the area between the second support 70 and the first support 10, and then the flame and high-temperature flue gas in the high-temperature area play a main heating role on the cooking utensil, thereby improving the thermal efficiency of the cooker.

[0046] When the spread area of the flame formed by the burner is relatively large, the flame will directly contact the tops of the first support 10 and the second support 70 and transfer heat to the first support 10 and the second support 70, resulting in the first support 10 and the second support 70 being heated to a relatively high temperature.

[0047] It can be understood that the higher the temperature of an object, the greater the total energy it radiates. When using the cooker, since a high-temperature area is formed in the area within the second support 70, the temperature of the second support 70 is higher. If more heat of the second support 70 can be transferred to the cooking utensil in the form of thermal radiation, the thermal efficiency of the cooker can be improved.

[0048] Therefore, optionally in the embodiments of the present utility model, at least a part of the upper surface of the second bracket 70 is covered with a far-infrared radiation structure (not shown in the drawings). In this way, the far-infrared radiation structure can convert more energy of the second bracket 70 into thermal radiation energy and radiate it to the cooking utensil, thereby utilizing part of the heat that would otherwise dissipate naturally, and further improving the thermal efficiency of the cooker. Of course, in other embodiments, the far-infrared radiation structure may not be provided, or the far-infrared radiation structure may be provided on the upper surface of the first bracket 10.

[0049] Optionally, the far-infrared radiation structure is configured as an enamel layer, and the far-infrared radiation structure covers the upper surface of the second bracket 70. That is to say, an enamel layer is formed on the upper surface of the second bracket 70 by using an enamel process, and the material used in the enamel process is a far-infrared radiation enamel material. In this way, using the enamel layer as the far-infrared radiation structure can not only enable the second bracket 70 to have good far-infrared radiation performance, but also make the second bracket 70 easy to clean and improve its aesthetics.

[0050] Of course, in some other embodiments, the far-infrared radiation structure may only cover the upper surface of the top of the second bracket 70. In other embodiments, other far-infrared radiation structures may also be adopted. For example, a graphene layer is provided on the upper surface of the second bracket 70 to utilize the good far-infrared radiation effect of the graphene layer.

[0051] Please refer to Figure 1 , further, the pot support 101 further includes an upper support 50, and the upper support 50 is disposed on the top of the first bracket 10 and / or the second bracket 70 to support the piece to be heated. In this way, a gap can be formed between the bottom surface of the cooking utensil and the upper surfaces of the first bracket 10 and the second bracket 70, which is beneficial for the flame generated by the burner to spread freely and achieve more sufficient combustion and heat exchange.

[0052] Of course, in other embodiments, the upper support 50 may not be provided, and the upper surfaces of the first bracket 10 and / or the second bracket 70 may be directly used to support the piece to be heated. On this basis, in order to enable the flame generated by the burner to spread freely, avoidance through grooves may be provided on the upper surfaces of the first bracket 10 and the second bracket 70, and the avoidance through grooves penetrate through the opposite sides of the first bracket 10 and the second bracket 70 in the radial direction of the central hole 102. In this way, the flame and flue gas can flow in the avoidance through grooves.

[0053] Without loss of generality, when the burner of the cooker burns, it usually generates a certain amount of high-temperature flue gas. These high-temperature flue gases usually spread freely along the bottom surface of the cooking utensil quickly, which causes the high-temperature flue gases to not be able to fully contact and exchange heat with the cooking utensil, and further results in low thermal efficiency of the cooker.

[0054] In order to improve the utilization rate of the high-temperature flue gas to improve the thermal efficiency of the cooker, please refer toFigure 1 , Figure 3 and Figure 5 , further, the top of the second support 70 has a flow guiding surface 70a disposed around the central hole 102, and the top of the upper support 50 has a bearing surface 50a for supporting the item to be heated, and the flow guiding surface 70a is lower than the bearing surface 50a.

[0055] Specifically, place the cooking utensil on the upper support 50 so that the bottom surface of the cooking utensil abuts against the bearing surface 50a of the upper support 50. Since the height of the bearing surface 50a is higher than the flow guiding surface 70a of the second support 70, there is a gap between the flow guiding surface 70a and the bottom of the cooking utensil. Under the guiding action of the flow guiding surface 70a, the high-temperature flue gas flows from the high-temperature area to the low-temperature area along the gap between the flow guiding surface 70a and the bottom of the cooking utensil, and heats the cooking utensil during the flowing process, and finally flows to the outside of the first support 10 through the gap between the top of the first support 10 and the bottom of the cooking utensil, so that the high-temperature flue gas exchanges heat with the cooking utensil sufficiently.

[0056] Moreover, since the flame of the burner and the high-temperature flue gas generated by the burner will heat the top of the second support 70, the top of the second support 70 can also play a role in heat exchange with the cooking utensil to further improve the heating effect. In particular, when a far-infrared radiation structure is covered on the upper surface of the second support 70, the heat transferred from the high-temperature flue gas to the second support 70 can be radiated to the bottom of the cooking utensil via the far-infrared radiation structure, thereby further improving the thermal efficiency of the cooker.

