Exhaust valve cover assembly, compressor and air conditioner

Abstract

The present invention provides an exhaust valve cover assembly, a compressor and an air conditioner. The exhaust valve cover assembly is used to open and close the exhaust hole connected to the compression cylinder of the compressor. The exhaust valve cover assembly includes a rotating valve cover, which rotates synchronously with the rotating shaft of the compressor; the rotating valve cover is provided with an exhaust port; wherein, when the rotating valve cover rotates to the exhaust port and the exhaust hole correspondingly connected, the circulating medium in the compression cylinder is discharged; when the exhaust port and the exhaust hole are staggered, the rotating valve cover closes the exhaust hole. The present invention automatically starts to exhaust whenever the rotating shaft drives the roller and the rotating valve cover to rotate to the exhaust angle, and stops exhausting when the rotating shaft drives the roller and the rotating valve cover to rotate to the exhaust end angle, effectively replacing the existing exhaust valve plate structure; the present invention can reduce the noise generated during the operation of the compressor, has a simple structure and reliable operation, and provides a comfortable user experience and low cost.

Description

Technical Field

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

[0002] The compressor is the core component of the air conditioner's refrigeration function. Its performance and stability are directly related to the efficiency and reliability of the air conditioner's refrigeration. At present, the rotary compressor is the most widely used compressor in the air conditioning industry. Its pump body is mainly composed of an upper bearing, a lower bearing, a cylinder, a rotating shaft, a roller and a sliding vane. During the operation of the compressor, the motor drives the rotating shaft to rotate, and then drives the roller to circulate and rotate in the cylinder. During one rotation of the roller, the suction cavity formed by the cylinder, the roller and the sliding vane continues to increase until it is connected to the suction hole on the cylinder and begins to suck air. When the roller completes a rotation (for example, the roller rotates 36 0 degrees), the volume of the suction chamber reaches its maximum; during the continuous rotation of the roller (for example, during the rotation angle from 360 degrees to 720 degrees), when the suction chamber and the suction hole are no longer connected, the suction stage ends and the compression stage begins. The original suction chamber is transformed into a compression chamber. At this time, with the rotation of the roller, the volume of the compression chamber continues to decrease, and the pressure in the chamber continues to increase until the pressure reaches the exhaust pressure. The high-pressure gas in the compression chamber pushes open the exhaust valve plate above the exhaust hole to start exhausting; so far, the low-temperature and low-pressure gaseous refrigerant is compressed and discharged through the exhaust hole in two rotations of the compressor roller, completing a working cycle.

[0003] However, during the operation of the existing compressor, the exhaust valve plate that controls the opening and closing of the exhaust hole will repeatedly impact the limiter above the exhaust valve plate under the pressure of the high-pressure gas, which not only generates a large mechanical vibration noise, but also continuously bears bending stress and impact stress. The exhaust valve plate is prone to bending, deformation and failure, thereby reducing the service life of the compressor. Against the background of the current development of high-speed and miniaturized compressors, the operating frequency of rotor compressors will become higher and higher in the future. This trend will lead to a further increase in the frequency of exhaust valve plate bending when the compressor is working in the future, and the working environment will become more severe. The requirements for the impact resistance and fatigue resistance of the exhaust valve plate will be greatly improved.

[0004] At present, in the domestic compressor industry, there is little research on the exhaust valve plate materials, preparation processes, etc.; the relevant patents in the industry mainly target the problems of existing exhaust valve plates by adding buffer materials to the limiters or valve plates to reduce impact stress, or by setting magnets to reduce the impact force of the exhaust valve plates during impact through magnetic force, but the resulting incomplete closure of the valve plates or premature closure will affect the refrigeration capacity of the compressor; in addition, there are some patents in the prior art that design the shape of the exhaust valve plates, thereby optimizing the stress conditions of the exhaust valve plates and reducing the failure of the exhaust valve plates; for example: 1. Chinese Patent Authorization Announcement No. CN218325178U "A Refrigerator Compressor Valve Plate Structure" sets an elastic ring around the exhaust hole of the valve plate to reduce the impact force on the exhaust valve plate during operation, but due to its complex structure and high processing difficulty, the stability of the ring depends on the limiter and limit groove inside it, and the reliability is poor; 2. Chinese Patent Authorization Announcement No. CN218325178U "A Refrigerator Compressor Valve Plate Structure" sets an elastic ring around the exhaust hole of the valve plate to reduce the impact force on the exhaust valve plate during operation, but due to its complex structure and high processing difficulty, the stability of the ring depends on the limiter and limit groove inside it, and the reliability is poor; 3. Patent announcement number CN207393426U "Lift limiter, valve plate assembly and compressor for compressor" divides the limiter into a mounting part and a bending part, which can reduce the contact between the valve plate and the limiter, increase the motion force arm, and reduce the resistance of the exhaust valve plate during the rising process. However, since the limiter and the exhaust valve plate are in contact with a boss, stress concentration may occur here during the movement of the exhaust valve plate, resulting in fracture; 3. Chinese patent authorization announcement number CN218816879U "Exhaust valve plate, exhaust valve group and compressor" discloses an exhaust valve plate, an exhaust valve group and a compressor, which mainly provides a concave smooth groove at the connection between the exhaust valve plate mounting section and the connecting section to avoid the occurrence of a folding point when the valve plate is bent, avoid concentrated stress, and thus reduce the risk of fracture. However, it can only alleviate the fracture at the connection between the valve plate mounting section and the connecting section, and does not solve the problem that the exhaust valve plate is fractured due to the back and forth impact between the limiter and the valve plate during the operation of the compressor.

[0005] To sum up, the compressor in the prior art basically relies on the exhaust valve plate to frequently open and close the exhaust hole. The technical solution relying on the exhaust valve plate not only generates large mechanical vibration noise during operation, but also easily causes the exhaust valve plate to bend, deform and fail, thereby failing to guarantee the service life of the compressor, resulting in poor working reliability of the compressor. Summary of the invention

[0006] The present invention provides an exhaust valve cover assembly, a compressor and an air conditioner to solve the problem that the compressor in the prior art relies on the exhaust valve plate to open and close the exhaust hole during the exhaust process, thereby causing the compressor to have high working noise and poor working reliability.

[0007] In order to solve the above-mentioned problem, according to one aspect of the present invention, an exhaust valve cover assembly is provided, which is used for opening and closing the exhaust hole connected to the compression cylinder of the compressor, and the exhaust valve cover assembly includes a rotating valve cover, which rotates synchronously with the rotating shaft of the compressor; the rotating valve cover is provided with an exhaust port; wherein, when the rotating valve cover is rotated until the exhaust port is connected to the exhaust hole correspondingly, the circulating medium in the compression cylinder is discharged; when the exhaust port and the exhaust hole are staggered, the rotating valve cover closes the exhaust hole.

[0008] Furthermore, the exhaust valve cover assembly also includes a flange bearing structure, and the exhaust hole is located on the flange bearing structure; the flange bearing structure is used to seal the compression cylinder.

