Proportional valve adjusting module and gas proportional valve

Abstract

The invention belongs to the technical field of valves, and particularly discloses a proportional valve adjusting module and a gas proportional valve. The proportional valve adjusting module comprises a shell, a valve cover, a mounting ring, a valve assembly and an electromagnetic assembly. The shell is provided with a cavity and an air inlet hole, a first end opening of the shell forms a valve, and a second end is folded to form a flanging part; the mounting ring is detachably arranged on the shell in a sleeving manner and is connected with the valve cover so as to clamp the flanging part; the valve cover is hermetically mounted on the shell; the valve assembly comprises a valve shaft, a plugging piece and a diaphragm, and the periphery of the diaphragm is clamped between the shell and the valve deck in a sealed mode. The electromagnetic assembly is used for driving the plugging piece to adjust the opening degree of the valve port. Independent machining, assembling and testing of the proportional valve adjusting module can be achieved, modular arrangement of the proportional valve adjusting module is achieved, and the machining, testing and maintaining cost of the gas proportional valve can be reduced.

Description

Technical Field

[0001] The present invention relates to the field of valve technology, and in particular to a proportional valve regulating module and a gas proportional valve. Background Art

[0002] The gas proportional valve is the core component of the constant temperature gas water heater. Its main function is to stabilize the output pressure of the proportional valve and adjust the output pressure of the proportional valve according to the input current.

[0003] The gas proportional valve provided by the prior art generally includes a valve body, on which a cavity for installing a regulating valve is integrally formed, wherein the regulating valve includes a valve assembly, a valve cover and a coil assembly, the valve assembly is installed in the cavity, the coil assembly is installed on the side of the valve cover away from the valve body and is used to drive the valve assembly to move axially so that the valve assembly can adjust the valve opening of the cavity.

[0004] According to the structural setting of the gas proportional valve in the prior art, when the regulating valve fails, the entire gas proportional valve needs to be disassembled or replaced, which is not conducive to reducing the maintenance and replacement costs of the gas proportional valve. At the same time, if the gas proportional valve is disassembled to replace the regulating valve alone, the performance of the replaced regulating valve needs to be tested, which affects the subsequent maintenance efficiency. Summary of the invention

[0005] One of the technical problems solved by the present invention is to provide a proportional valve regulating module, which can effectively solve the problem of high processing, disassembly and repair costs of the gas proportional valve in the prior art, realize the modular setting of the proportional valve regulating module, and reduce the processing, testing and maintenance costs of the proportional valve regulating module.

[0006] The second technical problem solved by the present invention is to provide a gas proportional valve, which can effectively solve the problem of high cost of processing, disassembly and repair of existing gas proportional valves and reduce the cost of the gas proportional valve.

[0007] The first technical problem mentioned above is solved by the following technical solution:

[0008] A proportional valve regulating module, comprising:

[0009] A shell having a cavity extending in a first direction and an air inlet hole connected to the cavity, wherein a first end of the shell is opened to form a valve port, and a second end of the shell is folded outward to form a flange portion;

[0010] A valve cover is sealed and installed at the second end opening of the housing and is surrounded by the housing to form a valve cavity;

[0011] A mounting ring, detachably sleeved on the housing, the mounting ring being connected to the valve cover to clamp the flange portion;

[0012] A valve assembly, comprising a valve shaft extending along the first direction, a plugging member sleeved on a first end of the valve shaft, and a diaphragm sleeved on the valve shaft, wherein a peripheral sealing clamp of the diaphragm is disposed between the flange portion, the valve cover and the mounting ring, and the diaphragm divides the valve cavity into a first cavity and a second cavity, wherein the first cavity is communicated with the valve port and the air inlet hole;

[0013] The electromagnetic assembly is installed on a side of the valve cover away from the housing and is used to drive the valve assembly to move along the first direction so that the blocking member adjusts the opening of the valve port.

[0014] Compared with the background technology, the proportional valve regulating module described in the present invention has the following beneficial effects: through the cooperation of the valve cover, the housing, the valve assembly, the mounting ring and the electromagnetic assembly, the proportional valve regulating module forms a workable module, and before the proportional valve regulating module is installed on the valve body, the proportional valve regulating module can be tested for air tightness, voltage stabilization, proportional regulation and the like, thereby simplifying the testing operation of the proportional valve regulating module; when the test is not suitable, the proportional valve regulating module can be replaced and repaired by disassembling one of the components, thereby reducing the replacement and repair costs; when the test is suitable, the entire proportional valve regulating module can be directly installed on the valve body of the gas proportional valve during replacement, without the need for on the gas proportional valve, thereby improving maintenance efficiency. That is, the proportional valve regulating module provided by the present invention effectively realizes the modular setting of the proportional valve regulating module, so that the proportional valve regulating module can be mass-produced and interchangeable, thereby reducing the design, processing and rework costs of the proportional valve regulating module; at the same time, the setting of the mounting ring and the flange portion is conducive to simplifying the processing of the shell, improving the convenience of processing and assembly of the proportional valve regulating end, reducing costs, and improving the installation accuracy and assembly efficiency of the diaphragm, thereby improving the assembly efficiency and assembly accuracy of the valve assembly.

[0015] In one embodiment, the mounting ring includes an end plate portion, an outer circumferential edge of the end plate portion is vertically connected to an outer convex ring portion, and the outer convex ring portion and the end plate portion are sleeved outside the shell;

[0016] The valve cover includes a main cover body, which is inserted into the inner side of the outer convex ring portion, and the flange portion is clamped between the end plate portion and the main cover body. The outer convex ring portion, the end plate portion, the main cover body and the flange portion together form a sealing ring groove, and the periphery of the diaphragm is pressed tightly in the sealing ring groove.

[0017] In one embodiment, the outer convex ring portion is connected to a plurality of plug-in plates in a direction toward the electromagnetic assembly, and the plurality of plug-in plates are arranged at intervals along the circumference of the end plate portion;

[0018] The main cover body has a fixing plate portion protruding outward, the main cover body is inserted into the inner side of the outer protruding ring portion, an insertion hole is opened on the fixing plate portion, the insertion hole corresponds to the insertion plate portion one by one, and the insertion plate portion is inserted into the insertion hole.

