CN208353156U - A kind of novel magnetically levitated compressor cooling device - Google Patents
A kind of novel magnetically levitated compressor cooling device Download PDFInfo
- Publication number
- CN208353156U CN208353156U CN201820350897.4U CN201820350897U CN208353156U CN 208353156 U CN208353156 U CN 208353156U CN 201820350897 U CN201820350897 U CN 201820350897U CN 208353156 U CN208353156 U CN 208353156U
- Authority
- CN
- China
- Prior art keywords
- magnetic bearing
- main shaft
- rotating mechanism
- cooling device
- magnetically levitated
- 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
Links
Landscapes
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a kind of novel magnetically levitated compressor cooling device, including shell, it is provided with rotating mechanism in shell, the cooling body for guaranteeing rotating mechanism normal work for cooling down for rotating mechanism is provided on rotating mechanism.The utility model passes through setting cooling body, realizing the present apparatus, internally automatic cycle is cooling, save resource, compared with the cooling structure of existing magnetic suspension cold medium compressor, there is sufficient cooling effect, part category is few compact-sized simple, further reduce the volume of compressor, cost can lower 30%-40%, and the revolving speed of motor can also be made to be increased to 20000r/min or more, manufacture and popularization easy to produce.
Description
Technical field
The utility model belongs to magnetic levitation technology field, and in particular to a kind of use is on central air-conditioning and large-scale freezer
Novel magnetically levitated compressor cooling device.
Background technique
When magnetic suspension compressor works, coil has resistance, and electric current flows through loss power and is converted into thermal energy；The magnetic field of iron core has
" hysteresis loop ", electric energy transformation magnetic energy some be changed into thermal energy；For iron core there are also being vortexed, electric energy has one when being changed into magnetic energy
Become electric current becomes thermal energy in turn again for part；If these heats cannot be pulled away, the normal work of motor just will affect.It is existing
Having technology is mainly the cooling of indirect type to the type of cooling of the part, that is, external cooling.Mainly use recirculated water cooling
But mode, structure is complicated for this mode, increases the volume of compressor." one kind is for cooling down by published CN206195554 U
The system of direct current permanent magnet motor in magnetic suspension cold medium compressor " in technology be different from present general technology, borrow cold media
Matter is cooling, has used cut-off equipment and spray nozzle.The cooling effect of this structure is less desirable.For existing deficiency, very
It is necessary to develop a kind of simple cooling system of good cooling results structure.
Utility model content
The technical problems to be solved in the utility model is to overcome the above-mentioned deficiency of the prior art, and providing a kind of can be compressor
Carry out the novel magnetically levitated compressor cooling device of cooling and good cooling effect.
To solve the above problems, the utility model uses following technical scheme: a kind of novel magnetically levitated compressor cooling
Device, including shell are provided with rotating mechanism in shell, are provided on rotating mechanism for cooling down for rotating mechanism to protect
Demonstrate,prove the cooling body that rotating mechanism works normally.
Be that the utility model advanced optimizes above scheme below: the cooling body includes carrying out for rotating mechanism
The coolant jacket of the ring structure of cooling.
It advanced optimizes: offering the equal screw with long screw pitch slot of screw pitch along its axis on the coolant jacket.
It advanced optimizes: offering the equal fine pitch helicla flute of screw pitch along its axis in the screw with long screw pitch slot.
Advanced optimize: one end circular array of the coolant jacket is shown multiple by screw with long screw pitch slot and fine pitch helicla flute
The notch that interior coolant media transfers out.
Advanced optimize: each notch is communicated with second area.
Advanced optimize: the second area is communicated with third region by the gap between stator and main shaft.
Advanced optimize: the third region is communicated with the fourth region by the gap between right radial direction magnetic bearing and main shaft.
Advanced optimize: the fourth region is communicated with first area.
