Fully-closed partitioned cooling magnetic suspension compressor
By adopting a fully enclosed zoned cooling structure in the magnetic levitation compressor, and using water-cooling channels to partition the bearings and motors left and right, the problems of high noise and low energy efficiency of the traditional air-cooling method are solved, rapid cooling and partitioned heat dissipation are achieved, and the energy efficiency of the compressor is improved.
Patent Information
- Application Number
- CN202421643595.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-07-12
AI Technical Summary
Traditional magnetic levitation compressors use air-cooling to make the bearings cool and cause high noise, affecting the health of staff. Moreover, due to the constant sealing of the impeller, hot air is discharged through the heat dissipation hole, affecting the energy efficiency of the main machine.
Using a fully enclosed partition cooling structure, the water cooling channel formed between the first and second cooling shells, the bearing seat and the motor housing are cooled, and the passage is divided into two independent water cooling channel units on the left and right, so as to realize the left and right partition water cooling of the bearing and the motor.
It realizes rapid cooling and partition heat dissipation of bearings and motors, reduces noise, improves the energy efficiency of the compressor, and reduces the leakage of heat from the impeller.
Smart Images
Figure CN223039818U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of compressors, in particular to a fully enclosed and partitioned-cooling magnetic levitation compressor. Background Art
[0002] A magnetic levitation compressor is a compressor that uses magnetic levitation technology to reduce mechanical friction. The traditional magnetic levitation compressor uses an air-cooling method to cool the bearings, that is, a cooling fan is used for cooling. However, the cooling fan generates a large amount of noise during operation, which may affect the physical health of the staff. At the same time, heat dissipation holes are also provided on the motor housing, so that the operating noise inside the compressor leaks out through the heat dissipation holes. Moreover, since the seal of the impeller is not absolute, a small part of the hot air will enter the bearing and the motor cavity through the shaft end of the motor during operation, and is discharged by the air-cooling cooling fan of the bearing and the motor through the heat dissipation holes, thus affecting the energy efficiency of the main unit. Content of the Utility Model
[0003] In order to overcome the defects existing in the prior art, the present utility model provides a fully enclosed and partitioned-cooling magnetic levitation compressor, which can solve the problems of large noise and affecting the energy efficiency of the main unit in the existing air-cooled bearing method.
[0004] To achieve the above technical effects, the solution provided by the present utility model is to provide a fully enclosed and partitioned-cooling magnetic levitation compressor, which includes:
[0005] A motor housing, a stator is fixed inside the motor housing, a rotor is disposed through the stator, both ends of the rotor are supported in the motor housing by magnetic levitation bearings, and bearing seats are connected to both ends of the motor housing. The magnetic levitation bearings are installed in the bearing seats, a volute is connected to the bearing seats, an impeller is disposed in the volute, and the impeller is installed at both ends of the rotor;
[0006] A cooling structure, including a first cooling housing surrounding the outside of the bearing seat and a second cooling housing surrounding the outside of the motor housing. A first water-cooling channel is formed between the inner wall of the first cooling housing and the outer wall of the bearing seat, and a second water-cooling channel is formed between the inner wall of the second cooling housing and the outer wall of the motor housing. First partition members for dividing the first water-cooling channel into a pair of first water-cooling channel units are provided on both the top surface and the bottom surface of the first water-cooling channel, and second partition members for dividing the second water-cooling channel into a pair of second water-cooling channel units are provided on both the top surface and the bottom surface of the second water-cooling channel. Each first water-cooling channel unit is communicated with a first water inlet and a first water outlet, and both the first water inlet and the first water outlet are provided on the first cooling housing. Each second water-cooling channel unit is communicated with a second water inlet and a second water outlet, and both the second water inlet and the second water outlet are provided on the second cooling housing.
[0007] Preferably, annular flow channels are formed on the outer walls of the bearing housing and the motor housing. The annular flow channels can increase the contact area between the cooling water and the bearing housing and the motor housing, and take away more heat in the same time.
[0008] Preferably, the first water inlet is arranged at the bottom of the first cooling housing, and the first water outlet is arranged at the top of the first cooling housing.
[0009] Preferably, the second water inlet is arranged at the bottom of the second cooling housing, and the second water outlet is arranged at the top of the second cooling housing.
