Gas proportional valve and gas water heater

Abstract

The utility model relates to the technical field of gas proportional valves, in particular to a gas proportional valve and a gas water heater. The fuel gas proportional valve comprises a main valve body, a segmented valve set, a main electromagnetic valve and a proportional adjusting valve set, the segmented valve set comprises a segmented valve body and a plurality of segmented electromagnetic valves, an inner cavity and a plurality of branch gas cavities are formed in the segmented valve body, and the multiple segmented electromagnetic valves control opening and closing of the corresponding branch gas cavities respectively. The multiple air distribution cavities at least comprise the first air distribution cavity, the second air distribution cavity and the third air distribution cavity which are sequentially and adjacently arranged, the segmented valve body is further provided with a core pulling hole, the first air distribution cavity is communicated with the second air distribution cavity through the inner cavity, the second air distribution cavity is communicated with the third air distribution cavity through the core pulling hole, and one end of the core pulling hole penetrates through the surface of the segmented valve body and forms a die drawing opening. And a gland is hermetically covered in the draft opening. And the segmented valve group is integrated to the main valve body, so that the structure is simplified. The core-pulling hole machining process is simple, cost is saved, and stress generated during machining and forming of the segmented valve body can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas proportional valves, and particularly relates to a gas proportional valve and a gas water heater. Background Art

[0002] Gas proportional valves are widely used in gas water heaters with automatic constant temperature functions. A gas proportional valve includes a proportional adjustment component, a main solenoid valve, and a main valve body. The proportional adjustment component drives the valve element to act through a proportional solenoid valve to change the gap between the valve element and the valve port of the main valve body, so as to achieve the on-off, voltage stabilization, and proportional adjustment of gas.

[0003] In the application of the segmented combustion technology of existing gas proportional valves in gas water heaters, it is necessary to cooperate with a segmented control module in the jet pipe to control the gas in segments, resulting in a complex overall structure and high cost. Summary of the Utility Model

[0004] One of the technical problems to be solved by the utility model is to provide a gas proportional valve, which can effectively solve the technical problems of complex structure and high cost existing in the prior art when the gas proportional valve cooperates with the segmented control module in the jet pipe to control the gas in segments.

[0005] Another technical problem to be solved by the utility model is to provide a gas water heater, which can effectively solve the technical problems of complex structure and high cost existing in the prior art when the gas proportional valve cooperates with the segmented control module in the jet pipe to control the gas in segments.

[0006] The above first technical problem is solved by the following technical solutions:

[0007] A gas proportional valve, comprising a main valve body, a segmented valve group, a main solenoid valve, and a proportional adjustment valve group. The main valve body has an air inlet and a valve port. The segmented valve group includes a segmented valve body and a plurality of segmented solenoid valves. The segmented valve body is installed on the main valve body. An inner cavity and a plurality of air distribution cavities are arranged in the segmented valve body. The plurality of segmented solenoid valves are installed on the segmented valve body and respectively control the opening and closing of the corresponding air distribution cavities. The main solenoid valve is installed on the main valve body and controls the opening and closing of the air inlet. The proportional adjustment valve group is installed on the main valve body and adjusts the opening of the valve port.

[0008] The plurality of air distribution cavities at least include a first air distribution cavity, a second air distribution cavity, and a third air distribution cavity that are arranged adjacent to each other in sequence. The segmented valve body is further provided with a core pulling hole. The first air distribution cavity is communicated with the second air distribution cavity through the inner cavity. The second air distribution cavity is communicated with the third air distribution cavity through the core pulling hole. One end of the core pulling hole penetrates the surface of the segmented valve body and forms a draft port. A gland is hermetically covered in the draft port.

[0009] The gas proportional valve described in the present utility model has the following beneficial effects compared with the background art:

[0010] The gas proportional valve includes a main valve body, a segmented valve group, a main solenoid valve, and a proportional regulating valve group. By integrating the segmented valve group onto the main valve body, the gas proportional valve not only has functions of gas on-off, voltage stabilization, and proportional regulating output, but also has a segmented control function. By individually controlling the opening and closing of the corresponding gas distribution cavities through multiple segmented solenoid valves, separate control or combined control of multiple gas distribution cavities can be achieved, reducing the minimum load of the gas proportional valve while increasing the overlap of each load segment and improving the stability of the gas water heater.

