A gas distributor, a burner device and a gas water heater

Abstract

This application belongs to the technical field of gas water heaters, and discloses a gas distributor, a burner device, and a gas water heater. The gas distributor includes a distribution plate, nozzles, and a cover plate. The distribution plate has a gas flow channel, and the cover plate is sealed and fixed to the distribution plate and covers the gas flow channel. The distribution plate has a gas distribution outlet and a gas distribution inlet extending through its thickness direction. The two are located at the upper and lower parts of the distribution plate, respectively, and are both connected to the gas flow channel. A nozzle is installed at each gas distribution outlet. This design, by setting both the gas distribution outlet and the gas distribution inlet to extend horizontally, eliminates the need to reserve installation dimensions for the gas distribution outlet and gas distribution inlet in the height space of the distribution plate, which can reduce the size of the gas distributor in the height direction to a certain extent. By using the cover plate to seal the gas flow channel to form a gas supply channel, the manufacturing process of the gas distributor can be simplified, while reducing the size of the gas distributor in the thickness direction.

Description

Technical Field

[0001] This application relates to the field of gas water heater technology, specifically to a gas distributor, a burner device, and a gas water heater. Background Technology

[0002] A gas water heater is a gas appliance that uses gas as fuel to produce hot water through combustion. A gas water heater mainly consists of a burner, a heat exchanger, a gas supply system, and a water supply system. The gas supply system provides air and gas to the burner; when mixed and ignited within the burner, the gas heats the heat exchanger. The water supply system supplies cold water to the heat exchanger and then delivers the heated water to the water system to meet user needs.

[0003] The burner devices in related technologies mainly include a burner and a gas distributor. The burner has a premixing channel, and the gas distributor is used to connect the gas pipeline and the burner, and to supply gas to the burner. However, the gas distributors in related technologies have a large structural size, occupy a lot of space, and have high requirements for installation space.

[0004] This section provides background information related to this application, which is not necessarily prior art. Utility Model Content

[0005] The purpose of this application is to solve or at least alleviate some or all of the aforementioned problems. Therefore, the purpose of this application is to provide a gas distributor, a burner device, and a gas water heater, wherein the gas distributor has small dimensions in both the height and thickness directions, resulting in a small overall size and suitability for applications with limited installation space.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] In a first aspect, this application provides a gas distributor, comprising:

[0008] A distribution plate is provided with a gas flow channel. The distribution plate has a gas distribution outlet and a gas distribution inlet that extend through its thickness direction. The gas distribution outlet and the gas distribution inlet are located at the upper and lower parts of the distribution plate, respectively, and are both connected to the gas flow channel. The gas distribution inlet is configured to connect to a gas proportional valve.

[0009] The nozzle is installed at each of the gas distribution outlets and is configured to inject gas from the gas flow channel into the burner.

[0010] A cover plate, which is sealed and fixed to the distribution plate and covers the gas flow channel.

[0011] As an optional embodiment of the gas distributor, the distribution plate includes a plate body and partitions. The plate body is provided with the gas flow channel, and a plurality of partitions are arranged vertically in the gas flow channel to divide the gas flow channel into at least two diversion slots arranged along the left and right directions of the plate body, and adjacent two diversion slots are not connected to each other.

[0012] As an optional embodiment of the gas distributor, the plate body includes a first part and a second part. The first part extends horizontally in the left-right direction and has a gas distribution outlet. The second part extends vertically and has a gas distribution inlet at the end of the second part away from the first part.

[0013] As an alternative to the gas distributor, in each of the diversion channels, the number of gas distribution inlets is one, and the number of gas distribution outlets is at least two.

[0014] As an alternative to the gas distributor, the orifice area of ​​a single gas distribution inlet is larger than the orifice area of ​​a single gas distribution outlet.

[0015] Secondly, this application provides a burner device, including a housing, a burner, and a gas distributor as described in any of the preceding claims, wherein the burner is fixed inside the housing and has a premixing channel inside the burner, the gas distributor is fixed to the housing, and the nozzle is inserted into the premixing channel, and the gas distribution inlet is located outside the bottom of the housing.

