compressor

Abstract

The utility model provides a kind of compressor, and the compressor includes: shell, the cavity is in shell, and the both ends of shell are provided with refrigerant inlet and refrigerant outlet respectively;Compression unit and driving part, driving part is driven to be connected with compression unit, and the outer side wall of driving part is between the inner side wall of shell with flow-through passage, one end of flow-through passage is communicated with refrigerant outlet, and the other end of flow-through passage is communicated with refrigerant outlet;Flow guide piece is between compression unit and driving part, and flow guide piece has flow guide cavity, and flow guide cavity has relatively arranged air inlet and air outlet, air inlet is communicated with refrigerant outlet, and air outlet is correspondingly arranged with flow-through passage, and is communicated with one end of flow-through passage close to compression unit. Through the technical scheme provided by the utility model, the problem that refrigerant gas will flow through the inside of driving part to take away lubricating oil during the compression process of the compressor in the prior art, leading to the aggravation of internal wear of driving part and the low working efficiency can be solved.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange system technology, and more specifically, to a compressor. Background Technology

[0002] In traditional compressor design, refrigerant oil plays a crucial role as both a lubricant and a cooling medium during compressor operation. In air conditioning systems, refrigerant undergoes heat exchange through phase change to achieve cooling and heating. Refrigerant oil, being an important component of the compressor, serves to lubricate moving parts and provide cooling. During compressor operation, refrigerant oil may be discharged from the pump along with the high-pressure refrigerant; this phenomenon is called "oil discharge."

[0003] During compression, the refrigerant gas produced flows through the drive section (usually the motor section), causing the lubricating oil (or refrigeration oil) used for lubrication and cooling in the drive section to be carried away by the refrigerant gas and ultimately discharged from the compressor into the refrigeration system. This phenomenon, known as increased "oil discharge rate," can easily lead to insufficient lubrication inside the drive section, reducing the compressor's efficiency and lifespan. Utility Model Content

[0004] This invention provides a compressor to solve the problem in the prior art where, during the compression process, refrigerant gas flows through the drive unit and carries away the lubricating oil, leading to increased wear inside the drive unit and lower working efficiency.

[0005] This utility model provides a compressor, comprising: a housing having a cavity, with a refrigerant inlet and a refrigerant outlet at both ends of the housing, the refrigerant inlet and outlet respectively communicating with the cavity; a compression unit and a drive unit, sequentially arranged within the cavity along the direction from the refrigerant inlet to the refrigerant outlet, the drive unit being drivenly connected to the compression unit to drive the compression unit to compress the refrigerant, the compression unit having a refrigerant discharge outlet, a flow channel being formed between the outer side wall of the drive unit and the inner side wall of the housing, one end of the flow channel communicating with the refrigerant discharge outlet, and the other end of the flow channel communicating with the refrigerant outlet; and a guide member, disposed within the cavity and located between the compression unit and the drive unit, the guide member having a guide cavity having an air inlet and an air outlet oppositely arranged, the air inlet communicating with the refrigerant discharge outlet, the air outlet corresponding to the flow channel and communicating with the end of the flow channel near the compression unit.

[0006] Furthermore, the guide member also has an oil return chamber, which is independently distributed with the guide chamber. The oil return chamber is correspondingly arranged with the drive unit. The oil return chamber has a first oil inlet and a first oil outlet. The projection of the first oil inlet along the cavity axis coincides at least partially with the projection of the drive unit along the cavity axis. The first oil outlet is located at the bottom of the guide member.

[0007] Furthermore, the flow guide cavity has a first section and a second section that are interconnected. The second section is located on the side of the first section away from the compression unit. The first section extends radially along the cavity and is connected to the refrigerant outlet. The second section extends axially along the cavity and is connected to the end of the flow channel near the compression unit.

[0008] Furthermore, the projection of the second segment along the cavity axis is located on the outer periphery of the projection of the first segment along the cavity. The guide cavity also has a transition section, which is located between the first segment and the second segment and is inclined from the first segment to the second segment. The two ends of the transition section are respectively connected to the first segment and the second segment.

[0009] Furthermore, the flow guide includes a cover, which is a hollow structure. The cover has an inner wall and an outer wall that are arranged opposite to each other. There is a gap between the inner wall and the outer wall, which forms a flow guide cavity. The ends of the inner wall and the outer wall near the drive unit cooperate to form an air outlet. The bottom of the outer wall has a concave portion, which is correspondingly arranged with the compression unit. The side wall of the concave portion has an air inlet.

[0010] Furthermore, the compressor also includes an oil-gas separation section, which is disposed within the cavity and located between the drive section and the refrigerant outlet. The oil-gas separation section has an oil separation channel and an exhaust chamber. The oil separation channel has a first inlet and a first outlet arranged opposite to each other, and the exhaust chamber has a second inlet and a second outlet arranged opposite to each other. The first inlet is correspondingly disposed to the flow channel and is connected to the end of the flow channel away from the compression unit. The first outlet is connected to the second inlet, and the second outlet is connected to the refrigerant outlet.

