Control valve assembly and electromagnetic valve with same

Abstract

The utility model provides a control valve assembly and an electromagnetic valve with the control valve assembly, and the control valve assembly comprises a valve body assembly which is provided with a circulation cavity, and the circulation cavity is provided with a valve port; the piston assembly is arranged in the circulation cavity, the piston assembly is provided with a sealing end, the sealing end is arranged corresponding to the valve port, and the sealing end can move relative to the valve port so as to plug or open the valve port; and the fixing assembly is arranged on the periphery of the piston assembly, the piston assembly is arranged in the circulation cavity through the fixing assembly, and a channel for fluid circulation is formed between the fixing assembly and the inner wall of the circulation cavity. According to the technical scheme, the problem that in the prior art, the flow resistance is large in the process that fluid flows through the electromagnetic valve can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of control valves, in particular to a control valve component and a solenoid valve having the same. Background Art

[0002] The solenoid valve in the prior art generally includes a valve body assembly and a piston assembly, wherein the valve body assembly has a valve port and a flow cavity that are interconnected, and the piston assembly is movably arranged in the flow cavity to block or open the valve port to achieve control of the fluid on and off. In the prior art, the piston assembly includes a piston and a spring that provides elastic force to the piston, and the piston and the spring are arranged in the flow cavity, which requires a certain installation space. When the fluid flows through the valve port to the installation space of the piston assembly, even if the piston does not completely block the flow cavity, such as the technical solution provided by the application No. 201810789692.0, which is named a pilot-operated solenoid valve, or the technical solution provided by the application No. 201120490310.8, which is named a two-way flow solenoid valve, when the fluid flows through the valve port, it needs to flow through the piston assembly, and the flow path of the fluid often needs to undergo a turn or multiple changes in the flow area to avoid the piston assembly, which will increase the flow resistance of the fluid and affect the flow efficiency of the fluid in the heat pump system. Utility Model Content

[0003] The utility model provides a control valve component and a solenoid valve having the same, so as to solve the problem of large flow resistance of fluid in the process of flowing through the solenoid valve in the prior art.

[0004] According to one aspect of the utility model, a control valve assembly is provided, which includes: a valve body assembly, having a flow chamber, the flow chamber having a valve port; a piston assembly, arranged in the flow chamber, the piston assembly having a sealing end, the sealing end being arranged corresponding to the valve port, the sealing end being able to move relative to the valve port to block or open the valve port; a fixing assembly, arranged on the outer periphery of the piston assembly, the piston assembly being arranged in the flow chamber through the fixing assembly, and a channel for fluid circulation is provided between the fixing assembly and the inner wall of the flow chamber.

[0005] Furthermore, the fixing assembly has a fixing hole, the piston assembly is inserted into the fixing hole, and the outer periphery of the fixing hole has a channel for fluid circulation.

[0006] Furthermore, the fixing hole is coaxially arranged with the first valve port and the second valve port.

[0007] Furthermore, the fixing assembly includes a plurality of fixing plates, which are spaced apart and distributed along the axial direction of the flow cavity, and each fixing plate is provided with a fixing hole.

[0008] Furthermore, the fixing plate includes: a connecting ring, which is provided with a fixing hole; a connecting rod, which is provided with multiple connecting rods, and the multiple connecting rods are arranged on the side wall of the connecting ring in annular intervals, and the connecting ring is fixedly connected to the inner wall of the valve body assembly through the connecting rods.

[0009] Furthermore, along the flow direction of the fluid, the projections of the plurality of fixed plates overlap.

[0010] Furthermore, the number of connecting rods arranged on each fixing plate is less than or equal to 4.

[0011] Furthermore, a plurality of fixing plates are symmetrically arranged along the axial perpendicular midline of the valve body assembly.

[0012] Furthermore, the fixing plate includes a plurality of connecting blocks, which are distributed at annular intervals on the outer circumference of the piston assembly, and the connecting blocks are fixedly connected to the piston assembly. Each connecting block is provided with a connecting protrusion, and the connecting protrusion is fixedly connected to the inner wall of the valve body assembly.

[0013] According to another aspect of the utility model, a solenoid valve is provided, and the solenoid valve includes the above-mentioned control valve assembly.

