WO2008039064A2 - Air cleaning device provided with a uv lamp - Google Patents

Air cleaning device provided with a uv lamp Download PDF

Info

Publication number
WO2008039064A2
WO2008039064A2 PCT/NL2007/000244 NL2007000244W WO2008039064A2 WO 2008039064 A2 WO2008039064 A2 WO 2008039064A2 NL 2007000244 W NL2007000244 W NL 2007000244W WO 2008039064 A2 WO2008039064 A2 WO 2008039064A2
Authority
WO
WIPO (PCT)
Prior art keywords
air
air duct
lamp
cleaning device
duct
Prior art date
Application number
PCT/NL2007/000244
Other languages
French (fr)
Other versions
WO2008039064A3 (en
Inventor
Hendrikus Joseph Vianen
Original Assignee
Randolph Beleggingen 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 Randolph Beleggingen B.V. filed Critical Randolph Beleggingen B.V.
Publication of WO2008039064A2 publication Critical patent/WO2008039064A2/en
Publication of WO2008039064A3 publication Critical patent/WO2008039064A3/en

Links

Classifications

    • 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
    • A61L9/18—Radiation
    • A61L9/20—Ultraviolet radiation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes
    • 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
    • F24F8/192—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 electrical means, e.g. by applying electrostatic fields or high voltages
    • 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
    • F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
    • F24F8/22—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using UV light
    • 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