[0011] Furthermore, the oil-gas separation unit includes:

[0012] An oil separator is installed on the housing. The oil separator has an oil separation channel inside. The first outlet is located in the middle of the oil separator and passes through the end of the oil separator near the refrigerant outlet. The first inlet is located at the end of the oil separator facing the flow channel and is located at the outer edge of the oil separator. Multiple guide plates are installed inside the oil separator. The multiple guide plates are spaced apart along the circumference of the cavity. The guide plates extend from the outer edge of the oil separator to the first outlet. The multiple guide plates cooperate to form an oil separation channel.

[0013] The filter cartridge has an end away from the refrigerant outlet that is inserted into multiple first outlets. The filter cartridge has an exhaust chamber inside. The side wall of the filter cartridge has multiple filter holes that are arranged through it. The multiple filter holes are distributed at intervals along the axial direction of the filter cartridge. The filter holes are connected to the exhaust chamber. The filter holes on the filter cartridge located inside the oil separator form a second inlet, and the filter holes on the filter cartridge located outside the oil separator form a second outlet.

[0014] Furthermore, the oil separator has a top plate, a side plate, and a bottom plate arranged opposite to each other. The top plate and the bottom plate are spaced apart along the axial direction of the cavity, and the side plate is arranged between the top plate and the bottom plate. Along the circumference of the cavity, there is a gap between the top plate and the bottom plate, and the gap forms a first inlet. The top plate has an opening through which the filter cartridge passes. The opening communicates with the first outlet. Along the axial direction of the cavity, the projection of the flow channel is located outside the projection of the bottom plate.

[0015] Furthermore, multiple guide vanes are arranged in a ring around the outer periphery of the first outlet. The guide vanes have an arc-shaped structure and have concave and convex sides arranged opposite to each other along the circumference of the cavity. The concave side of one guide vane is arranged facing the convex side of its adjacent guide vane. A turbulence structure is provided on the side wall of the guide vane. The turbulence structure protrudes from or is recessed into the side wall surface of the guide vane.

[0016] Furthermore, an end cap is provided at the end of the filter cartridge away from the oil separator. The end cap covers the end of the filter cartridge, and the side wall of the end cap protrudes from the side wall of the filter cartridge along the circumference of the cavity and extends from the filter cartridge toward the refrigerant outlet. The side wall of the end cap has a curved structure.

[0017] Furthermore, the drive unit includes a crankshaft and a motor assembly. The motor assembly is sleeved on the outer periphery of the crankshaft and is drivenly connected to the crankshaft. Multiple recesses are spaced apart along the circumferential direction of the cavity on the outer side wall of the motor assembly. The recesses extend axially along the cavity. The multiple recesses form a flow channel with the inner side wall of the housing. The crankshaft has a lubricating oil passage with an oil slinger located at the end of the crankshaft. Along the axial direction of the cavity, the projection of the motor assembly is located within the projection of the oil return cavity, and the projection of the guide cavity is located outside the projection of the recesses on the motor assembly. The bottom of the guide cavity has a second oil outlet.

[0018] Furthermore, the compressor also includes an oil distribution component, which is disposed in the cavity and located above the motor assembly. The oil distribution component has a receiving cavity, and a second oil inlet and an oil return port are provided on the side of the oil distribution component facing the motor assembly. The second oil inlet and the oil return port are respectively connected to the receiving cavity. The end of the crankshaft away from the motor assembly has the second oil inlet, and the oil slinger is located in the receiving cavity. Along the axial direction of the cavity, the projection of the oil distribution component is located within the projection of the motor assembly.

[0019] Furthermore, the end of the oil distribution component near the motor assembly abuts against the inner wall of the end of the motor assembly away from the compression unit. The oil distribution component includes a baffle and an oil distribution plate. The baffle extends axially along the cavity and the oil distribution plate is disposed on the side of the baffle facing the motor assembly. The second oil inlet and the oil return outlet are both disposed on the oil distribution plate, and the baffle and the oil distribution plate form a receiving cavity. Multiple oil baffle strips are disposed on the side of the oil distribution plate facing the receiving cavity. The oil baffle strips protrude from the surface of the oil distribution plate and extend radially along the cavity to divide the oil distribution plate into multiple oil distribution areas. The oil distribution component includes multiple oil return outlets, and multiple oil return outlets are distributed in each oil distribution area.

