CN220705976U - Magnetic suspension air compressor adopting magnetic bearing water cooling - Google Patents
Magnetic suspension air compressor adopting magnetic bearing water cooling Download PDFInfo
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- CN220705976U CN220705976U CN202322317056.7U CN202322317056U CN220705976U CN 220705976 U CN220705976 U CN 220705976U CN 202322317056 U CN202322317056 U CN 202322317056U CN 220705976 U CN220705976 U CN 220705976U
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- volute
- cooling water
- water channel
- air compressor
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 238000001816 cooling Methods 0.000 title claims abstract description 34
- 239000000725 suspension Substances 0.000 title claims abstract description 23
- 239000000498 cooling water Substances 0.000 claims abstract description 69
- 238000005339 levitation Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 abstract description 9
- 238000007906 compression Methods 0.000 abstract description 9
- 230000017525 heat dissipation Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model relates to a magnetic suspension air compressor adopting magnetic bearing water cooling, wherein one end of a rotor is fixed with a first impeller, and a first volute is arranged in the radial direction of the first impeller; the other end of the rotor is fixed with a second impeller, and a second volute is radially arranged on the second impeller; the outer part of the rotor is sequentially sleeved with a first radial magnetic bearing, a stator, a second radial magnetic bearing and an axial magnetic bearing from one end to the other end; the first radial magnetic bearing is sleeved in the integrated backboard, the first volute is fixedly connected with the integrated backboard, and a volute cooling water channel and a magnetic bearing cooling water channel are further arranged in the integrated backboard. According to the utility model, the integrated backboard is arranged, and the volute cooling water channel is arranged in the integrated backboard, so that the temperature of the volute can be effectively reduced, heat generated by primary compression is prevented from being conducted into the first radial magnetic bearing through the integrated backboard, and meanwhile, the temperature of the first radial magnetic bearing can be effectively reduced through the arrangement of the magnetic bearing cooling water channel.
Description
Technical Field
The utility model relates to a magnetic suspension air compressor adopting a magnetic bearing for water cooling, and belongs to the technical field of magnetic suspension air compressors.
Background
The magnetic suspension air compressor has the advantages of high efficiency, no mechanical friction, low power consumption, low noise and no need of lubricating oil, and is widely applied in the industrial and environmental protection fields.
For the magnetic suspension air compressor with two-stage compression, a great amount of heat is generated after the air is subjected to the primary compression and the secondary compression, so that the temperature of the impeller and the temperature of the volute are greatly increased, the volute is usually fixed on a back plate, and the back plate is connected with a radial magnetic bearing seat; on the other hand, the back plate is connected with the radial magnetic bearing seat, so that the complexity of installation is greatly increased, and the length of the rotor is increased.
At present, air cooling and water cooling are widely applied to heat dissipation of magnetic levitation equipment; however, when the radial magnetic bearing in the two-stage compressed magnetic suspension air compressor is subjected to air cooling, the heat dissipation requirement is often not met, and the magnetic bearing seat is required to be subjected to air duct design, so that the complexity of the design is increased.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a magnetic suspension air compressor adopting a magnetic bearing for water cooling, wherein an integrated back plate is arranged in the magnetic suspension air compressor, and a first volute is directly arranged on the integrated back plate; and a volute cooling water channel and a magnetic bearing cooling water channel are formed in the integrated back plate, so that heat of the first volute is prevented from being conducted to the integrated back plate, and efficient cooling of the first radial magnetic bearing can be realized.
The technical scheme of the utility model is as follows:
a magnetic suspension air compressor adopting magnetic bearing water cooling comprises a rotor, a stator, a first radial magnetic bearing and a second radial magnetic bearing; one end of the rotor is fixed with a first impeller, and a first volute is radially arranged on the first impeller; the other end of the rotor is fixed with a second impeller, and a second volute is radially arranged on the second impeller; the outer part of the rotor is sequentially sleeved with a first radial magnetic bearing, a stator, a second radial magnetic bearing and an axial magnetic bearing from one end to the other end;
the first radial magnetic bearing is sleeved in the integrated backboard, the first volute is fixedly connected with the integrated backboard, and a volute cooling water channel and a magnetic bearing cooling water channel are further arranged in the integrated backboard.
