WO2009010528A1 - Dispositif assisté par ventilateur comprenant un filtre biocide - Google Patents

Dispositif assisté par ventilateur comprenant un filtre biocide Download PDF

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Publication number
WO2009010528A1
WO2009010528A1 PCT/EP2008/059294 EP2008059294W WO2009010528A1 WO 2009010528 A1 WO2009010528 A1 WO 2009010528A1 EP 2008059294 W EP2008059294 W EP 2008059294W WO 2009010528 A1 WO2009010528 A1 WO 2009010528A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
air
housing
cartridge
fan
Prior art date
Application number
PCT/EP2008/059294
Other languages
English (en)
Inventor
Martin Betz
Conor Mullaney
Original Assignee
Basic Holdings
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 Basic Holdings filed Critical Basic Holdings
Publication of WO2009010528A1 publication Critical patent/WO2009010528A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D27/00—Cartridge filters of the throw-away type
    • B01D27/02—Cartridge filters of the throw-away type with cartridges made from a mass of loose granular or fibrous material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0002—Casings; Housings; Frame constructions
    • B01D46/0005—Mounting of filtering elements within casings, housings or frames
    • B01D46/0006—Filter elements or cartridges installed in a drawer-like manner
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/0028—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions provided with antibacterial or antifungal means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
    • 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
    • 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
    • F24F8/15—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 by chemical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/04—Supports for the filtering elements
    • B01D2201/0407—Perforated supports on both sides of the filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/91—Bacteria; Microorganisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
    • B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/33—Retaining components in desired mutual position with a bayonet coupling

