WO1995013506A1 - Air cooler filter pad arrangement - Google Patents

Air cooler filter pad arrangement Download PDF

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Publication number
WO1995013506A1
WO1995013506A1 PCT/AU1994/000690 AU9400690W WO9513506A1 WO 1995013506 A1 WO1995013506 A1 WO 1995013506A1 AU 9400690 W AU9400690 W AU 9400690W WO 9513506 A1 WO9513506 A1 WO 9513506A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter pad
pad
wettable
filter
air
Prior art date
Application number
PCT/AU1994/000690
Other languages
French (fr)
Inventor
James Robert Wilton
Original Assignee
F F Seeley Nominees Pty. Ltd.
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 F F Seeley Nominees Pty. Ltd. filed Critical F F Seeley Nominees Pty. Ltd.
Priority to AU81345/94A priority Critical patent/AU8134594A/en
Publication of WO1995013506A1 publication Critical patent/WO1995013506A1/en

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
    • F24F6/02—Air-humidification, e.g. cooling by humidification by evaporation of water in the air
    • F24F6/04—Air-humidification, e.g. cooling by humidification by evaporation of water in the air using stationary unheated wet elements
    • F24F6/043—Air-humidification, e.g. cooling by humidification by evaporation of water in the air using stationary unheated wet elements with self-sucking action, e.g. wicks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/117—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using wet filtering
    • F24F8/125—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using wet filtering using wet filter elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/0035—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/117—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using wet filtering
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/54—Free-cooling systems

