Patent · US Active

Low-oil refrigerants and vapor compression systems

US10823467B2 · kind B2 · utility

2Cited by

60References

18Claims

0Family size

Assignee

CARRIER CORPORATION · US

Inventors

Ulf J. Jonsson · South Windsor, US
Zissis A. Dardas · Worcester, US
Vishnu M. Sishtla · Manlius, US
Daniel G. Goberman · Town of East Granby, US
Zaffir A. Chaudhry · South Glastonbury, US
Xia Tang · Town of West Hartford, US
Susanne M. Opalka · Glastonbury, US

Key dates

Filing date	Mar 30, 2016
Grant date	Nov 3, 2020
Priority date	—
Expiry date	Mar 30, 2036

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF25B2400/13
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A vapor compression system (20) has: a centrifugal compressor (22) having an inlet (40) and an outlet (42); and an electric motor (28) having a stator (30) and a rotor (32). A plurality of bearings (36) support the rotor. A refrigerant charge comprises a base refrigerant and one or more oils. The one or more oils are present at a total concentration of 80-5000 parts per million (ppm) by weight.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.