ES2268607T3 - EVAPORATOR DEVICE FOR A VENTILATION CHANNEL. - Google Patents

Abstract

The evaporator (1) for the flow cross section of an air duct with the airflow holding water in droplet form. The evaporator has two oppositely arranged evaporator plates (2) angled to the airflow and spaced so that the overlapping areas do not contact. A flow space is thus defined between the plates, through which connectors between the plates extend. The connectors can be porous to be air permeable.

Description

Evaporator device for a channel ventilation.

The present invention relates to a evaporator device to cover a cross section of circulation of an air circulation channel, as defined in the preamble of independent claim 1.

Evaporator devices are used in especially in air humidification devices, which they have an air circulation channel, through which it circulates air in one direction of air circulation. To humidify the Air there are different possibilities. For example, you can use nozzles, which spray water to them supplied to the circulating air, the nozzles may be arranged both in the direction of air circulation and in against her. At the same time the water is torn to give place to aerosols, that is to say water drops capable of floating, the which pass in part to the gaseous state. Especially in channels of short air circulation the air cannot admit, however, aerosols fast enough so that they are dragged water droplets of different size by the stream of air. These can moisten the back of the device. which can lead to damage due to corrosion. To avoid this Corrosion damage type separation devices are mounted drops and / or subsequent evaporating devices, which remove water drops, if possible completely, from the air circulating.

This type of devices of different types They are part of the state of the art. In the document CH-A-673 519 is announced, by example, a device comprising an evaporator element back that completely covers the cross section of air circulation channel circulation made of a material with spongy type structure, such as ceramic. The water droplets dragged into the air stream are absorbed, when impacting on this type of evaporator elements posterior, by the sponge-like structure and are evaporated in Part for it. A disadvantage of this device is its great air resistance and power loss related to it. In order to compensate for this loss of power, you must use older air humidifiers with higher energy consumption.

In the document DE-C-100 35 881 describes a evaporator device which was developed for disposal of these disadvantages and that presents a lower air resistance. In this evaporator device at least two are arranged plates, which completely cover the cross section in each case of the current of the air circulation channel, made in hygroscopic material with open pore sponge structure, distanced from each other in the direction of air circulation. The at least two plates have in each case a number of through openings in the direction of air circulation, being the openings of a plate displaced with respect to the openings of an adjacent plate. Thanks to these openings, through the which circulates a part of the air, the loss of air flow pressure due to the device evaporator. On the back side of the plates can be plucked, however, drops of water by the current of air, which have been previously driven through through openings.

The document DE-U-201 18 140 unveils a evaporator device with several porous plate elements arranged over each other, which are rotatable mounted. The plate elements may take a position in which they are arranged inclined with respect to the direction of movement of the air and in such a way distances from each other that overlap without contact in a vertical overlap zone. It is disadvantageous that Each individual plate element is surrounded by a frame, the frames must ensure the evacuation of excess water to down.

In view of the disadvantages of the devices evaporators known so far, described above, the Invention the following problem arises. You have to create a evaporating device of the type mentioned at the beginning, which remove and evaporate water droplets from circulating air, and must be, for optimum evaporation power, the pressure loss of the lowest possible air flow. In addition, the device evaporator should be easily adaptable with advantage to different cross sections of channel circulation of air circulation.

This problem is solved, according to the invention, by a device like the one described in the independent claim 1. From the claims dependent advantageous variants of embodiment are derived from device according to the invention.

The essence of the invention consists in what next: An evaporator device covers a cross section of circulation of an air circulation channel, through which air circulates in the direction of air circulation, which Contains water in the form of droplets. Evaporating device has at least two porous evaporator plates, pore open, arranged over each other. These evaporator plates They are arranged inclined with respect to the direction of movement from the air and are distanced in such a way that overlap without contact in a vertical overlap zone. Horizontally contiguous with respect to evaporator plates mentioned are also arranged at least two plates of additional evaporator inclined with respect to the direction of air circulation, which also overlap without contact in a vertical overlapping zone and overlapping plates horizontally contiguous evaporator in each case without contact in a horizontal overlap zone.

The air that drives water droplets circulates in the evaporator device according to the invention, on the one hand through the evaporator plates, with which the water droplets they are retained by the evaporator plates and remain in it. This wastewater is then evaporated by the air that circulates through the evaporator plates or drains down.

