WO1999001669A1 - Appareil de conditionnement d'air - Google Patents

Appareil de conditionnement d'air Download PDF

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Publication number
WO1999001669A1
WO1999001669A1 PCT/NL1998/000378 NL9800378W WO9901669A1 WO 1999001669 A1 WO1999001669 A1 WO 1999001669A1 NL 9800378 W NL9800378 W NL 9800378W WO 9901669 A1 WO9901669 A1 WO 9901669A1
Authority
WO
WIPO (PCT)
Prior art keywords
humidifying
elements
air flow
air
discs
Prior art date
Application number
PCT/NL1998/000378
Other languages
English (en)
Dutch (nl)
Inventor
Guennadi Anatolievich Nesterov
Original Assignee
Inalfa Industries B.V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Inalfa Industries B.V. filed Critical Inalfa Industries B.V.
Priority to EP98932618A priority Critical patent/EP0993555B1/fr
Priority to AU82455/98A priority patent/AU8245598A/en
Priority to DE69821484T priority patent/DE69821484T2/de
Publication of WO1999001669A1 publication Critical patent/WO1999001669A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F24F6/12—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air
    • F24F6/16—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air using rotating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F04D17/161—Shear force pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D31/00—Pumping liquids and elastic fluids at the same time
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F24F6/02—Air-humidification, e.g. cooling by humidification by evaporation of water in the air
    • F24F6/06—Air-humidification, e.g. cooling by humidification by evaporation of water in the air using moving unheated wet elements

