A valve, a cylinder, a compressor and an air conditioner

Abstract

The present invention provides a valve, a cylinder, a compressor and an air conditioner, relating to the technical field of air conditioners, and solving the technical problem in the prior art that the compressor pump body only allows the roller to rotate in one direction to realize the air intake and exhaust operations of the cylinder. The device includes a first plug body (10) and a second plug body (11), the second plug body (11) is disposed inside the first plug body (10), and at the air intake and exhaust ports of the cylinder, the second plug body (11) can cooperate with the first plug body (10) to form a channel for gas to enter or exit the cylinder. The valve of the present invention can work bidirectionally to alternately form an air intake channel and an exhaust channel of the cylinder, and further enable the cylinder to allow the roller to rotate bidirectionally to realize the air intake and exhaust operations, thereby changing the single-direction working mode of the cylinder and realizing the bidirectional rotation working mode of the roller in the cylinder.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to a valve, a cylinder, a compressor and an air conditioner. Background Art

[0002] A rotary compressor generally includes components such as a crankshaft, a cylinder, a roller and a sliding vane. Under the action of an electric motor, the roller is driven by the crankshaft to rotate in one direction, and during the rotation process, it contacts with the sliding vane to perform the suction and exhaust operations. As Figure 1 shown, Figure 1 FIG. shows a schematic structural diagram of a cylinder in the prior art, which includes an air inlet hole 20 located on both sides of a sliding vane groove 22 and a crescent-shaped exhaust hole 21 located on the inner wall of the cylinder. Therefore, the cylinder structure in the prior art only allows the roller to rotate in one direction to achieve the suction and exhaust operations.

[0003] The applicant of the present invention has found that the prior art has at least the following technical problems: Since the current rotary compressor only allows the roller to rotate in one direction, if it runs for a long time or under harsh working conditions, various friction pairs of the pump body in the compressor will have different degrees of eccentric wear, which not only increases power consumption, but also after the surface roughness of the working surface of the parts increases, it further exacerbates the wear of the parts, greatly shortening the service life of the compressor. Especially for the friction pair of the sliding vane and the roller, for a compressor that can only rotate in one direction, after a long time of operation, the tip of the sliding vane will have serious eccentric wear, resulting in the problem that the surface roughness of the tip of the sliding vane deteriorates continuously. Summary of the Invention

[0004] The purpose of the present invention is to provide a valve, a cylinder, a compressor and an air conditioner to solve the technical problem in the prior art that the compressor pump body only allows the roller to rotate in one direction to achieve the suction and exhaust operations of the cylinder. The many technical effects that can be produced by the preferred technical solutions provided by the present invention are described in detail below.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A valve provided by the present invention includes a first plug body and a second plug body. The second plug body is placed inside the first plug body, and at the suction port and the exhaust port of the cylinder, the second plug body can cooperate with the first plug body to form a channel for gas to enter or exit the cylinder;

[0007] Wherein, a cavity is formed inside the first plug body, and the second plug body can move in the cavity of the first plug body respectively in a direction close to the cylinder and in a direction away from the cylinder to form a channel for gas to enter or exit the cylinder.

[0008] According to a preferred embodiment, the second plug body is placed in the cavity of the first plug body in a clearance fit manner.

[0009] According to a preferred embodiment, the first plug body has an outer end face in the direction towards the outside of the cylinder, a through hole is provided on the outer end face, and a first ventilation hole and a second ventilation hole are provided on the side wall of the first plug body. Among them, the central connection line of the first ventilation hole and the second ventilation hole is arranged parallel to the longitudinal axis of the first plug body.

[0010] According to a preferred embodiment, a planar structure is formed on the side wall of the first plug body where the first ventilation hole and the second ventilation hole are located, so as to form a gap between the first plug body and the hole wall of the valve mounting hole at the air inlet and air outlet of the cylinder.

[0011] According to a preferred embodiment, the second plug body has an open structure at both ends. A partition is provided near one end inside the second plug body, and a third ventilation hole is provided on the side wall of the second plug body. And the third ventilation hole is arranged at a position closer to the other end of the second plug body relative to the partition.