Definitions

  • a fan assisted appliance comprising a biocidal filter.
  • the present invention relates to a fan assisted appliance comprising a filter with biocidal properties.
  • the invention relates to a portable domestic fan assisted heating and/or cooling appliance for example, a fan or fan heater.
  • Portable fan assisted heating and/or cooling devices are known in the art. These are conventionally used for localised space heating or cooling and include a fan provided within a housing and powered off a mains power supply.
  • the housing is usually dimensioned such that the devices can be easily transported from one room to another as desired by the user.
  • the fan typically provides a directional blowing of the air out through a vent provided in a front face of the housing. In this way the orientation of the device is important and the user can selectively move the device so as to preferentially direct air towards one portion of the room or the other.
  • the housing typically includes a heating element. Air is drawn over the heating element, and the subsequently heated air is then expelled out through the vent.
  • heating elements are powered upto about 2kW, and through user control the actual heat output generated can be selected as fractions of the maximum output, i.e. no heat/fan only can be selected, half heat or indeed full heat may be preferential depending on the ambient temperature.
  • these devices simply provide for recirculation of air within the room or space where the device is located.
  • the air is drawn in through a rear portion of the housing and then accelerated through the action of the fan thereon and directed outwardly through the housing. This assisted movement of the air, while beneficial in increasing air currents within the room, suffers in that the air quality is the same prior to and subsequent to interaction with the fan device.
  • a portable fan assisted heating and/or cooling appliance in accordance with the teachings of the invention which includes a biocidal filter locatable within an air path of the device and which is actable on constituents of that air path to effect a disinfection of the air.
  • the filter may be located across the entire air path or may be located across selective portions, the amount of overlap defining the volume of air within the air path that is brought into contact with the filter.
  • the filter is removable or replaceable. Accordingly the invention provides a device according to claim 1 with advantageous embodiments provided in claims dependent thereto.
  • the invention also provides a cartridge according to claim 25.
  • Figure 1 is a perspective view from the back of a fan assisted heating and/or cooling appliance according to an embodiment of the invention showing the fan body, air inlet and the filter cartridge in place at the inlet of the fan;
  • Figure 2 is a perspective view from the front of the fan of Fig. 1 ;
  • Figure 3 is a broken out view of a filter cartridge according to the invention showing the components thereof;
  • Figure 4 is a plan view from the side of the fan of Fig. 1 illustrates the flow of air through the filter and the fan during operation;
  • Figure 5 is a perspective from the back of the device of Fig. 1 showing the filter removed there from;
  • Figs. 6 and 7 are perspective views of a fan assisted heating and/or cooling device of an alternative embodiment of the invention; in this case; Fig. 6 shows the filter removed from the device and Fig. 7 shows the filter in place on the device;
  • Figs. 8 and 9 are perspective views of a fan assisted heating and/or cooling device of an alternative embodiment of the invention; in this case; Fig. 8 shows the filter removed from the device and Fig. 9 shows the filter in place on the device;
  • Figures 10(a) and 10(b) are schematic diagrams which illustrate the effects of a filter on the flow of air through a heating appliance.
  • a fan assisted device 1 comprises a housing 2 having a back wall 3 with an air inlet opening 8 and front wall 4 with an air outlet 9 and side walls 5.
  • the device houses a fan 6 located within the housing and which is configured to draw air in an air stream through the device from the air inlet through to the air outlet.
  • the thermal characteristics of the air may be modified for the purpose of effecting heating and/or cooling. This may be achieved in the context of a heating device by drawing the fan assisted air over a heating element within the housing 2, or in the context of cooling by use of a cooling element such as a Peltier arrangement.
  • the device further comprises a filter cartridge 7 locatable within at least a portion of the air stream or air passage and being configured to effect filtering of the air passing therethrough.
  • the air passage may be a defined air path or air conduit within the housing 2 which defines the passage of the air stream through the device.
  • the filter cartridge 7 is desirably located upstream from the fan for example, on the inlet side of the fan as opposed to the outlet side.
  • the fan assisted device 1 is to be used as a heater it is necessary that the housing incorporate a heating element of the type that will be well known to those skilled in the art and as such is not shown in the drawings.
  • the device 1 is operable to effect heating and/or cooling of the air passing therethrough depending on whether or not the heating element is activated.
  • the filter cartridge 7 comprises a filter support 10 comprising corresponding front and back and central support rings 11 , 12, and 13. Gauze elements 14 are supported between each of the front and back support and central support rings which essentially define a frame for the gauze elements.
  • the gauze elements 14 may be formed from a metal, plastic or fabric gauze.
  • the corresponding front and back support rings 11 and 12 comprise internal structural support features namely concentric ring formations 16 and spokes 17 which abut or interconnect when the corresponding support rings 11 and 12 are mated together to provide support for the filter material.
  • These support features also maintain the structural integrity of the filter in that they define the external perimeter of the filter and can serve to prevent accidental contact with the actual gauze elements.
