Fuel gas distribution device and burner applying same

Abstract

The invention discloses a fuel gas distribution device and a burner applying the same, and the distribution device comprises a front fuel gas main passage used for introducing fuel gas; the rear gas main passage is provided with at least two groups of nozzles; the at least two gas branch passages are arranged in parallel, are communicated with the front gas main passage and the rear gas main passage, and are used for conveying gas to the at least two groups of nozzles; the throat pipe is arranged at the joint of the front gas main passage and the gas branch passage and is used for adjusting the pressure of the gas passage between the gas branch passage and the nozzle; and the control valve is used for controlling the on-off of each gas branch passage. According to the gas distribution device, grouping control of the nozzles can be achieved, the thermal load regulation ratio is increased, the distribution device can adapt to changes of the number of the nozzles in different sections due to the design of the throat pipe, the stability of the combustion working condition can be guaranteed, the risk of gas leakage is reduced, and the adaptability of the device is improved.

Description

[0001] This application is a divisional application of the invention patent entitled "A gas distribution device and a burner using the same", with application number CN202110937095.X. The application date of the parent case is August 16, 2021. Technical Field

[0002] 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

[0003] The gas distribution devices of the burners of existing atmospheric gas heating furnaces or water heaters are mostly made of square tubes welded and sprayed, or processed and produced by aluminum alloy profiles. The gas distribution devices themselves do 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.

[0004] It is understandable that the burner gas distribution device 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, in order to ensure combustion stability, the heat load cannot be further reduced.

[0005] 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 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.

[0006] 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.

[0007] Chinese patent application number CN200920265366.6 discloses a gas distribution device comprising a gas valve body, a main gas channel disposed 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 a monolithic burner. The device is characterized in that the gas valve body is further provided with at least one second gas channel independently disposed 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 via a fourth gas channel, and a control valve is provided between the fourth gas channel and the main gas channel to control the connection and disconnection of the second 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, and lower the minimum temperature rise, thereby solving the problem of scalding water in the summer.

[0008] Chinese patent application number CN201811102689.3 discloses a multi-stage segmented solenoid valve switch, comprising an airway, an air inlet nozzle mounted at one end of the airway, a solenoid valve mounted on the airway, a valve core mounted at the other end of the airway, three air outlets mounted on the valve core, a mounting body mounted at one end of the valve core, and a microswitch mounted on the mounting body. This multi-stage segmented solenoid valve switch can control the gas flow rate at any time, with one, two, or three holes. One hole controls low heat, two holes control medium heat, and three holes control high heat, making it easy to control and more energy-efficient and environmentally friendly.

[0009] Although the technical solutions in the above patents can improve the heat load adjustment ratio, they do not discuss the problems that may arise when the number of burner pieces or the number of air outlets changes, such as poor combustion condition stability, gas leakage safety hazards, and poor device adaptability.

[0010] In view of this, the present invention is proposed. Summary of the Invention

[0011] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide a gas distribution device and a burner using the same, which can not only improve the heat load adjustment 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.

[0012] To achieve the above-mentioned object, a first aspect of the present invention provides a gas distribution device, comprising: a front main gas passage for introducing 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 main gas passages, and are used to deliver gas to the at least two groups of nozzles;

[0015] The throat pipe is located at the junction of 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 pipe.

[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 pipe is directly proportional to the number of nozzles in the nozzle group corresponding to the gas branch passage.

[0021] Furthermore, the at least two branch gas passages are arranged in a 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 pipe.

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

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

[0026] Furthermore, the front main gas passage, the rear main gas passage, at least two branch gas passages, and the throat pipe are an integral die-cast 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 objectives, the 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; the sealing baffle cooperates with the burner air chamber cavity to seal the air chamber.

