CN115596668A - Compressor crankshaft capable of reducing oil content load and rolling rotor compressor - Google Patents
Compressor crankshaft capable of reducing oil content load and rolling rotor compressor Download PDFInfo
- Publication number
- CN115596668A CN115596668A CN202211112862.4A CN202211112862A CN115596668A CN 115596668 A CN115596668 A CN 115596668A CN 202211112862 A CN202211112862 A CN 202211112862A CN 115596668 A CN115596668 A CN 115596668A
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- compressor
- oil
- crankshaft
- hole
- radial
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- 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
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- 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
-
- 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
- F04C29/021—Control systems for the circulation of the lubricant
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- 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
- F04C29/04—Heating; Cooling; Heat insulation
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- 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
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model provides a reduce compressor crankshaft and rolling rotor compressor of oil content load, compressor crankshaft includes the bent axle body, the centre bore has upwards been seted up along the axis to the bottom surface of bent axle body, the centre bore is the blind hole, the different high department processing of centre bore lateral wall has a plurality of radial oilhole, hollow pipe is installed to the radial oilhole at top, hollow pipe stretches into the inside length of centre bore and is greater than the oil film thickness of compressor operation centre bore wall, through blockking of the inside hollow pipe outer wall of centre bore, prevent that lubricating oil from discharging from the radial oilhole at top, only refrigerant gas is discharged by hollow pipe. The rolling rotor compressor adopts the compressor crankshaft, lubricating oil is introduced from a central hole of the crankshaft, and under the action of centrifugal force, the lubricating oil flows upwards along the wall of the central hole to form a paraboloid, and is thrown out from the radial oil hole to lubricate the upper end surface and the lower end surface of a compressor bearing and a piston. The invention can effectively reduce the oil load generated by the rolling rotor compressor at high rotating speed and reduce the oil discharge rate.
Description
Technical Field
The invention belongs to the field of compressors, and particularly relates to a compressor crankshaft and a rolling rotor compressor capable of reducing oil content load.
Background
The existing rolling rotor compressor develops towards high rotating speed and miniaturization, is beneficial to reducing the filling amount of combustible refrigerant, reduces the cost and meets the requirement of maximum refrigerating capacity. However, high speed operation causes friction, resulting in reduced efficiency, increased noise, and increased oil discharge. Lubricating oil plays important roles in refrigeration compressors such as cooling, sealing, corrosion prevention, noise level reduction, and maintenance of equilibrium pressure during non-circulation, so that sufficient lubricating oil must be secured in the compressor during operation. The oil-gas separation of the compressor refers to a process of separating lubricating oil drops from refrigerant gas in a process that a mixture of refrigerant and lubricating oil flows from bottom to top in a compressor shell. The oil entering the compressor shell, referred to as the separation load, is the primary factor affecting the compressor Oil Circulation Rate (OCR).
The oil supply structure of the compressor also influences the size of the oil content load, and further influences the oil-gas separation. The existing shaft center hole oil supply structures mainly comprise two types, wherein one shaft center hole is a through hole reaching the top of a crankshaft, the other shaft center hole is a blind hole and is provided with a radial oil hole, and the radial oil hole is arranged above the main bearing. There are three main sources of oil load: the oil is discharged from an outlet of a spiral oil groove of the main bearing; oil discharged from the top of the central hole of the crankshaft or the radial oil hole at the upper end of the crankshaft; and thirdly, oil enters the cylinder through a leakage gap between the sliding sheet and the end face of the piston (16) and is then discharged from the outlet of the silencer. When the rotation speed of the compressor is low, the second part oil load is 0; when the compressor speed is high or the displacement is large, the second part oil load is not negligible. When the central hole of the shaft is a through hole, the second part of oil content load directly enters the upper cavity of the motor, and a part of oil drops are separated under the action of gravity and fall back to the oil pool; another portion enters the system as the refrigerant gas exits the compressor. When the shaft center hole is a blind hole, the second part of oil content load is discharged to the lower cavity of the motor through the radial oil hole, one part of oil drops are separated under the action of gravity or centrifugal force in the lower cavity, the other part of oil drops are crushed into oil drops with smaller particle size, then the oil drops are carried by airflow to pass through flow channels such as a gap between a motor rotor and a stator, a gap between a stator winding and a gap between a housing wall and the motor stator, and finally one part of oil drops are discharged out of the compressor through the exhaust pipe. At high rotation speed, the increase of oil content load aggravates the difficulty of oil-gas separation, and lubricating oil discharged into an air conditioning system has adverse effects on a compressor and a heat exchanger. On one hand, the oil discharge reduces the liquid level of an oil pool and the oil supply amount, further increases the temperature rise of lubricating oil, reduces the viscosity, causes insufficient lubrication and aggravation of wear on the surface of a friction pair, and reduces the service life of parts; on the other hand, the oil discharge enables the lubricating oil to enter the heat exchanger pipeline, so that the problems of heat exchange resistance increase, flow resistance increase and the like occur, and the performance of the heat exchanger is reduced.
