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, and an outer ring fire channel is formed between the outer ring fire cover and the gas distribution disc; the gas distribution disc is provided with a pressure equalizing channel surrounding the outer ring fire cover, and gas in the gas mixing cavity enters the outer ring fire channel after being subjected to pressure equalizing through the pressure equalizing channel. According to the gas distribution disc, the pressure equalizing channel surrounding the outer ring fire cover is formed in the gas distribution disc, so that gas in the gas mixing cavity passes through the pressure equalizing channel to be subjected to pressure equalization before entering the outer ring fire channel, the gas has uniform pressure distribution when entering the outer ring fire channel, and therefore it is further ensured that the gas is more uniform in the combustion process; and the combustion efficiency and the flame stability are improved.

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, wherein the first air supplement is performed by using the gas mixing cavity, and the annular fire hole channel is arranged to facilitate the second air supplement.

[0003] However, since the gas generally directly and quickly enters the annular fire hole from the gas mixing cavity, the gas in the gas mixing cavity is unevenly distributed, and the pressure is uneven, which affects the stability of the annular fire hole. CONTENT OF THE UTILITY MODEL

[0004] The application provides a burner, and solves the technical problem of uneven distribution of gas pressure in a gas distribution disc.

[0005] 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, wherein the gas distribution disc forms a gas mixing cavity therein, and the gas mixing cavity is used for gas passage; 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; wherein the gas distribution disc is provided with an equal pressure channel surrounding the outer ring fire cover, and the gas in the gas mixing cavity enters the outer ring fire channel after being equalized by the equal pressure channel.

[0006] According to an embodiment of the application, the gas mixing cavity comprises a first mixing cavity, the gas distribution disc comprises an outer base and a disc upper cover, the disc upper cover is arranged on the outer base, the disc upper cover and the outer base form the first mixing cavity, and the disc upper cover is provided with the equal pressure channel; and the outer ring fire cover is arranged on the outer base and forms the outer ring fire channel communicating with the first mixing cavity with the disc upper cover.

[0007] According to an embodiment of the application, the disc upper cover and the outer base are spaced apart to form an equal pressure gap, and the equal pressure channel comprises the equal pressure gap; and / or the disc upper cover is provided with a plurality of through holes spaced apart along the circumference, and the equal pressure channel comprises a plurality of through holes arranged around the outer ring fire cover.

[0008] According to an embodiment of the present application, the equalizing channel comprises an equalizing gap, the upper cover of the disc body comprises a first upper cover support plate, a second upper cover support plate and an upper cover top plate, one end of the first upper cover support plate is arranged on the outer base, and the other end extends away from the outer base; the second upper cover support plate is located inside the first upper cover support plate, one end of the second upper cover support plate is arranged in a spaced manner with the outer base to form the equalizing gap, and the other end extends away from the outer base; and the upper cover top plate is connected to the end of the first upper cover support plate and the second upper cover support plate away from the outer base.

[0009] According to an embodiment of the present application, the equalizing channel further comprises a plurality of through holes arranged around the outer ring fire cover, and a plurality of through holes are arranged on the second upper cover support plate in a circumferential spaced manner.

[0010] According to an embodiment of the present application, the outer ring fire cover is located inside the upper cover of the disc body, and the outer ring fire cover comprises a fire cover support plate and a fire cover extension plate, the fire cover support plate is arranged on the outer base; the fire cover extension plate is connected to the fire cover support plate and extends in a tilted manner towards the upper cover top plate, and the fire cover extension plate is arranged in a spaced manner with the upper cover top plate at least in part to form the outer ring fire channel.

[0011] According to an embodiment of the present application, the cross section of the upper cover top plate is in a conical structure, a plurality of bosses are arranged on one side of the upper cover top plate in a circumferential spaced manner, and the bosses are configured to abut against the fire cover extension plate.

[0012] According to an embodiment of the present application, the width of the equalizing gap ranges from 2mm to 6mm.

