Patent ID: 8938180
Filing Date: 2015-01-20
Classification: G03G

Abstract:
1. Ventilating device for ventilating a housing, comprising: a first blower, wherein the first blower is disposed in the housing that is to be ventilated; a second blower; a flow chamber with an inlet opening, an outlet opening, and an equalization opening connecting the flow chamber between the inlet opening and the outlet opening with the environment; a freely movable cover element for partially covering the equalization opening in such a manner that passage of the flow is blocked in one direction but cleared in the other direction; and an ascending pipe, wherein the elements in the ventilating device are arranged in the sequence first blower, inlet opening, flow chamber, outlet opening, second blower, and ascending pipe; the equalization opening is at least partially open at all times, so that the equalization opening displays a greater flow resistance than the inlet opening of the flow chamber; and wherein, the first blower is designed in such a manner that, in normal operating mode, the first blower is not suitable to blow air through the ascending pipe, whereas the second blower is designed therefore.