CN113757136B - Heat radiation system of magnetic suspension multistage compressor - Google Patents
Heat radiation system of magnetic suspension multistage compressor Download PDFInfo
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- CN113757136B CN113757136B CN202111055647.0A CN202111055647A CN113757136B CN 113757136 B CN113757136 B CN 113757136B CN 202111055647 A CN202111055647 A CN 202111055647A CN 113757136 B CN113757136 B CN 113757136B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
- F04D17/12—Multi-stage pumps
- F04D17/122—Multi-stage pumps the individual rotor discs being, one for each stage, on a common shaft and axially spaced, e.g. conventional centrifugal multi- stage compressors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
- F04D29/0563—Bearings cartridges
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the field of multistage compressors, in particular to a heat dissipation system of a magnetic suspension multistage compressor. The compressor comprises a motor cylinder, a front bearing seat, a rear bearing seat and a motor shafting; a motor stator is fixedly embedded in an inner hole of the motor cylinder, a motor shaft system is provided with a driving main shaft, and a motor rotor is fixedly sleeved on the outer wall of the driving main shaft; the motor cylinder is also provided with an air guide part, and the air guide part is respectively provided with an upper air guide surface and a lower air guide surface on the radial outer side surface and the radial inner side surface; the rear bearing seat is provided with a plurality of second channels which axially penetrate through the rear bearing seat; the driving main shaft is provided with an axial third channel and a radial fourth channel which penetrate through the driving main shaft, and the motor cylinder is provided with a radial fifth channel and a radial sixth channel which penetrate through the driving main shaft; the first heat dissipation channel, the second heat dissipation channel and the third heat dissipation channel are formed in the compressor respectively, so that internal heat is guided, and the heat dissipation efficiency of the compressor is improved.
Description
Technical Field
The invention relates to the field of multistage compressors, in particular to a heat dissipation system of a magnetic suspension multistage compressor.
Background
A multistage compressor refers to a compressor that gradually increases the gas pressure in stages. Industrial gases sometimes require higher pressures, requiring multistage compression, with stepwise increases in gas pressure. As the required pressure increases, the number of stages of the compressor increases. The multistage compressor is widely applied to petrochemical industry, synthetic ammonia, urea, air separation, refrigeration engineering and other aspects.
Chinese patent application publication No. CN104421188A, publication No. 20150318, discloses a multistage centrifugal compressor and an air conditioning unit, the multistage centrifugal compressor comprising a power portion and an impeller portion, the power portion comprising a motor, a shaft of the motor comprising a first end of the shaft and a second end of the shaft; the impeller part comprises N impellers, wherein N is more than or equal to 2 and less than 10; when N is a double number, the number of impellers on the first end of the shaft is equal to the number of impellers on the second end of the shaft; when N is singular, the number of impellers on the first end of the shaft is one more than that of impellers on the second end of the shaft; the first-stage impeller is arranged on the first end of the shaft and is farthest from the motor; the rest impellers on the first end of the shaft are sequentially arranged in ascending order; the N-th impeller is arranged on the second end of the shaft and is nearest to the motor; the other impellers on the second end of the shaft are sequentially arranged in descending order; the air outlet of the impeller at the first end of the shaft is communicated with the air inlet of the impeller at the second end of the shaft through a connecting pipeline, so that the purposes of improving the pressure ratio and the energy efficiency are achieved.
The prior art has the following defects: when the traditional multistage compressor is cooled, a heat dissipation hole is formed in the motor cylinder, and heat generated by internal parts of the compressor is conducted to the heat dissipation hole through gaps among the parts so as to be discharged; in the mode, heat is spontaneously conducted to the radiating holes along gaps among all parts, no radiating channel is used for guiding the heat in the compressor, and the radiating efficiency of the compressor is reduced.
