EP0492777A2
Expired / Lapsed
EP
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Multi-component refrigerant
Assignee: Star Refrigeration Ltd
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Filing: 1991-10-03
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Granted: —
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Expires: 2011-10-03
Abstract
Abstract A multi component refrigerant composition for use in vapour compression refrigerators and avoiding the use of ozone-depleting chlorofluorocarbons comprises a three component mixture of: (i) a major portion comprised of chlorodifluoromethane (R22) or pentafluoroethane (R125); (ii) R125 or octafluoropropane (R218); and (iii) propylene (R1270) or propylene-propane (R290) mixtures; in non-flammable proportions. r
Inventors
- 👤 Stephen Forbes Pearson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 13:19
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/02; C09K5/04; C09K5/041; C09K5/044; C09K5/045; C09K2205/00; C09K2205/10; C09K2205/12; C09K2205/122; C09K2205/128; C09K2205/40; C09K2205/42; C09K2205/47
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
51 words
A non-flammable refrigerant composition for use in a refrigerant apparatus which comprises a mixture of three different components: (i) a refrigerant selected from chlorodifluoromethane (R22) and pentafluoroethane (R125); (ii) a refrigerant selected from pentafluoroethane (R125) and octafluoropropane (R218); and (iii) a hydrocarbon selected from propylene, and propylene-propane mixtures; in non-flammable proportions.
Claim 2
Dependent Claim
51 words
A non-flammable refrigerant composition for use in a refrigerant apparatus which comprises a mixture of three different components: (i) a refrigerant selected from chlorodifluoromethane (R22) and pentafluoroethane (R125); (ii) a refrigerant selected from pentafluoroethane (R125) and octafluoropropane (R218); and (iii) a hydrocarbon selected from propylene, and propylene-propane mixtures; in non-flammable proportions.
Claim 3
Dependent Claim
40 words
A composition according to claim 1 wherein the three components are present in the following proportions by weight: (i) 50 - 95 wt%; (ii) 3 - 35 wt%; and (iii) 2 - 20 wt% such that the composition is non-flammable.
Claim 4
Dependent Claim
18 words
A composition according to claim 1 which comprises a non-flammable mixture of chlorodifluoromethane (R22), pentafluoroethane (R125) and hydrocarbon.
Claim 5
Dependent Claim
30 words
A composition according to claim 3 which comprises: (i) 65 - 75 wt% of R22; (ii) 15 - 25 wt% of R125; and (iii) 5 - 15 wt% of hydrocarbon.
Claim 6
Dependent Claim
18 words
A composition according to claim 1 which comprises a non-flammable mixture of chlorodifluoromethane (R22), octafluoropropane (R218) and hydrocarbon.
Claim 7
Dependent Claim
30 words
A composition according to claim 5 which comprises: (i) 60 - 90 wt% of R22; (ii) 6 - 30 wt% of R218; and (iii) 5 - 15 wt% of hydrocarbon.
Claim 8
Dependent Claim
19 words
A composition according to claim 1 which comprises a non-flammable mixture of pen- tachloroethane (R125)I, octafluoropropane (R218), and hydrocarbon.
Claim 9
Dependent Claim
30 words
A composition according to claim 7 which comprises: (i) 80 - 90 wt% of R125; (ii) 5 - 15 wt% of R218; and (iii) 3 - 10 wt% of hydrocarbon.
Claim 10
Dependent Claim
12 words
A composition according to any preceding claim wherein the hydrocarbon is propylene.
Claim 11
Dependent Claim
17 words
A vapour compression refrigeration apparatus which employs as refrigerant medium a composition according to any preceding claim.
Claim 12
Independent Claim
20 words
A method of performing vapour compression refrigeration wherein the refrigerant composition of any of claims 1 to 9 is employed.
References Cited (Backward Citations)
No citation records indexed.
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