To prevent intrusion into a heat source side unit of foreign matter accumulated in a liquid side extension pipe and a gas side extension pipe by installing a foreign matter trapping device for trapping foreign matter in a neighborhood of a connection part between both extension pipes and the heat source side unit.
In a refrigerating cycle of the refrigeration air conditioner, the heat source side unit 1 provided with a compressor 11, a heat source side heat exchanger 13, and a throttling mechanism part 14, and a utilization side unit 2 provided with a utilization side heat exchanger 23 are connected by the liquid side extension piping 3 and the gas side extension piping 4, and the foreign matter trapping device 15 for trapping foreign matter is installed in the neighborhood of the connection part between both extension pipes 3 and 4, and the heat source side unit 1.
ASAI TOSHIAKI
SHIBA HIROKUNI
Kiyoshi Yasushima
Souji Sasaki
Noboru Omura
Takanashi Norio