Pot rack and stove

Abstract

The pot rack comprises a pot rack body and a protruding heat exchanger, the pot rack body is annularly arranged, a combustion cavity is defined by the inner side of the pot rack body, and the protruding heat exchanger is arranged at the bottom of the pot rack body and comprises a plurality of protrusions arranged at intervals; and secondary air enters the combustion cavity after exchanging heat with the multiple protrusions. According to the technical scheme, the combustion efficiency of the combustor of the stove can be 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] The protrusion heat exchanger is arranged at the bottom of the pot support body and comprises a plurality of protrusions arranged at intervals, so that the secondary air enters the combustion chamber after heat exchange with the plurality of protrusions.

[0007] In some embodiments, the pot rack body and the plurality of protrusions are integrally formed components, and the plurality of protrusions are formed on the bottom of the pot rack body by stamping or stretching.

[0008] In some embodiments, the pot rack body and the plurality of protrusions are separately provided, and the connection method between the two includes at least one of welding, riveting, screwing, clamping and interference fit.

[0009] In some embodiments, the raised heat exchanger further comprises:

[0010] A base plate is arranged in a ring shape and connected to the bottom of the pot rack body;

[0011] Wherein, the plurality of protrusions are all connected to the substrate, so that the secondary air enters the combustion chamber after heat exchange with the substrate and the plurality of protrusions.

[0012] In some embodiments, the substrate and the plurality of protrusions are integrally formed components, and the substrate is formed into the plurality of protrusions by stamping or stretching.

[0013] In some embodiments, a plurality of the protrusions are arranged at intervals along the circumference and / or radial direction of the pot support body.

[0014] In some embodiments, a plurality of the protrusions are arranged at intervals along the circumference of the pot support body to form one or more circles of protrusions arranged along the circumference of the pot support body;

[0015] Wherein, the plurality of circles of protrusions are arranged at intervals in the radial direction of the pot support body.

[0016] In some embodiments, along the radial direction pointing to the central axis of the pot support body, of two adjacent circles of the protrusions, the protrusions located on the outer side have a larger projection area on the bottom of the pot support body along the height direction of the pot support body than the protrusions located on the inner side.

[0017] In some embodiments, in the same circle of protrusions, a first air outlet is defined between two adjacent protrusions, and along the radial direction of the pot rack body, the first air outlet is blocked by the protrusions of the adjacent circle.

[0018] In some embodiments, a plurality of the protrusions are arranged at intervals along the radial direction of the pot support body to form a plurality of rows of protrusions arranged along the radial direction of the pot support body;

[0019] Wherein, a plurality of rows of protrusions are arranged at intervals in the circumferential direction of the pot rack body.

[0020] In some embodiments, along the radial direction pointing to the central axis of the pot support body, in the same row of protrusions, the protrusions located on the outer side have a larger projection area on the bottom of the pot support body along the height direction of the pot support body than the protrusions located on the inner side.

[0021] In some embodiments, in the same row of protrusions, a second air outlet is defined between two adjacent protrusions, and along the circumference of the pot rack body, the second air outlet is blocked by the protrusions in the adjacent row.

[0022] In some embodiments, the plurality of protrusions are distributed at equal intervals along the circumference and / or radial direction of the pot support body.

[0023] In some embodiments, the protrusion includes at least one of a convex hull, a convex point, a convex strip and a convex column.

[0024] In some embodiments, each of the protrusions is protruding along the height direction of the pot support body or along a direction forming an angle with the height direction of the pot support body.

[0025] In some of the embodiments, the height of each protrusion is greater than or equal to 2 mm and less than or equal to 15 mm.

[0026] In some embodiments, the pot support body is a multi-layer structure and comprises at least:

[0027] Top plate; and

[0028] The bottom plate is spliced ​​with the top plate along the height direction of the pot rack body to cooperate to enclose a heat insulation cavity, and a plurality of protrusions are arranged at the bottom of the bottom plate or are integrally formed with the bottom plate.

[0029] In a second aspect, an embodiment of the present application provides a stove, which includes:

[0030] Burners; and

[0031] As for the pot support as described above, the pot support body surrounds the outer side of the burner.

[0032] The pot rack and stove based on the embodiments of the present application perform heat exchange with the secondary air through multiple protrusions to preheat the secondary air. In this way, not only can the heat radiated to the pot rack body by the flame 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 protrusion heat exchanger, effectively improving the high-temperature ablation phenomenon of the pot rack body. At the same time, the supplement 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 the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] 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.

