Combustor

Abstract

The combustor comprises a gas distribution disc and an outer ring fire cover, a gas mixing cavity is formed in the gas distribution disc, and the gas mixing cavity is used for allowing gas to enter; the outer ring fire cover is arranged on the gas distribution disc, an outer ring fire channel is formed between the outer ring fire cover and the gas distribution disc, and the outer ring fire channel communicates with the gas mixing cavity; a plurality of bosses are arranged on the outer wall, corresponding to the outer ring fire cover, of the gas distribution disc in the circumferential direction at intervals, and the bosses are used for abutting against the outer ring fire cover. The outer ring fire channel is separated at the boss so that outer ring fire formed at an outlet of the outer ring fire channel can be interrupted at the boss, the outer ring fire cover is provided with a fire transferring channel corresponding to the boss, and the outer ring fire located on the two sides of the boss penetrates through the fire transferring channel to be connected. The boss is arranged to interrupt the outer ring fire formed by the outer ring fire channel so as to form the anti-burning area, the diffusion range of flames is effectively limited, the risk that the flames directly burn damageable parts such as furnace lugs in burning parts is reduced, and therefore the service life of burning equipment is prolonged.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of gas stoves, and particularly relates to a burner. BACKGROUND

[0002] In the prior art, a burner cover and an annular fire cover are arranged on a burner base to form a gas mixing cavity and an annular fire hole channel, and a flame formed in the annular fire hole channel is easy to directly burn components on the burner, such as a burner ear, so that the burning components are prone to damage, thereby reducing the service life of the burning components. CONTENT OF THE UTILITY MODEL

[0003] The application provides a burner, and solves the technical problem of how to form a burn-preventing area at a position of an annular fire hole channel.

[0004] To solve the above technical problem, one technical scheme of the application is as follows: a burner, comprising a gas distribution disc and an outer ring fire cover, a gas mixing cavity is formed in the gas distribution disc, and the gas mixing cavity is used for supplying fuel gas; the outer ring fire cover is arranged on the gas distribution disc, and an outer ring fire channel is formed between the outer ring fire cover and the gas distribution disc, and the outer ring fire channel is communicated with the gas mixing cavity; wherein a plurality of bosses are arranged on the outer wall of the gas distribution disc in a circumferential direction corresponding to the outer ring fire cover, and the bosses are used for abutting against the outer ring fire cover; the outer ring fire channel is interrupted at the bosses, so that the outer ring fire formed at the outlet of the outer ring fire channel is interrupted at the bosses; the outer ring fire cover is provided with a fire transmission channel corresponding to the bosses, and the outer ring fires located on both sides of the bosses are connected through the fire transmission channel.

[0005] According to an embodiment of the application, the fire transmission channel is arranged in the thickness direction of the outer ring fire cover, and the fire transmission channel is extended from one side of the boss close to the inlet of the outer ring fire channel to the edge of the outer ring fire cover located at the outlet of the outer ring fire channel.

[0006] According to an embodiment of the application, each fire transmission channel comprises a plurality of fire transmission grooves, and the plurality of fire transmission grooves are arranged in a circumferential direction.

[0007] According to an embodiment of the application, the gas mixing cavity comprises a first mixing cavity and a second mixing cavity, and the first mixing cavity is communicated with the outer ring fire channel; the gas distribution disc is further provided with a center fire cover arranged on the gas distribution disc, and a center ring fire channel is formed between the center fire cover and the gas distribution disc, and the center ring fire channel is communicated with the second mixing cavity.

[0008] According to an embodiment of the present application, the gas distribution plate comprises an outer base, a plate upper cover and a center base, the plate upper cover is arranged on the outer base, and the plate upper cover and the outer base form the first mixing cavity; the outer ring fire cover is arranged on the outer base and forms the outer ring fire channel with the plate upper cover; the center base is located inside the outer base, and a middle portion of the center base forms the second mixing cavity; the center fire cover is arranged inside the center base, and an outer peripheral wall of the center fire cover is spaced apart from an inner peripheral wall of the center base to form the center ring fire channel.

[0009] According to an embodiment of the present application, the center base comprises a support sleeve and an extension portion, the support sleeve is arranged in a hollow manner, and a middle portion of the support sleeve forms the second mixing cavity; an inner peripheral wall of the support sleeve is provided with a plurality of support blocks in a circumferential direction, and air passage channels are formed between adjacent support blocks; the extension portion is connected to a top portion of the support sleeve, and a middle portion of the extension portion forms a hollow cavity which is expanded outward from the second mixing cavity; wherein a bottom portion of the center fire cover is abutted against the support blocks, and an outer peripheral wall of the center fire cover is spaced apart from a hollow cavity wall of the extension portion to form the center ring fire channel, and the center ring fire channel is communicated with the second mixing cavity through the air passage channels.

