CN117108526A - Magnetic suspension centrifugal compressor with efficient heat dissipation - Google Patents
Magnetic suspension centrifugal compressor with efficient heat dissipation Download PDFInfo
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- CN117108526A CN117108526A CN202311083676.7A CN202311083676A CN117108526A CN 117108526 A CN117108526 A CN 117108526A CN 202311083676 A CN202311083676 A CN 202311083676A CN 117108526 A CN117108526 A CN 117108526A
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- heat dissipation
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- sensor
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 90
- 239000000725 suspension Substances 0.000 title claims abstract description 44
- 238000005339 levitation Methods 0.000 claims description 19
- 238000005192 partition Methods 0.000 claims description 13
- 230000005855 radiation Effects 0.000 abstract 10
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
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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
- F04D29/051—Axial thrust balancing
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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
- F04D29/058—Bearings magnetic; electromagnetic
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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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- 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
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/5846—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling by injection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/09—Structural association with bearings with magnetic bearings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
- H02K9/223—Heat bridges
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N15/00—Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
A magnetic suspension centrifugal compressor with high-efficiency heat dissipation comprises a shell, a stator, a rotor assembly, a heat dissipation assembly and a magnetic suspension assembly, wherein the shell is provided with a plurality of air inlet holes, and the stator is arranged in the shell; the rotor assembly comprises a rotating shaft, a thrust disc and two impellers, the rotating shaft is rotationally connected with the casing, the rotating shaft penetrates through the stator, an air channel is formed between the rotating shaft and the stator, the thrust disc is arranged on the shoulder of the rotating shaft, and the two impellers are respectively arranged at two ends of the rotating shaft; the heat radiation assembly comprises a heat radiation fan and a heat radiation cover, wherein the heat radiation fan is arranged at one end of the rotating shaft far away from the thrust disc, the heat radiation cover is arranged at one end of the casing, the heat radiation cover is communicated with the casing, the heat radiation cover is provided with the heat radiation fan, the heat radiation cover is provided with an air outlet, and the air inlet hole, the air channel and the air outlet form a heat radiation channel; the rotating shaft is penetrated with a magnetic suspension component. The compressor is characterized in that a thrust disc is arranged on the shoulder part of the rotating shaft, so that the rotating shaft is shortened; the external air flow sequentially flows through the air inlet, the air channel and the air outlet through the heat dissipation fan, and heat generated by the stator, the rotating shaft and the thrust disc is taken away.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a magnetic suspension centrifugal compressor with efficient heat dissipation.
Background
With the continuous development of society, people pay more attention to environmental protection, health and product quality. The compressed air energy is also increasingly widely used as one of the very environment-friendly energy sources. The magnetic suspension centrifugal compressor has the characteristic of large air volume, breaks through the contact between the bearing and the shaft, and realizes the oil-free operation of the whole machine without contact.
The magnetic suspension centrifugal compressor needs to cool the magnetic suspension motor in the operation process, at present, a cooler is generally arranged, the cooler provides cold source and is cooled by air cooling and water cooling, a fan is needed to be added in the whole machine, extra electricity is caused, and the volume is larger and the weight is heavier.
Disclosure of Invention
In view of the above, it is necessary to provide a compact and efficient heat dissipation magnetic suspension centrifugal compressor.
The magnetic suspension centrifugal compressor with high-efficiency heat dissipation comprises a shell, a stator, a rotor assembly, a heat dissipation assembly and a magnetic suspension assembly, wherein the shell is provided with a plurality of air inlet holes, and the stator is arranged in the shell; the rotor assembly comprises a rotating shaft, a thrust disc and two impellers, the rotating shaft is rotationally connected with the casing, the rotating shaft penetrates through the stator, an air channel is formed between the rotating shaft and the stator, the thrust disc is arranged on the shoulder of the rotating shaft, and the two impellers are respectively arranged at two ends of the rotating shaft; the heat dissipation assembly comprises a heat dissipation fan and a heat dissipation cover, the heat dissipation fan is arranged at one end of the rotating shaft far away from the thrust disc, the heat dissipation cover is arranged at one end of the casing, the heat dissipation cover is communicated with the casing, the heat dissipation fan is arranged on the heat dissipation cover, the heat dissipation cover is provided with an air outlet, and the air inlet, the air channel and the air outlet form a heat dissipation channel; the rotating shaft penetrates through the magnetic suspension assembly.