[0013] 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 upper cover of the disc body is arranged in a spaced manner with the base bottom plate to form the equalizing gap; the base outer ring plate is arranged on the base bottom plate, and the upper cover of the disc body abuts 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 abuts against the base inner ring plate.

[0014] According to an embodiment of the present application, the gas mixing cavity further comprises a second mixing cavity, and the gas distribution disc further comprises a center base and a center fire cover, the center base is located inside the outer base, and the center base forms the second mixing cavity in the middle part; the center fire cover is arranged inside the center base, the outer peripheral wall of the center fire cover and the inner peripheral wall of the center base are arranged in a spaced manner to form the center ring fire channel, and the center ring fire channel communicates with the second mixing cavity.

[0015] The beneficial effects of the present application are: in the present application, the pressure equalization channel is arranged around the outer ring flame cover on the gas distribution disc, so that the gas in the gas mixing cavity is pressure balanced through the pressure equalization channel before entering the outer ring flame channel, so that the gas has uniform pressure distribution when entering the outer ring flame channel, thereby further ensuring that the gas is more uniform during combustion, improving the combustion efficiency and the stability of the flame. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor based on these drawings.

[0017] Figure 1 is a perspective structural view of an embodiment of the combustor of the present application;

[0018] Figure 2 is a sectional view along the section line A-A in the present application; Figure 1

[0019] Figure 3 is a bottom view structural schematic diagram of an embodiment of the combustor of the present application;

[0020] Figure 4 is an exploded structural view of an embodiment of the combustor of the present application;

[0021] Figure 5 is an exploded structural view of the outer ring flame cover and the flame distribution disc of the present application. DETAILED DESCRIPTION

[0022] 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, but 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.

[0023] In this paper, "embodiment" means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.​

[0024] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0025] Please refer to Figure 1 , Figure 2 and Figure 3 , an embodiment of the present application provides a burner 100, comprising a gas distribution disc 10 and an outer ring fire cover 20. Wherein, the outer ring fire 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 fire 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.

[0026] Specifically, a gas mixing cavity 11 (see Figure 3 ) is formed in the gas distribution disc 10, which is used for the gas to pass in.

[0027] 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.

[0028] The outer ring fire cover 20 is arranged on the gas distribution disc 10, and the outer ring fire cover 20 and the gas distribution disc 10 form an outer ring fire passage 30. Wherein, the gas distribution disc 10 is provided with a pressure equalization passage 12 around the outer ring fire cover 20, and the gas in the gas mixing cavity 11 enters the outer ring fire passage 30 after pressure equalization through the pressure equalization passage 12.

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

[0030] In the above burner 100, the pressure equalization channel 12 is arranged around the outer ring flame cover 20 on the gas distribution disc 10, so that the gas in the gas mixing chamber 11 can be pressure equalized through the pressure equalization channel 12 before entering the outer ring flame channel 30, so that the gas has a uniform pressure distribution when entering the outer ring flame channel 30, thereby further ensuring that the gas is more uniform during combustion, and improving the combustion efficiency and stability of the flame.

[0031] In an embodiment, the upper end of the outer ring flame channel 30 is a whole-circle outer ring flame hole 31. After being sufficiently mixed, the gas in the gas mixing chamber 11 is distributed in pressure through the pressure equalization channel 12, and then enters the outer ring flame channel 30, and is burned by being sprayed out of the outer ring flame hole 31 of the outer ring flame channel 30. The flame of the combustion is usually in the form of an upward annular thin flame.

[0032] 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 is provided with the pressure equalization channel 12. The outer ring flame cover 20 is arranged on the outer base 13 and forms the outer ring flame 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 cooperatively form the first mixing chamber 111 to provide sufficient space for the mixing process of the gas and air. At the same time, the disc upper cover 14 is provided with the pressure equalization channel 12, which can ensure that the gas in the first mixing chamber 111 can be pressure equalized before entering the outer ring flame channel 30, so as to ensure that the subsequent gas can be uniformly distributed into the outer ring flame channel 30. The outer ring flame cover 20 and the disc upper cover 14 form the outer ring flame channel 30, which can guide the mixed gas to flow along a specific path to the burner 100, so as to ensure that the flame can be uniformly distributed at the outer ring flame hole 31, thereby improving the heating efficiency.

