Heat dissipation piece and heat dissipation system of magnetic suspension refrigeration compressor and magnetic suspension refrigeration compressor

Abstract

The utility model provides a heat dissipation piece of a magnetic suspension refrigeration compressor, which comprises a fixing part, a first heat dissipation part and a second heat dissipation part, the heat dissipation part is in a flat plate shape, first refrigerant channels are formed in the heat dissipation part in a longitudinal and transverse mode, and the heat dissipation part is provided with first refrigerant output ports communicated with the first refrigerant channels; and the connecting part is connected with the fixing part and the heat dissipation part, the connecting part is provided with a first connecting channel, and the first connecting channel is communicated with the first refrigerant input port and the first refrigerant channel. According to the heat dissipation piece of the magnetic suspension refrigeration compressor, the refrigerant can flow in the first refrigerant channel in the heat dissipation piece, and by reducing the overall temperature of the heat dissipation piece, the temperature of an electronic element installed on the heat dissipation piece is reduced, the heat dissipation efficiency is improved, and the heat dissipation effect is enhanced.

Description

Technical Field

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

[0002] The power module of the magnetic levitation refrigeration compressor is used as a power supply, and some heat dissipation measures are needed to dissipate it, especially for the rectifier bridge. A large amount of heat will be generated when converting AC power into DC power. If this heat cannot be dissipated in time, the temperature of the rectifier bridge will rise. Excessive temperature may cause damage or even burn of the components of the rectifier bridge, affecting the normal operation of the compressor and even causing safety hazards.

[0003] Existing heat dissipation measures generally include installing a cooling fan on the compressor casing, applying heat dissipation glue on its installation position, and other heat dissipation methods to dissipate heat for the rectifier bridge. However, these heat dissipation methods have low heat dissipation efficiency and can easily cause heat to accumulate in the power module, causing safety hazards. Utility Model Content

[0004] The purpose of this application is to solve the above-mentioned problem, to provide a heat sink, a heat dissipation system and a magnetic levitation refrigeration compressor for a magnetic levitation refrigeration compressor, and to solve the technical problem that the heat dissipation effect of the rectifier bridge of the magnetic levitation refrigeration compressor is not ideal.

[0005] To achieve the above-mentioned purpose, the present application provides a heat sink for a magnetic suspension refrigeration compressor, comprising:

[0006] A fixing portion for fixing to the housing of the magnetic suspension refrigeration compressor, wherein the fixing portion is provided with a first refrigerant input port;

[0007] A heat dissipation portion in a flat plate shape and having first refrigerant channels arranged vertically and horizontally therein, wherein the heat dissipation portion is provided with a first refrigerant outlet communicating with the first refrigerant channels;

[0008] and a connecting portion connecting the fixing portion and the heat dissipation portion, wherein the connecting portion is provided with a first connecting channel, and the first connecting channel is connected with the first refrigerant input port and the first refrigerant channel.

[0009] Compared with the prior art, the utility model provides a heat sink for a magnetically suspended refrigeration compressor, in which refrigerant can flow in the first refrigerant channel inside, thereby reducing the overall temperature of the heat sink, thereby reducing the temperature of the rectifier bridge installed on the heat sink, improving the heat dissipation efficiency, and enhancing the heat dissipation effect.

[0010] In one embodiment, the extension direction of the first refrigerant channel is parallel to the top surface of the heat dissipation portion, and the heat dissipation rate at each position on the top surface of the heat dissipation portion is the same to ensure balanced heat dissipation.

[0011] In one embodiment, the heat dissipation portion includes a first side wall and a second side wall that are perpendicular to each other, and the first coolant channel includes at least one transverse channel extending from the first side wall to the inside of the heat dissipation portion, and at least one longitudinal channel extending from the second side wall to the inside of the heat dissipation portion, and the transverse channel and the longitudinal channel intersect vertically and are interconnected. The contact area between the coolant and the heat dissipation portion can be increased by connecting the transverse channel and the longitudinal channel, thereby improving the heat dissipation effect, and the transverse channel and the longitudinal channel have simple structures and are easy to process.

