GB2415248A

GB2415248A - Air induction apparatus

Info

Publication number: GB2415248A
Application number: GB0512306A
Authority: GB
Inventors: Matthijs Gerard Johan Burger
Original assignee: NIJBURG INVEST BV
Current assignee: NIJBURG INVEST BV
Priority date: 2004-06-17
Filing date: 2005-06-16
Publication date: 2005-12-21
Anticipated expiration: 2025-06-16
Also published as: NL1026436C2; DE202005009299U1; BE1016642A3; GB0512306D0; GB2415248B

Abstract

An induction apparatus for providing fresh air in a room or office, comprises an air collecting chamber 3 provided with an air inlet 2, which air collecting chamber comprises a wall 6 having provided therein at least one air outlet 4 with an outflow opening for generating a ventilation air stream, and which air outlet 4 is provided with a shutoff valve 7 for at least partly covering the outflow opening for regulating the air outflow. The shutoff valve 7 comprises a magnetic strip element which is slidable along the sheet steel wall 6 of the air collecting chamber 3 for providing an airtight closure between the shutoff valve and the outflow opening. The air outlets 4 may be in the form of a venturi generating a powerful air stream P, so that induction C can occur and air from the room rises and is drawn through an air-conditioning unit 5.

Description

Title: Ventilation apparatus The invention relates to an induction

apparatus, conlprig: an air collecting chamber provided with an air inlet and at least one air outlet for generating a ventilation air stream; which air outlet is provided with a shutoff valve for at least partly covering an outflow opening for regulating the ventilation air stream.

Such apparatuses are used, as is well known, for proviLing ventilation in buildings and spaces where there is a need for ventilation, for instance in office spaces, etc. The 1mown apparatuses have a standard dimensiou.=g.

which is in line with conventional module sizes in the construction industry, which makes it easily possible, for instance, to install such an apparatus per nodule, for instance per 1.S, meters, which then corresponds to a prede,termined ventilation need per nodule in the normal use of the space.

It happens, however, that in the layout of a building, it needs to be taken into account that a space will be used more intensively, for instance as a space for meetings, or the e, so that the need for ventilation will increase.

This is Cult for the construction of the induction apparatuses.

On the one hand, there is a need to be able, with the same apparatus, to provide for enlarged ventilation need, in order to avoid having to use any complicating additional models, and to preserve flexibility in case of any later rearrangement of the space. On the other hand, it has been found that the known apparatuses are not easily variably adjustable in that closing oB the outflow openings readily leads to undesirable noise, such as whistling, partly due to the outflow velocities and pressures used in the ventilation apparatus, in particular in the use of induction apparatuses. It is to be understood here that an induction apparatus utilizes a powerful air jet generated by means of an air pump, which air jet, through induction, sets au an stream in motion.

So far, it has appeared that these disadvantages can be overcome only by using relatively expensive constructions, rerderg the apparatus lees attractive economically. Accordingly, the object of the invention is to provide an inexpensive and simple construction whereby the abovedescribed disadvantages are overcome and whereby more easily an adjustable ventilation range can be provided without entailing uritatg background noise.

This is achieved by the use of the features according to claim 1. In particular, it has been found that a nagnetic material can provide a simple and particularly robust airtight closure, not leaving any small slits giving rise to turbulences causing noise. Preferably, the air collecting clamber comprises several outflow openings, with the valve being conlired for at least partly closing off at least some of the outflow Openings. Further, the valve is preferably strip-shaped, and capable of being moved Tong the wall. In addition, the strip, a pattern of recesses may be prodded, matching at least a portion of a pattern of outflow openings provided in the wall for providing a variable ventilation air stream. This renders it possible to provide a variable adjustability, with, for instance, several positions of use.

The Russian publication SU844940 shows a ventilation apparatus with valve energized by magnetic action. The Japanese publication 1120154 chows a mimetic attachment piece for modifying the outOow direction.

The American publication No 5479984 shows a ventilation operung which can be covered by a magnetic panel. This publication does not show any adjustable induction apparatus.

In a preferred embodiment, the strip comprises a sliding element which extends through a stall opening to the outside in order to allow its berg slid 26 from outside of the sir collecting chamber, the strip near the sliding element being likewise provided with a magnetic element. The magnetic element thereby prevents also the possibility of irksome air streams arismg along the slide.

Further advantages and features will be elucidated with reference to the drawing. In the draving: Fig 1 shows an example of an air ventilation apparatus according to the invention; S Fig. 2 BROWS a first embodiment of a stup-shaped shutoff valve according to the invention; Fig, S shows a second embodiment of a strip shaped shutoff valve according to the invention; Fig, 4 shows another embodiment of a shutoff valve according to floe invention; Fig. 5 shows yet another embodiment of a shutoff valve according to the invention; and Fig, 6 shows the world principle of a preferred embodiment of a slide control for the shutoff valve according to the invention.

