DE3311063A1 - Fine-filtering compact integrated washer as integral component of an air-conditioning installation - Google Patents

Abstract

The invention relates to a compact partial air- conditioning appliance with an integrated wet-filter stage as a humidifying filter to prepare hygienic conditioned air. Dust particles, germs or gaseous pollutants can be simultaneously removed from the respiratory air with the aid of additives. An integrated washer with greatly reduced water/air ratio, for maintaining a given conditioned air state, results from the additional use of cold or heat in the washing water.

Description

DELBAG-LUFTFILTER GmbH OO A Λ Π C Q

Holzhauser Strasse 159 £ OO I IUOO

1000 Berlin 27

Fine-filtering combi / ashtray in compact design as an integral part an air conditioner

The invention relates to an air conditioner with an integrated wet filter stage as an air washer, at the same time as a climate conditioning Apparatus and used as a separator for water droplets, dust particles and gaseous substances for air treatment in the hygienic sense will.

The current state of air conditioning technology is only assumed known air conditioning combinations with conventional nozzle chamber air or spray humidifiers, which at least during the mass transfer should take on three functions. In the first place, however, were the degree of humidification of the air is regulated and the cooling effect mechanisms are set in motion by the evaporative cooling. This resulted in Due to the washing effect, however, at the same time, as it were, a filtering of the dusty air with moderate demands through mere contact between air and water. Those with a corresponding rain density sprinkled through gradient water or washing nozzles, at the same time as coolers, droplet separators and partly effective as a coarse filter for evaporation

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more humid are in some well-known differently designed components and variations have heretofore been made and used.

The majority of these devices had hitherto been targeted by their Overall effect only a low efficiency, especially when filtering dust, sometimes in a normal nozzle chamber air humidifier an air-conditioning system, the process of washing dust out of the air through the mere spray contact when water droplets collide and dust particles were in no case sufficient to completely save a coarse and fine filter stage. Either If the wetting surfaces of the water atomization or the interfacial tension of the fluid were not sufficient to deal with the necessary Concentration difference to carry out a sufficient and thus more effective mass transfer for these purposes.

The invention has set itself the goal with the help of a In co-current or counter-current working, super-fine spraying nozzle grille and a directly downstream, specially designed Fine fiber fleece filter made of glass fibers, textile or metallic material to form a compact combination washer. This Combination scrubbers should have a high degree of cooling, evaporation and humidification as well as a high degree of droplet separation and degree of dedusting for dust particles in the fine filter area

have the compulsory coarse and fine filter arrangements to replace it in the air conditioning units. It should also be possible to use gases such as SO2 or Cu "2 or other similar harmful or To eliminate odorous substances or germs and bacteria from the air flow of air conditioning units. If necessary, this also happens with the help of disinfectants, detergent additives or water relaxants as a wetting aid or it is additionally used to increase the filter quality by arranging an electrostatic Charging zone in front of the combi washer in the direction of the air flow created a further possibility to achieve better efficiency achieve. For disinfection purposes, there is also the option of using UV lamps in front of the nozzle washer to cover the washing nozzles and filter surfaces influence by their radiation intensity.

The invention is first achieved in that in a channel piece with the aid of a washing nozzle grille arranged in it, the nozzles of which have spiral or square full cone spray characteristics have, pro square or polygonal - if necessary also round - Individual filter inflow always a single washing nozzle directly in front of a glass fiber, textile or metallic one, for example fine-fiber, zigzag-shaped pocket filter with water catchment and drainage channel regardless of the number of filters is provided, which for itself either in cocurrent or in countercurrent to the air flow direction in front of each filter unit

generate intense water aerosol zones of high density, for example up to 30,000 and more particles per cnr of water, where the respective wetted pocket filter element in its constructive Design and function with vertically arranged folds and a fiber thickness with smaller fiber spaces than the water droplets, at the same time as an evaporative cooler, spray or steam humidifier, drop eliminator and finally designed as a wetted coarse or fine dust filter and thus as an integral part of an air conditioning system in a short design is.

Another example of the invention is that the possibly also with the help of disinfectants or detergent additives wetted individual coarse or fine filter stages per filter unit have at least 10 to 12 or more filter bags, each 150 to 900 mm in length, on which front, rear or underside inclined devices to catch and discharge the draining Washing liquid are arranged, while there is another one connected to it directly below the nozzle grille for this purpose Collecting and collecting basin for the washing liquid is located, with a continuously working circuit water purifier and Dirt separator or an osmosis treatment including the pumps is in connection.

