Control valve assembly and electromagnetic valve with same

Abstract

The utility model provides a control valve assembly and a solenoid valve with the same, the control valve assembly comprises a pilot valve assembly, the pilot valve assembly is provided with a pilot valve cavity and a connecting channel, the connecting channel is provided with a pilot valve port, and the connecting channel is communicated with the pilot valve cavity through the pilot valve port; the one-way valve comprises a one-way valve seat and a one-way valve element, the one-way valve seat is arranged on the pilot valve assembly and provided with a guide inner hole and a one-way valve port, the one-way valve port is communicated with the connecting channel, the guide inner hole and the one-way valve port are coaxially arranged, and the one-way valve element is movably arranged in the guide inner hole so as to block or open the one-way valve port. A circulation structure is arranged on the side wall of the one-way valve seat, and when the one-way valve port is opened, the circulation structure is communicated with the guide valve port through the one-way valve port. According to the technical scheme, the problem that in the prior art, an electromagnetic valve in a control valve assembly is high in machining difficulty can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to solenoid valve technical field, specifically, control valve assembly and solenoid valve with it are provided. BACKGROUND

[0002] At present, in solenoid valve, control valve assembly such as pilot valve assembly is usually used to control the piston blockage or opening of valve port of solenoid valve to realize the cut-off and flow-through effect of solenoid valve.

[0003] In the prior art, the pilot valve assembly is generally provided with a check valve, and the flow direction of fluid is controlled by the check valve to control the pressure at the piston and realize the control of the action of the piston. The pilot valve assembly is provided with a connecting channel, and the connecting channel is communicated with the check valve. Currently, the port connected between the connecting channel and the check valve is usually used as a check valve port to reduce the machining difficulty of the check valve. However, since the check valve port and the check valve assembly are not in the same part, the coaxiality deviation is large, the sealing effect is poor, and the size precision of the part is high, so the machining difficulty is high. SUMMARY

[0004] The utility model provides a control valve assembly and solenoid valve with it to solve the problem of high machining difficulty of solenoid valve in the control valve assembly in the prior art.

[0005] According to one aspect of the utility model, a control valve assembly is provided, which comprises: a pilot valve assembly, the pilot valve assembly having a pilot valve cavity and a connecting channel, the connecting channel having a pilot valve port, and the connecting channel being communicated with the pilot valve cavity through the pilot valve port; a check valve comprising a check valve seat and a check valve core, the check valve seat being arranged on the pilot valve assembly, the check valve seat having a guide inner hole and a check valve port, the check valve port being communicated with the connecting channel, and the guide inner hole being coaxially arranged with the check valve port, the check valve core being movably arranged in the guide inner hole to block or open the check valve port, and a flow-through structure being arranged on the side wall of the check valve seat, and the flow-through structure being communicated with the pilot valve port through the check valve port when the check valve port is opened.

[0006] By applying the technical scheme of the present application, the control valve assembly comprises the pilot valve assembly and the check valve, and the check valve core can move in the guide inner hole in the check valve seat to block or open the check valve port of the check valve seat, thereby realizing the on-off control of the check valve. In the present application, the check valve port is arranged on the check valve seat, the check valve port can use the same positioning reference as the guide inner hole, the coaxiality of the check valve port and the guide inner hole is ensured as much as possible, the coaxiality of the check valve port and the guide inner hole is improved, the check valve core can stably cooperate with the check valve port during movement, the check valve core is prevented from deviating, the sealing effect of the check valve is ensured, the cooperation precision requirement between the check valve and the connecting channel is reduced, and the machining difficulty of the pilot valve assembly and the check valve is reduced.

[0007] Further, the flow structure comprises a plurality of flow holes, which are annularly and spacedly arranged on the side wall of the one-way valve seat.

[0008] Further, the pilot valve assembly is provided with a plug hole, the plug hole has a connecting section and a plug section in communication with each other, the inner diameter of the plug section is smaller than that of the connecting section, an abutting surface is formed between the plug section and the connecting section, the one-way valve seat is plugged into the plug section, and a clearance channel for fluid flow is formed between the outer wall of the one-way valve seat and the inner wall of the connecting section, and the flow structure is in communication with the clearance channel.