[0012] According to a preferred embodiment, when the second plug body is placed in the cavity of the first plug body, the partition is arranged in a manner close to the outer end face of the first plug body;

[0013] In the suction state, the third ventilation hole of the second plug body can communicate with the second ventilation hole of the first plug body arranged away from the outer end face, and form a channel for gas to enter the cylinder with the through hole and the first ventilation hole;

[0014] In the exhaust state, the third ventilation hole of the second plug body can communicate with the first ventilation hole of the first plug body arranged close to the outer end face to form a channel for gas to discharge from the cylinder.

[0015] According to a preferred embodiment, guide edges are provided on the side face of the first plug body opposite to the planar structure, and corresponding guide grooves are provided in the valve mounting hole of the cylinder, so that the first plug body is installed in the valve mounting hole of the cylinder through the cooperation of the guide edges and the guide grooves.

[0016] According to a preferred embodiment, the first plug body and the valve mounting hole are connected by an interference fit.

[0017] According to a preferred embodiment, it further includes a first elastic member and a second elastic member. Among them, the first elastic member is arranged between the outer end face of the first plug body and the partition of the second plug body; the second elastic member is arranged between the partition and the convex platform extending outward at the valve mounting hole of the cylinder.

[0018] The present invention also provides a cylinder including the valve described above.

[0019] According to a preferred embodiment, it further includes a first valve mounting hole and a second valve mounting hole. The first valve mounting hole and the second valve mounting hole are arranged along the radial direction of the cylinder, and the first valve mounting hole and the second valve mounting hole are symmetrically arranged on both sides of the sliding vane with respect to the sliding vane groove.

[0020] According to a preferred embodiment, guide grooves capable of being cooperatively installed with the first plug body are provided on the inner walls of the first valve mounting hole and the second valve mounting hole.

[0021] The present invention further provides a compressor, including the cylinder described above, and further including a crankshaft and a motor. Wherein, one end of the crankshaft is connected to the motor, and the motor can rotate bidirectionally to control the roller to rotate clockwise or counterclockwise through the crankshaft.

[0022] The present invention further provides an air conditioner, including the compressor described above, and further including a two-way throttle valve and a motor control system. Wherein, both ends of the two-way throttle valve are respectively connected to the outdoor unit and the indoor unit, and are connected to the copper pipes connected to the first valve mounting hole and the second valve mounting hole of the cylinder through the outdoor unit and the indoor unit. The motor control system can control the motor of the compressor to be in different rotation modes when the air conditioner is in the cooling and heating modes respectively.

[0023] Based on the above technical solutions, the valve, cylinder, compressor and air conditioner provided by the present invention at least have the following technical effects:

[0024] The valve provided by the present invention is provided with a first plug body and a second plug body. The second plug body is arranged inside the first plug body. Thus, a channel for gas to enter or exit the cylinder is formed through the cooperation of the second plug body and the first plug body at the suction port and the exhaust port of the cylinder. On the one hand, the valve provided by the present invention can be used to form a channel for gas to enter the cylinder at the suction port of the cylinder, and at the same time can be used to form a channel for gas to exit the cylinder at the exhaust port of the cylinder. Therefore, the valve of the present invention can work bidirectionally to alternately form the intake channel and the exhaust channel of the cylinder, and further enable the cylinder to allow the roller to rotate bidirectionally to realize the suction and exhaust operations, thereby changing the single-direction working mode of the cylinder and realizing the working mode of the roller rotating bidirectionally in the cylinder.

[0025] On the other hand, the present invention also provides a cylinder. By providing a first valve mounting hole and a second valve mounting hole for mounting valves on the cylinder, and the first valve mounting hole and the second valve mounting hole are symmetrically arranged on both sides of the sliding vane with respect to the sliding vane groove. Thus, after the valves are mounted into the first valve mounting hole and the second valve mounting hole, when the cylinder roller rotates clockwise and counterclockwise, the valves in the first valve mounting hole and the second valve mounting hole can alternately serve as the suction passage and the exhaust passage, thereby improving the problem of uneven wear of the friction pairs of the compressor pump body parts. In particular, it can make the arcs on both sides of the tip of the sliding vane of the cylinder alternately form friction pairs with the roller, avoiding the problem of uneven wear at the tip of the sliding vane and extending the service life of the sliding vane.

