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EP3967941B1 - Appareil d'aération technique et chambre - Google Patents

Appareil d'aération technique et chambre

Info

Publication number
EP3967941B1
EP3967941B1 EP20196089.5A EP20196089A EP3967941B1 EP 3967941 B1 EP3967941 B1 EP 3967941B1 EP 20196089 A EP20196089 A EP 20196089A EP 3967941 B1 EP3967941 B1 EP 3967941B1
Authority
EP
European Patent Office
Prior art keywords
air
ventilation device
light trap
radiation
channel
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP20196089.5A
Other languages
German (de)
English (en)
Other versions
EP3967941A1 (fr
Inventor
Ralf Wagner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LTG AG
Original Assignee
LTG AG
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 LTG AG filed Critical LTG AG
Priority to EP20196089.5A priority Critical patent/EP3967941B1/fr
Publication of EP3967941A1 publication Critical patent/EP3967941A1/fr
Application granted granted Critical
Publication of EP3967941B1 publication Critical patent/EP3967941B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/081—Air-flow control members, e.g. louvres, grilles, flaps or guide plates for guiding air around a curve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/065—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit fan combined with single duct; mounting arrangements of a fan in a duct

Definitions

  • the invention relates to an air handling device for a room of a building, comprising an air duct having an air inlet opening at one end and an air outlet opening at the other end, and an air conveying device for conveying an airflow from the air inlet opening to the air outlet opening through the air duct.
  • the invention relates to a room with such an air handling device.
  • Air handling devices of the type mentioned above are known from the prior art.
  • a recirculating air device typically has an air duct with an air inlet opening at one end and an air outlet opening at the other.
  • an air conveying device is also usually provided to convey an airflow from the air inlet opening to the air outlet opening through the air duct.
  • the air conveying device is thus designed to convey air from outside the device through the air inlet opening into the air duct and to convey air already present in the air duct out of the device through the air outlet opening.
  • Air handling devices of this type are known, each comprising a radiation source for providing ultraviolet radiation. Further air handling devices are described in the published patent applications. US 2007 0 297 951 A1 , DE 20 2020 103 371 U1 as well as CN 206 320 874 U known. The US 2007 0 297 951 A1 This discloses an air engineering device with the features of the preamble of claim 1.
  • the present invention is based on the objective of creating an air handling device that can reduce the burden of pathogens such as viruses or bacteria in the air of a room.
  • the air handling device is designed to have at least one radiation source for providing ultraviolet radiation, wherein the radiation source is positioned within the air duct such that the ultraviolet radiation provided by the radiation source is emitted into an irradiation section of the air duct, in particular into an irradiation section of the air duct that is limited with respect to the flow path through the air duct.
  • high-energy radiation such as ultraviolet radiation can inactivate pathogens such as viruses or bacteria if the radiation dose exceeds a threshold value specific to the respective pathogen.
  • the air handling device according to the invention utilizes this concept.
  • the radiation source or rather the emission of ultraviolet radiation into the irradiation section by means of the radiation source, inactivates at least some of the pathogens contained in the airflow.
  • the air conveying device is preferably arranged within the air duct.
  • the air handling unit is designed as an induction device or a fan.
  • a cross-flow fan is particularly preferred.
  • the use of a cross-flow fan enables high volume flows with very favorable noise characteristics.
  • the air handling unit is designed as a recirculating air unit.
  • the air inlet opening, the air outlet opening, and the air handling unit are designed such that the air handling unit, when installed in a room, creates mixed ventilation in the room during operation. This reduces the exposure to harmful substances in the room uniformly.
  • the air handling unit is designed or can be used as a ceiling, floor, or wall-mounted unit.
  • the preferably limited design of the irradiation section particularly reduces the proportion of ultraviolet radiation that can penetrate to the outside or into the room through the inlet and/or the air outlet opening.
  • the irradiation section begins—viewed in the direction of airflow—at a distance from the air inlet opening and ends at a distance from the air outlet opening.
  • the distances are preferably chosen such that the proportion of ultraviolet radiation penetrating to the outside is minimal.
  • the air duct is particularly preferably designed in such a way that direct escape of ultraviolet radiation into the environment, i.e., a direct optical connection from the irradiation source to the environment, the room, or the air inlet and outlet openings, is prevented.
