US 11,834,976 B2
Electric gas flow heater and vehicle
Toni Zipfel, Augsburg (DE); and Maximilian Kuhnert, Augsburg (DE)
Assigned to Faurecia Emissions Control Technologies, Germany GmbH
Appl. No. 17/772,678
Filed by Faurecia Emissions Control Technologies, Germany GmbH, Augsburg (DE)
PCT Filed Oct. 19, 2020, PCT No. PCT/EP2020/079375
§ 371(c)(1), (2) Date Apr. 28, 2022,
PCT Pub. No. WO2021/083705, PCT Pub. Date May 6, 2021.
Claims priority of application No. 10 2019 129 322.7 (DE), filed on Oct. 30, 2019.
Prior Publication US 2022/0372904 A1, Nov. 24, 2022
Int. Cl. F01N 3/20 (2006.01); H05B 3/06 (2006.01); H05B 3/10 (2006.01); F01N 3/027 (2006.01); F01N 3/029 (2006.01)
CPC F01N 3/2013 (2013.01) [H05B 3/06 (2013.01); H05B 3/10 (2013.01); F01N 3/027 (2013.01); F01N 3/0275 (2013.01); F01N 3/0296 (2013.01); F01N 3/2026 (2013.01); F01N 2240/04 (2013.01); F01N 2240/16 (2013.01); F01N 2550/22 (2013.01); F01N 2900/04 (2013.01); F01N 2900/0602 (2013.01); H05B 2203/023 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An electric gas flow heater, comprising:
a grid-like heating element through which gas can flow axially and which forms an electrical resistance heating, and wherein the grid-like heating element includes radially successive layers of band-like material, wherein the radially successive layers, in an axial view of the grid-like heating element, are bent in an undulating manner and include valleys and peaks, wherein the radially successive layers that are located between a radially outermost layer and a radially innermost layer are attached by the peaks and the valleys to radially adjacent layers, so that flow-through openings are formed between the radially successive layers, and wherein wavelengths of the radially successive layers increase radially outwards.