[0026] On the other hand, the present invention also provides a compressor. Through the motor control system of the air conditioner, the compressor motor rotates bidirectionally, thereby driving the roller to rotate clockwise or counterclockwise bidirectionally. And when the roller rotates clockwise and counterclockwise, based on the pressure difference formed by the rotation of the roller, the valves in the first valve mounting hole and the valves in the second valve mounting hole alternately form the suction passage and the exhaust passage, enabling the compressor to perform the suction and exhaust operations both when the roller rotates clockwise and counterclockwise. The bidirectional working mode of the compressor is realized, and at the same time, the problem of uneven wear of the friction pairs of the compressor pump body parts is avoided.

[0027] On the other hand, the present invention also provides an air conditioner. By setting the motor control system of the air conditioner to be able to control the motor to rotate bidirectionally, the motor rotates bidirectionally and then drives the roller to rotate clockwise or counterclockwise. At the same time, a two-way throttle valve is connected between the outdoor unit and the indoor unit. When the motor control system controls the motor to rotate forward and backward, the flow direction of the refrigerant can be changed, realizing the switching between refrigeration and heating. At the same time, it can improve the problem of uneven wear of the friction pairs of the compressor pump body parts of the air conditioner and improve the service life of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0029] Figure 1 is a structural diagram of a cylinder in the prior art;

[0030] Figure 2 is a cross-sectional view of the valve of the present invention;

[0031] Figure 3 is a three-dimensional structural diagram of the first plug body in the valve of the present invention;

[0032] Figure 4It is a structural diagram of the first plug body in the valve of the present invention from another perspective;

[0033] Figure 5 It is a three-dimensional structural diagram of the second plug body in the valve of the present invention;

[0034] Figure 6 It is a structural diagram of the second plug body in the valve of the present invention from another perspective;

[0035] Figure 7 It is a schematic diagram of the valve of the present invention in the exhaust state;

[0036] Figure 8 It is a schematic diagram of the valve of the present invention in the suction state;

[0037] Figure 9 It is a schematic structural diagram of the cylinder of the present invention;

[0038] Figure 10 It is a view of the cylinder of the present invention in the S direction;

[0039] Figure 11 It is a working state diagram of the cylinder of the present invention when the roller rotates clockwise;

[0040] Figure 12 It is a working state diagram of the cylinder of the present invention when the roller rotates counterclockwise;

[0041] Figure 13 It is a diagram of the contact stress received by the tip of the sliding vane when the cylinder roller of the present invention rotates clockwise;

[0042] Figure 14 It is a diagram of the contact stress received by the tip of the sliding vane when the cylinder roller of the present invention rotates counterclockwise;

[0043] Figure 15 It is a schematic diagram of the refrigerant flow direction of the air conditioner of the present invention in the cooling mode;

[0044] Figure 16 It is a schematic diagram of the refrigerant flow direction of the air conditioner of the present invention in the heating mode.

[0045] In the figure: 1 - cylinder; 2 - copper tube; 3 - sliding vane; 4 - roller; 10 - first plug body; 11 - second plug body; 12 - first elastic member; 13 - second elastic member; 15 - first valve mounting hole; 16 - second valve mounting hole; 17 - outdoor unit; 18 - indoor unit; 19 - two-way throttle valve; 20 - suction hole; 21 - exhaust hole; 22 - sliding vane groove; 101 - first ventilation hole; 102 - second ventilation hole; 103 - outer end face; 104 - through hole; 105 - guiding edge; 106 - planar structure; 111 - third ventilation hole; 112 - partition; 151 - guiding groove; 152 - boss. Detailed implementation manners

[0046] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other implementation manners obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope protected by the present invention.

[0047] The following will be combined with the Figures 2 to 16 Description of the drawings to detail the technical solutions of the present invention.

