DE29619486U1 - humidifier - Google Patents

Description

Description

The present invention relates to a humidifier
with the features specified in the preamble of claim 1.

Known humidifiers suck dust from the ground
air, moisten it and blow the moistened,
dusty air back into the room.

The high level of dust particles in the air released represents a significant burden for people suffering from allergies.

State-of-the-art air humidifiers also come into being, which also suck in air containing dust and microorganisms from near the ground, but pass it through a filter before expelling it.

Since there is a high humidity inside these humidifiers
and the temperature is always in the range of about 28 ⁰ C due to the use in heated rooms and the additional engine waste heat, the fleece-like filters of such humidifiers create optimal

Conditions for the uncontrolled proliferation of bacteria, viruses and other microorganisms. They represent
literally represents a "breeding lawn".

During operation, the bacteria are carried along by the air flow and thoroughly and finely distributed in the room air.

Such humidifiers are therefore extremely questionable for health reasons.

Due to the small evaporation surface of known humidifiers, sufficient humidification is often not guaranteed, especially in strongly heated rooms.

Due to the constant hum of the fan motor and the intake and turbulence noises caused by the flowing air, commercially available humidifiers often cause considerable noise pollution, especially if they are installed in the immediate vicinity of an otherwise quiet office workstation.

Difficulty concentrating, tension and discomfort are among the consequences of this noise pollution.

From an aesthetic point of view, the well-known humidifiers are also not appealing due to their functional housing.

The object of the present invention is therefore to provide a humidifier which does not have the problem of stirring up dust particles, bacteria, viruses and microorganisms and instead absorbs and binds them, is completely harmless to health, ensures sufficient air humidification even in strongly heated rooms, does not cause noise pollution and is aesthetically pleasing.

According to the invention, this object is achieved in a generic device by the features specified in the characterizing part of claim 1. Particularly preferred embodiments are the subject of the claims below.

Some embodiments of the invention are described in more detail with reference to the drawings.

Show it:

Figure 1 shows a schematic cross-section of an air humidifier according to the invention with an inclined, plate-shaped evaporation surface;

Figure 2 shows a schematic cross-section of an air humidifier according to the invention with a cube-shaped evaporation surface, on the top of which a trough-shaped depression is provided in which a spherical rotating body rests in a rotatable manner;

Figure 3 is a schematic, partially sectioned front view of a vertically aligned, plate-shaped evaporation surface with an integrated, serpentine-like pipe for conducting a heating and/or cooling medium;

Figure 4 shows a schematic cross-section of an air humidifier according to the invention with a pyramid-shaped evaporation surface from whose upper third a liquid filter emerges!

Figure 5 shows a schematic cross-section of an air humidifier according to the invention with essentially horizontally aligned and stepped evaporation surfaces,

Figure 6 is a schematic plan view of a humidifier according to the invention integrated into a table with a rotating body;
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Figure 7 shows a schematic cross-section of an air humidifier according to the invention, integrated into a table, with a rotating body;

Figure 8 is a schematic perspective view of a humidifier according to the invention integrated into a counter ;

Figure 9 is a schematic perspective view of an air humidifier according to the invention with tower-shaped evaporation surfaces;

Figure 10 is a schematic perspective view of a humidifier according to the invention constructed in the shape of a letter "A".

As already shown in Figure 1, an air humidifier according to the invention comprises at least one evaporation surface (1).

This has a front evaporation side {7) and an opposite, rear side (8).

As a rule, the evaporation of the liquid (3) takes place at the front on the evaporation side (7).

However, if a particularly large amount of moisture is to be released into the ambient air or the installation area of the humidifier is limited, liquid can of course also be evaporated on the back (8) of the evaporation surface (1). In this case, the maximum amount of moisture that can be released into the ambient air by the humidifier according to the invention is doubled.

The humidifier according to the invention also has at least one film generator (2). This serves to generate a liquid film (3) on the front evaporation side (7) and/or the rear side (8) of the evaporation surface opposite the evaporation side (7).

(1) .

A particularly important feature of the humidifier according to the invention is that the evaporation surface {1) can be heated.

