Electric valve

Abstract

The utility model discloses an electrically operated valve which comprises a driving part, a valve body and a valve block, the electrically operated valve is provided with a valve cavity, the valve block is arranged in the valve cavity, the driving part can drive the valve block to act, the electrically operated valve comprises a valve seat, the valve seat and the valve body are integrally arranged or relatively fixed or arranged in a limiting mode, and the valve seat is arranged in the valve cavity. The valve seat is relatively positioned at the bottom of the valve cavity; the valve block is of a disc structure and comprises an independent disc portion matched with the valve seat for rotary sealing and a piston portion provided with a first groove and a second groove, the first groove and the second groove are isolated in the piston portion, and the end face, close to the valve seat, of the piston portion is matched with the end face, away from the valve seat, of the disc portion. The disc part and the piston part are fixedly connected into a whole through a pin, deformation of the disc part is prevented, and therefore the sealing performance between the disc part and the valve seat is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of automobile air conditioners, in particular to an electric valve. Background Art

[0002] Prior art, such as utility model application 202320882635.3, discloses an electric valve, including a driving component, a valve body and a valve block, the electric valve is provided with a valve cavity, the valve block is arranged in the valve cavity, the driving component can drive the valve block to move, and is characterized in that the electric valve includes a valve seat which is integral with the valve body or relatively fixed or limited, the valve seat is relatively located at the bottom of the valve cavity, the valve seat is provided with a first through hole, a second through hole, a third through hole, a fourth through hole and a fifth through hole, the electric valve is provided with a first interface, a second interface, a third interface, a fourth interface and a fifth interface, the first interface, the second interface, the third interface, the fourth interface and the fifth interface are respectively connected to the first through hole, the second through hole, the third through hole, the fourth through hole and the fifth through hole. The fifth through hole is connected; the valve block can move relative to the valve seat, and the valve block slides with the valve seat on a side facing the valve seat, and the valve block is provided with a first groove and a second groove on a side opposite to the valve seat. By rotating the valve block, the fourth interface is connected to the fifth interface when the second interface and the third interface are connected, and the third interface is connected to the fourth interface when the first interface and the second interface are connected; wherein, when the first groove is controlled by the valve block to connect the second through hole with the third through hole, the second groove connects the fourth through hole with the fifth through hole, and when the first groove is controlled by the valve block to connect the first through hole with the second through hole, the second groove connects the third through hole with the fourth through hole. The valve block is a disc structure, and the valve block is divided into an independent disc part that cooperates with the valve seat for rotational sealing and a circulation part with the first groove and the second groove inside. The valve block is provided with a first blind hole, a second blind hole, a third blind hole, and a fourth blind hole on the disc part on the side opposite to the valve seat. The first blind hole and the second blind hole are connected to the first groove, and the third blind hole and the fourth blind hole are connected to the second groove. The blind hole does not penetrate the flow part, but only the disc part. The disc part and the flow part are fixed and sealed by welding. When the disc part and the flow part are fixed by welding, the disc part is prone to welding deformation, resulting in poor sealing performance between the disc part and the valve seat. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provide an electric valve.

[0004] The technical solution of the utility model is: an electric valve, including a driving component, a valve body and a valve block, the electric valve is provided with a valve cavity, the valve block is arranged in the valve cavity, the driving component can drive the valve block to move, the electric valve includes a valve seat that is integral with the valve body or relatively fixed or limited, the valve seat is relatively located at the bottom of the valve cavity, the valve seat is provided with a first through hole, a second through hole, a third through hole, a fourth through hole and a fifth through hole, the electric valve is provided with a first interface, a second interface, a third interface, a fourth interface and a fifth interface, the first interface, the second interface, the third interface, the fourth interface and the fifth interface are respectively connected with the first through hole, the second through hole, the third through hole, the fourth through hole and the fifth through hole; the valve block can move relative to the valve seat, and the valve block slides with the valve seat on a side facing the valve seat, the valve block is provided with a first groove and a second groove on a side opposite to the valve seat, and the fourth interface and the fifth interface are controlled by the rotation of the valve block when the second interface and the third interface are connected. The valve block is characterized in that the valve block is in a disc structure, the valve block includes an independent disc portion for rotating and sealing with a valve seat and a piston portion having a first groove and a second groove, the first groove and the second groove are isolated from each other in the piston portion, the end surface of the piston portion close to the valve seat is matched with the end surface of the disc portion away from the valve seat, and the disc portion and the piston portion are fixedly connected as a whole by a pin; the valve block is provided with a first blind hole, a second blind hole, a third blind hole and a fourth blind hole on the disc portion on the side opposite to the valve seat, the first blind hole and the second blind hole are connected to the first groove, and the third blind hole and the fourth blind hole are connected to the second groove.