  • direct irradiation of the airflow from the radiation source can preferably only occur within the irradiation section, with the following measures being taken within and adjacent to the irradiation section:
  • Adjacent sections of the air duct can also be indirectly irradiated by reflection of ultraviolet radiation off the duct walls.
  • the irradiation section is preferably defined by one or more bends, curves, and/or corners along the air duct, forming, for example, a flow-through labyrinth between the irradiation section and the air inlet opening, as well as between the irradiation section and the air outlet opening, but one through which ultraviolet radiation cannot penetrate.
  • the irradiation section is defined by the air duct's shape in such a way that even indirect ultraviolet radiation, i.e., radiation transmitted via reflection within the air duct, does not or hardly escapes from the air duct into the room or from the air inlet and/or outlet openings.
  • the air conveying device which is preferably controllable or adjustable with regard to its performance, ensures that the airflow, in particular the airflow velocity, can be optimally adjusted so that as many pathogens as possible are inactivated by irradiation in the irradiation section.
  • the radiation source is designed as a low-pressure UVC lamp.
  • a UVC lamp is understood to be a radiation source that provides ultraviolet radiation with a wavelength in the range of 100 nm to 280 nm. Ultraviolet radiation in this wavelength range is particularly suitable for inactivating viruses such as influenza viruses or coronaviruses with a high degree of efficiency.
  • the radiation source is arranged in the air duct such that the airflow surrounds it.
  • the radiation source thus extends at least partially through the air duct.
  • the radiation source is in direct contact with the airflow passing through the air duct during operation of the air handling unit or air conveying device. This achieves a particularly high efficiency with regard to the inactivation of the exciters contained in the airflow.
  • the radiation source is arranged outside the air duct.
  • a radiation guidance device is preferably provided, which directs the ultraviolet radiation provided by the radiation source into the irradiation section of the air duct.
  • the radiation source is preferably rod-shaped or U-shaped.
  • the radiation source is rod-shaped.
  • the rod-shaped or elongated form of the radiation source ensures a uniform distribution of radiation intensity within the Irradiation section reached. This leads to an advantageous utilization of the luminaire power for the inactivation of exciters, which ultimately further increases the efficiency with regard to the inactivation of exciters contained in the airflow.
  • the radiation source is arranged such that a longitudinal central axis of the radiation source, which is particularly rod-shaped, is oriented perpendicular to the longitudinal extent of the irradiation section.
  • the longitudinal central axis of the radiation source is understood to be the axis that runs parallel to the longitudinal extent of the radiation source and through its center.
  • the longitudinal extent of the irradiation section corresponds to the flow direction of the airflow guided through the air duct from the air inlet to the air outlet within the irradiation section.
  • the longitudinal central axis of the radiation source is oriented perpendicular to the longitudinal extent and thus parallel to a cross-sectional area of the irradiation section.
  • the arrangement of the radiation source described above achieves an optimal, symmetrical radiation intensity distribution along the entire cross-sectional area of the irradiation section. This also ultimately further increases the efficiency with regard to the inactivation of the exciters contained in the airflow. Furthermore, the presence of the radiation source ensures that no or only minimal turbulence is introduced into the airflow.
  • the irradiation section has a rectangular cross-section. The cross-section is defined by the width and height of the irradiation section.
  • the radiation source is arranged such that its longitudinal axis is aligned with the width of the irradiation section, with the length of the radiation source then preferably corresponding at least substantially to the width of the irradiation section.
  • the air handling unit has at least one additional radiation source for providing ultraviolet radiation, wherein the additional radiation source is arranged in the air duct such that the ultraviolet radiation provided by the additional radiation source radiates into the irradiation section, in particular into the limited irradiation section.
  • the additional radiation source By providing the additional radiation source, the total amount of ultraviolet radiation provided is increased, and a particularly optimal, symmetrical radiation intensity distribution is also achieved.
  • the features disclosed above with regard to the radiation source are preferably also implemented in the additional radiation source.
  • the radiation source and the additional radiation source are particularly preferred. Radiation sources are arranged one after the other in the irradiation section, in the direction of airflow.
  • the second radiation source is also rod-shaped and, for example, aligned or arranged parallel to the first radiation source.
  • two radiation sources arranged parallel to each other are connected at their free ends or merge into one another to form the aforementioned U-shaped radiation source.
  • the rod-shaped radiation sources are each oriented transversely to the direction of airflow or longitudinal extent of the air duct in the irradiation section and transversely, and in particular perpendicularly, to each other.
