Plug-in mounting electric valve

Abstract

The utility model provides a plug-in mounting electric valve which comprises a seat body, a base and an integrated valve pipe, the seat body is provided with a mounting cavity, the base is located in the mounting cavity, one end of the valve pipe is located outside the mounting cavity, and the other end of the valve pipe is located in the mounting cavity and connected with the base. According to the scheme, due to the fact that the valve pipe is of the integrated structure, compared with an existing split structure, a valve cover is omitted, the number of parts is reduced, the structure is simplified, the size is reduced, the machining difficulty is lowered, the valve pipe is of the tubular structure, the wall thickness is small, forming is easy, and cost can be lowered.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and more specifically, to a cartridge electric valve. Background Technology

[0002] Electric valves can be used in heat exchange systems of vehicles or other equipment. An electric valve mainly consists of two parts: a seat and a valve body, with part of the valve body installed within the seat. The valve body includes a valve pipe and a valve seat that are fixedly connected. The valve seat further includes a valve cover and a base that are interconnected. The valve pipe and valve cover are welded together, the valve cover and base are threaded together, and the base and valve body are threaded together, resulting in a large size and high cost for electric valves. Utility Model Content

[0003] This invention provides a cartridge electric valve to solve the problems of large size and high cost of existing cartridge electric valves.

[0004] To address the aforementioned problems, this utility model provides a cartridge electric valve, comprising a seat, a base, and an integrated valve tube. The seat has a mounting cavity, the base is located inside the mounting cavity, one end of the valve tube is located outside the mounting cavity, and the other end is located inside the mounting cavity and connected to the base.

[0005] Furthermore, the valve pipe includes a first pipe section and a second pipe section connected to each other. The diameter of the second pipe section is smaller than that of the first pipe section. The connection position between the first pipe section and the second pipe section has a stepped surface. The cartridge electric valve also includes a limiting element, which is connected to the seat body. The limiting element and the stepped surface are matched for limiting the axial movement of the valve pipe.

[0006] Furthermore, the seat has an assembly hole communicating with the mounting cavity, the limiting member is an annular structure, the limiting member is sleeved on the outer periphery of the second pipe section and located inside the assembly hole, the outer wall of the limiting member and the inner wall of the assembly hole are sealed together; the inner wall of the limiting member and the outer wall of the second pipe section are sealed together, and / or the end face and the stepped surface of the limiting member are sealed together.

[0007] Furthermore, the outer wall of the limiting member or the inner wall of the assembly hole has a first sealing groove, and the cartridge electric valve also includes a first sealing ring located in the first sealing groove; the inner wall of the limiting member has a second sealing groove, and the cartridge electric valve also includes a second sealing ring located in the second sealing groove; or, the inner wall of the limiting member and the outer wall of the second pipe section are welded, and / or the end face and the stepped surface of the limiting member are welded.

[0008] Furthermore, the inner wall of the assembly hole has a groove, and the cartridge electric valve also includes a retaining ring, a part of which is inserted into the groove, and the end face of the retaining ring is in a limiting fit with the end face of the limiting member on the side opposite to the base; or, the inner wall of the assembly hole has an internal thread, the outer wall of the limiting member has an external thread, and the limiting member and the assembly hole are threaded together.

[0009] Furthermore, the valve tube includes a first pipe section, the seat has an assembly hole communicating with the mounting cavity, a portion of the first pipe section is located in the assembly hole, the inner wall of the assembly hole has a first sealing groove, and the cartridge electric valve also includes a first sealing ring, the first sealing ring is located in the first sealing groove and is sleeved on the first pipe section.

[0010] Furthermore, the valve pipe includes a second pipe section connected to the first pipe section, the diameter of the second pipe section being smaller than the diameter of the first pipe section, the inner wall of the assembly hole having a groove, the cartridge electric valve also including a retaining spring, a part of the retaining spring being inserted into the groove, the connection position of the first pipe section and the second pipe section having a stepped surface, the end face of the retaining spring being in a limiting fit with the stepped surface.

[0011] Furthermore, the valve tube is made of stainless steel and is manufactured through a metal stretching process.

[0012] Furthermore, the mounting cavity has a limiting surface, which abuts against the end face of the base and / or the end face of the valve tube; the base and the valve tube are welded together.

