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Patent Searching and Data


Title:
AIR CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/025345
Kind Code:
A1
Abstract:
This air conditioning device circulates refrigerant through, in order, a compressor, a first heat exchanger, an expansion valve, and a second heat exchanger. The compressor has a motor that includes a first stator coil and a second stator coil. The air conditioning device comprises a first inverter, a second inverter, and a control unit. In a situation in which the first inverter has failed, the control unit is configured to stop the first inverter. When the motor speed is higher than a reference speed in a situation in which the first inverter has failed, the control unit is configured so as to control the second inverter so that the motor speed is reduced to the reference speed or lower. When the motor speed is lower than the reference speed in a situation in which the first inverter has failed, the control unit is configured so as to control the second inverter so that the motor speed is maintained.

Inventors:
TOYODOME, Shinya (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
ARISAWA, Koichi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
UMEHARA, Shigeo (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2016/072768
Publication Date:
February 08, 2018
Filing Date:
August 03, 2016
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
International Classes:
F24F11/02; F25B1/00
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (Nakanoshima Central Tower, 2-7 Nakanoshima 2-chome, Kita-ku, Osaka-sh, Osaka 05, 〒5300005, JP)
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