[0016] As an optional solution for the burner device, the front side of the burner is provided with a receiving groove, the distribution plate is fixed to the outer casing, and the upper part of the distribution plate is accommodated in the receiving groove.

[0017] As an alternative to the burner device, the front side of the housing has a clearance slot opposite to the receiving groove, and the cover plate is fixed to the housing and covers the clearance slot.

[0018] As an alternative to the burner device, the burner device further includes an ignition assembly, the housing is arranged above the burner to form a combustion chamber, the ignition assembly is fixed to the housing, and a portion of the ignition assembly is located within the combustion chamber.

[0019] Thirdly, this application provides a gas water heater, including a fan, a gas proportional valve, and a burner device as described in any of the preceding claims, wherein the fan is used to supply air to the burner device, and the gas proportional valve is configured to be connected to a gas pipeline and used to supply gas to the burner device.

[0020] The beneficial effects of this application are as follows:

[0021] The gas distributor provided in this application reduces the height dimension of the gas distributor to a certain extent by setting both the gas distribution outlet and the gas distribution inlet to extend horizontally, eliminating the need to reserve installation dimensions for the gas distribution outlet and the gas distribution inlet in the height space of the distribution plate. By setting a gas flow channel on the distribution plate and sealing the gas flow channel with a cover plate to form a gas supply flow channel, the manufacturing process of the gas distributor can be simplified, and the thickness dimension of the gas distributor can be reduced, making the overall size smaller and suitable for occasions with limited installation space.

[0022] The burner device provided in this application, by applying the aforementioned gas distributor, facilitates the rational layout of the various components, making the burner device smaller in the height direction.

[0023] The gas water heater provided in this application, by applying the above-mentioned burner device, makes the overall size of the gas water heater smaller, and can be used in occasions with limited installation space. Attached Figure Description

[0024] Figure 1 This is a structural diagram of a gas water heater with the front of the casing hidden, provided in an embodiment of this application.

[0025] Figure 2 This is a longitudinal sectional view of a gas water heater provided in an embodiment of this application.

[0026] Figure 3 This is a longitudinal sectional view of the burner device provided in the embodiments of this application.

[0027] Figure 4 This is a longitudinal sectional view of the burner provided in the embodiment of this application.

[0028] Figure 5 This is an exploded view of the burner provided in the embodiments of this application.

[0029] Figure 6 This is a structural diagram of the gas distributor provided in the embodiments of this application.

[0030] Figure 7 This is a structural diagram of the distribution board provided in the embodiments of this application.

[0031] In the picture:

[0032] 1. Housing;

[0033] 2. Burner assembly; 21. Housing; 2101. Air buffer chamber; 2102. Combustion chamber; 211. Air supply interface; 212. Clearance slot;

[0034] 22. Burner; 220. Premixed flow channel; 2201. Air premixed inlet; 2202. Gas premixed inlet; 221. Burner shell; 2210. Receiving groove; 222. Baffle plate; 223. Flow equalization plate; 2231. Flow equalization hole; 224. Burner vent; 2241. Burner hole; 225. Baffle plate;

[0035] 23. Gas distributor; 2301. Gas distribution inlet; 2302. Gas distribution outlet; 231. Distribution plate; 2310. Diversion channel; 2311. Plate body; 23111. First part; 23112. Second part; 2312. Partition; 232. Nozzle; 233. Cover plate;

[0036] 24. Ignition assembly;

[0037] 3. Heat exchanger;

[0038] 4. Fan;

[0039] 5. Gas proportional valve;

[0040] 61. Water inlet connector; 62. Water inlet pipe; 63. Water outlet connector; 64. Water outlet pipe; 65. Water volume servo;

[0041] 7. Gas inlet connector;

[0042] 8. Control system; 81. Main control board; 82. Electrical components;

[0043] 91. Smoke hood; 92. Smoke exhaust pipe. Detailed Implementation

[0044] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0045] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0046] In the description of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] The technical solution of this application will be further described below with reference to the accompanying drawings and specific embodiments.