[0057] It can be understood that in this embodiment, the gap between the flow guiding surface 70a and the bottom of the cooking utensil constitutes the smoke exhaust passage 103 of the high-temperature flue gas, and the high-temperature flue gas can flow from the inside to the outside along this smoke exhaust passage 103 until the outer circumference of the second support 70. If the width of the flow guiding surface 70a in the radial direction of the central hole 102 is wider, the length of the smoke exhaust passage 103 in this direction can be made larger, which is more conducive to the sufficient heat exchange between the high-temperature flue gas and the cooking utensil, and thus more conducive to improving the thermal efficiency of the cooker. However, considering that the larger the width of the flow guiding surface 70a, the more unfavorable it is to the local structural strength of the second support 70 in the area where the flow guiding surface 70a is located, and the greater the risk of incomplete combustion of the flame in the high-temperature area and the high content of carbon monoxide.

[0058] Therefore, optionally in this embodiment, the width of the flow guiding surface 70a in the radial direction of the central hole 102 ranges from 10 mm to 20 mm, for example, the values are 12 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, etc. In this way, the width of the flow guiding surface 70a is moderate, which is not only conducive to the full combustion of the flame and the sufficient heat exchange between the high-temperature flue gas and the cooking utensil, thus being conducive to improving the thermal efficiency of the cooker, but also can ensure that the second support 70 has sufficient structural strength.

[0059] Further optionally, the width of the flow guiding surface 70a in the radial direction of the central hole 102 ranges from 15 mm to 18 mm, and the material thickness of the first bracket 10 ranges from 1 mm to 1.5 mm. In this way, the first bracket 10 can not only have good structural strength, and its weight will not be too large, which is beneficial to reducing the manufacturing cost of the first bracket 10, but also enable the second bracket 70 to have a relatively wide flow guiding surface 70a. Of course, in other embodiments, the material thickness of the first bracket 10 can also be less than 1 mm or greater than 1.5 mm, for example, 3 mm.

[0060] In order to further improve the utilization rate of high-temperature flue gas, please refer to Figure 3 、 Figure 5 and Figure 8 , optionally, the top of the first bracket 10 has a smoke exhaust surface 11a, the smoke exhaust surface 11a surrounds the outer circumference of the flow guiding surface 70a, and the smoke exhaust surface 11a is lower than the bearing surface 50a. It can be understood that the gap between the flow guiding surface 70a and the bottom of the cooking utensil, and the gap between the smoke exhaust surface 11a and the bottom of the cooking utensil together form a smoke exhaust channel 103 for high-temperature flue gas. By adding the smoke exhaust surface 11a, the total length of the smoke exhaust channel 103 in the radial direction of the central hole 102 can be increased, thereby prolonging the heat exchange time between the flue gas and the bottom of the cooking utensil, and further improving the utilization rate of high-temperature flue gas. Of course, in other embodiments, the smoke exhaust surface 11a may not be provided.

[0061] Please refer to Figure 5 , optionally, the smoke exhaust surface 11a and the flow guiding surface 70a are arranged in a plane and are arranged in parallel with the plane where the central hole 102 is located. It should be noted that being arranged in parallel means being parallel and nearly parallel, that is, the axis of the central hole 102 is perpendicular or approximately perpendicular to the smoke exhaust surface 11a and the flow guiding surface 70a in space. In this way, a good guiding effect can be exerted on the flue gas in the smoke exhaust channel 103. Of course, in some other embodiments, it may also be that one of the smoke exhaust surface 11a and the flow guiding surface 70a is arranged in a plane, or the smoke exhaust surface 11a and the flow guiding surface 70a intersect with the plane where the central hole 102 is located in space. For example, the flow guiding surface 70a forms an angle of 10° to 20° with the plane where the central hole 102 is located. In other embodiments, the smoke exhaust surface 11a and the flow guiding surface 70a may also be arranged in a curved surface.

[0062] Please refer to Figure 5 and Figure 6Optionally, a buffer gap 104 is formed between the smoke exhaust surface 11a and the guide surface 70a. In this way, when the high-temperature smoke flows outward along the guide surface 70a of the second bracket 70, part of the airflow will be separated at the buffer gap 104, and vortex will be generated there, which can disrupt the originally stable laminar flow of the high-temperature smoke, which is conducive to prolonging the residence time of the high-temperature smoke in the smoke exhaust channel 103, thereby prolonging the heat exchange time between the high-temperature smoke and the bottom of the cooker. Of course, in other implementations, the buffer gap 104 may not be set. For example, the smoke exhaust surface 11a and the guide surface 70a are arranged to be connected with zero gap in the radial direction of the central hole 102.

[0063] See also Figure 5 and Figure 8 Furthermore, the smoke exhaust surface 11a is higher than the guide surface 70a, and the upper surface of the first bracket 10 also has a guide surface 11b connected to the inner periphery of the smoke exhaust surface 11a. The guide surface 11b extends downward and is separated from the guide surface 70a to form a buffer gap 104. The guide surface 11b is separated from the second bracket 70 to form a buffer cavity 105, and the buffer cavity 105 is connected to the lower side of the buffer gap 104.

[0064] In this way, on the one hand, since the smoke exhaust surface 11a is higher than the guide surface 70a, it can play a certain blocking role on the smoke flowing through the buffer gap 104; on the other hand, the high-temperature smoke is affected by the guide surface 11b and the buffer gap 104, and the smoke separated from the buffer gap 104 can enter the buffer cavity 105, which is conducive to the high-temperature smoke forming more and more significant vortices at the buffer gap 104, thereby further extending the heat exchange time between the high-temperature smoke and the bottom of the cooker. Of course, in other implementations, the buffer cavity 105 may not be provided. For example, the guide surface 11b extends from the inner periphery of the smoke exhaust surface 11a toward the central hole 102, and extends to abut against the lower surface of the upper side wall of the second bracket 70 opposite to the guide surface 70a.

