CN104632636A - Compressor, cooling method of compressor and cold-water air conditioning unit - Google Patents
Compressor, cooling method of compressor and cold-water air conditioning unit Download PDFInfo
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- CN104632636A CN104632636A CN201410060756.5A CN201410060756A CN104632636A CN 104632636 A CN104632636 A CN 104632636A CN 201410060756 A CN201410060756 A CN 201410060756A CN 104632636 A CN104632636 A CN 104632636A
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Abstract
The invention provides a compressor, a cooling method of the compressor and a cold-water air conditioning unit. The compressor comprises a motor, a power shaft, a supporting device and a cooling device, wherein the power shaft is connected with the motor in a driving manner, the supporting device comprises at least one electromagnetic bearing for supporting the power shaft, and the cooling device comprises a bearing cooling unit for cooling at least one electromagnetic bearing by utilizing a cooling agent. By utilizing the technical scheme, the temperature of the electromagnetic bearing can be lowered by virtue of the cooling unit, so that the problem that the performance of the compressor is decreased due to the rising temperature of the electromagnetic bearing can be effectively solved.
Description
Technical field
The present invention relates to art of refrigeration units, more specifically, relate to a kind of compressor, the cool-down method of compressor and cold water formula air-conditioner set.
Background technique
When magnetic suspension centrifugal compressor normally runs, electromagnetic bearing, motor all can generate heat in the energized state, wherein, motor is main heater element, the relative motor of electromagnetic bearing, heating value is little, if but these heats take away not in time, the coil temperature of bearing, motor will constantly raise, magnetic signature will change, and compressor performance can decline greatly, when the limiting value of coil temperature higher than coil insulation, coil insulation will be caused to damage, and compressor cannot normally run.
Therefore, in order to ensure that compressor normally runs, coil temperature just must be made to maintain in allowed band, just must as early as possible heat be taken away.Owing to also relating to electromagnetic bearing in magnetic suspension centrifugal compressor, therefore, must cool electromagnetic bearing, and the optimization of cooling system will be carried out between bearing cooling and motor cooling, when the requirement of satisfied cooling, make cooling liquid supply rate minimum, reach energy-conservation object.So, for the internal cooling problem of magnetic suspension centrifugal compressor, be necessary that design is a set of and can meet cooling and can meet energy-conservation system again.
Summary of the invention
The present invention aims to provide a kind of compressor, the cool-down method of compressor and cold water formula air-conditioner set, to reduce the problem of the hydraulic performance decline brought because of heating in compressor operation.
To achieve these goals, the invention provides a kind of compressor, compressor comprises: motor; Line shaft, line shaft is connected with motor-driven; Bearing device, bearing device comprises at least one electromagnetic bearing of supporting line shaft; Cooling unit, cooling unit comprise utilize freezing mixture be at least one electromagnetic bearing cooling bearing cooling unit.
Further, at least one electromagnetic bearing comprises the first electromagnetism radial bearing, and the first electromagnetism radial bearing is supported on the first end of line shaft; Bearing cooling unit comprise utilize freezing mixture be first electromagnetism radial bearing cooling the first cooling unit, first cooling unit comprises the first coolant inlet and the first coolant channel, the import of the first coolant channel communicates with the first coolant inlet, and the outlet of the first coolant channel is towards motor and for guiding the gap between the stator of motor and rotor into by freezing mixture.
Further, bearing device also comprises the first interference preventer be arranged between the first electromagnetism radial bearing and motor, and the outlet of the first coolant channel is arranged on the first interference preventer.
Further, bearing device also comprises the clutch shaft bearing housing be arranged on outside the first electromagnetism radial bearing and the first dividing plate be connected with clutch shaft bearing housing, first coolant channel comprises multiple first bulkhead through-holes be arranged on the first dividing plate, and multiple first bulkhead through-hole is all arranged at the position corresponding with the coil of the first electromagnetism radial bearing.
Further, multiple first bulkhead through-hole is arranged equably along the circumference of line shaft.
Further, bearing device also comprises: aiding support module, and aiding support module and line shaft are arranged coaxially; Testing module, testing module and line shaft are arranged coaxially, wherein, aiding support module and testing module are all positioned at the side relative with the first electromagnetism radial bearing of the first dividing plate, the cavity that the outer circumferential face of aiding support module and testing module and the inner peripheral surface of clutch shaft bearing housing are formed all communicates with multiple first bulkhead through-hole, and cavity communicates with the first coolant inlet.
