Pot rack and stove

Abstract

The pot rack comprises a pot rack body and a fin type heat exchanger, the pot rack body is annularly arranged, a combustion cavity is defined by the inner side of the pot rack body, the fin type heat exchanger is connected to the bottom of the pot rack body and comprises a plurality of heat exchange fins, and the heat exchange fins are arranged in the circumferential direction of the pot rack at intervals; the heat exchange fins are arranged in the combustion cavity, so that secondary air exchanges heat with the heat exchange fins in the process of entering the combustion cavity from the bottom of the pot rack main body, and an included angle is formed between the extending direction of each heat exchange fin and the radial direction of the pot rack main body. According to the technical scheme, the combustion efficiency of the combustor of the stove is effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of kitchen appliances, and in particular to a pot rack and a stove using the pot rack. Background Art

[0002] The pot support of the stove is used to support the pot and ensure that secondary air can pass through the pot support to flow to the burner of the stove to ensure combustion efficiency. However, in the related art, the combustion efficiency of the burner is low, resulting in excessive energy consumption of the burner. Utility Model Content

[0003] The embodiments of the present application provide a pot rack and a stove, which can effectively improve the combustion efficiency of the burner of the stove.

[0004] In a first aspect, an embodiment of the present application provides a pot stand, the pot stand comprising:

[0005] The pot support body is arranged in a ring shape, and a combustion chamber is arranged on the inner side; and

[0006] a fin heat exchanger connected to the bottom of the pot rack body and comprising a plurality of heat exchange fins, wherein the plurality of heat exchange fins are arranged at intervals along the circumference of the pot rack so that the secondary air exchanges heat with the heat exchange fins in the process of entering the combustion chamber from the bottom of the pot rack body;

[0007] Wherein, the extension direction of each of the heat exchange fins is arranged at an angle with the radial direction of the pot rack body.

[0008] In some of the embodiments, each of the heat exchange fins extends from the outside to the inside toward the combustion chamber, and the heat exchange fins are tilted relative to the radial direction passing through the heat exchange fins, and the tilting directions of different heat exchange fins are consistent.

[0009] In some embodiments, the angle between the extension direction of the heat exchange fin and the radial direction passing through the head end thereof is α, and α is greater than or equal to 20 degrees and less than or equal to 60 degrees.

[0010] In some embodiments, for any two adjacent heat exchange fins, their projections on the inner contour line of the pot support body overlap.

[0011] In some embodiments, the projection of the heat exchange fin inwardly onto the inner contour line of the pan support body has a first arc length, and a ratio of the first arc length to the total length of the inner contour line is greater than or equal to 0.03 and less than or equal to 0.05.

[0012] In some embodiments, the pot support body has an inner side surface arranged toward the combustion chamber, and the end of each of the heat exchange fins extending from the outside to the inside toward the combustion chamber exceeds the inner side surface to partially extend into the combustion chamber.

[0013] In some of the embodiments, the pot support body further has an outer side surface facing away from the combustion chamber, and the head end of each of the heat exchange fins extending from the outside to the inside toward the combustion chamber does not exceed the outer side surface.

[0014] In some embodiments, it also includes:

[0015] A plurality of supporting legs are connected to the pot frame body at intervals along the circumference of the pot frame and are arranged at intervals from the heat exchange fins;

[0016] Wherein, the extension direction of the supporting leg passes through a heat exchange fin adjacent to the pot rack in the circumferential direction thereof.

[0017] In some embodiments, along the height direction of the pot support, the bottom of the support leg is at the same height as the bottom of the heat exchange fin, or the bottom of the support leg is lower than the bottom of the heat exchange fin.

[0018] In some embodiments, the pot rack has concentric circles with the central axis of the pot rack as the center and passing through all the heat exchange fins, and the arc lengths of adjacent heat exchange fins on the concentric circles are equal.

[0019] In some embodiments, the extension directions of any two adjacent heat exchange fins are arranged at an angle, and the angle between the extension directions of any two adjacent heat exchange fins is equal.

[0020] In some embodiments, the angle between the extension directions of any two adjacent heat exchange fins is greater than or equal to 5 degrees and less than or equal to 30 degrees.

[0021] In some embodiments, along the radial direction pointing to the central axis of the pot support body, the distance between two adjacent heat exchange fins gradually decreases.

[0022] In some embodiments, it also includes:

[0023] A support plate is connected to the bottom end of each of the heat exchange fins away from the pot rack body.

[0024] In some embodiments, when projected along the height direction of the pot rack, the projection of each of the heat exchange fins is within the support plate.

[0025] In some embodiments, the support plate is annular, and each of the heat exchange fins extends from the outside to the inside toward the combustion chamber, and the end of each of the heat exchange fins extending from the outside to the inside toward the combustion chamber extends to the inner edge of the support plate; and / or, the head end of each of the heat exchange fins extending from the outside to the inside of the combustion chamber does not extend to the outer edge of the support plate.

[0026] In some embodiments, the support plate and the plurality of heat exchange fins are an integral structure.

[0027] In some embodiments, the support plate is provided with a plurality of avoidance openings;

[0028] The pot rack further comprises a plurality of supporting legs, which are connected to the pot rack body at intervals along the circumference of the pot rack and are arranged at intervals from the heat exchange fins;

[0029] Among them, one of the supporting legs is correspondingly inserted into one of the avoidance openings.

[0030] In some embodiments, the heat exchange fin is provided with a spoiler, and at the spoiler, spaces on opposite sides of the heat exchange fin are connected.

[0031] In some embodiments, the spoiler portion includes a spoiler notch, which is disposed at least at one of the upper edge and the lower edge of the heat exchange fin and communicates with spaces on opposite sides of the heat exchange fin; and / or,

[0032] The spoiler portion includes a louver structure, and the louver structure defines a spoiler airway communicating with spaces on two opposite sides of the heat exchange fin.

[0033] In some embodiments, the heat exchange fins extend from the outside to the inside toward the combustion chamber; the spoiler includes:

[0034] The at least two louver structures include a first louver structure and a second louver structure, wherein the first louver structure and the second louver structure are arranged along the extension direction of the heat exchange fins and are respectively used to guide the airflow to different sides of the heat exchange fins.

