An electronic control valve for a compressor

Abstract

The present application discloses an electronic control valve for a compressor, which relates to the field of compressor accessories. It includes a valve body and a valve stem. A first chamber and a second chamber are formed in the valve body. Both ends of the valve stem are inserted into the first chamber and the second chamber respectively. A bellows is arranged in the first chamber, and the valve body abuts against the bellows. An electromagnetic coil is arranged in the second chamber, and a magnetic induction slider is arranged at one end of the valve stem away from the bellows. A PC hole and a PS hole are formed on the outer side of the valve body, and a valve hole for communicating the PC hole and the PS hole is formed in the valve body. The valve stem is coaxially arranged with the valve hole. A circulation ring groove is formed on the outer wall of the valve stem, and the circulation ring groove is used to provide a flowing space for circulation. A plurality of spiral guide bars are arranged on the outer wall of the circulation ring groove, and a plurality of spiral guide grooves are formed on the inner wall of the valve hole. The spiral guide grooves and the spiral guide bars have the same helix direction and the same pitch. A closing ring for closing the valve hole is arranged on the valve stem. The present application enables the electronic control valve to meet the flow rate of the fluid and ensures the overall strength of the valve stem.

Description

Technical Field

[0001] The present application relates to the field of compressor accessories, and more particularly to an electronic control valve for a compressor. Background Art

[0002] Currently, the electronic control valve can precisely control the refrigerant flow direction, and send the corresponding amount of refrigerant into the evaporator or directly return it to the compressor bypassing the evaporator as needed. At the same time, the electronic control valve can also monitor and protect the system, and automatically shut down the compressor in case of high load or failure to avoid damage.

[0003] In the prior art, an electronic control valve for a compressor includes a valve body, a valve stem, a pressure-sensitive bellows, and a solenoid. The solenoid includes a coil, a coil housing, a stationary iron core, and a moving iron core. An air inlet and an air outlet are provided on the valve body, and a valve hole that is inserted and matched with the valve stem is provided in the valve body. The gas sequentially passes through the air inlet, the valve hole, and the PS hole to achieve the purpose of gas flow. The valve hole is blocked by the valve stem to close the electronic control valve. A flow-through ring groove is provided on the side wall of the valve stem, and the position where the flow-through ring groove is provided is pulled between the air inlet and the PS hole, so that the fluid flowing through the valve hole can flow through the flow-through ring groove. The pressure-sensitive bellows moves the valve stem by sensing the suction pressure, thereby changing the flow area of the valve port to change the flow rate. The coil induces an induced magnetic field by controlling the current, magnetizes the stationary iron core and the moving iron core, and generates an electromagnetic force between the stationary iron core and the moving iron core. Since the stationary iron core is confined in the valve, the moving iron core drives the valve stem in the valve under the action of the electromagnetic force, achieving the electrical control of the opening and closing of the valve stem.

[0004] In view of the above prior art, the size of the electronic control valve is made according to the required equipment, and its external size is difficult to change, resulting in high limitations on the sizes of its internal components. During the flow of the fluid in the valve hole of the electronic control valve, the fluid only flows through the flow-through ring groove. Since one end of the valve stem needs to be connected to the solenoid and the other end needs to be connected to the induction bellows, the length of the valve stem is relatively long. When it is necessary to ensure the flow space of the fluid, the thickness of the flow-through ring groove needs to be enlarged, which will greatly reduce the cross-sectional area of the valve stem at the position of the flow-through ring groove, affecting the strength of the valve stem. When the thickness of the flow-through ring groove is reduced to ensure the strength of the valve stem, when the flow rate of the fluid is too large or suddenly increases during use, the electronic control valve cannot meet the flow rate of the fluid, and there is an urgent need for improvement. Summary of the Invention

[0005] In order to enable the electronic control valve to meet the flow rate of the fluid and ensure the overall strength of the valve stem, the present application provides an electronic control valve for a compressor.