[0019] In one embodiment, the outer convex ring portion is interference fit with the main cover body;

[0020] And / or, a terminal end of the plug plate portion extends out of the valve cover and is bent to form a bent portion, and the bent portion is in contact with an end of the valve cover facing the electromagnetic assembly.

[0021] In one embodiment, the mounting ring includes an end plate portion and an inner convex ring portion vertically connected to the inner periphery of the end plate portion, the flange portion is clamped between the end plate portion and the valve cover, and the inner convex ring portion is interference-fitted on the shell.

[0022] In one embodiment, the electromagnetic assembly comprises:

[0023] The magnetic conductive frame comprises a bottom plate portion and two side plate portions connected to each other in a U-shape, wherein the two side plate portions are detachably connected to the valve cover;

[0024] The coil assembly is arranged on the bottom plate portion and is located between the bottom plate portion and the valve cover.

[0025] In one of the embodiments, buckle parts are protruded from two opposite sides of the valve cover, and each of the side plates is provided with a bayonet hole, and the buckle parts are clamped in the bayonet hole.

[0026] In one of the embodiments, a guide portion is protruding from the buckle portion, and a notch connected to the bayonet is formed on the side of the side plate portion away from the bottom plate portion. The notch is arranged opposite to the guide portion, and the guide portion can slide through the notch along the first direction.

[0027] In one embodiment, the valve shaft comprises:

[0028] An outer shaft extending along the first direction and having a central through hole, a first end of the outer shaft being connected to the blocking member, and a protrusion being convexly provided on a hole wall of the central through hole;

[0029] The inner shaft extends along the first direction, the first end of the inner shaft has an undercut, the undercut is inserted into the central through hole and abuts against the side of the protrusion away from the electromagnetic component, the second end of the inner shaft extends out of the second end of the outer shaft, and the diaphragm is sleeved on the inner shaft.

[0030] In one embodiment, the undercut comprises a plurality of elastic clamping arms spaced apart along the circumference of the outer shaft, a clamping groove is provided on the outer side of the elastic clamping arm, and the protrusion is clamped in the clamping groove; a pressing hole connected to the central through hole is provided on the outer shaft, and the pressing hole is provided in a one-to-one correspondence with the elastic clamping arm;

[0031] And / or, a pressing portion is radially extended outward from the second end of the inner shaft, a magnet is sleeved on the inner shaft, and the diaphragm and the magnet are sandwiched between the pressing portion and the second end of the outer shaft.

[0032] The above second technical problem is solved by the following technical solution:

[0033] A gas proportional valve, comprising a valve body and the proportional valve regulating module as described above, wherein the valve body has an open valve cavity, an air inlet channel and an air outlet channel, the valve cavity comprises a first chamber and a second chamber, the air inlet channel is communicated with the first chamber, the air outlet channel is communicated with the second chamber, the housing is sealably inserted into the first chamber, and the valve cover is connected to the open end surface of the valve cavity;

[0034] When the blocking member opens the valve port, the air inlet channel is connected to the air outlet channel through the valve port. When the blocking member blocks the valve port, the air inlet channel is separated from the air outlet channel.

[0035] Compared with the background technology, the gas proportional valve described in the present invention has the following beneficial effects: by adopting the above-mentioned proportional valve regulating module, the proportional valve regulating module can be separately processed, assembled and tested before being installed on the valve body, thereby reducing the processing accuracy requirements for the valve body, and facilitating the maintenance and replacement of the proportional valve regulating module, thereby reducing the design, processing, testing, maintenance and replacement costs of the gas proportional valve.

[0036] In one embodiment, the valve chamber further comprises a third chamber, the inner diameters of the third chamber, the first chamber and the second chamber are successively reduced, a first inner step surface is formed between the third chamber and the first chamber, and a second inner step surface is formed between the first chamber and the second chamber;

[0037] The mounting ring is formed with a first outer step surface; the housing has a first outer wall surface and a second outer wall surface with gradually decreasing outer diameters, and a second outer step surface is formed between the first outer wall surface and the second outer wall surface;

[0038] The mounting ring is located in the third chamber, the first outer wall surface is spaced apart from the chamber wall of the first chamber, the second outer wall surface extends into the second chamber, a first seal is arranged between the first inner step surface and the first outer step surface, and a second seal is arranged between the second inner step surface and the second outer step surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A schematic diagram of the structure of a proportional valve regulating module provided in Embodiment 1 of the present invention;

[0040] Figure 2 A cross-sectional view of a proportional valve regulating module provided in Embodiment 1 of the present invention;

[0041] Figure 3 A schematic diagram of the disassembled structure of the proportional valve regulating module provided in the first embodiment of the present invention;

[0042] Figure 4 A schematic diagram of the structure of the valve cover provided in the first embodiment of the present invention;

[0043] Figure 5 A cross-sectional view of the proportional valve regulating module provided in the first embodiment of the present invention without the electromagnetic component;

[0044] Figure 6 for Figure 5 A partial enlarged view of point I in the middle;

[0045] Figure 7 for Figure 5 A partial enlarged view of the J in the middle;

[0046] Figure 8 A partial cross-sectional view of a gas proportional valve provided in Embodiment 2 of the present invention;

[0047] Fig. 9 for Figure 8 A partial enlarged view of the K in the middle;

[0048] Fig.10 It is a partial cross-sectional view of the gas proportional valve according to the second embodiment of the present invention from another perspective.