In one embodiment, the heat dissipation assembly further comprises a heat conduction member, and the heat conduction member is sleeved on the stator; one end of the heat conducting piece is abutted against the stator, and the other end is abutted against the shell.
In one embodiment, the heat conducting member includes a base portion, a plurality of fin portions, each fin portion being disposed at intervals along a circumferential direction of the base portion, a gap being provided between the fin portion and an inner side of the casing, the base portion being in contact with an outer side of the stator; a heat dissipation groove is formed between two adjacent fin parts, and the heat dissipation groove is communicated with the air inlet; one end of the partition plate part is abutted against one end of the base part, the other end of the partition plate part is abutted against the inner side of the shell, and the partition plate part seals one end of the heat dissipation groove close to the air outlet; one end of the supporting part is connected with the top of the fin part, and the other end of the supporting part is abutted against the inner side of the shell.
In one embodiment, the rotor assembly further comprises a first magnetic ring, wherein the first magnetic ring is installed at one end of the rotating shaft, and the first magnetic ring is arranged at one side of the thrust disc; the magnetic suspension assembly further comprises a first shield, a first thrust bearing, a second thrust bearing, a first magnetic suspension bearing, an axial sensor and a first radial sensor, wherein the first shield is installed at one end of the shell, the first thrust bearing and the second thrust bearing are respectively arranged at two sides of the thrust disc, the first thrust bearing, the second thrust bearing, the first magnetic suspension bearing, the axial sensor and the first radial sensor are all installed in the first shield, the axial sensor and the first radial sensor are axially arranged along the rotating shaft, and the axial sensor and the first radial sensor are all corresponding to the first magnetic ring.
In one embodiment, the heat dissipation device further comprises two volutes, one volute is arranged at one end of the first shield, which is far away from the shell, and the other volute is arranged at one end of the heat dissipation cover, which is far away from the shell; the spiral cases are in one-to-one correspondence with the impellers, and the spiral cases cover the impellers.
In one embodiment, the first shield includes a first fixing portion, a second fixing portion, a third fixing portion and a fourth fixing portion that are sequentially connected, the first thrust bearing is mounted on the first fixing portion, the second thrust bearing is mounted on the second fixing portion, the first magnetic suspension bearing is mounted on the third fixing portion, and the axial sensor and the first radial sensor are mounted on the fourth fixing portion.
In one embodiment, the first magnetic ring includes a first magnet, a second magnet and a third magnet which are sequentially connected, two axial sensors are provided, one axial sensor is used for corresponding to a connection position of the first magnet and the second magnet, the other axial sensor is used for corresponding to a connection position of the third magnet and the second magnet, and the first radial sensor corresponds to the second magnet.
In one embodiment, the rotor assembly further comprises a second magnetic ring sleeved at one end of the rotating shaft far away from the first magnetic ring; the magnetic suspension assembly further comprises a second shield, a second magnetic suspension bearing, a second radial sensor and a speed sensor, wherein the second shield is arranged at one end of the shell far away from the first shield, the second magnetic suspension bearing and the second radial sensor are both arranged in the second shield, and the second radial sensor is arranged corresponding to the second magnetic ring; the speed sensor is arranged on one side of the second radial sensor.
In one embodiment, the second magnetic ring includes a first magnetic portion and a second magnetic portion connected to one side of the first magnetic portion, the second magnetic portion is provided with a notch, the second radial sensor corresponds to the first magnetic portion, and the speed sensor corresponds to the second magnetic portion.
In one embodiment, two ends of the stator are arranged in a horn shape.
According to the magnetic suspension centrifugal compressor with high-efficiency heat dissipation, the thrust disc is arranged on the shoulder part of the rotating shaft, so that the rotating shaft is shortened, and the rotating speed is improved; through the rotation of the heat dissipation fan, external air flows sequentially through the air inlet, the air duct and the air outlet, so that heat generated in the use process of the stator, the rotating shaft and the thrust disc is taken away; the magnetic suspension centrifugal compressor with high-efficiency heat dissipation is compact in structure and convenient to use.
