Control valves and four-way valves

Abstract

The present invention provides a control valve and a four-way valve. The control valve includes a sliding portion, a magnetic sleeve, a coil, a guide sleeve, a sliding pin, and a spiral groove. The magnetic sleeve is mounted on the sliding portion, rotatably disposed, and axially limited. The coil drives the magnetic sleeve in forward or reverse rotation when energized. The guide sleeve is mounted on the magnetic sleeve, and the guide sleeve is provided with a sliding groove along the axial direction. The sliding pin is disposed on one of the sliding portion and the magnetic sleeve, with one end of the sliding pin extending into the sliding groove. The spiral groove is disposed on the other of the sliding portion and the magnetic sleeve, with a portion of the sliding pin located within the spiral groove. The magnetic sleeve drives the sliding portion to move back and forth during forward and reverse rotation through the cooperation of the spiral groove, the sliding pin, and the sliding groove. With this solution, when the coil is energized, the reciprocating movement of the sliding portion is achieved through the rotation of the magnetic sleeve and the cooperation of other components. The cooperation of multiple components can maintain the sliding portion in place, eliminating the need for the coil to be continuously energized, thereby reducing energy consumption of the control valve.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration technology, and in particular to a control valve and a four-way valve. Background Art

[0002] The four-way valve switches between cooling and heating modes by energizing and de-energizing the electromagnetic coil. When energized, the attracting element within the pilot valve is magnetized, and the suction force on the core iron overcomes the spring force, causing the core iron to move toward one end of the attracting element. When de-energized, the attraction force on the core iron disappears, and the spring forces the core iron to move toward the pilot valve seat, thereby switching the refrigerant flow within the pilot valve. However, to overcome the spring force, the attracting element must be continuously powered to maintain suction to the core iron, preventing it from being pushed back by the spring. This requires the coil to be continuously energized to magnetize the attracting element, which consumes a significant amount of energy. Summary of the Invention

[0003] The present invention provides a control valve and a four-way valve to reduce energy consumption of the control valve.

[0004] In order to solve the above problems, according to one aspect of the present invention, there is provided a control valve, comprising: a sliding part; a magnetic sleeve, which is sleeved on the sliding part, the magnetic sleeve is rotatably arranged, and the magnetic sleeve is axially limited; a coil, which drives the magnetic sleeve to rotate forward or reverse when energized; a guide sleeve, which is sleeved on the magnetic sleeve, and the guide sleeve is axially provided with a sliding groove; a sliding pin, which is arranged on one of the sliding part and the magnetic sleeve, and one end of the sliding pin extends into the sliding groove; a spiral groove, which is arranged on the other of the sliding part and the magnetic sleeve, and a part of the sliding pin is located in the spiral groove; wherein, when the magnetic sleeve rotates forward and reverse, the sliding part is driven to move back and forth by the cooperation of the spiral groove, the sliding pin and the sliding groove.

[0005] Furthermore, the sliding pin is protrudingly provided on the outer wall of the sliding portion, the spiral groove is located on the magnetic sleeve, and the sliding groove is located on the inner wall of the guide sleeve.

[0006] Furthermore, there are multiple sliding pins, and the multiple sliding pins cooperate with different positions of the spiral groove; there are multiple sliding grooves, and the multiple sliding grooves cooperate with the multiple sliding pins in a one-to-one correspondence.

[0007] Furthermore, the control valve further comprises: a limiting portion, wherein the limiting portion and the magnetic sleeve are in limiting cooperation to limit the rotation angle of the magnetic sleeve.

[0008] Furthermore, the limiting portion has an arc-shaped groove, which is arranged around the axis of the guide sleeve. The magnetic sleeve includes a cylinder and a limiting block protruding from the cylinder, and the limiting block is located in the arc-shaped groove.

[0009] Furthermore, there are a plurality of arc-shaped grooves, and the plurality of arc-shaped grooves are distributed along the circumference of the limiting portion; there are a plurality of limiting blocks, and the plurality of limiting blocks and the plurality of arc-shaped grooves are arranged in a one-to-one correspondence.

[0010] Furthermore, the limiting portion includes a main body and an assembly block provided on the main body, the assembly block and the slide groove are in limiting cooperation, and the main body and the magnetic sleeve are in limiting cooperation.

[0011] Furthermore, the magnetic sleeve has multiple pairs of magnetic poles, the coil has multiple pairs of magnetic poles, and the coil is sleeved on the guide sleeve.

[0012] Furthermore, the control valve also includes: a valve seat, the sliding portion is slidably arranged in the valve seat, the valve seat has a stepped hole, one end of the guide sleeve and the magnetic sleeve are both inserted into the stepped hole, and the end face of the guide sleeve and the end face of the magnetic sleeve are both in contact with the stepped hole.

