CN114060283B - Rotor type compressor and air conditioner - Google Patents

Rotor type compressor and air conditioner Download PDF

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Publication number
CN114060283B
CN114060283B CN202111494147.7A CN202111494147A CN114060283B CN 114060283 B CN114060283 B CN 114060283B CN 202111494147 A CN202111494147 A CN 202111494147A CN 114060283 B CN114060283 B CN 114060283B
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CN
China
Prior art keywords
shaft body
bevel gear
crankshaft
compressor
rotation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202111494147.7A
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Chinese (zh)
Other versions
CN114060283A (en
Inventor
郭晓东
张文科
蔡庆波
曾鸿健
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Original Assignee
Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gree Green Refrigeration Technology Center Co Ltd of Zhuhai filed Critical Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority to CN202111494147.7A priority Critical patent/CN114060283B/en
Publication of CN114060283A publication Critical patent/CN114060283A/en
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Publication of CN114060283B publication Critical patent/CN114060283B/en
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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
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • F04C18/3562—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
    • 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
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • 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
    • F04C29/0021—Systems for the equilibration of forces acting on the pump
    • 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
    • F04C29/0092—Removing solid or liquid contaminants from the gas under pumping, e.g. by filtering or deposition; Purging; Scrubbing; Cleaning
    • 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
    • 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
    • F04C29/06—Silencing

Abstract

The invention provides a rotor type compressor and an air conditioner, wherein the rotor type compressor comprises a crankshaft assembly, the crankshaft assembly comprises a first crankshaft and a second crankshaft, the first crankshaft comprises a first shaft body and a first eccentric part arranged on the first shaft body, the second crankshaft comprises a second shaft body and a second eccentric part arranged on the second shaft body, the second shaft body is of a sleeve structure and sleeved on the outer peripheral side of the first shaft body, and the first crankshaft and the second crankshaft can be driven to rotate in opposite directions respectively. According to the invention, the reverse rotation of the compressor rotor is realized, the problem of compressor vibration caused by unbalanced force can be effectively avoided by utilizing the reverse rotation direction, and vibration noise can be reduced.