The air humidifier according to the invention comprises at least one device (4) for heating the liquid film (3) and/or the evaporation surface (1) and/or at least the front evaporation side (7) and/or at least the rear side (8) of the evaporation surface (1).

The heating device (4) can be, for example, a warm air blower and/or a microwave heater and/or an infrared radiator and/or an electrical resistance wire heater and/or a body that radiates heat or releases heat by convection.

Mattress heaters, foil heaters with welded-in heating wires, radiators, tiled stoves or open fireplaces are among the bodies that can radiate heat or release heat through convection.

Of course, it is also possible to heat the evaporation surface (1) using focused or unfocused sunlight. The focusing of the sunlight can be achieved, for example, using lenses and/or mirrors.

Alternatively or additionally, the heating can be achieved by means of a substantially plate- or tubular piping system (6).

As shown in Figure 3, this is, for example, integrated into the evaporation surface (1) in a serpentine manner or attached to the back (8) of the evaporation surface (1).

For example, a gaseous and/or liquid heating medium (5) heated by solar technology, photovoltaics, geothermal energy or by an electrical or fired heating system can be passed through this plate- or tubular pipe system (6).

The heating device (4) can act both from the front on the front evaporation side (7) of the at least one evaporation surface (1) and from the rear on the rear side (S) of the evaporation surface (1).

If the heating device (4) - as shown in Figure 1 - is arranged between the front evaporation side (7) and the back (8), i.e. within the evaporation surface (1), it can act on the front evaporation side (7) and the back (8) at the same time.

Preferably, the heating device (4) is essentially designed in the form of a tube, a plate, a mat or a serpentine line, provided that it is provided within the evaporation surface (1).

To lock and/or attach the device (4) for heating to the front evaporation side (7) or to hold the front evaporation side (7) and the back side (8) together, a binding agent (19) can be used, which is, for example, a tile adhesive commonly used for underfloor heating.

In preferred embodiments, the humidifier according to the invention comprises a control device (9) for regulating the temperature of the evaporation surface (1) and/or the conveying speed of the pump (15) and/or the dosing device (16).

As a rule, at least the device (4) for heating is connected to a control device (9). For example, at least one probe {17} measuring the humidity of the ambient air and/or at least one temperature sensor (18) can be connected to the control device (9).

The temperature sensor (18) can, for example, measure the temperature of the liquid film (3) and/or the front evaporation side (7) and/or the back (7) of the evaporation surface (1) and/or the evaporation surface (1) and/or the ambient air.

Preferably, the control device (9) outputs a control value to the heating device (4) as a function of the measured values received via the humidity measuring probe and/or the temperature sensor and/or a manually entered setpoint value, which causes the evaporation surface (1) to heat up to preset temperatures and thus the release of a predetermined amount of liquid into the ambient air and/or the heating of the ambient air to a preset temperature.

If the humidifier according to the invention is used purely for humidification purposes in strongly heated rooms, the temperature of the front evaporation side (7) and/or the evaporation surface (1) and/or the rear side (8) of the evaporation surface (1) that comes into contact with the liquid film (3) can be selected to be at least somewhat higher than the temperature of the ambient air in order to increase the evaporation rate.

If, however, the air humidifier according to the invention is to be used primarily for refreshment, for example in tropical weather conditions, then instead of a heated heating medium, a cooled cooling medium can of course be guided, for example in the tubular or plate-shaped piping system (6) in the evaporation surface (1).

As can be seen in particular from Figures 1 and 5, an air humidifier according to the invention comprises at least one film generator (2).

This can, for example, be essentially tubular, trough-shaped or hip-shaped.

Particularly preferred are those film generators (2) whose shape corresponds to a substantially horizontally aligned channel, wherein the liquid film (3) runs over one or both long sides of the channel.

Also preferred are film generators (2) whose shape corresponds to a substantially vertically aligned tube, whereby the liquid film (3) in this case runs off the circular, upper outlet opening of the tube.

The filter generator can be filled from above, from the side or from below, for example via a liquid supply line (13). To avoid turbulence during filling, which would prevent even film formation, it is recommended to attach both

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for example cap-shaped deflection plates (22) against which the filling flow entering the film generator (2) is directed (see Figure 5).

As a rule, the film generator (2) has at least one film-forming overflow edge (10) or merges into one.

