Fan

Abstract

The utility model relates to the technical field of fans, and provides a fan which comprises a fan shell, a motor and an impeller. A motor is installed in the fan shell, and an impeller is arranged on the motor. The impeller is provided with a cup part and a plurality of blades uniformly arranged on the periphery of the cup part; the cup part is provided with an inner wall and an outer wall in the circumferential direction, and a plurality of rib parts are evenly distributed between the inner wall and the outer wall. The fan shell is provided with a motor mounting part and a plurality of static wings which are uniformly distributed in the circumferential direction of the motor mounting part; and a motor is arranged on the motor mounting part. According to the utility model, the impeller not only can inhibit the generation of cooling deformation, but also can ensure the mechanical strength.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, and particularly relates to a fan. Background Art

[0002] With the high-load development of heat dissipation devices, higher requirements are placed on the air volume output of fans. As the overall size of the fan increases, the thickness of the fan frame and impeller also increases accordingly, resulting in an increase in the consumption of resin materials.

[0003] The increase in the fan size can improve the air volume output of the fan, but at the same time, the thickening of the frame and the increase in the thickness of the impeller will cause an increase in the defective rate of the molded product. Specifically, when the wall thickness of the impeller cup part increases, the cooling deformation amount increases during the molding process. This increase in the cooling deformation amount will cause a change in the true roundness of the impeller cup part, and further lead to a large deformation of the impeller cup part, resulting in defective products, thereby affecting the assembly and fixation of the impeller and the motor and affecting the product quality. Summary of the Utility Model

[0004] The utility model mainly solves the technical problem that when the wall thickness of the impeller installation part of the existing technology fan increases, it leads to a large deformation of the impeller installation part and defective products, and proposes a fan that can both inhibit the generation of cooling deformation of the impeller and ensure mechanical strength.

[0005] The utility model provides a fan, comprising: a fan housing, a motor and an impeller;

[0006] The motor is installed in the fan housing, and the impeller is arranged on the motor;

[0007] The impeller has a cup part and a plurality of blades uniformly arranged on the outer circumference of the cup part;

[0008] The cup part has an inner wall and an outer wall in the circumferential direction, and a plurality of rib parts are uniformly distributed between the inner wall and the outer wall.

[0009] Preferably, the fan housing has a motor installation part and a plurality of static blades uniformly distributed in the circumferential direction of the motor installation part;

[0010] The motor is arranged on the motor installation part.

[0011] Preferably, a potting hole is formed on the motor installation part.

[0012] Preferably, the motor includes: a circuit board;

[0013] A through hole corresponding to the potting hole is formed on the circuit board.

[0014] Preferably, the static blades are inclined; or, the static blades are flush with the motor installation part.

[0015] Preferably, the inner wall of the cup part is distributed with protrusions parallel to the axis.

[0016] A fan provided by the present utility model has a thick-walled part of the cup part provided with an inner wall and an outer wall, with a space left between the inner wall and the outer wall. At the same time, a plurality of rib parts are evenly arranged between the inner wall and the outer wall. Such a design can not only inhibit the generation of cooling deformation of the impeller but also ensure the mechanical strength of the impeller, reduce product defects, facilitate the assembly and fixation with the motor, and ensure product quality. The present utility model opens through holes on the circuit board to facilitate the smoother flow of glue into the motor when pouring glue. Description of the Drawings

[0017] Figure 1 is a schematic structural view of the fan provided by the present utility model Figure 1 (hiding the impeller);

[0018] Figure 2 is a schematic structural view of the fan provided by the present utility model Figure 2 (hiding the impeller and the motor housing);

[0019] Figure 3 is a schematic structural view of the impeller provided by the present utility model;

[0020] Figure 4 is a schematic structural view of the first style of the fan housing provided by the present utility model;

[0021] Figure 5 is a schematic structural view of the second style of the fan housing provided by the present utility model.

[0022] Reference numerals: 1, impeller; 2, fan housing; 3, motor; 101, impeller housing; 102, blade; 103, rib part; 104, protrusion; 201, motor mounting part; 202, stationary vane; 203, glue injection hole; 301, circuit board; 302, through hole. Detailed Description of the Embodiment

[0023] To make the technical problems solved by the present utility model, the technical solutions adopted, and the achieved technical effects clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model and are not intended to limit the present utility model. In addition, it should be noted that for the convenience of description, only parts related to the present utility model are shown in the drawings rather than all the content.