[0009] Furthermore, the rotating valve cover includes a connecting portion and a sealing portion, wherein the connecting portion is connected to the rotating shaft to rotate synchronously with the rotating shaft; the sealing portion is arranged on the connecting portion to rotate with the connecting portion; wherein the exhaust port is arranged on the sealing portion; when the exhaust port is staggered with the exhaust hole, the sealing portion closes the exhaust hole.

[0010] Furthermore, the flange bearing structure includes a protruding portion and a bearing portion, the bearing portion is arranged on the protruding portion, and the exhaust hole is located on the bearing portion; the rotating shaft passes through the protruding portion and the connecting portion; wherein the sealing portion is covered on the outside of the protruding portion, and the inner wall of the sealing portion is limitedly matched with the protruding portion; the sealing portion and the bearing portion are slidably abutted to form a sliding friction pair.

[0011] Furthermore, an oil storage chamber is provided between the inner wall of the sealing portion and the protruding portion, and the oil storage chamber is connected to the interior of the connecting portion; the interior of the connecting portion is connected to the lubricating oil path on the rotating shaft to transport the lubricating oil to the oil storage chamber; the oil storage chamber is connected to the interior of the sliding friction pair to allow the lubricating oil to lubricate the sliding friction pair; the oil storage chamber is isolated from the exhaust port to prevent the circulating medium from entering the oil storage chamber.

[0012] Furthermore, the sealing portion is provided with a balancing groove, which is spaced apart from the exhaust port and is not connected to the exhaust hole; when the rotating valve cover and the rotating shaft rotate synchronously, the balancing groove is used to maintain the rotation balance of the rotating valve cover.

[0013] Furthermore, the flange bearing structure includes a protruding portion and a bearing portion, the bearing portion is arranged on the protruding portion, and the exhaust hole is located on the bearing portion; the rotating shaft passes through the protruding portion and is connected to the connecting portion; wherein the sealing portion is covered on the outside of the protruding portion, and the inner wall of the sealing portion is spaced apart from the protruding portion to form a silencer chamber; the silencer chamber is connected to the exhaust port, and when the exhaust port is connected to the exhaust hole, the circulating medium enters the silencer chamber, and the silencer chamber reduces the circulation noise by reducing the flow velocity of the circulating medium; the sealing portion and the bearing portion are slidably abutted to form a sliding friction pair.

[0014] Furthermore, the silencer chamber is communicated with the interior of the connection part, and the interior of the connection part is communicated with the lubricating oil path on the rotating shaft to transport the lubricating oil into the silencer chamber; the silencer chamber is communicated with the sliding friction pair so that the lubricating oil lubricates the sliding friction pair.

[0015] Furthermore, the sealing portion has at least one communicating hole communicating with the silencing chamber, and the flow medium entering the silencing chamber is output from the silencing chamber through the communicating hole.

[0016] Furthermore, there are multiple connecting holes, which are arranged in rows and columns at intervals, and the positions of the multiple connecting holes on the sealing part are taken as the connecting area; the connecting area and the exhaust port are respectively projected along the axial direction of the rotating shaft to the same plane perpendicular to the rotating shaft to form a first projection and a second projection, respectively, and the first projection and the second projection are arranged at intervals.

[0017] Furthermore, a balancing groove is provided on the inner wall of the muffler chamber, and the balancing groove is spaced apart from the exhaust port; when the rotating valve cover and the rotating shaft rotate synchronously, the balancing groove is used to maintain the rotation balance of the rotating valve cover.

[0018] Furthermore, a portion of the rotating valve cover is in sliding abutment with a portion of the flange bearing structure to form a sliding friction pair; the sliding friction pair contains lubricating oil and / or lubricating grease for lubrication.

[0019] Furthermore, the rotating valve cover is provided with a balancing groove, which is spaced apart from the exhaust port; when the rotating valve cover rotates synchronously with the rotating shaft, the balancing groove is used to maintain the rotation balance of the rotating valve cover.

[0020] Furthermore, the exhaust port is a fan-shaped port, which extends at a set angle on its arc circumference, so that when the fan-shaped port is connected to the exhaust hole from one side on the circumference and disconnected from the exhaust hole on the other side on the circumference, the rotating valve cover rotates correspondingly at the set angle.

[0021] According to another aspect of the present invention, a compressor is provided, which includes the above-mentioned exhaust valve cover assembly, and the compressor also includes a compression cylinder, a roller and a rotating shaft; the roller is arranged on the rotating shaft and is rotatably arranged in the compression cylinder, and is used to drive the circulating medium in the compression cylinder to move; the compression cylinder has an exhaust channel and an intake channel respectively connected to the interior of the compression cylinder; the exhaust valve cover assembly also includes a flange bearing structure, the exhaust hole is located on the flange bearing structure, and is connected to the exhaust channel; the flange bearing structure is fixedly arranged on the compression cylinder, and is used to seal the compression cylinder.

[0022] Furthermore, a lubricating oil path for circulating lubricating oil is provided on the interior and / or the periphery of the rotating shaft, and a fixing hole is provided on the rotating valve cover, which is fixedly connected to the rotating shaft by a key connection or a pin connection so that the rotating valve cover is fixed on the rotating shaft; a part of the rotating valve cover is slidably abutted with a part of the flange bearing structure to form a sliding friction pair; wherein the fixing hole is connected to the lubricating oil path so that the lubricating oil moves into the sliding friction pair.

[0023] According to another aspect of the present invention, an air conditioner is provided. The air conditioner includes the above-mentioned compressor.

[0024] Applying the technical solution of the present invention, the present invention provides an exhaust valve cover assembly, which is used to open and close the exhaust hole connected to the compression cylinder of the compressor, and the exhaust valve cover assembly includes a rotating valve cover, which rotates synchronously with the rotating shaft of the compressor; the rotating valve cover is provided with an exhaust port; wherein, when the rotating valve cover is rotated until the exhaust port and the exhaust hole are correspondingly connected, the circulating medium in the compression cylinder is discharged; when the exhaust port and the exhaust hole are staggered, the rotating valve cover closes the exhaust hole.