Drawings
FIG. 1 is a schematic diagram of a magnetic levitation centrifugal compressor with efficient heat dissipation according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is an enlarged view of circle B of FIG. 2;
FIG. 4 is an enlarged view of circle C of FIG. 2;
FIG. 5 is a schematic view of a part of the magnetic levitation centrifugal compressor of FIG. 1 with efficient heat dissipation;
FIG. 6 is an exploded view of a first shroud, a first thrust bearing, a second thrust bearing, a first magnetic bearing, an axial sensor, and a first radial sensor of the high-efficiency heat-dissipating magnetic levitation centrifugal compressor of FIG. 1;
FIG. 7 is an exploded view of a second shroud, a second magnetic bearing, a second radial sensor, and a speed sensor of the high-efficiency heat-dissipating magnetic levitation centrifugal compressor of FIG. 1.
The meaning of the reference numerals in the drawings are:
100. magnetic suspension centrifugal compressor of the high-efficient heat dissipation;
10. a housing; 11. an air inlet hole; 20. a stator; 30. a rotor assembly; 31. a rotating shaft; 310. an air duct; 32. a thrust plate; 33. an impeller; 34. a first magnetic ring; 341. a first magnet; 342. a second magnet; 343. a third magnet; 35. a second magnetic ring; 351. a first magnetic part; 352. a second magnetic part; 36. a first support bearing; 37. a second support bearing; 40. a heat dissipation assembly; 41. a heat dissipation fan; 42. a heat dissipation cover; 420. an air outlet; 43. a heat conductive member; 431. a base portion; 432. a fin section; 433. a heat sink; 434. a partition plate portion; 435. a support part;
50. a magnetic levitation assembly; 51. a first shield; 511. a first fixing portion; 512. a second fixing portion; 513. a third fixing portion; 514. a fourth fixing portion; 52. a first thrust bearing; 53. a second thrust bearing; 54. a first magnetic bearing; 55. an axial sensor; 56. a first radial sensor; 57. a second shield; 570. a through hole; 571. a first mounting portion; 572. a second mounting portion; 58. the second magnetic bearing; 59. a second radial sensor; 59a, a speed sensor; 60. a volute; 61. an air suction port; 62. and an air outlet.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Referring to fig. 1 to 7, in order to provide a magnetic suspension centrifugal compressor 100 with efficient heat dissipation according to an embodiment of the invention, the magnetic suspension centrifugal compressor comprises a casing 10, a stator 20, a rotor assembly 30, a heat dissipation assembly 40 and a magnetic suspension assembly 50, wherein the casing 10 is provided with a plurality of air inlet holes 11, the rotor assembly 30 comprises a rotating shaft 31, a thrust disc 32 and two impellers 33, the heat dissipation assembly 40 comprises a heat dissipation fan 41 and a heat dissipation cover 42, an air channel 310 is formed between the rotating shaft 31 and the stator 20, and the heat dissipation cover 42 is provided with an air outlet 420; the magnetic suspension centrifugal compressor 100 with high heat dissipation makes the rotating shaft 31 shorten by installing the thrust disc 32 on the shoulder of the rotating shaft 31, thereby improving the rotating speed; through the rotation of the heat dissipation fan 41, external air flows sequentially through the air inlet 11, the air duct 310 and the air outlet 420, so that heat generated in the use process of the stator 20, the rotating shaft 31 and the thrust disc 32 is taken away; the magnetic suspension centrifugal compressor 100 with high-efficiency heat dissipation is compact in structure and convenient to use.
As shown in fig. 1 and 2, in the present embodiment, the casing 10 is provided with a plurality of air inlet holes 11, and optionally, each air inlet hole 11 is disposed along the circumferential direction of the casing 10 so that external air flows into the casing 10; further, the casing 10 is made of a heat conductive metal material.
As shown in fig. 3 and 5, the stator 20 is installed in the casing 10; alternatively, both ends of the stator 20 are provided in a horn shape.
