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Patent Searching and Data


Title:
REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/207661
Kind Code:
A1
Abstract:
The present invention comprises: a compressor (111) that compresses a refrigerant; a motor that is disposed in the compressor (111) and that generates a force for compressing the refrigerant, the force being generated by the rotation of a rotor due to a plurality of windings receiving voltage; and a winding switching unit (116) that carries out switching with respect to a plurality of winding states, by changing the connections of a plurality of windings. If the rotation speed of the rotor becomes higher than a predetermined value, the winding switching unit (116) switches to, from among the plurality of winding states, a first winding state that is different from a second winding state which has the highest efficiency with respect to the rotation speed of the rotor.

Inventors:
NISHIYAMA Takumi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
ARISAWA Koichi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
NIGO Masahiro (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
HATAKEYAMA Kazunori (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2018/016702
Publication Date:
October 31, 2019
Filing Date:
April 25, 2018
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
International Classes:
F25B1/00
Domestic Patent References:
WO2014002251A12014-01-03
Foreign References:
JPS6012533B21985-04-02
JP2016085005A2016-05-19
JPH05272823A1993-10-22
JPS5857669U1983-04-19
Attorney, Agent or Firm:
MAEDA Minoru et al. (MAEDA & YAMAGATA, Koda Bldg. 4F 16-2, Yoyogi 2-chome, Shibuya-k, Tokyo 53, 〒1510053, JP)
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