[0012] In one embodiment, the transverse channel includes a first transverse channel, a second transverse channel, and a third transverse channel arranged in sequence, the longitudinal channel includes a first longitudinal channel, a second longitudinal channel, and a third longitudinal channel arranged in sequence, the first connecting channel is connected to the first longitudinal channel, the first transverse channel is connected to the first longitudinal channel, the second transverse channel is connected to the second longitudinal channel, and the third transverse channel is connected to the third longitudinal channel; the first transverse channel is connected to the second transverse channel, the second longitudinal channel is connected to the third transverse channel, and the third longitudinal channel is connected to the first refrigerant outlet. The contact area between the refrigerant and the heat dissipation part is further increased, and the heat dissipation effect is further enhanced.

[0013] In one embodiment, the heat dissipation portion further includes a third side wall arranged opposite to the second side wall, the first side wall is perpendicular to the second side wall and the third side wall, the first refrigerant channel further includes a second connecting channel extending from the third side wall to the inside of the heat dissipation portion, and the second connecting channel connects the first transverse channel and the second transverse channel. The second connecting channel is used to connect the first transverse channel and the second transverse channel, and the refrigerant can be fully covered in the transverse channel and the longitudinal channel only through the first refrigerant input port, saving processing costs.

[0014] In one embodiment, the first side wall, the second side wall and the third side wall are provided with openings for processing the transverse channel, the longitudinal channel and the second connecting channel, and the openings are provided with blocking members for preventing leakage of refrigerant.

[0015] In one embodiment, the blocking member is a ball bearing, and the ball bearing is interference-fitted with the openings of the transverse channel and the longitudinal channel. The interference fit can enhance the sealing performance and prevent the refrigerant from leaking.

[0016] In one embodiment, the fixing portion is provided with a plurality of fixing holes, and the fixing holes are distributed in a triangular shape. The fixing holes distributed in a triangular shape can enhance the fastening degree of the heat sink mounted on the housing of the magnetic suspension refrigeration compressor.

[0017] The present application also provides a heat dissipation system for a magnetic levitation refrigeration compressor, comprising a shell, a mounting plate arranged on the shell, and the heat sink, wherein the shell is provided with a fixed platform, the fixed platform is provided with a second refrigerant channel, the mounting plate is arranged on the fixed platform and covers the second refrigerant channel, the mounting plate is provided with a third connecting channel, the second refrigerant channel is connected to the third connecting channel, the fixing part of the heat sink is fixed on the mounting plate, the third connecting channel is connected to the first refrigerant input port, and the first refrigerant output port is connected to the main refrigeration circuit of the magnetic levitation refrigeration compressor.

[0018] The present application also provides a magnetic levitation refrigeration compressor, including a motor stator, a rotor, an impeller assembly, a magnetic levitation bearing group, a power module, a thrust plate bearing, and a heat dissipation system of the magnetic levitation refrigeration compressor, 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 levitation bearing group, the impeller assembly and the thrust plate bearing are coaxially arranged on the rotating shaft of the rotor, and the power module is installed in the heat dissipation system.

[0019] For better understanding and implementation, the present application is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a heat sink in one embodiment of the present application;

[0021] Figure 2 A schematic structural diagram of a heat sink in one embodiment of the present application from another angle;

[0022] Figure 3 A schematic structural diagram of a heat sink in one embodiment of the present application from another angle;

[0023] Figure 4 A schematic structural diagram of a heat sink in one embodiment of the present application from another angle;

[0024] Figure 5 According to one embodiment of the present application Figure 4 A cross-sectional view of the heat sink along the AA direction;

[0025] Figure 6 A schematic structural diagram of a heat sink in one embodiment of the present application from another angle;

[0026] Figure 7 According to one embodiment of the present application Figure 6 A cross-sectional view of the heat sink along the BB direction;

[0027] Figure 8 This is a schematic diagram of the structure of a heat dissipation system in one embodiment of the present application;

[0028] Fig. 9 This is a schematic diagram of the structure of a housing in one embodiment of the present application;

[0029] Fig.10 According to one embodiment of the present application Fig. 9 A cross-sectional view of the shell along the CC direction;

[0030] Fig.11 According to one embodiment of the present application Fig. 9 Cross-sectional view of the shell along the DD direction;