Disclosure of Invention
The purpose of the invention is that: aiming at the problems, a heat dissipation system of a magnetic suspension multistage compressor is provided, wherein a first heat dissipation channel, a second heat dissipation channel and a third heat dissipation channel are respectively arranged in the compressor to guide heat in the compressor, so that the heat dissipation efficiency of the compressor is improved.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a heat radiation system of a magnetic suspension multistage compressor comprises a motor cylinder, a front bearing seat, a rear bearing seat and a motor shafting; the front bearing seat and the rear bearing seat are respectively fixed at two ends of the motor cylinder; a motor stator is fixedly embedded in an inner hole of the motor cylinder, a motor shaft system is provided with a driving main shaft, and a motor rotor corresponding to the motor stator in position is fixedly sleeved on the outer wall of the driving main shaft; the motor cylinder is also provided with an air guide part, and the air guide part is respectively provided with an upper air guide surface and a lower air guide surface on the radial outer side surface and the radial inner side surface; the rear bearing seat is provided with a plurality of second channels which axially penetrate through the rear bearing seat; the driving main shaft is provided with an axial third channel and a radial fourth channel which penetrate through the driving main shaft, and the motor cylinder is provided with a radial fifth channel and a radial sixth channel which penetrate through the driving main shaft; the second channel, a gap between the motor rotor and the motor stator, a gap between the upper air guide surface and the inner wall of the motor cylinder and the fifth channel are communicated with each other to form a first heat dissipation channel; the second channel, a gap between the motor rotor and the motor stator, a gap between the motor shafting and the lower wind guide surface and the sixth channel are mutually communicated to form a second heat dissipation channel; the third channel, the fourth channel and the sixth channel are mutually communicated to form a third heat dissipation channel.
Preferably, the plurality of second channels are distributed along the circumferential direction.
Preferably, a heat dissipation base is fixedly arranged on the outer side of the rear bearing seat, a heat dissipation fan is fixedly arranged on the inner side end face of the heat dissipation base, and the heat dissipation fan is used for dissipating heat inside the motor cylinder.
Preferably, the heat dissipation base is provided with a first passage penetrating axially and communicating with the outside, and the first passage communicates with the second passage and the third passage, respectively.
Preferably, the outer wall of the driving main shaft is also sleeved with a main shaft bearing, and the driving main shaft is provided with driving magnetic steel; the driving magnetic steels are fixedly arranged on the driving main shaft along the circumferential direction, and N poles and S poles of adjacent driving magnetic steels are arranged in the radial opposite direction; the motor shafting is also provided with a plurality of driven shafting, the driven shafting comprises a driven main shaft, a driven bearing, driven magnetic steel and impellers, and the driven main shafts of the plurality of driven shafting are distributed on the outer side of the driving main shaft along the circumferential direction; the driven magnetic steels are fixedly arranged on the driven main shaft along the circumferential direction, and N poles and S poles of adjacent driven magnetic steels are arranged in the radial opposite direction; the positions of the driven magnetic steels correspond to the positions of the driving magnetic steels, and the ratio of the number of the driving magnetic steels to the number of the driven magnetic steels of different driven shafting is the same as the speed increasing ratio of the driving main shaft to the corresponding driven shafting; the outer side of the front bearing seat is provided with a volute, the impeller is fixed at one end of the driven main shaft, and impellers of a plurality of driven shafting are respectively positioned in compression channels corresponding to the volute.
Preferably, the front bearing seat is provided with a plurality of driven bearing holes, and the rear bearing seat is provided with a driving bearing hole; the main shaft bearing is positioned in the driving bearing hole and sleeved at one end of the driving main shaft, and the driven bearing comprises a first driven bearing and a second driven bearing; the first driven bearing is positioned in the driven bearing hole and sleeved at one end of the driven main shaft, the inner ring of the second driven bearing is sleeved at the other end of the driven main shaft, and the outer ring of the second driven bearing is attached to the outer wall of the other end of the driving main shaft.
Preferably, a wave spring is arranged between the main shaft bearing and the rear bearing seat, and two ends of the wave spring are respectively attached to the outer side end surface of the main shaft bearing and the corresponding inner side end surface of the rear bearing seat; the wave spring is used for pre-tightening the main shaft bearing to prevent the axial movement of the main shaft bearing.
Preferably, the front bearing seat is provided with a heat radiation rib on the inner end surface, and the heat radiation rib is used for radiating heat inside the motor cylinder.
Preferably, the outer wall of the driven magnetic steel of the driven main shaft is fixedly sleeved with a carbon fiber sheath, and the carbon fiber sheath is used for preventing the driven magnetic steel from being damaged.
