CN2499607Y - Centrifugal refrigeration compressor - Google Patents
Centrifugal refrigeration compressor Download PDFInfo
- Publication number
- CN2499607Y CN2499607Y CN 01247658 CN01247658U CN2499607Y CN 2499607 Y CN2499607 Y CN 2499607Y CN 01247658 CN01247658 CN 01247658 CN 01247658 U CN01247658 U CN 01247658U CN 2499607 Y CN2499607 Y CN 2499607Y
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- ring
- bearing
- magnetostatic
- motor shaft
- taper
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Abstract
The utility model discloses a centrifugal refrigeration compressor which comprises a motor rotor, a motor stator, a motor shaft, taper shaped magnetic suspension bearings, beating end covers, vanes, a machine body, wherein the motor shaft is connected with a impeller coaxially in-line, two groups of the taper shaped magnetic suspension bearings are arranged on the two sides of the motor rotor symmetrically, the bearing end covers for limitation are positioned at the outer end of the taper shaped magnetic suspension bearings, each taper shaped magnetic suspension bearing consists of a taper shaped inner hole static magnet and a taper shaped outer circle magnet. The device has advantages of a simple structure, low energy consumption for cooling and high efficiency.
Description
The utility model belongs to gas compression field, particularly centrifugal refigerating compressor.
The structure of existing centrifugal refigerating compressor forms, and is made up of bearing, motor, impeller, body, gear-box, lubrication system etc., and its characteristics are as follows:
1, rotating shaft is supported and is adopted sliding bearing or rolling bearing, so the loss that friction causes is bigger, and unit efficiency is reduced;
2,, the systems such as pressure store oil that special-purpose lubrication system and supporting lubricant oil heat, cool off, filter, divide oil and is used for dead halt must be set, so bring following drawback owing to all there are the contact friction in bearing, driving gear etc.:
A) system architecture complexity;
B) rate of fault height;
C) increase energy consumption;
D) equipment cost height;
E) rotational noise is big;
F) most critical is, when lubricant oil enters vaporizer, at low temperature area, lubricating oil viscosity can significantly increase, and adheres on the cryogenic heat transfer face, forms oil film, because the thermal resistance of oil film is 2700-2900 times of same thickness metal wall (as copper tube), the overall coefficient of heat transfer K of system value is reduced, and the measure of taking usually to strengthen heat exchange area is overcome, and certainly will increase equipment cost and increase equipment volume;
G) when a large amount of lubricant oil when low temperature area condenses, can have influence on the lubricated of unit or cause the substantial equipment fault.
3, because the performance characteristic of centrifugal refigerating compressor, certainly exist end thrust during work, usually adopt thrust bearing or ad hoc hydraulic pressure (or air pressure) Balance disc to be overcome, certainly will increase bearing load, increase loss, if adopt Balance disc, also will make the system architecture complexity, simultaneously, Balance disc will increase system's wasted work, and system effectiveness is descended.
The purpose of this utility model, the friction loss that reduces and stop conventional centrifugal refigerating compressor exactly, the cancellation lubrication system is simplified unit to greatest extent, improves unit efficiency to greatest extent.
First technological scheme of the present utility model is:
A kind of centrifugal refrigeration compressing apparatus, it is by bearing (ball) cover, impeller, the organization of rotor, motor stator, motor shaft, taper magnetic bearing and spacing usefulness; Impeller and the coaxial direct connection of motor shaft, motor stator and rotor are installed in the middle part of motor shaft, two groups of taper magnetic bearing symmetries are installed on the axle of both sides of rotor, and the bearing (ball) cover of spacing usefulness places the outer end of taper magnetic bearing, and is fixed on the body.Taper Ci County floating axle holds by the moving magnet ring of magnetostatic ring of cone-shaped inner hole and the outer garden of taper to be formed, the tapering in the outer garden of their cone-shaped inner hole and taper equates, the moving magnet ring in the outer garden of taper is fixed on the motor shaft and places in the magnetostatic ring of cone-shaped inner hole, the magnetostatic ring of cone-shaped inner hole is installed on the body, the magnetostatic ring of cone-shaped inner hole is identical with the magnetic pole on moving magnet ring tapering surface, the outer garden of taper, and tapering equates.