[0009] Further, the one-way valve seat is annularly provided with a connecting boss on the outer side wall near one side of the one-way valve port, the connecting boss is plugged into the plug section, the end face of the connecting boss away from the one-way valve port is coplanar with the abutting surface, and the end face of the connecting boss away from the one-way valve port is connected to the abutting surface by laser welding.

[0010] Further, the connecting channel has a first communication hole and a second communication hole in communication with each other, one end of the first communication hole is in communication with the side wall of the second communication hole, the other end of the first communication hole forms a pilot valve port, both ends of the second communication hole have plug holes, two one-way valves are provided, the two one-way valves are respectively plugged into the two plug holes, and the one-way valve ports of the two one-way valves are oppositely arranged.

[0011] Further, the one-way valve seat is further provided with an opening, the opening is oppositely arranged with the one-way valve port on both sides of the guide inner hole, the diameter of the one-way valve core is matched with the diameter of the guide inner hole, and the diameters of the opening and the one-way valve port are both smaller than the diameter of the one-way valve core.

[0012] Further, the one-way valve port has a variable diameter section, the inner diameter of the variable diameter section gradually increases in a direction away from the one-way valve port, and the one-way valve core abuts against the inner wall of the variable diameter section when the one-way valve core blocks the one-way valve port.

[0013] Further, the one-way valve seat has a limiting section on the side away from the one-way valve port, the inner diameter of the limiting section gradually decreases in a direction from the one-way valve port to the opening, the port of the limiting section away from the one-way valve port forms the opening, and the limiting section is used to limit the movement of the one-way valve core in a direction away from the one-way valve port.

[0014] Further, the limiting section is formed by a riveting process.

[0015] According to another aspect of the utility model, an electromagnetic valve is provided, the electromagnetic valve comprises the control valve assembly. By applying the control valve assembly in the electromagnetic valve, the machining difficulty of the control valve assembly can be reduced, the yield of the control valve assembly can be improved, the machining cost of the electromagnetic valve as a whole can be reduced, and the use effect of the control valve assembly in the use process of the electromagnetic valve is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings accompanying the specification provide further understanding of the present application, the illustrative embodiments thereof, and constitute a part of the specification. The illustrative embodiments of the present application and their description serve to explain the application. They do not, however, limit the present application. In the drawings:

[0017] Figure 1 A structural schematic of a pilot valve assembly provided by the present application is shown;

[0018] Figure 2 A structural schematic of a check valve provided by the present application is shown;

[0019] Figure 3 An isometric view of the check valve provided by the present application is shown;

[0020] Figure 4 A structural schematic of a pilot valve seat provided by the present application is shown;

[0021] Figure 5 A structural schematic of the electromagnetic valve in a closed valve state provided by the present application is shown;

[0022] Figure 6 A structural schematic of the electromagnetic valve in an open valve state provided by the present application is shown.

[0023] Among them, the above drawings include the following reference signs:

[0024] 01, first connecting pipe; 02, second connecting pipe; 03, first capillary; 04, second capillary;

[0025] 10, pilot valve assembly; 11, pilot valve cavity; 12, connecting passage; 121, first communication hole; 122, second communication hole; 13, pilot valve port; 14, plug-in hole; 141, connecting section; 142, plug-in section; 143, abutting surface; 15, pilot valve seat;

[0026] 20, check valve; 21, check valve seat; 211, opening; 212, guide inner hole; 213, check valve port; 214, variable diameter section; 215, limiting section; 22, check valve core; 23, flow-through hole; 24, connecting boss; 201, first check valve; 202, second check valve;

[0027] 30, valve body assembly; 301, flow-through cavity; 31, first valve port; 32, second valve port;

[0028] 40, piston assembly; 401, piston cavity; 402, balance hole; 41, first piston; 42, second piston; 43, piston sleeve. DETAILED DESCRIPTION

[0029] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is merely illustrative, and by no means constitutes any limitation to the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] As shown in Figure 1 The present application provides a control valve assembly, which comprises a pilot valve assembly 10 and a one-way valve 20. The pilot valve assembly 10 has a pilot valve cavity 11 and a connecting channel 12, the connecting channel 12 has a pilot valve port 13, and the connecting channel 12 communicates with the pilot valve cavity 11 through the pilot valve port 13. The one-way valve 20 comprises a one-way valve seat 21 and a one-way valve core 22. The one-way valve seat 21 is arranged on the pilot valve assembly 10, and the one-way valve seat 21 has a guide inner hole 212 and a one-way valve port 213. The one-way valve port 213 communicates with the connecting channel 12, and the guide inner hole 212 is coaxially arranged with the one-way valve port 213. The one-way valve core 22 is movably arranged in the guide inner hole 212 to block or open the one-way valve port 213. A flow structure is arranged on the side wall of the one-way valve seat 21. When the one-way valve port 213 is opened, the flow structure communicates with the pilot valve port 13 through the one-way valve port 213.

