A gas distribution device and a burner using the same

Abstract

The present invention discloses a gas distribution device and a burner using the same, wherein the distribution device comprises: a front main gas passage for introducing gas; a rear main gas passage, wherein at least two groups of nozzles are arranged on the rear main gas passage; at least two gas branch passages are arranged in parallel, connecting the front and rear main gas passages, and used to deliver gas to the at least two groups of nozzles; a throat pipe is arranged at the connection between the front main gas passage and the gas branch passage, and used to adjust the pressure of the gas passage from the gas branch passage to the nozzle; and a control valve is used to control the on-off of each gas branch passage. The gas distribution device can not only realize the group control of the nozzles to improve the heat load regulation ratio, but the design of the throat pipe enables the distribution device to adapt to the changes in the number of nozzles in different sections, thereby ensuring the stability of the combustion conditions, reducing the risk of gas leakage, and improving the adaptability of the device.

Description

Technical Field

[0001] The present invention belongs to the technical field of gas distribution devices, and in particular, relates to a gas distribution device and a burner using the same. Background Art

[0002] The existing atmospheric gas heating furnace or water heater burner gas distribution device is mostly made of square tube welding and spraying, or aluminum alloy profile processing and production. The gas distribution device itself does not have the function of grouping control of the nozzles. The heat load adjustment ratio is usually 1:3, and the minimum heat load cannot be further reduced.

[0003] It is understandable that the gas distribution device of the burner of the atmospheric gas heating furnace or water heater cannot implement group control of the nozzles, and thus the combustion of the fire grate cannot be controlled in groups. When the heat load adjustment ratio is 1:3, the heat load cannot be further reduced to ensure combustion stability.

[0004] When using the heating function in winter, it may start and stop repeatedly, the gas consumption will increase, and the temperature in the room will fluctuate, reducing the comfort level; when using the domestic hot water function in summer, if the water flow rate is small, the minimum temperature rise of the domestic hot water will be too large, and the bathing water temperature will be too hot, affecting the user's bathing experience and causing complaints.

[0005] Some solutions increase the heat load regulation ratio to 1:5 by adjusting the combustion parameters, but the ability to resist environmental changes such as increased external wind pressure and increased altitude is reduced.

[0006] The Chinese patent application number 200920265366.6 discloses a gas distribution device, including a gas valve body, a main gas channel arranged on the gas valve body, and a first gas channel connected to the main gas channel, wherein the first gas channel is provided with a through hole connected to the monolithic burner, and is characterized in that the gas valve body is also provided with at least one second gas channel independently arranged and not directly connected to the first gas channel, wherein the second gas channel is also provided with a through hole connected to the monolithic burner, the second gas channel is connected to the main gas channel through a fourth gas channel, and a control valve capable of controlling the connection and disconnection of the second gas channel and the main gas channel is provided between the fourth gas channel and the main gas channel. This patent solution can adjust the number of monolithic burners involved in combustion, reduce the minimum heat load of the gas appliance, reduce the minimum temperature rise, and solve the problem of too hot water in summer.

[0007] The Chinese patent application number is 201811102689.3, which discloses a multi-stage segmented control solenoid valve switch, including an airway, an air inlet nozzle is installed at one end of the airway, a solenoid valve is installed on the airway, a valve core is installed at the other end of the airway, three air outlets are installed on the valve core, a mounting body is installed at one end of the valve core, and a micro switch is installed on the mounting body. The multi-stage segmented control solenoid valve switch can control the gas flow at any time, that is, it is divided into one hole, two holes and three holes, one hole controls low fire, two holes control medium fire, and three holes control high fire. It is easy to control and more energy-saving and environmentally friendly.

[0008] Although the technical solutions in the above patents can improve the heat load regulation ratio, they do not discuss the problems of poor combustion condition stability, gas leakage safety hazards, poor device adaptability, etc. that may exist when the number of burner pieces and the number of air outlets change.