[0048] like Figures 1 to 2 As shown, this application provides a gas water heater, a gas appliance that uses gas as fuel and produces hot water through combustion heating.

[0049] For ease of description, Figure 1 and Figure 2 The location of the gas water heater is for reference. Figure 1 and Figure 2 The vertical direction of the gas water heater is indicated by its height. Figure 1 The left and right sides refer to the left and right sides of the gas water heater. Figure 1 The side shown in the image is the front of the gas water heater (for reference). Figure 2 The front side), and the side opposite to the front side is the rear side of the gas water heater (see reference). Figure 2 (After). It should be noted that this orientation definition is mainly for the convenience of describing the technical solution of this application and should not be used as a limitation on the technical solution of this application.

[0050] Continue as Figure 1As shown, the gas water heater provided in this application includes a casing 1, a burner device 2, a heat exchanger 3, a fan 4, and a gas proportional valve 5. The casing 1 has a receiving cavity, within which the burner device 2, heat exchanger 3, fan 4, and gas proportional valve 5 are all installed. The burner device 2 has an air supply interface 211 and a gas supply interface. The heat exchanger 3 is located above the burner device 2. The fan 4 and gas proportional valve 5 are arranged side-by-side in a left-right direction and located below the burner device 2. The air outlet of the fan 4 is connected to the air supply interface 211 to control the air supply. The gas proportional valve 5 is used to connect the gas pipeline and the gas supply interface to control the gas supply. This arrangement fully utilizes the internal space of the receiving cavity, improving space utilization and making the gas water heater more compact and smaller in size, reducing space occupation and making it suitable for smaller installation spaces. In addition, the supply of air and gas can be controlled by the fan 4 and the gas proportional valve 5 to ensure that air and gas can be supplied to the burner device 2 according to the preset air-fuel ratio. The appropriate air-fuel ratio helps to improve the combustion efficiency of the gas.

[0051] The working principle of this gas water heater is roughly as follows: the fan 4 supplies air to the burner device 2, and the gas in the gas pipeline enters the burner device 2 through the gas proportional valve 5. After the gas mixes with the air, it is ignited and burned. The flame of combustion heats the heat exchanger 3, so that the cold water in the heat exchanger 3 reaches the required temperature to meet the user's water demand. In other words, the fan 4 and the gas proportional valve 5 constitute the gas supply device in the relevant technology.

[0052] In addition, the gas water heater also includes an inlet connector 61 and an outlet connector 63. The inlet connector 61 is fixed to the bottom wall of the casing 1 and is connected to the inlet of the heat exchanger 3 via an inlet pipe 62. The outlet connector 63 is fixed to the bottom wall of the casing 1 and is connected to the outlet of the heat exchanger 3 via an outlet pipe 64. The outlet pipe 64 and the inlet pipe 62 are located on the left and right sides of the heat exchanger 3, respectively, to make full use of the housing space of the casing 1.

[0053] In some embodiments, the gas water heater also includes a water flow server 65, which precisely controls the amount of water flowing to the heat exchanger 3 to solve the problem of fluctuating water temperature in the gas water heater.

[0054] Furthermore, the gas water heater also includes a gas inlet connector 7, which is fixed to the bottom wall of the casing 1 and used to connect to the gas proportional valve 5, and is located between the water inlet connector 61 and the water outlet connector 63. This arrangement not only makes full use of the bottom wall space of the casing 1, but also shortens the distance between the gas inlet connector 7 and the gas proportional valve 5, shortening the length of the connecting pipe between them, which not only reduces material costs, but also reduces the space occupied by the connecting pipe in the housing cavity.

[0055] In some embodiments, the gas water heater further includes a control system 8, which includes a main control board 81 and electrical components 82. The main control board 81 is fixed to the housing cavity and located on the side of the heat exchanger 3 adjacent to the inlet pipe 62. The electrical components 82 are fixed to the surface of the main control board 81 facing away from the heat exchanger 3. This orientation arrangement can make full use of the housing cavity space of the casing 1. On the other hand, placing the main control board 81 near the lower-temperature inlet pipe 62 not only keeps it away from the higher-temperature outlet pipe 64, reducing the impact of the water temperature in the outlet pipe 64 on the main control board 81, but also allows the cold water in the inlet pipe 62 to generate a certain amount of cold radiation to the main control board 81. When the temperature of the main control board 81 is high, the heat of the main control board 81 will be transferred and radiated in the direction of the inlet pipe 62, which is beneficial to the heat dissipation of the main control board 81.