[0011] In the segmented valve body, the first gas distribution cavity is communicated with the second gas distribution cavity through an inner cavity, and the second gas distribution cavity is communicated with the third gas distribution cavity through a core-pulling hole. By setting the core-pulling hole, the material cost of the segmented valve body is saved, and the sealing performance of the core-pulling hole is ensured by a gland, with a simple structure and low cost. At the same time, the processing technology of the core-pulling hole is simple, and the second gas distribution cavity and the third gas distribution cavity are communicated through the core-pulling hole, which can effectively reduce the stress generated during the processing and forming of the segmented valve body.

[0012] In one embodiment, the main valve body is provided with a first installation hole, and one end of the segmented valve body away from the gas distribution cavity is provided with a second installation hole. The first installation hole and the second installation hole are coaxially communicated and connected by a fastener.

[0013] In one embodiment, the segmented valve body is provided with a positioning installation hole, and the jet pipe is fixedly installed on the segmented valve body through the positioning installation hole.

[0014] In one embodiment, a positioning column and a plurality of air outlet columns are convexly provided on the first side of the segmented valve body. The air outlet columns are provided with air outlet openings, and the air outlet openings are respectively in one-to-one correspondence and communication with the corresponding gas distribution cavities; the positioning column is arranged circumferentially of the air outlet column, and the positioning installation hole is arranged inside the positioning column.

[0015] In one embodiment, the segmented valve body further has a second side opposite to the first side. A plurality of sealing valve openings are formed on the second side for the plurality of gas distribution cavities, and the valve seats of the plurality of segmented solenoid valves are hermetically installed on the sealing valve openings in one-to-one correspondence.

[0016] In one embodiment, a ground wire installation column is convexly provided on the first side of the segmented valve body, and a ground wire installation hole is arranged inside the ground wire installation column.

[0017] In one embodiment, a pressure sampling column is convexly provided on the first side of the segmented valve body. The pressure sampling column has an inner hole that can be opened and closed, and the inner hole is communicated with the inner cavity and is used for accommodating and installing a pressure sampling component.

[0018] In one embodiment, the proportional control valve group includes:

[0019] A proportional valve, mounted on the main valve body;

[0020] The valve comprises a valve shaft and a valve plate, the proportional valve is transmission-connected to one end of the valve shaft, the other end of the valve shaft is integrally formed with the valve plate, and the proportional valve drives the valve plate to open or close the valve port.

[0021] In one embodiment, the main valve body is provided with at least two diagonally distributed first holes and two diagonally distributed second holes along the circumference of the air inlet, and the joint of the air inlet pipe is selectively installed on the main valve body through the two first holes or the two second holes.

[0022] The above second technical problem is solved by the following technical solution:

[0023] A gas water heater comprises the above-mentioned gas proportional valve.

[0024] Compared with the background technology, the gas water heater of the utility model has the following beneficial effects:

[0025] By integrating the sectional valve group into the main valve body, the gas proportional valve has the functions of gas on-off, pressure stabilization and proportional adjustment output, as well as sectional control. At the same time, the minimum load of the gas proportional valve is reduced while the overlap of each load segment is increased, thus improving the stability of the gas water heater.

[0026] In the segmented valve body, the first sub-air cavity is connected to the second sub-air cavity through the inner cavity, and the second sub-air cavity is connected to the third sub-air cavity through the core-pulling hole. By setting the core-pulling hole, the material cost of the segmented valve body is saved, and the sealing of the core-pulling hole is ensured by the pressure cover, the structure is simple, and the cost is low. At the same time, the processing technology of the core-pulling hole is simple, and the second sub-air cavity is connected to the third sub-air cavity through the core-pulling hole, which can effectively reduce the stress generated by the segmented valve body during processing and molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the assembly and decomposition of the gas proportional valve and the air intake pipe provided by the embodiment of the utility model;

[0028] Figure 2 It is a cross-sectional view of a gas proportional valve provided by an embodiment of the utility model;

[0029] Figure 3 is a cross-sectional view of a segmented valve body provided by an embodiment of the utility model;

[0030] Figure 4 It is a structural schematic diagram of a segmented valve body provided in an embodiment of the utility model.