Definitions

  • Air cleaning device provided with a UV lamp.
  • the present invention relates to an air cleaning device, comprising a housing formed with an air duct and having an air inlet and an air outlet, so that air containing contaminants can flow through the air duct to the air outlet via the air inlet, and at least one UV lamp disposed in the air duct for destroying at least part of the contaminants in the air that flows through the air duct past said at least one UV lamp.
  • an air cleaning device is used as a range hood in kitchens, in particular industrial kitchens.
  • the known range hood comprises a housing provided with an air inlet, through which air can be drawn from a kitchen into the housing by means of a fan.
  • the interior of the housing forms an air duct, through which air drawn into the housing flows to an air outlet.
  • a number of UV lamps are disposed in the air duct for destroying fats and the like. Air that passes the UV lamps is subsequently returned to the environment via the air outlet. The air outlet opens into the kitchen from where the air was withdrawn via the air inlet, or into a building of which the kitchen forms part.
  • range hoods that are used in such an environment.
  • a drawback of the known range hood is that the range hood filters and destroys a large part of the fats and the like present in the air that flows through the air duct, to be true, but that a considerable amount of fats and the like still passes the UV lamps and flows out of the air duct via the air outlet.
  • additional filters or UV lamps further downstream in the air flow has a relatively minor effect on the effectiveness of the range hood in proportion to the additional costs for adapting the air cleaning device and possibly the resulting higher energy consumption.
  • an object of the present invention to provide an air cleaning device as referred to in the introduction by means of which fats and the like can be removed from the air flowing through the air duct in a more effective manner.
  • This object is accomplished by the present invention in that at least one retardation element is provided in the air duct, which prolongs the residence time of air flowing through the air duct near said at least one UV lamp.
  • the air will be exposed to said at least one UV lamp for a longer period of time than in an air cleaning device not provided with a retardation element, so that a larger part of the fats and the like passing through the air duct will be destroyed by said at least one UV lamp.
  • the embodiment of said at least one retardation element can be selected from a variety of embodiments, among which relatively simple, inexpensive solutions and more complex solutions, which may provide a higher degree of effectiveness.
  • said at least one retardation element downstream of said at least one UV lamp in the air duct.
  • the air flow will be blocked in part, such that air will accumulate in the duct in front of said at least one retardation element.
  • An additional effect is that the air, and thus also the fat particles and the like, around said at least one UV lamp is compressed as a result of the air flow being partially blocked downstream of said at least one UV lamp.
  • the retardation element comprises a baffle that partially blocks the air duct.
  • a baffle is easy to mount in the air duct and capable of effectively retarding the air that flows through the air duct.
  • said retardation element comprises a wall which shuts off the air duct for the greater part. Since the wall shuts off the air duct for the greater part, the air flow is slowed down to a significant extent and the direction of the air flow is partially reversed at the location of said wall. This increases the chance that a fat particle or the like present in the air flow will be exposed to said at least one UV lamp long enough to be destroyed.
  • the baffle that partially blocks the air duct or the wall that blocks the air duct for the greater part is provided with through-flow openings. The dimension of said through-flow openings can be selected in dependence on the use of the air cleaning device.
  • said retardation element comprises at least one swirl element for generating turbulence in the air that flows through the air duct near the UV lamp.
  • the turbulence generated in the air flow increases the chance that fat particles and the like present in the air flow will be exposed sufficiently long to said at least one UV lamp, so that they will be destroyed.
  • said at least one swirl element is attached to the wall that blocks the air duct for the greater part. This makes it readily possible to install the swirl element in the air duct in one operation, in correct alignment with the wall in the air duct that blocks the air duct for the greater part. It is also possible, however, to provide separate swirl elements if a more desirable turbulence can thus be generated in an air flow through the air duct.
  • a filter device is provided in the air duct upstream of said at least one UV lamp.
  • the filter device can filter a first substantial part of the fat particles and the like present in the air from the air, after which said at least one UV lamp is used for destroying the fat particles and the like that have passed through the filter.