In use, controlling left radial direction magnetic bearing and right radial direction magnetic bearing by magnetic bearing controller when rotating mechanism works
Generate radial force float main shaft and in radially fixed position, while in left axial magnetic bearing, right axial magnetic bearing and more
The axial force generated under block sector electromagnet collective effect is applied on thrust disc, so that main shaft be made to be in fixed axial position；
When the position of main shaft changes, the left sensor and right sensor at main shaft both ends are passed the information on to magnetic bearing
Controller makes main shaft return original position so that the magnetic force for generating corresponding magnetic bearing changes, and main shaft is inside stator and main shaft
It is rotated under the action of permanent magnet；
When coolant media compression mechanism works, by the coolant media of flow control device along deflection cone enter impeller chimney and
In the compression chamber that impeller blade is formed, under impeller at high speed turning effort, coolant media is compressed to form high pressure and enters spiral case
Runner in, from the discharge chamber of spiral case be discharged；
When cooling body works, a part through compressed coolant media enters screw with long screw pitch by shell air inlet
In slot and fine pitch helicla flute, coolant media along large and small pitch auger slot flows to left end from the right end of coolant jacket and from notch
Place flows into second area, cools down to the left end of stator；
Coolant media enters third region along the gap between stator and main shaft, cools down to the right end of stator, cold
Medium enters the fourth region, then the hole by left axial magnetic bearing, left axle by the gap between right radial direction magnetic bearing and main shaft
Enter hole from first area to magnetic bearing seat, the hole of right axial magnetic bearing seat and the hole of right axial magnetic bearing, is arranged from the hole of end cap
Enter to coolant media compression mechanism, into coolant media compression mechanism rise cooling effect coolant media with other coolant medias
It is compressed again, a part therein constantly recycles according to the above process cools down stator and other component.
The utility model keeps the present apparatus more energy saving, energy conservation can by setting rotating mechanism and coolant media compression mechanism
Up to 42%-50% or more, than prior art energy conservation 30%；By the way that cooling body is arranged, realizing the present apparatus, internally automatic cycle is cold
But, resource is saved, compared with the cooling structure of existing magnetic suspension cold medium compressor, there is sufficient cooling effect, part category
It is few compact-sized simple, the volume of compressor is further reduced, cost can lower 30%-40%, can also make motor
Revolving speed is increased to 20000r/min or more, manufacture and popularization easy to produce.
The utility model is described in further detail with reference to the accompanying drawings and examples.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model in embodiment；
Fig. 2 is the structural schematic diagram of the utility model coolant jacket in embodiment；
Fig. 3 is the structural schematic diagram of the utility model coolant jacket in embodiment；
Fig. 4 is the enlarged diagram in Fig. 2 at Q.
In figure: 1- spiral case；5- studs；6- inlet seal；7- impeller；8- air inlet；9- radial direction auxiliary bearing lid；
10- radial direction auxiliary bearing seat；11- radial direction auxiliary bearing；12- radial direction magnetic bearing shell；The left sensor of 13-；The left radial magnetic axis of 14-
It holds；15- coolant jacket；16- stator；The right radial direction magnetic bearing of 17-；18- axial magnetic bearing shell；The right sensor of 19-；20- left axle to
Magnetic bearing；The left axial magnetic bearing seat of 21-；The right axial magnetic bearing seat of 22-；23- sector electromagnet；The right axial magnetic bearing of 24-；25- axis
To auxiliary bearing seat；26- axial direction auxiliary bearing lid；27- axial direction auxiliary bearing；28- main shaft；29- end cap；30- shell；44- is led
Flow cone；45- impeller chimney；46- thrust disc；E- shell air inlet；F- screw with long screw pitch slot；F4- notch；The first area D1-；D2-
Second area；D3- third region；D4- the fourth region；The hole of the left axial magnetic bearing of D5-；The hole of the left axial magnetic bearing seat of D6-；
The hole of the right axial magnetic bearing seat of D7-；The hole of the right axial magnetic bearing of D8-；The hole of D9- end cap；Gap between J1- stator and main shaft；
Gap between the right radial direction magnetic bearing of J2- and main shaft；I- fine pitch helicla flute；W3- compression chamber；The runner of W4- spiral case；W5- spiral case
Outlet plenum.
Specific embodiment
Embodiment, as shown in Figures 1 to 4, a kind of novel magnetically levitated compressor cooling device, including shell 30, shell
It is provided with rotating mechanism in 30, the coolant media compression mechanism for compression refrigerant medium, whirler are provided on rotating mechanism
Structure is cooled down by cooling body, to guarantee the normal work of rotating mechanism.
