Electric cleaner

• US 4,920,605 A
• Filed: 10/17/1988
• Issued: 05/01/1990
• Est. Priority Date: 10/16/1987
• Status: Expired due to Term

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Takashima, Yoshinori
• Primary Examiner(s): MOORE, CHRISTOPHER K
• Application Number:
  US07/258,611
• Time in Patent Office: 561 Days
• Field of Search: 15/319, 15/339, 15/412
• US Class Current: 15/319
• CPC Class Codes: A47L 9/2815 using optical detectors
• CPC Class Codes: A47L 9/2842 Suction motors or blowers
• CPC Class Codes: A47L 9/2857 User input or output elements for control, e.g. buttons, switches or displays
• CPC Class Codes: Y02B 40/00 Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Abstract

An electric cleaner for use in households and/or industry, is provided with a control system for running the blower of the motor cleaner at a constant speed in spite of the speed set by a control unit when dust has not been detected by a dust sensor, and to effect an increase in the speed of the blower motor up to the speed set by the control unit when dust has been detected, whereby the electric cleaner is capable of effecting a cleaning operation quietly with its operational properties being improved.

Claims

1. An electric cleaner comprising a main body including a blower motor whose speed is continuously varied by a control unit, and a dust sensor unit provided in a suction opening or between a suction opening and the main body, and a control means for running the blower motor at a predetermined constant speed irrespective of the speed selected by the control unit in the absence of dust being detected by the dust sensor unit, and for increasing the speed of the blower motor up to a speed selected by the control unit when dust has been detected by the dust sensor unit.

2. An electric cleaner comprising a main body including a blower motor whose speed is continuously varied by a control unit, and a dust sensor unit provided in a suction opening or between a suction opening and the main body, and a control means for reducing the speed of the blower motor by a constant percentage as compared with the speed selected by the control unit in the absence of dust being detected by the dust sensor unit, and for running the blower motor at the speed selected by the control unit when dust has been detected by the dust sensor unit.