An inverter and a heat dissipation structure thereof

Abstract

This utility model discloses a heat dissipation structure for an inverter, including a housing, in which the inverter is fixedly installed. The housing has heat dissipation grilles on its sides and a through-hole at its bottom. A cooling fan is located at the through-hole to provide air cooling for the inverter inside the housing. The cooling air passes through the inverter and is exhausted through the heat dissipation grilles. This utility model achieves 360° coverage of the inverter by using a housing, providing safety protection and rainproofing. Simultaneously, the cooling fan at the bottom of the housing provides air cooling for the inverter, and the cooling air is exhausted from the heat dissipation grilles on the side of the inverter, creating an outward airflow at the grilles, which prevents external rainwater from entering the housing. Therefore, the above design not only improves heat dissipation but also provides excellent waterproofing and dustproofing.

Description

Technical Field

[0001] This utility model belongs to the field of general machinery manufacturing technology, and specifically relates to an inverter and its heat dissipation structure. Background Technology

[0002] A general-purpose inverter is a power conversion device that converts raw alternating current (AC) or unstable direct current (DC) generated by a general-purpose gasoline engine into stable, clean industrial frequency or variable frequency AC power through power electronic conversion processes such as rectification, filtering, and inversion. It is widely used in outdoor operations, emergency power supply, mobile power vehicles, and power supply in remote areas, providing reliable AC power for various power tools, lighting equipment, household appliances, and even precision instruments.

[0003] Many existing general-purpose inverters suffer from a significant drawback: the lack of a specially designed and structurally complete external casing. This deficiency directly leads to two key problems: 1. Poor heat dissipation performance: core heat-generating components (such as power switching devices) suffer from poor heat dissipation due to the lack of effective airflow guidance and optimized structure, easily leading to localized overheating, decreased efficiency, accelerated device aging, and reduced reliability; 2. Severely inadequate waterproofing: sensitive internal circuits and components are directly exposed to dusty or rainy outdoor environments, easily causing short circuits, corrosion, insulation failure, and other safety hazards, threatening equipment and personal safety. Therefore, existing inverter technologies severely restrict the reliability, safety, and adaptability to complex environments of inverters. Utility Model Content

[0004] To address the aforementioned shortcomings of existing technologies, an inverter and its heat dissipation structure are provided, which solves the problems of poor heat dissipation and waterproofing performance of existing inverters and their heat dissipation structures.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A heat dissipation structure for an inverter includes a housing, in which the inverter is fixedly installed. The side of the housing is provided with a heat dissipation grille, and the bottom of the housing is provided with a through hole. A cooling fan is provided at the through hole to provide air cooling for the inverter inside the housing. The cooling air passes through the inverter and is discharged from the heat dissipation grille.

[0007] With the above structural design, the inverter is 360° enclosed by a shell, which provides safety protection. At the same time, a cooling fan is installed under the shell to cool the inverter, and the cooling air is discharged from the heat dissipation grille on the side of the inverter, forming an outward airflow at the heat dissipation grille, which can prevent external rainwater from entering the shell. Therefore, the above design not only improves the heat dissipation effect, but also has a good waterproof and dustproof effect.

[0008] Preferably, the housing includes an upper cover, a middle frame, and a bottom plate. The side edge of the upper cover extends downward and is fixedly connected to the upper end of the middle frame. The bottom plate is fixed to the lower end of the middle frame and has the through hole.

[0009] With the above structural design, the extension can prevent rainwater from entering the housing from the connection point, thus improving the waterproof effect.

[0010] Preferably, the housing is enclosed by a top cover, a middle frame, and a bottom plate to form a receiving cavity, the inverter is installed in the receiving cavity, and the side of the inverter is fixedly connected to the middle frame.

[0011] Preferably, the cooling fan is built into the receiving cavity, and there is a certain distance between the bottom of the inverter and the base plate to facilitate the installation of the cooling fan. A heat dissipation channel is formed between the inverter, the cooling fan, the middle frame and the top cover, and the cooling air is discharged from the heat dissipation grille.

