Combustor and stove

Abstract

The invention discloses a combustor and a stove. The burner includes: a base; the gas distribution disc is arranged on the base, the gas distribution disc comprises a middle part and an outer ring part, the middle part is connected with the outer ring part, the outer ring part is arranged around the middle part, the middle part is provided with an inner ring gas mixing cavity and inner ring fire holes, and the inner ring fire holes are communicated with the inner ring gas mixing cavity; the outer ring fire cover is arranged on the outer ring part, an outer ring gas mixing cavity is defined by the outer ring fire cover and the outer ring part, the outer ring fire cover is provided with outer ring fire holes, and the outer ring fire holes are communicated with the outer ring gas mixing cavity. According to the burner, the inner ring gas mixing cavity and the inner ring fire holes are formed in the middle of the gas distribution disc, so that an inner ring fire cover can be saved, the material consumption of the burner is reduced, and the purposes of reducing cost and improving efficiency are achieved.

Description

Technical Field

[0001] This invention relates to the field of stove technology, and in particular to a burner and stove. Background Technology

[0002] In related technologies, the burner includes an inner ring burner cap and a gas distribution plate. During assembly, the inner ring burner cap is placed on the gas distribution plate to form an inner ring mixing chamber. However, this assembly method results in higher material costs for the burner. Summary of the Invention

[0003] The present invention provides a burner and a stove to solve at least one of the above-mentioned technical problems.

[0004] A burner according to an embodiment of the present invention includes:

[0005] Base;

[0006] The gas distribution plate is disposed on the base. The gas distribution plate includes a middle part and an outer ring part. The middle part is connected to the outer ring part. The outer ring part is arranged around the middle part. The middle part is provided with an inner ring mixing chamber and an inner ring flame hole. The inner ring flame hole is connected to the inner ring mixing chamber.

[0007] An outer ring flame cap is disposed on the outer ring portion, and the outer ring flame cap and the outer ring portion form an outer ring mixing chamber. The outer ring flame cap is provided with an outer ring flame hole, which communicates with the outer ring mixing chamber.

[0008] In the aforementioned burner, the middle part of the gas distribution plate is provided with an inner ring mixing chamber and an inner ring flame hole, which can save the inner ring flame cap, reduce the amount of material used in the burner, and achieve the purpose of cost reduction and efficiency improvement.

[0009] In some embodiments, the gas distribution plate includes an ejector tube connected to the side of the intermediate portion facing the base, the ejector tube having an ejector channel communicating with the inner annular mixing chamber, the intermediate portion including a top plate facing the ejector channel, and the inner annular flame hole penetrating the top plate.

[0010] In some embodiments, the outer surface of the top plate of the middle part includes a middle region and a peripheral region. The peripheral region connects the middle region and the circumferential side of the middle part along the circumferential direction of the burner. The inner ring flame hole penetrates the peripheral region. The middle region is arranged in a horizontal direction. The peripheral region is inclined towards the base relative to the middle region, and the inclination angle ranges from [10°, 30°].

[0011] In some embodiments, the gas distribution plate includes a plurality of connecting portions, which are spaced apart along the circumferential direction of the burner. The connecting portions connect the middle portion and the outer ring portion. In the axial direction of the burner, the inner ring fire hole is provided corresponding to the gap between two adjacent connecting portions.

[0012] In some embodiments, the gas distribution plate has multiple ribs on the side opposite to the outer ring burner cap. The multiple ribs are spaced apart along the circumferential direction of the burner, and an air channel is formed between two adjacent ribs. The air channel includes a primary air channel and a secondary air channel, which are alternately arranged along the circumferential direction of the burner. A bottom mixing chamber is provided in the base. The primary air channel connects to the bottom mixing chamber, and the secondary air channel connects to the gap between two adjacent connecting parts.

[0013] In some embodiments, of the two ribs forming an air passage, each rib has an arc-shaped protrusion on its surface facing the air passage in the region near the air inlet of the air passage.