[0031] The control valve assembly comprises the pilot valve assembly 10 and the one-way valve 20. The one-way valve core 22 can move in the guide inner hole 212 of the one-way valve seat 21 to block or open the one-way valve port 213 of the one-way valve seat 21, thereby realizing the on-off control of the one-way valve 20. In the present application, the one-way valve port 213 is arranged on the one-way valve seat 21. The one-way valve port 213 can use the same positioning datum as the guide inner hole 212, so as to ensure the coaxiality of the one-way valve port 213 and the guide inner hole 212 as much as possible, improve the coaxiality of the one-way valve port 213 and the guide inner hole 212, and thus the one-way valve core 22 can stably cooperate with the one-way valve port 213 during movement, prevent the one-way valve core 22 from deviating, ensure the sealing effect of the one-way valve 20, reduce the requirement for the cooperation precision between the one-way valve 20 and the connecting channel 12, and reduce the processing difficulty of the pilot valve assembly 10 and the one-way valve 20.

[0032] Specifically, the one-way valve port 213 and the guide inner hole 212 can be formed by one-time processing, so as to further improve the coaxiality of the one-way valve port 213 and the guide inner hole 212.

[0033] In some feasible embodiments of the present application, specific reference is made to Figure 2 and Figure 3As shown, the flow structure includes a plurality of flow holes 23, which are annularly and spacedly arranged on the side wall of the one-way valve seat 21. In this way, the flow holes 23 can realize the flow function of the fluid, and compared with the solution of using a groove type flow structure in the prior art, annularly arranging a plurality of flow holes 23 on the side wall of the one-way valve seat 21 can also ensure the structural stability of the one-way valve seat 21 and reduce the possibility of deformation of the one-way valve seat 21 under stress in subsequent processing.

[0034] As shown in the figure, Figure 4 As shown, the pilot valve assembly 10 includes a pilot valve seat 15, which is provided with a plug-in hole 14 having a connecting section 141 and a plug-in section 142 in communication with each other. The inner diameter of the plug-in section 142 is smaller than that of the connecting section 141, and an abutting surface 143 is formed between the plug-in section 142 and the connecting section 141. The one-way valve seat 21 is plugged into the plug-in section 142, and there is a gap channel between the outer wall of the one-way valve seat 21 and the inner wall of the connecting section 141 for the flow of fluid. The flow structure is in communication with the gap channel. In this way, a larger gap can be formed between the side wall of the one-way valve seat 21 and the inner wall of the plug-in hole 14, and the fluid can enter the pilot inner hole 212 through the gap channel, thereby increasing the flow area of the fluid at the side wall of the one-way valve seat 21 and ensuring the flow efficiency of the fluid. Moreover, the end face of the connecting boss 24 away from the one-way valve port 213 is coplanar with the abutting surface 143, which can also provide a reference for the installation of the one-way valve 20, facilitating the judgment of whether the one-way valve 20 is installed in place.

[0035] Specifically, when the pilot valve assembly 10 is connected to the system pipeline, the one-way valve 20 needs to be connected to the connector. The pilot valve assembly 10 can be connected to the connector using a capillary tube or the like. The end face of the connecting tube at the end face of the pilot valve assembly 10 can abut against the abutting surface 143 to limit the displacement of the connecting tube, thereby facilitating the judgment of whether the connecting tube is installed in place.

[0036] Further, the outer side wall of the one-way valve seat 21 near the one-way valve port 213 is annularly provided with a connecting boss 24, which is inserted into the plug-in section 142. The end face of the connecting boss 24 away from the one-way valve port 213 is coplanar with the abutting surface 143, and the end face of the connecting boss 24 away from the one-way valve port 213 is connected to the abutting surface 143 by laser welding. The coplanar end face of the connecting boss 24 away from the one-way valve port 213 and the abutting surface 143 can provide a flat welding surface for laser welding, facilitating laser welding. The use of laser welding process eliminates the risk of solder flowing into the interior of the one-way valve 20, thereby ensuring the welding quality.

