Combustor and stove

Abstract

The utility model provides a combustor and a stove. The combustor comprises an inner combustion part, an outer ring combustion part, a connecting piece and heat exchange fins, and the inner combustion part is provided with an inner cavity channel and inner fire holes communicating with the inner cavity channel; the outer ring combustion part is annularly arranged on the outer side of the inner combustion part and is provided with an outer cavity channel and an outer fire hole communicated with the outer cavity channel, and an air supplementing flow channel is formed between the outer ring combustion part and the inner combustion part; the connecting piece is connected between the inner combustion part and the outer ring combustion part, a spoke cavity is formed in the connecting piece, and the spoke cavity communicates with the inner cavity channel and the outer cavity channel; the heat exchange fins are connected to the bottom of the outer ring combustion part and used for heating secondary air entering the air supplementing flow channel from the outside of the combustor. The kitchen range disclosed by the utility model is relatively good in use performance.

Description

Technical Field

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

[0002] A gas stove refers to a kitchen appliance that uses direct fire heating with gas fuels such as liquefied petroleum gas, artificial gas, and natural gas.

[0003] In the related art, a gas stove includes a burner and a pot rack, and the burner includes an outer ring fire cover and an inner ring fire cover connected together, and the outer ring fire cover and the inner ring fire cover are connected by a connecting web. When the gas stove is working, the gas enters the stove from the ejector pipe, enters the burner head after being adjusted by the gas valve, and is mixed with primary air at the same time. These mixed gases are ejected from the fire hole of the burner and ignited by the ignition device to form flames. During the combustion process, the secondary air is mixed to make it burn more fully. These flames are used to heat the pot placed on the pot rack.

[0004] However, in the above-mentioned gas stove, due to the structural design of the burner, the temperature of the above-mentioned secondary air is relatively low, so that the heating effect of the gas stove on the cookware is relatively poor, and further the overall performance of the gas stove is relatively poor. Utility Model Content

[0005] The embodiments of the present application provide a burner and a stove, which are used to solve the problem that the gas stove in the related art has a poor heating effect on the cookware, resulting in poor overall performance of the gas stove.

[0006] On the one hand, the present application provides a burner, including an inner combustion part, an outer ring combustion part, a connecting web and heat exchange fins, the inner combustion part having an inner cavity and an inner fire hole connected to the inner cavity; the outer ring combustion part is arranged on the outer side of the inner combustion part, and has an outer cavity and an outer fire hole connected to the outer cavity, and a supplementary air passage is formed between the outer ring combustion part and the inner combustion part; the connecting web is connected between the inner combustion part and the outer ring combustion part, a spoke cavity is arranged in the connecting web, and the spoke cavity connects the inner cavity and the outer cavity; the heat exchange fins are connected to the bottom of the outer ring combustion part, and are used to heat the secondary air entering the supplementary air passage from the outside of the burner.

[0007] As an optional embodiment, there are multiple heat exchange fins, and the multiple heat exchange fins are arranged at intervals along the circumference of the outer ring combustion part; the heat exchange fins extend in the direction from the outer edge to the inner edge of the outer ring combustion part, and an airflow channel is formed between two adjacent heat exchange fins.

[0008] That is to say, when the secondary air outside the burner flows to the supplementary air flow duct, it will pass through the air flow channel. Compared with the secondary air outside the burner directly flowing to the supplementary air flow duct, the flow path of the secondary air will be extended, that is, the contact time between the secondary air and the bottom of the outer ring combustion portion will be longer. In other words, the heat exchange time between the secondary air and the bottom of the burner will be longer, which makes the secondary air heated for a longer time. As a result, the temperature of the secondary air flowing to the supplementary air flow duct will be increased, and the temperature of the flame ejected from the inner fire hole and the outer fire hole can be increased.

[0009] As an optional embodiment, the heat exchange fin has a fin outer end arranged near the outer edge of the outer ring combustion portion and a fin inner end arranged near the inner edge of the outer ring combustion portion; the line between the center of the fin outer end and the center of the fin inner end has an angle with the line between the center of the fin outer end and the center of the outer ring combustion portion.