[0012] With the above structural design, the heat dissipation channel is arranged around the inverter, thereby improving the heat dissipation effect of the inverter by introducing cooling air from the cooling fan. The hot air is discharged from the heat dissipation grille to form an airflow, which can prevent rainwater from entering the housing through the heat dissipation grille and further achieve a waterproof effect.

[0013] Preferably, the cooling fan is externally located at the through hole at the lower end of the housing.

[0014] Preferably, a protective mesh is provided at the air inlet below the cooling fan.

[0015] Preferably, the housing is provided with mounting ears to facilitate connection and fixation with an external structure, and the housing is provided with a waterproof socket.

[0016] To achieve the above objectives, this utility model also provides an inverter that includes the aforementioned inverter heat dissipation structure.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This utility model, by setting a shell on the outside of the inverter, can achieve 360° full coverage of the inverter, which can provide vertical rain protection and ensure the waterproof and protective effect of the inverter;

[0019] 2. This utility model utilizes a cooling fan installed at the bottom of the casing to provide air cooling for the inverter. A heat dissipation channel is formed between the inverter, the cooling fan, the middle frame, and the top cover. Cooling air is exhausted from the heat dissipation grilles on the side of the inverter, creating an outward airflow at the grilles, which prevents external rainwater from entering the casing. Therefore, the above structure improves the inverter's heat dissipation effect and further enhances its waterproof and dustproof properties. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0021] Figure 2 This is a structural schematic diagram of Embodiment 1 from another angle;

[0022] Figure 3 This is a schematic diagram of internal heat dissipation under the cross-sectional view of Embodiment 1;

[0023] Figure 4 This is a structural schematic diagram of Embodiment 2 of the present invention;

[0024] Figure 5 This is a schematic diagram of internal heat dissipation under the cross-sectional view of Embodiment 2.

[0025] In the picture:

[0026] 1. Housing, 1a. Top cover, 11a. Extension, 1b. Middle frame, 1c. Base plate, 1d. Receiving cavity, 1e. Mounting ear, 2. Inverter, 3. Heat dissipation grille, 4. Through hole, 5. Heat dissipation fan, 5a. Detailed Implementation

[0027] To explain in detail the technical content, structural features, objectives and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0028] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., 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, and 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. Therefore, they should not be construed as limitations on this utility model.

[0029] Example 1

[0030] Please see Figures 1 to 3A heat dissipation structure for an inverter includes a housing 1, with an inverter 2 fixedly mounted inside the housing 1. The housing 1 is made of sheet metal, enclosing the inverter 2 inside, providing safety protection and rainproofing. The housing 1 has heat dissipation grilles 3 on its sides and through holes 4 at its bottom, with a cooling fan 5 positioned at the through holes 4 to provide air cooling for the inverter 2 inside the housing 1. The cooling air passes through the inverter 2 and exits through the heat dissipation grilles 3. A protective mesh 5a is provided at the air inlet below the cooling fan 5. In this invention, the cooling fan 5 introduces cooling air into the housing 1, expelling the hot air generated by the inverter 2 from the housing 1 to achieve cooling and temperature reduction. The hot air is then discharged through the heat dissipation grilles 3, forming an airflow. Simultaneously, it prevents rainwater and dust from entering the housing 1 through the heat dissipation grilles 3, further providing waterproofing and dustproofing.

[0031] Specifically, the housing 1 includes an upper cover 1a, a middle frame 1b, and a bottom plate 1c. The side edge of the upper cover 1a extends downward to form a portion 11a, and the upper cover 1a is fixedly connected to the upper end of the middle frame 1b. The bottom plate 1c is fixed to the lower end of the middle frame 1b, and the bottom plate 1c has the through hole 4. In this embodiment, the upper cover 1a, the bottom plate 1c, and the middle frame 1b are connected by screws. The housing 1 is enclosed by the upper cover 1a, the middle frame 1b, and the bottom plate 1c to form a receiving cavity 1d. The inverter 2 is installed in the receiving cavity 1d, and the inverter 2 is located slightly above the receiving cavity 1d. A space is reserved below to facilitate the installation of the cooling fan 5. The side of the inverter 2 is fixedly connected to the middle frame 1b. In this embodiment, two sides of the inverter 2 are connected to the middle frame 1b by screws, and the other two sides are spaced a certain distance from the middle frame 1b to form a channel to facilitate the flow of cooling air.

