Title:
METHOD OF CONTROLLING VARIABLE CAPABILITY TYPE AIR CONDITIONER
Document Type and Number:
Japanese Patent JP3021947
Kind Code:
B2
Abstract:
PURPOSE: To increase the maximum heating capability and to realize quick rising of heating preventing the number of revolution of a compressor from being restricted by a DC voltage of an invertor which limits counter electromotive force of a brushless DC motor thus limiting the number of revolution of the compressor.
CONSTITUTION: Phase of a motor current is shifted to cause the motor current to be increased, generated heat of a motor coil with the increased motor current is accommodated by refrigerant and the maximum heating capability is increased. In addition, phase of the motor current is shifted in an advancing direction, thereby a rotor magnetic flux of the motor is weakened with a magnetic flux generated at the motor coil, resulting in that the maximum number of revolution can be increased and the maximum heating capability is increased.
Inventors:
Kazunobu Ohyama
Yasuhito Yanagida
Ichiro Ohnishi
Yasuhito Yanagida
Ichiro Ohnishi
Application Number:
JP9863092A
Publication Date:
March 15, 2000
Filing Date:
March 24, 1992
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
F24F11/02; F24F11/48; F24F11/62; F24F11/86; F24F11/873; F25B1/00; H02P6/06; H02P6/08; H02P6/15; F24F140/00; F24F140/50; (IPC1-7): F25B1/00; F25B1/00
Domestic Patent References:
| JP63161363A | ||||
| JP3122459A |
Attorney, Agent or Firm:
Yasuo Itaya