The invention is also characterized in that the fan either before the washing process or after the pressure side wetted filter stage is arranged as a suction fan directly or indirectly in or on the air flow channel, the fan either a single or multi-stage axial fan or a radial fan, which can be used as a pressure fan with a preheater as required Defroster is coupled and at the same time designed as a coarse dust extractor or as a suction fan with a directly upstream Water droplet separator is equipped.

Another feature of the invention is that that too wetting pocket filter element optionally made of fiberglass or textile Fiber wadding or other fine plastic fiber layers or metallic, corrosion-protected fiber materials that antibacterial, anti-algae, termite-resistant, statically chargeable, UV-radiation resistant, designed to be water-repellent and rot-resistant or equipped to withstand the effects of water and in connection with normal or relaxed washing liquids due to their mixed multifilament or monofilament fine fiber structure and fiber density Dust or odorous substances or gases mixed with finely atomized liquids have the ability to achieve a high degree of air purity, For which this special filter stage is either a coarse filter or a fine filter or a combination of a two-stage or multi-stage interconnected Is coarse or fine and ultra-fine filtering.

Finally, the invention is characterized in that the Kambiwäscher optionally a UV radiation source as a sterilizer or an electrostatic charging zone with a high ion density is provided, while a drip container on the outside of the device is used for the wet zone is provided from the ongoing algae growth prevention fluid or water relaxer or disinfectant or decalcifying agent be dispensed in doses into the washing water or that the washing water itself is pre-cooled or for air conditioning purposes is preheated.

As a final embodiment of the invention, the pocket filter elements are positioned one above the other in the direction of the air flow are inclined slightly forward and rest on drip trays with a regular lay at the front, where they may be The liquid still flows out of holes on three sides, while in this version the nozzle grille works simultaneously with direct current and Countercurrent nozzles are arranged.

The individual exemplary embodiments are shown in FIGS. 1 to 4 and are described as follows:

Figure 1 is a complete combination washer with direct current nozzles and all possible variations to increase the efficiency by means of one or two-stage filter cells.

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Figure 2 shows the same combi washer, but with countercurrent nozzles and bag-like pocket filters.

Figure 3 is a representation with simultaneously operating direct current and counter-current nozzles and inclined filter cells that stand on inclined drip trays to accelerate the water drainage.

Figure 4 is a perspective drawing of the inclined Filter cell.

The representation of FIG. 1 here means that in a duct section 1 initially a nozzle grille 2, possibly supplied with temperature-controlled washing water, is arranged, the spiral or full cone nozzles 3 of which, respectively always spray the inflow surface 4 of a filter unit 5 in the air flow direction 9 with the washing water with a washing nozzle, the single-stage or two-stage filter layer 5 and 19 made of glass fiber, textile elastomeric or metallic fine fibers, which are in the layer are designed zigzag. Below these pocket filter units 5 beveled 11 water collection and drainage channels 6 are provided, which the drainage water 12 from the spray 7 in a collecting basin 13 lead that in a closed circuit with a water purifier, a sludge separator or an osmosis treatment 14 over the pumps 23 is connected. The fans 15 and 16 are arranged either on the pressure side 15 or after the wetted filter stage

as a suction fan 16, which is indirectly or directly in or on the air flow channel 1 is mounted. As a pressure fan 15, this is optionally coupled together with an upstream heater as a defroster 17 or provided as a suction fan 16 with an upstream droplet separator 18. In addition, the Dust air 9 an ionization stage 21 are arranged to by electrostatic Charging the air purity to give even better quality. In addition, by attaching a UV radiation source 20 is still an additional sterility can be achieved. A dosing device attached to the outside of the channel 2, for example in the form of a drip container 22, is able to use the wash water circulation system according to the drip principle to constantly supply necessary additives in the wet zone 10. This is done for reasons of desalination, decalcification, disinfection or for Change the surface tension of the washing water or to prevent it of algae.

In principle, FIG. 2 shows the same humidifier 1 as in FIG only with the difference that the washing nozzles 8 work in countercurrent to the air direction 9, while the filter layers of the bag-like bag filter 5 wetted with the finely atomized rain curtain from the countercurrent nozzles 8 with the wedge seam distance from the air inlet surfaces 4 will. The drainage channels 6 are according to the filter design held a little longer and pour the return water into the collecting or Collecting basin 13 back again.

In FIG. 3 it is shown that viewed in the direction of air flow 25 when the filter units 24 are inclined to the front, only drip trays 28 provided with bevels 27 upwards and downwards for the Water drainage are required. A corresponding regular lay creates the necessary three-sided water drainage options on these drip tray, which can still be supplemented by holes in the slipstream. This situation is not difficult in the illustration according to FIG to recognize.

