Range hood power supply box

Abstract

This application discloses a power supply box for a range hood, comprising a power supply box mounted on the surface of the range hood housing. The power supply box includes a bottom shell, an outer cover, a power board, and a heat sink. The power board is mounted on the bottom shell, and the outer cover covers the power board. The power board has electronic components and wiring terminals. The electronic components include power devices. The heat sink is located between the power devices and the inner wall of the outer cover, and the heat from the power devices is transferred to the outer cover through the heat sink. This utility model's range hood power supply box transfers heat from the power devices to the heat sink through contact between the power devices and the heat sink, and from the heat sink to the outer cover through contact between the heat sink and the outer cover. Finally, the heat is transferred to the range hood housing through contact between the outer cover and the surface of the range hood housing. The large area of ​​the range hood housing facilitates heat dissipation, effectively cooling the power devices and preventing damage to the electronic components inside the power supply box due to overheating. The power supply box has a simple structure, is easy to install, and helps improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, and more specifically to a range hood power supply box. Background Technology

[0002] The power supply box is a key component of a range hood, housing circuit boards, capacitors, and other electronic components. Currently, the power supply box of most range hoods is mounted on the surface of the casing. To prevent grease and water vapor from entering the power supply box and to avoid damage to the circuit boards and electronic components caused by contamination and corrosion, the power supply box is designed to be sealed.

[0003] However, the electronic components on the circuit board include power devices, which generate a lot of heat. Since the power supply box is relatively sealed, heat dissipation is difficult, and the power devices are easily damaged due to excessive temperature. Utility Model Content

[0004] In view of this, the present invention provides a power supply box for a range hood.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a range hood power supply box, comprising a power supply box installed on the surface of the range hood housing, the power supply box comprising: a bottom shell, an outer cover, a power board, and a heat sink; the power board is installed on the bottom shell, and the outer cover covers the power board; the power board is provided with electronic components and wiring parts; the electronic components include power devices; the heat sink is located between the power devices and the inner wall of the outer cover, and the heat of the power devices is transferred to the outer cover through the heat sink.

[0006] In a preferred embodiment of this utility model, the heat sink has a first outer surface and a second outer surface, which are opposite to each other; the first outer surface of the heat sink is in contact with the power device; and the second outer surface of the heat sink is in contact with the inner wall of the outer cover.

[0007] In a preferred embodiment of the present invention, the heat sink has a first outer surface and a second outer surface, which are opposite to each other; a heat-conducting plate is installed on the first outer surface of the heat sink, and the first outer surface of the heat sink is in close contact with the power device through the heat-conducting plate.

[0008] A heat-conducting fin is installed on the second outer surface of the radiator, and the second outer surface of the radiator is in contact with the inner wall of the outer cover through the heat-conducting fin.

[0009] In a preferred embodiment of this utility model, the heat-conducting sheet is a heat-conducting silicone sheet.

[0010] As a preferred embodiment of the present invention, the radiator includes: a main body and a plurality of parallel heat dissipation fins disposed within the main body;

[0011] The main body is composed of a first side plate, a second side plate, a third side plate, and a fourth side plate connected in sequence to form a frame, and the heat sink is perpendicular to the first side plate and the third side plate.

[0012] In a preferred embodiment of this utility model, the heat sink is an aluminum heat sink profile.

[0013] As a preferred embodiment of this utility model, the end panel of the outer cover is provided with a first recess that is recessed towards the power board, and the heat-conducting sheet provided on the second outer surface of the heat sink is in contact with the inner wall surface of the first recess.

[0014] As a preferred embodiment of this utility model, the power board has wiring portions on both sides of its upper surface, and the outer cover has wire holes on its side corresponding to the wiring portions.

[0015] In a preferred embodiment of this utility model, the outer cover is disposed outside the bottom shell; the outer cover has at least one set of symmetrical side surfaces with supporting flanges, which are supported on the surface of the range hood housing; the supporting flanges are provided with screw holes.

[0016] In a preferred embodiment of this utility model, the power device is an IPM module; the outer cover is a metal outer cover, and the bottom shell is a plastic bottom shell.

[0017] As can be seen from the above technical solution, compared with the prior art, this utility model has the following beneficial technical effects: The range hood power supply box transfers heat from the power device to the heat sink through contact between the power device and the heat sink, and then transfers heat from the heat sink to the outer cover through contact between the heat sink and the outer cover, and finally transfers heat to the range hood housing through contact between the outer cover and the surface of the range hood housing. The large area of ​​the range hood housing facilitates heat dissipation, effectively cooling the power device and preventing damage to the electronic components inside the power supply box due to excessive temperature. The power supply box of this technology has a simple structure, is easy to install, and is conducive to improving production efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is an exploded view of the power supply box of the range hood of this utility model;

[0020] Figure 2 This is a cross-sectional schematic diagram of the power supply box for the range hood of this utility model;

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a schematic diagram of the power supply box of the range hood assembled on the surface of the range hood housing.

