Refrigeration system oil measurement and sampling device
US4866994A · kind A · utility
5Cited by
12References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 18, 1988 |
| Grant date | Sep 19, 1989 |
| Priority date | — |
| Expiry date | Jul 18, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/4033
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sample cell connected through valving to a refrigeration system allows a prescribed mass of refrigerant with entrained oil to be collected and the refrigerant to be vaporized and returned to the system while leaving the oil in a graduated measuring tube. The sample cell has transparent upper and lower portions with graduated bores for measurement of the original sample and the oil residue, and an aluminum middle portion also containing a bore for conducting heat from the ambient air to the refrigerant to assist in the vaporization as well as for normalizing the temperature of the sample during filling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.