US 11,920,824 B2
Humidifying device for transferring water from waste air of a waste air flow to supply air of a supply air flow
Swen-Juri Bauer, Stuttgart (DE); Andreas Gruener, Hattenhofen (DE); Stefan Kaiser, Remseck (DE); Aleksandar Radlovic, Stuttgart (DE); Lukas Schikora, Esslingen (DE); and Alexander Tuntukas, Stuttgart (DE)
Assigned to Mahle International GmbH, Stuttgart (DE)
Filed by MAHLE International GmbH, Stuttgart (DE)
Filed on Jun. 8, 2021, as Appl. No. 17/342,478.
Claims priority of application No. 10 2020 207 147.0 (DE), filed on Jun. 8, 2020.
Prior Publication US 2021/0381704 A1, Dec. 9, 2021
Int. Cl. F24F 6/00 (2006.01); F24F 11/00 (2018.01); F24F 12/00 (2006.01); F24F 7/00 (2021.01); F24F 110/22 (2018.01)
CPC F24F 6/00 (2013.01) [F24F 11/0008 (2013.01); F24F 12/002 (2013.01); F24F 2006/006 (2013.01); F24F 2007/001 (2013.01); F24F 2110/22 (2018.01)] 11 Claims
OG exemplary drawing
 
1. A humidifying device for transferring water, contained in waste air of a waste air flow, from the waste air to supply air of a supply air flow for a fuel cell, the humidifying device comprising:
a plate stack having a longitudinal extent along a longitudinal axis, the plate stack comprising separate individual plates that are touchingly stacked onto one another in the direction of the longitudinal axis, wherein each of the separate individual plates, for transferring the water from the waste air of the waste air flow enriched with the water to the supply air of the supply air flow to be enriched with the water, comprises a fluid-permeable membrane;
a housing, which forms at least one housing opening wherein the plate stack is completely inserted into the housing through a housing opening of the housing;
at least one housing cover, which completely seals the one housing opening, wherein in the direction of the longitudinal axis, a compensating chamber is defined between the housing cover and the plate stack; and
a spreader arranged in the compensating chamber and configured to spread apart the plate stack and the housing cover in the direction of the longitudinal axis,
wherein the spreader comprises a separate compression spring, a separate sealing plate, and a separate plate seal,
wherein the separate compression spring touchingly supports itself on the housing cover,
wherein the compression spring extends in the direction of the longitudinal axis through the compensating chamber and touchingly supports itself on the sealing plate,
wherein, within the compensating chamber, the sealing plate is movably mounted on the housing from the inside of the housing in the direction of the longitudinal axis,
wherein, on a large side facing away from the compression spring, the sealing plate carries the plate seal,
wherein the plate seal, subjected to force by the compression spring, touchingly lies against the plate stack and seals the plate stack against the compensating chamber,
wherein the sealing plate is formed by a pot body, which has a round or square pot base, which is framed by a pot wall surrounding the pot base completely or at least in section, which pot wall projects away from the pot base at a right angle, and
wherein the plate seal is realized through a flat round or square elastic gasket that is formed in one piece and congruently with the pot base in terms of area.