Air compressor assembly and air conditioner

Abstract

The utility model discloses an air compressor assembly and an air conditioner, and the air compressor assembly comprises a shell, an air inlet, an air outlet, an air inlet and an air outlet, at least part of the impeller is rotatably arranged in the compression cavity; the supporting bearing is arranged on the shell and used for supporting the impeller to rotate relative to the shell, and the supporting bearing is a magnetic suspension bearing; and the cooling device is arranged in the shell and attached to the supporting bearing so as to be used for conducting heat dissipation on the supporting bearing. According to the air compressor assembly, the cooling efficiency of the supporting bearing is higher, and arrangement of the cooling device is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, in particular to an air compressor assembly and an air conditioner. Background Art

[0002] In the related technologies, magnetic levitation centrifugal air compressors have obvious advantages over traditional centrifugal air compressors in terms of oil-free and high efficiency. During the operation of the magnetic levitation centrifugal air compressor, the magnetic levitation bearings will generate a certain amount of heat. Controlling the heat generated by the magnetic levitation bearings and quickly dissipating the heat has become a pain point in the current industry. The current general solution in the industry is to use an external cooling fan to cool the air compressor, but the design of the heat dissipation duct is relatively complex and has high requirements for the fan outlet pressure. Therefore, how to optimize the bearing heat dissipation method and improve the heat dissipation efficiency has become a problem that needs to be solved urgently in this field. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide an air compressor assembly. The air compressor assembly of the present application has higher cooling efficiency for the support bearing and more convenient arrangement of the cooling device.

[0004] The utility model also provides an air conditioner having the air compressor assembly.

[0005] According to the utility model, the air compressor assembly includes: a shell, a compression chamber is formed inside the shell; an impeller, at least part of which is rotatably arranged in the compression chamber; a support bearing, the support bearing is arranged in the shell and is used to support the impeller to rotate relative to the shell, and the support bearing is constructed as a magnetic levitation bearing; a cooling device, the cooling device is arranged in the shell and is in contact with the support bearing to dissipate heat from the support bearing.

[0006] According to the air compressor assembly of the present invention, the support bearing is constructed as a magnetic levitation bearing, and the impeller rotates in coordination with the support bearing to compress the air. The support bearing adopts magnetic levitation technology, and the magnetic levitation bearing supports the rotation of the impeller through magnetic force, thereby reducing noise and vibration, and making the air compressor run more smoothly and reliably. A cooling device is provided in the outer casing, and the cooling device fits tightly with the support bearing, which not only improves the heat dissipation efficiency, but also optimizes the overall structure of the air compressor assembly, making the structure more compact and efficient.

[0007] According to some embodiments of the present invention, a cooling water channel for circulating a heat dissipation medium is formed inside the cooling device.

[0008] According to some embodiments of the present invention, at least a portion of the cooling device is disposed around the outer periphery of the support bearing, and the cooling water channel is constructed as a plurality of annular water channels coaxially disposed with the support bearing.

[0009] According to some embodiments of the present invention, the plurality of cooling water channels are radially nested with each other.

[0010] According to some embodiments of the present invention, the cooling device includes: a shell, which is sleeved on the outer periphery of the support bearing; a first cooling pipe, which is accommodated in the shell, and a first annular water channel is formed inside the first cooling pipe; a second cooling pipe, which is accommodated in the shell and located outside the first cooling pipe path, and a second annular water channel is formed inside the second cooling pipe; wherein, the first cooling pipe and the second cooling pipe are connected in series with each other and connected to the outside, or the first cooling pipe and the second cooling pipe are connected in parallel with each other and respectively connected to the outside.

[0011] According to some embodiments of the present invention, the diameter of the first cooling pipeline is larger than the diameter of the second cooling pipeline.

[0012] According to some embodiments of the present invention, the housing includes: a shell body, a receiving cavity for accommodating the support bearing and the cooling device is formed inside the shell body; a machine cover, the machine cover is arranged at the end of the shell body and the compression cavity is formed inside the machine cover; a diffuser, the diffuser is connected to the shell body and at least part of the diffuser is located on the side of the impeller facing the cooling device.

[0013] According to some embodiments of the present invention, the impeller includes: an impeller body, which is arranged in the receiving cavity; a rotating shaft, one end of the rotating shaft is engaged with the impeller body, and the other end of the rotating shaft is engaged with the support bearing; wherein, the diffuser is sleeved on the outer periphery of the rotating shaft; the air compressor assembly also includes: a sealing assembly, which is sleeved on the outer periphery of the rotating shaft, the outer edge of the sealing assembly is connected to the diffuser, and the inner edge of the sealing assembly is connected to the casing body.