[0056] Furthermore, the main control board 81 is fixed to the upper right of the receiving cavity. The height of the main control board 81 is greater than the height of the heat exchanger 3. The main control board 81 is located on the right side of the heat exchanger 3 and extends to the position opposite to the burner device 2. That is, the main control board 81 is arranged to the left and right of the heat exchanger 3 and the burner device 2.

[0057] In order to exhaust the exhaust gas generated by gas combustion, the gas water heater also includes a smoke hood 91 and a smoke exhaust pipe 92. The smoke exhaust pipe 92 is used to connect the public smoke exhaust system pipeline and the smoke hood 91. The smoke hood 91 is located above the heat exchanger 3 and is used to collect the exhaust gas to ensure that all the exhaust gas can be discharged from the smoke exhaust pipe 92 to the public smoke exhaust system pipeline, reducing or even avoiding smoke leakage problems and improving the user experience.

[0058] It is worth noting that the heat exchanger 3, fan 4, gas proportional valve 5, and water flow servo 65 in this application can all be existing conventional products, and will not be described in detail here.

[0059] In addition to the aforementioned rational arrangement of the various components, the structure of the burner device 2 can be optimized to make it more compact and smaller, thereby achieving a smaller overall size for the gas water heater and meeting market demands for smaller installation spaces. The specific structure of the burner device 2 will be described below.

[0060] like Figures 2 to 3As shown, the burner device 2 includes a housing 21 and a burner 22. The bottom of the housing 21 has an air supply interface 211. The burner 22 is fixed inside the housing 21, dividing the internal space of the housing 21 into an upper cavity and a lower cavity. The upper cavity forms a combustion chamber 2102, and the lower cavity forms an air buffer cavity 2101, which is connected to the air supply interface 211. This design directly forms the air supply interface 211 at the bottom of the housing 21 and the air buffer cavity 2101 and combustion chamber 2102 inside the housing 21. The housing 21 can also serve as the mounting base for the burner 22, thus making the overall structure of the burner device 2 more compact and smaller in size.

[0061] The burner device 2 also includes an ignition assembly 24, which is fixed to the housing 21, with a portion of the ignition assembly 24 located within the combustion chamber 2102. The ignition assembly 24 is used to ignite the gas entering the combustion chamber 2102. It is worth noting that the ignition assembly 24 can be a conventional ignition product, which will not be described in detail here.

[0062] like Figures 4 to 5 and combined Figure 3 As shown, the burner 22 includes a burner housing 221 and baffles 222. Several baffles 222 are fixed inside the burner housing 221 and form an S-shaped premixing channel 220 with a flow path. The S-shaped premixing channel 220 can construct a premixing channel 220 with a relatively small height space, thereby reducing the height dimension of the burner housing 221 to a certain extent, making the structure of the burner 22 more compact and the size smaller.

[0063] In addition, the premixed flow channel 220 has an air premixed inlet 2201 and a gas premixed inlet 2202. Air enters the premixed flow channel 220 from the air premixed inlet 2201, and gas enters the premixed flow channel 220 from the gas premixed inlet 2202. The air and gas are fully mixed in the S-shaped premixed flow channel 220 to improve the combustion efficiency of the gas, reduce the generation of carbon monoxide and nitrogen monoxide, and ensure complete combustion of the gas.

[0064] The air premixing inlet 2201 is connected to the air buffer chamber 2101, which is connected to the air supply interface 211. The fan 4 is connected to the air supply interface 211. When air needs to be supplied, the fan 4 starts, supplying air from the outside environment into the air buffer chamber 2101. The air in the air buffer chamber 2101 then enters the premixing channel 220 through the air premixing inlet 2201.