Second technological scheme of the present utility model is:
A kind of centrifugal refrigeration compressing apparatus, it is by rotor, motor stator, motor shaft, the bearing (ball) cover of two groups of radial magnetic bearings, axial magnetic suspension bearing and spacing usefulness, impeller, organization; Impeller and the coaxial direct connection of motor shaft, motor stator and rotor are installed in the middle part of motor shaft, two groups of radial magnetic bearing symmetries are installed on two side shafts of rotor, axial magnetic suspension bearing is installed in the tail end of motor shaft, and bearing (ball) cover places the outside of axial magnetic suspension bearing and is fixed on the body; Radial magnetic bearing is made up of magnetostatic ring and moving magnet ring, and moving magnet ring is installed in the magnetostatic ring, and magnetostatic ring is installed on the body, and magnetostatic ring endoporus is identical with the magnetic pole on the outer surface, garden of moving magnet ring; Axial magnetic suspension bearing is made up of big magnetostatic ring, moving greatly magnet ring and little magnetostatic ring, and moving greatly magnet ring is fixed on the motor shaft, and big magnetostatic ring places the inboard of big moving magnet ring and is installed on the body, and little magnetostatic ring places the outside of big moving magnet ring and is installed on the bearing (ball) cover.Big magnetostatic ring, moving greatly magnet ring and little magnetostatic ring are coaxial, and the magnetic pole on the moving greatly ring axial magnetic both ends of the surface is identical with the magnetic pole on big magnetostatic ring and the corresponding end face of little magnetostatic ring.
The utility model is than the advantage and the effect of prior art:
1, adopted the coaxial direct connection of impeller and motor shaft, motor has directly been realized the one pole compression with the frequency variator speedup, has cancelled conventional gear up mechanism and lubrication system thereof, simplifies the structure.
2, make rotating shaft reach three-dimensional magnetic suspension, overcome rotation contact friction of the prior art, unit efficiency is significantly improved.
3, completely abolished complex structure of the prior art, rate of fault height, link many, require high lubrication system, system architecture is simplified to greatest extent, reduced the rate of fault of unit, reduced the unit energy consumption, reduced manufacture cost, dwindled volume.
4, particularly overcome because lubricant oil adhesion on the low-temperature heat exchange face and significantly reduce the disadvantage of heat exchanger heat transfer coefficient in vaporizer, unit is realized no oiling, makes the unit efficiency raising.
5, unit durability increases substantially.
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the first technological scheme schematic diagram
Fig. 2 is the second technological scheme schematic diagram
Fig. 3 is the structure principle chart of existing centrifugal refrigeration compressing apparatus.
As shown in Figure 1, adopt the centrifugal refrigeration compressing apparatus of impeller and coaxial direct connection of motor shaft and taper magnetic bearing, form by bearing (ball) cover 4, impeller 1, the body 9 of rotor 7, motor stator 8, motor shaft 2, two groups of taper magnetic bearings 3 and spacing usefulness; Part 1 and part 2 coaxial direct connections, part 8 and part 7 are installed in the middle part of part 2, and two assemblies, 3 symmetries are installed on two side shafts of part 7, and the part 4 of spacing usefulness places the outer end of part 3.Part 3 is made up of the moving magnet ring 6 of magnetostatic ring 5 of cone-shaped inner hole and the outer garden of taper, and the tapering in the outer garden of their cone-shaped inner holes and taper equates that part 6 is fixed on the part 2 and places in the part 5, and part 5 is installed on the part 9, and the magnetic pole on part 5 and part 6 tapering surfaces is identical, tapering equates.
State of rest: two groups of taper magnetic bearings make rotor be in static state of suspension, and the part 5 at two ends equates that with the axial clearance of part 6 magnetic pole repulsion equates, is in static equilibrium.
Working state: motor shaft impeller high speed rotating because action of centrifugal force, make be compressed gas from impeller shaft to suction, radially discharge, and realize compression gas.Because during work, the pressure of the axial both sides of impeller is unequal, formation is to the end thrust of impeller suction side, and make impeller produce the thrust that is moved to the left by diagram, because part 1, part 6 is all fixed with motor shaft, when part 6 produces displacement left, the left side part 5 and the gap of part 6 are reduced, the axially repulsion increasing to the right that causes pole pair to produce, right side part 5 strengthens with the gap of part 6, and the axial to the left repulsion that this pole pair is produced reduces, and above-mentioned two results that make a concerted effort produce an end thrust to the right, the Resistance motor axle continues to be moved to the left, until reaching transient equiliblium.