[0010] According to an embodiment of the present application, the center fire cover comprises a ring cover plate and a fire cover bottom plate, and an outer peripheral wall of the ring cover plate is spaced apart from the hollow cavity wall of the extension portion to form the center ring fire channel; the fire cover bottom plate is connected to a bottom portion of the ring cover plate, a peripheral wall of the fire cover bottom plate and a bottom wall of the ring cover plate form a ring lapping groove, and the ring lapping groove is abutted against a top portion of the support block.

[0011] According to an embodiment of the present application, the outer base comprises a base bottom plate, a base outer ring plate and a base inner ring plate, the base outer ring plate is arranged on the base bottom plate, and the plate upper cover is abutted against the base outer ring plate; the base inner ring plate is arranged on the base bottom plate and located inside the base outer ring plate, and the outer ring fire cover is abutted against the base inner ring plate.

[0012] According to an embodiment of the present application, the base bottom plate is provided with a first lapping portion, the plate upper cover is provided with a second lapping portion, one of the first lapping portion and the second lapping portion comprises a first lapping protrusion, and the other comprises a first lapping groove for receiving the first lapping protrusion; the base bottom plate is further provided with a third lapping portion which is spaced apart from the first lapping portion, the outer ring fire cover is provided with a fourth lapping portion, one of the third lapping portion and the fourth lapping portion comprises a third lapping protrusion, and the other comprises a second lapping groove for receiving the third lapping protrusion.

[0013] According to an embodiment of the present application, the gas distribution disc further comprises at least one connecting block connecting the center base and the outer base.

[0014] The present application has the following advantages: the outer ring fire formed by the outer ring fire passage interrupted by the boss is interrupted to form a burn-proof area, which effectively limits the spread of the flame and reduces the risk of the flame directly burning into the vulnerable components such as the furnace ear, thereby prolonging the service life of the combustion equipment. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0016] Figure 1 is a perspective view of an embodiment of the burner of the present application;

[0017] Figure 2 is a cross-sectional view of the present application along the section line A-A; Figure 1

[0018] Figure 3 is a bottom view of an embodiment of the burner of the present application;

[0019] Figure 4 is an exploded view of an embodiment of the burner of the present application;

[0020] Figure 5 is an exploded view of the outer ring fire cover and the fire plate of the present application. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that only the parts related to the present application are shown in the drawings, not all the structures. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0022] ​Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in one embodiment” in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all referring to a common embodiment, or an embodiment that is independent of other embodiments. One of ordinary skill in the art will readily recognize from the disclosure herein, that embodiments of the present application can be combined with embodiments of the other applications.

[0023] In the description of the application, the terms“first”,“second”, etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an indicated number of technical features. Thus, features defined with“first”,“second” can explicitly or implicitly include one or more features. In the description of the application, the meaning of“a plurality” is two or more, unless otherwise explicitly and specifically limited.

[0024] Please refer to Figure 1 , Figure 2 and Figure 3 , an embodiment of the application provides a burner 100, comprising a gas distribution disc 10 and an outer ring flame cover 20. Wherein, the outer ring flame cover 20 is arranged on the gas distribution disc 10, the gas distribution disc 10 is used for uniformly distributing the entering gas into the outer ring flame cover 20, so as to improve the combustion efficiency and thermal efficiency of the burner 100, and make the distribution of the gas more uniform in the combustion process.

[0025] Specifically, a gas mixing cavity 11 (see Figure 3 ) is formed in the gas distribution disc 10, and the gas mixing cavity 11 is used for gas to pass in.

[0026] Wherein, the gas distribution disc 10 can be communicated with an external ejector pipe (not shown in the figure), the function of the ejector pipe is to suck air (or other gas) from the outside, and mix it with the gas by a certain speed and pressure, enhance the mixing effect of the gas and other gas, and then improve the combustion performance. The gas mixing cavity 11 can be used to accept the mixed gas introduced from the ejector pipe, and can further promote the full mixing of the gas and other gas, so as to improve the combustion efficiency and reduce the emission of harmful gas produced by incomplete combustion, and lay a good foundation for the subsequent combustion process.

[0027] The outer ring flame cover 20 is arranged on the gas distribution disc 10, and the outer ring flame cover 20 and the gas distribution disc 10 form an outer ring flame passage 30, and the outer ring flame passage 30 is communicated with the gas mixing cavity 11.

[0028] In an embodiment, the gas distribution disc 10 is provided with a pressure equalizing gap 12 around the outer ring flame cover 20, and the gas in the gas mixing cavity 11 enters the outer ring flame passage 30 after pressure equalization through the pressure equalizing gap 12.

[0029] The outer ring fire channel 30 realizes the diffusion and stability of the combustion flame, and also takes into account the uniformity of heat distribution. The pressure equalization gap 12 on the gas distribution disc 10 enables the gas premixed in the gas mixing chamber 11 to pass through the pressure equalization gap 12 into the outer ring fire channel 30 uniformly and stably, thereby reducing the pressure unevenness of the gas in the flow process, and further improving the safety and stability of the burner 100.

