DETACHABLE FAN ASSEMBLY

Description

RELATED APPLICATIONS

This US application claims the priority to Chinese application No. 202422605057.6, filed on October 25, 2024, which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

The present disclosure is related to the field of cooling technology, in particular a fan assembly that can be easily disassembled for maintenance and component replacement.

BACKGROUND

Electric fans are household appliances that utilize electric motors to drive fan blades for air circulation and cooling. These devices can be widely used in homes, offices, hospitals, and other settings. Conventional fans can typically include a frame body, a motor, and fan blades mounted on the motor's output end. Existing fan blades can be made of plastic materials with installation holes that fit directly over the motor output end. The installation hole's inner diameter may be smaller than the motor output end's outer diameter, necessitating significant physical force during installation.

Fan components are prone to damage after prolonged use, necessitating replacement. However, disassembly might be difficult, requiring personnel to forcefully remove the fan blades. After frequent removal and reconnection, the installation hole can expand, causing slippage and, in most cases, requiring complete unit replacement. This approach may squander resources. Consequently, there is a necessity for an enhanced fan assembly design that facilitates convenient disassembly and reassembly while maintaining secure operation.

SUMMARY

Aspects of the disclosure provide a fan assembly. The fan assembly includes a fan blade assembly having a fan blade frame having an inner surface and a outer surface, a middle tube having a first magnet block mounted at a bottom portion thereof, a bearing disposed within the middle tube, a shaft disposed within the bearing, one end of the shaft is disposed on the inner surface of the fan blade frame, fan blades disposed on outer surface of the fan blade frame, and a magnetic assembly disposed within the fan blade assembly, and a fan frame having a support frame with a support tube extending therefrom, the middle tube is configured to insert into the support tube, a second magnet block disposed within the support tube, a motor assembly mounted to an exterior of the support tube, the motor assembly including a PCB board mounted to a bottom portion thereof, wherein the first magnet block and the second magnet block are configured to magnetically attract each other when the middle tube is inserted into the support tube.

In an embodiment, the first magnet block and the second magnet block can include opposite polarity magnets configured such that when the first magnet block approaches the second magnet block, the first magnet block and the second magnet block magnetically attract each other.

In an embodiment, the fan assembly can further include a positioning ring disposed within the middle tube and fitted around an inner wall of the middle tube.

In an embodiment, the fan blade assembly can further include a wear-resistant disc installed within the middle tube.

In an embodiment, the fan blade assembly can include a gasket fitted around an outer wall of the shaft, and a retaining ring fitted around the outer wall of the shaft, wherein both the gasket and the retaining ring are disposed within the middle tube.

In an embodiment, the fan blade assembly can further include a protrusion fixed to an outer wall of the middle tube, and the fan frame further comprises a limiting groove formed in an inner wall of the support tube.

In an embodiment, the limiting groove can include inclined surfaces disposed on both sides of a top end of an inner wall of the limiting groove.

In an embodiment, the shaft can further include a groove formed in the outer wall of the shaft, and the retaining ring is disposed within the groove to provide axial limitation for the bearing.

In an embodiment, the motor assembly can further include a stator configured to generate a magnetic field, and the magnetic assembly disposed within the fan blade assembly is configured to interact with the magnetic field of the stator to drive rotation of the fan blade assembly.

In an embodiment, the bearing can be disposed below the positioning ring within the middle tube, and the positioning ring is disposed around the inner wall of the middle tube to prevent the bearing from separating from within the middle tube.

BRIEF DESCRIPTION OF DRAWINGS

Aspects of the present disclosure can be understood from the following detailed description when read with the accompanying figures. It is noted that, in accordance with the standard practice in the industry, various features are not drawn to scale. In fact, the dimensions of the various features may be increased or reduced for clarity of discussion.

FIG. 1 illustrates a perspective view of a fan assembly according to aspects of the present disclosure.

FIG. 2 illustrates an exploded view of the fan assembly according to aspects of the present disclosure.

FIG. 3 illustrates a cross-sectional view of the fan assembly according to aspects of the present disclosure.

FIG. 4 illustrates a perspective view of the fan blade of the fan assembly according to aspects of the present disclosure.

FIG. 5 illustrates an exploded view of the fan blade of the fan assembly according to aspects of the present disclosure.

FIG. 6 illustrates a perspective view of the fan frame of the fan assembly according to aspects of the present disclosure.

FIG. 7 illustrates an enlarged view of area A as shown in FIG. 6.

DETAILED DESCRIPTION

Detailed descriptions and technical contents of the present invention are illustrated below in conjunction with the accompanying drawings. However, it is to be understood that the descriptions and the accompanying drawings disclosed herein are merely illustrative and exemplary and not intended to limit the scope of the present invention.

Please refer to FIGS. 1 to 5. FIG. 1 illustrates a perspective view of a fan assembly according to aspects of the present disclosure. FIG. 2 illustrates an exploded view of the fan assembly according to aspects of the present disclosure. FIG. 3 illustrates a cross-sectional view of the fan assembly according to aspects of the present disclosure. FIG. 4 illustrates a perspective view of the fan blade of the fan assembly according to aspects of the present disclosure. FIG. 5 illustrates an exploded view of the fan blade of the fan assembly according to aspects of the present disclosure.

