DE7425550U - Ventilation door with automatically closing ventilation channels - Google Patents

Description

Ernst Hoffmann
714 Ludwigsburg
Hirsauer Str. 24

Ventilation door with automatically closing ventilation channels

description

The ventilation door with automatically closing ventilation routes for trac. ^ transformer stations essentially consists of from a commercially available metal profile frame (1) with an outer one that is firmly attached to the door frame and an inner (Raumaeite), movably attached Ventilation wall.

The first-mentioned ventilation wall (2) consists of individual, U-shaped folded slats, which, with the U-back forming the outside of the door, horizontally and to each other are arranged at a distance (outer ventilation flashes). The inner, movably attached ventilation wall (3) also consists of individual, horizontal and zueinas4 & r - i & Jtbsiaed- (4aa & £ e-LU & slze-) - Vertical profile rails (4) attached slats of the same profile as that of the slats on the outside of the door. The U-backs of these slats form the inside of the door. The lamellas on the inside of the thru are by means of continuous side panels (5) tightly closed.

The slats of the movable inside of the ear are the fixed ones Slats on the outside of the door opposite in height attached so offset that the free legs each engage in two opposite U-profiles. in the

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the open state of the ventilation ducts is the distance the leg ends to the opposite lamella insides at least the size of the bellows width of a Ventilation flash of the outer or inner ventilation wall.

The movable suspension of the inner ventilation wall takes place via the two mentioned profile rails, namely at their upper and lower ends. A bolt (6) is fastened here, which can slide from the rest position (ventilation open) into the working position (ventilation closed) within a groove that rises by about 15 ° towards the outside of the door, while at the same time the entire inner ventilation wall is raised by a few millimeters . The butes in which the bolts slide are milled into simple angle pieces (1) which are screwed to the profile door frame.

If a boob voltage side occurs in the transformer station Arcing faults occur, the pressure wave emanating from the Liobt arc creates the movable ventilation wall Moved in the direction of fixed delivery. the Movement is ended as soon as the leg ends of the slats meet the inside of the opposite slats. The door's ventilation ducts are now closed; the escape of hot gases interspersed with glowing particles, caused by the arc is largely prevented. After the arc has been extinguished and the pressure has dropped the inner ventilation wall slides due to its own weight, back to rest position. The door's ventilation routes are open.

If you want the ventilation ducts to remain closed, this can be achieved by

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that the guide grooves before the last third of their rise fall off, so are formed in segments and thereby the Gleltbolzen in their working position be held.

The suspension of the movable wall shown here in guide grooves should be the most cost-saving solution several available design options. That the ventilation door has a 3-point base should have, welohe si9 against jumping open when entering the Liohtbogen-Druokwelle protects, be here only for completeness mentioned for the sake of it. It should also be mentioned that the ventilation door described here is absolutely stoobersioher and, due to a deflection of the exchange air by 360 °, it is to a considerable extent safe to fly.

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Claims (1)

Ernst Hoffmann
714 Ludwigsburg
Hirsauer Str. 24 Ventilation door with automatically closing ventilation channels Sobutzanspruob A ventilation door with automatically closing lift paths, gekennzeiobnet durob two ventilation walls, of one of which is movably connected to the door frame as a structural unit and its mode of operation a gas pressure wave is triggered.