[0006] A technical solution adopted by an electronic control valve of a compressor provided in this application is as follows: It includes a valve body and a valve stem. A first chamber and a second chamber are opened in the valve body. Both ends of the valve stem are inserted into the first chamber and the second chamber respectively. A bellows is arranged in the first chamber, and the valve body abuts against the bellows. An electromagnetic coil is arranged in the second chamber. A magnetic induction slider is arranged at one end of the valve stem away from the bellows. The electromagnetic coil is used to control the movement of the magnetic induction slider along the axis direction of the valve stem. PC holes and PS holes are opened on the outer side of the valve body. A valve hole for communicating the PC holes and the PS holes is opened in the valve body. The valve stem is coaxially arranged with the valve hole. A flow-through ring groove is opened on the outer wall of the valve stem. The flow-through ring groove is used to provide a flow-through space. A plurality of spiral guide bars are arranged on the outer wall of the flow-through ring groove. A plurality of spiral guide grooves are opened on the inner wall of the valve hole. The spiral guide grooves and the spiral guide bars have the same helix direction and the same pitch. A sealing ring for closing the valve hole is arranged on the valve stem.

[0007] By adopting the above technical solution, during use, the fluid sequentially passes through the PC holes, the flow-through ring groove and the PS holes, so that the fluid can flow normally. When the sealing ring is pulled to abut against the valve hole, the valve hole can be closed. When the fluid flows, through the cooperation of the spiral guide grooves and the spiral guide bars, not only can the fluid flow area of the flow-through ring groove be ensured to ensure the fluid flow rate, but also the overall strength of the valve stem can be enhanced under the action of the spiral guide bars to ensure the service life of the valve stem. Moreover, under the action of the spirally arranged spiral guide grooves and spiral guide bars, the fluid can be guided to change the turbulent flow phenomenon of the fluid entering the valve body, so that the fluid can flow more smoothly. And by adopting the spiral arrangement, the fluid can generate a spiral rotation during the flowing process, generating a flow vortex of the fluid, so that a certain suction force can be generated during the flowing process of the fluid, increasing the fluid flow rate, and thus the fluid flow rate can be increased per unit time, improving the fluid flow rate of the electronic control valve for transporting the fluid.

[0008] Preferably, spiral locking bars are arranged on the outer wall of the valve stem. The spiral locking bars are inserted and matched with the spiral guide grooves. A return torsion spring is arranged in the second chamber. Both ends of the return torsion spring are respectively fixed on the inner wall of the second chamber and the outer wall of the magnetic induction slider. The return torsion spring is used to drive the spiral locking bars to spin out of the spiral guide grooves.

[0009] By adopting the above technical solution, during use, when the valve stem slides in the valve hole, under the cooperation of the spiral locking bars and the spiral guide grooves, the valve stem can be screwed into the valve hole. On the one hand, the purpose of sealing the valve hole can be achieved, improving the sealing performance of the valve hole. On the other hand, when the pressure gas enters through the PC holes, the position of the valve stem can be restricted through the rotating spiral locking bars and spiral guide grooves, improving the stability of the valve stem for closing the valve hole. Under the action of the return torsion spring, the spiral locking bars can be pulled to disengage from the spiral guide grooves, improving the smoothness of pulling the valve stem.

[0010] Preferably, a sealing pressure ring is provided on one side of the closed loop close to the spiral locking bar, and a friction surface is provided on the side of the sealing pressure ring away from the closed loop.

[0011] By adopting the above technical solution, through the design of the sealing pressure ring, the closed loop can better seal the valve hole, improving the sealing effect of the electric control valve; and in cooperation with the friction surface abutting against the inner wall of the valve body, the rotation of the valve stem can be restricted, improving the stability of the valve stem when under pressure.

[0012] Preferably, a first sealing groove, a second sealing groove and a third sealing groove are formed in the side wall of the valve body, and a first sealing ring, a second sealing ring and a third sealing ring are respectively arranged inside the three grooves. The first sealing groove is located between the PC hole and the corrugated pipe, the second sealing groove is located between the PC hole and the PS hole, and the third sealing groove is located on the side of the PS hole away from the corrugated pipe.

[0013] By adopting the above technical solution, the first sealing ring, the second sealing ring and the third sealing ring can better seal the PC hole and the PS hole, reduce the occurrence of leakage, and improve the sealing performance of the electric control valve.

