DE1454651A1 - Gas flow control louvre - Google Patents

Description

The invention relates to such gas flow control louvres which have a plurality of pivotable blades that into an opening position under the pressure of the gas flowing through pivot and return to a closed position when the gas pressure falls below a predetermined minimum level sinks. Such blinds are hereinafter referred to as "gas.; Current control blinds of the type described".

Considerable difficulties arise with such tax blinds if it is to be ensured that the blind closes tightly when the gas pressure falls below this minimum value has fallen. It is of particular importance to ensure that such a tight seal is established around you Possibly occurring Rüclcotrora of poisonous or impure Prevent gases through the blind.

909811/0207

BATH

- 2 - June 27, 1963

An object of the present invention is to provide a new and improved gas flow control louvre of that described To create a manner in which the above-mentioned difficulties are substantially overcome.

The gas flow control louvre of the type described draws according to the present invention in that each wing is pivotable about an axis. Which is parallel to The longitudinal axis of the wing extends and is offset from the position assumed by the wings in the closed state is arranged, and that the edges of each wing are each assigned seat surfaces against which they are in closed Close fitting condition.

In such a control blind according to the invention, the wings are normally with a certain bias in Closed position out. This bias can be done directly by gravity or by any other mechanical means such as resilient guidance. Regardless of the type of preload used the eccentric pivoting arrangement of the wings ensures that the preload creates a noticeable force is exerted on the wing in the closing direction.

The invention will now be described by way of example and with reference to the drawings, in which:

909811/0 2 07

BAD Ci $ @

- 3 - June 27, 1965

1 is a view of a longitudinal section of a vertical arranged control shutter according to the represents the present invention;

Fig. 2 shows a cross section of a first Ausinrungsfom a horizontally arranged control louvre according to the invention , and

3 shows a cross section of a second embodiment represents a horizontally arranged control shutter geaafi of the invention.

Flg. 1 of the drawings shows a wall 1 in which a ventilation opening 2 is designed, which can be closed by means of a control shutter 3. The control blind points a plurality of elongated "rectangular wings 4". Each wing 4 is on a pair laterally at a distance from one another arranged swivel arms 5 (only one of the two is shown) attached. One end of each lever 5 is bolted to a wing 4 while the other end is attached to one of them genelnsaaen control rod 6 is pivotally attached. One piece With each Απα 5 and branching from this, a branch axis 7 is formed, the end of which is pivotable on a web δ of an elongated angle iron 9 is attached. Each corner element 9 is at its end on a frame 1o of the opening 2 attached. The top angle iron 9 is also on one Mounted carrier 11, from the upper edge of the Hansen 1o

909811/0207

- 4 - June 27, 1965

the opening 2 is hanging down. In this way, each wing pivots about an axis 7a which is parallel to the longitudinal axis of the However, the wing extends at a distance from the position that the wing assumes in the closed state.

The edges of each wing 4 are covered with a suitable sealing strip 12 provided, which against the from the vertical leg of the angle iron 9 and the free leg of the frame 1o formed seat is applied.

A stop member I5 is below the common control rod 6 and arranged in their path. This stop member is attached to a rotary lever 14 whose movement of a motor 15 is controlled.

In operation, the task of the control louvre is to allow the gas (normally air) to flow through the opening 2 in the direction of the arrow 16, while it prevents the gas from flowing back in the opposite direction. When the air flow in the direction of arrow 16 exceeds a certain size, the blades 4 endeavor to pivot into an open position designated ^{in the drawings by 4 1.} Any movement of the wings is of course accompanied by a movement of the control rod 6, and downward movement of the control rod is limited by the position of the stop member 13. The position of the stop member I3 is as

90981 1/0207

- 5 - 27 June 1963

it is shown in the drawings in such a way that any opening of the wings 4 is prevented. The position of the stop member I5 is made automatically by the motor 15 changed, as a result of information fed into the engine, which the requirements of the gas flow in the direction of arrow 16 concern at any time, Therefore, if the condition to the left of the blind requires a greater flow of gas to the blind, then it lowers Motor 15 automatically the stop member 1j5, so that the blind can open to a greater extent. If vice versa reduced or no gas supply is required, the stop member is raised, which the blind of the Towards closed position. In this way, the motor 15 and its associated stop member 15 effective to automatically to regulate the opening dimension of the blind. If on the other hand while the blind is open at some point the gas flow through the blind suddenly falls below you If a certain minimum value falls, the leaves automatically fall back into their closed position. In addition, as a result the fact that the wings are mounted eccentrically, the wings with their sealing strips firmly against those by the vertical ones Legs of the angle iron 9 and the free legs of the frame 1o formed seat surfaces pressed. To this This ensures that any possibility of gas flow from left to right is essentially prevented will.

9 0 9 811/0207 Bad u

ι t J η υ υ · ι - 6 - June 27, 1965

In the arrangement shown in Figure 2 of the drawings, the blind is of essentially the same construction has, like the blind shown in Fig. 1, mounted horizontally. In this case too, the force of gravity causes the wings to move into a closed position out, with the opening dimension of the wing in turn a stop member controlled by a motor is controlled. As with the arrangement shown in FIG the eccentric fastening of each wing ensures that it rests tightly against its seat when closed.

In contrast, in the arrangement shown in FIG Wings usually tend to open up under its gravity. In order to overcome this effort, the control rod is wind, biased by a tension spring 21 against movement to the right, the action of the tension spring on the wings is transferred and these, as shown in the drawings, are forced into a closed position. This biasing effect the spring is overcome by a gas flow in the direction of the arrow. As with the previous embodiments in turn, due to the eccentric fastening of the wings, these firmly against their seat under the action of the spring force pressed.

909811/0207

Claims (1)

- 7 - June 27, 1965 Patent claim Uc h e 1. J gas flow control shutter with a plurality of pivoting Control wings that are under the pressure of the swivel the gas flowing through to an open position and the return to a closed position, when the gas pressure falls below a predetermined minimum value, characterized in that each vane is pivotable about an axis which runs parallel to the longitudinal axis of the wings and opposite that of the Wings in the closed position is arranged offset, and that the edges of each Wing are each assigned seat surfaces against which they lie tightly in the closed state. 2. Gas flow control louvre according to claim 1, characterized in that that the wings are hinged to a common control rod, their movement in the direction is limited to an opening of the wing by means of an adjustable stop. 5. Gas flow control louvre according to claim 2, characterized in that that the adjustment of the stop is effected by "a motor. 909811/0207 - June 8-27, 1963 4. Gas flow control louvre according to one of the preceding Claims, characterized in that each of the seat surfaces is formed by a rod which is fixed to the frame the openings in which the blind is mounted. 909811/0207