  • the filter cartridge 7 is configured to support and retain a biocidal material therein. When assembled, the filter cartridge 7 is air permeable and has an air resistance and air flow characteristics which makes it suitable for use in the fan assisted device 1.
  • the biocidal material which may be for example biocidal granules 15 are provided between the gauze elements 14, in effect are sandwiched therein. Although it will be appreciated that other suitable forms of biocidal agent or material may also be provided, and it is not intended to limit the present teaching to granules.
  • the biocidal material is provided and serves to control microbial growth and in effect kill bacteria, viruses and fungi that come in contact therewith.
  • a key difference between an active biocidal filter- such as herein used- and a passive type filter is the fact that there is no regrowth in the pathogens in the biocidal whereas a passive type filter which traps the microbial pathogens provides an environment for regrowth to take place uninhibited.
  • the exemplary filter cartridge 7 consists of a packed bed of the biocidal material which is porous so as to cause minimum obstruction to the air flow and at the same time is capable of interacting with the air stream and yielding high biocidal activity.
  • the packed bed material of the filter cartridge must necessarily exhibit air flow characteristics which are consistent and within the defined limits of air flow of the heating device.
  • the filter is desirably packed such that it exhibits uniform air flow characteristics across the width of the filter. The airflow through the filter will typically be somewhat reduced but consistent with the air throughput of the fan device, had the filter not been fitted.
  • the filter cartridge may include a honeycomb structure, or a series of horizontal compartments provided internally for example, formed in the gauze or other suitable material to support the filter material and to prevent it from moving over time. Any means for supporting a filter within the air stream of the housing will find application within the context of the teaching of the present invention.
  • the arrangement of the components of the filter cartridge is important to ensure effective operation of the system, especially in those arrangements where the filter is located across the entire air passage. For those arrangements where the filter partially occludes the air passage, it will be appreciated that any decrease in the rate of air passing through the filter over time will be compensated by a diversion of some of the air in the air passage through the non-obstructed path.
  • the air flow must be consistent in volume production. Any inconsistency or spread in flow characteristic will lead to reduced airflow. This can be detrimental to the performance or operation of the device. For example in the case of a heater if air flow is reduced the heater will run too hot as the air cannot transfer the heat away form the heating element as required, and a safety cutout, if provided, will operate in the product.
  • air is drawn into the fan heater 1 via the air inlet 8 by the operation of the fan.
  • the incoming air is drawn by the fan through the filter cartridge 7 where it is filtered prior to being heated.
  • the housing of the heater defines a path or conduit for air passing there through. Air is drawn into the housing via the inlet, and through the filter, and past the heating element, where it is heated, and discharged out through the outlet. It will be understood that it is advantageous that the filter is located upstream of the heating element to ensure that the effectiveness of the filter particles are not degraded through heating.
  • the filter is placed at a suitable separation from the heating element to maintain a balance between protecting the filter from the effects of heating and providing the required levels of filtering of air drawn through the filter while at the same time controlling the air flow though the air path or conduit defined by the housing.
  • the filter is arranged within the device housing so that substantially all of the air entering the housing passes through it, to provide an effective filtering of the air.
  • the filter may not require such a complete occlusion of the air path by the filter- this will obviously reduce the portion of the air that is being filtered, but as at least some air is being filtered such a device is still advantageous over the prior art.
  • the device may comprise a filter bypass, allowing for a selective bypass of the filter.
  • the device may be configured to provide control of the flow of air passing through the conduit defined by the housing and more particularly of the amount of air passed through the filter and/or bypassing the filter as required. Control may be provided to ensure that an adequate air flow is maintained for example at a heating element within the housing. In cases where a fan heating or cooling device is configured for operation at different fan speeds or in different heating and cooling modes, the portion of air passing via the filter and/or filter bypass may be varied in response to the operative setting.
  • the controller may be configured to adjust the air flow as required in correspondence to the fan speed and/or the mode of operation for example the heating or cooling mode.
  • the housing may be configured to provide for a location of the filter accessible from the outside or via an external opening or surface of the housing. In such an arrangement a user may gain access to the filter without requiring a disassembly of the housing.
  • the filter may be located at the inlet and may be removably located thereto.
  • the face of the housing may be dimensioned to provide a recess or receiver within which the filter may be received.
  • the depth of the recess is desirably equivalent with the depth of the filter such that when received the filter is substantially flush with the outer surface of the housing.
  • a projection may assist in the enabling the user to remove a seated filter.