[0014] According to some embodiments of the present invention, the air compressor assembly further includes: a thrust coil, which is arranged on a side of the support bearing away from the cooling device, and the thrust coil is suitable for generating a magnetic field that axially supports the support bearing.

[0015] The following briefly describes an air conditioner according to another embodiment of the present invention.

[0016] The air conditioner according to the present invention has the air compressor assembly described in any one of the above embodiments. Since the air conditioner according to the present invention has the air compressor assembly described in any one of the above embodiments, the heat dissipation performance of the air compressor assembly is better and the air conditioner is safer.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is an overall structural diagram of an air compressor assembly according to some embodiments of the present utility model;

[0020] Figure 2 yes Figure 1 AA cross-section diagram in.

[0021] Reference numerals:

[0022] Air compressor assembly 1;

[0023] Housing 11, cover 111; impeller 12; support bearing 13;

[0024] Cooling device 14, first cooling pipeline 141, second cooling pipeline 142;

[0025] Diffuser 15; sealing assembly 16; thrust coil 17. DETAILED DESCRIPTION

[0026] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0027] In the related technologies, magnetic levitation centrifugal air compressors have obvious advantages over traditional centrifugal air compressors in terms of oil-free and high efficiency. During the operation of the magnetic levitation centrifugal air compressor, the magnetic levitation bearings will generate a certain amount of heat. Controlling the heat generated by the magnetic levitation bearings and quickly dissipating the heat has become a pain point in the current industry. The current general solution in the industry is to use an external cooling fan to cool the air compressor, but the design of the heat dissipation duct is relatively complex and has high requirements for the fan outlet pressure. Therefore, how to optimize the bearing heat dissipation method and improve the heat dissipation efficiency has become a problem that needs to be solved urgently in this field.

[0028] Reference below Figure 1-Figure 2 An air compressor assembly according to an embodiment of the present invention is described.

[0029] According to the utility model, the air compressor assembly 1 includes: a housing 11, a compression chamber is formed inside the housing 11; an impeller 12, at least a portion of the impeller 12 is rotatably arranged in the compression chamber; a support bearing 13, the support bearing 13 is arranged in the housing 11 and is used to support the impeller 12 to rotate relative to the housing 11, and the support bearing 13 is constructed as a magnetic levitation bearing; a cooling device 14, the cooling device 14 is arranged in the housing 11 and is in contact with the support bearing 13 to dissipate heat from the support bearing 13.

[0030] Specifically, a compression chamber is formed inside the housing 11, and at least a portion of the impeller 12 is rotatably disposed in the compression chamber. The impeller 12 inhales and compresses gas by rotating. The support bearing 13 adopts magnetic levitation technology. The magnetic levitation bearing supports the rotation of the impeller 12 by magnetic force, thereby reducing noise and vibration, making the air compressor run more smoothly and reliably, and avoiding the contamination of the gas by lubricating oil. The cooling device 14 fits tightly with the support bearing 13, ensuring that the support bearing 13 can obtain timely and effective heat dissipation when running at high speed, thereby extending the service life of the air compressor assembly 1. The cooling device 14 fits tightly with the support bearing 13, which not only improves the heat dissipation efficiency, but also optimizes the overall structure of the air compressor assembly 1, making the structure more compact and efficient. Among them, the cooling device 14 can adopt water cooling to dissipate heat. Compared with the air cooling heat dissipation in the prior art, the water channel processing and arrangement of the cooling device 14 are simpler and more convenient. The support bearing 13 is cooled by connecting to the external circulating water, and the heat dissipation efficiency is higher.

[0031] According to the air compressor assembly 1 of the present invention, the support bearing 13 is constructed as a magnetic levitation bearing. The impeller 12 rotates in coordination with the support bearing 13 to compress the air. The support bearing 13 adopts magnetic levitation technology. The magnetic levitation bearing supports the rotation of the impeller 12 through magnetic force, reducing noise and vibration, making the air compressor run more smoothly and reliably. A cooling device 14 is provided in the outer casing 11. The cooling device 14 fits tightly with the support bearing 13, which not only improves the heat dissipation efficiency, but also optimizes the overall structure of the air compressor assembly 1, making the structure more compact and efficient.

[0032] According to some embodiments of the present invention, a cooling water channel for circulating the heat dissipation medium is formed inside the cooling device 14 .