[0034] Figure 1 A schematic diagram of the connection structure between an external cooker and an embodiment of the cooker of the present application;

[0035] Figure 2 for Figure 1 The structural schematic diagram of a stove embodiment shown;

[0036] Figure 3 for Figure 2 The structural schematic diagram of an embodiment of a pot rack shown;

[0037] Figure 4 for Figure 3 A schematic structural diagram of the pot rack from another perspective shown;

[0038] Figure 5 for Figure 4 A schematic cross-sectional view of a pot stand shown;

[0039] Figure 6 for Figure 2 A cross-sectional schematic diagram of another embodiment of a pot stand is shown;

[0040] Figure 7 for Figure 2 A cross-sectional schematic diagram of another embodiment of a pot rack is shown;

[0041] Figure 8 for Figure 2 A cross-sectional schematic diagram of another embodiment of a pot stand is shown;

[0042] Fig. 9 This is a schematic diagram of the connection structure of a substrate and a protrusion according to an embodiment of the present application;

[0043] Fig.10 for Figure 2 A bottom view of an embodiment of a pot stand is shown;

[0044] Fig.11 for Figure 2 A bottom view of another embodiment of a pot rack is shown.

[0045] Description of Figure Numbers:

[0046] 1000, stove; 100, pot rack; 10, pot rack body; 10a, combustion chamber; 10d, heat insulation chamber; 101, top; 102, bottom of pot rack body; 103, inner side; 104, outer side; 105, top plate; 106, bottom plate; 16, raised heat exchanger; 161, raised; 161a, first air outlet; 161b, second air outlet; 162, base plate; 163, raised point; 164, raised bump; 165, raised strip; 166, raised column; 50, pot support; 60, supporting leg; 200, burner; 2000, pot.

[0047] 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

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] In order to improve the combustion efficiency of the burner 200 by means of the pot support 100, please refer to Figure 3 to Figure 4 Specifically, the pot support 100 may include a pot support body 10 and a protruding heat exchanger 16 .

[0054] 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 such as high temperature resistance and good strength. The pot support body 10 surrounds the outer side of the burner 200, and the inner side encloses the above-mentioned combustion chamber 10a. Specifically, the pot support body 10 has an inner side surface 103 facing the combustion chamber 10a and an outer side surface 104 away from the combustion chamber 10a, wherein the inner side surface 103 encloses the combustion chamber 10a.

[0055] The raised heat exchanger 16 is arranged at the bottom 102 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 raised heat exchanger 16 in a heat exchange manner, thereby increasing the temperature of the raised heat exchanger 16.

[0056] It can be understood that the secondary air can enter the combustion chamber 10a through the bottom 102 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 102 of the pot rack body 10, the secondary air can exchange heat with the raised heat exchanger 16 to increase its own temperature. In this way, the secondary air can be preheated through the raised heat exchanger 16 before it supplements the flame of the burner 200.

[0057] Among them, the specific arrangement forms of the raised heat exchanger 16 arranged at the bottom 102 of the pot rack body 10 can include at least the following two: first, the raised heat exchanger 16 is directly connected to the bottom 102 of the pot rack body 10 to realize that the raised heat exchanger 16 is arranged at the bottom 102 of the pot rack body 10; second, the raised heat exchanger 16 is indirectly connected to the pot rack body 10 through an additionally arranged connecting member, and the raised heat exchanger 16 is arranged at the bottom 102 of the pot rack body 10, which is not limited in this embodiment.

[0058] The protrusion heat exchanger 16 includes a plurality of protrusions 161 , and the plurality of protrusions 161 are arranged at intervals, so that the secondary air enters the combustion chamber 10 a after heat exchange with the plurality of protrusions 161 .

[0059] Please refer to Figures 5 to 8 The protrusion 161 may include a variety of structural forms. As shown in the figure, the protrusion 161 may include at least one of a convex bulge 164, a convex point 163, a convex strip 165 and a convex column 166. Specifically, the protrusion 161 may be any one of the convex bulge 164, the convex point 163, the convex strip 165 or the convex column 166. The protrusion 161 may also be a combination of any two or more of the convex bulge 164, the convex point 163, the convex strip 165 and the convex column 166. This embodiment does not limit this.

[0060] like Figure 5The specific form of the protrusion 161 is a convex hump 164. It can be understood that the convex hump 164 is a spherical structure of the protrusion 161, and the convex hump 164 has a larger projection area on the bottom 102 of the pot rack body 10 along the height direction of the pot rack body 10 than the convex point 163. In this way, the heat exchange area between a single convex hump 164 and the secondary air will be larger, thereby improving the heat exchange efficiency. Moreover, the outer surface of the convex hump 164 is an arc surface, so that the outer surface of the convex hump 164 is relatively smooth without sharp points, thereby preventing scratches caused by users accidentally touching the convex hump 164.