[0049] Description of labels:

[0050] 100, proportional valve regulating module; 200, valve body; 201, valve cavity; 2011, first chamber; 2012, second chamber; 2013, third chamber; 202, air outlet channel; 203, limit slot; 300, first sealing member; 400, second sealing member;

[0051] 1. Shell; 11. Shell body; 111. Shell main part; 112. Narrowing part; 113. First cavity; 114. Air inlet; 115. Valve port; 12. Flanging part;

[0052] 2. Valve assembly; 21. Outer shaft; 211. Hollow shaft; 2111. Pressing port; 212. Pressing portion; 213. Hook portion; 214. Protruding portion; 22. Inner shaft; 221. Main shaft; 222. Undercut; 2221. Elastic clamping arm; 2222. Slot; 223. Pressing portion; 23. Diaphragm; 231. Connecting ring; 232. Deformation portion; 233. Sealing ring; 234. Boss portion; 24. Blocking piece; 25. Magnet;

[0053] 3. Valve cover; 31. Main cover body; 32. Fixed plate portion; 321. Insertion hole; 322. Mounting hole; 33. Buckle portion; 34. Second cavity; 35. Guide portion;

[0054] 4. Electromagnetic assembly; 41. Bracket; 42. Iron core; 43. Coil; 44. Magnetic frame; 441. Bottom plate; 442. Side plate; 4421. Bayonet; 4422. Notch; 45. Insulating shell; 46. Locking nut;

[0055] 5. Mounting ring; 51. End plate portion; 52. Outer convex ring portion; 53. Inner convex ring portion; 54. Insert plate portion. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0057] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0058] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0059] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0060] Embodiment 1

[0061] The present embodiment provides a proportional valve regulating module 100, which can be processed, assembled and tested separately, and after the test is completed, can be installed on the valve body 200 of the gas proportional valve as a core module for flow regulation and voltage stabilization in the gas proportional valve.

[0062] like Figures 1 to 3 As shown, the proportional valve regulating module 100 includes a housing 1, a valve cover 3, a mounting ring 5, a valve assembly 2 and an electromagnetic assembly 4. The housing 1 has a cavity extending in a first direction and an air inlet 114 connected to the cavity. The first end of the housing 1 is opened to form a valve port 115, and the second end of the housing 1 is folded outward to form a flange portion 12; the valve cover 3 is sealed and installed at the second end opening of the housing 1 and encloses the housing 1 to form a valve cavity; the mounting ring 5 is detachably sleeved on the housing 1, and the mounting ring 5 is connected to the valve cover 3 to clamp the flange portion 12; the valve assembly 2 includes a valve shaft extending in the first direction, a valve shaft sleeved on the valve cover 3, and a valve shaft 115; the valve shaft 115 is provided on the housing 1, and the valve shaft 115 is provided on the housing 1 ... The sealing piece 24 at the first end of the valve shaft and the diaphragm 23 sleeved on the valve shaft, the peripheral sealing clamp of the diaphragm 23 is arranged between the shell 1, the valve cover 3 and the mounting ring 5, and the diaphragm 23 divides the valve cavity into a first cavity 113 and a second cavity 34, the first cavity 113 is connected with the valve port 115 and the air inlet hole 114; the electromagnetic assembly 4 is installed on the side of the valve cover 3 away from the shell 1, and is used to drive the valve assembly 2 to move in the first direction so that the sealing piece 24 can adjust the opening of the valve port 115.

[0063] When the proportional valve regulating module 100 provided in this embodiment is installed on the valve body 200 of the gas proportional valve, a valve cavity 201 and an air inlet channel and an air outlet channel 202 connected to the valve cavity 201 are provided on the valve body 200; the shell 1 is sealed and inserted into the valve cavity 201, and the air inlet hole 114 on the shell 1 is connected to the air inlet channel through the valve cavity 201, and the electromagnetic component 4 is located outside the valve cavity 201.

[0064] The proportional valve regulating module 100 provided in this embodiment forms a workable module through the cooperation of the valve cover 3, the shell 1, the mounting ring 5, the valve assembly 2 and the electromagnetic assembly 4. Before the proportional valve regulating module 100 is installed on the valve body 200, the proportional valve regulating module 100 can be tested for air tightness, voltage stabilization, proportional regulation and the like, thereby simplifying the testing operation of the proportional valve regulating module 100. When the test is not suitable, the proportional valve regulating module 100 can be replaced and repaired by disassembling one of the components, thereby reducing the replacement and repair costs. When the test is suitable, the entire proportional valve regulating module 100 can be installed on the valve body 200 of the gas proportional valve without the need to perform secondary pressure adjustment again. When the proportional valve regulating module 100 fails, the proportional valve regulating module 100 can be removed from the valve body 200 as a whole to achieve the maintenance and replacement of the proportional valve regulating module 100.

[0065] That is, the proportional valve regulating module 100 provided in this embodiment effectively realizes the modular setting of the proportional valve regulating module 100, so that the proportional valve regulating module 100 can be mass-produced and interchangeable, thereby reducing the design, processing and rework costs of the proportional valve regulating module 100; at the same time, the assembly between the valve cover 3, the housing 1 and the diaphragm 23 is realized through the mounting ring 5, which can effectively simplify the processing of the housing 1, and ensure the position accuracy of the diaphragm 23 relative to the housing 1, the valve cover 3 and the mounting ring 5, thereby improving the installation accuracy of the valve assembly 2, and facilitating the installation positioning of the diaphragm 23, thereby improving the assembly efficiency.

[0066] In one embodiment, the electromagnetic assembly 4 includes a coil assembly and a magnetic frame 44. The magnetic frame 44 is a U-shaped structure, which includes a U-shaped bottom plate portion 441 and two side plates 442 connected to each other. The coil assembly is arranged on the bottom plate portion 441 and is located between the bottom plate portion 441 and the valve cover 3. The side plate portion 442 is detachably connected to the valve cover 3.

[0067] Specifically, the coil assembly includes a bracket 41, a coil 43 and an iron core 42. The bracket 41 has a bracket through hole extending in a first direction, and the iron core 42 is installed in the bracket through hole; the coil 43 is installed on the outside of the bracket 41, and the outside of the coil 43 is wrapped with an insulating shell 45 to prevent the coil 43 from leaking electricity. The end of the coil 43 away from the valve cover 3 is connected to an electrical connector, and the electrical connector extends out of the insulating shell 45; the end of the bracket 41 away from the valve cover 3 is connected to the bottom plate 441, and the insulating shell 45, the coil 43 and the bracket 41 are all sandwiched between two side plates 442, and the end of each side plate 442 away from the bottom plate 441 is connected to the valve cover 3, and the bracket 41 and the insulating shell 45 are sandwiched between the bottom plate 441 and the valve cover 3.