[0033] Specifically, a cooling water channel is formed inside the cooling device 14, and the heat generated by the support bearing 13 is removed by circulating water in the cooling water channel. By fitting the cooling device 14 to the support bearing 13, the heat dissipation area of ​​the heat dissipation medium in the cooling water channel can be effectively increased, thereby improving the efficiency of heat transfer, helping to quickly remove the heat generated by the support bearing 13, preventing the support bearing 13 from overheating, and ensuring the stable operation of the air compressor assembly 1. By adjusting the flow rate and flow rate of the cooling medium, the heat dissipation efficiency of the cooling device 14 for the support bearing 13 can be further improved, so that it can be kept within the optimal performance range. Compared with the air-cooled heat dissipation in the prior art, the layout of the cooling device 14 is more convenient, and the processing and forming of the cooling water channel is simpler than the processing of the cooling air duct, which is conducive to reducing processing costs.

[0034] According to some embodiments of the present invention, at least a portion of the cooling device 14 is disposed around the outer periphery of the support bearing 13 , and the cooling water channel is constructed as a plurality of annular water channels coaxially disposed with the support bearing 13 .

[0035] Specifically, at least a portion of cooling device 14 surrounds the outer periphery of support bearing 13 and is in contact with the wall surface of support bearing 13. The cooling water channel is constructed as an annular channel and is coaxially arranged with support bearing 13. This increases the cooling water channel's heat dissipation area, allowing cooling device 14 to dissipate heat from support bearing 13 more directly and effectively, ensuring that the bearing maintains a low operating temperature during high-speed operation. The multiple annular water channels evenly distribute the heat dissipation medium around the bearing, helping to maintain bearing temperature uniformity and reducing the risk of performance degradation or damage due to local overheating. This makes cooling device 14 more compact, which helps reduce the overall volume and weight of air compressor assembly 1 and improves space utilization.

[0036] According to some embodiments of the present invention, a plurality of cooling water channels are radially nested with each other.

[0037] Specifically, radially nesting multiple cooling channels allows for more efficient use of limited space, increasing the flow path and heat dissipation area of ​​the heat dissipation medium, thereby improving heat dissipation efficiency. Since the cooling medium flows through multiple cooling channels, it can circulate through the heat-generating area of ​​the support bearing 13, increasing the frequency and efficiency of heat exchange and helping to more thoroughly remove heat generated by the bearing. The radial nesting of multiple cooling channels also helps to create a more uniform temperature gradient within the cooling device 14, making heat dissipation more uniform and effective, and avoiding uneven temperature distribution within the support bearing 13 that could affect operating efficiency.

[0038] According to some embodiments of the present invention, the cooling device 14 includes: a shell, which is sleeved on the outer periphery of the support bearing 13; a first cooling pipe 141, which is accommodated in the shell, and a first annular water channel is formed inside the first cooling pipe 141; a second cooling pipe 142, which is accommodated in the shell and is located radially outside the first cooling pipe 141, and a second annular water channel is formed inside the second cooling pipe 142; wherein, the first cooling pipe 141 and the second cooling pipe 142 are connected in series with each other and communicated with the outside, or the first cooling pipe 141 and the second cooling pipe 142 are connected in parallel with each other and respectively communicated with the outside.

[0039] Specifically, a shell is provided on the outside of the cooling device 14, and the shell is sleeved on the outer periphery of the support bearing 13. The shell not only provides protection and support for the internal cooling pipeline, but also forms a closed space, which is conducive to the centralized treatment and conduction of heat. Inside the shell, a first cooling pipeline 141 is provided. A first annular water channel is formed inside the first cooling pipeline 141 for circulating the heat dissipation medium. The first annular water channel enables the heat dissipation medium to circulate around the peripheral wall of the support bearing 13, thereby effectively absorbing and taking away heat. A second cooling pipeline 142 is also provided inside the shell. The second cooling pipeline 142 is located radially outside the first cooling pipeline 141. A second annular water channel is formed inside the second cooling pipeline 142. The second cooling pipeline 142 cooperates with the first cooling pipeline 141 to dissipate heat to the support bearing 13 at the same time, thereby increasing the heat dissipation area of ​​the cooling device 14 and improving the heat dissipation efficiency. The first cooling pipeline 141 and the second cooling pipeline 142 can be connected in series with each other and communicate with the outside. The heat dissipation medium first exchanges heat through the first annular water channel of the first cooling pipeline 141, then flows into the second annular water channel of the second cooling pipeline 142 for further heat exchange, and finally is discharged to the outside. This series connection method is conducive to forming a continuous heat exchange process and improving heat dissipation efficiency. The first cooling pipeline 141 and the second cooling pipeline 142 can also be connected in parallel with each other and communicate with the outside respectively. The heat dissipation medium can exchange heat through the two cooling pipelines at the same time, increasing the flexibility and redundancy of heat dissipation. If one of the first cooling pipeline 141 and the second cooling pipeline 142 fails or is blocked, the other pipeline can still operate normally, ensuring the heat dissipation effect and ensuring the continuous and stable operation of the air compressor assembly 1.

