HEAT PUMP DEVICE - MITSUBISHI ELECTRIC CORP

Title:

HEAT PUMP DEVICE

Document Type and Number:

WIPO Patent Application WO/2015/156064

Kind Code:

A1

Abstract:

Provided is a heat pump device achieving long term reliability by using an insulating material that is not readily hydrolyzed. An electric motor (6) of a compressor (1) comprises a stator (6s) that is fixed to a sealed container (10) and on which a winding wire (6w) is wound with an insulating material (7) therebetween, and a rotor (6r) that is surrounded by the stator (6s). The insulating material (7) is a wholly aromatic liquid-crystal polyester (LCP) in which a main molecular chain is formed by bonding by ester bonds a monomer of para-hydroxybenzoate (PHB) as an essential component and another monomer of just ingredients having a benzene ring, and the saturated water content for the refrigeration oil is 2% or lower in 80% relative humidity at 40°C for 24 hours. That is, a chemical species that supplements active radicals that cause the decomposition reaction is generated by using a flame retardant in order to suppress the explosive decomposition reaction of an ethylene-based fluorohydrocarbon.

Inventors:

MATSUNAGA NORIAKI (JP)
OGASAWARA SHINOBU (JP)
KAGEYAMA TAKEHARU (JP)
TOYAMA SATORU (JP)
MIZUNO KOTA (JP)
HIRAKAWA YUTAKA (JP)

Application Number:

PCT/JP2015/056704

Publication Date:

October 15, 2015

Filing Date:

March 06, 2015

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)

International Classes:

F25B31/02; F04B39/00; F04C29/00; F25B1/00

Domestic Patent References:

WO2012157764A1

2012-11-22

Foreign References:

JP2004208446A	2004-07-22
JP2004052730A	2004-02-19
JP2007511644A	2007-05-10
JPH10159730A	1998-06-16

Other References: