Integrated magnetic suspension compressor capable of being independently controlled

Abstract

The utility model relates to the related field of compressors, in particular to an integrated magnetic suspension compressor capable of being independently controlled. A first aviation plug connector and a controller are arranged on the outer side of the compressor, the controller comprises a control shell, a magnetic suspension bearing control piece, a support and a PLC control piece, and the control shell covers the outer surface of the first aviation plug connector; the magnetic suspension bearing control part is arranged in the control shell and fixed to the outer surface of the compressor, the support is arranged above the magnetic suspension bearing control part, and the PLC control part is arranged above the support. The control shell is provided with a second aviation plug connector communicated to the outside of the control shell, and the second aviation plug connector is connected with the suction end and the exhaust end of the compressor through the wire harness. The controller is integrally arranged on the compressor, so that the compressor is highly integrated and independently controlled at the same time.

Description

Technical Field

[0001] The utility model relates to the field of compressors, and in particular to an integrated independently controllable magnetic suspension compressor. Background Art

[0002] The magnetic levitation centrifugal water-cooling unit system is a high-efficiency, low-noise cooling device that has been widely used in many fields. The system includes a frequency converter, a compressor, a controller, and a unit. Its compressor uses magnetic levitation technology to apply electromagnetic force to control the position and speed of the impeller. When the motor starts, the magnetic bearing of the compressor will attract the impeller to form a centrifugal motion. At this time, the magnetic field in the air will generate friction, causing the impeller to rotate at a high speed, thereby achieving the cooling effect of the chiller.

[0003] Magnetic levitation centrifugal compressors are often used in refrigerators, air conditioners and other refrigeration and heating equipment. The magnetic levitation centrifugal compressor includes a magnetic levitation motor and a centrifugal compressor. The magnetic levitation motor mainly includes a casing, a stator arranged in the casing and fixedly connected to the casing, a rotor arranged in the stator, a radial magnetic bearing for supporting the rotation of the rotor, and an axial thrust bearing for maintaining the axial position of the rotor. The magnetic levitation motor also includes a protective bearing arranged in the casing, which is used to carry the stationary rotor to avoid contact between the rotor and the radial magnetic bearing, thereby protecting the radial magnetic bearing. When the magnetic levitation motor is working, the radial magnetic bearing is energized to separate the rotor from the protective bearing and suspend it.

[0004] At present, the compressor and controller of the unit system used are two separate devices, which require a long adjustment period in the overall debugging cycle, and the overall volume is large and difficult to arrange. Utility Model Content

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide an integrated independently controllable magnetic levitation compressor, by integrally arranging a controller on the compressor, so that the compressor is highly integrated and independently controlled.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] An integrated independently controllable magnetic levitation compressor, wherein a first aviation plug connector and a controller are provided on the outer side of the compressor, the controller comprises a control housing, a magnetic levitation bearing control component, a bracket and a PLC control component, the control housing covers the outer surface of the first aviation plug connector, the magnetic levitation bearing control component is arranged inside the control housing and fixed to the outer surface of the compressor, the bracket is arranged above the magnetic levitation bearing control component, and the PLC control component is arranged above the bracket; wherein a second aviation plug connector connected to the outside of the control housing is provided on the control housing, and the second aviation plug connector is connected to the suction end and the exhaust end of the compressor through a wiring harness.

[0008] Preferably, the compressor also includes a motor barrel, a motor stator, a motor rotor and a magnetic bearing, wherein the motor stator is arranged around the inner wall of the motor barrel and is connected to the motor barrel, the motor rotor is adapted to the motor stator, and the motor rotor is rotatably arranged in the motor barrel along the axial direction of the motor barrel, and the magnetic bearing is provided in two groups and is radially arranged on the left and right ends of the motor rotor respectively.

[0009] Preferably, a primary impeller and a secondary impeller are respectively installed on the two end portions of the motor rotor, the outer sleeve of the primary impeller is provided with a primary volute fixedly connected to the motor barrel, the outer sleeve of the secondary impeller is provided with a secondary volute fixedly connected to the motor barrel, and the secondary volute and the primary volute are respectively located on the left and right ends of the motor barrel; wherein, a gas transmission channel is also provided on the compressor, and the two ends of the gas transmission channel are respectively connected to the primary volute and the secondary volute.