[0061] like Figure 6 , the specific form of the protrusion 161 is a convex point 163. It can be understood that the convex point 163 is also a spherical structure of the protrusion 161, but the projection area of ​​the convex point 163 on the bottom 102 of the pot rack body 10 along the height direction of the pot rack body 10 is smaller than that of the convex hull 164. Therefore, on the basis of the consistent area of ​​the bottom 102 of the pot rack body 10, more convex points 163 can be arranged, so that multiple convex points 163 can be arranged in a dense form to improve the heat exchange effect with the secondary air. In the actual shape, it can be understood that the convex point 163 can be a sharp point at the end along its protruding direction, while the convex hull 164 is arc-shaped at the end along its protruding direction.

[0062] like Figure 7 The specific form of the protrusion 161 is the convex strip 165. It can be understood that the convex strip 165 is a long strip structure of the protrusion 161. Through the long strip setting, the length of the convex strip 165 is longer, so that the heat exchange area with the secondary air is also larger, which can improve the heat exchange effect between the secondary air and the convex strip 165.

[0063] like Figure 8 The specific form of the protrusion 161 is a protrusion 166. It can be understood that the protrusion 166 is a columnar structure of the protrusion 161, such as a cylindrical or prismatic columnar structure. On the basis of the columnar structure, when the secondary air flows through the outer surface of the protrusion 166, it can also have a larger heat exchange area, thereby improving the heat exchange effect between the secondary air and the protrusion 165.

[0064] In summary, in this embodiment, the protruding heat exchanger 16 is provided on the bottom 102 of the pot rack body 10, and the protruding heat exchanger 16 includes a plurality of protrusions 161, so that the pot rack 100 of this embodiment has at least the following technical effects:

[0065] The plurality of protrusions 161 are used to perform heat exchange with the secondary air 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 protrusion heat exchanger 16, 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, thereby reducing the emission of smoke to ensure the safety of the user.

[0066] Please refer to Figure 3 to Figure 4 In some embodiments, the pot rack 100 further includes a pot support leg 50, which is connected to the top 101 of the pot rack body 10 and is used to support the bottom of the pot 2000. The pot support leg 50 may be in a long strip shape to increase the connection area between the pot support leg 50 and the bottom of the pot 2000, so as to improve the stability of the pot 2000 supported by the pot support leg 50, and the pot support leg 50 may be made of a material with high temperature resistance such as cast iron, which is not limited in this embodiment.

[0067] Please refer to Figure 3 to Figure 4 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. The support legs 60 are used to be placed on the stove to support the pot rack body 10, so that the pot rack body 10 can be set on the stove, so that the stability of the pot rack body 10 can be improved by setting a plurality of support legs 60.

[0068] Please refer to Figures 5 to 8 In some embodiments, the pot support body 10 is a multi-layer structure and includes at least a top plate 105 and a bottom plate 106. The bottom plate 106 is spliced ​​with the top plate 105 along the pot support body 10 to cooperate to enclose a heat insulation cavity 10d. In this way, the heat insulation cavity 10d can improve the condition that the heat in the combustion cavity 10a is dissipated from the pot support body 10 to the outside, so as to further improve the overall combustion efficiency of the burner 200.

[0069] Of course, the present application is not limited to this. In other embodiments, the pot rack body 10 may include, in addition to the top plate 105 and the bottom plate 106, a middle plate arranged between the top plate 105 and the bottom plate 106, the top plate 105 and the bottom plate 106 respectively enclose a sub-cavity with the middle plate, the insulation cavity 10d includes two sub-cavities, or the pot rack body 10 is a single-layer structure, which is not limited in this embodiment.

[0070] Multiple protrusions 161 can be all arranged at the bottom of the base plate 106, that is, multiple protrusions 161 are directly connected to the bottom of the base plate 106, or multiple protrusions 161 are indirectly connected to the base plate 106 through additionally arranged connecting components, so that multiple protrusions 161 are located at the bottom of the base plate 106.

[0071] Optionally, the plurality of protrusions 161 may also be integrally formed with the bottom plate 106 , that is, the protrusions 161 are formed on the bottom of the bottom plate 106 by stamping or stretching, which is not limited in this embodiment.

[0072] For the sake of convenience, the following content further introduces the aspect that the pot rack body 10 of the pot rack 100 of the present application can achieve a good preheating effect on the secondary air in the form of the pot rack body 10 being a single-layer structure.