[0020] By applying the technical solution of this utility model, the guide component and the flow channel cooperate to make the refrigerant gas flow along a predetermined path, thereby achieving the guidance and control of the refrigerant. This allows the refrigerant to flow from the outer wall of the drive unit, preventing the refrigerant from directly passing through the inside of the drive unit, reducing the flow resistance of the refrigerant, optimizing the flow path of the refrigerant inside the compressor, and preventing the refrigerant from carrying away the lubricating oil inside the drive unit when it flows through it, thereby reducing the oil discharge rate of the compressor. This ensures the heat exchange efficiency of the refrigerant in the subsequent heat exchange system and prevents the components or pipelines in the heat exchange system from being blocked by the lubricating oil in the refrigerant. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0022] Figure 1 A schematic diagram of the compressor provided by this utility model is shown;

[0023] Figure 2 A schematic diagram of the internal components of the compressor provided by this utility model is shown;

[0024] Figure 3 A schematic diagram of the flow guide provided by this utility model is shown.

[0025] Figure 4 A schematic diagram of the flow guide provided by this utility model is shown;

[0026] Figure 5 This invention provides a schematic diagram of the structure of the oil separator, filter cartridge, and oil distribution component.

[0027] Figure 6 A schematic diagram of the structure of the oil separator provided by this utility model is shown;

[0028] Figure 7 This invention provides a schematic diagram of the oil distribution cover from a downward viewing angle.

[0029] Figure 8 A schematic diagram of the structure of the filter cartridge provided by this utility model is shown;

[0030] Figure 9 A schematic diagram of the structure of the oiling component provided by this utility model is shown.

[0031] The above figures include the following reference numerals:

[0032] 10. Shell; 100. Cavity; 101. Refrigerant inlet; 102. Refrigerant outlet; 103. Flow channel;

[0033] 20. Compression unit; 21. Compression cylinder; 22. Silencer;

[0034] 30. Drive unit; 31. Crankshaft; 32. Motor assembly; 320. Recess; 321. Rotor; 322. Stator;

[0035] 40. Flow guide; 401. Flow guide cavity; 4011. First section; 4012. Second section; 4013. Transition section; 402. Air inlet; 403. Air outlet; 404. Oil return cavity; 405. First oil inlet; 406. First oil outlet; 407. Second oil outlet; 408. Through hole;

[0036] 41. Inner wall; 42. Outer wall; 421. Mounting plate;

[0037] 50. Oil-gas separation section; 501. Oil separation channel; 5011. First inlet; 5012. First outlet; 502. Exhaust chamber; 5021. Second inlet; 5022. Second outlet;

[0038] 51. Oil separator cover; 511. Flow deflector; 512. Turbidity structure; 513. Top plate; 514. Side plate; 515. Bottom plate; 52. Filter cartridge; 521. End cap;

[0039] 60. Oil distribution plate; 601. Second oil inlet; 602. Oil return port; 61. Baffle; 62. Oil distribution plate; 63. Oil baffle strip;

[0040] 71. First connecting flange;

[0041] 80. Dispenser. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0043] like Figures 1 to 9As shown, this embodiment of the present invention provides a compressor, which includes a housing 10, a compression unit 20, a drive unit 30, and a flow guide 40. The housing 10 has a cavity 100, and a refrigerant inlet 101 and a refrigerant outlet 102 are respectively provided at both ends of the housing 10. The refrigerant inlet 101 and the refrigerant outlet 102 are respectively connected to the cavity 100, and the refrigerant inlet 101 is connected to a distributor 80. The compression unit 20 and the drive unit 30 are sequentially arranged in the cavity 100 along the direction from the refrigerant inlet 101 to the refrigerant outlet 102. The drive unit 30 is driven by the compression unit 20 to drive the compression unit 20 to compress the refrigerant. The compression unit 20 has a refrigerant outlet 102. A flow channel 103 is provided between the outer side wall of the drive unit 30 and the inner side wall of the housing 10. One end of the flow channel 103 is connected to the refrigerant outlet 102, and the other end of the flow channel 103 is connected to the refrigerant outlet 102. The flow guide 40 is disposed in the cavity 100 and located between the compression unit 20 and the drive unit 30. The flow guide 40 has a flow guide cavity 401, which has an air inlet 402 and an air outlet 403 disposed opposite to each other. The air inlet 402 is connected to the refrigerant outlet 102, and the air outlet 403 is correspondingly disposed to the flow channel 103 and is connected to the end of the flow channel 103 near the compression unit 20.

[0044] By applying the technical solution of this utility model, the guide member 40 cooperates with the flow channel 103 to make the refrigerant gas flow along a predetermined path, thereby realizing the guidance and control of the refrigerant. This allows the refrigerant to flow from the outer wall of the drive section 30, preventing the refrigerant from directly passing through the interior of the drive section 30, reducing the flow resistance of the refrigerant, optimizing the flow path of the refrigerant inside the compressor, and preventing the refrigerant from carrying away the lubricating oil inside the drive section 30 when it flows through it, thereby reducing the oil discharge rate of the compressor. This ensures the heat exchange efficiency of the refrigerant in the subsequent heat exchange system and prevents the components or pipelines in the heat exchange system from being blocked by the lubricating oil in the refrigerant.