[0005] Furthermore, the end surface of the piston portion close to the valve seat is disc-shaped.

[0006] Furthermore, a sealing ring surrounding the first groove or the second groove is arranged between the end surface of the piston portion close to the valve seat and the end surface of the disc portion away from the valve seat.

[0007] Furthermore, the end surface of the piston portion away from the valve seat is provided with a convex hump which is substantially flush with the outer end surfaces of the top walls of the first groove and the second groove.

[0008] Furthermore, a rotation axis is arranged at the center of the end surface of the piston portion away from the valve seat.

[0009] Furthermore, the electric valve also includes a shaft for driving the valve block to rotate, and the shaft cooperates with the rotating shaft.

[0010] Furthermore, the electric valve also includes a gasket and a spring. The gasket is located in the valve cavity. Along the axial direction of the gasket, the gasket is located between the top of the valve cavity and the valve block. The lower end of the gasket abuts against the upper end of the spring, and the lower end of the spring abuts against the piston part. The outer walls of the first groove and the second groove of the piston part close to the rotation center are in an arc shape to avoid the spring.

[0011] Furthermore, the electric valve comprises a central axis, the piston portion comprises a central blind hole, and the central axis passes through the disc portion and cooperates with the central blind hole.

[0012] Furthermore, the electric valve further comprises a driving head, the driving head comprises a radial limiting column, a limiting groove is arranged at the top end of the valve body, and the limiting column cooperates with the limiting groove for limiting.

[0013] Furthermore, the electric valve comprises a bracket with screw holes arranged on the side surface and the upper end surface, the driving component is fixedly connected to the upper end of the bracket by screws, and the bracket is fixedly connected to the valve body by screws.

[0014] The electric valve of the utility model comprises a driving component, a valve body and a valve block, the electric valve is provided with a valve cavity, the valve block is arranged in the valve cavity, the driving component can drive the valve block to move, the electric valve comprises a valve seat which is integral with the valve body or relatively fixed or limitedly arranged, and the valve seat is relatively located at the bottom of the valve cavity; the valve block is in a disc structure, the valve block comprises an independent disc part which cooperates with the valve seat for rotational sealing and a piston part having a first groove and a second groove, the first groove and the second groove are isolated from each other in the piston part, the end face of the piston part close to the valve seat cooperates with the end face of the disc part away from the valve seat, the disc part and the piston part are fixedly connected as a whole by a pin to prevent the disc part from deformation, thereby ensuring the sealing performance between the disc part and the valve seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic cross-sectional view of an embodiment of the electric valve of the utility model;

[0016] Figure 2 This utility model Figure 1 Schematic diagram of the exploded structure of the drive components and bracket;

[0017] Figure 3 This utility model Figure 1 Schematic diagram of the structure viewed from above;

[0018] Figure 4 This utility model Figure 1 Schematic diagram of the structure from top view;

[0019] Figure 5 This utility model Figure 1 Schematic diagram of the valve seat and valve block exploded structure;

[0020] Figure 6 This utility model Figure 1 Schematic diagram of the exploded structure of the valve body and shaft seal assembly. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0022] See also Figures 1 to 6 As shown, this embodiment discloses an electric valve, which can be applied to a refrigerant circuit such as an automobile air conditioning system. The electric valve includes a valve body 1 and a driving component 4. The valve body 1 includes a valve cavity with an opening at one end, and a valve seat 2 and a valve block 3 are arranged in the valve cavity. A shaft seal assembly 6 is installed at the other end of the valve cavity. The driving component 4 drives the driving head 5 to rotate, the driving head 5 drives the shaft 7 to rotate, and the shaft 7 drives the valve block 3 to rotate. The rotation center of the output end of the driving component 4 and the rotation center of the valve block 3 are located on the same axis. The valve seat 2 is relatively located at the bottom of the valve cavity. The open end of the valve cavity of the valve body 1 is connected to the valve seat by screws, and can also be fixed by welding or the like, or a valve seat integrated with the valve body can be used. The driving component is a motor, and the motor can directly drive the valve block to move. Among them, the electric valve includes a plastic bracket 10 with screw holes arranged on the side and the upper end surface. The driving component 4 is fixedly connected to the upper end of the bracket 10 by screws, and the bracket 10 is fixedly connected to the valve body 1 by screws. The driving component is installed by the bracket transfer, and the radial installation size of the upper end of the valve body is reduced. In this embodiment, the driving head 5 includes a radial limiting column 51, and a limiting groove 101 is arranged at the top of the valve body. The limiting column cooperates with the limiting groove to limit the rotation angle of the valve block.