[0009] In view of this, the present invention is proposed. Summary of the invention

[0010] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a gas distribution device and a burner using the same, which can not only improve the thermal load regulation ratio of the burner, but also ensure the stability of the combustion conditions, reduce the risk of gas leakage, and improve the adaptability of the distribution device.

[0011] To achieve the above object, a first aspect of the present invention provides a gas distribution device, comprising:

[0012] The front main gas passage is used to introduce gas;

[0013] A rear main gas passage, wherein at least two groups of nozzles are provided on the rear main gas passage;

[0014] At least two gas branch passages are arranged in parallel and connected to the front and rear gas main passages, and are used to transport gas to the at least two groups of nozzles;

[0015] The throat is provided at the connection between the front main gas passage and the gas branch passage, and is used to adjust the pressure in the gas passage from the gas branch passage to the nozzle;

[0016] Control valve, used to control the on and off of each gas branch passage;

[0017] Among them, the front main gas passage, the rear main gas passage, the gas branch passage and the throat are an integrated structure; the front main gas passage can be connected to the gas, enter the gas branch passage through the throat, and be transported to the nozzle through the rear main gas passage.

[0018] The at least two gas branch passages may be connected to the front gas main passage through a throat.

[0019] Furthermore, the number of nozzles in each nozzle group is different, and the throat diameters of each gas branch passage corresponding to each nozzle group are different.

[0020] Furthermore, the diameter of the throat is directly proportional to the number of nozzles in the nozzle group corresponding to the gas branch passage.

[0021] Furthermore, the at least two gas branch passages are arranged in one-to-one correspondence with the at least two groups of nozzles.

[0022] Furthermore, the at least two gas branch passages include: a normally open gas branch passage and a controllable on-off gas branch passage; or, the at least two gas branch passages are both controllable on-off gas branch passages.

[0023] Furthermore, the control valve is arranged at the connection between the gas branch passage and the front gas main passage, and controls the on-off of the gas branch passage by controlling the on-off of the throat.

[0024] Furthermore, the control valve is a solenoid valve.

[0025] Furthermore, it also includes: a sealing baffle plate arranged on the gas branch passage, and preferably, a sealing strip for sealing is provided on the sealing baffle plate.

[0026] Furthermore, the front main gas passage, the rear main gas passage, at least two gas branch passages, and the throat are an integrated die-casting structure;

[0027] At least two groups of nozzles may be provided on the rear main gas passage;

[0028] A control valve installation structure is provided at the connection between at least one of the gas branch passages and the front gas main passage for installing the control valve.

[0029] To achieve the above object, a second aspect of the present invention provides a burner, comprising any of the above-mentioned gas distribution devices, wherein the gas distribution device comprises a sealing baffle;

[0030] The sealing baffle cooperates with the burner air chamber cavity to seal the air chamber.

[0031] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art:

[0032] 1. The setting of the throat makes the gas volume in the segmented cavity adapt to the number of corresponding groups of nozzles, balances the pressure in each segmented cavity, ensures the stability of the combustion condition, reduces the risk of gas leakage, and improves the adaptability of the device;

[0033] 2. The integrated processing of the main functional modules can further reduce the risk of gas leakage and ensure the stability of the combustion conditions;

[0034] 3. The controllable segmented design controls the number of nozzles involved in combustion, thereby improving the heat load adjustment ratio of the burner.

[0035] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0037] Figure 1 This is a structural schematic diagram of a fuel distribution device according to an embodiment of the present invention;

[0038] Figure 2 for Figure 1 A front view of a fuel distribution device;

[0039] Figure 3 for Figure 1 A top view of a fuel distribution device;

[0040] Figure 4 for Figure 1 A left side view of a fuel distribution device;

[0041] Figure 5 for Figure 1 A right side view of a fuel distribution device;

[0042] Figure 6 for Figure 1 A cross-sectional view of a fuel distribution device.

[0043] In the accompanying drawings: 2, front main gas passage; 4, rear main gas passage; 61, first gas branch passage; 62, second gas branch passage; 63, third gas branch passage; 81, first throat; 82, second throat; 83, third throat; 10, nozzle; 11, first group of nozzles; 12, second group of nozzles; 13, third group of nozzles; 121, first control valve; 122, second control valve; 14, sealing baffle; 16, sealing strip.