[0031] Fig.12 This is a schematic structural diagram of a housing in another angle in an embodiment of the present application;

[0032] Fig.13 According to one embodiment of the present application Fig.12 A cross-sectional view of the shell along the EE direction;

[0033] Fig.14 This is a schematic structural diagram of a housing in another angle in an embodiment of the present application;

[0034] Fig.15 This is a schematic structural diagram of a housing in another angle in an embodiment of the present application;

[0035] Fig.16 This is a schematic diagram of the structure of a mounting plate in one embodiment of the present application;

[0036] Fig.17 This is a schematic diagram of the structure of a magnetic suspension refrigeration compressor in one embodiment of the present application;

[0037] Fig.18 It is a cross-sectional view of a magnetic suspension refrigeration compressor in one embodiment of the present application.

[0038] Numbers in the figure:

[0039] 1-fixed part, 2-heat dissipation part, 3-connecting part, 4-blocking part, 10-heat dissipation part, 11-first refrigerant input port, 12-fixed hole, 20-shell, 21-first refrigerant channel, 22-first refrigerant output port, 23-assembly recess, 24-mounting hole, 25-first side wall, 26-second side wall, 27-third side wall, 28-opening, 30-mounting plate, 31-first connecting channel, 40-motor stator, 50-rotor, 60-impeller assembly, 70-magnetic bearing group, 80-power module, 90-thrust plate bearing, 201-fixed platform, 202-total input port, 203-total input channel, 204-first A valve channel, 205-a second valve channel, 206-a check valve mounting portion, 207-a return port, 211-a transverse channel, 211a-a first transverse channel, 211b-a second transverse channel, 211c-a third transverse channel, 212-a longitudinal channel, 212a-a first longitudinal channel, 212b-a second longitudinal channel, 212c-a third longitudinal channel, 213-a second connecting channel, 301-a third connecting channel, 801-a rectifier bridge, 802-a DC power supply, 2011-a second refrigerant channel, 20111-a horizontal input section, 20112-a vertical input section, 20113-a heat dissipation section, 20114-a second refrigerant input port. DETAILED DESCRIPTION

[0040] 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.

[0041] 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.

[0042] 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.

[0043] The magnetic suspension refrigeration compressor is used in a refrigeration system, and the refrigeration system includes an evaporator, a magnetic suspension refrigeration compressor, a condenser and a throttling mechanism to realize a heat absorption cycle and a heat dissipation cycle. The specific working method is: after the liquid refrigerant absorbs the heat of the object in the evaporator, it vaporizes into low-temperature and low-pressure steam, and then is sucked into the magnetic suspension refrigeration compressor, and is compressed into high-pressure and high-temperature steam and then discharged into the condenser, and releases heat to the cooling medium (water or air) in the condenser, condenses into a high-pressure liquid refrigerant, and is throttled by the throttling mechanism to a low-pressure and low-temperature liquid refrigerant, and enters the evaporator again to absorb heat and vaporize, so as to achieve the purpose of circulating refrigeration. The whole process is circulated in the main refrigeration circuit. It should be noted that the main refrigeration circuit described in this application is a circuit through which the refrigerant circulates in the evaporator, the magnetic suspension refrigeration compressor, the condenser and the throttling mechanism.

[0044] Please also read Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 7 The present embodiment provides a heat sink 10 for a magnetic levitation refrigeration compressor. Specifically, the heat sink 10 includes a fixing portion 1 for fixing to the shell of the magnetic levitation refrigeration compressor, the fixing portion 1 being provided with a first refrigerant inlet 11; a heat sink 2 which is in a flat plate shape and has first refrigerant channels 21 arranged vertically and horizontally therein, the heat sink 2 being provided with a first refrigerant outlet 22 communicating with the first refrigerant channels 21; and a connecting portion 3 connecting the fixing portion 1 and the heat sink 2, the connecting portion 3 being provided with a first connecting channel 31, the first connecting channel 31 communicating with the first refrigerant inlet 11 and the first refrigerant channel 21.

