Air conditioner
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United States of America Patent
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Sep 20, 2022
Grant Date -
Jul 23, 2020
app pub date -
Jan 11, 2018
filing date -
Sep 27, 2017
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An air conditioner according to the present embodiment includes: an outdoor unit including a compressor, an outdoor heat exchanger, and a main expansion device, wherein a refrigerant is circulated by a refrigerant pipe configured to connect the compressor, the outdoor heat exchanger, and the main expansion device, an indoor unit including an indoor heat exchanger; and a connection pipe configured to connect the outdoor unit and the indoor unit, wherein the air conditioner has a cooling capability between 23 kW and 35 kW, a mixed refrigerant containing R32 of 50% or more is used as the refrigerant, and the refrigerant pipe comprises a ductile stainless steel pipe having a delta ferrite matrix structure of 1% or less on a basis of a grain area.
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Family
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