[0048] The present invention provides a valve, including a first plug body 10 and a second plug body 11. The second plug body 11 is placed inside the first plug body 10. At the air inlet and exhaust port of the cylinder, the second plug body 11 can cooperate with the first plug body 10 to form a channel for gas to enter or exit the cylinder. On the one hand, the valve provided by the present invention can be used at the air inlet of the cylinder to form a channel for gas to enter the cylinder, and on the other hand, it can also be used at the exhaust port of the cylinder to form a channel for gas to exit the cylinder. Therefore, the valve of the present invention can work bidirectionally to alternately form the intake channel and exhaust channel of the cylinder, and further enable the cylinder to allow the roller to rotate bidirectionally to achieve the intake and exhaust operations.

[0049] Preferably, as Figure 1 shown, a cavity is formed inside the first plug body 10. Preferably, the first plug body 10 has a cylindrical structure with a cavity inside. Preferably, the second plug body 11 can move in the cavity of the first plug body 10 respectively towards and away from the cylinder to form a channel for gas to enter or exit the cylinder. Preferably, the second plug body 11 is placed in the cavity of the first plug body 10 by means of clearance fit. Thus, the valve of the present invention can alternately serve as the intake channel of the air inlet of the cylinder and the exhaust channel of the exhaust port to allow the cylinder roller to rotate bidirectionally.

[0050] Preferably, as Figure 3 and Figure 4 shown, the first plug body 10 is provided with an outer end face 103 in the direction towards the outside of the cylinder. A through hole 104 is provided on the outer end face 103. When the through hole 104 is used to form a channel for gas to enter the cylinder in the intake state, the gas enters the valve through the through hole 104. A first ventilation hole 101 and a second ventilation hole 102 are provided on the side wall of the first plug body 10. Among them, the central connection line of the first ventilation hole 101 and the second ventilation hole 102 is arranged parallel to the longitudinal axis of the first plug body 10. Preferably, the centers of the first ventilation hole 101 and the second ventilation hole 102 are on the same straight line, and the first ventilation hole 101 is closer to the outside of the cylinder, and the second ventilation hole 102 is closer to the inside of the cylinder.

[0051] Preferably, a planar structure 106 is formed on the side wall where the first plug body 10 is located and where the first ventilation hole 101 and the second ventilation hole 102 are located, so as to form a gap between the first plug body 10 and the hole wall of the valve mounting hole at the air inlet and outlet of the cylinder 1. Thus, a flow channel for gas can be provided during the suction and exhaust states.

[0052] Preferably, as Figure 5 and Figure 6 shown, the second plug body 11 has an open-ended structure at both ends. Preferably, a partition 112 is provided near one end inside the second plug body 11. The partition 112 divides the second plug body 11 with open ends at both ends into two parts. Preferably, a third ventilation hole 111 is provided on the side wall of the second plug body 11, and the third ventilation hole 111 is arranged at a position closer to the other end of the second plug body 11 relative to the partition 112. Preferably, as Figure 1 shown, when the second plug body 11 is placed in the cavity of the first plug body 10, the partition 112 is arranged in a manner close to the outer end face 103 of the first plug body 10. Preferably, in the suction state, the third ventilation hole 111 of the second plug body 11 can communicate with the second ventilation hole 102 arranged away from the outer end face 103 of the first plug body 10, and form a gas inlet channel into the cylinder with the through hole 104 and the first ventilation hole 101; as Figure 8 shown. That is, when the valve is in the suction state, at this time, a negative pressure is formed in the suction cavity of the cylinder. Under the action of the air pressure difference inside and outside the cylinder, the second plug body 11 will move towards the inner side of the cylinder, and the third ventilation hole 111 of the second plug body can communicate with the second ventilation hole 102 of the first plug body 10, and the gas enters the cylinder through the through hole 104, the first ventilation hole 101, the gap between the valve and the valve mounting hole, and the communicated second ventilation hole 102 and third ventilation hole 111. Preferably, in the exhaust state, the third ventilation hole 111 of the second plug body 11 can communicate with the first ventilation hole 101 arranged close to the outer end face 103 of the first plug body 10 to form a gas discharge channel for the cylinder, as Figure 7 shown. That is, when the valve is in the exhaust state, at this time, the gas in the cylinder is compressed to form a high pressure. When the pressure difference inside and outside the second plug body reaches a certain value, the second plug body 11 will move towards the outer side of the cylinder, and the third ventilation hole 111 of the second plug body 11 can communicate with the first ventilation hole 101 of the first plug body 10, and the gas is discharged from the cylinder through the communicated third ventilation hole 111 and first ventilation hole 101 and then through the gap between the valve and the valve mounting hole.