The heat radiation system of the magnetic suspension multistage compressor adopting the technical scheme has the advantages that:
when the compressor works, external cooling air respectively guides heat in the compressor through the first heat dissipation channel, the second heat dissipation channel and the third heat dissipation channel, so that heat generated by internal parts of the compressor such as a motor shafting, a motor stator and the like is brought out of the compressor along the plurality of heat dissipation channels; therefore, the heat dissipation efficiency of the compressor is improved, and the damage of internal parts of the compressor due to overheat is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a magnetic levitation multistage compressor.
Fig. 2 is a schematic structural diagram of a first heat dissipation channel, a second heat dissipation channel, and a third heat dissipation channel.
Fig. 3 and 4 are schematic structural views of the front bearing seat.
Fig. 5 is a schematic structural view of a multi-stage compressor rotor system.
Fig. 6 and 7 are schematic structural diagrams of sections A-A and B-B of the rotor system, respectively.
Fig. 8 is a schematic structural view of the impeller.
Fig. 9 is a schematic structural view of the motor cartridge.
Fig. 10 and 11 are schematic structural views of the rear bearing.
Fig. 12 and 13 are schematic structural diagrams of the scroll casing.
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings.
Example 1
The heat dissipation system of the magnetic suspension multistage compressor comprises a motor cylinder 12, a front bearing seat 13, a rear bearing seat 14 and a motor shafting 20; the front bearing seat 13 and the rear bearing seat 14 are respectively fixed at two ends of the motor cylinder 12; the motor stator 11 is fixedly embedded in an inner hole of the motor cylinder 12, the motor shafting 20 is provided with a driving main shaft 21, and a motor rotor 23 corresponding to the motor stator 11 in position is fixedly sleeved on the outer wall of the driving main shaft 21; the motor cylinder 12 is also provided with an air guide part 15, and the air guide part 15 is respectively provided with an upper air guide surface 151 and a lower air guide surface 152 on the radial outer side surface and the radial inner side surface; the rear bearing seat 14 is provided with a plurality of second passages 62 penetrating axially; the drive spindle 21 is provided with an axial third channel 63 and a radial fourth channel 64, and the motor cartridge 12 is provided with a radial fifth channel 65 and a radial sixth channel 66; the second channel 62, the gap between the motor rotor 23 and the motor stator 11, the gap between the upper air guiding surface 151 and the inner wall of the motor cylinder 12 and the fifth channel 65 are mutually communicated to form a first heat dissipation channel; the second channel 62, the gap between the motor rotor 23 and the motor stator 11, the gap between the motor shaft system 20 and the lower air guiding surface 152 and the sixth channel 66 are mutually communicated to form a second heat dissipation channel; the third passage 63, the fourth passage 64, and the sixth passage 66 communicate with each other to form a third heat dissipation passage. When the compressor works, external cooling air respectively guides heat in the compressor through the first heat dissipation channel, the second heat dissipation channel and the third heat dissipation channel, so that heat generated by internal parts of the compressor such as the motor shafting 20, the motor stator 11 and the like is brought out of the compressor along the plurality of heat dissipation channels; therefore, the heat dissipation efficiency of the compressor is improved, and the damage of internal parts of the compressor due to overheat is avoided.
The plurality of second passages 62 are distributed along the circumferential direction. The outside of the rear bearing seat 14 is fixedly provided with a heat dissipation base 5, the end face of the inside of the heat dissipation base 5 is fixedly provided with a heat dissipation fan 51, and the heat dissipation fan 51 is used for dissipating heat inside the motor cylinder 12.
The heat dissipation base 5 is provided with a first passage 61 penetrating axially and communicating with the outside, and the first passage 61 communicates with a second passage 62 and a third passage 63, respectively.