[0014] Preferably, a plurality of pressing grooves are formed at the bottoms of the first sealing groove and the third sealing groove. An arc-shaped pressing bar is slidably arranged in the pressing groove, and a compression spring for pushing the arc-shaped pressing bar to press the first sealing ring and the third sealing ring is arranged at the bottom of the pressing groove.

[0015] By adopting the above technical solution, when the electric control valve is in use, the compression spring pushes the arc-shaped pressing bar to press the first sealing ring and the third sealing ring, so that the first sealing ring and the third sealing ring can be extruded and deformed, improving the sealing performance of the first sealing ring and the third sealing ring, and still being able to better press the sealing part after the first sealing ring and the third sealing ring are severely worn, ensuring the sealing performance of the electric control valve after long-term use.

[0016] Preferably, a plurality of arc-shaped grooves are spaced apart at the bottom of the second sealing ring. A telescopic hole is formed at the bottom of the arc-shaped groove, and the telescopic hole communicates with the spiral guide groove. A telescopic rod is slidably connected in the telescopic hole. An arc-shaped piece connected to the telescopic rod is arranged on the arc-shaped groove. A guiding conical surface is formed at the bottom of the telescopic rod, and the guiding conical surface is inclined from the direction close to the corrugated pipe to the direction close to the spiral guide bar. The spiral locking bar is used to push the telescopic rod to abut against the second sealing ring.

[0017] By adopting the above technical solution, there are two cases during use. When the spiral locking bar is disengaged from the spiral guide groove and the PC hole is connected to the PS hole, there is no requirement for sealing at this time, and the arc-shaped piece is away from the second sealing ring; when the spiral locking bar is screwed into the spiral guide groove and the PC hole and the PS hole are closed, it is necessary to completely disconnect the connection between the PC hole and the PS hole at this time. The spiral locking bar pushes the telescopic rod and drives the arc-shaped piece to push the second sealing ring to expand outwards, so that the second sealing ring can be deformed, thereby better ensuring the sealing effect of the second sealing ring; and with such a design, not only can the sealing effect of the second sealing ring be ensured, but also the wear of the second sealing ring can be reduced, and the service life of the second sealing ring can be improved.

[0018] Preferably, the depth direction of the PC hole is opened in the reverse direction of the locking rotation direction of the spiral locking bar, and the depth direction of the PS hole is opened in the locking rotation direction of the spiral locking bar.

[0019] By adopting the above technical solution, the PC hole and the PS hole opened in an inclined manner can cause the fluid entering the PC hole to be spin-added, push the rotation of the fluid, accelerate the flow of the fluid in the circulation ring groove, improve the smoothness of the fluid transportation, and then cooperate with the PS hole, so that the fluid can be discharged more smoothly, reduce the resistance and energy loss during the fluid flow, and improve the smoothness of the fluid flow.

[0020] Preferably, the PC hole and the PS hole are inclinedly opened in the direction of approaching each other.

[0021] By adopting the above technical solution, the PC hole and the PS hole are opened in a mutually inclined manner. On the one hand, the openings of the PC hole and the PS hole close to the valve hole can be closer to the valve hole connection, reducing the resistance and energy loss during fluid flow. On the other hand, the length of the valve hole can be greatly shortened, reducing the flow space of the fluid in the valve hole, reducing the resistance of the fluid passing through the electric control valve, and better ensuring the fluid flow rate; cooperating with multiple helically arranged components, the fluid can flow comprehensively inside the electric control valve, it is difficult to generate dead corners, reduce the accumulation of impurities, and the helical flow can achieve the purpose of synchronously cleaning the circulation ring groove, improve the cleanliness inside the electric control valve, and improve the convenience of using the electric control valve.

[0022] Preferably, a circulation chamfer is provided on the side wall of the circulation ring groove, and the chamfer is opened towards the spiral locking bar along its inclined direction.

[0023] By adopting the above technical solution, opening the chamfer can make the valve stem more conveniently inserted into the valve hole and improve the smoothness of the valve stem sliding.

[0024] Preferably, a limiting piece is provided on the valve stem, and a limiting groove for limiting the rotation angle of the limiting piece is provided on the inner wall of the valve hole.