  • the combination of a mechanical fat filter and UV lamps disposed downstream thereof has appeared to be very effective in practice. Because of the more effective way in which the UV lamps can do their destructive work, a highly effective filter is provided, for example for professional kitchens, also for the aforesaid combination of a filter and at least one UV lamp.
  • Figure 1 is a schematic view of a range hood 1 according to the present invention, comprising a housing 2, an air inlet 3 and an air outlet 4.
  • a (mechanical) filter 5 is provided in the range hood 1.
  • a number of UV lamps 6 are provided in the housing 2 within a casing 7, which casing is fitted with a barrier wall 9 provided with through-flow openings 8 at a location further downstream in the air flow that flows through the range hood from the air inlet 3 to the air outlet 4.
  • the casing is provided with means for slowing down the air flow and/or generating turbulence therein.
  • Said means include a curve 10 in the barrier wall at the through- flow openings, a ribbed surface 11 of the barrier wall 9 between the through-flow openings 8 and a cone-shaped projection 12a, 12b, 12c projecting from the barrier wall 9 between the through-flow openings 8 in the opposite direction of the air flow.
  • different means are provided at different locations in the range hood 2, but each individual means can contribute to the intended effect of air turbulence in the housing 2 near the UV lamps.
  • the operation of the range hood in figure 1 is as follows.
  • a fan (not shown) draws air from outside the range hood 2 through the air inlet 3 into the range hood, through the (mechanical) filter, past the UV lamps 6, through the through-flow openings 8 to the air outlet 4.
  • the (mechanical) filter 5 is a so-called labyrinth filter, in which air that flows through the labyrinth filter is deflected by curved ducts in the labyrinth filter.
  • Dirt or fat particles present in the air have a higher specific weight than the air in which they are present, so that they will experience a higher centrifugal force and, as a result of their slow deceleration, a smaller deflection, as a result of which a number of the dirt and fat particles will collide with walls of the labyrinth filter and remain behind on the walls of the labyrinth filter. Dirt and fat will be discharged by the labyrinth filter under the influence of the force of gravity, for example to a fat tray (not shown).
  • UV lamps 6 are provided downstream of the (mechanical) filter 5.
  • Said UV lamps expose the air flowing through the casing 7 to UV radiation, the purpose being to destroy dirt and fat particles that have passed the (mechanical) filter 5 yet.
  • the efficiency of the destruction of said dirt and fat particles depends inter alia on the duration of the radiation, the distance at which the dirt and fat particles pass the UV lamps and the intensity of the UV lamps.
  • a barrier wall 9 is provided close to the UV lamps, downstream of said UV lamps, which barrier wall 9 is provided with through-flow openings 8.
  • the barrier wall 9 reduces the flow rate of the air flowing through the casing 7, so that dirt and fat particles will on average be exposed longer to the UV radiation of the UV lamps than in the situation in which such a barrier wall 9 is not provided.
  • the barrier wall 9 is provided with a number of turbulence- generating means, which generate turbulence in part of the air flowing through the casing 7, so that the air will stay longer in the casing 7 so as to effect an even more prolonged exposure of dirt and fat particles to the UV lamps. A number of such means are shown in the embodiment of figure 1.
  • the barrier wall 9 is slightly curved "inwards" around the through-flow openings 8, i.e. a profile directed against the flow of air through the casing 7 surrounds the through-flow openings 8.
  • air in question is slowed down, air flows in the opposite direction of the air flow around the through-flow openings 8, as a result of which part of said "fresh" air flow is opposed as well.
  • swirls develop in the casing 7, so that air will be exposed to UV radiation from the UV lamps for a longer period of time than without the aforesaid measure.
  • turbulence-generating means is a ribbed surface 11 on (at least part of) the barrier wall.
  • Said ribbed surface 11 functions to reflect air that collides with said surface 11 in various directions, thus producing the same effect as described in the preceding paragraph, albeit with a smaller local effect, but on account of the dimension of the barrier wall 9 with sufficient effect for disturbing the air flow through the casing 7 to such an extent that the air within the casing will be exposed to the UV lamps for a longer period of time.
  • cone-shaped projection 12a, 12b, 12c which projects from the barrier wall 9 between the through-flow openings 8 in a direction opposite the direction of the flow of air through the casing 7.
  • Said cone- shaped projections may vary both as regards size and as regards shape, and likewise contribute towards the generation of turbulence in the casing 7.
  • the air that flows through the casing 7 will be exposed to the UV lamps longer also when this means is used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (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)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Cleaning In General (AREA)