[0023] Explanation of reference numerals in the attached figures

[0024] Range hood housing 00; bottom shell 100; stud 110; outer cover 200; wire hole 201; first recess 210; support fold 220; power board 300; wiring part 310; power device 320; heat sink 400; first outer surface 401; second outer surface 402; main body 410; first side plate 411; second side plate 412; third side plate 413; fourth side plate 414; heat sink 420; heat conduction plate 510; heat conduction plate 520. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0026] In the description of this application, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] For the range hood power supply box, please refer to [link / reference]. Figure 1-4As shown, a power supply box is installed on the surface of the range hood housing 00. The power supply box includes: a bottom shell 100, an outer cover 200, a power board 300, and a radiator 400; the power board 300 is installed on the bottom shell 100, and the outer cover 200 covers the power board 300; as shown... Figure 2 As shown, the power board 300 is mounted on the bottom shell 100, which can be fixed to the bottom shell 100 by means of clips or screws. The assembly method is simple and convenient. After the power board 300 is installed, it is not in complete contact with the inner bottom surface of the bottom shell 100, which enhances the heat dissipation of the power board 300. Specifically, in this embodiment, the power board 300 is fixed to the bottom shell 100 by means of screws. The inner bottom surface of the bottom shell 100 is formed with a stud 110 with a lower screw hole protruding upward. The power board 300 is provided with an upper screw hole. The power board 300 is supported on the stud 110. The lower screw hole and the upper screw hole correspond to each other and are locked by screws.

[0029] The power board 300 is provided with electronic components and a wiring section 310; the electronic components include power devices 320 and other components; wherein, the power devices 320 may adopt the existing IPM module (IPM, Intelligent Power Module); the wiring section 310 may include various wiring terminals and sockets required for the range hood to operate.

[0030] The heat sink 400 is located between the power device 320 and the inner wall of the outer cover 200. In the first structural configuration, the heat sink 400 has a first outer surface 401 and a second outer surface 402, which are opposite to each other. The heat sink 400 can directly contact the inner wall of the power device 320 and the outer cover 200 to achieve heat transfer. Specifically, the first outer surface 401 of the heat sink 400 is in contact with the power device 320, and the second outer surface 402 of the heat sink 400 is in contact with the inner wall of the outer cover 200. The heat from the power device 320 is transferred to the heat sink 400, and then transferred to the outer cover 200, achieving good heat dissipation for the power device 320. In the second structural configuration, the heat sink 400 has a first outer surface 401 and a second outer surface 402. The second outer surface 402, the first outer surface 401 and the second outer surface 402 are opposite to each other; a heat-conducting plate 510 is installed on the first outer surface 401 of the heat sink 400, and the first outer surface 401 of the heat sink 400 is in contact with the power device 320 through the heat-conducting plate 510; a heat-conducting plate 520 is installed on the second outer surface 402 of the heat sink 400, and the second outer surface 402 of the heat sink 400 is in contact with the inner wall of the outer cover 200 through the heat-conducting plate 520; both the heat-conducting plate 510 and the heat-conducting plate 520 are thermally conductive silicone sheets, which have good thermal conductivity and can effectively transfer the heat of the power device 320 to the heat sink 400 through the heat-conducting plate 510, and the heat sink 400 then transfers the heat to the outer cover 200 through the heat-conducting plate 520, thereby achieving the purpose of good heat dissipation of the power device 320.

[0031] Furthermore, the power supply box is installed on the surface of the range hood housing 00, and at least one outer wall surface of the outer cover 200 is in contact with the surface of the range hood housing 00. The heat of the outer cover 200 is transferred to the range hood housing 00, so that heat dissipation is achieved through the outer cover 200 and the range hood housing 00, thereby improving heat dissipation efficiency.

[0032] Furthermore, the outer wall surface of the outer cover 200 that contacts the range hood housing 00 is defined as the outer cover contact surface. Similarly, the surface of the range hood housing 00 that contacts the outer cover 200 is defined as the housing contact surface. If the housing contact surface is a smooth plane, then the outer cover contact surface is set to a smooth plane. If the housing contact surface is designed with uneven structure, then the outer cover contact surface is adapted to be made with the same uneven shape, so as to achieve close contact between the outer wall surface of the outer cover 200 and the surface of the range hood housing 00, and achieve common heat dissipation.

[0033] In one embodiment, the radiator 400 includes: a main body 410 and a plurality of parallel heat sinks 420 disposed within the main body 410.

[0034] Specifically, the main body 410 is composed of a first side plate 411, a second side plate 412, a third side plate 413, and a fourth side plate 414 connected sequentially in a frame shape, and the heat sink 420 is perpendicular to the first side plate 411 and the third side plate 413. Figure 3 As shown, the interior of the main body 410 forms a heat dissipation gap, which can enhance the heat dissipation effect.

[0035] Furthermore, the heat sink 400 is made of aluminum heat dissipation profile. Aluminum has good thermal conductivity and can transfer the heat of the power device 320 to the outer cover 200.

[0036] Alternatively, in addition to using aluminum heat sink profiles, the radiator 400 can also use copper heat sink profiles, as copper also has good thermal conductivity.