[0073] In some embodiments, the height of each protrusion 161 is greater than or equal to 2 mm and less than or equal to 15 mm. Based on this, not only can the preheating effect of the plurality of protrusions 161 on the secondary air be improved, but also the heating effect of the flame of the burner 200 on the cookware 2000 can be ensured.

[0074] When the height of each protrusion 161 is less than 2 mm, the height of the protrusion 161 is short, resulting in a small heat exchange area between the protrusion 161 and the secondary air, affecting the preheating effect of the protrusion 161 on the secondary air. When the height of each protrusion 161 is greater than 15 mm, the height of the protrusion heat exchanger 16 is too high, resulting in a high overall height of the pot rack 100, so that the distance between the pot 2000 supported by the pot rack 100 and the burner 200 is too large, affecting the heating effect of the flame on the pot 2000.

[0075] For example, the height of each protrusion 161 can be 2 mm, 5 mm, 8 mm, 10 mm, 12 mm or 15 mm, which is not limited in this embodiment. Of course, the present application is not limited thereto. In other embodiments, the height of each protrusion 161 can also be greater than or equal to 1 mm and less than or equal to 30 mm.

[0076] See also Figure 8 In some embodiments, each protrusion 161 is protruded along the height direction of the pot rack body 10. In this way, compared with different protrusions 161 having different protrusion directions, this embodiment can ensure that the interference direction of multiple protrusions 161 for secondary air is consistent, so that the annular flame supplement effect is more consistent.

[0077] Optionally, each protrusion 161 is protruded in a direction that is angled with the height direction of the pot rack body 10. For example, it may be inclined in the height direction of the pot rack body 10 and in the direction toward the central axis of the pot rack body 10, so that when the secondary air flows through the protrusion 161, it can be guided into the combustion chamber 10a by the protrusion 161, reducing the loss of the secondary air, so that the secondary air can supplement the flame generated by the burner 200 in a state of sufficient content.

[0078] Next, the present application will introduce the specific matching forms of the pot rack body 10 and the plurality of protrusions 161. Specifically, the matching forms may include but are not limited to the following embodiments:

[0079] In some embodiments, the pot rack body 10 and the plurality of protrusions 161 are integrally formed components, so that the connection between the pot rack body 10 and the plurality of protrusions 161 can be more secure and the number of assembly steps is reduced.

[0080] On the basis that the pot rack body 10 and the plurality of protrusions 161 are integrally formed components, further, the bottom 102 of the pot rack body 10 is formed with the plurality of protrusions 161 by stamping. In the actual forming process, the cooperation of the press machine and the die can be used to apply a deformation force to the bottom 102 of the pot rack body 10, so as to form the plurality of protrusions 161 on the bottom 102 of the pot rack body 10. In this way, the size and shape accuracy of the protrusions 161 can be ensured, and the protrusions 161 can be directly formed, thereby improving production efficiency.

[0081] Optionally, the bottom 102 of the pot rack body 10 is stretched to form a plurality of protrusions 161. In the actual forming process, the pot rack body 10 is placed on a stretching machine, and a stretching force is applied to the pot rack body 10 to deform the bottom 102 of the pot rack body 10 to form a plurality of protrusions 161. In this way, the protrusions 161 can also be directly formed, and this embodiment does not limit this.

[0082] In other embodiments, the pot rack body 10 and the plurality of protrusions 161 are separately provided. It is understandable that the pot rack body 10 and the plurality of protrusions 161 may be separately manufactured, and then the pot rack body 10 and the plurality of protrusions 161 are fixedly connected. Specifically, the connection method between the two may include at least one of welding, riveting, screwing, clamping and interference fit.

[0083] When connecting the two, for example, any one of the above connection methods can be used, such as welding or riveting, so that the connection between the pot rack body 10 and the plurality of protrusions 161 is more firmly established; for another example, a combination of multiple connection methods can be used, such as through the cooperation of snap connection and threaded connection, or through the cooperation of interference fit and snap connection, to further improve the stability of the connection between the plurality of protrusions 161 and the pot rack body 10.

[0084] Exemplarily, when the connection method between the pot rack body 10 and the multiple protrusions 161 is screwed, the pot rack 100 also includes a locking piece, wherein the protrusion 161 is provided with a connecting portion, and the connecting portion is provided with a first threaded hole, the pot rack body 10 is provided with a second threaded hole, and the locking piece is sequentially passed through the first threaded hole and the second threaded hole to achieve the screw connection between the pot rack body 10 and the protrusion 161; another exemplary embodiment, when the connection method between the pot rack body 10 and the multiple protrusions 161 is snap-on, the protrusion 161 is provided with a connecting portion, and the connecting portion is provided with a snap buckle, and accordingly, the pot rack body 10 is provided with a snap groove that is snap-fitted with the snap buckle.