The advantage of this invention is that the dew point state of the supply air ^{can be kept constant all year round (e.g. at 12 °} C. and 90 to 100 ° C. relative humidity). The supply air is hygienically humidified and at the same time finely cleaned by the wetted filter, which saves several filter stages in the air conditioning system. Sorptive gases, e.g. B. SQ2, can be washed relatively well in this way. Compared to conventional nozzle chamber air humidifiers, this design works with lower water-air ratios. Wet filters have a longer service life than dry filter stages. The central overall length is only about a third of that of a conventional nozzle chamber humidifier. The lower pressure of a single filter stage or a two-stage filter compared to multi-stage filtering in air conditioning systems saves ventilators, energy and equipment. Better air conditioning can be carried out by controlling the temperature of the scrubber liquid.

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Claims (6)

PROTECTION CLAIMS 1.) Air conditioner with integrated wet filter stage as air washer and Climate conditioning separator for water droplets, dust particles and gaseous substances characterized by that in a channel piece (1) with the aid of a washing nozzle grille (2) arranged therein, the nozzles (3) of which are spiral-shaped or square Have full cone spray characteristics per square or polygonal - if necessary also round - individual filter face (4) Always a single washing nozzle directly in front of a glass fiber, textile or metallic one, for example fine-fiber zigzag-shaped pocket filter (5) with water catchment and drainage channel (6) regardless of the number of filters is provided, which for itself either in cocurrent (7) or in countercurrent (8) to the air flow direction (9) in front of each Filter unit each generate intense water aerosol zones (10) of high density, for example up to 30,000 and more particles each cm- ^ water, whereby the respective wetted pocket filter element (5) in its structural design and function with vertically arranged folds and a fiber density, the interstices between the fibers smaller than the water droplets, at the same time as evaporation - 11 - cooler, spray or steam humidifier, drop eliminator and finally as a wetted coarse or fine dust filter and thus as an integral part of an air conditioning system in Short construction is formed. 2. Air conditioner with integrated wet filter stage according to claim 1, characterized in that the possibly individual coarse or fine filter stages each wetted with the aid of disinfectants or detergent additives Filter unit have at least 10 to 12 or more filter pockets - depending on requirements - each 150 to 900 mm in length those front or rear or underside inclined devices (11) for collecting and discharging the draining Washing liquid (12) are arranged, while there is another one directly below the nozzle grille (2) for this purpose connected collecting and collecting basin (13) for the washing liquid (12) is located, with a continuous working circuit water purifier and sludge separator or an osmosis treatment (14) including the pumps (23) is in connection. - 12 - 3. Air conditioner with integrated wet filter stage according to claim 1 and 2 characterized in that the fan (15) either on the pressure side or before the washing process is arranged after the wetted filter stage as a suction fan (16) directly or indirectly in or on the air flow channel (1), wherein the fan (15 and 16) is either a single or multi-stage axial fan or a radial fan that can be used as required is coupled as a pressure fan with a preheater (17) as a defroster and at the same time designed as a coarse dust extractor or is equipped as a suction fan (16) with a directly upstream water droplet separator (18). 4. Air conditioner with integrated wet filter stage according to claim 1 to 3 characterized in that the pocket filter element (5) to be wetted is optionally made of glass fibers or textile Consists of fiber wadding or other fine plastic fiber layers or metallic, corrosion-protected fiber materials, which are antibacterial, anti-algae, termite-proof, statically chargeable, UV-radiation-proof, water-repellent and rot-proof or are permanently equipped to protect against the effects of water and in connection with normal or relaxed washing liquids (12) due to their mixed multifilament or monofilament fine fiber structure and fiber density dust or odorous substances or gases - 13 - mixed with finely atomized liquids have the ability to achieve high levels of air purity, including this special filter stage (5) either a coarse filter or a fine filter or the combination of a two-stage or multi-stage interconnected coarse or fine and ultra-fine filters (19). 5. Air conditioner with integrated wet filter stage according to claim 1 to 4 characterized in that the combi washer optionally a UV radiation source (20) as a sterilizer or a electrostatic charging zone with high ion density is provided, while a drip container (22) on the outside of the device for the wet zone is provided from the ongoing algae growth prevention fluid or water relaxer or disinfectant or decalcifying agent be dispensed in doses into the washing water (12) or that the washing water itself is pre-cooled for air conditioning purposes or heated. 6. Air conditioner with integrated wet filter stage according to claim 1 to 5, characterized in that the pocket filter elements (24) to the air flow direction (25) are slightly inclined forward and rest on with regular lay (26) provided with beveled front (27) drip trays (28) , where the liquid may flow from holes (29) on three sides, while in this version on the nozzle grille (30) there are simultaneous co-current (31) and counter-current nozzles (32).