[0025] The present invention opens and closes the exhaust hole connected to the compression cylinder of the compressor by arranging a rotating valve cover to rotate, and arranges the rotating valve cover to rotate synchronously with the rotating shaft of the compressor for driving the roller to rotate, so that whenever the rotating shaft drives the roller and the rotating valve cover to rotate to the exhaust angle, the exhaust will automatically start, and when the rotating shaft drives the roller and the rotating valve cover to rotate to the exhaust end angle, the exhaust will stop, effectively replacing the existing exhaust valve plate structure to control the exhaust timing of the compressor; since the present invention does not require parts such as exhaust valve plates and limiters, there will be no mechanical noise caused by the collision of the exhaust valve plates and the limiters when the compressor is running, which makes the user experience better during use and improves the service life and operating reliability of the compressor; at the same time, the present invention also completely solves the problem that the exhaust valve plates of the existing compressors are affected by the high-frequency impact of the limiters. Impact fatigue causes failure and fracture, which in turn leads to the problem of compressor failure; the present invention structurally avoids the current situation where domestic exhaust valve plates are highly dependent on imported products; the exhaust valve cover assembly proposed in the present invention can rely on high-speed rotation to correspondingly open and close the exhaust holes at high frequencies, which is highly in line with the development trend of high-speed and miniaturization of compressors; the present invention creatively proposes an exhaust valve cover assembly, which effectively replaces the exhaust valve plates used in the exhaust of existing rotary compressors, and solves the problem that the compressor cannot work normally due to the failure of the exhaust valve plates under high-frequency impact during the operation of the compressor; the present invention can reduce the noise generated during the operation of the compressor, has a simple structure and reliable operation, provides a comfortable user experience and is low in cost, and is suitable for large-scale promotion and use in the field of compressors, especially in the field of rotary compressors. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0027] Figure 1 A schematic diagram of the external structure of an exhaust valve cover assembly provided in Embodiment 1 of the present invention is shown;

[0028] Figure 2 Shows Figure 1 A schematic diagram of the internal structure of the exhaust valve cover assembly;

[0029] Figure 3 A schematic diagram of the external structure of an exhaust valve cover assembly provided in Embodiment 2 of the present invention is shown;

[0030] Figure 4 Shows Figure 3 A schematic diagram of the internal structure of the exhaust valve cover assembly;

[0031] Figure 5 A partial structural schematic diagram of a compressor provided by an embodiment of the present invention is shown;

[0032] Figure 6 Shows Figure 5 A schematic diagram of a part of the structure at a left viewing angle when the rotation angle of the rotating shaft is 0°;

[0033] Figure 7 Shows Figure 5 A schematic diagram of a part of the structure at a right viewing angle when the rotation angle of the rotating shaft is 0°;

[0034] Figure 8 Shows Figure 5 A schematic diagram of a part of the structure under a left viewing angle when the rotation angle of the rotating shaft is greater than 0° and less than β angle;

[0035] Fig. 9 Shows Figure 5 A schematic diagram of a part of the structure under a right viewing angle when the rotation angle of the rotating shaft is greater than 0° and less than β angle;

[0036] Fig.10 Shows Figure 5 A schematic diagram of a part of the structure under a right viewing angle when the rotation angle of the rotating shaft is equal to angle β;

[0037] Fig.11 Shows Figure 5 A schematic diagram of a part of the structure under a left observation angle when the rotation angle of the rotating shaft is greater than β and less than β+γ;

[0038] Fig.12 Shows Figure 5A schematic diagram of a part of the structure under the right observation angle when the rotation angle of the rotating shaft is greater than β and less than β+γ;

[0039] Fig.13 Shows Figure 5 A schematic diagram of a part of the structure from a left viewing angle when the rotation angle of the rotating shaft is 360°;

[0040] Fig.14 Shows Figure 5 A schematic diagram of a part of the structure from a right viewing angle when the rotation angle of the rotating shaft is 360°;

[0041] Fig.15 A curve diagram showing the change of the rotation angle of the rotating shaft corresponding to the working process of the compressor provided by an embodiment of the present invention is shown.

[0042] The above drawings include the following reference numerals:

[0043] 10. Exhaust hole;

[0044] 20. Rotating valve cover; 21. Exhaust port; 22. Connecting part; 23. Sealing part; 24. Fixing hole;

[0045] 30. Flange bearing structure; 31. Protruding portion; 32. Bearing portion;

[0046] 40. Sliding friction pair;

[0047] 50. Oil storage chamber;

[0048] 60. Balance tank;

[0049] 70. Silencer;

[0050] 80. communication hole; 81. communication area;

[0051] 90. compression cylinder; 91. air intake passage; 92. first chamber; 93. second chamber;

[0052] 100, roller;

[0053] 110. Rotating shaft;

[0054] 120. Sliding vane structure. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] like Figure 1 As shown, an embodiment of the present invention provides an exhaust valve cover assembly, which is used to open and close the exhaust hole 10 connected to the compression cylinder 90 of the compressor. The exhaust valve cover assembly includes a rotating valve cover 20, which rotates synchronously with the rotating shaft 110 of the compressor; the rotating valve cover 20 is provided with an exhaust port 21; wherein, when the rotating valve cover 20 rotates until the exhaust port 21 is connected to the exhaust hole 10 correspondingly, the circulating medium in the compression cylinder 90 is discharged; when the exhaust port 21 is staggered with the exhaust hole 10, the rotating valve cover 20 closes the exhaust hole 10.

[0057] The present invention opens and closes the exhaust hole 10 connected to the compression cylinder 90 of the compressor by rotating the rotary valve cover 20, and arranges the rotary valve cover 20 to rotate synchronously with the rotating shaft 110 of the compressor for driving the roller 100 to rotate, so that whenever the rotating shaft 110 drives the roller 100 and the rotary valve cover 20 to rotate to the exhaust angle, exhaust will automatically start, and when the rotating shaft 110 drives the roller 100 and the rotary valve cover 20 to rotate to the exhaust end angle, exhaust will stop, effectively replacing the existing exhaust valve plate structure to control the exhaust timing of the compressor; since the present invention does not require parts such as exhaust valve plates and limiters, there will be no mechanical noise caused by the collision of the exhaust valve plates and the limiters when the compressor is running, which makes the user experience better during use and improves the service life and reliability of the compressor; at the same time, the present invention also completely solves the exhaust problems of the existing compressor The problem that the air valve plate fails and breaks due to impact fatigue under the high-frequency impact with the limiter, thereby causing the compressor to malfunction; the present invention structurally avoids the current situation that the domestic exhaust valve plates are highly dependent on foreign imported products; the exhaust valve cover assembly proposed in the present invention can rely on high-speed rotation to correspondingly open and close the exhaust hole 10 at a high frequency, which is highly in line with the development trend of high-speed and miniaturization of compressors; the present invention effectively replaces the exhaust valve plate used in the exhaust of the existing rotary compressor by creatively proposing an exhaust valve cover assembly, and solves the problem that the compressor cannot work normally due to the failure of the exhaust valve plate under high-frequency impact during the operation of the compressor; the present invention can reduce the noise generated during the operation of the compressor, has a simple structure and reliable operation, provides a comfortable user experience and is low cost, and is suitable for large-scale promotion and use in the field of compressors, especially in the field of rotary compressors.

[0058] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the exhaust valve cover assembly further includes a flange bearing structure 30 , and the exhaust hole 10 is located on the flange bearing structure 30 ; the flange bearing structure 30 is used to seal the compression cylinder 90 .

[0059] By providing the flange bearing structure 30 , reliable sealing of the compression cylinder 90 is ensured while reliable operation of the rotating valve cover 20 is ensured.

[0060] It should be noted that: in a specific embodiment of the present invention, the flange bearing structure 30 can adopt a bearing structure commonly used on a compressor, and an exhaust hole 10 is provided on the bearing structure; the bearing structure can be divided into an upper bearing and a lower bearing to respectively install and seal the two ends of the compression cylinder 90, and reliably support the rotating shaft 110.

