CZ28924U1 - Air conditioning air terminal unit - Google Patents

Description

Technical field

The invention relates to an air diffuser for air distribution which includes a chamber, an inlet for supplying air to the chamber, and an exit wall of a woven or nonwoven fabric or a film for distributing air to the air conditioned space, wherein at least one through hole aperture is provided in the exit wall for distribution air.

Background Art

The air conditioning diffusers known so far, made of woven or non-woven fabric or foil, are formed by a frame structure with textile panels (ceiling or wall diffusers). The outlet wall of the diffuser may be perforated, optionally provided with through holes, and air is distributed through the perforations / openings. Proper air distribution is one of the most important functions of the HVAC system.

While in the case of piping components for air distribution it is usually required that the air exits the pipe wall perpendicularly, it is desirable in the case of wall and ceiling diffusers to distribute the air in different directions.

In the known textile diffusers, however, it often happens that all the distributed air exiting the through-holes of the exit wall often produces a uniform flow, causing drafts to form.

In the case of ceiling and wall textile diffusers, the perforation or microperforation of the outlet openings is usually insufficient in terms of volume of distributed air.

The object of the present invention is to provide an air diffuser for air distribution which, in a constructive / manufacturing manner, allows directing outgoing air so that the distributed air flows into the room in different directions and does not create draft. At the same time, the advantages of textile or foil distribution, especially the possibility of washing in a washing machine, and low weight must be preserved.

The essence of the technical solution

The above object is solved by an air distribution duct comprising a chamber with an air inlet and an outlet wall of woven or nonwoven fabric, wherein the exit wall comprises at least one set of through holes for air distribution to the surroundings and a set of routing pockets for directing the air exiting the air duct through the through openings, each directional pocket being attached to the outlet wall on the outside thereof, spaced apart at least one through hole and being open to a space adjacent to the outer wall.

Furthermore, the air diffuser preferably comprises a plurality of additional apertures formed in the exit wall to increase the air flow through the exit wall.

In a particularly preferred embodiment, the through-hole array with the directional pockets is adapted to direct at least a portion of the air exiting the exit wall to form a vortex air flow.

At least some of the additional openings preferably have an area of 0.1 to 1 mm ² , in particular 0.1 to 0.3 mm ² . Preferably, at least some of the through holes have a larger area than the additional openings.

In a preferred embodiment, the plurality of additional apertures are arranged on a circular surface and the through holes with directional pockets are adapted to direct air in a tangential direction relative to the at least one circle concentric with said circular surface of the supplementary apertures.

-1 CZ 28924 Ul

The routing pocket may be attached to the exit wall by a pair of its lateral edges, which form an acute angle with each other and / or the directional pocket defines a cavity that extends toward its exit opening.

The routing pocket preferably has the shape of a truncated cone shell.

Clarifying drawings

The invention will now be described in more detail by way of exemplary embodiments schematically shown in the drawings, in which: Figure 1 is an axonometric top view of a diffuser facing downwardly in the outlet wall; Figure 2 is a cross-sectional view of the diffuser of Figure 1; 3 is a view of a particularly preferred embodiment of the outlet wall of the diffuser, and FIG. 4 shows an exemplary embodiment of the directional pocket.

Description of exemplary embodiments

As can be seen from the drawings, the outlet includes a chamber 1 with an inlet opening 3 for the air inlet and the air inlet 3 respectively. for connection to a supply line 6. Preferably, the chamber 1 is made of woven or nonwoven fabric or film.

According to this invention, chamber 1 also includes an exit wall 2 which is also made of woven or nonwoven fabric or film and includes a plurality of through holes 22 for distributing air from chamber I to the surroundings.

A routing pocket 23 is attached to each passage opening 22 attached to the outlet wall 2 of the air diffuser from the outside. The projection pocket 23 in the projection perpendicular to the exit wall 2 covers the respective through hole 22 from the outside. An open cavity is formed between the directional pocket 23 and the outlet wall 2 of the pipe, into which said through hole 22 is directed. 23 expands. Advantageously, the routing pocket 23 may have the shape shown in FIG. 4, that is, the shape of the portion of the cone or the truncated cone. However, other shapes are also possible, such as the shape of the pyramid shell, the truncated pyramid, the shape of the ball shell, and the like. To ensure a stable shape of the directional pocket 23 and hence its proper function, its sidewalls are attached to the wall of the ventilation duct.