Disclosure of Invention
The invention aims to solve the problem of overhigh oil discharge rate of the rolling rotor compressor in the prior art, and provides a compressor crankshaft capable of reducing oil content load and the rolling rotor compressor, which can effectively reduce the oil load generated at high rotating speed of the rolling rotor compressor, are beneficial to oil-gas separation in a compressor shell and reduce the oil discharge rate.
In order to achieve the purpose, the invention provides a compressor crankshaft capable of reducing oil content load, which adopts the technical scheme that the crankshaft comprises a crankshaft body, wherein a central hole is formed in the bottom surface of the crankshaft body upwards along an axis, the central hole is a blind hole, a plurality of radial oil holes are formed in different heights of the side wall of the central hole, a hollow guide pipe is installed on the topmost radial oil hole, the length of the hollow guide pipe extending into the central hole is larger than the thickness of an oil film on the wall surface of the central hole when the compressor operates, lubricating oil is prevented from being discharged from the topmost radial oil hole through the blocking of the outer wall of the hollow guide pipe in the central hole, and only refrigerant gas is discharged from the hollow guide pipe.
Preferably, the hollow conduit is a hollow cylindrical conduit.
Preferably, the outer diameter of the hollow conduit is equal to the diameter of the radial oil hole in which the hollow conduit is installed.
As a preferable scheme, the hollow guide pipe and the radial oil hole are installed in an interference fit mode.
Preferably, the length of the hollow conduit extending into the central hole is 1/2 of the diameter of the central hole.
Preferably, the ratio of the inner diameter to the outer diameter of the hollow conduit is in the range of 1/4 to 1/2.
Preferably, the oil load of the radial direction oil hole at the topmost part of the center hole is 0.
The invention also provides a rolling rotor compressor, which adopts the compressor crankshaft for reducing the oil content load and comprises a compressor shell consisting of an upper cover, a cylinder body and a lower cover, wherein the top of the upper cover is provided with a hole and is provided with an exhaust pipe for exhausting high-temperature and high-pressure refrigerant gas; lubricating oil is introduced from a central hole of the crankshaft of the compressor, flows upwards along the wall of the central hole to form a paraboloid under the action of centrifugal force and is thrown out from the radial oil hole to lubricate the upper end surface and the lower end surface of a bearing and a piston of the compressor, the hollow guide pipe of the crankshaft of the compressor prevents the lubricating oil from being discharged from the radial oil hole at the top, and only refrigerant gas is discharged from the hollow guide pipe.
As a preferable scheme, four radial oil holes are processed at different heights on the side wall of the central hole of the compressor crankshaft, lubricating oil thrown out through the radial oil hole at the bottommost part lubricates the contact surface of the lower end surface of the rotating compressor crankshaft and the upper end surface of the lower bearing, and meanwhile, the joint of the piston and the lower bearing also plays a role in lubrication; lubricating oil thrown out from a radial oil hole at the eccentric part of the crankshaft of the compressor lubricates the eccentric parts of the piston and the crankshaft of the compressor, and meanwhile, the lubricating oil flowing downwards lubricates the end surface of the piston and the lubricating surface of the lower bearing; lubricating oil thrown out from the radial oil hole at the upper bearing is filled in a tool withdrawal groove on a compressor crankshaft, the inner surfaces of the upper bearing and the lower bearing rotate along with the compressor crankshaft, the lubricating oil rises from a spiral oil groove under the action of viscous force, fills the spiral oil groove, lubricates the whole contact surface, is discharged from the top of the spiral oil groove and enters a high-pressure shell; the topmost radial oil hole discharges only refrigerant gas through the hollow conduit, no lubricant oil is discharged, and the lubricant oil forms a paraboloid at the shaft center hole.