[0014] In some embodiments, the surface of the gas distributor facing the base is provided with a guide mounting structure, the base is provided with a bottom mixing chamber, and the guide mounting structure includes a plurality of guide blocks, which are spaced apart along the circumferential direction of the burner and contact or gap fit with the surface of the base facing the bottom mixing chamber.

[0015] In some embodiments, the guide block includes a bottom surface, a side surface, and an inclined surface, the inclined surface being inclined from the side surface toward the central axis of the burner and connecting to the bottom surface.

[0016] In some embodiments, the outer ring flame hole is located on the circumferential side of the outer ring flame cover, and a flow guiding space is provided at the connection between the circumferential side of the outer ring flame cover and the top surface. The flow guiding space is configured to guide the secondary air above the outer ring flame cover to the circumferential side of the outer ring flame cover.

[0017] One embodiment of the present invention includes a burner according to any of the above embodiments.

[0018] In the aforementioned stove, the middle part of the gas distribution plate is provided with an inner ring mixing chamber and an inner ring flame hole, which can save the inner ring flame cap, reduce the amount of material used in the burner, and achieve the purpose of cost reduction and efficiency improvement.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is one of the perspective schematic diagrams of a burner according to an embodiment of the present invention;

[0022] Figure 2 This is one of the exploded view diagrams of the burner according to an embodiment of the present invention;

[0023] Figure 3 This is a second perspective view of the burner according to an embodiment of the present invention;

[0024] Figure 4 This is a second exploded view of the burner according to an embodiment of the present invention;

[0025] Figure 5 This is the third exploded view of the burner according to an embodiment of the present invention;

[0026] Figure 6 This is one of the cross-sectional schematic diagrams of the burner according to an embodiment of the present invention;

[0027] Figure 7 This is a second cross-sectional schematic diagram of the burner according to an embodiment of the present invention;

[0028] Figure 8 This is a third cross-sectional schematic diagram of the burner according to an embodiment of the present invention;

[0029] Figure 9 This is a three-dimensional schematic diagram of the air distribution plate according to an embodiment of the present invention;

[0030] Figure 10 This is an exploded view of the air distribution plate according to an embodiment of the present invention.

[0031] Explanation of key component reference numerals:

[0032] Burner 200, base 102, gas distribution plate 104, outer ring burner cap 106, middle section 108, outer ring section 110, inner ring mixing chamber 112, inner ring flame hole 114, outer ring mixing chamber 116, outer ring flame hole 118, bottom mixing chamber 120, connecting pipe 122, nozzle seat 124, first chamber 126, second chamber 128, thermocouple 130, ignition needle 132, primary air passage 134, ejector tube 136, ejector channel 13 8. Top plate 140, middle area 142, peripheral area 144, connecting part 146, connecting chamber 148, gap 150, rib 152, secondary air channel 154, arc-shaped protrusion 156, first part 158, second part 160, fastener 162, first mounting hole 164, second mounting hole 166, guide mounting structure 168, guide block 170, bottom surface 172, side surface 174, inclined surface 176, flow guiding space 178. Detailed Implementation

[0033] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] The following disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0038] Please refer to Figures 1 to 6 An embodiment of the present invention provides a burner 200 including a base 102, a gas distribution plate 104, and an outer ring burner cap 106. The gas distribution plate 104 is disposed on the base 102 and includes a middle portion 108 and an outer ring portion 110. The middle portion 108 is connected to the outer ring portion 110, and the outer ring portion 110 surrounds the middle portion 108. The middle portion 108 has an inner ring mixing chamber 112 and an inner ring flame hole 114, which communicates with the inner ring mixing chamber 112. The outer ring burner cap 106 is disposed on the outer ring portion 110, and the outer ring burner cap 106 and the outer ring portion 110 form an outer ring mixing chamber 116. The outer ring burner cap 106 has an outer ring flame hole 118, which communicates with the outer ring mixing chamber 116.

[0039] In the aforementioned burner 200, the middle part 108 of the gas distribution plate 104 is provided with an inner ring mixing chamber 112 and an inner ring flame hole 114, which can save the inner ring flame cover, reduce the material consumption of the burner 200, and achieve the purpose of cost reduction and efficiency improvement.

