Refrigerant compressor protecting device
US4328678A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1980 |
| Grant date | May 11, 1982 |
| Priority date | — |
| Expiry date | Apr 18, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B49/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A protecting device for protecting a refrigerant compressor from overheating or seizure caused by a shortage of refrigerant by any chance such as leakage thereof. The device includes a temperature sensor disposed on the outer wall of the compressor casing in the vicinity of a refrigerant intake suction suction port for sensing the temperature of the outer wall to output the sensed or measured data and a discriminator for discriminating an occurrence of refrigerant shortage by an excess of the data over a predetermined condition for comparison. The signals from the discriminator cause a warning issuance of the refrigerant shortage or an automatic stoppage of the compressor operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.