[0037] Specifically, the connecting channel 12 has a first communicating hole 121 and a second communicating hole 122 in communication with each other, one end of the first communicating hole 121 is in communication with the sidewall of the second communicating hole 122, the other end of the first communicating hole 121 forms the pilot valve port 13, both ends of the second communicating hole 122 have the plug-in hole 14, the two one-way valves 20 are arranged in the two plug-in holes 14 respectively, and the one-way valve ports 213 of the two one-way valves 20 are arranged oppositely. In this way, the two one-way valves 20 can meet the connection requirements of the electromagnetic valve, the two one-way valves 20 are in communication with the pilot valve cavity 11 through the connecting channel 12, and the pilot valve assembly 10 can simultaneously control whether the two one-way valves 20 are in communication with the pilot valve cavity 11 through the same pilot valve port 13.

[0038] Further, the one-way valve seat 21 is further provided with an opening 211, the opening 211 is arranged on both sides of the guide inner hole 212 opposite to the one-way valve port 213, the diameter of the one-way valve core 22 is matched with the diameter of the guide inner hole 212, that is, the diameter of the one-way valve core 22 is equal to or slightly smaller than the diameter of the guide inner hole 212, so that the one-way valve core 22 can move in the guide inner hole 212, and there is no large gap between the one-way valve core 22 and the guide inner hole 212, and the fluid can push the one-way valve core 22 to move in the guide inner hole 212. The opening 211 can avoid the one-way valve seat 21 from being gas trapped during the movement of the one-way valve core 22, and prevent the normal movement of the one-way valve core 22, the diameters of the opening 211 and the one-way valve port 213 are smaller than the diameter of the one-way valve core 22, in this way, the opening 211 can limit the movement of the one-way valve core 22 on the basis of realizing the fluid flow, and the opening 211 can stop the one-way valve core 22.

[0039] In some possible embodiments of the present application, the one-way valve port 213 has a variable-diameter section 214, the inner diameter of the variable-diameter section 214 gradually increases in the direction of the guide inner hole 212 along the one-way valve port 213, and the one-way valve core 22 abuts against the inner wall of the variable-diameter section 214 when the one-way valve core 22 blocks the one-way valve port 213. Through the above arrangement, the contact area of the one-way valve port 213 and the one-way valve core 22 can be increased, and thus the sealing performance of the one-way valve 20 can be improved, the internal leakage of the one-way valve 20 can be reduced, and the use effect of the one-way valve 20 can be ensured.

[0040] In some possible embodiments of the present application, the one-way valve seat 21 has a limiting section 215 away from the one-way valve port 213, the inner diameter of the limiting section 215 gradually decreases in the direction of the opening 211 along the one-way valve port 213, and the port of the limiting section 215 away from the one-way valve port 213 forms the opening 211, and the limiting section 215 is used for limiting the movement of the one-way valve core 22 away from the one-way valve port 213. Through the above arrangement, the limiting section 215 can form the opening 211, and the displacement of the one-way valve core 22 can be limited while the fluid flow function is realized, and the one-way valve core 22 can be prevented from being excessively displaced.

[0041] Specifically, the limiting section 215 is formed by riveting. The limiting section 215 can be formed by pressing the side wall of the one-way valve seat 21 towards the central axis, causing the one-way valve seat 21 to deform, and then riveting it together. This simplifies the processing technology, ensures the connection strength between the limiting section 215 and the one-way valve seat 21, and reduces the possibility of the limiting section 215 falling off under the impact of the one-way valve core 22.

[0042] According to another aspect of this application, a solenoid valve is provided, with reference to... Figure 5 and Figure 6 As shown, the solenoid valve includes the control valve assembly described above. By applying the control valve assembly to the solenoid valve, the processing difficulty of the control valve assembly can be reduced, the yield rate of the control valve assembly can be improved, the overall processing cost of the solenoid valve can be reduced, and the performance of the control valve assembly can be guaranteed during the use of the solenoid valve.