[0068] Furthermore, an end of the iron core 42 away from the valve cover 3 is provided with an external thread, the external thread section extends out of the bracket 41 and is screwed with a locking nut 46, and the locking nut 46 is pressed against a side of the bottom plate 441 away from the valve cover 3 to ensure the structural stability of the entire electromagnetic assembly 4. The insulating shell 45 can be formed by wrapping the coil 43 with an insulating material, or can be formed by injection molding.

[0069] It is worth noting that the specific structure and working principle of the coil assembly, as well as the coordination between the coil assembly and the magnetic conductive frame 44 can be set with reference to the existing technology. This is not the focus of this embodiment and will not be described in detail.

[0070] In one embodiment, the side plate 442 is snap-fitted with the valve cover 3 to improve the convenience of disassembly and assembly of the electromagnetic assembly 4 and the valve cover 3 and improve the efficiency of disassembly and assembly. The valve cover 3 includes a main cover body 31, the upper end surface of the main cover body 31 is in contact with the bracket 41, and buckle parts 33 are convexly provided on the opposite side walls of the main cover body 31. A bayonet 4421 is provided on each side plate 442, and the buckle part 33 is snap-fitted in the bayonet 4421.

[0071] In order to improve the smoothness of disassembly and assembly between the side plate 442 and the valve cover 3, the side plate 442 is provided with a notch 4422 connected to the bayonet 4421, and the notch 4422 passes through the side of the side plate 442 away from the bottom plate 441, so that the side plate 442 forms two side portions that can be deformed relative to each other on both sides of the bayonet 4421, thereby improving the convenience of the buckle portion 33 being inserted into or removed from the bayonet 4421 through the deformation of the two side portions.

[0072] In one embodiment, a guide portion 35 is protruded from the buckle portion 33, and the width of the guide portion 35 is smaller than the width of the buckle portion 33, and the width of the guide portion 35 is adapted to the width of the notch 4422, so that when the side plate portion 442 is connected to the valve cover 3, the guide portion 35 is aligned with the notch 4422, and the guide portion 35 is inserted into the notch 4422, so that the buckle portion 33 can be guided to be inserted into the bayonet 4421, thereby improving the assembly efficiency of the electromagnetic assembly 4 and the valve cover 3, and ensuring the assembly reliability between the two. The height of the guide portion 35 protruding from the main cover body 31 is preferably greater than the height of the buckle portion 33 protruding from the main cover body 31.

[0073] like Figure 2 and Figure 4 As shown, the other two opposite sides of the main cover body 31 extend outwardly with fixed plate portions 32, and each side plate portion 442 is located between the two fixed plate portions 32 to better limit the position of the side plate portion 442 relative to the valve cover 3, thereby improving the assembly efficiency and assembly reliability of the electromagnetic assembly 4 on the valve cover 3. The fixed plate portion 32 is provided with mounting holes 322, and the mounting holes 322 are used to penetrate fasteners connected to the valve body 200. Both ends of each fixed plate portion 32 are preferably provided with mounting holes 322, and the four mounting holes 322 are distributed in a rectangular shape to improve the installation stability of the valve cover 3 on the traditional Chinese body.

[0074] like Figure 2 , Figure 3 and Figure 5 As shown, in one embodiment, the mounting ring 5 has an end plate portion 51, the outer periphery of the end plate portion 51 is vertically connected to the outer convex ring portion 52, the end plate portion 51 is sleeved outside the housing 1, and the flange portion 12 abuts against one end surface of the end plate portion 51 facing the valve cover 3. The valve cover 3 includes a main cover body 31, the main cover body 31 is inserted inside the outer convex ring portion 52, so that the flange portion 12 is sandwiched between the end plate portion 51 and the main cover body 31; the flange portion 12 is spaced from the outer convex ring portion 52, so that the outer convex ring portion 52, the end plate portion 51, the main cover body 31 and the flange portion 12 are surrounded to form a sealing ring groove, and the periphery of the diaphragm 23 is pressed tightly in the sealing ring groove.

[0075] By inserting the main cover body 31 inside the outer convex ring portion 52, it is convenient to achieve installation and positioning of the valve cover 3 and the mounting ring 5; and the outer peripheral edge of the diaphragm 23 is clamped between the main cover body 31 and the end plate portion 51 in a first direction, and is clamped between the outer convex ring portion 52 and the flange portion 12 in the radial direction of the diaphragm 23, thereby effectively clamping the diaphragm 23 in all directions, thereby ensuring the accuracy of the installation position of the diaphragm 23, and then ensuring the installation stability of the valve assembly 2, and better achieving the sealing among the valve cover 3, the mounting ring 5 and the housing 1.

[0076] The diaphragm 23 includes a connecting ring portion 231, a deforming portion 232 and a sealing ring portion 233 which are sequentially connected from the inside to the outside. The connecting ring portion 231 is sleeved on the inner shaft 22, and the sealing ring portion 233 is installed in the sealing ring groove. The thickness of the deforming portion 232 is less than the thickness of the connecting ring portion 231 and the thickness of the sealing ring portion 233, so as to ensure the installation reliability of the diaphragm 23 with the inner shaft 22, the valve cover 3 and the housing 1, while ensuring the deformation ability of the diaphragm 23. The deforming portion 232 is an arc-shaped structure with an opening facing away from the electromagnetic assembly 4. The main cover body 31 and the flange portion 12 are arranged at intervals, and the deforming portion 232 passes through the gap between the main cover body 31 and the flange portion 12.

[0077] The outer convex ring portion 52 is connected to a plurality of plug-in plates 54 in a direction toward the electromagnetic assembly 4, and the plurality of plug-in plates 54 are arranged at intervals along the circumferential direction of the housing 1. The fixed plate portion 32 is provided with a plug hole 321, and the plug hole 321 corresponds to the plug-in plate portion 54 one by one, and the plug hole 321 is inserted into the plug hole 321. Specifically, the sealing ring portion 233 of the diaphragm 23 is sandwiched between the main cover 31 and the end plate portion 51.

