Electric valve

Abstract

An electric valve, comprising: a valve body (01) provided with a valve cavity, a first communication hole (012) and a second communication hole (013), the first communication hole and the second communication hole being separately communicated with the valve cavity; a valve core assembly, comprising a connection rod component and a valve core component (30), the connection rod component being movably arranged in the valve cavity, the valve element component (30) being mounted on the connection rod component, and the valve element component (30) moving in the valve cavity along with the connection rod component, so as to communicate the first communication hole with the second communication hole or partition the first communication hole from the second communication hole; a rotor component (40), located at the end of the connection rod component away from the valve core component, the rotor component (40) being rotatably arranged in the valve cavity; and a connection member (50), one end of the connection member (50) being fixedly arranged on the rotor component, and the other end of the connection member (50) being in threaded fit with the connection rod component, so as to drive the connection rod component to move in the valve cavity, the connection member being limited in the axial direction of the valve cavity relative to the valve body. The electric valve can solve the problems in the prior that when a valve element assembly is driven by a piston component, the structure of the piston component is complex and the operation convenience is poor.

Description

Electric valve

[0001] This application claims priority to the patent application filed with the State Intellectual Property Office of China on January 23, 2024, with application number 2024100961820 and invention name “Electric Valve”. Technical Field

[0002] The present application relates to the technical field of electric valves, and in particular to an electric valve. Background Art

[0003] An electric valve usually includes a valve body, a piston component and a valve core assembly. The valve body is provided with a valve cavity, a first communicating hole and a second communicating hole. The first communicating hole and the second communicating hole are respectively connected to the valve cavity. The valve core assembly is movably arranged in the valve cavity to connect or isolate the first communicating hole and the second communicating hole. The piston component is arranged in the valve cavity. The piston component cooperates with the valve core component to drive the valve core assembly to move.

[0004] To drive the valve core assembly through the piston, high-pressure media must be introduced into one side of the piston to create a pressure differential on both sides of the piston to drive the valve core assembly. However, the piston assembly's structural design is relatively complex, and the pressure differential method of driving the valve core assembly is inconvenient. Summary of the Invention

[0005] The present application provides an electric valve to solve the problem of poor convenience in driving a valve core assembly in the prior art.

[0006] The present application provides an electric valve, which includes: a valve body, provided with a valve cavity, a first connecting hole and a second connecting hole, the first connecting hole and the second connecting hole being connected to the valve cavity respectively; a valve core assembly, including a connecting rod part and a valve core part, the connecting rod part being movably arranged in the valve cavity; the valve core part being installed on a guide frame, the valve core part moving with the connecting rod part in the valve cavity to connect or block the first connecting hole and the second connecting hole; a rotor part, located at an end of the connecting rod part away from the valve core part, the rotor part being rotatably arranged in the valve cavity; a connecting member, one end of the connecting member being fixedly arranged on the rotor member, the other end of the connecting member being threadedly engaged with the connecting rod part to drive the connecting rod part to move in the valve cavity, and the connecting member being limited relative to the valve body in the axial direction of the valve cavity.

[0007] Furthermore, the connecting rod component includes a connecting rod and a guide frame arranged in sequence along the direction from the rotor component to the valve core component, the connecting rod and the guide frame are fixedly connected, the connecting rod is threadedly matched with the connecting piece, and the valve core component is installed on the guide frame.

[0008] Furthermore, the electric valve further comprises: a valve cover, which is arranged in the valve cavity, and the connecting rod is guided and matched with the valve cover.

[0009] Furthermore, the valve cover is provided with a through hole, which passes through the valve cover along the axial direction of the valve cavity. The connecting rod is movably inserted into the through hole, and the connecting rod is guided and matched with the through hole.

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

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

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

[0013] Furthermore, a second balancing channel is provided on the valve cover. The second balancing channel is eccentrically arranged with respect to the through hole. Two ends of the second balancing channel are respectively communicated with the first chamber and the second chamber.

[0014] Furthermore, the penetration hole includes a guide hole and an avoidance hole that are connected in sequence along the direction from the connecting rod to the connecting piece. The aperture size of the guide hole is smaller than the aperture size of the avoidance hole. The guide hole cooperates with the connecting rod guide. The end of the connecting piece away from the rotor component is penetrated into the guide hole through the avoidance hole and cooperates with the connecting rod thread.