Description

Rotor type compressor and air conditioner
Technical Field
The invention belongs to the technical field of compressor manufacturing, and particularly relates to a rotor type compressor and an air conditioner.
Background
The double-rotor compressors used in the prior air conditioning system are all pump body structures which synchronously rotate in the same direction, and eccentric circles of crankshafts are distributed on two symmetrical sides and are used for counteracting a part of dynamic unbalanced force in the compression process. However, the vibration of the pump body is still large in the whole operation process, the operation of the compressor is unstable due to the large vibration, the use reliability of the compressor is affected, the supporting legs of the compressor are seriously broken, and accidents are induced.
Disclosure of Invention
Therefore, the invention provides a rotor type compressor and an air conditioner, which can overcome the defects of larger vibration and noise in the running process of the compressor in the related technology.
In order to solve the above problems, the present invention provides a rotor compressor, which comprises a crankshaft assembly, wherein the crankshaft assembly comprises a first crankshaft and a second crankshaft, the first crankshaft comprises a first shaft body and a first eccentric part arranged on the first shaft body, the second crankshaft comprises a second shaft body and a second eccentric part arranged on the second shaft body, the second shaft body is of a sleeve structure and is sleeved on the outer peripheral side of the first shaft body, and the first crankshaft and the second crankshaft can be respectively driven to rotate along opposite directions.
In some embodiments, the first shaft body is further provided with a first bevel gear, the second shaft body is further provided with a second bevel gear, the first bevel gear and the second bevel gear can be meshed with a third bevel gear at the same time, so that rotation of a first rotation direction of the first bevel gear is transferred to the second bevel gear, the second bevel gear forms rotation of a second rotation direction, and the first rotation direction is opposite to the second rotation direction.
In some embodiments, the rotor compressor further comprises an upper flange to which a first fixing member is connected, and the first shaft body is rotatably connected with the first fixing member; and/or the upper flange is connected with a second fixing piece, and the second shaft body is rotatably connected with the second fixing piece.
In some embodiments, a hugging structure is further arranged between the first shaft body and the second shaft body, and the hugging structure can enable the second shaft body to synchronously rotate along with the first shaft body; and/or the first fixing piece and the second fixing piece are connected into a whole.
In some embodiments, the third bevel gear is movable toward and away from the first and second bevel gears to effect tooth engagement and disengagement.
In some embodiments, the rotor compressor further includes a first vane corresponding to the first eccentric portion, a second vane corresponding to the second eccentric portion, the first vane and the second vane being symmetrically arranged about a rotational center axis of the first shaft; and/or, still include corresponding to the first cylinder of first eccentric part, correspond to the second cylinder of second eccentric part, have first suction channel on the first cylinder, have the second suction channel on the second cylinder, first suction channel with the second suction channel is arranged about the rotation center axle symmetry of first axis body.
In some embodiments, the rotor compressor further comprises a first knockout in communication with the first suction channel, a second knockout in communication with the second suction channel, the first knockout and the second knockout being symmetrically arranged about a rotational central axis of the first shaft.
In some embodiments, the first shaft body has a central oil passage configured to convey lubricating oil in an oil sump to a tooth position of at least one of the first bevel gear, the second bevel gear, and the third bevel gear.
In some embodiments, a third eccentric portion is further provided on the first shaft body.
The invention also provides an air conditioner comprising the rotor type compressor.
The rotor type compressor and the air conditioner provided by the invention realize the reverse rotation of the rotor of the compressor, can effectively avoid the occurrence of the vibration problem of the compressor caused by unbalanced force by utilizing the reverse rotation direction, and can reduce the vibration noise.
Drawings
Fig. 1 is a schematic view illustrating an internal structure of a rotor type compressor according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of the crankshaft assembly of FIG. 1 (including a third bevel gear);
FIG. 3 is a schematic view of the first crankshaft of FIG. 2;
FIG. 4 is a schematic structural view of the second crankshaft of FIG. 2;
fig. 5 is a schematic structural view of a crankshaft assembly (including a third bevel gear) of a rotor compressor according to another embodiment of the present invention.
The reference numerals are expressed as:
1. a first crankshaft; 11. a first shaft body; 12. a first eccentric portion; 13. a first bevel gear; 14. a first fixing member; 15. a first cylinder; 16. a first knockout; 17. a third eccentric portion; 2. a second crankshaft; 21. a second shaft body; 22. a second eccentric portion; 23. a second bevel gear; 24. a second fixing member; 25. a second cylinder; 26. a second knockout; 3. a third bevel gear; 41. a central oil passage; 42. a first radial oil hole; 43. a second radial oil passing hole; 100. an upper flange; 101. an oil pool; 102. a motor assembly; 103. a housing.
Detailed Description
Referring to fig. 1 to 5 in combination, according to an embodiment of the present invention, there is provided a rotor type compressor including a housing 103 having a pump body assembly provided therein, and a motor assembly 102, wherein the pump body assembly includes a first crankshaft 1 and a second crankshaft 2, wherein the first crankshaft 1 includes a first shaft body 11 and a first eccentric portion 12 provided on the first shaft body 11, the second crankshaft 2 includes a second shaft body 21 and a second eccentric portion 22 provided on the second shaft body 21, the second shaft body 21 is of a sleeve structure and is sleeved on an outer circumferential side of the first shaft body 11, the first crankshaft 1 and the second crankshaft 2 can be respectively driven to rotate in opposite directions, and the motor assembly 102 can provide power for respectively rotating the first crankshaft 1 and/or the second crankshaft 2. In this technical scheme, first bent axle 1 with second bent axle 2 can be driven respectively and follow opposite direction rotation, for example one is clockwise, and another is anticlockwise, so, realized the reverse rotation of compressor rotor, can utilize the opposite direction of rotation effectively to avoid the compressor vibration problem emergence that unbalanced force brought, and can reduce vibration noise.
