CN113623224B - Separation structure, compressor and air conditioner - Google Patents
Separation structure, compressor and air conditioner Download PDFInfo
- Publication number
- CN113623224B CN113623224B CN202111089113.XA CN202111089113A CN113623224B CN 113623224 B CN113623224 B CN 113623224B CN 202111089113 A CN202111089113 A CN 202111089113A CN 113623224 B CN113623224 B CN 113623224B
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- compressor
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- 238000000926 separation method Methods 0.000 title claims abstract description 47
- 239000012530 fluid Substances 0.000 claims abstract description 58
- 230000006835 compression Effects 0.000 claims abstract description 16
- 238000007906 compression Methods 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 239000010687 lubricating oil Substances 0.000 abstract description 13
- 238000009966 trimming Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 21
- 239000007789 gas Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000005520 cutting process Methods 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 230000003584 silencer Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000010725 compressor oil Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/028—Means for improving or restricting lubricant flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/026—Lubricant separation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressor (AREA)
Abstract
The application provides a separation structure, a compressor and an air conditioner, which comprise a rotating body, wherein the rotating body can rotate to separate gas and liquid of fluid; the rotating body is provided with a flow guide surface, the flow guide surface comprises a first flow guide surface and a second flow guide surface, and fluid flows through the first flow guide surface and the second flow guide surface in sequence; the second flow directing surface is capable of directing fluid flow in a direction proximate a center of rotation of the rotating body. According to the separation structure, the compressor and the air conditioner, the influence of gas discharged from the compression cavity on the lubricating oil flowing back from the trimming edge of the motor stator can be avoided.
Description
Technical Field
The application belongs to the technical field of air conditioners, and particularly relates to a separation structure, a compressor and an air conditioner.
Background
Room air conditioners are widely used in various fields at present, and among them, home room air conditioners mainly use a small rotor compressor.
However, according to the current research, it is found that the high-speed fluid discharged from the exhaust port of the compressor silencer is a mixture of refrigerant and refrigeration oil, and directly rushes to the upper cavity of the motor through the rotor circulation hole, the stator and rotor gap, etc., so that the exhaust and oil-spitting rate of the compressor is high, and the energy efficiency ratio of the whole refrigeration system is affected; and when fluid in the compression cavity flows upwards and passes through the stator assembly, lubricating oil on the edge cutting of the motor stator can be taken away, and the lubricating oil reflowing to the edge cutting of the motor stator is influenced.
Therefore, how to provide a separation structure, a compressor and an air conditioner which can avoid the influence of gas exhausted from a compression cavity on lubricating oil flowing back from the cutting edge of a motor stator becomes a problem to be solved by the technical personnel in the field.
Disclosure of Invention
Therefore, the technical problem that this application will be solved lies in providing a separation structure, compressor and air conditioner, can avoid the influence of compression chamber exhaust gas to the lubricating oil of motor stator side cut backward flow.
In order to solve the above problems, the present application provides a separation structure including a rotating body that is rotatable to perform gas-liquid separation of a fluid; the rotating body is provided with a flow guide surface, the flow guide surface comprises a first flow guide surface and a second flow guide surface, and fluid flows through the first flow guide surface and the second flow guide surface in sequence; the second flow directing surface is capable of directing fluid flow in a direction proximate a center of rotation of the rotating body.
Furthermore, the second flow guide surface and the first flow guide surface are oppositely arranged; the first flow directing surface is capable of directing fluid flow in a direction away from the center of rotation.
Further, the first flow guide surface is gradually sunken or protruded in a direction close to the rotation center; and/or the second flow guiding surface gradually protrudes in the direction close to the rotation direction.
Furthermore, the flow guide surface is also provided with a flow guide part which is used for guiding the fluid to flow towards the direction close to or far away from the rotating center of the rotating body.
Further, the flow guide part comprises a flow guide vane; the guide vane is arranged on the guide surface, and the thickness of the guide vane gradually increases from the end part to the middle part.
Furthermore, the guide vanes comprise first guide vanes and second guide vanes, and the first guide vanes are arranged on the first guide surface; the second guide vane is arranged on the second guide surface; the first guide vane is used for guiding the fluid to flow in a direction away from the rotation center; and/or the second guide vane is used for guiding the fluid to flow towards the direction close to the rotation center.