[0040] Specifically, in one embodiment, the burner 200 can be an upper-inlet burner, and the base 102 can serve as the bottom cup of the burner 200. The base 102 is provided with a bottom mixing chamber 120. A connecting pipe 122 is also provided on the base 102 for connecting to a gas pipeline. A nozzle seat 124 is provided inside the bottom mixing chamber 120, and a nozzle can be installed in the nozzle seat 124. Gas enters the connecting pipe 122 through the gas pipeline, and the connecting pipe 122 delivers the gas to the nozzle, which can inject gas into the bottom mixing chamber 120. Optionally, in other embodiments, the burner 200 can be a lower-inlet burner, and the base 102 can serve as a burner head, which may include an ejector tube. The present invention does not specifically limit the material of the burner 200. Optionally, the burner 200 can be made of copper.

[0041] The gas distributor 104 is mounted on the base 102. The function of the gas distributor 104 is to distribute the mixture of fuel gas and air to the inner ring burner 114 and the outer ring burner 118. Specifically, the gas distributor 104 includes a middle part 108 and an outer ring part 110. The middle part 108 is connected to the outer ring part 110, and the outer ring part 110 is arranged around the middle part 108. The middle part 108 is provided with an inner ring mixing chamber 112 and an inner ring burner 114. The inner ring burner 114 is connected to the inner ring mixing chamber 112. The mixed gas can enter the inner ring mixing chamber 112 from the bottom mixing chamber 120 and be ejected from the inner ring burner 114.

[0042] In related technologies, the middle section of the gas distribution plate has a chamber with an opening at the top. The burner also includes an inner ring flame cap with inner ring flame holes. The inner ring flame cap is positioned on the middle section and covers the opening, thus forming an inner ring mixing chamber with the middle section. To install the inner ring flame cap, the middle section has a thicker chamber wall to provide a first mounting step, and the inner ring flame cap has a second mounting step. The first and second mounting steps mate to assemble the inner ring flame cap to the middle section. However, this assembly method requires more materials to manufacture the burner, resulting in higher burner costs.

[0043] In this embodiment of the invention, since the inner annular mixing chamber 112 and the inner annular flame hole 114 are directly formed in the intermediate portion 108, that is, the inner annular flame hole 114 is directly formed by opening a hole on the top surface of the intermediate portion 108, the inner annular flame cap can be omitted. Therefore, the intermediate portion 108 does not need to manufacture the mounting structure required to match the inner annular flame cap, thereby reducing material usage and lowering the cost of the burner 200, achieving the goal of cost reduction and efficiency improvement. In one example, the burner 200 can be made of copper, and the burner 200 of this embodiment of the invention can reduce copper usage by 10% to 20%.

[0044] An outer ring flame cap 106 is disposed on the outer ring portion 110. Specifically, the outer ring flame cap 106 has a first chamber 126, and the outer ring portion 110 has a second chamber 128. The bottom of the first chamber 126 is open, and the top of the second chamber 128 is open. When the outer ring flame cap 106 is disposed on the outer ring portion 110, the first chamber 126 and the second chamber 128 are connected to form an outer ring mixing chamber 116. A mixture of air and fuel gas can be transported from the inner ring mixing chamber 112 to the outer ring mixing chamber 116 and then ejected from the outer ring flame hole 118. Optionally, in other embodiments, the outer ring flame cap 106 may not have a first chamber 126. The outer ring flame cap 106 may be directly placed on the outer ring portion 110, closing the top opening of the second chamber 128 to form the outer ring mixing chamber 116.

[0045] Optionally, the burner 200 further includes a thermocouple 130 and an ignition needle 132, which are mounted on the base 102. The thermocouple 130 may be positioned near the circumferential side of the outer ring burner cap 106 and correspond to the outer ring burner hole 118. Optionally, the burner of this embodiment can be a two-ring burner or a three-ring burner, and this invention does not specifically limit this. In the embodiment shown in the figure, the burner 200 is a three-ring burner. The outer ring burner cap 106 has a middle ring burner hole on the side near the middle portion 108, and the middle ring burner hole communicates with the outer ring mixing chamber 116.