[0010] Preferably, the first partition member is a first partition plate, which is arranged between the inner wall of the top of the first cooling housing and the outer wall of the top of the bearing housing, and between the inner wall of the bottom of the first cooling housing and the outer wall of the bottom of the bearing housing, and is arranged longitudinally along the width direction of the bearing housing.
[0011] Preferably, the second partition member is a second partition plate, which is arranged between the inner wall of the top of the second cooling housing and the outer wall of the top of the motor housing, and between the inner wall of the bottom of the second cooling housing and the outer wall of the bottom of the motor housing, and the second partition plate is arranged longitudinally along the length direction of the motor housing.
[0012] Preferably, the first cooling housing and the bearing housing are of an integrally formed structure.
[0013] Preferably, the second cooling housing and the motor housing are of an integrally formed structure.
[0014] The beneficial effects of the present utility model are as follows: for a fully enclosed and partitioned cooling magnetic levitation compressor of the present utility model, a first water cooling channel is formed between the inner wall of the first cooling housing and the outer wall of the bearing housing, and a second water cooling channel is formed between the inner wall of the second cooling housing and the outer wall of the motor housing. Moreover, both the first water cooling channel and the second water cooling channel are separated by partition members to form two independent left and right water cooling channel units, so as to perform water cooling on the left and right sides of the bearing and the motor respectively. At the same time, the length of the cooling channel can be reduced, the circulation speed of the cooling water can be increased, and the rapid cooling of the bearing and the motor can be realized. The water cooling structure of the present utility model is fully enclosed, and each water cooling channel unit is provided with independent water inlet and outlet, and can perform partitioned heat dissipation on the bearing and the motor at the same time. And the fully enclosed water cooling structure does not generate noise, can also reduce the internal operation noise of the compressor, and at the same time reduces the leakage of the gas generated by the impeller, and improves the energy efficiency of the compressor. Description of the Drawings
[0015] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.
[0016] Figure 1 It is a schematic cross-sectional view of the magnetic levitation compressor with fully enclosed partition cooling of the present utility model.
[0017] Figure 2 It is a schematic cross-sectional view of the connection between the first cooling housing and the front bearing housing of the magnetic levitation compressor with fully enclosed partition cooling of the present utility model.
[0018] The corresponding relationship of the reference numerals in the figure is as follows:
[0019] 1. Motor housing; 2. Stator; 3. Rotor; 4. Front magnetic levitation bearing; 5. Rear magnetic levitation bearing; 6. Annular flow channel; 7. Front bearing housing; 8. Rear bearing housing; 9. First volute; 10. Second volute; 11. First impeller; 12. Second impeller; 13. First cooling housing; 14. Second cooling housing; 15. First water cooling channel; 16. First partition plate; 17. First water inlet; 18. First water outlet; 19. Second water cooling channel. Detailed implementation manners
[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.
[0021] Please refer to Figures 1 to 2 As shown, the embodiments of the present utility model provide a magnetic levitation compressor with fully enclosed partition cooling, including a motor housing 1 and a cooling structure. Among them:
[0022] The motor housing 1, a stator 2 is fixed inside the motor housing 1, a rotor 3 is disposed through the stator 2, both ends of the rotor 3 are supported in the motor housing 1 by magnetic levitation bearings, and both ends of the motor housing 1 are connected with bearing housings. The magnetic levitation bearings are installed in the bearing housings, and a volute is connected to the bearing housings. An impeller is provided inside the volute, and the impeller is installed at both ends of the rotor 3;
[0023] The cooling structure includes a first cooling shell 13 arranged on the outside of the bearing seat and a second cooling shell 14 arranged on the outside of the motor housing 1, a first water-cooling channel 15 is formed between the inner wall of the first cooling shell 13 and the outer wall of the bearing seat, and a second water-cooling channel 19 is formed between the inner wall of the second cooling shell 14 and the outer wall of the motor housing 1. The top and bottom surfaces of the first water-cooling channel 15 are provided with a first partition for separating the first water-cooling channel 15 into a pair of first water-cooling channel units, and the top and bottom surfaces of the second water-cooling channel 19 are provided with a second partition for separating the second water-cooling channel 19 into a pair of second water-cooling channel units. Each first water-cooling channel unit is connected to a first water inlet 17 and a first water outlet 18, and the first water inlet 17 and the first water outlet 18 are both arranged on the first cooling shell 13, and each second water-cooling channel unit is connected to a second water inlet and a second water outlet, and the second water inlet and the second water outlet are both arranged on the second cooling shell 14.