[0015] Furthermore, the electric valve also includes a bearing, which is arranged in the avoidance hole. The connecting piece is rotatably inserted into the bearing, and the outer peripheral surface of the connecting piece is connected to the inner ring of the bearing.

[0016] Furthermore, a limiting portion is provided on the connecting member, and the electric valve also includes: an elastic component, which is provided on the connecting member, the bearing is located between the elastic component and the limiting portion, the elastic component and the limiting portion are respectively in contact with the bearing, and the elastic component is used to apply elastic force to the connecting member so that the limiting portion on the connecting member contacts the bearing.

[0017] Furthermore, the electric valve further comprises: a valve seat, which is arranged in the valve cavity and is guided and matched with the valve core component.

[0018] Furthermore, an installation port is provided on the guide frame, and the valve core component 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 respectively installed in the installation port, the first valve core and the second valve core are abutted, the first valve core is corresponding to the first connecting hole, and the second valve core is corresponding to the second connecting hole.

[0019] Furthermore, the connecting rod component is limitedly matched with the valve cover to limit the displacement stroke of the connecting rod component in the axial direction of the valve cavity.

[0020] Furthermore, a stepped surface is provided on the side wall of the connecting rod component, and the stepped surface is used for limiting cooperation with the valve cover.

[0021] Furthermore, the first connecting hole and the second connecting hole are respectively connected to the side of the valve cavity. Along the axial direction of the valve cavity, the end of the guide frame away from the connecting rod protrudes from the valve core component, and the end of the guide frame away from the connecting rod is used to limit and cooperate with the end of the valve cavity away from the rotor component.

[0022] With the technical solution of the present application, the connecting member is positioned relative to the valve body in the axial direction of the valve cavity. Rotation of the rotor assembly drives the connecting member to rotate, i.e., the connecting member does not move relative to the valve body in the axial direction of the valve cavity. The connecting member drives the connecting rod assembly to move along the axial direction of the valve cavity while rotating. During this movement of the connecting rod assembly, the valve core assembly moves along the axial direction of the valve cavity, thereby connecting or disconnecting the first connecting hole and the second connecting hole. Conventional solutions require the introduction of high-pressure medium into one side of the piston assembly and creating a pressure differential between the two sides of the piston assembly to drive the valve core assembly to move. However, the structural design of the piston assembly is relatively cumbersome, and the drive method of driving the valve core assembly by creating a pressure differential is inconvenient. Compared with conventional solutions, the present solution utilizes the rotor assembly and the connecting member to drive the connecting rod assembly to move the valve core assembly along the axial direction of the valve cavity, thereby connecting or disconnecting the first connecting hole and the second connecting hole, thereby realizing a zero-pressure differential switching valve. Its structure is relatively simple and its operation is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings that constitute part of this application are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0024] FIG1 shows a schematic structural diagram of a first communicating hole and a second communicating hole of an electric valve provided by an embodiment of the present application when the electric valve is connected;

[0025] FIG2 shows a schematic structural diagram of a first communicating hole and a second communicating hole of an electric valve provided by an embodiment of the present application when the electric valve is isolated;

[0026] FIG3 shows a schematic structural diagram of a connecting rod component provided in an embodiment of the present application;

[0027] FIG4 shows a cross-sectional view of a connecting rod component provided by an embodiment of the present application from a first perspective;

[0028] FIG5 shows a cross-sectional view of a connecting rod component from a second perspective provided by an embodiment of the present application;

[0029] FIG6 shows a top view of a connecting rod component provided in an embodiment of the present application;

[0030] FIG7 shows a schematic structural diagram of a guide frame provided in an embodiment of the present application;

[0031] FIG8 shows a front view of a guide frame provided in an embodiment of the present application;

[0032] FIG9 shows a cross-sectional view of a valve cover according to an embodiment of the present application;

[0033] FIG10 shows a top view of the valve cover in FIG9 ;

[0034] FIG11 shows a cross-sectional view of another valve cover provided in an embodiment of the present application;

[0035] FIG. 12 shows a top view of the valve cover in FIG. 11 .