[0065] The burner unit 2 also includes a gas distributor 23, which is installed on the housing 21. The gas distributor 23 has a gas distribution inlet 2301 and a gas distribution outlet 2302. The gas distribution outlet 2302 is connected to the gas premixing inlet 2202. The gas distribution inlet 2301 forms a gas supply interface and is connected to the gas proportional valve 5. When gas is needed, the gas proportional valve 5 opens, and the gas in the gas pipeline enters the gas distributor 23 through the gas proportional valve 5, the gas distribution inlet 2301, the gas distribution outlet 2302, and the gas premixing inlet 2202, and then enters the premixing channel 220.

[0066] The premixed flow channel 220 is S-shaped. The air premixing inlet 2201 is located at the bottom of the burner 22 and at the beginning of the premixed flow channel 220. The gas premixing inlet 2202 is located downstream of the air premixing inlet 2201 and at the bend of the premixed flow channel 220. This arrangement ensures that the gas and air can enter the rear half of the premixed flow channel 220 precisely in the required ratio and be fully mixed within the premixed flow channel 220, thus ensuring combustion efficiency and combustion quality.

[0067] The burner housing 221 has a receiving groove 2210 on its front side, and the outer casing 21 has a clearance slot 212 corresponding to the receiving groove 2210 on its front side. The gas distributor 23 is fixed to the outer casing 21 and covers the clearance slot 212, with a portion of the gas distributor 23 located within the receiving groove 2210. This arrangement makes the overall structure of the burner device 2 more compact, smaller, and more regular, thereby improving the space utilization of the housing 1's receiving cavity.

[0068] Furthermore, compared to installing the gas distributor 23 below the burner 22, this layout can reduce the overall height dimension of the burner device 2. After the gas distributor 23 is installed on the burner 22, the outer surface of the gas distributor 23 is roughly flush with the outer surface of the outer casing 21, which makes it easier to install the entire burner device 2 into the receiving cavity of the casing 1. At the same time, it is beneficial to make the appearance of the gas water heater flat, which makes it easier to install the gas water heater on a flat wall or flat cabinet.

[0069] The burner 22 also includes a flow equalization plate 223 and a flame bar 224. The flow equalization plate 223 has flow equalization holes 2231, and the flame bar 224 has flame holes 2241. The area of ​​a single flow equalization hole 2231 is larger than the area of ​​a single flame hole 2241. The flow equalization plate 223 and the flame bar 224 are both fixed to the top of the burner housing 221, and the flame bar 224 is located above the flow equalization plate 223.

[0070] In some embodiments, the burner 22 further includes baffles 225, a plurality of baffles 225 being installed within the burner housing 221 for dividing the premixing channel 220 into at least two sub-channels. For example, in Figure 4 and Figure 5 In the middle, a baffle 225 is installed inside the burner housing 221 to divide the premixed flow channel 220 into two flow channels, referred to as the left flow channel and the right flow channel respectively.

[0071] like Figures 6 to 7 and combined Figure 3 As shown, the gas distributor 23 includes a distribution plate 231, a nozzle 232, and a cover plate 233. The distribution plate 231 is installed on the housing 21 and has a gas flow channel. The upper part of the distribution plate 231 is housed in the receiving groove 2210. The nozzle 232 is installed on the distribution plate 231 and communicates with the gas flow channel. The outlet end of the nozzle 232 is inserted into the gas premixing inlet 2202. The cover plate 233 is sealed and fixed to the distribution plate 231 and covers the gas flow channel. In addition, the cover plate 233 is fixedly connected to the housing 21 and covers the clearance slot 212.

