Title:
OPERATION OF ELECTRIC CLEANER
Document Type and Number:
Japanese Patent JPS6443224
Kind Code:
A
Abstract:
PURPOSE: To accelerate the starting time of a cleaner by starting a brushless DC motor to a low-speed region after the power voltage is established, and driving it to the high-speed region in response to an operation instruction. CONSTITUTION: When an electric outlet plug is inserted and the power voltage of a control circuit is established, a current for reference positioning flows, a low-speed synchronous start begins after 1sec elapses, and the brushless operation is started after 2sec elapse. A motor 6 is started to the number of revolutions of N1 to wait for an operation instruction. When the operation instruction is given, the motor 6 is driven to the number of revolutions of N2 in a high-speed region. The motor 6 can be driven to the high-speed region in a short time of 1-2sec, and an unpleasant feeling that the starting time is long is not given to a user.
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Inventors:
OHARAGI HARUO
TAWARA KAZUO
ENDO TSUNEHIRO
OKUYAMA TOSHIAKI
TOYOSHIMA HISANORI
TAWARA KAZUO
ENDO TSUNEHIRO
OKUYAMA TOSHIAKI
TOYOSHIMA HISANORI
Application Number:
JP19979487A
Publication Date:
February 15, 1989
Filing Date:
August 12, 1987
Export Citation:
Assignee:
HITACHI LTD
International Classes:
A47L9/28; H02P6/06; H02P6/08; H02P6/17; H02P6/18; H02P6/182; H02P6/21; (IPC1-7): A47L9/28; H02P6/02
Attorney, Agent or Firm:
Katsuo Ogawa
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