[0030] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0031] 1. The setting of the throat pipe makes the gas volume in the segmented cavity adapt to the number of corresponding nozzle groups, 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;

[0032] 2. The integrated processing of the main functional modules can further reduce the risk of gas leakage and ensure the stability of combustion conditions;

[0033] 3. The controllable segmented design controls the number of nozzles involved in combustion, thereby improving the heat load adjustment ratio of the burner. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] 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 undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings:

[0035] Figure 1 This is a structural schematic diagram of a fuel distribution device according to an embodiment of the present invention;

[0036] Figure 2 for Figure 1 A front view of a fuel distribution device;

[0037] Figure 3 for Figure 1 A top view of a fuel distribution device;

[0038] Figure 4 for Figure 1 A left side view of a fuel distribution device;

[0039] Figure 5 for Figure 1 A right side view of a fuel distribution device;

[0040] Figure 6 for Figure 1 A cross-sectional view of a fuel distribution device.

[0041] 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 pipe; 82, second throat pipe; 83, third throat pipe; 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.

[0042] 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 rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0043] 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.

[0044] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0045] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0046] In order to enable technical personnel to have an overall understanding of this 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 different groups of nozzle gas paths, 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, and the rear gas main passage can be used to install nozzles 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 control of the gas branch passage is carried out by controlling the on-off of the throat pipe at the connection between the front main gas passage and the branch passage, thereby controlling the on-off of the gas branch passage, and then controlling the on-off of the gas of different groups of nozzles, thereby controlling 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 pipe diameter will cause the pressure uniformity of the cavity of each segmented passage to become worse, the combustion to become more unstable, and the adaptability of the product to become worse. Therefore, the present invention provides a throat pipe at the connection between each branch passage and the front main gas passage. The throat pipe diameter of the branch passage is adapted to the number of nozzles corresponding to the gas branch passage, can be set according to a certain ratio, and the diameter can be different, so as to ensure uniform pressure in each segmented cavity, specifically, to ensure uniform pressure in the passage from the gas branch passage to the nozzle after the throat pipe.

[0047] The gas distribution device obtained according to the above design principle can not only improve the heat load regulation ratio, but also evenly distribute 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.

[0048] like Figure 1 As shown, Figure 1 This 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 a nozzle 10 is provided on the rear main gas passage 4.

[0049] Specifically, Figures 2 to 6 Can be Figure 1 The embodiment of the present invention is a front view, a top view, a left view, a right view and a cross-sectional view of a fuel distribution device.

[0050] 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.

[0051] The rear main gas passage 4 is provided with nozzles, which are grouped. In order to meet the needs of group and segment control, at least two groups of nozzles are provided thereon.

[0052] The nozzle can be installed on the rear main gas passage 4 through a mounting structure, or can be directly machined on the rear main gas passage 4.

[0053] As for the grouping of the nozzles, the distribution device can be made into an immutable partition on the cavity of the rear main gas passage 4 before leaving the factory so as to separate the chamber of the rear main gas passage, and then group the nozzles arranged on the rear main gas passage. 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.

[0054] 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.

[0055] 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.

[0056] At least two gas branch passages are arranged in a 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.

[0057] At least two gas branch passages may include a normally open gas branch passage and a controllable on-off gas branch passage, or only include a controllable on-off gas branch passage. That is to say, 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 be controllable on-off gas branch passages.

[0058] 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. 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.

[0059] 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 gas branch passages, and the second gas branch passage 62 is a normally open gas branch passage.

[0060] In one embodiment, the gas branch passages only include controllable on-off gas branch passages, and users can control all segmented passages as needed, thereby meeting the different needs of different users and improving the user satisfaction of the distribution device.

[0061] The throat is located 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, it is used 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.

[0062] 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.

[0063] The diameter of the throat pipe is directly proportional to the number of nozzles in the nozzle group corresponding to the gas branch passage.

[0064] The control device for the above-mentioned controllable on-off gas branch passage may be a control valve.

[0065] 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.

[0066] 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 pipe 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 pipe 83 and is transported to the third group of nozzles 13 on the rear gas main passage.

[0067] 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 pipe 82 and be transported to the second group of nozzles 12.

[0068] In this embodiment, the number of nozzles in the first nozzle group 11 is 3; the number of nozzles in the second nozzle group 12 is 4; the number of nozzles in the third nozzle group 13 is 5. The number of nozzles can be changed as needed.

[0069] In one embodiment, the control valve is a solenoid valve.

[0070] 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.