[0036] The above drawings include the following reference numerals: 01, valve body; 0111, first chamber; 0112, second chamber; 012, first communicating hole; 013, second communicating hole; 014, first sleeve; 015, second sleeve; 10, connecting rod; 1001, second anti-rotation surface; 101, mounting groove; 102, clamping portion; 103, first limiting structure; 11, connecting rod; 12, connecting block; 20, guide frame; 201, mounting opening; 202, clamping hole; 203, second limiting structure; 21, first plate; 22, second plate; 30, valve core component; 31, first valve core; 32, second valve core; 33, elastic portion; 40, rotor component; 50, connecting member; 501, limiting portion; 60, valve cover; 601. Through hole; 6010. First anti-rotation surface; 6011. Guide hole; 6012. Avoidance hole; 6013. Groove structure; 602. Second balancing channel; 70. Bearing; 80. Elastic component; 90. Valve seat. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0038] As shown in Figures 1 to 3, an embodiment of the present application provides an electric valve comprising a valve body 01, a valve core assembly, a rotor component 40, and a connector 50. The valve body 01 is provided with a valve cavity, a first connecting hole 012, and a second connecting hole 013, each of which communicates with the valve cavity. The valve core assembly comprises a connecting rod component and a valve core component 30. The connecting rod component is movably disposed within the valve cavity. The valve core component 30 is mounted on the connecting rod component and moves with the connecting rod component within the valve cavity to connect or block the first connecting hole 012 and the second connecting hole 013. The rotor component 40 is located at the end of the connecting rod component away from the valve core component 30 and is rotatably disposed within the valve cavity. One end of the connector 50 is fixedly mounted on the rotor component 40, while the other end of the connector 50 is threadedly engaged with the connecting rod component to drive the connecting rod component to move within the valve cavity. The connector 50 is positioned relative to the valve body 01 along the axial direction of the valve cavity.

[0039] By applying the technical solution of the present application, the connecting member 50 is limited relative to the valve body 01 in the axial direction of the valve cavity, that is, the connecting member 50 does not move relative to the valve body 01 in the axial direction of the valve cavity, and the rotor component 40 rotates to drive the connecting member 50 to rotate. The connecting member 50 drives the connecting rod component to move along the axial direction of the valve cavity while rotating. During the movement of the connecting rod component, the valve core component 30 is driven to move along the axial direction of the valve cavity, so that the valve core component 30 connects or blocks the first connecting hole 012 and the second connecting hole 013. In the traditional technical solution, it is necessary to introduce a high-pressure medium into one side of the piston component and form a pressure difference on both sides of the piston component to drive the valve core assembly to move. However, the structural design of the piston component is relatively complicated, and the driving method of driving the valve core assembly to move by forming a pressure difference is not convenient. Compared with the traditional technical solution, the setting of this solution drives the connecting rod component to move the valve core component 30 along the axial direction of the valve cavity through the rotor component 40 and the connecting component 50, thereby realizing the connection or isolation of the first connecting hole 012 and the second connecting hole 013. Its structure is relatively simple and the operation is more convenient.

[0040] Furthermore, the connecting rod assembly includes a connecting rod 10 and a guide frame 20, which are sequentially arranged along the direction from the rotor assembly 40 to the valve core assembly 30. The connecting rod 10 and the guide frame 20 are fixedly connected. The connecting rod 10 is threadedly engaged with the connector 50, and the valve core assembly 30 is mounted on the guide frame 20. This solution does not limit the specific connection method between the connecting rod 10 and the guide frame 20, and the fixed connection can be achieved through fasteners, clamping, welding, etc.

[0041] In the connecting rod assembly of this embodiment, the first end of the connecting rod 10 is injection molded onto the guide frame 20. This arrangement can reduce the possibility of loosening of the connection between the connecting rod 10 and the guide frame 20, improve the stability of the connection between the connecting rod 10 and the guide frame 20, and enhance the stability of the valve core assembly 30 during movement. If the connecting rod is connected to the guide frame by fasteners, the fasteners are prone to loosening after long-term use, affecting the stability of the connection between the connecting rod and the guide frame. The arrangement of this embodiment can improve the stability of the connection between the connecting rod 10 and the guide frame 20, and the fact that the connecting rod 10 is injection molded onto the guide frame 20 makes it more convenient to assemble.

[0042] As shown in Figures 3 and 4 , the guide frame 20 is a plate-like structure. The length of the guide frame 20 is the same as the length of the connecting rod 10, and the width of the guide frame 20 is perpendicular to the length of the connecting rod 10. In Figure 3 , the Z direction is the length 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.

