US 6,506,110 B1Granted

Ventilation device, especially for electrical control devices

AssigneeSiemens Aktiengesellschaft

InventorWolfgang Borisch

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Abstract

A ventilation device for electrical control devices is provided in a housing wall of a housing. The ventilation device includes a wall with an inner opening that is open with respect to the space inside the housing and is intended for receiving and delivering a gas from and to the space inside the housing. The wall of the device also includes an outer duct opening that is open with respect to the housing surroundings and is intended for receiving and delivering a gas from and to the housing surroundings. The inner opening and the outer duct opening are connected to each other for leading the gas between the openings through a ventilation duct unit in which a membrane unit is disposed. The inner opening and the outer duct opening are offset laterally with respect to each other such that they do not overlap each other.

Claims9

Dependent claims

A ventilation device, comprising:

a wall defining an inner space and surroundings and having:
at least one inner opening open to said inner space for receiving and delivering gas from and to said inner space;
at least one outer opening open to the surroundings for receiving and delivering gas from and to the surroundings, said at least one inner opening and said at least one outer opening laterally offset to not overlap;
a depression disposed in said wall surrounding said at least one inner opening;
and
at least one ventilation duct formed as a recess in said wall and having a distal end, fluidically connected to said depression, and extending away from said depression, for leading the gas between said at least one inner opening and said at least one outer openting;
a membrane unit disposed in said depression;
and
a covering layer attached to said wall and juxtapositioned inside of the distal end of said at least one ventilation duct to form said at least one outer opening.

6 more elements

Dependencies are inferred from the claim text.