Definitions

  • This invention relates to a filter pad arrangement which can be utilised in an evaporative cooler wherein a pump circulates water from a sump and passes it downwardly through a wettable filter pad and back into the sump, while air is passed through the wet filter pad in a cross-flow path.
  • coolers are in common use and are very popular because of their economy both in purchase and in running, and the fact that the wet filter pad with the water cascading through it absorbs a large number of undesirable airborne particles or vapours or gases, and is usually very pleasant to breathe. Further, in most instances such coolers are used with a large amount of fresh air, at times up to 100% fresh air, and problems associated with recirculation such as spread of microbiological organisms, can be largely averted.
  • Filter pads which are most commonly used at the time of preparing this application are either of woodwool or other lignocellulose based absorbent material, and the water is distributed over the upper edge of the absorbent pad from a water distributor so that it flows down evenly over the whole area of the absorbent pad. Evaporation of the water into the air lowers the air temperature, while increasing its humidity (latent heat).
  • the main object of the invention therefore is to provide a filter pad arrangement wherein quick and easy filter replacement may be achieved, because when this operation is difficult, it is often just not done.
  • wettable filter pad With another wettable filter pad with another will not necessarily deal with all the pollutants which are sometimes in the air. They include not only dust particles and particles of pollen, but also products of combustion such as carbon monoxide, carbon dioxide, compounds of sulphur and aldehydes; chemical vapours and overspray; chemical particulates such as sulphur; and objectionable odours. Even when the wettable filtering medium is associated with a downward flow of water, only some of those other pollutants can be removed. Other filtering media is required for the absorption of carbon monoxide, and some of the other pollutants identified above. Activated carbon is one material which is useful for adsorbing pollutants, most of which have a higher molecular weight than air.
  • a prefilter for an evaporative cooler wherein air is first filtered for removal of some of the pollutants identified above before being passed through the wet filter pad to be washed clean of some of the remaining pollutants.
  • the filter pads should be readily and quickly removed, and in an embodiment of the invention there is provided an aperture in a housing, through which the prefilter can be positioned by simply sliding into the housing, or withdrawn by simply sliding out of the housing.
  • wettable absorbent filter pad refers to a pad of absorbent material which, when wetted, will have the effect of both evaporating some of its water into the air passing through the pad, and also filtering the air from certain pollutants. Such filter pads as presently used are ineffective when dry.
  • a “dry filter pad” is a filter pad which is expected to operate effectively when dry but not when wet. These characteristics are the reverse of those of the wettable filter pad.
  • this invention relates to a filter pad arrangement in an evaporative air cooler of the type having a wettable filter pad which in use is wet by water distributed over its upper edge and flowing down into a sump, and wherein air is both filtered and cooled by passing through the wet filter pad, and the invention is characterised more specifically by having an aperture in a wall of the cooler housing, with guides extending inwardly so that a prefilter pad can be quickly and easily inserted and withdrawn, and in some embodiments a second aperture located downstream of the first said aperture, also having guides extending into the housing which enable a wettable filter pad to be readily inserted or withdrawn.
  • the prefilter should be located upstream of the wettable filter pad.
  • the wettable filter pad should also be capable of being inserted or withdrawn quickly and efficiently, preferably laterally from beneath the water distributor. While the prefilter pad should also be capable of being inserted or withdrawn laterally in some designs of cooler-housing, it is often more convenient through the upper wall of the housing, and near the rear wall, upstream of the wettable filter pad in respect to air flow.
  • the wettable filter pad is not readily withdrawn or inserted through an aperture in a housing wall.
  • Fig 1 illustrates a frontal view of a cooler made in accordance with the Australian Design Application No 1204/93 (Registration No 118765);
  • Fig 2 is a rear view of same showing the manner in which a filter pad assembly can be slide into place through a pad loading aperture in a side wall of a housing;
  • Fig 3 illustrates the housing when the woodwool pad is inserted but a prefilter is partially withdrawn
  • Fig 4 is a section taken on the plane 4-4-4 of Fig 3, but only of the rear panel and the two pads;
  • Fig 5 is a section through Fig 2 on the plane 5-5-5, and also drawn to the larger scale of Fig 4;
  • Fig 6 is a fragmentary section through the prefilter pad of Fig 5, drawn to a much larger scale.
  • an air cooler 10 is the type which is portable and contains a fan which draws air through a grid 11 in a rear wall and discharges it through a grid 12 in the front wall of a housing 13, the housing 13 also being defined by a base 14, side walls 15 and upper wall 16, the rear grid 11 and front grid 12 being respectively air inlet and air outlet openings.
  • Figs 4 and 5 show in full lines the relevant portion of the housing 13, showing the rear wall grid 11 and portion of the side walls 15. Other mouldings complete the remainder of the side walls 15 and the front grid 12.
  • the wettable filter pad 20 While it is not essential in all instances to have the wettable filter pad 20 withdrawable as shown in Fig 2, it is desirable that it should be readily withdrawable and replaceable.
  • the wettable filter pad 20 is shown to be insertable through a pad loading aperture 21 in one side wall 15 of a housing, and as shown in Fig 5, when loaded its upper edge lies close to and immediately below the discharge edge of a water spreader 22.
  • the base 14 constitutes a sump, and as shown diagrammatical ly in dashed lines in Fig 5, sump 23 contains a pump 24 which pumps water up to the water spreader 22 so that the water will flow evenly downwardly through the filter material of the wettable filter pad 20.
  • prefilter 26 There is also illustrated the prefilter 26. It is not essential that prefilter 26 should be inserted or withdrawn laterally, and it is usually more convenient that it should be inserted in a pad loading aperture 27 in the upper wall 16.
  • guides 28 which extend inwardly into the housing 13 from the pad loading apertures, and facilitate withdrawal and insertion of the relevant pad assemblies, and location of them when they are inserted.
  • the main cleansing of air is by the water flowing through the wettable filter pad 20, since that water will tend to wash away a large portion of particulate material which may be airborne, and it will also dissolve some pollutants which are readily soluble in water. However, many of the pollutants which are not so readily dissolved in water should also be removed. Thus in highly polluted environments, as in some densely populated cities, it is desirable to get rid of carbon monoxide, carbon dioxide, sulphur compounds of combustion, and chemical vapours or minute droplets of liquid which may exist in the atmosphere and which can otherwise cause health difficulties.
  • the prefilter 26 (illustrated diagrammatically to a much larger scale in Fig 6) contains a membrane 30 of foam plastics material having intercommunicating cells, and this functions to reduce ingress of dust particles or oily vapours of substances into pockets containing carbon granules 31 which have been produced by a heat treatment process to be activated, the carbon granules being effective in adsorbing quantities of vapours or gases having high molecular weight, as well as some droplets of chemicals. Since the life of the carbon filters is very much less than the life of the wettable filter material of filter 20, it is more desirable that the prefilter should be more readily replaced than the wettable filter and for that reason the wettable filter 20 can be secured or located within the housing 13 by prior art methods. The illustrated arrangement however is preferred.
  • filters include substances which can accept and retain an electrostatic charge, of sufficient magnitude to release particulate material from being airborne, and such filters can also be employed, again upstream of the wettable filter pad 20.
  • the quality of air being breathed can be further enhanced, beyond what can be achieved by the wettable filter 20, and the prefilter pads can be readily renewed or replaced with a minimum of difficulty to a user.