[0013] Furthermore, the control valve is a pilot valve.

[0014] According to another aspect of the present invention, a four-way valve is provided. The four-way valve comprises a main valve and the above-mentioned control valve, wherein the control valve is connected to the main valve.

[0015] The present invention provides a control valve comprising a sliding portion, a magnetic sleeve, a coil, a guide sleeve, a sliding pin, and a spiral groove. The magnetic sleeve is mounted on the sliding portion, rotatably disposed and axially limited. The coil, when energized, drives the magnetic sleeve in forward or reverse rotation. The guide sleeve is mounted on the magnetic sleeve, and the guide sleeve is provided with a sliding groove along its axial direction. The sliding pin is disposed on one of the sliding portion and the magnetic sleeve, with one end of the sliding pin extending into the sliding groove. The spiral groove is disposed on the other of the sliding portion and the magnetic sleeve, with a portion of the sliding pin located within the spiral groove. The magnetic sleeve drives the sliding portion to move back and forth during forward and reverse rotation through the coordination of the spiral groove, the sliding pin, and the sliding groove. With this solution, when the coil is energized, the reciprocating movement of the sliding portion is achieved through the rotation of the magnetic sleeve and the coordination of other components. When the sliding portion moves into position, the coil is de-energized, and the sliding portion stops moving. The coordination of multiple components maintains the sliding portion in position, eliminating the need for the coil to be continuously energized. This reduces energy consumption and conserves energy in the control valve.

[0016] The above scheme uses the self-locking condition of the spiral transmission to realize the movement of the sliding part in the control valve and the locking of the axial position. That is, the magnetic sleeve can drive the axial movement of the trailer, but the trailer cannot drive the magnetic sleeve to rotate. The magnetic sleeve is a magnetic rotor, which can rotate clockwise and counterclockwise under the control of the coil. The stroke of the sliding part is jointly controlled by the limit part and the pitch of the spiral groove. Each time the sliding part switches its position, it only needs to energize the coil for a few seconds and then cut off the power to achieve it, without the need for continuous power supply. The present invention can replace the existing electromagnetic coil continuous power supply scheme, which can greatly reduce the energy consumption of the coil, thereby achieving the purpose of reducing the energy consumption of the entire air-conditioning system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 shows a cross-sectional view of a control valve provided by an embodiment of the present invention;

[0019] Figure 2 Shown Figure 1 Exploded diagram of the control valve in;

[0020] Figure 3 Shown Figure 2 Schematic diagram of the structure of the magnetic sleeve;

[0021] Figure 4 Shown Figure 2 A schematic structural diagram of the sliding portion in FIG.

[0022] Figure 5 Shown Figure 2 Structural diagram of the guide sleeve in FIG.

[0023] Figure 6 Shown Figure 2 A schematic structural diagram of the limiting portion in FIG.

[0024] Figure 7 A schematic structural diagram of a four-way valve provided in an embodiment of the present invention is shown.

[0025] The above drawings include the following reference numerals:

[0026] 10. Sliding part; 20. Magnetic sleeve; 21. Cylinder; 22. Limit block; 30. Coil; 40. Guide sleeve; 41. Slide groove; 50. Slide pin; 60. Spiral groove; 70. Limit part; 71. Arc groove; 72. Main body; 73. Assembly block; 80. Valve seat; 90. Main valve. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative work are within the scope of protection of the present invention.

[0028] like Figures 1 to 6 As shown, an embodiment of the present invention provides a control valve, comprising: a sliding portion 10; a magnetic sleeve 20, sleeved on the sliding portion 10, rotatably disposed and axially limited; a coil 30, which, when energized, drives the magnetic sleeve 20 in forward or reverse rotation; a guide sleeve 40, sleeved on the magnetic sleeve 20, with a guide groove 41 axially disposed therein; a sliding pin 50, disposed on one of the sliding portion 10 and the magnetic sleeve 20, with one end of the sliding pin 50 extending into the guide groove 41; and a spiral groove 60, disposed on the other of the sliding portion 10 and the magnetic sleeve 20, with a portion of the sliding pin 50 located within the spiral groove 60. The spiral groove 60, the sliding pin 50, and the guide groove 41 cooperate to drive the sliding portion 10 to move back and forth during forward and reverse rotation of the magnetic sleeve 20. The magnetic sleeve 20 is immovable in the axial direction and can only rotate. The sliding portion 10 comprises a bracket and a slider assembly.