Abstract

The present invention relates to an air cleaning device, comprising a housing formed with an air duct and having an air inlet and an air outlet, so that air containing contaminants can flow through the air duct to the air outlet via the air inlet, and at least one UV lamp disposed in the air duct for destroying at least part of the contaminants in the air that flows through the air duct past said at least one UV lamp, wherein at least one retardation element is provided in the air duct, which prolongs the residence time of air flowing through the air duct near said at least one UV lamp.

Description

Air cleaning device provided with a UV lamp.
DESCRIPTION
The present invention relates to an air cleaning device, comprising a housing formed with an air duct and having an air inlet and an air outlet, so that air containing contaminants can flow through the air duct to the air outlet via the air inlet, and at least one UV lamp disposed in the air duct for destroying at least part of the contaminants in the air that flows through the air duct past said at least one UV lamp. Such an air cleaning device is used as a range hood in kitchens, in particular industrial kitchens. The known range hood comprises a housing provided with an air inlet, through which air can be drawn from a kitchen into the housing by means of a fan. The interior of the housing forms an air duct, through which air drawn into the housing flows to an air outlet. A number of UV lamps are disposed in the air duct for destroying fats and the like. Air that passes the UV lamps is subsequently returned to the environment via the air outlet. The air outlet opens into the kitchen from where the air was withdrawn via the air inlet, or into a building of which the kitchen forms part.
The requirements regarding hygiene in particular in professional kitchens for restaurants and institutions are becoming increasingly stringent. Consequently, increasingly higher standards are being set regarding the effectiveness of range hoods that are used in such an environment. A drawback of the known range hood is that the range hood filters and destroys a large part of the fats and the like present in the air that flows through the air duct, to be true, but that a considerable amount of fats and the like still passes the UV lamps and flows out of the air duct via the air outlet. The provision of additional filters or UV lamps further downstream in the air flow has a relatively minor effect on the effectiveness of the range hood in proportion to the additional costs for adapting the air cleaning device and possibly the resulting higher energy consumption. Accordingly it is an object of the present invention to provide an air cleaning device as referred to in the introduction by means of which fats and the like can be removed from the air flowing through the air duct in a more effective manner. This object is accomplished by the present invention in that at least one retardation element is provided in the air duct, which prolongs the residence time of air flowing through the air duct near said at least one UV lamp. As a result, the air will be exposed to said at least one UV lamp for a longer period of time than in an air cleaning device not provided with a retardation element, so that a larger part of the fats and the like passing through the air duct will be destroyed by said at least one UV lamp. The embodiment of said at least one retardation element can be selected from a variety of embodiments, among which relatively simple, inexpensive solutions and more complex solutions, which may provide a higher degree of effectiveness.
It is preferable to dispose said at least one retardation element downstream of said at least one UV lamp in the air duct. As a result, the air flow will be blocked in part, such that air will accumulate in the duct in front of said at least one retardation element. This reduces the velocity at which the airflow, and thus the fat particles and the like being carried along in the airflow, passes said at least one UV lamp, thereby increasing the chance that a fat particle or the like will be exposed to the UV radiation long enough to be destroyed by said radiation. An additional effect is that the air, and thus also the fat particles and the like, around said at least one UV lamp is compressed as a result of the air flow being partially blocked downstream of said at least one UV lamp. As a result, the amount of fat particles and the like near said at least one UV lamp will increase, so that also the chance of destruction thereof will increase. In a preferred embodiment of the present invention, the retardation element comprises a baffle that partially blocks the air duct. A baffle is easy to mount in the air duct and capable of effectively retarding the air that flows through the air duct.
Preferably, said retardation element comprises a wall which shuts off the air duct for the greater part. Since the wall shuts off the air duct for the greater part, the air flow is slowed down to a significant extent and the direction of the air flow is partially reversed at the location of said wall. This increases the chance that a fat particle or the like present in the air flow will be exposed to said at least one UV lamp long enough to be destroyed. To prevent complete or undue blockage of the air flow through the air duct, the baffle that partially blocks the air duct or the wall that blocks the air duct for the greater part is provided with through-flow openings. The dimension of said through-flow openings can be selected in dependence on the use of the air cleaning device. In order to further enhance the effectiveness of said at least one UV lamp, said retardation element comprises at least one swirl element for generating turbulence in the air that flows through the air duct near the UV lamp. The turbulence generated in the air flow increases the chance that fat particles and the like present in the air flow will be exposed sufficiently long to said at least one UV lamp, so that they will be destroyed.
In a preferred embodiment of the present invention, said at least one swirl element is attached to the wall that blocks the air duct for the greater part. This makes it readily possible to install the swirl element in the air duct in one operation, in correct alignment with the wall in the air duct that blocks the air duct for the greater part. It is also possible, however, to provide separate swirl elements if a more desirable turbulence can thus be generated in an air flow through the air duct.
In a preferred embodiment of the present invention, a filter device is provided in the air duct upstream of said at least one UV lamp. In such an embodiment of the air cleaning device, the filter device can filter a first substantial part of the fat particles and the like present in the air from the air, after which said at least one UV lamp is used for destroying the fat particles and the like that have passed through the filter. The combination of a mechanical fat filter and UV lamps disposed downstream thereof has appeared to be very effective in practice. Because of the more effective way in which the UV lamps can do their destructive work, a highly effective filter is provided, for example for professional kitchens, also for the aforesaid combination of a filter and at least one UV lamp.
The present invention will now be explained, purely by way of illustration, on the basis of a description of an embodiment of the present invention, in which reference is made to figure 1.