Referring to fig. 2 to 5, the rotor assembly 30 includes a rotating shaft 31, a thrust disc 32 and two impellers 33, the rotating shaft 31 is rotatably connected with the casing 10, the rotating shaft 31 penetrates through the setting member 20, and an air duct 310 is formed between the rotating shaft 31 and the stator 20 for heat dissipation; the thrust disc 32 is arranged on the shoulder of the rotating shaft 31, so that the rotating shaft 31 is shortened, the rotating speed is increased, and the compression efficiency is improved; two impellers 33 are respectively arranged at two ends of the rotating shaft 31, so that synchronous operation is realized, and the efficiency is improved. In an embodiment, the rotor assembly 30 further includes a first magnetic ring 34, the first magnetic ring 34 is mounted at one end of the rotating shaft 31, the first magnetic ring 34 is disposed at one side of the thrust disc 32, and optionally, the first magnetic ring 34 includes a first magnet 341, a second magnet 342, and a third magnet 343 sequentially connected; the rotor assembly 30 further comprises a second magnetic ring 35, and the second magnetic ring 35 is sleeved at one end of the rotating shaft 31 far away from the first magnetic ring 34; optionally, the second magnetic ring 35 includes a first magnetic part 351 and a second magnetic part 352 connected to one side of the first magnetic part 351, and further, the second magnetic part 352 is provided with a notch; in an embodiment, the rotor assembly 30 further includes a first support bearing 36 and a second support bearing 37, the first support bearing 36 and the second support bearing 37 are respectively sleeved at two ends of the rotating shaft 31, the first support bearing 36 is disposed at one side of the first magnetic ring 34, and the second support bearing 37 is disposed at one side of the second magnetic ring 35.
As shown in fig. 1 to 5, the heat dissipation assembly 40 includes a heat dissipation fan 41 and a heat dissipation cover 42, the heat dissipation fan 41 is mounted at one end of the rotating shaft 31 far away from the thrust disc 32, the heat dissipation cover 42 is mounted at one end of the casing 10, the heat dissipation cover 42 is communicated with the casing 10, the heat dissipation cover 42 covers the heat dissipation fan 41, the heat dissipation cover 42 is provided with an air outlet 420, and the air inlet 11, the air duct 310 and the air outlet 420 form a heat dissipation channel; along with the rotation of the heat dissipation fan 41, the external air flows through the air inlet 11, the air duct 310 and the air outlet 420 in sequence, so that heat generated in the use process of the stator 20, the rotating shaft 31 and the thrust disc 32 is taken away.
In an embodiment, the heat dissipation assembly 40 further includes a heat conducting member 43, and the heat conducting member 43 is sleeved on the stator 20; one end of the heat conducting member 43 abuts against the stator 20, and the other end abuts against the casing 10, so that heat generated by the stator 20 is conducted to the casing 10 for heat dissipation. Alternatively, the heat conductive member 43 includes a base portion 431 and fin portions 432, the base portion 431 abuts against the outside of the stator 20, the fin portions 432 are plural, each fin portion 432 is provided at intervals along the circumferential direction of the base portion 431, and a gap is provided between the fin portion 432 and the inside of the casing 10 for air circulation; a heat dissipation groove 433 is formed between two adjacent fin portions 432, and the heat dissipation groove 433 communicates with the air inlet hole 11 so that the fin portions 432 dissipate heat. Further, the heat conducting member 43 further includes a partition plate portion 434 and a supporting portion 435, wherein one end of the partition plate portion 434 abuts against one end of the base portion 431, and the other end abuts against the inner side of the casing 10, and the partition plate portion 434 seals one end of the heat dissipation groove 433 close to the air outlet 420, so that the air flow sequentially flows through the air inlet 11, the heat dissipation groove 433, the air channel 310 and the air outlet 420, and heat is fully taken away; one end of the supporting portion 435 is connected with the top of the fin portion 432, the other end abuts against the inner side of the casing 10, and the partition portion 434 is matched with the supporting portion 435, so that heat of the fin portion 432 can be conducted to the casing 10, and a fixing effect is achieved.
As shown in fig. 1 to 4, 6 and 7, the rotating shaft 31 is penetrated by a magnetic suspension assembly 50, the magnetic suspension assembly 50 includes a first shield 51, a first thrust bearing 52, a second thrust bearing 53, a first magnetic suspension bearing 54, an axial sensor 55 and a first radial sensor 56, the first shield 51 is mounted at one end of the casing 10, and the first support bearing 36 is mounted at one end of the first shield 51; optionally, the first shield 51 includes a first fixing portion 511, a second fixing portion 512, a third fixing portion 513, and a fourth fixing portion 514 connected in sequence. The first thrust bearing 52 and the second thrust bearing 53 are respectively arranged at two sides of the thrust disk 32, and further, gaps exist between the first thrust bearing 52 and the thrust disk 32 and between the second thrust bearing 53 and the thrust disk 32; when the device works, the first thrust bearing 52 and the second thrust bearing 53 generate a magnetic field after being electrified, the thrust disc 32 moves between the first thrust bearing 52 and the second thrust bearing 53, and heat is generated in the rotation process of the thrust disc 32; further, the first thrust bearing 52 is mounted to the first fixing portion 511, and the second thrust bearing 53 is mounted to the second fixing portion 512.
