Electric valve

Abstract

The electric valve includes a valve chamber, a first communication hole (012), and a second communication hole (013), the first and second communication holes each containing a valve body (01) communicating with the valve chamber, a connecting rod member and a valve core member (30), the connecting rod member being movably provided within the valve chamber, the valve core member (30) being attached to the connecting rod member and moving within the valve chamber according to the connecting rod member to connect or block the first and second communication holes, a rotor member (40) located at one end of the connecting rod member away from the valve core member and rotatably provided within the valve chamber, and a connecting member (50) having one end fixed to the rotor member and the other end screwed into the connecting rod member to drive the connecting rod member and move within the valve chamber, and being restricted in the axial direction of the valve chamber relative to the valve body. This electric valve solves the problems of conventional technology, where the structure of the piston member is complicated and the operation is inconvenient, when the valve core assembly is driven by a piston member.

Description

Technical Field

[0001] This application claims the priority of a patent application with an application number of 202410096182.0 and an invention title of "Electric Valve", which was filed with the China National Intellectual Property Administration on January 23, 2024.

[0002] This application relates to the technical field of electric valves, and specifically, to electric valves.

Background Art

[0003] An electric valve generally includes a valve body, a piston member, and a valve core assembly. The valve body is provided with a valve chamber, a first communication hole, and a second communication hole. The first communication hole and the second communication hole are respectively communicated with the valve chamber. The valve core assembly is movably provided in the valve chamber to communicate or block the first communication hole and the second communication hole. The piston member is provided in the valve chamber, and the piston member is drivingly engaged with the valve core member to drive the valve core assembly to move.

[0004] When the piston member drives the valve core assembly to move, it is necessary to introduce a high-pressure medium to one side of the piston member to form a pressure difference on both sides of the piston member to drive the valve core assembly to move. However, the structural design of the piston member is relatively complicated, and the driving method of driving the valve core assembly to move by forming a pressure difference has low convenience.

Summary of the Invention

[0005] This application provides an electric valve to solve the problem that the driving method of the valve core assembly in the prior art has low convenience.

[0006] This application provides an electric valve comprising a valve chamber, a first communication hole, and a second communication hole, the first and second communication holes each comprising a valve body communicating with the valve chamber, a connecting rod member and a valve core member, the connecting rod member being movably provided within the valve chamber, and the valve core member being mounted on a guide frame and moving within the valve chamber according to the connecting rod member to connect or block the first and second communication holes; a rotor member located at one end of the connecting rod member away from the valve core member and rotatably provided within the valve chamber; and a connecting member having one end fixed to the rotor member and the other end screwed into the connecting rod member to drive the connecting rod member to move within the valve chamber and restricted to the axial direction of the valve chamber relative to the valve body.

[0007] Furthermore, the connecting rod member includes a connecting rod and a guide frame arranged sequentially along the direction from the rotor member to the valve core member. The connecting rod is fixedly connected to the guide frame and screwed into the connecting member, and the valve core member is attached to the guide frame.

[0008] Furthermore, the electric valve further includes a valve cover provided within the valve chamber, which is guide-engaged with a connecting rod.

[0009] Furthermore, an insertion hole is provided in the valve cover, which penetrates the valve cover along the axial direction of the valve chamber, and the connecting rod is movably inserted into the insertion hole and guided into the insertion hole.

[0010] Furthermore, a first anti-rotation structure is provided on the side wall of the insertion hole, and a second anti-rotation structure is provided on the side wall of the connecting rod, and the first anti-rotation structure is engaged with the second anti-rotation structure to prevent rotation.

[0011] Furthermore, the valve cover divides the valve chamber into a first chamber and a second chamber distributed along the axial direction, with the rotor member located in the first chamber and the valve core member located in the second chamber.

[0012] Furthermore, a first balancing passage is formed between the connecting rod and the insertion hole, and both ends of the first balancing passage are connected to the first chamber and the second chamber, respectively.

[0013] Furthermore, a second balancing passage is provided in the valve cover, which is eccentrically positioned relative to the insertion hole, and both ends of the second balancing passage are connected to the first chamber and the second chamber, respectively.

[0014] Furthermore, the insertion hole includes guide holes and relief holes that are sequentially connected along the direction from the connecting rod to the connecting member, the diameter of the guide holes being smaller than the diameter of the relief holes, the guide holes being guide-engaged with the connecting rod, and one end of the connecting member away from the rotor member being inserted into the guide holes through the relief holes and screwed into the connecting rod.

[0015] Furthermore, the electric valve further includes a bearing provided within a relief hole, a connecting member rotatably inserted within the bearing, and the outer surface of the connecting member connected to the inner ring of the bearing.

[0016] Furthermore, a limiting portion is provided on the connecting member, and the electric valve further includes an elastic member provided on the connecting member, the bearing is located between the elastic member and the limiting portion, the elastic member and the limiting portion each abut the bearing, and the elastic member is used to give elasticity to the connecting member and bring the limiting portion on the connecting member into contact with the bearing.

