Internal circulation heat dissipation automobile air conditioner fan

Abstract

The utility model discloses an internal circulation heat dissipation automobile air conditioner fan which comprises a heat dissipation module, a base, a shell, a motor and a wind wheel, the shell is detachably connected with the base through a buckle mechanism, and the heat dissipation module is connected with the base through a double-fixing mechanism; the heat dissipation module comprises a shell and an aluminum heat dissipation plate, a circuit board is packaged in the shell, the heat dissipation plate is provided with heat dissipation protruding columns protruding towards an inner cavity of the shell, the height of the protruding columns ranges from 3 mm to 5 mm, the protruding columns are distributed in an array mode, and therefore the technical purpose of improving the assembly efficiency and the heat dissipation effect is achieved.

Description

Technical Field

[0001] The utility model relates to a component in a heat dissipation system of an automobile air conditioner, in particular to an internal circulation heat dissipation automobile air conditioner fan. Background Art

[0002] The structure of an automotive air-conditioning fan mainly includes a housing, a PCB circuit board, a motor, and a wind wheel. The PCB circuit board is connected to the vehicle ECU. When the air-conditioning fan is running, the components on the PCB circuit board will continue to work and generate heat. If the heat cannot be dissipated in time, they will be damaged due to excessive temperature. In addition, the existing PCB circuit boards are directly installed in the housing, resulting in very cumbersome installation and low efficiency. Heat dissipation and rapid assembly are urgent issues that need to be addressed. Utility Model Content

[0003] In order to solve the above problems, the utility model provides an internal circulation heat dissipation automobile air-conditioning fan, which aims to quickly assemble modular components by snapping them together to improve assembly efficiency, while realizing internal circulation of airflow to provide heat dissipation for the motor and various components.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an internal circulation heat dissipation automobile air-conditioning fan, comprising a heat dissipation module (1), a base (2), a shell (3), a motor and a wind wheel (5), wherein the shell (3) and the base (2) are detachably connected via a snap mechanism, and the heat dissipation module (1) is connected to the base (2) via a double fixing mechanism; the heat dissipation module (1) comprises a shell (11) and an aluminum heat dissipation plate (12), wherein a PCB circuit board is encapsulated in the shell (11), and the heat dissipation plate (12) is provided with heat dissipation bosses (121) protruding toward the inner cavity of the shell, wherein the bosses have a height of 3-5 mm and are distributed in an array;

[0005] The double fixing mechanism comprises: a snap assembly: right-angled triangular snap blocks (122) are provided on both sides of the heat dissipation plate (12), and a 7-shaped snap block (21) is provided at a corresponding position of the base (2);

[0006] Screw assembly: A screw block is provided in the middle of the heat dissipation plate (12) and is connected to the base (2) via screws.

[0007] The inner wall of the shell (3) is provided with an annular evenly distributed and vertical guide groove (31), the ends of which extend to the bottom of the shell.

[0008] The snap mechanism comprises an N-shaped snap block (33) arranged on the peripheral wall of the housing (3), and a right-angled triangle snap block (22) is provided at a corresponding position of the base (2).

[0009] The beneficial effects of the present invention are: the base, the shell, and the heat dissipation module are connected by a snap-on assembly, which greatly facilitates the efficiency of assembly. At the same time, the heat dissipation plate on the heat dissipation module improves the heat dissipation efficiency of the components. The guide groove can circulate the air flow driven by the wind wheel internally to guide the air and dissipate heat to the motor and the heat dissipation plate, thus achieving the technical purpose of improving assembly efficiency and heat dissipation effect.

[0010] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A three-dimensional diagram of a specific embodiment of the present invention Figure 1 ;

[0012] Figure 2 A three-dimensional diagram of a specific embodiment of the present invention Figure 2 ;

[0013] Figure 3 for Figure 2 A magnified view of middle A;

[0014] Figure 4 It is a partial cross-sectional view of a specific embodiment of the utility model;

[0015] Figure 5 It is a three-dimensional diagram of the heat dissipation module in a specific embodiment of the present utility model.

[0016] In the figure, 1. heat dissipation module; 2. base; 3. outer shell; 5. wind wheel; 11. shell; 12. aluminum heat dissipation plate; 121. heat dissipation boss; 122. right-angled triangular buckle block; 21. 7-shaped clip block; 31. guide groove; 33. N-shaped clip block; 22. right-angled triangular clip block; 4. empty slot; 42. motor mounting slot; 6. through slot. DETAILED DESCRIPTION

[0017] The present invention is described in detail below through examples, which are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention.