[0035] In some embodiments, the spoiler portion includes the louver structure and at least two spoiler notches, the at least two spoiler notches are respectively arranged at the upper edge and the lower edge of the heat exchange fin, and the louver structure is arranged between the at least two spoiler notches.

[0036] In some of the embodiments, the shape of each of the heat exchange fins is configured to be straight, curved, wavy or broken line; and / or, the height of each of the heat exchange fins is greater than or equal to 5 mm and less than or equal to 25 mm.

[0037] In a second aspect, an embodiment of the present application provides a stove, the stove comprising a burner; and

[0038] As described above, the pot support body surrounds the outer side of the burner

[0039] Based on the pot rack and stove of the embodiment of the present application, by providing heat exchange fins at the bottom of the pot rack body, and the extension direction of the heat exchange fins is arranged at an angle with the radial direction of the pot rack body, the pot rack of the embodiment has at least the following technical effects:

[0040] First, heat is exchanged with the secondary air through the heat exchange fins to preheat the secondary air. In this way, not only can the heat radiated from the flame to the pot rack body be brought back to the combustion chamber through the secondary air to supplement the flame, thereby realizing heat recovery and improving the combustion efficiency of the burner of the stove, but the temperature of the pot rack body can also be reduced by the fin heat exchanger, effectively improving the high-temperature ablation of the pot rack body. At the same time, the supplementary effect of the secondary air on the burner flame can be effectively improved, so that the carbon monoxide generated by the burner during operation can be better converted into carbon dioxide, reducing the emission of smoke to ensure the health safety of users.

[0041] Secondly, the extension direction of the heat exchange fins in this embodiment is set at an angle with the radial direction of the pot rack body. Compared with the form in which the heat exchange fins extend along the radial direction of the pot rack body in the related art, this embodiment can increase the length of the heat exchange fins by inclining the heat exchange fins, so that when the secondary air flows through the gap between two adjacent heat exchange fins, the heat exchange area with the heat exchange fins can be increased, thereby effectively improving the heat exchange efficiency between the secondary air and the heat exchange fins. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0043] Figure 1 A schematic diagram of the connection structure between an external cooker and an embodiment of the cooker of the present application;

[0044] Figure 2 for Figure 1 The structural schematic diagram of a stove embodiment shown;

[0045] Figure 3 for Figure 2 The structural schematic diagram of an embodiment of a pot rack shown;

[0046] Figure 4 for Figure 3 The exploded structural diagram of the pot stand shown;

[0047] Figure 5 for Figure 3 A schematic structural diagram of the pot rack from another perspective shown;

[0048] Figure 6 for Figure 3 The schematic diagram of the connection between the pot support body and the fin heat exchanger shown;

[0049] Figure 7 for Figure 3 The schematic diagram of the connection between the support plate and the fin heat exchanger shown;

[0050] Figure 8 for Figure 3 A schematic structural diagram of an embodiment of a heat exchange fin is shown.

[0051] Description of Figure Numbers:

[0052] 1000, stove; 100, pot rack; 10, pot rack body; 10a, combustion chamber; 101, top; 102, bottom of pot rack body; 103, inner side; 104, outer side; 105, inner contour; 12, fin heat exchanger; 121, heat exchange fin; 1211, head end; 1212, end; 122, spoiler; 1221, louver structure; 1222, first louver structure; 1223, second louver structure; 1224, spoiler airway; 1225, spoiler notch; 50, pot support foot; 60, support leg; 80, support plate; 80a, avoidance; 81, inner edge; 82, outer edge; 200, burner; 2000, pot.

[0053] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0054] In order to make the objectives, technical solutions and advantages of the present application clearer, the following part will further describe the embodiments of the present application in detail in conjunction with the accompanying drawings.

[0055] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0056] In the description of the present application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0058] Please refer to Figure 1 to Figure 2 The present application proposes a stove 1000. In the embodiment of the present application, the stove 1000 includes a pot rack 100 and a burner 200. The pot rack 100 is used to be placed on a stove (not shown in the figure) and to support the pot 2000 to prevent the pot 2000 from sliding or tipping over during the heating process, reduce the occurrence of accidental injuries, and ensure the stability of the cooking process. In addition, the pot rack 100 surrounds the outer side of the burner 200 and forms a combustion chamber 10a. In this way, the flame generated by the burner 200 during the working process will pass through the combustion chamber 10a to contact the bottom of the pot 2000 to achieve heating of the pot 2000. In addition, under the surrounding arrangement of the pot rack 100, the heat of the burner 200 can be concentrated and transferred in the direction of the pot 2000, preventing the heat from leaking out, so that the heat of the burner 200 can fully act on the pot 2000.

[0059] In order to improve the combustion efficiency of the burner 200 by means of the pot support 100, please refer to Figures 3 to 5 Specifically, the pot rack 100 may include a pot rack body 10 and a fin heat exchanger 12 .

[0060] The pot support body 10 is arranged in an annular shape, for example, it can be arranged in a circular ring shape, an elliptical ring shape or a square ring shape, and the pot support body 10 can be made of cast iron, enamel or galvanized materials with advantages of high temperature resistance and good strength. The pot support body 10 surrounds the outer side of the burner 200, and the inner side is surrounded by the above-mentioned combustion chamber 10a.

[0061] The fin heat exchanger 12 is connected to the bottom of the pot rack body 10. It can be understood that when the burner 200 is in operation, the heat radiation generated by the flame thereof will act on the pot rack body 10 surrounding the outside of the burner 200, thereby indirectly heating the pot rack body 10. Furthermore, the heat on the pot rack body 10 will also be exchanged with the fin heat exchanger 12 in a heat exchange manner, thereby increasing the temperature of the fin heat exchanger 12.

[0062] It can be understood that the secondary air can enter the combustion chamber 10a through the bottom of the pot rack body 10 to supplement the flame of the burner 200 so that the flame can burn fully. Therefore, in the process of the secondary air entering the combustion chamber 10a from the bottom of the pot rack body 10, the secondary air can exchange heat with the heat exchange fins 121 to increase its own temperature. In this way, the secondary air can be preheated through the heat exchange fins 121 before it supplements the flame of the burner 200.