[0030] In an embodiment, the upper end of the outer ring fire channel 30 is a whole-circle outer annular fire hole 31. The gas in the gas mixing chamber 11 enters the outer ring fire channel 30 after sufficient mixing and pressure distribution through the pressure equalization gap 12, and is then burned out of the outer annular fire hole 31 of the outer ring fire channel 30, and the flame of the combustion is usually in the form of an upward annular thin flame.

[0031] Please refer to Figure 2 In an embodiment, the width of the pressure equalization gap 12 ranges from 2 to 6 mm.

[0032] In the present embodiment, the width of the pressure equalization gap 12 refers to the width in the vertical direction. Specifically, the width of the pressure equalization gap 12 is 2 mm, 3.5 mm, 5 mm, or 6 mm, etc.

[0033] Please refer to Figure 2 , Figure 3 and Figure 4 In an embodiment, the gas mixing chamber 11 includes a first mixing chamber 111, the gas distribution disc 10 includes an outer base 13 and a disc upper cover 14, the disc upper cover 14 is arranged on the outer base 13, the disc upper cover 14 and the outer base 13 together form the first mixing chamber 111, and the disc upper cover 14 and the outer base 13 are spaced apart to form the pressure equalization gap 12. The outer ring fire cover 20 is arranged on the outer base 13 and forms the outer ring fire channel 30 that communicates with the first mixing chamber 111 with the disc upper cover 14. Through the above arrangement, the disc upper cover 14 and the outer base 13 cooperate to form the first mixing chamber 111, so as to leave enough space to accommodate the mixing process of the gas and air. At the same time, the disc upper cover 14 and the outer base 13 are kept at a certain distance to form the pressure equalization gap 12, which can ensure that the gas in the first mixing chamber 111 is pressure balanced before entering the outer ring fire channel 30, so as to ensure that the subsequent gas can be uniformly distributed into the outer ring fire channel 30. The outer ring fire cover 20 and the disc upper cover 14 form the outer ring fire channel 30, which can guide the mixed gas to flow along a specific path to the burner 100, and ensure that the flame can be uniformly distributed at the outer annular fire hole 31, thereby improving the heating efficiency.

[0034] The bottom of the outer base 13 is provided with a first air inlet 131 communicating with the first mixing cavity 111, and the first air inlet 131 is used to connect an ejector pipe, so that the mixed gas introduced from the ejector pipe can enter the first mixing cavity 111 through the first air inlet 131.

[0035] In an embodiment, the outer base 13 and the disc upper cover 14 are in a split structure. In other embodiments, the outer base 13 and the disc upper cover 14 can also be in an integrally formed structure, which is not limited here.

[0036] Please refer to Figure 2 and Figure 4 In an embodiment, the disc upper cover 14 includes a first upper cover support plate 141, a second upper cover support plate 142, and an upper cover top plate 143. One end of the first upper cover support plate 141 is arranged on the outer base 13, and the other end extends away from the outer base 13. The second upper cover support plate 142 is located on the inner side of the first upper cover support plate 141, and one end of the second upper cover support plate 142 is arranged in a spaced manner with the outer base 13 to form the pressure equalizing gap 12, and the other end extends away from the outer base 13. The upper cover top plate 143 is connected to the end of the first upper cover support plate 141 and the second upper cover support plate 142 away from the outer base 13. In the above arrangement, the extension of the first upper cover support plate 141 and the second upper cover support plate 142 outward helps to expand the volume of the gas mixing cavity 11, so that the gas and other gases can be mixed more fully in the gas mixing cavity 11. The upper cover top plate 143 can cooperate with the first upper cover support plate 141 and the second upper cover support plate 142 to close the gas mixing cavity 11, reduce the risk of gas leakage, and thus ensure that the gas and other gases will not be disturbed during the mixing process.

[0037] In the present embodiment, the first upper cover support plate 141 and the second upper cover support plate 142 both extend in a vertical direction away from the outer base 13.

[0038] In other embodiments, the first upper cover support plate 141 and the second upper cover support plate 142 can also both extend in an inclined direction away from the outer base 13, or one of the first upper cover support plate 141 and the second upper cover support plate 142 extends in a vertical direction, and the other extends in an inclined direction, which is not limited here.

[0039] Please refer to Figure 2 and Figure 4In an embodiment, the second upper cover support plate 142 is provided with a plurality of through holes 1421 arranged circumferentially at intervals, and the through holes 1421 are communicated with the first mixing cavity 111 and the outer annular flame passage 30. The above arrangement enables the gas in the first mixing cavity 111 to enter the outer annular flame passage 30 through the through holes 1421, and the plurality of circumferentially arranged through holes 1421 also enables the gas in the first mixing cavity 111 to be distributed through the plurality of through holes 1421 before entering the outer annular flame passage 30, thereby ensuring that the gas is uniformly distributed when entering the outer annular flame passage 30, and further improving the combustion efficiency and the stability of the flame.