[0043] As shown in Figures 3 to 5, in this embodiment, a mounting groove 101 is provided on the end surface of the first end of the connecting rod 10. One end of the guide frame 20 is inserted into the mounting groove 101 and connected to the connecting rod 10. This arrangement can increase the contact area between the connecting rod 10 and the guide frame 20, further improving the stability of the connection between the connecting rod 10 and the guide frame 20.

[0044] Furthermore, a snap-fit ​​structure is provided between the connecting rod 10 and the guide frame 20, and the connecting rod 10 and the guide frame 20 are engaged with each other through the snap-fit ​​structure. The provision of the snap-fit ​​structure can further reduce the possibility of separation of the connecting rod 10 and the guide frame 20, and further increase the stability of the connection between the connecting rod 10 and the guide frame 20.

[0045] This solution does not limit the specific form of the clamping structure.

[0046] In the embodiment of this solution, the snap-fit ​​structure includes a snap-fitting snap-fitting hole 202 and a snap-fitting portion 102 that snap-fit ​​together. The shape of the snap-fitting portion 102 matches the shape of the snap-fitting hole 202. The snap-fitting hole 202 is provided on one end of the guide frame 20 that extends through the mounting slot 101. The snap-fitting portion 102 is disposed within the mounting slot 101 and is integrally formed with the connecting rod 10. The snap-fitting portion 102 extends through the snap-fitting hole 202 and snap-fits therewith.

[0047] In other embodiments of the present scheme, the snap-fitting hole 202 is arranged on the side wall of the mounting groove 101, the snap-fitting portion 102 is arranged on the side wall of one end of the guide frame 20 passing through the mounting groove 101, the snap-fitting portion 102 and the guide frame 20 are integrally formed, and the snap-fitting portion 102 is snap-fitted with the snap-fitting hole 202.

[0048] The present solution does not limit the specific shape of the snap-in hole 202 , and the snap-in hole 202 may be a circular hole, a special-shaped hole, a polygonal hole or the like.

[0049] As shown in Figures 4, 7, and 8, in this embodiment, the engaging hole 202 is a waist-shaped hole. The length of the waist-shaped hole is aligned with the length of the connecting rod component. The dimension A of the waist-shaped hole along the length of the connecting rod component is greater than the dimension B of the waist-shaped hole along the width of the connecting rod component. This arrangement increases the tensile strength of the pull rod component. Furthermore, the dimension of the waist-shaped hole along the length of the connecting rod component is greater than the dimension along the width of the connecting rod component. This arrangement reduces the space occupied by the engaging hole 202 in the width direction of the guide frame 20.

[0050] Furthermore, the present solution does not impose any restriction on the specific number of the clamping structures. In the present embodiment, two groups of clamping structures are provided, and the two groups of clamping structures are spaced apart along the width direction of the guide frame 20 .

[0051] As shown in Figures 3 to 6, in this embodiment, the connecting rod 10 includes a connecting rod 11 and a connecting block 12 arranged sequentially along the length. The transverse cross-sectional area of ​​the connecting block 12 is larger than that of the connecting rod 11. The mounting groove 101 is provided on the end surface of the connecting block 12 away from the connecting rod 11. This arrangement 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.

[0052] As shown in Figures 3 to 5 , the ends of the mounting groove 101 extend along the width of the connecting rod component to the two end surfaces of the connecting block 12. The guide frame 20 includes a first plate 21 and a second plate 22 arranged sequentially along its length. The width of the first plate 21 is smaller than that of the second plate 22. A snap-fit ​​hole 202 is provided on the first plate 21. The first plate 21 extends through the mounting groove 101. Along the width of the guide frame 20, the ends of the first plate 21 are located outside the mounting groove 101. This arrangement improves the convenience of injection molding the connecting rod 10.

[0053] As shown in Figures 1 and 3, in this embodiment, the guide frame 20 is provided with an installation opening 201. The installation opening 201 is a circular hole and is provided through the guide frame 20 along a perpendicular direction to the extension direction of the connecting rod component. That is, in this embodiment, the installation opening 201 is provided through the guide frame 20 along the thickness direction of the guide frame 20. The installation opening 201 is used to install the valve core component 30. The provision of the installation opening 201 has a simple structure and facilitates the assembly of the valve core component 30.