[0045] like Figure 1 and Figure 2 As shown, the guide member 40 also has an oil return chamber 404, which is independently distributed with the guide chamber 401. The oil return chamber 404 is correspondingly arranged with the drive unit 30. The oil return chamber 404 has a first oil inlet 405 and a first oil outlet 406. The projection of the first oil inlet 405 along the axial direction of the cavity 100 at least partially coincides with the projection of the drive unit 30 along the axial direction of the cavity 100. The first oil outlet 406 is located at the bottom of the guide member 40. The arrangement of the oil return chamber 404 allows the refrigerant oil dripping from inside the drive unit 30 to enter the oil return chamber 404 from the first oil inlet 405 and then flow out of the guide member 40 from the first oil outlet 406, returning to the oil sump at the bottom of the refrigerant inlet 101. This avoids the accumulation of refrigerant oil inside the compressor, thereby realizing the recycling of refrigerant oil.

[0046] in, Figure 1 The arrows in the diagram indicate the direction of refrigerant flow. Figure 2 The arrows indicate the flow direction of the lubricating oil used to lubricate the drive unit inside the compressor.

[0047] Specifically, the compression unit 20 includes a compression cylinder 21 and a muffler 22. The compression cylinder 21 is used to compress the refrigerant. The muffler 22 is located above the compression cylinder 21 and communicates with it. The muffler 22 is used to silence the refrigerant discharged from the compression cylinder 21. The outlet of the muffler 22 is located on the side wall. A guide 40 is located on the outer periphery of the muffler 22. The air inlet 402 is correspondingly located to the outlet of the muffler 22 and communicates with it.

[0048] like Figure 2 As shown, the flow guide cavity 401 has a first section 4011 and a second section 4012 that are interconnected. The second section 4012 is located on the side of the first section 4011 away from the compression unit 20. The first section 4011 extends radially along the cavity 100 and is connected to the refrigerant outlet 102. The second section 4012 extends axially along the cavity 100 and is connected to the end of the flow channel 103 near the compression unit 20. The extension direction of the first section 4011 is the same as the extension direction of the outlet of the muffler 22, and the extension direction of the second section 4012 is the same as the extension direction of the flow channel 103. This optimizes the flow path of the refrigerant gas, allowing the refrigerant gas to flow more smoothly from the muffler 22 in the compression unit 20 to the flow channel 103, avoiding aimless free flow or impact after the refrigerant flows out of the compression unit 20, reducing flow resistance, and thus reducing unnecessary energy consumption of the refrigerant.

[0049] In this embodiment, the projection of the second segment 4012 along the axial direction of the cavity 100 is located on the outer periphery of the projection of the first segment 4011 along the cavity 100. The guide cavity 401 also has a transition segment 4013, which is disposed between the first segment 4011 and the second segment 4012 and is inclined from the first segment 4011 to the second segment 4012. The two ends of the transition segment 4013 are respectively connected to the first segment 4011 and the second segment 4012. The arrangement of the transition segment 4013 allows the refrigerant gas to flow more smoothly from the first segment 4011 to the second segment 4012, avoiding turbulence and resistance during gas flow, improving the refrigerant flow efficiency, and thus improving the overall performance of the compressor.

[0050] like Figure 3 and Figure 4As shown, the flow guide 40 includes a cover with a hollow structure. The cover has an inner wall 41 and an outer wall 42 arranged opposite to each other, with a gap between the inner wall 41 and the outer wall 42 forming a flow guide cavity 401. The ends of the inner wall 41 and the outer wall 42 near the drive unit 30 cooperate to form an air outlet 403, which is annular. The bottom of the outer wall 42 has a recess 320, which corresponds to the compression unit 20 and is fastened to the outer periphery of the muffler 22. The side wall of the recess 320 has an air inlet 402. The hollow structure of the cover and the recess 320 optimize the structure of the flow guide 40, allowing it to be installed more compactly inside the compressor. Utilizing its specific shape and position, the flow guide 40 can fit tightly against the compression unit 20, thereby optimizing the refrigerant gas flow path.

[0051] like Figures 1 to 3 As shown, a first connecting flange 71 is provided between the compression unit 20 and the silencer 22. The bottom of the outer wall 42 has multiple mounting plates 421, which are fixed to the first connecting flange 71 by fasteners. The silencer 22 and the flow guide 40 pass through the first connecting flange 71. The flow guide 40 is provided with a through hole 408, through which the first connecting flange 71 passes.

[0052] Specifically, the inner wall 41 forms an oil return cavity 404, and the end of the inner wall 41 near the drive unit 30 has an opening, which forms a first oil inlet 405. The first oil outlet 406 is disposed along the axial direction of the cavity on the side walls of the inner wall 41 and the outer wall 42.

[0053] The first oil outlet 406 is a strip-shaped hole.