[0040] According to some embodiments of the present invention, the diameter of the first cooling pipeline 141 is greater than the diameter of the second cooling pipeline 142 .

[0041] Specifically, due to the larger diameter of first cooling line 141, more heat dissipation medium can be accommodated and circulated in first cooling line 141. The heat dissipation medium encounters less resistance when flowing in first cooling line 141, which helps improve overall heat dissipation efficiency. Since more heat is generated at the center of support bearing 13, first cooling line 141 can be located near the center of support bearing 13, which helps achieve more effective heat transfer. The diameter of second cooling line 142 is smaller than that of first cooling line 141. Second cooling line 142 is radially sleeved on the radial outer periphery of first cooling line 141. The support bearing 13 is cooled by second cooling line 142 and second cooling line 142 together, thereby increasing the heat dissipation area and improving heat dissipation efficiency.

[0042] According to some embodiments of the present invention, the housing 11 includes: a shell body, a receiving cavity for accommodating a support bearing 13 and a cooling device 14 is formed inside the shell body; a machine cover 111, the machine cover 111 is arranged at the end of the shell body and a compression cavity is formed inside the machine cover 111; the diffuser 15, the diffuser 15 is connected to the shell body and at least a portion of the diffuser 15 is located on the side of the impeller 12 facing the cooling device 14.

[0043] Specifically, a receiving cavity is formed within the housing body, providing installation space for the support bearing 13 and the cooling device 14, ensuring a tight fit between the support bearing 13 and the cooling device 14 and improving the heat dissipation effect of the cooling device 14 on the support bearing 13. A cover 111 is disposed at the end of the housing body, forming a compression chamber within the cover 111. The impeller 12 rotates at high speed within the compression chamber to produce a compression effect. A diffuser 15 is connected to the housing body, with at least a portion of the diffuser 15 located on the side of the impeller 12 facing the cooling device 14. The diffuser 15 is adapted to diffuse the high-speed airflow at the outlet of the impeller 12, thereby improving the compression efficiency of the air compressor assembly 1 and reducing energy loss during the flow of the airflow. Furthermore, the cooling device 14 can simultaneously dissipate heat from the support bearing 13 and the diffuser 15, effectively reducing the temperature of the diffuser 15 while cooling the support bearing 13, thereby improving the operating efficiency of the air compressor assembly 1.

[0044] According to some embodiments of the present invention, the impeller 12 includes: an impeller 12 body, the impeller 12 body is arranged in the receiving cavity; a rotating shaft, one end of the rotating shaft is engaged with the impeller 12 body, and the other end of the rotating shaft is engaged with the support bearing 13; wherein, the diffuser 15 is sleeved on the outer periphery of the rotating shaft; the air compressor assembly 1 also includes: a sealing assembly 16, the sealing assembly 16 is sleeved on the outer periphery of the rotating shaft, the outer edge of the sealing assembly 16 is connected to the diffuser 15, and the inner edge of the sealing assembly 16 is connected to the casing body.

[0045] Specifically, the impeller 12 body is arranged in the receiving chamber. When the rotating shaft drives the impeller 12 body to rotate, the impeller 12 can inhale and compress the gas. One end of the rotating shaft is connected to the impeller 12 body, and the other end cooperates with the support bearing 13 to achieve stable rotation of the impeller 12. The diffuser 15 is sleeved on the outer periphery of the rotating shaft, so that the diffuser 15 can be arranged tightly around the rotating shaft, thereby more effectively collecting and processing the high-speed airflow discharged from the impeller 12 body, helping to reduce the energy loss of the airflow during the flow process and improve the compression efficiency of the air compressor. The sealing component 16 is sleeved on the outer periphery of the rotating shaft to play a sealing and leak-proof role. The outer edge of the sealing component 16 is connected to the diffuser 15, and the inner edge of the sealing component 16 is connected to the shell body, forming a complete sealing structure, which ensures that the gas will not leak out from the gap between the rotating shaft and the shell during the compression process, thereby ensuring the normal operation and high efficiency of the air compressor assembly 1. According to the air compressor assembly 1 of the present invention, the tight fit between the impeller 12 body, the rotating shaft and the sealing assembly 16 ensures the stable rotation and efficient compression of the impeller 12, thereby improving the overall sealing and operational reliability of the air compressor assembly 1.