[0033] In the outer base 13, a first gas inlet 131 that communicates with the first mixing chamber 111 is arranged at the bottom of the outer base 13, and the first gas inlet 131 is used to externally connect an ejector pipe, so that the mixed gas introduced from the ejector pipe can enter the first mixing chamber 111 through the first gas inlet 131.

[0034] 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.

[0035] Please refer to Figure 2 , Figure 3 and Figure 4In an embodiment, the disc upper cover 14 is spaced apart from the outer base 13 to form a pressure equalization gap 121, and the pressure equalization channel 12 comprises the pressure equalization gap 121. That is, the pressure equalization channel 12 is formed by the cooperation of the disc upper cover 14 and the outer base 13 to ensure that the gas in the first mixing chamber 111 can be pressure balanced through the pressure equalization gap 121 before entering the outer annular flame channel 30, so as to ensure that the subsequent fuel gas can be uniformly distributed into the outer annular flame channel 30.

[0036] In an embodiment, the disc upper cover 14 is spaced apart from the outer base 13 to form a pressure equalization gap 121, and the pressure equalization channel 12 comprises the pressure equalization gap 121. That is, the pressure equalization channel 12 is formed by the cooperation of the disc upper cover 14 and the outer base 13 to ensure that the gas in the first mixing chamber 111 can be pressure balanced through the pressure equalization gap 121 before entering the outer annular flame channel 30, so as to ensure that the subsequent fuel gas can be uniformly distributed into the outer annular flame channel 30.

[0037] It can be understood that the present application can only provide the pressure equalization gap 121 around the outer annular flame cover 20 on the gas distribution disc 10, or only provide the through hole 1421 around the outer annular flame cover 20, so as to improve the diversity of the setting position of the pressure equalization channel 12 on the gas distribution disc 10.

[0038] Similarly, the pressure equalization gap 121 and the through hole 1421 can also be provided on the gas distribution disc 10 at the same time, so as to significantly improve the effect of uniform distribution of fuel gas.

[0039] Please refer to Figure 2 and Figure 4 In an embodiment, the pressure equalization channel 12 comprises the pressure equalization gap 121, and the disc upper cover 14 comprises 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. One end of the second upper cover support plate 142 is spaced apart from the outer base 13 to form the pressure equalization gap 121, 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.

[0040] In this embodiment, the pressure equalization gap 121 is formed between one end of the second upper cover support plate 142 and the outer base 13, and the outward extension of the first upper cover support plate 141 and the second upper cover support plate 142 helps to expand the volume of the first mixing chamber 111, so that the fuel gas and other gases can be mixed more fully in the first mixing chamber 111. 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 first mixing chamber 111, reducing the risk of fuel gas leakage and ensuring that the fuel gas and other gases are not disturbed during the mixing process. At the same time, the gases in the first mixing chamber 111 can be pressure balanced through the pressure equalization gap 121 before entering the outer annular flame passage 30, to ensure that the subsequent fuel gas can be uniformly distributed into the outer annular flame passage 30.

[0041] In this embodiment, the first upper cover support plate 141 and the second upper cover support plate 142 both extend in the vertical direction away from the outer base 13.

[0042] In other embodiments, the first upper cover support plate 141 and the second upper cover support plate 142 can both extend in the 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 the vertical direction and the other extends in the inclined direction, which is not limited here.

[0043] Please refer to Figure 2 In an embodiment, the width d of the pressure equalization gap 121 ranges from 2 to 6 mm.

[0044] In this embodiment, the width d of the pressure equalization gap 121 refers to the width in the vertical direction. Specifically, the width d of the pressure equalization gap 121 is 2 mm, 3.5 mm, 5 mm, or 6 mm, etc.