[0072] In some embodiments, the distribution plate 231 is provided with a gas distribution outlet 2302 and a gas distribution inlet 2301 communicating with the gas flow channel. The gas distribution outlet 2302 and the gas distribution inlet 2301 penetrate the thickness of the distribution plate 231 and extend in the horizontal front-back direction. The gas distribution outlet 2302 is located at the upper part of the distribution plate 231 and is used to install a nozzle 232. The outlet end of the nozzle 232 is inserted into the gas premixing inlet 2202. The gas distribution inlet 2301 is located at the lower part of the distribution plate 231 and is used to communicate with the gas proportional valve 5. Gas enters the premixing flow channel 220 through the nozzle 232, which can increase the gas flow velocity. Simultaneously, the high-speed gas flow can, to a certain extent, carry the air below at high speed, thus not only increasing the flow velocity of the gas and air but also improving the mixing efficiency of the gas and air.

[0073] The gas distributor 23 provided in this application reduces the size of the gas distributor 23 in the height direction to a certain extent by setting both the gas distribution outlet 2302 and the gas distribution inlet 2301 to extend horizontally, without reserving installation dimensions for the gas distribution outlet 2302 and the gas distribution inlet 2301 in the height space of the distribution plate 231. By setting a gas flow channel on the distribution plate 231 and sealing the gas flow channel with the cover plate 233 to form a gas supply flow channel, the processing technology of the gas distributor 23 can be simplified, and the size of the gas distributor 23 in the thickness direction can be reduced.

[0074] Furthermore, the horizontal extension of the gas distribution outlet 2302 and gas distribution inlet 2301 of the gas distributor 23 allows for the assembly of the gas distributor 23 with the burner 22 in a horizontal longitudinal direction, and also allows for the assembly of the gas distributor 23 with the gas proportional valve 5 in a horizontal longitudinal direction. This reduces the vertical dimension of the burner unit 2 to some extent, fully utilizing the space in the longitudinal direction and resulting in a smaller burner unit 2. The vertical arrangement of the gas distribution outlet 2302 and gas distribution inlet 2301 of the gas distributor 23 allows the burner 22 and gas proportional valve 5 to be positioned above and below the gas distribution valve, respectively, fully utilizing the space behind the gas distributor 23.

[0075] Continue as Figure 7 As shown, the distribution plate 231 includes a plate body 2311 and baffle portions 2312. The plate body 2311 is provided with a gas flow channel, and a plurality of baffle portions 2312 are arranged vertically in the gas flow channel to divide the gas flow channel into at least two diversion grooves 2310 arranged along the left and right directions of the plate body 2311, and adjacent diversion grooves 2310 are not connected to each other. In some embodiments, the distribution plate 231 is an integrally formed structure, that is, the gas flow channel is directly formed on the distribution plate 231.

[0076] The plate body 2311 includes a first part 23111 and a second part 23112. The first part 23111 extends horizontally and has a gas distribution outlet 2302. The second part 23112 extends vertically and has a gas distribution inlet 2301 at the end away from the first part 23111. Furthermore, the second part 23112 is located to the right of the first part 23111. When the gas distributor 23 is installed on the housing 21 of the burner device 2, the second part 23112 is offset from the air supply interface 211 of the housing 21, which facilitates the layout of the fan 4 and the gas proportional valve 5.

[0077] In some embodiments, each diversion channel 2310 has one gas distribution inlet 2301 and at least two gas distribution outlets 2302. For example, Figure 7 In this configuration, there are two distribution channels 2310, arranged in a left-right direction. Each distribution channel 2310 is equipped with one gas distribution inlet 2301 and multiple gas distribution outlets 2302. Adjacent distribution channels 2310 are not connected to each other. Specifically, the distribution channel 2310 on the left has eight gas distribution outlets 2302, and the nozzles 232 installed at these eight gas distribution outlets 2302 are used to supply gas to the left distribution channel. The distribution channel 2310 on the right has three gas distribution outlets 2302, and the nozzles 232 installed at these three gas distribution outlets 2302 are used to supply gas to the right distribution channel.

[0078] Furthermore, the orifice area of ​​a single gas distribution inlet 2301 is larger than the orifice area of ​​a single gas distribution outlet 2302. This arrangement ensures that sufficient gas can be supplied into the premixing channel 220, avoiding intermittent gas supply to the premixing channel 220 and guaranteeing combustion quality.