[0063] The fin heat exchanger 12 includes a plurality of heat exchange fins 121, so that the secondary air can exchange heat with the heat exchange fins 121 in the process of entering the combustion chamber 10a from the bottom of the pot rack body 10. The shape of the heat exchange fins 121 can be formed into a straight line, an arc, a wave or a broken line, wherein the heat exchange fins 121 in the shape of a straight line and an arc are more regular in shape, so as to facilitate manufacturing and forming, and the heat exchange fins 121 in the shape of a wave or a broken line form a bend in the flow path of the secondary air on the heat exchange fins 121, so as to appropriately reduce the flow rate of the secondary air, increase the heat exchange time between the secondary air and the heat exchange fins 121, so as to improve the heat exchange effect of the heat exchange fins 121 on the secondary air. In addition, the material of the heat exchange fins 121 can be a metal material with better thermal conductivity such as copper and aluminum, and this embodiment does not limit this.

[0064] In actual use, both the outer ring fire cover and the inner ring fire cover of the burner 200 are arranged in a circular ring shape, and the multiple fire outlet holes on the outer ring fire cover and the inner ring fire cover are arranged at intervals along the circumference, so the secondary air will flow in at various positions along the circumference of the pot rack 100 to correspond to the positions of the multiple fire outlet holes. Based on this, in this embodiment, the multiple heat exchange fins 121 are arranged at intervals along the circumference of the pot rack 100, so that the secondary air at various positions along the circumference of the pot rack 100 can exchange heat with the heat exchange fins 121, thereby improving the uniformity of the secondary air supplementing the flame of the burner 200.

[0065] See also Figure 6 , wherein the extension direction of each heat exchange fin 121 is set at an angle with the radial direction of the pot rack body 10, for example, the specific value of the angle can be 10 degrees, 20 degrees, 30 degrees, 40 degrees, 50 degrees, 60 degrees or 70 degrees, etc., which is not limited in this embodiment.

[0066] In summary, in this embodiment, the heat exchange fins 121 are arranged at the bottom of the pot rack body 10, and the extension direction of the heat exchange fins 121 is arranged at an angle with the radial direction of the pot rack body 10, so that the pot rack 100 of this embodiment has at least the following technical effects:

[0067] First, heat is exchanged with the secondary air through the heat exchange fins 121 to preheat the secondary air. In this way, not only can the heat radiated by the flame to the pot rack body 10 be brought back to the combustion chamber 10a through the secondary air to supplement the flame, thereby realizing heat recovery and improving the combustion efficiency of the burner 200 of the stove 1000, but the temperature of the pot rack body 10 can also be reduced by the fin heat exchanger 12, effectively improving the high-temperature ablation phenomenon of the pot rack body 10. At the same time, the supplementary effect of the secondary air on the flame of the burner 200 can be effectively improved, so that the carbon monoxide generated by the burner 200 during operation can be better converted into carbon dioxide, reducing the emission of smoke to ensure the safety of users.

[0068] Secondly, the extension direction of the heat exchange fins 121 of the present embodiment is set at an angle with the radial direction of the pot rack body 10. Compared with the radial extension of the heat exchange fins 121 along the pot rack body 10 in the related art, the present embodiment can increase the length of the heat exchange fins 121 by inclining the heat exchange fins 121, so that when the secondary air flows through the gap between two adjacent heat exchange fins 121, the heat exchange area with the heat exchange fins 121 can be increased, thereby effectively improving the heat exchange efficiency between the secondary air and the heat exchange fins 121.

[0069] Please refer to Figures 1 to 3 In some embodiments, the pot rack 100 further includes pot legs 50, which are used to support the bottom of the pot 2000. The pot legs 50 may be in the shape of long strips, increasing the connection area between the pot legs 50 and the bottom of the pot 2000, so as to improve the stability of the pot 2000 supported by the pot legs 50, and the pot legs 50 may be made of a material with high temperature resistance such as cast iron, which is not limited in this embodiment.

[0070] There are multiple pot legs 50, and the multiple pot legs 50 are connected to the top 101 of the pot rack body 10 along the circumference of the pot rack body 10. In this way, the supporting effect of the pot 2000 can be improved along the circumference of the pot rack body 10.

[0071] Please refer to Figures 4 to 6In some embodiments, each heat exchange fin 121 extends from the outside to the inside toward the combustion chamber 10a, and the heat exchange fin 121 is tilted relative to the radial direction passing through itself, and the tilting direction is consistent for different heat exchange fins 121. For example, each heat exchange fin 121 can be tilted counterclockwise or clockwise.

[0072] Thus, compared with different heat exchange fins 121 with inconsistent inclination directions, for example, one of two adjacent heat exchange fins 121 is inclined clockwise and the other is inclined counterclockwise, this embodiment can reduce the occupied area of ​​the two adjacent heat exchange fins 121 at the bottom of the pot rack body 10, improve the utilization rate, increase the number of heat exchange fins 121, thereby increasing the total contact area between the fin heat exchanger 12 and the secondary air, and further improve the preheating effect of the fin heat exchanger 12 on the secondary air. In other embodiments, the inclination directions of different heat exchange fins 121 can be set to be inconsistent, and this embodiment does not limit this.

[0073] Please continue reading Figure 6 Further, the angle between the extension direction of the heat exchange fin 121 and the radial direction passing through the head end 1211 thereof is α, and α is greater than or equal to 20 degrees and less than or equal to 60 degrees. For example, the specific value of α can be 20 degrees, 30 degrees, 40 degrees, 50 degrees or 60 degrees, etc., and this embodiment does not limit this.

[0074] When 20 degrees ≤ α ≤ 60 degrees, not only can the secondary air flow from the gap between two adjacent heat exchange fins 121 to the combustion chamber 10a with its flow direction as far as possible toward the fire outlet corresponding to its flow direction, so as to improve the effect of secondary air on flame supplementary combustion, but it can also ensure that the heat exchange fins 121 have a longer length, thereby increasing the heat exchange area between the heat exchange fins 121 and the secondary air, thereby improving the heat exchange efficiency between the heat exchange fins 121 and the secondary air.