[0045] Please continue to refer to Figure 2 and Figure 4 In an embodiment, the pressure equalization passage 12 further comprises a plurality of through holes 1421 arranged around the outer annular flame cover 20, and the second upper cover support plate 142 is provided with a plurality of through holes 1421 arranged circumferentially at intervals. The above arrangement allows the gases in the first mixing chamber 111 to enter the outer annular flame passage 30 through the pressure equalization gap 121, and also enter the outer annular flame passage 30 through the through holes 1421, and the plurality of circumferentially spaced through holes 1421 can also allow the gases in the first mixing chamber 111 to be distributed through the plurality of through holes 1421 before entering the outer annular flame passage 30, ensuring that the fuel gas has a uniform distribution when entering the outer annular flame passage 30, thereby further improving the combustion efficiency and stability of the flame.

[0046] In this embodiment, the plurality of circumferentially spaced through holes 1421 are located above the pressure equalization gap 121.

[0047] Specifically, the number of 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 set according to the size of the burner 100 and the gas flow demand to ensure that the gas has sufficient ventilation area.

[0048] In an embodiment, the through holes 1421 can be circular, square, or other shapes, which are not limited herein.

[0049] Please continue to refer to Figure 2 and Figure 4 In an embodiment, the outer ring fire cover 20 is located inside the upper cover 14 of the disc body, and the outer ring fire cover 20 includes a fire cover support plate 21 and a fire cover extension plate 22. The fire cover support plate 21 is arranged on the outer base 13. The fire cover extension plate 22 is connected to the fire cover support plate 21 and extends obliquely towards the upper cover top plate 143. The fire cover extension plate 22 is at least partially arranged in opposite spacing with the upper cover top plate 143 to form an outer ring fire passage 30. Through the above arrangement, the fire cover support plate 21 is used to fix and support the fire cover extension plate 22. The obliquely arranged fire cover extension plate 22 not only helps to guide the gas flow in the outer ring fire passage 30 to the outer ring fire hole 31, but also effectively adjusts the direction and intensity of the flame according to the oblique angle of the fire cover extension plate 22, so that the flame is more uniform and close to the outer ring fire hole 31, thereby improving the heating efficiency.

[0050] Please refer to Figure 2 , Figure 4 and Figure 5 In an embodiment, the cross section of the upper cover top plate 143 is in a conical structure. The side of the upper cover top plate 143 facing the fire cover extension plate 22 is provided with a plurality of bosses 15 arranged in circumferential spacing, and the bosses 15 are configured to abut against the fire cover extension plate 22. The conical structure of the upper cover top plate 143 can form a first mixing chamber 111 with the first upper cover support plate 141, the second upper cover support plate 142, and the outer base 13, thereby effectively guiding the gas and other gases to fully mix in the first mixing chamber 111. The bosses 15 abut against the fire cover extension plate 22, which can limit the shaking of the outer ring fire cover 20 to some extent, thereby enhancing the stability of the entire structure. At the same time, it can also ensure that the fire cover extension plate 22 and the upper cover top plate 143 maintain a proper spacing, thereby maintaining the smoothness of the outer ring fire passage 30 and further improving the combustion efficiency.

[0051] In the present embodiment, the number of bosses 15 is 4, which uniformly abut against the side wall of the fire cover extension plate 22, so that the fire cover extension plate 22 is uniformly stressed, thereby reducing the risk of deviation or deformation of the outer ring fire cover 20 during use, thereby improving the stability of the outer ring fire cover 20 arranged inside the upper cover 14 of the disc body. It can be understood that the size, position, and number of the bosses 15 can be specifically arranged according to the shape and size of the outer ring fire cover 20 and the upper cover 14 of the disc body, which are not limited herein.

