Refrigeration system
US6237358A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2000 |
| Grant date | May 29, 2001 |
| Priority date | — |
| Expiry date | Aug 23, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2400/22
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A first refrigeration circuit (1) for a refrigerating apparatus (6) which is formed into a two-stage cascade refrigerating cycle by establishing connection between a high temperature-side refrigerant circuit (3) and a low temperature-side refrigerant circuit (4) through a first refrigerant heat exchanger (5A), a second refrigeration circuit (2) which is formed into a refrigerating cycle different from that of the first refrigeration circuit (1), and a second refrigerant heat exchanger (5B) connected to the low temperature-side refrigerant circuit (4) are provided. The second refrigerant heat exchanger (5B) is connected, through connection piping lines (41, 42), to a liquid piping line (36a) and a suction-side gas piping line (36b) of the second refrigeration circuit (2). First switching means (43, 44) are disposed for selective circulation of a refrigerant of the second refrigeration circuit (2) to the second refrigerant heat exchanger (5B) through the connection piping lines (41, 42), whereby, even when a heat source equipment (11) stops operating in a two-stage cascade refrigerating-cycle refrigeration system applied to a showcase or the like, it becomes possible to achieve conti…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.