Ash deposition prevention automobile electronic fan assembly

Abstract

The utility model discloses an anti-dust automobile electronic fan assembly which comprises a motor, fan blades, a protective cover and a dust cover, the motor is fixed at the rear end in the protective cover, the fan blades are fixed on an output shaft of the motor and located in the middle in the protective cover, the dust cover is fixed at the rear end of the protective cover and is a Z-shaped cover body, and the front face of the lower end of the dust cover is provided with a connecting part corresponding to the protective cover. An air inlet transversely extending backwards is formed in the upper end of the dust cover, a first filter screen is fixed to the air inlet, a partition plate is arranged in the dust cover behind the air inlet, the lower end of the partition plate extends to the upper end of the protective cover, and a vertical air channel is formed by the partition plate and the inner wall of the dust cover. And the second filter screen consists of a frame body and a plurality of rough hard non-woven fabric sheets which are obliquely arranged in the frame body at equal intervals. The dust-proof device disclosed by the utility model is compact in structure, small in occupied space and good in dust-proof effect.

Description

Technical Field

[0001] This utility model relates to an anti-dust automotive electronic fan assembly. Background Technology

[0002] The air conditioning system in a car requires an electric fan for auxiliary operation. However, after a period of operation, the electric fan may produce abnormal noises or even fail to work properly due to dust accumulation. Therefore, it is necessary to install a dustproof structure for the electric fan. However, due to the large number of internal components and limited space in a car, directly installing multiple filters at the air inlet of the electric fan would not only greatly reduce the air intake of the electric fan, but also pose a problem of not being able to install it properly due to its large size. On the other hand, adding one or two simple single-layer filters cannot achieve the ideal dustproof effect. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a compact, space-saving, and dust-proof automotive electric fan assembly with good dust-proof effect.

[0004] The technical solution of this utility model is: a dust-proof automotive electric fan assembly, including a motor, fan blades, a protective cover, and a dust cover;

[0005] The motor is fixed inside the rear end of the protective cover, and the fan blades are fixed on the output shaft of the motor and located in the middle of the protective cover.

[0006] The dust cover is fixed to the rear end of the protective cover. The dust cover is a "Z"-shaped cover. The lower front of the dust cover has a corresponding connecting part to the protective cover. The upper end of the dust cover has an air inlet that extends laterally backward. A first filter screen is fixed on the air inlet. A partition is provided inside the dust cover behind the air inlet. The lower end of the partition extends to the upper end of the protective cover. The partition and the inner wall of the dust cover form a vertical air duct. A second filter screen is inserted into the air duct from the back of the dust cover. The second filter screen is composed of a frame and multiple rough, hard non-woven fabric sheets that are equidistantly and inclinedly arranged inside the frame.

[0007] Furthermore, a first seal is provided at the connection between the dust cover and the protective cover.

[0008] Furthermore, the protective cover is provided with fixing parts on both sides.

[0009] Furthermore, the dust cover has interfaces corresponding to the frame on its back and inside, and a second seal is provided at the connection between the frame and the back of the dust cover.

[0010] Furthermore, a handle is also provided on the outside of the frame.

[0011] Furthermore, the air inlet is an enlarged square air inlet.

[0012] Furthermore, the first filter screen is composed of a frame and a metal mesh fixed inside the frame. A third seal is provided on the outer periphery of the frame, and a handle is also provided on the frame. The first filter screen is inserted into the air inlet and limited by the third seal.

[0013] Furthermore, the dust covers at both ends of the air duct also have curved chamfers.

[0014] Furthermore, the dust cover also has process holes at the positions corresponding to the arc-shaped chamfer inside.

[0015] Specifically, the motor is a flat brushless DC motor.

[0016] The beneficial effects of this utility model are: the dual filter screen, especially the second filter screen composed of multiple rough, hard non-woven fabric sheets arranged at an angle, can prevent dust from entering the electric fan, prevent dust accumulation inside the electric fan, and thus ensure the long-term normal operation of the electric fan and extend its service life; the "Z"-shaped dust cover design compresses the volume of the dust cover to reduce the required installation space, while the installation position and structural design of the first and second filters make them easy to disassemble and install, and convenient for maintenance and cleaning. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the present invention;

[0018] Figure 2 This is a front structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the first filter screen of this utility model.

[0020] In the diagram: 1. Motor; 2. Fan blade; 3. Protective cover; 4. Dust cover; 5. Connecting part; 6. Air inlet; 7. First filter; 8. Partition plate; 9. Frame; 10. Rigid non-woven fabric sheet; 11. First seal; 12. Fixing part; 13. Second seal; 14. Handle; 15. Frame; 16. Metal mesh; 17. Grip handle; 18. Third seal; 19. Process hole. Detailed Implementation

[0021] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0022] Combination Figure 1-3 As shown, an anti-dust automotive electric fan assembly includes a motor 1, fan blades 2, a protective cover 3, and a dust cover 4;

[0023] The motor 1 is fixed inside the rear end of the protective cover 3, and the fan blade 2 is fixed on the output shaft of the motor 1 and located in the middle of the protective cover 3. The protective cover 3 serves to protect the fan blade 2 and prevent dust from falling on the fan blade 2 when the fan stops working.

