公开(公告)号：US20190382638A1

公开(公告)日：2019-12-19

申请号：US16360173

申请日：2019-03-21

Applicant: Hitachi-Johnson Controls Air Conditioning, Inc.

Inventor： Ryo OTA ,  Koji NAITO ,  Yasutaka YOSHIDA

IPC: C09K5/04 ,  F25B1/04 ,  F25B31/00

Abstract: Provided is a refrigerant composition as a mixed refrigerant containing refrigerant components of difluoromethane (HFC32), pentafluoroethane (HFC125), and hexafluoropropene (FO1216). The makeup of the refrigerant components in the mixed refrigerant is configured such that a global warming potential (GWP) is 750 or less, a vapor pressure at 25° C. is in a range of 1.4 to 1.8 MPa, and a flame retardant parameter Fmix represented by formula (1) below is 0.46 or more. Fmix=ΣiFixi  (1) Here, Fmix indicates a flame retardant parameter of the refrigerant composition, Fi indicates a flame retardant parameter of each of the refrigerant components, and xi indicates a molar fraction of each of the refrigerant components.

公开(公告)号：US20190128249A1

公开(公告)日：2019-05-02

申请号：US16223323

申请日：2018-12-18

Applicant: Hitachi-Johnson Controls Air Conditioning, Inc.

Inventor： Ryou OOTA ,  Hiroyuki AKATA ,  Yasutaka YOSHIDA ,  Koji NAITO ,  Hideyuki UEDA

IPC: F04B39/02 ,  C09K5/04 ,  F04C29/04 ,  F04C29/02 ,  F25B1/04

Abstract: An electric compressor is provided which has: in a sealed container, a compression mechanism to compress a refrigerant and an electric motor to drive the compression mechanism, wherein the refrigerant contains 20% by mass or more of hydrofluoroolefin, and a refrigerator oil stored in the sealed container contains; polyvinyl ether as a base oil; an alicyclic epoxy compound in an amount of 0.1% by mass or more and 2.0% by mass or less relative to the base oil; an aliphatic epoxy compound in an amount of 0.1% by mass or more and 2.0% by mass or less relative to the base oil; and tertiary phosphate in an amount of 0.1% by mass or more and 2.0% by mass or less relative to the base oil.