[0043] Specifically, the solenoid valve provided in this application also includes a valve body assembly 30 and a piston assembly 40. The valve body assembly 30 has a flow chamber 301, with a first valve port 31 and a second valve port 32 disposed opposite to each other on both sides of the flow chamber 301. The first valve port 31 is connected to a first connecting pipe 01, and the second valve port 32 is connected to a second connecting pipe 02. The piston assembly 40 includes a piston sleeve 43, a first piston 41, and a second piston 42. The first piston 41 is disposed corresponding to the first valve port 31, and the second piston 42 is disposed corresponding to the second valve port 32. The piston sleeve 43, the first piston 41, and the second piston 42 form a piston chamber 401.

[0044] The pilot valve assembly 10 provided in this application is disposed on the valve body assembly 30. The pilot valve chamber 11 is connected to the piston chamber 401. The one-way valve 20 includes a first one-way valve 201 and a second one-way valve 202. A first capillary tube 03 is disposed between the first one-way valve 201 and the first connecting pipe 01 to connect the first connecting pipe 01 and the first one-way valve 201. A second capillary tube 04 is disposed between the second one-way valve 202 and the second connecting pipe 02 to connect the second connecting pipe 02 and the second one-way valve 202. The pilot valve assembly 10 has an open state and a closed state that are disposed opposite to each other. When the pilot valve assembly 10 is in the open state, the pilot valve assembly opens the pilot valve port 13, and the pilot valve chamber 11 can be connected to one of the first connecting pipe 01 or the second connecting pipe 02. When the pilot valve assembly 10 is in the closed state, the pilot valve assembly 10 blocks the pilot valve port 13, and neither the first connecting pipe 01 nor the second connecting pipe 02 is connected to the pilot valve chamber 11.

[0045] Specifically, the first piston 41 has a first valve opening end face at one end thereof facing the first valve port 31, and a gap is formed between the first valve opening end face and the inner wall of the flow passage cavity 301 when the first piston 41 blocks the first valve port 31; the second piston 42 has a second valve opening end face at one end thereof facing the second valve port 32, and a gap is formed between the second valve opening end face and the inner wall of the flow passage cavity 301 when the second piston 42 blocks the second valve port 32. With the above arrangement, when the first piston 41 opens the first valve port 31 and the second piston 42 blocks the second valve port 32, the fluid entering the flow passage cavity 301 through the first valve port 31 can enter the gap between the second valve opening end face and the inner wall of the flow passage cavity 301 to provide a driving force to the second piston 42 to move away from the second valve port 32, so as to realize the opening of the electromagnetic valve; when the second piston 42 opens the second valve port 32 and the first piston 41 blocks the first valve port 31, the fluid entering the flow passage cavity 301 through the second valve port 32 can enter the gap between the first valve opening end face and the inner wall of the flow passage cavity 301 to provide a driving force to the first piston 41 to move away from the first valve port 31, so as to realize the opening of the electromagnetic valve.

[0046] Further, the first piston 41 and the second piston 42 are both provided with a balance hole 402, which can communicate with the flow passage cavity 301, and the fluid in the flow passage cavity 301 can enter the piston cavity 401; when the electromagnetic valve is closed, the high-pressure fluid in the flow passage cavity 301 can enter the flow passage cavity 301 to drive the first piston 41 and the second piston 42 to move, so as to block the first valve port 31 and the second valve port 32. Further, the first piston 41 and the second piston 42 can be further provided with an elastic member, which provides an elastic force to the first piston 41 and the second piston 42 to move away from each other, so as to improve the movement performance of the first piston 41 and the second piston 42.

[0047] Since the size of the one-way valve core 22 in the present application is matched with the size of the guide inner hole 212, when the fluid enters the opening 211 through the capillary tube, the fluid can drive the one-way valve core 22 to move in the guide inner hole 212, and the fluid can enter another one-way valve 20 through the second communication hole 122 to drive another one-way valve 20 to move. In this way, when the first one-way valve 201 is driven by the fluid to switch to the one-way blocking state, the second one-way valve 202 can be driven by the fluid to switch to the one-way opening state, and when the second one-way valve 202 is driven by the fluid to switch to the one-way blocking state, the first one-way valve 201 can be driven by the fluid to switch to the one-way opening state, so as to realize the communication and disconnection of the first connection pipe 01 and the second connection pipe 02 in the opening state and the closed state of the pilot valve assembly 10.

[0048] Referring to Figure 5 As shown in Figure 6 , the switching action of the electromagnetic valve in the process of switching from the closed state to the open state is as follows:

[0049] When fluid flows from the first connector 01 to the second connector 02, the pressure in the first connector 01 is greater than the pressure in the second connector 02. At this time, the pilot valve assembly 10 can switch to the open state, the first check valve 201 closes, the first connector 01 is not connected to the pilot valve chamber 11, and the second check valve 202 opens, allowing the second connector 02 to connect to the pilot valve chamber 11. Thus, the piston chamber 401 can connect to the second connector 02, and the pressure in the piston chamber 401 decreases. At this time, the pressure in the first connector 01 is greater than the pressure in the piston chamber 401, and the first piston 41 experiences a greater pressure from the first connector 01 than from the piston chamber 401. The elastic force of the elastic element causes the first piston 41 to move away from the first valve port 31, opening the first valve port 31. Fluid enters the flow chamber 301 and then into the gap between the second valve end face and the flow chamber 301, providing pressure to the second piston 42 in the direction away from the second valve port 32. The pressure of the fluid at the end of the second piston 42 is greater than the pressure in the piston chamber 401 and the pressure of the elastic element. Driven by the pressure difference, the second piston 42 can move away from the second valve port 32, opening the second valve port 32. The piston assembly 40 switches to the conducting state, allowing fluid to flow from the first pipe 01 to the second pipe 02 through the flow chamber 301.

[0050] When fluid flows from the second connector 02 to the first connector 01, the pressure in the second connector 02 is greater than the pressure in the first connector 01. At this time, the pilot valve assembly 10 can switch to the open state, the second check valve 202 closes, the second connector 02 is not connected to the pilot valve chamber 11, the first check valve 201 opens, and the first connector 01 can connect to the pilot valve chamber 11 through the first check valve 201. Thus, the piston chamber 401 can connect to the first connector 01, and the pressure in the piston chamber 401 decreases. At this time, the pressure in the second connector 02 is greater than the pressure in the piston chamber 401, and the second piston 42 experiences a greater pressure from the second connector 02 than the piston 42. The elastic force of the cavity 401 and the elastic element causes the second piston 42 to move away from the second valve port 32, opening the second valve port 32. Fluid enters the flow cavity 301 and enters the gap between the first valve end face and the flow cavity 301, providing pressure to the first piston 41 in the direction away from the first valve port 31. The pressure of the fluid at the end of the first piston 41 is greater than the pressure in the piston cavity 401 and the pressure of the elastic element. Driven by the pressure difference, the first piston 41 can move away from the first valve port 31. The piston assembly 40 switches to the conducting state, and the fluid can flow from the second pipe 02 to the first pipe 01 through the flow cavity 301.

[0051] Reference Figure 5 and Figure 6 As shown, the switching action of the solenoid valve during the process of switching from the open state to the closed state is as follows:

[0052] The pilot valve assembly 10 switches to the closed state, neither the first connector pipe 01 nor the second connector pipe 02 communicates with the pilot valve cavity 11, the fluid in the flow cavity 301 flows into the piston cavity 401 through the balance hole 402, the pressure in the piston cavity 401 increases, the pressure matching elastic member of the piston cavity 401 exerts pressure on the first piston 41 and the second piston 42, the first piston 41 moves to the first valve port 31, the second piston 42 moves to the second valve port 32, the piston assembly 40 blocks the first valve port 31 through the first piston 41, and the second piston 42 blocks the second valve port 32, neither the first connector pipe 01 nor the second connector pipe 02 communicates with the flow cavity 301.

[0053] It is to be noted that the terms used herein are merely for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise, and it should be further understood that the terms "comprise" and / or "include" when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof.

[0054] The relative arrangement of components and steps, numerical expressions, and values set forth in these embodiments do not limit the scope of the present application unless otherwise specifically stated. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in proportion to the actual proportions. The techniques, methods and devices known to those skilled in the relevant art can not be discussed in detail, but under appropriate circumstances, the techniques, methods and devices should be considered as part of the specification. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so further discussion is not needed if an item is defined in one drawing.

[0055] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and in the absence of contrary statements, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0056] For purposes of the description hereinafter, spatial relative terms, such as "above", "below", "upper", "lower", and the like, can be used to describe the relative position of one element or feature to another as illustrated in the figures. It will be understood that the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. Well, the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0057] In addition, it needs to be explained that the use of "first", "second" and the like words to limit the parts, only for the convenience of the corresponding parts for the distinction, such as no other declaration, the above words have no special meaning, therefore can not be understood as the restriction of the scope of protection of the utility model.

