Title:
圧縮機ユニットおよびそれを用いた冷凍機
Document Type and Number:
Japanese Patent JP4175258
Kind Code:
B2
Abstract:
A compressor unit includes a compressor, an inverter for driving the compressor, and an over-current protective device for protecting the inverter against an output over-current. A control part controls the output voltage of the inverter when the compressor is started based on a ambient temperature detected by a temperature sensor so that the input current of the inverter does not exceed the working current value of the over-current protective device having temperature characteristics varying according to the ambient temperature. Thereby, a start torque can be increased by increasing the output voltage of the inverter without operating the over-current protective device when the compressor is stated at a low temperature when a start load is increased.
Inventors:
Yasunori Maekawa
Application Number:
JP2003582419A
Publication Date:
November 05, 2008
Filing Date:
April 09, 2003
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
F04B49/06
Attorney, Agent or Firm:
Hiroshi Yamazaki
Atsushi Maeda
Yukinori Nakakura
Atsushi Maeda
Yukinori Nakakura