A fan assembly 10 can include a fan frame 1 and a fan blade assembly 2. The fan frame 1 can include a support frame 4 secured to a bottom portion of the fan frame 1, with a support tube 5 extending from one side of the support frame 4. A second magnet block 6 may be positioned within the support tube 5. A motor assembly 3 (stator) can be mounted to an exterior of the support tube 5, with a PCB board 7 mounted to a bottom portion of the motor assembly 3. The motor assembly 3 can generate the electromagnetic field required to drive the rotation of the fan blade assembly 2.

The fan blade assembly 2 can include a fan blade frame 30. A shaft 21 has a end portion secured to an inner center of the fan blade frame 30. The fan blade assembly 2 can further include a middle tube 27 disposed within the support tube 5, with a first magnet block 28 that mounted at a bottom portion of the middle tube 27. A bearing 23 can be disposed within the middle tube 27, with the shaft 21 disposed within the bearing 23. Fan blades 20 can be secured to an outer surface of the fan blade frame 30. A positioning ring 22 can be disposed within an upper end of the middle tube 27, with the bearing 23 positioned below the positioning ring 22.

A gasket 24 and retaining ring 25 can be positioned at a bottom portion of the bearing 23 within the middle tube 27, and a wear-resistant disc 26 can be placed within a bottom portion of the middle tube 27. The shaft 21 can extend through the bearing 23, the gasket 24, and engaged with the retaining ring 25 via a groove 210 formed on the outer wall thereof. A magnetic assembly 8 can be positioned within the fan blade assembly 2, with the magnetic field of the magnetic assembly 8 interacted with the magnetic field of the stator of the motor assembly 3 to drive rotation of the fan blade assembly 2.

The connection between the fan frame 1 and fan blade assembly 2 can be achieved through multiple mechanisms. The first magnet block 28 and the second magnet block 6 may include magnets of opposite polarity that can magnetically attract one another. When the middle tube 27 is placed into the support tube 5, the first magnet block 28 and the second magnet block 6 can magnetically attract each other, providing axial limitation for the fan blade assembly 2 and preventing separation from the support tube 5.

Please refer to FIGS. 6-7. FIG. 6 illustrates a perspective view of the fan frame of the fan assembly according to aspects of the present disclosure. FIG. 7 illustrates an enlarged view of area A as shown in FIG. 6. Additionally, a protrusion structure 29 can be secured to an outer wall of the middle tube 27, and a limiting groove 51 can be formed in an inner wall of the support tube 5. The limiting groove 51 can engage with the protrusion structure 29, preventing rotation of the middle tube 27 and achieving radial limitation.

For enhanced installation convenience, the limiting groove 51 can include inclined surfaces on both sides of a top end of an inner wall of the limiting groove 51, which can increase the top diameter of the limiting groove 51 to facilitate entry of the protrusion structure 29, allowing for easy installation of the middle tube 27.

The operating concept may entail placing middle tube 27 directly into the support tube 5 during installation, with the protrusion structure 29 engaging the limiting groove 51 thereby creating radial limitation. The inclined surfaces allow for easy insertion, and the magnetic attraction between the first magnet block 28 and the second magnet block 6 keeps the fan blade assembly 2 secure during operation. To disassemble, simply pull the fan blade assembly 2 outward, which will detach the middle tube 27 from the support tube 5 and separate the first magnet block 28 from the second magnet block 6 from, thereby completing the disassembly for component replacement.

Therefore, embodiments disclosed herein are well adapted to attain the ends and advantages mentioned as well as those that are inherent therein. The particular embodiments disclosed above are illustrative only, as the embodiments disclosed may be modified and practiced in different but equivalent manners apparent to those of ordinary skill in the relevant art having the benefit of the teachings herein. Furthermore, no limitations are intended to the details of construction or design herein shown, other than as described in the claims below. It is therefore evident that the particular illustrative embodiments disclosed above may be altered, combined, or modified and all such variations are considered within the scope and spirit of the present disclosure. The embodiments illustratively disclosed herein suitably may be practiced in the absence of any element that is not specifically disclosed herein and/or any optional element disclosed herein. While compositions and methods are described in terms of “comprising,” “containing,” or “including” various components or steps, the compositions and methods can also “consist essentially of” or “consist of” the various components and steps. All numbers and ranges disclosed above may vary by some number. Whenever a numerical range with a lower limit and an upper limit is disclosed, any number and any included range falling within the range is specifically disclosed. In particular, every range of values (of the form, “from about a to about b,” or, equivalently, “from approximately a to b,” or, equivalently, “from approximately a-b”) disclosed herein is to be understood to set forth every number and range encompassed within the broader range of values. Also, the terms in the claims have their plain, ordinary meaning unless otherwise explicitly and clearly defined by the patentee. Moreover, the indefinite articles “a” or “an,” as used in the claims, are defined herein to mean one or more than one of the element that it introduces.