[0065] Optionally, the guide surface 11b extends downwardly in a direction close to the central hole 102, and the minimum distance between the guide surface 70a and the guide surface 11b in the radial direction of the central hole 102 ranges from 5mm to 15mm. Specifically, the minimum distance is 6mm, 8mm, 10mm or 12mm.

[0066] It can be understood that the minimum distance between the flow guiding surface 70a and the guiding surface 11b in the radial direction of the central hole 102 is positively correlated with the width of the buffer gap 104. Therefore, if the value of this minimum distance is too small, the width of the buffer gap 104 will correspondingly be too small, which is not conducive to the generation of obvious and effective eddy currents of the flue gas at the buffer gap 104. If the value of this minimum distance is too large, the width of the buffer gap 104 will correspondingly be too large, which is likely to cause the high-temperature flue gas to be unable to flow smoothly along the smoke exhaust passage 103 and diffuse disorderly, and result in the high-temperature flue gas being unable to achieve the further heating effect on the cooking utensil as originally designed.

[0067] Optionally, the height difference between the smoke exhaust surface 11a and the bearing surface 50a ranges from 3 mm to 9 mm, and the height difference between the flow guiding surface 70a and the bearing surface 50a ranges from 3 mm to 9 mm. It can be understood that both the height difference between the smoke exhaust surface 11a and the bearing surface 50a and the height difference between the flow guiding surface 70a and the bearing surface 50a are positively correlated with the height of the smoke exhaust passage 103. Therefore, if the values of these two height differences are too small, it is not conducive to the smooth flow of the high-temperature flue gas. If the values of these two height differences are too large, the flow rate of the high-temperature flue gas is too large and it is not conducive to prolonging its heat exchange duration with the cooking appliance. Of course, in other embodiments, the height difference between the smoke exhaust surface 11a and the bearing surface 50a can also be less than 3 mm or greater than 9 mm, or the height difference between the flow guiding surface 70a and the bearing surface 50a can also be less than 3 mm or greater than 9 mm.

[0068] In the embodiment where the smoke exhaust surface 11a is higher than the flow guiding surface 70a, optionally, the height difference between the smoke exhaust surface 11a and the bearing surface 50a is 5 mm to 6 mm, and the height difference between the flow guiding surface 70a and the bearing surface 50a is 4 mm to 5 mm. In this way, the flow rate of the high-temperature flue gas in the smoke exhaust passage 103 can be effectively reduced.

[0069] Please refer to Figure 1 and Figure 3 , optionally, the center line of the smoke exhaust surface 11a extending along the circumferential direction of the central hole 102 is arranged as a regular polygon, and the center line of the flow guiding surface 70a extending along the circumferential direction of the central hole 102 is arranged as a circle. For example, the center line of the smoke exhaust surface 11a in this embodiment is a square. Of course, the center line of the smoke exhaust surface 11a can also be a regular pentagon, a regular hexagon, etc. Without loss of generality, the perimeter of a regular polygon is always greater than the perimeter of its inscribed circle. Therefore, designing the center line of the smoke exhaust surface 11a as a regular polygon can make the perimeter of the smoke exhaust surface 11a in the circumferential direction of the central hole 102 larger, which is conducive to increasing the equivalent length of the smoke exhaust passage 103 and the heat exchange area and duration between the high-temperature flue gas and the cooking utensil.

[0070] On the other hand, since the center line of the flow guiding surface 70a is circularly arranged, the center line of the buffer gap 104 located at the outer periphery of the flow guiding surface 70a is also approximately circular. As a result, when the high-temperature flue gas flows outward from the central hole 102 in different directions, vortices can be generated at approximately the same circumferential position (i.e., the position corresponding to the buffer gap 104), thereby making the flow field of the high-temperature flue gas in the smoke exhaust passage 103 more stable and concentrating the heat more evenly in the high-temperature area, which is beneficial to improving the thermal efficiency of the cooking appliance.

[0071] Of course, in other embodiments, the center line of the smoke exhaust surface 11a extending along the circumferential direction of the central hole 102 may also be a regular shape such as a circle, an ellipse or an inner polygon, or the center line of the flow guiding surface 70a extending along the circumferential direction of the central hole 102 may be a regular shape such as an outer polygon, an inner polygon or an ellipse. For example, the center lines of both the smoke exhaust surface 11a and the flow guiding surface 70a are circular; or the center lines of the smoke exhaust surface 11a and the flow guiding surface 70a are arranged in an irregular shape.

[0072] Please refer to Figure 3 , it can be understood that in an embodiment where the center line of the smoke exhaust surface 11a is a regular polygon and the center line of the flow guiding surface 70a is a circle, when the centers of the regular polygon and the circle coincide, the minimum distance between the flow guiding surface 70a and the guiding surface 11b in the radial direction of the central hole 102 corresponds to the center position of the side of the regular polygon. At the same time, the maximum distance between the flow guiding surface 70a and the guiding surface 11b in the radial direction of the central hole 102 corresponds to the corner (sharp corner) position of the regular polygon.