[0032] Furthermore, the cooling fan 5 is built into the receiving cavity 1d, and a certain distance is left between the bottom of the inverter 2 and the base plate 1c to facilitate the installation of the cooling fan 5. A heat dissipation channel is formed between the inverter 2, the cooling fan 5, the middle frame 1b, and the top cover 1a, and the cooling air is discharged from the heat dissipation grille 3, achieving full-coverage cooling of the inverter 2. In this embodiment, the built-in cooling fan 5 is a DC fan.

[0033] Furthermore, the housing 1 is provided with mounting ears 1e for easy connection and fixation with external structures, and the housing 1 is provided with a waterproof socket.

[0034] Example 2

[0035] Please see Figure 4 and Figure 5This embodiment has the same housing 1 structure as Embodiment 1, the difference being that the cooling fan 5 is externally located at the through hole 4 at the lower end of the housing 1. In this embodiment, the external cooling fan 5 is an AC fan, which can be directly powered by the inverter 2.

[0036] This utility model also provides an inverter that includes the above-described inverter heat dissipation structure.

[0037] The working principle of this utility model is as follows:

[0038] During operation, the cooling fan 5 is turned on, introducing cooling air into the housing cavity 1d. The air then cools the inverter 2 through the heat dissipation channel. Simultaneously, hot air is exhausted from the heat dissipation grille 3, creating an outward airflow at the grille 3. This prevents external rainwater from entering the housing 1 through the heat dissipation grille 3. Therefore, this invention, through the design of the housing 1, provides waterproofing and protection. Furthermore, the internal heat dissipation channel enhances the heat dissipation effect of the inverter 2.

[0039] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A heat dissipation structure for an inverter, characterized in that, Includes a housing (1), an inverter (2) is fixedly installed inside the housing (1), the side of the housing (1) is provided with a heat dissipation grille (3), the bottom of the housing (1) is provided with a through hole (4), and a heat dissipation fan (5) is provided at the position of the through hole (4) to perform air cooling heat dissipation on the inverter (2) inside the housing (1), and the cooling air is discharged from the heat dissipation grille (3) after passing through the inverter (2).

2. The heat dissipation structure of an inverter as described in claim 1, characterized in that, The housing (1) includes an upper cover (1a), a middle frame (1b) and a bottom plate (1c). The side edge of the upper cover (1a) forms an extension (11a) downward, and the upper cover (1a) is fixedly connected to the upper end of the middle frame (1b). The bottom plate (1c) is fixed to the lower end of the middle frame (1b), and the bottom plate (1c) has the through hole (4).

3. The heat dissipation structure of an inverter as described in claim 2, characterized in that, The housing (1) is enclosed by an upper cover (1a), a middle frame (1b) and a bottom plate (1c) to form a receiving cavity (1d). The inverter (2) is installed in the receiving cavity (1d) and the side of the inverter (2) is fixedly connected to the middle frame (1b).

4. The heat dissipation structure of an inverter as described in claim 3, characterized in that, The cooling fan (5) is built into the receiving cavity (1d), and the bottom of the inverter (2) is spaced a certain distance from the base plate (1c) to facilitate the installation of the cooling fan (5). A heat dissipation channel is formed between the inverter (2), the cooling fan (5), the middle frame (1b) and the top cover (1a), and the cooling air is discharged from the heat dissipation grille (3).

5. The heat dissipation structure of an inverter as described in claim 3, characterized in that, The cooling fan (5) is externally located at the through hole (4) at the lower end of the housing (1).

6. The heat dissipation structure of an inverter as described in claim 2, characterized in that, A protective mesh (5a) is provided at the air inlet below the cooling fan (5).

7. The heat dissipation structure of an inverter as described in claim 1, characterized in that, The housing (1) is provided with mounting ears (1e) for easy connection and fixation with external structures, and the housing (1) is provided with a waterproof socket.

8. An inverter, characterized in that, The inverter heat dissipation structure includes any one of claims 1-7.

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