The driving of the first crankshaft 1 and the second crankshaft 2 by independent rotation can be achieved by providing a set of motor assemblies 102 respectively, but this can certainly increase the manufacturing cost, and make the internal structure of the compressor become extremely complex, as a more preferable embodiment, the first shaft body 11 is further provided with a first bevel gear 13, the second shaft body 21 is further provided with a second bevel gear 23, the first bevel gear 13 and the second bevel gear 23 can be meshed with the third bevel gear 3 at the same time, so as to achieve that the rotation of the first rotation direction of the first bevel gear 13 is transferred to the second bevel gear 23, so that the second bevel gear 23 forms the rotation of the second rotation direction, and the first rotation direction is opposite to the second rotation direction.
It should be understood that the first crankshaft 1 and the second crankshaft 2 should be reliably fixed in position, and the positions herein refer to the axial positions and the radial positions thereof, and the rotatable positioning technique of the rotating shaft is well known in the field of manufacturing of compressors, and the present invention is not particularly limited, but preferably, the upper flange 100 of the rotor type compressor is connected with a first fixing member 14, and the first shaft body 11 is rotatably connected with the first fixing member 14; and/or, the upper flange 100 is connected with the second fixing member 24, and the second shaft body 21 is rotatably connected with the second fixing member 24, that is, the existing structural upper flange 100 in the compressor is used as a fixing carrier of the first fixing member 14 and the second fixing member 24, so that manufacturing cost can be reduced, for example, a manner of forming a fixed connection (for example, a separate fixing ring is designed) between the first fixing member 14 and the second fixing member 24 and the inner wall of the housing 103 can be naturally adopted, but this manner increases material cost on one hand, and occupies the inner wall space of the housing 103 on the other hand. Further, the first fixing member 14 is integrally connected with the second fixing member 24.
In some embodiments, the first bevel gear 13 and the second bevel gear 23 are both positioned between the pump body assembly and the motor assembly 102, so that high-pressure air flow discharged from the pump body assembly can be blocked by the first bevel gear 13 and the second bevel gear 23, thereby preventing vibration and noise caused by direct impact of compressed air flow on the motor assembly 102, and reducing the total vibration and noise of the whole compressor.
In some embodiments, a hugging structure is further provided between the first shaft body 11 and the second shaft body 21, the hugging structure can enable the second shaft body 21 to rotate synchronously with the first shaft body 11, and the hugging structure can adopt a clutch structure in the prior art, for example, so that the first shaft body 11 and the second shaft body 21 can rotate in the same direction, and the rotation direction of the compressor is richer. At this time, correspondingly, the third bevel gear 3 can move towards or away from the first bevel gear 13 and the second bevel gear 23 to achieve tooth engagement and disengagement, specifically, when the second bevel gear 23 needs to be driven to rotate by the first bevel gear 13, the third bevel gear 3 is made to approach to mesh, so as to achieve reverse rotation of the first crankshaft 1 and the second crankshaft 2, and at this time, the clasping structure does not clasp the first shaft body 11 and the second shaft body 21, so as to achieve the function of the double-cylinder compressor; when the second bevel gear 23 is not required to be driven by the first bevel gear 13, the two conditions can be further divided, wherein one condition is that the first shaft body 11 and the second shaft body 21 rotate in the same direction, and the enclasping structure enables the first shaft body 11 and the second shaft body 21 to enclasp and realizes the function of the double-cylinder compressor; the other is that the first shaft body 11 rotates, the second shaft body 21 does not rotate, at the moment, the enclasping structure does not enable the first shaft body 11 to enclasp with the second shaft body 21, the effect of the single-cylinder compressor is achieved, and at the moment, the compressor actually achieves variable capacity.
In some embodiments, the rotor type compressor further includes a first sliding vane corresponding to the first eccentric portion 12, a second sliding vane corresponding to the second eccentric portion 22, the first sliding vane and the second sliding vane being symmetrically arranged about a rotation center axis of the first shaft body 11; and/or, still include the first cylinder 15 corresponding to first eccentric part 12, the second cylinder 25 corresponding to second eccentric part 22, have first suction channel on the first cylinder 15, have the second suction channel on the second cylinder 25, first suction channel with the second suction channel is about the rotation center axis symmetry of first axis 11, further, rotor compressor still include with first knockout 16 that first suction channel communicates, with the second knockout 26 that second suction channel communicates, first knockout 16 with the second knockout 26 is about the rotation center axis symmetry of first axis 11, the whole pump body structure and the compressor outward appearance of compressor have both made symmetrical layout this moment, and the noise vibration of compressor can be greatly attenuated, accomplishes "extremely quiet" operation.
In some embodiments, the first shaft body 11 has a central oil passage 41, and the central oil passage 41 is capable of conveying the lubricating oil in the oil sump 101 to the tooth positions of at least one of the first bevel gear 13, the second bevel gear 23, and the third bevel gear 3 to lubricate the engagement positions of the three bevel gears, thereby reducing wear. Referring to fig. 1, the central oil passage 41 has a first radial oil passage 42 and a second radial oil passage 43, wherein the first radial oil passage 42 guides the lubricating oil in the central oil passage 41 to the adjacent position of the first bevel gear 13 and finally into the tooth portion thereof, and the second radial oil passage 43 guides the lubricating oil in the central oil passage 41 to the adjacent position of the second bevel gear 23 and finally into the tooth portion thereof.
In some embodiments, a third eccentric portion 17 is further disposed on the first shaft body 11 to adapt to the working condition of the three-cylinder compressor.
According to an embodiment of the present invention, there is also provided an air conditioner including the above rotor compressor.
It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.