[0017] Furthermore, the electric valve further includes a valve seat provided within the valve chamber, which is guide-engaged with a valve core member.

[0018] Furthermore, the guide frame is provided with mounting openings, and the valve core member includes a first valve core and a second valve core that are independent of each other. The first valve core and the second valve core are each mounted within the mounting openings, and the first valve core and the second valve core are in contact with each other. The first valve core is provided corresponding to a first communication hole, and the second valve core is provided corresponding to a second communication hole.

[0019] Furthermore, the connecting rod member is restrictedly engaged with the valve cover, limiting the displacement stroke of the connecting rod member in the axial direction of the valve chamber.

[0020] Furthermore, the side wall of the connecting rod member is provided with a stepped surface used for restrictive engagement with the valve cover.

[0021] Furthermore, the first and second communication holes are each connected to the sides of the valve chamber, and along the axial direction of the valve chamber, one end away from the connecting rod in the guide frame protrudes onto the valve core member, and the other end away from the connecting rod in the guide frame is used to restrictively engage with the other end away from the rotor member in the valve chamber.

[0022] In the application of the technical embodiments of this application, the connecting member is restricted to the axial direction of the valve chamber relative to the valve body, and the rotor member rotates in conjunction with the connecting member, that is, the connecting member does not move in the axial direction of the valve chamber relative to the valve body, but moves along the axial direction of the valve chamber while driving the connecting rod member to rotate, and in the process of the connecting rod member moving, the valve core member moves in conjunction with it along the axial direction of the valve chamber, so that the valve core member connects or blocks the first and second communication holes. In the conventional technical embodiments, it is necessary to introduce a high-pressure medium to one side of the piston member and create a pressure difference on both sides of the piston member to drive and move the valve core assembly. However, the structural design of the piston member is relatively complicated, and the drive method of driving and moving the valve core assembly by creating a pressure difference is not convenient. Compared to conventional designs, the design of this embodiment drives the connecting rod member with the rotor member and connecting member, moving the valve core member in conjunction along the axial direction of the valve chamber, thereby achieving communication or blockage of the first and second communication holes, enabling an on-off valve with zero differential pressure, and its structure is relatively simple and its operation is relatively convenient. [Brief explanation of the drawing]

[0023] The drawings in the specification, which constitute part of this application, are provided for further understanding of this application, and the schematic embodiments and descriptions thereof are for interpretive purposes only and do not unduly limit this application.

[0024] [Figure 1] The structural schematic diagram when the first communication hole and the second communication hole of the electric valve provided by the embodiment of the present application are communicated is shown. [Figure 2] The structural schematic diagram when the first communication hole and the second communication hole of the electric valve provided by the embodiment of the present application are blocked is shown. [Figure 3] The structural schematic diagram of the connecting rod member provided by the embodiment of the present application is shown. [Figure 4] The cross-sectional view of the first angular view of the connecting rod member provided by the embodiment of the present application is shown. [Figure 5] The cross-sectional view of the second angular view of the connecting rod member provided by the embodiment of the present application is shown. [Figure 6] The top view of the connecting rod member provided by the embodiment of the present application is shown. [Figure 7] The structural schematic diagram of the guide frame provided by the embodiment of the present application is shown. [Figure 8] The front view of the guide frame provided by the embodiment of the present application is shown. [Figure 9] The cross-sectional view of one valve cover provided by the embodiment of the present application is shown. [Figure 10] The top view of the valve cover in FIG. 9 is shown. [Figure 11] The cross-sectional view of the other valve cover provided by the embodiment of the present application is shown. [Figure 12] The top view of the valve cover in FIG. 11 is shown.

[0025] Here, the following reference numerals are included in the above drawings. 01 Valve body, 0111 First chamber, 0112 Second chamber, 012 First communication hole, 013 Second communication hole, 014 First sleeve, 015 Second sleeve, 10 Connecting rod, 1001 Second anti-rotation surface, 101 Mounting groove, 102 Locking portion, 103 First limiting structure, 11 Connecting rod, 12 connection blocks, 20 Guide frame, 201 Mounting port, 202 Locking hole, 203 Second limiting structure, 21 first plate, 22 second plate, 30 Valve core members, 31 First valve core, 32 Second valve core, 33 Elastic part, 40 rotor components, 50 Connecting member, 501 Restricting part, 60 valve cover, 601 Insertion hole, 6010 First anti-rotation surface, 6011 Guide hole, 6012 Relief hole, 6013 Recessed groove structure, 602 Second balancing passage, 70 bearings, 80 Elastic members, 90 valve seat. [Modes for carrying out the invention]

[0026] With reference to the drawings in the embodiments of this application, the technical aspects of the embodiments of this application are described below clearly and completely, although it is clear that the embodiments described are only a selection of embodiments of this application, and not all embodiments. The description of at least one exemplary embodiment below is, in practice, merely descriptive and does not limit this application or its application or use in any way. All other embodiments that a person skilled in the art could obtain without creative effort based on the embodiments of this application are all within the scope of protection of this application.

[0027] As shown in Figures 1 to 3, embodiments of the present application provide an electric valve comprising a valve body 01, a valve core assembly, a rotor member 40, and a connecting member 50. The valve body 01 is provided with a valve chamber, a first communication hole 012, and a second communication hole 013, the first and second communication holes 012 and 013 communicating with the valve chamber, respectively. The valve core assembly includes a connecting rod member and a valve core member 30, the connecting rod member being movably mounted within the valve chamber. The valve core member 30 is attached to the connecting rod member and moves within the valve chamber in accordance with the connecting rod member to connect or block the first and second communication holes 012 and 013. The rotor member 40 is located at one end of the connecting rod member away from the valve core member 30, and the rotor member 40 is rotatably mounted within the valve chamber. One end of the connecting member 50 is fixed to the rotor member 40, and the other end of the connecting member 50 is screwed into the connecting rod member, which drives the connecting rod member to move within the valve chamber, and the connecting member 50 is restricted in the axial direction of the valve chamber relative to the valve body 01.

[0028] In the application of the technical embodiments of this application, the connecting member 50 is restricted to the axial direction of the valve chamber relative to the valve body 01, that is, the connecting member 50 does not move in the axial direction of the valve chamber relative to the valve body 01, and the rotor member 40 rotates in conjunction with the connecting member 50, and the connecting member 50 drives the connecting rod member to rotate, and at the same time moves the connecting rod member along the axial direction of the valve chamber, and in the process of the movement of the connecting rod member, the valve core member 30 is moved in conjunction with it along the axial direction of the valve chamber, so that the valve core member 30 connects or blocks the first communication hole 012 and the second communication hole 013. In the conventional technical embodiments, it is necessary to introduce a high-pressure medium to one side of the piston member and create a pressure difference on both sides of the piston member to drive and move the valve core assembly. However, the structural design of the piston member is relatively complicated, and the drive method of driving and moving the valve core assembly by creating a pressure difference is not convenient. Compared to conventional designs, the design of this embodiment drives the connecting rod member with the rotor member 40 and the connecting member 50, which in turn moves the valve core member 30 along the axial direction of the valve chamber, thereby achieving communication or blockage of the first communication hole 012 and the second communication hole 013. Its structure is relatively simple and its operability is relatively high.

[0029] Furthermore, the connecting rod member includes a connecting rod 10 and a guide frame 20 arranged sequentially along the direction from the rotor member 40 to the valve core member 30, with the connecting rod 10 being fixedly connected to the guide frame 20. The connecting rod 10 is screwed into a connecting member 50, and the valve core member 30 is attached to the guide frame 20. This embodiment does not limit the specific method of connection between the connecting rod 10 and the guide frame 20, and fixed connection can be achieved via fastening members, locking, welding, etc.

[0030] In the connecting rod member of this embodiment, the first end of the connecting rod 10 is injection molded into the guide frame 20. This design reduces the possibility of loosening in the connection between the connecting rod 10 and the guide frame 20, improves the stability of the connection between the connecting rod 10 and the guide frame 20, and improves the stability of the valve core member 30 during its movement. When the connecting rod is connected to the guide frame via a fastening member, the fastening member is prone to loosening after prolonged use, affecting the stability of the connection between the connecting rod and the guide frame. The design of this embodiment improves the stability of the connection between the connecting rod 10 and the guide frame 20, and since the connecting rod 10 is injection molded into the guide frame 20, its assembly convenience is further enhanced.

[0031] As shown in Figures 3 and 4, specifically, the guide frame 20 has a plate-like structure, the longitudinal direction of the guide frame 20 is the same as the longitudinal direction of the connecting rod 10, and the width direction of the guide frame 20 is perpendicular to the longitudinal direction of the connecting rod 10. In Figure 3, the Z direction is the longitudinal direction of the connecting rod 10 and the guide frame 20, the X direction is the width direction of the connecting rod 10 and the guide frame 20, and the Y direction is the thickness direction of the connecting rod 10 and the guide frame 20.

[0032] As shown in Figures 3 to 5, in this embodiment, a mounting groove 101 is provided on the end face of the first end of the connecting rod 10, and one end of the guide frame 20 is inserted into the mounting groove 101 and connected to the connecting rod 10. This design increases the contact area between the connecting rod 10 and the guide frame 20, and further improves the stability of the connection between the connecting rod 10 and the guide frame 20.

[0033] Furthermore, a locking structure is provided between the connecting rod 10 and the guide frame 20, and the connecting rod 10 and the guide frame 20 are locked and engaged by the locking structure. The design of the locking structure further reduces the possibility of separation between the connecting rod 10 and the guide frame 20, and further enhances the stability of the connection between the connecting rod 10 and the guide frame 20.