Preferably, this is provided at least partially and at least slightly above the evaporation surface (1).

The film-forming overflow edge (10) can, for example, be straight or at least partially curved and essentially horizontally aligned or at least slightly inclined to the side.

Preferably, the film-forming overflow edge (10) is connected to the evaporation side (7) and/or the rear side (8) of the evaporation surface (1) in a substantially gap-free manner.

The evaporation surface (1) can basically have any shape. Some examples of possible evaporation surface shapes are shown in Figures 1 to 6.
The wide range of possible shapes of the evaporation surface (1) includes, for example, essentially vertically or horizontally aligned or inclined plates, tubes, polyhedrons, cuboids, tetrahedrons, hexahedrons (cubes), octahedrons, pentagonal dodecahedrons, icosahedrons, straight or oblique prisms, pyramids, wedges or curved surfaces, cylinders, circular cylinders, obliquely truncated circular cylinders, straight or oblique cones,

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Spheres, paraboloids, ellipsoids or hyperboloids or a combination of one or more of these shapes.

Figures 1 to 6 show that straight-faced evaporation surface shapes are particularly preferred due to their ease of manufacture.

For example, Figure 1 shows a schematic cross-section of an air humidifier according to the invention with an inclined, plate-shaped evaporation surface (D ·

Figure 2 discloses a schematic cross-section of an air humidifier according to the invention with a substantially cube-shaped evaporation surface (1), on the upper side of which a trough-shaped depression is provided in which a spherical rotating body (12) rests rotatably on a liquid film (3).

Figure 4 shows a schematic cross-section of an air humidifier according to the invention with a pyramid-shaped evaporation surface from whose upper third a liquid film emerges.

It is of course possible to mount the pyramid tip on a central mandrel, for example, so that it can rotate. The liquid film (3) then eliminates the frictional forces between the bottom of the rotatably mounted pyramid tip and the top of the truncated pyramid in the sense of "aquaplaning". If part of the liquid (3) supplied through the essentially vertically aligned pipe (13) acts, for example, via a bulge in the preferably circular projection

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inlet cross-section of the pipe (13) hits the bottom of the pivoting pyramid tip at least slightly obliquely, then one observes a rotation of the pyramid tip as in the case of the rotating body (12). 5

Figure 5 shows a schematic cross-section of an air humidifier according to the invention with plate-shaped, essentially horizontally aligned and stepped evaporation surfaces.

Finally, Figure 6 shows a schematic top view of an air humidifier according to the invention with a rotating body integrated into a table top (23).

Figure 7 shows a schematic cross-section through such a table. If necessary, the temperature of the evaporation surface (1) can be increased to such an extent that it functions as a warming plate, at least temporarily. It is even conceivable that the evaporation surface (1) can be designed to rotate around the vertical axis.

Figure 8 shows a schematic perspective view of an air humidifier according to the invention integrated into a counter with a first, vertically aligned, column-shaped and a second, horizontally aligned, plate-shaped evaporation surface (1). The liquid film (3) initially runs along the vertically aligned, column-shaped evaporation surface

(1) in the form of a spirally wound band around the evaporation column and then flows, for example,

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in the horizontal, possibly deep slot in the horizontal counter top. Instead of a single slot, several essentially horizontally aligned slots for the liquid film can of course be provided in the counter top. If these slots are narrow enough, they do not interfere when placing a glass down. Illumination of the slots from above or illumination of the slots from below, for example through a transparent slotted bottom or through transparent slotted side walls, leads to a particularly appealing overall impression of the humidifier according to the invention.

The advantage of such a heated counter top is that there is no unpleasant feeling of cold when you place your hands or bare forearms on it. In comparison to an unpleasantly cold counter top, it increases the length of time guests spend at the counter and is therefore very popular with both guests and hosts. 20

Even the at least temporary use of the humidifier according to the invention as a hot plate for placing food on is conceivable.

The slots in the counter top, which is essentially horizontally aligned, for example, can be provided with a transparent cover to avoid the risk of contamination of the liquid film (3), which allows the escape of air humidity via hole-shaped recesses or micropores.

