CN109695983A - A kind of magnetic suspension air cycle refrigerating machine - Google Patents
A kind of magnetic suspension air cycle refrigerating machine Download PDFInfo
- Publication number
- CN109695983A CN109695983A CN201710981549.7A CN201710981549A CN109695983A CN 109695983 A CN109695983 A CN 109695983A CN 201710981549 A CN201710981549 A CN 201710981549A CN 109695983 A CN109695983 A CN 109695983A
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- Prior art keywords
- permanent magnet
- axial
- magnetic pole
- radial
- stator
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D1/00—Devices using naturally cold air or cold water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention discloses a kind of magnetic suspension air cycle refrigerating machine, compressor, one Three Degree Of Freedom permanent magnet biased magnetic bearing, High speed SRM, another Three Degree Of Freedom permanent magnet biased magnetic bearing, turbine in shaft successively in being co-axially mounted, Three Degree Of Freedom permanent magnet biased magnetic bearing includes stator assembly and rotor assembly, stator module includes outer magnetizer, axial control winding, axial stator magnetic pole, radial stator magnetic pole, radial control winding and annular permanent magnet, axial control winding is placed on the inside of axial stator magnetic pole, radial control winding is set on radial stator magnetic pole, annular permanent magnet is mounted on the outside of radial stator magnetic pole and the inside of outer magnetizer respectively；The rotor assembly includes the rotor core being sleeved in shaft, and the left and right air gap between rotor core and axial stator is dissymmetrical structure.Such refrigeration machine structure is simple, light-weight, low in energy consumption.
Description
Technical field
The invention belongs to the high-speed magnetic levitation air circulation systems that magnetic bearing technology, high-speed motor and air cycle machine combine
Cold machinery technical field, in particular to a kind of suspension of five-freedom degree magnetic air cycle refrigerating machine.
Background technique
Air cycle refrigeration technology is a kind of common Refrigeration Technique, is widely used in ground installation air conditioner ventilation and aircraft
The numerous areas such as environmental control system, the safety of the comfortable and equipment for support personnel.With electronics in aircraft bullet train
Equipment is continuously increased, and the cooling of equipment compartment has become the top priority of environmental control system.Heat caused by electronic equipment
Once exceeding the refrigerating capacity of existing system, reliability will be greatly lowered.In general, air circulation refrigeration system using air as
Refrigerant scatters away heat according to the principle that thermal energy is converted to mechanical work, and important component is air cycle refrigerating machine, according to
The energy difference driving rotary components work of working medium air, generates Cryogenic air in turbine outlet, is formed at its entrance and exit
Certain refrigerating capacity.The working principle of this air cycle refrigerating machine is simple, and to the adaptable of working environment, but it is maximum
The disadvantage is that must could be operated by the working medium air that energy is higher than ambient air, and these working medium air are only from high-pressure air source
It is obtained in bleed (compressed air that such as aircraft engine compressor generates).Moreover bleed is often not fully utilized, cause
A large amount of energy dissipation.In some special cases, refrigeration machine is because that can not obtain enough pressure-airs, entire refrigeration system
Necessary refrigerating capacity cannot be generated, or even can not work normally refrigeration machine.
With the development of high-speed motor and its actuation techniques, people's gradually height similar with cold air machine from high-speed motor
It is recognized in fast rotation mode and the efficient energy fan-out capability of high-speed motor, drives air circulation system using by high-speed motor
The technology of cold, by high-speed motor it is some or all of substitution conventional chiller driving energy source, can both reduce or
Dependence of the refrigeration system to high-pressure air source bleed is completely eliminated, the structure of refrigeration machine is simplified, it is energy saving, to greatly increase system
Thus the application field of cooling system, this case generate.
Summary of the invention
The purpose of the present invention is to provide a kind of magnetic suspension air cycle refrigerating machine, and structure is simple, light-weight, power consumption
It is low.
In order to achieve the above objectives, solution of the invention is:
A kind of magnetic suspension air cycle refrigerating machine, including the identical Three Degree Of Freedom permanent magnet biased magnetic bearing of two structures, one
A compressor, a High speed SRM, a turbine and shaft, wherein compressor, a Three Degree Of Freedom permanent magnet bias
Magnetic bearing, High speed SRM, another Three Degree Of Freedom permanent magnet biased magnetic bearing, turbine in shaft successively in coaxially pacifying
Dress.
Above-mentioned Three Degree Of Freedom permanent magnet biased magnetic bearing includes stator assembly and rotor assembly, wherein stator module includes outer
Magnetizer, axial control winding, axial stator magnetic pole, radial stator magnetic pole, radial control winding and annular permanent magnet, it is axial to control
Winding processed is placed on the inside of axial stator magnetic pole, and radial stator magnetic pole is four field structures, and radial control winding is set in radial fixed
On sub- magnetic pole, annular permanent magnet is mounted on the outside of radial stator magnetic pole and the inside of outer magnetizer respectively；The rotor assembly
Including the rotor core being sleeved in shaft.