[0014] By applying the technical solution of the utility model, the piston assembly is fixed in the circulation chamber by the fixing assembly. When the fluid flows through the valve port, the fluid in the circulation chamber can flow through the channel formed between the fixing assembly and the inner wall of the circulation chamber. Since the fixing assembly is arranged on the periphery of the piston assembly, the fluid can pass through the two ends of the circulation chamber along the periphery of the piston assembly. The channel through which the fluid flows does not turn in the circulation direction, and there is no need to significantly change the circulation area of ​​the flow channel due to the need to avoid the piston assembly. In this way, the flow resistance of the piston assembly to the fluid can be reduced, thereby ensuring the circulation efficiency of the fluid when flowing through the circulation chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 The structure schematic diagram of the solenoid valve provided by the utility model is shown when the fluid flows from the first connecting pipe to the second connecting pipe and the piston assembly is in a conducting state;

[0017] Figure 2 The structure schematic diagram of the solenoid valve provided by the utility model is shown when the fluid flows from the first connecting pipe to the second connecting pipe and the piston assembly is in a blocking state;

[0018] Figure 3The structure schematic diagram of the solenoid valve provided by the utility model is shown when the fluid flows from the second connecting pipe to the first connecting pipe and the piston assembly is in an open state;

[0019] Figure 4 The structure schematic diagram of the solenoid valve provided by the utility model is shown when the fluid flows from the second connecting pipe to the first connecting pipe and the piston assembly is in a blocking state;

[0020] Figure 5 A schematic diagram of the structure of a support plate provided in an embodiment of the utility model is shown;

[0021] Figure 6 A structural schematic diagram showing another perspective of the support plate provided by an embodiment of the utility model is shown.

[0022] The above drawings include the following reference numerals:

[0023] 1. First takeover; 2. Second takeover;

[0024] 100, circulation chamber; 200, piston chamber; 300, pilot valve chamber;

[0025] 10. Valve body assembly; 101. First valve port; 102. Second valve port;

[0026] 20. Piston assembly;

[0027] 21. first piston; 22. second piston; 23. piston sleeve; 24. elastic member;

[0028] 30. pilot valve assembly; 301. first flow channel; 302. second flow channel;

[0029] 31. First one-way valve; 32. Second one-way valve;

[0030] 50. Fixing plate; 51. Fixing hole; 52. Connecting ring; 53. Connecting rod. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0032] like Figures 1 to 5As shown, an embodiment of the utility model provides a control valve assembly, which includes a valve body assembly 10, a piston assembly 20 and a fixed assembly. The valve body assembly 10 has a circulation chamber 100, and the circulation chamber 100 has a valve port; the piston assembly 20 is arranged in the circulation chamber 100, and the piston assembly 20 has a sealing end, which is arranged corresponding to the valve port, and the sealing end can move relative to the valve port to block or open the valve port. The fixed assembly is arranged on the periphery of the piston assembly 20, and the piston assembly 20 is arranged in the circulation chamber 100 through the fixed assembly, and there is a channel for fluid circulation between the fixed assembly and the inner wall of the circulation chamber 100. Specifically, the circulation chamber 100 has a first valve port 101 and a second valve port 102 arranged opposite to each other. The piston assembly 20 is arranged in the circulation chamber 100, and the piston assembly 20 has a first sealing end and a second sealing end which are arranged opposite to each other. The first sealing end is arranged corresponding to the first valve port 101, and the first sealing end can move relative to the first valve port 101 to block or open the first valve port 101. The second sealing end is arranged corresponding to the second valve port 102, and the second sealing end can move relative to the second valve port 102 to block or open the second valve port 102.

[0033] By applying the technical solution of the present invention, the piston assembly 20 is fixed in the circulation chamber 100 through the fixing assembly. When the fluid flows through the valve port, the fluid in the circulation chamber 100 can flow through the channel formed between the fixing assembly and the inner wall of the circulation chamber 100. Since the fixing assembly is arranged on the periphery of the piston assembly 20, the fluid can pass through the two ends of the circulation chamber 100 along the periphery of the piston assembly 20. The channel through which the fluid flows does not turn in the circulation direction, and there is no need to avoid the piston assembly 20, which greatly changes the circulation area of ​​the flow channel. In this way, the flow resistance of the piston assembly 20 to the fluid can be reduced, thereby ensuring the circulation efficiency of the fluid when flowing through the circulation chamber 100.