[0010] In this way, compared with the scheme in which the line connecting the center of the outer end of the fin and the center of the inner end of the fin coincides with the line connecting the center of the outer end of the fin and the center of the outer ring combustion portion, the flow time of the secondary air in the air flow channel can be extended, so that the secondary air can be heated for a longer time when it flows from the outside of the burner into the supplementary air flow channel. Therefore, when the secondary air flows into the supplementary air flow channel, its temperature will be higher, which can increase the temperature of the flame ejected from the inner fire hole and the outer fire hole, thereby improving the heating efficiency of the cookware.

[0011] As an optional embodiment, in the direction from the outer edge to the inner edge of the outer ring combustion portion, the heat exchange fin includes a plurality of fin segments connected together, and two adjacent fin segments are not consistent in the upward extension direction.

[0012] Such an arrangement enables the two side surfaces of the heat exchange fins that are relatively arranged along the circumference of the burner to be non-planar, which can increase the heat exchange area between the secondary air and the heat exchange fins, and further increase the temperature of the secondary air flowing to the supplementary air flow channel, and thus increase the temperature of the flames ejected from the inner fire holes and the outer fire holes; in addition, the flow time of the secondary air in the air flow channel can be increased to extend the time when the secondary air is heated, and further increase the temperature of the secondary air when it flows to the supplementary air flow channel.

[0013] As an optional implementation, the heat exchange fins are of a curved structure.

[0014] In this way, compared with the heat exchange fins extending in one direction, the heat exchange area between the curved heat exchange fins and the secondary air will be larger. At the same time, when multiple fin segments are connected together in the direction from the outer edge of the outer ring combustion portion to the inner edge of the outer ring combustion portion, the curved heat exchange fins will make the extension length of the airflow channel longer, which can extend the flow time of the secondary air in the airflow channel, thereby extending the heating time of the secondary air, so as to increase the temperature of the secondary air flowing to the supplementary air channel, and then increase the temperature of the flames ejected from the inner fire holes and the outer fire holes.

[0015] As an optional implementation, a plurality of ridges arranged at intervals are formed on the heat exchange fins; in the direction close to the inner edge of the outer ring combustion portion, the distance between two adjacent ridges gradually increases.

[0016] With such an arrangement, the heat exchange area between the secondary air and the heat exchange fins will gradually increase in the direction close to the inner edge of the outer ring combustion portion, so that the temperature of the secondary air will increase faster in the direction close to the inner edge of the outer ring combustion portion, and the temperature of the secondary air will be higher when it flows to the supplementary air channel, thereby further improving the heating efficiency of the cookware.

[0017] As an optional implementation, an edge of the heat exchange fin is connected to the bottom surface of the outer ring combustion portion.

[0018] In this way, by limiting the size of the connection area between the heat exchange fins and the outer ring combustion part, a larger heat exchange area is maintained between the secondary air and the heat exchange fins to increase the temperature of the secondary air flowing to the supplementary air passage.

[0019] As an optional implementation, the surface area of ​​the heat exchange fins gradually increases in a direction approaching the inner edge of the outer ring combustion portion.

[0020] It is not difficult to understand that when the surface area of ​​the heat exchange fins gradually increases in the direction close to the inner edge of the outer ring combustion portion, the temperature of the secondary air will also rise faster in the direction close to the inner edge of the outer ring combustion portion. In this way, when the secondary air flows to the end of the air flow channel close to the supplementary air flow channel, the temperature of the secondary air is the highest. Since the distance from the supplementary air flow channel is closer, the heat loss is smaller when the secondary air flows from the end of the air flow channel close to the supplementary air flow channel to the supplementary air flow channel. This makes the temperature of the secondary air flowing into the supplementary air flow channel higher, thereby increasing the temperature of the flames ejected from the inner fire hole and the outer fire hole.

[0021] As an optional implementation, a heat exchange element is provided on the heat exchange fin.

[0022] In this way, the heat exchange area between the secondary air and the heat exchange fins can be increased by setting the heat exchange element, so as to effectively improve the heating efficiency of the secondary air, thereby increasing the temperature of the secondary air flowing to the supplementary air flow channel, and further increasing the temperature of the flames ejected from the inner fire hole and the outer fire hole, thereby improving the heating efficiency of the cookware.

[0023] As an optional implementation, the heat exchange element includes at least one of a convex point, a convex hump, and a convex column.

[0024] As an optional implementation, a porous medium member is provided on the heat exchange fins. The heat exchange area between the heat exchange fins and the secondary air is increased by providing the porous medium member.