Compared with the prior art, the invention has the following beneficial effects:
when the rolling rotor compressor runs at a high rotating speed, lubricating oil is introduced from a central hole of the compressor crankshaft, flows upwards along the wall of the central hole to form a paraboloid under the action of centrifugal force, and is thrown out from the radial oil hole to lubricate the upper end surface and the lower end surface of a compressor bearing and a piston, so that the abrasion and the friction loss of parts are reduced. Because the hollow guide pipe is installed at the radial oil hole at the top, and the length of the hollow guide pipe extending into the center hole is larger than the thickness of an oil film on the wall surface of the center hole when the compressor runs at a high rotating speed, lubricating oil is effectively prevented from being discharged from the radial oil hole at the top, only refrigerant gas is discharged from the hollow guide pipe, the refrigerant gas can be smoothly discharged into a lower cavity of the motor, the increase of oil content load at the high rotating speed is avoided, the oil-gas separation in the compressor shell is facilitated, the oil discharge rate is effectively reduced, and the performance and the reliability of the compressor and the heat exchanger are improved.
Drawings
FIG. 1 is a schematic view of an overall assembly structure of a rolling rotor compressor according to an embodiment of the present invention;
FIG. 2 is a schematic end view of a hollow conduit according to an embodiment of the present invention;
FIG. 3 is a sectional view of a crankshaft structure of a compressor for reducing oil load according to an embodiment of the present invention;
FIG. 4 is a schematic view showing the flow directions of the lubricant and the refrigerant gas in the rolling rotor compressor according to the embodiment of the present invention;
in the drawings: 1, covering the cover; 2-a cylinder body; 3-a motor stator; 4-a motor rotor; 5-balancing weight; 6-crankshaft body; 7-a silencer; 8-an upper bearing; 9-a cylinder; 10-a lower bearing; 11-a lower cover; 12-an inspiratory cannula; 13-a reservoir; 14-an exhaust pipe; 15-a hollow conduit; 16-piston.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In order to effectively reduce the oil load generated by the rolling rotor compressor at high rotating speed and facilitate the oil-gas separation in the compressor shell, thereby reducing the oil discharge rate, the invention provides a compressor crankshaft and a rolling rotor compressor for reducing the oil load.
As shown in fig. 1, the rolling rotor compressor according to the embodiment of the present invention includes a housing assembly, a motor assembly, and a pump body assembly, wherein the housing assembly includes an upper cover 1, a cylinder 2, and a lower cover 11, which are welded together to form a rolling rotor compressor housing. The top of the upper cover 1 is provided with a hole and an exhaust pipe 14 for discharging high-temperature and high-pressure refrigerant gas, a motor stator 3 and a motor rotor 4 which are matched with each other are arranged in the shell of the compressor, and the motor rotor 4 provides rotary power for a crankshaft of the compressor. When the rolling rotor compressor provided by the embodiment of the invention works, lubricating oil is introduced from the central hole of the crankshaft of the compressor, under the action of centrifugal force, the lubricating oil overcomes gravity and surface tension, flows upwards along the wall of the central hole to form a paraboloid, and is thrown out through the radial oil hole to lubricate the upper end surface and the lower end surface of the compressor bearing and the piston 16, so that the abrasion and friction loss of parts are reduced.
As shown in fig. 2 and 3, an embodiment of the present invention provides a compressor crankshaft for reducing an oil content load, including a crankshaft body 6, where a central hole is formed in a bottom surface of the crankshaft body 6 upward along an axis, the central hole is a blind hole, four radial oil holes are processed at different heights on a side wall of the central hole, a hollow guide 15 is installed in a topmost radial oil hole, a length of the hollow guide 15 extending into the central hole is greater than a thickness of an oil film on a wall surface of the central hole when the compressor operates, when lubricating oil is thrown out through the radial oil holes, the topmost radial oil hole is blocked by an outer wall of the hollow guide 15 in the central hole due to the installation of the hollow guide 15, so that the lubricating oil can be prevented from being discharged from the topmost radial oil hole, and only refrigerant gas is discharged from the topmost radial oil hole of the crankshaft.
In one possible embodiment, the hollow conduit 15 is a hollow cylindrical conduit.
Further, the outer diameter of the hollow duct 15 is equal to the hole diameter of the radial oil hole in which it is installed.
Furthermore, the hollow guide pipe 15 and the radial oil hole are installed in an interference fit mode.
In one possible embodiment, the hollow conduit 15 extends into the interior of the central bore for a length of 1/2 of the diameter of the central bore.
In one possible embodiment, the ratio of the inner diameter to the outer diameter of the hollow conduit 15 ranges from 1/4 to 1/2.