[0040] Specifically, the number of the through holes 1421, the hole diameter of the through holes 1421, and the length of the through holes 1421 in the circumferential direction can be reasonably arranged according to the size of the burner 100 and the gas flow demand, to ensure that the gas has sufficient ventilation area.

[0041] In an embodiment, the through holes 1421 can be circular, square or other shapes, which are not limited herein.

[0042] In an embodiment, the gas distribution disc 10 is not provided with the pressure equalizing gap 12, and only the plurality of through holes 1421 arranged circumferentially at intervals are provided on the second upper cover support plate 142, and the plurality of through holes 1421 can also enable the gas in the first mixing cavity 111 to be uniformly distributed before entering the outer annular flame passage 30.

[0043] Please continue to refer to Figure 2 and Figure 4 In an embodiment, the outer annular flame cover 20 is located inside the disc body upper cover 14, and the outer annular flame cover 20 comprises a flame cover support plate 21 and a flame cover extension plate 22. The flame cover support plate 21 is arranged on the outer base 13. The flame cover extension plate 22 is connected to the flame cover support plate 21 and extends obliquely towards the upper cover top plate 143, and the flame cover extension plate 22 is arranged opposite to and spaced apart from the upper cover top plate 143 at least in part, to form the outer annular flame passage 30. Through the above arrangement, the flame cover support plate 21 is used to fix and support the flame cover extension plate 22, and the obliquely arranged flame cover extension plate 22 not only helps to guide the gas flow in the outer annular flame passage 30 to the outer annular flame hole 31, but also effectively adjusts the direction and intensity of the flame according to the oblique angle of the flame cover extension plate 22, so that the flame is more uniform and close to the outer annular flame hole 31, thereby improving the heating efficiency.

[0044] Please refer to Figure 2 , Figure 4 and Figure 5In an embodiment, the upper cover top plate 143 is in a conical structure in cross section, and the upper cover top plate 143 is provided with a plurality of bosses 15 arranged in a circumferential direction on a side of the upper cover top plate 143 extending towards the fire cover extension plate 22, and the bosses 15 are configured to abut against the fire cover extension plate 22. The upper cover top plate 143 in a conical structure can form the first mixing cavity 111 with the first upper cover support plate 141, the second upper cover support plate 142 and the outer base 13, so as to effectively guide the gas and other gas to mix sufficiently in the first mixing cavity 111. The bosses 15 abut against the fire cover extension plate 22, and can limit the shaking of the outer ring fire cover 20 to some extent, and enhance the stability of the whole structure. At the same time, the bosses 15 can also ensure that the fire cover extension plate 22 and the upper cover top plate 143 maintain a proper spacing, so as to maintain the unobstructed passage of the outer ring fire passage 30, and further improve the combustion efficiency.

[0045] In the embodiment, the number of the bosses 15 is four, and the bosses 15 are uniformly arranged on the side wall of the fire cover extension plate 22, so that the fire cover extension plate 22 is uniformly stressed, and the risk of the outer ring fire cover 20 being deviated or deformed during use is reduced, thereby improving the stability of the outer ring fire cover 20 arranged inside the disc upper cover 14. It can be understood that the size, position and number of the bosses 15 can be arranged according to the shape and size of the outer ring fire cover 20 and the disc upper cover 14, and are not limited herein.

[0046] Please continue to refer to Figure 2 , Figure 4 and Figure 5 In an embodiment, a plurality of bosses 15 are arranged in a circumferential direction on the outer wall of the gas distribution disc 10 corresponding to the outer ring fire cover 20, and the bosses 15 are configured to abut against the outer ring fire cover 20. The outer ring fire passage 30 is interrupted at the bosses 15, so that the outer ring fire formed by the outer ring fire hole 31 of the outer ring fire passage 30 is interrupted at the bosses 15, and the outer ring fire cover 20 is provided with a fire transmission passage 23 corresponding to the bosses 15, and the outer ring fire on both sides of the bosses 15 is connected through the fire transmission passage 23. Through the above arrangement, the outer ring fire formed by the outer ring fire hole 31 of the outer ring fire passage 30 is interrupted at the bosses 15 to form a burn-proof area, effectively limiting the spread of the flame, reducing the risk of the flame directly burning into the combustible components such as the furnace ear and other vulnerable components, thereby prolonging the service life of the combustion equipment. At the same time, the flame continues to burn on both sides of the bosses 15, and the flame is connected through the fire transmission passage 23 corresponding to the bosses 15 on the outer ring fire cover 20, thereby improving the product reliability of the burner 100.