[0013] Furthermore, the valve pipe includes a first pipe section and a second pipe section connected to each other, the diameter of the second pipe section is smaller than the diameter of the first pipe section, the mounting cavity includes a first fluid cavity and a second fluid cavity, a portion of the first pipe section is located in the first fluid cavity, a portion of the base is located in the second fluid cavity, the outer wall of the base or the inner wall of the second fluid cavity has a third sealing groove, and the cartridge electric valve also includes a third sealing ring, the third sealing ring is located in the third sealing groove.

[0014] Furthermore, the base has a valve port, the seat body has a first channel and a second channel, the first channel is connected to the mounting cavity, the second channel is connected to the valve port, and the valve tube has multiple flow holes in its circumference, which are connected to the mounting cavity; wherein, when the valve port is open, the first channel and the second channel are connected, and when the valve port is closed, the first channel and the second channel are disconnected.

[0015] Furthermore, the cartridge electric valve also includes a movable part disposed within the cavity of the valve tube, and the base has a valve port. The movable part is used to open and close the valve port.

[0016] Furthermore, the valve pipe includes a first pipe section and a second pipe section connected to each other, and the moving parts include a first iron core assembly and a piston assembly. The first iron core assembly is movably disposed in the second pipe section, and the piston assembly is movably disposed in the first pipe section. The piston assembly is used to open and close the valve port. The cartridge electric valve also includes a second iron core, at least a portion of which is located in the second pipe section and is attracted to or separated from the first iron core assembly.

[0017] In this solution, the valve tube is an integral structure, which eliminates the valve cover, reduces the number of parts, simplifies the structure, reduces the volume, and lowers the processing difficulty compared to the existing split structure. Furthermore, the valve tube adopts a tubular structure with thinner walls, making it simple to form and reducing costs. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of the structure of the cartridge electric valve provided in Embodiment 1 of this utility model is shown;

[0020] Figure 2 It shows Figure 1 A cross-sectional view of the cartridge-mounted electric valve in the image;

[0021] Figure 3 It shows Figure 2 A schematic diagram of the valve pipe structure;

[0022] Figure 4 It shows Figure 2 A partial enlarged view of the cartridge-mounted electric valve;

[0023] Figure 5 It shows Figure 2 A schematic diagram of the structure of the base;

[0024] Figure 6 A cross-sectional view of the cartridge electric valve provided in Embodiment 2 of this utility model is shown;

[0025] Figure 7 It shows Figure 6 A partial enlarged view of the cartridge-mounted electric valve.

[0026] The above figures include the following reference numerals:

[0027] 10. Seat body; 11. Mounting cavity; 111. Limiting surface; 112. First fluid cavity; 113. Second fluid cavity; 1131. Third sealing groove; 12. Assembly hole; 121. Slot; 13. First channel; 14. Second channel;

[0028] 20. Base; 21. Valve port;

[0029] 30. Valve pipe; 31. First pipe section; 311. Flow hole; 32. Second pipe section; 33. Stepped surface;

[0030] 40. Limiting component; 41. First sealing groove; 42. Second sealing groove;

[0031] 51. First sealing ring; 52. Second sealing ring; 53. Third sealing ring; 54. Snap ring;

[0032] 60. Moving parts; 61. First iron core assembly; 62. Piston assembly;

[0033] 70. Second iron core;

[0034] 81. Bracket; 82. Coil assembly; 83. Fastener. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0036] like Figures 1 to 5 As shown, Embodiment 1 of this utility model provides a cartridge electric valve, including a seat 10, a base 20, and an integrated valve tube 30. The seat 10 has a mounting cavity 11, the base 20 is located inside the mounting cavity 11, one end of the valve tube 30 is located outside the mounting cavity 11, and the other end is located inside the mounting cavity 11 and connected to the base 20. The base 20 and the valve tube 30 are connected as a whole and then detachably connected to the mounting cavity 11, or the base 20 is fixedly connected to the mounting cavity 11.

[0037] In this solution, the valve tube is an integral structure, which eliminates the valve cover, reduces the number of parts, simplifies the structure, reduces the volume, and lowers the processing difficulty compared to the existing split structure. Furthermore, the valve tube adopts a tubular structure with thinner walls, making it simple to form and reducing costs.

