Magnetic suspension compressor and air conditioner
By setting up elastic heat conductors in the electronic control device of the magnetic levitation compressor, the problem of the bottom of the capacitor being disconnected from the cabinet is solved, effective heat dissipation of the capacitor is achieved, and the performance and stability of the electronic control device are improved.
Patent Information
- Application Number
- CN202422089706.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-27
AI Technical Summary
In the electronic control device of a magnetic levitation compressor, the bottom of the capacitor is disconnected from the housing, affecting the heat dissipation of the capacitor.
By setting an elastic heat conductor between the other end of the capacitor and the body, the elastic deformation of the elastic heat conductor makes up for the assembly error and dimensional error between the capacitor and the busbar and the body, so that the bottom of the capacitor is thermally connected to the body, thereby achieving heat dissipation of the capacitor.
It effectively solves the problem of the bottom of the capacitor being disconnected from the cabinet, ensures the heat dissipation of the capacitor, and improves the performance and stability of the electronic control device.
Smart Images
Figure CN223004218U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of compressor equipment, in particular to a magnetic levitation compressor and an air conditioner. Background Art
[0002] The electromechanical and electronic integrated magnetic levitation compressor comprises a machine body, a centrifugal impeller, a rotor, a stator, an electromagnetic bearing and an electronic control device integrated on the machine body.
[0003] Under the electromechanical and electronic integrated architecture, optimizing the heat dissipation of each component in the electronic control device is an important task to ensure the performance and stability of the electronic control device. The capacitor in the electronic control device is very easy to generate heat during operation. Therefore, the bottom of the capacitor needs to be in contact with the machine shell, and the heat generated by the capacitor is conducted to the machine shell to realize the heat dissipation of the capacitor. The positive terminal and negative terminal on the top of the capacitor are used to connect the bus bar. However, due to assembly errors or height dimension errors between different capacitors, when the capacitor is connected to the bus bar, the bottom of the capacitor is separated from the machine shell, affecting the heat dissipation of the bottom of the capacitor. Summary of the Utility Model
[0004] The purpose of the utility model is to at least solve the problem that the bottom of the capacitor is separated from the machine shell when the capacitor is connected to the bus bar. This purpose is achieved in the following way:
[0005] A first aspect of the utility model provides a compressor, the compressor comprises a machine body and an electronic control assembly, the electronic control assembly comprises a bus bar, a capacitor and an elastic heat conducting member, the bus bar is located at one end of the capacitor and is electrically connected to the capacitor, and the elastic heat conducting member is clamped between the capacitor and the machine body.
[0006] According to the compressor of the utility model, an elastic heat conducting member is arranged between the other end of the capacitor and the machine body. By the elastic deformation of the elastic heat conducting member, the assembly error between the capacitor and the bus bar and the machine body and the dimension error of the capacitor are compensated. When the capacitor is electrically connected to the bus bar, the bottom of the capacitor can be in heat conducting connection with the machine body through the elastic heat conducting member, so that the heat generated by the capacitor is transferred to the machine body through the elastic heat conducting member, which is beneficial to the heat dissipation of the capacitor.
[0007] In addition, according to the compressor of the utility model, the following additional technical features may also be provided:
[0008] In some embodiments of the present utility model, the electric control assembly further includes a power module. The power module is installed on the machine body. The power module includes an IGBT module and a first support column. The busbar is also electrically connected to the IGBT module. Along a first direction, the IGBT module and the capacitor are arranged at intervals. The first support column is located between the IGBT module and the capacitor, and the first support column is connected to the busbar. Wherein, the first direction is perpendicular to the direction from one end to the other end of the capacitor.
[0009] In some embodiments of the present utility model, the machine body has a first mounting surface and a second mounting surface. Along a direction perpendicular to the first mounting surface, the first mounting surface and the second mounting surface are arranged at intervals and do not coincide. The power module is installed on the first mounting surface, and the capacitor is installed on the second mounting surface.
[0010] In some embodiments of the present utility model, the power module further includes a radiator. The radiator is installed on the first mounting surface. The first support column is installed on the radiator, and the IGBT module is thermally connected to the radiator.
[0011] In some embodiments of the present utility model, the elastic heat conducting member includes a flexible heat conducting gasket.
