Compressor and air conditioner

Abstract

The present invention provides a compressor and an air conditioner, comprising: a high-low pressure separation plate and an exhaust oil separation silencer structure, wherein the exhaust oil separation silencer structure is arranged on the upper end of the high-low pressure separation plate, a first exhaust port is arranged on the high-low pressure separation plate, and a silencer cavity capable of silencer is formed between the exhaust oil separation silencer structure and the high-low pressure separation plate; the exhaust oil separation silencer structure comprises an outer ring located radially outside; the exhaust oil separation silencer structure also comprises an inner ring located radially inside the outer ring, the cavity enclosed inside the inner ring is connected to the first exhaust port, so that the gas discharged from the first exhaust port first enters the inner ring and then enters the space between the inner ring and the outer ring; at least one protrusion is arranged on the inner side wall of the outer ring, and the protrusion protrudes radially inside. According to the present invention, the silencer structure and the oil return structure are effectively arranged inside the compressor, which can effectively improve the oil separation and noise reduction effects, improve the user performance and comfort, and do not need to arrange complex pipeline structures, etc., and the cost is low.

Description

Technical Field

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

[0002] Scroll compressors have the advantages of simple structure, small size, light weight, low noise, high mechanical efficiency and smooth operation. Scroll compressors are complex machines that run at high speeds. Ensuring adequate lubrication of moving parts such as compressor crankshafts, bearings, and scroll disks is a basic requirement for maintaining normal operation of the machine. However, due to negligence in the design, construction, and maintenance of refrigeration systems, it is common for compressors to lack oil, oil coking and deterioration, return dilution, refrigerant flushing, and the use of inferior lubricants to cause insufficient lubrication of moving parts. Lack of oil and insufficient lubrication can cause wear or scratches on the bearing surface, and in severe cases can cause shaft seizure, scroll disk wear, and fracture accidents.

[0003] The scroll compressor is a special air pump. When a large amount of refrigerant gas is discharged, a small amount of lubricating oil is also carried away (called oil leakage). Oil leakage from compressor exhaust is inevitable, but the speed of oil leakage varies. There is about 0.5-3% lubricating oil in the compressor exhaust. The compressor can run for more than ten minutes without oil return. If the lubricating oil discharged from the compressor does not return, the compressor will be short of oil.

[0004] There are two ways to return oil from the compressor, one is to return oil through the oil separator, and the other is to return oil through the air return pipe. The oil separator is installed on the compressor exhaust pipe, which can generally separate 50-90% of the oil leakage, greatly reducing the amount of oil entering the system pipeline, thereby effectively extending the oil-free operation time, but the pipeline is complex, the effect is poor, and the cost is very high. For cold storage refrigeration systems with particularly long pipelines, full liquid ice making systems, and freeze-drying equipment with very low temperatures, there are common technical difficulties in the industry when there is no oil return or very little oil return for more than ten minutes or even dozens of minutes after startup. Poorly designed systems will cause the compressor oil pressure to be too low and the compressor will be damaged when shut down.

[0005] In addition, while completing its intended function (compressing gas), the scroll compressor will inevitably produce additional outputs, mainly vibration and noise. The performance status of each working component of the scroll compressor is reflected in vibration and noise through a certain transmission path. Therefore, using appropriate methods to analyze vibration and noise signals can effectively understand the working status of the internal components of the compressor, and then determine the working characteristics of the scroll compressor. In addition, based on the analysis results, designers can conduct secondary design of components that cause greater vibration and noise, providing a reliable theoretical basis for improving the performance and noise of the scroll compressor.

[0006] The noise of scroll compressor mainly includes mechanical noise, electromagnetic noise, air noise and liquid noise, etc. Among them, air noise is caused by air flow pulsation and gas gap leakage, and is transmitted to space through air and shell; liquid noise is caused by refrigerant, lubricating oil jet and cavitation, and is transmitted to space through liquid and shell. The largest part of compressor noise is the noise of mechanical fluid compression, that is, exhaust. Solving this part of the noise problem can well meet the noise and vibration needs of customers.