[0038] like Figure 3 and Figure 4 As shown, the valve pipe 30 includes a first pipe section 31 and a second pipe section 32 connected to each other. The diameter of the second pipe section 32 is smaller than the diameter of the first pipe section 31. The connection position of the first pipe section 31 and the second pipe section 32 has a stepped surface 33. The cartridge electric valve also includes a limiting member 40, which is connected to the seat body 10. The limiting member 40 and the stepped surface 33 are matched to limit the valve pipe 30 axially.

[0039] In this design, the first section 31 and the second section 32 of the integrated valve tube 30 form cavities with different diameters. Corresponding components can be installed in these cavities to open and close the valve port 21 via the movement of these components. Because the valve tube 30 is an integrated structure, it reduces the number of parts compared to existing split structures, simplifies the structure, reduces processing difficulty, and thus lowers production costs. Furthermore, the tubular structure of the valve tube 30 results in a thinner wall, reducing its volume and thus minimizing the space occupied by the cartridge electric valve. The cartridge electric valve can be configured as a solenoid valve or an electronic expansion valve according to usage requirements.

[0040] In this embodiment, because the first pipe section 31 and the second pipe section 32 have different diameters, a stepped surface 33 is formed at the connection position. The limiting member 40 connected to the seat 10 engages with the stepped surface 33 to effectively prevent axial movement of the valve pipe 30 under high pressure, high flow rate, vibration, or external force. This ensures that the valve pipe 30 always maintains the correct position within the seat 10, improving the operational stability and reliability of the cartridge electric valve. Furthermore, the limiting engagement between the limiting member 40 and the stepped surface 33 also avoids frequent friction caused by axial movement of the valve pipe 30, thus preventing accelerated wear of internal parts, reducing wear, and extending service life.

[0041] like Figure 4 and Figure 5 As shown, the seat 10 has an assembly hole 12 communicating with the mounting cavity 11. The limiting member 40 is an annular structure. The limiting member 40 is sleeved on the outer periphery of the second pipe section 32 and located inside the assembly hole 12. The outer wall of the limiting member 40 and the inner wall of the assembly hole 12 are sealed together. The inner wall of the limiting member 40 is sealed together with the outer wall of the second pipe section 32, and / or the end face of the limiting member 40 and the stepped surface 33 are sealed together.

[0042] In this embodiment, the limiting member 40 is an annular structure and is sleeved on the second pipe section 32, located inside the assembly hole 12. It can be configured with the following three sealing fits: sealing at two interfaces—the outer wall of the limiting member 40 and the inner wall of the assembly hole 12, and the inner wall of the limiting member 40 and the outer wall of the second pipe section 32; sealing at two interfaces—the outer wall of the limiting member 40 and the inner wall of the assembly hole 12, and the end face of the limiting member 40 and the stepped surface 33; and sealing at three interfaces—the outer wall of the limiting member 40 and the inner wall of the assembly hole 12, the inner wall of the limiting member 40 and the outer wall of the second pipe section 32, and the end face of the limiting member 40 and the stepped surface 33. All three configurations form multiple sealing barriers, effectively preventing fluid leakage from the assembly hole 12 and improving the sealing performance of the cartridge electric valve.

[0043] The limiting member 40, fitted onto the second pipe section 32, can limit the axial movement of the second pipe section 32 through the cooperation of its end face and the stepped surface 33, thereby limiting the axial movement of the entire valve pipe 30. Furthermore, the annular structure design of the limiting member 40 can evenly distribute external force to the inner wall of the assembly hole 12 and the outer wall of the second pipe section 32, preventing excessive stress in any one area from causing damage to parts or sealing failure.

[0044] like Figure 4 As shown, in Embodiment 1, the outer wall of the limiting member 40 or the inner wall of the assembly hole 12 has a first sealing groove 41, and the cartridge electric valve also includes a first sealing ring 51, which is located in the first sealing groove 41; the inner wall of the limiting member 40 has a second sealing groove 42, and the cartridge electric valve also includes a second sealing ring 52, which is located in the second sealing groove 42.

[0045] In this embodiment, the first sealing ring 51 is located within the first sealing groove 41 to achieve a seal between the limiting member 40 and the assembly hole 12; the second sealing ring 52 is located within the second sealing groove 42 to achieve a seal between the limiting member 40 and the second pipe section 32. This sealing design can prevent fluid leakage from both the inner and outer interfaces, improving the sealing performance of the cartridge electric valve.