Further, at least one electromagnetic bearing also comprises the second electromagnetism radial bearing, and the second electromagnetism radial bearing is supported on the second end of line shaft; Bearing cooling unit also comprise utilize freezing mixture be second electromagnetism radial bearing cooling the second cooling unit, second cooling unit comprises the second coolant inlet and the second coolant channel, the import of the second coolant channel communicates with the second coolant inlet, and the outlet of the second coolant channel is towards motor.
Further, bearing device also comprises the second interference preventer be arranged between the second electromagnetism radial bearing and motor, and the outlet of the second coolant channel is arranged on the second interference preventer.
Further, bearing device also comprises the second bearing housing be arranged on outside the second electromagnetism radial bearing and the second partition be connected with the second bearing housing, and the second coolant channel comprises the multiple second partition through holes be arranged on second partition.
Further, bearing device also comprises baffle plate, and baffle plate is positioned at the second end of line shaft; At least one electromagnetic bearing also comprises magnetic thrust bearing, and magnetic thrust bearing is positioned at the second end of line shaft, and magnetic thrust bearing abuts with baffle plate; Second coolant channel comprises the gap being opened in multiple baffle plate through hole on baffle plate and magnetic thrust bearing.
Further, multiple baffle plate through hole is arranged equably along the circumference of line shaft.
Further, compressor also comprises the motor cooling unit utilizing freezing mixture to be electric motor temperature reduction, and motor cooling unit comprises: the 3rd coolant inlet; First cooling flowing path, the first cooling flowing path is arranged on the stator periphery of motor, and the import of the first cooling flowing path communicates with the 3rd coolant inlet; Second cooling flowing path, the second cooling flowing path is the gap between the stator of motor and rotor, and the import of the second cooling flowing path communicates with the outlet of the first cooling flowing path.
Further, compressor also comprises the first housing being located at motor periphery, and the outer circumferential face of the stator of motor abuts with the inner peripheral surface of the first housing, and the first cooling flowing path is be opened in the spiral groove on the inner peripheral surface of the first housing.
Further, cooling unit also comprises the coolant outlet of the freezing mixture for drawing the first cooling unit and the second cooling unit, and wherein, the freezing mixture of motor cooling unit is drawn from coolant outlet.
According to a further aspect in the invention, provide a kind of cold water formula air-conditioner set, cold water formula air-conditioner set comprises above-mentioned compressor.
Further, compressor is centrifugal compressor.
According to a further aspect in the invention, provide a kind of cool-down method of compressor, compressor comprises motor, the line shaft be connected with motor-driven and supports at least one electromagnetic bearing of line shaft, from the outside introducing freezing mixture of compressor, cool-down method comprises thinks that at least one electromagnetic bearing is lowered the temperature.
Further, at least one electromagnetic bearing comprises the first electromagnetism radial bearing of the first end being supported on line shaft, and the freezing mixture at least partially in freezing mixture flows through the gap of the first electromagnetism radial bearing and the gap between the stator of motor and rotor.
Further, at least one electromagnetic bearing also comprises the second electromagnetism radial bearing, and the second electromagnetism radial bearing is supported on the second end of line shaft, and the freezing mixture at least partially in freezing mixture flows through the gap of the second electromagnetism radial bearing.
Further, at least one electromagnetic bearing also comprises the second electromagnetism radial bearing and magnetic thrust bearing, second electromagnetism radial bearing and magnetic thrust bearing are all supported on the second end of line shaft, and the freezing mixture at least partially in freezing mixture flows out compressor after flowing through the gap of magnetic thrust bearing and the gap of the second electromagnetism radial bearing successively.
Further, compressor also comprises the motor cooling unit utilizing freezing mixture to be electric motor temperature reduction, for the freezing mixture for electric motor temperature reduction, for the freezing mixture for the first electromagnetism radial bearing cooling with for being introduced by different imports respectively for the freezing mixture of the second electromagnetism radial bearing cooling.
Further, for for electric motor temperature reduction freezing mixture, for for first electromagnetism radial bearing cooling freezing mixture and for for second electromagnetism radial bearing cooling freezing mixture drawn by same coolant outlet.
