A frequency converter assembly and air compressor

Abstract

The utility model provides a kind of frequency converter assembly and air compressor, frequency converter assembly includes: turnover plate, frequency converter main control board, rotating part and connection support sheet metal, the frequency converter main control board is set on the turnover plate, and one side of the turnover plate is connected on the connection support sheet metal by the rotating part, so that the turnover plate can be turned over relative to the connection support sheet metal. According to the utility model, components can be installed on a sheet metal part that can be opened and closed, making it easy to install and maintain internal components. It effectively solves the problem of low efficiency of internal maintenance of the frequency converter in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter technology, specifically to a frequency converter component and an air compressor. Background Technology

[0002] With the rapid development of electronic technology, frequency converter technology has also developed faster and been widely used. While meeting basic functions, existing industrial frequency converters generally adopt independent heat sinks and fixed housing structures. Their heat dissipation system consists of independent aluminum heat sinks, thermal grease, and module pressing, resulting in significant thermal resistance between the module and the heat sink; furthermore, disassembly is required for maintenance, leading to low maintenance efficiency.

[0003] Because existing frequency converters suffer from technical problems such as low efficiency in internal maintenance, this utility model researches and designs a frequency converter assembly and an air compressor. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the defect of low efficiency in internal maintenance of frequency converters in the prior art, thereby providing a frequency converter component and an air compressor.

[0005] To address the aforementioned problems, this utility model provides a frequency converter assembly, comprising: The components include a flip plate, a frequency converter main control board, a rotating component, and a connecting support sheet metal. The frequency converter main control board is mounted on the flip plate, and one side of the flip plate is connected to the connecting support sheet metal via the rotating component, allowing the flip plate to flip relative to the connecting support sheet metal.

[0006] In some implementations... It also includes relays, terminal blocks, and switching power supplies. The relays, terminal blocks, and switching power supplies are all mounted on the flip plate and can also rotate around the rotating component along with the flip plate.

[0007] In some implementations... It also includes a filter board, a switching power supply board, a sampling board, and a discharge resistor board. The filter board, the switching power supply board, the sampling board, and the discharge resistor board are all disposed on the device support board, and the device support board is disposed on the second side of the flip plate. The inverter main control board, the relay, the terminal block, and the switching power supply are all disposed on the first side of the flip plate. The first side and the second side are the two opposite sides of the flip plate.

[0008] In some implementations... It also includes an auxiliary cooling fan, which is located on one side of the flip plate and is opposite to the inverter main control board, the relay, the terminal block, the switching power supply, the filter board, the switching power supply board, the sampling board and the discharge resistor board, so as to dissipate heat from the above components.

[0009] In some implementations... It also includes a partition, with the flip-up plate located above the partition. The upper part of the partition is the upper structure of the frequency converter, i.e., the weak current layer, and the lower part of the partition is where power devices are installed, i.e., the lower structure of the frequency converter, i.e., the strong current layer. The overcurrent of the strong current layer is greater than that of the weak current layer.

[0010] In some implementations... The power device includes a rectifier module, an inverter module, a busbar, and a capacitor, as well as a heat sink, which is also located below the partition plate, and the rectifier module and the inverter module are mounted on the heat sink.

[0011] In some implementations... The power device further includes an input copper sheet assembly and an output copper sheet assembly, which are electrically connected to the busbar, and the busbar is electrically connected to the rectifier module and the inverter module, respectively.

[0012] In some implementations... It also includes a copper sheet support sheet metal, wherein the incoming copper sheet assembly and the outgoing copper sheet assembly are respectively fixed to the copper sheet support sheet metal, and there are multiple incoming copper sheet assemblies and multiple outgoing copper sheet assemblies.

[0013] In some implementations... It also includes a capacitor support sheet metal and a main cooling fan. The capacitor is electrically connected to the busbar and is fixedly connected to the capacitor support sheet metal. The main cooling fan is arranged opposite to the heat sink.