As shown in Figure 2, adopt impeller with the coaxial direct connection of motor shaft and radially, the centrifugal refrigeration compressing apparatus of axial magnetic suspension bearing, bearing (ball) cover 4, impeller 1, body 9 by rotor 7, motor stator 8,2, two groups of radial magnetic bearings 11 of motor shaft, axial magnetic suspension bearing 14 and spacing usefulness are formed; Part 1 and part 2 coaxial direct connections, part 8 and part 7 are installed in the middle part of part 2, and two assemblies, 11 symmetries are installed on two axles of part 7, and part 14 is installed in the tail end of part 2, and part 4 places the outside of part 14 and is fixed on the part 9; Part 11 is made up of magnetostatic ring 12 and moving magnet ring 13, part 13 is installed in the part 12, part 12 is installed on the part 9, part 12 endoporus are identical with the magnetic pole on surface, part 13 outer garden, and part 14 is made up of big magnetostatic ring 15, moving greatly magnet ring 16 and little magnetostatic ring 17, and part 16 is fixed on the part 2, part 15 places the inboard of part 16 and is installed on the part 9, part 17 places the outside of part 16 and is installed on the part 4, and part 15, part 16 and part 17 are coaxial, and the magnetic pole on the part 16 axial both ends of the surface is identical with magnetic pole on part 15 and the part 17 corresponding end faces.
State of rest: two groups of radial magnetic bearing assemblies 11 make motor shaft be in radial suspension, in axial magnetcisuspension group 14, because part 15 is greater than part 17, because magnetic pole repulsion imbalance, part 16 is moved right, the part 15 and the gap of part 16 are strengthened, and part 16 reduces to equate with the repulsion of 17 of parts with the repulsion and the part 16 of part 16 until part 15 with the gap of part 17, reaches static equilibrium.
Working state: motor shaft impeller high speed rotating, and realization is identical with first technological scheme to the compression of gas, impeller can produce end thrust left, because part 16 is fixing with part 2, therefore, under the effect of end thrust, part 16 is moved to the left, the part 15 and the gap of part 16 are dwindled, and part 16 increases with the gap of part 17, and the resultant direction that makes part 14 product magnetic pole repulsion to the right, stop 2 continues to left dislocation, until reaching transient equiliblium.
The every use can make the centrifugal refigerating compressor motor shaft realize maglev other structure magnetic suspension bearing, all belongs to the scope of the utility model protection.
Claims (6)
1. one kind mainly by the centrifugal refrigeration compressing apparatus of rotor, motor stator, motor shaft, impeller, organization, and it is characterized in that: it also has two groups of taper magnetic bearings and is used for spacing bearing (ball) cover; Impeller and the coaxial direct connection of motor shaft, motor stator and rotor are installed in the middle part of motor shaft, two groups of taper magnetic bearing symmetries are installed on two side shafts of rotor, and the bearing (ball) cover of spacing usefulness places the outside of taper magnetic bearing, and is fixed on the body.
2. centrifugal refrigeration compressing apparatus according to claim 1, it is characterized in that: described taper magnetic bearing is made up of the moving magnet ring of magnetostatic ring of cone-shaped inner hole and the outer garden of taper, the moving magnet ring in the outer garden of taper is fixed on the motor shaft and places in the magnetostatic ring of cone-shaped inner hole, the magnetostatic ring of cone-shaped inner hole is installed on the body, and the magnetostatic ring of cone-shaped inner hole is identical with the magnetic pole on moving magnet ring tapering surface, the outer garden of taper.
3. centrifugal refrigeration compressing apparatus according to claim 2 is characterized in that: the tapering of the moving magnet ring in the outer garden of magnetostatic ring of described cone-shaped inner hole and taper equates.
4. one kind mainly by the centrifugal refrigeration compressing apparatus of rotor, motor stator, motor shaft, impeller, organization, and it is characterized in that: it also has two groups of radial magnetic bearings, one group of axial magnetic suspension bearing and is used for spacing bearing (ball) cover; Impeller and the coaxial direct connection of motor shaft, motor stator and rotor are installed in the middle part of motor shaft, two groups of radial magnetic bearing symmetries are installed on two side shafts of rotor, axial magnetic suspension bearing is installed in the tail end of motor shaft, bearing (ball) cover places the outside of axial magnetic suspension bearing, and is fixed on the body.
5. centrifugal refrigeration compressing apparatus according to claim 4, it is characterized in that: described radial magnetic bearing is made up of magnetostatic ring and moving magnet ring, moving magnet ring is installed in the magnetostatic ring, and magnetostatic ring is installed on the body, and magnetostatic ring endoporus is identical with the magnetic pole on the outer surface, garden of moving magnet ring.