[0012] In some embodiments of the present utility model, along the direction from one end to the other end of the capacitor, the compressible amount of the flexible heat conducting gasket is in the range of 1 mm to 3 mm.
[0013] In some embodiments of the present utility model, the electric control assembly includes a plurality of the capacitors, and each capacitor is correspondingly provided with an elastic heat conducting member.
[0014] In some embodiments of the present utility model, the electric control assembly further includes a connecting plate. The top of each capacitor abuts against and is connected to the connecting plate.
[0015] In some embodiments of the present utility model, the electric control assembly further includes a support plate, a plurality of clamps and a plurality of second support columns. The second support columns are installed on the machine body. The support plate is installed on the second support columns. The clamps are installed on the support plate. The support plate is provided with a plurality of mounting holes, and each capacitor passes through one of the mounting holes and is correspondingly installed with a clamp.
[0016] According to the second aspect of the present utility model, an air conditioner is further provided. The air conditioner includes the compressor according to any one of the first aspect. Description of the Drawings
[0017] Upon reading the following detailed description of the preferred embodiments, various other advantages and benefits will become apparent to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present utility model. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. Among them:
[0018] Figure 1 is a schematic structural diagram of some components of a compressor according to an embodiment of the present utility model;
[0019] Figure 2 is a schematic structural diagram of some components of a compressor after removing the busbar according to an embodiment of the present utility model;
[0020] Figure 3 is Figure 2 a partial enlarged schematic diagram of part A in;
[0021] Figure 4 is a schematic structural diagram of the body of a compressor according to an embodiment of the present utility model.
[0022] The reference numerals in the drawings are represented as follows:
[0023] 200, magnetic levitation compressor;
[0024] 210, body; 2101, first mounting surface; 2102, second mounting surface;
[0025] 100, electronic control component;
[0026] 10, busbar; 11, first connection part; 12, second connection part;
[0027] 20, capacitor;
[0028] 30, elastic heat conducting member;
[0029] 40, power module; 41, IGBT module; 42, first support column; 43, radiator;
[0030] 50, connecting plate;
[0031] 61, support plate; 62, clamp; 63, second support column;
[0032] X - first direction. Detailed implementation manners
[0033] Exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present utility model can be more thoroughly understood and the scope of the present utility model can be fully conveyed to those skilled in the art.
[0034] It should be understood that the terms used herein are for the purpose of describing specific exemplary embodiments only and are not intended to be limiting. Unless the context clearly dictates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing", and "having" are inclusive and thus specify the presence of the stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the particular order described or illustrated, unless the order of performance is explicitly stated. It should also be understood that additional or alternative steps may be used.
[0035] Although the terms first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another region, layer, or section. Unless the context clearly indicates otherwise, terms such as "first", "second", and other numerical terms used herein do not imply an order or sequence. Thus, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the exemplary embodiments.
[0036] For ease of description, spatial relative relationship terms may be used herein to describe the relationship of one element or feature shown in the figure to another element or feature, such as "inside", "outside", "inner side", "outer side", "below", "beneath", "above", "over", etc. Such spatial relative relationship terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is rotated, an element described as "below" or "beneath" another element or feature will then be oriented "above" or "over" the other element or feature. Thus, the exemplary term "below" can include both the upper and lower orientations.
[0037] According to an embodiment of the present invention, a magnetic levitation compressor 200 is provided. As Figure 1 shown, the magnetic levitation compressor 200 includes a body 210 and an electronic control assembly 100. Specifically, the body 210 is an integrally cast housing made of a metal material, and its material can be a metal material such as aluminum alloy. The electronic control assembly 100 is installed on the body 210. The electronic control assembly 100 includes a bus bar 10, a capacitor 20, and an elastic heat conducting member 30. The bus bar 10 is disposed at one end of the capacitor 20 and electrically connected to the capacitor 20. The elastic heat conducting member 30 is disposed at the other end of the capacitor 20 and is thermally connected to the capacitor 20 and the body 210 respectively. Herein, one end of the capacitor 20 refers to the top of the capacitor 20, and the other end of the capacitor 20 refers to the bottom of the capacitor 20.
