Charge loss detection and prognostics for multi-modular split systems
US7159408B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2004 |
| Grant date | Jan 9, 2007 |
| Priority date | — |
| Expiry date | Jan 6, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2700/04
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A method for detecting and predicting refrigerant level includes the steps of determining an estimated value for a parameter indicative of refrigerant level and comparing that estimated value to an actual value. The difference between the actual and estimated value provides a refrigerant charge indicator value. The charge indicator value is indicative of the amount of refrigerant contained within the system. A change value is combined with the charge indicator value to provide a prediction for the future value of the charge indicator value. This future value is determined based on a rate of change and charge indicator value over a selected period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.