DE8816674U1 - Device for humidifying air - Google Patents

Description

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DR. H. FEDER
DIPL-PHYS. DR. W.-D. FEDER. .,;. _: , , ....:

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27.12.1989

Leonhard Foidl,'A-&263 Fügen/Austria Device for humidifying air.

The innovation concerns a device for humidifying air according to the generic term of the protection claim.

Such a device can be found, for example, in DE-OS-34 t'5 198. There, a room fountain or the like is shown, the water collecting basin of which has many holes in the bottom; the bottom of the water collecting basin thus represents a perforated plate through whose opening the water runs distributed downwards into the lower part. The air to be humidified and cleaned is introduced by the fan into the 8-stage air flow zone through side air inlet openings. The air flows upwards through a central opening in the water collection basin into the space inside the water bell formed by the fountain and then through the water bell to the outside, being humidified and cleaned both in the sprinkling zone and as it passes through the water bell. In order to achieve a good humidification and cleaning effect, the air in the sprinkling zone should pass through an almost dense arrangement of falling water drops so that it is divided into the smallest volume units that are capable of absorbing maximum moisture. The division into straight-line falling water drops should be maintained over the entire height of the sprinkling zone. Due to the Coanda effect, however, in the case of perforated plates, sieves or the like, the escaping water merges after very short periods of time. Drop heights lead to jets of larger diameter, so that contact with the air flowing around the jets remains poor.

The innovation now has the task of creating a

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To create facilities of the type mentioned above, in which the contact between water and air leads to a significantly improved moisture absorption.

This is solved in a new way by having the water passage openings of the perforated plate have guide surfaces that protrude downwards, created by the perforation.

Such holes are punched with a pointed, angular tool, whereby the punching base has openings of larger diameter so that the slit tabs are bent out to form the guide surfaces that protrude downwards.

Due to this design of the perforated plate, the Coanda effect mentioned above does not occur, so that the air to be humidified flows through a sprinkling zone in which conditions are almost equivalent to a cloudburst or heavy rain.

The water penetrates through the moving air in a fine distribution, whereby a cross or object can be achieved by means of the fan. Without a fan, however, a direct current is created, as the water falling through the sprinkler channel sucks in air and releases it again at the bottom. It is understandable that this also results in an excellent cleaning of the air from dust or similar, which collects in the lower part.

New facilities can be installed in larger versions

runqpn be arranged on a mobile base and be equipped with an appropriate control system, which includes a humidity meter, to regulate the humidity. They are suitable for all types of living spaces,

such as living rooms, offices, restaurants, hotel lobbies, etc., for work and storage rooms in which a certain humidity level must be maintained, for example in warehouses for fruit and vegetables, ^for passenger compartments, buses, railway carriages, etc.

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The attached drawings are described in more detail, but are not limited to them.

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^r ' g · 1 a humidification device^ in a vertical longitudinal section and
Fig. 2 shows an enlarged section of a perforated plate.

A humidification device according to the invention has a housing which consists of a lower part 1 formed by a tub, a middle part 3 forming a sprinkling zone 13 and an upper part '- ;u53i5!lC";;t â t . The water ² intended for humidifying the air is filled into the lower part 15t ■ j â 5 and the lower part 1 is closed with a removable cover 12 which

cO preferably also serves to hold the middle and upper parts 3, 4. A submersible pump 11 arranged in the lower part 1 conveys the water 2 via a connecting line 10 running axially through the middle part 3 to the upper part 4. Rollers 21 for moving the entire device, a casing (not shown) and an immersion heater 22 for heating the water if necessary can also be provided. The upper part 4 is separated from the middle part 3 by a perforated plate 5 which has a large number of through-holes 6 so that the water 2 flowing out of the upper part 4 through the perforated plate 5 is divided into a sequence of drops filling the cross-section of the middle part - the

similar to a heavy downpour through the middle part 3. The perforated plate 5 consists, according to Fig. 2, of a plate or disk in which the openings 6 are punched in such a way that downwardly bent tabs are created, which form guide surfaces 14 for the water drops. The air to be humidified is blown into the lower part 1 through an air inlet channel 7 by means of a fan 8 inserted into an opening in the cover 12, and there comes into contact with the water raining down through the middle part 3, whereby it is humidified and cleaned. The humidified air leaves the device via the air outlet channel 9 in the upper part 4, which is provided with a cover with openings.

The device can be provided with a control 20, shown schematically in Fig. 1, which measures the humidity in the area of the air inlet and switches the submersible pump 11 and the fan 8 depending on the measured humidity.

According to Fig. 1, the middle part 3 consists of a piece of pipe onto which a short piece of pipe with a large cross-section is ^placed as the upper part. This forms a support for the perforated plate 5 so that it only has to be inserted. It would also be conceivable to use a continuous piece of pipe of constant diameter in which the perforated plate 5 can be attached ^to any desired height near the upper edge 3. This ensures that the amount of water entering through the perforated plate 5 is reduced so that there is no excess pressure in the upper part 4 and the rain - like conditions in the sprinkling zone 13 are maintained.

The facility, which is only outlined in its essential components, can be disguised as desired so that it can be used as

piece of furniture, as a decorative item, etc. whereby the cladding can also be soundproof. If the water 2 is heated by means of the immersion heater 22, the escaping air can be heated, and in the transition period to heating, for example, the &eegr;&rgr;&eegr;

Since the air is cleaned at the same time as it is humidified, the device can also be used for warehouses, industrial premises, etc., whereby in the latter case it may also be possible to reduce an excessively high room temperature, since more humid air is perceived as warmer.

Claims (1)

Protection claim Device for humidifying air with a housing, which has an air inlet channel, in particular a fan, an air outlet channel, a lower part that can be filled with water, an upper part that serves as a water distributor, a connecting line provided with a circulation pump between the lower part and the upper part, and a middle part that is open into the lower part and has at least a preferably water spray zone is formed for the air flowing through the housing, in which the air humidity is increased and impurities are released into the water, the middle part being separated from the upper part by a perforated plate which is provided with a plurality of water passage openings, characterized in that the water passage openings (6) of the perforated plate (5) have guide surfaces (14) which project downwards and are created by the perforations.