In one possible embodiment, the oil load of the topmost radial oil hole of the center bore can be made 0 by providing a hollow conduit 15 to prevent the lubricating oil from being discharged from the topmost radial oil hole, and only the refrigerant gas is discharged from the hollow conduit 15.
The rolling rotor compressor of the invention adopts the compressor crankshaft, so that the lubricating oil is effectively prevented from being discharged from the radial oil hole at the top, meanwhile, the refrigerant gas can be smoothly discharged into the lower cavity of the motor, the oil quantity in the oil pool can be ensured under the working condition of high rotating speed, the problem of oil content load increase is solved, the oil discharge rate is effectively reduced, and the performance and the reliability of the compressor and the heat exchanger are improved.
The oil supply flow direction of the rolling rotor compressor adopting the compressor crankshaft is shown in fig. 4, the motor rotor 4 drives the crankshaft body 6 to rotate, lubricating oil overcomes gravity and surface tension under the action of centrifugal force, flows upwards along the wall of the crankshaft central hole to form a paraboloid, and is thrown out through the radial oil hole to lubricate the upper end face and the lower end face of the upper bearing 8, the lower bearing 10 and the piston 16, so that the abrasion and the friction loss of parts are reduced. The crankshaft body 6 of the embodiment is provided with four radial oil holes, lubricating oil thrown out through the radial hole at the lowest end lubricates the contact surface between the lower end surface of the rotating crankshaft and the upper end surface of the lower bearing 10, and meanwhile, the joint of the piston 16 and the lower bearing 10 also plays a role in lubrication; lubricating oil thrown out from the radial oil hole at the eccentric part on the shaft lubricates the piston 16 and the eccentric part along with the rotation of the crankshaft, and meanwhile, the lubricating oil flowing downwards lubricates the end surface of the piston 16 and the lubricating surface of the lower bearing 10; lubricating oil from the radial oil hole at the upper bearing 8 fills the tool withdrawal groove on the shaft, and because the inner surfaces of the upper bearing 8 and the lower bearing 10 rotate along with the crankshaft, the lubricating oil rises from the spiral oil groove under the action of viscous force, fills the spiral oil groove, lubricates the whole contact surface, and is discharged into and out of the high-pressure shell from the top of the spiral oil groove; by adopting the compressor crankshaft, only refrigerant gas flows out of the radial oil hole at the topmost part of the crankshaft, so that lubricating oil is prevented from flowing out of the radial oil hole at the topmost part, the oil content load is reduced, the oil discharge rate is effectively reduced, and the lubricating oil forms a paraboloid at the central hole of the shaft.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (9)
1. A compressor crankshaft for reducing oil load, comprising: the novel compressor crankshaft comprises a crankshaft body (6), wherein a central hole is formed in the bottom surface of the crankshaft body (6) upwards along the axis, the central hole is a blind hole, a plurality of radial oil holes are formed in the positions, with different heights, of the side wall of the central hole, a hollow guide pipe (15) is installed at the top radial oil hole, the length of the hollow guide pipe (15) extending into the inside of the central hole is larger than the thickness of an oil film on the wall surface of the central hole when the compressor runs, lubricating oil is prevented from being discharged from the top radial oil hole through blocking of the outer wall of the hollow guide pipe (15) in the central hole, and only refrigerant gas is discharged from the hollow guide pipe (15).
2. The compressor crankshaft for reducing oil content load according to claim 1, wherein: the hollow conduit (15) adopts a hollow cylindrical conduit.
3. The compressor crankshaft for reducing oil load according to claim 2, wherein: the outer diameter of the hollow conduit (15) is equal to the bore diameter of the radial oil hole in which the hollow conduit is installed.
4. The compressor crankshaft for reducing oil content load according to claim 3, wherein: the hollow guide pipe (15) and the radial oil hole are installed in an interference fit mode.
5. The compressor crankshaft for reducing oil content load according to claim 1, wherein: the length of the hollow guide pipe (15) extending into the central hole is 1/2 of the diameter of the central hole.
6. The compressor crankshaft for reducing oil load according to claim 1, wherein: the ratio of the inner diameter to the outer diameter of the hollow conduit (15) ranges from 1/4 to 1/2.
7. The compressor crankshaft for reducing oil content load according to claim 1, wherein: and the oil load of the radial oil hole at the topmost part of the central hole is 0.