[0025] As an optional implementation, the porous medium member includes any one of foam metal, metal mesh, metal fiber, and zeolite.

[0026] As an optional implementation, the heat exchange fins and the outer ring combustion part are an integrated structure.

[0027] On the other hand, the present application provides a cooker including the burner mentioned above.

[0028] In the burner and stove provided in the embodiments of the present application, heat exchange fins are provided at the bottom of the outer ring combustion portion of the burner. During the use of the stove, the outer ring combustion portion will be indirectly heated due to the effect of heat radiation, so that the surface temperature of the outer ring combustion portion will be increased. Moreover, heat exchange fins are provided at the bottom of the outer ring combustion portion to increase the heat exchange area between the secondary air and the outer ring combustion portion. When the secondary air passes through the outer ring combustion portion, the surface temperature of the outer ring combustion portion is relatively high and the heat exchange area between the secondary air and the outer ring combustion portion is relatively large, so the secondary air will be effectively preheated, so that the temperature of the preheated secondary air is relatively high, and it is mixed with the mixed gas ejected from the inner fire hole and the outer fire hole to form a flame with a relatively high ignition temperature, so that the cookware can be efficiently and effectively heated. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 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 these drawings without paying creative work.

[0030] Figure 1 A schematic diagram of the three-dimensional structure of a burner provided in an embodiment of the present application;

[0031] Figure 2 An exploded view of a burner provided in an embodiment of the present application;

[0032] Figure 3 for Figure 1 Schematic diagram of the plane structure in the first perspective;

[0033] Figure 4 for Figure 3 Cross-sectional view along AA direction;

[0034] Figure 5 A diagram showing the use status of the cooker provided in the embodiment of the present application;

[0035] Figure 6 for Figure 1 A schematic diagram of the planar structure at a second viewing angle;

[0036] Figure 7 A schematic diagram of the structure of a heat exchange fin in a burner provided in an embodiment of the present application;

[0037] Figure 8 Another schematic diagram of the structure of the burner provided in the embodiment of the present application.

[0038] Description of reference numerals:

[0039] 1. Inner combustion section; 2. Outer ring combustion section;

[0040] 11. Inner cavity channel; 12. Inner fire hole; 21. Outer cavity channel; 22. Outer fire hole; 30. Connecting width; 31. Spoke cavity; 41. Heat exchange fins; 10. Inner ring fire cover; 20. Outer ring fire cover; 50. Pot support feet; 60. Support legs; 70. Base; 71. Upper seat; 72. Lower seat; 80. Air flow channel; 90. Pot stand body;

[0041] 200, burner; 411, fin segment; 412, ridge; 414, fin outer end; 415, fin inner end; 20a, air flow channel; 100, pot support;

[0042] 1000, stove; 2000, pots and pans; 3000, countertop. DETAILED DESCRIPTION

[0043] The principles and features of the present application are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present application and are not used to limit the scope of the present application.

[0044] In the related art, a gas stove includes a burner and a pot rack, and the burner includes an outer ring fire cover and an inner ring fire cover connected together, and the outer ring fire cover and the inner ring fire cover are connected by a connecting web. When the gas stove is working, the gas enters the stove from the ejector pipe, enters the burner head after being adjusted by the gas valve, and is mixed with primary air at the same time. These mixed gases are ejected from the fire hole of the burner and ignited by the ignition device to form a flame. During the combustion process, the secondary air is mixed to make it burn more fully. These flames are used to heat the pots placed on the pot rack. However, in the above-mentioned gas stove, due to the structural design of the burner, the temperature of the above-mentioned secondary air is relatively low, so that the heating effect of the gas stove on the pot is relatively poor, and the overall performance of the gas stove is relatively poor.

[0045] Therefore, the embodiment of the present application provides a burner and a stove, which can increase the temperature of the secondary air, so that the stove provided by the embodiment of the present application has a better heating effect on the pot, and the overall performance of the stove is better.