Abstract

A filter pad arrangement in an evaporative cooler (10), wherein a wettable absorbent filter pad (20) is guided to slide laterally beneath a water spreader (22) which directs a flow of water downwardly through the pad, and a dry filter pad (26) is guided to slide into the cooler housing but externally of the wettable pad (20), to function as a prefilter.

Description

"AIR COOLER FILTER PAD ARRANGEMENT"
This invention relates to a filter pad arrangement which can be utilised in an evaporative cooler wherein a pump circulates water from a sump and passes it downwardly through a wettable filter pad and back into the sump, while air is passed through the wet filter pad in a cross-flow path.
Such coolers are in common use and are very popular because of their economy both in purchase and in running, and the fact that the wet filter pad with the water cascading through it absorbs a large number of undesirable airborne particles or vapours or gases, and is usually very pleasant to breathe. Further, in most instances such coolers are used with a large amount of fresh air, at times up to 100% fresh air, and problems associated with recirculation such as spread of microbiological organisms, can be largely averted.
Filter pads which are most commonly used at the time of preparing this application are either of woodwool or other lignocellulose based absorbent material, and the water is distributed over the upper edge of the absorbent pad from a water distributor so that it flows down evenly over the whole area of the absorbent pad. Evaporation of the water into the air lowers the air temperature, while increasing its humidity (latent heat).
In many instances there is a breakdown of filters after a period of time, due either or both to salt precipitation or disintegration of the filtering material. However, the equipment is sometimes used on cold days for heating, when it is usually associated with a heating element or other device, and the air passes through the wettable filter medium but the effectiveness of that filtering material is negligible when it is not wet. Air pollution, of course, can occur equally on cold days as on hot days, and there is therefore a requirement for air in a conditioned space to be effectively filtered not only of particulate material but also other undesirable components. The main object of the invention therefore is to provide a filter pad arrangement wherein quick and easy filter replacement may be achieved, because when this operation is difficult, it is often just not done.
However, the replacement of one wettable filter pad with another will not necessarily deal with all the pollutants which are sometimes in the air. They include not only dust particles and particles of pollen, but also products of combustion such as carbon monoxide, carbon dioxide, compounds of sulphur and aldehydes; chemical vapours and overspray; chemical particulates such as sulphur; and objectionable odours. Even when the wettable filtering medium is associated with a downward flow of water, only some of those other pollutants can be removed. Other filtering media is required for the absorption of carbon monoxide, and some of the other pollutants identified above. Activated carbon is one material which is useful for adsorbing pollutants, most of which have a higher molecular weight than air.
Thus in an embodiment of the invention there is provided a prefilter for an evaporative cooler wherein air is first filtered for removal of some of the pollutants identified above before being passed through the wet filter pad to be washed clean of some of the remaining pollutants. Once again, it is desirable that the filter pads should be readily and quickly removed, and in an embodiment of the invention there is provided an aperture in a housing, through which the prefilter can be positioned by simply sliding into the housing, or withdrawn by simply sliding out of the housing.
For the purposes of this invention the words "wettable absorbent filter pad" refers to a pad of absorbent material which, when wetted, will have the effect of both evaporating some of its water into the air passing through the pad, and also filtering the air from certain pollutants. Such filter pads as presently used are ineffective when dry. A "dry filter pad" is a filter pad which is expected to operate effectively when dry but not when wet. These characteristics are the reverse of those of the wettable filter pad. BRIEF SUMMARY OF THE INVENTION
Briefly in this invention relates to a filter pad arrangement in an evaporative air cooler of the type having a wettable filter pad which in use is wet by water distributed over its upper edge and flowing down into a sump, and wherein air is both filtered and cooled by passing through the wet filter pad, and the invention is characterised more specifically by having an aperture in a wall of the cooler housing, with guides extending inwardly so that a prefilter pad can be quickly and easily inserted and withdrawn, and in some embodiments a second aperture located downstream of the first said aperture, also having guides extending into the housing which enable a wettable filter pad to be readily inserted or withdrawn.
With the invention it is possible to provide a better quality of air for breathing purposes in highly polluted environments. Since some of the prefilter materials required for filtering undesirable pollutants which will not be efficiently filtered by the wet pad are effective only when dry, it is clearly desirable that the prefilter should be located upstream of the wettable filter pad. Furthermore, although replacement of the prefilter pad is likely to be far more frequent than replacement of the wettable filter pad, it is often convenient that the wettable filter pad should also be capable of being inserted or withdrawn quickly and efficiently, preferably laterally from beneath the water distributor. While the prefilter pad should also be capable of being inserted or withdrawn laterally in some designs of cooler-housing, it is often more convenient through the upper wall of the housing, and near the rear wall, upstream of the wettable filter pad in respect to air flow.
