ELECTRICAL APPARATUS AND VACUUM CLEANER

PROBLEM TO BE SOLVED: To suppress a higher harmonic current, which is generated when suction force of an electric air blower is controlled by controlling the power of the electric air blower by phase control, in a vacuum cleaner with controlled suction force of the electric air blower. SOLUTION: Thi...

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Bibliographic Details
Main Author IMAI HIDETOSHI
Format Patent
LanguageEnglish
Published 19.01.2001
Edition7
Subjects
COFFEE MILLS
CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS
CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DOMESTIC ARTICLES OR APPLIANCES
DOMESTIC WASHING OR CLEANING
ELECTRICITY
FURNITURE
GENERATION
HUMAN NECESSITIES
SPICE MILLS
SUCTION CLEANERS IN GENERAL
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Summary:PROBLEM TO BE SOLVED: To suppress a higher harmonic current, which is generated when suction force of an electric air blower is controlled by controlling the power of the electric air blower by phase control, in a vacuum cleaner with controlled suction force of the electric air blower. SOLUTION: This vacuum cleaner is structured so that the power of an electric air blower for suction is controlled by a phase control means 17. The phase control means 17 makes phase control in a phase control angle range smaller than 90 deg. of a phase control angle, as well as in a phase control angle range larger than 90 deg.. A phase control angle range larger than 90 deg. is set closer to 90 deg. than the phase control angle range of smaller than 90 deg..
Bibliography:Application Number: JP19990176450