[0075] When α is greater than 60 degrees, the inclination angle of the heat exchange fins 121 will be too large, resulting in the secondary air flowing to the combustion chamber 10a through the gap between two adjacent heat exchange fins 121, and the flow direction is set at an angle with the direction of the corresponding fire outlet, and the angle is too large, affecting the effect of the secondary air on the flame supplementary combustion. When α is less than 20 degrees, the extension length of the heat exchange fins 121 on the bottom of the pot rack body 10 will be too short, resulting in a small heat exchange area between the heat exchange fins 121 and the secondary air, affecting the heat exchange efficiency between the heat exchange fins 121 and the secondary air.

[0076] Of course, in other embodiments, α may be greater than or equal to 10 degrees and less than or equal to 70 degrees, and this embodiment does not limit this.

[0077] In some embodiments, the height of each heat exchange fin 121 is greater than or equal to 5 mm and less than or equal to 25 mm. For example, the specific value of the height of each heat exchange fin 121 can be 5 mm, 10 mm, 15 mm, 20 mm or 25 mm, etc., which is not limited in this embodiment.

[0078] When the height of each heat exchange fin 121 is greater than or equal to 5 mm and less than or equal to 25 mm, it is possible to ensure the heat exchange area between the heat exchange fin 121 and the secondary air while preventing the overall height of the pot rack 100 from being too high, thereby preventing the bottom of the pot 2000 placed on the pot support 50 from being too far away from the flame of the burner 200 and affecting the heating effect of the burner 200 on the pot 2000.

[0079] When the height of the heat exchange fin 121 is less than 5 mm, the heat exchange area between the heat exchange fin 121 and the secondary air is small, resulting in a low heat exchange efficiency between the heat exchange fin 121 and the secondary air, which in turn affects the combustion efficiency of the burner 200. When the height of the heat exchange fin 121 is greater than 25 mm, the height of the fin heat exchanger 12 is high, which in turn makes the overall height of the pot rack 100 too high, which will cause the distance between the flame of the burner 200 and the bottom of the pot 2000 to be too large, reducing the heating effect of the burner 200 on the pot 2000.

[0080] Of course, in other embodiments, the height of each heat exchange fin 121 may be greater than or equal to 1 mm and less than or equal to 40 mm, and this embodiment does not impose any limitation on this.

[0081] See also Figure 6 In some embodiments, for any two adjacent heat exchange fins 121, their projections on the inner contour line 105 of the pot rack body 10 overlap. In this way, when the secondary air flows radially into the gap between the two adjacent heat exchange fins 121, it can first flow through the surface of one heat exchange fin 121. Under the action of the surface, the secondary air will be refracted to flow to the surface of the other heat exchange fin 121. In this way, the contact area between the secondary air and the two adjacent heat exchange fins 121 can be effectively increased, and when the secondary air is refracted by the surface of the heat exchange fin 121, the flow rate of the secondary air can be reduced, so that the secondary air flows through the heat exchange fin 121 for a longer time, thereby increasing the heat exchange time between the secondary air and the heat exchange fin 121, and thus improving the heat exchange efficiency of the two.

[0082] Of course, in other embodiments, for any two adjacent heat exchange fins 121 , their projections on the inner contour line 105 of the pot rack body 10 may not overlap, and this embodiment does not limit this.

[0083] See also Figure 6In some embodiments, the projection of the heat exchange fin 121 onto the inner contour line 105 of the pot support body 10 has a first arc length, and the ratio of the first arc length to the total length of the inner contour line 105 is greater than or equal to 0.03 and less than or equal to 0.05. For example, the specific value of the ratio of the first arc length to the total length of the inner contour line 105 can be 0.03, 0.035, 0.04, 0.045 or 0.05, etc., and this embodiment is not limited to this.

[0084] When the ratio of the first arc length to the total length of the inner contour line 105 is greater than or equal to 0.03 and less than or equal to 0.05, not only can the length of the heat exchange fins 121 be guaranteed to increase the heat exchange area between the heat exchange fins 121 and the secondary air, but also the secondary air can flow from the gap between two adjacent heat exchange fins 121 to the combustion chamber 10a. Its flow direction can be as much as possible toward the fire outlet corresponding to its flow direction, so as to improve the effect of the secondary air on the flame re-combustion.

[0085] When the ratio of the first arc length to the total length of the inner contour line 105 is less than 0.03, the length of the heat exchange fin 121 will be smaller, which will result in a smaller heat exchange area between the heat exchange fin 121 and the secondary air, thereby affecting the heat exchange efficiency between the heat exchange fin 121 and the secondary air. When the ratio of the first arc length to the total length of the inner contour line 105 is greater than 0.05, the inclination angle of the heat exchange fin 121 will be too large, resulting in the secondary air flowing through the gap between two adjacent heat exchange fins 121 to the combustion chamber 10a, and the flow direction of the secondary air is set at an angle with the direction of the corresponding flow direction of the fire outlet, and the angle is too large, affecting the effect of the secondary air on the flame supplementary combustion.

[0086] Of course, in other embodiments, the ratio of the first arc length to the total length of the inner contour line 105 may be greater than or equal to 0.01 and less than or equal to 0.07, and this embodiment does not limit this.

[0087] See also Figure 6 In some embodiments, the pot support body 10 has an inner side surface 103 disposed toward the combustion chamber 10a, and the end 1212 of each heat exchange fin 121 extending from the outside to the inside toward the combustion chamber 10a exceeds the inner side surface 103 to partially extend into the combustion chamber 10a. In this way, compared with the form in which the end 1212 of the heat exchange fin 121 does not exceed the inner side surface 103, the extension length of the heat exchange fin 121 in this example is longer, which can increase the heat exchange area of ​​the heat exchange fin 121 between the secondary air and the heat exchange fin 121, thereby effectively improving the heat exchange efficiency between the secondary air and the heat exchange fin 121.

[0088] Of course, it should be noted that the present application is not limited to this. In other embodiments, the end 1212 of each heat exchange fin 121 extending from the outside to the inside toward the combustion chamber 10a may not exceed the inner side surface 103, or, the end 1212 of each heat exchange fin 121 extending from the outside to the inside toward the combustion chamber 10a may extend to the connection between the inner side surface 103 and the bottom of the pot rack body 10.

