Refrigerant pump down for an HVAC system
US10767882B2 · kind B2 · utility
11Cited by
2References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2018 |
| Grant date | Sep 8, 2020 |
| Priority date | — |
| Expiry date | Jan 12, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2600/2503
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
In one embodiment, an HVAC system includes an indoor unit having an indoor blower, an outdoor unit having a compressor and a condenser, an isolation valve coupled to the outdoor unit, and a sensor to detect a refrigerant leak. The HVAC system further includes one or more controllers operable to generate an alarm in response to the sensor detecting the refrigerant leak, operate the indoor blower in response to generating the alarm, close the isolation valve in response to generating the alarm, and operate the compressor to pump down the refrigerant to the condenser in response to generating the alarm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.