Method of introducing leak detection dye into an air conditioning or refrigeration system
US5440919A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 1994 |
| Grant date | Aug 15, 1995 |
| Priority date | — |
| Expiry date | Aug 29, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2500/222
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of introducing a leak detection additive into a closed refrigeration system by a substrate containing the additive. A predetermined amount of the additive is implanted on and absorbed into a host swatch of substrate material which is capable of absorbing and releasing the leak detection additive, but which does not react with refrigerant or system lubricant. The swatch is installed in a desiccant bag, which is then installed in a dehydrator of the refrigeration system. The refrigeration system is assembled, charged and operated, by which the refrigerant and system lubricant flowing through the desiccant bag mixes the additive with the refrigerant and system lubricant. In alternative embodiments, the substrate is constructed to be used as a filter in various components of the refrigeration system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.