In an embodiment, the first thrust bearing 52, the second thrust bearing 53, the first magnetic bearing 54, the axial sensor 55 and the first radial sensor 56 are all installed in the first shield 51, and the rotating shaft 31 passes through the first thrust bearing 52, the second thrust bearing 53 and the first magnetic bearing 54. The axial sensor 55 and the first radial sensor 56 are disposed along the axial direction of the rotating shaft 31, and the axial sensor 55 and the first radial sensor 56 are disposed corresponding to the first magnetic ring 34. Alternatively, the first magnetic bearing 54 is mounted on the third fixed portion 513, and the axial sensor 55 and the first radial sensor 56 are mounted on the fourth fixed portion 514. Further, two axial sensors 55 are provided, one axial sensor 55 is used for corresponding to the connection position between the first magnet 341 and the second magnet 342, the other axial sensor 55 is used for corresponding to the connection position between the third magnet 343 and the second magnet 342, the first radial sensor 56 corresponds to the second magnet 342, the axial position of the first magnetic ring 34 is detected by the axial sensor 55, the radial position of the first magnetic ring 34 is detected by the first radial sensor 56, and the sensing accuracy of the position of the rotating shaft 31 is improved. The magnetic levitation assembly 50 further includes a first protective housing (not shown) to which the axial sensor 55 and the first radial sensor 56 are mounted, and a fourth fixed portion 514 to which the first protective housing is mounted.
Optionally, the magnetic levitation assembly 50 further includes a second shroud 57, a second magnetic levitation bearing 58 and a second radial sensor 59, the second shroud 57 is installed at one end of the casing 10 far away from the first shroud 51, the second support bearing 37 is installed at one end of the second shroud 47, the second magnetic levitation bearing 58 and the second radial sensor 59 are both installed in the second shroud 47, and the second radial sensor 59 is disposed corresponding to the second magnetic ring 35; the rotating shaft 31 is penetrated by a second magnetic bearing 58; the heat sink 42 is mounted to an end of the second shroud 57 remote from the cabinet 10. Further, the second cover 57 is provided with a plurality of through holes 570, each through hole 570 being provided along a peripheral edge of the second cover 57, one end of the through hole 570 being communicated with the casing 10, and the other end being communicated with the heat dissipation cover 42. In one embodiment, the second shield 47 includes a first mounting portion 571 and a second mounting portion 572 connected in sequence, and the second magnetic bearing 58 is mounted on the first mounting portion 571; the second radial sensor 59 is mounted to the second mounting portion 572, and the second radial sensor 59 corresponds to the first magnetic portion 351. Further, the magnetic levitation assembly 50 further includes a speed sensor 59a, the speed sensor 59a being disposed at one side of the second radial sensor 59; alternatively, the speed sensor 59a is mounted to the second mounting part 572; the speed sensor 59a corresponds to the second magnetic portion 352, and the speed sensor 59a detects the rotation speed of the rotating shaft 31 by detecting the notch of the second magnetic portion 352. The magnetic levitation assembly 50 further includes a second protective housing (not shown) mounted to the second mounting portion 572, to which both the velocity sensor 59a and the second radial sensor 59 are mounted.
As shown in fig. 1 and 2, the magnetic suspension centrifugal compressor 100 with high heat dissipation further includes two volutes 60, one volute 60 is installed at one end of the first shield 51 far away from the casing 10, and the other volute 60 is installed at one end of the heat dissipation cover 42 far away from the casing 10; the spiral case 60 corresponds to the impeller 33 one by one, and the spiral case 60 covers the impeller 33. Optionally, the spiral case 60 is provided with an air suction port 61 and an air discharge port 62, and further, the air discharge ports 62 of the two spiral cases 60 are reversely arranged to ensure the overall balance.