[0024] The dust cover 4 is fixed to the rear end of the protective cover 3. The dust cover 4 is a "Z"-shaped cover. The lower front of the dust cover 4 has a connecting part 5 corresponding to the protective cover 3. The upper end of the dust cover 4 has a rearwardly extending air inlet 6 to prevent dust from continuing to fall into the dust cover 4 after the fan stops working. A first filter 7 is fixed on the air inlet 6 to block large particles of impurities. A partition 8 is provided inside the dust cover 4 behind the air inlet 6. The lower end of the partition 8 extends to the upper end of the cover 3. The partition 8 and the inner wall of the dust cover 4 form a vertical air duct. A second filter is inserted into the air duct from the back of the dust cover 4. The second filter consists of a frame 9 and multiple rough, hard non-woven fabric sheets 10 that are equidistantly and inclined within the frame 9. When the air entering the air duct passes through the gaps between the hard non-woven fabric sheets 10, the dust mixed in is blocked and adsorbed by the hard non-woven fabric sheets 10 to ensure the cleanliness of the working environment inside the fan.

[0025] The beneficial effects of the above structure are: the dual filters, especially the second filter composed of multiple rough, hard non-woven fabric sheets 10 arranged at an angle, can prevent dust from entering the electric fan, prevent dust accumulation inside the electric fan, and thus ensure the long-term normal operation of the electric fan and extend its service life; the "Z"-shaped dust cover 4 compresses the volume of the dust cover 4 to reduce the required installation space, while the installation position and structural design of the first filter 7 and the second filter make them easy to disassemble and install, and convenient to maintain and clean.

[0026] In another embodiment, combined Figure 1 and Figure 2 As shown, a first seal 11 is provided at the connection between the dust cover 4 and the protective cover 3 to prevent impurities in the air from entering through the gap between the dust cover 4 and the protective cover 3.

[0027] In another embodiment, such as Figure 1 As shown, the protective cover 3 is also provided with fixing parts 12 on both sides, and the fixing parts 12 are used to connect the fan bracket inside the car.

[0028] In another embodiment, such as Figure 1 As shown, the dust cover 4 has an interface corresponding to the frame 9 on its back and inside. The connection between the frame 9 and the back of the dust cover 4 is also provided with a second seal 13 to prevent air from entering directly through the gap between the second filter and the dust cover 4.

[0029] In another embodiment, such as Figure 1 As shown, a handle 14 is also provided on the outside of the frame 9 to facilitate the insertion and removal of the second filter.

[0030] In another embodiment, combined Figure 1 and Figure 2 As shown, the air inlet 6 is an enlarged square air inlet.

[0031] In another embodiment, combined Figure 1 and Figure 3 As shown, the first filter 7 consists of a frame 15 and a metal mesh 16 fixed inside the frame 15. The frame 15 is provided with a third seal 18 on its outer periphery and a handle 17 on the frame 15. The first filter 7 is inserted into the air inlet 6 and limited by the third seal 18 to facilitate the installation and removal of the first filter 7.

[0032] In another embodiment, such as Figure 1 As shown, the dust covers 4 at both ends of the air duct also have arc-shaped chamfers to reduce wind resistance.

[0033] In another embodiment, such as Figure 1 As shown, the dust cover 4 also has a process hole 19 at the position corresponding to the arc-shaped chamfer inside, in order to reduce the weight of the dust cover 4.

[0034] Specifically, the motor 1 is a flat brushless DC motor.

Claims

1. A dust-prevention automotive electric fan assembly, characterized in that, It includes a motor (1), fan blades (2), a protective cover (3), and a dust cover (4); The motor (1) is fixed inside the rear end of the cover (3), and the fan blade (2) is fixed on the output shaft of the motor (1) and located in the middle of the cover (3); The dust cover (4) is fixed to the rear end of the protective cover (3). The dust cover (4) is a "Z" shaped cover. The lower front of the dust cover (4) has a connecting part (5) corresponding to the protective cover (3). The upper end of the dust cover (4) has an air inlet (6) that extends laterally to the rear. A first filter (7) is fixed on the air inlet (6). A partition (8) is provided inside the dust cover (4) behind the air inlet (6). The lower end of the partition (8) extends to the upper end of the protective cover (3). The partition (8) and the inner wall of the dust cover (4) form a vertical air duct. A second filter is inserted into the air duct from the back of the dust cover (4). The second filter is composed of a frame (9) and multiple rough, hard non-woven fabric sheets (10) that are equally spaced and inclined inside the frame (9).

2. The anti-dust automotive electric fan assembly as described in claim 1, characterized in that, The connection between the dust cover (4) and the protective cover (3) is also provided with a first seal (11).

3. The anti-dust automotive electric fan assembly as described in claim 2, characterized in that, The protective cover (3) is also provided with fixing parts (12) on both sides.

4. The anti-dust automotive electric fan assembly as described in claim 3, characterized in that, The dust cover (4) has an interface corresponding to the frame (9) on its back and inside. A second seal (13) is also provided at the connection between the frame (9) and the back of the dust cover (4).

5. The anti-dust automotive electric fan assembly as described in claim 4, characterized in that, A handle (14) is also provided on the outside of the frame (9).

6. The anti-dust automotive electric fan assembly as described in claim 5, characterized in that, The air inlet (6) is an enlarged square air inlet.

7. The anti-dust automotive electric fan assembly as described in claim 6, characterized in that, The first filter (7) consists of a frame (15) and a metal mesh (16) fixed inside the frame (15). The frame (15) has a third seal (18) on its outer periphery and a handle (17) on the frame (15). The first filter (7) is inserted into the air inlet (6) and limited by the third seal (18).

8. The anti-dust automotive electric fan assembly as described in claim 7, characterized in that, The dust covers (4) at both ends of the air duct also have arc-shaped chamfers.

9. The anti-dust automotive electric fan assembly as described in claim 8, characterized in that, The dust cover (4) also has a process hole (19) at the position corresponding to the arc chamfer inside.

10. The anti-dust automotive electric fan assembly as described in claim 9, characterized in that, The motor (1) is a flat brushless DC motor.

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