Patent ID: 6443502
Filing Date: 2002-09-03
Classification: B60H,F16L,F25B,Y10S

Abstract:
A leakage restriction device for a refrigeration cycle through which a refrigerant flows, the refrigeration cycle having a pipe connection portion at which refrigerant pipes are connected, the pipe connection portion being disposed in air, the leakage restriction device comprising:a first leakage restriction member disposed on an air side in the pipe connection portion for restricting the refrigerant from leaking into the air; a second leakage restriction member disposed on a refrigerant side in the pipe connection portion for restricting the refrigerant from leaking into the air, wherein: the first leakage restriction member has a gas permeability lower than that of the second leakage restriction member; the first leakage restriction member has a blistering-resistance which is inferior to that of the second leakage restriction member; and a surface of the first leakage restriction member is deformed to have a gas permeability lower than that of the first leakage restriction member.