Wind wheel heat dissipation type automobile air conditioner fan

Abstract

The utility model discloses a wind wheel heat dissipation type automobile air conditioner fan which comprises a tray, a motor and a wind wheel, the motor is installed on the tray, the wind wheel is installed on a motor shaft of the motor, the wind wheel comprises a connecting cover, fan blades and two connecting rings, the edge of an opening of the connecting cover is connected with the connecting rings, and the peripheries of the lower ends of the fan blades are evenly distributed and connected to the connecting rings. A barrel-shaped shaft sleeve is arranged at the central axis position of the connecting cover, reinforcing ribs connected with the shaft sleeve are arranged on the inner wall of the connecting cover, the reinforcing ribs and the shaft sleeve are uniformly distributed in a central radiation mode, and an inclined stress enhancing curved surface is arranged on the peripheral wall, between the reinforcing ribs, of the connecting cover. Therefore, the technical effects of stable and reliable structure and good balance are achieved.

Description

Technical Field

[0001] The utility model relates to an automobile air-conditioning system component, in particular to a wind wheel heat dissipation type automobile air-conditioning fan. Background Art

[0002] The air conditioning fan used in the car is mainly used to control the air volume and thus adjust the temperature inside the car. The fan wheel on the existing automobile air conditioning fan is made of plastic, and its structure includes fan blades evenly distributed around the circumference and a mounting hole connected to the motor shaft in the middle. The edge of the mounting hole is connected to a connecting cover with a parabolic cross-section, and the connecting cover is connected to a connecting ring at the bottom of the fan blade. During injection molding, the mounting hole is still in a relatively high temperature state due to the plastic and the insufficient thin-wall stress of the connecting cover, resulting in the mounting hole being deformed and offset during the cooling process, resulting in the connecting ring and the mounting hole of the fan blade being not on the same axis, resulting in poor balance. The rotation of the fan wheel installed will be elliptical and accompanied by noise. At the same time, when heating the car, the mounting hole will also be softened, causing it to deform and offset, resulting in poor balance and poor heat dissipation. Utility Model Content

[0003] In order to solve the above problems, the purpose of the utility model is to provide a wind wheel heat dissipation type automobile air-conditioning fan with a stable and reliable structure and good balance.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wind wheel heat dissipation type automobile air-conditioning fan, comprising a tray, a motor and a wind wheel, the motor is installed on the tray, the wind wheel is installed on the motor shaft of the motor, the wind wheel comprises a connecting cover, a fan blade and a connecting ring, the opening edge of the connecting cover is connected to the connecting ring, the lower end of the fan blade is evenly connected to the connecting ring around the circumference, a cylindrical sleeve is arranged at the central axis position of the connecting cover, reinforcing ribs connected to the sleeve are arranged on the inner wall of the connecting cover, the reinforcing ribs and the sleeve are evenly distributed in a central radial manner, and an inclined stress enhancement curved surface is arranged on the peripheral wall of the connecting cover between the reinforcing ribs.

[0005] The tray is provided with an annular drainage groove.

[0006] The beneficial effect of the utility model is that when the wind wheel is injection molded, the reinforcing ribs and the stress-enhanced curved surface effectively increase the thickness and support in the circumferential direction around the sleeve, and improve the stress support for the sleeve, so that the position of the sleeve will not be easily deformed and displaced under heat, and the verticality of the sleeve is better, thus achieving the technical effect of stable, reliable and well-balanced structure.

[0007] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1It is a cross-sectional structural diagram of a specific implementation method of the utility model;

[0009] Figure 2 It is an exploded view of a specific implementation method of the utility model;

[0010] Figure 3 It is a three-dimensional diagram of the wind wheel in a specific implementation manner of the utility model. DETAILED DESCRIPTION

[0011] The present invention is specifically described below through embodiments, which are only used to further illustrate the present invention and should not be construed as limiting the protection scope of the present invention.

[0012] like Figure 1 — Figure 3 As shown, this embodiment discloses a fan of a car air conditioner with a fan wheel 3 heat dissipation, comprising a tray 1, a motor 2 and a fan wheel 3, wherein the motor 2 is mounted on the tray 1, the fan wheel 3 is mounted on the motor 2 shaft of the motor 2, the fan wheel 3 comprises a connecting cover 31, fan blades 32 and a connecting ring 33, the opening edge of the connecting cover 31 is connected to the connecting ring 33, the lower ends of the fan blades 32 are evenly connected to the connecting ring 33, the upper ends of the fan blades 32 are evenly connected to another connecting ring, and the central axis position of the connecting cover 31 is provided with The shaft sleeve 34 is cylindrical, and the inner hole of the shaft sleeve 34 is the mounting hole for mounting the shaft of the motor 2. The inner wall of the connecting cover 31 is provided with reinforcing ribs 35 connected to the shaft sleeve 34. The reinforcing ribs 35 are evenly distributed in a radial pattern with the shaft sleeve 34 as the center. The peripheral wall of the connecting cover 31 located between the reinforcing ribs 35 is provided with an inclined stress enhancement curved surface 36. The area of ​​the stress enhancement curved surface 36 is evenly distributed around the shaft sleeve 34 in a petal shape. Of course, the stress enhancement curved surface 36 can also be designed to be flat.

[0013] The tray 1 is provided with an annular drainage groove 4, through which water generated during the hot and cold conversion process of the waterproof air conditioner or liquid invasion can be effectively discharged into the drainage groove in time, thereby protecting the motor. The drainage groove is close to the fan blades, and the wind flow generated by the fan blades can be blown dry in time.

[0014] By adopting the above technical solution, when the wind wheel 3 is injection molded, the reinforcing ribs 35 and the stress enhanced curved surface 36 effectively increase the thickness and support in the circumferential direction around the sleeve 34, and improve the stress support for the sleeve 34, so that the position of the sleeve 34 will not be easily deformed and offset under heat, and the verticality of the sleeve 34 is better, thereby achieving the technical effect of stable and reliable structure and good balance. Therefore, the wind wheel will not generate noise after installation and rotates smoothly, thereby effectively improving the heat dissipation effect during the air conditioning heating process.

[0015] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0016] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description 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 may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A wind wheel heat dissipation type automobile air conditioner fan, comprising a tray, a motor and a wind wheel, wherein the motor is mounted on the tray, the wind wheel is mounted on the motor shaft of the motor, the wind wheel comprises a connecting cover, a fan blade and a connecting ring, the opening edge of the connecting cover is connected to the connecting ring, and the lower end of the fan blade is evenly connected to the connecting ring around the circumference, characterized in that: A cylindrical sleeve is arranged at the central axis of the connection cover, and reinforcing ribs connected to the sleeve are arranged on the inner wall of the connection cover. The reinforcing ribs and the sleeve are evenly distributed in a central radial pattern, and an inclined stress enhancement curved surface is arranged on the peripheral wall of the connection cover between the reinforcing ribs.

2. The wind wheel heat dissipation type automobile air conditioning fan according to claim 1, characterized in that: The tray is provided with an annular drainage groove.

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