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:
Nov. 30, 1999
Filed:
Aug. 24, 1998
Wilhelm Baruschke, Wangen, DE;
Matthias Kies, Steinheim, DE;
Karl Lochmahr, Vaihingen/Enz-Horrheim, DE;
Joachim Raimann, Stuttgart, DE;
Behr GmbH & Co., Stuttgart, DE;
Abstract
A process and an arrangement for controlling an air conditioner utilize an evaporator protected against icing and a refrigerant circulating system which includes at least one compressor and the evaporator. The evaporator temperature is sensed continuously and the compressor is deactivated when the evaporator temperature falls below a defined switch-off temperature. The compressor is activated again when the evaporator temperature exceeds a defined switch-on temperature which is at least equal to the switch-off temperature. The evaporator temperature gradient is determined by a corresponding control unit from the continuous sensing of the evaporator temperature. The switch-off temperature is variably defined as a function of the determined temperature gradient and is selected so as to rise with a negative evaporator temperature gradient, having an amount which increases, during operating phases with an activated compressor and/or with a falling positive evaporator temperature gradient during operating phases with a deactivated compressor.