CZ23328U1 - Pipe member for air distribution - Google Patents

Description

Air distribution duct

The Industrial Property Office does not ascertain in the registration procedure whether the subject of the utility model meets the conditions of eligibility for protection pursuant to Section 1 of Act no. No. 478/1992 Coll.

CZ 23328 Ul

Air distribution duct

Technical field

The invention relates to a duct for air conveying and distribution, comprising a wall of woven or nonwoven fabric or a film having a perforated portion adapted to pass air and distribute it around the duct.

BACKGROUND OF THE INVENTION

The air ducts hitherto known for conveying and distributing air from woven or nonwoven fabric or foil, also called textile diffusers, consist of a material sewn into a closed shape of various cross-sections. This is usually circular, but generally it is always a part of the circle, or a combination of several such components. Newly marketed are also textile ducts of rectangular or triangular cross-section, described, for example, in utility model CZ 21618. The duct is in some way permeable to air and inflated by air flow in operation, whereby air is distributed by passing through a breathable material or perforation. The right air distribution is one of the most important functions of the air distribution system.

A certain disadvantage of the known air duct can occur especially in places with a longitudinal longitudinal velocity of the supplied air from the fan, which is usually in particular near the inlet area of the duct. In the vast majority of cases, there is an oblique air outlet from the perforated duct. This deviation from the ideal perpendicular ascent may cause areas that are not directly ventilated.

SUMMARY OF THE INVENTION The object of the invention is to provide a textile duct or a part thereof which allows the air flow to be directed so that the distribution is preferably perpendicular to the diffuser surface immediately from the beginning of the perforated area. At the same time, it must preserve the advantages of textile or foil distribution, especially the possibility of washing in a washing machine.

The essence of the technical solution

These problems are solved and the deficiencies are largely eliminated by a duct for air transport and distribution comprising a wall of woven or nonwoven fabric or a film having a perforated portion adapted to pass through and distribute it around the duct, provided with at least one inner baffle for directing distributed air, wherein at least a portion of the inner baffle protrudes into the interior of the duct member. Preferably, the inner baffle is of a breathable and / or perforated or reticulated material.

This purposefully designed inner baffle element is adapted to direct distributed air, i.e. to prevent or reduce oblique air flow from the duct. By installing an internal restrictor that separates air at high longitudinal velocity from the surface of the duct and at the same time allows air to pass through, the air flow exiting the wall of the duct member is perpendicular. The use of these internal baffles in the area of all perforated portions of the wall of the duct member eliminates the above mentioned negative effect. By varying the combination and shaping of the baffle elements, the direction of the air leaving the duct can be influenced to some extent.

Preferably, a highly breathable woven or nonwoven web or film is used as a baffle element, complemented by a series of holes through which air passes through the outer surface. From a functional point of view, it is furthermore advantageous to use as a guide element a rigid mesh with suitably selected openings. At the same time, the added baffle layer is shaped such that it does not touch the wall of the pipe member with its functional area.

- 1 CZ 23328 Ul

Preferably, the deflector strip may be installed along the entire length of the duct directly at the perforations. It is also advantageous to fasten the strip forming the guide element to the pipe part after shorter sections. This can be done, for example, by stapling. The formation of ripples or pleats may be used as a suitable method to delay the added layer. A concave portion is formed between the connection points, which then forms a cavity between the deflector element and the perforated wall portion of the duct member.

In a preferred embodiment of the invention, a screen is used as the material of the inner baffle element, which is fastened directly to the perforated portion of the pipe member.

In a particularly preferred embodiment, the inner baffle member is in the form of a strip that extends in the longitudinal direction of the tubular member and is attached to the perforated portion at regular or irregular intervals such that it protrudes from the perforated portion in the areas between these attachments.

Alternatively, it is also possible to use an inner baffle element made of an airtight material. In this case, the inner baffle element is preferably in the form of a variable-width strip that extends in the longitudinal direction of the pipe member and is fixed at regular or irregular intervals to the perforated portion in its extension region so that in the regions between said attachments protrudes from the perforated portion.

