Mixture of three refrigerants

Claim 2

A refrigerant mixture consisting of Dichlorodifluoromethane (R12), Chlorodifluoromethane (R22) and Chlorodifluoroethane (R142b) in which said R142b is not in excess of 60% by weight of said mixture and said R12 and R22 are in ratios of about three parts to five parts respectively by weight of the 40% or more of the remaining weight of said mixture, the total of the three components being 100%.

Claim 3

The refrigerant mixture of claim 1, wherein the ratios of R12 and R22 may have a variance up to 10%.

Claim 4

The refrigerant mixture of claim 1, wherein said mixture is compatible with mixtures with oil.

Claim 5

The refrigerant mixture of claim 1, wherein the proportion by weight of R142b makes the mixture nonflammable.

Claim 6

The refrigerant mixture of claim 1, wherein at a temperature of 0° F., the heat of vaporization of said refrigerant mixture is equal approximately to 92.898 BTU per pound of refrigerant.

Claim 7

The refrigerant mixture of claim 1 wherein the substantially constant boiling point of said refrigerant mixture characterizes said mixture as an azeotrope.

Claim 8

The refrigerant mixture of claim 1, wherein said mixture boils at essentially a constant temperature and functions as a single substance.

Claim 9

The refrigerant mixture of claim 1, wherein said mixture has a substantially constant boiling point of approximately -15.9° F. at one atmosphere.

Claim 10

The refrigerant mixture of claim 1, wherein the condensing pressure of said mixture at 130° F. is on the order of 215 psig.

Claim 11

A refrigerant mixture consisting of Dichlorodifluoromethane (R12), Chlorodifluoromethane (R22) and Chlorodifluoroethane (R142b) in which the weight percent of said R142b is about 60% and the weight percent of said R12 is about 15% and the weight percent of R22 is about 25% of the total weight of the mixture.

Claim 12

A refrigerant mixture consisting of Dichlorodifluoromethane (R12), Chlorodifluoromethane (R22) and Chlorodifluoroethane (R142b) in which the weight percent of said R142b is about 60% and the weight percent of said R12 is about 15% and the weight percent of R22 is about 25% of the total weight of the mixture.

Claim 13

The process of producing refrigeration which comprises evaporating in the vicinity of a body to be cooled, a mixture consisting of about 60% by weight of Chlorodifluoroethane (R142b), about 15% by weight of Dichlorodifluoromethane (R12) and about 25% by weight of Chlorodifluoromethane (R22) in which the mixture boils at essentially a constant temperature, functions as a single substance and subsequently evaporates in the vicinity of the body to be cooled.

Claim 14

The process of producing refrigeration which comprises evaporating in the vicinity of a body to be cooled, a mixture consisting of about 60% by weight of Chlorodifluoroethane (R142b), about 15% by weight of Dichlorodifluoromethane (R12) and about 25% by weight of Chlorodifluoromethane (R22) in which the mixture boils at essentially a constant temperature, functions as a single substance and subsequently evaporates in the vicinity of the body to be cooled.