[0029] With this solution, after the coil 30 is energized, the magnetic sleeve 20 rotates. Due to the limiting effect of the slide groove 41, the inner wall of the spiral groove 60 can only drive the sliding pin 50 to move linearly under the rotational drive of the magnetic sleeve 20, thereby driving the reciprocating movement of the sliding part 10. Alternatively, the sliding pin 50 drives the spiral groove 60 to move linearly, thereby driving the reciprocating movement of the sliding part 10. When the sliding part 10 moves into position, the coil 30 is de-energized, and the sliding part 10 stops moving. The cooperation of multiple components can keep the sliding part 10 in place, thus eliminating the need for the coil 30 to be continuously energized. Therefore, the control valve reduces energy consumption and saves energy. Specifically, the control valve is a pilot valve.

[0030] Specifically, the spiral groove 60 is set to a suitable helix angle so that the component of the axial force along the inclined surface is smaller than the maximum static friction force. In this way, in the case of non-active driving, the sliding pin 50 and the spiral groove 60 cannot slide relative to each other, thereby achieving self-locking.

[0031] In this embodiment, the sliding pin 50 is protruding from the outer wall of the sliding portion 10, the spiral groove 60 is located on the magnetic sleeve 20, and the sliding groove 41 is located on the inner wall of the guide sleeve 40. Thus, when the magnetic sleeve 20 rotates, the limiting action of the spiral groove 60 and the sliding groove 41 forces the sliding pin 50 to move linearly along the sliding groove 41, thereby driving the sliding portion 10 to move linearly.

[0032] In this embodiment, there are multiple sliding pins 50, each of which is matched with different positions of the spiral groove 60; and there are multiple sliding grooves 41, each of which is matched with each of the sliding pins 50. This arrangement improves the structural stability of the control valve and ensures that the force applied to the sliding portion 10 is more uniform, resulting in smoother movement.

[0033] In this embodiment, the control valve further includes a limiting portion 70, which cooperates with the magnetic sleeve 20 to limit the rotation angle of the magnetic sleeve 20. By providing the limiting portion 70, the rotation angle of the magnetic sleeve 20 can be limited, thereby limiting the movement range of the sliding portion 10.

[0034] Specifically, the limiting portion 70 has an arc-shaped groove 71, which is arranged around the axis of the guide sleeve 40. The magnetic sleeve 20 includes a cylinder 21 and a limiting block 22 protruding from the cylinder 21, and the limiting block 22 is located in the arc-shaped groove 71. When the cylinder 21 rotates, the limiting block 22 moves in the arc-shaped groove 71. When the limiting block 22 abuts against either end of the arc-shaped groove 71, the cylinder 21 stops moving and the sliding portion 10 also stops moving. Therefore, the movement range of the sliding portion 10 is limited by the cooperation of the limiting block 22 and the arc-shaped groove 71. Moreover, by setting appropriate parameters, when the limiting block 22 abuts against either end of the arc-shaped groove 71, the sliding portion 10 moves to the predetermined position, thereby facilitating the control of the sliding portion 10 to move into position.

[0035] In this embodiment, there are multiple arcuate grooves 71, which are distributed along the circumference of the limiting portion 70, and multiple limiting blocks 22, which are arranged in a one-to-one correspondence with the multiple arcuate grooves 71. Through the above arrangement, the structural stability and limiting effect can be improved.

[0036] Furthermore, the limiting portion 70 includes a main body 72 and an assembly block 73 disposed on the main body 72. The assembly block 73 and the slide groove 41 are engaged in a limiting manner, and the main body 72 and the magnetic sleeve 20 are engaged in a limiting manner. In this embodiment, the guide sleeve 40 is fixedly arranged, and the limiting portion 70 can be fixed by the engagement of the assembly block 73 and the slide groove 41, and then the rotation range of the magnetic sleeve 20 is limited by the main body 72.

[0037] In this embodiment, the magnetic sleeve 20 has multiple pairs of magnetic poles, and the coil 30 has multiple pairs of magnetic poles. The coil 30 is mounted on a guide sleeve 40. When the coil is energized, the magnetic field drives the magnetic sleeve 20 to rotate. By varying the current pulse, the speed and direction can be adjusted. This is similar to the driving method of a stepper motor.

[0038] In this embodiment, the control valve further includes a valve seat 80, within which the sliding portion 10 is slidably disposed. The valve seat 80 has a stepped hole, into which one end of the guide sleeve 40 and the magnetic sleeve 20 are both inserted, with the end faces of the guide sleeve 40 and the magnetic sleeve 20 abutting against the stepped hole. The valve seat 80 provides both protection and sealing. Furthermore, the valve seat 80 limits the axial position of the guide sleeve 40 and the magnetic sleeve 20.