[0046] A primary air passage 134 is formed between the gas distribution plate 104 and the base 102, and the primary air passage 134 connects to the bottom mixing chamber 120. For an upper-intake burner, the inlet of the primary air passage 134 is located above the cooktop panel. When the burner 200 is working, gas is injected from the nozzle into the bottom mixing chamber 120, creating a negative pressure within the bottom mixing chamber 120. This negative pressure draws in primary air through the primary air passage 134 into the bottom mixing chamber 120, where the primary air mixes with the gas in the bottom mixing chamber 120 to form a gas-air mixture. This mixture enters the inner ring mixing chamber 112, and a portion of the mixture is ejected through the inner ring flame hole 114, where it burns to form an inner ring flame. The other portion of the mixture enters the outer ring mixing chamber 116 and is ejected from the outer ring flame hole 118, where it is ignited by the ignition needle 132, where it burns to form an outer ring flame.

[0047] In some implementations, please refer to Figures 6 to 8 The gas distribution plate 104 includes an ejector tube 136, which is connected to the side of the middle part 108 facing the base 102. The ejector tube 136 is provided with an ejector channel 138, which connects to the inner ring mixing chamber 112. The middle part 108 includes a top plate 140 facing the ejector channel 138, and the inner ring flame hole 114 penetrates the top plate 140.

[0048] Therefore, the inner ring flame hole 114 is located on the top plate 140, which can improve the heating efficiency of the burner 200.

[0049] Specifically, when the burner 200 is working, the gas is injected from the nozzle into the bottom mixing chamber 120, and a negative pressure is formed in the bottom mixing chamber 120. The negative pressure draws in primary air from the primary air channel 134 into the bottom mixing chamber 120. The primary air mixes with the gas in the bottom mixing chamber 120 to form a gas mixture of gas and air. The gas mixture can enter the inner ring mixing chamber 112 through the ejector channel 138.

[0050] The mixture of gas and air is ejected from the inner ring burner hole 114 and ignited to form an inner ring flame. Since the inner ring burner hole 114 penetrates the top plate 140 and its outlet is located on the outer surface of the top plate 140, the distance between the inner ring flame formed by the inner ring burner hole 114 penetrating the top plate 140 of the middle part 108 and the cookware is closer than if the inner ring burner hole 114 were located on the circumferential side of the middle part 108. This can improve the heating efficiency of the burner 200.

[0051] In some implementations, please refer to Figure 6 and Figure 7 The outer surface of the top plate 140 of the middle part 108 includes a middle region 142 and a peripheral region 144. The peripheral region 144 connects the middle region 142 and the circumferential side of the middle part 108 along the circumferential direction P of the burner 200. The inner ring flame hole 114 penetrates the peripheral region 144. The middle region 142 is arranged in a horizontal direction. The peripheral region 144 is inclined towards the base 102 relative to the middle region 142, and the inclination angle ranges from [10°, 30°].

[0052] This facilitates the drainage of liquid that drips onto the middle part 108.

[0053] Specifically, during cooking, the pot can be placed above the burner 200 using a pot support. During cooking, the pot may spill liquid (such as broth) due to boiling. This liquid drips onto the central section 108 and slides along the sloping peripheral area 144 to the circumferential side of the central section 108, and then onto the cooktop panel. The sloping peripheral area 144 facilitates liquid drainage. The sloping angle of the peripheral area 144 relative to the central section 142 ranges from [10° to 30°], which prevents the inner ring flame from being too far from the bottom of the pot due to an excessively large sloping angle of the peripheral area 144.

[0054] The tilt angle C ranges from [10°, 30°], i.e., 10° ≤ C ≤ 30°. In some cases, C = 10°, 12°, 15°, 20°, 25°, 28°, 30° or other values ​​between [10°, 30°].