[0044] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0046] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention, unless otherwise specified.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In order to enable technical personnel to have an overall understanding of the present application so that they can better understand the present invention, a rough summary of the basic concept of the present invention is now made: In the present invention, the gas distribution device can adopt an aluminum alloy substrate, can be produced and processed by an integrated die-casting process, and can be equipped with a segmented control valve, specifically a solenoid valve, which can control the on and off of the gas paths of different groups of nozzles, thereby realizing the function of segmented combustion, and can increase the heat load regulation ratio to 1:5. The gas distribution device can be provided with a front gas main passage, several gas branch passages and a rear gas main passage. The front gas main passage can be used to connect the gas valve to access the gas, the rear gas main passage can be used to install the nozzle and group the nozzles, the gas branch passage can be used to connect the front gas main passage and the rear gas main passage, and several segmented control valves can be provided at the connection between the branch passage and the front gas main passage, which can be a solenoid valve, by controlling the on and off of the gas branch passage to control different groups of nozzles. The on-off control of the group nozzle gas is carried out, more precisely, the on-off of the gas branch passage is controlled by controlling the on-off of the throat at the connection between the front gas main passage and the branch passage, and then the on-off control of the gas of different groups of nozzles is carried out, so as to control the heat load adjustment ratio; when the number of nozzle segments participating in the combustion changes, that is, when the number of nozzle groups participating in the combustion changes, the number of nozzles in different groups is different, and the pressure after the gas valve will fluctuate. An inappropriate throat diameter will cause the pressure uniformity of the cavity of each segmented passage to become worse, the combustion will be more unstable, and the adaptability of the product will also become worse. Therefore, the present invention is provided with a throat at the connection between each branch passage and the front gas main passage. The throat diameter of the branch passage is adapted to the number of nozzles corresponding to the gas branch passage, and can be set according to a certain ratio. The diameters can be different, which is used to ensure uniform pressure in each segmented cavity, specifically, to ensure the uniformity of pressure in the passage from the gas branch passage to the nozzle after the throat.

[0049] The gas distribution device obtained according to the above design principle can not only improve the heat load regulation ratio, but also even out the pressure in each segmented cavity, thereby ensuring the stability of the combustion conditions, reducing the risk of gas leakage, and improving the adaptability of the device.

[0050] like Figure 1 As shown, Figure 1 It is a structural schematic diagram of a gas distribution device according to an embodiment of the present invention. Specifically, in this embodiment, the gas distribution device includes: a front main gas passage 2, a rear main gas passage 4, a gas branch passage, a throat, and a control valve, wherein the rear main gas passage 4 is provided with a nozzle 10.

[0051] Specifically, Figures 2 to 6 Can be Figure 1 The embodiment of the present invention includes a front view, a top view, a left view, a right view and a cross-sectional view of a fuel distribution device.

[0052] The front main gas passage 2 is used for introducing gas, and a gas ratio regulating valve may be provided thereon to control the gas entering the distribution device as a whole.

[0053] The rear main gas passage 4 is provided with nozzles, and the nozzles are grouped. To meet the needs of group and segment control, at least two groups of nozzles are arranged thereon.

[0054] The nozzle can be installed on the rear main gas passage 4 through a mounting structure, or can be directly processed on the rear main gas passage 4.

[0055] As for the grouping of the nozzles, an immutable partition can be made on the cavity of the rear main gas passage 4 before the distribution device leaves the factory so as to separate the chamber of the rear main gas passage, and then the nozzles arranged on the rear main gas passage can be grouped. Alternatively, a manually controlled partition component can be provided on the cavity of the rear main gas passage 4 so that the user can divide the nozzles into groups according to their needs.

[0056] In an embodiment of the present invention, at least two groups of nozzles may be provided on the rear main gas passage, and the number of nozzles in the at least two groups of nozzles may be different.