[0046] According to some embodiments of the present invention, the air compressor assembly 1 further includes a thrust coil 17 , which is disposed on a side of the support bearing 13 facing away from the cooling device 14 , and is adapted to generate a magnetic field to axially support the support bearing 13 .

[0047] Specifically, the thrust coil 17 is arranged on the side of the support bearing 13 away from the cooling device 14. The main function of the thrust coil 17 is to generate a magnetic field to axially support the support bearing 13. By axially supporting the support bearing 13, it helps to maintain the stable position of the support bearing 13, prevents the support bearing 13 from shifting or shaking when rotating at high speed or being acted upon by external force, helps to reduce vibration and noise caused by unstable support of the support bearing 13, and improves the operating smoothness and reliability of the air compressor assembly 1.

[0048] The air conditioner according to the present invention is briefly described below.

[0049] The air conditioner according to the present invention has the air compressor assembly 1 described in any one of the above embodiments. Since the air conditioner according to the present invention has the air compressor assembly 1 described in any one of the above embodiments, the heat dissipation performance of the air compressor assembly 1 is better and the air conditioner is safer.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0051] In the description of the present invention, "first feature" and "second feature" may include one or more such features.

[0052] In the description of the present invention, “plurality” means two or more.

[0053] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact via another feature therebetween.

[0054] In the description of the present invention, a first feature “above”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0055] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0056] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An air compressor assembly, characterized in that: include: a housing, wherein a compression chamber is formed inside the housing; an impeller, at least a portion of which is rotatably disposed within the compression chamber; a support bearing, the support bearing being disposed on the housing and used to support the impeller to rotate relative to the housing, the support bearing being constructed as a magnetic bearing; A cooling device is provided in the housing and is in contact with the support bearing to dissipate heat from the support bearing.

2. The air compressor assembly according to claim 1, characterized in that A cooling water channel for circulating a heat dissipation medium is formed inside the cooling device.

3. The air compressor assembly according to claim 2, characterized in that: At least a portion of the cooling device is disposed around the outer periphery of the support bearing, and the cooling water channel is constructed as a plurality of annular water channels coaxially disposed with the support bearing.

4. The air compressor assembly according to claim 3, characterized in that The plurality of cooling water channels are nested with each other in the radial direction.

5. The air compressor assembly according to claim 1, characterized in that: The cooling device comprises: a housing, said housing being sleeved on the outer periphery of said support bearing; a first cooling pipeline, the first cooling pipeline being accommodated in the housing, and a first annular water channel being formed inside the first cooling pipeline; The second cooling pipe is housed in the shell and is located outside the first cooling pipe path, and a second annular water channel is formed inside the second cooling pipe; The first cooling pipeline and the second cooling pipeline are connected in series with each other and communicate with the outside, or the first cooling pipeline and the second cooling pipeline are connected in parallel with each other and communicate with the outside respectively.

6. The air compressor assembly according to claim 5, characterized in that The diameter of the first cooling pipeline is larger than the diameter of the second cooling pipeline.

7. The air compressor assembly according to claim 1, characterized in that The housing comprises: A housing body, wherein a receiving cavity is formed inside the housing body for receiving the support bearing and the cooling device; a machine cover, the machine cover being arranged at an end portion of the shell body and forming the compression chamber inside the machine cover; A diffuser is connected to the casing body and at least a portion of the diffuser is located on a side of the impeller facing the cooling device.

8. The air compressor assembly according to claim 7, characterized in that: The impeller comprises: an impeller body, the impeller body being disposed in the receiving cavity; a rotating shaft, one end of the rotating shaft being engaged with the impeller body, and the other end of the rotating shaft being engaged with the support bearing; wherein the diffuser is sleeved on the outer periphery of the rotating shaft; The air compressor assembly further includes a sealing assembly, which is sleeved on the outer circumference of the rotating shaft, an outer edge of the sealing assembly is connected to the diffuser, and an inner edge of the sealing assembly is connected to the casing body.

9. The air compressor assembly according to claim 1, characterized in that Also includes: A thrust coil is provided on a side of the support bearing facing away from the cooling device, and the thrust coil is adapted to generate a magnetic field for axially supporting the support bearing.

10. An air conditioner, characterized in that: The invention comprises the air compressor assembly according to any one of claims 1 to 9.

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