| US 7,500,368 B2 | ||
| System and method for verifying proper refrigerant and airflow for air conditioners and heat pumps in cooling mode | ||
| Robert James Mowris, P.O. Box 2141, Olympic Valley, Calif. 96146 (US) | ||
| Filed on Jun. 14, 2005, as Appl. No. 11/152,302. | ||
| Claims priority of provisional application 60/611054, filed on Sep. 17, 2004. | ||
| Prior Publication US 2006/0117767 A1, Jun. 08, 2006 | ||
| Int. Cl. F25B 45/00 (2006.01) | ||
| U.S. Cl. 62—149 [62/292; 62/324.4] | 25 Claims |
| 1. A method for adjusting a refrigerant charge of an air conditioning system, the method comprising:
computing a delta temperature split;
comparing the delta temperature split to a delta temperature split threshold;
if the absolute value of the delta temperature split is less than the delta temperature split threshold, ending the method;
if the delta temperature split is less than minus the delta temperature split threshold, and the air conditioning system is
not a Thermostatic Expansion Valve (TXV) system:
computing one of the a refrigerant undercharge and a refrigerant overcharge based on a superheat temperature;
if the delta temperature split is less than minus the delta temperature split threshold, and the air conditioning system is
the TXV system:
computing one of the refrigerant undercharge and the refrigerant overcharge based on subcooling temperature; and
adjusting the amount of refrigerant in the air conditioning system based on one of the refrigerant undercharge and the refrigerant
overcharge.
|