[0010] Preferably, a cooling channel is provided inside the compressor, and the inside of the compressor is cooled and lowered through the cooling channel.

[0011] In summary, the advantages of the utility model are as follows:

[0012] The utility model can significantly shorten the development and debugging cycle of compressor control. Compared with the original individually debugged compressor, the independently controlled compressor reduces many intermediate links for customers, so that the controller can be used as a black box. It only needs to send the required working conditions to the compressor to directly control it. For manufacturers, highly integrated independently controlled compressors are more stable and help keep the technology confidential. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The control method flow chart of the unit system;

[0014] Figure 2 It is a simplified flow chart of the control method of the unit system;

[0015] Figure 3 The structure of the patented compressor is shown in FIG. Figure 1;

[0016] Figure 4 The structure of the patented compressor is shown in FIG. Figure 2 ;

[0017] Figure 5 The structure of the patented compressor is shown in FIG. Figure 3 ;

[0018] Figure 6 It is a schematic diagram of the specific internal structure of the controller;

[0019] Figure 7 is a cross-sectional view of the compressor of the present patent;

[0020] Figure numerals: 1. first aviation plug connector; 2. controller; 3. cooling channel; 11. motor barrel; 12. motor stator; 13. motor rotor; 14. magnetic bearing; 15. first-stage impeller; 16. second-stage impeller; 17. first-stage volute; 18. second-stage volute; 19. gas transmission channel; 21. control housing; 22. magnetic bearing control component; 23. bracket; 24. PLC control component; 25. second aviation plug connector. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 on the present application.

[0023] It should also be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0024] The specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings.

[0025] like Figures 1 to 7As shown, an integrated independently controllable magnetic suspension compressor includes a motor barrel 11, a motor stator 12, a motor rotor 13 and a magnetic suspension bearing 14. Specifically, the motor stator 12 is arranged around the inner wall of the motor barrel 11 and connected to the motor barrel 11, and the motor rotor 13 is adapted to the motor stator 12, and the motor rotor 13 is rotatably arranged in the motor barrel 11 along the axial direction of the motor barrel 11, and the magnetic suspension bearing 14 is provided with two groups and is radially arranged on the left and right ends of the motor rotor 13 respectively.

[0026] A primary impeller 15 and a secondary impeller 16 are respectively installed on the two end portions of the motor rotor 13. The outer sleeve of the primary impeller 15 is provided with a primary volute 17 fixedly connected to the motor barrel 11. The outer sleeve of the secondary impeller 16 is provided with a secondary volute 18 fixedly connected to the motor barrel 11. The secondary volute 18 and the primary volute 17 are respectively located on the left and right ends of the motor barrel 11. A gas transmission channel 19 is also provided on the compressor, and the two ends of the gas transmission channel 19 are respectively connected to the primary volute 17 and the secondary volute 18.

[0027] A cooling channel 3 is provided inside the compressor, and the cooling channel 3 is used to cool the inside of the compressor.

[0028] Since the above structures are basically existing technologies, they will not be described in detail. For the specific structures, please refer to the utility model patent with application number CN202320922950.4.

[0029] like Figures 3 to 5 As shown, the outer side of the compressor is provided with a first aviation plug connector 1 and a controller 2 covering the first aviation plug connector 1. The bearing control line, sensor harness, IGV guide vane and other internal wiring harnesses in the compressor can be led out to the controller 2 through the first aviation plug connector 1, and connected to the internal module of the controller 2, so that the controller 2 can directly control the compressor.

[0030] like Figures 3 to 6 As shown, specifically, the controller 2 includes a control housing 21 and a magnetic bearing control component 22, a bracket 23 and a PLC control component 24 arranged inside the control housing 21. The control housing 21 covers the outer surface of the first aviation plug connector 1, and the magnetic bearing control component 22 is fixedly arranged on the outer surface of the compressor while connecting the inner wiring harness led out above, the bracket 23 is arranged above the magnetic bearing control component 22, and the PLC control component 24 is arranged above the bracket 23. The above-mentioned structure can well perform data transmission / processing and heat dissipation of the controller 2.