[0053] Preferably, as Figure 1As shown, the valve of the present invention further includes a first elastic member 12 and a second elastic member 13. Among them, the first elastic member 12 is disposed between the outer end surface 103 of the first plug body 10 and the partition 112 of the second plug body 11. Preferably, the second elastic member 13 is disposed between the partition 112 and the boss 152 extending outward from the cylinder 1 at the valve mounting hole. Preferably, the first elastic member 12 and the second elastic member 13 are springs. Preferably, when the first elastic member 12 and the second elastic member 13 are in the natural state, the third vent hole 111 of the second plug body 11 is located between the first vent hole 101 and the second vent hole 102 of the first plug body 10. Preferably, the first elastic member 12 and the second elastic member 13 can connect the third vent hole 111 of the second plug body 11 with the second vent hole 102 in the suction state, and connect the third vent hole 111 of the second plug body 11 with the first vent hole 101 in the exhaust state.

[0054] Preferably, guiding edges 105 are provided on the first plug body 10 and on the side surfaces opposite to the planar structure 106. A guiding groove 151 corresponding to the guiding edges 105 is provided in the valve mounting hole of the cylinder 1, so that the first plug body 10 is installed into the valve mounting hole of the cylinder 1 through the cooperation of the guiding edges 105 and the guiding groove 151. Preferably, the first plug body 10 and the valve mounting hole are connected by an interference fit.

[0055] According to a preferred embodiment, the present invention further provides a cylinder including the valve described above. Preferably, as Figure 9 and Figure 10 shown, the cylinder of the present invention further includes a first valve mounting hole 15 and a second valve mounting hole 16. The first valve mounting hole 15 and the second valve mounting hole 16 are arranged along the radial direction of the cylinder 1. Preferably, the first valve mounting hole 15 and the second valve mounting hole 16 are symmetrically arranged on both sides of the sliding vane 3 with respect to the sliding vane groove. Preferably, guiding grooves 151 capable of cooperating with the first plug body 10 are provided on the inner walls of the first valve mounting hole 15 and the second valve mounting hole 16. It is installed on the cylinder through the cooperation of the guiding grooves 151 on the first valve mounting hole 15 and the second valve mounting hole 16 and the guiding edges 105 of the first plug body 10 of the valve. By providing the first valve mounting hole 15 and the second valve mounting hole 16 on the cylinder, and the first valve mounting hole and the second valve mounting hole are symmetrically arranged on both sides of the sliding vane, after the valve is installed into the first valve mounting hole and the second valve mounting hole, it can be alternately used as the suction channel and the exhaust channel when the cylinder roller rotates clockwise and counterclockwise, so that the arcs on both sides of the tip of the sliding vane of the cylinder can alternately form friction pairs with the roller, avoiding the problem of eccentric wear at the tip of the sliding vane and extending the service life of the sliding vane. Preferably, as Figure 11 and Figure 13 shown, when the roller rotates clockwise, the valve in the first valve mounting hole 15 is in the suction state, while the valve in the second valve mounting hole 16 is in the exhaust state. At this time, the contact stress received by the tip of the sliding vane is asFigure 13 As shown, the contact stress on the tip of the sliding vane on the side close to the second valve mounting hole is relatively large, and it is easy to be worn when contacting the roller. As Figure 12 and Figure 14 shown, when the roller rotates counterclockwise, the valve in the first valve mounting hole 15 is in the exhaust state, while the valve in the second valve mounting hole 16 is in the suction state. At this time, the contact stress on the tip of the sliding vane is as Figure 14 shown. The contact stress on the tip of the sliding vane on the side close to the first valve mounting hole is relatively large, and it is easy to be worn when contacting the roller. Therefore, for the compressor using the valve and cylinder of the present invention, after running for a period of time, by reversing the motor, at this time, the part with a relatively large contact stress on the tip of the sliding vane becomes the other side of the tip of the sliding vane, so that the arc surfaces on both sides of the tip of the sliding vane can alternately form a friction pair with the roller, thereby improving the problem of increased power consumption caused by uneven wear of the friction pair between the tip of the sliding vane and the roller, and extending the service life of the sliding vane.