[0054] like Figure 1 , Figure 5 and Figure 6As shown, the compressor also includes an oil-gas separation section 50, which is disposed within the cavity 100 and located between the drive section 30 and the refrigerant outlet 102. The oil-gas separation section 50 has an oil separation channel 501 and an exhaust chamber 502. The oil separation channel 501 has a first inlet 5011 and a first outlet 5012 disposed opposite to each other. The exhaust chamber 502 has a second inlet 5021 and a second outlet 5022 disposed opposite to each other. The first inlet 5011 is correspondingly disposed with the flow channel 103 and is connected to the end of the flow channel 103 away from the compression unit 20. The first outlet 5012 is connected to the second inlet 5021, and the second outlet 5022 is connected to the refrigerant outlet 102. The structure of the oil separation channel 501 allows the refrigerant gas to collide with the inner wall of the oil separation channel 501 during the flow process, thus separating the oil. This allows the refrigerant gas to undergo oil separation as it flows from the drive unit 30 to the refrigerant outlet 102, preventing refrigeration oil from entering the system and affecting the heat exchange effect. At the same time, it can also reduce the oil discharge rate of the compressor and improve the system energy efficiency.

[0055] Specifically, the oil-gas separation unit 50 includes an oil separator 51 and a filter cartridge 52. The oil separator 51 is mounted on the housing 10 and has an oil separation channel 501 inside. The first outlet 5012 is located in the middle of the oil separator 51 and passes through the end of the oil separator 51 near the refrigerant outlet 102. The first inlet 5011 is located at the end of the oil separator 51 facing the flow channel 103 and is located at the outer edge of the oil separator 51. Multiple guide plates 511 are arranged inside the oil separator 51. The multiple guide plates 511 are arranged circumferentially around the cavity 100 and extend from the outer edge of the oil separator 51 towards the first outlet 5012. The multiple guide plates 511 cooperate to form the oil separation channel 501. The end of the filter cartridge 52 furthest from the refrigerant outlet 102 is inserted into multiple first outlets 5012. The filter cartridge 52 has an exhaust chamber 502, and its sidewalls have multiple through-holes distributed axially along the filter cartridge 52. These holes communicate with the exhaust chamber 502. The holes on the filter cartridge 52 located within the oil separator 51 form a second inlet 5021, while the holes on the filter cartridge 52 located outside the oil separator 51 form a second outlet 5022. The arrangement of the oil separator 51 and the filter cartridge 52 allows for more effective oil separation of the refrigerant gas during flow. When the gas enters the filter cartridge 52 through the second inlet 5021, the filter holes further intercept any remaining lubricating oil particles in the refrigerant. When the refrigerant enters the exhaust chamber 502 and exits through the second outlet 5022, some remaining lubricating oil is still filtered out. This dual-filtration design improves the purity of the final discharged refrigerant gas, reduces non-refrigerant components in the system, and contributes to improving the overall energy efficiency and stability of the system.

[0056] In this embodiment, the specific structure of the guide plate 511 is not limited, and it can be a straight plate structure, a folded plate structure, or a curved surface structure, etc.

[0057] like Figure 6 and Figure 7 As shown, the oil separator 51 has a top plate 513, a side plate 514, and a bottom plate 515 arranged opposite to each other. The top plate 513 and the bottom plate 515 are spaced apart along the axial direction of the cavity 100. The side plate 514 is arranged between the top plate 513 and the bottom plate 515. Along the circumference of the cavity 100, there is a gap between the top plate 513 and the bottom plate 515, which forms a first inlet 5011. The top plate 513 has an opening through which the filter cartridge 52 passes. The opening communicates with the first outlet 5012. Along the axial direction of the cavity 100, the projection of the flow channel 103 is located outside the projection of the bottom plate 515, so as to avoid the refrigerant in the flow channel 103 from colliding with the bottom plate 515 when it enters the oil separator 51.

[0058] In this application, multiple guide plates 511 are arranged in a ring around the outer periphery of the first outlet 5012. The guide plates 511 have an arc-shaped structure and have concave and convex sides arranged opposite to each other along the circumference of the cavity 100. The concave side of one guide plate 511 is arranged facing the convex side of its adjacent guide plate 511. The multiple guide plates 511 together form a spiral separation path, which prolongs the gas flow path and causes the gas discharged from the compression unit 20 to undergo multiple changes in direction and speed before entering the filter cartridge 52. This effectively increases the contact area and time between the gas and the inner wall of the oil separator, and promotes the separation of lubricating oil particles entrained in the refrigerant gas from the gas.

[0059] Specifically, a turbulence-inducing structure 512 is provided on the side wall of the guide vane 511, which protrudes from or is recessed into the side wall surface of the guide vane 511. The turbulence-inducing structure 512 increases the contact area between the refrigerant and the guide vane 511, further improving the separation effect between the refrigerant and the lubricating oil.

