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Airflow generator

Airflow generator description/claims

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1. Field of the Invention

The present invention relates generally to an airflow generator, and more particularly to an innovative generator, which can generate airflow through a magnetic induction principle, enabling application to a heat-radiating structure.

2. Description of Related Art Including Information Disclosed Under 37 CFR 1.97 and 37 CFR 1.98

Electronic devices generate heat energy depending upon the scale of operation and capacity. Currently, the commonly used heat-radiating structure of electronics is a radiator fan, whose volume is decreased in response to the developmental trend of lightweight electronics.

However, the radiator fan, mainly composed of a rotor, a stator and an annular fan blade, is limited to cylindrical space. When the annular fan blade is shrunk to a certain degree, the fan blade's heat-radiating effect may become poor. In addition, it is difficult mold and manufacture a such a fan, and there is a higher chance of a defect. Such a radiator fan is often applied to a desktop or laptop computer. Owing to rapidly increasing functions and operational capability, some handheld electronic products (e.g. mobile phones, PDA, digital camera) will generate more heat energy than ever before. The handheld electronic products may also be affected by excessively high temperatures, resulting in shorter service life and greater hazards. Thus, the typical radiator fan cannot bring about a satisfactory heat-radiating effect for small-sized electronic products, posing a challenge for the industry operators.

Thus, to overcome the aforementioned problems of the prior art, it would be an advancement in the art to provide an improved structure that can significantly improve efficacy.

To this end, the inventor has provided the present invention of practicability after deliberate design and evaluation based on years of experience in the production, development and design of related products.

The airflow generator of the present invention has a unique structure with respect to the plate, magnetic brake and housing. Unlike a typical radiator fan, the controller of the magnetic brake is used to control the magnetization state of the magnetic coil, thus yielding suction and repulsion with magnetic poles of the plate, and driving the swinging end of the plate. As compared with a typical radiator fan disclosed in the prior art, the volume of the present invention could be minimized. However, an efficient heat-radiating effect could be achieved to resolve the bottleneck of a typical radiator fan in this regard. The airflow generator of the present invention could be widely applied to the heat-radiating structures of various small-sized electronic devices (e.g. mobile phones, PDA, digital camera), providing efficient heat-radiating effect with improved applicability.

Although the invention has been explained in relation to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of the invention as hereinafter claimed.

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• Utility Patent

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