[0046] The embodiments of the present application will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0047] See also Figures 1 to 4 , Figure 1 A schematic diagram of the three-dimensional structure of a burner provided in an embodiment of the present application, Figure 2 An exploded view of a burner provided in an embodiment of the present application, Figure 3 for Figure 1 Schematic diagram of the plane structure from the first perspective, Figure 4 for Figure 3 Cross-sectional view along the AA direction. As shown in the figure, the present embodiment provides a burner 200, including an inner combustion part 1, an outer ring combustion part 2, a connecting web 30 and heat exchange fins 41, wherein the inner combustion part 1 has an inner cavity 11 and an inner fire hole 12 connected to the inner cavity 11; the outer ring combustion part 2 is arranged on the outer side of the inner combustion part 1, and has an outer cavity 21 and an outer fire hole 22 connected to the outer cavity 21, and a supplementary air flow channel 20a is formed between the outer ring combustion part 2 and the inner combustion part 1; the connecting web 30 is connected between the inner combustion part 1 and the outer ring combustion part 2, and a spoke cavity 31 is arranged in the connecting web 30, and the spoke cavity 31 connects the inner cavity 11 and the outer cavity 21; the heat exchange fins 41 are connected to the bottom of the outer ring combustion part 2, and are used to heat the secondary air entering the supplementary air flow channel 20a from the outside of the burner 200.

[0048] Please combine Figure 5 , Figure 5A diagram of the use state of the stove provided in the embodiment of the present application. During the use of the stove 1000, the outer ring combustion part 2 will be indirectly heated due to the effect of heat radiation, so that the surface temperature of the outer ring combustion part 2 will be increased. In addition, the heat exchange fins 41 are arranged at the bottom of the outer ring combustion part 2, which can increase the heat exchange area between the secondary air and the outer ring combustion part 2. When the secondary air passes through the outer ring combustion part 2, due to the high surface temperature of the outer ring combustion part 2 and the large heat exchange area between the secondary air and the outer ring combustion part 2, the secondary air will be effectively preheated, so that the temperature of the preheated secondary air is high, and it is mixed with the mixed gas ejected from the inner fire hole 12 and the outer fire hole 22 to form a flame with a high ignition temperature, which can efficiently and effectively heat the pot 2000.

[0049] Specifically, in the present embodiment, the burner 200 may include an inner ring fire cover 10, an outer ring fire cover 20 and a base 70, the inner ring fire cover 10 and the outer ring fire cover 20 are both covered on the top of the base 70, the inner ring fire cover 10 and the middle structure of the base 70 form the above-mentioned inner combustion part 1, and the inner ring fire cover 10 and the base 70 enclose the above-mentioned inner cavity 11, the inner fire hole 12 is opened on the inner ring fire cover 10, the outer ring fire cover 20 and the peripheral structure of the base 70 form the above-mentioned outer ring combustion part 2, and the outer ring fire cover 20 and the base 70 enclose the above-mentioned outer cavity 21, and the outer fire hole 22 is opened on the outer ring fire cover 20.

[0050] The inner edge of the connecting web 30 is connected to the inner ring fire cover 10 , and the outer edge of the connecting web 30 is connected to the base 70 .

[0051] Furthermore, the base 70 may include an upper seat 71 and a lower seat 72 connected together, the connecting web 30 may be connected only to the upper seat 71, or may be connected to both the upper seat 71 and the lower seat 72 at the same time, and the outer cavity 21 should be formed by the outer ring fire cover 20 and the outer edge of the upper seat 71, the heat exchange fins 41 are arranged at the bottom of the lower seat 72, and the supplementary air flow channel 20a passes through the lower seat 72, the upper seat 71 and the connecting web 30 at the same time.

[0052] It should be noted that, in some other implementations, the base 70 may also be an integrated component. Here, no specific limitation is imposed on the structure of the base 70 in this embodiment.

[0053] Since the outer ring combustion part 2 extends along the circumference of the burner 200, during the use of the cooker 1000, the heat exchange between the secondary air and the outer ring combustion part 2 also exists at any position along the circumference of the burner 200. Therefore, in order to make the secondary air fully exchange heat with the bottom of the outer ring combustion part 2, a plurality of heat exchange fins 41 can be provided, and the plurality of heat exchange fins 41 are arranged at intervals along the circumference of the outer ring combustion part 2. In this way, the secondary air can fully exchange heat with the bottom of the outer ring combustion part 2, so as to fully heat the secondary air and increase the temperature of the preheated secondary air, thereby increasing the temperature of the flame ejected from the outer fire hole 22 and the inner fire hole 12, so as to improve the heating effect on the cooker 2000.

