Method and apparatus for predictive maintenance of HVACR systems
US5596507A · kind A · utility
Inventors
Key dates
| Filing date | Aug 15, 1994 |
| Grant date | Jan 21, 1997 |
| Priority date | — |
| Expiry date | Aug 15, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/43008
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Predictive maintenance method and apparatus for use with heating, ventilation, air-conditioning and/or refrigeration (HVACR) systems are disclosed. The preferred apparatus includes a dozen temperature sensors strategically located within and HVACR system to sense various operating temperatures and three electrical current sensors to sense various operating electrical currents. HVACR system conditions are measured periodically by an on-site service technician and inputted to a computer that identifies and reports the potential trouble spots represented by out-of-range measurements. The computer is programmed to produce graphs, tables and prediction commentary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.