Further, the rotating directions of the first guide vane and the second guide vane are opposite; and/or the rotating direction of the second guide vane is consistent with the rotating direction of the rotating body.
According to still another aspect of the present application, there is provided a compressor including the separation structure described above.
Further, the compressor includes the pivot, is provided with the mounting hole on the rotating body, and the rotating body passes through the mounting hole cover to be established in the pivot to make the rotating body can rotate along with the pivot.
Further, the compressor also comprises a compression structure and a motor, and the rotating body is arranged between the motor and the compression structure.
According to still another aspect of the present application, there is provided an air conditioner including the separation structure described above.
The application provides a separation structure, compressor and air conditioner, the second water conservancy diversion face can guide the fluid to the direction flow of the rotation center that is close to rotating body, when this separation structure installs in compressor housing inside, the direction flow of second water conservancy diversion face guide fluid to the rotation center that is close to rotating body, can make the fluid that flows from the compression chamber flow to the motor epicoele through rotor opening and stator-rotor clearance, the effectual influence that upwards fluid was gone up to the lubricating oil of motor stator side cut backward flow that reduces. This application can avoid compression chamber combustion gas to the influence of the lubricating oil of motor stator side cut backward flow.
Drawings
FIG. 1 is a cross-sectional view of a separation structure according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a separation structure according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a separation structure according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a separation structure according to an embodiment of the present application;
FIG. 5 is a schematic structural diagram of a separation structure according to an embodiment of the present application;
FIG. 6 is a partial cross-sectional view of a compressor according to an embodiment of the present application;
fig. 7 is a schematic structural view of a compressor according to an embodiment of the present application.
The reference numbers are given as:
1. rotating the body; 11. a first flow guide surface; 12. a second flow guide surface; 2. a flow guide part; 21. a first guide vane; 22. a second guide vane; 31. a support leg; 32. a dispenser assembly; 331. an upper cover assembly; 332. a housing; 333. a lower cover; 34. a stator assembly; 35. a rotor assembly; 36. a crankshaft; 371. an upper flange; 372. a lower flange; 38. and a cylinder.
Detailed Description
Referring to fig. 1-7 in combination, a separation structure comprises a rotating body 1, wherein the rotating body 1 can rotate to separate gas from liquid in a fluid; the rotating body 1 is provided with a flow guide surface, the flow guide surface comprises a first flow guide surface 11 and a second flow guide surface 12, and fluid sequentially flows through the first flow guide surface 11 and the second flow guide surface 12; the second guide surface 12 can guide the fluid to flow towards the direction close to the rotation center of the rotating body 1, when the separating structure is installed inside the compressor shell 332, the second guide surface 12 guides the fluid to flow towards the direction close to the rotation center of the rotating body 1, so that the fluid flowing out of the compression cavity can flow to the upper cavity of the motor through the rotor flow hole and the stator and rotor gap, and the influence of the upward fluid on the lubricating oil flowing back from the cutting edge of the motor stator is effectively reduced. When the separation structure is arranged in the compressor, the oil discharge rate of the compressor is reduced and the refrigerating capacity of the compressor is improved through diversion and separation; the refrigeration oil is prevented from flowing along with the airflow and attaching to the surface of the compressor motor, so that the thermal resistance of the compressor motor is reduced, the heat exchange efficiency of the motor is improved, and the efficiency of the motor is improved; this application can also carry out oil-gas separation to the exhaust, reduces the compressor and tells oily rate, prevents that the compressor from lacking oil, promotes compressor performance and reliability.
The application also discloses some embodiments, the second flow guide surface 12 and the first flow guide surface 11 are oppositely arranged; the first guide surface 11 is capable of guiding the fluid to flow in a direction away from the center of rotation. The rotating body 1 has a rotation center line, the second guide surfaces 12 and the first guide surfaces 11 are arranged in order in the extending direction of the rotation center line, and the fluid flows in the extending direction of the rotation center line and passes through the first guide surfaces 11 and the second guide surfaces 12 in order. The rotating body 1 comprises a rotating disc, the rotating disc corresponds to an exhaust port of a compression cavity in the direction of a rotating central line, when gas is exhausted from the compression cavity and reaches the middle position of the first flow guide surface 11, the first flow guide surface 11 guides the gas to flow in the direction far away from the rotating center, and meanwhile, due to the rotation of the rotating disc, gas-liquid separation can be effectively carried out on fluid.