[0057] At least two gas branch passages are arranged in parallel and connected to the front and rear gas main passages, and are used to transport gas to the at least two groups of nozzles.

[0058] At least two gas branch passages are arranged in one-to-one correspondence with at least two groups of nozzles, that is, the number of branch passages is consistent with the number of nozzle groups.

[0059] At least two gas branch passages may include a normally open gas branch passage and a controllable on-off gas branch passage, or may only include a controllable on-off gas branch passage. In other words, at least two gas branch passages may include a normally open gas branch passage and a controllable on-off gas branch passage, or at least two gas branch passages may both be controllable on-off gas branch passages.

[0060] Among them, the normally open gas branch passage refers to a gas branch passage that allows gas to pass through as long as the distribution device is connected to the gas, and the controllable on-off gas branch passage refers to a gas branch passage that can decide whether to allow gas to pass through by a control device when gas is connected to the distribution device.

[0061] In this embodiment, the gas branch passage includes a first gas branch passage 61, a second gas branch passage 62, and a third gas branch passage 63, wherein the first gas branch passage 61 and the third gas branch passage 63 are controllable on / off gas branch passages, and the second gas branch passage 62 is a normally on gas branch passage.

[0062] In one embodiment, the gas branch passages only include controllable on-off gas branch passages, and the user can control all segmented passages as needed, thereby meeting the different needs of different users and improving the user satisfaction of the distribution device.

[0063] The throat is arranged at the connection between the front main gas passage and the gas branch passage, and is used to adjust the pressure in the rear gas passage, more specifically, to control the uniformity of the pressure in each segmented cavity formed by the gas branch passage and the rear main gas passage, that is, to control the uniformity of the pressure in the passage from the gas branch passage to the nozzle.

[0064] The number of nozzles in each nozzle group is different, and the throat diameters of each gas branch passage corresponding to each nozzle group are also different.

[0065] The diameter of the throat is directly proportional to the number of nozzles in the nozzle group corresponding to the gas branch passage.

[0066] The control device of the above-mentioned controllable on-off gas branch passage may be a control valve.

[0067] That is, the control valve is used to control the on-off of each gas branch passage, and can be set at the connection between the gas branch passage and the front gas main passage, and the on-off of the gas branch passage is controlled by controlling the on-off of the throat.

[0068] In this embodiment, the control valve includes a first control valve 121 for controlling the first gas branch passage 61 and a second control valve 122 for controlling the third gas branch passage 63. When the first control valve 121 is opened, the first gas branch passage 61 is connected to the front and rear gas main passages, and the gas enters the first gas branch passage 61 through the first throat 81 and is transported to the first group of nozzles 11 on the rear gas main passage; when the second control valve 122 is opened, the third gas branch passage 63 is connected to the front and rear gas main passages, and the gas enters the third gas branch passage 63 through the third throat 83 and is transported to the third group of nozzles 13 on the rear gas main passage.

[0069] In this example, the second gas branch passage 62 is not provided with a control valve to control its on and off, that is, the second gas branch passage 62 is a normally open gas branch passage. As long as the distribution device is connected to the gas, the gas will enter the second gas branch passage 62 through the second throat 82 and be transported to the second group of nozzles 12.

[0070] In this embodiment, the number of nozzles in the first group of nozzles 11 is 3; the number of nozzles in the second group of nozzles 12 is 4; the number of nozzles in the third group of nozzles 13 is 5. The number of nozzles can be changed as needed.

[0071] In one embodiment, the control valve is a solenoid valve.

[0072] Among them, the front main gas passage, the rear main gas passage, the gas branch passage and the throat are an integrated structure, which can further reduce the risk of gas leakage. Reducing gas leakage also ensures the stability of the pressure in the entire gas passage, which is beneficial to maintaining the stability of the combustion conditions.