[0078] The above-mentioned arrangement, through the connection between the plug plate portion 54 and the plug hole 321, can realize the installation positioning between the valve cover 3 and the shell body 1, ensure the installation reliability of the valve cover 3 and the shell body 1 in the circumferential and radial directions of the shell body 1, and improve the assembly efficiency; by inserting the main cover body 31 on the inner side of the outer convex ring portion 52, and the outer peripheral edge of the diaphragm 23 is clamped between the main cover body 31 and the end plate portion 51, it is convenient to realize the compression of the diaphragm 23, and through the elasticity of the diaphragm 23 itself, the sealing of the valve cover 3 and the shell body 1 after assembly is realized.

[0079] In one embodiment, the outer wall of the main cover body 31 and the inner wall of the outer convex ring portion 52 are interference-fitted to ensure the installation tightness and stability of the two, and no additional connection structure is required to achieve the connection between the two, thereby improving the loading and unloading efficiency. The interference fit between the main cover body 31 and the outer convex ring portion 52 can be formed by a riveting process or by controlling the processing accuracy of the two.

[0080] In another embodiment, the end of the plug plate portion 54 extends out of the valve cover 3 and is bent to form a bent portion, and the bent portion is in contact with one end of the valve cover 3 facing the electromagnetic assembly 4. Thus, the valve cover 3 and the diaphragm 23 are sandwiched between the bent portion and the end plate portion 51, and the position and structural stability of the end cover, the housing 1 and the diaphragm 23 in the axial direction of the valve assembly 2 can also be ensured.

[0081] In one embodiment, in order to improve the convenience of assembling the mounting ring 5 and the housing 1, an inner convex ring portion 53 is extended from the inner periphery of the end plate portion 51 in a direction away from the outer convex ring portion 52, and the inner convex ring portion 53 is interference-fitted with the outer side wall of the housing 1. This can increase the contact area between the mounting ring 5 and the housing 1, and improve the assembly stability of the two; and the use of the inner convex ring portion 53 and the housing 1 by interference fit can avoid the use of other fasteners to achieve the connection between the two, simplify the structure, and reduce costs.

[0082] The interference fit can be formed by a riveting process, or by controlling the machining accuracy of the inner convex ring portion 53 and the housing 1. In other embodiments, the mounting ring 5 and the housing 1 can also be connected by snap connection, threaded connection or other installation methods.

[0083] The housing 1 includes a cylindrical housing body 11, one end of the housing body 11 facing the electromagnetic assembly 4 is folded outward to form a flange portion 12, and the other end of the housing body 11 is formed with a valve port 115. The housing body 11 includes a coaxially connected housing main part 111 and a necking part 112, the necking part 112 is coaxially connected to the side of the housing main part 111 away from the flange portion 12, the end of the necking part 112 forms a valve port 115, and the inner diameter of the necking part 112 is smaller than the inner diameter of the housing main part 111. Furthermore, the outer diameter of the necking part 112 is smaller than the outer diameter of the housing main part 111.

[0084] like Figure 6As shown, in one embodiment, a boss portion 234 is protrudingly provided at one end of the deformation portion 232 close to the sealing ring portion 233, and the boss portion 234 is located on the side of the deformation portion 232 away from the valve cover 3. The boss portion 234 is pressed between the flange portion 12 and the main cover body 31, thereby further improving the tightness of the fit between the diaphragm 23 and the valve cover 3 and the housing 1, and improving the sealing performance of the valve cover 3 and the housing 1 after assembly.

[0085] In one embodiment, the housing 1 can be formed by processing a metal tube, such as an aluminum tube or an aluminum alloy tube through punching, shrinking and flanging processes. In another embodiment, the housing 1 can also be formed by integral injection molding.

[0086] In one embodiment, the valve cover 3 is made of aluminum or aluminum alloy, which is light in weight and has good structural strength. In other embodiments, the valve cover 3 can also be made of composite materials or high-strength plastics.

[0087] In one embodiment, the mounting ring 5 may be formed by metal stamping, and the valve cover 3 may be made of plastic.

[0088] like Figure 3 and Figure 5 As shown, in one embodiment, the valve assembly 2 further includes a magnet 25, which is mounted on the valve shaft and located in the second cavity 34. The arrangement of the magnet 25 can enhance the interaction between the valve assembly 2 and the electromagnetic assembly 4, and improve the driving performance of the electromagnetic assembly 4 on the valve assembly 2.

[0089] When the electromagnetic component 4 is not energized, the iron core 42 and the magnet 25 attract each other, so that the proportional valve regulating module 100 is stably maintained in the initial state. In the initial state, the blocking member 24 blocks the valve port 115 to block the airflow; when the electromagnetic component 4 is energized, the valve component 2 moves away from the electromagnetic component 4 under the action of the magnetic field formed by the electromagnetic component 4, and the valve port 115 is opened. The greater the current of the electromagnetic component 4, the greater the opening of the valve port 115. When the intake pressure changes, the pressure of the first cavity 113 changes, resulting in a change in the pressure difference between the first cavity 113 and the second cavity 34. The diaphragm 23 is deformed under the action of the pressure difference, and the pressure of the first cavity 113 is adjusted to achieve a voltage stabilization effect. When the electromagnetic component 4 is powered off again, the valve component 2 is reset under the magnetic attraction of the iron core 42 and the magnet 25, that is, the proportional valve regulating module 100 is maintained in the initial state.

[0090] like Figure 5As shown, in order to improve the installation convenience of the diaphragm 23 and the magnet 25, the valve shaft includes an outer shaft 21 and an inner shaft 22 extending in a first direction, a blocking member 24 is installed at the first end of the outer shaft 21, and the outer shaft 21 has a central through hole. The first end of the inner shaft 22 is inserted into the central through hole of the outer shaft 21, and the second end extends out of the outer shaft 21 toward one end of the electromagnetic assembly 4, and the diaphragm 23 and the magnet 25 are both sleeved on the inner shaft 22.