[0045] The heat sink 10 is made of aluminum alloy material, has good thermal conductivity, and can quickly and efficiently dissipate heat for electronic components mounted on the heat sink 10. In another embodiment, the heat sink 10 can also be made of copper alloy or other thermally conductive materials. The fixing portion 1, the connecting portion 3 and the heat dissipation portion 2 together form a heat sink 10 with a "Z"-shaped cross section, which is convenient for fitting the housing 20 of the magnetic suspension refrigeration compressor.

[0046] Please also read Figure 3 and Figure 4 The fixing part 1 is a rectangular parallelepiped structure, which is convenient for processing and installation. In other embodiments, the fixing part 1 can also be a cylindrical structure or other structures. The first refrigerant input port 11 is arranged at the bottom of the fixing part 1, which is convenient for inputting refrigerant. In other embodiments, the first refrigerant input port 11 can also be arranged on the side wall of the fixing part 1.

[0047] The fixing portion 1 is provided with a plurality of fixing holes 12, and the fixing holes are distributed in a triangular shape, and the heat sink 10 can be fixed through the fixing holes 12. Specifically, the number of the fixing holes 12 is 4, and the fixing holes distributed in a triangular shape can enhance the fastening degree of the heat sink installed on the housing of the magnetic levitation refrigeration compressor. The fixing holes 12 are countersunk holes, which can avoid the interference of the screw heads with adjacent parts. In other embodiments, the number of the fixing holes 12 can also be 3, 5 or other numbers; the fixing holes 12 can also be ordinary threaded holes. In other embodiments, the heat sink 10 can also be fixed by snapping or welding.

[0048] Please also read Figure 4 and Figure 5 , the connecting portion 3 is perpendicular to the fixing portion 1 and the heat dissipation portion 2, the first connecting channel 31 is coaxially arranged with the first refrigerant input port 11, and is perpendicular to the first refrigerant channel 21. The vertical arrangement of the connecting channel can shorten the distance for the refrigerant to reach the first refrigerant channel 21, and further improve the heat dissipation efficiency. In another embodiment, the first connecting channel 31 and the first refrigerant input port 11 can also be arranged non-coaxially; the connecting channel can also be arranged at a non-90 degree angle with the first refrigerant channel 21.

[0049] Please also read Figure 2 and Figure 3 The bottom of the heat dissipation part 2 is provided with an assembly recess 23, and the assembly recess 23 is used to assemble the heat dissipation element 10 and the magnetic suspension refrigeration compressor. The top surface of the heat dissipation part 2 is provided with a plurality of mounting holes 24 for mounting the rectifier bridge 801. Specifically, the number of the mounting holes 24 is 7. In other embodiments, the number of the mounting holes 24 can also be 5, 6 or other numbers.

[0050] The extension direction of the first refrigerant channel 21 is parallel to the top surface of the heat dissipation portion 2, which can ensure that the heat dissipation rate at each position on the top surface of the heat dissipation portion 2 is the same, the heat dissipation is balanced, and the processing is convenient. In another embodiment, the extension direction of the first refrigerant channel 21 can also be set at a certain angle with the top surface of the heat dissipation portion 2 to increase the flow rate of the refrigerant and enhance the heat dissipation effect.

[0051] Please also read Figure 2 , Figure 6 and Figure 7 , the heat dissipation part 2 includes a first side wall 25 and a second side wall 26 which are perpendicular to each other, the first refrigerant channel 21 includes at least one transverse channel 211 extending from the first side wall 25 to the inside of the heat dissipation part 2, and at least one longitudinal channel 212 extending from the second side wall 26 to the inside of the heat dissipation part 2, the transverse channel 211 and the longitudinal channel 212 intersect vertically and are interconnected. The contact area between the refrigerant and the heat dissipation part 2 can be increased by connecting the transverse channel 211 and the longitudinal channel 212, thereby improving the heat dissipation effect. The drill bit of the machining lathe can vertically drill into the first side wall 25 and the second side wall 26 to form the transverse channel 211 and the longitudinal channel 212, and the manufacturing process is simple and convenient for processing. In another embodiment, the transverse channel 211 and the longitudinal channel 212 can also be set at an angle other than 90 degrees.