[0007] Since the scroll compressor in the prior art produces relatively loud noise and has a relatively high oil discharge rate during operation, the industry currently generally adopts a method of installing a pipeline silencer and an oil separator outside the compressor on the air-conditioning system to solve the problem. However, there are technical problems such as poor oil separation and silencer effects, complex pipelines, and high costs. Therefore, the present invention studies and designs a compressor and an air conditioner. Summary of the invention

[0008] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that the compressor is silenced by arranging a pipeline silencer outside the compressor but the silencer effect is poor, thereby providing a compressor and an air conditioner.

[0009] In order to solve the above problems, the present invention provides a compressor, comprising:

[0010] A high-low pressure separation plate and an exhaust oil silencer structure, wherein the exhaust oil silencer structure is arranged at the upper end of the high-low pressure separation plate, a first exhaust port is arranged on the high-low pressure separation plate, and a silencer cavity capable of silencing is formed between the exhaust oil silencer structure and the high-low pressure separation plate; and the exhaust oil silencer structure includes an outer ring located radially outward;

[0011] The exhaust oil silencer structure also includes an inner ring located radially inside the outer ring, and the cavity enclosed inside the inner ring is connected to the first exhaust port, so that the gas discharged from the first exhaust port first enters the inner ring and then enters the space between the inner ring and the outer ring; and / or, at least one protrusion is provided on the inner side wall of the outer ring, and the protrusion protrudes radially inward.

[0012] Preferably, there are multiple protrusions, which are spaced apart and distributed along the circumferential direction on the inner side wall of the outer ring; and / or, the cross section of the protrusion is a semicircular structure.

[0013] Preferably, the plurality of protrusions are evenly distributed in the circumferential direction.

[0014] Preferably, at least one inner rib is provided on the inner side wall of the inner ring, and the inner rib protrudes radially inward.

[0015] Preferably, the inner rib is a plate-like structure; and / or, there are multiple inner ribs, which are spaced apart and distributed along the circumferential direction on the inner side wall of the outer ring.

[0016] Preferably, the cross section of the inner rib is a triangular structure; and / or the plurality of inner ribs are evenly distributed in the circumferential direction.

[0017] Preferably, the exhaust oil silencer structure includes a connecting plate, which connects the inner ring and the outer ring into one; and / or, a threaded hole is also provided at the position of the protrusion, through which the exhaust oil silencer structure can be fixedly connected to the high and low pressure separation plate.

[0018] Preferably, the exhaust oil silencer structure includes a second exhaust port, which is arranged on the outer ring and opened in the radial direction, or the second exhaust port is arranged on the connecting plate and opened in the axial direction, and the gas inside the exhaust oil silencer structure is discharged through the second exhaust port.

[0019] Preferably, the inner ring is further provided with a notch opened in a radial direction to form an exhaust channel on the inner ring, and the exhaust channel enables the cavity inside the inner ring to be connected with the cavity between the inner ring and the outer ring.

[0020] Preferably, the exhaust passage and the second exhaust port are not arranged directly opposite each other; or, the exhaust passage and the second exhaust port are arranged at an angle of 180° in the circumferential direction.

[0021] Preferably, there are at least two inner rings, which are concentrically arranged, and in two adjacent inner rings: the exhaust channel of the radially inner inner ring is not arranged directly opposite to the exhaust channel of the radially outer inner ring; or, the exhaust channel of the radially inner inner ring is arranged at an angle of 180° with the exhaust channel of the radially outer inner ring in the circumferential direction;

[0022] Preferably, the exhaust channel of the radially outermost inner ring is not directly opposite to the second exhaust port of the outer ring; or, the exhaust channel of the radially outermost inner ring is arranged at an angle of 180° to the second exhaust port of the outer ring in the circumferential direction.

[0023] Preferably, an oil groove and an oil return channel are provided on the high- and low-pressure separation plate, and the oil groove is located inside the silencer cavity formed between the exhaust oil silencer structure and the high- and low-pressure separation plate, and the oil is introduced into the interior of the compressor below the high- and low-pressure separation plate through the oil groove and the oil return channel in sequence.

