Patent ID: 6158229
Filing Date: 2000-12-12
Classification: F25B

Abstract:
A method of reusing refrigerant in a heat exchanger being transferred from a first location to a second location, said heat exchanger including an interior instrument and an exterior instrument, a first refrigerant piping arranged in said interior instrument and having an interior heat exchanger, a second refrigerant piping arranged in said exterior instrument and having an exterior heat exchanger, connecting pipes connected with said first refrigerant piping and said second refrigerant piping to form refrigerant circulating channel to circulate a refrigerant, two on-off valves separately provided on upper and lower reaches of said second refrigerant piping in which the refrigerant flows through said exterior heat exchanger, and two on-off valves separately provided on upper and lower reaches of said first refrigerant piping in which the refrigerant flows through the interior heat exchanger, said method comprising the steps of:closing said four on-off valves before physical transfer of the heat exchanger from the first to the second location;removing said connecting pipes from both said first refrigerant piping and said second refrigerant piping;connecting said connecting pipes or the like to said first refrigerant piping and said second refrigerant piping after transfer of the heat exchanger to said second location; andsupplying any shortage of refrigerant to said refrigerant circulating channel, and opening said closed four on-off valves.