[0056] According to another preferred embodiment of the present invention, the present invention also provides a compressor, including the cylinder described above, and further including a crankshaft and a motor. Preferably, one end of the crankshaft is connected to the motor. Preferably, the motor can rotate bidirectionally to control the roller 4 to rotate clockwise or counterclockwise through the crankshaft. When the compressor is working normally, the wall surface of the roller is always in contact with the tip of the sliding vane. However, in the low-pressure chamber, the tip of the sliding vane always follows the roller, and the contact stress is relatively small. While in the high-pressure chamber, the back pressure of the sliding vane is the exhaust pressure, and the tip of the sliding vane always hinders the movement of the roller, generating a relatively large contact stress. After long-term operation, due to severe wear of the contact stress part and the wall surface of the roller, the wear of the arc surface at the tip of the sliding vane is aggravated, reducing the service life of the compressor. By using the compressor with the valve and cylinder of the present invention, after running for a period of time, the motor is reversed, so that the arc surfaces on both sides of the tip of the sliding vane can alternately form a friction pair with the roller, thereby improving the problem of increased power consumption caused by uneven wear of the friction pair between the tip of the sliding vane and the roller, and extending the service life of the compressor.

[0057] According to another preferred embodiment of the present invention, the present invention also provides an air conditioner, as Figure 15 and Figure 16 shown, including a compressor, and further including a two-way throttle valve 19 and a motor control system. Among them, both ends of the two-way throttle valve 19 are respectively connected to the outdoor unit 17 and the indoor unit 18, and are connected to the copper pipe 2 connected to the first valve mounting hole 15 and the second valve mounting hole 16 of the cylinder 1 through the outdoor unit 17 and the indoor unit 18. Preferably, the motor control system can control the motor of the compressor to be in different steering modes when the air conditioner is in the cooling and heating modes respectively. Thus, the motor of the compressor drives the roller to rotate clockwise and counterclockwise in the cooling and heating modes respectively. Preferably, as Figure 15As shown, in the refrigeration mode, the roller is controlled by the motor control system to rotate clockwise. At this time, the valve in the second valve mounting hole is in the exhaust state, and the gaseous refrigerant passes through the valve in the first valve mounting hole into the cylinder after passing through the outdoor unit 17, the two-way throttle valve 19, and the indoor unit 18, and the valve in the first valve mounting hole is in the suction state. As Figure 16 shown, in the heating mode, the roller is controlled by the motor control system to rotate counterclockwise. At this time, the gas is discharged through the valve in the first valve mounting hole, and then enters the cylinder through the valve in the second valve mounting hole after passing through the indoor unit 18, the two-way throttle valve 19, and the outdoor unit 17, and the valve in the second valve mounting hole is in the suction state. Thus, the problem of uneven wear of the friction pair of the compressor pump body parts of the air conditioner can be improved, and the service life of the air conditioner can be extended.

[0058] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A valve, characterized in that, It includes a first plug body (10) and a second plug body (11). The second plug body (11) is placed inside the first plug body (10). At the air inlet and air outlet of the cylinder, the second plug body (11) can cooperate with the first plug body (10) to form a channel for gas to enter or exit the cylinder. Among them, a cavity is formed inside the first plug body (10). The second plug body (11) can move in the cavity of the first plug body (10) respectively towards the direction close to the cylinder and away from the cylinder to form a channel for gas to enter or exit the cylinder. The first plug body (10) is provided with an outer end face (103) in the direction towards the outside of the cylinder. A through hole (104) is provided on the outer end face (103). A first ventilation hole (101) and a second ventilation hole (102) are provided on the side wall of the first plug body (10). A planar structure (106) is formed on the side wall of the first plug body (10) where the first ventilation hole (101) and the second ventilation hole (102) are located, so as to form a gap between the first plug body (10) and the hole wall of the valve mounting hole at the air inlet and air outlet of the cylinder (1).