Elsewhere the air flows ahead of said at least one evaporator plate overlap zone front by deviation. The inertia of water droplets guided in the air stream results in them being separated from the diverted air and to reach at least one evaporator plate rear in the overlapping zone, where they evaporate again or drain down.

By overlapping the plates of evaporator plate surface is increased, which leads to a evaporation power rise, without the loss of air flow pressure increase excessively.

The evaporator device according to the invention it allows to cover the cross section of the circulation of the air circulation and thereby remove and evaporate the droplets of water contained in the air stream of said air stream, without the evaporator device leading to pressure losses excessively large

Through vertical and horizontal overlap of the evaporator plates ensures that the water droplets plucked by the air current from one edge of a plate front evaporator in the overlap zone be intercepted by an adjacent rear evaporator plate.

In addition, a vertical and horizontal overlap of The evaporator plates make it easy to adapt the evaporator device to different cross sections of circulation of air circulation channels, thanks to the Size of overlapping areas can be varied depending on the needs.

It is preferably arranged in the area of overlapping of a top evaporator plate and a plate of lower evaporator the upper evaporator plate in the direction of air circulation before the lower evaporator plate. Water retained by evaporator plates, which is not evaporated in the air stream, it flows in a type arrangement tiles of this type of evaporator plates, due to the force of gravity and air flow in the evaporator plates, first towards its lower edges, it is torn from there and does impact on the overlap zone on the evaporator plates adjacent contours, so that no water droplets arrive some inside the area of the air circulation channel, behind the evaporator device. Such an arrangement also guarantees a sufficient deviation from the portion of air flow that is diverted.

Advantageously, the evaporator plates they are arranged in each case in the overlapping areas with their evaporator plates contiguous horizontally or in the direction of air circulation in front of all plates evaporator horizontally adjacent to these or in the direction of current flow behind all plates evaporator horizontally adjacent to these. A provision of this type guarantees, on the one hand, a sufficient deviation from the part of the air stream that is diverted and prevents, on the other hand, short circuits in which air flow can pass through without impediment the evaporator device.

In other variants of embodiments it is rotated the arrangement of the evaporator plates 90º or 180º around the direction of the air flow. These provisions represent alternatives to the described provision above, which may be advantageous for certain geometric conditions

Preferably, at least one of the evaporator plates is structured so that it narrows downwards, so that the section of the evaporator plate opposite the air stream decreases downwards. With this, the water retained by the evaporator plate, which is not evaporated in the air stream, can, better ordered, be accessed from an upper to lower evaporator plate. In particular, this water can be prevented from passing laterally in front of the evaporator plates
rear.

Advantageously it has at least one of the evaporator plates, at their upper and / or lower end, a air conducting element. This can continue by diverting the air flow, which does not pass through the evaporator plate, of so that the inertia of the water droplets acts even better.

Preferably, the evaporator device comprises vertically arranged support slats, in which the evaporator plates are plugged in, so that each evaporator plate is carried by two support slats. This type of support slats make possible a simple and flexible assembly of the evaporator device in situ .

In a variant embodiment preferred the evaporator device has a conductive element of laminar air to divert the air that comes out next to the plates evaporator more external towards the evaporator plates. With a Air conducting element of this type can be created in the area from the edge of the evaporator device, a circulation zone calm from which the air is conducted to the plates of evaporator.

Advantageously the evaporator device it comprises a collecting groove arranged below the lower evaporator plates and / or between evaporator plates. By means of a collector groove or collector grooves of this type can be collected water driven down by the evaporator plates, regardless of the structuring of the air circulation channel floor.

In a variant embodiment preferred exists between a top evaporator plate and a plate of lower evaporator one step through the evaporator device, which is covered at least one connecting element that connects The two evaporator plates.

Said at least one connection element seeks, on the basis of its air resistance that, in comparison  with a variant without connection element, the evaporator plate posterior is better circulated in the overlapping zone, since the air flow between the two evaporator plates arranged one on top of the other and the connection element is stagnant with which increases the air pressure.

Another advantage of said at least one element connection is that it conducts non-evaporated water from a top plate to the one located directly below. This has as consequence that the lower evaporator plate is humidified better and that water is not plucked from the top plate, or so minus a smaller amount of it, by the current of air.

Preferably said at least one element Connection is waterproof for water in the form of droplets. With this is ensured that, in any case, water droplets separated during the deviation of the air stream, they are captured by at least one connection element.