[0091] In one embodiment, the outer shaft 21 includes a hollow shaft portion 211, and the inner cavity of the hollow shaft portion 211 forms the above-mentioned central through hole. The end of the hollow shaft portion 211 facing the electromagnetic component 4 is connected to a pressing portion 212, and the outer diameter of the hollow shaft portion 211 is less than or equal to the outer diameter of the pressing portion 212. The pressing portion 212 is a frustum-shaped structure, and the large end of the pressing portion 212 faces the electromagnetic component 4 and is arranged opposite to the concave portion of the deformation portion 232. When the pressure difference between the first cavity 113 and the second cavity 34 changes, the deformation portion 232 is deformed to adjust the pressure of the first cavity 113, and the end of the pressing portion 212 can abut against the deformation portion 232 to limit the deformation degree of the deformation portion 232.

[0092] like Figure 5 and Figure 7 As shown, in order to improve the smoothness of the assembly of the inner shaft 22 and the outer shaft 21, in one embodiment, a protrusion 214 is convexly provided on the hole wall of the central through hole, and the first end of the inner shaft 22 has an undercut 222, which is inserted into the central through hole and abuts against the side of the protrusion 214 away from the electromagnetic assembly 4. Therefore, when assembling the inner shaft 22 and the outer shaft 21, the undercut 222 is inserted into the central through hole until the undercut 222 abuts against the protrusion, and when the inner shaft 22 and the outer shaft 21 need to be disassembled, the undercut 222 is pulled out of the central through hole, and the disassembly and assembly are highly convenient.

[0093] The inner shaft 22 includes a main shaft portion 221, and one end of the main shaft portion 221 away from the electromagnetic assembly 4 is connected to the undercut 222, and the undercut 222 includes at least two elastic clamping arms 2221 arranged at intervals along the circumference of the main shaft portion 221, and two adjacent elastic clamping arms 2221 can be relatively opened or closed. A guide slope is provided on the outer side wall of one end of the elastic clamping arm 2221 away from the main shaft portion 221, and the guide slope extends obliquely toward the central axis of the inner shaft 22 in a direction away from the main shaft portion 221, and a clamping groove 2222 is provided on the outer side wall of one end of the elastic clamping arm 2221 close to the main shaft portion 221.

[0094] When the inner shaft 22 is inserted into the outer shaft 21, the protrusion 214 first contacts the guide slope and squeezes the elastic clamp arm 2221 through the guide slope, so that the adjacent elastic clamp arms 2221 are closed, thereby allowing the elastic clamp arm 2221 to pass through the protrusion 214; when the elastic clamp arm 2221 is inserted until the protrusion 214 corresponds to the clamping groove 2222, the protrusion 214 separates from the guide slope and clamps into the clamping groove 2222, and the elastic clamp arm 2221 is reset under the action of its own elastic restoring force, and the protrusion 214 abuts against the groove wall of the clamping groove 2222 away from the electromagnetic assembly 4, thereby limiting the elastic clamp arm 2221 from sliding in the direction toward the electromagnetic assembly 4. The structural setting of the elastic clamp arm 2221 can improve the smoothness of the inner shaft 22 inserted into the outer shaft 21, reduce the probability of the inner shaft 22 arbitrarily falling out of the outer shaft 21, and improve the structural stability of the valve shaft.

[0095] In other embodiments, the undercut 222 may also be an integral conical structure, and the large end of the conical structure is connected to the main shaft portion 221, the outer diameter of the large end of the conical structure is larger than the outer diameter of the main shaft portion 221, and the outer diameter of the small end is smaller than the inner diameter of the protrusion 214, and the inner shaft 22 is made of plastic material, so that the undercut 222 can be deformed under the extrusion of the protrusion 214 and pass through the protrusion 214.

[0096] In one embodiment, in order to improve the convenience of disassembling the inner shaft 22, in one embodiment, a pressing hole 2111 communicating with the central through hole is opened on the outer side wall of the outer shaft 21, and the pressing hole 2111 is arranged opposite to the elastic clamping arm 2221, and the pressing hole 2111 and the elastic clamping arm 2221 are arranged one-to-one. When the elastic clamping arm 2221 needs to be disassembled, the elastic clamping arm 2221 is pressed inwardly through the pressing hole 2111, so that all the elastic clamping arms 2221 are relatively closed, and the undercut 222 can be separated from the protrusion 214.

[0097] A pressing portion 223 is radially extended outward from the second end of the inner shaft 22, a magnet 25 is sleeved on the inner shaft 22, and the diaphragm 23 and the magnet 25 are sandwiched between the pressing portion 223 and the second end of the outer shaft 21. This prevents the diaphragm 23 and the magnet 25 from axially moving relative to the valve shaft, and at the same time, limits the movement of the inner shaft 22 relative to the outer shaft 21 in a direction away from the electromagnetic assembly 4, thereby ensuring the structural stability of the valve shaft after assembly.

[0098] In one embodiment, the connecting ring portion 231 is sleeved on the inner shaft 22 to ensure the tightness of the connecting ring portion 231 on the inner shaft 22. The magnet 25 is installed on the side of the connecting ring portion 231 facing the electromagnetic assembly 4, and the two ends of the connecting ring portion 231 are respectively abutted against the end faces of the magnet 25 and the hollow shaft portion 211 to limit the accuracy of the axial position of the connecting ring portion 231 of the diaphragm 23 relative to the valve shaft. Preferably, a mounting groove is provided on the inner wall of the hollow shaft portion 211, and a plug-in portion is convexly provided at one end of the connecting ring portion 231 away from the magnet 25, and the plug-in portion is inserted into the mounting groove.

[0099] In other embodiments, the positions of the connecting ring portion 231 and the magnet 25 can be interchanged, that is, the connecting ring portion 231 is located between the magnet 25 and the pressing portion 223 .