[0024] Preferably, the oil return passage is also connected to an oil return pipe, and the oil return pipe is connected to the oil pool at the bottom of the compressor.

[0025] Preferably, a grid-like structure is provided inside the inner ring, and / or a grid-like structure is provided between the inner ring and the outer ring, and / or the compressor is a scroll compressor.

[0026] The present invention also provides an air conditioner, comprising the compressor as described in any of the preceding items.

[0027] The compressor and air conditioner provided by the present invention have the following beneficial effects:

[0028] The present invention provides an exhaust oil separation silencer structure on the high and low pressure separation plates of the existing compressor (especially the scroll compressor), which can effectively form a silencer cavity that can be used for silencer and oil separation between the exhaust oil separation silencer structure and the high and low pressure separation plates, so that the gas and oil enter the cavity and undergo multiple collisions and settling, so as to achieve the purpose of silencer and oil separation; and further, through the two-layer or more ring structure of the outer ring and the inner ring of the exhaust oil separation silencer structure, the gas can first enter the cavity inside the inner ring and then enter the cavity between the inner ring and the outer ring, so as to form an effective silencer effect more than twice, thereby further improving the silencer effect and the oil return separation. The convex protrusion structure arranged on the outer ring can enhance the collision contact area of ​​the gas, so that the gas is collided and rebounded multiple times in the inner ring, and the silencing effect and the oil return separation effect on the gas are further improved; the present invention effectively arranges the silencing structure and the oil return structure inside the compressor, and the silencing effect and the oil return separation effect of the compressor exhaust are greatly improved compared with the existing oil return structure or silencing structure arranged outside the compressor. The compressor exhaust is effectively oiled and the noise is significantly reduced, which improves user performance and reduces noise to bring customer comfort, and the reliability of the compressor is significantly improved, and there is no need to arrange complex pipelines and other structures, and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the structure of a scroll compressor according to Embodiment 1 of the present invention;

[0030] Figure 2 This is a schematic diagram of the exhaust oil silencing exhaust structure of the first embodiment of the invention;

[0031] Figure 3 A schematic diagram of a high-low pressure partition plate, an oil pool, and an oil return pipe in Embodiment 1 of the present invention;

[0032] Figure 4 This is a schematic diagram of the axial exhaust structure of the compressor internal exhaust oil silencer in Example 2 of the invention;

[0033] Figure 5 This is a schematic diagram of the multi-ring structure of the compressor internal exhaust oil silencer axial exhaust in Example 3 of the invention;

[0034] Figure 6 This is a schematic diagram of the single-ring structure of the compressor internal exhaust oil silencer axial exhaust in Example 4 of the invention.

[0035] The reference numerals are:

[0036] 1. Upper cover; 100, upper cover high pressure chamber; 2. Oil return pipe; 3. Upper shell; 4. Cross slip ring; 5. Shell; 6. Lower bracket; 7. Stator; 8. Lower support ring; 9. Lower cover; 10. Lower bearing; 11. Crankshaft; 12. Rotor; 13. Eccentric sleeve; 14. Orbiting scroll; 15. Stationary scroll; 16. Stationary scroll cover; 17. Intermediate pressure chamber; 18. Floating seal seat; 19. Floating seal ring; 20. Floating seal plate; 21. High and low pressure separation Plate; 2101, first exhaust port; 2102, oil groove; 2103, oil return channel; 22, high and low pressure separation plate oil pool; 23, exhaust oil separation silencer structure; 231, outer ring; 232, inner ring; 233, connecting plate; 2301, protrusion; 2302, second exhaust port; 2303, inner rib; 2304, exhaust channel; 2305, threaded hole; 24, exhaust valve; 25, grid structure; 26, upper bracket; 27, upper bracket support plate. DETAILED DESCRIPTION

[0037] like Figure 1-6 As shown, the present invention provides a compressor, which includes:

[0038] A high-low pressure separation plate 21 and an exhaust oil silencer structure 23, wherein the exhaust oil silencer structure 23 is arranged at the upper end of the high-low pressure separation plate 21, and a first exhaust port 2101 is arranged on the high-low pressure separation plate 21, and a silencer cavity capable of silence is formed between the exhaust oil silencer structure 23 and the high-low pressure separation plate 21; and the exhaust oil silencer structure 23 includes an outer ring 231 located radially outward;

[0039] The exhaust oil silencer structure 23 also includes an inner ring 232 located radially inside the outer ring 231, and the cavity enclosed inside the inner ring 232 is connected to the first exhaust port 2101, so that the gas discharged from the first exhaust port 2101 first enters the inner ring and then enters the space between the inner ring and the outer ring; and / or, at least one protrusion 2301 is provided on the inner wall of the outer ring, and the protrusion protrudes radially inward.

[0040] The present invention provides an exhaust oil separation silencer structure on the high and low pressure separation plates of the existing compressor (especially the scroll compressor), which can effectively form a silencer cavity that can be used for silencer and oil separation between the exhaust oil separation silencer structure and the high and low pressure separation plates, so that the gas and oil enter the cavity and undergo multiple collisions and settling, so as to achieve the purpose of silencer and oil separation; and further, through the two-layer or more ring structure of the outer ring and the inner ring of the exhaust oil separation silencer structure, the gas can first enter the cavity inside the inner ring and then enter the cavity between the inner ring and the outer ring, so as to form an effective silencer effect more than twice, thereby further improving the silencer effect and the oil return separation. The convex protrusion structure arranged on the outer ring can enhance the collision contact area of ​​the gas, so that the gas is collided and rebounded multiple times in the inner ring, and the silencing effect and the oil return separation effect on the gas are further improved; the present invention effectively arranges the silencing structure and the oil return structure inside the compressor, and the silencing effect and the oil return separation effect of the compressor exhaust are greatly improved compared with the existing oil return structure or silencing structure arranged outside the compressor. The compressor exhaust is effectively oiled and the noise is significantly reduced, which improves user performance and reduces noise to bring customer comfort, and the reliability of the compressor is significantly improved, and there is no need to arrange complex pipelines and other structures, and the cost is low.

[0041] Existing scroll compressors make a lot of noise during operation and have a relatively high oil discharge rate. Currently, the industry generally uses pipeline silencers and oil separators on air-conditioning systems to solve this problem, but the effect is very poor and the cost is high. In order to solve the problem of structural friction pair failure and abnormal noise caused by scroll compressor exhaust and oil discharge, the present invention provides a scroll compressor with an exhaust oil separation silencer structure inside the compressor. By designing exhaust oil separation silencer structures with different shapes and structures, the compressor exhaust can be effectively separated for oil and the noise can be significantly reduced. The compressor of the present invention has an exhaust oil separation structure inside, and the separated oil is collected through the high and low pressure separation plate oil pool and returned to the compressor bottom oil pool through a designated return oil pipe; the exhaust oil separation structure of the present invention also has a good silencing effect, which significantly reduces the operating noise of the compressor.

[0042] like Figure 1As shown, the scroll compressor is mainly composed of a stator 7, a cross ring 4, an upper bracket 26, an upper bracket support plate 27, a lower support ring 8, a movable scroll 14, a crankshaft 11, etc. The stator 7 is fixed to the lower housing 5 through the lower bracket 6, and the upper bracket 26 is fixed to the lower housing 5 through interference fit and axial thrust. The movable scroll 14 and the fixed scroll 15 are installed on the upper bracket support plate 27 with a phase angle difference of 180 degrees. The movable scroll 14 moves under the drive of the crankshaft 11 and meshes with the fixed scroll 15 to form a series of crescent-shaped closed cavities that are isolated from each other and have continuously changing volumes. The sealing cover is installed on the back of the fixed scroll 15. During the operation of the compressor, the sealing cover can float axially and form a sealed exhaust channel with the high and low pressure partition plate 21. It should be pointed out that the static scroll as a whole has axial flexibility, that is, it can float axially. However, in normal operation, the static scroll as a whole is tightly pressed on the movable scroll 14 by the axial force of the gas in the medium-pressure chamber formed by the sealing cover and the back of the static scroll 15 (or the exhaust oil silencer structure 23), and the movable scroll 14 is tightly pressed on the upper bracket support plate 27 on the upper bracket 26 due to the action of the high-pressure gas in the compression chamber and the action force of the static scroll, and the upper bracket support plate 27 is fixed to the upper bracket 26 by screws. The high-low pressure separation plate 21 and the upper cover 1 are fixed to the upper shell 3 by welding, and the high-low pressure separation plate 21 and the upper cover 1 form the upper cover high-pressure chamber 100, and the upper shell 3 and the lower shell 5 are fixed together by welding.

[0043] When the compressor is running, the motor drives the crankshaft 11 to rotate. The crank section of the crankshaft 11 is equipped with an eccentric sleeve 13 with radial flexibility. The eccentric sleeve 13 drives the movable scroll 14 to move. Under the anti-rotation restriction of the cross slip ring 4, the movable scroll 14 performs translational motion around the center of the crankshaft at a fixed radius. The refrigerant entering from the outside of the compressor is sucked into the crescent-shaped suction cavity formed by the movable scroll 14 and the static scroll 15. After compression, it enters the exhaust oil separation silencer cavity formed by the exhaust oil separation silencer structure 23 and the high and low pressure separation plate 21 through the static scroll exhaust hole and the exhaust valve 24. After the oil separation and silencer vibration reduction process, it enters the upper cover high pressure cavity 100 through the second exhaust port of the exhaust oil separation silencer structure 23, and then is discharged through the upper cover exhaust pipe.

[0044] In the first embodiment of the present invention, after compression, the oil enters the exhaust oil silencer cavity formed by the exhaust oil silencer structure 23 and the high and low pressure separation plate 21 through the static vortex exhaust hole and the exhaust valve 24. The exhaust oil silencer structure 23 has the following characteristics: one or more protrusions 2301 are distributed in the outer ring structure, which can form an effect of changing the cavity volume size. At the same time, one or more radial second exhaust ports 2302 are opened on the outer ring, wherein the second exhaust ports 2302 are generally distributed opposite to the exhaust channel of the inner ring channel (set 180 degrees in the opposite direction), and the inner ring structure can be provided with one or more inner ribs. In the inner ring or the outer ring, a grid-like solid mesh material can be filled to enhance the oil separation and silencer effect.

[0045] In the first embodiment of the present invention, the high-low pressure separation plate 21 has the following characteristics: an annular strip structure is opened on it to form an oil groove 2102 to collect the separated oil, and the collected oil returns to the oil pool at the bottom of the compressor through the return oil channel 2103 and the return oil pipe 2.

[0046] Preferably, there are multiple protrusions 2301, which are arranged at intervals along the circumferential direction on the inner side wall of the outer ring 231; and / or, the cross section of the protrusion 2301 is a semicircular structure. This is the preferred structural form of the protrusion of the present invention, and the arrangement of multiple protrusion structures can further enhance the effect and function of oil-gas separation and improve the effect of gas silencing.

[0047] Preferably, the plurality of protrusions 2301 are evenly distributed in the circumferential direction. The plurality of protrusions evenly distributed in the circumferential direction can make the airflow more evenly distributed in the cavity, so that the gas silencing effect and the oil separation effect are further improved.

[0048] Preferably, at least one inner rib 2303 is provided on the inner side wall of the inner ring 232, and the inner rib 2303 protrudes radially inward. The inner rib structure provided on the inner side wall of the inner ring can further enhance the collision and friction of the gas flowing through the inner cavity of the inner ring, and further effectively improve the silencing effect on the gas and the oil separation effect.

[0049] Preferably, the inner rib 2303 is a plate-like structure; and / or, there are multiple inner ribs 2303, which are arranged at intervals along the circumferential direction on the inner side wall of the outer ring 231. This is also the preferred structural form of the inner rib of the present invention, and the arrangement of multiple inner rib structures can further enhance the effect and function of oil-gas separation and improve the effect of gas silencing.

[0050] Preferably, the cross section of the inner rib 2303 is a triangular structure; and / or, the plurality of inner ribs 2303 are evenly distributed in the circumferential direction. The plurality of inner ribs evenly distributed in the circumferential direction can make the airflow more evenly distributed in the cavity, so that the gas silencing effect and the oil separation effect are further improved.

[0051] Preferably, the exhaust oil silencer structure 23 includes a connecting plate 233, and the connecting plate 233 connects the inner ring 232 and the outer ring 231 as a whole; and / or, the position of the protrusion 2301 is further provided with a threaded hole 2305, through which the exhaust oil silencer structure 23 can be fixedly connected to the high-low pressure separation plate 21. The structure of the connecting plate can form a top cover part of the exhaust oil silencer structure, so that the exhaust oil silencer structure is covered on the upper end of the high-low pressure separation plate like a lid, and the function of the connecting plate is to connect the inner ring and the outer ring as a whole, and on the other hand, it can effectively form an effective seal through the connecting plate when the exhaust oil silencer structure is covered on the high-low pressure separation plate, and a silencer cavity is formed between the exhaust oil silencer structure and the high-low pressure separation plate, so as to effectively achieve the purpose of closed cavity silencer; the threaded hole provided at the protrusion position can thread the exhaust oil silencer structure to the high-low pressure separation plate through bolts or screws.

[0052] Preferably, the exhaust oil silencer structure 23 includes a second exhaust port 2302, which is arranged on the outer ring 231 and opened in the radial direction (in the first embodiment, as shown in FIG. Figure 2 ; Embodiment three, as Figure 5 ), or the second exhaust port 2302 is arranged on the connecting plate 233 and opened in the axial direction (Example 2, such as Figure 4 ; Embodiment 4, as Figure 6 ), and the gas inside the exhaust oil silencer structure 23 is discharged through the second exhaust port 2302. The present invention can discharge the gas in the silencer cavity inside the exhaust oil silencer structure through the second exhaust port provided on the outer ring or the second exhaust port provided on the connecting plate.

[0053] Preferably, the inner ring 232 is further provided with a notch opened in the radial direction to form an exhaust channel 2304 on the inner ring 232, and the cavity inside the inner ring 232 is connected to the cavity between the inner ring 232 and the outer ring 231 through the exhaust channel 2304. The exhaust channel opened on the inner ring can guide the gas in the cavity inside the inner ring into the cavity between the inner ring and the outer ring, thus forming a connecting channel.

[0054] Preferably, the exhaust channel 2304 and the second exhaust port 2302 are not arranged directly opposite each other; or, the exhaust channel 2304 and the second exhaust port 2302 are arranged at an angle of 180° in the circumferential direction. By not arranging the exhaust channel 2304 and the second exhaust port 2302 directly opposite each other, it is possible to prevent the gas discharged from the exhaust channel from being directly discharged from the silencer cavity from the second exhaust port, and being unable to effectively perform the function of silencer and oil separation between the inner and outer rings, thereby fully ensuring silencer and oil separation; and by arranging the exhaust channel 2304 and the second exhaust port 2302 at an angle of 180° in the circumferential direction, the gas discharged from the exhaust channel into the cavity between the inner and outer rings can flow to the second exhaust port after flowing through the maximum path for discharge, thereby further enhancing the function of silencer and oil separation in the cavity between the inner and outer rings, thereby improving the silencer effect and oil separation effect.

[0055] like Figure 5 In the third embodiment, preferably, there are at least two inner rings 232, which are concentrically arranged, and in two adjacent inner rings 232: the exhaust channel 2304 of the radially inner inner ring is not directly opposite to the exhaust channel 2304 of the radially outer inner ring; or, the exhaust channel 2304 of the radially inner inner ring is arranged at an angle of 180° to the exhaust channel 2304 of the radially outer inner ring in the circumferential direction. By having more than two inner rings and arranging them concentrically, the number of silencer cavities separated by the inner rings can be increased, further improving the silencer effect and oil separation effect of the gas between the inner rings, and by not arranging the exhaust channels 2304 between two adjacent inner rings directly opposite each other, it is possible to prevent the gas discharged from the exhaust channel from being directly discharged from the exhaust channel of the adjacent inner ring, and being unable to effectively play the role of silencer and oil separation between the two inner rings, thereby fully ensuring the silencer and oil separation; and by having the two exhaust channels 2304 of the adjacent inner rings be arranged at an angle of 180° in the circumferential direction, the gas discharged from the exhaust channel into the cavity between the two inner rings can flow through the maximum path and then flow to the exhaust channel to be discharged between the inner and outer rings, thereby further enhancing the silencer and oil separation effect in the cavity between the adjacent inner rings, thereby improving the silencer effect and oil separation effect.

[0056] Preferably, the exhaust channel 2304 located at the radially outermost inner ring is not directly opposite to the second exhaust port 2302 of the outer ring; or, the exhaust channel 2304 located at the radially outermost inner ring is arranged at an angle of 180° with the second exhaust port 2302 of the outer ring in the circumferential direction. By not directly opposite to the exhaust channel 2304 located at the radially outermost inner ring and the second exhaust port 2302, it is possible to prevent the gas discharged from the exhaust channel from being directly discharged from the silencer cavity from the second exhaust port, and thus being unable to effectively perform the function of silencer and oil separation between the inner and outer rings, thereby fully ensuring silencer and oil separation; and by arranging the exhaust channel 2304 located at the radially outermost inner ring and the second exhaust port 2302 at an angle of 180° in the circumferential direction, the gas discharged from the exhaust channel to the cavity between the inner and outer rings can flow to the second exhaust port after flowing through the maximum path for discharge, thereby further enhancing the function of silencer and oil separation in the cavity between the inner and outer rings, thereby improving the silencer effect and oil separation effect.

[0057] Preferably, an oil groove 2102 and an oil return channel 2103 are provided on the high-low pressure separation plate 21. The oil groove 2102 is located inside the silencer cavity formed between the exhaust oil separation silencer structure 23 and the high-low pressure separation plate 21. The oil is introduced into the interior of the compressor below the high-low pressure separation plate 21 through the oil groove 2102 and the oil return channel 2103 in sequence. The oil separated from the exhaust oil separation silencer structure can be effectively introduced into the interior of the compressor below the high-low pressure separation plate through the oil groove and the oil return channel provided on the high-low pressure separation plate, so that the oil is effectively recovered and transported to where it is needed.

[0058] Preferably, the oil return channel 2103 is also connected to an oil return pipe 2, and the oil return pipe 2 is connected to the oil pool at the bottom of the compressor. The oil in the oil return channel can be guided to the oil pool at the bottom of the compressor through the oil return pipe.