Advantageously, said at least one connecting element is air permeable, especially porous and open pore. This results in a part of the diverted air circulating through the at least one connecting element. This reduces the pressure loss of the entire
evaporator device

In a variant embodiment preferred said at least one connection element is more air permeable than evaporator plates. This can, be achieved, for example, thanks to the connection element It is formed thinner or endowed with more or larger pores. With that the loss of pressure of the air stream is achieved minor along the connection element.

In a variant embodiment alternative said at least one connection element is air impermeable The whole deviated air circulates then through the rear evaporator plate in the area of overlap, whereby it is circulated optimally.

In a variant embodiment preferred evaporator plates and the at least one element of Connection are made of a ceramic material. Plates suitable ceramics, which are part of the state of the technique, they aspirate a part of the water drops that come out and the they evaporate again in the circulating air.

Advantageously said at least one connecting element is placed only on the plates of corresponding evaporator or is immobilized between them. This makes quick assembly possible.

Preferably the evaporator device It has at least one driving element which is arranged, between an upper evaporator plate and an evaporator plate lower, laterally in one of the overlapping areas horizontal. These types of driving elements provide a better water evacuation from the upper evaporator plates to the lower ones in the horizontal overlapping areas.

The following explains in more detail the evaporating device according to the invention referring to the drawings of examples of embodiments attached, in the that

Fig. 1 shows a perspective view inclined from in front of an exemplary embodiment of a evaporating device according to the invention, in which they are not all elements represented;

Fig. 2 shows a front view of the evaporator device of Fig. 1 in a circulation channel of air;

Fig. 3 shows a perspective view of the evaporator device of Fig. 2 mounted on a channel of air circulation;

Fig. 4 shows a side view of a row of evaporator plates of the evaporator device in a air circulation channel of Fig. 3;

Fig. 5 shows a side view of a second exemplary embodiment of the arrangement of a row of evaporator plates in a circulation channel of air;

Fig. 6 shows a top view on a horizontal series of evaporator plates of the evaporator device in an air circulation channel of Fig. 3,

Fig. 7 shows a top view on a second exemplary embodiment of the arrangement of a horizontal series of evaporator plates in a circulation channel of air;

Fig. 8 shows a side view in detail of two adjacent evaporator plates of Fig. 4;

Fig. 9 shows a side view in detail of two evaporator plates of Fig. 5;

Fig. 10 shows a side view in detail of a second exemplary embodiment of plates of evaporator in the arrangement according to Fig. 8;

Fig. 11 shows a side view in detail of the evaporator plates of Fig. 10 in the arrangement according to Fig. 9;

Fig. 12 shows a side view in detail of an evaporator device arranged in a circulation channel of air with a first example of embodiment of an element upper air conductor;

Fig. 13 shows a side view in detail corresponding to Fig. 12 but with a second example of shape of realization of a superior air conducting element;

Fig. 14 shows a top view on a detail of the air evaporator device of Fig. 2 arranged in the air circulation channel with a first example of how to realization of a lateral air conducting element;

Fig. 15 shows a top view on a detail of an evaporator device arranged in the channel air circulation with a second exemplary embodiment of a lateral air conducting element;

Fig. 16 shows a side view in detail of the evaporator device of Fig. 2 arranged in the channel of air circulation with a first exemplary embodiment of a lower air conducting element;

Fig. 17 shows a side view in detail of an evaporator device arranged in a circulation channel of air with a second exemplary embodiment of a lower air conductive element;

Fig. 18 shows a side view in detail of an evaporator device arranged in a circulation channel of air with a third embodiment of an element lower air conductor;

Fig. 19 shows a perspective view tilted from behind an example embodiment of a evaporator device according to the invention with connection elements between evaporator plates arranged one above the other;

Fig. 20 shows a side view of a row of evaporator plates with connection elements in a air circulation channel;

Fig. 21 shows a side view of another exemplary embodiment of the arrangement of a row of evaporator plates with connecting elements in a channel air circulation;

Fig. 22 shows a side view in detail of two vertically adjoining evaporator plates with element of connection of Fig. 20;

Fig. 23 shows a side view in detail of two vertically adjoining evaporator plates with element of connection according to another exemplary embodiment; Y

Fig. 24 shows a perspective view tilted from behind a detail of an example of a form of embodiment of an evaporator device according to the invention with lateral driving elements between evaporator plates arranged over each other.