[0034] This embodiment does not limit the specific form of the locking structure.

[0035] In this embodiment, the locking structure includes a locking hole 202 and a locking portion 102 that are locked and engaged with each other. The shape of the locking portion 102 is matched to the shape of the locking hole 202. The locking hole 202 is provided at one end of the guide frame 20 that is inserted into the mounting groove 101. The locking portion 102 is provided in the mounting groove 101 and is integrally molded with the connecting rod 10, and is inserted into the locking hole 202 and locked with the locking hole 202.

[0036] In another embodiment of this design, the locking hole 202 is provided on the side wall of the mounting groove 101, and the locking portion 102 is provided on the side wall of one end of the guide frame 20 that is inserted into the mounting groove 101, is integrally molded with the guide frame 20, and engages with the locking hole 202.

[0037] This embodiment does not limit the specific shape of the locking hole 202, and it may be set as a circular hole, a specially shaped hole, or a polygonal hole, etc.

[0038] As shown in Figures 4, 7, and 8, in this embodiment, the locking hole 202 is an oval-shaped hole, the longitudinal direction of the oval-shaped hole is the same as the longitudinal direction of the connecting rod member, and the dimension A along the longitudinal direction of the connecting rod member in the oval-shaped hole is larger than the dimension B along the width direction of the connecting rod member in the oval-shaped hole. This design increases the tensile force of the connecting rod member, and the dimension along the longitudinal direction of the connecting rod member in the oval-shaped hole is larger than the dimension along the width direction of the connecting rod member, thus saving the space occupied by the locking hole 202 in the width direction of the guide frame 20.

[0039] Furthermore, this embodiment does not limit the specific number of locking structures. In this embodiment, two sets of locking structures are provided, and the two sets of locking structures are distributed at intervals along the width direction of the guide frame 20.

[0040] As shown in Figures 3 to 6, in this embodiment, the connecting rod 10 includes connecting rods 11 and connecting blocks 12 arranged sequentially along the longitudinal direction. The cross-sectional area of ​​the connecting block 12 is larger than that of the connecting rod 11, and the mounting groove 101 is provided on the end face of the connecting block 12 at one end away from the connecting rod 11. This design ensures the structural strength of the connecting block 12 and improves the stability of the connection between the connecting rod 10 and the guide frame 20.

[0041] As shown in Figures 3 to 5, both ends of the mounting groove 101 extend along the width direction of the connecting rod member to the two end faces of the connecting block 12. The guide frame 20 includes a first plate 21 and a second plate 22 arranged sequentially along the longitudinal direction, with the width of the first plate 21 being smaller than the width of the second plate 22. A locking hole 202 is provided in the first plate 21, and the first plate 21 is inserted into the mounting groove 101. Along the width direction of the guide frame 20, both ends of the first plate 21 are located outside the mounting groove 101. This design improves the convenience of injection molding to the connecting rod 10.

[0042] As shown in Figures 1 and 3, in this embodiment, the guide frame 20 is provided with a mounting opening 201, which is a circular hole and penetrates the guide frame 20 along a perpendicular direction that is perpendicular to the extending direction of the connecting rod member. That is, in this embodiment, the mounting opening 201 penetrates the guide frame 20 along the thickness direction of the guide frame 20 and is used to mount the valve core member 30. The design of the mounting opening 201 makes its structure simple and facilitates assembly to the valve core member 30.

[0043] In this embodiment, the first communication hole 012 and the second communication hole 013 are each connected to the side of the valve chamber, and the valve core member 30 includes a first valve core 31, a second valve core 32, and an elastic portion 33. The first valve core 31 and the second valve core 32 are in contact with each other, and the elastic portion 33 is provided between the first valve core 31 and the second valve core 32 to provide a force that separates the first valve core 31 and the second valve core 32 from each other. This design makes it easy to assemble the valve core member 30 and ensures the sealing effect of the first valve core 31 and the second valve core 32 with respect to the communication holes of the electric valve.

[0044] As shown in Figures 1 and 2, the electric valve further includes a valve cover 60, which is provided within the valve chamber, and the connecting rod 10 is guided and engaged with the valve cover 60. The design of the valve cover 60 allows for the guidance of the movement of the connecting rod 10, reduces the possibility of vibration occurring during the movement of the connecting rod 10, improves the stability during the movement of the connecting rod 10, improves the stability of the connecting rod member moving in conjunction with the valve core member 30, and improves the stability when opening and closing the valve.

[0045] In this embodiment, an insertion hole 601 is provided in the valve cover 60, and the insertion hole 601 is provided through the valve cover 60 along the axial direction of the valve chamber. The connecting rod 10 is movably inserted into the insertion hole 601 and guide-engaged with the insertion hole 601. The design of the insertion hole 601 results in a simple structure and excellent guiding effect.