[0052] Please continue to refer to Figure 2 , Figure 4 and Figure 5 In an embodiment, the outer ring fire channel 30 is interrupted at the boss 15, so that the outer ring fire formed by the outer ring fire hole 31 of the outer ring fire channel 30 is interrupted at the boss 15, and the fire cover extension plate 22 is provided with a fire transmission channel 23 corresponding to the boss 15, and the outer ring fires on both sides of the boss 15 pass through the fire transmission channel 23 to be connected. Through the above setting, the outer ring fire formed by the outer ring fire hole 31 of the outer ring fire channel 30 is interrupted at the boss 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 boss 15, and the flame is connected through the fire transmission channel 23 provided on the fire cover extension plate 22 corresponding to the boss 15, thereby improving the product reliability of the burner 100.

[0053] Please continue to refer to Figure 2 , Figure 4 and Figure 5 In an embodiment, the fire transmission channel 23 is provided in the thickness direction of the outer ring fire cover 20, and the fire transmission channel 23 is extended from one 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 outlet of the outer ring fire channel 30. Through the above setting, the flame can be transmitted from one side of the boss 15 to the other side along a relatively direct and efficient path, that is, the flame can directly pass through the outer ring fire cover 20 to be connected, thereby reducing energy loss and also reducing the risk of unstable flame shape.

[0054] Specifically, the entrance of the fire transmission channel 23 is located on one 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, thereby reducing the risk of excessive spread or extinguishment of the flame at the edge of the boss 15. The outlet of the fire transmission channel 23 is located at the edge of the outlet of the outer ring fire channel 30, so that the flame can seamlessly re-integrate into the outer ring fire hole 31 of the outer ring fire channel 30, thereby maintaining the continuity and stability of the flame.

[0055] It can be understood that in the setting of the size of the fire transmission channel 23, the flame should be allowed to pass smoothly while limiting excessive gas leakage and unstable spread of the flame.

[0056] In an embodiment, the fire transmission channel 23 is a hole structure, that is, the fire transmission channel 23 does not extend to the edge of the outer ring fire cover 20 at the outlet of the outer ring fire channel 30. At this time, as long as the length of the fire transmission 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, the outer ring fires on both sides of the boss 15 can also pass through the fire transmission channel 23 to be connected.

[0057] 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 transmission channel 23 in the circumferential direction. The above arrangement enables the boss 15 to effectively support and guide the flame into the fire transmission channel 23, reducing the risk of flame fluctuation and extinction at the edge of the boss 15.

[0058] Please continue to refer to Figure 5 In an embodiment, each fire transmission channel 23 includes a plurality of fire transmission grooves 231, which are circumferentially spaced apart. With the above arrangement, the flame passing through the fire transmission channel 23 does not rely on a single fire transmission groove 231 path, but can pass through multiple parallel fire transmission grooves 231. This multi-path flame transmission mode enables the flame to continue to pass through other fire transmission grooves 231 even if there is a blockage or flame extinction in a certain fire transmission groove 231, thereby further improving the continuity and stability of flame transmission.

[0059] Please refer again Figure 2 and Figure 4 In an embodiment, the outer base 13 includes a base bottom plate 132, a base outer ring plate 133, and a base inner ring plate 134, and the disc upper cover 14 and the base bottom plate 132 are spaced apart to form an equalizing gap 121. The base outer ring plate 133 is arranged on the base bottom plate 132, and the disc upper cover 14 abuts against 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 abuts against the base inner ring plate 134. With 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, providing stable support for the disc upper cover 14 and the outer ring fire cover 20, and also improving the convenience of installing the disc upper cover 14 and the outer ring fire cover 20 on the outer base 13.

[0060] Please refer to Figure 1 and Figure 2 In an embodiment, the end of the base outer ring plate 133 away from the base bottom plate 132 is provided with a first overlapping portion 1331, and the end of the first upper cover support plate 141 away from the upper cover top plate 143 is provided with a second overlapping portion 1411, one of the first overlapping portion 1331 and the second overlapping portion 1411 includes a first overlapping protrusion, and the other includes a first overlapping groove receiving the first overlapping protrusion. With the combination of the first overlapping protrusion and the first overlapping groove, not only is the reliable connection between the base outer ring plate 133 and the first upper cover support plate 141 achieved, but also the structural strength and stability of the entire burner 100 are enhanced.