6. centrifugal refrigeration compressing apparatus according to claim 4, it is characterized in that: described axial magnetic suspension bearing is made up of big magnetostatic ring, moving greatly magnet ring and little magnetostatic ring, big moving magnet ring is fixed on the motor shaft, big magnetostatic ring places the inboard of big moving magnet ring, be installed on the body, little magnetostatic ring places the outside of big moving magnet ring, and is installed on the bearing (ball) cover.Big magnetostatic ring, moving greatly magnet ring and little magnetostatic ring are coaxial, and the magnetic sheet on the moving greatly ring axial magnetic both ends of the surface is identical with the magnetic pole on big magnetostatic ring and the corresponding end face of little magnetostatic ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01247658 CN2499607Y (en) | 2001-09-20 | 2001-09-20 | Centrifugal refrigeration compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01247658 CN2499607Y (en) | 2001-09-20 | 2001-09-20 | Centrifugal refrigeration compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2499607Y true CN2499607Y (en) | 2002-07-10 |
Family
ID=33658471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01247658 Expired - Lifetime CN2499607Y (en) | 2001-09-20 | 2001-09-20 | Centrifugal refrigeration compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2499607Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155429A (en) * | 2010-02-12 | 2011-08-17 | 财团法人工业技术研究院 | Free lubrication centrifugal refrigerant compressor and lubricating method thereof |
| CN102200136A (en) * | 2011-05-25 | 2011-09-28 | 北京虎渡能源科技有限公司 | Air-suspension air-supply-adjustable air blower directly driven by high-speed electric machine |
| CN102705364A (en) * | 2012-06-29 | 2012-10-03 | 三一能源重工有限公司 | Independent oil supply sliding bearing with changeable pads and compressor equipped with bearing |
| CN105402126A (en) * | 2015-12-09 | 2016-03-16 | 沈阳工业大学 | Compact-structure low-pressure oil-free scroll compressor based on magnetic levitation technique |
| CN106353126A (en) * | 2016-07-30 | 2017-01-25 | 关慧娟 | Quick freezing microtome section device |
| CN111120411A (en) * | 2019-12-20 | 2020-05-08 | 珠海格力电器股份有限公司 | Cooling control device, magnetic suspension system and cooling control method thereof |
| CN115143139A (en) * | 2022-07-20 | 2022-10-04 | 扬州大学 | Floating impeller centrifugal pump with automatic limiting function and design method thereof |
-
2001
- 2001-09-20 CN CN 01247658 patent/CN2499607Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155429A (en) * | 2010-02-12 | 2011-08-17 | 财团法人工业技术研究院 | Free lubrication centrifugal refrigerant compressor and lubricating method thereof |
| CN102155429B (en) * | 2010-02-12 | 2013-07-24 | 财团法人工业技术研究院 | Free lubrication centrifugal refrigerant compressor and lubricating method thereof |
| CN102200136A (en) * | 2011-05-25 | 2011-09-28 | 北京虎渡能源科技有限公司 | Air-suspension air-supply-adjustable air blower directly driven by high-speed electric machine |
| CN102200136B (en) * | 2011-05-25 | 2012-09-05 | 北京虎渡能源科技有限公司 | Air-suspension air-supply-adjustable air blower directly driven by high-speed electric machine |
| CN102705364A (en) * | 2012-06-29 | 2012-10-03 | 三一能源重工有限公司 | Independent oil supply sliding bearing with changeable pads and compressor equipped with bearing |
| CN102705364B (en) * | 2012-06-29 | 2015-04-15 | 三一能源重工有限公司 | Independent oil supply sliding bearing with changeable pads and compressor equipped with bearing |
| CN105402126A (en) * | 2015-12-09 | 2016-03-16 | 沈阳工业大学 | Compact-structure low-pressure oil-free scroll compressor based on magnetic levitation technique |
| CN106353126A (en) * | 2016-07-30 | 2017-01-25 | 关慧娟 | Quick freezing microtome section device |
| CN111120411A (en) * | 2019-12-20 | 2020-05-08 | 珠海格力电器股份有限公司 | Cooling control device, magnetic suspension system and cooling control method thereof |
| CN115143139A (en) * | 2022-07-20 | 2022-10-04 | 扬州大学 | Floating impeller centrifugal pump with automatic limiting function and design method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SICHUAN XIWANG SHENLAN AIR CONDITIONING MANUFACTU Free format text: FORMER OWNER: CHENGDU HOPE ELECTRONIC RESEARCH INSTITUTE Effective date: 20071214 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20071214 Address after: No. 20, West Avenue, West Park, hi tech Zone, Sichuan, Chengdu: 610000 Patentee after: Sichuan hope deep blue air conditioner manufacturing Co., Ltd. Address before: No. 181, Airport Road, Sichuan, Chengdu: 610225 Patentee before: Xiwang Electronic Research Inst. Chengdu City |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110920 Granted publication date: 20020710 |