[0046] In this embodiment, a first anti-rotation structure is provided on the side wall of the insertion hole 601, and a second anti-rotation structure is provided on the side wall of the connecting rod 10. The first anti-rotation structure is engaged with the second anti-rotation structure to prevent rotation. The design of the first and second anti-rotation structures ensures that the connecting rod member can move only along the axial direction of the valve chamber, avoids situations in which the connecting rod member rotates during the movement process, and improves the stability of the connecting rod member during the movement process.

[0047] This embodiment does not limit the specific forms of the first anti-rotation structure and the second anti-rotation structure.

[0048] As shown in Figures 1, 3, 9, and 10, in this embodiment, a first anti-rotation surface 6010 is provided on the side wall of the insertion hole 601, the first anti-rotation surface 6010 is planar, and the direction of extension of the first anti-rotation surface 6010 is the same as the direction of extension of the insertion hole 601, a second anti-rotation surface 1001 is provided on the side wall of the connecting rod 11, the direction of extension of the second anti-rotation surface 1001 is the same as the direction of extension of the connecting rod 10, and the first anti-rotation surface 6010 is engaged with the second anti-rotation surface 1001 to prevent rotation.

[0049] In this embodiment, the shape of the insertion hole 601 is matched to the shape of the connecting rod 11. Specifically, the outer contour of the cross-section of the connecting rod 11 is polygonal, and the multiple outer walls of the connecting rod 11 each form multiple first anti-rotation surfaces. This design simplifies the structure and makes it easy to provide guidance and prevent rotation of the insertion hole 601 relative to the connecting rod 11.

[0050] Furthermore, the valve body 01 includes a first sleeve 014 and a second sleeve 015, with the open ends of the first sleeve 014 and the second sleeve 015 facing each other, forming a valve chamber between the first sleeve 014 and the second sleeve 015. The valve cover 60 is an integral structure and is located between the first sleeve 014 and the second sleeve 015. One end of the valve cover 60 is inserted into the opening of the first sleeve 014 and connected to the first sleeve 014, and the other end of the valve cover 60 is inserted into the opening of the second sleeve 015 and connected to the second sleeve 015. The valve cover 60 divides the valve chamber into a first chamber 0111 and a second chamber 0112 distributed along the axial direction.

[0051] In this embodiment, a first stepped structure and a second stepped structure are provided on the outer wall of the valve cover 60, spaced apart along the axial direction of the valve cover 60. The first stepped structure is restrictedly engaged with the end face of the open end of the first sleeve 014, and the second stepped structure is restrictedly engaged with the end face of the open end of the second sleeve 015. This design improves the assembly accuracy between the first sleeve 014 and the valve cover 60, and also improves the assembly accuracy between the second sleeve 015 and the valve cover 60.

[0052] Specifically, the rotor member 40 is located in the first chamber 0111, and the valve core member 30 is located in the second chamber 0112. In this embodiment, the rotor member 40 is located in the first sleeve 014, and the valve core member 30 is located in the second sleeve 015. This design simplifies the structure, reduces the number of parts in the electric valve as much as possible, and makes assembly relatively easy.

[0053] Furthermore, a first balancing passage is formed between the connecting rod 10 and the insertion hole 601, and both ends of the first balancing passage are connected to the first chamber 0111 and the second chamber 0112, respectively. The design of the first balancing passage prevents the rotor member 40 from accumulating air in the first chamber 0111 and generating a pressure difference, thereby improving the rotational flexibility of the rotor member 40.

[0054] This embodiment does not limit the specific manner in which the first equilibrium pathway is formed.

[0055] As shown in Figures 1, 9, and 10, in this embodiment, a groove structure 6013 is provided on the side wall of the through hole 601, the groove structure 6013 is provided corresponding to the first anti-rotation surface 6010, the extension direction of the groove structure 6013 is the same as the extension direction of the insertion hole 601, one end of the groove structure 6013 is in communication with the first chamber 0111 and the other end is in communication with the second chamber 0112, and the groove structure 6013 forms a first balancing passage.

[0056] In some other embodiments of this model, a flow guide groove is provided on the side wall of the connecting rod 11, the flow guide groove is provided corresponding to the second rotation prevention surface 1001, the direction of extension of the flow guide groove is the same as the direction of extension of the connecting rod 11, one end of the flow guide groove is in communication with the first chamber 0111 and the other end is in communication with the second chamber 0112, and the flow guide groove forms a first balancing passage.

[0057] As shown in Figures 11 and 12, in some other embodiments of this design, the valve cover 60 is further provided with a second balancing passage 602, which is eccentrically positioned with respect to the insertion hole 601, and both ends of the second balancing passage 602 are in communication with the first chamber 0111 and the second chamber 0112, respectively. The design of the second balancing passage 602 prevents the rotor member 40 from accumulating air in the first chamber 0111 and generating a pressure difference, thereby improving the rotational flexibility of the rotor member 40. Furthermore, the design described above facilitates the fabrication and molding of the second balancing passage 602.