[0031] The control housing 21 is provided with a second aviation plug connector 25 (which can be connected to a structural module inside the controller 2 ) which is connected to the outside of the control housing 21 , and the inside and outside of the entire controller 2 are connected via the second aviation plug connector 25 .

[0032] The second aviation plug connector 25 connects the suction end and the exhaust end of the compressor through a wiring harness, so that the controller 2 can obtain the suction pressure, suction temperature, exhaust pressure and exhaust temperature of the compressor.

[0033] Among them, the second aviation plug connector 25 can reserve a wiring harness to the unit control cabinet and inverter. During operation, the compressor controller 2 receives a control signal from the control cabinet, and controls the compressor speed and valve opening according to the sensor data monitoring on the suction and exhaust sides of the sensor, thereby achieving the effect of independent control of the compressor.

[0034] like Figures 1 to 3 As shown, regarding the inverter and unit control cabinet described above, the whole is a magnetic levitation centrifugal compressor unit system. The system conventionally includes an interconnected compressor, a controller 2, an inverter and a unit control cabinet, while the compressor and controller 2 in this patent are an integral part of an integrated setting, which can significantly shorten the development and debugging cycle of the compressor control. For customers, compared with the original individually debugged compressor, the independently controlled compressor reduces many intermediate links, so that the controller 2 can be used as a black box. It only needs to send the working conditions required by the compressor to directly control it. For manufacturers, highly integrated independently controlled compressors are more stable and help keep the technology confidential.

[0035] The above is a description of the embodiments of the utility model. Through the above description of the disclosed embodiments, professionals and technicians in the field can implement or use the utility model. Various modifications to these embodiments will be obvious to professionals and technicians in the field. The general principles defined in this article can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown in this article, but will conform to the widest range consistent with the principles and novelties disclosed in this article.

Claims

1. An integrated independently controllable magnetic levitation compressor, characterized in that: A first aviation plug connector (1) and a controller (2) are provided on the outer side of the compressor. The controller (2) comprises a control housing (21), a magnetic bearing control component (22), a bracket (23) and a PLC control component (24). The control housing (21) covers the outer surface of the first aviation plug connector (1). The magnetic bearing control component (22) is arranged inside the control housing (21) and fixed to the outer surface of the compressor. The bracket (23) is arranged above the magnetic bearing control component (22). The PLC control component (24) is arranged above the bracket (23). The control housing (21) is provided with a second aviation plug connector (25) connected to the outside of the control housing (21). The second aviation plug connector (25) is connected to the suction end and the exhaust end of the compressor through a wiring harness.

2. An integrated independently controllable magnetic levitation compressor according to claim 1, characterized in that: The compressor further comprises a motor barrel (11), a motor stator (12), a motor rotor (13) and a magnetic suspension bearing (14); the motor stator (12) is arranged around the inner wall of the motor barrel (11) and connected to the motor barrel (11); the motor rotor (13) is adapted to the motor stator (12); the motor rotor (13) is rotatably arranged in the motor barrel (11) along the axial direction of the motor barrel (11); and the magnetic suspension bearing (14) is provided in two groups and is radially arranged on the left and right ends of the motor rotor (13), respectively.

3. An integrated independently controllable magnetic levitation compressor according to claim 2, characterized in that: A primary impeller (15) and a secondary impeller (16) are respectively mounted on the two end portions of the motor rotor (13); the outer portion of the primary impeller (15) is provided with a primary volute (17) fixedly connected to the motor barrel (11); the outer portion of the secondary impeller (16) is provided with a secondary volute (18) fixedly connected to the motor barrel (11); the secondary volute (18) and the primary volute (17) are respectively located on the left and right ends of the motor barrel (11); wherein the compressor is also provided with a gas transmission channel (19); the two ends of the gas transmission channel (19) are respectively connected to the primary volute (17) and the secondary volute (18).

4. The integrated independently controllable magnetic levitation compressor according to claim 1, characterized in that: A cooling channel (3) is provided inside the compressor, and the cooling channel (3) is used to cool the inside of the compressor.

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