[0052] Further, the transverse channel 211 includes a first transverse channel 211a, a second transverse channel 211b and a third transverse channel 211c arranged in sequence, the longitudinal channel 212 includes a first longitudinal channel 212a, a second longitudinal channel 212b and a third longitudinal channel 212c arranged in sequence, the first connecting channel 31 is connected to the first longitudinal channel 212a, the first transverse channel 211a is connected to the first longitudinal channel 212a, the second transverse channel 211b is connected to the second longitudinal channel 212b, and the third transverse channel 211c is connected to the third longitudinal channel 212c; the first transverse channel 211a is connected to the second transverse channel 211b, the second longitudinal channel 212b is connected to the third transverse channel 211c, and the third longitudinal channel 212c is connected to the first refrigerant outlet 22. By respectively providing three transverse channels 211 and three longitudinal channels 212, and connecting them to each other, the contact area between the refrigerant and the heat dissipation part 2 can be further increased, the heat dissipation effect can be further enhanced, and a complete channel can be formed, thereby reducing the number of refrigerant input ports. In other embodiments, the number of the transverse channels 211 and the number of the longitudinal channels 212 may be 2, 4 or other numbers respectively.

[0053] Please also read Figure 3, Figure 6 and Figure 7 The heat dissipation part 2 also includes a third side wall 27 arranged opposite to the second side wall 26, the first side wall 25 is perpendicular to the second side wall 26 and the third side wall 27, and the first refrigerant channel 21 also includes a second connecting channel 213 extending from the third side wall 27 to the inside of the heat dissipation part 2, and the second connecting channel 213 connects the first transverse channel 211a and the second transverse channel 211b. The second connecting channel 213 is used to connect the first transverse channel 211a and the second transverse channel 211b, and the refrigerant can be fully covered in the transverse channel 211 and the longitudinal channel 212 only through the first refrigerant input port 11, saving processing costs. Specifically, the second connecting channel 213 is perpendicular to the first transverse channel 211a and the second transverse channel 211b, reducing the processing length of the second connecting channel 213 and saving costs. In another embodiment, the second connecting channel 213 can also intersect the first transverse channel 211a and the second transverse channel 211b at a certain acute angle or obtuse angle.

[0054] Please also read Figure 6 and Figure 7 The third transverse channel 211c extends along the interior of the heat dissipation portion 2 and sequentially penetrates the third longitudinal channel 212c and the second longitudinal channel 212b. After the third transverse channel 211c penetrates the third longitudinal channel 212c and the second longitudinal channel 212b, the first refrigerant channel 21 can form a complete passage, which facilitates the smooth flow of the refrigerant, and can further increase the flow area of ​​the refrigerant and enhance the heat dissipation effect.

[0055] Please also read Figure 1 and Figure 2 The first side wall 25, the second side wall 26 and the third side wall 27 are provided with openings 28 for processing the transverse channel 211, the longitudinal channel 212 and the second connecting channel 213, and the openings 28 are provided with blocking members 4 for preventing refrigerant leakage.

[0056] The blocking member 4 is a ball bearing, which is interference fit with the opening 28 of the transverse channel 211 and the longitudinal channel 212. The interference fit can enhance the sealing performance and prevent the refrigerant from leaking. Specifically, the inner diameter of the opening 28 is slightly larger than the inner diameters of the transverse channel 211, the longitudinal channel 212 and the second connecting channel 213, and the outer diameter of the ball bearing is slightly larger than the inner diameter of the opening 28, further enhancing the sealing performance. In another embodiment, the blocking member 4 can also be a sealing plug, etc.

[0057] Please also refer to 8 to Fig.16The present application also provides a heat dissipation system for a magnetic levitation refrigeration compressor, comprising a shell 20, a mounting plate 30 arranged on the shell 20, and the heat sink 10, wherein the shell 20 is provided with a fixed platform 201, and the fixed platform 201 is provided with a second refrigerant channel 2011, the mounting plate 30 is arranged on the fixed platform 201 and covers the second refrigerant channel 2011, the mounting plate 30 is provided with a third connecting channel 301, and the second refrigerant channel 2011 is connected to the third connecting channel 301, the fixing portion 1 of the heat sink 10 is fixed on the mounting plate 30, the third connecting channel 301 is connected to the first refrigerant input port 11, and the first refrigerant output port 22 is connected to the main refrigeration circuit of the magnetic levitation refrigeration compressor.