[0024] Specifically, the front end of the motor housing 1 is connected to a front bearing seat 7, in which a front magnetic bearing 4 is installed and connected to a first volute 9, in which a first impeller 11 is installed, and the rear end of the motor housing 1 is connected to a rear bearing seat 8, in which a rear magnetic bearing 5 is installed and connected to a second volute 10, in which a second impeller 12 is installed, and the first impeller 11 and the second impeller 12 are installed at both ends of the rotor 3, respectively. Figure 1 As shown, the outer sides of the front bearing seat 7 and the rear bearing seat 8 are both surrounded by a first cooling shell 13. Figure 2 As shown, a first water cooling channel 15 is formed between the front end bearing seat 7 and the first cooling shell 13, and the top and bottom surfaces of the first water cooling channel 15 are provided with first partitions, and the first water cooling channel 15 is divided into a pair of first water cooling channel units for left and right partitions by the first partitions, and the left and right sides of the first cooling shell 13 are provided with a first water inlet 17 and a first water outlet 18, and the first water inlet 17 and the first water outlet 18 are connected to the first water cooling channel unit, so that the front magnetic suspension bearing 4 can be water cooled in left and right partitions. Similarly, the connection structure between the rear end bearing seat 8 and the first cooling shell 13, and the connection structure between the motor housing 1 and the second cooling shell 14 are consistent with the above structure, so that the rear magnetic suspension bearing 5 and the motor can be water cooled in left and right partitions.
[0025] As a preferred implementation, Figure 1 and 2 As shown, the outer wall of the bearing seat and the outer wall of the motor housing 1 are both formed with an annular flow channel 6, which can increase the contact area between water and the heat dissipation area, take away more heat in the same time, and improve the heat dissipation efficiency.
[0026] As a preferred implementation, Figure 2As shown in the figure, the first water inlet 17 is provided at the bottom of the first cooling housing 13, and the first water outlet 18 is provided at the top of the first cooling housing 13.
[0027] As a preferred embodiment, the second water inlet is provided at the bottom of the second cooling housing 14, and the second water outlet is provided at the top of the second cooling housing 14, so that the water flow flows along the water cooling channel from top to bottom.
[0028] As a preferred embodiment, as Figure 2 shown in the figure, the first partition member is the first partition plate 16. The first partition plate 16 is provided between the inner wall of the top of the first cooling housing 13 and the outer wall of the top of the bearing seat, and between the inner wall of the bottom of the first cooling housing 13 and the outer wall of the bottom of the bearing seat, and is arranged longitudinally along the width direction of the bearing seat.
[0029] As a preferred embodiment, the second partition member is the second partition plate. The second partition plate is provided between the inner wall of the top of the second cooling housing 14 and the outer wall of the top of the motor housing 1, and between the inner wall of the bottom of the second cooling housing 14 and the outer wall of the bottom of the motor housing 1, and the second partition plate is arranged longitudinally along the length direction of the motor housing 1. The water cooling channel is divided into a pair of non-communicating water cooling channel units on the left and right by the partition plate, and the two water cooling channel units form independent cooling areas.
[0030] As a preferred embodiment, the first cooling housing 13 and the bearing seat are of an integrally formed structure.
[0031] As a preferred embodiment, the second cooling housing 14 and the motor housing 1 are of an integrally formed structure.
