Inverter

Abstract

The utility model discloses an inverter. The inverter comprises a box body, a control mainboard, an inversion inductance assembly, a common mode inductance assembly and a heat dissipation assembly. Wherein a first cavity, a second cavity, a mounting plate, a first air opening and a second air opening are formed in the box body, the first cavity and the second cavity are separated through the mounting plate, and the first air opening and the second air opening are formed in the two opposite side walls of the second cavity; the control mainboard is arranged in the first cavity and mounted on the mounting plate; the inversion inductance assembly is located on the side, close to the second air opening, of the control mainboard, and the common mode inductance assembly is located on the side, close to the first air opening, of the control mainboard. The heat dissipation assembly is arranged in the second cavity and located between the inversion inductance assembly and the common mode inductance assembly. The heat dissipation assembly is provided with a heat dissipation channel in the direction from the common mode inductance assembly to the inversion inductance assembly. According to the inverter, the problem of low heat dissipation efficiency caused by unreasonable layout of the heat dissipation device in the inverter in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of inverters, and more specifically, to an inverter. Background Art

[0002] At present, a large amount of heat generated by the internal power board of the inverter and heat dissipation components such as the inductor assembly during operation is mainly dissipated through the corresponding heat dissipation devices of each component, or through the heat dissipation path through the heat dissipation devices of each heat generating component. The method of dissipating heat through the separately provided heat dissipation devices results in an impact on the heat dissipation effect between the heat dissipation devices, with low overall heat dissipation efficiency, high cost. The method of dissipating heat through the heat dissipation path through the heat dissipation devices of each easily heat generating component has an unreasonable layout of the heat dissipation path, resulting in a low overall heat dissipation efficiency of the inverter. Summary of the Utility Model

[0003] The main purpose of the utility model is to provide an inverter to at least solve the problem of unreasonable layout of the heat dissipation device of the inverter, resulting in low heat dissipation efficiency.

[0004] According to one aspect of the utility model, an inverter is provided, including:

[0005] A box body, in which a first cavity, a second cavity, a mounting plate, a first air outlet and a second air outlet are arranged. The first cavity and the second cavity are separated by the mounting plate, and the first air outlet and the second air outlet are arranged on opposite side walls of the second cavity;

[0006] A control main board, which is arranged in the first cavity and mounted on the mounting plate;

[0007] An inverter inductor assembly, which is mounted on the mounting plate and passes through the second cavity from the first cavity, and the inverter inductor assembly is located on the side of the control main board close to the second air outlet;

[0008] A common mode inductor assembly, which is mounted on the mounting plate and passes through the second cavity from the first cavity, and the common mode inductor assembly is located on the side of the control main board close to the first air outlet;

[0009] A heat dissipation component, which is arranged in the second cavity and located between the inverter inductor assembly and the common mode inductor assembly, and a heat dissipation channel extending in the direction from the common mode inductor assembly to the inverter inductor assembly is arranged on the heat dissipation component.

[0010] Further, the heat dissipation component includes a fan part and a radiator. The fan part is arranged between the common mode inductor assembly and the inverter inductor assembly, and the radiator is arranged between the fan part and the inverter inductor assembly.

[0011] Further, the radiator includes a base and a plurality of heat dissipation fins spaced apart on the base, and a heat dissipation channel is formed between two adjacent heat dissipation fins.

[0012] Further, a radiator cover plate and a fan cover plate are further disposed in the second cavity. The radiator cover plate covers the radiator, and the fan cover plate covers the fan member.

[0013] Further, a first air duct is provided on a side of the fan cover plate close to the first air inlet, a second air duct is provided on a side of the fan cover plate close to the radiator, a third air duct is provided on a side of the radiator cover plate close to the first air duct, and a fourth air duct is provided on a side of the radiator cover plate close to the second air outlet;

[0014] Wherein, along the direction from the fan member to the radiator, the cross-sectional area of the first air duct gradually becomes smaller, the cross-sectional area of the third air duct gradually becomes smaller, and the cross-sectional area of the fourth air duct gradually becomes larger.

