John A Judge

US Patent:

20130139529, Jun 6, 2013

Filed:

Jun 7, 2012

Appl. No.:

13/490820

Inventors:

Zongtao Lu - Pittsburgh PA, US
Jianping Li - Shenzhen, CN
Hongyu Zhang - Xi'an, CN
Wanlai Lin - Dublin OH, US
Stephen Sillato - Westerville OH, US
Roger Noll - Gahanna OH, US
John F. Judge - Galena OH, US
Yizhou Fan - Xi'an, CN
Craig Ward - Dublin OH, US

Assignee:

LIEBERT CORPORATION - Columbus OH

International Classification:

F25D 17/06

US Classification:

62 89, 165285, 62186

Abstract:

An air conditioner system including a condenser fan, an ambient temperature sensor, a refrigerant pressure sensor, and a controller. The ambient temperature sensor is to sense ambient temperature at the system. The refrigerant pressure sensor is to sense pressure of a refrigerant of the system. The target refrigerant pressure module is to identify an optimum pressure of the refrigerant in the system. The controller is to generate an output representing a speed of the condenser fan operable to maintain the pressure of the refrigerant at about the optimum pressure as the ambient temperature of the system changes.