System and method for verifying proper refrigerant and airflow for air conditioners and heat pumps in cooling mode
US7500368B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jun 14, 2005 |
| Grant date | Mar 10, 2009 |
| Priority date | — |
| Expiry date | Oct 22, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2500/19
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An apparatus for the diagnosis of a cooling system which receives inputs in the form of data about a cooling system, and measurements made from the cooling system, and which then calculates the amount of refrigerant to be removed or added to the cooling system for optimal performance. In addition, methods for ensuring correct setup of a cooling system are disclosed. The methods may apply to FXV (fixed expansion valve) systems and may include making and displaying a prediction of a refrigerant adjustment based upon measurements such as return air wetbulb temperature, condenser air entering temperature, refrigerant superheat vapor line temperature, and refrigerant superheat vapor line pressure. A method for ensuring correct setup of a cooling system is disclosed. The method may apply to TXV (thermostatic expansion valve) systems and may include making and displaying a prediction of a refrigerant adjustment based upon measurements such as refrigerant subcooling liquid line temperature and refrigerant subcooling liquid line pressure. A method for ensuring correct setup of a cooling system is disclosed. The method may include making and displaying a prediction of a refrigerant adjustmen…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.