[0038] An elastic heat conducting member 30 is disposed between the bottom of the capacitor 20 and the body 210. The elastic deformation of the elastic heat conducting member 30 compensates for the assembly error between the capacitor 20, the bus bar 10, and the body 210 and the dimensional error of the capacitor 20. When the capacitor 20 is electrically connected to the bus bar 10, the bottom of the capacitor 20 can be thermally connected to the body 210 through the elastic heat conducting member 30, so that the heat generated by the capacitor 20 is transferred to the body 210 through the elastic heat conducting member 30, which is beneficial to the heat dissipation of the capacitor 20.
[0039] Among them, the elastic heat conducting member 30 includes, but is not limited to, a metal member and a heat conducting silica gel member.
[0040] Furthermore, please refer to Figure 2 and Figure 3 shown, the electronic control assembly 100 further includes a power module 40. The power module 40 is installed on the body 210. The power module 40 includes a plurality of IGBT modules 41 and at least one first support column 42. Along the first direction, the IGBT modules 41 and the capacitor 20 are arranged at intervals. The first support column 42 is disposed between the IGBT modules 41 and the capacitor 20. The bus bar 10 includes a connected first connection portion 11 and a second connection portion 12. Both the first connection portion 11 and the second connection portion 12 are in a strip shape, and the length direction of the first connection portion 11 is perpendicular to the length direction of the second connection portion 12, so that the bus bar 10 has an overall "L" - shaped structure. The plurality of IGBT modules 41 are respectively electrically connected to the first connection portion 11, and the capacitor 20 is electrically connected to the second connection portion 12.
[0041] The top of the first support column 42 is connected to the bus bar 10. Specifically, a threaded hole is provided in the plane at the top of the first support column 42, and a through hole corresponding to the threaded hole is provided on the bus bar 10. A connecting member such as a bolt is passed through the through hole and inserted into the threaded hole and threadedly connected to the threaded hole, so as to fixedly connect the first support column 42 and the bus bar 10. In this embodiment, by providing the first support column 42 between the IGBT module 41 and the capacitor 20, and using the first support column 42 to support the bus bar 10, under the influence of the dimensional error and assembly error of the capacitor 20, when the bus bar 10 is connected to the capacitor 20 and the position of the second connecting portion 12 of the bus bar 10 deviates from the set position, the displacement of the bus bar 10 in the area connected thereto is fixed and restricted by the first support column 42. Since the first support column 42 is provided between the IGBT module 41 and the capacitor 20, the displacement or deformation of the second connecting portion 12 is blocked from being transmitted to the first connecting portion 11 by the first support column 42, thereby reducing the displacement and deformation of the first connecting portion 11 and further reducing the probability of damaging the IGBT module 41.
[0042] In this embodiment, please refer to Figure 1 and Figure 2 as shown, the first direction is perpendicular to the direction from the top to the bottom of the capacitor 20. Specifically, the capacitor 20 has a cylindrical shape, the top and bottom of the capacitor 20 are respectively the two ends of the capacitor 20 along its axial direction, and the direction from the top to the bottom of the capacitor 20 is parallel to the axis of the capacitor 20.
[0043] Furthermore, please refer to Figure 1 、 Figure 2 and Figure 4As shown, the body 210 has a first mounting surface 2101 and a second mounting surface 2102, both of which are planes, and the first mounting surface 2101 and the second mounting surface 2102 are arranged in parallel and spaced apart, and along a direction perpendicular to the first mounting surface 2101, the first mounting surface 2101 and the second mounting surface 2102 do not overlap, wherein the axial direction of the capacitor 20 is perpendicular to the first mounting surface 2101 and the second mounting surface 2102. The power module 40 is mounted on the first mounting surface 2101, and the capacitor 20 is mounted on the second mounting surface 2102. The above arrangement enables the body 210 to form two different installation spaces in a direction perpendicular to the first installation surface 2101. The power module 40 is installed on the first installation surface 2101, and the capacitor 20 is installed on the second installation surface 2102. This can reduce the height difference between the IGBT module 41 and the top of the capacitor 20 in the direction perpendicular to the first installation surface 2101, so that the connection position of the IGBT module 41 and the busbar 10 is kept as flush as possible with the positive / negative terminals on the top of the capacitor 20. On the premise of reducing the bending deformation of the busbar 10, they are electrically connected to the IGBT module 41 and the capacitor 20 respectively, and the overall structure of the capacitor 20 and the IGBT module 41 is compact and easy to install.