[0073] Taking the water heater as an example, it can be understood that when there is only one gas branch passage to supply gas, all nozzles are involved in use, causing all fire bars to burn, and the minimum heat load is the sum of the minimum heat loads of all fire bars. The total heat load is large, the minimum temperature rise is high, and the water outlet temperature is high when the user uses it in summer; at least two gas branch passages are arranged on the gas distribution device of the present invention, and the number of nozzles participating in the combustion can be controlled by a control valve, thereby reducing the minimum heat load and the minimum temperature rise, which can effectively solve the problem of hot water being too hot in summer; similarly, it can also solve the problem of repeated starting and stopping when using an atmospheric heater for heating in winter, the gas consumption is increased, the temperature in the room fluctuates up and down, and the comfort level is reduced.

[0074] That is to say, in the embodiment of the present invention, the atmospheric gas heating furnace or water heater can implement group control on the nozzles through the gas distribution device, thereby implementing group control on the combustion of the fire grate, which can improve the heat load regulation ratio and stabilize the combustion condition.

[0075] In one embodiment, the gas distribution device can achieve a heat load adjustment ratio of 1:5, reducing the minimum heat load and the minimum temperature rise, thereby avoiding user complaints about frequent starts and stops in winter and domestic hot water in summer.

[0076] The gas distribution device in the embodiment of the present invention can improve the heat load regulation ratio of the burner through a controllable segmented design. Through the design of the throat, the pressure in each segmented cavity can be balanced, thereby ensuring the stability of the combustion condition and reducing the risk of gas leakage. The front main gas passage, the rear main gas passage, the gas branch passage and the throat can be an integrated structure, which can further reduce the risk of gas leakage and thereby ensure the stability of the pressure in the entire gas passage, which is beneficial to maintaining the stability of the combustion condition. It can be understood that when gas is connected to the distribution device through the front gas main passage 2, it is transported to the nozzles on the rear gas main passage 4 through the gas branch passage. Since the number of nozzles in each group on the rear gas main passage 4 is inconsistent, if only the gas branch passage with the same pipe diameter is used to transport the gas, the gas pressure in the segmented cavity with a large number of nozzles will be lower and the gas output from this group of nozzles will be in a deficit state during combustion, making the combustion condition unstable. The gas pressure in the segmented cavity with a small number of nozzles is higher and the gas output from this group of nozzles is in an excess state during combustion. Therefore, there is a risk that the gas cannot participate in the combustion in time and has overflow leakage. In order to adjust the gas pressure in the passage, even the gas pressure in each segmented cavity, more specifically, to adapt to the needs of different numbers of nozzles and balance the uniformity. The air pressure in each partition cavity between the nozzles of the gas branch passage to the rear gas main passage 4, after the gas ratio regulating valve and the control valve, more precisely, the uniformity of the air pressure in each segmented passage after the regulating control valve, a throat is set at the connection between the gas branch passage and the front gas passage 2, and the diameter of the throat can be adapted to the number of nozzles corresponding to the segmented passage, and the trend of change in the size of the throat diameter is consistent with the trend of change in the number of nozzles in the nozzle group, that is, the diameter of the throat is directly proportional to the number of nozzles in the nozzle group corresponding to the gas branch passage. It can be imagined that when the diameter of the throat becomes larger, the air pressure in the subsequent segmented passage will also increase, and then it can adapt to the nozzle group with a larger number of nozzles. Conversely, when the diameter of the throat becomes smaller, the air pressure in the subsequent segmented passage will decrease, and then it can adapt to the nozzle group with a small number of nozzles.

[0077] At least two gas branch passages may be connected to the front gas main passage 2 through a throat, and at least two gas branch passages may be arranged in one-to-one correspondence with at least two groups of nozzles.

[0078] In one embodiment, a gas distribution device further includes a sealing baffle 14, which, when in use, can cooperate with the burner air chamber cavity to seal the air chamber; preferably, the sealing baffle 14 is provided with a sealing strip 16 for sealing the gap with the burner air chamber cavity.