The outer wall of the driving main shaft 21 is also sleeved with a main shaft bearing 22, and the driving main shaft 21 is provided with driving magnetic steel 24; the plurality of driving magnetic steels 24 are fixedly arranged on the driving main shaft 21 along the circumferential direction, and the N pole and the S pole of the adjacent driving magnetic steels 24 are arranged in the radial opposite direction; the motor shafting 20 is further provided with a plurality of driven shafting 3, the driven shafting 3 comprises a driven main shaft 31, a driven bearing 32, driven magnetic steel 33 and an impeller 34, and the driven main shafts 31 of the plurality of driven shafting 3 are distributed outside the driving main shaft 21 along the circumferential direction; the driven magnetic steels 33 are fixedly arranged on the driven main shaft 31 along the circumferential direction, and the N pole and the S pole of the adjacent driven magnetic steels 33 are arranged in the radial opposite direction; the positions of the plurality of driven magnetic steels 33 correspond to the positions of the driving magnetic steels 24, and the ratio of the number of the driving magnetic steels 24 to the number of the driven magnetic steels 33 of different driven shafting 3 is the same as the speed increasing ratio of the driving main shaft 21 to the corresponding driven shafting 3; the outer side of the front bearing seat 13 is provided with a volute 4, an impeller 34 is fixed at one end of the driven main shaft 31, and the impellers 34 of the driven shafting 3 are respectively positioned in corresponding compression channels of the volute 4. When the motor is in operation, the motor stator 11 is electrified to drive the motor rotor 23 to rotate so as to drive the driving main shaft 21 to rotate; the driving magnetic steel 24 follows the driving main shaft 21 to rotate and simultaneously drives the driven main shafts 31 of the driven shafting 3 to rotate by driving the driven magnetic steels 33 of the driven shafting 3; the impellers 34 of the driven shafting 3 rotate simultaneously to perform multistage compression on the fluid to be compressed to complete the working process. In this way, compared to the speed increase of the gearbox: the driving magnetic steel 24 on the driving main shaft 21 drives the driven main shafts 31 of the driven shafting 3 simultaneously through magnetic force, namely, the driving of the driven shafting 3 can be realized without a gear box, and the volume of the whole equipment is reduced; and when the magnetic force driving is adopted, oil is not needed to lubricate the magnetic force driving device, so that the process of maintaining equipment is reduced. Compared with the direct drive of a high-speed motor: only one impeller 34 needs to be fixed on each driven main shaft 31, namely, the driven main shafts 31 only need a shorter length to drive the impellers 34 to rotate; the driven main shaft 31 with shorter length is stable in structure and is not easy to generate resonance when rotating at high speed, so that the critical rotation speed of the driven main shaft 31 is improved; moreover, each driven main shaft 31 only drives one impeller 34 with lighter total weight, the load is smaller, and resonance is not easy to generate when the driven main shaft 31 rotates at a high speed; thereby further increasing the critical rotation speed of the driven main shaft 31, further reducing the volume of the compression part of the impeller and increasing the compression ratio of the whole device.
The front bearing housing 13 is provided with a plurality of driven bearing holes 131, and the rear bearing housing 14 is provided with a driving bearing hole 141; the main shaft bearing 22 is positioned in the driving bearing hole 141 and sleeved at one end of the driving main shaft 21, and the driven bearing 32 comprises a first driven bearing 321 and a second driven bearing 322; the first driven bearing 321 is located in the driven bearing hole 131 and sleeved at one end of the driven main shaft 31, the inner ring of the second driven bearing 322 is sleeved at the other end of the driven main shaft 31, and the outer ring of the second driven bearing 322 is attached to the outer wall of the other end of the driving main shaft 21. The main shaft bearing 22 and the first driven bearing 321 respectively hard support the outer side of the driving main shaft 21 and the outer side of the driven main shaft 31, and the second driven bearing 322 soft supports the inner side of the driving main shaft 21 and the inner side of the driven main shaft 31 so as to support the driving main shaft 21 and the driven main shaft 31 simultaneously.
A wave spring 221 is arranged between the main shaft bearing 22 and the rear bearing seat 14, and two ends of the wave spring 221 are respectively attached to the outer side end surface of the main shaft bearing 22 and the inner side corresponding end surface of the rear bearing seat 14; the wave spring 221 is used to pre-tension the spindle bearing 22 to prevent axial play.
The front bearing seat 13 is provided with a heat dissipation rib 132 at an inner end surface, and the heat dissipation rib 132 is used for dissipating heat inside the motor cylinder 12.
The outer wall of the driven magnetic steel 33 of the driven main shaft 31 is fixedly sleeved with a carbon fiber sheath 331, and the carbon fiber sheath 331 is used for preventing the driven magnetic steel 33 from being damaged.
