Magnetic suspension controller heat conduction plate, heat dissipation system and magnetic suspension refrigeration compressor

Abstract

The utility model provides a controller heat conduction plate of a magnetic suspension refrigeration compressor, which comprises a first mounting surface used for being assembled with a shell of the magnetic suspension refrigeration compressor in a matched manner and a second mounting surface used for mounting a controller of the magnetic suspension refrigeration compressor, the first mounting surface comprises an attaching part and fixing parts, the attaching part is used for being attached to a shell, the fixing parts are located at at least two ends of the attaching part and used for being fixed to the shell, and the second mounting surface is attached to the bottom of the controller. According to the controller heat conduction plate of the magnetic suspension refrigeration compressor, the heat conduction plate serves as a heat transfer medium, heat of the magnetic suspension controller is transferred to the shell with the low temperature, heat dissipation of the magnetic suspension controller is achieved, and the heat dissipation efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic suspension compressors, in particular to a magnetic suspension controller heat conduction plate, a heat dissipation system and a magnetic suspension refrigeration compressor. Background Art

[0002] The magnetic levitation controller is used to control the magnetic force of the magnetic levitation bearing of the magnetic levitation refrigeration compressor to achieve the support and suspension of the rotor by the bearing, thereby reducing energy loss and friction and wear. The magnetic levitation controller is generally installed on the casing of the magnetic levitation refrigeration compressor to connect and control the magnetic levitation bearing.

[0003] The magnetic levitation controller generates heat when it is working. In order to ensure the stable operation of the magnetic levitation controller and extend its service life, some heat dissipation measures are needed to dissipate the heat. The existing heat dissipation measures generally install a cooling fan on the compressor casing or set heat dissipation holes, ventilation ducts, etc. to achieve heat dissipation of the magnetic levitation controller. However, the heat dissipation efficiency of these heat dissipation methods is low, and heat is easily accumulated inside the magnetic levitation controller. Utility Model Content

[0004] The purpose of this application is to solve the above-mentioned problem and provide a magnetic levitation controller heat conduction plate, a heat dissipation system and a magnetic levitation refrigeration compressor to solve the technical problem of poor heat dissipation efficiency of the magnetic levitation controller.

[0005] To achieve the above-mentioned purpose, the present application provides a controller heat conductive plate of a magnetic levitation refrigeration compressor, comprising a first mounting surface for assembly with the shell of the magnetic levitation refrigeration compressor and a second mounting surface for installing the controller of the magnetic levitation refrigeration compressor, wherein the first mounting surface comprises a fitting portion for fitting with the shell, and fixing portions located at at least two ends of the fitting portion for fixing with the shell, and the second mounting surface fits with the bottom of the controller.

[0006] Compared with the prior art, the utility model discloses a heat conducting plate for a controller of a magnetic levitation refrigeration compressor, which uses the heat conducting plate as a medium for heat transfer, and transfers the heat of the magnetic levitation controller to a shell with a lower temperature, thereby achieving heat dissipation of the magnetic levitation controller with a higher heat dissipation efficiency.

[0007] In one embodiment, the fitting portion has an arcuate surface that matches the arcuate surface of the shell of the magnetic suspension refrigeration compressor, thereby increasing the fitting area with the shell and improving the heat dissipation efficiency.

[0008] The present application also provides a magnetic levitation controller heat dissipation system, including a shell of a magnetic levitation refrigeration compressor, and the heat conduction plate. The shell is provided with an open installation box, and a first refrigerant flow channel is provided in the shell. The refrigerant in the first refrigerant flow channel flows through the bottom of the installation box. The heat conduction plate is accommodated in the installation box, and the first installation surface of the heat conduction plate is assembled with the shell at the bottom of the installation box.

[0009] In one embodiment, the shell surface at the bottom of the installation box is an arc surface, and at least two ends of the arc surface are provided with a plurality of mounting column holes, the arc surface of the fitting portion of the heat conducting plate is fitted with the shell surface, and the fixing portion is provided with a plurality of countersunk holes, and the countersunk holes are matched with the mounting column holes. Countersunk screws are inserted into the countersunk holes and the mounting column holes, so that the heat conducting plate can be fixed to the shell while preventing the screw heads from interfering with the fitting of the heat conducting plate and the controller.