Figure 1 is a schematic view of a range hood 1 according to the present invention, comprising a housing 2, an air inlet 3 and an air outlet 4. A (mechanical) filter 5 is provided in the range hood 1. Furthermore, a number of UV lamps 6 are provided in the housing 2 within a casing 7, which casing is fitted with a barrier wall 9 provided with through-flow openings 8 at a location further downstream in the air flow that flows through the range hood from the air inlet 3 to the air outlet 4. The casing is provided with means for slowing down the air flow and/or generating turbulence therein. Said means include a curve 10 in the barrier wall at the through- flow openings, a ribbed surface 11 of the barrier wall 9 between the through-flow openings 8 and a cone-shaped projection 12a, 12b, 12c projecting from the barrier wall 9 between the through-flow openings 8 in the opposite direction of the air flow. In the schematic view of figure 1 , different means are provided at different locations in the range hood 2, but each individual means can contribute to the intended effect of air turbulence in the housing 2 near the UV lamps.
The operation of the range hood in figure 1 is as follows. When the range hood 1 is in operation, a fan (not shown) draws air from outside the range hood 2 through the air inlet 3 into the range hood, through the (mechanical) filter, past the UV lamps 6, through the through-flow openings 8 to the air outlet 4. In this example the (mechanical) filter 5 is a so-called labyrinth filter, in which air that flows through the labyrinth filter is deflected by curved ducts in the labyrinth filter. Dirt or fat particles present in the air have a higher specific weight than the air in which they are present, so that they will experience a higher centrifugal force and, as a result of their slow deceleration, a smaller deflection, as a result of which a number of the dirt and fat particles will collide with walls of the labyrinth filter and remain behind on the walls of the labyrinth filter. Dirt and fat will be discharged by the labyrinth filter under the influence of the force of gravity, for example to a fat tray (not shown).
In practice the efficiency of existing mechanical filter devices has appeared to be insufficient for cleaning air in, for example, professional kitchens of restaurants and institutions. That is why a number of UV lamps 6 are provided downstream of the (mechanical) filter 5. Said UV lamps expose the air flowing through the casing 7 to UV radiation, the purpose being to destroy dirt and fat particles that have passed the (mechanical) filter 5 yet. The efficiency of the destruction of said dirt and fat particles depends inter alia on the duration of the radiation, the distance at which the dirt and fat particles pass the UV lamps and the intensity of the UV lamps. In order to positively influence a number of factors that affect the effectiveness of the UV lamps 6, a barrier wall 9 is provided close to the UV lamps, downstream of said UV lamps, which barrier wall 9 is provided with through-flow openings 8. The barrier wall 9 reduces the flow rate of the air flowing through the casing 7, so that dirt and fat particles will on average be exposed longer to the UV radiation of the UV lamps than in the situation in which such a barrier wall 9 is not provided. The barrier wall 9 is provided with a number of turbulence- generating means, which generate turbulence in part of the air flowing through the casing 7, so that the air will stay longer in the casing 7 so as to effect an even more prolonged exposure of dirt and fat particles to the UV lamps. A number of such means are shown in the embodiment of figure 1. Although different turbulence- generating means are provided at different locations between the through-flow openings 8 in the range hood one of figure 1 , one type or only a few different types of turbulence-generating elements will probably be used in practice. The variety of means shown in figure 1 only serves to illustrate different means in a figure.
One of the measures taken to effect turbulence in the air flow through the casing 7 is that the barrier wall 9 is slightly curved "inwards" around the through-flow openings 8, i.e. a profile directed against the flow of air through the casing 7 surrounds the through-flow openings 8. Apart from the fact that the air in question is slowed down, air flows in the opposite direction of the air flow around the through-flow openings 8, as a result of which part of said "fresh" air flow is opposed as well. As a result, swirls develop in the casing 7, so that air will be exposed to UV radiation from the UV lamps for a longer period of time than without the aforesaid measure.
Another example of turbulence-generating means is a ribbed surface 11 on (at least part of) the barrier wall. Said ribbed surface 11 functions to reflect air that collides with said surface 11 in various directions, thus producing the same effect as described in the preceding paragraph, albeit with a smaller local effect, but on account of the dimension of the barrier wall 9 with sufficient effect for disturbing the air flow through the casing 7 to such an extent that the air within the casing will be exposed to the UV lamps for a longer period of time.
Yet another means is a cone-shaped projection 12a, 12b, 12c, which projects from the barrier wall 9 between the through-flow openings 8 in a direction opposite the direction of the flow of air through the casing 7. Said cone- shaped projections may vary both as regards size and as regards shape, and likewise contribute towards the generation of turbulence in the casing 7. Thus, the air that flows through the casing 7 will be exposed to the UV lamps longer also when this means is used. The more often and the longer dirt and fat particles present in the air that flows through the casing 7 are exposed to the UV lamps, the greater the chance will be that the dirt and fat particles will be exposed to the UV lamps to such an extent that said exposure will result in the destruction of said particles. It will be understood that because of the provision of said means the air that flows through the through-flow openings 8 in the barrier wall 8 in the direction of the air outlet 4 of the range hood 1 will have a higher degree of purity than in the situation in which such a barrier wall provided with such means is not used. Thus, said retardation and said turbulence in the casing 7 help to obtain cleaner air without this necessarily leading to a noticeable increase in the operational costs (read: energy consumption). Another advantage is that the means in question can be provided in existing range hoods in a simple manner, especially if the range hood in question is already provided with UV lamps for destroying dirt and fat particles.
In the foregoing only one embodiment of the present invention has been discussed by way of example, and reference has been made to only one specific embodiment as shown in figure 1. It will be understood, however, that a person skilled in the art will readily be able to conceive equivalent or comparable measures for realising the same effect. Thus, several ways of slowing down the air flow in the air duct will be available to those of average skill in the art. In the figures and the description, means for generating swirls in the air flow are in all cases connected to other means that slow down the air flow. Swirl means can already effect a retardation of the air flow per se, and as such they are included in the retardation means mentioned herein. Thus the description and the figure must not be construed as limiting the scope of the present invention. The scope of the present invention is defined in the appended claims.