[0073] The structural form of the second bracket 70 has various types. For example, please refer to Figure 5 and Figure 7 , in an embodiment, the second bracket 70 includes a first ring plate 71 and a second ring plate 72 connected to the inner peripheral edge of the first ring plate 71. The second ring plate 72 extends downward and obliquely in the direction close to the central hole 102, and the flow guiding surface 70a is arranged on the upper surface of the first ring plate 71. In this way, the downward and obliquely extending second ring plate 72 can play a certain guiding role in the flame and high-temperature flue gas of the central hole 102, so that the flame can better spread under the cooking appliance and the high-temperature flue gas can flow more smoothly from the high-temperature area to the low-temperature area. Of course, in other embodiments, the second ring plate 72 may not be provided.

[0074] To improve the structural strength of the second support 70, further, the second support 70 further includes an outer strengthening flange 73 formed by bending downward from the outer peripheral edge of the first ring plate 71. In this way, the structural strength of the region where the flow guiding surface 70a is located can be improved, which is beneficial for the flow guiding surface 70a to better maintain its designed position and play a good flow guiding effect on the high-temperature flue gas. Optionally, in this embodiment, the second support 70 further includes an inner strengthening flange 74 formed by bending from the inner peripheral edge of the second ring plate 72. In this way, the structural strength of the second support 70 can be further improved. Of course, in other embodiments, only the outer strengthening flange 73 or the inner strengthening flange 74 can be provided, or neither the outer strengthening flange 73 nor the inner strengthening flange 74 is provided.

[0075] In the embodiment where there is a buffer gap 104 on the outer periphery of the flow guiding surface 70a, optionally, the outer strengthening flange 73 is configured to be formed by bending downward from the outer peripheral edge of the first ring plate 71. In this way, the outer strengthening flange 73 will not only not interfere with the process of the high-temperature flue gas generating vortices in the buffer gap 104, but also play a certain promoting effect on the generation of vortices. Optionally, in this embodiment, the upper surface of the outer strengthening flange 73 and the flow guiding surface 70a are smoothly transitioned. In this way, on the one hand, the intersection region between the outer strengthening flange 73 and the flow guiding surface 70a, and the outer strengthening flange 73 can jointly play the role of the wall attachment effect to promote the generation of more significant and more vortices of the high-temperature flue gas in the buffer gap 104; on the other hand, the second support 70 with a smoother outer surface and no sharp convex structure can reduce the risk of users being cut by the second support 70.

[0076] Of course, in other embodiments, the outer strengthening flange 73 can also be configured to be formed by bending upward from the outer peripheral edge of the first ring plate 71.

[0077] Please refer to Figure 5 , in the embodiment where a buffer cavity 105 is formed at an interval between the guiding surface 11b and the second support 70, optionally, the outer strengthening flange 73 and the first support 10 are spaced apart in the radial direction of the central hole 102, that is, there is a gap between the outer strengthening flange 73 and the guiding surface 11b, and this gap is a part of the buffer cavity 105. Of course, in other embodiments, the outer strengthening flange 73 and the guiding surface 11b can also be in contact with each other.

[0078] Optionally, the inner peripheral edge of the second ring plate 72 is bent upward to form an inner reinforcing flange 74, and the inner reinforcing flange 74 extends upward obliquely in a direction away from the first ring plate 71. In this way, the upwardly bent inner reinforcing flange 74 neither affects the expansion of the flame in the central hole 102 nor the flow of the high-temperature flue gas, and can jointly define an annular accommodating groove with the upper surface of the second ring plate 72. So that when the cookware overflows with liquid or food, the annular accommodating groove can play a certain role in accommodating these overflows and prevent these overflows from directly flowing to the central hole 102 and the burner. Of course, in other embodiments, the inner peripheral edge of the second ring plate 72 may also be bent downward to form the inner reinforcing flange 74.

[0079] Optionally, at least one of the upper surfaces of the first ring plate 71, the second ring plate 72, the outer reinforcing flange 73, and the inner reinforcing flange 74 is covered with a far-infrared radiation structure. For example, in this embodiment, the upper surfaces of the second brackets 70 are all covered with a far-infrared radiation structure, and the far-infrared radiation structure is configured as an enamel layer. In this way, not only can the second brackets 70 have better far-infrared radiation performance, but also they are easy to clean and more beautiful.

[0080] The second bracket 70 and the first bracket 10 have a gap in the axial direction of the central hole 102. In this way, the heat conduction phenomenon caused by the direct contact between the second bracket 70 and the first bracket 10 can be avoided, so that the heat of the second bracket 70 can be retained on its own structure as much as possible, which is beneficial to improving the thermal efficiency of the cooker. For example, please refer to Figure 5 , in the embodiment where the second bracket 70 has the second ring plate 72 and the inner reinforcing flange 74, the connection between the second ring plate 72 and the inner reinforcing flange 74 is the lowest point of the second bracket 70, and there is a gap in the vertical direction between this lowest point and the upper surface of the first bracket 10. Of course, in other embodiments, the lower surface of the second bracket 70 may also abut against the upper surface of the first bracket 10.