[0055] Optionally, the angle formed between the axial direction and the vertical direction of the inner ring flame hole 114 is an acute angle, and the inner ring flame hole 114 is inclined so that its outlet faces obliquely upward toward the bottom of the cookware. The inner ring flame formed after the mixed gas ejected from the inner ring flame hole 114 is ignited contacts the bottom of the cookware obliquely upward, thus creating a larger contact area between the inner ring flame and the cookware, increasing the heating area of ​​the inner ring flame, and making the cookware heated more evenly.

[0056] In some implementations, please refer to Figure 3 The gas distribution plate 104 includes a plurality of connecting parts 146, which are spaced apart along the circumferential direction P of the burner 200. The connecting parts 146 connect the middle part 108 and the outer ring part 110. In the axial direction of the burner 200, the inner ring fire hole 114 is provided corresponding to the gap 150 between two adjacent connecting parts 146.

[0057] Therefore, a certain amount of secondary air can be added to the inner ring flame hole 114, which can ensure the energy efficiency of the burner 200 to a certain extent.

[0058] Specifically, the connecting part 146 is provided with a connecting chamber 148, which connects the inner ring mixing chamber 112 and the outer ring mixing chamber 116. Part of the gas mixture of gas and air can be ejected from the inner ring burner hole 114, and another part can be transported from the inner ring mixing chamber 112 to the outer ring mixing chamber 116 through the connecting chamber 148 and ejected from the outer ring burner hole 118.

[0059] When the inner ring burner 114 is burning, it will consume the surrounding air. Therefore, it is necessary to supplement the combustion of the inner ring burner 114 with secondary air. Otherwise, it will cause incomplete combustion, high flue gas concentration and low energy efficiency when the burner 200 is burning, which does not meet the relevant requirements.

[0060] In the axial direction of the burner 200, the inner ring flame hole 114 is provided corresponding to the gap 150 between two adjacent connecting parts 146, so that secondary air can be supplied upward from the gap 150 to the vicinity of the inner ring flame hole 114, thereby supplementing the inner ring flame hole 114 with a certain amount of secondary air, reducing the flue gas concentration when the burner 200 is working to a certain extent, and ensuring the energy efficiency of the burner 200.

[0061] In some implementations, please refer to Figure 5 and Figure 10 The gas distribution plate 104 has multiple ribs 152 on the side opposite to the outer ring burner cap 106. The multiple ribs 152 are spaced apart along the circumferential direction P of the burner 200. An air channel is formed between two adjacent ribs 152. The air channel includes a primary air channel 134 and a secondary air channel 154. The primary air channel 134 and the secondary air channel 154 are alternately arranged along the circumferential direction P of the burner 200. The base 102 has a bottom mixing chamber 120. The primary air channel 134 connects to the bottom mixing chamber 120, and the secondary air channel 154 connects to the gap 150 between two adjacent connecting parts 146.

[0062] This creates a relatively regular air channel, which is conducive to the smooth flow of air.

[0063] Specifically, the primary air passage 134 connects to the bottom mixing chamber 120. After the fuel gas is injected into the bottom mixing chamber 120 from the nozzle, it will cause the air in the bottom mixing chamber 120 to flow upward and mix with the fuel gas. When the air flows upward, it will create a negative pressure in the bottom mixing chamber 120. The negative pressure can draw in primary air through the primary air passage 134 and cause the primary air to flow downward into the bottom mixing chamber 120, thereby effectively replenishing the bottom mixing chamber 120 with primary air.

[0064] Two adjacent ribs 152 form a primary air channel 134, which allows primary air to be quickly replenished into the bottom mixing chamber 120 along the primary air channel 134, thus avoiding interference between primary air and secondary air and increasing flow resistance.

[0065] The secondary air passage 154 connects the gap 150 between two adjacent connecting parts 146. When the inner ring burner 114 is burning, secondary air can flow into the gap from the secondary air passage 154 and flow upward from the gap to the vicinity of the inner ring burner 114, replenishing the inner ring burner 114 with secondary air. Two adjacent ribs 152 form the secondary air passage 154, allowing secondary air to quickly replenish the vicinity of the inner ring burner 114 along the secondary air passage 154, avoiding interference between the secondary air and the primary air and thus preventing increased flow resistance.