[0058] Please also read Figures 9 to 11 The shell 20 is provided with a total input port 202 and a total input channel 203 connected to the total input port 202 on the end face near one end of the thrust plate bearing, and the total input channel 203 extends into the shell 20 along the axial direction of the shell 20; the shell 20 is also provided with a first valve channel 204 and a second valve channel 205, the first valve channel 204 is arranged perpendicular to the axial direction of the shell 20 and is connected to the end of the total input channel 203 away from the thrust plate bearing, the second valve channel 205 is arranged perpendicular to the total input channel 203 and the first valve channel 204, the second valve channel 205 is connected to the first valve channel 204 and the second refrigerant channel 2011 at the head and tail respectively, and the shell 20 is provided with a check valve mounting portion 206, and the check valve mounting portion 206 is located between the first valve channel 204 and the second valve channel 205. The refrigerant flows in from the main input port 202, and sequentially flows through the main input channel 203, the first valve channel 204, the second valve channel 205, and the second refrigerant channel 2011. Specifically, the first valve channel 204 is located below the main input channel 203. After the refrigerant flows from the main input channel 203 to the first valve channel 204, it is not easy to form a backflow under the action of gravity. After the check valve is installed on the check valve installation part 206, the refrigerant can be further prevented from flowing back, the smoothness of the refrigerant circulation is improved, and the heat dissipation effect is enhanced.

[0059] Please also read Figures 11 to 13The second refrigerant channel 2011 includes a horizontal input section 20111, a vertical input section 20112 and a heat dissipation section 20113 which are interconnected. The horizontal input section 20111 extends along the axial direction of the shell 20 to connect with the second valve channel 205. The vertical input section 20112 is perpendicular to the horizontal input section 20111 and the second valve channel 205, extends along the direction of the fixed platform 201, and passes through the fixed platform 201, forming a second refrigerant input port 20114 in the heat dissipation section 20113. The heat dissipation section 20113 is arranged on the surface of the fixed platform 201, and is arranged in a circular ring shape or a square ring shape, which can maximize the contact area between the refrigerant and the mounting plate 30 and make the mounting plate 30 dissipate heat evenly.

[0060] See also Fig.15 The shell 20 is also provided with a reflux port 207 for conveying the refrigerant to the main refrigeration circuit, and the reflux port 207 is connected to the first refrigerant outlet 22 of the heat sink 10 .

[0061] The mounting plate 30 is used to mount the DC power supply 802 of the magnetic suspension refrigeration compressor, and the heat dissipation section 20113 dissipates heat for the DC power supply 802 .

[0062] The working process of the heat dissipation system of the magnetic suspension refrigeration compressor is as follows: the refrigerant flows in from the main input port 202, flows through the main input channel 203, the first valve channel 204, the second valve channel 205 and the second refrigerant channel 2011 of the shell 20 in sequence, and the refrigerant dissipates heat to the DC power supply 802 in the second refrigerant channel 2011, and then the refrigerant flows from the second refrigerant channel 2011 into the third connecting channel 301 of the mounting plate 30, and then flows into the first refrigerant input port 11 of the heat sink 10, and flows to the first refrigerant channel 21 heat dissipation rectifier bridge 801, and then flows to the first refrigerant output port 22, and finally returns to the main refrigeration circuit through the reflux port 207 of the shell 20.

[0063] Please also read Fig.17 and Fig.18 The present application also provides a magnetic levitation refrigeration compressor, including a motor stator 40, a rotor 50, an impeller assembly 60, a magnetic bearing group 70, a power module 80, a thrust plate bearing 90, and a heat dissipation system of the magnetic levitation refrigeration compressor. The housing 20, the motor stator 40 and the rotor 50 are sequentially sleeved, and both ends of the rotor 50 are rotatably connected to the housing 20 through the magnetic bearing group 70. The impeller assembly 60 and the thrust plate bearing 90 are coaxially arranged on the rotating shaft of the rotor 50, and the power module 80 is installed in the heat dissipation system.

[0064] The power module 80 includes a rectifier bridge 801 and a DC power supply 802 . The rectifier bridge 801 is mounted on the heat sink 10 , and the DC power supply is mounted on the mounting plate 30 .