Fig. 1 and Fig. 2 show slats of support 3 and evaporator plates 2 of an example form embodiment of an evaporator device 1 according to the invention, in the which is further represented in Fig. 2 a channel of air circulation 5. Evaporator plates 2 are arranged in five rows 23 in the form of roof tiles, some on the others, and in nine horizontal 24 series. At the same time they are positioned slightly inclined in vertical direction and it 2 adjacent contiguous lower plates overlap their evaporator plates Overlap 21 vertical. The evaporator plates 2 are, essentially, parallelepipedic and are structures from a porous open pore material. On its side edges the plates of evaporator 2 have bevels 25 in the lower area, so that narrow down, that is, its width in the area lower is reduced down. Rows 23 of plates evaporator 2 are arranged, alternating with each other and ones behind others, in such a way that each evaporator plate 2 is parallel respect to its horizontal neighbor and protrudes from it in each case in a horizontal overlap zone 22. This overlap horizontal may vary depending on the circulation channel of air, which makes it possible to cover with evaporator plates standards 2 different widths of circulation channels of air.

On each side of each row 23 of air evaporator plates 2 a support strip 3 is provided in each case. Each support strip 3 has two parallel rows of slits 32, in which the evaporator plates 2 are plugged in, by example, by elastic seals. A row 23 of evaporator plates 2 is in each case plugged into the two rows of slits 32. In the two outer support rails 3 there is in each case only one row of slits 32 occupied with evaporator plates 2. Alternatively, the two outermost support slats can also be formed each with only one row of slits. The support slats 3 are folded round on their longitudinal sides 31 whereby, on the one hand, the bearing resistance of the support slats 3 is increased and, on the other hand, the air that impacts on the longitudinal sides 31 is deflected. , with the least possible pressure loss, towards the plates
evaporator 2.

For the whole of the description below it is The following statement is valid. If in a figure they are contained reference signs with the aim of achieving greater clarity of the drawing, but they are not mentioned in the descriptive text directly corresponding, then reference is made to its Explanation in descriptions of previous figures.

Fig. 3 shows the evaporator device 1 of Fig. 2, mounted on an air circulation channel 5, in a perspective view. The air circulation channel 5 has a rectangular cross section and comprises a cover 50, a 52 floor and two side walls 51. The evaporator device 1 is disposed in such a way in the air circulation channel 5 that each evaporator plate 2 covers its evaporator plate 2 in each case contiguous down, in the overlap zone 21 vertical, of the two evaporator plates 2, with respect to one air flow that appears on the evaporator device 1. Between the outermost support slats 3 and the walls 51 a lateral air diverter plate 40 is arranged in each case and, below the horizontal series 24 of the evaporator plates 2, a lower air diverter plate 41. Diverter plates side air 40 and lower air diverter plate 41 conduct the air stream that impacts the edge area of the evaporator device 1 smoothly and without loss of essential pressure on the evaporator plates 2.

During operation the current impacts of air, for example from the view side shown in Fig. 3, on the evaporator device 1 and partially crosses the evaporator plates 2. At the same time the droplets are retained of water transported in the air stream. Plates evaporator 2 with retained water are forced to circulate, by a side, by the next air stream, which leads to a partial evaporation, and, on the other, the excess water flows in the evaporator plates 2 towards their rear edges. From there it is started by the air flow and conducted, in each case, at 2 adjacent bottom evaporator plates. After series 24 bottom horizontal evaporator plates 2, the excess water is conducted at the lower end of the evaporator device 1 a water collecting tanks 6 arranged on the floor 52.

In Fig. 4 a row 23 of evaporator plates 2 in the air circulation channel 5. The air circulation device 7 of the circulation channel Air 5 is indicated symbolically by arrows. In this figure you can see that the evaporator plates 2 of a row 23 are arranged spaced apart from each other, so that the air that impacts on the evaporator device 1 can circulate, partially between the evaporator plates 2. With this you can keep the pressure drop induced by the device small evaporator 1 in the air circulation channel 5.

Fig. 5 shows a second example of the form of realization of an arrangement of a vertical row 230 of plates of evaporator 2 in the air circulation channel 5. The plates of evaporator 2 are at the same time rotated, compared to the row 23 shown in Fig. 4, 180 ° around the direction air circulation 7, so that the evaporator plates 2 they overlap in each case with the evaporator plate 2 adjacent to up in the direction of air circulation 7.