When in use, the stator 20 is electrified to drive the rotating shaft 31 to rotate, the rotating shaft 31 drives the impeller 33 and the heat dissipation fan 41 to synchronously rotate, and under the action of the impeller 33, air is introduced from the air suction inlet 61 of the volute 60, compressed and then discharged from the air discharge outlet 62 of the volute 60; meanwhile, under the action of the heat dissipation fan 41, external air flows through the air inlet 11, the heat dissipation groove 433, the air channel 310, the through hole 570 and the air outlet 420 in sequence, so that heat generated in the use process of the stator 20, the rotating shaft 31 and the thrust disc 32 is taken away, and the heat of the fin portion 432 is conducted to the casing 10 for heat dissipation through the partition plate portion 434 and the support portion 435, so that heat dissipation is quickened. The end of the stator 20 close to the thrust disc 32 is arranged in a horn shape, so that air flows are convenient to converge and enter the ventilating duct 310, and the end of the stator 20 close to the heat radiating fan 41 is arranged in a horn shape, so that the air flows are convenient to diffuse from the ventilating duct 310 to the through holes 570.
By installing the thrust disk 32, the first magnetic ring 34, the first thrust bearing 52, the second thrust bearing 53, the first magnetic bearing 54, the axial sensor 55, and the first radial sensor 56 in the first shield 51, the distance between the thrust disk 32 and the sensor is reduced, and the control accuracy is improved. The reliability of the rotating shaft 31 is improved through the first magnetic bearing 54 and the second magnetic bearing 58, the axial positions of the first magnetic ring 34 are detected through the two axial sensors 55, the radial positions of the first magnetic ring 34 are detected through the first radial sensor 56, the radial positions of the second magnetic ring 35 are detected through the second radial sensor 59, the induction precision is improved, the thrust disc 32 is ensured to move between the first thrust bearing 52 and the second thrust bearing 53, and the rotating shaft 31 is prevented from being offset to cause scraping damage of the impeller 33.
The magnetic suspension centrifugal compressor 100 with high heat dissipation makes the rotating shaft 31 shorten by installing the thrust disc 32 on the shoulder of the rotating shaft 31, thereby improving the rotating speed; through the rotation of the heat dissipation fan 41, external air flows sequentially through the air inlet 11, the air duct 310 and the air outlet 420, so that heat generated in the use process of the stator 20, the rotating shaft 31 and the thrust disc 32 is taken away, and the heat dissipation efficiency is improved; the magnetic suspension centrifugal compressor 100 with high-efficiency heat dissipation is compact in structure and convenient to use.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. The magnetic suspension centrifugal compressor is characterized by comprising a shell, a stator, a rotor assembly, a heat dissipation assembly and a magnetic suspension assembly, wherein the shell is provided with a plurality of air inlet holes, and the stator is arranged in the shell; the rotor assembly comprises a rotating shaft, a thrust disc and two impellers, the rotating shaft is rotationally connected with the casing, the rotating shaft penetrates through the stator, an air channel is formed between the rotating shaft and the stator, the thrust disc is arranged on the shoulder of the rotating shaft, and the two impellers are respectively arranged at two ends of the rotating shaft; the heat dissipation assembly comprises a heat dissipation fan and a heat dissipation cover, the heat dissipation fan is arranged at one end of the rotating shaft far away from the thrust disc, the heat dissipation cover is arranged at one end of the casing, the heat dissipation cover is communicated with the casing, the heat dissipation fan is arranged on the heat dissipation cover, the heat dissipation cover is provided with an air outlet, and the air inlet, the air channel and the air outlet form a heat dissipation channel; the rotating shaft penetrates through the magnetic suspension assembly.
2. The high-efficiency heat-dissipating magnetic levitation centrifugal compressor of claim 1, wherein the heat-dissipating assembly further comprises a heat-conducting member, the heat-conducting member being sleeved on the stator; one end of the heat conducting piece is abutted against the stator, and the other end is abutted against the shell.
3. The high-efficiency heat dissipation magnetic levitation centrifugal compressor according to claim 2, wherein the heat conduction member comprises a base portion, a fin portion, a partition plate portion and a supporting portion, the base portion is abutted against the outer side of the stator, the fin portion is plural, each fin portion is arranged at intervals along the circumferential direction of the base portion, and a gap exists between the fin portion and the inner side of the casing; a heat dissipation groove is formed between two adjacent fin parts, and the heat dissipation groove is communicated with the air inlet; one end of the partition plate part is abutted against one end of the base part, the other end of the partition plate part is abutted against the inner side of the shell, and the partition plate part seals one end of the heat dissipation groove close to the air outlet; one end of the supporting part is connected with the top of the fin part, and the other end of the supporting part is abutted against the inner side of the shell.