[0100] The plugging member 24 is a truncated cone structure as a whole, the small end of the truncated cone structure is located inside the housing 1, and the large end extends outside the housing 1. The outer peripheral surface of the truncated cone structure forms a plugging surface, and the side of the valve port 115 is tightly pressed against the plugging surface to achieve the plugging of the valve port 115 by the plugging member 24. The plugging member 24 is made of elastic material such as rubber or silicone.

[0101] In order to improve the convenience of disassembly and assembly of the plugging member 24 and the valve shaft, a hook portion 213 is radially extended outward from one end of the hollow shaft portion 211 away from the pressing portion 212, and an installation slot is provided on the end surface of the plugging member 24. The installation slot is a stepped slot, which includes a large slot portion and a small slot portion. The small slot portion is located at one end of the large slot portion facing the electromagnetic assembly 4, and the hollow shaft portion 211 is inserted into the small slot portion. The hook portion 213 extends into the large slot portion and abuts against the step surface between the large slot portion and the small slot portion. The first end surface of the outer shaft 21 abuts against the bottom of the large slot portion to prevent the plugging member 24 from axially moving relative to the valve shaft.

[0102] It is understandable that the above-mentioned structure of the blocking member 24 and the matching structure between the blocking member 24 and the valve shaft are merely exemplary structures, and other existing forms of blocking member 24 structures and matching structures between the blocking member 24 and the valve shaft can also be applied to the present invention, and the present invention does not impose any limitation on this.

[0103] Embodiment 2

[0104] This embodiment provides a gas proportional valve, which can be used in a gas water heater to adjust the gas flow and pressure.

[0105] like Figure 8 and Fig. 9As shown, the gas proportional valve includes a valve body 200 and a proportional valve regulating module 100 in the first embodiment. The valve body 200 is provided with a valve cavity 201 with openings at both ends and an air inlet channel and an air outlet channel 202 communicating with the valve cavity 201. The valve cavity 201 includes a first chamber 2011 and a second chamber 2012. The air inlet channel communicates with the first chamber 2011, and the air outlet channel 202 communicates with the second chamber 2012. The housing 1 is sealed and inserted into the first chamber 2011, and the valve cover 3 is connected to an open end surface of the valve cavity 201; the air inlet hole 114 communicates with the air inlet channel through the first chamber 2011; when the blocking member 24 opens the valve port 115, the air inlet channel communicates with the air outlet channel 202 through the valve port 115, and when the blocking member 24 blocks the valve port 115, the communication between the air inlet channel and the air outlet channel 202 is blocked at the blocking member 24.

[0106] The gas proportional valve provided in this embodiment adopts the proportional valve regulating module 100 in the first embodiment, so that the proportional valve regulating module 100 can be separately processed, assembled and tested before being installed on the valve body 200, thereby reducing the processing accuracy requirements for the valve body 200, facilitating the maintenance and replacement of the proportional valve regulating module 100, and reducing the design, processing, testing, maintenance and replacement costs of the gas proportional valve.

[0107] In one embodiment, a seal is provided between the outer wall of the housing 1 and the inner wall of the valve body 200, and two seals are provided at intervals along the axial direction of the valve assembly 2, and the two seals are respectively located at the two ends of the first chamber 2011. That is, the communication port between the air intake channel and the valve cavity 201 and the air intake hole 114 are located between the two seals, and the valve port 115 and the valve cover 3 are both located outside the two seals. The provision of two seals is conducive to ensuring that the air intake channel will not be directly connected to the valve port 115 through the valve cavity 201, and better ensuring the sealing performance between the proportional valve regulating module 100 and the valve body 200.

[0108] To improve the installation convenience of the two seals, the valve cavity 201 also includes a third chamber 2013, the inner diameters of the third chamber 2013, the first chamber 2011 and the second chamber 2012 gradually decrease, a first inner step surface is formed between the third chamber 2013 and the first chamber 2011, and a second inner step surface is formed between the first chamber 2011 and the second chamber 2012; the outer wall of the mounting ring 5 is formed with a first outer step surface, the shell 1 has a first outer wall surface and a second outer wall surface with gradually decreasing outer diameters, and a second outer step surface is formed between the first outer wall surface and the second outer wall surface; the mounting ring 5 is located in the third chamber 2013, the first outer wall surface is spaced apart from the cavity wall of the first chamber 2011, the second outer wall surface extends into the second chamber 2012, a first seal 300 is arranged between the first inner step surface and the first outer step surface, and a second seal 400 is arranged between the second inner step surface and the second outer step surface.

[0109] The setting of the first inner step surface, the second inner step surface, the first outer step surface and the second outer step surface is conducive to providing positioning for the installation of the two seals and ensuring the installation reliability of the seals. It is also conducive to ensuring that the shell 1 and the cavity wall of the second chamber 2012 are spaced apart to better achieve the connection between the air inlet 114 and the valve cavity 201.

[0110] Specifically, a first outer step surface is formed between the end plate portion 51 and the inner convex ring portion 53 , an outer side surface of the shell main portion 111 forms a first outer wall surface, and an outer side surface of the necked portion 112 forms a second outer wall surface.

[0111] like Fig.10 As shown, in one embodiment, a local cavity wall of the third cavity wall is provided with a limiting slot 203, and the limiting slot 203 is arranged one-to-one corresponding to the side plate portion 442 of the magnetic frame 44, and the two side plate portions 442 of the magnetic frame 44 extend into the limiting slot 203 to limit the side plate portion 442 from escaping from the valve cover 3 along the radial direction of the mounting ring 5, thereby improving the installation stability of the magnetic frame 44.

[0112] The present embodiment further provides a gas water heater, comprising the above-mentioned gas proportional valve. The gas water heater provided by the present embodiment can reduce the cost of the gas water heater and improve the convenience of disassembly, assembly and maintenance of parts in the gas water heater by adopting the above-mentioned gas proportional valve.

[0113] Gas water heating equipment may include but is not limited to gas water heaters, gas wall-mounted boilers, and the like.