[0054] In this embodiment, the first and second communication holes 012 and 013 respectively communicate with the side of the valve cavity. The valve core component 30 includes a first valve core 31, a second valve core 32, and an elastic portion 33. The first and second valve cores 31 and 32 abut against each other. The elastic portion 33 is disposed between the first and second valve cores 31 and 32, and provides a force to move the first and second valve cores 31 and 32 away from each other. This arrangement facilitates assembly of the valve core component 30 and ensures that the first and second valve cores 31 and 32 effectively seal the communication hole of the electric valve.

[0055] As shown in Figures 1 and 2, the electric valve further includes a valve cover 60, which is disposed within the valve cavity. The connecting rod 10 is guided and cooperates with the valve cover 60. The provision of the valve cover 60 can guide the movement of the connecting rod 10, reduce the possibility of shaking during the movement of the connecting rod 10, improve the smoothness of the movement of the connecting rod 10, improve the smoothness of the movement of the valve core component 30 driven by the connecting rod component, and improve the stability when opening and closing the valve.

[0056] In this embodiment, the valve cover 60 is provided with a through hole 601, which is provided along the axis of the valve cavity and penetrates the valve cover 60. The connecting rod 10 is movably provided in the through hole 601, and the connecting rod 10 is guided and engaged with the through hole 601. The provision of the through hole 601 has a simple structure and an excellent guiding effect.

[0057] In this embodiment, a first anti-rotation structure is provided on the side wall of the through hole 601, and a second anti-rotation structure is provided on the side wall of the connecting rod 10. The first anti-rotation structure and the second anti-rotation structure cooperate to prevent rotation. The provision of the first and second anti-rotation structures ensures that the connecting rod component can only move along the axis of the valve cavity, preventing the connecting rod component from rotating during movement and improving the stability of the connecting rod component during movement.

[0058] This solution does not limit the specific forms of the first anti-rotation structure and the second anti-rotation structure.

[0059] 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 through hole 601, the first anti-rotation surface 6010 is a plane, and the extension direction of the first anti-rotation surface 6010 is the same as the extension direction of the through hole 601; a second anti-rotation surface 1001 is provided on the side wall of the connecting rod 11, and the extension direction of the second anti-rotation surface 1001 is the same as the extension direction of the connecting rod 10, and the first anti-rotation surface 6010 and the second anti-rotation surface 1001 are anti-rotationally matched.

[0060] In this embodiment, the shape of the through-hole 601 matches the shape of the connecting rod 11. Specifically, the cross-sectional outer contour of the connecting rod 11 is polygonal, and the multiple outer sidewalls of the connecting rod 11 form multiple first anti-rotation surfaces. This arrangement provides a simple structure and facilitates the through-hole 601 in guiding and preventing the connecting rod 11 from rotating.

[0061] Furthermore, valve body 01 includes a first sleeve 014 and a second sleeve 015. The openings of first and second sleeves 014 and 015 are positioned opposite each other, forming a valve chamber between them. A valve cover 60 is an integral structure, positioned between first and second sleeves 014 and 015. One end of valve cover 60 passes through the opening of first sleeve 014 and is connected to it, while the other end of valve cover 60 passes through the opening of second sleeve 015 and is connected to it. Valve cover 60 divides the valve chamber into a first chamber 0111 and a second chamber 0112, distributed along the axial direction.

[0062] In this embodiment, a first stepped structure and a second stepped structure are spaced apart on the outer wall of the valve cover 60 along the axial direction of the valve cover 60. The first stepped structure is engaged with the end surface of the open end of the first sleeve 014, and the second stepped structure is engaged with the end surface of the open end of the second sleeve 015. This arrangement improves the assembly accuracy between the first sleeve 014 and the valve cover 60, and improves the assembly accuracy between the second sleeve 015 and the valve cover 60.

[0063] Specifically, the rotor component 40 is located within the first chamber 0111, and the valve core component 30 is located within the second chamber 0112. In this embodiment, the rotor component 40 is located within the first sleeve 014, and the valve core component 30 is located within the second sleeve 015. This arrangement simplifies the structure and minimizes the number of components in the electric valve, making assembly more convenient.

