Switchgear cabinet including a smoke indicator means
AssigneeRittal GmbH & Co. KG
InventorsMichael Seelbach, Heinrich Strackbein, Markus Hain, Edgar Nickel
Life of this patent
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Abstract
A switchgear cabinet including a smoke indicator which has an intake pipe and, in a housing, a smoke sensor as well as a fan or ventilator, which draws air from the interior of the switchgear cabinet into the housing via an inlet aperture in a housing wall and discharges the air via an outlet into the space outside the housing. A sensitive smoke indicator, which is also usable with the switchgear cabinet partially open, has the intake pipe communicating by its upper end region with the inlet aperture. The housing which is enclosed in a sealing manner apart from the intake pipe and the outlet, is disposed in the interior of the switchgear cabinet.
Claims18
In a switchgear cabinet (10) including a smoke indicator (1) having an intake pipe (3) and in a housing (2) a smoke sensor (4) and a fan or ventilator (5), which is disposed downstream of the smoke sensor in a flow path and draws air from an interior of the switchgear cabinet (10) into the housing (2) via an inlet aperture in a lower housing wall (2.12) and discharges the air via an outlet into the space outside the housing (2), the improvement comprising:
- the intake pipe (3) communicating by an upper end region with the inlet aperture, and the housing (2) enclosed in a sealing manner apart from the inlet aperture and the outlet disposed in the interior of the switchgear cabinet (10);
- the housing (2) disposed in an upper region of the interior of the switchgear cabinet (10) at a spacing from a switchgear cabinet covering wall (10.3);
- the intake pipe (3) connected with the lower housing wall (2.12) and extending therefrom, the intake pipe (3) having air inlet apertures (3.1) over a length of the intake pipe (3).
Dependencies are inferred from the claim text.