Patent ID: 11920824
Assignee: MAHLE INTERNATIONAL GMBH
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  H  Y | IPC F

Claim 10:
11. 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 is formed by a cured sealant, a separate sealing plate and a separate plate seal,
wherein the housing comprises a filling opening, through which the liquid sealant is flowed into the compensating chamber,
wherein the liquid sealant completely fills up the compensating chamber, so that on the one hand it is touchingly arranged on the sealing plate arranged within the compensating chamber and on the other hand on the housing cover and on the housing,
wherein the liquid sealant is volume-expandingly cured, so that the cured sealant spreads apart the sealing plate and the housing cover in the direction of the longitudinal axis and seals the compensating chamber and the filling opening, and
wherein on the sealing plate the plate seal is arranged, which, subjected to force by the cured sealant, touchingly lies against the plate stack and seals the plate stack against the compensating chamber.