According to the utility model, the integrated back plate is arranged in the magnetic suspension air compressor, and the volute cooling water channel is arranged in the integrated back plate, so that the temperature of the volute can be effectively reduced, heat generated by primary compression is prevented from being conducted into the first radial magnetic bearing through the integrated back plate, and meanwhile, the temperature of the first radial magnetic bearing can be effectively reduced through the arrangement of the magnetic bearing cooling water channel. Because the first radial magnetic bearing adopts a water cooling mode, an air cooling channel does not need to be arranged on the integrated backboard, and the design of the integrated backboard is further simplified.
According to the utility model, the integrated back plate comprises a volute fixing plate and a magnetic bearing seat which are integrally formed, wherein the first volute is fixed on the front side of the volute fixing plate, and the first radial magnetic bearing is fixed inside the magnetic bearing seat. By adopting the integrated structure, the design and the processing can be facilitated, and meanwhile, the length of the rotor of the magnetic suspension motor can be reduced.
According to the utility model, the volute cooling water channel is arranged inside the volute fixing plate and is close to the air inlet end of the first volute. The temperature of the hot air entering the first volute can be effectively reduced, and heat conduction to the integrated backboard is avoided.
According to the utility model, the magnetic bearing cooling water channel is arranged in the magnetic bearing seat and is matched with the installation position of the first radial magnetic bearing, so that the windings of the first radial magnetic bearing are radiated to keep the stable and efficient operation of the radial magnetic bearing.
According to the utility model, the magnetic bearing cooling water channel is communicated with the volute cooling water channel, the cooling water inlet pipe is communicated with the water inlet of the magnetic bearing cooling water channel, and the water outlet of the volute cooling water channel is communicated with the cooling water outlet pipe.
Cooling water firstly flows through the magnetic bearing cooling water channel, enters the volute cooling water channel to cool the volute, and finally is input into a cooling water outlet pipe through a water outlet of the volute cooling water channel. Through the water course design, can guarantee that the magnetic bearing cooling water course carries out abundant cooling to first radial magnetic bearing, spiral case cooling water course can avoid heat to be conducted to first radial magnetic bearing by the spiral case through integrated backplate simultaneously, guarantees the cooling effect of first radial magnetic bearing.
According to the utility model, the water inlet and the water outlet are preferably arranged at the rear side of the volute fixing plate.
According to the utility model, a front protection bearing is arranged between the integrated backboard and the rotor, and when the rotor falls back, the rear protection bearing can protect the rotor, so that the damage to the rotor is avoided, and the service life of the rotor is influenced. The integrated backboard is used, and meanwhile, the function of a front protection bearing seat is replaced, so that the structure is simpler.
According to the utility model, the second radial magnetic bearing and the axial magnetic bearing are sleeved in the rear magnetic bearing seat, the front end of the rear magnetic bearing seat is connected with the shell, the rear end of the rear magnetic bearing seat is connected with the rear back plate, and the second volute is arranged on the rear back plate.
According to the utility model, preferably, a spiral rear magnetic bearing cooling water channel is arranged in the rear magnetic bearing seat. The rear magnetic bearing cooling water channel is used for radiating heat for the second radial magnetic bearing and the axial magnetic bearing, so that the heat generated by secondary compression is prevented from being conducted to the rear magnetic bearing seat through the rear back plate, and the temperature of the second radial magnetic bearing and the temperature of the axial magnetic bearing are prevented from being too high.
According to the utility model, a rear protection bearing seat is arranged between the axial magnetic bearing and the rear back plate, and a rear protection bearing is sleeved in the rear protection bearing seat. When the rotor falls back, the rear protection bearing can play a role in protecting the rotor, so that damage to the rotor is avoided, and the service life of the rotor is influenced.
According to the utility model, the shell is provided with a plurality of air inlets and air outlets, and the air inlets are positioned in gaps between the stator and the rear magnetic bearing seat; the air outlet is positioned in a gap between the stator and the integrated backboard. The heat dissipation of the stator, the rotor, the second radial magnetic bearing and the axial magnetic bearing can be realized through the air cooling provided by the external fan.
The beneficial effects of the utility model are as follows:
1. the utility model provides a magnetic suspension air compressor adopting magnetic bearing water cooling, wherein an integrated back plate structure is arranged in the air compressor, the structure integrates the functions of a fixed back plate of a first volute, a radial magnetic bearing seat and a front protection axial seat, and the design and the installation are simpler.
2. The spiral case cooling water channel and the magnetic bearing cooling water channel are arranged on the integrated backboard, so that the spiral case and the first radial magnetic bearing can be effectively radiated.
