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公开(公告)号：US20190128249A1
公开(公告)日：2019-05-02
申请号：US16223323
申请日：2018-12-18
Inventor： Ryou OOTA , Hiroyuki AKATA , Yasutaka YOSHIDA , Koji NAITO , Hideyuki UEDA
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.
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公开(公告)号：US20200208882A1
公开(公告)日：2020-07-02
申请号：US16818058
申请日：2020-03-13
Inventor： Ryo OTA , Koji NAITO , Hideyuki UEDA
Abstract: A refrigeration cycle apparatus including, a compressor, a condenser, a pressure reducer, and an evaporator that evaporates the refrigerant. The refrigerant is a mixed refrigerant which contains refrigerant components of difluoromethane, pentafluoroethane and trifluoroiodomethane and which has a global warming potential and a specific vapor pressure. The compressor is a sealed electric compressor which includes a compression mechanism and a motor to drive this compression mechanism, and which is charged with a refrigerator oil to lubricate a sliding portion, and the refrigerator oil is polyvinyl ether oil, and contains 0.1% by mass to 2.0% by mass of a stabilizer constituted by at least one of an alicyclic epoxy compound and a monoterpene compound, 0.1% by mass to 2.0% by mass of an acid scavenger constituted by an aliphatic epoxy compound, and 0.1% by mass to 2.0% by mass of an extreme pressure agent constituted by tertiary phosphate.
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公开(公告)号：US20210269692A1
公开(公告)日：2021-09-02
申请号：US17255467
申请日：2019-06-11
Inventor： Ryo OTA , Koji NAITO , Hideyuki UEDA
IPC: C09K5/04 , F24F1/0007 , F24F1/06 , F25B13/00
Abstract: The present invention is to provide a refrigeration cycle apparatus that has a low GWP of 750 or less and low flammability and that maintains performance and safety for an extended period of time. The refrigeration cycle apparatus includes a compressor (300) that compresses a refrigerant, a condenser that condenses the refrigerant compressed by the compressor (300), a pressure reducer that reduces a pressure of the refrigerant condensed by the condenser, and an evaporator that evaporates the refrigerant reduced in pressure by the pressure reducer. The refrigerant is a mixed refrigerant which contains difluoromethane, pentafluoroethane, and trifluoroiodomethane and which has a global warming potential of 750 or less and a vapor pressure at 25° C. of 1.1 MPa or more and 1.8 MPa or less. The compressor (300) is a sealed electric compressor in which a refrigerator oil to lubricate a sliding portion is charged. The refrigerator oil is polyol ester oil and has a water content of 300 ppm by weight or less.
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公开(公告)号：US20180164007A1
公开(公告)日：2018-06-14
申请号：US15577370
申请日：2015-05-28
Inventor： Hiroaki TSUBOE , Atsuhiko YOKOZEKI , Masaki UNO , Hideyuki UEDA
CPC classification number: F25B43/043 , F25B1/00 , F25B13/00 , F25B43/04 , F25B47/003 , F25B2313/006 , F25B2400/121
Abstract: The present invention is an air conditioner which includes a compressor, an outdoor heat exchanger, an outdoor expansion valve, and an indoor heat exchanger that have been successively connected by a pipeline, and in which a hydrofluoroolefin-containing refrigerant is to be used, the air conditioner being characterized in that an oxygen adsorption device in which a synthetic zeolite is used as an adsorbent has been disposed somewhere in the pipeline, the synthetic zeolite having a pore diameter which is larger than the size of the oxygen molecule but smaller than the size of the hydrofluoroolefin molecule.
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