[0060] like Figure 6 and Figure 7 As shown, the turbulence structure 512 is configured with multiple protrusions that extend along the axial direction of the cavity 100. The multiple protrusions are distributed along the extension direction of the guide plate 511, thus forming an angle with the flow direction of the refrigerant, so as to further increase the impact effect between the refrigerant and the guide member 40.

[0061] like Figure 8 As shown, an end cap 521 is provided at the end of the filter cartridge 52 away from the oil separator 51. The end cap 521 covers the end of the filter cartridge 52. The side wall of the end cap 521 protrudes from the side wall of the filter cartridge 52 along the circumference of the cavity 100 to guide the refrigerant discharged from the filter cartridge 52 and prevent the refrigerant from directly impacting the housing 10. The side wall of the end cap 521 extends from the filter cartridge 52 toward the refrigerant outlet 102. The side wall of the end cap 521 has a curved structure, which can guide the flow of refrigerant more gently and reduce the impact force of the refrigerant.

[0062] Furthermore, the drive unit 30 includes a crankshaft 31 and a motor assembly 32. The motor assembly 32 includes a rotor 321 and a stator 322. The stator 322 is sleeved on the outer periphery of the rotor 321 and is drivenly connected to the rotor 321. The rotor is sleeved on the outer periphery of the crankshaft 31. Multiple recesses 320 are provided at intervals along the circumference of the cavity 100 on the outer sidewall of the motor assembly 32. The recesses 320 extend axially along the cavity 100. The multiple recesses 320 and the inner sidewall of the housing 10 form a flow channel 103. The ends of the inner and outer walls of the guide member 40 abut against the outer sidewall of the motor assembly 32 to prevent refrigerant from leaking out from the gap between the guide member 40 and the motor assembly 32. The crankshaft 31 has a lubricating oil passage with an oil slinger located at the end of the crankshaft 31. Along the axial direction of cavity 100, the projection of motor assembly 32 is located within the projection of oil return cavity 404. In this way, the lubricating oil dripping back from motor assembly 32 will fall into oil return cavity 404, preventing it from flowing into guide cavity 401. The projection of guide cavity 401 is located outside the projection of recess 320 on motor assembly 32, preventing refrigerant from impacting motor assembly 32 or entering motor assembly 32 during flow. The bottom of guide cavity 401 has a second oil outlet 407. The oil accumulated in filter cartridge 52 will flow out from filter holes onto guide plate 511. The lubricating oil on guide plate 511 will be discharged from first inlet 5011, flow down along the side wall of flow channel 103, enter guide cavity 401, flow out from second oil outlet 407 along outer wall 42, and flow back to the bottom of compressor.

[0063] like Figure 1 and Figure 9 As shown, the compressor also includes an oil distribution component 60, which is located within the cavity 100 and above the motor assembly 32. The oil distribution component 60 has a receiving cavity. A second oil inlet 601 and an oil return port 602 are provided on the side of the oil distribution component facing the motor assembly 32, respectively communicating with the receiving cavity. The end of the crankshaft 31 furthest from the motor assembly 32 passes through the second oil inlet 601, and the oil slinger is located within the receiving cavity. Along the axial direction of the cavity 100, the projection of the oil distribution component 60 lies within the projection of the motor assembly 32. The arrangement of the oil distribution component 60 allows the refrigerant oil on the crankshaft 31 to be more flexibly distributed to the motor assembly 32 through different positions of the oil return port 602, thereby achieving flexible lubrication and cooling of the motor assembly 32. This optimizes the oil distribution method inside the compressor, improves the lubrication and cooling effect of the compressor, avoids wear caused by insufficient oil and overheating, and improves the overall performance of the compressor.

[0064] In this embodiment, the oil distribution component 60 is fixed below the oil distribution cover 51, and the oil distribution cover 51 is fixed on the inner side wall of the housing 10.

[0065] The oil distribution component 60, located near the end of the motor assembly 32, abuts against the inner wall of the end of the motor assembly 32 furthest from the compression unit 20. The oil distribution component 60 includes a baffle 61 and an oil distribution plate 62. The baffle 61 extends axially along the cavity 100 to prevent oil from splashing onto the inner wall of the housing, thus avoiding oil waste. The oil distribution plate 62 is located on the side of the baffle 61 facing the motor assembly 32. A second oil inlet 601 and an oil return port 602 are both located on the oil distribution plate 62. The baffle 61 and the oil distribution plate 62 form a receiving cavity. The oil distribution plate 62 has multiple oil baffles 63 on the side facing the receiving cavity. The oil baffles 63 protrude from the surface of the oil distribution plate 62 and extend radially along the cavity 100. The multiple oil baffles 63 cooperate with the oil distribution plate 62 to form multiple oil distribution areas, so that the oil distribution can be more uniform and form regional distribution. The oil distribution component 60 includes multiple oil return ports 602, and multiple oil return ports 602 are distributed in each oil distribution area. This allows the refrigeration oil to be more uniformly distributed on the motor assembly 32, thereby achieving precise lubrication and cooling of the stator 322 and rotor 321.