[0061] It can be understood that the first lap protrusion generally has a certain size and shape, such as rectangular, circular or trapezoidal, etc., and the shape, size and position of the corresponding first lap groove are matched with the first lap protrusion to ensure that the two can be accurately docked.

[0062] Specifically, when the first lap protrusion is arranged on the base outer ring plate 133 as the first lap portion 1331, the first lap groove is arranged on the first upper cover support plate 141 as the second lap portion 1411. Conversely, when the first lap protrusion is arranged on the first upper cover support plate 141 as the second lap portion 1411, the first lap groove is arranged on the base outer ring plate 133 as the first lap portion 1331.

[0063] In the present embodiment, the first lap protrusion is arranged on the base outer ring plate 133 as the first lap portion 1331, and the first lap groove is arranged on the first upper cover support plate 141 as the second lap portion 1411. At this time, the first lap 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 lap protrusion abuts against the groove wall of the first lap groove of the fire cover support plate 21.

[0064] It can be understood that the first lap groove can also be formed only on the bottom wall of the first upper cover support plate 141, so that the first lap groove is formed with a first opening facing the base outer ring plate 133. At this time, the first lap protrusion on the base outer ring plate 133 can directly extend into the first lap groove through the first opening, thereby realizing the lap between the outer base 13 and the disc body upper cover 14 and improving the assembly efficiency.

[0065] Please continue to refer to Figure 1 and Figure 2 In an embodiment, the base inner ring plate 134 is provided with a third lap portion 1341 at an end away from the base bottom plate 132, and the fire cover support plate 21 is provided with a fourth lap portion 211 at an end away from the fire cover extension plate 22. One of the third lap portion 1341 and the fourth lap portion 211 comprises a third lap protrusion, and the other comprises a second lap groove receiving the third lap protrusion. Through the combination of the second lap protrusion and the second lap groove, not only the reliable connection between the base inner ring plate 134 and the fire cover support plate 21 is realized, but also the structural strength and stability of the entire burner 100 are enhanced.

[0066] It can be understood that the second lap protrusion generally has a certain size and shape, such as rectangular, circular or trapezoidal, etc., and the shape, size and position of the corresponding second lap groove are matched with the second lap protrusion to ensure that the two can be accurately docked.

[0067] Specifically, when the second lap protrusion is arranged on the inner ring plate 134 of the base as the third lap portion 1341, the second lap groove is arranged on the fire cap support plate 21 as the fourth lap portion 211. Conversely, when the second lap protrusion is arranged on the fire cap support plate 21 as the fourth lap portion 211, the second lap groove is arranged on the inner ring plate 134 of the base as the third lap portion 1341.

[0068] In the present embodiment, the second lap protrusion is arranged on the inner ring plate 134 of the base as the third lap portion 1341, and the second lap groove is arranged on the fire cap support plate 21 as the fourth lap portion 211. The second lap groove is formed between the side wall of the fire cap support plate 21 away from the fire cap support plate 21 and the bottom wall of the fire cap support plate 21, and the second lap protrusion is in abutment with the groove wall of the second lap groove of the fire cap support plate 21.

[0069] It can be understood that the second lap groove can also be formed only on the bottom wall of the fire cap support plate 21, so that the second lap groove is formed with a second opening facing the inner ring plate 134 of the base. At this time, the second lap protrusion on the inner ring plate 134 of the base can directly extend into the second lap groove through the second opening, thereby achieving the lap between the outer base 13 and the outer ring fire cap 20 and improving the assembly efficiency.