[0047] Please continue to refer to Figure 2 , Figure 4 and Figure 5In an embodiment, the fire transfer channel 23 is arranged through the thickness direction of the outer ring fire cover 20, and the fire transfer channel 23 is arranged from the side of the boss 15 close to the entrance of the outer ring fire channel 30 to the edge of the outer ring fire cover 20 at the exit of the outer ring fire channel 30. Through the above arrangement, the flame can be transferred from one side of the boss 15 to the other side along a relatively direct and efficient path, i.e., the flame can directly pass through the outer ring fire cover 20 to connect, thereby reducing energy loss and reducing the risk of unstable flame shape.

[0048] Specifically, the entrance of the fire transfer channel 23 is located at the side of the boss 15 close to the outer ring fire channel 30, which enables the flame to accurately enter the outer ring fire channel 30, reducing the risk of excessive diffusion or extinguishing of the flame at the edge of the boss 15. The exit of the fire transfer channel 23 is located at the edge of the outer ring fire channel 30 at the exit, which enables the flame to seamlessly re-integrate into the outer ring fire hole 31 of the outer ring fire channel 30, maintaining the continuity and stability of the flame.

[0049] It can be understood that in the size of the fire transfer channel 23, it is necessary to allow the flame to pass smoothly while limiting excessive gas leakage and unstable diffusion of the flame.

[0050] In an embodiment, the fire transfer channel 23 is a hole structure, i.e., the fire transfer channel 23 is not arranged to the edge of the outer ring fire cover 20 at the exit of the outer ring fire channel 30. At this time, it is only necessary to ensure that the length of the fire transfer channel 23 in the extension direction of the outer ring fire channel 30 is greater than the length of the boss 15 in the extension direction of the outer ring fire channel 30, which can also meet the connection of the outer ring fire on both sides of the boss 15 through the fire transfer channel 23.

[0051] Please refer to Figure 5 In an embodiment, the width of the boss 15 in the circumferential direction is greater than or equal to the width of the fire transfer channel 23 in the circumferential direction. The above arrangement enables the boss 15 to effectively support and guide the flame into the fire transfer channel 23, reducing the risk of fluctuation and extinguishing of the flame at the edge of the boss 15.

[0052] Please continue to refer to Figure 5 In an embodiment, each fire transfer channel 23 includes a plurality of fire transfer grooves 231, and the plurality of fire transfer grooves 231 are arranged in a circumferential direction. Through the above arrangement, the flame can pass through multiple parallel fire transfer grooves 231 when passing through the fire transfer channel 23. This multi-path flame transfer mode can further improve the continuity and stability of flame transfer, even if some fire transfer grooves 231 are blocked or the flame is extinguished, the flame can still continue to transfer through other fire transfer grooves 231.

[0053] Please refer again to Figure 2 and Figure 4In an embodiment, the outer base 13 comprises a base bottom plate 132, a base outer ring plate 133 and a base inner ring plate 134, and the disc upper cover 14 is spaced apart from the base bottom plate 132 to form the pressure equalizing gap 12. The base outer ring plate 133 is arranged on the base bottom plate 132, and the disc upper cover 14 is overlapped on the base outer ring plate 133. The base inner ring plate 134 is arranged on the base bottom plate 132 and located inside the base outer ring plate 133, and the outer ring fire cover 20 is overlapped on the base inner ring plate 134. Through the above arrangement, the base outer ring plate 133 provides support for the disc upper cover 14, and the base inner ring plate 134 provides support for the outer ring fire cover 20, so that the disc upper cover 14 and the outer ring fire cover 20 can be overlapped on the outer base 13 to provide stable support for the disc upper cover 14 and the outer ring fire cover 20, and also improve the convenience of installing the disc upper cover 14 and the outer ring fire cover 20 on the outer base 13.

[0054] Please refer to Figure 1 and Figure 2 In an embodiment, the base outer ring plate 133 is provided with a first overlapping portion 1331 at an end away from the base bottom plate 132, and the first upper cover support plate 141 is provided with a second overlapping portion 1411 at an end away from the upper cover top plate 143, one of the first overlapping portion 1331 and the second overlapping portion 1411 comprises a first overlapping protrusion, and the other comprises a first overlapping groove for receiving the first overlapping protrusion. Through the combination of the first overlapping protrusion and the first overlapping groove, not only the reliable connection between the base outer ring plate 133 and the first upper cover support plate 141 is realized, but also the structural strength and stability of the entire burner 100 are enhanced.

[0055] It can be understood that the first overlapping protrusion usually has a certain size and shape, such as rectangular, circular or trapezoidal, and the shape, size and position of the corresponding first overlapping groove are matched with the first overlapping protrusion to ensure that the two can be accurately docked.

