Title:
【発明の名称】空気清浄機の制御回路
Document Type and Number:
Japanese Patent JPH0661420
Kind Code:
B2
Abstract:
PURPOSE:To effect a stable automatic operation easily by providing a control circuit for actuating and stopping a machine body automatically depending on outputs of a gas sensor to detect soil of the interior of room and changing over supply voltage for the gas sensor so that said voltage at the stopping of machine body is made lower than that at the actuating thereof. CONSTITUTION:By the arrangement such that a motor driven blower 2 is actuated, i.e., ON, when the output Vo of a gas sensor 11 rises, supply voltage as well as the output Vo of the gas sensor 11 rises, so that hysteresis is generated, following which, when the output of the sensor 11 falls, the blower 2 is caused to stop, i.e., OFF, so that the output of the sensor 11 falls due to the hysteresis. By controlling the motor driven blower 2 depending on output Vo of the gas sensor 11 in such a manner like this, hysteresis to stabilize actuating and stopping operations is obtained, so that unstable operation such that starting and stoppage are repeated during a short period of time is avoided, enabling thereby a stable automatic operation.
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Inventors:
Nobuhiro Hayashi
Shuji Abe
Tadashi Matsushiro
Seiichi Ueno
Shuji Abe
Tadashi Matsushiro
Seiichi Ueno
Application Number:
JP27671488A
Publication Date:
August 17, 1994
Filing Date:
November 01, 1988
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
B01D46/44; B03C3/66; F24F7/00; (IPC1-7): B01D46/44; B03C3/66; F24F7/00
Attorney, Agent or Firm:
Akira Kobiji (2 outside)
Next Patent: チップソー