Claims (8)

1. The rotor type compressor is characterized by comprising a crankshaft assembly, wherein the crankshaft assembly comprises a first crankshaft (1) and a second crankshaft (2), the first crankshaft (1) comprises a first shaft body (11) and a first eccentric part (12) arranged on the first shaft body (11), the second crankshaft (2) comprises a second shaft body (21) and a second eccentric part (22) arranged on the second shaft body (21), the second shaft body (21) is of a sleeve structure and sleeved on the outer peripheral side of the first shaft body (11), and the first crankshaft (1) and the second crankshaft (2) can be respectively driven to rotate along opposite directions; the first shaft body (11) is also provided with a first bevel gear (13), the second shaft body (21) is also provided with a second bevel gear (23), the first bevel gear (13) and the second bevel gear (23) can be meshed with a third bevel gear (3) at the same time, so that the rotation of the first bevel gear (13) in a first rotation direction is transmitted to the second bevel gear (23), the second bevel gear (23) forms the rotation of a second rotation direction, and the first rotation direction is opposite to the second rotation direction; the third bevel gear (3) can move towards or away from the first bevel gear (13) and the second bevel gear (23) to realize tooth engagement and disengagement.
2. The rotor compressor as recited in claim 1, further comprising an upper flange (100), a first fixing member (14) being connected to the upper flange (100), the first shaft body (11) being rotatably connected to the first fixing member (14); and/or, a second fixing piece (24) is connected to the upper flange (100), and the second shaft body (21) is rotatably connected with the second fixing piece (24).
3. Rotor compressor according to claim 2, characterized in that a hugging structure is also provided between the first shaft body (11) and the second shaft body (21), which hugging structure enables the second shaft body (21) to rotate synchronously following the first shaft body (11); and/or the first fixing piece (14) and the second fixing piece (24) are connected into a whole.
4. A rotor compressor according to any one of claims 1 to 3, further comprising a first slide corresponding to the first eccentric portion (12), a second slide corresponding to the second eccentric portion (22), the first slide and the second slide being symmetrically arranged about a rotation central axis of the first shaft body (11); and/or, still include corresponding to first cylinder (15) of first eccentric part (12), corresponding to second cylinder (25) of second eccentric part (22), have first suction channel on first cylinder (15), have second suction channel on second cylinder (25), first suction channel with second suction channel is arranged about the rotation center axis of first axis body (11) symmetry.
5. The rotor compressor according to any one of claims 4, further comprising a first dispenser (16) in communication with the first suction passage, a second dispenser (26) in communication with the second suction passage, the first dispenser (16) and the second dispenser (26) being symmetrically arranged about a rotational central axis of the first shaft body (11).
6. The rotor compressor according to claim 1, wherein the first shaft body (11) has a central oil passage (41), and the central oil passage (41) is capable of conveying lubricating oil in an oil sump (101) to a tooth position of at least one of the first bevel gear (13), the second bevel gear (23), and the third bevel gear (3).
7. Rotor compressor according to claim 1, characterized in that the first shaft body (11) is further provided with a third eccentric portion (17).
8. An air conditioner comprising the rotor compressor according to any one of claims 1 to 7.
CN202111494147.7A 2021-12-08 2021-12-08 Rotor type compressor and air conditioner Active CN114060283B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111494147.7A CN114060283B (en) 2021-12-08 2021-12-08 Rotor type compressor and air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111494147.7A CN114060283B (en) 2021-12-08 2021-12-08 Rotor type compressor and air conditioner

Publications (2)

Publication Number Publication Date
CN114060283A CN114060283A (en) 2022-02-18
CN114060283B true CN114060283B (en) 2024-03-08

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0791385A (en) * 1993-09-22 1995-04-04 Hitachi Ltd Coolant pump
CN204544683U (en) * 2014-12-03 2015-08-12 上海升广科技有限公司 A kind of electronic recoil analogue means
CN107191372A (en) * 2017-07-31 2017-09-22 广东美芝制冷设备有限公司 Rotary compressor and the refrigerating plant with it
CN207122423U (en) * 2017-08-31 2018-03-20 广东美芝制冷设备有限公司 Compressor and there is its refrigerating plant
CN111120321A (en) * 2018-10-31 2020-05-08 广东美芝制冷设备有限公司 Compressor and refrigerating system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0791385A (en) * 1993-09-22 1995-04-04 Hitachi Ltd Coolant pump
CN204544683U (en) * 2014-12-03 2015-08-12 上海升广科技有限公司 A kind of electronic recoil analogue means
CN107191372A (en) * 2017-07-31 2017-09-22 广东美芝制冷设备有限公司 Rotary compressor and the refrigerating plant with it
CN207122423U (en) * 2017-08-31 2018-03-20 广东美芝制冷设备有限公司 Compressor and there is its refrigerating plant
CN111120321A (en) * 2018-10-31 2020-05-08 广东美芝制冷设备有限公司 Compressor and refrigerating system

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