[0056] Specifically, when the first overlapping protrusion is arranged on the base outer ring plate 133 as the first overlapping portion 1331, the first overlapping groove is arranged on the first upper cover support plate 141 as the second overlapping portion 1411. Conversely, when the first overlapping protrusion is arranged on the first upper cover support plate 141 as the second overlapping portion 1411, the first overlapping groove is arranged on the base outer ring plate 133 as the first overlapping portion 1331.

[0057] In the present embodiment, the first overlapping protrusion is arranged on the base outer ring plate 133 as the first overlapping portion 1331, and the first overlapping groove is arranged on the first upper cover support plate 141 as the second overlapping portion 1411. At this time, the first overlapping groove is formed between the side wall of the first upper cover support plate 141 away from the second upper cover support plate 142 and the bottom wall of the first upper cover support plate 141, and the first overlapping protrusion is abutted against the groove wall of the first overlapping groove of the fire cover support plate 21.

[0058] It can be understood that the first lap joint groove can also be formed only on the bottom wall of the first upper cover support plate 141, so that the first lap joint groove is formed with a first opening facing the base outer ring plate 133, and at this time the first lap joint protrusion on the base outer ring plate 133 can directly extend into the first lap joint groove through the first opening, thereby achieving the lap joint between the outer base 13 and the disc body upper cover 14, and improving the assembly efficiency.

[0059] Please continue to refer to Figure 1 and Figure 2 In an embodiment, one end of the base inner ring plate 134 away from the base bottom plate 132 is provided with a third lap joint part 1341, and one end of the fire cover support plate 21 away from the fire cover extension plate 22 is provided with a fourth lap joint part 211, one of the third lap joint part 1341 and the fourth lap joint part 211 comprises a third lap joint protrusion, and the other comprises a second lap joint groove for receiving the third lap joint protrusion. Through the combination of the second lap joint protrusion and the second lap joint groove, not only the reliable connection between the base inner ring plate 134 and the fire cover support plate 21 is achieved, but also the structural strength and stability of the entire burner 100 are enhanced.

[0060] It can be understood that the second lap joint protrusion usually has a certain size and shape, such as rectangular, circular or trapezoidal, and the shape, size and position of the corresponding second lap joint groove are matched with the second lap joint protrusion, so as to ensure that the two can be accurately docked.

[0061] Specifically, when the second lap joint protrusion is arranged on the base inner ring plate 134 as the third lap joint part 1341, the second lap joint groove is arranged on the fire cover support plate 21 as the fourth lap joint part 211. Conversely, when the second lap joint protrusion is arranged on the fire cover support plate 21 as the fourth lap joint part 211, the second lap joint groove is arranged on the base inner ring plate 134 as the third lap joint part 1341.

[0062] In the present embodiment, the second lap joint protrusion is arranged on the base inner ring plate 134 as the third lap joint part 1341, and the second lap joint groove is arranged on the fire cover support plate 21 as the fourth lap joint part 211. At this time, the second lap joint groove is formed between the side wall of the fire cover support plate 21 away from the fire cover support plate 21 and the bottom wall of the fire cover support plate 21, and the second lap joint protrusion abuts against the groove wall of the second lap joint groove of the fire cover support plate 21.

[0063] It can be understood that the second lap joint groove can also be formed only on the bottom wall of the fire cover support plate 21, so that the second lap joint groove is formed with a second opening facing the base inner ring plate 134, and at this time the second lap joint protrusion on the base inner ring plate 134 can directly extend into the second lap joint groove through the second opening, thereby achieving the lap joint between the outer base 13 and the outer ring fire cover 20, and improving the assembly efficiency.

[0064] Please refer againFigure 1 、 Figure 2 and Figure 3 In an embodiment, the gas mixing chamber 11 further comprises a second mixing chamber 112, and the gas distribution disc 10 further comprises a center burner cap 40, which is arranged in the gas distribution disc 10 and forms a center ring fire passage 50 with the gas distribution disc 10, and the center ring fire passage 50 is in communication with the second mixing chamber 112. The gas in the second mixing chamber 112 is fully mixed and then enters the center ring fire passage 50, and then forms a stable and concentrated flame on the center burner cap 40.

[0065] In an embodiment, the upper end of the center ring fire passage 50 is a whole-circle center ring fire hole 51. The gas in the second mixing chamber 112 is fully mixed and then enters the center ring fire passage 50, and then is sprayed out from the center ring fire hole 51 of the center ring fire passage 50 to burn. Generally, the burning flame is in the form of an upward ring-shaped thin fire.

[0066] Please refer to Figure 2 and Figure 4 In an embodiment, the gas distribution disc 10 further comprises a center base 16, which is located inside the outer base 13 and forms the second mixing chamber 112 in the middle part. The center burner cap 40 is arranged inside the center base 16, and the outer peripheral wall of the center burner cap 40 is spaced apart from the inner peripheral wall of the center base 16 to form the center ring fire passage 50. The arrangement of the center base 16 helps to stabilize the overall structure of the gas distribution disc 10, and also provides a more fine control space for the mixing of gas and air and the formation of flame. The center burner cap 40 is arranged inside the center base 16, so that the center burner cap 40 can stably support and guide the formation of flame in cooperation with the center base 16.