  • a seal may be provided between the receiver and the interior of the housing or between the receiver and the filter cartridge to ensure that all air entering the air conduit of the device passes through the filter.
  • the receiver may include mating features corresponding to features provided on an outer surface of the filter cartridge so assist in a location and locking of the filter within the housing.
  • One suitable way to achieve location of the filter within the housing is through a push and twist locking arrangement where the filter is initially pushed into the recess and then a relative rotation of the filter to the housing achieves a locking of the filter within the housing. To achieve a removal, the filter is then simply rotated the opposing direction and will slide out from the housing once unlocked.
  • the housing 2 of the fan heating and/ or cooling device may comprise a receiver or recess for receiving the filter.
  • the receiver is arranged in the air passage or conduit of the device as defined by the housing.
  • the filter housing or cartridge 7 may comprise a rigid outer shell or casing having features configured to mate with the receiver.
  • the external dimensions and the form of the outer shell of the filter correspond to the internal dimensions of the receiver. This arrangement ensures that the filter may be located as required for efficient filtering by the interaction of the filter and the receiver.
  • the filter and receiver are preferably configured to interact such that when inserted the filter and receiver are maintained in abutting or sealed contact.
  • the mating features of the filter and housing may be arranged such that the filter may be inserted into the receiver only in one way.
  • the arrangement of mating features provides for ease of handling by the end user, who typically will not be a trained operator.
  • the rigid outer shell or casing of the filter housing provides for ease of handling by the end user and is robust to enable handling during mass production and transportation.
  • the filter housing may be recyclable for example being configured for return and regeneration or refilling.
  • the filter is provided as a single integral component which does not require assembly by the end user.
  • the filter cartridge 7 has a generally annular form.
  • a corresponding receiver 18 for mating with the housing 2 and having a generally annular internal form for mating with the cartridge 7 may be provided.
  • the receiver may be mated to the housing by frictional fit and/or some corresponding mating features 19 and 20 and similarly the filter cartridge 7 may be mated to the receiver by means of a frictional fit and/or some corresponding mating features.
  • a seal 21 may be provided between the receiver 18 and the housing 2 and/or the receiver and filter cartridge 7.
  • FIGs. 6 to 9 some alternative exemplary embodiments of a fan assisted heating and/or cooling device according to the invention are shown. These drawings in particular illustrate alternative arrangements of the fan assisted device and how the filter may be located therein.
  • the detailed forms of fan assisted devices and the associated filters of these exemplary embodiments are of an alternative form to those described above with reference to Figs. 1 to 5, however, it will be appreciated that the main features and function of these components are similar to those described in detail above.
  • a fan assisted heating and/or cooling device 31 comprises a housing 32, having an inlet 38 and an outlet 39.
  • the device further comprises a filter cartridge 37 which is mountable to the device at a receiver 40.
  • the receiver 40 is arranged such that the filter cartridge 37 is locatable within the air passageway defined by the housing 32 of the device.
  • the cartridge and the receiver comprise corresponding mating features 41 and 42 to facilitate a secure connection there between.
  • the receiver is accessible from the exterior of the housing which facilitates ease of access. Air drawn into the device 31 will pass through the filter prior to being drawn further into the air passageway defined by the housing 32.
  • the mating of the cartridge to the housing in this arrangement is shown as being a slideable receipt of the cartridge within the receiver, the receipt being in downward direction such that the filter cartridge is presented from an upper surface of the housing and then slides vertically down into the receiver.
  • Such slideable arrangements facilitate ease of removal and replacement of the filter. It will be understood that if the orientation of the mating features was changed that a possible other engagement could be through a presentation from the side of the housing.
  • it is desirable that the full extent of insertion of the cartridge is defined by a stop member located on the housing and configured to limit the extent of insertion of the cartridge into its receiver. Once located a locking member could be used to maintain the cartridge within its locked position.
  • the filter cartridge 37 and the arrangement of the device 31 are similar to those described above with reference to Figs. 1 to 5 and are not repeated here.
  • the filter comprises a biocidal filter material 15 and has the requisite air flow characteristics for use in the device 31.
  • the filter 51 comprises a housing 52 having an inlet 58, an outlet 59 and a filter 57 which is mountable internally in the housing of the device in a receiver 60. When received it is dimensioned such that on complete insertion an upper surface of the filter is substantially planar to an upper surface of the housing. In this way, the filter is not projecting above the housing on receipt of the filter within the housing.
  • the filter should be housed at least at a minimum distance from the heating element of the device to ensure that heating or over heating does not become an issue.
  • the filter cartridges 37 and 57 are of similar composition and function as the filter cartridge 7.
  • Each comprises a support housing for supporting the filter material for example between first and second pieces of gauze therein.
  • the filter material is supported to prevent settlement of movement of the material which might result in an alteration of the flow characteristics of the filter over time.
