FI109307B - Tubular air distribution means - Google Patents

Description

109307

PIPELINE AIR DISTRIBUTOR

The present invention relates to a tubular manifold for supplying air to a room 5 or the like, the manifold having a plurality of holes substantially smaller in diameter than the pipe, each having a separate nozzle through which air flows from the manifold to the room.

10 Ventilation is used to control room airflows, ie by supplying clean outdoor air through special louvers, valves or similar air distribution devices, and by removing special air from the room, using special exhaust air devices to remove impure, heated or excessively damp air. In the ventilation, air is introduced into the room through air distribution means in one or more jets which, in the desired direction, are vented far into the room, generally at the top of the room. The showers draw room air with induction and mix it so that the entire room is filled with as homogeneous a mixture of room air and outdoor air as possible, with nearly the same temperature, impurity, humidity, etc. throughout the room.

The present invention relates essentially to tubular air distribution devices having a plurality of small outflow openings. Such air distribution devices are disclosed e.g. It is common to them that the dispenser surface has outflow openings which are considerably smaller than the diameter of the tube and are limited by nozzles protruding from the diaphragm of the dispensing member. The nozzles are thus made of the same material as the diaper. They are formed, for example, by stamping.

30 Tubular air distribution devices in which the nozzles are formed by separate nozzle-mounted nozzle parts are also known. Each such nozzle member has one hole through which air flows. The holes are straight and parallel to the radius of the pipe.

It is an object of the present invention to provide improvements to these known air distribution devices. In particular, attempts have been made to reduce the sound level of the distributor and to improve induction, i.e. mixing of the supply airflow with the room. In addition, the nozzles protruding from the surface of the 2,109,307 tubular dispenser are not particularly advantageous in appearance.

The manifold according to the invention is characterized in that the air flow ducts 5 are in different directions with each other.

A preferred embodiment of the dispensing member according to the invention is characterized in that the cross-section of the air flow ducts is reduced in the direction of air flow.

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Another embodiment of the dispensing member according to the invention is characterized in that the cross-section of the air flow ducts decreases substantially uniformly, for example conically.

Another preferred embodiment of the invention is characterized in that each nozzle has four airflow ducts, which are arranged substantially equidistantly, all of which are in different directions and form a fan-like configuration.

Thanks to the invention, the induction of the tubular air distributor, i.e. the mixing of the air with the room, is improved because the shape and arrangement of the air flow ducts causes the air to swirl. A reduction in the sound formation of the tubular dispenser according to the invention has been found, which is a considerable improvement. In addition, the product! The appearance of the tea is more pleasant, since the nozzles do not protrude from the surface of the manifold towards the room.

In the following, the invention will be explained in more detail by way of a preferred embodiment with reference to the accompanying drawings, in which: Figure 1 shows part of a tubular air distribution member having a biscuit. nozzles according to the invention.

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Figure 2 is an enlarged detail C of Figure 1.

Figure 3 shows a nozzle part according to the invention and an arrangement of its air flow passages.

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Figure 4 shows a section along line A-A in Figure 3.

Figure 5 is a section along line B-B of Figure 3.

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Thus, Figure 1 illustrates a portion of a tubular air distribution member 1 having holes formed in its casing to which nozzle members 2 are attached. The number and location of the holes (and nozzles) may vary as necessary. As mentioned above, Figure 2 is an enlarged detail C. This detail illustrates one surface of the 10 nozzle portions which is visible on the outer surface of the dispenser. In this example, the nozzle portion 2 is provided with four air flow ducts 3 substantially equidistant. The number of air flow ducts is not otherwise limited, but must be at least 2.

In Figure 3, the arrangement and shape of the air flow ducts 3 are illustrated in more detail.

