Apparatus and method for checking for leakage of refrigerant gas in air conditioning system

Abstract

Provided is an apparatus that can prevent entry of foreign matter and moisture when compressed air is injected into an air conditioning system and can more reliably and promptly check for leakage of refrigerant gas in the air conditioning system. The apparatus includes a branching device including an inflow port through which dry compressed air having a predetermined moisture content or less flows in, an outflow port through which the dry compressed air flows out, and an opening and closing valve that controls a flow rate of the dry compressed air between the inflow port and the outflow port, and a pressure gauge that measures a pressure inside the air conditioning system. The apparatus preferably further includes a filter on the upstream side of the gas inflow port. The apparatus further includes a channel through which the dry compressed air is fed from the outflow port to a service valve of the air conditioning system.

Dependencies are inferred from the claim text.