Claims (8)
1. The heat radiation system of the magnetic suspension multistage compressor is characterized in that the compressor comprises a motor cylinder (12), a front bearing seat (13), a rear bearing seat (14) and a motor shafting (20); the front bearing seat (13) and the rear bearing seat (14) are respectively fixed at two ends of the motor cylinder (12); a motor stator (11) is fixedly embedded in an inner hole of the motor cylinder (12), a motor shaft system (20) is provided with a driving main shaft (21), and a motor rotor (23) corresponding to the motor stator (11) in position is fixedly sleeved on the outer wall of the driving main shaft (21); the motor cylinder (12) is also provided with an air guide part (15), and the air guide part (15) is respectively provided with an upper air guide surface (151) and a lower air guide surface (152) on the radial outer side surface and the radial inner side surface; the rear bearing seat (14) is provided with a plurality of second channels (62) which axially penetrate through the rear bearing seat; the driving main shaft (21) is provided with an axial third channel (63) and a radial fourth channel (64) which penetrate through, and the motor cylinder (12) is provided with a radial fifth channel (65) and a radial sixth channel (66) which penetrate through; the second channel (62), a gap between the motor rotor (23) and the motor stator (11), a gap between the upper air guide surface (151) and the inner wall of the motor cylinder (12) and the fifth channel (65) are mutually communicated to form a first heat dissipation channel; the second channel (62), a gap between the motor rotor (23) and the motor stator (11), a gap between the motor shafting (20) and the lower air guide surface (152) and the sixth channel (66) are mutually communicated to form a second heat dissipation channel; the third channel (63), the fourth channel (64) and the sixth channel (66) are communicated with each other to form a third heat dissipation channel;
the outer wall of the driving main shaft (21) is also sleeved with a main shaft bearing (22), and the driving main shaft (21) is provided with driving magnetic steel (24); the driving magnetic steels (24) are fixedly arranged on the driving main shaft (21) along the circumferential direction, and N poles and S poles of adjacent driving magnetic steels (24) are arranged in the radial opposite direction; the motor shafting (20) is further provided with a plurality of driven shafting (3), the driven shafting (3) comprises a driven main shaft (31), a driven bearing (32), driven magnetic steel (33) and impellers (34), and the driven main shafts (31) of the plurality of driven shafting (3) are distributed outside the driving main shaft (21) along the circumferential direction; the driven magnetic steels (33) are fixedly arranged on the driven main shaft (31) along the circumferential direction, and the N pole and the S pole of the adjacent driven magnetic steels (33) are arranged in the radial opposite direction; the positions of the plurality of driven magnetic steels (33) correspond to the positions of the driving magnetic steels (24), and the ratio of the number of the driving magnetic steels (24) to the number of the driven magnetic steels (33) of different driven shafting (3) is the same as the speed increasing ratio of the driving main shaft (21) to the corresponding driven shafting (3); the outer side of the front bearing seat (13) is provided with a volute (4), an impeller (34) is fixed at one end of the driven main shaft (31), and the impellers (34) of the driven shafting (3) are respectively positioned in corresponding compression channels of the volute (4).
2. A heat dissipation system of a magnetic levitation multistage compressor according to claim 1, characterized in that the plurality of second channels (62) are distributed along the circumferential direction.
3. The heat radiation system of the magnetic levitation multistage compressor according to claim 1, wherein a heat radiation base (5) is fixedly arranged on the outer side of the rear bearing seat (14), a heat radiation fan (51) is fixedly arranged on the inner side end surface of the heat radiation base (5), and the heat radiation fan (51) is used for radiating heat inside the motor cylinder (12).
4. A heat radiation system of a magnetic levitation multistage compressor according to claim 3, characterized in that the heat radiation base (5) is provided with a first passage (61) penetrating axially and communicating with the outside, and the first passage (61) communicates with a second passage (62) and a third passage (63), respectively.
5. A heat dissipation system of a magnetic levitation multistage compressor according to claim 1, characterized in that the front bearing housing (13) is provided with a plurality of driven bearing holes (131) and the rear bearing housing (14) is provided with a driving bearing hole (141); the main shaft bearing (22) is positioned in the driving bearing hole (141) and sleeved at one end of the driving main shaft (21), and the driven bearing (32) comprises a first driven bearing (321) and a second driven bearing (322); the first driven bearing (321) is positioned in the driven bearing hole (131) and sleeved at one end of the driven main shaft (31), the inner ring of the second driven bearing (322) is sleeved at the other end of the driven main shaft (31), and the outer ring of the second driven bearing (322) is attached to the outer wall of the other end of the driving main shaft (21).
