DE2155683A1 - Device for the supply and distribution of large amounts of fresh air - Google Patents

Description

DR, ING. E. HOFFMANN · DIPL ·. ING. W. EHXE DR. RER, NAT. K. HOFFMANN PATENT LAWYERS D-8000 MÖNCHEN 81ARABELLASTRASSE 4 TELEPHONE (0811) 911087 V.

AKTIEBOLAGET SVENSKA PLÄ'KTPABRIKEN NACKA / SWEDEN

Device-length for the supply and distribution of large amounts of fresh air

The present invention relates to a device for supplying and distributing large amounts of supply air, preferably for rooms with large dimensions, such as sports halls and the like, or for rooms with systems with high air consumption, such as incinerator and the like, which device a plurality at least partially in a supply air duct includes distributors protruding into the room.

209823/0655

For the ventilation of sports halls and similar public Large rooms in which thousands of people spend long periods of time during demonstrations are always treading Problems. An air volume requirement of around 500,000 m / h is with regard to the unusually large room dimensions, especially with regard to the height of such rooms Spaces not unusual. In addition, there is the requirement for the lowest possible temperature difference (around lo ° C) between the room air and the supply air. In sports halls with ice rinks, there is also the problem that the air in a kind of beam of long range must be fed from the outside of the room so that the warm supply air does not come into contact with the ice surface and thaws it in places.

Another condition that must be met in a supply air device for such rooms is as low as possible Noise level on the order of NC

Similar problems also arise when ventilating rooms with systems with high air consumption, such as those in industry are common.

The aim of the present invention is to create a device which solves the problems described at the outset.

According to the invention, this is achieved in that each The distributor consists of a tube which protrudes into the supply air duct and at least at its end facing away from the outlet end Part perforated and with a piston for control that can be pushed back and forth in this part of the tube the volume of the supply air exiting the room is, further that the tube in the area of its outlet end with a conical, in the flow direction the air-converging part that is open to the room is.

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According to an expedient embodiment of the air supply device it is advantageous that the front part of the tube arranged in the region of the outlet end of a non-perforated pipe socket is formed.

According to an expedient embodiment, the non-perforated pipe sockets form the front part of the pipe and extend into the air duct via a wall Extend into the space.

It is also advantageous that the conical part of the outlet end can be rotated around the longitudinal axis of the pipe and / or is pivotable about an axis perpendicular to the longitudinal axis to change the direction and width of the discharge air.

Embodiments of the invention will now be described in more detail below with reference to the attached FIGS. 1, 2 and 5 and explained.

In the figures, 1 denotes a room in which a large amount of supply air at a relatively low height above the floor to be introduced by means of a number of distributors of a type to be described in more detail below. 2 designated a wall of a supply air duct 4, for example a transverse wall of the room. If the supply air volume, as stated above, should be about 5oo 'oöo'.nr / h, are about loo according to the invention executed distributor 3 required. Each manifold consists of a pipe that goes into the immediately behind or in front of the wall 2 located supply air duct 4 protrudes. The supply air ducts can be installed behind the wall 2 or else for example in the corners between the transverse walls and the Long sides of the room located hollow pillars be arranged. Each supply air duct 4 can have a large number of Have distributor 3 directed towards the room. The pipe 5 is perforated on its part 6 protruding into the channel 4. In the perforated tube is one in part 6 of the tube with respect to the wall 2 reciprocable piston

209823/0655 - 4 -

to regulate the volume and the supply air flow of the Tube 5 arranged. The piston rod is denoted by 7a and the direction of movement is indicated by arrows 8. The tube is in the illustrated embodiment at his through an opening in the wall 2 passing, front part (i.e. facing the wall) is provided with a conical part Io, the is open to room 1 »In an advantageous embodiment for the amount of air specified above the length of each tube about 2 meters and the diameter about ο.7 meters. The open one protruding into room 1 conical part Io can be concentric with a number Inserts of the same type as in the '27,669 patent Applicant described, be equipped. To prevent the ends of the supply air device protruding into the room The opening of the conical part can be used as paper baskets or to hold all kinds of waste expediently be covered with a wire mesh.

As shown in FIGS. 1 and 2, the front part of the pipe 5 is surrounded ^by a non-perforated pipe socket 9. This front part, as shown in FIG. 3, can also be made in one piece. Figures 1 and illustrate various exemplary embodiments. However, the conical part Io can be rotated about the longitudinal axis of the pipe and / or pivoted about an axis 11 perpendicular to the longitudinal axis in order to bring about a change in the direction and the range of the supply air.

The arrangement according to the invention of an adjustable piston J, which covers a correspondingly large perforated flow area, makes it possible to carry out noiseless control of the air flow. This cannot be achieved with conventional flaps, which generate a hissing noise especially when regulating down to small flow rates. According to the invention, the piston 7 also serves to

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to automatically clean the perforated, hard-to-reach inside of the perforated pipe.

As can be seen from Figures 1 and 2, the is conical Part Io rotatable about axis 11. The rear boundary line of the conical part is shown in FIG. 1 ■ and 2 shown in dashed lines. As can be seen from Figures 1 and 2, the conical part is so in the pipe socket 9 used that an annular gap is formed for the outflowing air, which is thus in these Executions partly fed through the mouth of the cone, partly in a ring shape at the boundary surface of the cone will.

209823/0655 - ⁶ -

Claims (4)

Claims Device for the supply and distribution of Supply air quantities, preferably for rooms with large dimensions, such as sports halls and the like or for rooms with systems with high air consumption, such as incinerators and the like, which device comprises a plurality of distributors projecting at least partially into a supply air duct of the room, characterized in that each distributor ( 3) consists of a tube (5) which protrudes into the supply air duct (4) and at least W perforated at its part (6) facing away from the outlet end (lo) and with a back and forth in this part (6) of the tube (5) sliding piston (7) is equipped to control the volume of the supply air exiting into the room (l), furthermore that the pipe (5) in the area of its outlet end (lo) with a conical, converging in the flow direction of the air, open to the room Part is equipped. 2. Device according to claim 1, characterized in that the front part of the tube (5) arranged in the region of the outlet end (lo) is not of one perforated pipe socket (9) is formed. J5. Device according to claim 2, characterized in that the non-perforated pipe socket (9) which is outside a wall (2) of the supply air duct (4) extending front and into the space (1) protruding part of the tube (5) forms. 4. Apparatus according to claim 2 and J ₁ characterized in that the conical part of the outlet end (lo) is rotatable and / or around the longitudinal axis of the tube (5) - 7 -209823/0655 about an axis (11) perpendicular to the longitudinal axis for change the discharge direction and width of the supply air can be swiveled. 209823/0656 Blank page