[0054] Please combine Figure 6 , Figure 6 for Figure 1 Schematic diagram of the planar structure under the second viewing angle. Specifically, an airflow channel 80 is formed between two adjacent heat exchange fins 41. That is to say, when the secondary air outside the burner 200 flows to the supplementary air flow channel 20a, it will pass through the airflow channel 80. Compared with the secondary air outside the burner 200 directly flowing to the supplementary air flow channel 20a, the flow path of the secondary air will be extended, that is, the contact time between the secondary air and the bottom of the outer ring combustion part 2 will be longer. In other words, the heat exchange time between the secondary air and the bottom of the burner 200 will be longer, which makes the secondary air heated for a longer time. As a result, the temperature of the secondary air flowing to the supplementary air flow channel 20a will be increased, and then the flame temperature ejected from the inner fire hole 12 and the outer fire hole 22 can be increased.

[0055] It is understandable that if the extension length of the airflow channel 80 is longer, the secondary air flows longer in the airflow channel 80, so that the secondary air is heated longer. Therefore, in some optional embodiments, the heat exchange fin 41 has a fin outer end 414 arranged near the outer edge of the outer ring combustion part 2 and a fin inner end 415 arranged near the inner edge of the outer ring combustion part 2; the line between the center of the fin outer end 414 and the center of the fin inner end 415 and the line between the center of the fin outer end 414 and the center of the outer ring combustion part 2 have an angle. Figure 6 In this way, compared with the scheme in which the line between the center of the fin outer end 414 and the center of the fin inner end 415 coincides with the line between the center of the fin outer end 414 and the center of the outer ring combustion portion 2, the flow time of the secondary air in the air flow channel 80 can be extended, so that the secondary air can be heated for a longer time when it flows from the outside of the burner 200 to the supplementary air flow channel 20a, so that when the secondary air flows into the supplementary air flow channel 20a, its temperature will be higher, which can increase the temperature of the flame ejected from the inner fire hole 12 and the outer fire hole 22, so as to improve the heating efficiency of the cookware 2000.

[0056] It should be noted that the secondary air outside the burner 200 will eventually flow to the supplementary air passage 20a, so the overall flow direction of the secondary air cannot be destroyed due to the setting of the heat exchange fins 41. Therefore, in some specific embodiments, the heat exchange fins 41 extend in the direction from the outer edge to the inner edge of the outer ring combustion part 2. In other words, the air flow channel 80 also extends from the outer edge of the outer ring combustion part 2 to the inner edge of the outer ring combustion part 2. In this way, on the one hand, it can not only extend the flow time of the secondary air from the outside of the burner 200 to the supplementary air passage 20a, but also increase the heat exchange area between the secondary air and the bottom of the burner 200 to increase the temperature of the secondary air flowing to the supplementary air passage 20a. On the other hand, by limiting the extension direction of the heat exchange fins 41, the secondary air can flow smoothly to the supplementary air passage 20a, that is, the heat exchange fins 41 also have a certain guiding effect.

[0057] In addition, in this embodiment, the connecting web 30 is connected to the base 70. Therefore, in order to avoid the connection between the base 70 and the connecting web 30, the extension lengths of the plurality of heat exchange fins 41 in the direction from the outer edge to the inner edge of the outer ring combustion part 2 may be unequal. For example, the longer fins may extend from the outer edge of the outer ring combustion part 2 to the supplementary air flow channel 20a, and the shorter fins may extend from the outer edge of the outer ring combustion part 2 to the connection holes or connection columns on the base 70 connected to the connecting web 30. Here, the extension length of the heat exchange fins 41 is not specifically limited.

[0058] It can be seen from the above that the temperature of the secondary air flowing to the supplementary air passage 20a can be increased by extending the flow path of the secondary air and / or increasing the heat exchange area between the secondary air and the bottom of the outer ring combustion portion 2. Based on this, the shape of the heat exchange fins 41 themselves can be improved to further increase the temperature of the secondary air flowing to the supplementary air passage 20a.

[0059] Please combine Figure 7 , Figure 7 A schematic diagram of the structure of the heat exchange fins in the burner provided in the embodiment of the present application. Figure 7 As shown, in one embodiment, the heat exchange fin 41 may include a plurality of fin sections 411 connected together in the height direction, and the extension directions of two adjacent fin sections 411 in the height direction are inconsistent. In this way, the two side surfaces of the heat exchange fin 41 arranged opposite to each other along the circumference of the burner 200 are in a non-planar form, which can increase the heat exchange area between the secondary air and the heat exchange fin 41, and further increase the temperature of the secondary air flowing to the supplementary air flow channel 20a, thereby increasing the temperature of the flame ejected from the inner fire hole 12 and the outer fire hole 22.