In some embodiments of the invention, the wettable filter pad is not readily withdrawn or inserted through an aperture in a housing wall. BRIEF DESCRIPTION OF THE DRAWINGS
An embodiment of the invention is described hereunder in some further detail with reference to and as illustrated in the accompanying drawings in which:
Fig 1 illustrates a frontal view of a cooler made in accordance with the Australian Design Application No 1204/93 (Registration No 118765);
Fig 2 is a rear view of same showing the manner in which a filter pad assembly can be slide into place through a pad loading aperture in a side wall of a housing;
Fig 3 illustrates the housing when the woodwool pad is inserted but a prefilter is partially withdrawn;
Fig 4 is a section taken on the plane 4-4-4 of Fig 3, but only of the rear panel and the two pads;
Fig 5 is a section through Fig 2 on the plane 5-5-5, and also drawn to the larger scale of Fig 4; and
Fig 6 is a fragmentary section through the prefilter pad of Fig 5, drawn to a much larger scale.
In Fig 1 , an air cooler 10 is the type which is portable and contains a fan which draws air through a grid 11 in a rear wall and discharges it through a grid 12 in the front wall of a housing 13, the housing 13 also being defined by a base 14, side walls 15 and upper wall 16, the rear grid 11 and front grid 12 being respectively air inlet and air outlet openings.
Figs 4 and 5 show in full lines the relevant portion of the housing 13, showing the rear wall grid 11 and portion of the side walls 15. Other mouldings complete the remainder of the side walls 15 and the front grid 12.
While it is not essential in all instances to have the wettable filter pad 20 withdrawable as shown in Fig 2, it is desirable that it should be readily withdrawable and replaceable. In Fig 2, the wettable filter pad 20 is shown to be insertable through a pad loading aperture 21 in one side wall 15 of a housing, and as shown in Fig 5, when loaded its upper edge lies close to and immediately below the discharge edge of a water spreader 22. The base 14 constitutes a sump, and as shown diagrammatical ly in dashed lines in Fig 5, sump 23 contains a pump 24 which pumps water up to the water spreader 22 so that the water will flow evenly downwardly through the filter material of the wettable filter pad 20.
In some instances it is possible to have the pad loading aperture for the pad 20 in the upper wall 16, but in most instances the water spreader 22 will overlap the upper edge of pad 20 and therefore pad 20 must be loaded laterally.
There is also illustrated the prefilter 26. It is not essential that prefilter 26 should be inserted or withdrawn laterally, and it is usually more convenient that it should be inserted in a pad loading aperture 27 in the upper wall 16.
In both cases, there are provided guides 28 which extend inwardly into the housing 13 from the pad loading apertures, and facilitate withdrawal and insertion of the relevant pad assemblies, and location of them when they are inserted.
The main cleansing of air is by the water flowing through the wettable filter pad 20, since that water will tend to wash away a large portion of particulate material which may be airborne, and it will also dissolve some pollutants which are readily soluble in water. However, many of the pollutants which are not so readily dissolved in water should also be removed. Thus in highly polluted environments, as in some densely populated cities, it is desirable to get rid of carbon monoxide, carbon dioxide, sulphur compounds of combustion, and chemical vapours or minute droplets of liquid which may exist in the atmosphere and which can otherwise cause health difficulties. In this embodiment, the prefilter 26 (illustrated diagrammatically to a much larger scale in Fig 6) contains a membrane 30 of foam plastics material having intercommunicating cells, and this functions to reduce ingress of dust particles or oily vapours of substances into pockets containing carbon granules 31 which have been produced by a heat treatment process to be activated, the carbon granules being effective in adsorbing quantities of vapours or gases having high molecular weight, as well as some droplets of chemicals. Since the life of the carbon filters is very much less than the life of the wettable filter material of filter 20, it is more desirable that the prefilter should be more readily replaced than the wettable filter and for that reason the wettable filter 20 can be secured or located within the housing 13 by prior art methods. The illustrated arrangement however is preferred.
In certain other instances, alternative filtering material is preferred, and this can readily be used in this invention as some alternatives to the carbon prefilter arrangement as shown. For example, known filters include substances which can accept and retain an electrostatic charge, of sufficient magnitude to release particulate material from being airborne, and such filters can also be employed, again upstream of the wettable filter pad 20.
By use of this invention, the quality of air being breathed can be further enhanced, beyond what can be achieved by the wettable filter 20, and the prefilter pads can be readily renewed or replaced with a minimum of difficulty to a user.