[0089] See also Figure 6 In some embodiments, the pot support body 10 further has an outer side surface 104 facing away from the combustion chamber 10a, and the head end 1211 of each heat exchange fin 121 extending from the outside to the inside toward the combustion chamber 10a does not exceed the outer side surface 104. Since the edge of the head end 1211 of the heat exchange fin 121 is relatively sharp, if the user touches the edge, it is easy to cause scratches. Based on this, in this embodiment, the head end 1211 of the heat exchange fin 121 is set not to exceed the outer side surface 104, thereby reducing the possibility of the user being scratched by the heat exchange fin 121 when touching the outer side surface 104, ensuring the user's safety and improving the user's experience.

[0090] Of course, it should be noted that the present application is not limited to this. In other embodiments, the head end 1211 of each heat exchange fin 121 extending from the outside to the inside toward the combustion chamber 10a may extend beyond the outer side surface 104, or the head end 1211 of each heat exchange fin 121 extending from the outside to the inside toward the combustion chamber 10a may extend to the connection between the outer side surface 104 and the bottom of the pot rack body 10.

[0091] Please refer to Figures 5 and 6 In some embodiments, the pot rack 100 further includes a plurality of support legs 60, which are connected to the pot rack body 10 at intervals along the circumference of the pot rack 100 and are arranged at intervals with the heat exchange fins 121. The support legs 60 are used to be placed on the stove to support the pot rack body 10, so as to realize the pot rack body 10 being set on the stove.

[0092] The extension direction of the support leg 60 passes through a heat exchange fin 121 adjacent to the pot rack 100 in the circumferential direction. It can be understood that, compared with the form in which the extension direction of the support leg 60 does not pass through a heat exchange fin 121 adjacent to the pot rack 100 in the circumferential direction, the heat exchange fin 121 in the form of this embodiment is based on the lengthening of the heat exchange fin 121, so that the extension direction of the support leg 60 can pass through, so that by lengthening the length of the heat exchange fin 121, the heat exchange area between the heat exchange fin 121 and the secondary air can be increased, thereby effectively improving the heat exchange efficiency between the secondary air and the heat exchange fin 121.

[0093] In some embodiments, along the height direction of the pot rack 100, the bottom of the support leg 60 is at the same height as the bottom of the heat exchange fin 121. In this way, on the basis of the pot rack body 10 being erected on the stove by the support of the support leg 60, the contact between the heat exchange fin 121 and the stove can also realize the partial support of the pot rack body 10, so that the weight of the pot rack body 10 can be shared by the support leg 60 and the heat exchange fin 121, and the overall stability of the pot rack body 10 is improved, so as to avoid the occurrence of the situation such as the pot 2000 tipping over due to unbalanced force.

[0094] See also Figure 5 Optionally, along the height direction of the pot rack 100, the bottom of the support leg 60 is lower than the bottom of the heat exchange fin 121. It can be understood that if the heat exchange fin 121 is flattened, the strength of the heat exchange fin 121 is relatively general. If the heat exchange fin 121 shares part of the gravity of the pot rack body 10, the heat exchange fin 121 may be subjected to excessive force and deform itself. Based on this, in this embodiment, only the support leg 60 plays a supporting role for the pot rack body 10, thereby avoiding the heat exchange fin 121 playing a supporting role for the pot rack body 10 and causing deformation and other damage.

[0095] In other embodiments, the pot rack 100 of this embodiment may also eliminate the supporting legs 60, and only the cooperation of a plurality of heat exchange fins 121 may be used to realize the pot rack body 10 being mounted on the stove, and this embodiment does not impose any limitation on this.

[0096] See also Figure 6 In some embodiments, the pot rack 100 has concentric circles with the central axis of the pot rack 100 as the center and passing through all the heat exchange fins 121, and the arc lengths of adjacent heat exchange fins 121 on the concentric circles are equal.

[0097] It is understandable that for multiple concentric circles of different diameters, the arc lengths of adjacent heat exchange fins 121 on the same concentric circle are equal, so that when the secondary air flows through the gaps between two different adjacent heat exchange fins 121 at the same time, the size of the space for the secondary air to circulate in the gaps between the two adjacent heat exchange fins 121 can always be kept consistent, thereby improving the consistency of the secondary air's supplement to the flames ejected from the fire holes of the outer ring fire cover and the inner ring fire cover, and improving the uniformity of flame combustion. Of course, it should be noted that the present application is not limited to this, and in other embodiments, the arc lengths of adjacent heat exchange fins 121 on concentric circles may not be equal.

[0098] See also Figure 6In some embodiments, the extension directions of any two adjacent heat exchange fins 121 are arranged at an angle. In this way, the plurality of heat exchange fins 121 of this embodiment can be arranged around the central axis of the pot rack body 10 to be arranged at the bottom of the pot rack body 10, and compared with the form in which the extension directions of any two adjacent heat exchange fins 121 are consistent, a greater number of heat exchange fins 121 can be provided, thereby increasing the total heat exchange contact area between the fin heat exchanger 12 and the secondary air.

[0099] The angles between the extension directions of any two adjacent heat exchange fins 121 are equal. It can be understood that if, in this way, the secondary air can flow through the gaps between two different adjacent heat exchange fins 121 at the same time, the size of the space for the secondary air to flow through the gaps between the two adjacent heat exchange fins 121 can always be kept consistent, thereby improving the consistency of the secondary air's supplement to the flames ejected from the fire holes of the outer ring fire cover and the inner ring fire cover, and improving the uniformity of flame combustion.

[0100] Please continue reading Figure 6 Furthermore, the angle between the extension directions of any two adjacent heat exchange fins 121 is greater than or equal to 5 degrees and less than or equal to 30 degrees. When the angle is greater than or equal to 5 degrees and less than or equal to 30 degrees, it is possible to ensure that the length of the heat exchange fins 121 is longer while avoiding the outlet area formed by the ends 1212 of the adjacent heat exchange fins 121 being too small.

[0101] When the angle is greater than 30 degrees, the length of the heat exchange fin 121 cannot be designed to be too long. If it is designed to be too long, interference will occur between two adjacent heat exchange fins 121, and the secondary air will not be able to flow to the combustion chamber 10a through the gap between the two adjacent heat exchange fins 121. When the angle is less than 5 degrees, the outlet area formed by the ends 1212 of the adjacent heat exchange fins 121 is too small, resulting in the secondary air being unable to accurately flow to the corresponding fire outlet holes.