[0023] The valve seat is provided with a first through hole 201, a second through hole 202, a third through hole 203, a fourth through hole 204 and a fifth through hole 205, and the electric valve is provided with a first interface 01, a second interface 02, a third interface 03, a fourth interface 04 and a fifth interface 05, and the first interface, the second interface, the third interface, the fourth interface and the fifth interface are respectively connected with the first through hole, the second through hole, the third through hole, the fourth through hole and the fifth through hole. The distance between the center of the first through hole, the second through hole, the third through hole, the fourth through hole and the fifth through hole and the rotation center of the valve seat is the same, and the first through hole, the second through hole, the third through hole, the fourth through hole and the fifth through hole are evenly distributed along the circumference with the rotation center of the valve seat as the center. The valve block 3 can rotate relative to the valve seat, and the valve block is slidably matched with the valve seat on the side facing the valve seat, and the valve block 3 is provided with a first groove 301 and a second groove 302 on the side opposite to the valve seat 2.

[0024] When in use, the valve block is rotated to control the fourth interface 04 to be connected with the fifth interface 05 when the second interface 02 and the third interface 03 are connected, and the third interface 03 to be connected with the fourth interface 04 when the first interface 01 and the second interface 02 are connected. When the valve block is rotated to control the first groove 301 to connect the second through hole 202 with the third through hole 203, the second groove 302 connects the fourth through hole 204 with the fifth through hole 205, and the valve block 3 closes the first through hole 201 and cuts off the first interface. When the valve block is rotated to control the first groove 301 to connect the first through hole 201 with the second through hole 202, the second groove 302 connects the third through hole 203 with the fourth through hole 204, and the valve block 3 closes the fifth through hole 205 and cuts off the fifth interface. The valve block can rotate counterclockwise or clockwise, and can continuously rotate to switch adjacent through holes. Multiple grooves and five interfaces are used to achieve more switching functions, and one of the interfaces can also be closed at the same time.

[0025] Combination Figure 1 and Figure 5As shown, the valve block 3 is a disc structure, and the valve block includes an independent disc part 31 for rotating seal with the valve seat and a piston part 32 with a first groove 301 and a second groove 302. The first groove and the second groove are isolated from each other in the piston part. The end face of the piston part close to the valve seat is disc-shaped, and the end face of the piston part close to the valve seat fits with the end face of the disc part 31 away from the valve seat. A sealing ring surrounding the first groove or the second groove is arranged between the end face of the piston part close to the valve seat and the end face of the disc part away from the valve seat. The disc part and the piston part are fixedly connected as a whole by three pins. The piston part is generally made of PPS injection molding, and the disc part is processed with stainless steel. The first groove and the second groove are isolated from each other in the piston part, and a single piston part includes two grooves, which is easier to assemble. The end face of the piston part away from the valve seat is provided with a convex bump 303 that is roughly flush with the outer end face of the top wall of the first groove and the second groove, which occupies the valve cavity space and reduces the filling of the system refrigerant medium. The valve block is provided with a first blind hole 311, a second blind hole 312, a third blind hole 313, and a fourth blind hole 314 on the disc portion on the side opposite to the valve seat. The first blind hole and the second blind hole are connected to the first groove 301, and the third blind hole and the fourth blind hole are connected to the second groove 302. It should be noted that the blind hole specifically refers to a hole that does not penetrate the piston portion but only penetrates the disc portion. The first through hole, the second through hole, the third through hole, the fourth through hole, and the fifth through hole are provided with a sealing seat 206. The valve seat through hole is a step hole. The sealing seat 206 includes an inner step surface, and a metal bushing 208 is installed. Along the axial direction of the step hole, the sealing ring 207 is located on the bottom wall of the step hole. For through holes with low sealing requirements, a sealing seat may not be used. In the figure, four through holes are provided with sealing seats, and the sealing seats are made of rubber or plastic. There is an isolation between the first blind hole and the second blind hole on the disc portion on the side opposite to the valve seat, and there is also an isolation between the third blind hole and the fourth blind hole on the disc portion on the side opposite to the valve seat, so that the blind hole diameter matches the through hole diameter to ensure good sealing and flow capacity.