[0039] like Figure 7 As shown, another embodiment of the present invention provides a four-way valve, which includes a main valve 90 and the above-mentioned control valve, and the control valve is connected to the main valve 90. Specifically, the control valve is a pilot valve. With this solution, after the coil 30 is energized, the magnetic sleeve 20 rotates. Due to the limiting effect of the slide groove 41, under the rotation drive of the magnetic sleeve 20, the inner wall of the spiral groove 60 can only drive the sliding pin 50 to move linearly, thereby driving the sliding part 10 to move back and forth, or the sliding pin 50 drives the spiral groove 60 to move linearly, thereby driving the sliding part 10 to move back and forth. When the sliding part 10 moves into position, the coil 30 is de-energized and the sliding part 10 stops moving. The sliding part 10 can be kept in position by the cooperation of multiple components. In this way, there is no need for the coil 30 to be energized all the time, so the control valve and the four-way valve reduce energy consumption and save energy.

[0040] The above scheme uses the self-locking condition of the spiral transmission to realize the movement of the sliding part in the control valve and the locking of the axial position. That is, the magnetic sleeve can drive the axial movement of the trailer, but the trailer cannot drive the magnetic sleeve to rotate. The magnetic sleeve is a magnetic rotor, which can rotate clockwise and counterclockwise under the control of the coil. The stroke of the sliding part is jointly controlled by the limit part and the pitch of the spiral groove. Each time the sliding part switches its position, it only needs to energize the coil for a few seconds and then cut off the power to achieve it, without the need for continuous power supply. The present invention can replace the existing electromagnetic coil continuous power supply scheme, which can greatly reduce the energy consumption of the coil, thereby achieving the purpose of reducing the energy consumption of the entire air-conditioning system.

[0041] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A control valve, characterized in that: include: Sliding portion (10); A magnetic sleeve (20) is sleeved on the sliding portion (10), the magnetic sleeve (20) is rotatably arranged, and the magnetic sleeve (20) is axially limited; a coil (30), wherein the coil (30) drives the magnetic sleeve (20) to rotate forward or reverse when energized; A guide sleeve (40) is sleeved on the magnetic sleeve (20), and a sliding groove (41) is provided on the guide sleeve (40) along the axial direction; A sliding pin (50) is provided on the sliding portion (10), and one end of the sliding pin (50) extends into the sliding groove (41); A spiral groove (60) is provided on the magnetic sleeve (20), and a portion of the sliding pin (50) is located in the spiral groove (60); Wherein, when the magnetic sleeve (20) rotates forward and reverse, the sliding portion (10) is driven to move back and forth through the cooperation of the spiral groove (60), the sliding pin (50) and the sliding groove (41); A limiting portion (70), wherein the limiting portion (70) and the magnetic sleeve (20) are in limiting cooperation to limit the rotation angle of the magnetic sleeve (20); The limiting portion (70) has an arc-shaped groove (71), and the arc-shaped groove (71) is arranged around the axis of the guide sleeve (40). The magnetic sleeve (20) comprises a cylinder (21) and a limiting block (22) protruding from the cylinder (21), and the limiting block (22) is located in the arc-shaped groove (71); The limiting portion (70) comprises a main body (72) and an assembly block (73) provided on the main body (72); the assembly block (73) and the slide groove (41) are in limiting cooperation; and the main body (72) and the magnetic sleeve (20) are in limiting cooperation.

2. The control valve according to claim 1, characterized in that The sliding pin (50) is protrudingly arranged on the outer wall of the sliding portion (10), the spiral groove (60) is located on the magnetic sleeve (20), and the sliding groove (41) is located on the inner wall of the guide sleeve (40).

3. The control valve according to claim 1, wherein: There are multiple sliding pins (50), and the multiple sliding pins (50) are matched with different positions of the spiral groove (60); there are multiple sliding grooves (41), and the multiple sliding grooves (41) are matched with the multiple sliding pins (50) in a one-to-one correspondence.

4. The control valve according to claim 1, wherein: There are a plurality of arc-shaped grooves (71), and the plurality of arc-shaped grooves (71) are distributed along the circumference of the limiting portion (70); there are a plurality of limiting blocks (22), and the plurality of limiting blocks (22) and the plurality of arc-shaped grooves (71) are arranged in a one-to-one correspondence.

5. The control valve according to claim 1, wherein: The magnetic sleeve (20) has multiple pairs of magnetic poles, the coil (30) has multiple pairs of magnetic poles, and the coil (30) is sleeved on the guide sleeve (40).

6. The control valve according to claim 1, wherein: The control valve further comprises: The valve seat (80) is provided with a sliding portion (10) which is slidably disposed in the valve seat (80). The valve seat (80) has a stepped hole. One end of the guide sleeve (40) and the magnetic sleeve (20) are both inserted into the stepped hole. The end surface of the guide sleeve (40) and the end surface of the magnetic sleeve (20) are both in contact with the stepped hole.

7. The control valve according to claim 1, wherein: The control valve is a pilot valve.

8. A four-way valve, characterized in that: The four-way valve comprises a main valve (90) and a control valve according to any one of claims 1 to 7, and the control valve and the main valve (90) are connected.

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