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US 6,635,106 B2Granted
Dust collecting apparatus and air-conditioning apparatus
AssigneeMatsushita Seiko Co., Ltd.
InventorsRyou Katou, Yoshikazu Tashiro
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AssigneeMatsushita Seiko Co., Ltd.
InventorsRyou Katou, Yoshikazu Tashiro
Estimating the term…
A dust is electrostatically charged using an ion-releasing device adapted to release only ionized air with occurrence of a corona discharge, thereby reducing the amount of power consumed and the amount of ozone generated to the utmost. An electric dust collector includes a charging section having a discharging electrode and an earthed electrode, a dust-collecting section having a voltage-applied electrode and an earthed electrode and an air feed fan. Dust introduced into the dust collector is electrostatically charged by breaking the air insulation by a corona discharge occurring in the charging section to produce ionized air and then removed in the dust-collecting section where an electric field is formed. However, because the corona discharge is generated, there is a problem that the discharged current is large, and the amount of power consumed and the amount of ozone generated are large.
A dust collector comprising an ion-releasing means for releasing ions without generation of a corona discharge, and a dust-collecting section placed at a location downstream of the ion-releasing means, wherein the ion releasing means includes a single or a plurality of discharging electrodes which are needle-shaped electrodes having sharp tip ends and discharged current per one needle-shaped electrode is 1 μA or less.
A dust collector comprising an ion-releasing means for releasing ions without generation of a corona discharge, and a dust-collecting section placed at a location downstream of the ion-releasing means, wherein the ion-releasing means includes a single or a plurality of discharging electrodes which are linear electrodes, and earthed electrodes mounted on opposite sides of the linear electrode, the electrode connected to earth to provide discharged current of 1 μA or less per 0.1 m of the linear electrode upon application of a high voltage to the linear electrode, said earthed electrode being coated with an insulating material or a semiconductor.
A dust collector, comprising an ion-releasing means for releasing ions without generation of a corona discharge, and a dust-collecting section placed at a location downstream of the ion-releasing means, wherein the ion-releasing means includes a single or a plurality of discharging electrodes which are linear electrodes, and earthed electrodes mounted on opposite sides of the linear electrode, the electrode connected to earth to provide discharged current of 1 μA or less per 0.1 m of the linear electrode upon application of a high voltage to the linear electrode, said earthed electrode being coated with an insulating material or a semiconductor, and said ion releasing means releases minus ions.
Dependencies are inferred from the claim text.