[0031] The names and labels of the components in the figure are as follows:

[0032] 10. Connector

[0033] 1. Main valve body; 11. Intake port; 12. Valve port; 13. First hole; 14. Second hole

[0034] 2. Segmented valve group; 21. Segmented valve body; 211. Inner cavity; 2121. First air distribution cavity; 2122. Second air distribution cavity; 2123. Third air distribution cavity; 213. Core pulling hole; 214. Fastener; 215. Positioning column; 2150. Positioning and installation hole; 216. Air outlet column; 2160. Air outlet; 217. Ground wire installation column; 2170. Ground wire installation hole; 218. Pressure sampling column; 22. Segmented solenoid valve

[0035] 3. Main solenoid valve; 4. Proportion regulating valve group; 41. Proportion valve; 42. Valve; 421. Valve shaft; 422. Valve disc; 43. Magnet; 44. Diaphragm; 45. Locking piece Detailed implementation manners

[0036] To make the technical problems solved, the technical solutions adopted, and the technical effects achieved by the present utility model clearer, the technical solutions of the present utility model will be further described below with reference to the accompanying drawings and through specific implementation manners. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. Additionally, it should be noted that for the convenience of description, only parts related to the present utility model are shown in the drawings, rather than all of them.

[0037] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] In the description of this embodiment, the orientation or positional relationship terms such as "upper", "lower", "right", and "left" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0039] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0040] This embodiment provides a gas water heater, which realizes the on-off, voltage stabilization and ratio adjustment of gas through a gas proportional valve.

[0041] like Figure 1 and Figure 2 As shown, this embodiment also proposes a gas proportional valve, which is mainly used in the above-mentioned gas water heater. Of course, the gas proportional valve can also be used in other equipment. Specifically, the gas proportional valve includes a main valve body 1, a main solenoid valve 3 and a proportional regulating valve group 4, and the main valve body 1 has an air inlet 11 and a valve port 12. The main solenoid valve 3 is installed on the main valve body 1 and controls the opening and closing of the air inlet 11. The proportional regulating valve group 4 is installed on the main valve body 1 and adjusts the opening of the valve port 12. The joint 10 of the external air inlet pipe is installed on the air inlet 11 of the main valve body 1 by screws to supply gas to the main valve body 1.

[0042] like Figure 1 As shown, the main valve body 1 is provided with at least two diagonally distributed first holes 13 and two diagonally distributed second holes 14 along the circumference of the air inlet 11, and the joint 10 of the air inlet pipe is selectively installed on the main valve body 1 through the two first holes 13 or the two second holes 14. The air inlet 11 is a circular opening, and the point where the virtual diagonal line connecting the two first holes 13 and the virtual diagonal line connecting the two second holes 14 intersect is the center point of the air inlet 11, so that the joint 10 is evenly stressed, and the sealing effect of the joint 10 and the air inlet 11 is improved. By selectively installing the joint 10 on the first hole 13 or the second hole 14, the joint 10 has different installation positions, so that the joint 10 can be flexibly installed according to installation requirements.

[0043] In this embodiment, the opening and closing of the air inlet 11 is controlled by the main solenoid valve 3. Since the main solenoid valve 3 is a prior art, the structure and working process of the main solenoid valve 3 are not described in detail.

[0044] like Figure 1 and Figure 2 As shown, the proportional control valve includes a proportional valve 41 and a valve 42, and the proportional valve 41 is installed on the main valve body 1. The valve 42 includes a valve shaft 421 and a valve plate 422. The proportional valve 41 is drivingly connected to one end of the valve shaft 421, and the other end of the valve shaft 421 is integrally formed with the valve plate 422. The proportional valve 41 drives the valve plate 422 to open or close the valve port 12. It should be noted that the valve 42 is a plastic part, and the valve shaft 421 and the valve plate 422 are integrally formed by injection molding, which reduces the processing difficulty and cost of the valve 42 and improves the processing efficiency and structural strength of the valve 42.

[0045] Specifically, the proportional valve group 4 further includes a magnet 43, a diaphragm 44, and a locking piece 45, all of which are in a circular ring structure. One end of the valve stem 421 is successively sleeved with the magnet 43, the diaphragm 44, and the locking piece 45. The locking piece 45 is fixedly connected to the valve stem 421 to lock and install the magnet 43 and the diaphragm 44 at the end of the valve stem 421 away from the valve plate 422. When the coil of the proportional valve 41 is not energized, there is an attractive magnetic force between the magnet 43 and the iron core (non-magnetic) of the proportional valve 41, so that the valve plate 422 presses against the valve port 12. When the coil of the proportional valve 41 is energized, there is a repulsive magnetic force between the magnet 43 and the iron core (magnetic) of the proportional valve 41, so that the valve plate 422 opens the valve port 12 and can adjust the gap between the valve plate 422 and the valve port 12. It should be noted that the above-mentioned magnet 43 is made of neodymium iron boron material with high magnetic field and small volume to improve the magnetic attraction of the magnet 43 and ensure the sealing effect of the valve plate 422 on the valve port 12.