[0058] As shown in Figures 1 and 2, in this embodiment, the insertion hole 601 includes a guide hole 6011 and a relief hole 6012 that are sequentially connected along the direction from the connecting rod 10 to the connecting member 50, the diameter of the guide hole 6011 being smaller than the diameter of the relief hole 6012, the guide hole 6011 being guide-engaged with the connecting rod 10, and one end of the connecting member 50 away from the rotor member 40 being screwed into the connecting rod 10 through the relief hole 6012.

[0059] Furthermore, the electric valve further includes a bearing 70 provided within the relief hole 6012, and the connecting member 50 is rotatably inserted into the bearing 70, with the outer circumferential surface of the connecting member 50 connected to the inner ring of the bearing 70. The design of the bearing 70 enables connection to the connecting member 50, reduces the possibility of vibration occurring in the connecting member 50, and improves the stability of the rotation process of the connecting member 50. In addition, it can reduce the rotational friction of the connecting member 50 and improve transmission efficiency.

[0060] Specifically, the valve cover 60 includes a first segment and a second segment connected to each other along the axial direction, the diameter of the first segment being smaller than the diameter of the second segment, the first segment being inserted into the first sleeve 014, and one end of the first segment away from the second segment being inserted into the rotor member 40. The open end of the first sleeve 014 is fitted to the end of the second segment connected to the first segment, and the open end of the second sleeve 015 is fitted to the end of the second segment away from the first segment. This design further reduces the number of parts in the motorized valve and improves the compactness of the structure of the motorized valve.

[0061] As shown in Figures 1 and 2, in this embodiment, a limiting portion 501 is provided on the connecting member 50, the electric valve further includes an elastic member 80 provided on the connecting member 50, the bearing 70 is located between the elastic member 80 and the limiting portion 501, the elastic member 80 and the limiting portion 501 each abut against the bearing 70, the elastic member 80, the bearing 70 and the limiting portion 501 are distributed sequentially along the direction from the connecting member 50 to the connecting rod 10, and the elastic member 80 is used to give elasticity to the connecting member 50 and to bring the limiting portion 501 on the connecting member 50 into contact with the bearing 70. With this design, the elastic member 80 is used to apply force to the bearing 70, so that the bearing 70 is always in contact with and engaged with the limiting portion 501, eliminating the gap between the bearing 70 and the limiting portion 501, and the connecting member 50 is constrained and limited in the axial direction, that is, the connecting member 50 has degrees of freedom only in the rotational direction, reducing or avoiding the possibility of the connecting member 50 moving in the axial direction.

[0062] Specifically, the elastic member 80 includes a spring and a circlip member connected to each other. The spring is fitted into the connecting member 50, one end of the spring abuts against the end face of the bearing 70 away from the connecting rod 10, and the circlip member is provided at the end of the spring away from the bearing 70, is locked to the connecting member 50, and abuts against the end of the spring away from the bearing 70.

[0063] Furthermore, the first communication hole 012 and the second communication hole 013 are each connected to the side of the second chamber 0112, and the electric valve further includes a valve seat 90 provided in the second chamber 0112, which is guide-engaged with the valve core member 30. The design of the valve seat 90 allows for the movement of the valve core member 30 and further improves the stability of the valve core member 30.

[0064] In this embodiment, the valve seat 90 is provided in the second chamber 0112 and includes a first seat body and a second seat body, the first seat body and the second seat body are provided corresponding to a first communication hole 012 and a second communication hole 013, respectively, the first seat body is provided with a first opening and the second seat body is provided with a second opening, the first opening and the second opening are in communication with the first communication hole 012 and the second communication hole 013, respectively. A guide space is formed between the first seat body and the second seat body, the valve core member 30 is movably provided in the guide space and is guide-engaged with the guide space.

[0065] Furthermore, the connecting rod member is restrictedly engaged with the valve cover 60, limiting the displacement stroke of the connecting rod member in the axial direction of the valve chamber.

[0066] As shown in Figures 1 to 3, specifically, a first limiting structure 103 is formed on the stepped surface between the connecting rod 11 and the connecting block 12. The first limiting structure 103 is abutted and engaged with the end face of one end of the valve cover 60 that is close to the valve core member 30, and is used to limit the displacement stroke of the connecting rod member in the axial direction of the valve chamber. This design results in a simple structure and eliminates the need for additional limiting structures.

[0067] Furthermore, along the axial direction of the valve chamber, one end of the guide frame 20 away from the connecting rod 10 is provided to protrude from the valve core member 30, and a second limiting structure 203 is formed on the end face of the end of the guide frame 20 away from the connecting rod 10, and is used to limit engagement with the end of the valve chamber away from the rotor member 40. This design avoids situations in which the end face of the valve core member 30 comes into contact with the end of the valve chamber away from the rotor member 40, and thus avoids situations in which the valve core member 30 is pressed and deformed.