[0014] This utility model also provides an air compressor, which includes the aforementioned frequency converter assembly.

[0015] The frequency converter assembly and air compressor provided by this utility model have the following beneficial effects: 1. This utility model, through the design of a flip-up plate, places the inverter's main control board on the flip-up plate. One side of the flip-up plate is connected to the connecting support sheet metal via a rotating component, allowing the flip-up plate to rotate relative to the connecting support sheet metal. This enables the inverter's main control board and other components to be mounted on the flip-up plate. The flipping of the plate allows the internal structure of the inverter to be opened, facilitating the maintenance of internal components. This utility model allows components to be mounted on an openable sheet metal piece, making the installation and maintenance of internal components convenient; effectively solving the problem of low efficiency in internal maintenance of existing inverters.

[0016] 2. This utility model further utilizes a partition structure to separate the components in the low-voltage layer above the partition, forming the upper structure of the frequency converter, and the components in the high-voltage layer below the partition, forming the lower structure of the frequency converter. This separation of high-voltage and low-voltage components, along with the upper and lower separation created by the partition, effectively ensures electrical safety. Furthermore, this utility model employs an auxiliary cooling fan for heat dissipation of the upper low-voltage layer components and a heat sink plus a main cooling fan structure for heat dissipation of the lower high-voltage layer components. This separation of heat dissipation in the layered structure, with main and auxiliary heat dissipation layers, significantly improves the heat dissipation efficiency of the frequency converter. Attached Figure Description

[0017] Figure 1 This is a side view of the inverter assembly of this utility model; Figure 2 This is a diagram of the upper structure of the inverter assembly of this utility model; Figure 3 yes Figure 1 The back structure diagram of the flipped sheet metal; Figure 4 This is a lower-level structural diagram of the frequency converter assembly of this utility model; Figure 5 This is an internal structural diagram of the frequency converter assembly of this utility model; Figure 6 This is a structural diagram of the inverter assembly of this utility model; Figure 7 This is a top view of the inverter assembly of this utility model; Figure 8 This is an external structural diagram of the frequency converter assembly of this utility model.

[0018] The reference numerals in the attached figures are as follows: 1. Inverter upper structure; 2. Inverter lower structure; 3. Top cover; 4. Chassis; 5. Bottom cover; 6. Incoming / outgoing cable side plates; 11. Inverter main control board; 12. Flip plate (preferably flip sheet metal); 13. Connecting support sheet metal; 14. Rotating component (preferably hinge); 15. Switching power supply; 16. Support sheet metal; 17. Relay; 18. Terminal block; 19. Partition; 111. Auxiliary cooling fan; 112. Fan dust cover; 113. Switching power supply board; 114. Sampling board; 115. Filter board; 116. Discharge resistor board; 117. Component support board; 21. Heat sink; 22. Rectifier module; 23. Inverter Module; 24. Incoming copper sheet assembly; 25. Outgoing copper sheet assembly; 26. Copper sheet support sheet metal; 27. Busbar; 28. Capacitor; 29. ​​Capacitor support sheet metal; 211. DC contactor; 212. Charging resistor; 213. Switching power supply support sheet metal; 214. Wiring support sheet metal; 215. Output current sensor; 216. Main cooling fan; 217. Charging resistor support sheet metal; 31. Control module; 32. Heat sink module; 33. Incoming and outgoing line module; 34. Indicator light; 35. Capacitor module; 36. Heat sink support sheet metal; 37. Partition support sheet metal; 38. Grounding copper sheet support sheet metal; 41. Inverter hanging mounting hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0020] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0021] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0022] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0023] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0024] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0025] like Figure 1-8 As shown, this utility model provides a frequency converter assembly, which includes: The components include a flip plate 12, a frequency converter main control board 11, a rotating component 14, and a connecting support sheet metal 13. The frequency converter main control board 11 is disposed on the flip plate 12, and one side of the flip plate 12 is connected to the connecting support sheet metal 13 through the rotating component 14, so that the flip plate 12 can be flipped relative to the connecting support sheet metal 13.