[0034] Specifically in this application, refer to Figure 5 and Figure 6 As shown, the fixing assembly has a fixing hole 51, the piston assembly 20 is inserted into the fixing hole 51, and the outer periphery of the fixing hole 51 has a channel for fluid circulation. Through the above arrangement, the piston assembly 20 can be fixed in the circulation chamber 100 through the fixing hole 51, and the fluid channel is formed between the outer side wall of the piston assembly 20 and the inner side wall of the valve body assembly, so that there is no need to bend the flow channel to avoid the piston assembly 20, thereby ensuring the circulation efficiency of the fluid.

[0035] Furthermore, the fixing hole 51 is coaxially arranged with the first valve port 101 and the second valve port 102. Through the above arrangement, the coaxiality of the piston assembly 20 and the valve body assembly 10 can be ensured, and the stability of the cooperation between the first sealing end and the first valve port 101 and the second sealing end and the second valve port 102 can be ensured.

[0036] In a feasible embodiment of the present application, the fixing assembly can be a fixing sleeve having a fixing hole 51 , and a plurality of flow holes are arranged on the periphery of the fixing hole 51 to connect the first valve port 101 and the second valve port 102 , so as to ensure the stability of the installation of the piston assembly 20 .

[0037] In another feasible embodiment of the present application, the fixing assembly includes a plurality of fixing plates 50, and the plurality of fixing plates 50 are spaced apart along the axial direction of the flow chamber 100, and each fixing plate 50 is provided with a fixing hole 51. Through the above arrangement, the plurality of fixing plates 50 can support the piston assembly 20, and can also reduce the overall weight of the control valve assembly and reduce the manufacturing cost of the solenoid valve.

[0038] Specifically, the fixing plate 50 includes a connecting ring 52 and a connecting rod 53. The connecting ring 52 is provided with a fixing hole 51. A plurality of connecting rods 53 are provided, and the plurality of connecting rods 53 are arranged on the side wall of the connecting ring 52 in an annular manner. The connecting ring 52 is fixedly connected to the inner wall of the valve body assembly 10 through the connecting rods 53. Through the above arrangement, the interval between two adjacent connecting rods 53 can form a channel for the fluid to flow through. In this way, the flow capacity of the fluid can be guaranteed as much as possible while ensuring the strength of the connection between the fixing plate 50 and the valve body assembly 10.

[0039] Furthermore, along the flow direction of the fluid, the projections of the plurality of fixing plates 50 overlap. Through the above arrangement, the flow resistance of the plurality of fixing plates 50 to the fluid can be reduced as much as possible, thereby improving the flow efficiency of the fluid.

[0040] In the present application, the number of connecting rods 53 set on each fixed plate 50 is less than or equal to 4. When the number of connecting rods 53 is greater than 4, the workload of the connecting ring 52 and the connecting rods 53 during connection will increase, and a large number of connecting rods 53 will also reduce the flow area of ​​the fluid. By setting the number of connecting rods 53 set on each fixed plate 50 to be less than or equal to 4, it is possible to facilitate the processing of the fixed plate 50, reduce the time consumption of the connection process of the fixed plate 50 and the valve body assembly 10, improve production efficiency, and ensure the flow capacity of the fluid. The number of connecting rods 53 can be specifically set to 2, 3 or 4.

[0041] Specifically, a plurality of fixing plates 50 are symmetrically arranged along the perpendicular midline of the axial direction of the valve body assembly 10. Through the above arrangement, the supporting performance of the fixing assembly on the piston assembly 20 can be ensured, the probability of the piston assembly 20 being impacted by the fluid and deflected on the axis can be reduced, and the stability of the piston assembly 20 installed in the valve body assembly 10 can be ensured.

[0042] Specifically, the connection between the connecting rod 53 and the valve body assembly 10 can be welding to ensure the connection strength between the fixing assembly and the valve body assembly 10 .

[0043] Specifically, the connection between the connecting ring 52 and the piston assembly 20 can be an interference fit or a welding fit, as long as the connection strength between the piston assembly 20 and the fixed assembly can be guaranteed.

[0044] In the present application, a limiting structure may be provided between the piston assembly 20 and the fixing plate 50 to limit the axial displacement of the piston assembly 20 in the circulation chamber 100. A rotation-stopping structure may also be provided between the piston assembly 20 and the fixing plate 50 to limit the rotation of the piston assembly 20 relative to the valve body assembly 10.