The routing pockets 23 are arranged to direct the protruding air each to a different direction, preferably so that at least in the region adjacent the exit wall 2, air flows from the stack of directional pockets 23 to the sides, preferably tangentially to the common circle, or to two or more concentric circles. The air outlet from the directional pockets 23 is indicated by the arrows in the dashed line in FIG. Alternatively, the routing pockets 23 may be arranged to direct air from the through holes 22 perpendicular to the edges of the exit wall 2 and / or radially with respect to a circle centered at the center of the exit wall 2.

Generally, the routing pockets 23 are adapted to divert the air flow from the respective passage opening 21 from a direction perpendicular to the plane of the exit wall 2, respectively. tilting the air flow to the plane of the exit wall 2, wherein preferably each directional pocket 23 directs the air flow in a different direction.

Preferably, the through holes 22 are as large as possible, for example, their area may correspond to the perpendicular projection of the cavity in the respective directional pocket 23.

In order to increase the air flow through the exit wall 2, the through holes 22 with the directional pockets 23 can be supplemented with additional holes 21 which are not provided with directional pockets 23. The additional holes 21 are preferably smaller than the through holes 22 and can be formed, for example, as microperforation or perforation perforations. walls 2. Preferably, the basic through-holes 21 each have an area of 0.1 to 1 mm ² , preferably 0.15 to 0.3 mm ² .

The additional holes 21 in the illustrated embodiment of FIG. 3 are arranged in two sets, both on a circular surface and on the circumference of the outlet wall 2.

Also, in the illustrated exemplary embodiment, they are arranged in two systems, both inside a circular surface with complementary through holes 21 and, on the other hand, along the circumference of said circular surface.

The routing pockets 23 arranged outside the annular surface of the basic through holes 21 preferably direct the air tangentially with respect to the circumference of said circular surface, or with respect to the circle concentric with the circular surface of the basic through holes 21.

The routing pockets 23 arranged within said circular surface of the supplementary openings 21 preferably direct air into mutually different directions, in this exemplary embodiment perpendicular to each other, but in essence they also direct the air tangentially with respect to the circle concentric with the circular surface of the complementary holes 21 .

The air handling duct according to this technical solution works as follows:

Air is supplied to the inlet of the air duct, which then enters the air-conditioned space through the apertures 21, 22. A portion of the air exits through the apertures 21, in a direction perpendicular to the outlet wall 2. The air exiting through the apertures 22 is routed by the directional pocket 23 into a space adjacent to the exit wall 2, to different sides. In doing so, this stream entrains at least a portion of the air exiting from the additional openings 22. This creates a predominant vortex or air flow. centrifugal direction of the air flow from the air duct.

Preferably, the entire air diffuser is made of woven or nonwoven fabric or foil so that it can be machine washed and, in addition, has a significantly lower weight than the metal diffuser.

Claims (2)

PROTECTION REQUIREMENTS An air distribution diffuser comprising a chamber (1) with an air inlet (3) and an outlet wall (2) of woven or nonwoven fabric or foil, the outlet wall (2) comprising at least one set of through holes (3). (22) for distributing air to the environment, further comprising a plurality of directional pockets (23) for directing air exiting the duct through the through holes (22), wherein each directional pocket (23) is secured to the outlet wall (2) on its outer side, spaced apart at least one through hole (22) and is open to the space adjacent to the outer wall (2). An air vent according to claim 1, further comprising a plurality of additional openings (21) formed in the outlet wall (2) to increase air flow through the outlet wall (2). An air vent according to claim 1 or 2, characterized in that the set of through holes (22) with the directional pockets (23) is adapted to direct at least a portion of the air exiting the outlet wall (2) to create a vortex air flow. Air duct according to claim 2 or 3, characterized in that at least some of the additional openings (22) have an area of 0.1 to 1 mm ² , in particular 0.1 to 0.3 mm ² . An air vent according to claim 4, characterized in that at least some through holes (22) have a larger surface area than the additional holes (21). An air outlet according to any one of claims 2 to 5, characterized in that the plurality of additional openings (21) are arranged on a circular surface and the through holes (22) with directional pockets (23) are adapted to direct air in a tangential direction with respect to at least one circle concentric with said circular surface of the additional holes (21). -3 CZ 28924 Ul An air diffuser according to any one of the preceding claims, characterized in that the direction pocket (3) is fixed to the outlet wall (2) by a pair of its side edges which form an acute angle with each other and / or the direction pocket (3) defines a cavity which extends towards its outlet opening. Air duct according to any one of the preceding claims, characterized in that the directional pocket (3) has the shape of a frustoconical part of the casing. 2 drawings