To provide an air conditioner wherein such a problem is solved that air and water mix in a cycle due to imperfect piping connection and insufficient vacuum suction.
An outdoor unit 100 includes a three-way valve 11, a compressor 1 that is a compression unit, an outdoor heat exchanger 2 that is an outdoor heat exchanger, an expansion valve 3 for decompressing and expanding a refrigerant, a shut-off valve 4, a gas bottle 5 having an adsorbent 6 that adsorbs oxygen and water, and a two-way valve 7. A nitrogen gas is enclosed in an indoor unit 101 and a carbon dioxide for air displacement is enclosed in the gas bottle 5. The gas for air displacement is used for secure installation operation, and a highly reliable device is provided by removing the oxygen and water in the cycle after the installation.
MARUMOTO KAZUHIKO
FUJITAKA AKIRA
Daisuke Nagano
Kentaro Fujii