Apply technological scheme of the present invention, compressor comprises motor, line shaft, bearing device and cooling unit, line shaft is connected with motor-driven, bearing device comprise supporting line shaft at least one electromagnetic bearing, cooling unit comprise utilize freezing mixture be at least one electromagnetic bearing cooling bearing cooling unit.Apply technological scheme of the present invention, cooling unit reduces the temperature of electromagnetic bearing, efficiently solves the problem of the hydraulic performance decline of the compressor caused because of the temperature rising of electromagnetic bearing.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation of the compressor of the embodiment of the present invention;
Fig. 2 shows the structural representation in the cross section at the A-A place of Fig. 1.
Reference character: 1, motor; 2, line shaft; 31, the first electromagnetism radial bearing; 34, the first dividing plate; 341, the first bulkhead through-hole; 35, the first interference preventer; 41, the second electromagnetism radial bearing; 44, second partition; 441, second partition through hole; 45, the second interference preventer; 46, baffle plate; 5, magnetic thrust bearing; 51, frontly magnetic thrust bearing is pushed away; 52, thrust disc; 53, pusher magnetic thrust bearing.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figure 1, the compressor of the present embodiment comprises motor 1, line shaft 2, bearing device and cooling unit.Line shaft 2 and motor 1 are in transmission connection.Bearing device comprises at least one electromagnetic bearing supporting described line shaft 2.Cooling unit comprise utilize freezing mixture be at least one electromagnetic bearing cooling bearing cooling unit.
From the outside introducing freezing mixture of compressor, the cool-down method of the present embodiment comprises thinks that at least one electromagnetic bearing is lowered the temperature.
Along with the prolongation of compressor operating time, the temperature of the coil of electromagnetic bearing constantly rises, and magnetic signature changes, compressor performance can decline greatly, when the limiting value of coil temperature higher than coil insulation, coil insulation will be caused to damage, and compressor cannot normally run.The coil utilizing freezing mixture to be electromagnetic bearing is lowered the temperature, and significantly reduces the temperature of electromagnetic bearing, improves the stability of compressor.
In the present embodiment, freezing mixture is the refrigerant introduced from condenser or the economizer of air-conditioner set.Flow through electromagnetic bearing also for the refrigerant after electromagnetic bearing cooling flows back in the circulatory system of air-conditioner set.Refrigerant constantly upgrades, and ensure that the refrigerant temperature for lowering the temperature for electromagnetic bearing remains on lower level.Further, improve the cooling-down effect of cooling unit to electromagnetic bearing.Introduce refrigerant from train condenser or economizer, after refrigerant enters enclosure interior, be evaporated to the gas of low pressure, low temperature because pressure declines suddenly, because gas autologous density is little, naturally rise, save the Driving force of additional flow.
At least one electromagnetic bearing comprises the first end that the first electromagnetism radial bearing 31, first electromagnetism radial bearing 31 is supported on line shaft 2.
Freezing mixture at least partially in freezing mixture flows through the gap of the first electromagnetism radial bearing 31 and the gap between the stator of motor 1 and rotor.
Bearing cooling unit comprise utilize freezing mixture be first electromagnetism radial bearing 31 lower the temperature the first cooling unit, first cooling unit comprises the first coolant inlet and the first coolant channel, the import of the first coolant channel communicates with the first coolant inlet, and the outlet of the first coolant channel is towards motor 1 and for guiding the gap between the stator of motor 1 and rotor into by freezing mixture.
The outlet that bearing device also comprises the first interference preventer 35, first coolant channel be arranged between the first electromagnetism radial bearing 31 and motor 1 is arranged on the first interference preventer 35.
The gap between the stator of motor 1 and rotor will be guided into as the refrigerant of freezing mixture.Effectively, reduce the temperature of motor 1, ensure that the normal operation of motor 1.Improve the stability of compressor.
Bearing device also comprises the clutch shaft bearing housing be arranged on outside the first electromagnetism radial bearing 31 and the first dividing plate 34 be connected with clutch shaft bearing housing, first coolant channel comprises multiple first bulkhead through-holes 341 be arranged on the first dividing plate 34, and multiple first bulkhead through-hole 341 is all arranged at the position corresponding with the coil of the first electromagnetism radial bearing 31.
Multiple first bulkhead through-hole 341, using being delivered to the coil of electromagnetic bearing as the refrigerant of freezing mixture, significantly reducing the temperature of the coil of the first electromagnetism radial bearing, improves the stability of the first electromagnetism radial bearing 31.
Preferably, multiple first bulkhead through-hole 341 is arranged equably along the circumference of line shaft 2.