[0015] Further, the inverter inductor assembly includes an inverter inductor coil and an inverter inductor housing. The inverter inductor coil is installed on the control main board and passes through the first cavity and the second cavity. The inverter inductor housing is hermetically installed on the mounting plate and is located in the second cavity to cover the inverter inductor coil;

[0016] The common mode inductor assembly includes a common mode inductor coil and a common mode inductor housing. The common mode inductor coil is installed on the control main board and passes through the first cavity and the second cavity. The common mode inductor housing is hermetically installed on the mounting plate and is located in the second cavity to cover the common mode inductor coil.

[0017] Further, the inverter inductor housing is provided with a plurality of the heat dissipation channels, the common mode inductor housing is provided with a plurality of the heat dissipation channels, and the extending direction of the heat dissipation channels is consistent with the extending direction of the heat dissipation channel.

[0018] Further, the inverter inductor assembly includes three inverter inductors, and the three inverter inductors are sequentially arranged along the extending direction of the side of the heat dissipation assembly.

[0019] Further, the fan member includes a mounting frame and a plurality of fans. The mounting frame is detachably disposed in the second cavity, and the plurality of fans are sequentially arranged along the length direction of the mounting frame.

[0020] Further, filter nets are provided at both the first air inlet and the second air outlet.

[0021] In the present utility model, by arranging the inverter inductor assembly and the common-mode inductor assembly on both sides of the control main board respectively and setting a heat dissipation assembly between them, an efficient heat dissipation channel is formed. This layout not only avoids the mutual interference between heat sources but also ensures the smooth flow of air, greatly improving the heat dissipation efficiency. The heat dissipation assembly consists of a fan part and a radiator. The fan part is responsible for guiding the air flow, and the multiple heat dissipation fins on the radiator increase the heat exchange area. The two work together to enable the heat to be quickly transferred from the inductor assembly to the air. The design of the heat dissipation channel between the heat dissipation fins further enhances the heat dissipation effect. By setting an air inlet channel and an air outlet channel on both sides of the fan cover plate and the radiator cover plate respectively, the flow direction of the air flow can be guided, improving the heat dissipation efficiency. Both the inverter inductor assembly and the common-mode inductor assembly adopt a sealed inductor shell design, which not only protects the inductor coil from the external environment but also realizes good heat conduction through the heat dissipation channels on the inductor shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present utility model and form a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0023] Figure 1 is a three-dimensional structure diagram of the inverter disclosed in the embodiment of the present utility model;

[0024] Figure 2 is a schematic rear view of the radiator cover plate of the inverter disclosed in the embodiment of the present utility model when installed;

[0025] Figure 3 is a schematic rear view of the radiator cover plate of the inverter disclosed in the embodiment of the present utility model when not installed;

[0026] Figure 4 is an exploded view of the inverter disclosed in the embodiment of the present utility model.

[0027] Among them, the above-mentioned drawings include the following reference numerals:

[0028] 10. Cabinet; 11. First cavity; 111. First cover plate; 12. Second cavity; 121. Second cover plate; 13. Mounting plate; 14. First air outlet; 15. Second air outlet; 20. Control main board; 30. Inverter inductor assembly; 31. Inverter inductor housing; 3141. Heat dissipation flow path; 40. Common mode inductor assembly; 41. Common mode inductor housing; 50. Heat dissipation assembly; 501. Heat dissipation channel; 51. Fan component; 510. Fan cover plate; 5101. First air duct; 5102. Second air duct; 511. Mounting frame; 512. Fan; 52. Radiator; 521. Base; 522. Heat dissipation fins; 520. Radiator cover plate; 5201. Third air duct; 5202. Fourth air duct. Detailed implementation manners

[0029] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0030] It should be noted that the terms used herein are only for describing the specific implementation manners and are not intended to limit the exemplary embodiments according to the present utility model. As used herein, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprise" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0031] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps described in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that, for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings. The internal power board of the inverter, inductor components, and other heat-generating components mainly dissipate heat through the corresponding heat dissipation devices of each component during operation, or dissipate heat through the heat dissipation devices of each heat-generating component along the heat dissipation path. When separate heat dissipation devices are provided, the heat dissipation effects of the heat dissipation devices will affect each other, resulting in low overall heat dissipation efficiency and high cost. When dissipating heat through the heat dissipation devices of each heat-generating component along the heat dissipation path, the layout of the heat dissipation path is unreasonable and the overall heat dissipation efficiency is relatively low.