If the humidifier according to the invention is used in a horizontal orientation as a base plate, the above statements regarding the slots and the slot covers apply accordingly.
5

A vertically aligned, tower-shaped evaporation surface (X) is finally shown in Figure 9.

In particularly preferred embodiments, the evaporation surface (1) can be designed in the form of letters or numbers. Figure 10 shows a schematic perspective view of an air humidifier according to the invention constructed in the form of a letter "A". Such air humidifiers are particularly suitable for displaying company logos or name initials.

In principle, any material can be used to produce the evaporation surface (l), the film generator (2) and the collection container (14).

Preferably, the evaporation surface (1) and/or the front evaporation side (7) and/or the rear side

(8) the evaporation surface (1) is made of or consists of glass, plastic, wood, metal, ceramic, porcelain, natural stone, granite, marble, limestone, syenite, gneiss, conglomerate or cement-bound or synthetic resin-bound artificial stone or mixtures thereof.

From an aesthetic point of view, it may be advisable to combine several of these materials in the form of inlays. In this way, both

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for example, company logos, name initials or decorative ornaments can be impressively showcased.

The evaporation surface (1) and/or the front evaporation side (7) and/or the back (8) of the evaporation surface (1) can be smooth, ground, polished, rough, flat, corrugated, nubbed or provided with projections.

Of particular interest in this context is that the liquid film (3) adapts to moderately bulging projections and moderately sunken depressions without tearing due to the surface tension of water and adhesion or cohesion forces.

It is of course possible to provide one or more rotating bodies (12) on essentially horizontally aligned evaporation surfaces (1), which, due to an "aquaplaning" effect, can be set into an impressive rotating movement in an extremely simple manner by a water jet acting obliquely from below. Like the evaporation surface (1), the rotating body (12) can optionally be heated and thus represent an enlargement of the evaporation surface (1).

Since moving bodies attract the attention of the observer to a greater extent than resting bodies, such rotating bodies (12) are excellently suited as advertising media.

If the underside of the rotating body (12) is flat, then - analogous to the case of the rotating pyramid tip already described - it can simply be placed on a mandrel on the likewise flat, preferably essentially horizontally aligned area of the evaporation surface (1). Rotating bodies (12) with a flat underside are preferred according to the invention, since they can be manufactured with particularly little effort.

If, on the other hand, the underside of the rotating body (12) is curved - as, for example, in the case of a spherical rotating body (12) - then at least one essentially trough-shaped depression (11) for receiving at least one essentially spherical, paraboloid or ellipsoidal rotating body (12) can be provided on the upper side of the evaporation surface (1). The diameter and the radii of curvature of the trough-shaped depression (11) are in this case preferably essentially adapted to the dimensions of the part of the rotating body (12) lying in the trough-shaped depression (11).

In the case of a rotating body (12) with a curved underside, a liquid supply line (13) preferably opens with one or more jets essentially into the area of the lowest point of the trough-shaped depression (11).

The liquid supply line (13) releases the liquid there, as a rule, at least under such a pressure that the formation of a liquid film (3) sufficient for rotation of the rotating body (12)

The easy rotation of the rotating body (12) in the trough-shaped depression (11) is in this case essentially based on an "aquaplaning" effect. The pump (IS) does not have to apply a great deal of pressure to lift the possibly heavy rotating body (12). Instead, a pump output that corresponds to a fraction of the pump output required to completely lift the rotating body (12) is sufficient to form the aquaplaning liquid film (3).

Of course, it is possible to supply the liquid under a significantly higher pressure via the liquid supply line (13) to the outlet opening in the trough-shaped recess (11). In this case, the rotating body (12) can be completely lifted and "ride" on the liquid jet.

If necessary, the pressure of the pump (15) can pulsate, so that the rotating body (12) alternately rotates in the trough-shaped recess (11) and the fully raised rotating body (12) rides on the liquid jet.

The liquid supply line (13) preferably opens into the trough-shaped recess (11) with a cross-section that is essentially circular in plan view.

Of course, the cross-sectional area of the outlet opening can also have any other shape. For example, it can be oval or rectangular.

