1. Field of Invention
The invention relates to a blower and an impeller structure thereof and, in particular, to a centrifugal blower and an impeller structure thereof.
2. Related Art
In the conventional electrical system, the electrical component, such as a CPU, is usually provided. The electrical component may generate heat and have decreased performance as the temperature rising. In such a case, to maintain the acceptable performance of the electrical component, the generated heat must be removed as soon as fast. To achieve this objective, a blower is usually adopted to dissipate heat quickly.
The conventional blower commonly includes a motor and an impeller structure. As shown in
In addition, even though the ribs 131 are modified, the areas of the ribs 131 are too small to provide sufficient balance effect.
It is therefore an important subject of the invention to provide a balance-free blower and an impeller structure thereof.
In view of the foregoing, the invention is to provide a blower and an impeller structure thereof, which are balance-free.
To achieve the above, a blower of the invention includes a driving device and an impeller structure. In the invention, the impeller structure includes a hub, a connecting part and a plurality of blades. The driving device connects to and drives the hub. The connecting part is disposed around the hub and has a plurality of apertures. The blades are disposed at the periphery of the connecting part. The hub, the connecting part and those blades are integrally formed as a single piece. The connecting part is a plate.
Furthermore, the invention also discloses an impeller structure, which includes a hub, a connecting part, and a plurality of blades. In the invention, the connecting part is disposed around the hub and has a plurality of apertures. The blades are disposed at the periphery of the connecting part.
As mentioned above, the blower and the impeller structure of the invention have a connecting part for connecting the hub and the blades. Besides, the connecting part has a plurality of apertures formed by, for example, an aperture-making process. Thus, the balance-free objective can be achieved according to the apertures. Comparing with the prior art, the blower and impeller structure of the invention can achieve balance-free without the specific additional balance process, the conventional modification of mold. Therefore, the manufacturer can produce the blower and impeller structure of balance-free much easier. Accordingly, the manufacturing cost can be reduced so as to increase the marketing competitiveness of the products.
The invention will become more fully understood from the detailed description given herein below illustration only, and thus is not limitative of the present invention, and wherein:
The present invention will be apparent from the following detailed description, which proceeds with reference to the accompanying drawings, wherein the same references relate to the same elements.
With reference to
Please refer to
In the present embodiment, the connecting part 233 is processed with an aperture-making process to form the apertures 237a to 237g. In more details, the base of the impeller structure 23 is formed by the ejection molding process. At this time, the connecting part 233 is a complete plate. Then, an aperture-making process, such as a punching process, is adopted to form a plurality of apertures 237a to 237g on the connecting part 233. Of course, some apertures may be formed on the impeller structure during the ejection molding process.. After that, a consequential aperture-making process is adopted to form the residual apertures so as to balance the impeller structure.
In addition, the apertures can be the rectangular apertures 237a as shown in
Furthermore, the apertures 237a to 237g may be composed of the apertures of variant shapes. In view of
In the embodiment, the apertures are symmetrically arranged around the hub 231, so that the impeller structure 23 can be equipped with the effect of balance-free. Besides, at least one filler 239 as shown in
In summary, the blower and the impeller structure of the invention have a connecting part for connecting the hub and the blades. Besides, the connecting part has a plurality of apertures formed by, for example, an aperture-making process. Thus, the effect of balance-free can be achieved according to the apertures. Comparing with the prior art, the blower and impeller structure of the invention can achieve balance-free without the specific additional balance process, the conventional modification of mold. Therefore, the manufacturer can produce the blower and impeller structure of balance-free much easier. Accordingly, the manufacturing cost can be reduced so as to increase the marketing competitiveness of the products.
Although the invention has been described with reference to specific embodiments, this description is not meant to be construed in a limiting sense. Various modifications of the disclosed embodiments, as well as alternative embodiments, will be apparent to persons skilled in the art. It is, therefore, contemplated that the appended claims will cover all modifications that fall within the true scope of the invention.
Number | Date | Country | Kind |
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094117432 | May 2005 | TW | national |