Multi-stage refrigeration system including sub-cycle control characteristics
US7631510B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 28, 2005 |
| Grant date | Dec 15, 2009 |
| Priority date | — |
| Expiry date | May 27, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D11/022
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A multi-stage refrigeration system is provided. The refrigeration system includes a first compression element which produces a first compressed refrigerant stream. A mixer combines the first compressed refrigerant stream with an auxiliary refrigerant stream. A second compression element is coupled to the mixer and produces a second compressed refrigerant stream. A first heat exchanger receives the second compressed refrigerant stream and generates a cooled stream. A stream splitter receives the cooled stream and provides first and second output streams. A first expansion valve receives the first output stream and controls the flow of the first output stream and a second expansion valve receives the second output stream and controls the flow of the second output stream. A second heat exchanger generates the auxiliary refrigerant stream provided to the mixer. An evaporator is coupled to the first expansion valve and the first compression element to evaporate the first output stream and provide an evaporated stream to the first compression element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.