8. A rolling rotor compressor characterized in that: the compressor crankshaft for reducing oil load according to any one of claims 1 to 7 is adopted, and comprises a compressor shell consisting of an upper cover (1), a cylinder body (2) and a lower cover (11), wherein the top of the upper cover (1) is provided with a hole and an exhaust pipe (14) for exhausting high-temperature and high-pressure refrigerant gas is arranged on the top of the upper cover, a motor stator (3) and a motor rotor (4) which are matched with each other are arranged in the compressor shell, and the motor rotor (4) provides rotary power for the compressor crankshaft; lubricating oil is introduced from the central hole of the crankshaft of the compressor, flows upwards along the wall of the central hole to form a paraboloid under the action of centrifugal force and is thrown out from the radial oil hole to lubricate the upper end surface and the lower end surface of a compressor bearing and a piston (16), the hollow guide pipe (15) of the crankshaft of the compressor prevents the lubricating oil from being discharged from the radial oil hole at the top, and only refrigerant gas is discharged from the hollow guide pipe (15).
9. A rolling rotor compressor in accordance with claim 8, wherein: four radial oil holes are processed on the side wall of the central hole of the compressor crankshaft at different heights, lubricating oil thrown out through the radial oil hole at the bottom lubricates the contact surface of the lower end surface of the rotating compressor crankshaft and the upper end surface of the lower bearing (10), and meanwhile, the joint of the piston (16) and the lower bearing (10) also plays a role in lubrication; lubricating oil thrown out from a radial oil hole at the eccentric part of the crankshaft of the compressor lubricates the eccentric part of the piston (16) and the crankshaft of the compressor, and meanwhile, the lubricating oil flowing downwards lubricates the end surface of the piston (16) and the lubricating surface of the lower bearing (10); lubricating oil thrown out from the radial oil hole at the upper bearing (8) is filled in a tool withdrawal groove on a compressor crankshaft, the inner surfaces of the upper bearing (8) and the lower bearing (10) rotate along with the compressor crankshaft, the lubricating oil rises from a spiral oil groove under the action of viscous force to fill the spiral oil groove, lubricates the whole contact surface, is discharged from the top of the spiral oil groove and enters a high-pressure shell; the topmost radial oil hole discharges only refrigerant gas through a hollow conduit (15) without lubricant, which forms a paraboloid at the shaft center hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211112862.4A CN115596668A (en) | 2022-09-14 | 2022-09-14 | Compressor crankshaft capable of reducing oil content load and rolling rotor compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211112862.4A CN115596668A (en) | 2022-09-14 | 2022-09-14 | Compressor crankshaft capable of reducing oil content load and rolling rotor compressor |
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| Publication Number | Publication Date |
|---|---|
| CN115596668A true CN115596668A (en) | 2023-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211112862.4A Pending CN115596668A (en) | 2022-09-14 | 2022-09-14 | Compressor crankshaft capable of reducing oil content load and rolling rotor compressor |
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| CN (1) | CN115596668A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09112240A (en) * | 1995-10-19 | 1997-04-28 | Mitsubishi Heavy Ind Ltd | Engine-driven air conditioner |
| JP2002089476A (en) * | 2000-09-20 | 2002-03-27 | Mitsubishi Electric Corp | Hermetic rotary compressor |
| JP2010185342A (en) * | 2009-02-12 | 2010-08-26 | Panasonic Corp | Rotary motor-driven compressor |
| CN102162451A (en) * | 2010-02-23 | 2011-08-24 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN106089710A (en) * | 2016-07-28 | 2016-11-09 | 广东美芝制冷设备有限公司 | Rotary compressor and there is its refrigerating circulatory device |
| CN205977674U (en) * | 2016-07-28 | 2017-02-22 | 广东美芝制冷设备有限公司 | Rotary compressor and have its refrigeration cycle device |
-
2022
- 2022-09-14 CN CN202211112862.4A patent/CN115596668A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09112240A (en) * | 1995-10-19 | 1997-04-28 | Mitsubishi Heavy Ind Ltd | Engine-driven air conditioner |
| JP2002089476A (en) * | 2000-09-20 | 2002-03-27 | Mitsubishi Electric Corp | Hermetic rotary compressor |
| JP2010185342A (en) * | 2009-02-12 | 2010-08-26 | Panasonic Corp | Rotary motor-driven compressor |
| CN102162451A (en) * | 2010-02-23 | 2011-08-24 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN106089710A (en) * | 2016-07-28 | 2016-11-09 | 广东美芝制冷设备有限公司 | Rotary compressor and there is its refrigerating circulatory device |
| CN205977674U (en) * | 2016-07-28 | 2017-02-22 | 广东美芝制冷设备有限公司 | Rotary compressor and have its refrigeration cycle device |
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