Slide valve for a ventilation device

Abstract

The present invention relates to a valve device (1) for a ventilation installation. The valve device (1) comprises a vent surface (4) that is equipped with a plurality of vent apertures (5) and a slide valve (6) comprising a slide valve plate (7) equipped with a plurality of slide valve apertures (8). The valve plate formed such that it can be varied between taking a first position (I) at which the vent apertures (5) are covered by the slide valve plate (7), and taking a second position (II) at which at least some vent apertures (5) have surfaces that overlap with some slide valve apertures (8) such that an air flow is permitted through the valve device (1). The valve device (1) is designed such that when the slide valve plate (7) is positioned on that side of the vent surface (4) that normally has a relatively higher pressure, the high pressure side (9), than the other side, the low pressure side (10). The slide valve plate (7) is formed such that the force from the pressure difference between the high pressure side (9) and the low pressure side (10) is sufficient to retain the slide valve plate in its place at the vent surface (4) when it is in the first, closed position (I).

Description

TECHNICAL FIELD[0001]The present invention relates to a valve device and a slide valve for a ventilation installation.BACKGROUND[0002]During ventilation fresh air is in many cases supplied via supply air diffusors, it may be one or more that are connected to a main pipe, where supplied fresh air is brought into motion towards the supply air diffusors via the main pipe by means of a fan arrangement. A supply air diffusor may in its least complicated form be an opening or aperture in the ventilation system. The supply air diffusor may also be integrated with a cooling or heating baffle to be able to control the temperature of the supplied air. The supply air diffusor may in these cases be arranged such that the fresh air that is supplied to the room brings existing air in the room such that is passes a heat exchanger in a cooling / heating baffle and is tempered.[0003]It is sometimes desirable to control the flow of supplied air in dependence of the present need. For example, a conferen...

AI Technical Summary

Benefits of technology

The slide valve and valve device in this patent are designed to be easy to install and adjust using simple methods. The valve is pressed in place and retained against the vent surface only by the pressure difference between the low and high pressure sides, which simplifies the design of the valve device. The mechanism to change the valve's position is also simpler since it does not need to overcome other added frictional forces. The valve device also includes the option to change the valve's position by pulling or pushing it, which makes it easier to control and prevents bending or folding of the valve plate.

Problems solved by technology

Leakage leads to unnecessary ventilation and thus energy waste.

Leakage may also lead to the occurrence of undesired noise in the form of howling or whining vents.

It is, however, desirable to develop a siding vent with an uncomplicated and reliable design.

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