  • the device may comprise one or more baffles to facilitate directing the air as required. It will be appreciated that suitable alternative means for directing or guiding air through the housing and the filter may be provided for example one or more ducts may be provided within the housing.
  • the invention may provide a device to which a filter is retrofitted.
  • a receiver may be provided for mounting within the air conduit defined by the housing of the heater for example by means of a frictional fit.
  • the location of the filter cartridge relative to the inlet and the fan is also an important factor in design of the device. For effective operation substantially all of the air passing through the inlet and the air conduit defined by the housing of the device should be drawn through the filter. Average air flow at the outlet grill for small portable fan heaters will be in the order of 1 -2m/s (volume flow ca
  • the filter is desirably configured and located such that the air flow of the device is uniform and consistent with the air throughput of the fan assisted device, had the filter not been fitted
  • the device of the invention may further comprise an indicator for indicating that the filter needs to be replaced.
  • the indicator may comprise a monitor for monitoring a particular physical parameter thereof, for example, air flow or any reduction in air flow and/or hours of operation and/or period of time elapsed since installation or other suitable parameter.
  • the indicator may comprise a sound or visual indicator to indicate and alert to the user that the filter should be replaced.
  • the device according to the invention may further comprise means for indicating to the device that the filter should be bypassed in the event that air flow is reduced so as to avoid any problems of over heating of the device.
  • the device may be configured to allow movement of a baffle defining an air path within the housing such that air flow is diverted away from the filter such that it can pass unobstructed.
  • Such movement may be provided automatically through for example use of an electronic controller or may require manual intervention.
  • FIG. 10 (a) shows schematically an arrangement in which a constant air flow is maintained.
  • the device is optimally configured to operate below an ideal temperature 1000, with the flow rate through the heater ensuring that this temperature is not exceeded. On occasion, the temperature will increase above this ideal temperature.
  • the device is normally provided with a preset value or thermal cut out value 1001 , which on detection will effect a shut-down of the heater to ensure that overheating is not achieved.
  • the constant flow prevents the temperature of the heating element from reaching the thermal trip point 1001. There is a margin for error 1003 between the ideal temperature and the cut out value.
  • the filter of the device of the invention is designed so as maintain a constant air flow, such that the margin for error is not impinged.
  • the filter which has biocidal kill and airstream disinfection properties filters and cleans the air passing therethrough.
  • the device according to the invention would target among others the following micro-organisms Bacillus globigii spores, Staphylococcus aureus (vegetative Gram positive bacteria), Penicilium (ascomyceteous fungi) and Aspergillus Niger.
  • a fan assisted heater having a heating element has been described. It will be understood that such a device may be operated as an air circulating fan to effect cooling, without operating the heating element.
  • the fan assisted heating and/or cooling device of the invention may in particular be a domestic fan heater which is portable and self-contained. It will be appreciated that the fan assisted device of the invention may alternatively comprise a device having humidifier function, for example.
  • the active biocidal component is comprised of biocidal granules
  • a biocidal component of a suitable alternative form may also be used.
  • gauze elements have been used to support the biocidal component
  • a suitable alternative material may also be used.
  • a key feature of the invention is in the low air resistance of the fan which is configured to achieve high levels of filtering with minimum impact on the rate of air flow through the device.
  • the fan assisted device comprising a biocidal filter according to the invention has the advantage that the filter has biocidal kill properties and air stream disinfection properties.
  • the device according to the invention makes it possible to achieve high levels of hygiene in a domestic or other similar use environment.
  • the filter cartridge may be provided with the heater directly at manufacture or alternatively may be provided for retrofitting or replacement into the housing of a heater.
  • a device may include a filter and a filter receiver which are easily accessible to enable the filter to be changed as required. This enables the user to maintain high levels and efficiency of filtering.
  • the use of an indicator to indicate when the filter needs to be changed further ensures that the required levels of filtering are maintained.
  • the filter is provided as a single integral component which may be replaced by the end user as required.
  • the filter advantageously does not require assembly, rather the replacement of one filter by another is a simple take and replace action- one filter is taken out and a corresponding new filter provided in its place. As the dimensions of the housing receiver and the filter match, the end user has no difficulty in replacing old filters..
  • the filter has the advantage that it is suitable for use in the context of a portable fan assisted device or appliance. It is compact and robust and has an air resistance matched to the air flow requirements of such devices. Air flow of such devices may be varied and/or operated in heating or cooling modes and the specification describes control of air flow and an air filter bypass means.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • General Chemical & Material Sciences (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