[0045] In another embodiment of the present application, the fixed assembly includes a plurality of connection blocks, which are distributed at annular intervals on the outer periphery of the piston assembly 20, and the connection blocks are fixedly connected to the piston assembly 20, and each connection block is provided with a connection protrusion, which is fixedly connected to the inner wall of the valve body assembly 10. Through the above arrangement, a plurality of connection blocks can be provided in the same cross section of the piston assembly 20 along the axial direction, and the end surfaces of the plurality of connection blocks away from the connection protrusion cooperate to form a fixing hole 51, and the interval between two adjacent connection protrusions forms a channel for fluid to flow through, and the plurality of connection blocks can form a connection block group, and the plurality of connection block groups are arranged at intervals along the axial direction on the outer wall of the piston assembly 20 to support the piston assembly 20. Through the above arrangement, the connection between the fixed assembly and the valve body assembly 10 can be facilitated, and the overall weight of the solenoid valve can be further reduced.

[0046] According to another embodiment of the present application, the solenoid valve includes the above-mentioned control valve assembly. Specifically, the first valve port 101 is used to connect with the first connecting pipe 1, and the second valve port 102 is used to connect with the second connecting pipe 2. The piston assembly 20 is movably arranged in the circulation chamber 100, and the piston assembly 20 has a piston chamber 200. The piston assembly 20 has a relatively set conducting state and a blocking state. When the piston assembly 20 is in the blocking state, it can block the first valve port 101 and / or the second valve port 102. When the piston assembly 20 is in the conducting state, it can make the first connecting pipe 1 communicate with the second connecting pipe 2 through the circulation chamber 100. The solenoid valve further comprises a pilot valve assembly 30, which is arranged on the valve body assembly 10, and has a pilot valve chamber 300, which is connected to the piston chamber 200. The pilot valve assembly 30 also comprises a first flow channel 301 and a second flow channel 302, wherein one end of the first flow channel 301 is used to be connected to the first connecting pipe 1, and the other end of the first flow channel 301 is connected to the pilot valve chamber 300, and one end of the second flow channel 302 is used to be connected to the second connecting pipe 2, and the other end of the second flow channel 302 is connected to the pilot valve chamber 300. The pilot valve assembly 30 has an open state and a closed state which are relatively arranged. When the pilot valve assembly 30 is in the open state, one of the first flow channel 301 and the second flow channel 302 is connected to the pilot valve chamber 300, and the piston assembly 20 is in the conducting state; when the pilot valve assembly 30 is in the closed state, the pilot valve chamber 300 is not connected to the first flow channel 301 and the second flow channel 302, and the piston assembly 20 is in the blocking state. Through the above-mentioned arrangement, the fluid can circulate through the flow channel on the periphery of the fixed component to ensure the flow capacity of the fluid in the circulation chamber 100 when the piston assembly 20 is in the open state; and the piston assembly 20 can block the corresponding first valve port 101 or the second valve port 102 along the flow direction of the fluid during the process of switching to the blocking state. At this time, the movement direction of the piston assembly 20 is the same as the flow direction of the fluid to ensure the sealing reliability of the piston assembly 20. When the piston assembly 20 blocks the first valve port 101 and the second valve port 102 at the same time, two cut-off structures can be formed on the flow path of the fluid, thereby further ensuring the blocking effect of the solenoid valve when closing the valve, and ensuring the sealing performance of the solenoid valve.

[0047] Further, refer to Figure 1As shown, the piston assembly 20 includes a first piston 21, a second piston 22, a piston sleeve 23 and an elastic member 24. The piston sleeve 23 is inserted into the fixing hole 51, and both the first piston 21 and the second piston 22 are movably arranged in the piston sleeve 23. The end of the first piston 21 away from the second piston 22 forms a first sealing end, and the first end of the second piston 22 away from the first piston 21 forms a second sealing end. The inner wall of the first piston 21, the second piston 22 and the piston sleeve 23 cooperate to form a piston cavity 200. The elastic member 24 is arranged between the first piston 21 and the second piston 22, and the elastic member 24 can provide the first piston 21 and the second piston 22 with an elastic force to move away from each other. By setting the elastic member 24 as above, the blocking effect of the piston assembly 20 when it is in a blocking state can be ensured, the leakage of the fluid at the first valve port 101 and the second valve port 102 can be reduced, and the use effect of the solenoid valve can be ensured.