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In order to be able to impart a spin to the rotating body (12) located in the trough-shaped recess (11), the otherwise circular outlet cross-section may have a bulge in the top view. The liquid exiting obliquely from the liquid supply line (13) via the bulge of the outlet cross-section exerts a rotational force on the rotating body (12).

Alternatively or in addition to a bulge in the otherwise circular outlet cross-section, for example, a thinner-jet secondary liquid supply line can be provided, for example, next to the central main liquid supply line (13), inside and/or outside the trough-shaped depression (11). The longitudinal axis of the liquid jet released via the secondary liquid supply line preferably does not run parallel to the longitudinal axis of the jet released by the main liquid supply line (13), but rather at an angle to it. The effect of the liquid jet released via the secondary liquid supply line on the rotating body (12) causes the latter to rotate.

In preferred embodiments, the rotating body (12) can have at least one chamber sealed to the outside against the ingress of water. If necessary, the size of the chamber is selected so that it essentially fills the interior of the rotating body (12).

• ·«

I·

For example, a device for generating sounds and/or light can be arranged in this chamber.

The device for producing sounds can be, for example, a music box, a rattle, a glockenspiel or sounding, possibly fork-shaped metal rods that are set into vibration by striking rotating balls. The device for producing sounds can also be driven, for example, by a winding mechanism or a flywheel.

Of course, it is also possible to provide electrically operated devices for generating sounds in the chamber”

Examples of this are possibly miniaturized radio-like receivers and devices for playing data stored on data carriers such as chips, magnetic tapes, floppy disks and records. These devices can be connected to at least one loudspeaker arranged in the chamber or use the rotating body (12) itself as a membrane or resonance body.

Devices for generating light include, for example, differently colored light bulbs, neon lamps and, in particular, light-emitting diodes.

The supply of electrical energy to both the devices for generating sounds and the devices for generating light can, for example,

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via a flywheel-driven dynamo integrated into the rotating body (12), a dynamo provided with a winding mechanism, a battery or an accumulator.
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In a particularly preferred embodiment of the humidifier according to the invention with a luminous and/or sounding rotating body (12), a transmitter for emitting electromagnetic waves is preferably provided in the immediate vicinity of the rotating body (12), for example in the base that supports the humidifier and is optionally table-shaped or cuboid-shaped. The electromagnetic waves emitted by the transmitter are, for example, non-modulated. The transmitter can be a particularly inexpensive tunnel diode transmitter. The transmitter's transmission power is generally in the range of 0.01 to 10 watts.

In this case, a receiver for receiving the electromagnetic waves emitted by the transmitter is mounted in the rotating body (12). In particularly inexpensive to manufacture embodiments, this receiver has the form of a coil.

The receiver is connected to a device for converting the received electromagnetic waves into electricity.

The principle of inductive coupling is particularly suitable for supplying electrical equipment integrated into the rotating body (12) with electrical energy, since the surface of the rotating body (12) in this

• ft ♦ » ·· *·

Case does not have any intervention options that disturb the overall impression and the concentricity.

The liquid film (3) generally extends, with or without interruption, at least from the film-forming overflow edge (10) of the film generator (2) along the evaporation surface (1) to a downstream collecting container (14).

This essentially has the shape of a tub, a basin, a bucket or a gutter, for example. The collecting container (14) can be made of metal, glass, ceramic, porcelain, plastic, stone, wood or mixtures thereof, for example. It is of course possible to arrange the collecting container (14) above the ground or to at least partially submerge it in it. The collecting container preferably has a capacity that ensures operation of the humidifier for at least a predetermined period of time.

In particularly cost-effective embodiments, there are no inserts in the collecting container (14).

However, to increase the evaporation surface and to improve the overall impression, it is possible to provide essentially stone-like objects of different or the same size in the collecting container (14). If necessary, a multi-layer structure made of sand, peat, earth or stones can be selected. Planting the collecting container (14) is also an option.

In order to ensure that the pump (15) functions properly, in particular to ensure that it draws in fluid without hindrance, a substantially grid-shaped cage can be formed around the intake port of the pump (15), which is preferably located at the bottom of the collecting container (14).

However, to increase the amount of liquid that can be sucked in by the pump, the drainage area is preferably chosen to be significantly larger.