[0044] In this embodiment, please combine Figure 1 and Figure 4 As shown, a plurality of circular grooves are provided on the second mounting surface 2102, and each elastic heat conductive member 30 is provided in a circular groove. When the capacitor 20 is installed in the body 210, at least part of the bottom of the capacitor 20 can compress the elastic heat conductive member 30 and extend into the circular groove.
[0045] Furthermore, the power module 40 further includes a heat sink 43, the heat sink 43 is mounted on the first mounting surface 2101, the first support column 42 is mounted on the heat sink 43, and the IGBT module 41 is thermally connected to the heat sink 43. The heat sink 43 is used to assist the IGBT module 41 in dissipating heat, thereby improving the heat dissipation efficiency of the IGBT module 41, and the first support column 42 and the IGBT module 41 are mounted on the heat sink 43 together, and compared with the case where the first support column 42 and the IGBT module 41 are mounted on different devices, the relative position between the first support column 42 and the IGBT module 41 has a smaller assembly error after assembly, and in the process of the busbar 10 being respectively connected to the IGBT module 41 and the first support column 42, the displacement and deformation of the first connecting portion 11 caused by the relative position error between the first support column 42 and the IGBT module 41 is further reduced, thereby reducing the probability of damage to the IGBT module 41.
[0046] In this embodiment, the elastic thermally conductive member 30 includes a flexible thermally conductive gasket, which includes but is not limited to sheet-like objects in the form of metal plates, epoxy thermally conductive pads, thermally conductive plastics, thermally conductive rubber, thermally conductive silicone gaskets, etc.
[0047] In this embodiment, the compression amount of the flexible thermally conductive gasket from the top to the bottom of the capacitor 20 ranges from 1 mm to 3 mm. For example, the compression amount of the flexible thermally conductive gasket can be set to 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, etc.
[0048] In some embodiments of the present invention, Figure 1 , Figure 2 and Figure 3 As shown, the electric control component 100 includes 4 capacitors 20 and 4 elastic heat-conducting members 30, and an elastic heat-conducting pad is provided at the bottom of each capacitor 20. The electric control component 100 also includes a connecting plate 50, and the connecting plate 50 is provided with a plurality of through holes, and the through holes are used for the positive electrode terminals and negative electrode terminals at the top of the capacitor 20 to pass through, and the top of each capacitor 20 is abutted against and connected to the connecting plate 50. Among them, the tops of the four capacitors 20 are respectively abutted against the connecting plate 50 and the plate surface of the connecting plate 50 is used to keep the top planes of all the capacitors 20 flush, reducing the height difference of the terminals of each capacitor 20 in the axial direction of the capacitor 20, so that when the second connecting portion 12 of the busbar 10 is connected to the positive electrode terminals or negative electrode terminals of each capacitor 20, the installation position on the busbar 10 corresponding to each capacitor 20 can be quickly aligned with the positive electrode terminals or negative electrode terminals of the capacitor 20, and the deformation of the busbar 10 after the busbar 10 is connected to the capacitor 20 is reduced.
[0049] Furthermore, if Figure 1 As shown, the electric control component 100 also includes a support plate 61, a plurality of clamps 62 and a plurality of second support columns 63, the second support columns 63 are mounted on the second mounting surface 2102, the support plate 61 is mounted on the end of the second support column 63 away from the second mounting surface 2102 by screws, and 4 mounting holes are provided on the support plate 61, a clamp 62 is correspondingly installed on the circumference of each mounting hole, and each capacitor 20 is penetrated in a mounting hole and correspondingly installed on a clamp 62. In this embodiment, the clamp 62 and the support plate 61 are used to realize the installation and fixation of the capacitor 20, so as to avoid the capacitor 20 from shaking relative to the body 210 during the operation of the magnetic levitation compressor 200, so as to ensure that the bottom of the capacitor 20 can always maintain good contact with the body 210 through the elastic heat conductive member 30, and improve the stability of the electrical connection between the capacitor 20 and the busbar 10.
