A heat dissipation structure of a power box of a range hood and the range hood

Abstract

The utility model relates to a kind of heat dissipation structure and range hood of range hood power supply box, the power supply box includes shell, circuit board, sealing cover and heat dissipation part, sealing cover is located in the inside of shell and is surrounded with shell to form installation cavity, circuit board is placed in installation cavity and has wiring end extending out installation cavity, the heat dissipation part has first end and second end, the first end is in contact with circuit board and heat conduction, the second end extends out installation cavity, second end is flush with the mounting surface of shell or protrudes from the mounting surface of shell. By increasing heat dissipation part, the first end of heat dissipation part is in contact with high-power element of circuit board and heat conduction, heat is dissipated outward through second end, which can effectively solve the problem of circuit board heat accumulation and difficult heat dissipation.

Description

Technical Field

[0001] This utility model relates to a heat dissipation structure for a range hood power supply box and a range hood. Background Technology

[0002] The power supply box is an important component of the range hood. It is usually installed on the casing of the range hood to facilitate maintenance and replacement during subsequent use. In order to prevent oil fumes and water vapor from entering the power supply box, the circuit board inside the box is usually sealed. Although this effectively solves the problem of water vapor entering, the heat released by the high-power components on the circuit board is difficult to dissipate, resulting in serious heat accumulation on the circuit board. If the range hood is turned on for a long time or multiple functions are used at the same time, the circuit board is prone to burnout.

[0003] Therefore, it is necessary to make further improvements. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned problems. We provide a heat dissipation structure for the power supply box of a range hood and a range hood that solves the problem of heat accumulation and burnout of the circuit board.

[0005] To achieve the above objectives, this utility model provides a heat dissipation structure for a range hood power supply box. The power supply box includes a shell, a circuit board, a sealing cover, and a heat dissipation part. The sealing cover is located inside the shell and forms an installation cavity with the shell. The circuit board is placed in the installation cavity and has a wiring terminal extending out of the installation cavity. The heat dissipation part has a first end and a second end. The first end contacts the circuit board for heat conduction, and the second end extends out of the installation cavity. The second end is flush with or protrudes from the installation surface of the shell.

[0006] In one or more embodiments, the connection between the sealing cap and the housing has a reserved opening for the wiring terminals of the circuit board to extend out, the reserved opening being in close contact with the circuit board extending out of the mounting cavity.

[0007] In one or more embodiments, the sealing cap has an installation opening for the first end to extend into, the size of the installation opening matching the size of the second end, and the second end being in close contact with the installation opening.

[0008] In one or more embodiments, the second end is fixed to the sealing cover by a first screw, and the sealing cover is fixed to the outer casing by a second screw.

[0009] In one or more embodiments, the heat dissipation part is an aluminum alloy heat sink.

[0010] In one or more embodiments, the housing is provided with mounting holes for mounting and fixing.

[0011] This application also provides a range hood, which has the heat dissipation structure of the power box in the above solution, the outer shell is installed on the surface of the range hood housing, and the second end is in contact with the housing of the range hood for heat conduction.

[0012] Compared with the prior art, the present invention has the following advantages: by adding a heat dissipation part, the first end of the heat dissipation part contacts the high-power components of the circuit board to conduct heat, and the second end dissipates the heat outward, which can effectively solve the problem of heat accumulation and difficulty in heat dissipation of the circuit board. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the power supply box according to an embodiment of the present utility model;

[0014] Figure 2 for Figure 1 Exploded view. Detailed Implementation

[0015] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0016] Please refer to Figure 1-2 This utility model provides a heat dissipation structure for a range hood power supply box. The power supply box includes a shell 1, a circuit board 2, a sealing cover 3, and a heat dissipation part 4. The sealing cover 3 is located inside the shell 1 and forms an installation cavity with the shell. The circuit board 2 is placed in the installation cavity and has a terminal 21 extending out of the installation cavity. The terminal extends out for connecting a power cord. All power components in the circuit board are located in the installation cavity. The heat dissipation part 4 has a first end 41 and a second end 42. The first end 41 contacts the circuit board 2 for heat conduction, and the second end 42 extends out of the installation cavity. The second end 42 is flush with or protrudes from the installation surface of the shell 1. The heat dissipation part dissipates the heat from the circuit board, preventing heat accumulation in the circuit board and the installation cavity. Specifically, the first end preferably contacts the high-power components on the circuit board. The heat dissipation part 4 is specifically an alloy heat sink.