[0059] Preferably, a grid structure 25 is provided inside the inner ring 232, and / or a grid structure 25 is provided between the inner ring 232 and the outer ring 231, and / or the compressor is a scroll compressor. By providing a grid structure inside the inner ring or between the inner and outer rings, the collision and friction of the gas when passing through the grid structure are increased, and the effect of silencing and the effect of oil separation can be further enhanced.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A compressor, characterized in that: include: A high-low pressure separation plate (21) and an exhaust oil silencer structure (23), wherein the exhaust oil silencer structure (23) is arranged at the upper end of the high-low pressure separation plate (21), the high-low pressure separation plate (21) is provided with a first exhaust port (2101), and a silencer cavity capable of silencing is formed between the exhaust oil silencer structure (23) and the high-low pressure separation plate (21); and the exhaust oil silencer structure (23) comprises an outer ring (231) located radially outward; The exhaust oil silencer structure (23) further comprises an inner ring (232) located radially inward of the outer ring (231), wherein a cavity enclosed within the inner ring (232) is in communication with the first exhaust port (2101), so that gas exhausted from the first exhaust port (2101) first enters the inner ring and then enters the space between the inner ring and the outer ring; and / or at least one protrusion (2301) is provided on the inner side wall of the outer ring, wherein the protrusion protrudes radially inward; The exhaust oil silencer structure (23) comprises a connecting plate (233), wherein the connecting plate (233) connects the inner ring (232) and the outer ring (231) into one body; The exhaust oil silencer structure (23) comprises a second exhaust port (2302), the second exhaust port (2302) being arranged on the outer ring (231) and opened in a radial direction, or the second exhaust port (2302) being arranged on the connecting plate (233) and opened in an axial direction, and gas inside the exhaust oil silencer structure (23) is discharged through the second exhaust port (2302); The inner ring (232) is also provided with a notch opened in a radial direction to form an exhaust channel (2304) on the inner ring (232), and the exhaust channel (2304) enables the cavity inside the inner ring (232) to communicate with the cavity between the inner ring (232) and the outer ring (231); The exhaust channel (2304) and the second exhaust port (2302) are not arranged directly opposite each other; or, the exhaust channel (2304) and the second exhaust port (2302) are arranged at an angle of 180° in the circumferential direction; There are at least two inner rings (232) which are concentrically arranged, and in two adjacent inner rings (232): the exhaust channel (2304) of the radially inner inner ring is not arranged directly opposite to the exhaust channel (2304) of the radially outer inner ring; or, the exhaust channel (2304) of the radially inner inner ring is arranged at an angle of 180° with the exhaust channel (2304) of the radially outer inner ring in the circumferential direction; The exhaust channel (2304) of the inner ring located at the outermost radial side and the second exhaust port (2302) of the outer ring are not arranged directly opposite each other; or, the exhaust channel (2304) of the inner ring located at the outermost radial side and the second exhaust port (2302) of the outer ring are arranged at an angle of 180° in the circumferential direction; The compressor is a scroll compressor.

2. The compressor according to claim 1, characterized in that: The protrusions (2301) are multiple and are spaced apart and distributed along the circumferential direction on the inner side wall of the outer ring (231); and / or the cross section of the protrusion (2301) is a semicircular structure.

3. The compressor according to claim 2, characterized in that: The plurality of protrusions (2301) are evenly distributed in the circumferential direction.

4. The compressor according to claim 1, characterized in that: At least one inner rib (2303) is provided on the inner side wall of the inner ring (232), and the inner rib (2303) protrudes radially inward.

5. The compressor according to claim 4, characterized in that: The inner rib (2303) is a plate-like structure; and / or, there are a plurality of inner ribs (2303), which are spaced and distributed along the circumferential direction on the inner side wall of the outer ring (231).

6. The compressor according to claim 5, characterized in that: The cross section of the inner rib (2303) is a triangular structure; and / or the plurality of inner ribs (2303) are evenly distributed in the circumferential direction.

7. The compressor according to claim 1, characterized in that: A threaded hole (2305) is also provided at the position of the protrusion (2301), and the exhaust oil silencer structure (23) can be fixedly connected to the high-low pressure separation plate (21) through the threaded hole (2305).

8. The compressor according to claim 1, characterized in that: An oil groove (2102) and an oil return channel (2103) are provided on the high-low pressure separation plate (21); the oil groove (2102) is located inside a silencer cavity formed between the exhaust oil silencer structure (23) and the high-low pressure separation plate (21); and oil is introduced into the interior of the compressor below the high-low pressure separation plate (21) through the oil groove (2102) and the oil return channel (2103) in sequence.

9. The compressor according to claim 8, characterized in that: The oil return passage (2103) is also connected to an oil return pipe (2), and the oil return pipe (2) is connected to the oil pool at the bottom of the compressor.

10. The compressor according to any one of claims 1 to 9, characterized in that: A grid-like structure (25) is provided inside the inner ring (232), and / or a grid-like structure (25) is provided between the inner ring (232) and the outer ring (231).

11. An air conditioner, characterized in that: The invention comprises the compressor according to any one of claims 1 to 10.

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