[0061] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the rotating valve cover 20 includes a connecting portion 22 and a sealing portion 23. The connecting portion 22 is connected to the rotating shaft 110 to rotate synchronously with the rotating shaft 110; the sealing portion 23 is arranged on the connecting portion 22 to rotate with the connecting portion 22; wherein the exhaust port 21 is arranged on the sealing portion 23; when the exhaust port 21 is staggered with the exhaust hole 10, the sealing portion 23 closes the exhaust hole 10.

[0062] Such an arrangement not only ensures the working reliability of the rotary valve cover 20, but also simplifies the structure of the rotary valve cover 20, making it easier to process, shape and install it later.

[0063] like Figure 1 and Figure 2 As shown, in embodiment 1 of the present invention, the flange bearing structure 30 includes a protrusion 31 and a bearing portion 32, the bearing portion 32 is arranged on the protrusion 31, and the exhaust hole 10 is located on the bearing portion 32; the rotating shaft 110 passes through the protrusion 31 and the connecting portion 22; wherein, the sealing portion 23 is covered on the outside of the protrusion 31, and the inner wall of the sealing portion 23 is limitedly matched with the protrusion 31; the sealing portion 23 and the bearing portion 32 are slidably abutted to form a sliding friction pair 40.

[0064] By setting the inner wall of the sealing part 23 and the limiting cooperation with the protrusion 31, the reliability of the rotation of the rotating valve cover 20 is ensured, and by setting the sliding abutment cooperation between the sealing part 23 and the bearing part 32, a sliding friction pair 40 is formed, thereby ensuring the opening and closing of the exhaust hole 10 while also achieving controllable friction force.

[0065] like Figure 1 and Figure 2As shown, in the first embodiment of the present invention, an oil storage chamber 50 is provided between the inner wall of the sealing portion 23 and the protrusion 31, and the oil storage chamber 50 is communicated with the interior of the connecting portion 22; the interior of the connecting portion 22 is communicated with the lubricating oil path on the rotating shaft 110 to transport the lubricating oil to the oil storage chamber 50; the oil storage chamber 50 is communicated with the interior of the sliding friction pair 40 to allow the lubricating oil to lubricate the sliding friction pair 40; the oil storage chamber 50 is isolated from the exhaust port 21 to prevent the circulating medium from entering the oil storage chamber 50.

[0066] By providing the oil storage chamber 50, the lubricating oil in the compressor can be contained and transported, thereby ensuring that the lubricating oil can reliably lubricate the sliding friction pair 40, reducing friction and material loss caused by friction, and effectively improving the wear after long-term work; by isolating the oil storage chamber 50 from the exhaust port 21, the circulating medium will not mix with the lubricating oil, thereby ensuring the purity of the lubricating oil and the circulating medium during the circulation process.

[0067] like Figure 1 and Figure 2 As shown, in the first embodiment of the present invention, the sealing portion 23 has a balancing groove 60, which is spaced apart from the exhaust port 21 and is not connected to the exhaust hole 10; when the rotating valve cover 20 and the rotating shaft 110 rotate synchronously, the balancing groove 60 is used to maintain the rotation balance of the rotating valve cover 20.

[0068] The balancing groove 60 is provided to facilitate processing and forming, and the rotating valve cover 20 with the exhaust port 21 can always maintain rotational balance when rotating.

[0069] like Figure 3 and Figure 4 As shown, in the second embodiment of the present invention, the flange bearing structure 30 includes a protrusion 31 and a bearing portion 32, the bearing portion 32 is arranged on the protrusion 31, and the exhaust hole 10 is located on the bearing portion 32; the rotating shaft 110 passes through the protrusion 31 and is connected with the connecting portion 22; wherein, the sealing portion 23 is covered on the outside of the protrusion 31, and the inner wall of the sealing portion 23 is spaced apart from the protrusion 31 to form a silencer chamber 70; the silencer chamber 70 is connected to the exhaust port 21, and when the exhaust port 21 is connected to the exhaust hole 10, the circulating medium enters the silencer chamber 70, and the silencer chamber 70 reduces the circulation noise by reducing the flow velocity of the circulating medium; the sealing portion 23 and the bearing portion 32 are slidably abutted to form a sliding friction pair 40.

[0070] By setting the sealing part 23 to cover the outside of the protrusion 31, and the inner wall of the sealing part 23 is spaced apart from the protrusion 31, a silencer chamber 70 is effectively formed in the structure, and then the circulation noise is reduced by reducing the flow rate of the circulating medium; that is, the silencer chamber 70 reduces the aerodynamic noise by expanding the volume.

[0071] like Figure 3 and Figure 4 As shown, in the second embodiment of the present invention, the silencer chamber 70 is connected to the interior of the connecting portion 22, and the interior of the connecting portion 22 is connected to the lubricating oil circuit on the rotating shaft 110 to transport the lubricating oil to the silencer chamber 70; the silencer chamber 70 is connected to the sliding friction pair 40 so that the lubricating oil lubricates the sliding friction pair 40.

[0072] This arrangement realizes the accommodation and delivery of the lubricating oil in the compressor, thereby ensuring that the lubricating oil can reliably lubricate the sliding friction pair 40, reducing the friction force.

[0073] like Figure 3 and Figure 4 As shown, in the second embodiment of the present invention, the sealing portion 23 has at least one communicating hole 80 communicating with the silencing chamber 70 , and the flowing medium entering the silencing chamber 70 is discharged from the silencing chamber 70 through the communicating hole 80 .

[0074] By providing at least one communicating hole 80 , reliable output of the circulating medium from the muffler chamber 70 is ensured.

[0075] like Figure 3 and Figure 4 As shown, in the second embodiment of the present invention, there are multiple connecting holes 80, and the multiple connecting holes 80 are arranged in rows and columns at intervals, and the positions of the multiple connecting holes 80 on the sealing portion 23 are the connecting area 81; the connecting area 81 and the exhaust port 21 are respectively projected along the axial direction of the rotating shaft 110 onto the same plane perpendicular to the rotating shaft 110 to form a first projection and a second projection, respectively, and the first projection and the second projection are arranged at intervals.

[0076] By setting the first projection and the second projection at an interval, the circulating medium entering from the exhaust port 21 will not directly flow out from the connecting area 81 along the shortest axial distance of the rotating shaft 110, thereby increasing the circulation distance of the circulating medium from entering the silencer chamber 70 to moving out of the silencer chamber 70, thereby further improving the speed reduction and silencing effect of the silencer chamber 70.

[0077] like Figure 4 As shown, in the second embodiment of the present invention, a balancing groove 60 is provided on the inner wall of the muffler chamber 70, and the balancing groove 60 is spaced apart from the exhaust port 21; when the rotating valve cover 20 and the rotating shaft 110 rotate synchronously, the balancing groove 60 is used to maintain the rotation balance of the rotating valve cover 20.

[0078] The balancing groove 60 is provided to facilitate processing and forming, and the rotating valve cover 20 with the exhaust port 21 can always maintain rotational balance when rotating.

