Air purifier

Abstract

Abstract PURPOSE:To indicate the timing for cleaning or exchanging of a dust collecting part by counting use time by an electronic counter and erasing the count number when the dust collecting part is cleaned or exchanged. CONSTITUTION:The power source of the electronic circuit part is turned off by the operation of a limit switch 3 when the dust collecting part is taken out of a body case 1. The electricity conduction time is counted by the electronic circuit in the electronic circuit part and is kept stored in a RAM. A light emitting diode 6 which indicates the exchange of the part 2 is lighted upon coming of the specified time. The switch 3 is turned off and the electronic circuit part has no power supply when the part 2 is cleaned or exchanged and therefore the count stored in the RAM automatically returns to zero.

Inventors

• 👤 Seiji Mizuno
• 👤 水野　整治

Bibliographic Details