Refrigerating apparatus
US5934087A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1997 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Sep 2, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2700/21172
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An apparatus for detecting refrigerant leak in a refrigerating apparatus using refrigerant and a heat pump type refrigerating apparatus at low cost is presented. A refrigerant leak is judged from the differential temperature and the running time, by comprising a refrigeration system including a compressor, an evaporator, an expansion device, and a condenser, being sequentially coupled annularly by a conduit, a first temperature detector for detecting the air temperature of suction port of the evaporator, a second temperature detector for detecting the refrigerant temperature at the middle part of the evaporator, a differential temperature detector for calculating the differential temperature of the detectors, and a running time detector for storing the cumulative running time of the compressor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.