초록 ▼

This invention relates to a falling film evaporator which is arranged to cause a liquid film to flow downward to thereby effect heat exchange using evaporation. In a space of an evaporating compartment, a gas-liquid separator is disposed to communicate with a compressor which constitutes a part of a

This invention relates to a falling film evaporator which is arranged to cause a liquid film to flow downward to thereby effect heat exchange using evaporation. In a space of an evaporating compartment, a gas-liquid separator is disposed to communicate with a compressor which constitutes a part of a refrigeration cycle.

대표청구항 ▼

In a falling film evaporator in which a plurality of heat exchanger tubes are provided in a shell to form an evaporating compartment utilizing a falling film, a liquid-film flow of a liquid refrigerant being formed over outside surfaces of said heat exchanger tubes to effect heat exchange between sa

In a falling film evaporator in which a plurality of heat exchanger tubes are provided in a shell to form an evaporating compartment utilizing a falling film, a liquid-film flow of a liquid refrigerant being formed over outside surfaces of said heat exchanger tubes to effect heat exchange between said liquid refrigerant and fluid flowing in said heat exchanger tubes, the improvement comprising a gas-liquid separating means which is arranged in a space of said evaporating compartment to communicate with a compressor which comprises a part of a refrigeration cycle; said gas-liquid separating means comprising a pipeline in which a lubricating oil in said evaporating compartment is intermingled with a refrigerant to be supplied from an evaporator to said compressor and through which the thus-intermingled fluid is supplied to said compressor and further comprising means for introducing a liquid refrigerant and a lubricating oil collected in a lower portion of the evaporating compartment into a refrigerant discharge pipeline by utilization of a pressure difference between a pressure in the evaporating compartment and a pressure in the refrigerant discharge pipeline, said pipeline serving to cause a gas refrigerant within the evaporating compartment to be discharged.