[0046] Or, such as Figure 6 and Figure 7 As shown, in Embodiment 2, the inner wall of the limiting member 40 and the outer wall of the second pipe section 32 are welded, and / or the end face of the limiting member 40 and the stepped surface 33 are welded. Welding the inner wall of the limiting member 40 and the outer wall of the second pipe section 32, and welding the end face of the limiting member 40 and the stepped surface 33, can form a seal, eliminating the gap between the limiting member 40 and the outer wall of the second pipe section 32, and / or eliminating the gap between the limiting member 40 and the stepped surface 33, fundamentally preventing fluid leakage and improving the sealing performance of the cartridge electric valve. Moreover, after welding, the connection between the limiting member 40 and the second pipe section 32 is more secure, and / or the connection between the limiting member 40 and the stepped surface 33 is more secure, which can avoid loosening caused by vibration or external force, thereby ensuring a long-term stable sealing effect.

[0047] like Figure 4 and Figure 5As shown, in Embodiment 1, the inner wall of the assembly hole 12 has a groove 121, and the cartridge electric valve also includes a retaining spring 54. A part of the retaining spring 54 is inserted into the groove 121, and the end face of the retaining spring 54 is limited and engaged with the end face of the limiting member 40 on the side away from the valve port 21. In this embodiment, a groove 121 is provided on the inner wall of the assembly hole 12, and the retaining spring 54 is inserted into the groove 121. By the limited and engaged relationship between the end face of the retaining spring 54 and the end face of the limiting member 40 on the side away from the base 20, the limiting member 40 can be effectively fixed in the assembly hole 12, preventing the limiting member 40 from shifting or loosening during operation.

[0048] Or, such as Figure 6 and Figure 7 As shown, in Embodiment 2, the inner wall of the assembly hole 12 has an internal thread, and the outer wall of the limiting member 40 has an external thread. The limiting member 40 and the assembly hole 12 are threadedly connected. By providing an internal thread on the inner wall of the assembly hole 12 and an external thread on the outer wall of the limiting member 40, the threaded connection prevents the limiting member 40 from shifting or loosening. Moreover, the threaded connection allows for fine-tuning of the position of the limiting member 40 as needed.

[0049] Both of the above methods can be used to fix the limiting component 40, which allows the cartridge electric valve to flexibly adapt to different working requirements and improves the flexibility of the cartridge electric valve.

[0050] A portion of the first pipe section 31 is located within the assembly hole 12. The inner wall of the assembly hole 12 has a first sealing groove 41. The cartridge electric valve also includes a first sealing ring 51, which is located within the first sealing groove 41 and fitted onto the first pipe section 31.

[0051] The inner wall of the assembly hole 12 has a groove 121. The cartridge electric valve also includes a retaining ring 54. A part of the retaining ring 54 is inserted into the groove 121. The connection position of the first pipe section 31 and the second pipe section 32 has a stepped surface 33. The end face of the retaining ring 54 is in a limiting fit with the stepped surface 33.

[0052] In an embodiment not shown in this application, the seat 10 has an assembly hole 12 communicating with the mounting cavity 11. A portion of the first pipe section 31 is located within the assembly hole 12. The inner wall of the assembly hole 12 has a first sealing groove 41. A first sealing ring 51 is located within the first sealing groove 41 and sleeved on the first pipe section 31. A retaining ring 54 is engaged in the retaining groove 121 of the assembly hole 12, and the end face of the retaining ring 54 is matched with the stepped surface 33 for limiting. This allows for a sealing effect without the need for a limiting member 40. The first sealing ring 51 can eliminate the gap between the first pipe section 31 and the assembly hole 12, reducing friction between them and providing sealing performance while extending the service life of the parts. The retaining ring 54 can fix the first pipe section 31 within the assembly hole 12, preventing axial displacement or loosening of the first pipe section 31 and ensuring the stability of the valve pipe 30. This method achieves excellent sealing and fixation while reducing the number of parts, simplifying the structure, reducing processing difficulty, thereby lowering production costs, and also reducing space requirements.

[0053] Furthermore, the valve tube 30 is made of stainless steel and is manufactured through a metal stretching process.

[0054] In this embodiment, the valve tube 30 is made of stainless steel, which has excellent corrosion resistance, rust resistance, and high temperature resistance, enabling it to be used for a long time in various environments. This reduces the impact of corrosion, rust, and high temperatures on the valve tube 30. Stainless steel also has good strength, allowing for long-term use and preventing surface wear during extended use, thus reducing costs. Furthermore, the valve tube 30 is manufactured using a metal stretching process, ensuring consistent shape and performance for each valve tube 30 and minimizing errors.