[0079] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a portion of the rotating valve cover 20 is slidably abutted against a portion of the flange bearing structure 30 to form a sliding friction pair 40; the sliding friction pair 40 contains lubricating oil and / or lubricating grease for lubrication.

[0080] This arrangement ensures that the sliding friction force in the sliding friction pair 40 is small, which facilitates the high-speed and smooth rotation of the rotating valve cover 20.

[0081] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the rotary valve cover 20 also has a balancing groove 60, which is spaced apart from the exhaust port 21; when the rotary valve cover 20 rotates synchronously with the rotating shaft 110, the balancing groove 60 is used to maintain the rotation balance of the rotary valve cover 20. By providing the balancing groove 60, the rotary valve cover 20 with the exhaust port 21 can always maintain the rotation balance when rotating.

[0082] It should be noted that: in a specific embodiment of the present invention, the specific position and size of the balancing groove 60 can be flexibly set according to the test results of the rotation balance bench test to adapt to the rotating valve cover 20 with different sizes and processing tolerances.

[0083] like Figure 1 and Figure 3 As shown, the exhaust port 21 is a fan-shaped port, which extends at a set angle on its arc circumference, so that when the fan-shaped port is connected to the exhaust hole 10 from one side on the circumference and disconnected from the exhaust hole 10 on the other side on the circumference, the rotating valve cover 20 rotates correspondingly at the set angle.

[0084] By setting the fan-shaped opening, the rotating valve cover 20 has an opening period of a set angle, and by setting the circumferential extension angle of the fan-shaped opening (angle γ in the figure), when the shaft rotates to this angle range, the exhaust port 21 begins to pass the circulating medium, thereby achieving precise control of the compressor exhaust process.

[0085] like Figure 5 As shown, the present invention also provides a compressor, which includes the above-mentioned exhaust valve cover assembly, and the compressor also includes a compression cylinder 90, a roller 100 and a rotating shaft 110; the roller 100 is arranged on the rotating shaft 110 and is rotatably arranged in the compression cylinder 90, for driving the flow medium in the compression cylinder 90 to move; the compression cylinder 90 has an exhaust channel and an intake channel 91 respectively connected to the interior of the compression cylinder 90; the exhaust valve cover assembly also includes a flange bearing structure 30, the exhaust hole 10 is located on the flange bearing structure 30, and is connected to the exhaust channel; the flange bearing structure 30 is fixedly arranged on the compression cylinder 90, for sealing the compression cylinder 90.

[0086] It is worth mentioning that during the operation of the existing rotary compressor, the exhaust valve plate repeatedly impacts the limiter under the action of high-pressure gas, generating a large mechanical vibration noise, and continuously bears bending stress and impact stress, which is prone to bending deformation failure and reduced service life; at the same time, with the development trend of high-speed and miniaturization of compressors, the frequency of exhaust valve plate impacts will further increase in the future, the working environment will become more severe, and the requirements for the exhaust valve plate's impact resistance and fatigue resistance will be greatly improved; the compressor proposed in the present invention has been redesigned structurally, which solves the problem that the exhaust valve plate structure will limit the high-speed and miniaturization development of rotary compressors in the future.

[0087] The compressor proposed in the present invention will no longer have the problem of reduced compressor service life due to exhaust valve failure during use; under the research and development trend of high-speed compressors, the impact frequency of the exhaust valve will be further improved, and the requirements for its performance will be higher, and the exhaust valve cover assembly without exhaust valve plates designed in the present invention no longer needs to consider the exhaust valve plate problem of high-speed compressors; the compressor proposed in the present invention breaks through the technical monopoly and bottleneck of exhaust valve plates, realizes the compressor structure without exhaust valve plates, and avoids the serious technical restriction risks that the compressor manufacturing industry will face when the international situation changes, raw material supply is interrupted, etc.; the compressor proposed in the present invention has no impact between the exhaust valve plate and the limiter during operation, the working noise is greatly reduced, and the user experience is better.

[0088] It should be noted that: the exhaust passage can be a large opening in the axial direction of the compression cylinder 90 (for example: a window for installing the internal structure of the compression cylinder and for the shaft to pass through); the compressor can be a rotor compressor structure.

[0089] In a specific embodiment of the present invention, the rotating shaft 110 is composed of a short axis portion, an eccentric portion and a long axis portion to form a crankshaft structure; a pin hole is provided on the long axis portion, and the pin hole is connected to the rotating valve cover 20 by a pin connection. The pin hole on the long axis of the rotating shaft 110 is connected to the lubricating oil flow channel inside the rotating shaft 110.

[0090] like Figure 6 , Figure 8 , Fig.11 and Fig.13 As shown, in a specific embodiment of the present invention, the compressor also includes a vane structure 120, which is slidably disposed in the compression cylinder 90; wherein the roller 100 and the vane structure 120 cooperate to divide the interior of the compression cylinder 90 into a first chamber 92 and a second chamber 93; through the rotation of the roller 100, the volumes of the first chamber 92 and the second chamber 93 are driven to change oppositely (the total volume of the first chamber 92 and the second chamber 93 remains unchanged) to compress the circulating medium or discharge the circulating medium.

[0091] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the interior and / or the periphery of the rotating shaft 110 is provided with a lubricating oil path for circulating lubricating oil, and the rotating valve cover 20 is provided with a fixing hole 24, which is fixedly connected to the rotating shaft 110 by a key connection or a pin connection so that the rotating valve cover 20 is fixed on the rotating shaft 110; a part of the rotating valve cover 20 is slidably abutted with a part of the flange bearing structure 30 to form a sliding friction pair 40; wherein the fixing hole 24 is connected to the lubricating oil path so that the lubricating oil moves into the sliding friction pair 40.

[0092] By setting the fixing hole 24, the rotating valve cover 20 can be fixedly connected to the rotating shaft 110 by key connection or pin connection, which actually solves the problem of the rotating valve cover 20 reliably rotating following the rotating shaft 110. The rotating valve cover 20 designed by the present invention is connected to the rotating shaft 110 by a pin, and rotates coaxially with the rotating shaft 110 at the same angular velocity, so that the exhaust port 21 of the rotating valve cover 20 can be connected with the exhaust hole 10 of the upper bearing during the relative movement between the rotating valve cover 20 and the upper bearing (i.e., the flange bearing structure 30) to smoothly exhaust. In addition, by exhausting the air through the rotating valve cover 20, there is no need to process other additional exhaust structures on the upper bearing, and there is no need for parts such as exhaust valve plates and limiters, which reduces the overall parts of the compressor and reduces the difficulty of processing and installation.

[0093] The present invention also provides an air conditioner, which comprises the above-mentioned compressor.