For this purpose, for example, a horizontally aligned grid that essentially lines up with the side walls of the collecting container (14) is introduced into the latter. The grid is at least somewhat spaced from the bottom of the collecting container (14), for example by support strips or a plurality of foot-like spacers.
The intake port of the pump (15) is located below the grille.

To prevent small solid particles from entering the intake chamber below the grid, a fine-pored mat can be placed on the top of the grid.

The collecting container (14) can be completely open at the top or closed off, for example, by stones or vegetation. Of course, it is possible to close off the collecting container (14) at the top with a cover (24). As shown in Figure 9, the cover (24) can be attached, for example, with the

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close off the side walls of the collecting container (14) and reach the evaporation surfaces (1) up to a distance which essentially corresponds to the thickness of the liquid film (3). To facilitate maintenance and cleaning work in the collecting container (14), the cover (24) is preferably designed to be removable.

The evaporated water can be refilled using a bucket or watering can, for example.

However, in particularly preferred embodiments, the collecting container (14) and/or the film generator (2) is equipped with an automatic liquid refill device.
The automatic refill device has, for example, a float that extends into the collecting container (14) or into the film generator (2) and is essentially constructed in the same way as a toilet cistern. Alternatively or additionally, a valve coupled to an optical, moisture-sensitive or temperature-sensitive sensor can fulfill the function of a liquid refill device.

The film generator (2) is supplied with the film-forming liquid, for example, via a connection of the film generator (2) to the public water network or to a higher or lower pressurized water reservoir, for example to a water or brine source.
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In particular, in terms of water conservation, it is alternatively or additionally possible to pump the liquid that has already been released from the higher film generator (2) in the form of a film (3) and collected in the lower collecting container (14) back from the lower collecting container (14) to the higher film generator (2) and/or to the higher film-forming overflow edge (10) using a pump (15). This pump (15) can, for example, operate in a constant flow and/or pulsating manner and have dry-run protection. The pump (15) can, for example, be a gear pump, piston pump or impeller pump.

The liquid for producing the liquid film (3) can be, for example, water, deionized water, brine or a liquid with a high water content.

As a rule, it does not contain any other additives.

However, it may be desirable to add additives to the liquid, such as essential oils, fragrances, smelling salts, minerals, salt, dyes, fluorescent or opalescent dyes, foaming agents, defoamers, glittering suspended particles, small metal foil particles and agents with antibacterial effects.

The addition of these additives can be done manually or via a 0 manually operated or automatic dosing device (16) for example in the film generator (2) and/or the

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collecting container (14) and/or the liquid supply line (13) and/or into the liquid film (3) itself. The addition is optionally controlled in terms of time and/or temperature and/or humidity.

All electrically operated devices of the humidifier according to the invention can be supplied with power from the mains, for example.

Alternatively or additionally, however, it is possible that the device (4) for heating and/or the pump (15) and/or the dosing device and/or the control device (9) and/or the transmitter are conductively connected to a photovoltaic system and/or a wind turbine for generating electrical current.

From a safety perspective, particularly preferred embodiments are those in which, for example, the device (4) for heating the evaporation surface (1) and the pump (15) are not operated with a current of 230 volts, but rather with a current of 12 or 24 volts.

The humidifier according to the invention is used in particular in heated rooms such as offices, waiting rooms, counter halls, schools, hospitals, sanatoriums, rehabilitation clinics, banks, restaurants, bars and government offices.

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Furthermore, the humidifier according to the invention can also be used in sauna cabins and steam baths. In these cases, care must be taken to ensure that the heating device (4) has sufficient heat output.

The method for humidifying the air on which the humidifier according to the invention is based has the special feature that a liquid film (3) is guided over a heatable evaporation surface (1).

In summary, it can be stated that the humidifier according to the invention with its falling liquid film (3) actually captures and binds dust particles, microorganisms and bacteria in the ambient air.

By adding antibacterial agents to the film fluid, bacteria bound in the film fluid can be destroyed particularly quickly, easily and effectively. Even through biological filtering through fine gravel and roots, pathogenic bacteria can be broken down and destroyed in an environmentally friendly way with the help of the microorganisms that naturally occur in the gravel and roots.