[0037] like Figure 1 As shown, four support columns are provided at the bottom of the heat sink 400, that is, at the first outer surface 401, and the heat sink 400 is supported on the power board 300 by the support columns; the heat sink 400 is pressed against the power device 320 by the heat-conducting plate 510.

[0038] In one embodiment, the end panel of the outer cover 200 is provided with a first recess 210 recessed into the power board 300. The heat-conducting fins 520 provided on the second outer surface 402 of the heat sink 400 are in contact with the inner wall surface of the first recess 210. The first recess 210 facilitates the alignment and installation of the heat sink 400. Figure 2 As shown, the first recess 210 protrudes downward, pressing the heat-conducting plate 520 against the second outer surface 402 of the heat sink 400. To a certain extent, the heat sink 400 is pressed against the power device 320 by the heat-conducting plate 510, achieving a good heat transfer effect.

[0039] In one embodiment, wiring portions 310 are provided on both sides of the upper surface of the power board 300, and wire holes 201 are provided on the side of the outer cover 200, so that the wires used by the range hood, such as voltage input wires and lifting wires, can be connected to the wiring portions 310 through the range hood outlet and the wire holes 201 of the outer cover 200.

[0040] In one embodiment, the outer cover 200 is fitted over the bottom shell 100. The outer cover 200 has at least one set of symmetrical side panels with supporting flanges 220, which are supported on the surface of the range hood housing 00. The supporting flanges 220 are provided with screw holes. The outer cover 200 is fixed to the range hood housing 00 with screws and is stably supported on the range hood housing 00 by the supporting flanges 220, resulting in stable assembly.

[0041] Alternatively, the bottom shell 100 can also be fixed to the range hood housing 00 with screws;

[0042] Optionally, the bottom shell 100 can be assembled with the outer cover 200. The bottom shell 100 can be assembled with the outer cover 200 by means of a snap-fit ​​or by means of screws.

[0043] like Figure 2 and Figure 4 As shown, the power supply box is installed outside the range hood housing 00, and the outer cover 200 covers the bottom shell 100 inside, which to a certain extent prevents oil fumes and water vapor from entering the power supply box and avoids damage to the electronic components inside the power supply box due to pollution and corrosion from oil fumes and water vapor.

[0044] Furthermore, the outer cover 200 is a metal outer cover, and the bottom shell 100 is a plastic bottom shell; the outer cover 200 can be made of a metal material with good thermal conductivity, such as iron, aluminum, copper, etc., which can effectively absorb the heat of the radiator 400 and transfer it to the range hood housing 00.

[0045] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A range hood power supply box, characterized in that: The device includes a power supply box mounted on the surface of a range hood housing. The power supply box comprises a bottom shell, an outer cover, a power board, and a heat sink. The power board is mounted on the bottom shell, and the outer cover covers the power board. The power board is provided with electronic components and wiring terminals. The electronic components include power devices. The heat sink is located between the power devices and the inner wall of the outer cover, and the heat from the power devices is transferred to the outer cover through the heat sink.

2. The range hood power supply box according to claim 1, characterized in that: The heat sink has a first outer surface and a second outer surface, which are opposite to each other; the first outer surface of the heat sink is in contact with the power device; the second outer surface of the heat sink is in contact with the inner wall of the outer cover.

3. The range hood power supply box according to claim 1, characterized in that: The heat sink has a first outer surface and a second outer surface, which are opposite to each other; a heat-conducting fin is mounted on the first outer surface of the heat sink, and the first outer surface of the heat sink is in close contact with the power device through the heat-conducting fin. A heat-conducting fin is installed on the second outer surface of the radiator, and the second outer surface of the radiator is in contact with the inner wall of the outer cover through the heat-conducting fin.

4. The range hood power supply box according to claim 3, characterized in that: The heat-conducting sheet is a thermally conductive silicone sheet.

5. The range hood power supply box according to any one of claims 1-3, characterized in that: The radiator includes: a main body and a plurality of parallel heat sinks disposed within the main body; The main body is composed of a first side plate, a second side plate, a third side plate, and a fourth side plate connected in sequence to form a frame, and the heat sink is perpendicular to the first side plate and the third side plate.

6. The range hood power supply box according to claim 5, characterized in that: The heat sink is made of aluminum heat sink profile.

7. The range hood power supply box according to claim 3, characterized in that: The end panel of the outer cover is provided with a first recess that is recessed towards the power board, and the heat-conducting fins provided on the second outer surface of the heat sink are in contact with the inner wall surface of the first recess.

8. The range hood power supply box according to claim 1, characterized in that: The power board has wiring portions on both sides of its upper surface, and the outer cover has wire holes on its side.

9. The range hood power supply box according to claim 1, characterized in that: The outer cover is installed outside the bottom shell; the outer cover has at least one set of symmetrical side panels with supporting flanges, which are supported on the surface of the range hood housing; the supporting flanges are provided with screw holes.

10. The range hood power supply box according to claim 1, characterized in that: The power device is an IPM module; the outer cover is a metal outer cover, and the bottom shell is a plastic bottom shell.

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