[0079] In some embodiments, the area of ​​the cover plate 233 is larger than the area of ​​the distribution plate 231. This ensures that the cover plate 233 is fixedly connected to the distribution plate 231 while covering all the diversion channels 2310. It also facilitates the fixed connection between the cover plate 233 and the outer casing 21, making it easier to fix the cover plate 233 to the outer casing 21. A portion of the fasteners between the cover plate 233 and the outer casing 21 are the same fasteners as a portion of the fasteners between the burner 22 and the outer casing 21. Similarly, a portion of the fasteners between the cover plate 233 and the outer casing 21 are the same fasteners as a portion of the fasteners between the distribution plate 231 and the outer casing 21.

[0080] Obviously, the above embodiments of this application are merely examples for clear illustration and are not intended to limit the implementation of this application. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of the claims of this application.

Claims

1. A gas distributor, characterized in that, include: The distribution plate (231) is provided with a gas flow channel. The distribution plate (231) has a gas distribution outlet (2302) and a gas distribution inlet (2301) that extend through its thickness direction. The gas distribution outlet (2302) and the gas distribution inlet (2301) are located at the upper and lower parts of the distribution plate (231) respectively, and are both connected to the gas flow channel. The gas distribution inlet (2301) is configured to connect to a gas proportional valve (5). Nozzle (232), each of the gas distribution outlets (2302) is equipped with the nozzle (232), the nozzle (232) is configured to inject gas in the gas flow channel into the burner (22); A cover plate (233) is sealed and fixed to the distribution plate (231) and covers the gas flow channel.

2. The gas distributor according to claim 1, characterized in that, The distribution plate (231) includes a plate body (2311) and a partition (2312). The plate body (2311) is provided with the gas flow channel. A plurality of partitions (2312) are arranged vertically in the gas flow channel and are used to divide the gas flow channel into at least two diversion slots (2310) arranged in the left and right directions of the plate body (2311). The two adjacent diversion slots (2310) are not connected to each other.

3. The gas distributor according to claim 2, characterized in that, The plate body (2311) includes a first part (23111) and a second part (23112). The first part (23111) extends horizontally in the left-right direction and has the gas distribution outlet (2302) on it. The second part (23112) extends vertically and has the gas distribution inlet (2301) at the end of the second part (23112) away from the first part (23111).

4. The gas distributor according to claim 3, characterized in that, In each of the aforementioned distribution channels (2310), there is one gas distribution inlet (2301) and at least two gas distribution outlets (2302).

5. The gas distributor according to claim 4, characterized in that, The orifice area of ​​a single gas distribution inlet (2301) is larger than the orifice area of ​​a single gas distribution outlet (2302).

6. A burner device, characterized in that, The device includes a housing (21), a burner (22), and a gas distributor as described in any one of claims 1-5, wherein the burner (22) is fixed inside the housing (21) and has a premixing channel (220) inside the burner (22), the gas distributor is fixed to the housing (21), and the nozzle (232) is inserted into the premixing channel (220), and the gas distribution inlet (2301) is located outside the bottom of the housing (21).

7. The burner device according to claim 6, characterized in that, The burner (22) has a receiving groove (2210) on its front side, the distribution plate (231) is fixed to the outer shell (21), and the upper part of the distribution plate (231) is housed in the receiving groove (2210).

8. The burner device according to claim 7, characterized in that, The front side of the outer casing (21) has a clearance slot (212) opposite to the receiving groove (2210), and the cover plate (233) is fixed to the outer casing (21) and covers the clearance slot (212).

9. The burner device according to any one of claims 6-8, characterized in that, The burner device further includes an ignition assembly (24), the housing (21) surrounds the burner (22) to form a combustion chamber (2102), the ignition assembly (24) is fixed to the housing (21), and a portion of the ignition assembly (24) is located inside the combustion chamber (2102).

10. A gas-fired water heater, characterized in that, The device includes a blower (4), a gas proportional valve (5), and a burner assembly as described in any one of claims 6-9, wherein the blower (4) is used to supply air to the burner assembly, and the gas proportional valve (5) is configured to be connected to a gas pipeline and used to supply gas to the burner assembly.

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