[0048] Specifically in the present application, the pilot valve assembly 30 further includes a first one-way valve 31 and a second one-way valve 32. The first one-way valve 31 is arranged on the first flow channel 301, and the first one-way valve 31 is unidirectionally connected from the pilot valve chamber 300 to the direction of the first connecting pipe 1, and the second one-way valve 32 is arranged on the second flow channel 302, and the second one-way valve 32 is unidirectionally connected from the pilot valve chamber 300 to the direction of the second connecting pipe 2. When the pilot valve assembly 30 is switched to the open state, the first one-way valve 31 connects the pilot valve chamber 300 with the first flow channel 301, and the pilot valve chamber 300 is not connected with the second flow channel 302; or, the second one-way valve 32 connects the pilot valve chamber 300 with the second flow channel 302, and the pilot valve chamber 300 is not connected with the first flow channel 301. Through the above arrangement, when the fluid flows from the first connecting pipe 1 to the second connecting pipe 2, after the pilot valve assembly 30 switches to the open state, the first one-way valve 31 is closed, the first flow channel 301 is not connected to the pilot valve chamber 300, the second one-way valve 32 is opened, and the second flow channel 302 can be connected to the pilot valve chamber 300; when the fluid flows from the second connecting pipe 2 to the first connecting pipe 1, after the pilot valve assembly 30 switches to the open state, the second one-way valve 32 is closed, the second flow channel 302 is not connected to the pilot valve chamber 300, the first one-way valve 31 is opened, and the first flow channel 301 can be connected to the pilot valve chamber 300.

[0049] In a feasible embodiment of the present application, when the solenoid valve switches from a closed state to an open state, the switching action of the piston assembly 20 is as follows:

[0050] Reference Figure 1 and Figure 2As shown, when the fluid flows from the first connecting pipe 1 to the second connecting pipe 2, the pressure in the first connecting pipe 1 is greater than the pressure in the second connecting pipe 2, the pilot valve assembly 30 is switched to the open state, the first check valve 31 on the first flow channel 301 is closed, the first flow channel 301 is not connected to the pilot valve chamber 300, the second check valve 32 on the second flow channel 302 is opened, the pilot valve chamber 300 is connected to the second flow channel 302, the piston chamber 200 can be connected to the second flow channel 302, the pressure in the piston chamber 200 is reduced, at this time the pressure in the first connecting pipe 1 is greater than the pressure in the piston chamber 200, the first piston 21 is The pressure to the first connecting pipe 1 is greater than the pressure in the piston chamber 200 and the elastic member 24, the first piston 21 moves away from the first valve port 101, the first valve port 101 opens, the fluid enters the circulation chamber 100, the side wall at the end of the second piston 22 is subjected to a pressure of the fluid greater than the pressure in the piston chamber 200 and the pressure of the elastic member 24, the second piston 22 can move away from the second valve port 102 driven by the pressure difference, the second valve port 102 opens, the piston assembly 20 switches to the conducting state, and the fluid can flow from the first connecting pipe 1 to the second connecting pipe 2 through the circulation chamber 100.

[0051] Reference Figure 3 and Figure 4 As shown, when the fluid flows from the second connecting pipe 2 to the first connecting pipe 1, the pressure in the second connecting pipe 2 is greater than the pressure in the first connecting pipe 1, the pilot valve assembly 30 is switched to the open state, the second one-way valve 32 on the second flow channel 302 is closed, the first flow channel 301 is not connected to the pilot valve cavity 300, the first one-way valve 31 on the first flow channel 301 is opened, the pilot valve cavity 300 is connected to the first flow channel 301, the piston cavity 200 can be connected to the first flow channel 301, the pressure in the piston cavity 200 is reduced, and at this time the pressure in the second connecting pipe 2 is greater than the pressure in the piston cavity 200, and the second piston 22 is The pressure to the second connecting pipe 2 is greater than the pressure in the piston chamber 200 and the elastic member 24, the second piston 22 moves away from the second valve port 102, the second valve port 102 opens, the fluid enters the circulation chamber 100, the side wall at the end of the first piston 21 is subjected to a pressure of the fluid greater than the pressure in the piston chamber 200 and the pressure of the elastic member 24, the first piston 21 can move away from the first valve port 101 driven by the pressure difference, the first valve port 101 opens, the piston assembly 20 switches to the conducting state, and the fluid can flow from the second connecting pipe 2 to the first connecting pipe 1 through the circulation chamber 100.

[0052] Specifically, a balance channel is provided between the piston chamber 200 and the circulation chamber 100 to connect the piston chamber 200 and the circulation chamber 100. Through the above arrangement, the fluid in the circulation chamber 100 can enter the piston chamber 200 through the balance channel, and pass through the piston chamber 200 and the pilot valve chamber 300 to flow to the first flow channel 301 or the second flow channel 302.