[0060] It should be noted that the height direction mentioned above is Figure 1 , Figure 2 , Figure 4 and Figure 5 The direction of the zz axis is consistent.

[0061] Please combine Figure 8 , Figure 8 Another structural schematic diagram of the burner provided in the embodiment of the present application. In another embodiment, in the direction from the outer edge to the inner edge of the outer ring combustion portion 2, the heat exchange fin 41 includes a plurality of fin sections 411 connected together, and the two adjacent fin sections 411 are inconsistent in the upward extension direction. Similarly, such an arrangement makes the two side surfaces of the heat exchange fin 41 that are relatively arranged along the circumference of the burner 200 in a non-planar form, which can increase the heat exchange area between the secondary air and the heat exchange fin 41, and can further increase the temperature of the secondary air flowing to the supplementary air flow channel 20a, and then can increase the temperature of the flame ejected from the inner fire hole 12 and the outer fire hole 22; in addition, it can increase the flow time of the secondary air in the air flow channel 80 to extend the time when the secondary air is heated, and can further increase the temperature of the secondary air when it flows to the supplementary air flow channel 20a.

[0062] Furthermore, when the heat exchange fin 41 includes a plurality of fin segments 411 connected together in the direction from the outer edge to the inner edge of the outer ring combustion part 2, a plurality of convex ridges 412 arranged at intervals may be formed on the heat exchange fin 41, and the distance between two adjacent convex ridges 412 may gradually increase in the direction close to the inner edge of the outer ring combustion part 2. With such a configuration, the heat exchange area between the secondary air and the heat exchange fin 41 will gradually increase in the direction close to the inner edge of the outer ring combustion part 2, so that the temperature of the secondary air increases faster in the direction close to the inner edge of the outer ring combustion part 2, so that the temperature of the secondary air is higher when it flows to the supplementary air channel 20a, so as to further improve the heating efficiency of the cookware 2000.

[0063] In another embodiment, the heat exchange fin 41 may further include a plurality of fin sections 411 connected together along the circumference of the outer ring combustion part 2, and the extension directions of two adjacent fin sections 411 in the circumference of the outer ring combustion part 2 are inconsistent. In this way, the top and bottom surfaces of the heat exchange fin 41 are non-planar, which can increase the heat exchange area between the secondary air and the heat exchange fin 41, and further increase the temperature of the secondary air flowing to the supplementary air flow channel 20a, thereby increasing the temperature of the flame ejected from the inner fire hole 12 and the outer fire hole 22.

[0064] Regardless of the direction in which the multiple fin segments 411 are connected together, the heat exchange fins 41 can be in a curved structure. In this way, compared with the heat exchange fins 41 extending in one direction, the heat exchange area between the curved heat exchange fins 41 and the secondary air will be larger. At the same time, when the multiple fin segments 411 are connected together in the direction from the outer edge of the outer ring combustion part 2 to the inner edge of the outer ring combustion part 2, the curved heat exchange fins 41 will make the extension length of the airflow channel 80 longer, which can extend the flow time of the secondary air in the airflow channel 80, thereby extending the heating time of the secondary air, so as to increase the temperature of the secondary air flowing to the supplementary air channel 20a, and then increase the temperature of the flame ejected from the inner fire hole 12 and the outer fire hole 22.

[0065] It is not difficult to understand that the connection between the above-mentioned heat exchange fin 41 and the bottom surface of the outer ring combustion part 2 can be a connection between surfaces or a connection between multiple edges and the outer ring combustion part 2, so that the area occupied by the connection between the heat exchange fin 41 and the outer ring combustion part 2 is larger. Therefore, in some embodiments, an edge of the heat exchange fin 41 is connected to the bottom surface of the outer ring combustion part 2, and the edge can be an edge arranged near the outer edge of the outer ring combustion part 2, or an edge arranged near the inner edge of the outer ring combustion part 2.