A series 24 is shown in Fig. 6 evaporator plate horizontal 2 of evaporator unit 1 of Fig. 3 in the air circulation channel 5. They are not shown the side air diverter plates 40. At the same time it you can see that the outer rows 23 of evaporator plates 2, which border on the walls 51 of the circulation channel of air 5, are plugged into slits 32 oriented in each case towards the air stream of the support strip 3 in each case more exterior and the second most exterior.

Fig. 7 shows a second example of the form of realization of an arrangement of a horizontal series 240 of evaporator plates 2 in the air circulation channel 5. The 40 side air diverter plates are not inclined, such as it happens in Fig. 6. The outermost rows 23 of plates evaporator 2, which adjoin the walls 51 of the canal air circulation 5, are plugged in each case in the row of slits 32 away from the support stream air stream 3 in each case outermost and the second outermost.

In Figs. 8 and 9 the mode is represented in that the air current flows through and circulates around two adjoining evaporator plates 2, arranged in a row 23 or 230. This happens, on the one hand, in the direction of crossing 71, in the which air stream passes through the porous pore material open the evaporator plates 2 and, on the other, in a circulation path around 72 or 720, in which the air flow circulates through evaporator plates 2. By diverting the air stream in the path of Circulation around 72 or 720, the water droplets are separated from the air current, since its inertia is too large as to be able to be diverted along with the air flow.

Figs. 10 and 11 show a second example of embodiment of evaporator plates 20, which are arranged in a row 23 or 230. Evaporator plates 20 they show at their ends an air conducting element in the form of an extension of air deflection 201, which is far from the Evaporator plate 20 contiguously vertically. Thanks to that, I know reinforces the deviation in the circulation path around 721 or 722, which leads to a better separation of water droplets With less inertia.

Fig. 12 shows an arrangement of a sheet upper air diverter 42 on an evaporator plate 2 of the top and cover 50 series of air circulation channel 5. The upper air diverter plate 42 is located very close to the upper evaporator plate 2 and to the cover 50, so that no air can circulate between the cover 50 and the plate of upper evaporator 2.

In Fig. 13 a second is represented exemplary embodiment of an upper air diverter plate 420.  The air diverter plate 420 is located again very close to the cover 50, although it is arranged distanced from the plate upper evaporator 2, so that it can circulate through air subjected to deviation between the upper evaporator plate 2 and the cover 50 of the air circulation channel 5.

Figs. 14 and 15 show two examples of embodiments of 40 or 400 air diverter plates lateral. Here a marginal area of the horizontal series 24 of shutter plates 2 of Fig. 6. The side air diverter plate 40 of Fig. 14 is located very next to the wall 51 of the air circulation channel 5 and the Support strip 3 closest. 400 air diverter plate side of Fig. 15, on the contrary, is arranged in such way that is very close to wall 51 and protrudes from a distance of the nearest support strip 3.

In Figs. 16 to 18 three are represented Examples of embodiments of deflection plates 41 or 410 or 411 lower. At the same time a part is shown in each case of a row 23 of evaporator plates 2, the floor 52 of the channel of air circulation 5 and the air diverter plate 41 or 410 or 411 bottom as well as collector grooves 8. Grooves manifolds 8 are connected with air diverter plates 41 or 410 or 411 lower and are arranged in each case in such a way that intercept and divert diverted water through the plate evaporator 2 lower. In Fig. 16 the air diverter plate 41 bottom ends below the evaporator plate 2 lower to the height of the front end of the collecting groove 8. Al same time a gap is found between the evaporator plate 2 lower and the air diverter plate 41 lower. In Fig. 17 protrudes the bottom air diverter plate 410 from the end bottom of the lower evaporator plate 2 and is arranged to distance from it, so that air can only circulate deflected between the lower evaporator plate 2 and the sheet air diverter 410. In Fig. 18 is finally located the 411 lower air diverter plate very close to the plate evaporator 2 lower, so that between evaporator plate 2 lower and the collector groove 8 cannot circulate air some, it simplifies the water outlet in the collecting groove 8.

Fig. 19 shows a second form example of carrying out an evaporator device according to the invention the which comprises three rows and five series of evaporator plates 2. In this embodiment, the steps to through the evaporator device 100, between two plates of evaporator 2 arranged one above the other, in each case by means of a connection element 9 permeable to air, connecting the two plates  of evaporator 2 or, alternatively, by two elements of air permeable connection 91 and 92 connecting the two plates of evaporator 2. The connection elements 9, 19, 92 are located between the support slats 3 on the evaporator plates 2. They are preferably locked between the evaporator plates 2.