[0085] See also Fig. 9 In some other embodiments, the protruding heat exchanger 16 further includes a substrate 162. The substrate 162 may be arranged in an annular shape, for example, in a circular ring shape, an elliptical ring shape, or a square ring shape, and the material of the substrate 162 may be a metal material with good thermal conductivity, such as copper and aluminum, which is not limited in this embodiment.

[0086] The substrate 162 is connected to the pot rack body 10. Specifically, the connection method between the substrate 162 and the pot rack body 10 may include welding, riveting or clamping, etc., which is not limited in this embodiment. It can be understood that the heat on the pot rack body 10 will exchange heat with the substrate 162 in a heat exchange manner, while increasing the temperature of the substrate 162, while reducing its own temperature, improving the high-temperature ablation phenomenon. On the basis that the material of the substrate 162 is a metal material with good thermal conductivity, the heat on the pot rack body 10 can also be better transferred to the substrate 162.

[0087] The plurality of protrusions 161 are all connected to the base plate 162, so that the secondary air enters the combustion chamber 10a after heat exchange with the base plate 162 and the plurality of protrusions 161. In this way, the secondary air can not only exchange heat with the plurality of protrusions 161, but also with the base plate 162, so as to increase the overall heat exchange area between the protrusion heat exchanger 16 and the secondary air, and enhance the preheating effect of the protrusion heat exchanger 16 on the secondary air.

[0088] Please continue reading Fig. 9 Furthermore, the base plate 162 and the plurality of protrusions 161 are integrally formed components. In this way, the connection between the base plate 162 and the plurality of protrusions 161 can be made more secure, and the assembly process is reduced. It is understandable that in the actual assembly process, the base plate 162 and the plurality of protrusions 161 can be formed first, and then the base plate 162 connected with the plurality of protrusions 161 can be connected to the bottom 102 of the pot rack body 10.

[0089] On the basis that the substrate 162 and the plurality of protrusions 161 are integrally formed components, the substrate 162 is further formed by stamping to form the plurality of protrusions 161. In the actual forming process, the cooperation of a press machine and a die can be used to apply a deformation force to the substrate 162, so that the plurality of protrusions 161 can be formed on the substrate 162 at one time, so that the size and shape accuracy of the protrusions 161 can be ensured, and the protrusions 161 can be directly formed, thereby improving production efficiency.

[0090] Optionally, the substrate 162 is stretched to form a plurality of protrusions 161. In the actual forming process, the substrate 162 is placed on a stretching machine, and a stretching force is applied to the substrate 162 to deform the substrate 162 to form a plurality of protrusions 161. In this way, the protrusions 161 can be directly formed, and this embodiment does not limit this.

[0091] In the following content, the present application will further introduce in detail the specific arrangement of the multiple protrusions 161 , so as to further enhance the preheating effect of the protrusion heat exchanger 16 on the secondary air through the arrangement of the multiple protrusions 161 .

[0092] See also Fig.10 In some embodiments, a plurality of protrusions 161 are arranged at intervals along the circumference of the pot support body 10. In this way, the secondary air in different areas on the circumference of the pot support body 10 can exchange heat with the protrusions 161 as much as possible, thereby increasing the total heat exchange area between the secondary air and the protrusion heat exchanger 16, so as to further enhance the preheating effect of the protrusions 161 on the secondary air, and the temperature of the secondary air in different areas on the circumference of the pot support body 10 after being preheated by different protrusions 161 can be close to the same, so as to ensure the overall uniformity of the final flame re-combustion.

[0093] Please continue reading Fig.10 Furthermore, along the circumference of the pot rack body 10, the plurality of protrusions 161 are evenly distributed. In this way, the secondary air in different areas on the circumference of the pot rack body 10 can be evenly heat-exchanged with the protrusions 161, and the secondary air in some areas is prevented from not being preheated by the protrusions 161 due to the large distance between the two protrusions 161. Of course, in other embodiments, along the circumference of the pot rack body 10, the plurality of protrusions 161 can also be unevenly distributed, and this embodiment does not limit this.