Definitions

  • the present invention relates to an apparatus in accordance with the preamble of claim 1.
  • Such an apparatus is for example used as an apparatus for humidifying, cleaning and/or cooling air, and so far applications in homes or offices as well as industrial applications have become known. Examples of such apparatus can be found in DE-A-1 778 268, EP-A-0 118 811 and DE-A-32 43 080. With these apparatus, air is carried from the fan to the humidifying means, which may for example be parallel discs.
  • the fan and the humidifying means may each comprise their own drive unit, but it has also been proposed to use the fan drive unit for the humidifying means as well, for example via friction wheels (EP-A-0 118 811) or by fitting the humidifying means with an impeller wheel, which can be driven by an external air flow (DE-A-1 778 268) .
  • the object of the invention is to provide an apparatus of the kind referred to in the introduction, wherein the drawbacks mentioned have been eliminated in an effective manner.
  • the apparatus according to the invention is characterized by the aspects as stated in the characterizing portion of claim 1.
  • Advantageous embodiments of the invention are the subject matter of the subclaims. Since the fan and the humidifying means are combined by overlapping each other and/or by being incorporated into each other to form one unit, and since they are disposed concentrically, for example, it is possible to realise a very compact arrangement which preferably comprises only one shaft, so that the apparatus can be made considerably smaller than the known apparatus, which comprise separately fitted humidifying elements and air flow elements. Since the humidifying means and the air flow elements may consist of separate parts and are capable of rotating independently of each other, however, they can each be given the desired properties, so that a properly functioning apparatus of small dimensions can be obtained.
  • the at least approximately concentric or coaxial arrangement of the air flow elements and the humidifying means furthermore makes it possible to arrange for the humidifying means to be driven by the air flow elements if the humidifying means are disposed near and within the sphere of action of the air flow elements.
  • Another major additional advantage of this embodiment besides its compact construction is the fact that a separate drive unit for the humidifying means or a transmission between the fan and the humidifying means are not required.
  • the humidifying means can be driven by the air flow generated by the air flow elements, whereby the air flow elements and the humidifying means are preferably constructed in such a manner that said drive takes place almost automatically, without any additional parts being required.
  • a embodiment which is advantageous from the viewpoint of flow is one wherein the air flow elements are disposed internally of the annular humidifying means.
  • An advantageous embodiment is one wherein the air flow elements are substantially parallel discs which are mounted on a shaft, whilst the humidifying means may be substantially parallel annular discs. This embodiment provides an apparatus which exhibits a relatively low energy consumption, a very low noise level and an efficient operation.
  • Fig. 1 is a vertical sectional view of the apparatus according to the invention.
  • Fig. 2 is a sectional view along line II-II in Fig.
  • the drawing shows an embodiment of an apparatus for conditioning air, which could be used as an independent unit, for example for cleaning and humidifying air in a space such as a room, a cabin or the like, so as to enhance the level of comfort therein.
  • the apparatus into a larger plant, for example into an air conditioning plant which operates according to the absorption or adsorption principle, wherein dry, relatively hot air is to be cooled and humidified by causing water to evaporate therein.
  • Such an air conditioning plant could be used in means of transport such as trucks, caravans and passenger cars, and in particular in the latter case it is highly important that a silent and small apparatus exhibiting a low energy consumption is provided.
  • the apparatus comprises a casing 1, which is closed but for an air inlet 2 and an air outlet 3.
  • An air flow channel 4 extends from air inlet 2 to air outlet 3 , which air flow channel is bounded laterally by side walls 5 of the casing, by a boundary wall 6 on the upper side and by partitions or plates 7 bounding the upper side of a water bath in casing 1 on the bottom side.
  • Said water bath 8 contains the water which is to be absorbed as water vapour by the air flow through the air flow channel.
  • a horizontal shaft 9 Disposed in the air flow channel 4 is a horizontal shaft 9, which is rotatably supported in the casing at its ends by means of bearings 10.
  • a drive unit such as an electric motor or the like, engages said shaft 9 so as to rotate it .
  • shaft 9 is made at least partially hollow, and an electric driving motor 11 is mounted within said hollow shaft 9.
  • a number of discs 12, which function as air flow elements, are fixedly mounted on shaft 9 in parallel and preferably evenly spaced relationship.
  • Said discs 12, which must be designed to have a minimum weight and which may for example be made from a plastic, such as PVC, polyethylene, polypropylene and the like, or from aluminium, paper, etc., function to generate an air flow through the air flow channel 4 from inlet 2 to outlet 3.
  • shaft 9 is rotated in such a direction that the discs present in the area adjacent to the water in water bath 8 move from inlet 2 to outlet 3.
  • the discs 12 are preferably designed to have a minimum thickness, and their surface is preferably smooth in order to obtain a low noise level .
  • annular discs 13 mounted on shaft 9, concentrically with discs 12, are furthermore annular discs 13 operating as humidifying means, which discs 13 are kept in fixed spaced-apart relationship by means of cross pins 14, and which are supported in bearings with respect to casing 1 and shaft 9 via outer connecting elements 15.
  • Annular discs 13 can rotate freely with respect to shaft 9, therefore.
  • the annular discs 13 may for example be supported in bearings on a fixed shaft 16 via connecting elements 15, which fixed shaft 16 functions to support the electric motor and which extends through the hollow shaft 9. It will be understood that various other constructions are also conceivable.
  • the internal diameter of the annular discs 13 is such that said discs surround fan discs 12 with a small clearance of for example 1 - 2 mm, whilst the water level in the water bath is such that the annular discs 13 are completely submerged in the water at their lowest point and can be wetted over their entire surface area, therefore, so that the annular discs 13 can function as humidifying means .
  • the annular discs 13 do not comprise their own drive unit, they are driven by the air flow which is generated by the discs 12. This effect is achieved in that both the incoming air and the outgoing air flow along the annular discs 13 at an angle with the radial, whereby the circumferential components have the same direction of rotation, so that discs 13 are rotated by said circumferential components of the air flow.
  • the rotational speed of the humidifying discs 13 may be substantially lower than that of fan discs 12, for example 30 - 90 rpm for the humidifying discs 13 versus 2000 - 4000 rpm of the fan discs 12.
  • the rotational speed imparted to discs 13 depends on a number of factors, but in principle it is possible to control said speed by having a controllable brake engaging discs 13 so as to vary the counterpressure if this should be necessary in order to obtain a higher or a lower speed of discs 13 relative to discs 12, for example in order to control the relative air humidity or to adapt the amount of air flowing through.
  • the distribution of discs 12 per unit length is preferably different from that of discs 13, whereby it is preferred to provide more discs 13 per unit length than discs 12. Measurements have shown that a ratio of two to four, preferably three, discs 13 for each disc 12 is advantageous.
  • the radial dimension of the discs between the inside and the outside diameter is preferably about 25 - 50% of the radius or radial dimension of the discs 12.
  • the surface of discs 13 may be smooth but also slightly absorbent, and may be provided with holes or other perforations. The surface may be purposely roughened or be given a specified surface structure so as to obtain a larger air delivery or a greater pressure drop, which is in essence caused by microturbulence .
  • the diameter of the air outlet 3 is considerably smaller than that of inlet 2, with the ratio for example being 1 : 3 - 4, preferably 1 : 3.
  • the outlet 3 is preferably positioned in line with the lower half of discs 12, and the bottom edge of air outlet 3 is approximately in line with the lower tangent point of discs 12.
  • Air flow channel 4 does not necessarily have to be straight at air outlet 3, also other configurations are possible, of course.
  • shaft 9 When electric motor 11 is energized, shaft 9 will be driven to rotate at a predetermined, possibly controllable speed of a few thousand revolutions per minute and, due to the shape of the air flow channel, an air flow will take place on one side, on the bottom side of shaft 9 in the illustrated case, as a result of the friction of discs 12 along the air, as a result of which the air is carried along and flung outside at outlet 3, where the air channel is not bounded by casing 1 or by the water in water bath 8.
  • the flowing in and the flowing out of air to and from the discs 12 mainly takes place in a non-radial manner, as a result of which the generated air flow exerts a driving force on the freely rotating annular discs 13, which concentrically surround discs 12.
  • Said annular discs 13 run through the water of a water bath 8 on their lower side, as a result of which they are wetted, whereby the moisture can be absorbed by the air flow, thus increasing the air humidity level .
  • Heat of vaporization will be withdrawn from the air as a result of the evaporation of the water, thus causing the temperature of the air to decrease, so that the apparatus also functions as a cooling apparatus.
  • dust and other contaminations will adhere to the wet surface of discs 13, so that the apparatus also has a cleaning function. Since the discs 13 run through the water bath 8, the contaminations can be removed there, so that the discs 13 will remain clean.
  • the invention is not limited to the embodiment illustrated in the drawing and described above, which can be varied in several ways within the scope of the invention.
  • the humidifying means internally of the air flow elements. In that case humidification must take place in a different manner, of course, for example from the inside through the hollow shaft .
  • the humidifying means and the air flow means can also be mounted on parallel shafts, or on intersecting shafts, preferably provided they are integrated with each other.
  • water it is also possible to use another suitable liquid, of course, whilst the water may furthermore contain additives, such as antifreeze and/or aromatic substances.
  • the fan may comprise air flow elements other than discs, for example blades or the like, and may also be positioned outside the casing and may be used for other purposes too. With a proper design of the humidifyer it can be driven by the air flow of the fan, possibly with variable speed.
  • both the air flow means and the humidifying means may be constructed as discs which are housed in a common casing and rotate about parallel shafts, but which do not overlap.
  • the air flow means and the humidifying means may have their own drive or the drive of one may be branched off from the other through a variable transmission or coupling, so that both means may rotate with an optimal rotational speed which may vary in an absolute and relative sense depending on the circumstances .