[0010] In one embodiment, the bottom of the fixing portion includes a fixing plane, and the fixing plane is in contact with the top of the mounting column hole, thereby further increasing the contact area between the heat conducting plate and the housing and further improving the heat dissipation efficiency.

[0011] In one embodiment, the second mounting surface is a second mounting plane that is in contact with a bottom plate of the controller.

[0012] In one embodiment, a check valve for preventing refrigerant backflow is further provided in the installation box, and the check valve is connected to the first refrigerant flow channel. The heat transfer plate also includes a first avoidance portion for avoiding the check valve to prevent interference with the normal installation and operation of the check valve.

[0013] In one embodiment, the first refrigerant flow channel is disposed in the housing around the motor stator of the magnetic suspension refrigeration compressor. The first refrigerant flow channel is used to dissipate heat from the motor stator to maintain the operational stability of the motor stator.

[0014] In one embodiment, the first refrigerant flow channel is spirally wound around the outer wall of the motor stator, or the first refrigerant flow channel is spirally wound around the inner wall of the shell. The contact area between the first refrigerant flow channel and the motor stator is increased, the heat dissipation of the motor stator is balanced, the shell can be cooled quickly, and the heat transfer efficiency of the heat conducting plate is improved.

[0015] The present application also provides a magnetic levitation refrigeration compressor, including a motor stator, a rotor, an impeller assembly, a magnetic levitation bearing group, and the magnetic levitation controller heat dissipation system. The housing, the motor stator and the rotor are sequentially arranged, and the two ends of the rotor are rotatably connected to the housing through the magnetic levitation bearing group. The impeller assembly is coaxially arranged on the rotating shaft of the rotor.

[0016] For better understanding and implementation, the present application is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a heat conducting plate in one embodiment of the present application;

[0018] Figure 2 A schematic structural diagram of a heat conducting plate in an embodiment of the present application from another angle;

[0019] Figure 3 This is a schematic diagram of the structure of a base plate of a controller in one embodiment of the present application;

[0020] Figure 4 This is a schematic diagram of a structure in which a controller in one embodiment of the present application is installed on a heat conducting plate;

[0021] Figure 5 This is a schematic diagram of the structure of a housing in one embodiment of the present application;

[0022] Figure 6 This is a schematic diagram of the structure of the assembly of the housing and the heat conducting plate in one embodiment of the present application;

[0023] Figure 7 A side view of a housing in one embodiment of the present application;

[0024] Figure 8 According to one embodiment of the present application Figure 6 A cross-sectional view of the shell along the AA direction;

[0025] Fig. 9 This is a schematic diagram of the structure of the cover body and the installation box in one embodiment of the present application;

[0026] Fig.10 This is a schematic diagram of the structure of a magnetic suspension refrigeration compressor in one embodiment of the present application;

[0027] Fig.11 It is a cross-sectional view of a magnetic suspension refrigeration compressor in one embodiment of the present application.

[0028] Numbers in the figure:

[0029] 1-heat conduction plate, 2-shell, 3-cover, 4-motor stator, 5-controller, 6-check valve, 7-rotor, 8-impeller assembly, 9-magnetic bearing group, 10-motor drive module, 11-first mounting surface, 12-second mounting surface, 13-first avoidance portion, 14-second avoidance portion, 21-arc surface, 22-mounting box, 23-first refrigerant flow channel, 24-mounting column hole, 25-mounting port, 26-boss, 27-main input port, 28-second refrigerant flow channel, 51-bottom plate, 111-fitting portion, 112-fixing portion, 241-top, 1111-arc surface, 1121-countersunk hole, 1122-fixing plane. DETAILED DESCRIPTION

[0030] 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, rather than all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the present application. It is understood that the drawings are only provided for reference and illustration, and are not used to limit the present application. The connection relationship shown in the drawings is only for the convenience of clear description and does not limit the connection method.

[0031] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component, or there may be an intermediate component at the same time. Unless otherwise defined, all technical and scientific terms used in this document have the same meaning as those generally understood by technicians in the technical field of this application. It should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The terms used in this document in the specification of this application are only for the purpose of describing specific embodiments, and are not intended to limit this application.