[0081] Please refer to Figure 1 and Figure 3 , in the embodiment where the center line of the smoke exhaust surface 11a is a regular polygon and the center line of the flow guiding surface 70a is a circle, optionally, the upper support 50 includes a second support 52 provided on the second bracket 70, and the second support 52 is disposed opposite to the corner of the smoke exhaust surface 11a. For example, in the Figure 3 shown embodiment, the center line of the smoke exhaust surface 11a is a square, and the second support 52 is distributed corresponding to the four corners (sharp corners) of the square. It can be understood that when the bottom surface of the cookware completely covers the flow guiding surface 70a and the smoke exhaust surface 11a, the length of the smoke exhaust channel 103 in the direction corresponding to the corner of the polygon is the largest, and the high-temperature flue gas flowing through this direction has a longer time for heat exchange with the cookware.

[0082] Correspondingly, the length of the smoke exhaust passage 103 in the direction corresponding to the center of the side of the polygon is the smallest. By arranging the second support 52 at other positions away from this direction, it is possible to avoid the second support 52 directly interfering with the high-temperature flue gas in this direction (i.e., corresponding to the center position of the side of the regular polygon), which is conducive to generating more and more significant eddy currents of the high-temperature flue gas in this direction, thereby prolonging the heat exchange duration of the high-temperature flue gas in this direction.

[0083] In this way, the high-temperature flue gas flowing outwards from the central hole 102 along different directions can basically achieve a better further heat exchange effect, thereby further improving the thermal efficiency of the cooker. Of course, in other embodiments, the second support 52 can also be arranged at a position opposite to the center of the side of the smoke exhaust surface 11a, or other positions.

[0084] Please refer to Figure 6 , further, the second support 52 includes an upper bearing portion 521. The upper bearing portion 521 is arranged on the upper surface of the second bracket 70, and the bearing surface 50a is arranged on the upper surface of the upper bearing portion 521. In this way, the second bracket 70 can play a good supporting role for the upper bearing portion 521.

[0085] In order to improve the adaptability of the pot support 101 so that the pot support 101 can be applicable to cooking utensils of more size specifications, please refer to Figure 1 and Figure 5 , further, the upper support 50 further includes a first support 51. The first support 51 is arranged on the top of the first bracket 10. The top surface of the upper bearing portion 521 is not higher than the top surface of the first support 51, and the inner edge of the projection area formed by the positive projection of the upper bearing portion 521 towards the plane where the central hole 102 is located is located within the central hole 102.

[0086] It can be understood that when the user uses a cooking utensil with a relatively large bottom width dimension, such as a flat pan with a diameter of 32 cm, the generally flat bottom surface of the cooking utensil will at least abut against the top surface of the first support 51 (when the top surface of the upper bearing portion 521 is flush with the top surface of the first support 51, it will also abut against the top surface of the upper bearing portion 521) and be supported by the first support 51. At this time, the height difference between the bottom surface of the cooking utensil and the burner conforms to the ideal design state, so that the flame and high-temperature flue gas generated by the burner can play a heat exchange role according to the ideal design state, and the thermal efficiency of the cooker can basically reach the ideal design goal.

[0087] When a user uses a cooking utensil with a relatively small bottom width dimension, such as a splashing oil pan with a pot mouth diameter of 14 cm, the bottom surface of the splashing oil pan cannot contact the first support 51, resulting in the user having to hold the splashing oil pan for heating. In the related art, the user can purchase a small-sized movable pot support 101 by himself / herself and place the movable pot support 101 on the first support 51 of the pot support 101 configured by the cooking appliance factory to use the movable pot support 101 to support the small-sized splashing oil pan. Since the movable pot support 101 is supported by the first support 51, the upper surface of the movable pot support 101 is significantly higher than the upper surface of the first support 51, so that the height difference between the bottom surface of the splashing oil pan and the burner is significantly higher than the designed state, that is, the splashing oil pan is lifted and away from the burner. Thus, the thermal efficiency of the cooking appliance cannot reach the ideal design goal when the splashing oil pan is heated, that is, when the user uses the movable pot support 101 supported by the first support 51 to support a small-sized cooking utensil, the flame and high-temperature flue gas generated by the burner cannot fully exchange heat with the bottom of the splashing oil pan, thereby resulting in a reduction in the thermal efficiency of the cooking appliance.

[0088] In the embodiment of the present utility model, by simultaneously providing the first support 51 and the second support 52 on the pot support 101, and making the inner edge of the upper bearing portion 521 extend above the central hole 102 and the top surface of the upper bearing portion 521 not higher than the top surface of the first support 51. Thus, when the user uses a small-sized cooking utensil, such as the above-mentioned splashing oil pan, the bottom surface of the splashing oil pan is supported by the top surface of the upper bearing portion 521, and is stably suspended above the burner, and can avoid the problem that the flame and high-temperature flue gas cannot fully exchange heat with the bottom of the splashing oil pan due to the obvious elevation of the splashing oil pan, that is, it can improve the thermal efficiency of the cooking appliance when the pot support 101 supports a small-sized cooking utensil.

[0089] Of course, in other embodiments, it may also be that the top surface of the upper bearing portion 521 is higher than the top surface of the first support 51, or the inner edge of the upper bearing portion 521 is located above the side of the central hole 102.

[0090] Please refer to Figure 5 , optionally in this embodiment, the top surface of the first support 51 and the top surface of the upper bearing portion 521 are arranged flush. Thus, when cooking utensils of different sizes are placed on the pot support 101, the height difference between their bottom surfaces and the burner can be basically kept the same, which is beneficial to maintaining the thermal efficiency of the cooking appliance at a relatively high level.