Claims

THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS:
1. A filter pad arrangement in an evaporative air cooler of the type wherein a housing has base, front, rear, side and upper walls defining between them a sump, air inlet and air outlet openings, the housing containing at least one wettable absorbent filter pad, a fan operative to impel air to flow through said air inlet opening, into said housing, through said filter pad, and to be discharged through said air outlet opening, and a pump operable to circulate water from said sump, downwardly through said wettable filter pad, and back into said sump, wherein said walls define a pad loading aperture, and further comprising a set of guides carried by at least one of said walls and extending into said housing from the pad loading aperture, the guide configuration being complementary to a filter pad to guide its edges for slidable movement between loaded and unloaded positions.
2. A filter pad arrangement according to claim 1 further comprising edge supporting members supporting at least one pair of opposite parallel edges of said wettable filter pad, said edge supporting members slidably engaging the guides of a said set in loading or unloading said wettable filter pad.
3. A filter pad arrangement according to claim 1 further comprising at least one further filter pad, said further filter pad being rectangular and having a peripheral frame of edge supporting members, and a further set of guides complementary to said further filter pad.
4. A filter pad arrangement according to claim 3 wherein said at least one further filter pad comprises filter material which is effective when dry.
5. A filter pad arrangement according to claim 3 or claim 4 wherein said at least one further filter pad is upstream of said wettable filter pad.
6. A filter pad arrangement according to anyone of claims 3, 4 or 5 wherein "said further filter pad lies adjacent to said wettable pad but its filter material does not contact said wettable pad.
7. A filter pad arrangement according to any one of claims 4 to 6 wherein there are two loading apertures and two sets of guides, one said loading aperture being in said housing upper wall and relevant said guides extending vertically downwardly therefrom and being in a configuration complementary to said further filter pad, and the other said loading aperture is in a said housing side wall and relevant said guides extend laterally inwardly therefrom and are in a configuration complementary to said wettable filter pad.
8. A filter pad arrangement according to any one of claims 3 to 7 wherein filter material of said further filter pad comprises a dry porous membrane of inert material.
9. A filter pad arrangement according to claim 8 wherein said further filter pad comprises granules of activated carbon downstream of said dry porous membrane.
10. A filter pad arrangement according to any one of claims 3 to 8 wherein filter material of said further filter pad comprises electrically chargeable material which, when charged, ionises particulate material.
11. A method of cooling and cleaning air comprising impelling a flow of air through a wettable filter pad within a housing which is according to claim 1 while passing water through the filter pad to both wash and cool the air, and prefiltering the air through a said further filter pad which is according to any one of claims 3 to 5 upstream of said wettable filter pad so as to remove from said air flow some pollutants which are not otherwise removed by said wettable filter pad.
PCT/AU1994/000690 1993-11-09 1994-11-09 Air cooler filter pad arrangement WO1995013506A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU81345/94A AU8134594A (en) 1993-11-09 1994-11-09 Air cooler filter pad arrangement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPM2304 1993-11-09
AUPM230493 1993-11-09