[0032] It should also be noted that in the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] Please also read Figure 1 to Figure 2 The present embodiment provides a controller heat conducting plate 1 of a magnetic levitation refrigeration compressor. Specifically, the heat conducting plate 1 includes a first mounting surface 11 for assembling with a shell 2 of the magnetic levitation refrigeration compressor and a second mounting surface 12 for mounting a controller 5 of the magnetic levitation refrigeration compressor. The first mounting surface 11 includes a fitting portion 111 for fitting with the shell 2, and fixing portions 112 located at at least two ends of the fitting portion 111 for fixing with the shell 2. The second mounting surface 12 fits with the bottom of the controller 5.

[0034] The heat conducting plate 1 is made of aluminum alloy, which has good thermal conductivity and can quickly transfer the heat of the controller 5 mounted on the heat conducting plate 1 to the housing 2 to achieve efficient heat dissipation. It also has good processing performance and can be processed into a corresponding shape according to the contour of the housing to be assembled, so as to facilitate fitting the housing. In other embodiments, the heat conducting plate 1 can also be made of copper alloy or other thermally conductive materials.

[0035] Please also read Figure 1 , Figure 5 and Figure 6 , the fitting portion 111 has an arcuate surface 1111 that matches the arcuate surface 21 of the housing 2 of the magnetic levitation refrigeration compressor. Specifically, the heat conducting plate 1 is the heat conducting plate 1 of the magnetic levitation controller, which is installed on the side of the housing 2 of the magnetic levitation refrigeration compressor. The arcuate surface 21 on the side of the housing 2 is an arcuate surface 21 that matches the motor stator 4 in the housing 2. The heat dissipation system of the motor stator 4 is located between the housing 2 and the motor stator 4. The heat dissipation system of the motor stator 4 will cool down the housing 2 while dissipating the heat of the motor stator 4. The arcuate surface 21 of the housing 2 is close to the heat dissipation system of the motor stator 4, so its temperature is relatively low. After the arcuate surface 1111 of the heat conducting plate 1 is fitted with the arcuate surface 21 of the housing 2, the contact area with the housing 2 can be increased, and the heat dissipation efficiency can be improved. In another embodiment, the heat conducting plate 1 may also be a heat conducting plate 1 of a motor drive controller. In this case, the heat conducting plate 1 is installed on the upper part of the shell, and the upper part of the shell has an installation plane. The fitting portion 111 of the heat conducting plate 1 is a planar portion that fits with the installation plane of the shell.

[0036] Please also read Figure 5 , Figure 6 and Figure 8 The present application also provides a magnetic suspension controller heat dissipation system, including a housing 2 of a magnetic suspension refrigeration compressor, and the above-mentioned heat conducting plate 1, wherein the housing 2 is provided with an opening mounting box 22, and a first refrigerant flow channel 23 is provided in the housing 2, and the refrigerant of the first refrigerant flow channel 23 flows through the bottom of the mounting box 22, and the heat conducting plate 1 is accommodated in the mounting box 22, and the first mounting surface 11 of the heat conducting plate 1 is assembled with the housing 2 at the bottom of the mounting box 22. The refrigerant of the first refrigerant flow channel 23 dissipates heat to the bottom of the mounting box 22, and the heat conducting plate 1, as a medium for heat transfer, transfers the heat of the controller 5 mounted on the heat conducting plate 1 to the mounting box 22, thereby achieving heat dissipation of the controller 5.

[0037] See also Fig. 9 The installation box 22 is also provided with a cover 3, and the cover 3 covers the installation box 22. The controller 5 of the magnetic suspension refrigeration compressor and the heat conducting plate 1 are accommodated in the accommodation cavity formed by the installation box 22 and the cover 3. The cover 3 is used to protect the controller 5 and the heat conducting plate 1 in the accommodation cavity, prevent foreign matter such as dust from entering the accommodation cavity to affect the controller 5 and the heat conducting plate 1, increase the service life of the components, and prevent accidental touch by personnel to cause safety hazards.

