US 12,334,234 B2
Air cooled resistor
Tove Audhav, Landvetter (SE); Fredrik Rahm, Hörby (SE); Magnus Ising, Lund (SE); and Arne Andersson, Mölnlycke (SE)
Assigned to Volvo Truck Corporation, Gøteborg (SE)
Filed by Volvo Truck Corporation, Gothenburg (SE)
Filed on Oct. 20, 2022, as Appl. No. 17/969,910.
Claims priority of application No. 21208830 (EP), filed on Nov. 17, 2021.
Prior Publication US 2023/0154655 A1, May 18, 2023
Int. Cl. H01C 1/082 (2006.01)
CPC H01C 1/082 (2013.01) 15 Claims
OG exemplary drawing
 
1. An air cooled resistor arrangement, comprising:
a first elongated tube member comprising a first open inlet portion and a first open outlet portion, the first elongated tube member extending from the first open inlet portion to the first open outlet portion,
a second elongated tube member comprising a second open inlet portion and a second open outlet portion, the second elongated tube member extending from the second open inlet portion to the second open outlet portion, and
an electrically conductive resistor element comprising an electric resistive material, the resistor element being connectable to a source of electric power, wherein the resistor element is arranged on a surface of the first elongated tube member,
wherein the first elongated tube member is housed inside the second elongated tube member, the first elongated tube member and the second elongated tube member being spaced apart from each other continuously along the extension of the first elongated tube member by an air gap perpendicular to the extension of the first elongated tube member such that a flow of air entering the air cooled resistor arrangement is directed through the first elongated tube member and through the air gap, and heated by the resistor element before being exhausted through the first and the second open outlet portions.