The rotating mechanism includes the stator 16 being coaxially assemblied in shell 30, is coaxially equipped in stator 16 for driving
The main shaft 28 of coolant media compression mechanism work.
Radial auxiliary bearing is coaxially equipped between the position and shell 30 of close end on the excircle of the main shaft 28
Seat 10.
For the radial direction auxiliary bearing seat 10 by radial auxiliary bearing 11 and the coaxial assembly of main shaft 28, main shaft 28 and radial direction are auxiliary
The position between bearing block 10 close to 11 side of radial direction auxiliary bearing is helped to be packaged by radial auxiliary bearing lid 9.
Position on the excircle of the main shaft 28 close to radial direction auxiliary bearing seat 10 is provided with left sensor 13.
Left radial direction is coaxially equipped between the position and shell 30 of left sensor 13 on the excircle of the main shaft 28
Magnetic bearing 14.
Radial direction magnetic bearing shell 12 is coaxially equipped between the left sensor 13 and left radial direction magnetic bearing 14 and shell 30.
Position on the excircle of the main shaft 28 far from left sensor 13 is coaxially equipped with right radial direction magnetic bearing 17, right diameter
Axial magnetic bearing shell 18, axial magnetic bearing shell 18 and the fixed company of shell 30 are coaxially equipped on the excircle of magnetic bearing 17
It connects.
Position on the excircle of the main shaft 28 close to right radial direction magnetic bearing 17 is provided with for detecting 28 position of main shaft
Right sensor 19, and the axis direction between right sensor 19 and right radial direction magnetic bearing 17 along main shaft 28 is spaced apart,
The flowing for being convenient for coolant media is designed in this way.
It is pushing away for L-type structure that position on the excircle of the main shaft 28 close to right sensor 19, which is coaxially equipped with longitudinal section,
Power disk 46.
Circular array shows multiple sector electromagnets 23, multiple sector electromagnets 23 and axial direction on the large cylindrical week of the thrust disc 46
Flow direction between magnetic bearing shell 18 along coolant media is disposed with left axial magnetic bearing seat 21 and right axial magnetic bearing seat 22.
The side of the left axial magnetic bearing seat 21 is fixedly installed with the left axial magnetic bearing 20 being coaxially disposed with main shaft 28.
The side of the right axial magnetic bearing seat 22 is fixedly installed with the right axial magnetic bearing 24 being coaxially disposed with main shaft 28.
Axial auxiliary bearing seat 25, and axial asessory shaft are coaxially arranged between the right axial magnetic bearing 24 and main shaft 28
It holds and is bolted to connection between seat 25 and right axial magnetic bearing 24.
Axial auxiliary bearing 27 is coaxially arranged between the axial direction auxiliary bearing seat 25 and main shaft 28.
The side of the axial direction auxiliary bearing 27 and axial auxiliary bearing seat 25 passes through axial auxiliary bearing lid 26 and is sealed
Dress.
The coolant media compression mechanism includes the leaf for compression refrigerant medium being coaxially disposed in one end of main shaft 28
Wheel 7.
It is attached between the impeller 7 and main shaft 28 by the studs 5 of coaxial arrangement, one end of studs 5
It is connected through a screw thread between main shaft 28, the other end passes through the outer certain distance of impeller 7 and is packaged by bolt.
One end that the studs 5 is located at outside impeller 7 is coaxially equipped with deflection cone 44.
One end on the shell 30 close to impeller 7 is equipped with spiral case 1.
Position in the spiral case 1 close to impeller 7 is coaxially equipped with air inlet 8, between the outside and air inlet 8 of impeller 7
It is provided with the impeller chimney 45 of bell mouth shape structure.
It is close to each other but do not contact between the impeller chimney 45 and impeller 7, compression chamber is formed between impeller chimney 45 and impeller 7
W3 makes the compression ratio of coolant media be doubled under the action of impeller chimney 45 and impeller 7 special type curve itself.
Inlet seal 6 is provided between position and air inlet 8 on the impeller chimney 45 far from main shaft 28.