  • At least one channel wall of the air duct in the irradiation section are designed to reflect ultraviolet radiation.
  • the channel walls of the air duct in the irradiation section are the walls that delimit the air duct in the irradiation section and thus define its cross-section. If the irradiation section has, for example, a rectangular cross-section, the air duct in the irradiation section has four channel walls accordingly.
  • At least one channel wall of the air duct in the irradiation section is designed to reflect ultraviolet radiation and thus exhibits a reflective effect. This reflective effect further increases the efficiency of inactivating the exciters.
  • the reflective effect results in a particularly optimal, symmetrical radiation intensity distribution.
  • ultraviolet radiation incident on the channel wall is not lost, or only minimally lost, through absorption, but remains available to inactivate the exciters after reflection from the channel wall.
  • the at least one channel wall is designed to reflect at least 65%, preferably at least 90%, of the ultraviolet radiation incident on it.
  • the channel wall is coated with or made of an ultraviolet-reflective material to achieve this reflective effect.
  • the ultraviolet-reflective material is preferably an aluminum alloy, particularly preferably anodized aluminum.
  • the channel wall is provided with a special coating that, for example, further increases the reflective effect of the channel wall and/or is advantageous for other properties of the channel wall, such as its corrosion resistance.
  • the air duct between the irradiation section and the air inlet opening has a first light trap
  • the air duct between the irradiation section and the air outlet opening has a second light trap.
  • a light trap is understood to be a section of the air duct that blocks or at least reduces the propagation of ultraviolet radiation.
  • a light trap has a blocking effect on ultraviolet radiation and, in particular, forms the aforementioned flowable but not irradiable labyrinth.
  • the first light trap is arranged between the irradiation section and the air inlet opening and thus blocks or reduces the emission of ultraviolet radiation through the air inlet opening.
  • the second light trap is arranged between the irradiation section and the air outlet opening and thus blocks or reduces the emission of ultraviolet radiation through the air outlet opening.
  • At least one channel wall of the air duct in the region of the first light trap and/or in the region of the second light trap, and preferably all channel walls of the air duct in the region of the first light trap and/or in the region of the second light trap are designed to absorb ultraviolet radiation.
  • the blocking effect provided by the light traps is thus achieved or enhanced, at least partially, by the fact that the light traps have an absorption function with respect to ultraviolet radiation.
  • the affected channel wall absorbs at least 50%, more preferably at least 80%, and particularly preferably 100% of the ultraviolet radiation incident on the channel wall.
  • the channel wall is coated with an ultraviolet-absorbing material to achieve this absorption function.
  • An absorbing surface coating for example, a black surface coating, is particularly preferred.
  • the channel wall is preferably made of an ultraviolet-absorbing material to achieve this absorption function.
  • the air duct for forming the first light trap has a first bend
  • the air duct for forming the second light trap has a second bend.
  • the provision of the first bend achieves a simple structural advantage. The measures reliably prevent the direct emission of ultraviolet radiation through the air inlet opening, i.e., emission without first striking a duct wall.
  • the provision of the second bend prevents the direct emission of ultraviolet radiation through the air outlet opening.
  • the first and second bends are 180° bends. The first and second bends deflect the airflow in the area of the first and second light traps, respectively.
  • the duct wall outside the bend has a circular arc-shaped longitudinal section in the area of the first light trap. This ensures low-turbulence airflow through the first light trap. The same preferably applies to the duct wall outside the bend in the area of the second light trap.
  • the air duct between the air inlet opening and the first light trap includes an air supply chamber.
  • the air supply chamber ensures a uniform flow of air into the first light trap or the irradiation section.
  • the air duct between the air outlet opening and the second light trap includes an air discharge chamber. When the airflow exits the second light trap, it first passes into the air discharge chamber before reaching the air outlet opening. The air discharge chamber ensures a uniform outflow of air from the second light trap or the irradiation section.
  • At least one channel wall of the air duct in the area of the air supply chamber is designed to absorb ultraviolet radiation.
  • the channel wall is coated with or made of an ultraviolet-absorbing material to achieve the absorption function.
  • all channel walls of the air duct in the area of the air supply chamber are designed to absorb ultraviolet radiation.
  • At least one channel wall of the air duct in the area of the air discharge chamber is designed to absorb ultraviolet radiation.