[0018] like Figure 1 — Figure 5As shown, this embodiment discloses an internal circulation heat dissipation automobile air conditioning fan, including a heat dissipation module 1, a base 2, a housing 3, a motor and a wind wheel 5. The housing 3 and the base 2 are detachably connected by a snap mechanism, and the heat dissipation module 1 is connected to the base 2 by a dual fixing mechanism. The heat dissipation module 1 includes a housing 11 and an aluminum heat dissipation plate 12. The housing 11 encapsulates a PCB circuit board. The housing and PCB packaging: The housing 11 is made of flame-retardant ABS material, and the PCB circuit board is encapsulated inside. The component layout is in direct contact with the heat dissipation plate 12, shortening the heat conduction path. The heat dissipation plate 12 is provided with heat dissipation protrusions 121 protruding into the inner cavity of the housing. The protrusions are 3-5 mm high and distributed in an array.

[0019] The double fixing mechanism includes: a snap assembly: right-angled triangular snap-in blocks 122 are provided on both sides of the heat sink 12, and a 7-shaped snap-in block 21 is provided at the corresponding position of the base 2. The right-angled triangular snap-in blocks 122 on both sides of the heat sink cooperate with the 7-shaped snap-in blocks 21 of the base. When installing, insert them at a 45° angle and press down to lock them;

[0020] Screw assembly: A screw block is provided in the middle of the heat sink 12 and is connected to the base 2 by screws.

[0021] The inner wall of the housing 3 is provided with an annular uniformly distributed and vertical guide groove 31, the end of which extends to the bottom of the housing, so that the air flow can be directed to the motor and the convex column of the heat sink, taking away the heat of the motor and the heat sink.

[0022] The snap mechanism includes an N-shaped snap block 33 arranged on the peripheral wall of the housing 3, and a right-angled triangular snap block 22 is provided at the corresponding position of the base 2. The front end of the N-shaped snap block 33 is pressed into the triangular snap block along the triangular snap inclined surface and locked.

[0023] An empty slot 4 is provided on the base 2 near the heat dissipation module 1, and a through slot 6 is provided between the empty slot 4 and the motor mounting slot 42 of the base for ventilation to the bottom of the motor, thereby improving the circulation efficiency of the internal circulation.

[0024] After adopting the above technical solution, the base, shell and heat dissipation module are connected by snap-on components, which greatly facilitates the assembly efficiency. At the same time, the heat dissipation plate on the heat dissipation module improves the heat dissipation efficiency of the components. The guide groove can circulate the airflow driven by the wind wheel internally to guide the air and dissipate heat to the motor and the heat dissipation plate, thus achieving the technical purpose of improving assembly efficiency and heat dissipation effect.

[0025] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims be included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0026] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An internal circulation heat dissipation automobile air-conditioning fan, comprising a heat dissipation module (1), a base (2), a housing (3), a motor and a wind wheel (5), wherein the housing (3) and the base (2) are detachably connected via a snap mechanism, and the heat dissipation module (1) is connected to the base (2) via a double fixing mechanism; the heat dissipation module (1) comprises a housing (11) and an aluminum heat dissipation plate (12), wherein a PCB circuit board is encapsulated in the housing (11), and the heat dissipation plate (12) is provided with heat dissipation bosses (121) protruding toward the inner cavity of the housing, and the bosses are distributed in an array, and the inner wall of the housing (3) is provided with an annular uniformly distributed and vertical guide groove (31), the end of which extends to the bottom position of the housing; The dual fixing mechanism comprises: Buckle assembly: right-angled triangular buckle blocks (122) are provided on both sides of the heat dissipation plate (12), and a 7-shaped buckle block (21) is provided at the corresponding position of the base (2); Screw assembly: A screw block (123) is provided in the middle of the heat dissipation plate (12) and is connected to the base (2) by screws.

2. The fan according to claim 1, characterized in that: The snap mechanism comprises an N-shaped snap block (33) arranged on the peripheral wall of the housing (3), and a right-angled triangle snap block (22) is provided at a corresponding position of the base (2).

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