[0064] Furthermore, a first balancing channel is formed between the connecting rod 10 and the through-hole 601, with both ends of the first balancing channel communicating with the first chamber 0111 and the second chamber 0112, respectively. The provision of the first balancing channel prevents the rotor component 40 from suffocating in the first chamber 0111 and causing a pressure difference, thereby improving the rotational flexibility of the rotor component 40.

[0065] This solution does not limit the specific formation method of the first balancing channel.

[0066] As shown in Figures 1, 9 and 10, in an embodiment of the present scheme, a groove structure 6013 is provided on the side wall of the through hole 601, and 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 through hole 601. One end of the groove structure 6013 is connected to the first chamber 0111, and the other end is connected to the second chamber 0112. The groove structure 6013 forms a first balance channel.

[0067] In other embodiments of the present scheme, a guide groove is provided on the side wall of the connecting rod 11, and the guide groove is provided corresponding to the second anti-rotation surface 1001. The extension direction of the guide groove is the same as the extension direction of the connecting rod 11. One end of the guide groove is connected to the first chamber 0111, and the other end is connected to the second chamber 0112. The guide groove forms a first balancing channel.

[0068] As shown in Figures 11 and 12 , in other embodiments of this solution, the valve cover 60 is further provided with a second balancing channel 602. This second balancing channel 602 is eccentrically disposed relative to the through-hole 601, with its ends communicating with the first chamber 0111 and the second chamber 0112, respectively. The provision of the second balancing channel 602 prevents the rotor component 40 from suffocating in the first chamber 0111 and generating a pressure differential, thereby enhancing the rotational flexibility of the rotor component 40. This arrangement also facilitates the processing and forming of the second balancing channel 602.

[0069] As shown in Figures 1 and 2, in this embodiment, the through hole 601 includes a guide hole 6011 and an avoidance hole 6012 that are sequentially connected along the direction from the connecting rod 10 to the connecting member 50. The aperture size of the guide hole 6011 is smaller than the aperture size of the avoidance hole 6012. The guide hole 6011 is guided and matched with the connecting rod 10, and the end of the connecting member 50 away from the rotor component 40 passes through the avoidance hole 6012 and is threadedly matched with the connecting rod 10.

[0070] Furthermore, the electric valve includes a bearing 70 disposed within the avoidance hole 6012. The connector 50 is rotatably disposed within the bearing 70, with the outer circumference of the connector 50 connected to the inner ring of the bearing 70. The provision of the bearing 70 secures the connector 50, reduces the possibility of shaking of the connector 50, and improves the stability of the connector 50 during rotation. Furthermore, it reduces rotational friction of the connector 50, thereby improving transmission efficiency.

[0071] Specifically, the valve cover 60 comprises a first section and a second section connected along the axial direction. The diameter of the first section is smaller than that of the second section. The first section is inserted into the first sleeve 014, and the end of the first section remote from the second section is inserted into the rotor component 40. The open end of the first sleeve 014 is inserted into the end of the second section connected to the first section, and the open end of the second sleeve 015 is inserted into the end of the second section remote from the first section. This arrangement further reduces the number of components in the electric valve and improves the structural compactness of the electric valve.

[0072] As shown in Figures 1 and 2, in this embodiment, a limiting portion 501 is provided on the connecting member 50, and the electric valve further includes an elastic component 80. The elastic component 80 is provided on the connecting member 50, and the bearing 70 is located between the elastic component 80 and the limiting portion 501. The elastic component 80 and the limiting portion 501 are respectively in contact with the bearing 70. The elastic component 80, the bearing 70, and the limiting portion 501 are sequentially distributed along the direction from the connecting member 50 to the connecting rod 10. The elastic component 80 is used to apply an elastic force to the connecting member 50 so that the limiting portion 501 on the connecting member 50 contacts the bearing 70. In this arrangement, the elastic component 80 is used to apply a force to the bearing 70 so that the bearing 70 always abuts against the limiting portion 501, eliminating the gap between the bearing 70 and the limiting portion 501, so that the connecting member 50 is constrained in the axial direction, that is, the connecting member 50 only has a degree of freedom in the rotation direction, reducing or avoiding the possibility of the connecting member 50 moving in the axial direction.