As shown in Figure 2, multiple first bulkhead through-hole 341 is arranged equably along the circumference of line shaft 2, more significantly reduces the temperature of the coil of electromagnetic bearing.Distance between two adjacent the first bulkhead through-holes 341 is larger, poorer to the cooling-down effect of the first electromagnetism radial bearing.Distance between two adjacent the first bulkhead through-holes 341 is L, L < 35mm.
In the present embodiment, bearing device also comprises aiding support module and testing module.Aiding support module and line shaft 2 are arranged coaxially.Testing module and line shaft 2 are arranged coaxially.Aiding support module and testing module are all positioned at the side relative with the first electromagnetism radial bearing 31 of the first dividing plate 34, the cavity that the outer circumferential face of aiding support module and testing module and the inner peripheral surface of clutch shaft bearing housing are formed all communicates with multiple first bulkhead through-hole 341, and this cavity communicates with the first coolant inlet.
The end face of the first electromagnetism radial bearing 31 abuts with the first dividing plate 34.First refrigerant for cooling the first electromagnetism radial bearing 31 enters cavity, is then flowed to the coil of the first electromagnetism radial bearing 31 by multiple first bulkhead through-hole 341.Then through the gap between the stator of the outlet flow direction motor 1 of the first cooling channel being arranged on the first interference preventer 35 and rotor.
In the present embodiment, at least one electromagnetic bearing also comprises the second end that the second electromagnetism radial bearing 41, second electromagnetism radial bearing 41 is supported on line shaft 2.
Bearing cooling unit also comprise utilize freezing mixture be second electromagnetism radial bearing 41 lower the temperature the second cooling unit, second cooling unit comprises the second coolant inlet and the second coolant channel, the import of the second coolant channel communicates with the second coolant inlet, and the outlet of the second coolant channel is towards motor 1.
Freezing mixture at least partially in freezing mixture flows through the gap of the second electromagnetism radial bearing 41.
The outlet that bearing device also comprises the second interference preventer 45, second coolant channel be arranged between the second electromagnetism radial bearing 41 and motor 1 is arranged on the second interference preventer 45.
As the refrigerant of freezing mixture after the second coolant inlet and the second coolant channel, the cavity between flow direction motor 1 and the second interference preventer 45.For for first electromagnetism radial bearing 31 lower the temperature the stator of freezing mixture through motor 1 and the cavity of gap also between flow direction motor 1 and the second interference preventer 45 of rotor.
Bearing device also comprises the second bearing housing be arranged on outside the second electromagnetism radial bearing 41 and second partition 44, second coolant channel be connected with the second bearing housing comprises the multiple second partition through holes 441 be arranged on second partition 44.
Directly flow to the coil of the second electromagnetism radial bearing 41 through multiple second partition through hole 441 for the freezing mixture for the second electromagnetism radial bearing 41 cooling.Effectively, improve the cooling-down effect of the coil to the second electromagnetism radial bearing 41.
Bearing device also comprises baffle plate 46, and baffle plate 46 is positioned at the second end of line shaft 2.At least one electromagnetic bearing also comprises magnetic thrust bearing 5, and magnetic thrust bearing is positioned at the second end of line shaft 2, and magnetic thrust bearing 5 abuts with baffle plate 46.Second coolant channel comprises the gap being opened in multiple baffle plate through hole on baffle plate 46 and magnetic thrust bearing 5.
Magnetic thrust bearing 51 and the front thrust disc 52 pushing away the spaced pusher magnetic thrust bearing 53 of magnetic thrust bearing and push away before being arranged between magnetic thrust bearing 51 and pusher magnetic thrust bearing 53 is pushed away before magnetic thrust bearing comprises.
Second electromagnetism radial bearing 41 and magnetic thrust bearing 5 lay respectively at the both sides of second partition 44.Freezing mixture at least partially in freezing mixture flows out compressor after flowing through the gap of magnetic thrust bearing 5 and the gap of the second electromagnetism radial bearing 41 successively.First freezing mixture for lowering the temperature for the second electromagnetism radial bearing 41 flows to the gap of magnetic thrust bearing 5 through the multiple baffle plate through holes be arranged on baffle plate 46, then the coil of the second electromagnetism radial bearing 41 is flowed to through the second partition through hole 441 be arranged on second partition 44, again, through being arranged on the cavity between the outlet flow direction motor 1 of the second cooling channel on the second interference preventer 45 and the second interference preventer 45.