[0068] It should be noted that the terminology used herein is for the purpose of describing specific embodiments and is not intended to limit the exemplary embodiments of this application. As used herein, unless otherwise explicitly stated in the context, the singular form is also intended to include the plural form, and furthermore, when the terms “encompassing” and / or “containing” are used herein, it should be understood that there are features, steps, operations, devices, assemblies and / or combinations thereof.

[0069] Unless otherwise specifically stated, the relative arrangements, formulas, and numerical values ​​of the components and steps described in these embodiments do not limit the scope of this application. At the same time, for the sake of descriptive convenience, it should be understood that the dimensions of the parts shown in the drawings are not drawn according to actual proportional relationships. While we do not discuss in detail the art, methods, and equipment already known to those skilled in the art, where appropriate, the art, methods, and equipment described should be considered part of the permitted specification. In all the examples shown and discussed herein, any specific values ​​are merely illustrative and should not be interpreted as limiting. Accordingly, other examples in the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters indicate similar elements in subsequent drawings, and therefore, once an element is defined in one drawing, no further explanation is required for it in subsequent drawings.

[0070] In the description of this application, directions or positional relationships indicated by directional terms such as "front," "back," "up," "down," "left," "right," "lateral," "vertical," "horizontal," and "top" and "bottom" are usually directions or positional relationships based on the illustrations and are merely for the convenience and simplification of the description in this application. Unless otherwise stated, these directional terms do not indicate or imply that the specified device or element has a particular direction or must be configured and operated in a particular direction, and should not be understood as limiting the scope of protection of this application. The directional terms "inside" and "outside" should be understood as meaning inside and outside with respect to the contour of each component itself.

[0071] For convenience of description, spatially relative terms such as "on top of," "above," "on the top surface," and "on the top surface" may be used here to describe the spatial positional relationship between one illustrated device or feature and another device or feature. Spatially relative terms should be understood as intended to include different orientations of the device in use or operation, in addition to the orientation described in the drawing. For example, if the device in the drawing is reversed, a device described as "above another device or structure" or "on top of another device or structure" will subsequently be positioned as "below another device or structure" or "below another device or structure." Thus, the exemplary term "above" may include both the orientations of "above" and "below." The device may be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here may be interpreted accordingly.

[0072] Furthermore, it should be noted that the use of words such as "first," "second," etc., to specify parts is simply for the purpose of easily distinguishing corresponding parts, and unless otherwise stated, the aforementioned words do not have any special meaning and should not be understood as limiting the scope of protection of this application.

[0073] The foregoing describes preferred embodiments of this application and is not intended to limit it. Those skilled in the art will know that this application is subject to various modifications and changes. Any modifications, equivalent substitutions, improvements, etc., made within the scope of the intent and principles of this application should be included within the scope of protection of this application.

Claims

1. A valve chamber, a first communication hole (012), and a second communication hole (013) are provided, and the first communication hole (012) and the second communication hole (013) are each connected to the valve chamber and a valve body (01), A valve core assembly comprising a connecting rod member and a valve core member (30), wherein the connecting rod member is movably provided within the valve chamber, and the valve core member (30) is attached to the connecting rod member and moves within the valve chamber in accordance with the connecting rod member to connect or block the first communication hole (012) and the second communication hole (013), A rotor member (40) located at one end of the connecting rod member away from the valve core member (30), the rotor member (40) is rotatably provided within the valve chamber, An electric valve comprising a connecting member (50), one end of which is fixedly provided to the rotor member (40), and the other end of which is screwed into the connecting rod member, thereby driving the connecting rod member to move within the valve chamber along the axial direction of the valve chamber, and the connecting member (50) being restricted to the axial direction of the valve chamber with respect to the valve body (01).

2. The electric valve according to claim 1, wherein the connecting rod member includes a connecting rod (10) and a guide frame (20) provided in order along the direction from the rotor member (40) to the valve core member (30), the connecting rod (10) is fixedly connected to the guide frame (20) and screwed with the connecting member (50), and the valve core member (30) is attached to the guide frame (20).

3. The electric valve according to claim 2, further comprising a valve cover (60) provided in the valve chamber, the valve cover (60) being guide-engaged with the connecting rod (10).

4. The electric valve according to claim 3, wherein the valve cover (60) is provided with an insertion hole (601), the insertion hole (601) is provided through the valve cover (60) along the axial direction of the valve chamber, and the connecting rod (10) is movably inserted into the insertion hole (601) and guide-engaged with the insertion hole (601).

5. The electric valve according to claim 4, wherein a first rotation prevention structure is provided on the side wall of the insertion hole (601), a second rotation prevention structure is provided on the side wall of the connecting rod (10), and the first rotation prevention structure is rotationally engaged with the second rotation prevention structure.