The inside of the spiral case 1 position corresponding with the edge of impeller 7 is provided with the runner W4 of spiral case, the stream of spiral case
Road W4 is communicated with the outlet plenum W5 of spiral case, impeller 7 coolant media is compressed after by the runner W4 of spiral case and going out for spiral case
Oral cavity W5 is delivered to cooling body.
The cooling body includes the coolant jacket 15 of the ring structure to cool down indirectly for stator 16, and coolant jacket 15 coaxially assembles
Between stator 16 and shell 30.
The equal screw with long screw pitch slot F of screw pitch is offered along its axis on the excircle of the coolant jacket 15.
The equal fine pitch helicla flute I of screw pitch is offered along its axis in the screw with long screw pitch slot F.
One end circular array on the coolant jacket 15 close to impeller 7 is shown multiple by screw with long screw pitch slot F and fine pitch spiral shell
The notch F4 that coolant media in spin slot I transfers out.
The side of the coolant jacket 15 is offered far from the position of spiral case 1 for screw with long screw pitch slot F and fine pitch spiral shell
The shell air inlet E of conveying coolant media in spin slot I.
It is formed between the left radial direction magnetic bearing 14, main shaft 28, shell 30, coolant jacket 15 and stator 16 and is communicated with notch F4
Second area D2, can cool down when coolant media passes through second area D2 for component positioned at the region.
The second area D2 is communicated with the gap J1 between the stator and main shaft formed between main shaft 28 and stator 16, and second
Coolant media in the D2 of region enters the gap J1 between stator and main shaft, and cools down for the component positioned at the region.
Between the main shaft 28, stator 16, right radial direction magnetic bearing 17, axial magnetic bearing shell 18 and coolant jacket 15 formed and
The third region D3 that gap J1 between stator and main shaft is communicated, the coolant media in the J1 of gap between stator and main shaft enter third
Region D3 is that the component positioned at the region cools down.
Be provided between the right radial direction magnetic bearing 17 and main shaft 28 the right radial direction magnetic bearing that is communicated with third region D3 with
It is positioned at this that coolant media in gap J2 between main shaft, third region D3, which enters the gap J2 between right radial direction magnetic bearing and main shaft,
The component in region cools down.
The main shaft 28, thrust disc 46, left axial magnetic bearing seat 21, axial magnetic bearing shell 18 and right radial direction magnetic bearing 17
Between form the fourth region D4 that communicates with right radial direction magnetic bearing with the gap J2 between main shaft, between right radial direction magnetic bearing and main shaft
It is that the component positioned at the region cools down that coolant media in the J2 of gap, which enters the fourth region D4,.
Position on the left axial magnetic bearing 20 by proximal edge offers and the fourth region D4 phase along the axis of main shaft 28
The hole D5 of logical left axial magnetic bearing.
It is offered with left axle along the axis of main shaft 28 to magnetic axis on the left axial magnetic bearing seat 21 by the position of proximal edge
The hole D6 for the left axial magnetic bearing seat that the hole D5 held is communicated.
It is offered with left axle along the axis of main shaft 28 to magnetic axis on the right axial magnetic bearing seat 22 by the position of proximal edge
Hold the hole D7 for the right axial magnetic bearing seat that the hole D6 of seat is communicated.
Position on the right axial magnetic bearing 24 by proximal edge offers and right axial magnetic bearing along the axis of main shaft 28
The hole D8 for the right axial magnetic bearing that the hole D7 of seat is communicated.
The hole D5 of the left axial magnetic bearing, the hole D6 of left axial magnetic bearing seat, the hole D7 of right axial magnetic bearing seat and the right side
The axis of the hole D8 of axial magnetic bearing is on same straight line.
The described one end of axial magnetic bearing shell 18 far from shell 30 is packaged by end cap 29.
The axial magnetic bearing shell 18, right axial magnetic bearing 24, axial auxiliary bearing seat 25, axial auxiliary bearing lid
26, the region surrounded between end cap 29 and main shaft 28 is first area D1.
The middle part of the end cap 29 offers the hole D9 of end cap.
The left sensor 13, left radial direction magnetic bearing 14, right radial direction magnetic bearing 17, right sensor 19, left axial magnetic bearing
20 and right axial magnetic bearing 24 be connected with magnetic bearing controller.