[0094] See also Fig.11 In other embodiments, a plurality of protrusions 161 are arranged at intervals along the radial direction of the pot rack body 10. In this way, when the secondary air flows along the radial direction pointing to the central axis of the pot rack body 10, the secondary air can exchange heat with different protrusions 161 as much as possible, thereby increasing the total heat exchange area between the secondary air and the protrusion heat exchanger 16, so as to further enhance the preheating effect of the protrusions 161 on the secondary air.

[0095] Please continue reading Fig.11 , further, along the radial direction of the pot rack body 10, the plurality of protrusions 161 are distributed at equal distances. In this way, the plurality of protrusions 161 can be arranged more regularly along the radial direction of the pot rack body 10, so that the speed of the secondary air when flowing through each protrusion 161 is relatively uniform, thereby achieving more uniform heat exchange and effectively improving the preheating effect of the plurality of protrusions 161 on the secondary air. Of course, in other embodiments, along the radial direction of the pot rack body 10, the plurality of protrusions 161 can also be distributed at unequal distances, and this embodiment does not limit this.

[0096] The secondary air in different circumferential regions of the pot rack body 10 evenly exchanges heat with the protrusions 161 , thereby preventing the secondary air in some regions from not being preheated by the protrusions 161 due to the large distance between the two protrusions 161 .

[0097] See also Fig.11 In some other embodiments, a plurality of the protrusions 161 are arranged at intervals along the circumferential and radial directions of the pot rack body 10. In this way, the secondary air in different areas in the circumferential direction of the pot rack body 10 can exchange heat with the protrusions 161 as much as possible, and when the secondary air flows along the radial direction pointing to the central axis of the pot rack body 10, the secondary air can exchange heat with different protrusions 161 as much as possible. In general, the total heat exchange area between the secondary air and the protrusion heat exchanger 16 can be increased, so as to further enhance the preheating effect of the protrusions 161 on the secondary air.

[0098] Please continue reading Fig.11 Furthermore, along the circumference and radial direction of the pot rack body 10, the plurality of protrusions 161 are distributed at equal distances. In this way, the secondary air in different areas in the circumference of the pot rack body 10 can be evenly heat-exchanged with the protrusions 161, avoiding the situation where the secondary air in some areas is not preheated by the protrusions 161 due to the large spacing between the two protrusions 161, and the plurality of protrusions 161 can be arranged more regularly in the radial direction of the pot rack body 10, so that the speed of the secondary air when flowing through each protrusion 161 is relatively uniform, thereby achieving more uniform heat exchange and effectively improving the preheating effect of the plurality of protrusions 161 on the secondary air. Of course, in other embodiments, along the circumference of the pot rack body 10, the plurality of protrusions 161 can also be distributed at unequal distances, and along the radial direction of the pot rack body 10, the plurality of protrusions 161 can also be distributed at unequal distances, and this embodiment does not limit this.

[0099] See also Fig.10On the basis of the multiple protrusions 161 being arranged at intervals along the circumference of the pot rack body 10, one or more circles of protrusions 161 arranged along the circumference of the pot rack body 10 can be formed. Moreover, based on the structural form of forming multiple circles of protrusions 161, the multiple circles of protrusions 161 can be arranged at intervals in the radial direction of the pot rack body 10. In this way, when the secondary air flows along the radial direction pointing to the central axis of the pot rack body 10, the secondary air can exchange heat with protrusions 161 of different circles as much as possible, thereby increasing the total heat exchange area between the secondary air and the protrusion heat exchanger 16, so as to further enhance the preheating effect of the protrusions 161 on the secondary air.

[0100] See also Fig.10 In some embodiments, along the radial direction pointing to the central axis of the pot rack body 10 , of the two adjacent circles of protrusions 161 , the protrusions 161 located on the outer side have a larger projection area on the bottom 102 of the pot rack body 10 along the height direction of the pot rack body 10 than the protrusions 161 located on the inner side.

[0101] It can be understood that the flow path of the secondary air is to first flow through the outer protrusion 161 and then flow through the inner protrusion 161. When the secondary air flows through the protrusion 161, the interference of the protrusion 161 will make the turbulence of the secondary air greater, thereby making the contact between the secondary air and the protrusion 161 more frequent, thereby increasing the heat exchange between the secondary air and the protrusion 161.

[0102] In this embodiment, the protrusion 161 located on the outside can be used to first increase the turbulence of the secondary air, so that the secondary air flows to the subsequent area of ​​the bottom 102 of the pot rack body 10 in a form with greater turbulence, thereby increasing the total heat exchange efficiency between the secondary air and the protrusion heat exchanger 16, thereby greatly increasing the preheating effect of the protrusion heat exchanger 16 on the secondary air.