6. The electric valve according to claim 4, wherein the valve cover (60) divides the valve chamber into a first chamber (0111) and a second chamber (0112) distributed along the axial direction, the rotor member (40) is located in the first chamber (0111), and the valve core member (30) is located in the second chamber (0112).

7. A first balancing passage is formed between the connecting rod (10) and the insertion hole (601), and both ends of the first balancing passage are in communication with the first chamber (0111) and the second chamber (0112), and / or The electric valve according to claim 6, wherein the valve cover (60) is provided with a second balancing passage (602), the second balancing passage (602) is provided eccentrically with respect to the insertion hole (601), and both ends of the second balancing passage (602) are in communication with the first chamber (0111) and the second chamber (0112), respectively.

8. The electric valve according to claim 4, wherein the insertion hole (601) includes a guide hole (6011) and a relief hole (6012) that are sequentially connected along the direction from the connecting rod (10) to the connecting member (50), the diameter of the guide hole (6011) is smaller than the diameter of the relief hole (6012), the guide hole (6011) is guide-engaged with the connecting rod (10), and one end of the connecting member (50) away from the rotor member (40) is inserted into the guide hole (6011) through the relief hole (6012) and screwed with the connecting rod (10).

9. The electric valve according to claim 8, further comprising a bearing (70) provided in the relief hole (6012), the connecting member (50) being rotatably inserted into the bearing (70), and the outer circumferential surface of the connecting member (50) being connected to the inner ring of the bearing (70).

10. The connecting member (50) is provided with a limiting portion (501), and the electric valve is The electric valve according to claim 9, further comprising an elastic member (80) provided on the connecting member (50), wherein the bearing (70) is located between the elastic member (80) and the restricting portion (501), the elastic member (80) and the restricting portion (501) each abut against the bearing (70), and the elastic member (80) is used to provide elasticity to the connecting member (50) and to bring the restricting portion (501) on the connecting member (50) into contact with the bearing (70).

11. The electric valve according to claim 1, further comprising a valve seat (90) provided in the valve chamber, the valve seat (90) being guide-engaged with the valve core member (30).

12. The electric valve according to claim 2, wherein the guide frame (20) is provided with a mounting opening (201), the valve core member (30) includes a first valve core (31) and a second valve core (32) which are independent of each other, the first valve core (31) and the second valve core (32) are each mounted in the mounting opening (201), the first valve core (31) and the second valve core (32) are in contact with each other, the first valve core (31) is provided corresponding to the first communication hole (012), and the second valve core (32) is provided corresponding to the second communication hole (013).

13. The electric valve according to claim 3, wherein the connecting rod member is restrictedly engaged with the valve cover (60) and restricts the displacement stroke of the connecting rod member in the axial direction of the valve chamber.

14. The electric valve according to claim 13, wherein the side wall of the connecting rod member is provided with a stepped surface used for restrictive engagement with the valve cover (60).

15. The electric valve according to claim 2, wherein the first communication hole (012) and the second communication hole (013) each communicate with the side of the valve chamber, and along the axial direction of the valve chamber, one end of the guide frame (20) away from the connecting rod (10) protrudes from the valve core member (30), and the other end of the guide frame (20) away from the connecting rod (10) is used to restrictively engage with the other end of the valve chamber away from the rotor member (40).

16. The electric valve according to claim 2, wherein the first end of the connecting rod (10) is injection molded onto the guide frame (20).

17. The electric valve according to claim 16, wherein a mounting groove (101) is provided on the end face of the first end of the connecting rod (10), and one end of the guide frame (20) is inserted into the mounting groove (101) and connected to the connecting rod (10).

18. The electric valve according to claim 17, wherein a locking structure is provided between the connecting rod (10) and the guide frame (20), and the connecting rod (10) and the guide frame (20) are locked and engaged by the locking structure.

19. The aforementioned locking structure is A locking hole (202) is provided at one end of the guide frame (20) which is inserted into the mounting groove (101), The electric valve according to claim 18, comprising a locking portion (102) provided in the mounting groove (101) and integrally molded with the connecting rod (10), the locking portion (102) being inserted into the locking hole (202) and locked with the locking hole (202).

20. The electric valve according to claim 19, wherein the dimension of the locking hole (202) along the longitudinal direction of the connecting rod member is larger than the dimension of the connecting rod member along the width direction.

21. The electric valve according to claim 17, wherein the connecting rod (10) includes a connecting rod (11) and a connecting block (12) arranged sequentially along the longitudinal direction, the cross-sectional area of ​​the connecting block (12) is larger than the cross-sectional area of ​​the connecting rod (11), and the mounting groove (101) is provided on the end face of the connecting block (12) at one end away from the connecting rod (11).

22. The electric valve according to claim 16, wherein a screw hole is provided at one end of the connecting rod (10) away from the guide frame (20), and one end of the connecting member (50) away from the rotor member (40) is inserted into the screw hole and screwed with the connecting rod (10).

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