[0032] As introduced in the background art, the layout of the heat dissipation path corresponding to the heat dissipation device of the inverter in the prior art is unreasonable, resulting in a relatively low overall heat dissipation efficiency of the inverter. Therefore, the present application provides an inverter. By arranging a heat dissipation component between the inverter inductance component and the common mode inductance component, and the heat dissipation component is provided with a heat dissipation channel in the direction from the common mode inductance component to the inverter inductance component, the heat dissipation path formed by the heat dissipation channel is relatively reasonable. The heat dissipation path sequentially passes through the common mode inductance component, the control main board and the inverter inductance component, and the overall heat dissipation efficiency is high. The inverter of the present utility model will be introduced and described in detail below with reference to the drawings.

[0033] See Figures 1 to 4 As shown, according to an embodiment of the present application, an inverter is provided, which includes a box body 10, a control main board 20, an inverter inductance component 30, a common mode inductance component 40 and a heat dissipation component 50. A first cavity 11, a second cavity 12, a mounting plate 13, a first air outlet 14 and a second air outlet 15 are arranged in the box body 10. The first cavity 11 and the second cavity 12 are separated by the mounting plate 13. The first air outlet 14 and the second air outlet 15 are arranged on opposite side walls of the second cavity 12. The control main board 20 is arranged in the first cavity 11 and mounted on the mounting plate 13. The inverter inductance component 30 is mounted on the mounting plate 13 and penetrates from the first cavity 11 into the second cavity 12, and the inverter inductance component 30 is located on the side of the control main board 20 close to the second air outlet 15. The common mode inductance component 40 is mounted on the mounting plate 13 and penetrates from the first cavity 11 into the second cavity 12, and the common mode inductance component 40 is located on the side of the control main board 20 close to the first air outlet 14. The heat dissipation component 50 is arranged in the second cavity 12 and located between the inverter inductance component 30 and the common mode inductance component 40, and a heat dissipation channel 501 extending in the direction from the common mode inductance component 40 to the inverter inductance component 30 is arranged on the heat dissipation component 50.

[0034] Specifically, the inverter is provided with a first cover plate 111 covering the first cavity 11. The first cavity 11 is made into a sealed cavity through the first box body cover plate to ensure the waterproof performance of the inverter, prevent external pollutants from entering the first cavity 11 and damaging the electronic components in the first cavity 11, and improve the safety of the inverter.

[0035] Furthermore, the heat dissipation component 50 of this embodiment includes a fan member 51 and a radiator 52. The fan member 51 is disposed between the common mode inductance component 40 and the inverter inductance component 30, and the radiator 52 is disposed between the fan member 51 and the inverter inductance component 30. In this embodiment, by disposing the fan member 51 of the heat dissipation component 50 between the common mode inductance component 40 and the inverter inductance component 30, and disposing the radiator 52 of the heat dissipation component 50 between the fan member 51 and the inverter inductance component 30, when the fan member 51 sucks cold air from the first air outlet 14, it will first pass through the common mode inductance component 40 to dissipate heat from the common mode inductance component 40, and then be blown by the fan member 51 towards the radiator 52 to dissipate heat from the control main board 20, and finally be blown by the radiator 52 towards the inverter inductance component 30 to dissipate heat from the inverter inductance component 30, forming an effective air flow path from the first air outlet 14 to the second air outlet 15, ensuring efficient transfer and dissipation of heat, and improving the heat dissipation efficiency of the inverter.

[0036] It can be understood that the fan member 51 in this embodiment has two operating states: forward rotation and reverse rotation. When the fan member 51 is in different operating states, the air flow direction in the second cavity 12 is different. For example, when the fan member 51 rotates forward, the air flow direction in the second cavity 12 is from the first air outlet 14 to the second air outlet 15. At this time, the first air outlet 14 is the air inlet, and the second air outlet 15 is the air outlet, and the air flow blows from the first air outlet 14 to the second air outlet 15, and can dissipate heat from the common mode inductance component 40, the radiator 52, and the inverter inductance component 30 in sequence. When the fan member 51 rotates in reverse, the air flow direction in the second cavity 12 is from the second air outlet 15 to the first air outlet 14. At this time, the second air outlet 15 is the air inlet, and the first air outlet 14 is the air outlet, and the air flow blows from the second air outlet 15 to the first air outlet 14, which can not only dissipate heat from the inverter inductance component 30, the radiator 52, and the common mode inductance component 40 in sequence, but also dust the second cavity 12.