[0102] In other embodiments, the angle between the extension directions of any two adjacent heat exchange fins 121 may be greater than 1 degree and less than or equal to 40 degrees, which is not limited in this embodiment.

[0103] See also Figure 6 In some embodiments, the distance between two adjacent heat exchange fins 121 gradually decreases along the radial direction pointing to the central axis of the pot rack body 10, that is, the channel formed by the two adjacent heat exchange fins 121 is gradually set in the radial direction pointing to the central axis of the pot rack body 10. In this way, when the secondary air flows through the channel formed by the two adjacent heat exchange fins 121, the turbulence of the secondary air can be increased to increase the contact area between the secondary air and the surface of the heat exchange fins 121, thereby helping to improve the heat exchange efficiency between the secondary air and the surface of the heat exchange fins 121.

[0104] Of course, it should be noted that the present application is not limited thereto. In other embodiments, along the radial direction pointing to the central axis of the pot rack body 10, the distance between two adjacent heat exchange fins 121 gradually increases or remains unchanged.

[0105] See also Figure 5 In some embodiments, the pot rack 100 further includes a support plate 80, which may be circular, oval or square in shape, and may be made of a material having high temperature resistance such as cast iron, which is not limited in this embodiment.

[0106] The support plate 80 is connected to the bottom end of each heat exchange fin 121 away from the pot rack body 10. It can be understood that the heat on the pot rack body 10 can not only be transferred to the heat exchange fin 121, but also be transferred to the support plate 80 through the heat exchange fin 121, so that the secondary air can exchange heat with the heat exchange fin 121 and the support plate 80 during the process of entering the combustion chamber 10a from the bottom of the pot rack body 10, thereby further improving the preheating effect of the secondary air. In addition, the support plate 80 can also play a certain protective role, which can prevent the user from touching the bottom end of the heat exchange fin 121 and causing scratches, thereby protecting the user's safety.

[0107] In addition, when the pot rack 100 of this embodiment is not provided with the supporting legs 60 , the supporting plate 80 can also be directly placed on the stove to play the role of supporting the pot rack body 10 .

[0108] See also Figure 7 Furthermore, when projected along the height direction of the pot rack 100, the projection of each heat exchange fin 121 is within the support plate 80. In this way, in the height direction of the pot rack 100 and in the direction from bottom to top, the support plate 80 can prevent the user from directly touching the bottom end of the heat exchange fin 121, which can further reduce the possibility of scratches caused by the user touching the bottom end of the heat exchange fin 121.

[0109] In other embodiments, when projected along the height direction of the pot rack 100, the projection of each heat exchange fin 121 may be partially inside the support plate 80 and partially outside the support plate 80, for example, the projection of the end 1212 of the heat exchange fin 121 is outside the support plate 80, which is not limited in this embodiment.

[0110] See also Figure 7In some embodiments, the support plate 80 is annular, for example, it can be a circular ring, an elliptical ring, or a square ring. Each heat exchange fin 121 extends from the outside to the inside toward the combustion chamber 10a, and the end 1212 of each heat exchange fin 121 extending from the outside to the inside toward the combustion chamber 10a extends to the inner edge 81 of the support plate 80. In this way, the extension length of the heat exchange fin 121 can be increased to increase the heat exchange area between the secondary air and the heat exchange fin 121, thereby improving the preheating effect of the heat exchange fin 121 on the secondary air.

[0111] Optionally, the end 1212 of each heat exchange fin 121 extending from the outside to the inside toward the combustion chamber 10a may not extend to the inner edge 81 of the support plate 80, and this embodiment does not impose any limitation on this.

[0112] See also Figure 7 In some embodiments, the support plate 80 is annular, for example, it can be a circular ring, an elliptical ring, or a square ring. Each heat exchange fin 121 extends from the outside to the inside toward the combustion chamber 10a, and the head end 1211 of each heat exchange fin 121 extending from the outside to the inside toward the combustion chamber 10a does not extend to the outer edge 82 of the support plate 80. In this way, compared with the form in which the head end 1211 of the heat exchange fin 121 extends to the outer edge 82 of the support plate 80 or exceeds the outer edge 82 of the support plate 80, this embodiment can reduce the possibility of scratches caused by the user touching the head end 1211 of the heat exchange fin 121.

[0113] Optionally, the head end 1211 of each heat exchange fin 121 extending from the outside to the inside toward the combustion chamber 10a may also extend to the outer edge 82 of the support plate 80 or exceed the outer edge 82 of the support plate 80, which is not limited in this embodiment.

[0114] See also Figure 7 In some embodiments, the support plate 80 is annular, for example, it can be a circular ring, an elliptical ring or a square ring. Each heat exchange fin 121 extends from the outside to the inside toward the combustion chamber 10a, and the end 1212 of each heat exchange fin 121 extending from the outside to the inside toward the combustion chamber 10a extends to the inner edge 81 of the support plate 80, and the head end 1211 of each heat exchange fin 121 extending from the outside to the inside toward the combustion chamber 10a does not extend to the outer edge 82 of the support plate 80. In this way, the extension length of the heat exchange fin 121 can be increased to increase the heat exchange area between the secondary air and the heat exchange fin 121, thereby improving the preheating effect of the heat exchange fin 121 on the secondary air, and at the same time, it can reduce the possibility of scratches caused by the user touching the head end 1211 of the heat exchange fin 121.

[0115] Optionally, the end 1212 of each heat exchange fin 121 extending from the outside to the inside toward the combustion chamber 10a may not extend to the inner edge 81 of the support plate 80, and the head end 1211 of each heat exchange fin 121 extending from the outside to the inside toward the combustion chamber 10a may extend to the outer edge 82 of the support plate 80 or exceed the outer edge 82 of the support plate 80, and this embodiment does not impose any restrictions on this.