[0103] Of course, the present application is not limited to this. In other embodiments, along the radial direction pointing to the central axis of the pot support body 10, in two adjacent circles of protrusions 161, the projection areas of the protrusions 161 located on the outer side and the protrusions 161 located on the inner side along the height direction of the pot support body 10 on the bottom 102 of the pot support body 10 are equal, or the projection area of ​​the protrusions 161 located on the outer side along the height direction of the pot support body 10 on the bottom 102 of the pot support body 10 is smaller than that of the protrusions 161 located on the inner side.

[0104] Please continue reading Fig.10 In some embodiments, in the same circle of protrusions 161 , a first air outlet 161 a is defined between two adjacent protrusions 161 , and along the radial direction of the pot rack body 10 , the first air outlet 161 a is blocked by the protrusions 161 of the adjacent circle.

[0105] It is understandable that part of the secondary air will flow through the first air outlet 161a, but this part of the secondary air will not exchange heat with the protrusion 161 and will not have a preheating effect. Therefore, based on this technical problem, this embodiment sets the first air outlet 161a to be blocked by the protrusion 161 of the adjacent circle, so that even if the secondary air flows through the first air outlet 161a, it will exchange heat with the protrusion 161 of the adjacent circle, ensuring the preheating effect of the protrusion heat exchanger 16 on the secondary air, so as to solve this technical problem, and when the spacing between multiple protrusions 161 is small enough, when the secondary air flows through the protrusion 161 of the adjacent circle, it can also reflux under the interference of the protrusion 161 and exchange heat with the protrusion 161 located in the front stream, so as to further improve the preheating effect.

[0106] See also Fig.11 On the basis of the multiple protrusions 161 being arranged at intervals along the radial direction of the pot support body 10, multiple rows of protrusions 161 arranged along the radial direction of the pot support body 10 can be formed, and the multiple rows of protrusions 161 are arranged at intervals in the circumferential direction of the pot support body 10. In this way, the secondary air located in different areas in the circumferential direction of the pot support body 10 can exchange heat with the corresponding rows of protrusions 161 as much as possible, thereby increasing the total heat exchange area of ​​the secondary air and the protrusion heat exchanger 16, so as to further enhance the preheating effect of the protrusions 161 on the secondary air, and the temperature of the secondary air located in different areas in the circumferential direction of the pot support body 10 after being preheated by the protrusions 161 can be close to the same, so as to ensure the overall uniformity of the final flame re-combustion.

[0107] Please continue reading Fig.11 In some embodiments, along the radial direction pointing to the central axis of the pot rack body 10 , in the same row of protrusions 161 , the protrusions 161 located on the outer side have a larger projection area on the bottom 102 of the pot rack body 10 along the height direction of the pot rack body 10 than the protrusions 161 located on the inner side.

[0108] It can be understood that the flow path of the secondary air is to first flow through the outer protrusion 161 and then flow through the inner protrusion 161. When the secondary air flows through the protrusion 161, the interference of the protrusion 161 will make the turbulence of the secondary air greater, thereby making the contact between the secondary air and the protrusion 161 more frequent, thereby increasing the heat exchange between the secondary air and the protrusion 161.

[0109] In this embodiment, the protrusion 161 located on the outside can be used to first increase the turbulence of the secondary air, so that the secondary air flows to the subsequent area of ​​the bottom 102 of the pot rack body 10 in a form with greater turbulence, thereby increasing the total heat exchange efficiency between the secondary air and the protrusion heat exchanger 16, thereby greatly increasing the preheating effect of the protrusion heat exchanger 16 on the secondary air.

[0110] Of course, the present application is not limited to this. In other embodiments, the projection area of ​​the projections 161 located on the outside and the projections 161 located on the inside of the same row of projections 161 along the radial direction pointing to the central axis of the pot rack body 10 along the height direction of the pot rack body 10 on the bottom 102 of the pot rack body 10 is equal, or the projection area of ​​the projections 161 located on the outside is smaller than that of the projections 161 located on the inside on the bottom 102 of the pot rack body 10 along the height direction of the pot rack body 10.

[0111] Please continue reading Fig.11 In some embodiments, in the same column of protrusions 161 , a second air outlet 161 b is defined between two adjacent protrusions 161 , and along the circumference of the pot rack body 10 , the second air outlet 161 b is blocked by the protrusions 161 in the adjacent column.