Abstract

Cet appareil de conditionnement d'air comporte un carter (1) pourvu d'un canal d'écoulement d'air (4) et d'une soufflante comprenant une unité motrice (11), laquelle soufflante est montés dans le canal (4). Des humidificateurs sont équipés d'éléments humidificateurs (13) en rotation autour d'un arbre (9), partiellement à l'intérieur du canal d'écoulement d'air (4), et partiellement dans un organe d'alimentation en eau (8). La soufflante est pourvue d'éléments d'écoulement d'air (12) en rotation indépendamment des éléments humidificateurs (13). Les éléments humidificateurs (13) et les éléments d'écoulement d'air (12) sont sensiblement concentriques ou coaxiaux les uns par rapports aux autres, disposés de préférence au voisinage des éléments d'écoulement d'air (12) et dans les limites de leur sphère d'action. Les éléments d'écoulement d'air (12) sont notamment disposés à l'intérieur des éléments humidificateurs annulaires.
PCT/NL1998/000378 1997-07-02 1998-07-02 Appareil de conditionnement d'air WO1999001669A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP98932618A EP0993555B1 (fr) 1997-07-02 1998-07-02 Appareil de conditionnement d'air
AU82455/98A AU8245598A (en) 1997-07-02 1998-07-02 Apparatus for conditioning air
DE69821484T DE69821484T2 (de) 1997-07-02 1998-07-02 Vorrichtung zur luftbehandlung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1006451 1997-07-02
NL1006451A NL1006451C2 (nl) 1997-07-02 1997-07-02 Inrichting voor het behandelen van lucht.

Publications (1)

Publication Number Publication Date
WO1999001669A1 true WO1999001669A1 (fr) 1999-01-14

Family

ID=19765258

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1998/000378 WO1999001669A1 (fr) 1997-07-02 1998-07-02 Appareil de conditionnement d'air

Country Status (5)

Country Link
EP (1) EP0993555B1 (fr)
AU (1) AU8245598A (fr)
DE (1) DE69821484T2 (fr)
NL (1) NL1006451C2 (fr)
WO (1) WO1999001669A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000073709A1 (fr) * 1999-05-27 2000-12-07 The Waterpower Trust N.V. Procede et dispositif d'evaporation de liquide et tambour cylindrique destine a etre utilise dans ledit dispositif
WO2008037099A1 (fr) * 2006-09-29 2008-04-03 Plaston Ag Dispositif pour humidifier et purifier un flux d'air avec une pile de disques