2. The valve according to claim 1, characterized in that, The second plug body (11) is placed in the cavity of the first plug body (10) in a clearance fit manner.

3. The valve according to claim 1, characterized in that, The central connection line of the first ventilation hole (101) and the second ventilation hole (102) is arranged parallel to the longitudinal axis of the first plug body (10).

4. The valve according to claim 1, characterized in that, The second plug body (11) has an open structure at both ends. A partition plate (112) is provided near one end inside the second plug body (11). A third ventilation hole (111) is provided on the side wall of the second plug body (11), and the third ventilation hole (111) is arranged at a position closer to the other end of the second plug body (11) relative to the partition plate (112).

5. The valve according to claim 4, characterized in that, When the second plug body (11) is placed in the cavity of the first plug body (10), the partition plate (112) is arranged in a manner close to the outer end face (103) of the first plug body (10). In the suction state, the third ventilation hole (111) of the second plug body (11) can communicate with the second ventilation hole (102) of the first plug body (10) arranged away from the outer end face (103), and form a channel for gas to enter the cylinder together with the through hole (104) and the first ventilation hole (101). In the exhaust state, the third ventilation hole (111) of the second plug body (11) can communicate with the first ventilation hole (101) of the first plug body (10) arranged close to the outer end face (103) to form a channel for gas to exit the cylinder.

6. The valve according to claim 1, characterized in that, A guiding edge (105) is provided on the side of the first plug body (10) opposite to the planar structure (106). A guiding groove (151) corresponding to the guiding edge (105) is provided in the valve mounting hole of the cylinder (1), so that the first plug body (10) is installed into the valve mounting hole of the cylinder (1) through the cooperation of the guiding edge (105) and the guiding groove (151).

7. The valve according to claim 6, characterized in that, The first plug body (10) is connected to the valve mounting hole in an interference fit manner.

8. The valve according to claim 1, characterized in that, It further includes a first elastic member (12) and a second elastic member (13). Among them, the first elastic member (12) is arranged between the outer end face (103) of the first plug body (10) and the partition plate (112) of the second plug body (11); the second elastic member (13) is arranged between the partition plate (112) and the boss (152) extending outward at the valve installation hole of the cylinder (1).

9. A cylinder, characterized in that, It includes the valve according to any one of claims 1 to 8.

10. The cylinder according to claim 9, characterized in that, It further includes a first valve installation hole (15) and a second valve installation hole (16). The first valve installation hole (15) and the second valve installation hole (16) are arranged along the radial direction of the cylinder (1), and the first valve installation hole (15) and the second valve installation hole (16) are symmetrically arranged on both sides of the slide vane (3) with respect to the slide vane groove.

11. The cylinder according to claim 10, characterized in that, Guide grooves (151) capable of being cooperatively installed with the first plug body (10) are provided on the inner walls of the first valve installation hole (15) and the second valve installation hole (16).

12. A compressor, characterized in that, It includes the cylinder according to any one of claims 9 to 11, and further includes a crankshaft and an electric motor. One end of the crankshaft is connected to the electric motor, and the electric motor can rotate bidirectionally to control the roller (4) to rotate clockwise or counterclockwise through the crankshaft.

13. An air conditioner, characterized in that, It includes the compressor according to claim 12, and further includes a two-way throttle valve (19) and an electric motor control system. Among them, both ends of the two-way throttle valve (19) are respectively connected to the outdoor unit (17) and the indoor unit (18), and are connected to the first valve installation hole (15) and the second valve installation hole (16) of the cylinder (1) through the outdoor unit (17) and the indoor unit (18) by copper pipes (2). The electric motor control system can control the electric motor of the compressor to be in different rotation modes when the air conditioner is in the cooling and heating modes respectively.

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