[0071] 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 during use, causing all fire bars to burn, and its minimum heat load is the sum of the minimum heat loads of all fire bars. The total heat load is large, and the minimum temperature rise is high. When users use it in summer, the water outlet temperature is high; at least two gas branch passages are provided on the gas distribution device of the present invention, and the number of participating combustion nozzles can be controlled by the 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, which increases gas consumption, and the temperature in the room fluctuates up and down, reducing comfort.

[0072] 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 performing group control on the combustion energy of the fire grate, thereby improving the heat load regulation ratio and stabilizing the combustion condition.

[0073] 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 scalding domestic hot water in summer.

[0074] The gas distribution device of the embodiment of the present invention can improve the heat load adjustment ratio of the burner through a controllable segmented design. Through the design of the throat pipe, the pressure in each segmented cavity can be balanced, thereby ensuring the stability of the combustion conditions and reducing the risk of gas leakage. The front main gas passage, the rear main gas passage, the gas branch passage and the throat pipe 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 conditions. 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 gas branch passages with the same pipe diameter are used to transport 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. For the segmented cavity with a small number of nozzles, the gas pressure in the segmented cavity is higher and the gas output from this group of nozzles is in a surplus state during combustion. Therefore, there is a risk that the gas cannot participate in combustion in time and there is a risk of overflow and leakage. In order to adjust the gas pressure in the passage, evenly distribute the gas pressure in each segmented cavity, more specifically, to adapt to the needs of different numbers of nozzles and balance the gas uniformly. The air pressure in each partition cavity between the gas branch passage and the nozzles of the rear gas main passage 4, after the gas proportion 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. 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 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 decreases, and it can adapt to the nozzle group with a small number of nozzles.

[0075] 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 a one-to-one correspondence with at least two groups of nozzles.

[0076] 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.

[0077] 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, the front main gas passage, the rear main gas passage, at least two gas branch passages, and the throat are integrally die-cast.

[0078] 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 into an integral form, 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.

[0079] 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. Whether to segment is determined by setting a segmented control valve, and modular management can be achieved; the gas distribution device is provided with a sealing baffle, and a sealing strip is affixed to the sealing baffle. By directly cooperating with the air chamber cavity, the air chamber is sealed. The structure is simple, easy to produce and assemble, and production efficiency is improved; each branch passage of the gas distribution device is provided with a throat pipe for controlling the pressure balance of each segmented cavity, and the diameter of each throat pipe 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.

[0080] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments using the above technical content without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A gas distribution device, characterized in that: include: The front main gas passage is used to introduce gas; a rear main gas passage, wherein the rear main gas passage is provided with at least two groups of nozzles, each group of nozzles having a different number of nozzles; At least two gas branch passages are arranged in parallel and connected to the front and rear main gas passages, and are used to deliver gas to the at least two groups of nozzles; The throat pipe is located 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 between the gas branch passage and the nozzle. The diameter of the throat pipe corresponding to each gas branch passage of each group of nozzles is different, and the diameter of the throat pipe 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.

2. A gas distribution device according to claim 1, characterized in that: The diameter of the throat pipe 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, characterized in that: The at least two gas branch passages are arranged in a one-to-one correspondence with the at least two groups of nozzles.

4. A gas distribution device according to claim 1, 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, 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 any one of claims 1 to 5, characterized in that: Also includes: The sealing baffle provided on the gas branch passage is used to cooperate with the burner air chamber cavity to seal the air chamber.

7. A gas distribution device according to claim 6, characterized in that: The sealing baffle is provided with a sealing strip for sealing.

8. A gas distribution device according to any one of claims 1 to 5, characterized in that: The control valve is a solenoid valve.

9. A burner, characterized in that: The invention comprises the gas distribution device according to any one of claims 1 to 8.

10. A method for producing a gas distribution device, applicable to the production of the gas distribution device according to any one of claims 1 to 8, comprising: The front main gas passage, the rear main gas passage, at least two gas branch passages, and the throat are integrally die-casted; The rear main gas passage is directly processed to form grouped nozzles; or the rear main gas passage is processed with a chamber and a nozzle mounting structure after separation and segmentation, and the nozzles are mounted through the nozzle mounting structure and the nozzles are grouped using the chamber after separation and segmentation processed on the rear main gas passage; 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 a control valve.

Images