For the freezing mixture for the second electromagnetism radial bearing 41 cooling in the process flowing through magnetic thrust bearing 5, reduce the temperature of magnetic thrust bearing, improve the stability of magnetic thrust bearing 5.
Multiple baffle plate through hole is arranged equably along the circumference of line shaft 2.Further improve the cooling-down effect to magnetic thrust bearing.
Compressor also comprises the motor cooling unit utilizing freezing mixture to lower the temperature for motor 1, and motor cooling unit comprises the 3rd coolant inlet, the first cooling flowing path and the second cooling flowing path.First cooling flowing path is arranged on the stator periphery of motor 1, and the import of the first cooling flowing path communicates with the 3rd coolant inlet.Second cooling flowing path is the gap between the stator of motor 1 and rotor, and the import of the second cooling flowing path communicates with the outlet of the first cooling flowing path.
For lower the temperature for motor 1 freezing mixture, for for first electromagnetism radial bearing 31 lower the temperature freezing mixture and for for second electromagnetism radial bearing 41 lower the temperature freezing mixture introduced by different imports respectively.
Compressor also comprises the first housing being located at motor 1 periphery, and the outer circumferential face of the stator of motor 1 abuts with the inner peripheral surface of the first housing, and the first cooling flowing path is be opened in the spiral groove on the inner peripheral surface of the first housing.
Freezing mixture flows through the periphery of motor spirally from one end of motor 1, the gap between the rotor and stator of the other end flow direction motor of motor, the cavity then between flow direction motor 1 and the second interference preventer 45.Freezing mixture flows through in the process of the periphery of motor 1 spirally, significantly reduces the temperature of motor 1.From the freezing mixture that the first cooling flowing path flows out, the gap between the rotor of flow direction motor 1 and stator, reduces the temperature of the coil of motor 1 further.
First cooling flowing path is be opened in the groove on the first housing, is conducive to the structure simplifying compressor.Reduce the part of compressor, reduce the complexity of compressor bank process of assembling.
Groove is be arranged on the spiral groove on the inner peripheral surface of the first housing.Effectively increase the area of contact having arrived freezing mixture and motor 1.Further, improve the cooling-down effect to motor 1.Be conducive to the stability improving compressor.
Cooling unit also comprises the coolant outlet of the freezing mixture for drawing the first cooling unit and the second cooling unit, and wherein, the freezing mixture of motor cooling unit is drawn from coolant outlet.
Coolant outlet communicates with the cavity between motor 1 with the second interference preventer 45.
As the refrigerant of freezing mixture after the first coolant inlet and the first coolant channel, the cavity between flow direction motor 1 and the second interference preventer 45.
As the refrigerant of freezing mixture after the second coolant inlet and the second coolant channel, the cavity between flow direction motor 1 and the second interference preventer 45.
For lower the temperature for motor 1 freezing mixture, for for first electromagnetism radial bearing 31 lower the temperature freezing mixture and for for second electromagnetism radial bearing 41 lower the temperature freezing mixture drawn by same coolant outlet.
The present embodiment additionally provides a kind of cold water formula air-conditioner set, and this cold water formula air-conditioner set comprises above-mentioned compressor.Further, above-mentioned compressor is centrifugal compressor.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (22)
1. a compressor, is characterized in that, described compressor comprises:
Motor (1);
Line shaft (2), described line shaft (2) and described motor (1) are in transmission connection;
Bearing device, described bearing device comprises at least one electromagnetic bearing of the described line shaft of supporting (2);
Cooling unit, described cooling unit comprises and utilizes freezing mixture to be the bearing cooling unit of at least one electromagnetic bearing described cooling.
2. compressor according to claim 1, is characterized in that,
At least one electromagnetic bearing described comprises the first electromagnetism radial bearing (31), and described first electromagnetism radial bearing (31) is supported on the first end of described line shaft (2);
Described bearing cooling unit comprises and utilizes freezing mixture to be the first cooling unit that described first electromagnetism radial bearing (31) is lowered the temperature, described first cooling unit comprises the first coolant inlet and the first coolant channel, the import of described first coolant channel communicates with described first coolant inlet, and the outlet of described first coolant channel is towards described motor (1) and for guiding the gap between the stator of described motor (1) and rotor into by described freezing mixture.
