PIPE CLEANING METHOD AND PIPE CLEANING DEVICE FOR REFRIGERATION APPLIANCES.

摘要

A pipe cleaning method for a refrigeration apparatus in which the refrigerant pipes (2A, 2B) are cleaned in a refrigerant circuit, in which the method comprises: a first stage of forming a single closed circuit (13 ) by connecting a connecting conduit (12) for cleaning the refrigerant pipes (2A, 2B) in the refrigerant circuit to two ends of the refrigerant pipes (2A, 2B) and charging a refrigerant in the circuit closed (13); a second stage of cleaning the refrigerant pipes (2A, 2B) by circulating the refrigerant in the closed circuit (13), so that the refrigerant in the liquid phase can circulate through the refrigerant pipes (2A, 2B ) by the means of the transport means (40) provided in the connecting conduit (12); and a third stage after the cleaning stage, dismantling the connection conduit (12) of the refrigerant pipes (2A, 2B); characterized in that: the second stage includes circulating the refrigerant in the closed circuit (13), and concurrently heating the liquid refrigerant by means of separation means (50) during the passage of the refrigerant through the connection conduit (12) to change the phases thereof from liquid to gas, thus separating the foreign substance from the refrigerant, cooling the refrigerant in the form of gas to change the phase thereof from gas to liquid again, and then supplying the liquid refrigerant to the refrigerant pipes (2A , 2B) by means of transport (40).