[0094] It should be noted that in order to facilitate the demonstration of the continuous working process of the compressor, Figure 5 Based on the left and right viewing angles shown in Figures 6 to 14 The change process is set as follows: the roller 100 rotates counterclockwise in the compression cylinder 90 from the left viewing angle, and accordingly, the rotating valve cover 20 rotates clockwise from the right viewing angle; wherein, Figure 6 and Figure 7 As a group, Figure 6 Shows Figure 5 A schematic diagram of a part of the structure at a left viewing angle when the rotation angle of the rotating shaft is 0°; Figure 7 Shows Figure 5 A schematic diagram of a part of the structure at a right viewing angle when the rotation angle of the rotating shaft is 0°; Figure 8 and Fig. 9 As a group, Figure 8 Shows Figure 5 A schematic diagram of a part of the structure under a left viewing angle when the rotation angle of the rotating shaft is greater than 0° and less than β angle; Fig. 9 Shows Figure 5A schematic diagram of a part of the structure under a right viewing angle when the rotation angle of the rotating shaft is greater than 0° and less than β angle; Fig.10 Shows Figure 5 A schematic diagram of a part of the structure under a right viewing angle when the rotation angle of the rotating shaft is equal to angle β; Fig.11 and Fig.12 For a group, Fig.11 Shows Figure 5 A schematic diagram of a part of the structure under a left observation angle when the rotation angle of the rotating shaft is greater than β and less than β+γ; Fig.12 Shows Figure 5 A schematic diagram of a part of the structure under the right observation angle when the rotation angle of the rotating shaft is greater than β and less than β+γ; Fig.13 and Fig.14 For a group, Fig.13 Shows Figure 5 A schematic diagram of a part of the structure from a left viewing angle when the rotation angle of the rotating shaft is 360°; Fig.14 Shows Figure 5 The schematic diagram of the partial structure in the right observation angle when the shaft rotates 360°.

[0095] Now, the first embodiment of the present invention is described in detail as follows: Figure 1 and Figure 2 As shown, the exhaust valve cover assembly in the inverted "T" shape of this embodiment is composed of two parts: a rotating valve cover 20 and a flange bearing structure 30;

[0096] The rotating valve cover 20 covers the flange bearing structure 30, and the rotating valve cover 20 is provided with an exhaust port 21, and the exhaust port 21 is sized to completely cover the exhaust hole 10 in the flange bearing structure 30, so that the compressed high-pressure gaseous refrigerant can pass through the exhaust hole 10 smoothly without hindrance during the exhaust stage; at the same time, the rotating valve cover 20 is provided with a fixing hole 24, through which the rotating valve cover 20 can be fixed on the rotating shaft 110 and perform a coaxial and angular velocity circular rotation with the rotating shaft 110;

[0097] For ease of understanding, Figure 6 , Figure 8 , Fig.11 and Fig.13The moving state of the roller 100 driven by the rotating shaft 110 in the cylinder during the operation of the compressor is shown. The angle between the axis of the rotating shaft 110 and the eccentric circle center and the axis of the rotating shaft 110 and the direction of the vane groove where the vane structure 120 is located is set as θ, and the operation of the compressor is divided into a cycle in which θ rotates from 0° to 360°; in an ideal state, when θ is 0° or 360°, the intake stage begins or the exhaust stage is completed, but this cannot be achieved due to factors such as the processing error of the exhaust port 21 in the actual structure; therefore, the angle of θ when the intake stage begins is set to α, and the angle of θ when the exhaust begins is set to β, and γ is the extension angle of the fan-shaped exhaust port 21 in the circumferential direction; (for example: α> 0°, β < 360°-γ);

[0098] like Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, when θ gradually increases from 0° to α, the first chamber 92 (serving as the suction chamber 302) formed by the compression cylinder 90, the roller 100 and the sliding vane structure 120 at this stage is not connected with the air inlet channel 91. At this time, the first chamber 92 at this stage is in a negative pressure state with a gradually increasing volume; and the second chamber 93 gradually decreases in volume as it is closed from the air inlet channel 91, serving as a compression chamber to compress the circulating medium;

[0099] like Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, when θ gradually increases from angle α to angle β, the first cavity 92 is connected with the air inlet passage 91 and its cavity volume gradually increases as the rotating shaft 110 rotates, sucking in the gaseous refrigerant to be compressed; the cavity volume of the second cavity 93 gradually decreases, compressing the gaseous refrigerant therein, and the pressure gradually increases;

[0100] like Fig.10 As shown, when θ reaches angle β, the gaseous refrigerant in the second chamber 93 has been compressed into a suitable high-pressure gaseous refrigerant. At this time, the exhaust port 21 of the rotating valve cover 20 is connected to the exhaust hole 10 of the flange bearing structure 30, and the high-pressure gaseous refrigerant begins to be discharged. The second chamber 93 is transformed from a compression chamber to an exhaust chamber; at this time, the first chamber 92 continues to inhale the gaseous refrigerant to be compressed through the air inlet channel 91;

[0101] like Fig.11 , Fig.12 As shown, when θ gradually increases from angle β to angle β+γ, the first chamber 92 continues to inhale the gaseous refrigerant to be compressed through the air inlet channel 91; the second chamber 93 discharges the high-pressure gaseous refrigerant in the chamber through the exhaust hole 10, and when θ reaches angle β+γ, the rotating valve cover 20 has rotated past angle γ, the exhaust port 21 is no longer connected to the exhaust hole 10, and the exhaust stage of the second chamber 93 ends;

[0102] When θ gradually increases from β+γ to 360°, the first chamber 92 continues to inhale the gaseous refrigerant to be compressed through the air inlet channel 91; a small amount of gaseous refrigerant may still be continuously compressed in the second chamber 93, and the chamber is under positive pressure at this time;

[0103] When θ is 360°, the first cavity 92 reaches its maximum value and is filled with the gaseous refrigerant to be compressed. At this time, the first cavity 92 will become a compression cavity in the next cycle to compress the gaseous refrigerant.

[0104] It can be seen from the working process of the above compressor that the pump body will be in the exhaust state when and only when the rotating shaft 110 drives the roller 100 to rotate within the angle range of β to β+γ; in terms of structure, the rotating valve cover 20 is fixed on the rotating shaft 110 through the fixing hole 24 and performs a coaxial and angularly speed circular rotation with the rotating shaft 110, and the exhaust port 21 is a fan-shaped through groove with an angle of γ and a center of the rotating shaft 110 on the rotating valve cover 20;

[0105] At the same time, in order to ensure that the rotating valve cover 20 meets the requirements of stable operation during the rotation of the rotating shaft 110, a balancing groove 60 is designed on the opposite side of the exhaust port 21. The balancing groove 60 is a fan-shaped groove of a different size from the exhaust port 21 and will not be connected to the exhaust hole 10 of the flange bearing structure 30. The balancing groove 60 can adjust the center of gravity of the rotating valve cover 20 to be coaxial with the rotating shaft 110 of the compressor, thereby avoiding severe vibration of the pump body caused by the movement of the center of gravity during the rotation of the rotating valve cover 20.