The application also discloses embodiments, the first flow guiding surface 11 is gradually concave or convex in the direction close to the rotation center; namely, the first guiding surface 11 is an inclined surface, namely, the first guiding surface 11 is a streamline guiding surface, and the middle part is slightly sunken or protruded upwards, so that the gas impact and the guiding are conveniently slowed down. When the gas reaches the first baffle surface 11, the baffle surface can reduce the vortex action or avoid the formation of vortex, thereby greatly reducing the resistance to the movement of the fluid. When the first flow guide surface 11 is gradually recessed in the direction close to the rotation center, the volume of the rotating body 1 is smaller, the axial direction of the whole structure is relatively short, the installation and the spatial arrangement in the compressor are facilitated, the installation is convenient, and the compressor is also suitable for small-space installation. The first guide surfaces 11 further reduce the flow resistance of the fluid as they gradually protrude in a direction close to the rotation center. This application rotating body 1 can be with the high-speed fluid of compressor muffler discharge upwards injection through first water conservancy diversion face 11 with its direction circumference, because first water conservancy diversion face 11 is sunken gradually or is outstanding in the direction that is close to the rotation center, can form the water conservancy diversion of axial and radial direction to the fluid simultaneously to, its centrifugal force makes the heavier oil droplet in the fluid isolate, gathers and flows back to the oil bath downwards through the casing wall.
The present application also discloses embodiments where the second deflector surface 12 gradually protrudes in the direction of the approaching rotation. Namely, on the longitudinal section of the rotating body 1, the first flow guiding surface 11 and the second flow guiding surface 12 are both in a herringbone shape. The flow resistance of the fluid is further reduced, and when the fluid flows from the first guide surface 11 to the second guide surface 12, the second guide surface 12 can guide the fluid to move in the axial direction, i.e. guide the fluid to continue flowing in the moving direction, and further reduce the flow resistance of the fluid.
The application also discloses some embodiments, still be provided with water conservancy diversion portion 2 on the water conservancy diversion face, water conservancy diversion portion 2 is used for leading fluid to the direction of being close to or keeping away from rotatory body 1 rotation center to flow.
The application also discloses some embodiments, the flow guiding part 2 comprises a flow guiding blade; the guide vane is arranged on the guide surface, and the thickness of the guide vane gradually increases from the end part to the middle part. The shape of the guide vane can also be other vanes, such as a flat plate. And the structure can reduce the flow resistance of the fluid and prevent the formation of vortex.
The application also discloses some embodiments, the guide vane comprises a first guide vane 21 and a second guide vane 22, the first guide vane 21 is arranged on the first guide surface 11; the second guide vane 22 is arranged on the second guide surface 12; the first guide vane 21 is used for guiding the fluid to flow in a direction away from the rotation center; and/or the second guide vane 22 is used to guide the fluid to flow in a direction close to the center of rotation. When the rotating body 1 rotates, the guide vanes can drive the fluid to flow in a direction close to or away from the rotation center. The number of the second guide vanes 22 is 6-10, and the whole vanes are streamline to reduce the flow loss in the guide process.
The application also discloses some embodiments, the rotation directions of the first guide vane 21 and the second guide vane 22 are opposite; and/or the rotation direction of the second guide vane 22 is consistent with the rotation direction of the rotating body 1. The guide vanes are all in a curve structure, and the rotating direction refers to the bending direction of the guide vanes. The second guide vane 22 has the same rotation direction, so that the gas is conveniently guided to the center, the fluid flows to the upper cavity of the motor through the rotor circulation hole and the stator and rotor gap, and the influence of the upward fluid on the lubricating oil reflowing from the cutting edge of the motor stator is reduced as much as possible. The first guide vane 21 can guide the fluid in the outer circumferential direction. The rotating body 1 is a disc body which can be a circular disc body, 6-10 first guide vanes 21 are arranged on a first guide surface 11 of the circular disc body, the first guide vanes 21 are also streamline, but the rotating direction of the first guide vanes 21 is opposite to that of the second guide vanes 22, and along with the rotation of disc body parts, gas exhausted by the silencer is guided to the circumferential direction; the upper and lower flow deflectors are arranged on the periphery of the disc body, so that uniform distribution is guaranteed, and interference with other part structures is avoided. The tray body can be made of light aluminum materials or high-strength light engineering plastics, so that the weight can be effectively reduced. The arrow direction in fig. 3 refers to the direction of rotation of the rotating body 1.