3. According to the magnetic suspension air compressor provided by the utility model, the first volute, the first radial magnetic bearing, the second radial magnetic bearing and the axial magnetic bearing are subjected to heat dissipation in a water cooling mode; meanwhile, the air inlet and the air outlet are formed in the shell, and the rotor and the stator are cooled through air cooling, so that the temperature of the magnetic suspension air compressor can be effectively ensured to be kept within a reasonable temperature range.
Drawings
Fig. 1 is a schematic cross-sectional view of a magnetic levitation air compressor provided by the utility model.
Fig. 2 is a schematic structural diagram of an integrated back plate according to the present utility model.
FIG. 3 is a schematic cross-sectional view of the integrated back plate in the A-A direction.
Fig. 4 is a schematic structural diagram of a water channel in an integrated back plate according to the present utility model.
Fig. 5 is a schematic cross-sectional view of another magnetic levitation air compressor according to the present utility model.
1. The device comprises a first impeller, 2, a first volute, 3, an integrated back plate, 4, a shell, 5, a rotor, 6, a stator, 7, a back plate, 8, a back magnetic bearing seat, 9, an axial magnetic bearing, 10, a second radial magnetic bearing, 11, a second volute, 12, a first radial magnetic bearing, 13, a second impeller, 14, a magnetic bearing cooling water channel, 15, a volute cooling water channel, 16, a water inlet, 17, a water outlet, 18 and a back magnetic bearing cooling water channel.
Detailed Description
The following description of the several embodiments of the present application, while clearly and fully describing the embodiments of the present utility model, is provided by way of illustration, and is not intended to limit the utility model to the particular embodiments disclosed, but to limit the scope of the utility model to all other embodiments available to one of ordinary skill in the art without inventive faculty based on the embodiments disclosed herein.
Unless a direction is defined separately, the directions of up, down, left, right, etc. referred to herein are all directions of up, down, left, right, etc. as shown in fig. 1 of the embodiment of the present application, and if the specific gesture changes, the directional indication changes accordingly. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Furthermore, in various embodiments of the present disclosure, the same or similar reference numerals denote the same or similar components.
In the present utility model, unless explicitly specified and limited otherwise, the terms "coupled," "affixed," and the like are to be construed broadly, and for example, "coupled" may be either fixedly coupled, detachably coupled, or integrally formed, unless otherwise explicitly specified. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of the claimed utility model.
Example 1
A magnetic suspension air compressor adopting magnetic bearing water cooling, as shown in figure 1, comprises a rotor 5, a stator 6, a first radial magnetic bearing 12 and a second radial magnetic bearing 10; one end of the rotor 5 is fixed with a first impeller 1, and a first volute 2 is radially arranged on the first impeller 1; the other end of the rotor 5 is fixed with a second impeller 13, and a second volute 11 is radially arranged on the second impeller 13; the outer part of the rotor 5 is sequentially sleeved with a first radial magnetic bearing 12, a stator 6, a second radial magnetic bearing 10 and an axial magnetic bearing 9 from one end to the other end;
the first radial magnetic bearing 12 is sleeved in the integrated backboard 3, the first volute 2 is fixedly connected with the integrated backboard 3, and a volute cooling water channel 15 and a magnetic bearing cooling water channel 14 are further arranged in the integrated backboard 3.
According to the utility model, the integrated backboard 3 is arranged in the magnetic suspension air compressor, and the volute cooling water channel 15 is arranged in the integrated backboard 3, so that the temperature of the volute can be effectively reduced, heat generated by primary compression is prevented from being conducted into the first radial magnetic bearing 12 through the integrated backboard 3, and meanwhile, the temperature of the first radial magnetic bearing 12 can be effectively reduced through the arrangement of the magnetic bearing cooling water channel 14.
Because the first radial magnetic bearing 12 is water-cooled, an air cooling channel does not need to be arranged on the integrated backboard 3, and the design of the integrated backboard 3 is further simplified.
As shown in fig. 2 and 3, the integrated back plate 3 includes a scroll fixing plate and a magnetic bearing housing integrally formed, the first scroll 2 is fixed at a front side of the scroll fixing plate, and the first radial magnetic bearing 12 is fixed inside the magnetic bearing housing. By adopting the integrated structure, the design and the processing can be convenient, and meanwhile, the length of the magnetic suspension motor rotor 5 can be reduced.
As shown in fig. 3, the volute cooling water passage 15 is opened inside the volute fixing plate and is close to the intake end of the first volute 2. The temperature of the hot air entering the volute can be effectively reduced, and heat conduction into the integrated backboard 3 is avoided.
