US 6,581,404 B2 · Refrigerant

Abstract

An object of the present invention is to provide a refrigerant in which an odorant is added, the odorant being compatible with refrigerants and refrigerating device oils, and having no reactivity with refrigerating device oils and materials forming refrigerating circuits, and to provide a refrigerating device in which the refrigerant is circulated in the refrigerating circuit. A refrigerant whose main component is a hydrocarbon having 1 to 4 carbon atoms, or a flammable hydrocarbon fluoride obtained when one or more hydrogen atoms of the hydrocarbon is substituted by fluorine atoms, the refrigerant containing a tetrahydrothiophene as an odorant, and a refrigerating device in which the refrigerant is circulated are provided.

Claims2

Dependent claims

A refrigerant comprising:

(i) a hydrocarbon having 1 to 4 carbon atoms, or a flammable hydrocarbon fluoride having a structure derived by fluorine atoms for one or more hydrogen atoms of said hydrocarbon, as a main component, and
(ii) a tetrahydrothiophene as an odorant,
wherein purity of the hydrocarbon or the flammable hydrocarbon fluoride is at least 99.0 vol %, the content of unsaturated hydrocarbon is no more than 0.01 wt %, and the entire sulfur content is no more than 0.1 wt ppm.

Dependencies are inferred from the claim text.

Facts

Application

10/217,870Filed 13 Aug 2002 · division

Priority

JP 2000-22767827 Jul 2000

Published

US 2002/0035848 A126 Dec 2002

Granted

24 Jun 2003

Term ends

Not estimatedThe source records don’t support an estimate.

Classification3 codes

C09K 5/045
Comprising halogenated compounds: containing only fluorine as halogen
C09K 5/042
For compression-type refrigeration systems: comprising compounds containing carbon and hydrogen only
C09K
Materials for miscellaneous applications, not provided for elsewhere

Refrigerant

Life of this patent

Refrigerant

Life of this patent

Abstract

Claims2