[0053] In a feasible embodiment of the present application, when the solenoid valve switches from the open state to the closed state, the switching action of the piston assembly 20 is as follows:

[0054] Reference Figures 1 to 4 As shown, the pilot valve assembly 30 is switched to a closed state, the first flow channel 301 and the second flow channel 302 are not connected to the pilot valve chamber 300, the fluid in the circulation chamber 100 flows into the piston chamber 200 through the balance channel, the pressure in the piston chamber 200 increases, the pressure of the piston chamber 200 on the first piston 21 and the second piston 22 cooperates with the pressure of the elastic member 24 on the first piston 21 and the second piston 22, so that the first piston 21 moves toward the first valve port 101, and the second piston 22 moves toward the second valve port 102, the piston assembly 20 is switched to a blocked state, the first piston 21 blocks the first valve port 101, the second piston 22 blocks the second valve port 102, and the first connecting pipe 1 and the second connecting pipe 2 are not connected to the circulation chamber 100.

[0055] Specifically, the minimum flow area of ​​the balancing channel is respectively smaller than the minimum flow area of ​​the first one-way valve 31 and the second one-way valve 32. Through the above arrangement, the flow capacity of the balancing channel at the minimum flow area is smaller than the flow capacity when the first one-way valve 31 and the second one-way valve 32 are opened. When the piston assembly 20 is in the conducting state, the pressure of the piston chamber 200 is reduced, and the pressure in the piston chamber 200 is smaller than the pressure in the flow chamber 100. The first piston 21 and the second piston 22 will not move under the push of the elastic force of the elastic member 24, so as to ensure the stable operation of the solenoid valve.

[0056] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0057] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0058] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0059] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0060] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0061] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A control valve assembly, characterized in that: The control valve assembly comprises: A valve body assembly (10) having a flow chamber (100), wherein the flow chamber (100) has a valve port; A piston assembly (20) is arranged in the circulation chamber (100), the piston assembly (20) having a sealing end, the sealing end being arranged corresponding to the valve port, and the sealing end being movable relative to the valve port to block or open the valve port; A fixing component is arranged on the outer periphery of the piston component (20); the piston component (20) is arranged in the circulation chamber (100) through the fixing component; and a channel for fluid circulation is provided between the fixing component and the inner wall of the circulation chamber (100).

2. The control valve assembly according to claim 1, characterized in that The fixing assembly has a fixing hole (51), the piston assembly (20) is inserted into the fixing hole (51), and the outer periphery of the fixing hole (51) has the channel for fluid circulation.

3. The control valve assembly according to claim 2, characterized in that The fixing hole (51) is coaxially arranged with the valve port.

4. The control valve assembly according to claim 2, characterized in that: The fixing assembly comprises a plurality of fixing plates (50), the plurality of fixing plates (50) being distributed at intervals along the axial direction of the flow chamber (100), and each of the fixing plates (50) being provided with the fixing hole (51).

5. The control valve assembly according to claim 4, characterized in that The fixing plate (50) comprises: A connecting ring (52), wherein the fixing hole (51) is provided on the connecting ring (52); A connecting rod (53), wherein a plurality of the connecting rods (53) are provided, and the plurality of connecting rods (53) are arranged on the side wall of the connecting ring (52) in an annular manner, and the connecting ring (52) is fixedly connected to the inner wall of the valve body assembly (10) through the connecting rods (53).

6. The control valve assembly according to claim 5, characterized in that Along the flow direction of the fluid, the projections of the plurality of fixing plates (50) overlap.

7. The control valve assembly according to claim 5, characterized in that The number of connecting rods (53) provided on each of the fixing plates (50) is less than or equal to 4.

8. The control valve assembly according to claim 5, characterized in that Along the axial midline of the valve body assembly (10), a plurality of fixing plates (50) are symmetrically arranged.

9. The control valve assembly according to claim 1, characterized in that The fixed assembly comprises a plurality of connection blocks, which are distributed at annular intervals on the outer circumference of the piston assembly (20), and the connection blocks are fixedly connected to the piston assembly (20). Each of the connection blocks is provided with a connection protrusion, and the connection protrusion is fixedly connected to the inner wall of the valve body assembly (10).

10. A solenoid valve, characterized in that: The solenoid valve comprises the control valve assembly according to any one of claims 1 to 9.

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