[0067] In the bottom of the center base 16, a second gas inlet 161 in communication with the second mixing chamber 112 is arranged, which is also used to connect the ejector pipe, so that the mixed gas introduced from the ejector pipe can enter the second mixing chamber 112 through the second gas inlet 161.

[0068] Please refer to Figure 2 and Figure 4In an embodiment, the center base 16 comprises a support sleeve 162 and an extension 163. The support sleeve 162 is hollow and a second mixing cavity 112 is formed in the middle of the support sleeve 162. A plurality of support blocks 164 are arranged on the inner circumferential wall of the support sleeve 162 at intervals in the circumferential direction, and air passages 165 are formed between adjacent support blocks 164. The extension 163 is connected to the top of the support sleeve 162, and a hollow cavity 166 is formed in the middle of the extension 163 and expands outward from the second mixing cavity 112. In this case, the bottom of the center cap 40 abuts against the support blocks 164, and the outer circumferential wall of the center cap 40 is arranged at intervals with the wall of the hollow cavity 166 of the extension 163 to form a center ring fire passage 50, which is in communication with the second mixing cavity 112 through the air passages 165. Through the above arrangement, the support blocks 164 are used to support the center cap 40, and the air passages 165 between adjacent support blocks 164 provide a smooth path for the mixed gas to flow from the second mixing cavity 112 to the center ring fire passage 50. The outer circumferential wall of the center cap 40 is arranged at intervals with the wall of the hollow cavity 166 of the extension 163 to provide sufficient flow space for the gas combustion in the center ring fire passage 50, further improving the combustion efficiency and flame stability.

[0069] In an embodiment, the extension 163 of the center base 16 is arranged obliquely, and the outer circumferential wall of the center cap 40 arranged at intervals with the wall of the hollow cavity 166 of the extension 163 is also arranged obliquely to form the center ring fire passage 50.

[0070] In this embodiment, the number of support blocks 164 is 8, and the 8 support blocks 164 arranged at intervals can further ensure the uniformity and stability of the heating. It can be understood that the number and position of the support blocks 164 can be arranged according to the size and weight of the center cap 40, which is not limited herein.

[0071] Please continue to refer to Figure 2 and Figure 4 In an embodiment, the center cap 40 comprises a ring-shaped cap plate 41 and a cap bottom plate 42. The outer circumferential wall of the ring-shaped cap plate 41 is arranged at intervals with the wall of the hollow cavity 166 of the extension 163 to form the center ring fire passage 50. The cap bottom plate 42 is connected to the bottom of the ring-shaped cap plate 41, and the circumferential wall of the cap bottom plate 42 and the bottom wall of the ring-shaped cap plate 41 form a ring-shaped lapping groove 43, which abuts against the top of the support blocks 164. In the above arrangement, the cap bottom plate 42 provides support for the ring-shaped cap plate 41, and the ring-shaped lapping groove 43 not only provides additional support and stability for the connection between the cap bottom plate 42 and the ring-shaped cap plate 41, but also realizes the accurate positioning and fixing of the center cap 40 on the center base 16 by abutting against the top of the support blocks 164.

[0072] Specifically, through the abutting relationship between the annular lap joint groove 43 and the supporting block 164, the center fire cover 40 can be stably installed on the center base 16, so that the flame can be stably transmitted and efficiently combusted, further improving the product reliability of the burner 100.

[0073] Please refer to Figure 1 In an embodiment, the gas distribution disc 10 further comprises a connecting block 17, the connecting block 17 is provided with at least one, the connecting block 17 connects the center base 16 and the outer base 13. The connecting block 17 serves as a bridge between the center base 16 and the outer base 13, which can improve the stable connection between the center base 16 and the outer base 13, and also helps to maintain the shape and stability of the whole gas distribution disc 10.

[0074] In this embodiment, the number of connecting blocks 17 is 3. In actual application, the number and position of the connecting blocks 17 can be determined according to the size, shape and specific design requirements of the gas distribution disc 10, which is not limited here.

[0075] Please refer to Figure 2 and Figure 3 The use process of the burner 100 includes the following:

[0076] The outer injection pipe is connected to the first gas inlet 131 and the second gas inlet 161 of the gas distribution disc 10 respectively, so that the gas or mixed gas enters the first mixing chamber 111 from the first gas inlet 131 and enters the second mixing chamber 112 from the second gas inlet 161.

[0077] After the mixed gas in the first mixing chamber 111 is fully mixed in the first mixing chamber 111, it enters the outer ring fire channel 30 through the pressure equalizing gap 12 and the through hole 1421, so as to form an outer ring flame in the outer ring fire hole 31.