[0091] Please refer to Figure 5, in an embodiment where the second support 70 has an inner reinforcing flange 74, optionally, the upper bearing portion 521 extends towards the center of the central hole 102 and extends beyond the inner periphery of the second ring plate 72. Further optionally, the inner end surface of the upper bearing portion 521 extends beyond the inner periphery of the inner reinforcing flange 74. That is, a projection area is formed by the positive projection of the upper bearing portion 521 towards the plane where the inner periphery of the inner reinforcing flange 74 is located, and the inner edge of this projection area is located within the area enclosed by the inner periphery of the inner reinforcing flange 74. In this way, the upper bearing portion 521 can also play a good supporting role for cookware and pots with a small width dimension, so as to improve the adaptability of the pot support 101 and enhance the user experience.

[0092] Of course, in other embodiments, it may also be that the upper bearing portion 521 extends towards the center of the central hole 102 and extends beyond the inner periphery of the second ring plate 72, but does not extend beyond the inner periphery of the inner reinforcing flange 74; or, the upper bearing portion 521 extends towards the center of the central hole 102, and its inner end surface does not extend beyond the inner periphery of the second ring plate 72.

[0093] Please refer to Figure 1 , optionally, there are multiple second supports 52, and the multiple second supports 52 are arranged at intervals along the circumferential direction of the central hole 102. In this way, the multiple second supports 52 jointly support the cookware, which can improve the placement stability of the cookware.

[0094] Optionally, the diameter of the circle that is externally tangent to the inner peripheries of the multiple second supports 52 ranges from 10 mm to 16 mm, for example, taking values of 12 mm, 13 mm, or 14 mm. That is, the minimum width of the cookware that the second support 52 can support is from 10 mm to 16 mm.

[0095] Please refer to Figure 1 , optionally, there are multiple first supports 51, and the multiple first supports 51 are arranged at intervals along the circumferential direction of the central hole 102. In this way, the multiple first supports 51 jointly support the cookware, which can improve the placement stability of the cookware.

[0096] Please refer to Figure 3 , in an embodiment where the top surfaces of the first support 51 and the second support 52 are flush, optionally, the first support 51 and the second support 52 are staggeredly distributed in the radial direction of the central hole 102. In this way, for large-sized cookware, both the first support 51 and the second support 52 can play a supporting role for the cookware, and the positions of the supporting actions are more evenly distributed on the bottom surface of the cookware, which is beneficial to improving the placement stability of the cookware. Of course, in other embodiments, the first support 51 and the second support 52 may also be relatively distributed in the radial direction of the central hole 102.

[0097] Please refer to Figure 6, for the convenience of disassembling and cleaning the second bracket 70, further, the second support 52 further includes a lower support portion 523 connected to the upper support portion 521. The lower support portion 523 is located on the lower side of the second bracket 70 and is detachably connected to the first bracket 10. In this way, the second support 52 can be detachably mounted on the first bracket 10 through the lower support portion 523, so that the disassembly and installation of the second bracket 70 can be facilitated, and the first bracket 10 and the second bracket 70 can be separately and more comprehensively cleaned, and the problem that it is difficult to clean the dirt attached in the area with a small gap can be avoided. Secondly, since the lower support portion 523 is provided on the lower side of the second bracket 70, the overall structure of the second bracket 70 and the second support 52 is more compact. It can be understood that at this time, the second bracket 70 is configured as the movable pot bracket 101. In the embodiment where the upper support 50 includes the first support 51 and the second support 52, since the first bracket 10 has the first support 51, the user can selectively mount the second bracket 70 on the first bracket 10 according to usage habits and needs. Of course, in other embodiments, the lower support portion 523 may also be provided on the side of the second bracket 70.

[0098] Optionally, the lower surface of the lower support portion 523 abuts against the upper surface of the first bracket 10. That is, the second bracket 70 can be directly placed on the first bracket 10 through the lower support portion 523. When the second bracket 70 needs to be disassembled, it can be taken from the first bracket 10. In this way, the structure is simple and easy to implement, and the disassembly and assembly of the second bracket 70. Of course, in other embodiments, the lower support portion 523 may also be detachably mounted to the first bracket 10 by means of screwing or clamping.

[0099] Please refer to Figure 6 and Figure 8 , further, a positioning groove 111 is provided on the upper surface of the first bracket 10, and at least a part of the lower support portion 523 is provided in the positioning groove 111. In this way, the positioning groove 111 can play a certain limiting role on the lower support portion 523, so that the second bracket 70 can be placed more stably on the first bracket 10. Of course, in other embodiments, the positioning groove 111 may not be provided.

[0100] Optionally, at least a part of the positioning groove 111 is located on the lower side of the second ring plate 72. The lower support portion 523 extends toward the center of the central hole 102 and extends beyond the center of the upper support portion 521. In this way, the pressure from the cooking utensil received by the upper support portion 521 and the wall support force from the positioning groove 111 received by the lower support portion 523 can partially overlap or be adjacent in the radial direction of the central hole 102, so as to improve the placement stability of the second bracket 70. Of course, in other embodiments, the lower support portion 523 may also extend toward the center of the central hole 102 but not extend beyond the center of the upper support portion 521.