[0026] This invention utilizes a flip-up plate structure to mount the inverter's main control board. One side of the flip-up plate is connected to a supporting sheet metal via a rotating component, allowing the flip-up plate to rotate relative to the supporting sheet metal. This enables the inverter's main control board and other components to be mounted on the flip-up plate. The flip-up plate allows the inverter's internal structure to be opened for maintenance of internal components. This invention mounts components on an openable sheet metal piece, facilitating the installation and maintenance of internal components; effectively solving the problem of low efficiency in internal maintenance of existing inverters.

[0027] In some implementations... It also includes a relay 17, a terminal block 18, and a switching power supply 15. The relay 17, the terminal block 18, and the switching power supply 15 are all disposed on the flip plate 12 and can also rotate around the rotating member 14 together with the flip plate 12.

[0028] This is a further preferred structural form of the inverter assembly of this utility model, namely, the flip plate is also provided with relays, terminal blocks and switching power supplies, so that the relevant control low-voltage parts are set on the flip plate. The internal structure of the inverter can be opened by the flipping movement of the flip plate, thereby completing the internal repair and maintenance and improving maintenance efficiency.

[0029] This utility model provides a frequency converter for an air-cooled air compressor, including an upper frequency converter structure 1, a lower frequency converter structure 2, an upper cover plate 3, a chassis 4, and a lower cover plate 5. The upper frequency converter structure 1 is located on top of a flip plate 12 (flip sheet metal), and the lower frequency converter structure 2 is located below the flip plate 12. The control module 31, terminal block 18, and other components are located on the flip plate 12. The preferred height of the frequency converter is 455mm, the length is 1010mm, and the width is 683mm. The flip plate 12 is mounted on the chassis 4 via a connecting support sheet metal 13, a rotating component 14 (preferably a hinge), and a supporting sheet metal 16. The entire frequency converter structure is divided into upper and lower layers.

[0030] In some implementations... It also includes a filter board 115, a switching power supply board 113, a sampling board 114, and a discharge resistor board 116. The filter board 115, the switching power supply board 113, the sampling board 114, and the discharge resistor board 116 are all disposed on the device support plate 117, and the device support plate 117 is disposed on the second surface of the flip plate 12. The inverter main control board 11, the relay 17, the terminal block 18, and the switching power supply 15 are all disposed on the first surface of the flip plate 12. The first surface and the second surface are the two opposite sides of the flip plate 12.

[0031] This invention further integrates as many low-voltage components as possible into the flip plate by setting up the filter board, switching power supply board, sampling board, and discharge resistor board, especially by setting the aforementioned components on the second side of the flip plate (i.e., the back of the flip plate) via a component support plate, while setting the aforementioned inverter main control board, relay, terminal block, and switching power supply on the first side of the flip plate (i.e., the front of the flip plate). This improves the compactness of the structure and allows all components to be flipped together with the flip plate, thereby improving the efficiency of maintenance inside the inverter.

[0032] See Figure 2-3 The upper structure 1 of the frequency converter includes a frequency converter main control board 11, a switching power supply 15, a terminal block 18, a switching power supply board 113, a filter board 115, a discharge resistor board 116, and a sampling board 114 (voltage sampling board). A flip plate 12 (flip sheet metal) is fixed to the connecting support sheet metal 13 via a rotating component 14 (hing). The frequency converter main control board 11, the switching power supply board 113, the filter board 115, the discharge resistor board 116, and the sampling board 114 are mounted on a device support plate 117 (flip sheet metal) via bolts, support caps, and support seats.

[0033] In some implementations... It also includes an auxiliary cooling fan 111, which is located on one side of the flip plate 12 and is opposite to the inverter main control board 11, the relay 17, the terminal block 18, the switching power supply 15, the filter board 115, the switching power supply board 113, the sampling board 114 and the discharge resistor board 116, so as to dissipate heat from the above components.