As shown in fig. 3, the magnetic bearing cooling water channel 14 is opened inside the magnetic bearing seat and is adapted to the installation position of the first radial magnetic bearing 12, so as to radiate heat from the windings of the first radial magnetic bearing 12, so as to maintain stable and efficient operation of the first radial magnetic bearing 12.
As shown in fig. 4, the magnetic bearing cooling water channel 14 is communicated with the spiral casing cooling water channel 15, the cooling water inlet pipe is communicated with the water inlet 16 of the magnetic bearing cooling water channel 14, and the water outlet 17 of the spiral casing cooling water channel 15 is communicated with the cooling water outlet pipe.
The cooling water firstly flows through the magnetic bearing cooling water channel 14, enters the volute cooling water channel 15 to cool the volute, and finally is input into a cooling water outlet pipe through a water outlet 17 of the volute cooling water channel 15. Through the water course design, can guarantee that magnetic bearing cooling water course 14 carries out abundant cooling to first radial magnetic bearing 12, spiral case cooling water course 15 can avoid heat to pass through integrated backplate 3 conduction to first radial magnetic bearing 12 by the spiral case simultaneously, guarantees the cooling effect of first radial magnetic bearing 12.
As shown in fig. 2, the water inlet 16 and the water outlet 17 are opened at the rear side of the volute fixing plate.
As shown in fig. 1, the casing 4 is provided with a plurality of air inlets and air outlets, and the air inlets are positioned in a gap between the stator 6 and the rear magnetic bearing seat 8; the air outlet is located in the gap between the stator 6 and the integrated back plate 3. The heat dissipation of the stator 6 and the rotor 5 can be realized through the air cooling provided by the external fan. Meanwhile, the air cooling provided by the external fan can also play a certain role in heat dissipation for the first radial magnetic bearing 12, the second radial magnetic bearing 10 and the axial magnetic bearing 9.
Example 2
A magnetic levitation air compressor using magnetic bearing water cooling, which is different from embodiment 1 in that:
as shown in fig. 5, the second radial magnetic bearing 10 and the axial magnetic bearing 9 are sleeved inside the rear magnetic bearing seat 8, the front end of the rear magnetic bearing seat 8 is connected with the casing 4, the rear end of the rear magnetic bearing seat 8 is connected with the rear back plate 7, and the second volute 11 is mounted on the rear back plate 7.
Considering that the second radial magnetic bearing 10 and the axial magnetic bearing 9 are sleeved in the rear magnetic bearing seat 8, if the form of the integrated back plate 3 is adopted, when the second impeller 13 needs to be replaced, the components which need to be disassembled are complex, so that the integrated back plate 3 structure is more suitable for replacing the magnetic bearing seat and the front back plate which are installed by the first radial magnetic bearing 12.
A spiral rear magnetic bearing cooling water channel 18 is arranged in the rear magnetic bearing seat 8. The rear magnetic bearing cooling water channel 18 is used for radiating heat for the second radial magnetic bearing 10 and the axial magnetic bearing 9, so that the heat generated by secondary compression is prevented from being conducted to the rear magnetic bearing seat 8 through the rear back plate 7, and the temperature of the second radial magnetic bearing 10 and the temperature of the axial magnetic bearing 9 are prevented from being too high.
Example 3
A magnetic levitation air compressor using magnetic bearing water cooling, which is different from embodiment 1 in that:
as shown in fig. 1, a front protection bearing is further arranged between the integrated back plate 3 and the rotor 5, and when the rotor 5 falls back, the rear protection bearing can protect the rotor 5, so that damage to the rotor 5 is avoided, and the service life of the rotor 5 is influenced. The integrated backboard 3 is used, and simultaneously replaces the function of the front protection bearing seat, so that the structure is simpler.
A rear protection bearing seat is also arranged between the axial magnetic bearing 9 and the rear back plate 7, and a rear protection bearing is sleeved in the rear protection bearing seat. When rotor 5 falls back, the rear protection bearing can play a role in protecting rotor 5, and damage to rotor 5 is avoided, so that the service life of rotor 5 is influenced.
The utility model provides a working method of a magnetic suspension air compressor adopting radial magnetic bearing water cooling, which comprises the following steps: the cooling water enters the magnetic bearing cooling water channel 14 through the water inlet 16 formed on the volute fixing plate to cool the first radial magnetic bearing 12, then enters the volute cooling water channel 15 to cool the first volute, and finally is discharged from the water outlet 17.