3. compressor according to claim 2, it is characterized in that, described bearing device also comprises the first interference preventer (35) be arranged between described first electromagnetism radial bearing (31) and described motor (1), and the described outlet of described first coolant channel is arranged on described first interference preventer (35).
4. compressor according to claim 2, it is characterized in that, described bearing device also comprises and is arranged on described first electromagnetism radial bearing (31) clutch shaft bearing housing outward and the first dividing plate (34) be connected with described clutch shaft bearing housing, described first coolant channel comprises multiple first bulkhead through-holes (341) be arranged on described first dividing plate (34), and described multiple first bulkhead through-hole (341) is all arranged at the position corresponding with the coil of described first electromagnetism radial bearing (31).
5. compressor according to claim 4, is characterized in that, described multiple first bulkhead through-hole (341) is arranged equably along the circumference of described line shaft (2).
6. compressor according to claim 4, is characterized in that, described bearing device also comprises:
Aiding support module, described aiding support module and described line shaft (2) are arranged coaxially;
Testing module, described testing module and described line shaft (2) are arranged coaxially,
Wherein, described aiding support module and described testing module are all positioned at the side relative with described first electromagnetism radial bearing (31) of described first dividing plate (34), the cavity that outer circumferential face and the inner peripheral surface of described clutch shaft bearing housing of described aiding support module and described testing module are formed all communicates with described multiple first bulkhead through-hole (341), and described cavity communicates with described first coolant inlet.
7. the compressor according to any one of claim 2 to 6, is characterized in that,
At least one electromagnetic bearing described also comprises the second electromagnetism radial bearing (41), and described second electromagnetism radial bearing (41) is supported on the second end of described line shaft (2);
Described bearing cooling unit also comprises and utilizes freezing mixture to be the second cooling unit that described second electromagnetism radial bearing (41) is lowered the temperature, described second cooling unit comprises the second coolant inlet and the second coolant channel, the import of described second coolant channel communicates with described second coolant inlet, and the outlet of described second coolant channel is towards described motor.
8. compressor according to claim 7, it is characterized in that, described bearing device also comprises the second interference preventer (45) be arranged between described second electromagnetism radial bearing (41) and described motor (1), and the described outlet of described second coolant channel is arranged on described second interference preventer (45).
9. compressor according to claim 7, it is characterized in that, described bearing device also comprises and is arranged on described second electromagnetism radial bearing (41) the second bearing housing outward and the second partition (44) be connected with described second bearing housing, and described second coolant channel comprises the multiple second partition through holes (441) be arranged on described second partition (44).
10. compressor according to claim 7, is characterized in that,
Described bearing device also comprises baffle plate (46), and described baffle plate (46) is positioned at the second end of described line shaft (2);
At least one electromagnetic bearing described also comprises magnetic thrust bearing (5), and described magnetic thrust bearing is positioned at the second end of described line shaft (2), and described magnetic thrust bearing (5) abuts with described baffle plate (46);
Described second coolant channel comprises the gap being opened in multiple baffle plate through hole on described baffle plate (46) and described magnetic thrust bearing (5).
11. compressors according to claim 10, is characterized in that, described multiple baffle plate through hole is arranged equably along the circumference of described line shaft (9).
12. compressors according to claim 7, is characterized in that, described compressor also comprises and utilizes freezing mixture to be the motor cooling unit that described motor (1) is lowered the temperature, and described motor cooling unit comprises:
3rd coolant inlet;
First cooling flowing path, described first cooling flowing path is arranged on the stator periphery of described motor (1), and the import of described first cooling flowing path communicates with described 3rd coolant inlet;
Second cooling flowing path, described second cooling flowing path is the gap between the stator of described motor (1) and rotor, and the import of described second cooling flowing path communicates with the outlet of described first cooling flowing path.
13. compressors according to claim 12, described compressor also comprises the first housing being located at described motor (1) periphery, the outer circumferential face of the stator of described motor (1) abuts with the inner peripheral surface of described first housing, and described first cooling flowing path is be opened in the spiral groove on the inner peripheral surface of described first housing.
14. compressors according to claim 12, it is characterized in that, described cooling unit also comprises the coolant outlet of the freezing mixture for drawing described first cooling unit and described second cooling unit, and wherein, the freezing mixture of described motor cooling unit is drawn from described coolant outlet.
15. 1 kinds of cold water formula air-conditioner set, is characterized in that, described cold water formula air-conditioner set comprises the compressor in claim 1 to 14 described in any one.