6. The heat radiation system of the magnetic levitation multistage compressor according to claim 1, wherein a wave spring (221) is arranged between the main shaft bearing (22) and the rear bearing seat (14), and two ends of the wave spring (221) are respectively attached to the outer side end surface of the main shaft bearing (22) and the inner side corresponding end surface of the rear bearing seat (14); the wave spring (221) is used for pre-tightening the main shaft bearing (22) to prevent the axial movement of the main shaft bearing.
7. The heat radiation system of the magnetic levitation multistage compressor according to claim 1, wherein the front bearing seat (13) is provided with heat radiation ribs (132) on an inner end surface, and the heat radiation ribs (132) are used for radiating heat inside the motor cylinder (12).
8. The heat dissipation system of a magnetic levitation multistage compressor according to claim 1, wherein a carbon fiber sheath (331) is fixedly sleeved on the outer wall of the driven magnetic steel (33) of the driven main shaft (31), and the carbon fiber sheath (331) is used for preventing the driven magnetic steel (33) from being damaged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111055647.0A CN113757136B (en) | 2021-09-09 | 2021-09-09 | Heat radiation system of magnetic suspension multistage compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111055647.0A CN113757136B (en) | 2021-09-09 | 2021-09-09 | Heat radiation system of magnetic suspension multistage compressor |
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| CN113757136A CN113757136A (en) | 2021-12-07 |
| CN113757136B true CN113757136B (en) | 2023-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111055647.0A Active CN113757136B (en) | 2021-09-09 | 2021-09-09 | Heat radiation system of magnetic suspension multistage compressor |
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|---|---|---|---|---|
| CA2075801A1 (en) * | 1990-12-24 | 1992-06-25 | Erich Rabe | Electronically switched d.c. machine |
| FR2795458A1 (en) * | 1999-06-24 | 2000-12-29 | Jeumont Ind | Indirect cooling system for large electric fan, comprises axial tubes in rotor which carry cooling fluid, stator channels linking high and low pressure zones of hollow shaft and internal stator ducts |
| CN201133381Y (en) * | 2008-03-07 | 2008-10-15 | 洛阳北方玻璃技术股份有限公司 | High temperature fan internal circulation wind cooling structure |
| CN207246048U (en) * | 2017-08-21 | 2018-04-17 | 杭州康联科技有限公司 | A kind of multistage centrifugal air compressor |
| CN109245431A (en) * | 2018-09-10 | 2019-01-18 | 石家庄金士顿轴承科技有限公司 | A kind of fuel battery air compressor high-speed motor cooling body |
| CN109715955A (en) * | 2016-09-15 | 2019-05-03 | 大金应用美国股份有限公司 | Centrifugal compressor |
| CN111725928A (en) * | 2019-03-22 | 2020-09-29 | 东芝三菱电机产业系统株式会社 | Rotating electric machine and rotor shaft |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AP2016009096A0 (en) * | 2013-09-16 | 2016-03-31 | Altigreen Propulsion Labs Private Ltd | A motor-generator shaft with centrifugal fan blades |
-
2021
- 2021-09-09 CN CN202111055647.0A patent/CN113757136B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2075801A1 (en) * | 1990-12-24 | 1992-06-25 | Erich Rabe | Electronically switched d.c. machine |
| FR2795458A1 (en) * | 1999-06-24 | 2000-12-29 | Jeumont Ind | Indirect cooling system for large electric fan, comprises axial tubes in rotor which carry cooling fluid, stator channels linking high and low pressure zones of hollow shaft and internal stator ducts |
| CN201133381Y (en) * | 2008-03-07 | 2008-10-15 | 洛阳北方玻璃技术股份有限公司 | High temperature fan internal circulation wind cooling structure |
| CN109715955A (en) * | 2016-09-15 | 2019-05-03 | 大金应用美国股份有限公司 | Centrifugal compressor |
| CN207246048U (en) * | 2017-08-21 | 2018-04-17 | 杭州康联科技有限公司 | A kind of multistage centrifugal air compressor |
| CN109245431A (en) * | 2018-09-10 | 2019-01-18 | 石家庄金士顿轴承科技有限公司 | A kind of fuel battery air compressor high-speed motor cooling body |
| CN111725928A (en) * | 2019-03-22 | 2020-09-29 | 东芝三菱电机产业系统株式会社 | Rotating electric machine and rotor shaft |
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| Publication number | Publication date |
|---|---|
| CN113757136A (en) | 2021-12-07 |
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