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:
Dec. 22, 2015
Filed:
Nov. 15, 2011
Robert D. Turney, Watertown, WI (US);
Justin P. Kauffman, Mount Wolf, PA (US);
Kirk H. Drees, Cedarburg, WI (US);
Homero Noboa, Waukesha, WI (US);
Brett M. Lenhardt, Waukesha, WI (US);
Robert D. Turney, Watertown, WI (US);
Justin P. Kauffman, Mount Wolf, PA (US);
Kirk H. Drees, Cedarburg, WI (US);
Homero Noboa, Waukesha, WI (US);
Brett M. Lenhardt, Waukesha, WI (US);
Johnson Controls Technology Company, Holland, MI (US);
Abstract
A refrigeration system includes a compressor, a condenser, an expansion device, an evaporator, and an additional refrigerant vessel connected in a closed refrigerant loop. The additional refrigerant vessel is connected to the condenser at the high pressure side by a first valve and to the evaporator at a low pressure side by a second valve. A controller controls operation of the first valve and the second valve. Only one of the first valve and the second valve may be open at the same time. Refrigerant from the additional refrigerant vessel may be added to the closed refrigerant loop when the controller receives a low refrigerant level indication of in the evaporator. Refrigerant may also be removed from the closed refrigerant loop when the controller receives a high refrigerant level indication in the evaporator.