[0065] 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 heat sink for a magnetic suspension refrigeration compressor, characterized in that: include: A fixing portion for fixing to the housing of the magnetic suspension refrigeration compressor, wherein the fixing portion is provided with a first refrigerant input port; A heat dissipation portion in a flat plate shape and having first refrigerant channels arranged vertically and horizontally therein, wherein the heat dissipation portion is provided with a first refrigerant outlet communicating with the first refrigerant channels; and a connecting portion connecting the fixing portion and the heat dissipation portion, wherein the connecting portion is provided with a first connecting channel, and the first connecting channel is connected with the first refrigerant input port and the first refrigerant channel.

2. The heat sink of the magnetic suspension refrigeration compressor according to claim 1 is characterized in that: An extension direction of the first cooling medium channel is parallel to a top surface of the heat dissipation portion.

3. The heat sink of the magnetic suspension refrigeration compressor according to claim 2 is characterized in that: The heat dissipation part includes a first side wall and a second side wall that are perpendicular to each other, the first refrigerant channel includes at least one transverse channel extending from the first side wall to the interior of the heat dissipation part, and at least one longitudinal channel extending from the second side wall to the interior of the heat dissipation part, the transverse channel intersects the longitudinal channel at right angles and are interconnected.

4. The heat sink of the magnetic suspension refrigeration compressor according to claim 3 is characterized in that: The transverse channel includes a first transverse channel, a second transverse channel and a third transverse channel arranged in sequence, and the longitudinal channel includes a first longitudinal channel, a second longitudinal channel and a third longitudinal channel arranged in sequence, the first connecting channel is connected to the first longitudinal channel, the first transverse channel is connected to the first longitudinal channel, the second transverse channel is connected to the second longitudinal channel, and the third transverse channel is connected to the third longitudinal channel; the first transverse channel is connected to the second transverse channel, the second longitudinal channel is connected to the third transverse channel, and the third longitudinal channel is connected to the first refrigerant outlet.

5. The heat sink of the magnetic suspension refrigeration compressor according to claim 4, characterized in that: The heat dissipation part also includes a third side wall arranged opposite to the second side wall, the first side wall is perpendicular to the second side wall and the third side wall, and the first refrigerant channel also includes a second connecting channel extending from the third side wall to the inside of the heat dissipation part, and the second connecting channel connects the first transverse channel and the second transverse channel.

6. The heat sink of the magnetic suspension refrigeration compressor according to claim 5, characterized in that: The first side wall, the second side wall and the third side wall are provided with openings for processing the transverse channel, the longitudinal channel and the second connecting channel, and the openings are provided with blocking members for preventing refrigerant leakage.

7. The heat sink of the magnetic suspension refrigeration compressor according to claim 6, characterized in that: The blocking member is a ball, and the ball is interference-fitted with the openings of the transverse channel and the longitudinal channel.

8. The heat sink of the magnetic suspension refrigeration compressor according to any one of claims 1 to 7, characterized in that: The fixing portion is provided with a plurality of fixing holes, and the fixing holes are distributed in a triangular shape.

9. A heat dissipation system for a magnetic suspension refrigeration compressor, characterized in that: It includes a shell, a mounting plate arranged on the shell, and a heat sink as described in any one of claims 1 to 8, wherein the shell is provided with a fixed platform, the fixed platform is provided with a second refrigerant channel, the mounting plate is arranged on the fixed platform and covers the second refrigerant channel, the mounting plate is provided with a third connecting channel, the second refrigerant channel is connected to the third connecting channel, the fixing part of the heat sink is fixed on the mounting plate, the third connecting channel is connected to the first refrigerant input port, and the first refrigerant output port is connected to the main refrigeration circuit of the magnetic levitation refrigeration compressor.

10. A magnetic suspension refrigeration compressor, characterized in that: It includes a motor stator, a rotor, an impeller assembly, a magnetic bearing group, a power module, a thrust plate bearing, and a heat dissipation system for a magnetic levitation refrigeration compressor as described in claim 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, the impeller assembly and the thrust plate bearing are coaxially arranged on the rotating shaft of the rotor, and the power module is installed in the heat dissipation system.

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