[0106] In addition, an oil storage chamber 50 is designed between the rotating valve cover 20 and the flange bearing structure 30 to ensure that the sliding friction pair between the rotating valve cover 20 and the flange bearing structure 30 can be fully lubricated during the rotation process; the oil storage chamber 50 is located below the fixing hole 24. Since the fixing hole 24 is connected to the central oil hole inside the rotating shaft 110, the lubricating oil can be brought into the oil storage chamber 50 under the action of centrifugal force, and then enter the surface of the parts that rub against each other, so that the friction surface can be separated by the oil film, thereby reducing the friction work, friction heat and material wear between the rotating valve cover 20 and the flange bearing structure 30, and improving reliability and durability.

[0107] The second embodiment of the present invention is now described in detail as follows: Figure 3 and Figure 4 As shown, the exhaust valve cover assembly in the second embodiment in the shape of a "convex" character is also composed of two parts: a rotating valve cover 20 and a flange bearing structure 30;

[0108] The working principle of the rotary valve cover 20 and the structure of the flange bearing structure 30 in the second embodiment are not much different from those in the first embodiment; the main difference lies in the internal structure design of the rotary valve cover 20; the rotary valve cover 20 in the second embodiment has an exhaust port 21, a balancing groove 60, a fixing hole 24, a muffler cavity 70 and a connecting hole 80;

[0109] The exhaust port 21 and the balance groove 60 on the rotating valve cover 20 are located in the space between the rotating valve cover 20 and the flange bearing structure 30. In the exhaust stage of the compressor, after the exhaust port 21 is connected with the exhaust hole 10, the high-pressure gaseous refrigerant enters the muffler chamber 70 through the exhaust hole 10 and the exhaust port 21, and is discharged into the shell of the compressor through the connecting hole 80; the exhaust port 21 can be a fan-shaped groove with an angle of γ, located at the inner end of the rotating valve cover 20, and can be connected with the exhaust hole 10 of the flange bearing structure 30;

[0110] In the second embodiment, the balancing groove 60 is similar to that in the first embodiment, and is a fan-shaped groove of a different size from the exhaust port 21, and is located in the middle of the inner side of the rotating valve cover 20, and is not directly connected to the exhaust hole 10 of the flange bearing structure 30; In the second embodiment, the fixing hole 24 is the same as that in the first embodiment, and the rotating valve cover 20 can be connected to the rotating shaft 110 through a pin and can follow the rotating shaft 110 to perform a coaxial and angular velocity circular rotation;

[0111] In the second embodiment, the beneficial effect of using the rotating valve cover 20 is the same as that of the first embodiment, and the mechanical noise caused by the impact between the exhaust valve plate and the limiter is eliminated. In addition, the designed silencer chamber 70 can reduce the gas flow rate after the high-pressure gaseous refrigerant passes through the exhaust hole 10, reduce the generated gas dynamic noise, and play a role in silencing and reducing noise; at the same time, since the silencer chamber 70 is also located below the fixing hole 24, the lubricating oil in the rotating shaft 110 can be brought to the sliding friction pair through the action of centrifugal force, which plays a role in reducing the wear between the friction pair of the rotating valve cover 20 and the flange bearing structure 30.

[0112] The specific working process and principle of an embodiment of the present invention are now described in detail as follows: Fig.15 As shown in FIG. 1 , when 0<θ<30°, the first cavity 92 and the second cavity 93 are not connected to the intake passage 91 to form a single space, and the suction and exhaust work is not performed; the exhaust port 21 in the rotating valve cover 20 is not connected to the exhaust hole 10; when θ=30°, the roller 100 and the compression cylinder 90 form a single space (the first cavity 92 or the second cavity 93) connected to the suction port, Figure 6 Beginning to evolve Fig.13 As shown, the first cavity 92 becomes the suction cavity, and the second cavity 93 becomes the compression cavity; when 30°<θ<360°, the suction cavity continues to expand, and the suction process is carried out at the same time ( Fig.15The middle grey dotted line process), the compression chamber is compressed; at this time, the exhaust port 21 in the rotating valve cover 20 is not connected with the exhaust hole 10; when θ=210°, the compression chamber completes the compression task and turns into the exhaust chamber, at this time, the exhaust port 21 begins to communicate with the exhaust hole 10 to exhaust; when 210°<θ<360°, the suction chamber continues to expand, and the suction process is carried out at the same time ( Fig.15 The exhaust chamber is exhausted, and the exhaust port 21 in the rotating valve cover 20 is connected to the exhaust hole 10; when θ=360°, the exhaust chamber is exhausted, the exhaust chamber disappears, and the connection between the exhaust port 21 and the exhaust hole 10 ends, and the next repetitive process begins, forming the overall working cycle of the compressor. In addition, it should be noted that: Fig.15 The above angle data are all data in one embodiment, and the actual angles corresponding to different actions can be flexibly changed.

[0113] In summary, the present invention provides an exhaust valve cover assembly, a compressor and an air conditioner. The present invention opens and closes the exhaust hole 10 connected to the compression cylinder 90 of the compressor by rotating the rotary valve cover 20, and the rotary valve cover 20 is synchronously rotated with the rotating shaft 110 of the compressor for driving the roller 100 to rotate, so that whenever the rotating shaft 110 drives the roller 100 and the rotary valve cover 20 to rotate to the exhaust angle, exhaust will automatically start, and when the rotating shaft 110 drives the roller 100 and the rotary valve cover 20 to rotate to the exhaust end angle, exhaust will stop, effectively replacing the existing exhaust valve plate structure to control the exhaust timing of the compressor; since the present invention does not require parts such as exhaust valve plates and limiters, there will be no mechanical noise caused by the collision of the exhaust valve plates and the limiters when the compressor is running, which makes the user experience better during use and improves the service life and reliability of the compressor; at the same time, the present invention The invention also thoroughly solves the problem that the exhaust valve plates of existing compressors fail and break due to impact fatigue under high-frequency impact with the limiter, thereby causing compressor failure; the present invention structurally avoids the current situation that domestic exhaust valve plates are highly dependent on imported products from abroad; the exhaust valve cover assembly proposed in the present invention can rely on high-speed rotation to open and close the exhaust hole 10 at a corresponding high frequency, which is highly in line with the development trend of high-speed and miniaturization of compressors; the present invention effectively replaces the exhaust valve plates used in the exhaust of existing rotary compressors by creatively proposing an exhaust valve cover assembly, and solves the problem that the compressor cannot work normally due to the failure of the exhaust valve plates under high-frequency impact during the operation of the compressor; the present invention can reduce the noise generated during the operation of the compressor, has a simple structure and reliable operation, provides a comfortable user experience and is low cost, and is suitable for large-scale promotion and use in the field of compressors, especially in the field of rotary compressors.