[0025] By adopting the above technical solution, the cooperation of the limit piece and the limit groove can limit the rotation angle of the valve stem, so that the spiral locking strip and the spiral guide groove can be more accurately docked, improving the smoothness of the valve stem sliding.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. During use, the fluid sequentially passes through the PC hole, the circulation ring groove and the PS hole, so that the fluid can flow normally. When the pull ring is pulled to abut against the valve hole, the valve hole can be closed. When the fluid flows, through the cooperation of the spiral guide groove and the spiral guide bar, not only can the fluid flow area of the circulation ring groove be ensured to ensure the fluid flow rate, but also the overall strength of the valve stem can be strengthened under the action of the spiral guide bar to ensure the service life of the valve stem. Moreover, under the action of the spiral guide groove and the spiral guide bar arranged in a spiral shape, the fluid can be guided to change the turbulent flow phenomenon of the fluid entering the valve body, so that the fluid can flow more smoothly. And the spiral setting can cause the fluid to generate a spiral rotation during the flow process, generating a flow vortex, so that a certain suction can be generated during the fluid flow process, increasing the fluid flow rate, and thus the fluid flow rate can be increased per unit time, improving the fluid flow rate of the electro-control valve for conveying fluid;

[0028] 2. During use, when the valve stem slides in the valve hole, under the cooperation of the spiral locking strip and the spiral guide groove, the valve stem can be screwed into the valve hole. On the one hand, the purpose of sealing the valve hole can be achieved, improving the sealing performance of the valve hole; on the other hand, when the pressure gas enters through the PC hole, the position of the valve stem can be limited through the rotating spiral locking strip and the spiral guide groove, improving the stability of the valve stem closing the valve hole. Under the action of the return torsion spring, the spiral locking strip can be pulled to disengage from the spiral guide groove, improving the smoothness of pulling the valve stem;

[0029] 3. There are two cases during use. When the spiral locking strip disengages from the spiral guide groove and the PC hole is communicated with the PS hole, there is no requirement for sealing performance at this time, and the arc-shaped piece is far away from the second sealing ring; when the spiral locking strip is screwed into the spiral guide groove and the PC hole and the PS hole are closed, it is necessary to completely disconnect the communication between the PC hole and the PS hole at this time. The spiral locking strip pushes the telescopic rod and drives the arc-shaped piece to push the second sealing ring to expand outwards, so that the second sealing ring can be deformed, thus better ensuring the sealing effect of the second sealing ring; and adopting such a design can not only ensure the sealing effect of the second sealing ring, but also reduce the wear of the second sealing ring, improving the service life of the second sealing ring. Description of the Drawings

[0030] Figure 1 It is a cross-sectional view of an electro-control valve of a compressor according to an embodiment of the present application;

[0031] Figure 2 isFigure 1 Enlarged schematic view of part A in

[0032] Figure 3 is Figure 1 Enlarged schematic view of part B in

[0033] Reference numerals: 1, valve body; 2, first sealing ring; 3, PC hole; 4, second sealing ring; 5, PS hole; 6, third sealing ring; 7, valve stem; 8, magnetic induction slider; 9, electromagnetic coil; 10, reset torsion spring; 11, first chamber; 12, bellows; 13, first sealing groove; 14, valve hole; 15, second sealing groove; 16, third sealing groove; 17, arc-shaped piece; 18, telescopic rod; 19, spiral guide bar; 20, flow-through ring groove; 21, spiral locking bar; 22, spiral guide groove; 23, arc-shaped groove; 24, pressing groove; 25, arc-shaped pressing bar; 26, compression spring; 27, second chamber; 28, sealing pressing ring; 29, closing ring; 30, flow-through chamfer; 31, limiting piece; 32, limiting groove. Specific embodiments

[0034] The following further describes the present application in detail with reference to the Figure 1 - Figure 3 accompanying drawings.

[0035] An embodiment of the present application discloses an electric control valve for a compressor.