Since the liquid film {3) is not sprayed into the ambient air as in the case of commercially available humidifiers, the humidifier according to the invention poses no risk of infection and does not even pose a burden to allergy sufferers.

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Since the energy available to the device (4) for heating the evaporation surface (X) can be made available to a very high extent and even evaporation of the liquid film (3) on the front (7) and the back (8) of the evaporation surface (1) is possible, the humidifier according to the invention can always provide a sufficient amount of moisture to humidify large, strongly heated rooms,

If the pump (15) is operated in the collecting container (14) below the liquid level or encapsulated from the outside by the evaporation surfaces (1), noise pollution from the air dryer according to the invention is excluded.

The use of natural stone or other attractive materials to design the evaporation surface (1) ensures an aesthetically flawless overall impression of the humidifier according to the invention.

Claims (19)

Protection claims 1. Air humidifier with at least one evaporation surface (1) and at least one film generator (2) for generating a liquid film (3) on the front evaporation side (7) and/or the rear side (8) of the evaporation surface (1) opposite the evaporation side (7), characterized in that it comprises at least one device (4) for heating the liquid film (3) and/or the evaporation surface (1) and/or at least the front evaporation side (7) and/or at least the rear side (8) of the evaporation surface (1). 2. Device according to claim 1, characterized in that the device (4) for heating is a warm air blower and/or a microwave heater and/or an infrared radiator and/or a body that radiates heat or releases heat by convection and/or focused or unfocused sunlight and/or an electrical resistance wire heater and/or a substantially plate-shaped or tubular line system (6) for passing through at least the evaporation surface (1) of a gaseous and/or liquid heating medium (5) heated by solar technology, photovoltaics, geothermal energy or by an electrical or fired heating system. · ■ 3. Device according to one of claims 1 or 2, characterized in that the device (4) for heating acts from the front on the front evaporation side (7) of the at least one evaporation surface (1) and/or from the rear on the rear side (8) of the evaporation surface (1) and/or is provided within the evaporation surface (1) essentially in the form of a tube, a plate, a mat or a serpentine line.
10 4. Device according to one of the preceding claims, characterized in that the device (4) for heating is connected to a control device (9) to which at least one probe (17) measuring the humidity of the ambient air and/or at least one temperature sensor (18) are connected, which measures the temperature of the liquid film (3) and/or the front evaporation side (7) and/or the rear side (7) of the evaporation surface (1) and/or the evaporation surface (1) and/or the ambient air, the control device, depending on the measured values received via the humidity measuring probe and/or the temperature sensor 5 and/or a manually entered setpoint value, outputs a control value to the device (4) for heating, which controls the heating of the evaporation surface (1) to preset temperatures and thus the release of a predetermined amount of liquid into the ambient air. and/or causes the ambient air to be heated to a preset temperature. 5. Device according to one of the preceding claims, characterized in that the temperature of the front evaporation side (7) and/or the evaporation surface (1) coming into contact with the liquid film (3) and/or the rear side (8) of the evaporation surface (1) is at least somewhat higher in comparison to the temperature of the ambient air. 6. Device according to one of the preceding claims, characterized in that the film generator (2) is essentially tube-, channel- or trough-shaped and comprises at least one film-forming overflow edge (10) or merges into one, which is provided at least partially and at least somewhat above the evaporation surface (1), wherein the film-forming overflow edge (10) is straight or at least partially curved, essentially horizontally aligned or at least slightly inclined to the side and is connected to the evaporation side (7) and/or the rear side (8) of the evaporation surface (1) in an essentially gap-free manner. 7. Device according to one of the preceding claims, characterized in that the evaporation surface (1) has essentially the shape of a substantially vertically or horizontally aligned or inclined plate, a tube, polyhedron, cuboid, tetrahedron, hexahedron (cube), octahedron, pentagonal ciodecahedron, icosahedron, straight or oblique prism, pyramid, wedge or curvilinear surface, cylinder, circular cylinder, truncated circular cylinder, right or oblique cone, sphere, paraboloid, ellipsoid or hyperboloid, or a combination of one or more of these shapes. 8. Device according to one of the preceding claims, characterized in that the evaporation surface (1) and/or the front evaporation side (7) and/or the back (8) of the evaporation surface (1) contain or consist of glass, plastic, wood, metal, ceramic, porcelain, natural stone, granite, marble, limestone, syenite, gneiss, conglomerate or cement-bound or synthetic resin-bound artificial stone or mixtures thereof. 