Refrigerating and air-conditioning apparatus and method of determining refrigerant composition of refrigerating and air-conditioning apparatus
US6247320A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1999 |
| Grant date | Jun 19, 2001 |
| Priority date | — |
| Expiry date | Jul 8, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2205/34
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In the detection of circulating compositions in the cycle of a non-azeotropic refrigerant composed of three or more kinds of refrigerants, there have been drawbacks in that the number of sensors required is large, and large errors are contained in the circulating composition which can be detected. To overcome these drawbacks, the refrigerating and air-conditioning apparatus comprises at least a compressor, a condenser, a pressure reducing device, and an evaporator, and in a refrigerant cycle which uses as a working refrigerant a non-azeotropic refrigerant composed of N kinds (N.gtoreq.3) of refrigerants and is provided with composition detecting means for detecting the circulating compositions of the non-azeotropic refrigerant, circulating compositions are determined by using (N-2) relations on compositions among a first component to a j-th (2.ltoreq.j.ltoreq.N-1) component of the non-azeotropic refrigerant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.