[0112] It is understandable that part of the secondary air will flow through the second air outlet 161b, but this part of the secondary air will not exchange heat with the protrusion 161 and will not have a preheating effect. Therefore, based on this technical problem, the second air outlet 161b is set in this embodiment to be blocked by the protrusions 161 of the adjacent row, so that even if the secondary air flows through the second air outlet 161b, it will exchange heat with the protrusions 161 of the adjacent row, ensuring the preheating effect of the protrusion heat exchanger 16 on the secondary air, so as to solve this technical problem, and when the spacing between the multiple protrusions 161 is small enough, when the secondary air flows through the protrusions 161 of the adjacent row, it can also flow back under the interference of the protrusion 161 and exchange heat with the protrusion 161 located in the front row, so as to further improve the preheating effect.

[0113] 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.

[0114] 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 The protrusion heat exchanger is arranged at the bottom of the pot support body and comprises a plurality of protrusions arranged at intervals, so that the secondary air enters the combustion chamber after heat exchange with the plurality of protrusions.

2. The pot support according to claim 1, characterized in that: The pot rack body and the plurality of protrusions are integrally formed components, and the bottom of the pot rack body is formed with the plurality of protrusions by stamping or stretching.

3. The pot support according to claim 1, characterized in that: The pot rack body and the plurality of protrusions are separately arranged, and the connection method between the two includes at least one of welding, riveting, screwing, clamping and interference fit.

4. The pot support according to claim 1, characterized in that: The raised heat exchanger further comprises: A base plate is arranged in a ring shape and connected to the bottom of the pot rack body; Wherein, the plurality of protrusions are all connected to the substrate, so that the secondary air enters the combustion chamber after heat exchange with the substrate and the plurality of protrusions.

5. The pot support according to claim 4, characterized in that: The substrate and the plurality of protrusions are integrally formed components, and the substrate is formed into the plurality of protrusions by stamping or stretching.

6. The pot support according to any one of claims 1 to 5, characterized in that: The plurality of protrusions are arranged at intervals along the circumferential direction and / or radial direction of the pot support body.

7. The pot support according to claim 6, characterized in that: The plurality of protrusions are arranged at intervals along the circumference of the pot support body to form one or more circles of protrusions arranged along the circumference of the pot support body; Wherein, the plurality of circles of protrusions are arranged at intervals in the radial direction of the pot support body.

8. The pot support according to claim 7, characterized in that: Along the radial direction pointing to the central axis of the pot support body, of the two adjacent circles of the protrusions, the protrusions located on the outer side have a larger projection area on the bottom of the pot support body along the height direction of the pot support body than the protrusions located on the inner side.

9. The pot support according to claim 7, characterized in that: In the same circle of protrusions, a first air outlet is defined between two adjacent protrusions, and along the radial direction of the pot rack body, the first air outlet is blocked by the protrusions of the adjacent circle.

10. The pot support according to claim 6, characterized in that: The plurality of protrusions are arranged at intervals along the radial direction of the pot support body to form a plurality of rows of protrusions arranged along the radial direction of the pot support body; Wherein, a plurality of rows of protrusions are arranged at intervals in the circumferential direction of the pot rack body.

11. The pot support according to claim 10, characterized in that: Along the radial direction pointing to the central axis of the pot support body, in the same row of the protrusions, the protrusions located on the outer side have a larger projection area on the bottom of the pot support body along the height direction of the pot support body than the protrusions located on the inner side.

12. The pot support according to claim 10, characterized in that: In the protrusions of the same row, a second air outlet is defined between two adjacent protrusions, and along the circumference of the pot rack body, the second air outlet is blocked by the protrusions of the adjacent row.

13. The pot support according to claim 6, characterized in that: Along the circumferential direction and / or radial direction of the pot support body, the plurality of protrusions are distributed at equal intervals.

14. The pot support according to any one of claims 1 to 5, characterized in that: The protrusions include at least one of convex hulls, convex points, convex strips and convex columns.

15. The pot support according to any one of claims 1 to 5, characterized in that: Each of the protrusions is protrudingly arranged along the height direction of the pot rack body or along a direction forming an angle with the height direction of the pot rack body.

16. The pot support according to any one of claims 1 to 5, characterized in that: The height of each protrusion is greater than or equal to 2 mm and less than or equal to 15 mm.

17. The pot support according to any one of claims 1 to 5, characterized in that: The pot support body is a multi-layer structure and at least comprises: Top plate; and The bottom plate is spliced ​​with the top plate along the height direction of the pot rack body to cooperate to enclose a heat insulation cavity, and a plurality of protrusions are arranged at the bottom of the bottom plate or are integrally formed with the bottom plate.

18. A cooking appliance, characterized in that: include: Burner; and The pot support according to any one of claims 1 to 17, wherein the pot support body surrounds the outer side of the burner.

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