To straighten the flow of refrigerant uniformly and to make uniform the quantity of refrigerant in respective distribution tubes by disposing the refrigerant supply tube of a strainer provided with a refrigerant straightening means on the upstream side of a distribution point and distributing refrigerant to a plurality of branch tubes thereby correcting unbalance of flow in the refrigerant supply tubes.
A strainer section 60 having larger diameter than a refrigerant supply tube 50 is fixed to the downstream side thereof, a refrigerant branch unit 52 is fixed to the downstream side of the strainer section 60 and branch tubes 54 56 are fixed to the downstream side thereof. A circular opening and a stripe lip part are provided in the strainer section 60 and a strainer coupled through a metal mesh is disposed fixedly between the opening and the lip part. Refrigerant flowing through the strainer section 60 entirely passes through the metal mesh and straightened on the downstream side thereof. The refrigerant is thereby separated uniformly to branch tubes 54, 56 by the branch unit 52 and cooling capacity of two indoor heat exchangers is made uniform.
NAKAMURA MASAO
KUSHIRO KAN
WATANABE YOSHIMI