[0055] like Figure 4 and Figure 5 As shown, the mounting cavity 11 has a limiting surface 111, which abuts against the end face of the base 20 and / or the end face of the first pipe section 31; at least a portion of the base 20 is located inside the first pipe section 31, and the base 20 and the first pipe section 31 are welded together.

[0056] In this embodiment, the limiting surface 111 within the mounting cavity 11 abuts against the end face of the base 20 and / or the end face of the first pipe segment 31, providing accurate axial positioning and ensuring the accurate positioning of the base 20 and / or the first pipe segment 31. Welding the base 20 and the first pipe segment 31 together provides a robust connection, preventing loosening or detachment of the connection between the valve pipe 30 and the base 20, and reducing the risk of fluid leakage from the connection point.

[0057] like Figure 4 and Figure 5As shown, the valve pipe 30 includes a first pipe section 31 and a second pipe section 32 connected to each other. The diameter of the second pipe section 32 is smaller than the diameter of the first pipe section 31. The mounting cavity 11 includes a first fluid cavity 112 and a second fluid cavity 113. Part of the first pipe section 31 is located in the first fluid cavity 112, and part of the base 20 is located in the second fluid cavity 113. The outer wall of the base 20 or the inner wall of the second fluid cavity 113 has a third sealing groove 1131. The cartridge electric valve also includes a third sealing ring 53, which is located in the third sealing groove 1131.

[0058] In this embodiment, the third sealing ring 53 is located within the third sealing groove 1131, forming an effective sealing barrier between the base 20 and the second fluid cavity 113. The third sealing ring 53 can prevent fluid leakage.

[0059] like Figure 2 and Figure 3 As shown, the base 20 has a valve port 21, and the seat body 10 has a first channel 13 and a second channel 14. The first channel 13 is connected to the mounting cavity 11, and the second channel 14 is connected to the valve port 21. The valve tube 30 has a plurality of flow holes 311 in its circumferential direction, and the flow holes 311 are connected to the mounting cavity 11. When the valve port 21 is open, the first channel 13 and the second channel 14 are connected, and when the valve port 21 is closed, the first channel 13 and the second channel 14 are disconnected.

[0060] In this embodiment, when valve port 21 is open, the first channel 13 and the second channel 14 are connected, allowing fluid to flow from the first fluid chamber 112 through the first channel 13 to valve port 21. When valve port 21 is closed, the connection between the first channel 13 and the second channel 14 is severed, interrupting fluid flow. Multiple flow holes 311 on the first pipe section 31 are connected to the mounting cavity 11, allowing fluid to enter the mounting cavity 11 from multiple directions. This design enhances the flexibility of the cartridge-mounted electric valve, enabling it to adapt to more diverse fluid flow requirements.

[0061] like Figure 2 and Figure 3 As shown, the cartridge electric valve also includes a movable part 60, which is disposed in the cavity of the valve tube 30. The movable part 60 is used to open and close the valve port 21.

[0062] In this embodiment, the movable component 60 can precisely control the opening and closing states of the valve port 21. Through the movement of the movable component 60, the valve port 21 can switch between two states: fully open and fully closed.

[0063] Furthermore, the valve pipe 30 includes a first pipe section 31 and a second pipe section 32 connected to each other. The movable part 60 includes a first iron core assembly 61 and a piston assembly 62. The first iron core assembly 61 is movably disposed within the second pipe section 32, and the piston assembly 62 is movably disposed within the first pipe section 31. The piston assembly 62 is used to open and close the valve port 21. The cartridge electric valve also includes a second iron core 70, at least a portion of which is located within the second pipe section 32 and is attracted to or separated from the first iron core assembly 61.

[0064] In this embodiment, the first core assembly 61 and the piston assembly 62 enable the cartridge electric valve to precisely control the opening and closing of the valve port 21. The movement of the first core assembly 61 within the second pipe section 32 coordinates with the movement of the piston assembly 62. The second core 70 controls the reciprocating movement of the first core assembly 61 and also ensures that the opening of the second pipe section 32 is sealed, effectively preventing fluid leakage from the second pipe section 32, thereby increasing the sealing performance and safety of the cartridge electric valve. When the piston assembly 62 completely closes the valve port 21, fluid cannot flow through the valve port 21, and because the second core 70 seals the opening of the second pipe section 32, fluid cannot leak from the second pipe section 32 either.

[0065] The cartridge electric valve also includes a bracket 81 and a coil assembly 82. The coil assembly 82 is sleeved on the second pipe section 32 and installed on the bracket 81. The bracket 81 and the seat 10 are in circumferential limiting fit. The cartridge electric valve also includes a second iron core 70. The second iron core 70 is fixedly connected to the second pipe section 32 and blocks the opening of the second pipe section 32. The bracket 81 is fixedly connected to the second iron core 70 by fasteners 83.

[0066] In this embodiment, the bracket 81 provides a stable mounting position and support for the coil assembly 82. By fitting the coil assembly 82 onto the second pipe section 32 and mounting it on the bracket 81, the bracket 81 effectively maintains the position of the coil assembly 82, preventing displacement due to vibration or pressure changes during operation. This helps ensure the stability and reliability of the cartridge electric valve during operation, avoiding functional damage or inaccurate response due to instability of the coil assembly 82. The circumferential limiting fit between the bracket 81 and the seat 10 ensures that the bracket 81 will not loosen or shift. The circumferential limiting design allows the bracket 81 to be firmly fitted with the seat 10, preventing the coil assembly 82 from moving in the circumferential direction. This allows it to better exert its electromagnetic effect to drive the second iron core 70 to generate magnetic force, thereby moving the first iron core assembly 61 to move the piston assembly 62 and control the opening and closing of the valve port 21. Moreover, the bracket 81 is fixedly connected to the second iron core 70 by fasteners 83. This fixing method is simple and convenient, saving time during installation and improving efficiency.

[0067] The above description is merely an optional embodiment of this solution and is not intended to limit the solution. Various modifications and variations can be made to this solution by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this solution should be included within the scope of protection of this solution.

[0068] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0069] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as exemplary only and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0070] In the description of this solution, it should be understood that directional terms such as "front, back, up, down, left, right," "horizontal, vertical, horizontal," and "top, bottom," indicating orientations or positional relationships, are generally based on the orientations or positional relationships shown in the accompanying drawings. They are used solely for the convenience of describing this solution and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this solution. The directional terms "inner" and "outer" refer to the inner or outer contours relative to the outline of each component itself. For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," and "above" may be used here to describe the spatial positional relationship between a device or feature as shown in the figures and other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if a device in the accompanying drawings is inverted, a device described as "above" or "on top of" other devices or structures will subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0071] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this solution.

Claims

1. A cartridge-mounted electric valve, characterized in that, It includes a seat (10), a base (20) and an integral valve tube (30). The seat (10) has a mounting cavity (11). The base (20) is located inside the mounting cavity (11). One end of the valve tube (30) is located outside the mounting cavity (11), and the other end is located inside the mounting cavity (11) and connected to the base (20).

2. The cartridge-mounted electric valve according to claim 1, characterized in that, The valve pipe (30) includes a first pipe section (31) and a second pipe section (32) connected to each other. The diameter of the second pipe section (32) is smaller than that of the first pipe section (31). The connection position between the first pipe section (31) and the second pipe section (32) has a stepped surface (33). The cartridge electric valve also includes a limiting member (40). The limiting member (40) is connected to the seat (10). The limiting member (40) and the stepped surface (33) are in a limiting fit to limit the axial movement of the valve pipe (30).

3. The cartridge-mounted electric valve according to claim 2, characterized in that, The seat (10) has an assembly hole (12) communicating with the mounting cavity (11). The limiting member (40) is an annular structure. The limiting member (40) is sleeved on the outer periphery of the second pipe section (32) and located inside the assembly hole (12). The outer wall of the limiting member (40) and the inner wall of the assembly hole (12) are sealed together. The inner wall of the limiting member (40) and the outer wall of the second pipe section (32) are sealed together. And / or the end face of the limiting member (40) and the stepped surface (33) are sealed together.