[0050] The magnetic levitation compressor 200 further includes an impeller (not shown in the figure) installed on the machine body 210, an integrated motor rotor and a drive shaft (not shown in the figure) made of permanent magnet material, a permanent magnet synchronous motor (not shown in the figure), electromagnetic bearings and other devices (not shown in the figure). The electronic control component 100 is installed on the machine body 210. The electronic control component 100 includes an AC / DC power conversion device (not shown in the figure), an electromagnetic bearing control device (not shown in the figure), a soft start control device (not shown in the figure), etc. The electronic control component 100 is used to supply power to devices such as the permanent magnet synchronous motor in the magnetic levitation compressor 200 and control its operation.
[0051] According to the second aspect of the present invention, an air conditioner is further proposed. The air conditioner includes the magnetic levitation compressor 200 according to any one of the first aspect. The working cycle of the refrigerant in the air conditioner proposed in this embodiment is as follows: The high-temperature and high-pressure refrigerant (such as Freon, etc.) is discharged from the air conditioner compressor and enters the condenser, releases heat to the copper tube cooling water, and condenses into a medium-temperature and high-pressure refrigerant liquid. Then it passes through the throttle valve to be depressurized into a low-temperature and low-pressure liquid and enters the evaporator, absorbs heat from the chilled water flowing through the copper tube in the evaporator housing, vaporizes into a low-temperature and low-pressure gas and is sucked into the magnetic levitation compressor 200, and is compressed into a high-temperature and high-pressure gas by the impeller in the magnetic levitation compressor 200 and discharged. Through this cycle, the purpose of cooling is finally achieved.
[0052] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims
1. A magnetic levitation compressor, characterized in that: The magnetic levitation compressor includes a body and an electric control component, the electric control component includes a busbar, a capacitor and an elastic heat conductive member, the busbar is located at one end of the capacitor and is electrically connected to the capacitor, and the elastic heat conductive member is sandwiched between the other end of the capacitor and the body.
2. The magnetic levitation compressor according to claim 1, characterized in that: The electric control assembly further comprises a power module, the power module is mounted on the body, the power module comprises an IGBT module and a first support column, and the busbar is also electrically connected to the IGBT module; Along the first direction, the IGBT module and the capacitor are spaced apart, the first support column is located between the IGBT module and the capacitor, and the first support column is connected to the busbar; The first direction is perpendicular to a direction from one end to the other end of the capacitor.
3. The magnetic levitation compressor according to claim 2, characterized in that: The machine body has a first mounting surface and a second mounting surface, and along a direction perpendicular to the first mounting surface, the first mounting surface and the second mounting surface are arranged at intervals and do not overlap; The power module is mounted on the first mounting surface, and the capacitor is mounted on the second mounting surface.
4. The magnetic levitation compressor according to claim 3, characterized in that: The power module further includes a heat sink, which is mounted on the first mounting surface, the first support column is mounted on the heat sink, and the IGBT module is thermally connected to the heat sink.
5. The magnetic levitation compressor according to claim 1, characterized in that: The elastic heat-conducting member includes a flexible heat-conducting gasket.
6. The magnetic levitation compressor according to claim 5, characterized in that: In a direction from the one end to the other end of the capacitor, the compressible amount of the flexible thermally conductive gasket is in a range of 1 mm to 3 mm.
7. The magnetic levitation compressor according to any one of claims 1 to 6, characterized in that: The electric control component includes a plurality of the capacitors, and each of the capacitors is provided with a corresponding elastic heat-conducting member.
8. The magnetic levitation compressor according to claim 7, characterized in that: The electric control component also includes a connecting plate, and the top of each capacitor is against and connected to the connecting plate.
9. The magnetic levitation compressor according to claim 7, characterized in that: The electronic control component also includes a support plate, a plurality of clamps and a plurality of second support columns, the second support columns are installed on the body, the support plate is installed on the second support columns, the clamps are installed on the support plate, the support plate is provided with a plurality of mounting holes, each of the capacitors is passed through one of the mounting holes and is correspondingly installed with one of the clamps.
10. An air conditioner, characterized in that: The air conditioner comprises the magnetic levitation compressor according to any one of claims 1 to 9.