[0101] Please refer to Figure 8, Further, a plurality of reinforcing ribs 112 protrude from the upper surface of the first bracket 10. The plurality of reinforcing ribs 112 are arranged at intervals along the circumferential direction of the central hole 102, and positioning grooves 111 are formed by intervals between adjacent two reinforcing ribs 112. In this way, the structure is simple and easy to implement. Moreover, by adding the reinforcing ribs 112, the local structural strength of the first bracket 10 can be improved. Of course, in other embodiments, the reinforcing ribs 112 may not be provided.

[0102] Please refer to Figure 6 and Figure 8 , Further, an annular boss 113 also protrudes from the upper surface of the first bracket 10. The reinforcing ribs 112 and the bottom surface of the positioning grooves 111 are arranged on the top surface of the annular boss 113. In this way, the reinforcing ribs 112 are formed by drawing on the annular boss 113, which is beneficial to improving the forming yield rate of the first bracket 10 and can further improve the local structural strength of the first bracket 10. Of course, in other embodiments, the annular boss 113 may not be provided.

[0103] Further, the second support 52 further includes a connecting portion 522 intersecting with the upper bearing portion 521. The connecting portion 522 is arranged on the side surface of the second bracket 70. Optionally, in an embodiment where the second support 52 includes the upper bearing portion 521 and the lower supporting portion 523, the connecting portion 522 is connected between the upper bearing portion 521 and the lower supporting portion 523. That is, the lower supporting portion 523 is arranged opposite to the upper bearing portion 521, and the second support 52 is arranged in a substantially U-shaped structure. In this way, the second support 52 does not penetrate the second bracket 70, which is beneficial to improving the structural strength and stiffness of the second bracket 70. Of course, in other embodiments, the lower end of the upper bearing portion 521 may penetrate the second bracket 70 and be directly connected to the lower supporting portion 523.

[0104] Optionally, the upper bearing portion 521, the lower supporting portion 523 and the connecting portion 522 are integrally formed. In this way, the structure is simple and easy to implement. At the same time, the assembly process of the second support 52 and the second bracket 70 can be reduced, which is beneficial to improving the production efficiency of the pot bracket 101. Of course, in other embodiments, at least one of the upper bearing portion 521, the lower supporting portion 523 and the connecting portion 522 may be separately provided.

[0105] Please refer to Figure 6 , In an embodiment where the second bracket 70 includes a first ring plate 71 and an outer reinforcing flange 73 bent downward from the outer peripheral edge of the first ring plate 71, optionally, the upper bearing portion 521 is connected to the first ring plate 71, and the connecting portion 522 is connected to the outer reinforcing flange 73. In this way, the connection strength between the second support 52 and the second bracket 70 can be improved, and the second support 52 also plays a supporting role on the outer reinforcing flange 73, so that the outer reinforcing flange 73 is less likely to be deformed.

[0106] Optionally, the second support 52 is fixed to the second bracket 70 by welding. In this way, the connection strength between the second support 52 and the second bracket 70 can be improved, and the structure is simple and easy to implement. For example, in this embodiment, the connecting portion 522 is fixed to the outer reinforcing flange 73 by welding, and the upper bearing portion 521 is fixed to the first ring plate 71 by welding. Of course, in other embodiments, it may also be that only the connecting portion 522 is fixed to the outer reinforcing flange 73 by welding, or only the upper bearing portion 521 is fixed to the first ring plate 71 by welding. It is also possible that the second support 52 is installed on the second bracket 70 by means of screwing or clamping.

[0107] Please refer to Figure 2 and Figure 5 , in an embodiment, the first bracket 10 includes a separately provided upper plate 11 and a lower plate 12, and a cavity 10a is formed between the upper plate 11 and the lower plate 12. Among them, the top of the first bracket 10 is located on the upper plate 11. That is, in the embodiment where the first bracket 10 has an exhaust smoke surface 11a, the exhaust smoke surface 11a is provided on the upper plate 11. In this way, the cavity 10a can play a certain heat storage role, so that the heat of the upper plate 11 can stay on its own structure more, which is beneficial to improving the thermal efficiency of the cooker. Of course, in other embodiments, the first bracket 10 may not be provided with the cavity 10a.

[0108] To facilitate cleaning of the exposed outer surfaces of the upper plate 11 and the lower plate 12, optionally, the upper surface of the upper plate 11 and the lower surface of the lower plate 12 are covered with an enamel layer (not shown in the drawings). That is, the enamel layer is formed on the upper surface of the upper plate 11 and the lower surface of the lower plate 12 by using the enamel process. The enamel layer is not only easy to clean and maintain, but also can improve the aesthetics of the first bracket 10. And, in the embodiment where the upper surface of the second bracket 20 also has an enamel layer, since the outer surfaces of the upper plate 11, the lower plate 12 and the second bracket 20 all have enamel layers, the overall appearance of the first bracket 10 and the second bracket 20 can be made more consistent. Of course, in other embodiments, only the upper surface or the lower surface of the upper plate 11 may be covered with an enamel layer.