[0066] In other embodiments, multiple second oil inlets 601 can be provided on the oil distribution plate 62 above the location where the motor assembly 32 generates more heat, so as to achieve targeted cooling and lubrication and ensure the normal operation of the motor assembly 32.

[0067] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0068] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0069] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0070] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0071] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0072] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A compressor, characterized in that, The compressor includes: A housing (10) has a cavity (100) inside. A refrigerant inlet (101) and a refrigerant outlet (102) are respectively provided at both ends of the housing (10). The refrigerant inlet (101) and the refrigerant outlet (102) are respectively connected to the cavity (100). A compression unit (20) and a drive unit (30) are sequentially arranged in the cavity (100) along the direction from the refrigerant inlet (101) to the refrigerant outlet (102). The drive unit (30) is driven to the compression unit (20) to drive the compression unit (20) to compress the refrigerant. The compression unit (20) has a refrigerant outlet (102). A flow channel (103) is provided between the outer side wall of the drive unit (30) and the inner side wall of the housing (10). One end of the flow channel (103) is connected to the refrigerant outlet (102), and the other end of the flow channel (103) is connected to the refrigerant outlet (102). A flow guide (40) is disposed in the cavity (100) and located between the compression unit (20) and the drive unit (30). The flow guide (40) has a flow guide cavity (401), which has an air inlet (402) and an air outlet (403) disposed opposite to each other. The air inlet (402) is connected to the refrigerant outlet (102), and the air outlet (403) is correspondingly disposed to the flow channel (103) and is connected to one end of the flow channel (103) near the compression unit (20).

2. The compressor according to claim 1, characterized in that, The guide member (40) also has an oil return chamber (404), which is independently distributed with the guide chamber (401). The oil return chamber (404) is correspondingly arranged with the drive unit (30). The oil return chamber (404) has a first oil inlet (405) and a first oil outlet (406). The projection of the first oil inlet (405) along the axial direction of the cavity (100) at least partially coincides with the projection of the drive unit (30) along the axial direction of the cavity (100). The first oil outlet (406) is located at the bottom of the guide member (40).

3. The compressor according to claim 2, characterized in that, The flow guide cavity (401) has a first section (4011) and a second section (4012) that are connected to each other. The second section (4012) is located on the side of the first section (4011) away from the compression unit (20). The first section (4011) extends radially along the cavity (100) and is connected to the refrigerant outlet (102). The second section (4012) extends axially along the cavity (100) and is connected to the end of the flow channel (103) near the compression unit (20).

4. The compressor according to claim 3, characterized in that, The projection of the second segment (4012) along the axial direction of the cavity (100) is located on the outer periphery of the projection of the first segment (4011) along the cavity (100). The guide cavity (401) also has a transition segment (4013), which is disposed between the first segment (4011) and the second segment (4012) and is inclined from the first segment (4011) to the second segment (4012). The two ends of the transition segment (4013) are respectively connected to the first segment (4011) and the second segment (4012).

5. The compressor according to claim 1, characterized in that, The flow guide (40) includes a cover, which is a hollow structure. The cover has an inner wall (41) and an outer wall (42) that are arranged opposite to each other. There is a gap between the inner wall (41) and the outer wall (42), which forms the flow guide cavity (401). The ends of the inner wall (41) and the outer wall (42) near the drive unit (30) cooperate to form the air outlet (403). The bottom of the outer wall (42) has a concave portion (320), which is correspondingly arranged with the compression unit (20). The side wall of the concave portion (320) has the air inlet (402).

6. The compressor according to claim 1, characterized in that, The compressor further includes an oil-gas separation section (50), which is disposed in the cavity (100) and located between the drive unit (30) and the refrigerant outlet (102). The oil-gas separation section (50) has an oil separation channel (501) and an exhaust chamber (502). The oil separation channel (501) has a first inlet (5011) and a first outlet (5012) arranged opposite to each other. The exhaust chamber (502) has a second inlet (5021) and a second outlet (5022) arranged opposite to each other. The first inlet (5011) is correspondingly disposed to the flow channel (103) and is connected to the end of the flow channel (103) away from the compression unit (20). The first outlet (5012) is connected to the second inlet (5021), and the second outlet (5022) is connected to the refrigerant outlet (102).

