PURPOSE: To improve a technology for bleeding non-condensing gas mixed in refrigerant gas of a freezer, make a remarkable reduction of a rate of inclusion of refrigerant gas dispersed into surrounding atmosphere together with the non-condensing gas, reduce economical deficit and prevent pollution caused by refrigerant.
CONSTITUTION: Mixed gas collected by a separator 4 is guided into a pressure reducing tank 9 without discharging it from a discharging device 6 into surrounding atmosphere, refrigerant is absorbed into oil 15 and gas not absorbed (non- condensing gas scarcely containing refrigerant gas) is dispersed from the discharging device 18 into the surrounding atmosphere. Oil 15 absorbing refrigerant gas at the pressure reducing tank 9 is reduced in its pressure and is heated to vaporize the refrigerant gas and then the vaporized refrigerant gas is returned back from a vacuum pump 20 to a freezer 1.
ISHII SUSUMU
KUMAKI MICHIO
GENBA TAKEO
Next Patent: JPS6129737