[0070] Please refer to Figure 1 , Figure 2 and Figure 3 , in an embodiment, the gas mixing cavity 11 further comprises a second mixing cavity 112, and the gas distribution disc 10 further comprises a center fire cap 40 arranged on the gas distribution disc 10, and a center ring fire passage 50 is formed between the center fire cap 40 and the gas distribution disc 10, and the center ring fire passage 50 communicates with the second mixing cavity 112. The gas in the second mixing cavity 112 is fully mixed and then enters the center ring fire passage 50, and then forms a stable and concentrated flame on the center fire cap 40.

[0071] In an embodiment, the upper end of the center ring fire passage 50 is a whole-circle center annular fire hole 51. The gas in the second mixing cavity 112 is fully mixed and then enters the center ring fire passage 50, and then is sprayed out from the center annular fire hole 51 of the center ring fire passage 50 to burn. Usually, the burning flame is in the form of an upward annular thin flame.

[0072] Please refer to Figure 2 and Figure 4In an embodiment, the gas distribution tray 10 further comprises a center base 16, which is located inside the outer base 13 and has a second mixing cavity 112 formed in the middle. A center fire cap 40 is arranged inside the center base 16, and the outer peripheral wall of the center fire cap 40 is spaced apart from the inner peripheral wall of the center base 16 to form a center ring fire passage 50. The center base 16 helps to stabilize the overall structure of the gas distribution tray 10 and provides more fine control space for the mixing of gas and air and the formation of flame. The center fire cap 40 is arranged inside the center base 16, so that the center fire cap 40 can stably support and guide the formation of flame in cooperation with the center base 16.

[0073] The bottom of the center base 16 is provided with a second air inlet 161 communicating with the second mixing cavity 112, which is also used to connect the ejector pipe, so that the mixed gas introduced from the ejector pipe can enter the second mixing cavity 112 through the second air inlet 161.

[0074] Please continue to refer to Figure 2 and Figure 4 In an embodiment, the center base 16 comprises a support sleeve 162 and an extension part 163. The support sleeve 162 is hollow and has a second mixing cavity 112 formed in the middle. The inner peripheral wall of the support sleeve 162 is spaced apart in the circumferential direction and is provided with a plurality of support blocks 164, and the adjacent support blocks 164 form an air passage 165. The extension part 163 is connected to the top of the support sleeve 162, and the middle of the extension part 163 forms a hollow cavity 166 which expands outward from the second mixing cavity 112. The bottom of the center fire cap 40 abuts against the support block 164, and the outer peripheral wall of the center fire cap 40 is spaced apart from the wall of the hollow cavity 166 of the extension part 163 to form the center ring fire passage 50, which communicates with the second mixing cavity 112 through the air passage 165. Through the above arrangement, the support blocks 164 are used to support the center fire cap 40, and the air passage 165 between the adjacent support blocks 164 provides a smooth path for the mixed gas to flow from the second mixing cavity 112 to the center ring fire passage 50. The spaced apart arrangement of the outer peripheral wall of the center fire cap 40 and the wall of the hollow cavity 166 of the extension part 163 provides sufficient flow space for the combustion of gas in the center ring fire passage 50, further improving the combustion efficiency and flame stability.

[0075] In an embodiment, the extension part 163 of the center base 16 is arranged obliquely, and the outer peripheral wall of the center fire cap 40 which is spaced apart from the wall of the hollow cavity 166 of the extension part 163 is also arranged obliquely to form the center ring fire passage 50.

[0076] In this embodiment, the number of support blocks 164 is 8, and the 8 support blocks 164 are arranged at equal intervals to further ensure the uniformity of heating and the stability of contact. It can be understood that the number and position of the support blocks 164 can be set according to the size and weight of the central fire cover 40, which is not limited herein.

