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Patent Searching and Data


Title:
COMPRESSOR AND AIR CONDITIONER USING SAME
Document Type and Number:
WIPO Patent Application WO/2020/031535
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a compressor in which trifluoroiodomethane (CF3I) is used as a coolant and for which performance decline caused by demagnetization of a permanent magnet is suppressed. The present invention comprises, in a sealed container: a compression mechanism 2 that compresses a coolant; and an electric motor 7 that drives the compression mechanism 2. The electric motor 7 comprises: a stator 7b that has a coil; and a rotor 7a that has a permanent magnet 33. The coolant is trifluoroiodomethane (CF3I) alone or is a mixed coolant that includes trifluoroiodomethane and another coolant. The present invention also comprises: a temperature sensor 64 that detects the discharge temperature of coolant that is discharged from the compression mechanism 2; and an inverter control means 66 that controls the electric motor 7. On the basis of a signal from the temperature sensor 64, the inverter control means 66 controls the current supplied to the electric motor 7 such that the current flowing in the electric motor 7 is at or below a 1% demagnetization start current for the permanent magnet 33 at the discharge temperature of the coolant.

Inventors:
MURAKAMI AKIHIRO (JP)
Application Number:
JP2019/025408
Publication Date:
February 13, 2020
Filing Date:
June 26, 2019
Export Citation:
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Assignee:
HITACHI JOHNSON CONTROLS AIR CONDITIONING INC (JP)
International Classes:
F04B39/00; C10M169/04; F04C29/00; F25B1/00; F25B1/04
Foreign References:
JP2009235111A2009-10-15
JP2002272167A2002-09-20
JP2006029342A2006-02-02
Attorney, Agent or Firm:
POLAIRE I.P.C. (13-11, Nihonbashikayabacho 2-chome Chuo-k, Tokyo 25, 〒1030025, JP)
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