Title:
CONTROL METHOD FOR FAN MOTOR
Document Type and Number:
Japanese Patent JP2004150697
Kind Code:
A
Abstract:
To provide a control method for a fan motor preventing frost from dew formation even while adopting a direct current brushless motor with high operation efficiency and little heat generation as the fan motor for circulating cold air in a refrigerator.
The direct current brushless motor is adopted as the fan motor circulating cold air in the refrigerator. During defrosting, an alternating current with a long cycle of, for example, several seconds is supplied to a U phase, a V phase, and a W phase of a coil 11 of the direct current brushless motor in defiance of a signal of a position detecting element.
Inventors:
MASUI KIYOSHI
Application Number:
JP2002315724A
Publication Date:
May 27, 2004
Filing Date:
October 30, 2002
Export Citation:
Assignee:
DAIWA INDUSTRIAL LTD
International Classes:
F25D17/06; (IPC1-7): F25D17/06
Attorney, Agent or Firm:
Bunji Kamada
Higashio Masahiro
Torii Kazuhisa
Higashio Masahiro
Torii Kazuhisa