Evaporator plates 2 of the upper series they are equipped in each case with an air diverter plate 42 upper, while on the support slats 3 external to both sides of the evaporator device 1 are arranged plates air diverters 40 (In Fig. 19 only one of the outermost 3 support slats with air deflector plate 40 lateral).

During operation the current impacts of air from behind on the evaporator device 100 and passes through,  partially, the evaporator plates 2. At the same time it retain water droplets transported in the air stream. Evaporator plates 2 with retained water are traversed, by one side, by the next air stream, which leads to a partial evaporation of water and, on the other hand, excess water flows down into evaporator plates 2. A part of the water flowing down flows through the connecting elements 9, 91, 92 in each case to the adjoining evaporator plates 2 lower. Another part of the water flows to the rear edges bottom of the evaporator plates 2 and is torn from there by the air flow and is conducted again in each case to the 2 adjacent bottom evaporator plates.

In Fig. 20 a row 23 of evaporator plates 2 in the air circulation channel 5. The direction of air circulation in the air circulation channel 5 is indicated symbolically by arrows 7. In this Figure you can see that the evaporator plates 2 of a row 23 distances are arranged in such a way that between two evaporator plates 2 arranged adjacent to each other there is in each case a passage through the evaporator device 100, which is covered by thin, permeable connection element 9 to the air, which connects the two evaporator plates 2. The air that impacts on the evaporator device 100 can thus partially circulate between evaporator plates 2 towards connection elements 9 and circulate through them. With it can keep the pressure drop small, which is induced by the evaporator device 100 in the air circulation channel 5.

Fig. 21 shows another example of embodiment of an arrangement of a vertical row 230 of plates evaporator 2 in the air circulation channel 5. The plates of evaporator 2 are at the same time, compared to row 23 shown in Fig. 20, rotated 180º around the direction of air circulation 7, so that in the overlapping zone of an upper evaporator plate 2 and an evaporator plate 2 lower the upper evaporator plate 2 is arranged, in the direction of air circulation 7, before the plate evaporator 2 lower. The connection elements 9 are located here on top of the in each case evaporator plate 2 lower and by back on the upper evaporator plate 2. They are preferably blocked between evaporator plates 2.

In Figs. 22 and 23 the way is represented in which the air flow crosses or circulates around two adjoining evaporator plates 2, arranged in a row 23 or 230. This happens, on the one hand, in a direction of crossed 71 in which the air stream passes through the material porous, open pore, evaporator plates 2 and, by another, on a circulation path around 73 or 730 in the which air stream circulates between evaporator plates 2 and through connection element 9 or 93 and finally in a Circulation path around and passing through 74 or 740, in which the air stream circulates around the plate evaporator 2 front and through evaporator plate 2 later. By diverting the air flow in the trajectories 73 and 74 or 730 and 740 separate the water droplets from the air current, since its inertia is too large as to be diverted along with the air flow. The element of connection 9 or 93 ensures that a part of the air circulating between the evaporator plates 2 be conducted through the plate evaporator 2 rear.

The connection element 9 further ensures that the part of the lower evaporator plate 2 that is in the overlap zone, you will be supplied with enough water with which increases the evaporation power.

The connecting element 93 is held, by example, with a clamp to the evaporator plates 2. Make sure that the water flowing down in the upper evaporator plate 2 be driven almost completely to the evaporator plate 2 lower.

In the embodiment shown in the Fig. 24 the evaporator device according to the invention shows between evaporator plates 2 arranged on top of each other, in rear row special, driving elements 99 arranged laterally in the horizontal overlapping zone. These conduction elements 99, formed bent in the present case, supports the action of narrowing of evaporator plates 2 using bezels 25 and take care of better heat removal from the upper evaporator plates 2 towards the lower.

In addition to evaporating devices according to the invention described above can be performed other constructive variations Here they are explicitly mentioned also:

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The Figs. 4 and 5 could also be top views on a series horizontal evaporator plates 2. Evaporator plates 2 would be arranged vertically then in correspondence with the horizontal series 24 shown in Figs. 6 and 7.

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In place below the lower evaporator plates 2, 20 or preferably in addition to them, a collector groove between two horizontal series of 24 plates evaporator. This can be advantageous especially when the plates evaporator lead a lot of water down.