[0038] Please also read Figure 7 , Figure 8 and Fig.11 The first refrigerant flow channel 23 is disposed in the housing 2 around the motor stator 4 of the magnetic suspension refrigeration compressor. The first refrigerant flow channel 23 is used to dissipate heat from the motor stator 4. The first refrigerant flow channel 23 is disposed around the motor stator 4 to evenly dissipate heat from the motor stator 4 and maintain the operational stability of the motor stator 4.

[0039] Furthermore, the first refrigerant flow channel 23 is spirally wound around the outer wall of the motor stator 4, or the first refrigerant flow channel 23 is spirally wound around the inner wall of the shell 2. The spiral winding can fully increase the contact area between the first refrigerant flow channel 23 and the motor stator 4, so that the heat dissipation of the motor stator 4 is more balanced, and the shell 2 can be cooled quickly and evenly, increasing the temperature difference between the shell 2 and the heat conducting plate 1, and improving the heat dissipation effect of the controller 5.

[0040] Please also read Figures 2 to 4 The second mounting surface 12 is a second mounting plane that fits with the bottom plate 51 of the controller 5. The bottom plate 51 is a conventional PCB circuit board, which is convenient for arranging electronic components on it. The second mounting plane can fit with the bottom plate 51 to increase the contact area and improve the heat dissipation efficiency.

[0041] Please also read Figure 1 and Figure 5 The shell surface at the bottom of the installation box 22 is an arc surface 21, and at least two ends of the arc surface 21 are provided with a plurality of mounting column holes 24. The arc surface 1111 of the fitting portion of the heat conducting plate 1 fits with the shell surface 21, and the fixing portion 112 is provided with a plurality of countersunk holes 1121, and the countersunk holes 1121 match with the mounting column holes 24. Countersunk screws can be inserted into the countersunk holes 1121 and the mounting column holes 24 to fix the heat conducting plate 1 on the shell 2, which is simple and convenient to operate, and the use of countersunk screws can prevent the screw head from protruding from the second mounting surface 12 of the heat conducting plate 1, interfering with the fitting of the second mounting surface 12 and the controller 5. In other embodiments, the heat conducting plate 1 can also be fixed to the shell 2 by snaps or other conventional fixing methods.

[0042] The bottom of the fixing portion 112 includes a fixing plane 1122, and the fixing plane 1122 is in contact with the top 241 of the mounting column hole 24. The surface-to-surface contact assembly can further improve the stability after assembly, and can also further increase the contact area between the heat conducting plate 1 and the housing 2, thereby improving the heat dissipation efficiency. In another embodiment, the fixing portion is a recessed portion, and the top 241 of the mounting column hole 24 is a protruding portion, and the recessed portion and the protruding portion cooperate.

[0043] Please also read Figure 1 and Figure 5 The installation box 22 is also provided with a check valve 6 for preventing the refrigerant from flowing back, and the check valve 6 is connected to the first refrigerant flow channel 23. The heat conducting plate 1 also includes a first avoidance portion 13 for avoiding the check valve 6. Specifically, the check valve 6 is provided in the installation box 22 to prevent the check valve 6 from being damaged by the outside. The installation box 22 is provided with an installation port 25 for the check valve 6, and an installation space for the check valve 6 is formed between the installation port 25 and the first avoidance portion 13.

[0044] Please also read Figure 5 and Figure 7, the shell 2 is also provided with a boss 26 having a refrigerant channel, and the heat conducting plate 1 also includes a second avoidance portion 14 attached to the boss 26. Specifically, the shell 2 also includes a total refrigerant input port 27, and a second refrigerant flow channel 28 for cooling the motor drive module 10 integrated in the upper part of the shell 2. The total input port 27 is connected to the refrigerant channel of the boss 26 after passing through the check valve 6, and the refrigerant channel of the boss 26 is connected to the second refrigerant flow channel 28. The refrigerant enters from the total input port 27, flows through the check valve 6, and flows to the boss 26. At this time, the heat can be dissipated to the heat conducting plate 1, further improving the heat dissipation efficiency of the heat conducting plate 1, and then flows to the second refrigerant flow channel 28 to dissipate the heat of the motor drive module 10.