[0109] It can be understood that when using the cooker, the upper plate 11 is in a high-temperature heat storage state. If more heat of the upper plate 11 can be transferred to the cooking utensil in the form of thermal radiation, the thermal efficiency of the cooker can be further improved. Therefore, further, the enamel layer covering the upper surface of the upper plate 11 is configured as a far-infrared radiation enamel layer. In this way, through the far-infrared radiation enamel layer, more energy of the upper plate 11 can be converted into thermal radiation energy and radiated to the cooking utensil. Of course, in other embodiments, ordinary enamel materials can also be used to manufacture the enamel layer.

[0110] Please refer to Figure 5 and Figure 6, Further, the pot support further includes a support plate 22 disposed in the cavity 10a, a lower support 40 disposed on the lower plate 12, and a first fastener 61. The support plate 22 is pre-fixed to the upper plate 11, the lower support 40 is pre-fixed to the lower plate 12, and then one end of the first fastener 61 passes through the lower support 40 and extends into the cavity 10a and is connected to the support plate 22, thereby assembling the upper plate 11 and the lower plate 12 into one body to form the first support 10.

[0111] Specifically and optionally, the support plate 22 is fixed to the upper plate 11 by welding, and the lower support 40 is attached to the lower plate 12 by a second fastener 62. Wherein, the first fastener 61 and the second fastener 62 can be configured as bolts or rivets, etc. Of course, in other embodiments, the support plate 22 can also be fixed to the upper plate 11 by riveting or screwing, etc., or the lower support 40 can be directly fixed to the lower plate 12 by welding.

[0112] Please refer to Figure 5 and Figure 6 , Further, the pot support further includes a reflector 31 disposed in the cavity 10a. The reflector 31 reflects the heat transferred downward by the upper plate 11 back to the upper plate. In this way, the heat dissipation rate of the upper plate 11 can be reduced, and the heat can be retained on the upper plate 11 as much as possible, thereby improving the thermal efficiency of the cooker. Specifically and optionally, the middle part of the reflector 31 is sleeved on the end of the lower support 40 extending into the cavity 10a and is abutted by the support plate 22.

[0113] It is worth mentioning that in the embodiment where the outer surface of the upper plate 11 has an enamel layer, since the reflector 31 and the upper plate 11 are separately provided and are assembled into one body by the first fastener 61, rather than the form of welding the reflector 31 to the upper plate 11, the reflector 31 will not follow the upper plate 11 to perform the enameling process together, and the problem that the reflector 31 turns black due to the high-temperature environmental conditions of the enameling process and the reflection performance fails can be avoided.

[0114] The present invention also provides a cooker, which includes the aforementioned pot support. The specific structure of the pot support refers to the above embodiments. Since this cooker adopts all the technical solutions of the above all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated one by one here.

[0115] The above description is only an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied to other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A pot support, characterized in that: include: A first bracket is surrounded by a central hole, and the top of the first bracket has a smoke exhaust surface; A second bracket is arranged on the first bracket, the top of the second bracket has a guide surface arranged around the central hole, and the smoke exhaust surface surrounds the outer circumference of the guide surface; as well as An upper support is arranged on the top of the first support and / or the second support, and the top of the upper support has a bearing surface for supporting the heated component, and the guide surface and the smoke exhaust surface are lower than the bearing surface.

2. The pot support according to claim 1, characterized in that: The smoke exhaust surface and the flow guide surface are spaced apart from each other in the radial direction of the central hole to form a buffer gap.

3. The pot support according to claim 2, characterized in that: The smoke exhaust surface is higher than the guide surface. The upper surface of the first bracket also has a guide surface connected to the inner periphery of the smoke exhaust surface. The guide surface extends downward and is spaced apart from the guide surface to form the buffer gap. A buffer cavity is formed between the guide surface and the second bracket, and the buffer cavity is connected to the lower side of the buffer gap.

4. The pot support according to claim 3, characterized in that: The guide surface extends obliquely downward in a direction close to the central hole, and the minimum spacing between the flow guide surface and the guide surface in the radial direction of the central hole ranges from 5 mm to 15 mm.

5. The pot support according to claim 1, characterized in that: The height difference between the smoke exhaust surface and the bearing surface ranges from 3 mm to 9 mm; And / or, the height difference between the guide surface and the bearing surface ranges from 3 mm to 9 mm; And / or, the smoke exhaust surface and / or the flow guide surface are arranged in parallel with the plane where the central hole is located.

6. The pot support according to claim 1, characterized in that: The center line of the smoke exhaust surface extending along the circumferential direction of the central hole is arranged in a regular polygonal shape, and the center line of the flow guide surface extending along the circumferential direction of the central hole is arranged in a circular shape.

7. The pot support according to claim 6, characterized in that: The upper support includes a second support arranged on the second bracket, and the second support is arranged opposite to the corner of the smoke exhaust surface.

8. The pot support according to claim 1, characterized in that: The second bracket includes a first ring plate and a second ring plate connected to the inner periphery of the first ring plate, the second ring plate extends downwardly in a direction close to the central hole, and the guide surface is arranged on the upper surface of the first ring plate.

9. The pot support according to claim 8, characterized in that: The second bracket further comprises an outer reinforcing flange bent downward from the outer periphery of the first ring plate, and the upper surface of the outer reinforcing flange and the guide surface are smoothly transitioned; And / or, the second bracket further includes an inner reinforcing flange formed by bending from the inner periphery of the second ring plate.

10. A cooking appliance, characterized in that: The invention comprises a pot support as claimed in any one of claims 1 to 9.

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