[0024] As Figure 1-2 shown, a fan provided by an embodiment of the present utility model includes: a fan housing 2, a motor 3, and an impeller 1.

[0025] The motor 3 is installed in the fan housing 2, and the impeller 1 is arranged on the motor 3.

[0026] As shown Figure 3 in the figure, the impeller 1 has a cup portion 101 and a plurality of blades 102 uniformly arranged on the outer circumference of the cup portion 101. The circumferential direction of the cup portion 101 has an inner wall and an outer wall, and a plurality of rib portions 103 are uniformly distributed between the inner wall and the outer wall. In the utility model, the thick wall portion of the cup portion 101 is set as the inner wall and the outer wall, and there is a space between the inner wall and the outer wall, so that the cup portion 101 becomes thinner, which can reduce the deformation of the cup portion 101 during cooling and maintain the true roundness of the cup portion 101; at the same time, a plurality of rib portions 103 are uniformly arranged between the inner wall and the outer wall, which can ensure the mechanical strength of the cup portion 101. The impeller 1 of the utility model can not only inhibit the generation of cooling deformation but also ensure the mechanical strength of the impeller 1.

[0027] On the inner side of the inner wall of the cup portion 101, protrusions 104 parallel to the axial direction are distributively arranged. The protrusions 104 are stuck outside the rotor frame of the motor 3. Through the cooperation installation of the protrusions 104 and the rotor frame, the design and processing precision of the inner circumference of the cup portion 101 is reduced. Even if the inner circumference of the cup portion is slightly deformed during molding, it will not affect the installation of the cup portion 101 and the rotor frame.

[0028] The fan housing 2 has a motor mounting portion 201 and a plurality of stationary blades 202 uniformly distributed in the circumferential direction of the motor mounting portion 201; the motor 3 is arranged on the motor mounting portion 201. A glue filling hole 203 is opened on the motor mounting portion 201. The stationary blades 202 are flush with the motor mounting portion 201 (as shown Figure 4 ); or, the stationary blades 202 are inclined (as shown Figure 5 ), that is, the root of the stationary blade 202 is above the bottom surface of the fan housing 2. By inclining the stationary blades 202, the noise during fan rotation can be reduced.

[0029] The motor 3 includes: a circuit board 301; a through hole 302 corresponding to the glue filling hole 203 is opened on the circuit board 301. In the utility model, the through hole 302 is opened on the circuit board 301, which is convenient for the glue to flow more smoothly into the motor during pouring, improves the glue filling amount inside the motor, prevents the generation of air bubbles, and thus improves the sealing performance of the waterproof fan.

[0030] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: modifying the technical solutions recorded in the foregoing embodiments, or equivalently replacing some or all of the technical features therein, does not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fan, characterized in that: include: A fan housing (2), a motor (3) and an impeller (1); A motor (3) is installed in the fan housing (2), and an impeller (1) is arranged on the motor (3); The impeller (1) comprises a cup portion (101) and a plurality of blades (102) uniformly arranged on the periphery of the cup portion (101); The cup portion (101) has an inner wall and an outer wall in the circumferential direction, and a plurality of ribs (103) are evenly distributed between the inner wall and the outer wall.

2. The fan according to claim 1, characterized in that The fan housing (2) comprises a motor mounting portion (201) and a plurality of stationary wings (202) evenly distributed in a circumferential direction of the motor mounting portion (201); The motor mounting portion (201) is provided with a motor (3).

3. The fan according to claim 2, characterized in that: The motor mounting portion (201) is provided with a glue injection hole (203).

4. The fan according to claim 3, characterized in that: The motor (3) comprises: a circuit board (301); The circuit board (301) is provided with a through hole (302) corresponding to the glue injection hole (203).

5. The fan according to claim 2, characterized in that: The stationary wing (202) is arranged obliquely; or, the stationary wing (202) is flush with the motor mounting portion (201).

6. The fan according to claim 1, characterized in that: Protrusions (104) parallel to the axial direction are distributed on the inner side of the inner wall of the cup portion (101).

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