  • the channel wall is coated with or made of an ultraviolet-absorbing material to achieve the absorption function.
  • Particularly preferred are all The duct walls of the air duct in the area of the air discharge chamber are designed to absorb ultraviolet radiation.
  • the air handling device has at least one air guide element that extends through the air duct in the region of the first light trap.
  • An air guide element is understood to be an element that is present in addition to the duct walls and projects into the air duct.
  • the provision of the air guide element improves the airflow in the region of the first light trap, resulting in a particularly uniform flow and minimizing pressure losses.
  • the air guide element increases the number of surfaces that the ultraviolet radiation can strike in the region of the first light trap.
  • the air guide element optimizes the blocking effect of the first light trap. Therefore, the air guide element that extends through the air duct in the region of the first light trap is a component of the first light trap.
  • the air handling device has several air guide elements that extend through the air duct in the region of the first light trap.
  • the air handling device has at least one air guide element extending through the air duct in the region of the second light trap.
  • the air handling device has several air guide elements extending through the air duct in the region of the second light trap.
  • the first light trap and the second light trap are designed to be mirror images of each other.
  • At least one of the air guide elements is designed to absorb ultraviolet radiation. This further optimizes the blocking effect of the first or second light trap.
  • the air guide element is coated with or made of an ultraviolet-absorbing material to achieve this absorption function.
  • At least one of the air guide elements has a circular arc-shaped longitudinal section.
  • This design of the air guide element results in a particularly uniform or laminar airflow.
  • the air guide element with the circular arc-shaped longitudinal section is designed as a circular arc profile.
  • the air guide element with the circular arc-shaped longitudinal section is preferably manufactured from several individual pieces, such as straight sections or polygons.
  • the air handling device comprises at least a first air guide element with a circular arc-shaped longitudinal section and a second air guide element with a circular arc-shaped longitudinal section, wherein the radius of the circular arc shape of the first air guide element is larger than the radius of the circular arc shape of the second air guide element, wherein the bulges of the circular arc shapes of the air guide elements point in the same direction, and wherein the second air guide element is arranged in a circular segment defined by the circular arc shape of the first air guide element and spaced apart from the first air guide element.
  • ultraviolet radiation entering the flow path between the first and the second air guide elements is reflected multiple times from one of the air guide elements to the other. This increases the blocking effect of the light trap, of which the first and the second air guide elements are components.
  • the first and second air guide elements are arranged concentrically. This concentric arrangement results in the flow path formed between them having a constant cross-section in the flow direction.
  • the first and second air elements are part of the first light trap.
  • the concentric arrangement is particularly advantageous from a fluid dynamics perspective if the cross-section of the irradiation section corresponds at least substantially to the cross-section of the air supply chamber.
  • the first and second air guide elements are part of the second light trap, a corresponding fluid dynamics advantage arises if the cross-section of the irradiation section corresponds at least substantially to the cross-section of the air discharge chamber.
  • the first and second air guide elements are arranged eccentrically relative to each other.
  • This eccentric arrangement causes the cross-section of the flow path formed between the first and second air guide elements to change in the flow direction.
  • this eccentric arrangement is particularly advantageous when the cross-section of the irradiation section differs from the cross-section of the air supply chamber or the cross-section of the air discharge chamber.
  • the first and second air guide elements as components of the first light trap, are preferably arranged relative to each other in such a way. arranged eccentrically, such that the cross-section of the flow path formed between the first and second air guide elements increases in the direction of flow.
  • the air supply chamber, the irradiation section (or irradiation chamber), and the air exhaust chamber are arranged parallel to each other in the direction of airflow.
  • the chambers are thus positioned side by side and fluidically connected in such a way that parallel airflow paths are formed through the chambers.
  • the air supply chamber, the irradiation chamber, and the air exhaust chamber are of the same length in the direction of airflow, or at least substantially the same length, thus providing a compact and stable design for the air handling unit.
  • the air handling unit is designed as a single unit or module.
  • the features described above are integrated within this unit and can be handled together as a single unit, thus enabling, for example, easy assembly and advantageous transport of the device.
  • the air handling unit is not designed as a single unit but as an air handling system constructed from individual modules.
  • Each of the individual modules realizes a section of the air duct as described above in various embodiments.