In use, controlling left radial direction magnetic bearing 14 and right radial magnetic axis by magnetic bearing controller when rotating mechanism works
Holding 17 generation radial forces floats main shaft 28 and is in radially fixed position, while in left axial magnetic bearing 20, right axial magnetic
The axial force generated under 23 collective effect of bearing 24 and muti-piece sector electromagnet is applied on thrust disc 46, so that main shaft 28 be made to be in
Fixed axial position；
When the position of main shaft 28 changes, the left sensor 13 and right sensor 19 at 28 both ends of main shaft are passed the information on
To magnetic bearing controller, main shaft 28 is set to return original position so that the magnetic force for generating corresponding magnetic bearing changes, main shaft 28 is fixed
It is rotated under the action of son 16 and 28 interior permanent magnet of main shaft；
When coolant media compression mechanism works, impeller chimney is entered along deflection cone 44 by the coolant media of flow control device
45 and 7 blade of impeller formed compression chamber W3 in, under the turning effort at high speed of impeller 7, coolant media is compressed to form high pressure
Into in the runner W4 of spiral case, it is discharged from the discharge chamber W5 of spiral case；
When cooling body works, a part through compressed coolant media enters big screw pitch spiral shell by shell air inlet E
In spin slot F and fine pitch helicla flute I, coolant media flows to left end simultaneously from the right end of coolant jacket 15 along large and small pitch auger slot
Second area D2 is flowed into from notch F4, and the left end of stator 16 is cooled down；
Coolant media enters third region D3 along the gap J1 between stator and main shaft, carries out to the right end of stator 16 cold
But, coolant media enters the fourth region D4 by the gap J2 between right radial direction magnetic bearing and main shaft, then passes through left axial magnetic bearing
Hole D5, the hole D6 of left axial magnetic bearing seat, the hole D7 of right axial magnetic bearing seat and right axial magnetic bearing hole D8 enter first
Region D1 is drained into coolant media compression mechanism from the hole D9 of end cap, plays cooling effect into coolant media compression mechanism
Coolant media is compressed again with other coolant medias, a part therein constantly recycle according to the above process to stator 16 and
Other component is cooled down.
The utility model keeps the present apparatus more energy saving, energy conservation can by setting rotating mechanism and coolant media compression mechanism
Up to 42%-50% or more, than prior art energy conservation 30%；By the way that cooling body is arranged, realizing the present apparatus, internally automatic cycle is cold
But, resource is saved, compared with the cooling structure of existing magnetic suspension cold medium compressor, there is sufficient cooling effect, part category
It is few compact-sized simple, the volume of compressor is further reduced, cost can lower 30%-40%, can also make motor
Revolving speed is increased to 20000r/min or more, manufacture and popularization easy to produce.
Claims (8)
1. a kind of novel magnetically levitated compressor cooling device, including shell (30), shell (30) is interior to be provided with rotating mechanism,
It is characterized in that: being provided with the cooler for guaranteeing rotating mechanism normal work for cooling down for rotating mechanism on rotating mechanism
Structure；
The cooling body includes the coolant jacket (15) of the ring structure to cool down for rotating mechanism.
2. a kind of novel magnetically levitated compressor cooling device according to claim 1, it is characterised in that: the coolant jacket
(15) the equal screw with long screw pitch slot (F) of screw pitch is offered along its axis on.
3. a kind of novel magnetically levitated compressor cooling device according to claim 2, it is characterised in that: the big screw pitch
The equal fine pitch helicla flute (I) of screw pitch is offered along its axis in helicla flute (F).
4. a kind of novel magnetically levitated compressor cooling device according to claim 3, it is characterised in that: the coolant jacket
(15) one end circular array is shown multiple coolant medias by screw with long screw pitch slot (F) and fine pitch helicla flute (I) and is transferred out
The notch (F4) gone.
5. a kind of novel magnetically levitated compressor cooling device according to claim 4, it is characterised in that: described each scarce
Mouth (F4) is communicated with second area (D2).
6. a kind of novel magnetically levitated compressor cooling device according to claim 5, it is characterised in that: secondth area
Domain (D2) is communicated with third region (D3) by the gap (J1) between stator and main shaft.