[0017] The connection between the sealing cover 3 and the outer shell 1 has a reserved opening for the wiring terminal 21 of the circuit board 2 to extend out. The reserved opening is in close contact with the circuit board 2 extending out of the mounting cavity, thereby playing a sealing role and preventing external water vapor and oil fumes from entering the mounting cavity.

[0018] The sealing cover 3 has an installation port 5 for the first end 41 to extend into. The size of the installation port 5 matches the size of the second end 42, and the second end 42 is in close contact with the installation port 5, thereby achieving a sealing effect and preventing external water vapor and oil fumes from entering the installation cavity.

[0019] The second end 42 is fixed to the sealing cover 3 by the first screw, and the sealing cover 3 is fixed to the outer shell 1 by the second screw. The screw fixing has the advantages of easy installation and disassembly.

[0020] The outer casing 1 is provided with mounting holes 6 for mounting and fixing. The mounting holes are for screws to pass through so as to fix the outer casing to the housing of the range hood.

[0021] This application also provides a range hood, which has the heat dissipation structure of the power box in the above solution. The outer shell 1 is installed on the surface of the range hood housing, and the second end 42 contacts the housing of the range hood for heat conduction, thereby guiding heat to the housing of the range hood and using the housing of the range hood for heat dissipation to improve heat dissipation efficiency.

[0022] The above description is only a preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present utility model should be included in the protection scope recorded in the claims.

Claims

1. A heat dissipation structure for a range hood power supply box, characterized in that: The power supply box includes a housing (1), a circuit board (2), a sealing cover (3), and a heat dissipation part (4). The sealing cover (3) is located inside the housing (1) and forms a mounting cavity with the housing. The circuit board (2) is placed in the mounting cavity and has a terminal (21) extending out of the mounting cavity. The heat dissipation part (4) has a first end (41) and a second end (42). The first end (41) contacts the circuit board (2) for heat conduction. The second end (42) extends out of the mounting cavity and is flush with or protrudes from the mounting surface of the housing (1).

2. The heat dissipation structure of the power supply box for a range hood according to claim 1, characterized in that: The connection between the sealing cover (3) and the outer shell (1) has a reserved opening for the wiring terminal (21) of the circuit board (2) to extend out, and the reserved opening is in close contact with the circuit board (2) extending out of the mounting cavity.

3. The heat dissipation structure of the power supply box for a range hood according to claim 1, characterized in that: The sealing cap (3) has an installation port (5) for the first end (41) to extend into. The size of the installation port (5) matches the size of the second end (42), and the second end (42) is in close contact with the installation port (5).

4. The heat dissipation structure of the power supply box for a range hood according to claim 3, characterized in that: The second end (42) is fixed to the sealing cover (3) by the first screw, and the sealing cover (3) is fixed to the outer shell (1) by the second screw.

5. The heat dissipation structure of the power supply box for a range hood according to claim 1, characterized in that: The heat dissipation part (4) is an aluminum alloy heat sink.

6. The heat dissipation structure of the power supply box for a range hood according to claim 1, characterized in that: The outer casing (1) is provided with mounting holes (6) for installation and fixing.

7. A range hood, characterized in that: The range hood has the heat dissipation structure of the power box as described in any one of claims 1-6, the outer shell (1) is installed on the surface of the range hood housing, and the second end (42) is in contact with the range hood housing for heat conduction.

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