[0116] See also Figure 5 In some embodiments, the support plate 80 and the plurality of heat exchange fins 121 are an integrated structure. Based on the integrated structure, firstly, the connection strength between the support plate 80 and the heat exchange fins 121 will be better, and the assembly steps of the support plate 80 and the heat exchange fins 121 can be reduced, thereby improving manufacturing efficiency; secondly, the gap at the connection between the support plate 80 and the heat exchange fins 121 can be reduced, so that the support plate 80 and the heat exchange fins 121 have a higher degree of integration, thereby reducing the leakage of the secondary air during the flow process when the secondary air flows through the space enclosed by two adjacent fins, the support plate 80 and the bottom of the pot rack body 10, so as to ensure the supplementary effect of the secondary air on the flame.

[0117] In other embodiments, the support plate 80 and the plurality of heat exchange fins 121 may be separate structures and connected by welding, riveting, or clamping, etc., which is not limited in this embodiment.

[0118] See also Figure 5 In some embodiments, the support plate 80 is provided with a plurality of avoidance openings 80a, and the pot rack 100 further includes a plurality of support legs 60, which are connected to the pot rack body 10 at intervals along the circumference of the pot rack 100 and are arranged at intervals with the heat exchange fins 121, wherein one support leg 60 is correspondingly arranged in one avoidance opening 80a. In this embodiment, with the arrangement of a plurality of support legs 60, the pot rack body 10 can be supported by the support legs 60, and the support plate 80 can cancel the effect of sharing the gravity of the pot rack body 10.

[0119] See also Figure 7 In some embodiments, the heat exchange fin 121 is provided with a spoiler 122, and the spaces on opposite sides of the heat exchange fin 121 are connected at the spoiler 122. In this way, the secondary air in the spaces on opposite sides of the heat exchange fin 121 can collide with each other, thereby making the flow of the secondary air more turbulent, so that the secondary air contacts the heat exchange fin 121 more frequently, thereby increasing the heat exchange between the secondary air and the heat exchange fin 121, and effectively enhancing the heat exchange efficiency of the two.

[0120] Please continue reading Figure 7In some embodiments, the spoiler portion 122 includes a spoiler notch 1225, and the spoiler notch 1225 connects the space on the opposite sides of the heat exchange fin 121. In this way, the secondary air flow in the space on the opposite sides of the heat exchange fin 121 can be disturbed by setting the spoiler notch 1225, and the process of machining the spoiler notch 1225 is relatively simple, which is convenient for manufacturing.

[0121] The spoiler notch 1225 is disposed at the upper edge of the heat exchange fin 121 , so that the secondary air flow in the space on opposite sides of the heat exchange fin 121 and close to the upper edge of the heat exchange fin 121 can be disturbed.

[0122] Alternatively, the spoiler notch 1225 is disposed at the lower edge, so that the secondary air flow in the space located on opposite sides of the heat exchange fin 121 and close to the lower edge of the heat exchange fin 121 can be disturbed.

[0123] Alternatively, the spoiler notches 1225 are disposed at the upper and lower edges of the heat exchange fins 121 , so that the secondary air flow in the spaces on opposite sides of the heat exchange fins 121 and close to the upper and lower edges of the heat exchange fins 121 can be turbulent.

[0124] Please continue reading Figure 7 In some embodiments, the spoiler 122 includes a louver structure 1221, and the louver structure 1221 defines a spoiler airway 1224 connecting the spaces on opposite sides of the heat exchange fin 121. In this way, the secondary air flow in the spaces on opposite sides of the heat exchange fin 121 can be turbulent by setting the louver structure 1221.

[0125] Please continue reading Figure 7 In some embodiments, the spoiler 122 includes a spoiler notch 1225, which is disposed at at least one of the upper edge and the lower edge of the heat exchange fin 121 and communicates with the spaces on opposite sides of the heat exchange fin 121. In this way, the spoiler notch 1225 can be disposed to make the secondary air flow in the spaces on opposite sides of the heat exchange fin 121 turbulent, and the process of machining the spoiler notch 1225 is relatively simple, and is easy to manufacture.

[0126] The spoiler notch 1225 is disposed at the upper edge of the heat exchange fin 121, so that the secondary air flow in the space on the opposite sides of the heat exchange fin 121 and close to the upper edge of the heat exchange fin 121 can be turbulent. Alternatively, the spoiler notch 1225 is disposed at the lower edge, so that the secondary air flow in the space on the opposite sides of the heat exchange fin 121 and close to the lower edge of the heat exchange fin 121 can be turbulent. Alternatively, the spoiler notch 1225 is disposed at the upper and lower edges of the heat exchange fin 121, so that the secondary air flow in the space on the opposite sides of the heat exchange fin 121 and close to the upper and lower edges of the heat exchange fin 121 can be turbulent.

[0127] The spoiler 122 includes a louver structure 1221, which defines a spoiler airway 1224 connecting the spaces on opposite sides of the heat exchange fin 121. Thus, the louver structure 1221 can be arranged to make the secondary air flow in the spaces on opposite sides of the heat exchange fin 121 turbulent.

[0128] Please continue reading Figure 7 In some embodiments, the heat exchange fin 121 extends from the outside to the inside toward the combustion chamber 10a; the spoiler 122 includes at least two louver structures 1221, and the at least two louver structures 1221 include a first louver structure 1222 and a second louver structure 1223. The first louver structure 1221 and the second louver structure 1222 are arranged along the extension direction of the heat exchange fin 121, and are respectively used to guide the secondary air to different sides of the heat exchange fin 121. In this way, the secondary air can be guided to different sides of the heat exchange fin 121, and compared with the form in which the first louver structure 1221 and the second louver structure 1222 are both used to guide the secondary air to the same side of the heat exchange fin 121, the turbulence of the secondary air in the space on the opposite sides of the heat exchange fin 121 can be further enhanced.

[0129] Of course, the present application is not limited thereto. In other embodiments, the first louver structure 1221 and the second louver structure 1222 may also jointly guide the secondary air to the same side of the heat exchange fin 121 .

[0130] Please continue reading Figure 7 In some embodiments, the spoiler 122 includes a louver structure 1221 and at least two spoiler notches 1225, the at least two spoiler notches 1225 are respectively arranged at the upper edge and the lower edge of the heat exchange fin 121, and the louver structure 1221 is arranged between the at least two spoiler notches 1225. In this way, the secondary air flow in the space at the opposite sides of the heat exchange fin 121 and close to the upper edge and the lower edge of the heat exchange fin 121 can be turbulent, and the secondary air flow in the middle part of the upper edge and the lower edge of the heat exchange fin 121 can be turbulent through the louver structure 1221, thereby enhancing the turbulence of most of the secondary air flowing through the heat exchange fin 121.