16. cold water formula air-conditioner set according to claim 15, it is characterized in that, described compressor is centrifugal compressor.
The cool-down method of 17. 1 kinds of compressors, it is characterized in that, the line shaft (2) that described compressor comprises motor (1), be in transmission connection with described motor (1) and at least one electromagnetic bearing support described line shaft (2), described cool-down method comprise from the outside of described compressor introduce freezing mixture thinks described at least one electromagnetic bearing lower the temperature.
18. cool-down methods according to claim 17, it is characterized in that, at least one electromagnetic bearing described comprises the first electromagnetism radial bearing (31) of the first end being supported on described line shaft (2), and the freezing mixture at least partially in described freezing mixture flows through the described gap of the first electromagnetism radial bearing (31) and the gap between the stator of motor (1) and rotor.
19. cool-down methods according to claim 18, it is characterized in that, at least one electromagnetic bearing described also comprises the second electromagnetism radial bearing (41), described second electromagnetism radial bearing (41) is supported on the second end of described line shaft (2), and the freezing mixture at least partially in described freezing mixture flows through the gap of described second electromagnetism radial bearing (41).
20. cool-down methods according to claim 18, it is characterized in that, at least one electromagnetic bearing described also comprises the second electromagnetism radial bearing (41) and magnetic thrust bearing (5), described second electromagnetism radial bearing (41) and magnetic thrust bearing (5) are all supported on the second end of described line shaft (2), and the freezing mixture at least partially in described freezing mixture flows out described compressor after flowing through the gap of described magnetic thrust bearing (5) and the gap of described second electromagnetism radial bearing (41) successively.
21. cool-down methods according to claim 19 or 20, it is characterized in that, described compressor also comprises and utilizes freezing mixture to be the motor cooling unit that described motor (1) is lowered the temperature, for lower the temperature for described motor (1) freezing mixture, introduced by different imports respectively for the freezing mixture of lowering the temperature for described first electromagnetism radial bearing (31) and the freezing mixture for lowering the temperature for described second electromagnetism radial bearing (41).
22. cool-down methods according to claim 19 or 20, it is characterized in that, for lower the temperature for described motor (1) freezing mixture, drawn by same coolant outlet for the freezing mixture of lowering the temperature for described first electromagnetism radial bearing (31) and the freezing mixture for lowering the temperature for described second electromagnetism radial bearing (41).
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| CN107394947A (en) * | 2017-08-29 | 2017-11-24 | 南京磁谷科技有限公司 | A kind of refrigeration compressor cooling structure |
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| US11047389B2 (en) | 2010-04-16 | 2021-06-29 | Air Squared, Inc. | Multi-stage scroll vacuum pumps and related scroll devices |
| CN106246606A (en) * | 2016-09-19 | 2016-12-21 | 珠海格力电器股份有限公司 | Compressor and air-conditioner |
| US10865793B2 (en) | 2016-12-06 | 2020-12-15 | Air Squared, Inc. | Scroll type device having liquid cooling through idler shafts |
| US11692550B2 (en) | 2016-12-06 | 2023-07-04 | Air Squared, Inc. | Scroll type device having liquid cooling through idler shafts |
| CN107394947A (en) * | 2017-08-29 | 2017-11-24 | 南京磁谷科技有限公司 | A kind of refrigeration compressor cooling structure |
| US11454241B2 (en) | 2018-05-04 | 2022-09-27 | Air Squared, Inc. | Liquid cooling of fixed and orbiting scroll compressor, expander or vacuum pump |
| US11067080B2 (en) | 2018-07-17 | 2021-07-20 | Air Squared, Inc. | Low cost scroll compressor or vacuum pump |
| US11933299B2 (en) | 2018-07-17 | 2024-03-19 | Air Squared, Inc. | Dual drive co-rotating spinning scroll compressor or expander |
| US11530703B2 (en) | 2018-07-18 | 2022-12-20 | Air Squared, Inc. | Orbiting scroll device lubrication |
| US11473572B2 (en) | 2019-06-25 | 2022-10-18 | Air Squared, Inc. | Aftercooler for cooling compressed working fluid |
| US11898557B2 (en) | 2020-11-30 | 2024-02-13 | Air Squared, Inc. | Liquid cooling of a scroll type compressor with liquid supply through the crankshaft |
| US11885328B2 (en) | 2021-07-19 | 2024-01-30 | Air Squared, Inc. | Scroll device with an integrated cooling loop |
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