[0036] Referring to Figure 1 and Figure 2, A compressor electronic control valve, comprising a valve body 1 and a valve stem 7. A first chamber 11 and a second chamber 27 are provided in the valve body 1. Both ends of the valve stem 7 are inserted into the first chamber 11 and the second chamber 27 respectively. A bellows 12 is arranged in the first chamber 11. The valve body 1 abuts against the bellows 12. The bellows 12 is a pressure-sensitive element for monitoring the suction pressure. An electromagnetic coil 9 is installed in the second chamber 27. A magnetic induction slider 8 is fixed to one end of the valve stem 7 away from the bellows 12. By controlling the forward and reverse directions of the current in the electromagnetic coil 9, the magnetic induction slider 8 can be controlled to move along the axis direction of the valve stem 7, improving the convenience of controlling the valve stem 7. PC holes 3 and PS holes 5 are provided on the outer side of the valve body 1. A valve hole 14 for communicating the PC holes 3 and the PS holes 5 is provided in the valve body 1. The valve stem 7 is coaxially arranged with the valve hole 14. A flow ring groove 20 for fluid circulation is provided on the outer wall of the valve stem 7. Multiple spiral guide strips 19 are integrally formed on the outer wall of the flow ring groove 20. The spiral guide strips 19 are spirally arranged and their cross-sections are in the shape of a convex platform. Multiple spiral guide grooves 22 are provided on the inner wall of the valve hole 14. The spiral guide grooves 22 are spiral and their cross-sections are in the shape of a convex platform. The spiral guide grooves 22 and the spiral guide strips 19 have the same spiral direction and the same pitch. The middle position at the top of the spiral guide strip 19 is arranged opposite to the edge position of the spiral guide groove 22. The side walls of the spiral guide strip 19 and the side walls of the spiral guide groove 22 can better guide the fluid simultaneously. With such a design, when the fluid passes through the flow ring groove 20, the fluid can be better guided under the combined action of the spiral guide groove 22 and the spiral guide strip 19, making the eddy current of the fluid flow more stable. A closing ring 29 for closing the valve hole 14 is provided on the valve stem 7. A sealing pressure ring 28 is fixed to one side of the closing ring 29 close to the spiral locking strip 21. The sealing pressure ring 28 is made of rubber material. A friction surface is provided on the side of the sealing pressure ring 28 away from the closing ring 29. By providing the friction surface, the valve stem 7 can be fixed more stably, improving the stability when the valve stem 7 is locked.

[0037] A spiral locking strip 21 is integrally formed on the outer wall of the valve stem 7. The spiral locking strip 21 has the same spiral direction and the same pitch as the spiral guide groove 22. The spiral guide groove 22 and the spiral locking strip 21 are inserted and matched, so that the spiral guide groove 22 can be better sealed. A return torsion spring 10 is installed in the second chamber 27. Both ends of the return torsion spring 10 are fixed to the bottom of the second chamber 27 and the outer wall of the magnetic induction slider 8 respectively. The return torsion spring 10 is used to drive the spiral locking strip 21 to screw out of the spiral guide groove 22, improving the convenience of the movement of the valve stem 7. A flow chamfer 30 is provided on the side wall of the flow ring groove 20. The flow chamfer 30 is opened towards the spiral locking strip 21 along its inclined direction, so that the fluid can flow more smoothly. The thickness of the spiral guide strip 19 gradually decreases along the direction close to the bellows 12, which can not only reduce the resistance when the fluid flows through, but also enable the spiral locking strip 21 to be inserted into the spiral guide groove 22 more smoothly, improving the smoothness of the movement of the valve stem 7.