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1616545A (en) * 1925-04-06 1927-02-08 James F Perkins Air-cooling device
US2157974A (en) * 1938-08-18 1939-05-09 Wentz Mark Air cooler and heater
US2440446A (en) * 1944-07-31 1948-04-27 Kenny Richard Joseph Apparatus for cooling or conditioning air or other fluids
US2524697A (en) * 1946-02-09 1950-10-03 Epperly George Evaporative cooler
US2655310A (en) * 1952-08-01 1953-10-13 Schlumbohm Peter Centrifugal fan
US3149626A (en) * 1963-05-20 1964-09-22 Lau Blower Co Humidifier
US3275223A (en) * 1964-08-03 1966-09-27 American Radiator & Standard Fluid moving means
DE1778268A1 (de) * 1967-04-18 1972-08-31 Sogeco Soc Gen Condizionamento In Verbindung mit Lufterhitzern,sogenannten Thermoventilatoren od.dgl. Geraete,zu verwendende Vorrichtung zum Befeuchten der Luft
US3705479A (en) * 1969-05-15 1972-12-12 Wilson W Mcpherson Apparatus for cooling air
FR2292882A1 (fr) * 1974-11-27 1976-06-25 Liber Jean Claude Machine tournante destinee a entrainer un fluide, utilisable, en particulier, comme ventilateur
DE2523199A1 (de) * 1975-05-26 1976-12-16 Bosch Gmbh Robert Reibungsgeblaese
DE3243080A1 (de) * 1982-11-22 1984-05-24 Brune, Pit Jürgen, 6945 Hirschberg Luftbefeuchtungsgeraet
EP0118811A2 (fr) * 1983-03-12 1984-09-19 Biocomfort Produkte zur Gesundheitspflege GmbH Dispositif d'épuration et/ou d'humidification d'air ou des gaz
EP0668475A1 (fr) * 1994-02-18 1995-08-23 Defensor Ag Appareil de conditionnement d'air

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1616545A (en) * 1925-04-06 1927-02-08 James F Perkins Air-cooling device
US2157974A (en) * 1938-08-18 1939-05-09 Wentz Mark Air cooler and heater
US2440446A (en) * 1944-07-31 1948-04-27 Kenny Richard Joseph Apparatus for cooling or conditioning air or other fluids
US2524697A (en) * 1946-02-09 1950-10-03 Epperly George Evaporative cooler
US2655310A (en) * 1952-08-01 1953-10-13 Schlumbohm Peter Centrifugal fan
US3149626A (en) * 1963-05-20 1964-09-22 Lau Blower Co Humidifier
US3275223A (en) * 1964-08-03 1966-09-27 American Radiator & Standard Fluid moving means
DE1778268A1 (de) * 1967-04-18 1972-08-31 Sogeco Soc Gen Condizionamento In Verbindung mit Lufterhitzern,sogenannten Thermoventilatoren od.dgl. Geraete,zu verwendende Vorrichtung zum Befeuchten der Luft
US3705479A (en) * 1969-05-15 1972-12-12 Wilson W Mcpherson Apparatus for cooling air
FR2292882A1 (fr) * 1974-11-27 1976-06-25 Liber Jean Claude Machine tournante destinee a entrainer un fluide, utilisable, en particulier, comme ventilateur
DE2523199A1 (de) * 1975-05-26 1976-12-16 Bosch Gmbh Robert Reibungsgeblaese
DE3243080A1 (de) * 1982-11-22 1984-05-24 Brune, Pit Jürgen, 6945 Hirschberg Luftbefeuchtungsgeraet
EP0118811A2 (fr) * 1983-03-12 1984-09-19 Biocomfort Produkte zur Gesundheitspflege GmbH Dispositif d'épuration et/ou d'humidification d'air ou des gaz
EP0668475A1 (fr) * 1994-02-18 1995-08-23 Defensor Ag Appareil de conditionnement d'air

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000073709A1 (fr) * 1999-05-27 2000-12-07 The Waterpower Trust N.V. Procede et dispositif d'evaporation de liquide et tambour cylindrique destine a etre utilise dans ledit dispositif
US6497111B2 (en) 1999-05-27 2002-12-24 The Waterpower Trust N.V. Method and device for evaporating a liquid and cylindrical drum for use in the device
WO2008037099A1 (fr) * 2006-09-29 2008-04-03 Plaston Ag Dispositif pour humidifier et purifier un flux d'air avec une pile de disques

Also Published As

Publication number Publication date
AU8245598A (en) 1999-01-25
DE69821484T2 (de) 2004-11-25
DE69821484D1 (de) 2004-03-11
NL1006451C2 (nl) 1999-01-05
EP0993555B1 (fr) 2004-02-04
EP0993555A1 (fr) 2000-04-19

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