Publications (1)

Publication Number Publication Date
WO1995013506A1 true WO1995013506A1 (en) 1995-05-18

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WO1999001702A1 (en) * 1997-06-30 1999-01-14 Js Humidifiers Plc Humidifier
WO2001036879A1 (en) * 1999-11-15 2001-05-25 Honeywell Inc. Filter with handle feature
WO2001094137A1 (en) * 2000-06-07 2001-12-13 Anatoly Anatolyevich Kutyev Method for removing harmful impurities from the air and device for carrying out said method
WO2005012802A1 (en) * 2003-07-28 2005-02-10 F F Seeley Nominees Pty Ltd Evaporative humidifier
EP1983271A1 (en) * 2007-04-16 2008-10-22 Practical Technology, S.L. Cooling appliance
EP2090842A1 (en) * 2008-02-14 2009-08-19 Yi-Lin Tang Water-cooling fan with water heating coil for cooling, humidification and heating
EP2389546A1 (en) * 2008-11-28 2011-11-30 LG Electronics Inc. Humidifier
CN106855293A (en) * 2015-12-07 2017-06-16 山东联星能源集团有限公司 A kind of air purifier of intelligent air monitoring
CN108592258A (en) * 2016-04-22 2018-09-28 杭州云蜂工业设计有限公司 It is a kind of to use cascade filtered air clarifier
CN108592278A (en) * 2018-05-25 2018-09-28 郑州云海信息技术有限公司 A kind of data center's humidifier and its air-humidification method
CN109323341A (en) * 2015-01-13 2019-02-12 杭州希玛士贸易有限公司 Water filtering air purifier
WO2019170953A1 (en) * 2018-03-09 2019-09-12 Tomas Pardos Roberto Solar industrial device for refrigeration in livestock buildings
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WO2001094137A1 (en) * 2000-06-07 2001-12-13 Anatoly Anatolyevich Kutyev Method for removing harmful impurities from the air and device for carrying out said method
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EP1983271A1 (en) * 2007-04-16 2008-10-22 Practical Technology, S.L. Cooling appliance
EP2090842A1 (en) * 2008-02-14 2009-08-19 Yi-Lin Tang Water-cooling fan with water heating coil for cooling, humidification and heating
EP2389546A1 (en) * 2008-11-28 2011-11-30 LG Electronics Inc. Humidifier
EP2389546A4 (en) * 2008-11-28 2012-11-07 Lg Electronics Inc Humidifier
CN109323341A (en) * 2015-01-13 2019-02-12 杭州希玛士贸易有限公司 Water filtering air purifier
CN106855293A (en) * 2015-12-07 2017-06-16 山东联星能源集团有限公司 A kind of air purifier of intelligent air monitoring
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WO2019170953A1 (en) * 2018-03-09 2019-09-12 Tomas Pardos Roberto Solar industrial device for refrigeration in livestock buildings
CN108592278A (en) * 2018-05-25 2018-09-28 郑州云海信息技术有限公司 A kind of data center's humidifier and its air-humidification method
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