[0037] Specifically, the radiator 52 includes a base 521 and a plurality of heat dissipation fins 522 spaced apart on the base 521. A heat dissipation channel 501 is formed between two adjacent heat dissipation fins 522. By arranging the heat dissipation fins 522 at intervals and forming the heat dissipation channel 501 therebetween, the flow path of the air flow on the radiator 52 is optimized, so that the air flow can pass through the heat dissipation channel 501 more smoothly and make full contact with the heat dissipation fins 522. Since the radiator 52 is located at the position of the control main board 20, the heat dissipation area of the control main board 20 is increased, thereby improving the heat dissipation efficiency of the control main board 20.

[0038] Furthermore, a radiator cover plate 520 and a fan cover plate 510 are also disposed in the second cavity 12. The radiator cover plate 520 covers the radiator 52, and the fan cover plate 510 covers the fan member 51. Among them, a first air duct 5101 is provided on the side of the fan cover plate 510 close to the first air inlet 14, a second air duct 5102 is provided on the side of the fan cover plate 510 close to the radiator 52, a third air duct 5201 is provided on the side of the radiator cover plate 520 close to the first air duct 5101, and a fourth air duct 5202 is provided on the side of the radiator cover plate 520 close to the second air inlet 15; among them, along the direction from the fan member 51 to the radiator 52, the cross-sectional area of the first air duct 5101 gradually decreases, the cross-sectional area of the third air duct 5201 gradually decreases, and the cross-sectional area of the fourth air duct 5202 gradually increases.

[0039] In this embodiment, the first air duct 5101 on the side of the fan cover plate 510 close to the first air inlet 14 can effectively guide the cold air to enter from the first air inlet 14, and after being accelerated by the fan member 51, it is directly blown to the radiator 52 through the second air duct 5102, which can ensure that the cold air efficiently dissipates heat from the heat-generating components in the second cavity 12. Through the third air duct 5201 on the radiator cover plate 520, the cross-sectional area of the third air duct 5201 gradually decreases along the direction from the fan member 51 to the radiator 52, which can enhance the air pressure and promote the air aggregation effect, so that more air can be accurately blown to the core area of the radiator 52, improving the heat conversion efficiency. At the same time, the first air duct 5101 on the side of the fan cover plate 510 close to the first air inlet 14 gradually decreases along the direction from the fan member 51 to the radiator 52, which can allow more wind to enter the fan member 51, improving the operating efficiency of the fan member and further improving the heat dissipation effect. The cross-sectional area of the third air duct on the side of the radiator cover plate 520 close to the second air duct 5102 gradually decreases along the direction from the fan member 51 to the radiator 52, which can allow more air flow blown by the fan member 51 to pass through the radiator 52, improving the heat dissipation effect of the radiator 52. The cross-sectional area of the fourth air duct 5202 on the side of the radiator cover plate 520 close to the second air inlet 15 gradually increases along the direction from the fan member 51 to the radiator 52, which helps the smooth discharge of hot air, reduces the air flow resistance, and further improves the heat dissipation effect.

[0040] Further, the inverter inductance component 30 includes an inverter inductance coil (not shown in the figure) and an inverter inductance housing 31. The inverter inductance coil is installed on the control main board 20 and passes through the first cavity 11 and the second cavity 12. The inverter inductance housing 31 is hermetically installed on the mounting plate 13 and is located in the second cavity 12 to cover the inverter inductance coil. The common-mode inductance component 40 includes a common-mode inductance coil (not shown in the figure) and a common-mode inductance housing 41. The common-mode inductance coil is installed on the control main board 20 and passes through the first cavity 11 and the second cavity 12. The common-mode inductance housing 41 is hermetically installed on the mounting plate 13 and is located in the second cavity 12 to cover the common-mode inductance coil. The inverter inductance housing 31 and the common-mode inductance housing 41 hermetically install the inverter inductance coil and the common-mode inductance coil protruding into the second cavity 12, effectively isolating the direct contact between the inverter inductance coil, the common-mode inductance coil and the external environment, preventing external liquid and other pollutants from entering the inverter through the positions of the inverter inductance component 30 and the common-mode inductance component 40, ensuring the waterproof performance of the inverter, and improving the safety of the inverter. The inverter inductance housing 31 and the common-mode inductance housing 41 are respectively installed on the mounting plate 13 and are located in the second cavity 12. The inverter inductance housing 31 and the common-mode inductance housing 41 can receive the airflow of the heat dissipation channel 501 in the second cavity 12 to dissipate heat from the inverter inductance coil and the common-mode inductance coil, and can improve the heat dissipation efficiency of the inverter on the premise of ensuring a more reasonable layout inside the inverter.

