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

Claim 9:
10. 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 elastic hose seal, a separate sealing plate and a separate plate seal,
wherein the hose seal touchingly supports itself on the housing cover and on the housing and transversely with respect to the longitudinal axis completely surrounds the longitudinal axis,
wherein the hose seal expands 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 in the direction of the longitudinal axis and on a large side facing away with respect to the hose seal carries the plate seal, and
wherein the plate seal, subjected to force by the hose seal, touchingly lies against the plate stack and seals the plate stack against the compensating chamber.