[0078] After the mixed gas in the second mixing chamber 112 is fully mixed in the second mixing chamber 112, it enters the center ring fire channel 50 through the air passage 165, so as to form a center flame in the center ring fire hole 51.

[0079] In the above-mentioned burner 100, by opening the pressure equalizing gap 12 around the outer ring fire cover 20 on the gas distribution disc 10, the gas in the first mixing chamber 111 is pressure balanced through the pressure equalizing gap 12 before entering the outer ring fire channel 30, so that the gas has uniform pressure distribution when entering the outer ring fire channel 30, thereby further ensuring that the gas is more uniform during combustion, improving combustion efficiency and flame stability.

[0080] It should be noted that the terms "horizontal", "vertical", and the like, do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined; the terms "parallel", "perpendicular", and the like, also do not mean that the fittings must be absolutely parallel or perpendicular, but can form a certain angular deviation. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. In addition, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed during use, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0081] It can be understood that the meaning of "multiple" herein is at least two, such as two, three, etc., unless specifically limited. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. The term "and / or", only describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0082] The above only describes the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A burner, characterized by The application relates to a gas distribution disc. The gas distribution disc comprises a gas mixing cavity for gas passing in, and an outer ring fire cover arranged on the gas distribution disc and forming an outer ring fire channel with the gas distribution disc. The outer wall of the gas distribution disc is provided with a plurality of bosses corresponding to the outer ring fire cover and arranged along the circumference, the bosses are used for abutting against the outer ring fire cover, the outer ring fire channel is interrupted at the bosses, the outer ring fire cover is provided with a fire transmission channel corresponding to the bosses, and the outer ring fires on the two sides of the boss pass through the fire transmission channel and are connected. The fire transmission channel is arranged in the thickness direction of the outer ring fire cover, and the fire transmission channel is arranged from one side of the boss close to the entrance of the outer ring fire channel to the edge of the outer ring fire cover at the outlet of the outer ring fire channel.

2. The burner of claim 1, wherein Each fire transmission channel comprises a plurality of fire transmission grooves arranged along the circumference.

3. The burner of claim 1, wherein The gas mixing cavity comprises a first mixing cavity and a second mixing cavity, and the first mixing cavity is communicated with the outer ring fire channel.

4. The burner of claim 1, wherein The gas distribution disc further comprises a center fire cover arranged on the gas distribution disc and forming a center ring fire channel with the gas distribution disc, and the center ring fire channel is communicated with the second mixing cavity. The gas distribution disc comprises an outer base, a disc upper cover arranged on the outer base, a first mixing cavity formed by the disc upper cover and the outer base, an outer ring fire cover arranged on the outer base and forming the outer ring fire channel with the disc upper cover, a center base arranged on the inner side of the outer base, a second mixing cavity formed in the center base, and a center fire cover arranged on the inner side of the center base and forming the center ring fire channel with the inner wall of the center base. The center base comprises a supporting sleeve, a plurality of supporting blocks arranged along the circumference on the inner wall of the supporting sleeve, and a hollow cavity formed in the supporting sleeve and expanding outward from the second mixing cavity.

5. The burner of claim 4, wherein The center fire cover comprises a ring cover plate arranged opposite to the hollow cavity wall of the extension part to form the center ring fire channel, and a fire cover bottom plate connected to the bottom of the ring cover plate and forming a ring lap joint groove with the bottom wall of the ring cover plate. The outer base comprises a base bottom plate, and an outer ring plate arranged on the base bottom plate and abutting against the disc upper cover. The outer base comprises a base bottom plate, and an outer ring plate arranged on the base bottom plate and abutting against the disc upper cover. ​ 6. The burner of claim 5, wherein ​ ​ ​ ​ 7. The burner of claim 6, wherein ​ ​ ​ 8. The burner of claim 5, wherein ​ ​ ​ The inner ring plate of the base is arranged on the base bottom plate and inside the outer ring plate of the base, and the outer ring fire cover is abutted against the inner ring plate of the base.

9. The burner of claim 8, wherein The base bottom plate is provided with a first lap joint part, the disc body upper cover is provided with a second lap joint part, one of the first lap joint part and the second lap joint part comprises a first lap joint protrusion, and the other comprises a first lap joint groove for receiving the first lap joint protrusion; The base bottom plate is further provided with a third lap joint part which is arranged in a spaced manner with the first lap joint part, and the outer ring fire cover is provided with a fourth lap joint part, one of the third lap joint part and the fourth lap joint part comprises a third lap joint protrusion, and the other comprises a second lap joint groove for receiving the third lap joint protrusion.

10. The burner of claim 5, wherein The gas distribution disc further comprises: At least one connecting block is arranged, and the connecting block connects the center base and the outer base.

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