In addition, cooling water enters a spiral rear magnetic bearing cooling water channel 18 formed in the rear magnetic bearing seat 8 to cool the second radial magnetic bearing 10 and the axial magnetic bearing 9, so that the influence of heat generated by secondary compression on the second radial magnetic bearing 10 and the axial magnetic bearing 9 is effectively reduced.
The cooling air provided by the external fan enters the magnetic suspension air compressor through the air inlet formed in the shell 4, and a part of air is discharged through the gap between the rotor 5 and the stator 6 and then through the air outlet between the stator 6 and the integrated backboard 3, so that the cooling of the rotor 5 and the stator 6 is realized.
While the foregoing description illustrates and describes the preferred embodiments of the present application, it is to be understood that this application is not limited to the forms disclosed herein, but is not to be construed as an exclusive use of other embodiments, and is capable of many other combinations, modifications and environments, and is capable of changes within the scope of the inventive subject matter, either as a result of the foregoing teachings or as a result of knowledge or technology in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the present utility model are intended to be within the scope of the appended claims.
Claims (9)
1. The magnetic suspension air compressor adopting magnetic bearing water cooling is characterized by comprising a rotor, a stator, a first radial magnetic bearing and a second radial magnetic bearing; one end of the rotor is fixed with a first impeller, and a first volute is radially arranged on the first impeller; the other end of the rotor is fixed with a second impeller, and a second volute is radially arranged on the second impeller; the outer part of the rotor is sequentially sleeved with a first radial magnetic bearing, a stator, a second radial magnetic bearing and an axial magnetic bearing from one end to the other end;
the first radial magnetic bearing is sleeved in the integrated backboard, the first volute is fixedly connected with the integrated backboard, and a volute cooling water channel and a magnetic bearing cooling water channel are further arranged in the integrated backboard.
2. The magnetically levitated air compressor of claim 1, wherein the integrated back plate comprises a spiral case fixing plate and a magnetic bearing seat which are integrally formed, the first spiral case is fixed on the front side of the spiral case fixing plate, and the first radial magnetic bearing is fixed inside the magnetic bearing seat.
3. A magnetically levitated air compressor cooled by magnetic bearings according to claim 2, wherein the volute cooling water channel is provided inside the volute fixing plate and is close to the air inlet end of the first volute.
4. A magnetic levitation air compressor using magnetic bearing water cooling as defined in claim 2, wherein the magnetic bearing cooling water channel is formed in the magnetic bearing seat and adapted to the installation position of the first radial magnetic bearing.
5. A magnetic levitation air compressor adopting magnetic bearing water cooling as claimed in claim 2, wherein the magnetic bearing cooling water channel is communicated with the volute cooling water channel, the cooling water inlet pipe is communicated with the water inlet of the magnetic bearing cooling water channel, and the water outlet of the volute cooling water channel is communicated with the cooling water outlet pipe.
6. A magnetically levitated air compressor cooled by magnetic bearings according to claim 5, wherein the water inlet and the water outlet are formed at the rear side of the volute fixing plate.
7. The magnetic suspension air compressor adopting magnetic bearing water cooling according to claim 1, wherein the second radial magnetic bearing and the axial magnetic bearing are sleeved in the rear magnetic bearing seat, the front end of the rear magnetic bearing seat is connected with the shell, the rear end of the rear magnetic bearing seat is connected with the rear back plate, and the second volute is installed on the rear back plate.
8. A magnetically levitated air compressor cooled by magnetic bearings according to claim 7, wherein the back magnetic bearing block is internally provided with a spiral back magnetic bearing cooling water channel.
9. A magnetic levitation air compressor adopting magnetic bearing water cooling as claimed in any one of claims 1-8, wherein the casing is provided with a plurality of air inlets and air outlets, and the air inlets are positioned in the gap between the stator and the rear magnetic bearing seat; the air outlet is positioned in a gap between the stator and the integrated backboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322317056.7U CN220705976U (en) | 2023-08-28 | 2023-08-28 | Magnetic suspension air compressor adopting magnetic bearing water cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322317056.7U CN220705976U (en) | 2023-08-28 | 2023-08-28 | Magnetic suspension air compressor adopting magnetic bearing water cooling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220705976U true CN220705976U (en) | 2024-04-02 |
Family
ID=90435819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322317056.7U Active CN220705976U (en) | 2023-08-28 | 2023-08-28 | Magnetic suspension air compressor adopting magnetic bearing water cooling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220705976U (en) |
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2023
- 2023-08-28 CN CN202322317056.7U patent/CN220705976U/en active Active
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