System and method for controlling an air conditioner or heat pump
US7784296B2 · kind B2 · utility
16Cited by
23References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2007 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | Dec 3, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A control procedure operates an expansion valve of an air conditioning system. The control procedure utilizes a first control procedure to bring a calculated superheat value within a range of a target superheat value, and a second control procedure to cause the calculated superheat value to match the target superheat value. Both the first and second control procedures preferably use Proportional, Integral, Derivative control algorithms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.