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:
Feb. 09, 2021
Filed:
Mar. 08, 2013
Halla Visteon Climate Control Corporation, Daejeon-si, KR;
Audi Ag, Ingolstadt, DE;
Engelbert Schmitz, Bergheim, DE;
Peter Heyl, Cologne, DE;
Marc Graaf, Krefeld, DE;
Christian Rebinger, Ingolstadt, DE;
Dirk Schroeder, Manching, DE;
Audi AG, Ingolstadt, DE;
Halla Visteon Climate Control Corporation, Daejeon-Si, KR;
Abstract
The invention relates to a device and a method for icing prevention regulation for a heat pump evaporator () in air conditioning systems of vehicles, composed of a subsection () of a refrigerant circuit which can be operated both as a heat pump and also as an air conditioning system. The device comprises the heat pump evaporator (), an electrical or mechanical refrigerant compressor (), a cooler fan () which is attached to the heat pump evaporator () and which draws ambient air () upstream from and through the heat pump evaporator () at an adjustable flow speed, and which thus permits a permanent flow of ambient air () over the heat pump evaporator surface, a first temperature sensor () in or on the refrigerant line () upstream from the heat pump evaporator () with respect to the heat pump operating direction, and a control and regulating unit (). The control and regulating unit () is connected via signal lines () at least to the first temperature sensor (), to further sensors, in particular for detecting the ambient air temperature (Tu) and the vehicle speed (V), to the expansion valve (), to the cooler fan () and to the refrigerant compressor () for the direct or indirect regulation of the flow cross section of the expansion valve () and the rotational speed of the electric refrigerant compressor () or of the regulating valve of the mechanical refrigerant compressor () and for the actuation of the cooler fan () of the vehicle during heat pump operation.