The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 2018
Filed:
Apr. 22, 2015
Liebert Corporation, Columbus, OH (US);
John F. Judge, Galena, OH (US);
Timothy J. Schrader, Irwin, OH (US);
Stephen Sillato, Westerville, OH (US);
Roger Noll, Gahanna, OH (US);
Gary A. Helmink, Galloway, OH (US);
Pierpaolo Barbato, Noventa Padovana, IT;
Giuseppe Dalla Mana, Vigonza, IT;
Lou Monnier, Clarksville, TN (US);
Zhiyong Lin, Dublin, OH (US);
Benedict J. Dolcich, Westerville, OH (US);
Daniel J. Schutte, Lewis Center, OH (US);
Greg Haggy, Gahanna, OH (US);
Liebert Corporation, Columbus, OH (US);
Abstract
A cooling system has a cabinet and a plurality of separate cooling stages including an upstream cooling stage and a downstream cooling stage. At least the upstream cooling state is a variable capacity cooling stage. Each cooling stage has a cooling circuit. Evaporators of the cooling circuits are arranged in the cabinet so that air passes over them in serial fashion. A controller when a Call for Cooling first reaches a point where cooling is needed, operating the upstream cooling circuit to provide cooling and not the downstream cooling circuit. When the Call for Cooling has increased to a second point, the controller additionally operates the downstream cooling circuit to provide cooling. The cooling capacity at which the upstream cooling circuit is being operated is less than its full capacity when the Call for Cooling reaches the second point.