[0066] The primary air passage 134 and the secondary air passage 154 are alternately arranged along the circumferential direction P of the burner 200, so that the bottom mixing chamber 120 and the inner ring flame hole 114 can respectively replenish primary air and secondary air in the circumferential direction P of the burner 200, thereby improving the replenishment efficiency of primary air and secondary air.

[0067] In some implementations, please refer to Figure 5 and Figure 10 In the two protruding ribs 152 that form an air channel, each protruding rib 152 has an arc-shaped protrusion 156 on the surface of the air channel facing the air channel in the area near the air inlet.

[0068] Therefore, the arc-shaped protrusion 156 can reduce airflow resistance.

[0069] Specifically, in one implementation, please refer to... Figure 9 and Figure 10 The air distribution plate 104 includes a first part 158 ​​and a second part 160, which are fixedly connected by fasteners 162 (such as screws). More specifically, the first part 158 ​​has a second chamber 128, the bottom of which has a first mounting hole 164, and the second part 160 has a second mounting hole 166. The fasteners 162 pass through the first mounting hole 164 and the second mounting hole 166 and fix the first part 158 ​​and the second part 160 together.

[0070] In order to ensure the connection strength of the first part 158 ​​and the second part 160 to a certain extent, each rib 152 has an arc-shaped protrusion 156 on the surface facing the air channel in the area near the air channel inlet. The second mounting hole 166 can extend to the arc-shaped protrusion 156. The second mounting hole 166 can be formed as a blind hole, so that the fastener 162 can form a longer connection part 146 with the second part 160.

[0071] In the embodiment shown in the figure, the arc-shaped protrusion 156 is formed on the surface of the rib 152 facing the primary air passage 134 in the region near the air inlet of the primary air passage 134. Since the arc-shaped protrusion 156 is located on the surface of the rib 152 facing the primary air passage 134, when the burner 200 is working, primary air enters the bottom mixing chamber 120 from the primary air passage 134. When the primary air flows through the arc-shaped protrusion 156, it can flow along the arc-shaped surface of the arc-shaped protrusion 156, thereby reducing the flow resistance of the primary air.

[0072] In other embodiments, the arc-shaped protrusion 156 is formed on the surface of the rib 152 facing the secondary air passage 154 in the region near the air inlet of the secondary air passage 154. Since the arc-shaped protrusion 156 is located on the surface of the rib 152 facing the secondary air passage 154, when the burner 200 is operating, secondary air enters from the secondary air passage 154 into the gap 150 between two adjacent connecting parts 146. When the secondary air flows through the arc-shaped protrusion 156, it can flow along the arc-shaped surface of the arc-shaped protrusion 156, thereby reducing the flow resistance of the secondary air.

[0073] In some implementations, please refer to Figure 5 and Figure 8 The gas distribution plate 104 has a guide mounting structure 168 on the surface facing the base 102. The base 102 has a bottom mixing chamber 120. The guide mounting structure 168 includes a plurality of guide blocks 170. The plurality of guide blocks 170 are spaced apart along the circumferential direction P of the burner 200 and are in contact or clearance fit with the surface of the base 102 facing the bottom mixing chamber 120.

[0074] This facilitates the assembly of the air distribution plate 104 and the base 102.

[0075] Specifically, the top opening of the bottom mixing chamber 120 allows the air distribution plate 104 to be installed onto the base 102 from top to bottom. During the installation of the air distribution plate 104, the guide installation structure 168 can adjust the position of the air distribution plate 104 and / or the base 102 by cooperating with the side wall of the bottom mixing chamber 120 through multiple guide blocks 170, thereby facilitating the assembly of the air distribution plate 104 and the base 102.

[0076] Multiple guide blocks 170 are spaced apart along the circumferential direction P of the burner 200, which facilitates the adjustment of the position of the gas distribution plate 104 and / or the base 102 by the guide mounting structure 168 along the circumferential direction P of the burner 200.