La présente invention porte sur un dispositif de chauffage et/ou de refroidissement assisté par ventilateur, portable, ayant un boîtier, un orifice d'entrée d'air, un orifice de sortie d'air et un ventilateur pour aspirer de l'air à travers le dispositif; le dispositif étant configuré tout d'abord pour chauffer et/ou refroidir l'air passant à travers celui-ci, et le dispositif comprenant en outre un filtre perméable à l'air amovible ayant une matière de filtre biocide et étant configuré en second lieu pour filtrer l'air passant à travers celui-ci.
PCT/EP2008/059294 2007-07-16 2008-07-16 Dispositif assisté par ventilateur comprenant un filtre biocide WO2009010528A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0713752.4 2007-07-16
GB0713752A GB2451423B (en) 2007-07-16 2007-07-16 A Fan assisted appliance comprising a biocidal filter

Publications (1)

Publication Number Publication Date
WO2009010528A1 true WO2009010528A1 (fr) 2009-01-22

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WO (1) WO2009010528A1 (fr)

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CN102200146A (zh) * 2010-03-23 2011-09-28 戴森技术有限公司 风扇
WO2011117598A1 (fr) * 2010-03-23 2011-09-29 Dyson Technology Limited Ventilateur
EP2409751A1 (fr) * 2010-07-23 2012-01-25 Valeo Matériaux de Friction Dispositif de filtration d'air et installation de circulation d'air, notamment pour un véhicule automobile, comprenant un tel dispositif.
US8770946B2 (en) 2010-03-23 2014-07-08 Dyson Technology Limited Accessory for a fan
FR3022470A1 (fr) * 2014-06-18 2015-12-25 Sandra Celine Severine Lefrancois Boitier porte-cartouche filtrantes contre les pollutions exterieures, dispose sur entrees d'aire murals, des portes, fenetres, coffres de volet roulant couples aux ventilations mecaniques.
US9816531B2 (en) 2008-10-25 2017-11-14 Dyson Technology Limited Fan utilizing coanda surface
EP3306218A1 (fr) 2016-10-06 2018-04-11 Unilever N.V. Purificateur d'air
CN109069971A (zh) * 2016-04-18 2018-12-21 首尔伟傲世有限公司 空气净化器
DE102020125920B4 (de) 2020-10-04 2022-05-19 Elke Münch Durch eine Temperaturdifferenz betreibbare, mobile Vorrichtung zur Reinigung und Desinfizierung von Raumluft
DE102020125921B4 (de) 2020-10-04 2022-05-19 Elke Münch Durch eine Temperaturdifferenz betreibbare, mobile Vorrichtung zur Reinigung und Desinfizierung von Raumluft
DE102020125919B4 (de) 2020-10-04 2022-06-23 Elke Münch Durch eine Temperaturdifferenz betreibbare, mobile Vorrichtung zur Reinigung und Desinfizierung von Raumluft und eine Testvorrichtung hierfür
WO2023219665A1 (fr) * 2022-05-11 2023-11-16 Watt Fuel Cell Corp. Ensemble filtre de soufflante

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ITUB20153572A1 (it) * 2015-09-11 2017-03-11 Torino Politecnico Modulo di ventilazione e depurazione biologica di aria interna ed esterna ad un ambiente, e relativo metodo

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10145388B2 (en) 2008-10-25 2018-12-04 Dyson Technology Limited Fan with a filter
US9816531B2 (en) 2008-10-25 2017-11-14 Dyson Technology Limited Fan utilizing coanda surface
GB2478926B (en) * 2010-03-23 2016-09-28 Dyson Technology Ltd Portable Fan Assembly with Detachable Filter Unit
WO2011117598A1 (fr) * 2010-03-23 2011-09-29 Dyson Technology Limited Ventilateur
WO2011117599A1 (fr) * 2010-03-23 2011-09-29 Dyson Technology Limited Ventilateur
CN102200146A (zh) * 2010-03-23 2011-09-28 戴森技术有限公司 风扇
US8770946B2 (en) 2010-03-23 2014-07-08 Dyson Technology Limited Accessory for a fan
US8882451B2 (en) 2010-03-23 2014-11-11 Dyson Technology Limited Fan
FR2962920A1 (fr) * 2010-07-23 2012-01-27 Valeo Materiaux De Friction Dispositif de filtration d'air et installation de circulation d'air, notamment pour un vehicule automobile, comprenant un tel dispositif.
EP2409751A1 (fr) * 2010-07-23 2012-01-25 Valeo Matériaux de Friction Dispositif de filtration d'air et installation de circulation d'air, notamment pour un véhicule automobile, comprenant un tel dispositif.
FR3022470A1 (fr) * 2014-06-18 2015-12-25 Sandra Celine Severine Lefrancois Boitier porte-cartouche filtrantes contre les pollutions exterieures, dispose sur entrees d'aire murals, des portes, fenetres, coffres de volet roulant couples aux ventilations mecaniques.
CN109069971A (zh) * 2016-04-18 2018-12-21 首尔伟傲世有限公司 空气净化器
EP3306218A1 (fr) 2016-10-06 2018-04-11 Unilever N.V. Purificateur d'air
DE102020125920B4 (de) 2020-10-04 2022-05-19 Elke Münch Durch eine Temperaturdifferenz betreibbare, mobile Vorrichtung zur Reinigung und Desinfizierung von Raumluft
DE102020125921B4 (de) 2020-10-04 2022-05-19 Elke Münch Durch eine Temperaturdifferenz betreibbare, mobile Vorrichtung zur Reinigung und Desinfizierung von Raumluft
DE102020125919B4 (de) 2020-10-04 2022-06-23 Elke Münch Durch eine Temperaturdifferenz betreibbare, mobile Vorrichtung zur Reinigung und Desinfizierung von Raumluft und eine Testvorrichtung hierfür
WO2023219665A1 (fr) * 2022-05-11 2023-11-16 Watt Fuel Cell Corp. Ensemble filtre de soufflante

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GB2451423B (en) 2010-07-21
GB2451423A (en) 2009-02-04
GB0713752D0 (en) 2007-08-22

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