7. a kind of novel magnetically levitated compressor cooling device according to claim 6, it is characterised in that: the third area
Domain (D3) is communicated with the fourth region (D4) by the gap (J2) between right radial direction magnetic bearing and main shaft.
8. a kind of novel magnetically levitated compressor cooling device according to claim 7, it is characterised in that: the 4th area
Domain (D4) is communicated with first area (D1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820350897.4U CN208353156U (en) | 2018-03-15 | 2018-03-15 | A kind of novel magnetically levitated compressor cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820350897.4U CN208353156U (en) | 2018-03-15 | 2018-03-15 | A kind of novel magnetically levitated compressor cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208353156U true CN208353156U (en) | 2019-01-08 |
Family
ID=64885171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820350897.4U Active CN208353156U (en) | 2018-03-15 | 2018-03-15 | A kind of novel magnetically levitated compressor cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208353156U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108270324A (en) * | 2018-03-15 | 2018-07-10 | 山东天瑞重工有限公司 | A kind of novel magnetically levitated compressor cooling device |
| WO2021114491A1 (en) * | 2019-12-13 | 2021-06-17 | 南京磁谷科技股份有限公司 | Mounting structure of magnetic bearings of magnetic suspension centrifuge |
-
2018
- 2018-03-15 CN CN201820350897.4U patent/CN208353156U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108270324A (en) * | 2018-03-15 | 2018-07-10 | 山东天瑞重工有限公司 | A kind of novel magnetically levitated compressor cooling device |
| WO2021114491A1 (en) * | 2019-12-13 | 2021-06-17 | 南京磁谷科技股份有限公司 | Mounting structure of magnetic bearings of magnetic suspension centrifuge |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108270324A (en) | A kind of novel magnetically levitated compressor cooling device | |
| CN208353156U (en) | A kind of novel magnetically levitated compressor cooling device | |
| CN203130530U (en) | Inner-circulation compulsory water-cooling electric water pump | |
| CN213717784U (en) | Cooling system of two-stage air suspension centrifugal permanent magnet motor direct-drive air compressor | |
| CN202145603U (en) | Ventilation structure of air cooling AC motor | |
| CN109256902A (en) | A kind of hydronic high-speed permanent magnet motor of rotor integration and its cooling means | |
| CN103944313A (en) | Direct-coupled magnetic suspension fan | |
| CN106451918A (en) | Circulating liquid cooling motor | |
| CN102005860A (en) | Heat abstractor for high-power vertical-axis wind generating set | |
| CN201730680U (en) | Electric turbocharger | |
| CN108223403A (en) | A kind of novel magnetically levitated compressor | |
| CN208128076U (en) | A kind of automobile-used liquid cooling driving motor | |
| CN208010614U (en) | A kind of novel magnetically levitated compressor | |
| CN108044136A (en) | A kind of novel static pressure air-flotation electric spindle | |
| CN105914975B (en) | A kind of birotor excitation combination retarder | |
| CN205533310U (en) | Vertical fan that directly allies oneself with | |
| CN110500293A (en) | Centrifugal compressor | |
| CN205377570U (en) | Axial compressor forced air cooling structure of permanent magnet speed regulation ware | |
| CN209761615U (en) | Cooling tower water turbine with permanent magnet power compensation device | |
| CN106411011A (en) | Internal water cooling motor rotor | |
| CN207695637U (en) | A kind of novel static pressure air-flotation electric spindle | |
| CN203261190U (en) | Heat radiation structure of superspeed PMSM | |
| CN203871986U (en) | Direct-connection magnetic levitation fan | |
| CN207426909U (en) | The rotor cooling system of magnetic suspension high speed motor associated mode atomizer | |
| CN108365703A (en) | The air-cooled impeller of motor, double air duct motors and electric vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A new cooling device for magnetic suspension compressor Effective date of registration: 20220620 Granted publication date: 20190108 Pledgee: China Construction Bank Corporation Weifang Kuiwen sub branch Pledgor: SHANDONG TIANRUI HEAVY INDUSTRY Co.,Ltd. Registration number: Y2022370000069 |