[0032] For the fully enclosed partition-cooled magnetic levitation compressor of the present utility model, a first water cooling channel 15 is formed between the inner wall of the first cooling housing 13 and the outer wall of the bearing seat, and a second water cooling channel 19 is formed between the inner wall of the second cooling housing 14 and the outer wall of the motor housing 1. Both the first water cooling channel 15 and the second water cooling channel 19 are divided by partition plates to form two independent water cooling channel units on the left and right. The lower end of each water cooling channel unit is communicated with a water inlet, and the upper end of each water cooling channel unit is provided with a drain port. Thus, water can be respectively passed through each water cooling channel unit to cool the bearing and the motor separately on the left and right, reducing the length of the cooling channel, enabling the cooling water flowing through each heat generation area to quickly take away heat, realizing the rapid cooling and partition heat dissipation of the bearing and the motor, and at the same time ensuring that the temperature of the water inlet in each area is consistent, so that the bearing and the motor are cooled evenly.
[0033] Moreover, the first cooling housing 13 and the bearing housing, and the second cooling housing 14 and the motor housing 1 are all integrally formed structures, and no heat dissipation holes are provided on the motor housing 1, thus forming a fully enclosed cooling structure. On the one hand, it can reduce the operating noise inside the compressor, and on the other hand, it can reduce the leakage of the hot air generated by the impeller, improving the energy efficiency of the compressor.
[0034] For the maglev compressor with fully enclosed partition cooling of the present utility model, the cooling structure has high compactness and small volume. From the perspective of material cost, the material usage is reduced, saving costs, and thus the manufacturing cost is also reduced.
[0035] Parts not involved in the present utility model are the same as or can be implemented using the prior art. Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A fully enclosed zoned cooling magnetic suspension compressor, characterized in that: include: A motor casing, wherein a stator is fixed in the motor casing, a rotor is inserted in the stator, two ends of the rotor are supported in the motor casing by magnetic bearings, and two ends of the motor casing are connected to bearing seats, the magnetic bearings are installed in the bearing seats, a volute is connected to the bearing seat, an impeller is arranged in the volute, and the impeller is installed at two ends of the rotor; A cooling structure includes a first cooling shell arranged around the outside of the bearing seat and a second cooling shell arranged around the outside of the motor housing, a first water-cooling channel is formed between the inner wall of the first cooling shell and the outer wall of the bearing seat, a second water-cooling channel is formed between the inner wall of the second cooling shell and the outer wall of the motor housing, the top and bottom surfaces of the first water-cooling channel are both provided with a first partition for dividing the first water-cooling channel into a pair of first water-cooling channel units, the top and bottom surfaces of the second water-cooling channel are both provided with a second partition for dividing the second water-cooling channel into a pair of second water-cooling channel units, each of the first water-cooling channel units is connected with a first water inlet and a first water outlet, the first water inlet and the first water outlet are both provided on the first cooling shell, and each of the second water-cooling channel units is connected with a second water inlet and a second water outlet, the second water inlet and the second water outlet are both provided on the second cooling shell.
2. The fully enclosed zoned cooling magnetic suspension compressor according to claim 1, characterized in that: The outer wall of the bearing seat and the outer wall of the motor housing are both formed with an annular flow channel.
3. The fully enclosed zoned cooling magnetic suspension compressor according to claim 1, characterized in that: The first water inlet is arranged at the bottom of the first cooling shell, and the first water outlet is arranged at the top of the first cooling shell.
4. The fully enclosed zoned cooling magnetic suspension compressor according to claim 1, characterized in that: The second water inlet is arranged at the bottom of the second cooling shell, and the second water outlet is arranged at the top of the second cooling shell.
5. The fully enclosed zoned cooling magnetic suspension compressor according to claim 1, characterized in that: The first partition is a first partition plate, which is arranged between the top inner wall of the first cooling shell and the top outer wall of the bearing seat, and between the bottom inner wall of the first cooling shell and the bottom outer wall of the bearing seat, and is arranged along the width direction of the bearing seat.
6. The fully enclosed zoned cooling magnetic suspension compressor according to claim 1, characterized in that: The second partition is a second partition plate, which is arranged between the top inner wall of the second cooling shell and the top outer wall of the motor housing, and between the bottom inner wall of the second cooling shell and the bottom outer wall of the motor housing, and is arranged along the length direction of the motor housing.
7. The fully enclosed zoned cooling magnetic suspension compressor according to claim 1, characterized in that: The first cooling shell and the bearing seat are an integrally formed structure.
8. The fully enclosed zoned cooling magnetic suspension compressor according to claim 1, characterized in that: The second cooling shell and the motor housing are an integrally formed structure.