[0034] This invention also employs auxiliary cooling fans for the upper low-voltage components, which can effectively dissipate heat for multiple components in the upper layer, thus improving the heat dissipation efficiency. By using different cooling fans for the upper and lower components, this invention can achieve separate heat dissipation, thereby improving the heat dissipation efficiency, especially for the upper components.

[0035] In some implementations... It also includes a partition 19, with the flip plate 12 located above the partition 19. The upper part of the partition 19 is the upper structure 1 of the frequency converter, which is the weak current layer. The lower part of the partition 19 is equipped with power devices and is the lower structure 2 of the frequency converter, which is the strong current layer. The overcurrent of the strong current layer is greater than that of the weak current layer.

[0036] This invention further utilizes the partition structure to separate the components with a weak current layer above the partition, forming the upper structure of the frequency converter, and the components with a strong current layer below the partition, forming the lower structure of the frequency converter. This separation of strong and weak current components, along with the vertical separation created by the partition, effectively ensures electrical safety.

[0037] This utility model adopts a sheet metal layered structure, integrating components onto a single sheet metal piece for efficient mounting on the chassis, saving installation space and facilitating maintenance. The layered structure also separates strong and weak current components, ensuring electrical safety. Furthermore, the layered structure separates heat dissipation into main and auxiliary layers. The main heat dissipation layer cools the inverter's main power components, significantly improving the inverter's heat dissipation efficiency.

[0038] In some implementations... The power device includes a rectifier module 22, an inverter module 23, a busbar 27, and a capacitor 28, and also includes a heat sink 21, which is located below the partition 19, and the rectifier module 22 and the inverter module 23 are disposed on the heat sink 21.

[0039] This is a preferred structure for the lower-layer power devices of this utility model, which includes a rectifier module, an inverter module, a busbar, and capacitors. Furthermore, through the structure of the heat sink, the lower-layer high-voltage components are cooled by a heat sink plus a main cooling fan, thus separating the heat dissipation of the layered structure. This results in the heat dissipation of the upper and lower layer components being divided into two layers: main heat dissipation and auxiliary heat dissipation, thereby significantly improving the heat dissipation efficiency of the frequency converter.

[0040] To address the maintenance efficiency issue, this utility model proposes mounting the components on an openable sheet metal part for easy installation and maintenance. The rectifier module and heat dissipation module are integrated into a single heat sink, improving installation convenience and heat dissipation efficiency.

[0041] In some implementations... The power device also includes an input copper sheet assembly 24 and an output copper sheet assembly 25. The input copper sheet assembly 24 and the output copper sheet assembly 25 are electrically connected to the busbar 27, and the busbar 27 is electrically connected to the rectifier module 22 and the inverter module 23, respectively.

[0042] This is a further preferred structural form of the lower-level high-power device of this utility model. It can be electrically connected to the busbar through the inlet copper sheet assembly and the outlet copper sheet assembly to input current and output current to the busbar. The busbar is also electrically connected to the rectifier module and the inverter module, and can also be used to pass current into and output current to the rectifier module and the inverter module, thereby ensuring the effect of power supply and output to the lower-level high-power components.

[0043] See Figure 1 Viewed from the left side of the inverter assembly, the inverter is divided into an upper structure 1 and a lower structure 2. Upper structure 1 is the low-voltage layer, and lower structure 2 is the high-voltage layer. Upper structure 1 is the controller mounting layer, housing the inverter main control board 11, terminal block 18, switching power supply board 113, filter board 115, discharge resistor board 116, and voltage sampling board (sampling board 114). Lower structure 2 is the power device mounting layer, housing the heat sink 21, rectifier module 22, inverter module 23, busbar 27, capacitor 28, and electrical connectors. The lower layer's incoming copper plate assembly 24 is the input terminal, and the outgoing copper plate assembly 25 is the output terminal. The upper layer is an auxiliary heat dissipation layer, and the lower layer is the main heat dissipation layer; these form the internal circulating dehumidification and heat dissipation duct of the inverter assembly under enclosed conditions.