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The air conductive plate 41, 410, 411 bottom can be equipped, in its lower part, with a rubber ear, which ensures a sealing with respect to the floor of the air circulation channel 52

Claims (17)

1. Evaporator device (1; 100) to cover a cross-sectional circulation of an air circulation channel (5), through which air circulates in a direction of air circulation (7), which contains water in the form of droplets, the evaporator device (1) presenting at least two open pore evaporator plates (2), arranged on top of each other, which are arranged inclined with respect to the direction of air circulation (7) and thus they are spaced apart in such a way that they overlap without contact in a vertical overlap zone (21), characterized in that horizontally contiguous with respect to the mentioned evaporator plates (2) are arranged at least two additional evaporator plates (2) inclined in relation to of the direction of air circulation (7), which also overlap without contact in a vertical overlapping area (21) and overlapping the evaporator plates (2) horizontally contiguous s in each case without contact in a horizontal overlap zone (22). 2. Evaporator device (1; 100) according to claim 1, characterized in that in the overlapping zone (21) of an upper evaporator plate (2; 20) and of a lower evaporator plate (2; 20) the arrangement being arranged upper evaporator plate (2; 20), in the direction of air circulation (7), in front of the lower evaporator plate (2; 20). 3. Evaporator device (1; 100) according to claim 1 or 2, characterized in that the evaporator plates (2; 20) are arranged, in each case in the horizontal overlapping areas (22), with their evaporator plates (2 ; 20) contiguous horizontally, or in the direction of air circulation (7) before all evaporator plates (2; 20) horizontally contiguous or, in the direction of air circulation (7), behind all these plates air evaporator (2; 20) horizontally
adjoining 4. Evaporator device (1; 100) according to claim 2 or 3, characterized in that the arrangement of the evaporator plates (2; 20) is rotated 90 ° or 180 ° around the direction of air circulation (7). 5. Evaporator device (1; 100) according to one of claims 1 to 4, characterized in that at least one of the evaporator plates (2; 20) is structured so as to narrow downward, so that the cross section of the evaporator plate (2; 20) opposite the air flow decreases downwards. 6. Evaporator device (1; 100) according to one of claims 1 to 5, characterized in that at least one of the evaporator plates (20) has an air conducting element (201) at its upper end and / or at its end lower. 7. Evaporator device (1; 100) according to one of claims 1 to 6, characterized in that it has support slats (3) arranged vertically, in which the evaporator plates (2; 20) are plugged, so that each Evaporator plate (2; 20) is supported by two support slats (3). 8. Evaporator device (1; 100) according to one of claims 1 to 7, characterized in that it comprises a conductive air element (40, 41, 42; 400; 410; 411; 420) laminar to divert the air that leaves next the outermost evaporator plates (2; 20) on the evaporator plates (2; 20). 9. Evaporator device (1; 100) according to one of claims 1 to 8, characterized in that it comprises a collecting groove (8) arranged below the lower evaporator plates (2; 20) and / or between evaporator plates (2 ; twenty). 10. Evaporator device (100) according to one of claims 1 to 9, characterized in that between a top evaporator plate (2) and a lower evaporator plate (2) there is a passage through the evaporator device (1) which is covered by at least one connection element (9, 91, 92; 93) that connects the two evaporator plates (2). 11. Evaporator device (100) according to claim 10, characterized in that said at least one connecting element (9, 91, 92; 93) is impervious to water in droplets. 12. Evaporator device (100) according to claim 10 or 11, characterized in that said at least one connecting element (9, 91, 92; 93) is air permeable, especially porous and open pore. 13. Evaporator device (100) according to one of claims 10 to 12, characterized in that said at least one connecting element (9, 91, 92; 93) is more permeable to air than the evaporator plates (2). 14. Evaporator device (100) according to claim 10 or 11, characterized in that said at least one connecting element is air tight. 15. Evaporator device (100) according to one of claims 10 to 14, characterized in that the evaporator plates (2) and said at least one connecting element (9, 91, 92; 93) are made of a ceramic material. 16. Evaporator device (100) according to one of claims 10 to 15, characterized in that said at least one connecting element (9, 91, 92) is disposed only on the corresponding evaporator plates (2) or is immobilized between these . 17. Evaporator device (1; 100) according to one of claims 1 to 16, characterized in that it has at least one conductive element (99) which is arranged laterally, between an upper evaporator plate (2) and an evaporator plate (2) lower, in one of the overlapping zones
horizontal (22).