The present technical solution provided a very simple and practically easy-to-use redirection of the oblique outlet of the air flow from the ductwork. The main advantage of the solution is the possibility to remove zones with imperfect air distribution in the room. BRIEF DESCRIPTION OF THE DRAWINGS

The technical solution is explained in more detail by means of a drawing. Giant. 1a shows a pipe section of rectangular cross-section according to the present invention with an internal rectifier element installed. Giant. 1b shows a detail of a reticulated baffle element mounted on the perforated portion of the wall of the duct member.

Examples of technical solution

Fig. 1a shows a duct 1 of an air duct for transporting and distributing air, which is made of a woven fabric of tubular shape, in this case a rectangular cross-section. In the longitudinal direction of the duct member there are sewn two strips forming the deflecting elements 2, which are made of a cross-linked material and have an undulating shape, in other words they are stitched at regular intervals to the perforated wall 3. The deflector elements 2 are located directly on the perforated area 3 through which the supply air is distributed.

The deflector element 2 may also be made of a breathable, for example textile material, or a perforated material.

It is also possible to manufacture the baffle element 2 from an airtight material. In this case, it may be advantageous if such a deflector element 2 has a variable width and is in its widened region attached to the wall of the duct 1, while its narrowed area projects into the interior space of the duct 1. other areas, for example in a narrowed area. Or it is possible to attach it in the tapered area, so that such a deflector element 2 forms waves, wherein in the air flow direction of the duct 1 their first side (rising from the wall of the duct 1) has a smaller width than the second side (descending to the wall AND). Another possibility is an irregular attachment of the deflector element 2, either in terms of the distance of the individual attachment points or in terms of its attachment region - tapered or expanded. The purpose of said structures is to facilitate the entry of air into the space between the wall of the duct 1 and the baffle element 2. It is also possible to provide such a baffle element 2 in addition with perforations in some of its regions.

-2EN 23328 Ul

Industrial applicability

Air ducts containing duct components with internal baffles according to the present invention are industrially applicable to all installations where it is desirable to eliminate areas with incomplete air distribution due to the oblique air flow outlet generated by the natural physical flow.

Claims (7)

PROTECTION REQUIREMENTS A duct (1) for conveying and distributing air, comprising a wall of woven or non-woven fabric or of a film having a perforated portion (3) adapted to pass air and distribute it around the duct (1), characterized in that the duct member (1) is also provided with at least one inner deflector element (2) for directing distributed air, wherein at least a portion of the inner deflector element (2) projects into the interior space of the duct member (1). Pipe element (1) according to claim 1, characterized in that the inner baffle element (2) is made of a breathable and / or perforated or crosslinked material. 15 Dec Pipe element (1) according to claim 1 or 2, characterized in that the inner deflector element (2) is fixed to the wall of the pipe element (1) in the region of the perforated portion (3) of the pipe element (1) and / or in the region. adjacent to the perforated portion (3) of the duct member (1). Pipe element (1) according to claim 3, characterized in that at least one part of the inner baffle element (2) extends at a distance from the adjacent perforated part (3) for 20 to form at least one cavity between the perforated portion (3) and the deflector element (2). Pipe element (1) according to any one of claims 1 to 4, characterized in that the inner deflector element (2) is in the form of a strip which extends in the longitudinal direction of the pipe element (1) and is attached to the regular or irregular spacing to the perforated portion (3) so that it protrudes from the perforated portion (3) in the areas between these attachments. 25 Pipe element (1) according to claim 1, characterized in that the inner baffle element (2) is made of an airtight material. Pipe element (1) according to claim 6, characterized in that the inner deflector element (2) is in the form of a variable-width strip which extends in the longitudinal direction of the pipe part (1) and is always attached at regular or irregular intervals. your area 30 extending to the perforated portion (3) such that, in the regions between said attachments, the tapered region projects from the perforated portion (3).