[0131] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0132] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A pot stand, characterized in that: include: The pot frame body is arranged in a ring shape, and a combustion chamber is arranged on the inner side; and a fin heat exchanger connected to the bottom of the pot rack body and comprising a plurality of heat exchange fins, wherein the plurality of heat exchange fins are arranged at intervals along the circumference of the pot rack so that the secondary air exchanges heat with the heat exchange fins in the process of entering the combustion chamber from the bottom of the pot rack body; Wherein, the extension direction of each of the heat exchange fins is arranged at an angle with the radial direction of the pot rack body.

2. The pot support according to claim 1, characterized in that: Each of the heat exchange fins extends from the outside to the inside toward the combustion chamber. The heat exchange fins are arranged to be inclined relative to the radial direction passing through the heat exchange fins, and the inclination directions of different heat exchange fins are consistent.

3. The pot support according to claim 2, characterized in that: The included angle between the extension direction of the heat exchange fin and the radial direction passing through the head end thereof is α, and α is greater than or equal to 20 degrees and less than or equal to 60 degrees.

4. The pot support according to claim 1, characterized in that: For any two adjacent heat exchange fins, their projections on the inner contour line of the pot support body overlap.

5. The pot support according to claim 1, characterized in that: The projection of the heat exchange fin inward onto the inner contour line of the pot rack body has a first arc length, and a ratio of the first arc length to the total length of the inner contour line is greater than or equal to 0.03 and less than or equal to 0.

05.

6. The pot support according to claim 1, characterized in that: The pot support body has an inner side surface arranged toward the combustion chamber, and the end of each heat exchange fin extending from the outside to the inside toward the combustion chamber exceeds the inner side surface to partially extend into the combustion chamber.

7. The pot support according to claim 1, characterized in that: The pot support body also has an outer side surface facing away from the combustion chamber, and the head end of each heat exchange fin extending from the outside to the inside toward the combustion chamber does not exceed the outer side surface.

8. The pot support according to claim 1, characterized in that: Also includes: A plurality of supporting legs are connected to the pot frame body at intervals along the circumference of the pot frame and are arranged at intervals from the heat exchange fins; Wherein, the extension direction of the supporting leg passes through a heat exchange fin adjacent to the pot rack in the circumferential direction thereof.

9. The pot support according to claim 8, characterized in that: Along the height direction of the pot support, the bottom of the supporting leg is at the same height as the bottom of the heat exchange fin, or the bottom of the supporting leg is lower than the bottom of the heat exchange fin.

10. The pot support according to claim 1, characterized in that: The pot rack has concentric circles with the central axis of the pot rack as the center and passing through all the heat exchange fins, and the arc lengths of adjacent heat exchange fins on the concentric circles are equal.

11. The pot support according to claim 1, characterized in that: The extension directions of any two adjacent heat exchange fins are arranged at an angle, and the angle between the extension directions of any two adjacent heat exchange fins is equal.

12. The pot support according to claim 11, characterized in that: The angle between the extension directions of any two adjacent heat exchange fins is greater than or equal to 5 degrees and less than or equal to 30 degrees.

13. The pot support according to claim 1, characterized in that: Along the radial direction pointing to the central axis of the pot support body, the distance between two adjacent heat exchange fins gradually decreases.

14. The pot support according to claim 1, characterized in that: Also includes: A support plate is connected to the bottom end of each of the heat exchange fins away from the pot rack body.

15. The pot support according to claim 14, characterized in that: Projecting along the height direction of the pot rack, the projection of each of the heat exchange fins is within the support plate.

16. The pot support according to claim 15, characterized in that: The support plate is annular, and each of the heat exchange fins extends from the outside to the inside toward the combustion chamber, and the end of each of the heat exchange fins extending from the outside to the inside toward the combustion chamber extends to the inner edge of the support plate; and / or, the head end of each of the heat exchange fins extending from the outside to the inside toward the combustion chamber does not extend to the outer edge of the support plate.

17. The pot support according to claim 14, characterized in that: The support plate and the plurality of heat exchange fins are an integrated structure.

18. The pot support according to claim 14, characterized in that: The support plate is provided with a plurality of avoidance openings; The pot rack further comprises a plurality of supporting legs, which are connected to the pot rack body at intervals along the circumference of the pot rack and are arranged at intervals from the heat exchange fins; Among them, one of the supporting legs is correspondingly inserted into one of the avoidance openings.

19. The pot support according to any one of claims 1 to 18, characterized in that: The heat exchange fin is provided with a spoiler, and at the spoiler, spaces on opposite sides of the heat exchange fin are connected.

20. The pot support according to claim 19, characterized in that: The spoiler portion includes a spoiler notch, and the spoiler notch is arranged at least at one of the upper edge and the lower edge of the heat exchange fin and communicates with the space on two opposite sides of the heat exchange fin; and / or, The spoiler portion includes a louver structure, and the louver structure defines a spoiler airway communicating with spaces on two opposite sides of the heat exchange fin.

21. The pot support according to claim 20, characterized in that: The heat exchange fins extend from the outside to the inside toward the combustion chamber; the spoiler comprises: The at least two louver structures include a first louver structure and a second louver structure, wherein the first louver structure and the second louver structure are arranged along the extension direction of the heat exchange fins and are respectively used to guide the secondary air to different sides of the heat exchange fins.

22. The pot support according to claim 20, characterized in that: The spoiler portion includes the louver structure and at least two spoiler notches, the at least two spoiler notches are respectively arranged at the upper edge and the lower edge of the heat exchange fin, and the louver structure is arranged between the at least two spoiler notches.

23. The pot support according to any one of claims 1 to 18, characterized in that: The shape of each of the heat exchange fins is configured to be straight, arc, wavy or broken line; and / or the height of each of the heat exchange fins is greater than or equal to 5 mm and less than or equal to 25 mm.

24. A cooking appliance, characterized in that: include: Burner; and The pot support according to any one of claims 1 to 23, wherein the pot support body surrounds the outside of the burner.

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