7. The compressor according to claim 6, characterized in that, The oil-gas separation unit (50) includes: An oil separator (51) is disposed on the housing (10). The oil separator (51) has an oil separation channel (501) inside. The first outlet (5012) is located in the middle of the oil separator (51) and passes through the end of the oil separator (51) near the refrigerant outlet (102). The first inlet (5011) is disposed at the end of the oil separator (51) facing the flow channel (103) and is located at the outer edge of the oil separator (51). A plurality of guide plates (511) are disposed inside the oil separator (51). The plurality of guide plates (511) are arranged circumferentially along the cavity (100). The guide plates (511) extend from the outer edge of the oil separator (51) to the first outlet (5012). The plurality of guide plates (511) cooperate to form the oil separation channel (501). A filter cartridge (52) is provided at the end of which the filter cartridge (52) is away from the refrigerant outlet (102) and passes through a plurality of first outlets (5012). The filter cartridge (52) has an exhaust chamber (502) inside. The side wall of the filter cartridge (52) has a plurality of filter holes that are arranged through it. The plurality of filter holes are distributed at intervals along the axial direction of the filter cartridge (52). The filter holes are connected to the exhaust chamber (502). The filter holes on the filter cartridge (52) located inside the oil separator (51) form the second inlet (5021). The filter holes on the filter cartridge (52) located outside the oil separator (51) form the second outlet (5022).

8. The compressor according to claim 7, characterized in that, The oil separator (51) has a top plate (513), a side plate (514), and a bottom plate (515) arranged opposite to each other. The top plate (513) and the bottom plate (515) are spaced apart along the axial direction of the cavity (100). The side plate (514) is arranged between the top plate (513) and the bottom plate (515). Along the circumference of the cavity (100), there is a gap between the top plate (513) and the bottom plate (515). The gap forms the first inlet (5011). The top plate (513) has an opening. The filter cartridge (52) passes through the opening. The opening communicates with the first outlet (5012). Along the axial direction of the cavity (100), the projection of the flow channel (103) is located outside the projection of the bottom plate (515).

9. The compressor according to claim 7, characterized in that, Multiple guide plates (511) are circumferentially arranged around the outer periphery of the first outlet (5012). The guide plates (511) are arc-shaped and have concave and convex sides arranged opposite to each other along the circumference of the cavity (100). The concave side of one of the guide plates (511) is arranged facing the convex side of its adjacent guide plate (511). A turbulence structure (512) is provided on the side wall of the guide plate (511). The turbulence structure (512) protrudes from or is recessed into the side wall surface of the guide plate (511).

10. The compressor according to claim 7, characterized in that, An end cap (521) is provided at the end of the filter cartridge (52) away from the oil separator (51). The end cap (521) covers the end of the filter cartridge (52). The side wall of the end cap (521) protrudes from the side wall of the filter cartridge (52) along the circumference of the cavity (100) and extends from the filter cartridge (52) toward the refrigerant outlet (102). The side wall of the end cap (521) has a curved structure.

11. The compressor according to claim 2, characterized in that, The drive unit (30) includes a crankshaft (31) and a motor assembly (32). The motor assembly (32) is sleeved on the outer periphery of the crankshaft (31) and is drivenly connected to the crankshaft (31). A plurality of recesses (320) are provided at intervals along the circumference of the cavity (100) on the outer sidewall of the motor assembly (32). The recesses (320) extend along the axial direction of the cavity (100). The plurality of recesses (320) and the inner sidewall of the housing (10) form the flow channel (103). The crankshaft (31) has a lubricating oil passage. The lubricating oil passage has an oil slinger. The oil slinger is located at the end of the crankshaft (31). Along the axial direction of the cavity (100), the projection of the motor assembly (32) is located within the projection of the oil return cavity (404), the projection of the guide cavity (401) is located outside the projection of the recess (320) on the motor assembly (32), and the bottom of the guide cavity (401) has a second oil outlet (407).

12. The compressor according to claim 11, characterized in that, The compressor also includes an oil distribution component (60), which is disposed in the cavity (100) and located above the motor assembly (32). The oil distribution component (60) has a receiving cavity. The side of the oil distribution component (60) facing the motor assembly (32) is provided with a second oil inlet (601) and an oil return port (602). The second oil inlet (601) and the oil return port (602) are respectively connected to the receiving cavity. The end of the crankshaft (31) away from the motor assembly (32) passes through the second oil inlet (601). The oil slinger is located in the receiving cavity. Along the axial direction of the cavity (100), the projection of the oil distribution component (60) is located within the projection of the motor assembly (32).

13. The compressor according to claim 12, characterized in that, The oiling component (60) near the end of the motor assembly (32) abuts against the inner wall of the end of the motor assembly (32) away from the compression unit (20). The oiling component (60) includes a baffle (61) and an oiling plate (62). The baffle (61) extends axially along the cavity (100). The oiling plate (62) is disposed on the side of the baffle (61) facing the motor assembly (32). The second oil inlet (601) and the oil return port (602) are both disposed on the oiling plate (62). The baffle (61) and the oiling plate (62) form the receiving cavity. The oiling plate (62) is provided with a plurality of oil baffles (63) on the side facing the receiving cavity. The oil baffles (63) protrude from the surface of the oiling plate (62) and extend radially along the cavity (100) to divide the oiling plate (62) into a plurality of oiling areas. The oiling component (60) includes a plurality of oil return ports (602), and a plurality of oil return ports (602) are distributed in each of the oiling areas.

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