[0044] In some implementations... It also includes a copper sheet support sheet 26, on which the incoming copper sheet assembly 24 and the outgoing copper sheet assembly 25 are respectively fixed. There are multiple incoming copper sheet assemblies 24 and multiple outgoing copper sheet assemblies 25.

[0045] This invention further utilizes the aforementioned copper sheet support sheet metal to separately fix the inlet copper sheet assembly and the outlet copper sheet assembly. The copper sheet support sheet metal is fixed to the inverter housing, and multiple inlet copper sheet assemblies and multiple outlet copper sheet assemblies can provide power supply.

[0046] In some implementations... It also includes a capacitor support sheet metal 29 and a main cooling fan 216. The capacitor 28 is electrically connected to the busbar 27 and is fixedly connected to the capacitor support sheet metal 29. The main cooling fan 216 is arranged opposite to the heat sink 21.

[0047] This utility model also provides support for the capacitor through the aforementioned capacitor support sheet metal. The capacitor is electrically connected to the busbar, which provides power to the capacitor. The main cooling fan is positioned opposite the heat sink, which dissipates heat from the heat sink. The heat sink dissipates heat from the power components below, forming a layered heat dissipation effect and improving the heat dissipation efficiency of the frequency converter.

[0048] See Figure 4-5In this utility model, the lower modules of the frequency converter are connected by connecting support sheet metal 13, support sheet metal 16, radiator support sheet metal 36, partition support sheet metal 37 and grounding copper sheet support sheet metal 38. The inlet copper sheet assembly 24 and the outlet copper sheet assembly 25 are fixed on the copper sheet support sheet metal 26 by insulators.

[0049] See Figure 4 and 6 The lower structure 2 of the frequency converter includes a heat sink 21, a rectifier module 22, an inverter module 23, a busbar 27, a capacitor 28, a capacitor support sheet metal 29, an inlet copper plate assembly 24, an outlet copper plate assembly 25, and a heat sink support sheet metal 36. The rectifier module 22 and the inverter module 23 are bolted to the heat sink 21, which is bolted to the chassis 4. The heat sink 21 is a finned heat sink with module mounting holes for mounting the rectifier module 22 and the inverter module 23. The cooling airflow is provided by the main cooling fan 216; during inverter operation, the fan rapidly rotates, carrying away heat and transferring heat from the power devices to the heat sink. The capacitor module 35 is connected and fixed via the capacitor support sheet metal 29. A round hole is provided at the bottom for capacitor support and grounding. Mounting holes are provided on both sides of the capacitor support sheet metal 29 for bolt fixation to the chassis 4, ensuring capacitor installation stability. The busbar 27 connects the rectifier module 22, the inverter module 23, and the capacitor 28 together using bolts and nuts. The main cooling fan 216 is mounted on the fan mounting sheet metal by bolts, and the fan mounting sheet metal is connected to the chassis 4 by bolts.

[0050] See Figure 5 The inverter's heat dissipation is divided into layers by a flip-up plate 12 (flip-up sheet metal). The lower layer of heat dissipation is the main airflow channel provided by the enclosure itself, which dissipates heat from the power components. The heat sink 21 is preferably 668mm long, 505mm wide, and 185mm high, with a fin thickness of 2mm and a 3mm gap between the fins, forming the heat dissipation channel to remove heat generated by the module. The upper layer of heat dissipation is auxiliary, providing cooling for the control module and other components. The heat dissipation channel is the natural airflow channel of the enclosure itself, with the auxiliary cooling fan 111 removing heat generated by the components.

[0051] This utility model also provides an air compressor, which includes the aforementioned frequency converter assembly.

[0052] The improvement of this utility model lies in: designing a wind-cooled inverter structure that allows components to be mounted on an openable sheet metal part, facilitating maintenance; achieving separation of strong and weak current circuits on two layers to ensure electrical safety; and achieving separation of heat dissipation on two layers to improve heat dissipation efficiency.

