초록 ▼

An apparatus for recovering and recycling refrigerant from an air conditioning unit. The apparatus includes a combined oil separator and heat exchanger for condensing purified refrigerant and for vaporizing contaminated refrigerant. The combined oil separator and heat exchanger includes a canister h

An apparatus for recovering and recycling refrigerant from an air conditioning unit. The apparatus includes a combined oil separator and heat exchanger for condensing purified refrigerant and for vaporizing contaminated refrigerant. The combined oil separator and heat exchanger includes a canister having a top wall, a bottom wall, and a substantially cylindrical side wall. The canister further includes a high pressure region comprising heat exchange coils and having high pressure inlet for providing purified refrigerant vapor and high pressure outlet for removing purified refrigerant liquid, and a low pressure region having low pressure inlet for introducing contaminated refrigerant proximate the heat exchange coils, low pressure outlet through the top wall for removal of refrigerant vapor, and condensed oil outlet for removal of condensed oil. By introducing the contaminated refrigerant proximate the heat exchange coils, improved separation efficiency is obtained. A method for utilizing the combined oil separator and heat exchanger is additionally provided.

대표청구항 ▼

[ We claim:] [1.] An apparatus for recovering and recycling refrigerant from an air conditioning unit comprising:a contaminated refrigerant recovery line for conveying contaminated refrigerant;a combined oil separator and heat exchanger for condensing purified refrigerant and for vaporizing contamin

[ We claim:] [1.] An apparatus for recovering and recycling refrigerant from an air conditioning unit comprising:a contaminated refrigerant recovery line for conveying contaminated refrigerant;a combined oil separator and heat exchanger for condensing purified refrigerant and for vaporizing contaminated refrigerant, the combined oil separator and heat exchanger comprising a canister having a top wall, a bottom wall, and a substantially cylindrical side wall, the canister including:high pressure region comprising heat exchange coils and having high pressure inlet for providing purified refrigerant vapor and high pressure outlet for removing purified refrigerant liquid; andlow pressure region having low pressure inlet for introducing contaminated refrigerant proximate the heat exchange coils, low pressure outlet through the top wall for removal of refrigerant vapor, and condensed oil outlet for removal of condensed oil;wherein the low pressure inlet comprises an evaporator injector including a tube for conveying contaminated refrigerant inside the combined oil separator and heat exchanger, said orifices directed downward for spraying contaminated refrigerant onto the coils;dryer for removal of moisture from vapor refrigerant from the low pressure outlet of the combined oil separator and heat exchanger;compressor for compressing refrigerant from the dryer to provide purified refrigerant for feeding to the high pressure inlet in the combined oil separator and heat exchanger; andreceiver tank for receiving condensed purified refrigerant from the high pressure outlet of the combined oil separator and heat exchanger.