[0114] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0115] The specific contents of the above specific embodiments only express several embodiments of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A proportional valve regulating module, characterized in that: include: A shell (1) having a cavity extending in a first direction and an air inlet (114) communicating with the cavity; a first end of the shell (1) is open to form a valve port (115); and a second end of the shell (1) is folded outward to form a flange portion (12); A valve cover (3) is sealingly mounted on the second end opening of the housing (1) and is enclosed with the housing (1) to form a valve cavity; A mounting ring (5) is detachably mounted on the housing (1), and the mounting ring (5) is connected to the valve cover (3) to clamp the flange portion (12); A valve assembly (2), comprising a valve shaft extending along the first direction, a sealing member (24) sleeved on the first end of the valve shaft, and a diaphragm (23) sleeved on the valve shaft, wherein the peripheral sealing clamp of the diaphragm (23) is arranged between the flange portion (12), the valve cover (3) and the mounting ring (5), and the diaphragm (23) divides the valve cavity into a first cavity (113) and a second cavity (34), and the first cavity (113) is connected to the valve port (115) and the air inlet hole (114); An electromagnetic assembly (4) is mounted on a side of the valve cover (3) away from the housing (1) and is used to drive the valve assembly (2) to move along the first direction so that the blocking member (24) adjusts the opening of the valve port (115).

2. The proportional valve regulating module according to claim 1, characterized in that: The mounting ring (5) comprises an end plate portion (51), the outer periphery of the end plate portion (51) being vertically connected to an outer convex ring portion (52), the outer convex ring portion (52) and the end plate portion (51) being sleeved on the outside of the housing (1); The valve cover (3) comprises a main cover body (31), the main cover body (31) is inserted into the inner side of the outer convex ring portion (52), the flange portion (12) is sandwiched between the end plate portion (51) and the main cover body (31), the outer convex ring portion (52), the end plate portion (51), the main cover body (31) and the flange portion (12) together form a sealing ring groove, and the periphery of the diaphragm (23) is pressed tightly into the sealing ring groove.

3. The proportional valve regulating module according to claim 2, characterized in that: The outer convex ring portion (52) is connected to a plurality of plug-in plate portions (54) along a direction toward the electromagnetic assembly (4), and the plurality of plug-in plate portions (54) are arranged at intervals along the circumference of the end plate portion (51); The main cover body (31) has a fixed plate portion (32) protruding outward, and the main cover body (31) is inserted into the inner side of the outer protruding ring portion (52). The fixed plate portion (32) is provided with an insertion hole (321), and the insertion hole (321) corresponds to the insertion plate portion (54) one by one, and the insertion plate portion (54) is inserted into the insertion hole (321).

4. The proportional valve regulating module according to claim 3, characterized in that: The outer convex ring portion (52) is interference-fitted with the main cover body (31); And / or, the end of the plug plate portion (54) extends out of the valve cover (3) and is bent to form a bent portion, and the bent portion is in contact with one end of the valve cover (3) facing the electromagnetic assembly (4).

5. The proportional valve regulating module according to claim 1, characterized in that: The mounting ring (5) comprises an end plate portion (51) and an inner convex ring portion (53) vertically connected to the inner periphery of the end plate portion (51); the flange portion (12) is sandwiched between the end plate portion (51) and the valve cover (3); and the inner convex ring portion (53) is interference-fitted on the housing (1).

6. The proportional valve regulating module according to any one of claims 1 to 5, characterized in that: The electromagnetic assembly (4) comprises: The magnetic conductive frame (44) comprises a bottom plate portion (441) and two side plate portions (442) connected to each other in a U shape, wherein the two side plate portions (442) are detachably connected to the valve cover (3); The coil assembly is arranged on the bottom plate portion (441) and is located between the bottom plate portion (441) and the valve cover (3).

7. The proportional valve regulating module according to claim 6, characterized in that: The valve cover (3) is provided with buckle parts (33) on two opposite sides thereof, each of the side plate parts (442) is provided with a buckle opening (4421), and the buckle parts (33) are buckled in the buckle opening (4421).

8. The proportional valve regulating module according to claim 7, characterized in that: A guide portion (35) is protruding from the buckle portion (33); a notch (4422) connected to the bayonet (4421) is provided on a side of the side plate portion (442) away from the bottom plate portion (441); the notch (4422) is arranged opposite to the guide portion (35), and the guide portion (35) can slide through the notch (4422) along the first direction.

9. A gas proportional valve, characterized in that: The invention comprises a valve body (200) and a proportional valve regulating module as claimed in any one of claims 1 to 8, wherein the valve body (200) has an open valve cavity (201), an air inlet channel and an air outlet channel (202), the valve cavity (201) comprises a first chamber (2011) and a second chamber (2012), the air inlet channel is communicated with the first chamber (2011), the air outlet channel (202) is communicated with the second chamber (2012), the housing (1) is sealed and inserted into the first chamber (2011), and the valve cover (3) is connected to the open end face of the valve cavity (201); When the blocking member (24) opens the valve port (115), the air inlet channel is connected to the air outlet channel (202) through the valve port (115); when the blocking member (24) blocks the valve port (115), the air inlet channel and the air outlet channel (202) are separated.

10. The gas proportional valve according to claim 9, characterized in that: The valve chamber (201) further comprises a third chamber (2013), the inner diameters of the third chamber (2013), the first chamber (2011) and the second chamber (2012) are successively reduced, a first inner step surface is formed between the third chamber (2013) and the first chamber (2011), and a second inner step surface is formed between the first chamber (2011) and the second chamber (2012); The mounting ring (5) is formed with a first outer step surface; the housing (1) has a first outer wall surface and a second outer wall surface with gradually decreasing outer diameters, and a second outer step surface is formed between the first outer wall surface and the second outer wall surface; The mounting ring (5) is located in the third chamber (2013), the first outer wall surface is spaced apart from the chamber wall of the first chamber (2011), the second outer wall surface extends into the second chamber (2012), a first sealing member (300) is arranged between the first inner step surface and the first outer step surface, and a second sealing member (400) is arranged between the second inner step surface and the second outer step surface.

Images