4. The high efficiency heat dissipating magnetic levitation centrifugal compressor of claim 1, wherein the rotor assembly further comprises a first magnetic ring mounted to one end of the shaft, the first magnetic ring disposed on one side of the thrust disc; the magnetic suspension assembly further comprises a first shield, a first thrust bearing, a second thrust bearing, a first magnetic suspension bearing, an axial sensor and a first radial sensor, wherein the first shield is installed at one end of the shell, the first thrust bearing and the second thrust bearing are respectively arranged at two sides of the thrust disc, the first thrust bearing, the second thrust bearing, the first magnetic suspension bearing, the axial sensor and the first radial sensor are all installed in the first shield, the axial sensor and the first radial sensor are axially arranged along the rotating shaft, and the axial sensor and the first radial sensor are all corresponding to the first magnetic ring.
5. The high efficiency heat dissipating magnetic levitation centrifugal compressor of claim 4, further comprising two volutes, one volute mounted at an end of the first shroud remote from the housing and the other volute mounted at an end of the heat dissipating shroud remote from the housing; the spiral cases are in one-to-one correspondence with the impellers, and the spiral cases cover the impellers.
6. The high efficiency heat dissipating magnetic levitation centrifugal compressor of claim 4, wherein the first shroud comprises a first fixed portion, a second fixed portion, a third fixed portion, and a fourth fixed portion connected in sequence, the first thrust bearing is mounted to the first fixed portion, the second thrust bearing is mounted to the second fixed portion, the first magnetic bearing is mounted to the third fixed portion, and the axial sensor and the first radial sensor are mounted to the fourth fixed portion.
7. The high-efficiency heat dissipation magnetic suspension centrifugal compressor according to claim 4, wherein the first magnetic ring comprises a first magnet, a second magnet and a third magnet which are sequentially connected, two axial sensors are provided, one axial sensor is used for corresponding to the connection position of the first magnet and the second magnet, the other axial sensor is used for corresponding to the connection position of the third magnet and the second magnet, and the first radial sensor corresponds to the second magnet.
8. The high efficiency heat dissipating magnetic levitation centrifugal compressor of claim 4, wherein the rotor assembly further comprises a second magnetic ring sleeved at an end of the shaft away from the first magnetic ring; the magnetic suspension assembly further comprises a second shield, a second magnetic suspension bearing, a second radial sensor and a speed sensor, wherein the second shield is arranged at one end of the shell far away from the first shield, the second magnetic suspension bearing and the second radial sensor are both arranged in the second shield, and the second radial sensor is arranged corresponding to the second magnetic ring; the speed sensor is arranged on one side of the second radial sensor.
9. The high efficiency heat dissipating magnetic levitation centrifugal compressor of claim 8, wherein the second magnetic ring comprises a first magnetic portion and a second magnetic portion connected to one side of the first magnetic portion, the second magnetic portion is provided with a notch, the second radial sensor corresponds to the first magnetic portion, and the speed sensor corresponds to the second magnetic portion.
10. The efficient heat dissipation magnetic levitation centrifugal compressor as defined in claim 1, wherein both ends of the stator are provided in a horn shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311083676.7A CN117108526A (en) | 2023-08-25 | 2023-08-25 | Magnetic suspension centrifugal compressor with efficient heat dissipation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311083676.7A CN117108526A (en) | 2023-08-25 | 2023-08-25 | Magnetic suspension centrifugal compressor with efficient heat dissipation |
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| CN117108526A true CN117108526A (en) | 2023-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311083676.7A Pending CN117108526A (en) | 2023-08-25 | 2023-08-25 | Magnetic suspension centrifugal compressor with efficient heat dissipation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118066129A (en) * | 2024-04-17 | 2024-05-24 | 萨震压缩机（上海）有限公司 | High-speed double-impeller air centrifugal compressor |
-
2023
- 2023-08-25 CN CN202311083676.7A patent/CN117108526A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118066129A (en) * | 2024-04-17 | 2024-05-24 | 萨震压缩机（上海）有限公司 | High-speed double-impeller air centrifugal compressor |
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