[0026] In this embodiment, the electric valve is also provided with a plurality of gaskets 8 and springs 9. The gasket is located in the valve cavity. Along the axial direction of the gasket 8, the gasket 8 is located between the top of the valve cavity and the valve block 3, and is sleeved on the outside of the shaft 7. The lower end of the gasket abuts against the upper end of the spring, and the lower end of the spring abuts against the piston part. The outer wall of the first groove and the second groove of the piston part near the rotation center is in an arc shape to avoid the spring, so that the valve block is very compact. The spring applies a certain preload force to the valve block to ensure the sealing performance. The valve block is a disc structure as a whole, which is conducive to the balance of the spring pressure and does not cause partial sealing failure due to skewed pressure. The shaft seal assembly 6 includes a compression sleeve 61, a U-shaped sealing ring 62 and a rubber O-shaped sealing ring 63, and the sealing of the rotating shaft is achieved by the compression sleeve. A rotating shaft 321 is set at the center of the end face of the piston part away from the valve seat, an open groove 3211 is set at the top of the rotating shaft, and a flat pin is set at the end of the shaft 7 to cooperate with the rotating shaft open groove to drive each other. In addition, the electric valve includes a central shaft 12, the piston part includes a central blind hole 322, the central shaft passes through the disc part and cooperates with the central blind hole, the central shaft cooperates with the hole at the rotation center of the valve seat for guidance, the central shaft can be a hollow shaft, and a sleeve is set at the rotation center of the valve seat to reduce friction.

[0027] In the description of the present invention, it should be understood that the terms "center", "surface", "surroundings", "top", "bottom", "up", "down", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric valve, comprising a driving component, a valve body and a valve block, wherein the electric valve is provided with a valve cavity, the valve block is provided in the valve cavity, the driving component can drive the valve block to move, the electric valve comprises a valve seat which is integral with the valve body or relatively fixed or limited, the valve seat is relatively located at the bottom of the valve cavity, the valve seat is provided with a first through hole, a second through hole, a third through hole, a fourth through hole and a fifth through hole, the electric valve is provided with a first interface, a second interface, a third interface, a fourth interface and a fifth interface, the first interface, the second interface, the third interface, the fourth interface and the fifth interface are respectively connected with the first through hole, the second through hole, the third through hole, the fourth through hole and the fifth through hole; the valve block can move relative to the valve seat, and the valve block is slidably matched with the valve seat on a side facing the valve seat, the valve block is provided with a first groove and a second groove on a side opposite to the valve seat, and the fourth interface is connected with the fifth interface when the second interface and the third interface are connected by rotating the valve block, and the third interface is connected with the fourth interface when the first interface and the second interface are connected; wherein, When the valve block is rotated to control the first groove so that the second through hole is connected to the third through hole, the second groove connects the fourth through hole to the fifth through hole, and when the valve block is rotated to control the first groove so that the first through hole is connected to the second through hole, the second groove connects the third through hole to the fourth through hole; characterized in that the valve block is a disc structure, the valve block includes an independent disc part that cooperates with the valve seat for rotational sealing and a piston part having a first groove and a second groove, the first groove and the second groove are isolated from each other in the piston part, the end surface of the piston part close to the valve seat cooperates with the end surface of the disc part away from the valve seat, and the disc part and the piston part are fixedly connected as a whole by a pin; the valve block is provided with a first blind hole, a second blind hole, a third blind hole and a fourth blind hole on the disc part on the side opposite to the valve seat, the first blind hole and the second blind hole are connected to the first groove, and the third blind hole and the fourth blind hole are connected to the second groove.

2. The electric valve according to claim 1, characterized in that: The end surface of the piston portion close to the valve seat is disc-shaped.

3. The electric valve according to claim 1, characterized in that: A sealing ring surrounding the first groove or the second groove is arranged between the end surface of the piston portion close to the valve seat and the end surface of the disc portion away from the valve seat.

4. The electric valve according to claim 1, characterized in that: The end surface of the piston part away from the valve seat is provided with a convex hump which is substantially flush with the outer end surfaces of the top walls of the first groove and the second groove.

5. The electric valve according to claim 1, characterized in that: A rotation axis is arranged at the center of the end surface of the piston part away from the valve seat.

6. The electric valve according to claim 5, characterized in that: The electric valve further comprises a shaft for driving the valve block to rotate, and the shaft cooperates with the rotating shaft.

7. The electric valve according to claim 6, characterized in that: The electric valve also includes a gasket and a spring. The gasket is located in the valve cavity. Along the axial direction of the gasket, the gasket is located between the top of the valve cavity and the valve block. The lower end of the gasket abuts against the upper end of the spring, and the lower end of the spring abuts against the piston part. The outer walls of the first groove and the second groove of the piston part close to the rotation center are in an arc shape to avoid the spring.

8. The electric valve according to claim 1, characterized in that: The electric valve comprises a central shaft, the piston portion comprises a central blind hole, and the central shaft penetrates through the disc portion and cooperates with the central blind hole.

9. The electric valve according to claim 1, characterized in that: The electric valve further comprises a driving head, the driving head comprises a radial limiting column, a limiting groove is arranged at the top end of the valve body, and the limiting column cooperates with the limiting groove for limiting.

10. The electric valve according to claim 1, characterized in that: The electric valve comprises a bracket with screw holes arranged on the side and the upper end surface, the driving component is fixedly connected to the upper end of the bracket by screws, and the bracket is fixedly connected to the valve body by screws.

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