[0077] Optionally, in one embodiment, the guide block 170 contacts the surface of the base 102 facing the bottom mixing chamber 120, and the air distribution plate 104 is tightly assembled with the base 102. Optionally, in one embodiment, the guide block 170 and the surface of the base 102 facing the bottom mixing chamber 120 are clearance-fitted, and the assembly of the air distribution plate 104 and the base 102 is more efficient.

[0078] In some implementations, please refer to Figure 8 The guide block 170 includes a bottom surface 172, a side surface 174 and an inclined surface 176. The inclined surface 176 is inclined from the side surface 174 toward the central axis L of the burner 200 and connects to the bottom surface 172.

[0079] Therefore, the position of the air distribution plate 104 and / or the base 102 can be adjusted by using the inclined plane 176.

[0080] Specifically, in Figure 8 In the middle, the inclined surface 176 slopes downward from the side surface 174 along the direction close to the central axis L of the burner 200 and connects to the bottom surface 172. The bottom surface 172 is closer to the central axis L of the burner 200 than the side surface 174. During the assembly of the gas distribution plate 104 to the base 102, the gas distribution plate 104 is installed into the base 102 from top to bottom. When there is a correctable deviation in the alignment between the gas distribution plate 104 and the base 102, the inclined surface 176 of the guide block 170 contacts the periphery of the opening of the bottom mixing chamber 120, so that the gas distribution plate 104 can adaptively adjust its position along the direction close to the central axis L of the burner 200, thereby allowing the guide block 170 to be smoothly inserted into the bottom mixing chamber 120, and the gas distribution plate 104 can be correctly assembled on the base 102.

[0081] In some implementations, please refer to Figures 1 to 3 The outer ring flame hole 118 is provided on the circumferential side of the outer ring flame cover 106. A guide space 178 is provided at the connection between the circumferential side of the outer ring flame cover 106 and the top surface. The guide space 178 is configured to guide the secondary air above the outer ring flame cover 106 to the circumferential side of the outer ring flame cover 106.

[0082] This reduces the amount of flue gas produced during combustion in the burner 200 to a certain extent and improves the energy efficiency of the burner 200.

[0083] Specifically, the mixture of gas and air enters the outer ring mixing chamber 116 from the inner ring mixing chamber 112 via the connecting chamber 148, and is ejected from the outer ring flame hole 118. It is then ignited by the ignition needle 132, and combustion forms an outer ring flame.

[0084] The guide space 178, located at the connection between the circumferential side and the top surface of the outer ring burner cap 106, directs the secondary air above the outer ring burner cap 106 to the circumferential side of the outer ring burner cap 106. When the outer ring burner holes 118 burn and consume the air near the circumferential side of the outer ring burner cap 106, the guide space 178 can direct the secondary air above the outer ring burner cap 106 to the circumferential side of the outer ring burner cap 106, timely replenishing the secondary air for the combustion of the outer ring burner holes 118. This results in more complete combustion of the outer ring burner, increases the combustion rate of the gas mixture, reduces or even eliminates yellow flame, reduces the flue gas produced during combustion of the burner 200, and improves the energy efficiency of the burner 200, while also reducing costs and increasing efficiency. The burner 200 has low flue gas concentration and high energy efficiency during combustion, which meets relevant requirements.

[0085] Optionally, in Figure 3In this embodiment, the flow guiding space 178 is in the form of a groove, which is inclined (excluding vertical) to connect the circumferential side surface and the top surface of the outer ring flame cap 106. Alternatively, in other embodiments, the flow guiding space 178 may be in the form of a through hole.

[0086] Optionally, multiple flow guiding spaces 178 are provided at the connection between the circumferential side surface and the top surface of the outer ring burner cap 106. The multiple flow guiding spaces 178 are arranged at intervals along the circumferential direction P of the burner 200, and multiple outer ring flame holes 118 are provided on the circumferential side surface of the outer ring burner cap 106 along the circumferential direction P of the burner 200. As a result, the secondary air supply to the outer ring flame holes 118 is sufficient.