Above-mentioned outer magnetizer and axial stator magnetic pole are made of solid soft magnetic materials.
Above-mentioned radial stator magnetic pole is pressed by silicon steel sheet stack.
Above-mentioned annular permanent magnet is made of sintered NdFeB.
Above-mentioned rotor core is formed by silicon steel plate stacking.
Above-mentioned shaft is made of non-magnet material.
After adopting the above scheme, the present invention realizes that rotor five degree of freedom is outstanding using two Three Degree Of Freedom permanent magnet biased magnetic bearings
It is floating, conventional engine grade air is compressed into air circulation control system institute using high-speed switched reluctance and turbine drives compressor
The pressurization high-temperature gas needed, High speed SRM drive turbine by the expansion cooling of partial boost high-temperature gas at low temperature gas
Body.Three Degree Of Freedom magnetic bearing axial air gap asymmetrical design, using permanent magnet generate passive bearing capacity go offset compressor and
Axial compressive force between turbine is poor, reduces the power consumption of system.The system structure is compact, light-weight, low in energy consumption, navigates in China's aviation
It, the fields such as bullet train have broad application prospects.
Detailed description of the invention
Fig. 1 is planar structure schematic diagram of the invention；
Fig. 2 is the planar structure schematic diagram of Three Degree Of Freedom permanent magnet biased magnetic bearing in the present invention.
Specific embodiment
Below with reference to attached drawing, technical solution of the present invention is described in detail.
As shown in Figure 1, the present invention provides a kind of magnetic suspension air cycle refrigerating machine, including two structures identical three are freely
Spend permanent magnet biased magnetic bearing 2,4, a compressor 1, a High speed SRM 3, a turbine 5 and shaft 9, wherein
Compressor 1, Three Degree Of Freedom permanent magnet biased magnetic bearing 2, High speed SRM 3, Three Degree Of Freedom permanent magnet biased magnetic bearing 4, whirlpool
Wheel 5 is successively co-axially mounted in shaft 9, and shaft 9 is made of non-magnet material.
Cooperate shown in Fig. 2, Three Degree Of Freedom permanent magnet biased magnetic bearing includes stator assembly and rotor assembly, wherein stator pack
Part includes outer magnetizer 6, axial control winding 7, axial stator magnetic pole 8, radial stator magnetic pole 12, radial control winding 11 and ring
Shape permanent magnet 13, outer magnetizer 6 and axial stator magnetic pole 8 are made of solid soft magnetic materials, and axial control winding 7 is placed in axial fixed
Sub- 8 inside of magnetic pole, it is four field structures that radial stator magnetic pole 12 is pressed into for silicon steel sheet stack, and radial control winding 11 is set in
On radial stator magnetic pole 12, annular permanent magnet 13 is made of sintered NdFeB, is mounted on the outside of radial stator magnetic pole 12 respectively
With the inside of outer magnetizer 6；The rotor assembly includes rotor core 10, is formed for silicon steel plate stacking, is sleeved in shaft 9.
The biasing magnetic flux that annular permanent magnet 13 generates successively passes through outer magnetizer 6, axial stator magnetic pole 8, axial air-gap, rotor core
10, radial air gap, radial stator magnetic pole 12 constitute circuit, as solid line in figure 2；The control magnetic that axial control winding generates
Axial stator magnetic pole and axial air-gap are crossed in promoting menstruation, as shown in the chain-dotted line in Fig. 2；Axial air-gap is unsymmetrical arrangement, air gap
Difference is determined by gas source and low-temperature pressure size of the difference.
The basic functional principle that the present invention is freezed is: under the drive of High speed SRM and turbine, compressor will
The air of conventional engine grade from gas source, which is collapsed into, meets the required pressurized air of entire air circulation system work, will
A part pressurization high temperature air expands cooling in turbine, generates Cryogenic air, meets the high pressure of environment and the need of Cryogenic air
It asks.Compressor, High speed SRM and turbine are by two that are located at High speed SRM both ends identical three freedom
Permanent magnet biased magnetic bearing support is spent, the five degree of freedom high speed suspension operation of system is realized, at this time between coaxial compressor machine and turbine
There are certain pressure differences, just need to generate lasting axial control magnetic flux in permanent magnet biased magnetic bearing and are superimposed with biasing magnetic flux
Balance pressure is gone, the excitation power consumption of permanent magnet biased magnetic bearing to be further decreased utilizes axial air-gap unsymmetrical arrangement, rotor iron
Corresponding passive bearing capacity can be generated in the heart, go balance pressure difference, the power consumption of permanent magnet biased magnetic bearing using the passive bearing capacity
It is minimized, also reduces system power dissipation.
The above examples only illustrate the technical idea of the present invention, and this does not limit the scope of protection of the present invention, all
According to the technical idea provided by the invention, any changes made on the basis of the technical scheme each falls within the scope of the present invention
Within.