Fig. 1 shows an induction apparatus 1 for providing Mesh air in a apace of a room or office space or the like, with an air inlet connected to an air collecting chamber 3, which is pressurized bar the air inlet 2 practice a slight exces, pressure of cat 50 Pascal or more, for mstanoe 200 Pa). The air can escape via air outlets 4, thereby providing ventilation in that Mesh, possibly conditioned, air is supplied into the space, According to the example, the air outlets 4 have the form of a venturi for generating a powerful air stream P. fiO that induction C can occur and air Mom the room rises and is, drawn along an air conditioning Wit 6,, According to the example, these venturi forms have been punched in a metal plats 6, which is therefore magnetically sensitive.

In the example of Fig. 1, the inwardly situated air outflow openings 4' are closed lay a shutoff valve 7'. As a rer,ult of these air outflow openings being closed, the mount of ventilation air nowing out is limited. The outwardly situated air outflow OpBgS 4, by contrast, are opened, with a shutovalve 7 affording a passage to the air outflow opening 4 According to the invention, the air outlet 4 comprises a magnetic element 8 to provide an airtight closure between the shutoff valve 7 and the outflow opening 4. According to the example, the magnetic element 8 BCtP on the magnetizable was 6, which is manufactured Mom sheet steel or the like, to pronde an airtight closure between the shutafvalve 7 and the outflow opening 4.

Fig. a shows, a wall 6 which comprises multiple cutDow openings 4 (Only a few are indicated explicitly with reference numerals). In the example of fig. 2, the shutofvalve 7 is, formed by a magnetic strip which is slidable along the sheet steel wall 6. Owing to the magnetic attractive force. the strip 7 is pressed over its entire surface agnst the wall 6, at least over the surface that forms or caTI form a closure for the openings 4. By moving the strip 7 traneverselv to the first row (I) of openings 4, that row cats be sealed, SD that the ventilation apparatus used with a limited an out10. For surroundings where such is desired, the first row (I) of operunge can be simply exposed by moving the strip 7, thereby enabling an enlarged delivery of air Fig. shows an alternative embodiment, in which the strip 7 i& moved in the longitudinal direction and computes a pattern of recesses 9 matching at least a portion of a pattern of outflow openings 4 provided in the wall 6 for Q providing a variable ventilation air steam, If the openings 4, 4' have a mutually different size, the possibility of vamug the air stream can be given an extra dimension.

Pig. shows an alternative which, using a magnetic element 8, an improved closure of a shutovalvs 7 is achieved. In this example, a shutoff valve 7 projects partly through the wall plate and can be moved vertically up and down by 1iflG means, not shown.

Fig. shows a further application of the invention, whereby using a magnetic element 8 a partial closure of an outflow opening 4 is ejected.

Fig. 6(A) shows the outflow opening, which may be in the form of a slit perpendicular to the plane of the paper, a nearly closed condition, so that the amount of outflow air is limited. Fig. 5(B) shows the outflow opening 4 in a completely opened condition, which the amount of outflow air is at a maximum Fig. 6 shows a preferred embodiment for the invention, in which the 6 strip 7 comprises a sliding element 10 which extends through a wall opening 11 to the outside to enable its bemg slid from outside of Me air collecting chamber 3. According to the example shown, the strip magnetic throughout its length, Owing to the magnetic action near the slide, the slide is properly closed airtightly and no undesired air can escape there. The sliding movement of the strip 7 results in the clearance and closure of the ah outlet 4. Owing to the magnetic action adjacent the air outlet, there, likewise, a robust airtight closure is realized. It vnll be endent that the stup 7 may be filrther provided with soft sealing layers such as foam or felt or the like.

The invention is UD.dGrBtood not to be limited to the examples represented in the figures. The invention can compuse variations and modifications of the examples without deviating from the concept of the invention. Such variations are understood to [all with the scope of the following claims.

Claims

1. induction apparatus, comprising: - an air collecting chamber provided with an air inlet and at least one air outlet for generating a ventilation air stream; - Much air outlet is provided with a shutof f valve for at least partly covering an outflow opening for regulating the ventilation air stream; characterized that - the shutoff vane comprises a magnetic strip element included in the air collecting chamber, for providing an airtight closure between the shutofivalve and the outflow opening.

2. he induction apparatus according to claim 1, characterized in that the air collecting chamber comprises multiple outflow openings, and that the valve configured fi: r at least partly closing at least some of the out1ovr opege,

3. An induction apparatus according to clang 1 or 2, characterized in that the shutoff valve is slidable along a wall of the air collecting chamber.

4. An induction apparatus according to clean 8, characterized in that the strip comprises a pattern of recesses which matches at least a portion of a pattern of outflow openings provided the wall for providing a variable ventilation air stream.

5. An induction apparatus according to claim 3 or 4, characterized in that the strip comprmee a sliding element which extends through a wall opening to the outside in order to enable its berg moved from outside of the ah collecting chamber, wherem the strip near the sliding element is also provided with a magnetic element.

6. An induction apparatus according to at least one of the preceding claims, characterized in that the air collecting chamber in operation is held at an excess pressure which is greater than 50 Pascal.

7. An induction apparatus according to at least one of the preceding claims, characterized that the shutoff valve comprises a soft sealing layer of foam or felt or the lilce.

8. An induction apparatus according to at least one of the preceding claims, characterized in that tbie shutoff valve extends at tenet partly through the air outflow opening.