  • the air supply chamber, the air exhaust chamber, the irradiation chamber, the respective light trap, and the conveying device are each formed by a separate individual module, which are connected or connectable to one another directly or indirectly, i.e., by means of further fluidic and/or mechanical connections. This offers the advantage of a flexible design for the air handling unit to be installed in or on the room of a building.
  • the installer can, for example, decide on-site how the individual modules should be arranged relative to one another to achieve the best possible effect for the room.
  • the room according to the invention is characterized by at least one air handling unit as described above. This results in the advantages for the room already mentioned in connection with the air handling unit.
  • the air handling unit is arranged in the room as a recirculating air unit in such a way that both the air inlet opening and the air outlet opening open into the room.
  • Figure 1 shows an exemplary embodiment of an advantageous air handling device 1 in a perspective view.
  • the air handling device 1 has a multi-part housing 2, the parts of which are configured to jointly define an air duct 3, which has an air inlet opening at one end and an air outlet opening at the other.
  • the air handling device 1 also has an air conveying device 4 for conveying an airflow from the air inlet opening to the air outlet opening through the air duct 3.
  • the air conveying device 4 is a cross-flow fan 4 arranged in the air duct 3.
  • FIG 2 shows another perspective view of the air handling unit 1. As seen from Figure 2 As can be seen, the air inlet opening 5 and the air outlet opening 6 are formed in an outlet plate 7, which is part of the multi-part housing 2.
  • the air handling unit 1 is designed to be installed as a recirculating air unit in a suspended ceiling of a room.
  • the outlet plate 7 is flush with a suspended ceiling of the suspended ceiling, so that the air inlet opening 5 and the Air outlet 6 opens into the room.
  • room air is drawn into the air duct 3 through the air inlet 5.
  • the drawn-in room air flows through the air duct 3 as an airflow and is finally blown out of the air duct 3 through the air outlet 6.
  • the air inlet 5, the air outlet 6, and the air conveying device 4 are designed such that the air handling unit 1, during operation, creates a mixing ventilation effect in the room.
  • the air handling unit 1 is designed, for example, to be installed in a suspended floor of a room.
  • the air handling unit 1 is designed to be arranged on a ceiling, floor, or wall/side wall of a room such that the air handling unit 1 is fluidically connected to the room and/or projects into the room.
  • the air handling unit 1 is designed to be installed as a stand-alone unit in a room. The inlet and outlet openings are then designed or arranged differently in the aforementioned variants.
  • Figure 3 shows a cross-sectional view of the in the Figure 1 and 2
  • the direction of flow of the air handling device 1 shown is shown by arrows 9.
  • the direction of flow of the airflow from the air inlet opening 5 to the air outlet opening 6 through the air duct 3 is shown by arrows 9.
  • the air duct 3 has an irradiation section 10 or an irradiation chamber 10.
  • the irradiation section 10 is cuboid in shape.
  • the cuboid shape is defined by a length 1, a height h and a Figure 3
  • the width b which is not visible, runs perpendicular to the height h and the length 1.
  • the airflow in the irradiation section 10 flows in the longitudinal direction of the irradiation section 10.
  • the cross-section of the irradiation section 10 is defined by the height h and the width b.
  • a radiation source 11 for providing ultraviolet radiation is arranged such that the radiation source 11 is surrounded by the airflow during operation of the air handling unit 1. Accordingly, ultraviolet radiation provided by the radiation source 11 is emitted into the irradiation section 10.
  • the radiation source 11 is a low-pressure UVC lamp 11.
  • pathogens such as viruses or bacteria, which are present in the air handling unit 1 are eliminated by the UVC lamp 11.
  • the airflow contained in the air duct 3 is inactivated by the ultraviolet radiation emitted into the irradiation section 10. Therefore, the concentration of pathogens in the room air can be reduced by means of the air handling unit 1.
  • the radiation source 11 is rod-shaped or elongated.
  • the radiation source 11 is arranged in the irradiation section 10 such that its longitudinal axis is aligned with the width of the irradiation section 10. Therefore, the longitudinal axis of the radiation source 11 is perpendicular to the length of the irradiation section 10, i.e., perpendicular to the flow direction 9 within the irradiation section 10, and perpendicular to the height of the irradiation section 10.
  • the longitudinal extent of the radiation source 11 corresponds at least substantially to the width b of the irradiation section 10. Therefore, the radiation source 11 emits ultraviolet radiation into the irradiation section 10 across its entire width b.
  • the radiation source 11 is positioned centrally within the irradiation section 10 with respect to its height h.