[0041] Specifically, the inverter inductance housing 31 is provided with a plurality of heat dissipation channels 3141, and the common-mode inductance housing 41 is provided with a plurality of heat dissipation channels 3141. The extending direction of the heat dissipation channels 3141 is the same as the extending direction of the heat dissipation channel 501. By respectively providing a plurality of heat dissipation channels 3141 on the inverter inductance housing 31 and the common-mode inductance housing 41, and the extending direction of the heat dissipation channels 3141 is the same as the extending direction of the heat dissipation channel 501, the heat dissipation capacity of the inverter inductance component 30 and the common-mode inductance component 40 is enhanced, the heat dissipation surface area of the inverter inductance component 30 and the common-mode inductance component 40 is increased, and the heat of the inverter inductance component 30 and the common-mode inductance component 40 can be effectively dissipated to the external environment. The unity of the extending direction of the heat dissipation channels 3141 and the heat dissipation channel 501 ensures the smooth flow of the airflow, avoids the problem of reduced heat dissipation efficiency caused by airflow disorder, and improves the overall heat dissipation efficiency.

[0042] Further, the inverter inductance component 30 includes three inverter inductances, and the three inverter inductances are sequentially arranged along the extending direction of the side of the heat dissipation component 50. Arranging the three inverter inductances sequentially along the extending direction of the side of the heat dissipation component 50 helps to reduce the mutual influence between the inverter inductances and ensures the stability and reliability of the inverter.

[0043] Further, the fan unit 51 includes a mounting frame 511 and a plurality of fans 512. The mounting frame 511 is detachably disposed in the second cavity 12, and the plurality of fans 512 are sequentially arranged along the length direction of the mounting frame 511. By means of the mounting frame 511 detachably disposed in the second cavity 12, the fan unit 51 can be easily installed and disassembled when needed, facilitating the maintenance and replacement of the plurality of fans 512 disposed on the mounting frame 511. While ensuring the efficient heat dissipation of the inverter, it reduces the impact on the overall heat dissipation performance of the inverter caused by the failure of a single fan 512. The sequential arrangement of the plurality of fans 512 along the mounting frame 511 ensures the uniform distribution and efficient flow of air, improving the heat dissipation efficiency.

[0044] Further, filter nets are provided at both the first air outlet 14 and the second air outlet 15. In the inverter of this embodiment, a second cover plate 121 covering the second cavity 12 is provided. Therefore, by providing filter nets at the first air outlet 14 and the second air outlet 15 respectively, it can ensure that cold air enters the inverter through the first air outlet 14, and while dissipating the internal heat through the second air outlet 15, the filter nets can effectively block external pollutants such as dust and impurities from entering the interior of the inverter, and can extend the service life of the components inside the inverter. The filter nets can also slow down the flow rate of the air to a certain extent, making the air flow more uniform and stable when passing through the heat dissipation assembly 50, thereby improving the heat dissipation efficiency.

[0045] For the sake of convenience in description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above" etc. can be used here to describe the spatial position relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the figure for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0046] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of differentiating the corresponding components. Without further statement, the above terms have no special meaning, and thus cannot be construed as a limitation on the protection scope of the present utility model.