Claims (6)
1. a kind of magnetic suspension air cycle refrigerating machine, it is characterised in that: including the identical Three Degree Of Freedom permanent magnet bias of two structures
Magnetic bearing, a compressor, a High speed SRM, a turbine and shaft, wherein compressor, three freedom
Permanent magnet biased magnetic bearing, High speed SRM, another Three Degree Of Freedom permanent magnet biased magnetic bearing, turbine are spent successively in shaft
On be co-axially mounted；
The Three Degree Of Freedom permanent magnet biased magnetic bearing is including stator assembly and rotor assembly, wherein stator module includes outer magnetic conduction
Body, axial control winding, axial stator magnetic pole, radial stator magnetic pole, radial control winding and annular permanent magnet, axial control around
Group is placed on the inside of axial stator magnetic pole, and radial stator magnetic pole is four field structures, and radial control winding is set in radial stator magnetic
On extremely, annular permanent magnet is mounted on the outside of radial stator magnetic pole and the inside of outer magnetizer respectively；The rotor assembly includes
The rotor core being sleeved in shaft, rotor core and axial stator magnetic pole form axial air-gap, are formed with radial stator magnetic pole
Radial air gap, axial air-gap are left-right asymmetry design structure.
2. a kind of magnetic suspension air cycle refrigerating machine as described in claim 1, it is characterised in that: the outer magnetizer and axial direction
Magnetic pole of the stator is made of solid soft magnetic materials.
3. a kind of magnetic suspension air cycle refrigerating machine as described in claim 1, it is characterised in that: the radial stator magnetic pole by
Silicon steel sheet stack is pressed into.
4. a kind of magnetic suspension air cycle refrigerating machine as described in claim 1, it is characterised in that: the annular permanent magnet is by burning
Knot neodymium iron boron is made.
5. a kind of magnetic suspension air cycle refrigerating machine as described in claim 1, it is characterised in that: the rotor core is by silicon steel
Piece is overrided to form.
6. a kind of magnetic suspension air cycle refrigerating machine as described in claim 1, it is characterised in that: the shaft is by non-magnetic material
Material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710981549.7A CN109695983A (en) | 2017-10-20 | 2017-10-20 | A kind of magnetic suspension air cycle refrigerating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710981549.7A CN109695983A (en) | 2017-10-20 | 2017-10-20 | A kind of magnetic suspension air cycle refrigerating machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109695983A true CN109695983A (en) | 2019-04-30 |
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ID=66225203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710981549.7A Pending CN109695983A (en) | 2017-10-20 | 2017-10-20 | A kind of magnetic suspension air cycle refrigerating machine |
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| Country | Link |
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| CN (1) | CN109695983A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111181307A (en) * | 2020-02-05 | 2020-05-19 | 上海英威腾工业技术有限公司 | High-speed motor for air spinning |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6703735B1 (en) * | 2001-11-02 | 2004-03-09 | Indigo Energy, Inc. | Active magnetic thrust bearing |
| CN2795751Y (en) * | 2005-04-21 | 2006-07-12 | 北京航空航天大学 | High speed motor driven high efficiency air refrigerator |
| CN101235848A (en) * | 2008-02-29 | 2008-08-06 | 南京化工职业技术学院 | Low consumption permanent magnetism biased axial radial magnetic bearing |
| CN101893038A (en) * | 2010-08-04 | 2010-11-24 | 南京化工职业技术学院 | Permanent magnet biased axial magnetic bearing |
| CN102562800A (en) * | 2012-02-28 | 2012-07-11 | 南京化工职业技术学院 | Permanent-magnet-biased axial magnetic bearing |
| CN106321631A (en) * | 2016-09-12 | 2017-01-11 | 南京科技职业学院 | Five-degree-of-freedom magnetic suspension bearing system |
-
2017
- 2017-10-20 CN CN201710981549.7A patent/CN109695983A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6703735B1 (en) * | 2001-11-02 | 2004-03-09 | Indigo Energy, Inc. | Active magnetic thrust bearing |
| CN2795751Y (en) * | 2005-04-21 | 2006-07-12 | 北京航空航天大学 | High speed motor driven high efficiency air refrigerator |
| CN101235848A (en) * | 2008-02-29 | 2008-08-06 | 南京化工职业技术学院 | Low consumption permanent magnetism biased axial radial magnetic bearing |
| CN101893038A (en) * | 2010-08-04 | 2010-11-24 | 南京化工职业技术学院 | Permanent magnet biased axial magnetic bearing |
| CN102562800A (en) * | 2012-02-28 | 2012-07-11 | 南京化工职业技术学院 | Permanent-magnet-biased axial magnetic bearing |
| CN106321631A (en) * | 2016-09-12 | 2017-01-11 | 南京科技职业学院 | Five-degree-of-freedom magnetic suspension bearing system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111181307A (en) * | 2020-02-05 | 2020-05-19 | 上海英威腾工业技术有限公司 | High-speed motor for air spinning |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190430 |
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| RJ01 | Rejection of invention patent application after publication |