[0077] Please continue to refer to Figure 2 and Figure 4 In an embodiment, the central fire cover 40 includes a ring-shaped cover plate 41 and a fire cover bottom plate 42. The outer peripheral wall of the ring-shaped cover plate 41 is arranged in opposite intervals with the wall of the hollow cavity 166 of the extension part 163 to form the central ring fire passage 50. The fire cover bottom plate 42 is connected to the bottom of the ring-shaped cover plate 41, and the peripheral wall of the fire cover bottom plate 42 and the bottom wall of the ring-shaped cover plate 41 form an annular lapping groove 43, which abuts against the top of the support block 164. In the above arrangement, the fire cover bottom plate 42 provides support for the ring-shaped cover plate 41, and at the same time, the annular lapping groove 43 not only provides additional support and stability for the connection between the fire cover bottom plate 42 and the ring-shaped cover plate 41, but also realizes the accurate positioning and fixing of the central fire cover 40 on the central base 16 by abutting against the top of the support block 164.

[0078] Specifically, through the abutting relationship between the annular lapping groove 43 and the support block 164, the central fire cover 40 can be stably installed on the central base 16, so that the flame can be stably transmitted and efficiently combusted, further improving the product reliability of the burner 100.

[0079] Please refer to Figure 1 In an embodiment, the gas distribution disc 10 further includes a connecting block 17, and the connecting block 17 is provided with at least one connecting block 17 connecting the central base 16 and the outer base 13. The connecting block 17 serves as a bridge between the central base 16 and the outer base 13, which can improve the stable connection between the central base 16 and the outer base 13, and also helps to maintain the shape and stability of the whole gas distribution disc 10.

[0080] 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 herein.

[0081] Please refer to Figure 2 and Figure 3 The use process of the burner 100 includes the following:

[0082] The outer ejector pipe is respectively connected to the first gas inlet 131 and the second gas inlet 161 of the gas distribution disc 10, 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.

[0083] After the mixed gas in the first mixing chamber 111 is sufficiently mixed, the mixed gas enters the outer annular flame channel 30 through the pressure equalizing channel 12, so as to form an outer annular flame in the outer annular flame hole 31.

[0084] After the mixed gas in the second mixing chamber 112 is sufficiently mixed, the mixed gas enters the central annular flame channel 50 through the venting channel 165, so as to form a central flame in the central annular flame hole 51.

[0085] In the above burner 100, by opening the pressure equalizing channel 12 around the outer annular flame cover 20 on the gas distribution disc 10, the gas in the first mixing chamber 111 is pressure equalized through the pressure equalizing channel 12 before entering the outer annular flame channel 30, so that the gas has a uniform pressure distribution when entering the outer annular flame channel 30, thereby further ensuring that the gas is more uniform during combustion, improving combustion efficiency and flame stability.

[0086] 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.

[0087] 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 associated objects before and after it.

[0088] The above merely describes the embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which is made according to the content of the present application specification and drawings, is 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 entering. The gas distribution disc is provided with an equal pressure passage around the outer ring flame cover. The gas mixing cavity comprises a first mixing cavity.

2. The burner of claim 1, wherein The gas distribution disc comprises an outer base and a disc upper cover. The disc upper cover and the outer base are spaced apart to form an equal pressure gap. The equal pressure passage comprises the equal pressure gap.

3. The burner of claim 2, wherein The disc upper cover is provided with a plurality of through holes.

4. The burner of claim 3, wherein The equal pressure passage comprises a plurality of through holes around the outer ring flame cover. The outer ring flame cover is located inside the disc upper cover. The outer ring flame cover comprises a flame cover support plate and a flame cover extension plate. The equal pressure gap has a width of 2-6 mm.

5. The burner of claim 4, wherein The outer base comprises a base bottom plate, a base outer ring plate and a base inner ring plate.

6. The burner of claim 4, wherein The gas distribution disc further comprises a center base and a center ring flame cover. The center base is located inside the outer base. The center ring flame cover is located inside the center base.

7. The burner of claim 6, wherein The outer periphery of the center ring flame cover is spaced apart from the inner periphery of the center base to form a center ring flame passage.

8. The burner of claim 4, wherein The center ring flame passage is communicated with the second mixing cavity.

9. The burner of claim 4, wherein ​ ​ ​ ​ 10. The burner of claim 2, wherein ​ ​ ​

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