Refrigeration cycle apparatus

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12228135
APP PUB NO 20240410368A1
SERIAL NO

18811163

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Importance

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Abstract

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Hydrocarbon-type refrigerants tend to dissolve in refrigerating machine oils, which may result in a decrease in the viscosity of the refrigerating machine oils and cause excessive wear of the sliding portions inside the compressors. An air conditioning apparatus includes a refrigerant circuit in which a compressor, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger are sequentially connected and a refrigerant is circulated. The compressor includes a sliding portion including a first bearing metal or an Oldham ring. At least one of two members slidable with each other in the sliding portion is formed of aluminum or aluminum alloy. The refrigerant circulating through the refrigerant circuit is a hydrocarbon-type refrigerant. A refrigerating machine oil used in the compressor has a refrigerant solubility of 30% or less at a pressure of 1.9 MPa and at a temperature of 60° C.

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Patent Owner(s)

Patent OwnerAddress
DAIKIN INDUSTRIES LTDOSAKA CITY OSAKA OF JAPAN OSAKA-SHI OSAKA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kawae, Arisa Osaka, JP 6 0
Matsuura, Hideki Osaka, JP 40 322
Tanaka, Masaru Osaka, JP 175 2217
Terai, Haruka Osaka, JP 2 1

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