[0046] In the application of the segmented combustion technology of gas water heaters, the existing gas proportional valves need to cooperate with the segmented control module in the gas injection pipe to control the gas in segments, resulting in a complex overall structure and high cost.

[0047] To solve the above problems, as Figures 1 to 3 shown, the gas proportional valve includes a segmented valve group 2. The segmented valve group 2 includes a segmented valve body 21 and a plurality of segmented solenoid valves 22. The segmented valve body 21 is installed on the main valve body 1. An inner cavity 211 and a plurality of gas chambers are arranged in the segmented valve body 21. The plurality of segmented solenoid valves 22 are installed on the segmented valve body 21 and respectively control the opening and closing of the corresponding gas chambers. The plurality of gas chambers at least include a first gas chamber 2121, a second gas chamber 2122, and a third gas chamber 2123 arranged adjacent to each other in sequence. The segmented valve body 21 is further provided with a core extraction hole 213. The first gas chamber 2121 is communicated with the second gas chamber 2122 through the inner cavity 211. The second gas chamber 2122 is communicated with the third gas chamber 2123 through the core extraction hole 213. One end of the core extraction hole 213 penetrates the surface of the segmented valve body 21 and forms a draft port. A gland (not shown in the figure) is hermetically covered in the draft port.

[0048] In this embodiment, by integrating the segmented valve group 2 onto the main valve body 1, the gas proportional valve has the functions of gas on-off, pressure stabilization, and proportional adjustment output, and also has a segmented control function. By individually controlling the opening and closing of the corresponding gas chambers through the plurality of segmented solenoid valves 22, separate control or combined control of the plurality of gas chambers can be realized, reducing the minimum load of the gas proportional valve while increasing the overlap of each load segment and improving the stability of the gas water heater.

[0049] Inside the segmented valve body 21, the first air distribution cavity 2121 communicates with the second air distribution cavity 2122 through the inner cavity 211, and the second air distribution cavity 2122 communicates with the third air distribution cavity 2123 through the core-pulling hole 213. By providing the core-pulling hole 213, the material cost of the segmented valve body 21 is saved, and the sealing performance of the core-pulling hole 213 is ensured by the gland, with a simple structure and low cost. At the same time, both the main valve body 1 and the segmented valve body 21 are die-cast aluminum parts, and the core-pulling hole 213 is formed by core-pulling with a mold, with a simple processing technology. Moreover, the second air distribution cavity 2122 communicates with the third air distribution cavity 2123 through the core-pulling hole 213, which can effectively reduce the stress generated during the processing and forming of the segmented valve body 21. A sealant is coated between the gland and the core-pulling hole 213 to enhance the sealing effect between the gland and the core-pulling hole 213 and ensure the sealing of the core-pulling hole 213.

[0050] In one embodiment, as Figure 3 shown, there are three air distribution cavities in the segmented valve body 21, namely the first air distribution cavity 2121, the second air distribution cavity 2122, and the third air distribution cavity 2123, which are arranged adjacent to each other in sequence. The first air distribution cavity 2121, the second air distribution cavity 2122, and the third air distribution cavity 2123 can be opened separately, or two of them can be opened together, or all three can be opened simultaneously, so that there are six opening modes for the three air distribution cavities of the segmented valve body 21, reducing the minimum load of the gas proportional valve while increasing the overlap of each load section. In other embodiments, there may be four or more air distribution cavities arranged adjacent to each other in sequence in the segmented valve body 21, and starting from the second air distribution cavity, a core-pulling hole 213 is provided between adjacent two air distribution cavities, so that multiple air distribution cavities are connected in parallel.

[0051] As Figure 1 shown, the main valve body 1 is provided with a first mounting hole, and one end of the segmented valve body 21 away from the air distribution cavity is provided with a second mounting hole. The first mounting hole and the second mounting hole are coaxially connected and are connected by a fastener 214. Since the main valve body 1 is away from the air distribution cavity of the segmented valve body 21, the disassembly and assembly operations of the main valve body 1 and the segmented valve body 21 will not interfere with the segmented solenoid valve 22 installed on the segmented valve body 21. Therefore, when disassembling and assembling the main valve body 1 and the segmented valve body 21, it is not necessary to first remove the segmented solenoid valve 22, improving the disassembly and assembly efficiency of the gas proportional valve.

[0052] Specifically, the fastener 214 is a bolt, the first hole 13 is a through hole, the second hole 14 is a threaded hole, and the bolt is sequentially inserted into the first hole 13 and the second hole 14 along the flow direction of the gas at the valve port 12 and finally screwed tightly with the second hole 14, improving the connection strength and sealing effect between the main valve body 1 and the segmented valve body 21 and facilitating the disassembly and assembly operations of the main valve body 1 and the segmented valve body 21.

[0053] As Figure 4As shown, the segmented valve body 21 is provided with a positioning installation hole 2150, and the jet pipe is fixedly installed on the segmented valve body 21 through the positioning installation hole 2150. The positioning installation hole 2150 serves as an installation reference for the jet pipe, which improves the installation accuracy and efficiency of the jet pipe on the segmented valve body 21. In this embodiment, there are two positioning installation holes 2150, which further improves the installation accuracy of the jet pipe.

[0054] In one embodiment, a positioning column 215 and a plurality of air outlet columns 216 are convexly provided on the first side of the segmented valve body 21, and the air outlet columns 216 are provided with air outlets 2160, and the air outlets 2160 are respectively connected with the corresponding sub-air cavities one by one. Positioning columns 215 are provided around the circumference of the air outlet columns 216, and positioning mounting holes 2150 are provided in the positioning columns 215. The positioning columns 215 protrude from the surface of the segmented valve body 21, which is convenient for the positioning and installation of the air injection pipe. The end of the air injection pipe is fixedly installed on the positioning column 215 by threaded connection of the screw with the positioning mounting hole 2150. Specifically, this embodiment has three air outlet columns 216 arranged side by side, and the air outlets 2160 of the three air outlet columns 216 are respectively connected with the first sub-air cavity 2121, the second sub-air cavity 2122 and the third sub-air cavity 2123.

[0055] In one embodiment, the segmented valve body 21 further has a second side opposite to the first side, and a plurality of segmented air chambers are formed with a sealing valve port on the second side, and the valve seats of the plurality of segmented solenoid valves 22 are sealed and installed on the sealing valve port one by one. The secondary sealing effect of the gas proportional valve is achieved by the sealing installation of the valve seats of the segmented solenoid valves 22 and the sealing valve port, without the need to achieve the secondary sealing effect through the proportional control valve group 4, thereby avoiding the problem of poor secondary sealing effect due to the low processing accuracy of the various components of the proportional control valve group 4.

[0056] like Figure 4 As shown, a ground wire installation column 217 is convexly provided on the first side of the segmented valve body 21, and a ground wire installation hole 2170 is provided in the ground wire installation column 217. The ground wire is installed in the ground wire installation hole 2170 and communicates with the segmented valve body 21. The ground wire is fixed in the ground wire installation hole 2170 to communicate with the segmented valve body 21 through the ground wire installation column 217, thereby improving the safety of the gas proportional valve. In addition, a ground wire mark is provided on one side of the ground wire installation column 217 to ensure accurate and quick installation of the ground wire.

[0057] In one embodiment, two ground wire mounting posts 217 are spaced and protruded on the first side of the segmented valve body 21. A pressure sampling post 218 is arranged between the two ground wire mounting posts 217. The pressure sampling post 218 has an openable and closable inner hole, which is communicated with the inner cavity 211 and is used to accommodate and install a pressure sampling component. The pressure sampling component in this embodiment can be a pressure sensor. When the gas proportional valve operates normally, the inner hole of the pressure sampling post 218 is sealed with components such as screws. When the gas proportional valve is debugged or maintained, the inner hole of the pressure sampling post 218 is opened, and the pressure sampling component is hermetically installed in the inner hole to collect the internal pressure value of the inner cavity 211. By installing the pressure sampling post 218 between the two ground wire mounting posts 217, the layout space on the first side of the segmented valve body 21 is fully utilized, realizing a compact layout.

[0058] It should be noted that, as Figure 1 and Figure 4 shown, by arranging the positioning post 215, the air outlet post 216, the ground wire mounting post 217 and the pressure sampling post 218 on the first side of the segmented valve body 21, the structure of the segmented valve body 21 is optimized, realizing a compact layout. At the same time, the segmented solenoid valve 22 is arranged on the second side of the segmented valve body 21, so that the segmented solenoid valve 22 is separately arranged from the above-mentioned positioning post 215, air outlet post 216, ground wire mounting post 217 and pressure sampling post 218, avoiding interference with the disassembly and assembly operations of the segmented solenoid valve 22, improving the disassembly and assembly efficiency of the segmented solenoid valve 22, and optimizing the structure of the segmented valve group 2.