9. Device according to one of the preceding claims, characterized in that the evaporation surface (1) and/or the front evaporation side (7) and/or the back (8) of the evaporation surface (1) are smooth, ground, polished, rough, flat, corrugated, nubbed or provided with projections and/or depressions. 10. Device according to one of the preceding claims, characterized in that on the upper side of the evaporation surface (1) at least one essentially trough-shaped depression (11) for receiving at least a substantially spherical, paraboloidal or ellipsoidal rotating body (12) is provided, which can be heated or which cannot be heated, wherein the diameter and the radii of curvature of the trough-shaped depression (11) are substantially adapted to the dimensions of the part of the rotating body (12) lying in the trough-shaped depression (11). 11. Device according to claim 10, characterized in that a liquid supply line (13) opens out with one or more jets essentially in the area of the deepest point of the trough-shaped depression (11), the liquid supply line (13) delivering liquid at least under a pressure which causes the formation of a liquid film (3) sufficient for rotation of the rotary body (12). 12. Device according to one of claims 10 or 11, characterized in that the liquid supply line (13) opens into the trough-shaped depression (11) with a cross-section that is essentially circular in plan view and has a bulge in the circular outlet cross-section in plan view, wherein the liquid emerging obliquely from the liquid supply line (13) via the bulge in the outlet cross-section exerts a rotational force on the rotating body (12). 13. Device according to one of the preceding claims, characterized in that the rotary body (12) has at least one chamber sealed against the ingress of water, in which a device for generating sounds and/or light is arranged, the device for generating sounds and/or light being supplied with electrical energy via a battery or an accumulator and/or through the interaction of a transmitter of electromagnetic waves and a receiver provided in the rotary body (12) for receiving these electromagnetic waves, the receiver being connected to a device for converting the received electromagnetic waves into electricity and the transmitter being provided in the region of the rear side (8) of the evaporation surface (1) or in the immediate vicinity of the rotary body (12). 14. Device according to one of the preceding claims, characterized in that the liquid film (3) extends with or without interruption at least from the film-forming overflow edge (10) of the film generator (2) along the evaporation surface (1) to a downstream collecting container (14) which essentially has the shape of a tub, a basin, a bucket or a channel and consists essentially of metal, glass, ceramic, porcelain, plastic, stone, wood or mixtures thereof, wherein the collecting container (14) is arranged above the substrate or is at least partially sunk into it, has a capacity which enables operation of the humidifier for a predetermined period of time and does not contain any inserts or essentially stone-like objects of different or the same size and/or an essentially sieve-shaped grid at least slightly spaced from the bottom of the collecting container (14), below which the intake port of the pump (15) is provided and/or includes or does not include a device for automatically refilling the evaporated liquid. 10 15. Device according to one of the preceding claims, characterized in that the liquid is transported from the lower collecting container (14) to the higher film generator (2) and/or the film-forming overflow edge (10) by means of a pump (15), with or without dry-run protection, in a constant flow or pulsating manner, or is supplied to the higher film generator (2) by the pressure of the public water network or 0 a source. 16. Device according to one of the preceding claims, characterized in that the liquid for producing the liquid film (3) is water, deionized water, brine or a liquid with a high water content, wherein the liquid contains no additives or contains as additives essential oils, fragrances, odorous salts, minerals, salt, dyes, fluorescent or opalescent dyes, Contains foaming agents, defoamers, glittering suspended particles, small metal foil particles or agents with antibacterial effects. 17. Device according to one of the preceding claims, characterized in that it comprises a dosing device (16) for the time- and/or temperature- and/or humidity-dependent controlled addition of the additives to the film-forming liquid. 18. Device according to one of the preceding claims, characterized in that the liquid film (3) is narrow and essentially band-shaped. 19. Device according to one of the preceding claims, characterized in that the device (4) for heating and/or the pump (15) and/or the metering device and/or the control device (9) and/or the transmitter are conductively connected to a photovoltaic system and/or a wind power plant for generating electrical current.