According to an embodiment of the present application, there is provided a compressor including a separation structure as described above. The compressor also comprises a pump body assembly, a shafting assembly, a motor assembly, a shell 332, a newly-added diversion separation disc and other parts. The liquid distributor specifically comprises a support leg 31, a liquid distributor assembly 32, an upper cover assembly 331, a machine shell 332, a stator assembly 34, a rotor assembly 35, a crankshaft 36, an upper flange 371 assembly, a cylinder 38, a lower flange 372 and a lower cover 333.
The application also discloses some embodiments, the compressor comprises a rotating shaft, the rotating body 1 is provided with a mounting hole, the rotating body 1 is sleeved on the rotating shaft through the mounting hole, so that the rotating body 1 can rotate along with the rotating shaft, the rotating body 1 is provided with a central circular hole to form the mounting hole, the mounting hole is the same as the outer diameter of the main shaft of the crankshaft 36, the mounting hole is connected and fixed in an interference fit manner, and if the mounting hole is installed in a cold pressing or hot sleeving manner, the mounting hole rotates along with the crankshaft 36 in the working process of the compressor; the separation structure can reduce the amount of the lubricating oil carried by the refrigerant to enter the upper cavity of the motor through the diversion and separation of the diversion blades, thereby reducing the oil spitting rate of the compressor and improving the refrigerating capacity of the compressor; meanwhile, the thickness of the oil film on the surface of the motor of the compressor is reduced, the thermal resistance is reduced, the heat exchange of the motor is improved, the power of the motor is reduced, and the performance of the compressor is improved; the oil discharge amount of the compressor is reduced, the oil shortage of the compressor is prevented, and the reliability of the compressor is improved.
The application also discloses some embodiments, and the compressor still includes compression structure and motor, and rotating body 1 sets up between motor and compression structure. The compressor is a rotor compressor, namely a diversion separation device is added in the lower cavity of a motor of the rotor compressor, and diversion and separation are carried out by utilizing upper blades of the diversion separation device, so that the oil discharge rate of the compressor is reduced, the refrigerating capacity of the compressor is improved, the surface thermal resistance of the motor is reduced, the heat exchange of the motor is improved, and the efficiency of the motor is improved, thereby improving the performance of the compressor; effectively reduce compressor oil extraction volume, prevent that the compressor from lacking oil, improve the reliability. Because the compressor performs oil-gas separation in the lower cavity of the motor in advance, the quality that lubricating oil carried by a refrigerant is attached to the surface of the motor is reduced, the thermal resistance of the motor is effectively reduced, the heat dissipation of the motor is improved, and the efficiency of the motor is improved; through diversion and rotation separation, the amount of lubricating oil carried by the refrigerant entering the upper cavity of the motor is effectively reduced, so that the oil spitting rate of the compressor is greatly improved, the compressor is prevented from being lack of oil, and the refrigerating capacity and the reliability of the compressor are improved.
In fig. 7, the arrow indicates the flow direction of the fluid, the high-speed fluid discharged upwards from the compressor muffler passes through the streamlined lower part of the disc body and the guide vanes spreading to the periphery, the fluid moves in the circumferential direction, and after the fluid passes through the axial gap between the disc body and the housing, a certain negative pressure is formed in the central area due to the guide effect of the vanes on the upper part of the disc body, and the fluid moves towards the center and finally flows to the upper cavity of the motor through the rotor flow hole and the stator-rotor gap.
In the working process of the compressor, a large amount of refrigerant with oil drops is discharged upwards by the silencer, fluid centrifugally moves through the diversion separation disc, oil drops with heavier components are thrown to the wall surface to be gathered and flow back to the oil pool downwards, and gas is guided to the central area through the guide vanes on the upper part and enters the upper cavity of the motor through the rotor circulation hole and the stator-rotor gap; because the oil-gas separation is carried out in advance in the diversion separation process, the oil discharge rate of the compressor is reduced, the cold quantity of the compressor is improved, the oil quantity discharged into the air conditioning system is reduced, the heat exchange resistance of the two devices is reduced, and the heat exchange efficiency is improved, so that the efficiency of the air conditioning system is improved; meanwhile, by pre-separation, less lubricating oil is carried by the fluid passing through the motor, the surface adhesion of the motor is reduced, the heat exchange resistance of the motor is reduced, the heat dissipation of the motor is improved, and the power of the motor is reduced; the oil discharge rate of the compressor is reduced, the oil shortage condition in the operation of the compressor is prevented, and the reliability of the compressor is improved.