[0059] The above embodiments only illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, there are various changes and modifications to the present invention, and these changes and modifications all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. Gas proportional valve, characterized in that, It includes a main valve body (1), a segmented valve group (2), a main solenoid valve (3) and a proportional regulating valve group (4). The main valve body (1) has an air inlet (11) and a valve port (12). The segmented valve group (2) includes a segmented valve body (21) and a plurality of segmented solenoid valves (22). The segmented valve body (21) is installed on the main valve body (1). An inner cavity (211) and a plurality of air distribution cavities are provided in the segmented valve body (21). The plurality of segmented solenoid valves (22) are installed on the segmented valve body (21) and respectively control the opening and closing of the corresponding air distribution cavities. The main solenoid valve (3) is installed on the main valve body (1) and controls the opening and closing of the air inlet (11). The proportional regulating valve group (4) is installed on the main valve body (1) and regulates the opening degree of the valve port (12). The plurality of air distribution cavities at least include a first air distribution cavity (2121), a second air distribution cavity (2122) and a third air distribution cavity (2123) which are arranged adjacent to each other in sequence. The segmented valve body (21) is further provided with a core pulling hole (213). The first air distribution cavity (2121) is communicated with the second air distribution cavity (2122) through the inner cavity (211). The second air distribution cavity (2122) is communicated with the third air distribution cavity (2123) through the core pulling hole (213). One end of the core pulling hole (213) penetrates through the surface of the segmented valve body (21) and forms a draft port. A gland is hermetically covered in the draft port.

2. The gas proportional valve according to claim 1, wherein The main valve body (1) is provided with a first installation hole. One end of the segmented valve body (21) far away from the air distribution cavity is provided with a second installation hole. The first installation hole and the second installation hole are coaxially communicated and connected by a fastener (214).

3. The gas proportional valve according to claim 1, wherein The segmented valve body (21) is provided with a positioning installation hole (2150). The air spraying pipe is fixedly installed on the segmented valve body (21) through the positioning installation hole (2150).

4. The gas ratio valve according to claim 3, wherein On the first side of the segmented valve body (21), a positioning column (215) and a plurality of air outlet columns (216) protrude. The air outlet column (216) is provided with an air outlet (2160). The air outlets (2160) are respectively communicated with the corresponding air distribution cavities in one-to-one correspondence. The positioning column (215) is arranged in the circumferential direction of the air outlet column (216). The positioning installation hole (2150) is arranged in the positioning column (215).

5. The gas ratio valve according to claim 4, characterized in that, The segmented valve body (21) further has a second side opposite to the first side. A plurality of air distribution cavities form sealing valve ports on the second side. The valve seats of the plurality of segmented solenoid valves (22) are hermetically installed on the sealing valve ports in one-to-one correspondence.

6. The gas ratio valve according to claim 1, characterized in that, On the first side of the segmented valve body (21), a ground wire installation column (217) protrudes. A ground wire installation hole (2170) is arranged in the ground wire installation column (217).

7. The gas proportional valve according to claim 1, wherein On the first side of the segmented valve body (21), a pressure sampling column (218) protrudes. The pressure sampling column (218) has an openable and closable inner hole. The inner hole is communicated with the inner cavity (211). The inner hole is used for accommodating and installing a pressure sampling component.

8. The gas proportional valve according to any one of claims 1 to 7, characterized in that, The proportional regulating valve group (4) includes: A proportional valve (41), installed on the main valve body (1); A valve (42), the valve (42) includes a valve stem (421) and a valve disc (422), the proportional valve (41) is drivingly connected to one end of the valve stem (421), the valve disc (422) is integrally formed at the other end of the valve stem (421), and the proportional valve (41) drives the valve disc (422) to open or close the valve port (12).

9. The gas proportional valve according to any one of claims 1 to 7, characterized in that The main valve body (1) is provided with at least two first holes (13) distributed diagonally and two second holes (14) distributed diagonally along the circumferential direction of the air inlet (11), and the joint of the air inlet pipe is selectively installed on the main valve body (1) through the two first holes (13) or the two second holes (14).

10. Gas water heater, characterized in that, It includes the gas proportional valve according to any one of claims 1 to 9.

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