[0073] Specifically, the elastic component 80 includes a spring and a retaining spring component that are connected to each other. The spring is sleeved on the connecting piece 50, and one end of the spring abuts against the end face of the bearing 70 away from the connecting rod 10. The retaining spring component is arranged at the end of the spring away from the bearing 70. The retaining spring component is clamped with the connecting piece 50, and the retaining spring component abuts against the end of the spring away from the bearing 70.

[0074] Furthermore, the first communication hole 012 and the second communication hole 013 are respectively connected to the side of the second chamber 0112. The electric valve also includes a valve seat 90, which is disposed in the second chamber 0112 and is guided and engaged with the valve core component 30. The provision of the valve seat 90 can guide the movement of the valve core component 30, further improving the stability of the valve core component 30.

[0075] In this embodiment, valve seat 90 is disposed within second chamber 0112 and includes a first seat body and a second seat body. The first seat body and the second seat body are respectively disposed corresponding to first communication hole 012 and second communication hole 013. 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 respectively connected to first communication hole 012 and second communication hole 013. A guide space is formed between the first seat body and the second seat body. The valve core component 30 is movably disposed within the guide space and cooperates with the guide space.

[0076] Furthermore, the connecting rod component is limitedly matched with the valve cover 60 to limit the displacement stroke of the connecting rod component in the axial direction of the valve cavity.

[0077] As shown in Figures 1 to 3 , the stepped surface between the connecting rod 11 and the connecting block 12 forms a first limiting structure 103. The first limiting structure 103 is configured to abut against the end surface of the valve cover 60 near the valve core component 30 to limit the displacement of the connecting rod component in the axial direction of the valve cavity. This arrangement provides a simple structure and eliminates the need for additional limiting structures.

[0078] Furthermore, along the axis of the valve cavity, the end of the guide frame 20 away from the connecting rod 10 protrudes beyond the valve core component 30. The end surface of the guide frame 20 away from the connecting rod 10 forms a second limiting structure 203, which is configured to engage with the end of the valve cavity away from the rotor component 40. This arrangement prevents the end surface of the valve core component 30 from contacting the end of the valve cavity away from the rotor component 40, thereby preventing the valve core component 30 from being squeezed and deformed.

[0079] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0080] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0081] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0082] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0083] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0084] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. An electric valve, characterized in that, Comprising: A valve body (01) provided with a valve cavity, a first communication hole (012) and a second communication hole (013), the first communication hole (012) and the second communication hole (013) are respectively communicated with the valve cavity; A valve core assembly, including a connecting rod component and a valve core component (30), the connecting rod component is movably arranged in the valve cavity; the valve core component (30) is installed on the connecting rod component, and the valve core component (30) moves in the valve cavity along with the connecting rod component to connect or cut off the first communication hole (012) and the second communication hole (013); A rotor component (40), located at one end of the connecting rod component away from the valve core component (30), the rotor component (40) is rotatably arranged in the valve cavity; A connecting piece (50), one end of the connecting piece (50) is fixedly arranged on the rotor component (40), and the other end of the connecting piece (50) is in threaded cooperation with the connecting rod component to drive the connecting rod component to move along the axis direction of the valve cavity in the valve cavity, and the connecting piece (50) is limited in the axis direction of the valve cavity relative to the valve body (01).

2. The electric valve according to claim 1, characterized in that, The connecting rod component includes a connecting rod (10) and a guide frame (20) arranged in sequence along the direction from the rotor component (40) to the valve core component (30), the connecting rod (10) and the guide frame (20) are fixedly connected, the connecting rod (10) is in threaded cooperation with the connecting piece (50), and the valve core component (30) is installed on the guide frame (20).

3. The electric valve according to claim 2, characterized in that, The electric valve further includes: A valve cover (60), arranged in the valve cavity, and the connecting rod (10) is in guiding cooperation with the valve cover (60).

4. The electric valve according to claim 3, wherein The valve cover (60) is provided with a through hole (601), the through hole (601) is arranged through the valve cover (60) along the axis direction of the valve cavity, the connecting rod (10) is movably arranged in the through hole (601), and the connecting rod (10) is in guiding cooperation with the through hole (601).

5. The electric valve according to claim 4, wherein A first anti-rotation structure is arranged on the side wall of the through hole (601), and a second anti-rotation structure is arranged on the side wall of the connecting rod (10), and the first anti-rotation structure and the second anti-rotation structure are in anti-rotation cooperation.