[0066] For example, if the edge is an edge arranged near the outer edge of the outer ring combustion part 2, then one end of the heat exchange fin 41 near the inner edge of the outer ring combustion part 2 is tilted downward relative to the bottom surface of the outer ring combustion part 2; if the edge is an edge arranged near the inner edge of the outer ring combustion part 2, then one end of the heat exchange fin 41 near the outer edge of the outer ring combustion part 2 is tilted downward relative to the bottom surface of the outer ring combustion part 2. In this way, by limiting the size of the connection area between the heat exchange fin 41 and the outer ring combustion part 2, a larger heat exchange area is maintained between the secondary air and the heat exchange fin 41, so as to increase the temperature of the secondary air flowing to the supplementary air channel 20a.

[0067] From the above, it can be known that if the temperature of the secondary air is the highest when it is close to the supplementary air flow channel 20a, the secondary air can have less heat loss when flowing to the supplementary air flow channel 20a. Therefore, the surface area of ​​the heat exchange fins 41 gradually increases in the direction close to the inner edge of the outer ring combustion part 2. It is not difficult to understand that when the surface area of ​​the heat exchange fins 41 gradually increases in the direction close to the inner edge of the outer ring combustion part 2, the temperature of the secondary air will also rise faster in the direction close to the inner edge of the outer ring combustion part 2. In this way, when the secondary air flows to the end of the air flow channel 80 close to the supplementary air flow channel 20a, the temperature of the secondary air is the highest. Since the distance from the supplementary air flow channel 20a is short, the heat loss is small when the secondary air flows from the end of the air flow channel 80 close to the supplementary air flow channel 20a to the supplementary air flow channel 20a, so that the temperature of the secondary air flowing into the supplementary air flow channel 20a is higher, and then the temperature of the flame ejected from the inner fire hole 12 and the outer fire hole 22 can be increased.

[0068] In other embodiments, the structure of the heat exchange fins 41 can be improved to increase the heat exchange area between the secondary air and the heat exchange fins 41, for example, a heat exchange element (not shown in the figure) is provided on the heat exchange fins 41. It should be noted that the heat exchange element can be provided at any position on the surface of the heat exchange fins 41. In this way, the heat exchange area between the secondary air and the heat exchange fins 41 can be increased by providing the heat exchange element, so as to effectively improve the heating efficiency of the secondary air, thereby improving the temperature of the secondary air flowing to the air supply channel 20a, further improving the temperature of the flames ejected from the inner fire hole 12 and the outer fire hole 22, and improving the heating efficiency of the cookware 2000.

[0069] The heat exchange element includes at least one of a convex point, a convex hump, and a convex column.

[0070] Among them, the convex point can be understood as a spherical structure with a smaller diameter connected to the surface of the heat exchange fin 41, and it can be understood that the connection between the spherical structure and the heat exchange fin 41 is a connection between points and planes, and the "point" in "point plane" is any point on the spherical structure, and the "plane" in "point plane" is the surface of the heat exchange fin 41; the convex hull can be understood as a part of the spherical structure with a slightly larger radius, and it can be understood that the connection between the convex hull and the heat exchange fin 41 is a connection between planes. Specifically, the convex hull can be understood as a spherical structure with a slightly larger radius cut along any position, and the cut surface formed is the surface connected to the heat exchange fin 41; and the convex column can be understood as a column with an angle between the axial direction and the extension direction of the surface of the heat exchange fin 41, and the column can be a cylinder, a prism, etc.

[0071] Here, there is no particular limitation on the type of the heat exchange element.

[0072] Furthermore, a porous medium member (not shown in the figure) may be provided on the heat exchange fin 41 , and the heat exchange area between the heat exchange fin 41 and the secondary air may be increased by providing the porous medium member.

[0073] The porous medium member includes any one of foam metal, metal mesh, metal fiber and zeolite. It is understandable that the porous medium member can be made of any one of foam metal, metal mesh, metal fiber and zeolite as raw material.

[0074] Specifically, foam metal refers to a special metal material containing foam pores; the metal mesh can be a metal plate mesh, that is, a metal plate with holes of various shapes on the surface; metal fiber refers to a fiber-shaped material with a high metal content, continuous distribution of metal materials, and a lateral size of microns; zeolite refers to a microporous crystalline aluminosilicate material.

[0075] In some optional embodiments, the above-mentioned foam metal may be foam copper. Here, there is no specific limitation on the type of material used to make the porous medium member.