[0058] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A control valve assembly characterized by, The control valve assembly comprises: a pilot valve assembly (10) having a pilot valve cavity (11) and a connecting channel (12) having a pilot valve port (13), the connecting channel (12) communicating with the pilot valve cavity (11) through the pilot valve port (13); a one-way valve (20) including a one-way valve seat (21) and a one-way valve core (22), the one-way valve seat (21) being arranged on the pilot valve assembly (10), the one-way valve seat (21) having a guide inner hole (212) and a one-way valve port (213), the one-way valve port (213) communicating with the connecting channel (12), the guide inner hole (212) being coaxially arranged with the one-way valve port (213), the one-way valve core (22) being movably arranged in the guide inner hole (212) to block or open the one-way valve port (213), a flow passage structure being arranged on the side wall of the one-way valve seat (21), the flow passage structure communicating with the pilot valve port (13) through the one-way valve port (213) when the one-way valve port (213) is open.

2. The control valve assembly of claim 1, wherein, The flow passage structure includes a plurality of flow passage holes (23) annularly and spacedly arranged on the side wall of the one-way valve seat (21).

3. The control valve assembly of claim 1, wherein, The pilot valve assembly (10) is provided with a plug hole (14) having a connecting section (141) and a plug section (142) in communication with each other, the inner diameter of the plug section (142) being smaller than that of the connecting section (141), an abutting surface (143) being formed between the plug section (142) and the connecting section (141), the one-way valve seat (21) being plugged into the plug section (142), and a clearance passage for fluid flow being formed between the outer wall of the one-way valve seat (21) and the inner wall of the connecting section (141), the flow passage structure being in communication with the clearance passage.

4. The control valve assembly of claim 3, wherein, An annular connecting boss (24) is arranged on the outer side wall of the one-way valve seat (21) near the one-way valve port (213), the connecting boss (24) being plugged into the plug section (142), the end face of the connecting boss (24) away from the one-way valve port (213) being coplanar with the abutting surface (143), and the end face of the connecting boss (24) away from the one-way valve port (213) being connected to the abutting surface (143) by laser welding.

5. The control valve assembly of claim 3, wherein, The connecting channel (12) has a first communication hole (121) and a second communication hole (122) in communication with each other, one end of the first communication hole (121) communicating with the side wall of the second communication hole (122), the other end of the first communication hole (121) forming the pilot valve port (13), both ends of the second communication hole (122) having the plug hole (14), the one-way valve (20) being provided with two, the two one-way valves (20) being respectively plugged into the two plug holes (14), and the one-way valve ports (213) of the two one-way valves (20) being oppositely arranged.

6. The control valve assembly of claim 1, wherein, The one-way valve seat (21) is further provided with an opening (211) opposite to the one-way valve port (213) on both sides of the guide inner hole (212), the diameter of the one-way valve core (22) is matched with the diameter of the guide inner hole (212), and the diameters of the opening (211) and the one-way valve port (213) are both smaller than the diameter of the one-way valve core (22).

7. The control valve assembly of claim 1, wherein, The one-way valve port (213) has a variable diameter section (214), the inner diameter of the variable diameter section (214) gradually increases in the direction of the guide inner hole (212) along the one-way valve port (213), and the one-way valve core (22) abuts against the inner wall of the variable diameter section (214) when the one-way valve core (22) blocks the one-way valve port (213).

8. The control valve assembly of claim 6, wherein, The one-way valve seat (21) is further provided with an opening (211) opposite to the one-way valve port (213) on both sides of the guide inner hole (212), the diameter of the one-way valve core (22) is matched with the diameter of the guide inner hole (212), and the diameters of the opening (211) and the one-way valve port (213) are both smaller than the diameter of the one-way valve core (22).

9. The control valve assembly of claim 8, wherein, The one-way valve seat (21) is further provided with an opening (211) opposite to the one-way valve port (213) on both sides of the guide inner hole (212), the diameter of the one-way valve core (22) is matched with the diameter of the guide inner hole (212), and the diameters of the opening (211) and the one-way valve port (213) are both smaller than the diameter of the one-way valve core (22).

10. An electromagnetic valve characterized by comprising: The control valve assembly is formed by the riveting process. The electromagnetic valve comprises the control valve assembly according to any one of claims 1 to 9.

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