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High-efficiency-electrostatic-air-filter-device

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High-efficiency electrostatic air filter device

Details

Inventors: Masuda, Senichi; Sugita, Naoki;
Assignee: Midori Anzen Co., Ltd. (Tokyo, JP)
Primary Examiner: Nozick; Bernard
Assistant Examiner:
Attorney, Agent or Firm: Prutzman, Kalb, Chilton & Alix

An improved high-efficiency electrostatic air filter device which has a high efficiency of dust collection and a long service life. The device is composed of a charging section having a plurality pairs of electrodes to charge the dust particles in the gas to be treated; and a dust collecting section which is provided with a corrugated filter medium and spacer electrodes that are disposed in the troughs of the corrugations of the filter medium, and one of each pair of the electrodes in the charging section and the specer electrodes on one side of the filter medium in the dust collecting section are applied with high electric voltage.

DETAILED DESCRIPTION It is, therefore, the primary object of the present invention to provide an improved high-efficiency air filter device which is free of the above-described disadvantages.
Another object of the present invention is to provide an electrostatic air filter which is able to treat dust-laden gas with high efficiency without the need of a pre-filter.
A further object of the present invention is to provide an air filter device which has quite a long life and can be used for a long period of time without requiring any troublesome operations or maintenance work.
Still a further object of the present invention is to provide an air filter device which is compact but not complicated in structure and which does not require a large floor space.
Pursuant to the above object, in the embodiment of the electrostatic air filter device of the present invention, the suspended particles in the gas to be treated are electrically charged before the gas is passed through a filter medium; the charged particles are then collected on the surface of dust collecting electrodes that are disposed in the space formed by the filter medium to which a high electric voltage has been applied.
The remaining particles are filtered off by the filter medium, thereby attaining a quite high efficiency of dust collection and a long service life.

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