[0087] One embodiment of the present invention includes a burner 200 according to any of the above embodiments.

[0088] In the above-mentioned stove, the middle part 108 of the gas distribution plate 104 is provided with an inner ring mixing chamber 112 and an inner ring flame hole 114, which can save the inner ring flame cover, reduce the material usage of the burner 200, and achieve the purpose of cost reduction and efficiency improvement.

[0089] Specifically, the cooktop also includes a control panel and a pot support. The control panel has an opening, and the pot support is mounted on the control panel and arranged around the opening. The burner 200 extends above the control panel through the opening, and the pot support is arranged around the burner 200 to stably place the pot above the burner 200. The cooktop includes, but is not limited to, gas stoves, integrated cooktops, ovens, etc.

[0090] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0091] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A burner, characterized in that, include: Base; The gas distribution plate is disposed on the base. The gas distribution plate includes a middle part and an outer ring part. The middle part is connected to the outer ring part. The outer ring part is arranged around the middle part. The middle part is provided with an inner ring mixing chamber and an inner ring flame hole. The inner ring flame hole is connected to the inner ring mixing chamber. An outer ring flame cap is disposed on the outer ring portion, and the outer ring flame cap and the outer ring portion form an outer ring mixing chamber. The outer ring flame cap is provided with an outer ring flame hole, which communicates with the outer ring mixing chamber.

2. The burner according to claim 1, characterized in that, The gas distribution plate includes an ejector tube connected to the middle part on the side facing the base. The ejector tube has an ejector channel that communicates with the inner ring mixing chamber. The middle part includes a top plate facing the ejector channel, and the inner ring flame hole penetrates the top plate.

3. The burner according to claim 2, characterized in that, The outer surface of the top plate of the middle part includes a middle area and a peripheral area. The peripheral area connects the middle area and the circumferential side of the middle part along the circumferential direction of the burner. The inner ring flame hole penetrates the peripheral area. The middle area is arranged in a horizontal direction. The peripheral area is inclined towards the base relative to the middle area, and the inclination angle ranges from [10°, 30°].

4. The burner according to claim 1, characterized in that, The gas distribution plate includes multiple connecting parts, which are spaced apart along the circumferential direction of the burner. The connecting parts connect the middle part and the outer ring part. In the axial direction of the burner, the inner ring fire hole is set to correspond to the gap between two adjacent connecting parts.

5. The burner according to claim 4, characterized in that, The gas distribution plate has multiple raised ribs on the side opposite to the outer ring burner cap. The multiple raised ribs are spaced apart along the circumferential direction of the burner, and an air channel is formed between two adjacent raised ribs. The air channel includes a primary air channel and a secondary air channel, which are alternately arranged along the circumferential direction of the burner. The base has a bottom mixing chamber. The primary air channel connects to the bottom mixing chamber, and the secondary air channel connects to the gap between two adjacent connecting parts.

6. The burner according to claim 5, characterized in that, In the two ribs that form an air channel, each rib has an arc-shaped protrusion on its surface facing the air channel in the region near the air inlet of the air channel.

7. The burner according to claim 1, characterized in that, The gas distribution plate has a guide mounting structure on its surface facing the base. The base has a bottom mixing chamber. The guide mounting structure includes multiple guide blocks. The multiple guide blocks are spaced apart along the circumferential direction of the burner and are in contact or clearance fit with the surface of the base facing the bottom mixing chamber.

8. The burner according to claim 7, characterized in that, The guide block includes a bottom surface, a side surface, and an inclined surface, with the inclined surface connecting to the bottom surface at an angle from the side surface toward the central axis of the burner.

9. The burner according to any one of claims 1-8, characterized in that, The outer ring flame hole is located on the circumferential side of the outer ring flame cover. A flow guiding space is provided at the connection between the circumferential side of the outer ring flame cover and the top surface. The flow guiding space is configured to guide the secondary air above the outer ring flame cover to the circumferential side of the outer ring flame cover.

10. A stove, characterized in that, Includes the burner according to any one of claims 1-9.

Images