[0038] A first sealing groove 13, a second sealing groove 15 and a third sealing groove 16 are formed in the side wall of the valve body 1, and a first sealing ring 2, a second sealing ring 4 and a third sealing ring 6 are respectively arranged inside the three. The sealing rings adopt rectangular sealing rings. The first sealing groove 13 is installed between the PC hole 3 and the corrugated pipe 12. The second sealing groove 15 is located between the PC hole 3 and the PS hole 5. The third sealing groove 16 is located on the side of the PS hole 5 away from the corrugated pipe 12. With such a design, the PC hole 3 and the PS hole 5 can be better sealed, improving the overall sealing performance of the electric control valve. A plurality of pressure grooves 24 are formed at the bottoms of both the first sealing groove 13 and the third sealing groove 16. An arc-shaped pressing strip 25 is slidably connected in the pressure groove 24. The arc-shaped pressing strip 25 is in a C shape. A compression spring 26 for pushing the arc-shaped pressing strip 25 to press the first sealing ring 2 and the third sealing ring 6 tightly is installed at the bottom of the pressure groove 24. Through the extrusion of the compression spring 26, the first sealing ring 2 and the third sealing ring 6 can better seal the electric control valve. A plurality of arc-shaped grooves 23 are spaced apart at the bottom of the second sealing ring 4. A telescopic hole is formed at the bottom of the arc-shaped groove 23. The telescopic hole communicates with the spiral guide groove 22. A telescopic rod 18 is slidably connected in the telescopic hole. An arc-shaped piece 17 connected to the telescopic rod 18 is installed on the arc-shaped groove 23. The plurality of arc-shaped pieces 17 are used to support the second sealing ring 4; a guiding conical surface is formed at the bottom of the telescopic rod 18. The guiding conical surface is inclined from the direction close to the corrugated pipe 12 to the direction close to the spiral guide bar 19. The spiral locking bar 21 is used to push the telescopic rod 18 to press against the second sealing ring 4 tightly. Such a design can reduce the continuous pressing time of the second sealing ring 4, reduce the wear of the second sealing ring 4 during use, and can satisfy the sealing of the PC hole 3 and the PS hole 5, ensuring the sealing performance of the electric control valve when in use.

[0039] The depth direction of the PC hole 3 is opened in the reverse direction of the locking rotation direction of the spiral locking bar 21; the depth direction of the PS hole 5 is opened in the locking rotation direction of the spiral locking bar 21; the PC hole 3 and the PS hole 5 are inclined in the direction of approaching each other. With such a design, the fluid can be injected along the tangent line, so that the fluid can rotate, making the fluid flow more smoothly and quickly. In addition, with the inclined PC hole 3 and PS hole 5, the flow space of the fluid in the valve hole 14 is reduced, the resistance of the fluid passing through the electric control valve is reduced, and the flow rate of the fluid is better ensured.

[0040] The implementation principle of the electronic control valve of the compressor in the embodiments of the present application is as follows: When the electronic control valve works, the valve body 1 is installed in the equipment, and the magnetic induction slider 8 is controlled to move through the electromagnetic coil 9, so as to drive the valve stem 7 to move along its axis, achieving the purpose of controlling the opening and closing of the valve hole 14; through the cooperation of the spiral lock strip 21 and the spiral guide groove 22, while the axis of the valve stem 7 moves, it also rotates, better sealing the valve hole 14 and improving the sealing performance of the valve hole 14. Under the action of the spiral guide bar 19 and the spiral guide groove 22, the fluid entering the flow-through annular groove 20 rotates, thereby reducing the generation of turbulent flow of the water flow, increasing the flow velocity of the fluid, and the spiral setting can make the fluid generate a spiral rotation during the flow process, generating a flow vortex of the fluid, so that a certain suction force can be generated during the flow process of the fluid, increasing the flow velocity of the fluid, thereby increasing the fluid flow rate per unit time and improving the flow rate of the fluid conveyed by the electronic control valve. At the same time, under the action of the spiral lock strip 21 and the telescopic rod 18, the second sealing ring 4 is sealed when needed, and the pressure on the second sealing ring 4 is reduced when the PC hole 3 and the PS hole 5 are communicated, ensuring the service life of the second sealing ring 4.