[0047] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An inverter, characterized in that: include: A box body (10), wherein a first cavity (11), a second cavity (12), a mounting plate (13), a first air outlet (14) and a second air outlet (15) are arranged in the box body (10), the first cavity (11) and the second cavity (12) are separated by the mounting plate (13), and the first air outlet (14) and the second air outlet (15) are arranged on two opposite side walls of the second cavity (12); A control main board (20), the control main board (20) being arranged in the first cavity (11) and mounted on the mounting plate (13); an inverter inductor component (30), the inverter inductor component (30) being mounted on the mounting plate (13) and passing through the first cavity (11) into the second cavity (12), and the inverter inductor component (30) being located on a side of the control main board (20) close to the second air outlet (15); a common-mode inductor component (40), the common-mode inductor component (40) being mounted on the mounting plate (13) and passing through the first cavity (11) into the second cavity (12), and the common-mode inductor component (40) being located on a side of the control main board (20) close to the first air outlet (14); A heat dissipation component (50), the heat dissipation component (50) being arranged in the second cavity (12) and located between the inverter inductor component (30) and the common mode inductor component (40), and the heat dissipation component (50) being provided with a heat dissipation channel (501) extending in a direction from the common mode inductor component (40) to the inverter inductor component (30).

2. The inverter according to claim 1, characterized in that: The heat dissipation component (50) comprises a fan component (51) and a heat sink (52); the fan component (51) is arranged between the common mode inductor component (40) and the inverter inductor component (30); and the heat sink (52) is arranged between the fan component (51) and the inverter inductor component (30).

3. The inverter according to claim 2, characterized in that: The heat sink (52) comprises a base (521) and a plurality of heat dissipation fins (522) arranged at intervals on the base (521), and a heat dissipation channel (501) is formed between two adjacent heat dissipation fins (522).

4. The inverter according to claim 2, characterized in that: A radiator cover plate (520) and a fan cover plate (510) are also provided in the second cavity (12); the radiator cover plate (520) is covered on the radiator (52), and the fan cover plate (510) is covered on the fan element (51).

5. The inverter according to claim 4, characterized in that: A first air duct (5101) is provided on a side of the fan cover plate (510) close to the first air outlet (14), a second air duct (5102) is provided on a side of the fan cover plate (510) close to the radiator (52), a third air duct (5201) is provided on a side of the radiator cover plate (520) close to the first air duct (5101), and a fourth air duct (5202) is provided on a side of the radiator cover plate (520) close to the second air outlet (15); Among them, along the direction from the fan part (51) to the heat sink (52), the cross-sectional area of ​​the first air duct (5101) gradually decreases, the cross-sectional area of ​​the third air duct (5201) gradually decreases, and the cross-sectional area of ​​the fourth air duct (5202) gradually increases.

6. The inverter according to claim 1, characterized in that: The inverter inductor assembly (30) comprises an inverter inductor coil and an inverter inductor shell (31); the inverter inductor coil is mounted on the control mainboard (20) and passes through the first cavity (11) to the second cavity (12); the inverter inductor shell (31) is sealed and mounted on the mounting plate (13), and is located in the second cavity (12) and covers the inverter inductor coil; The common-mode inductor assembly (40) comprises a common-mode inductor coil and a common-mode inductor shell (41); the common-mode inductor coil is mounted on a control mainboard (20) and passes through a first cavity (11) into a second cavity (12); the common-mode inductor shell (41) is sealed and mounted on the mounting plate (13), and is located in the second cavity (12) and covers the common-mode inductor coil.

7. The inverter according to claim 6, characterized in that: The inverter inductor shell (31) is provided with a plurality of heat dissipation channels (3141), and the common mode inductor shell (41) is provided with a plurality of the heat dissipation channels (3141), and the extension direction of the heat dissipation channels (3141) is consistent with the extension direction of the heat dissipation channel (501).

8. The inverter according to claim 1, characterized in that: The inverter inductor assembly (30) comprises three inverter inductors, and the three inverter inductors are arranged in sequence along the extension direction of the side edge of the heat dissipation assembly (50).

9. The inverter according to claim 2, characterized in that: The fan component (51) comprises a mounting frame (511) and a plurality of fans (512); the mounting frame (511) is detachably arranged in the second cavity (12); and the plurality of fans (512) are arranged in sequence along the length direction of the mounting frame (511).

10. The inverter according to any one of claims 1 to 8, characterized in that: The first air outlet (14) and the second air outlet (15) are both provided with filter screens.

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