According to an embodiment of the present application, there is provided an air conditioner including a separation structure as described above.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (10)
1. A separation structure, characterized by comprising a rotating body (1), the rotating body (1) being rotatable for gas-liquid separation of a fluid; the rotating body (1) is provided with a flow guide surface, the flow guide surface comprises a first flow guide surface (11) and a second flow guide surface (12), and the fluid sequentially flows through the first flow guide surface (11) and the second flow guide surface (12); the first flow guiding surface (11) can guide the fluid to flow in a direction away from the rotation center of the rotating body (1); the second flow guiding surface (12) can guide the fluid to flow towards the direction close to the rotation center of the rotating body (1); so that the fluid flowing out of the compression cavity flows to the upper cavity of the motor through the rotor circulation hole and the stator-rotor clearance, and the second flow guide surface (12) and the first flow guide surface (11) are arranged oppositely; the rotating body (1) is sleeved on the rotating shaft through the mounting hole, so that the rotating body (1) can rotate along with the rotating shaft.
2. The separation structure according to claim 1, wherein the first deflector surface (11) is gradually recessed or protruded in a direction close to the rotation center; and/or the second flow guiding surface (12) protrudes gradually in a direction close to the rotation center.
3. The separation structure according to claim 1, wherein the first flow guiding surface (11) and the second flow guiding surface (12) are provided with flow guiding portions (2), and the flow guiding portions (2) are used for guiding the fluid to flow towards a direction close to or far away from the rotation center of the rotating body (1).
4. A separating structure according to claim 3, characterized in that the flow guide (2) comprises a flow guide vane; the guide vanes are respectively arranged on the first guide surface (11) and the second guide surface (12), and the thickness of the guide vanes is gradually increased from the end parts to the middle part.
5. The separation structure according to claim 4, wherein the guide vanes comprise a first guide vane (21) and a second guide vane (22), the first guide vane (21) being arranged on the first guide surface (11); the second guide vane (22) is arranged on the second guide surface (12); the first guide vane (21) is used for guiding the fluid to flow in a direction away from the rotation center; and/or the second guide vane (22) is used for guiding the fluid to flow towards the direction close to the rotation center.
6. The separation structure according to claim 5, wherein the first guide vane (21) and the second guide vane (22) have opposite directions of rotation; and/or the rotating direction of the second guide vane (22) is consistent with the rotating direction of the rotating body (1).
7. A compressor comprising a separation structure, characterized in that the separation structure is according to any one of claims 1-6.
8. The compressor of claim 7, wherein the compressor comprises a rotating shaft, a mounting hole is formed in the rotating body (1), and the rotating body (1) is sleeved on the rotating shaft through the mounting hole, so that the rotating body (1) can rotate along with the rotating shaft.
9. Compressor according to claim 8, characterized in that it further comprises a compression structure and an electric motor, the rotating body (1) being arranged between said electric motor and said compression structure.
10. An air conditioner comprising a separation structure, wherein the separation structure is according to any one of claims 1-6.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202111089113.XA CN113623224B (en) | 2021-09-16 | 2021-09-16 | Separation structure, compressor and air conditioner |
Applications Claiming Priority (1)
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CN202111089113.XA CN113623224B (en) | 2021-09-16 | 2021-09-16 | Separation structure, compressor and air conditioner |
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CN113623224A CN113623224A (en) | 2021-11-09 |
CN113623224B true CN113623224B (en) | 2023-04-07 |
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Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS62199992A (en) * | 1986-02-28 | 1987-09-03 | Hitachi Ltd | Enclosed rotary compressor |
KR101324865B1 (en) * | 2007-07-31 | 2013-11-01 | 엘지전자 주식회사 | Rotary compressor |
DE102017105241B4 (en) * | 2017-03-13 | 2019-12-19 | Thyssenkrupp Ag | Centrifugal oil separator, oil separator and internal combustion engine |
DE202019102394U1 (en) * | 2019-04-29 | 2020-07-30 | Woco Industrietechnik Gmbh | Centrifugal separator |
CN213327475U (en) * | 2020-07-13 | 2021-06-01 | 中国石油天然气股份有限公司 | Gas-liquid separator |
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