Multi-stage compression refrigerating device
US6581408B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2002 |
| Grant date | Jun 24, 2003 |
| Priority date | — |
| Expiry date | Jan 10, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2400/13
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Refrigerant exiting a condenser (1) is diverted into first and second parts, with the first part passed to a first intercooler (6) via a first decompression means (3) while the second part is passed to an evaporator (8) via a second decompression means (7). The refrigerant passed to the second decompression means (7) undergoes heat exchange with the intercooler (6). The refrigerant discharged from the evaporator (8) is fed to a first stage low-pressure compression means (32). In the multi-stage compression apparatus, the refrigerant discharged-from the low-pressure compression means (32) is mixed or merged with the refrigerant exiting the intercooler (6) at a merging point (106), and then fed to a second stage high-pressure compression means (34). The displacement volume of the low-pressure compression means (32) is larger than that of the high-pressure compression means(34). Provided between the first intercooler (6) and the merging point (106) is a one-way valve (9) for permitting the flow only in the direction from the first intercooler (6) to the merging point (106). The inventive multi-stage compression refrigeration apparatus may perform refrigeration with suppressed temperat…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.