Lubricant refrigerant composition for hydrofluorocarbon (HFC) refrigerants
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F25B-043/02
출원번호
US-0236707
(1999-01-25)
발명자
/ 주소
Jill Ellen Oberle
Thomas Edward Rajewski
출원인 / 주소
The Lubrizol Corporation
대리인 / 주소
Samuel B. Laferty
인용정보
피인용 횟수 :
33인용 특허 :
19
초록▼
A lubricant-refrigerant composition contained within a compression refrigeration system is disclosed which comprises(A) at least one fluorine-containing hydrocarbon refrigerant containing 1 to 3 carbon atoms, further wherein fluorine is the only halogen in said fluorine-containing hydrocarbon with t
A lubricant-refrigerant composition contained within a compression refrigeration system is disclosed which comprises(A) at least one fluorine-containing hydrocarbon refrigerant containing 1 to 3 carbon atoms, further wherein fluorine is the only halogen in said fluorine-containing hydrocarbon with the proviso that 1,1,1,2-tetrafluoroethane is not the sole refrigerant; and(B) at least one lubricant comprising(1) a hydrocarbyl substituted arene,(2) a phosphate ester,(3) an organic ester of a carboxylic acid and an alcohol,(4) a perfluoropolyethylene,(5) an ether;(6) a polyether;(7) a polyalphaolefin; or(8) a mineral oil;wherein at a temperature of above -60.degree. C. a phase separation occurs such that at least two phases are formed, said phases being a refrigerant rich phase and a lubricant rich phase, further wherein the lubricant rich phase resides below the refrigerant rich phase.
대표청구항▼
1. A lubricant-refrigerant composition contained within a compression refrigeration system, wherein said compression refrigeration system comprises a compressor, condenser, evaporator, expansion valve, oil return valve, and oil return line; and said lubricant-refrigerant composition comprises;(A) at
1. A lubricant-refrigerant composition contained within a compression refrigeration system, wherein said compression refrigeration system comprises a compressor, condenser, evaporator, expansion valve, oil return valve, and oil return line; and said lubricant-refrigerant composition comprises;(A) at least one fluorine-containing hydrocarbon refrigerant containing 1 or 2 carbon atoms, further wherein fluorine is the only halogen in said fluorine-containing hydrocarbon; and (B) at least one lubricant comprising (1) a hydrocarbyl substituted arene, (2) a phosphate ester, (3) an organic ester of a carboxylic acid and an alcohol, (4) a perfluoropolyethylene, (5) an ether of the structure [EQU17] wherein R3 is a hydrocarbon group containing from 1 to 20 carbon atoms, R4 is independently hydrogen, methyl or ethyl, R5 is hydrogen or an aliphatic group, b is an integer of from 1 to 10 and a, when a≠0, is an integer such that the product of a and b is at least two; (6) a polyether wherein the polyether is prepared by polymerizing an ether of the structure CH2.dbd.CH(R1)nO-R2 wherein R1 is a methylene group, n is 0, 1 or 2 and R2 is an aliphatic group containing from 1 to 4 carbon atoms, or (7) a polyalphaolefin; wherein at a temperature of above -60.degree. C. that a phase separation occurs such that at least two phases are formed, said phases being a refrigerant rich phase and a lubricant rich phase, further wherein the lubricant rich phase resides below the refrigerant rich phase.
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