Claims

1. An air cleaning device, comprising a housing formed with an air duct and having an air inlet and an air outlet, so that air containing contaminants can flow through the air duct to the air outlet via the air inlet, and at least one UV lamp disposed in the air duct for destroying at least part of the contaminants in the air that flows through the air duct past said at least one UV lamp, characterised in that at least one retardation element is provided in the air duct, which prolongs the residence time of air flowing through the air duct near said at least one UV lamp.
2. An air cleaning device according to claim 1 , characterised in that said at least one retardation element is disposed downstream of said at least one UV lamp in the air duct.
3. An air cleaning device according to claim 1 or 2, characterised in that said retardation element comprises a baffle that partially blocks the air duct.
4. An air cleaning device according to claim 1 or 2, characterised in that said retardation element comprises a wall which shuts off the air duct for the greater part.
5. An air cleaning device according to claim 3 or 4, characterised in that the baffle that partially blocks the air duct or the wall that blocks the air duct for the greater part is provided with through-flow openings.
6. An air cleaning device according to any one or more of the preceding claims, characterised in that said retardation element comprises at least one swirl element for generating turbulence in the air that flows through the air duct near said at least one UV lamp.
7. An air cleaning device according to any one or more of the preceding claims 4-6, characterised in that said at least one swirl element is attached to the wall that blocks the air duct for the greater part.
8. An air cleaning device according to any one or more of the preceding claims, characterised in that a filter device is provided in the air duct upstream of said at least one UV lamp.
PCT/NL2007/000244 2006-09-29 2007-09-28 Air cleaning device provided with a uv lamp WO2008039064A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1032593A NL1032593C2 (en) 2006-09-29 2006-09-29 Air cleaning device with UV lamp.
NL1032593 2006-09-29

Publications (2)

Publication Number Publication Date
WO2008039064A2 true WO2008039064A2 (en) 2008-04-03
WO2008039064A3 WO2008039064A3 (en) 2008-05-15

Family

ID=38016825

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2007/000244 WO2008039064A2 (en) 2006-09-29 2007-09-28 Air cleaning device provided with a uv lamp

Country Status (2)

Country Link
NL (1) NL1032593C2 (en)
WO (1) WO2008039064A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2459242A1 (en) * 2014-03-21 2014-05-08 Wismok Esp Barcelona, S.L. Fat treatment system (Machine-translation by Google Translate, not legally binding)

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732501A (en) * 1956-01-24 Blaeker
US2824343A (en) * 1955-09-28 1958-02-25 James W Glass Germicidal device
US3105733A (en) * 1961-07-25 1963-10-01 Reginald Robbins Apparatus for sterilizing air
NL6918818A (en) * 1968-12-31 1970-07-02
DE1779019A1 (en) * 1968-06-28 1971-08-19 Licentia Gmbh Extractor hood
US3827862A (en) * 1972-08-10 1974-08-06 S Berlant Air curtain device incorporating ultraviolet light
WO1992020974A1 (en) * 1991-05-17 1992-11-26 Vertron International Pty. Limited Disinfectant system
WO1994008633A1 (en) * 1992-10-09 1994-04-28 National Jewish Center For Immunology And Respiratory Medicine Ultraviolet germicidal system
GB2314922A (en) * 1996-07-03 1998-01-14 Thermoscreens Ltd Apparatus for producing an air curtain
DE19949599A1 (en) * 1999-10-14 2001-04-19 Bsh Bosch Siemens Hausgeraete Extractor hood for kitchen extractor
US6500387B1 (en) * 2000-05-19 2002-12-31 Nukuest, Inc. Air actinism chamber apparatus and method
WO2003061717A1 (en) * 2002-01-16 2003-07-31 Vent Master (Europe) Limited Ultraviolet lamp ventilation apparatus and method
EP1365197A1 (en) * 2002-05-21 2003-11-26 Fujitsu General Limited Air conditioner
US20050000365A1 (en) * 2003-05-08 2005-01-06 Roger Nelsen System for purifying and removing contaminants from gaseous fluids
GB2404319A (en) * 2003-07-22 2005-01-26 John Se-Kit Yuen Air purifier combining a UV irradiator and a negative ion generator
WO2005018692A1 (en) * 2003-08-18 2005-03-03 Weigl, Lidia Device for sterilising an air flow by means of uv light
CA2539856A1 (en) * 2005-03-16 2006-09-16 Halton Company Corporation Fume treatment method and apparatus using ultraviolet light to degrade contaminants