[0114] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0115] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0116] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0117] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0118] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0119] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An exhaust valve cover assembly, It is characterized in that The exhaust valve cover assembly is used to open and close an exhaust hole (10) connected to a compression cylinder (90) of a compressor, and the exhaust valve cover assembly comprises a rotating valve cover (20), wherein the rotating valve cover (20) rotates synchronously with a rotating shaft (110) of the compressor; the rotating valve cover (20) is provided with an exhaust port (21); when the rotating valve cover (20) rotates until the exhaust port (21) is correspondingly connected to the exhaust hole (10), the circulating medium in the compression cylinder (90) is discharged; when the exhaust port (21) is offset from the exhaust hole (10), the rotating valve cover (20) closes the exhaust hole (10); The exhaust valve cover assembly further comprises a flange bearing structure (30), the exhaust hole (10) being located on the flange bearing structure (30); the flange bearing structure (30) being used to seal the compression cylinder (90); The rotary valve cover (20) comprises a connecting portion (22) and a sealing portion (23); the connecting portion (22) is connected to the rotating shaft (110) so as to rotate synchronously with the rotating shaft (110); the sealing portion (23) is arranged on the connecting portion (22) so as to rotate along with the connecting portion (22); wherein the exhaust port (21) is arranged on the sealing portion (23); when the exhaust port (21) is offset from the exhaust hole (10), the sealing portion (23) closes the exhaust hole (10); The flange bearing structure (30) comprises a protruding portion (31) and a bearing portion (32), the bearing portion (32) being arranged on the protruding portion (31), and the exhaust hole (10) being located on the bearing portion (32); the rotating shaft (110) passes through the protruding portion (31) and the connecting portion (22); The sealing portion (23) is covered on the outside of the protruding portion (31), and the inner wall of the sealing portion (23) is limitedly matched with the protruding portion (31); the sealing portion (23) and the bearing portion (32) are slidably abutted to form a sliding friction pair (40); an oil storage cavity (50) is provided between the inner wall of the sealing portion (23) and the protruding portion (31), and the oil storage cavity (50) is communicated with the inside of the connecting portion (22); the inside of the connecting portion (22) is communicated with the lubricating oil path on the rotating shaft (110) so as to transport the lubricating oil to the oil storage cavity (50); the oil storage cavity (50) is communicated with the inside of the sliding friction pair (40) so as to allow the lubricating oil to lubricate the sliding friction pair (40); the oil storage cavity (50) is isolated from the exhaust port (21) so as to prevent the circulating medium from entering the oil storage cavity (50); Alternatively, the sealing portion (23) is wrapped around the outside of the protruding portion (31), and the inner wall of the sealing portion (23) is spaced apart from the protruding portion (31) to form a silencer chamber (70); the silencer chamber (70) is connected to the exhaust port (21), and when the exhaust port (21) is connected to the exhaust hole (10), the circulating medium enters the silencer chamber (70), and the silencer chamber (70) reduces the circulation noise by reducing the flow rate of the circulating medium; the sealing portion (23) and the bearing portion (32) are slidably abutted to form a sliding friction pair (40).

2. The exhaust valve cover assembly according to claim 1, It is characterized in that Under the condition that the inner wall of the sealing portion (23) and the protruding portion (31) are limitedly matched: the sealing portion (23) is provided with a balancing groove (60), the balancing groove (60) is spaced apart from the exhaust port (21) and is not connected to the exhaust hole (10); when the rotating valve cover (20) and the rotating shaft (110) rotate synchronously, the balancing groove (60) is used to maintain the rotation balance of the rotating valve cover (20).

3. The exhaust valve cover assembly according to claim 1, It is characterized in that The silencer chamber (70) is communicated with the interior of the connecting portion (22), and the interior of the connecting portion (22) is communicated with the lubricating oil path on the rotating shaft (110) so as to transport the lubricating oil into the silencer chamber (70); the silencer chamber (70) is communicated with the sliding friction pair (40) so as to allow the lubricating oil to lubricate the sliding friction pair (40).

4. The exhaust valve cover assembly according to claim 3, It is characterized in that The sealing portion (23) has at least one communicating hole (80) communicating with the silencing chamber (70), and the circulating medium entering the silencing chamber (70) is discharged from the silencing chamber (70) through the communicating hole (80).

5. The exhaust valve cover assembly according to claim 4, It is characterized in that There are a plurality of communicating holes (80), and the plurality of communicating holes (80) are arranged in rows and columns at intervals, with the positions of the plurality of communicating holes (80) on the sealing portion (23) being a communicating area (81); the communicating area (81) and the exhaust port (21) are projected along the axial direction of the rotating shaft (110) onto the same plane perpendicular to the rotating shaft (110) to form a first projection and a second projection, respectively, and the first projection and the second projection are arranged at intervals.

6. The exhaust valve cover assembly according to claim 1, It is characterized in that The inner wall of the muffler chamber (70) is provided with a balancing groove (60), and the balancing groove (60) is arranged at a distance from the exhaust port (21); when the rotating valve cover (20) and the rotating shaft (110) rotate synchronously, the balancing groove (60) is used to maintain the rotation balance of the rotating valve cover (20).

7. The exhaust valve cover assembly according to claim 1, It is characterized in that A portion of the rotating valve cover (20) is slidably abutted against a portion of the flange bearing structure (30) to form a sliding friction pair (40); the sliding friction pair (40) contains lubricating oil and / or lubricating grease for lubrication.

8. The exhaust valve cover assembly according to claim 1, It is characterized in that The rotary valve cover (20) also has a balancing groove (60), and the balancing groove (60) is arranged at a distance from the exhaust port (21); when the rotary valve cover (20) and the rotating shaft (110) rotate synchronously, the balancing groove (60) is used to maintain the rotation balance of the rotary valve cover (20).

9. The exhaust valve cover assembly according to claim 1, It is characterized in that The exhaust port (21) is a fan-shaped port, and the fan-shaped port extends at a set angle in the circumferential direction of the circular arc, so that when the fan-shaped port is connected with the exhaust hole (10) from one side in the circumferential direction to the other side in the circumferential direction and disconnected from the exhaust hole (10), the rotating valve cover (20) rotates correspondingly to the set angle.

10. A compressor, It is characterized in that The compressor comprises an exhaust valve cover assembly as claimed in any one of claims 1 to 9, and further comprises a compression cylinder (90), a roller (100) and a rotating shaft (110); the roller (100) is arranged on the rotating shaft (110) and is rotatably arranged in the compression cylinder (90) for driving the circulating medium in the compression cylinder (90) to move; the compression cylinder (90) has an exhaust channel and an intake channel (91) respectively connected to the interior of the compression cylinder (90); the exhaust hole (10) is connected to the exhaust channel; the flange bearing structure (30) is fixedly arranged on the compression cylinder (90) for sealing the compression cylinder (90).

11. The compressor according to claim 10, It is characterized in that The interior and / or the periphery of the rotating shaft (110) is provided with a lubricating oil path for circulating lubricating oil, and the rotating valve cover (20) is provided with a fixing hole (24), and the fixing hole (24) is fixedly connected to the rotating shaft (110) by a key connection or a pin connection, so that the rotating valve cover (20) is fixed to the rotating shaft (110); a part of the rotating valve cover (20) is slidably abutted with a part of the flange bearing structure (30) to form a sliding friction pair (40); wherein the fixing hole (24) is connected to the lubricating oil path, so that the lubricating oil moves into the sliding friction pair (40).

12. An air conditioner, It is characterized in that The air conditioner comprises the compressor according to any one of claims 10 to 11.

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