[0045] The magnetic suspension controller heat dissipation system of the present application can greatly improve the heat dissipation efficiency of the controller 5 integrated on the magnetic suspension refrigeration compressor and the motor stator 4 inside the shell 2 by adopting the heat conduction plate 1 of the present application.

[0046] Please also read Fig.10 and Fig.11 The present application also provides a magnetic suspension refrigeration compressor, including a motor stator 4, a rotor 7, an impeller assembly 8, a magnetic suspension bearing group 9, and the magnetic suspension controller heat dissipation system mentioned above, wherein the housing 2, the motor stator 4 and the rotor 7 are sequentially sleeved, the two ends of the rotor 7 are rotatably connected to the housing 2 through the magnetic suspension bearing group 9, and the impeller assembly 8 is coaxially arranged on the rotating shaft of the rotor 7. By adopting the controller heat conduction plate 1 of the magnetic suspension refrigeration compressor of the present application or the magnetic suspension controller heat dissipation system, the heat dissipation efficiency of the magnetic suspension refrigeration compressor can be greatly improved, and the stability of the magnetic suspension refrigeration compressor during operation can be improved.

[0047] The specific examples described above further illustrate the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A controller heat conducting plate for a magnetic suspension refrigeration compressor, characterized in that: It includes a first mounting surface for assembling with the shell of the magnetic levitation refrigeration compressor and a second mounting surface for installing the controller of the magnetic levitation refrigeration compressor, the first mounting surface includes a fitting portion for fitting with the shell, and fixing portions located at at least two ends of the fitting portion for fixing with the shell, and the second mounting surface fits with the bottom of the controller.

2. The controller heat conducting plate of the magnetic suspension refrigeration compressor according to claim 1, characterized in that: The fitting portion has an arc surface that matches the arc surface of the shell of the magnetic suspension refrigeration compressor.

3. A magnetic suspension controller heat dissipation system, characterized in that: It comprises a shell of a magnetic levitation refrigeration compressor, and a heat transfer plate as described in any one of claims 1 to 2, wherein an opening installation box is provided on the shell, a first refrigerant flow channel is provided in the shell, the refrigerant in the first refrigerant flow channel flows through the bottom of the installation box, the heat transfer plate is accommodated in the installation box, and the first installation surface of the heat transfer plate is assembled with the shell at the bottom of the installation box.

4. The magnetic suspension controller heat dissipation system according to claim 3 is characterized in that: The shell surface at the bottom of the installation box is an arc surface, and at least two ends of the arc surface are provided with a plurality of mounting column holes. The arc surface of the fitting portion of the heat conducting plate is fitted with the shell surface, and the fixing portion is provided with a plurality of countersunk holes, which cooperate with the mounting column holes.

5. The magnetic suspension controller heat dissipation system according to claim 4, characterized in that: The bottom of the fixing portion includes a fixing plane, and the fixing plane is in contact with the top of the mounting column hole.

6. The magnetic suspension controller heat dissipation system according to claim 3, characterized in that: The second mounting surface is a plane that fits the bottom plate of the controller.

7. The magnetic suspension controller heat dissipation system according to claim 3, characterized in that: A check valve for preventing the refrigerant from flowing back is also provided in the installation box, and the check valve is connected to the first refrigerant flow channel. The heat conduction plate also includes a first avoidance portion for avoiding the check valve.

8. The magnetic suspension controller heat dissipation system according to claim 3, characterized in that: The first refrigerant flow channel is arranged in the shell around the motor stator of the magnetic suspension refrigeration compressor.

9. The magnetic suspension controller heat dissipation system according to claim 8, characterized in that: The first refrigerant flow channel is spirally wound around the outer wall of the motor stator, or the first refrigerant flow channel is spirally wound around the inner wall of the shell.

10. A magnetic suspension refrigeration compressor, characterized in that: It includes a motor stator, a rotor, an impeller assembly, a magnetic bearing group, and a magnetic levitation controller heat dissipation system as described in any one of claims 3-9, wherein the housing, the motor stator and the rotor are sequentially sleeved, the two ends of the rotor are rotatably connected to the housing through the magnetic bearing group, and the impeller assembly is coaxially arranged on the rotating shaft of the rotor.

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