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

7. The electric valve according to claim 6, wherein A first balance channel is formed between the connecting rod (10) and the through hole (601), and both ends of the first balance channel are respectively communicated with the first chamber (0111) and the second chamber (0112); and / or, A second balance passage (602) is provided on the valve cover (60). The second balance passage (602) is eccentrically arranged with respect to the through hole (601). Two ends of the second balance passage (602) are respectively communicated with the first chamber (0111) and the second chamber (0112).

8. The electric valve according to claim 4, characterized in that, The through hole (601) includes a guiding hole (6011) and an avoidance hole (6012) that are sequentially communicated in the direction from the connecting rod (10) to the connecting member (50). The aperture size of the guiding hole (6011) is smaller than that of the avoidance hole (6012). The guiding hole (6011) is in guiding fit with the connecting rod (10). One end of the connecting member (50) away from the rotor component (40) passes through the avoidance hole (6012) and extends into the guiding hole (6011) and is in threaded fit with the connecting rod (10).

9. The electric valve according to claim 8, characterized in that, The electric valve further includes: A bearing (70) is arranged in the avoidance hole (6012). The connecting member (50) is rotatably arranged in the bearing (70). The outer peripheral surface of the connecting member (50) is connected to the inner ring of the bearing (70).

10. The electric valve according to claim 9, wherein, A limiting portion (501) is provided on the connecting member (50). The electric valve further includes: An elastic member (80) is arranged 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) are respectively abutted against the bearing (70). The elastic member (80) is used to apply an elastic force to the connecting member (50) so that the limiting portion (501) on the connecting member (50) abuts against the bearing (70).

11. The electric valve according to claim 1, characterized in that, The electric valve further includes: A valve seat (90) is arranged in the valve cavity. The valve seat (90) is in guiding fit with the valve core component (30).

12. The electric valve according to claim 2, characterized in that, An installation opening (201) is provided on the guiding frame (20). The valve core component (30) includes an independent first valve core (31) and a second valve core (32). The first valve core (31) and the second valve core (32) are respectively installed in the installation opening (201). The first valve core (31) and the second valve core (32) are abutted against each other. The first valve core (31) is correspondingly arranged with the first communication hole (012). The second valve core (32) is correspondingly arranged with the second communication hole (013).

13. The electric valve according to claim 3, characterized in that, The connecting rod component is in limiting fit with the valve cover (60) to limit the displacement stroke of the connecting rod component in the axial direction of the valve cavity.

14. The electric valve according to claim 13, characterized in that, A stepped surface is provided on the side wall of the connecting rod component. The stepped surface is used for limiting fit with the valve cover (60).

15. The electric valve according to claim 2, characterized in that, The first communication hole (012) and the second communication hole (013) are respectively communicated with the side part of the valve cavity. Along the axial direction of the valve cavity, one end of the guiding frame (20) away from the connecting rod (10) protrudes from the valve core component (30). One end of the guiding frame (20) away from the connecting rod (10) is used for limiting fit with one end of the valve cavity away from the rotor component (40).

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

17. The electric valve according to claim 16, wherein, An installation 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 installation groove (101) and connected to the connecting rod (10).

18. The electric valve according to claim 17, wherein, A clamping structure is provided between the connecting rod (10) and the guide frame (20), and the connecting rod (10) and the guide frame (20) are clamped and matched through the clamping structure.

19. The electric valve according to claim 18, wherein, The clamping structure includes: A clamping hole (202) provided at one end of the guide frame (20) inserted into the installation groove (101); A clamping portion (102) provided in the installation groove (101) and integrally formed with the connecting rod (10), and the clamping portion (102) is inserted into the clamping hole (202) and clamped with the clamping hole (202).

20. The electric valve according to claim 19, characterized in that, The dimension of the clamping hole (202) in the length direction of the connecting rod component is larger than the dimension in the width direction of the connecting rod component.

21. The electric valve according to claim 17, characterized in that, The connecting rod (10) includes a connecting rod (11) and a connecting block (12) sequentially arranged along the length direction, the cross-sectional area of the connecting block (12) is larger than the cross-sectional area of the connecting rod (11), and the installation groove (101) is provided on the end face of the end of the connecting block (12) away from the connecting rod (11).

22. The electric valve according to claim 16, wherein, A threaded 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 component (40) is inserted into the threaded hole and threadedly engaged with the connecting rod (10).

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