4. The cartridge-mounted electric valve according to claim 3, characterized in that, The outer wall of the limiting member (40) or the inner wall of the assembly hole (12) has a first sealing groove (41), and the cartridge electric valve further includes a first sealing ring (51), which is located in the first sealing groove (41). The inner wall of the limiting member (40) has a second sealing groove (42), and the cartridge electric valve further includes a second sealing ring (52), which is located in the second sealing groove (42); or, the inner wall of the limiting member (40) and the outer wall of the second pipe section (32) are welded, and / or the end face of the limiting member (40) and the stepped surface (33) are welded.

5. The cartridge-mounted electric valve according to claim 3, characterized in that, The inner wall of the assembly hole (12) has a slot (121), and the cartridge electric valve also includes a retaining ring (54). A portion of the retaining ring (54) is inserted into the slot (121), and the end face of the retaining ring (54) is limited and engaged with the end face of the limiting member (40) on the side away from the base (20). Alternatively, the inner wall of the assembly hole (12) has an internal thread, the outer wall of the limiting member (40) has an external thread, and the limiting member (40) and the assembly hole (12) are threaded together.

6. The cartridge-mounted electric valve according to claim 1, characterized in that, The valve tube (30) includes a first pipe section (31), the seat (10) has an assembly hole (12) communicating with the mounting cavity (11), a portion of the first pipe section (31) is located in the assembly hole (12), the inner wall of the assembly hole (12) has a first sealing groove (41), the cartridge electric valve also includes a first sealing ring (51), the first sealing ring (51) is located in the first sealing groove (41) and sleeved on the first pipe section (31).

7. The cartridge-mounted electric valve according to claim 6, characterized in that, The valve pipe (30) includes a second pipe section (32) connected to the first pipe section (31), the diameter of the second pipe section (32) is smaller than the diameter of the first pipe section (31), the inner wall of the assembly hole (12) has a groove (121), the cartridge electric valve also includes a retaining ring (54), a part of the retaining ring (54) is inserted into the groove (121), the connection position of the first pipe section (31) and the second pipe section (32) has a stepped surface (33), and the end face of the retaining ring (54) is limited to the stepped surface (33).

8. The cartridge-mounted electric valve according to claim 1, characterized in that, The valve tube (30) is made of stainless steel and is manufactured by a metal stretching process.

9. The cartridge-mounted electric valve according to claim 1, characterized in that, The mounting cavity (11) has a limiting surface (111), which abuts against the end face of the base (20) and / or the end face of the valve tube (30); the base (20) and the valve tube (30) are welded together.

10. The cartridge-mounted electric valve according to claim 1, characterized in that, The valve pipe (30) includes a first pipe section (31) and a second pipe section (32) connected to each other. The diameter of the second pipe section (32) is smaller than that of the first pipe section (31). The mounting cavity (11) includes a first fluid cavity (112) and a second fluid cavity (113). Part of the first pipe section (31) is located in the first fluid cavity (112), and part of the base (20) is located in the second fluid cavity (113). The outer wall of the base (20) or the inner wall of the second fluid cavity (113) has a third sealing groove (1131). The cartridge electric valve also includes a third sealing ring (53), which is located in the third sealing groove (1131).

11. The cartridge-mounted electric valve according to claim 1, characterized in that, The base (20) has a valve port (21), and the seat body (10) has a first channel (13) and a second channel (14). The first channel (13) is connected to the mounting cavity (11), and the second channel (14) is connected to the valve port (21). The valve tube (30) has a plurality of flow holes (311) in its circumferential direction, and the flow holes (311) are connected to the mounting cavity (11). When the valve port (21) is open, the first channel (13) and the second channel (14) are connected, and when the valve port (21) is closed, the first channel (13) and the second channel (14) are disconnected.

12. The cartridge-mounted electric valve according to claim 1, characterized in that, The cartridge electric valve also includes a movable part (60) disposed in the cavity of the valve tube (30), the base (20) has a valve port (21), and the movable part (60) is used to open and close the valve port (21).

13. The cartridge-mounted electric valve according to claim 12, characterized in that, The valve pipe (30) includes a first pipe section (31) and a second pipe section (32) connected to each other. The movable part (60) includes a first iron core assembly (61) and a piston assembly (62). The first iron core assembly (61) is movably disposed in the second pipe section (32), and the piston assembly (62) is movably disposed in the first pipe section (31). The piston assembly (62) is used to open and close the valve port (21). The cartridge electric valve also includes a second iron core (70). At least a portion of the second iron core (70) is located in the second pipe section (32) and is attracted to or separated from the first iron core assembly (61).

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