[0079] In one embodiment, a method for producing a gas distribution device can be applied to the production of any of the above-mentioned gas distribution devices. In this embodiment, a front main gas passage, a rear main gas passage, at least two gas branch passages, and a throat are integrally die-cast, wherein at least two groups of nozzles are provided on the rear main gas passage, which can be grouped nozzles directly processed on the rear main gas passage, or the rear main gas passage can be processed with a separated and segmented chamber and a nozzle mounting structure, so that the nozzles can be installed through the nozzle mounting structure and the nozzles can be grouped using the separated and segmented chamber processed on the rear main gas passage, and a control valve mounting structure is provided at the connection between at least one of the gas branch passages and the front main gas passage for installing a control valve.

[0080] It can be understood that after the diameter of the throat is reasonably set according to a certain proportion to reduce the risk of gas leakage, the gas distribution device is die-cast in one piece, which can further reduce the risk of gas leakage and enable the air pressure in each segmented cavity to remain relatively stable, which is more conducive to ensuring the stability of the combustion conditions.

[0081] It can be understood that the gas distribution device is integrally die-cast, and the segmented solenoid valve and the gas distribution device form an organic whole. The segmentation is realized by setting a segmented control valve, and modular management can be realized; the gas distribution device is provided with a sealing baffle, and a sealing strip is affixed to the sealing baffle, which is directly matched with the air chamber cavity to achieve the sealing of the air chamber. The structure is simple, easy to produce and assemble, and improves production efficiency; each branch passage of the gas distribution device is provided with a throat for controlling the pressure balance of each segmented cavity, and the diameter of each throat is set according to a certain ratio to ensure the pressure uniformity between each cavity during combustion in different segments; the advantages of the burner including any of the above-mentioned gas distribution devices are also enhanced.

[0082] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A gas distribution device, It is characterized in that include: The front main gas passage is used to introduce gas; A rear main gas passage, wherein at least two groups of nozzles are provided on the rear main gas passage, and the number of nozzles in each group of nozzles is different; At least two gas branch passages are arranged in parallel and connected to the front and rear gas main passages, and are used to transport gas to the at least two groups of nozzles; The throat is provided at the connection between the front main gas passage and the gas branch passage, and is used to adjust the pressure of the gas passage from the gas branch passage to the nozzle. The throat diameters of the nozzles in each group corresponding to each gas branch passage are different, and the diameter of the throat is adapted to the number of nozzles in the nozzle group corresponding to the gas branch passage; Control valve, used to control the on and off of each gas branch passage; Among them, the front main gas passage, the rear main gas passage, the gas branch passage and the throat are an integrated structure.

2. A gas distribution device according to claim 1, It is characterized in that The diameter of the throat is directly proportional to the number of nozzles in the nozzle group corresponding to the gas branch passage.

3. A gas distribution device according to claim 1, It is characterized in that The at least two gas branch passages are arranged in one-to-one correspondence with the at least two groups of nozzles.

4. A gas distribution device according to claim 1, It is characterized in that The at least two gas branch passages include: a normally open gas branch passage and a controllable on / off gas branch passage; or, the at least two gas branch passages are both controllable on / off gas branch passages.

5. A gas distribution device according to claim 4, It is characterized in that The control valve is arranged at the connection between the gas branch passage and the front gas main passage, and controls the on-off of the gas branch passage by controlling the on-off of the throat pipe.

6. A gas distribution device according to claim 1, It is characterized in that The control valve is a solenoid valve.

7. A gas distribution device according to any one of claims 1 to 6, It is characterized in that Also includes: The sealing baffle plate arranged on the gas branch passage is used to cooperate with the burner air chamber cavity to seal the air chamber.

8. A gas distribution device according to claim 7, It is characterized in that The sealing baffle is provided with a sealing strip for sealing.

9. A gas distribution device according to any one of claims 1 to 6, It is characterized in that The front main gas passage, the rear main gas passage, at least two gas branch passages, and the throat are an integrated die-casting structure; A control valve installation structure is provided at the connection between at least one of the gas branch passages and the front gas main passage for installing the control valve.

10. A burner, It is characterized in that It comprises the gas distribution device as described in any one of claims 1-9.

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