[0076] It is not difficult to understand that when the heat exchange fins 41 and the outer ring combustion part 2 are an integrated structure, it is more convenient to process the burner 200. Therefore, as an optional embodiment, the heat exchange fins 41 and the outer ring combustion part 2 are an integrated structure. Specifically, the heat exchange fins 41 and the lower seat 72 are an integrated structure, and the heat exchange fins 41 here can be formed on the bottom surface of the lower seat 72 by stamping or stretching. Here, there is no specific limitation on the molding method of the heat exchange fins 41.

[0077] It should be noted that, in this embodiment, the bottom ends of each heat exchange fin 41 may be at the same height or at different heights. Here, there is no restriction on the bottom height of the heat exchange fin 41 .

[0078] The present embodiment further provides a stove 1000, comprising the burner 200 in the above-mentioned embodiment, and the stove 1000 should also include a pot rack 100, the pot rack 100 includes a pot rack body 90, pot legs 50 and support legs 60, the pot rack body 90 is arranged around the burner 200, the pot legs 50 are arranged on the top of the pot rack body 90 to support the pot 2000, and the support legs 60 are arranged on the bottom of the pot rack body 90 to support the table top 3000.

[0079] The pot support legs 50 and the support legs 60 can be arranged in a plurality of spaces along the circumference of the pot rack body 90. The number of the pot support legs 50 and the support legs 60 is not limited.

[0080] It should be noted that the stove 1000 provided in this embodiment should also include other components, such as a blast device, etc. Here, other components in the stove 1000 provided in this embodiment are not introduced one by one.

[0081] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0082] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0083] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0084] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0085] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0086] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A burner, characterized in that: include: An inner combustion portion having an inner cavity and an inner fire hole communicating with the inner cavity; An outer ring combustion part is arranged outside the inner combustion part and has an outer cavity and an outer fire hole communicating with the outer cavity, and a supplementary flow channel is formed between the outer ring combustion part and the inner combustion part; A connecting web connected between the inner combustion portion and the outer ring combustion portion, wherein a spoke cavity is provided in the connecting web, and the spoke cavity communicates with the inner cavity and the outer cavity; as well as The heat exchange fins are connected to the bottom of the outer ring combustion part and are used to heat the secondary air entering into the supplementary air passage from the outside of the burner.

2. The burner according to claim 1, characterized in that There are a plurality of heat exchange fins, and the plurality of heat exchange fins are arranged at intervals along the circumference of the outer ring combustion portion; The heat exchange fins extend in a direction from the outer edge to the inner edge of the outer ring combustion portion, and an air flow channel is formed between two adjacent heat exchange fins.

3. The burner according to claim 2, characterized in that: The heat exchange fin has a fin outer end arranged near the outer edge of the outer ring combustion portion and a fin inner end arranged near the inner edge of the outer ring combustion portion; A line connecting the center of the outer end of the fin and the center of the inner end of the fin and a line connecting the center of the outer end of the fin and the center of the outer ring combustion part have an angle.

4. The burner according to claim 2, characterized in that: In the direction from the outer edge to the inner edge of the outer ring combustion portion, the heat exchange fin includes a plurality of fin segments connected together, and two adjacent fin segments are not consistent in the upward extension direction.

5. The burner according to claim 4, characterized in that The heat exchange fins are in a curved structure.

6. The burner according to claim 4, characterized in that The heat exchange fins are formed with a plurality of convex ridges arranged at intervals; In the direction approaching the inner edge of the outer ring combustion portion, the distance between two adjacent ridges gradually increases.

7. The burner according to claim 2, characterized in that An edge of the heat exchange fin is connected to the bottom surface of the outer ring combustion part.

8. The burner according to claim 7, characterized in that The surface area of ​​the heat exchange fins gradually increases in a direction approaching the inner edge of the outer ring combustion portion.

9. The burner according to claim 1, characterized in that The heat exchange fins are provided with heat exchange components.

10. The burner according to claim 9, characterized in that The heat exchange element includes at least one of a convex point, a convex hump, and a convex column.

11. The burner according to claim 1, characterized in that The heat exchange fins are provided with porous medium members.

12. The burner according to claim 11, characterized in that The porous medium member includes any one of foam metal, metal mesh, metal fiber and zeolite.

13. The burner according to any one of claims 1 to 12, characterized in that The heat exchange fins and the outer ring combustion part are an integrated structure.

14. A cooking appliance, characterized in that: A burner comprising the burner according to any one of claims 1 to 13.

Images