It is found that each air flow duct is uniformly convergent in shape, e.g., conically, in the direction of air flow. As the conduits narrow, they fan-blade from a central axis of the nozzle portion extending from the center of the nozzle perpendicular to the plane of the drawing in Figure 3. Thus, the surface of the nozzle portion 2 shown in Figure 2 is the surface (outside) On the inside surface of the nozzle member, i.e., on the inside of the manifold, the position and size of the air flow passages are shown in Figure 3 as larger circles. The air flow passages have a diameter of about 3-5 mm, preferably about 4 mm, inside the tubular dispenser and about 1.5-3.5 mm, preferably about 2.5 mm, on the outside of the tubular dispenser 25.

I * '·' Figure 3 also shows some details of the dimensioning of this embodiment. Preferably, the dimensions D-K are as follows: V *. 30 D = 2.5mm, E = 3.0mm, F = 2.5mm, G = 3.0mm, H = 2.5mm, l = 3.0mm, J = 2.5mm, K = 3.0mm.

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Fig. 4 is a section along line A-A in Fig. 3 and line B-B in Fig. 5, respectively. It is also apparent from these figures that the nozzle member 2 is formed of a substantially cylindrical, except for the flow channels 3, a female body member 2 'and a smaller diameter attachment member 2' for securing the nozzle member 2 to the hole in the distributor member. For secure attachment of the nozzle member 109307 4, said smaller portion 2 "has a diameter substantially equal to the diameter of the hole in the dispensing member 1, except for the smaller portion 2" at the outer peripheral extension 4 which is pressed through the dispensing member bore 5 saws in place.

Most (body part 2 ') of the nozzle 2 remains inside the tubular dispensing member 1. Therefore, the nozzles must be installed before the tubular manifold is formed in a tubular form. After all, such tubes are wound from the strip material 10 which is initially rolled.

It will be apparent to one skilled in the art that the invention is not limited to the exemplary embodiments set forth above, but may be varied within the scope of the appended claims.

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Claims (8)

109307 A tubular manifold (1) for supplying air to a room or its Tapai-5, the manifold having a plurality of holes substantially smaller in diameter than the pipe, each with a separate nozzle (2) through which air flows from the manifold into the room; (2) is two or more air flow ducts (3), characterized in that the air flow ducts (3) are different from one another. Dispenser according to Claim 1, characterized in that the cross-section of the air flow ducts (3) decreases in the direction of air flow. Dispenser according to Claim 2, characterized in that the cross-section of the air flow ducts (3) decreases substantially uniformly, for example conically. Dispenser according to one of Claims 1 to 3, characterized in that each nozzle has four air flow ducts (3) which are arranged substantially equidistant and which are all in different directions with respect to one another. form a fan-like formation. i! Dispenser according to Claim 4, characterized in that the air flow ducts (3) have a diameter of about 3-5 mm inside the tubular dispenser (1), most preferably about 4 mm, and a tubular dispenser (1). ) on the outside approx. 1.5-3.5! »* I: mm, preferably about 2.5 mm. »* · Manifold according to Claim 4 or 5, characterized in that the ends of the longitudinal axes of the air flow ducts (3) inside the manifold (1) are farther from the central axis of the nozzle part (2) than the opposite of the air flow ducts. at the ends, ie airflow ducts converging in the direction of air flow the central axis of the nozzle part. Dispenser according to one of Claims 1 to 6, characterized in that the nozzle part (2) is composed of a substantially cylindrical body with a number of flow channels. without hearing from the closed body (2 ') and the smaller mounting part (2') of diameter 109307 for attaching the nozzle (2) to the hole in the dispensing member. Distributor according to Claim 7, characterized in that the diameter of said 5 smaller fastening part (2 ") is substantially equal to the diameter of the hole in the dispensing member (1), except for the extension (4) at the outer periphery of the smaller part (2"). through the hole of the dispensing member (1) from the inside of the dispensing member so that the nozzle part (2) snaps into place. t • I> · t », t · I t ·» · I · I t «I» · »· • t I · • • I · i * * Mi ·· 109307