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732501A (en) * 1956-01-24 Blaeker
US2824343A (en) * 1955-09-28 1958-02-25 James W Glass Germicidal device
US3105733A (en) * 1961-07-25 1963-10-01 Reginald Robbins Apparatus for sterilizing air
DE1779019A1 (en) * 1968-06-28 1971-08-19 Licentia Gmbh Extractor hood
NL6918818A (en) * 1968-12-31 1970-07-02
US3827862A (en) * 1972-08-10 1974-08-06 S Berlant Air curtain device incorporating ultraviolet light
WO1992020974A1 (en) * 1991-05-17 1992-11-26 Vertron International Pty. Limited Disinfectant system
WO1994008633A1 (en) * 1992-10-09 1994-04-28 National Jewish Center For Immunology And Respiratory Medicine Ultraviolet germicidal system
GB2314922A (en) * 1996-07-03 1998-01-14 Thermoscreens Ltd Apparatus for producing an air curtain
DE19949599A1 (en) * 1999-10-14 2001-04-19 Bsh Bosch Siemens Hausgeraete Extractor hood for kitchen extractor
US6500387B1 (en) * 2000-05-19 2002-12-31 Nukuest, Inc. Air actinism chamber apparatus and method
WO2003061717A1 (en) * 2002-01-16 2003-07-31 Vent Master (Europe) Limited Ultraviolet lamp ventilation apparatus and method
EP1365197A1 (en) * 2002-05-21 2003-11-26 Fujitsu General Limited Air conditioner
US20050000365A1 (en) * 2003-05-08 2005-01-06 Roger Nelsen System for purifying and removing contaminants from gaseous fluids
GB2404319A (en) * 2003-07-22 2005-01-26 John Se-Kit Yuen Air purifier combining a UV irradiator and a negative ion generator
WO2005018692A1 (en) * 2003-08-18 2005-03-03 Weigl, Lidia Device for sterilising an air flow by means of uv light
US20060037330A1 (en) * 2003-08-18 2006-02-23 Adolf Weigl Apparatus and method for the disinfection of an air conditioning installation of a stationary air conditioning system for buildings
CA2539856A1 (en) * 2005-03-16 2006-09-16 Halton Company Corporation Fume treatment method and apparatus using ultraviolet light to degrade contaminants

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2459242A1 (en) * 2014-03-21 2014-05-08 Wismok Esp Barcelona, S.L. Fat treatment system (Machine-translation by Google Translate, not legally binding)

Also Published As

Publication number Publication date
NL1032593C2 (en) 2008-04-01
WO2008039064A3 (en) 2008-05-15

Similar Documents

Publication Publication Date Title
US6290266B1 (en) Suction elbow provided with built-in guide blades
US7168427B2 (en) Air filtration and sterilization system for a fireplace
US20100051011A1 (en) Vent hood for a cooking appliance
KR101259586B1 (en) Local ventilator with swirler
RU2642942C1 (en) Fan unit
TW201814219A (en) Air treatment system
JP4867746B2 (en) Air conditioner
WO2019086471A1 (en) Air treatment device for a ventilation air inlet
KR102214731B1 (en) Air purge sterilization system
WO1992020974A1 (en) Disinfectant system
WO2008039064A2 (en) Air cleaning device provided with a uv lamp
KR100730358B1 (en) Ion diffusing apparatus
CN213810972U (en) Sterilizing elevator air purification device
CN200972193Y (en) Flue type oil fume purifier
WO2013005534A1 (en) Air conditioning apparatus
JP2005083650A (en) Ion diffuser
JP4311631B2 (en) Ion diffusion device
JP2011092897A (en) High performance labyrinth type air treatment apparatus
KR20220137440A (en) Cooling system of outdoor enclosure
CN217844250U (en) Malleation supply-air outlet with automatically cleaning structure
JP2002130759A (en) Range hood fan
JP6200679B2 (en) Microparticle diffusion device and illumination device
JP3159313U (en) High efficiency maze type air treatment device
KR200169174Y1 (en) Fan
JP2016183803A (en) Ventilation device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07834560

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07834560

Country of ref document: EP

Kind code of ref document: A2