[0041] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A compressor electronically controlled valve, characterized in that: The invention comprises a valve body (1) and a valve stem (7), wherein a first chamber (11) and a second chamber (27) are provided in the valve body (1), and two ends of the valve stem (7) are respectively inserted into the first chamber (11) and the second chamber (27), wherein a bellows (12) is provided in the first chamber (11), and the valve body (1) abuts against the bellows (12), and an electromagnetic coil (9) is provided in the second chamber (27), and a magnetic slider (8) is provided at one end of the valve stem (7) away from the bellows (12), and the electromagnetic coil (9) is used to control the magnetic slider (8) to move along the axis of the valve stem (7); a PC hole (3) and a PS hole (5) are provided on the outer side of the valve body (1), and a valve hole (14) for connecting the PC hole (3) and the PS hole (5) is provided in the valve body (1), and the valve stem (7) and the valve hole (14) are coaxially arranged, and the valve stem ( 7) A circulation annular groove (20) is provided on the outer wall of the circulation annular groove (20), and the circulation annular groove (20) is used to provide a flow space for the fluid. The outer wall of the circulation annular groove (20) is provided with a plurality of spiral guide strips (19). The inner wall of the valve hole (14) is provided with a plurality of spiral guide grooves (22). The spiral guide grooves (22) have the same rotation direction and the same pitch as the spiral guide strips (19). A closing ring (29) for closing the valve hole (14) is provided on the valve stem (7); a spiral locking strip (21) is provided on the outer wall of the valve stem (7), and the spiral locking strip (21) is plugged into and matched with the spiral guide groove (22). A reset torsion spring (10) is provided in the second chamber (27), and the two ends of the reset torsion spring (10) are respectively fixed on the inner wall of the second chamber (27) and the outer wall of the magnetic slider (8). The reset torsion spring (10) is used to drive the spiral locking strip (21) to rotate out of the spiral guide groove (22).

2. The compressor electronically controlled valve according to claim 1, characterized in that: A sealing pressure ring (28) is arranged on a side of the closed ring (29) close to the spiral lock strip (21), and a friction surface is arranged on a side of the sealing pressure ring (28) away from the closed ring (29).

3. The compressor electronically controlled valve according to claim 2, characterized in that: The side wall of the valve body (1) is provided with a first sealing groove (13), a second sealing groove (15) and a third sealing groove (16), and a first sealing ring (2), a second sealing ring (4) and a third sealing ring (6) are respectively arranged inside the three. The first sealing groove (13) is located between the PC hole (3) and the bellows (12), the second sealing groove (15) is located between the PC hole (3) and the PS hole (5), and the third sealing groove (16) is located on the side of the PS hole (5) away from the bellows (12).

4. The compressor electronically controlled valve according to claim 3, characterized in that: A plurality of pressing grooves (24) are provided at the bottom of the first sealing groove (13) and the bottom of the third sealing groove (16), arc-shaped pressing strips (25) are slidably arranged in the pressing grooves (24), and a compression spring (26) is provided at the bottom of the pressing grooves (24) for pushing the arc-shaped pressing strips (25) to press the first sealing ring (2) and the third sealing ring (6).

5. The compressor electronically controlled valve according to claim 4, characterized in that: A plurality of arc grooves (23) are provided at intervals at the bottom of the second sealing ring (4); a telescopic hole is provided at the bottom of the arc groove (23); the telescopic hole is communicated with the spiral guide groove (22); a telescopic rod (18) is slidably connected in the telescopic hole; an arc piece (17) connected to the telescopic rod (18) is provided on the arc groove (23); a guiding cone surface is provided at the bottom of the telescopic rod (18); the guiding cone surface is inclined from a direction close to the bellows (12) to a direction close to the spiral guide strip (19); and the spiral locking strip (21) is used to push the telescopic rod (18) to press against the second sealing ring (4).

6. The compressor electronically controlled valve according to claim 5, characterized in that: The PC hole (3) is opened in a depth direction opposite to the locking rotation direction of the spiral lock strip (21), and the PS hole (5) is opened in a depth direction along the locking rotation direction of the spiral lock strip (21).

7. The compressor electronically controlled valve according to claim 6, characterized in that: The PC hole (3) and the PS hole (5) are opened obliquely in a direction approaching each other.

8. The compressor electronically controlled valve according to claim 7, characterized in that: A circulation chamfer (30) is provided on the side wall of the circulation annular groove (20), and the circulation chamfer (30) is opened toward the spiral locking strip (21) along its inclined direction.

9. The compressor electronically controlled valve according to claim 8, characterized in that: A limiting plate (31) is provided on the valve stem (7), and a limiting groove (32) for limiting the rotation angle of the limiting plate (31) is provided on the inner wall of the valve hole (14).

Images