[0053] The beneficial effects of this utility model are: 1. The components are mounted on a single, openable sheet metal piece, making installation and maintenance convenient.

[0054] 2. The layout of components separates strong and weak current to ensure electrical safety.

[0055] 3. Layered heat dissipation improves heat dissipation efficiency.

[0056] 4. Eliminate complex wiring to improve installation convenience.

[0057] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A frequency converter assembly, characterized in that: include: The components include a flip plate (12), a frequency converter main control board (11), a rotating component (14), and a connecting support sheet metal (13). The frequency converter main control board (11) is mounted on the flip plate (12), and one side of the flip plate (12) is connected to the connecting support sheet metal (13) via the rotating component (14), so that the flip plate (12) can be flipped relative to the connecting support sheet metal (13).

2. The inverter assembly according to claim 1, characterized in that: It also includes a relay (17), a terminal block (18), and a switching power supply (15). The relay (17), the terminal block (18), and the switching power supply (15) are all disposed on the flip plate (12) and can also rotate around the rotating member (14) together with the flip plate (12).

3. The inverter assembly according to claim 2, characterized in that: It also includes a filter board (115), a switching power supply board (113), a sampling board (114), and a discharge resistor board (116). The filter board (115), the switching power supply board (113), the sampling board (114), and the discharge resistor board (116) are all disposed on a device support plate (117), and the device support plate (117) is disposed on the second side of the flip plate (12). The inverter main control board (11), the relay (17), the terminal block (18), and the switching power supply (15) are all disposed on the first side of the flip plate (12). The first side and the second side are the two opposite sides of the flip plate (12).

4. The inverter assembly according to claim 3, characterized in that: It also includes an auxiliary cooling fan (111), which is located on one side of the flip plate (12) and is opposite to the inverter main control board (11), the relay (17), the terminal block (18), the switching power supply (15), the filter board (115), the switching power supply board (113), the sampling board (114) and the discharge resistor board (116) so as to dissipate heat from the above components.

5. The frequency converter assembly according to claim 1, characterized in that: It also includes a partition (19), the flip plate (12) is located above the partition (19), the upper part of the partition (19) is the upper structure (1) of the frequency converter, which is the weak current layer, and the lower part of the partition (19) is equipped with power devices, which is the lower structure (2) of the frequency converter, which is the strong current layer. The overcurrent of the strong current layer is greater than the overcurrent of the weak current layer.

6. The inverter assembly according to claim 5, characterized in that: The power device includes a rectifier module (22), an inverter module (23), a busbar (27) and a capacitor (28), and also includes a heat sink (21), which is located below the partition (19), and the rectifier module (22) and the inverter module (23) are disposed on the heat sink (21).

7. The frequency converter assembly according to claim 6, characterized in that: The power device also includes an input copper sheet assembly (24) and an output copper sheet assembly (25), the input copper sheet assembly (24) and the output copper sheet assembly (25) are electrically connected to the busbar (27) respectively, and the busbar (27) is electrically connected to the rectifier module (22) and the inverter module (23) respectively.

8. The inverter assembly according to claim 7, characterized in that: It also includes a copper sheet support sheet metal (26), the incoming copper sheet assembly (24) and the outgoing copper sheet assembly (25) are respectively fixed to the copper sheet support sheet metal (26), there are multiple incoming copper sheet assemblies (24) and multiple outgoing copper sheet assemblies (25).

9. The frequency converter assembly according to claim 6, characterized in that: It also includes a capacitor support sheet metal (29) and a main cooling fan (216). The capacitor (28) is electrically connected to the busbar (27). The capacitor (28) is fixedly connected to the capacitor support sheet metal (29). The main cooling fan (216) is arranged opposite to the heat sink (21).

10. An air compressor, characterized in that: Includes the frequency converter assembly according to any one of claims 1-9.

Images