  • the design and arrangement of the radiation source 11 described above achieves an optimal, symmetrical distribution of ultraviolet radiation intensity in the irradiation section 10, which is advantageous for the inactivation of pathogens.
  • the air handling unit 1 also features an optional additional radiation source 11A for providing ultraviolet radiation.
  • This additional radiation source 11A is also arranged in the air duct 3, or irradiation section 10, such that the airflow surrounds it during operation of the air handling unit 1.
  • ultraviolet radiation provided by the additional radiation source 11A also radiates into the irradiation section 10.
  • the inclusion of this additional radiation source 11A increases the efficiency with which any exciters present in the airflow are inactivated.
  • the additional radiation source 11A is also rod-shaped or elongated, and its longitudinal axis is aligned with the width of the irradiation section 10.
  • the additional radiation source 11A is positioned centrally within the irradiation section 10 with respect to its height h. With respect to the flow direction 9, the additional radiation source 11A is arranged downstream of the radiation source 11. According to further embodiments, other arrangements of the radiation sources 11 and 11A are provided with respect to the height h of the irradiation section 10 and its length.
  • the radiation sources 11, 11A are arranged vertically one above the other, i.e., at the same height when viewed in the direction of flow 9.
  • the distance of one of the radiation sources 11 or 11A from the channel wall 12 is one quarter of the height h of the irradiation section 10
  • the distance of the other radiation source 11A or 11 from the channel wall 13 is one quarter of the height h of the irradiation section 10.
  • the additional radiation source 11A is omitted, so that only the radiation source 11 is present.
  • Irradiation section 10 is bounded by several channel walls. These are in Figure 3 Only the channel walls 12 and 13, which define the vertical boundary of the irradiation section 10, are visible, but not the channel walls defining the horizontal boundary of the irradiation section 10. At least the channel walls 12 and 13 are designed to reflect ultraviolet radiation. For this purpose, the side 14 of the channel wall 12 facing the irradiation section 10 and the side 15 of the channel wall 13 facing the irradiation section 10 have a coating made of an ultraviolet-reflecting material. Due to the coating, ultraviolet radiation incident on sides 14 and 15 is reflected. This optimizes the radiation intensity distribution in the irradiation section 10. Alternatively, instead of the coating, the channel walls 12 and 13 are preferably made of an ultraviolet-reflecting material.
  • the air duct 3 also has a first light trap 16 arranged between the irradiation section 10 and the air inlet opening 5.
  • the first light trap 16 is thus arranged upstream of the irradiation section 10.
  • the first light trap 16 is designed to block the passage of ultraviolet radiation.
  • the first light trap 16 prevents ultraviolet radiation provided by the radiation source 11 from reaching the air inlet opening 5 and exiting the air duct 3 through the air inlet opening 5.
  • the first light trap 16 therefore has a blocking effect on ultraviolet radiation.
  • a channel wall 17 of the channel 3, which bounds the first light trap 16, is curved such that the air channel 3 has a first bend 18 in the region of the first light trap 16.
  • the bend is 180°. Accordingly, the airflow in the region of the first light trap 16 is deflected by 180°.
  • the first bend 18 prevents direct emission of ultraviolet radiation through the air inlet opening 5.
  • the curved channel wall 17, due to the first bend 18, also forms the first light trap 16.
  • the channel wall 17 is designed to absorb ultraviolet radiation.
  • the channel wall 17 has a A coating made of an ultraviolet radiation-absorbing material is applied. When ultraviolet radiation strikes the channel wall 17, it is at least partially absorbed. Accordingly, at most a portion of the ultraviolet radiation striking the channel wall 17 is reflected.
  • the ultraviolet radiation-absorbing coating of the channel wall 17 therefore also contributes to the blocking effect of the first light trap 16.
  • the first light trap 16 also has several, in this case two, air guide elements 19 arranged in the air duct 3, each having a circular arc-shaped longitudinal section.
  • the air guide elements 19 optimize the guidance of the airflow with regard to a flow that is as uniform and as low in turbulence as possible in the area of the first light trap 16.
  • the air guide elements 19 also have a coating made of an ultraviolet radiation-absorbing material and are thus designed to absorb ultraviolet radiation.
  • the shape and arrangement of the air guide elements 19 will be described later with reference to the Figures 4 and 5 explained in more detail.
  • the air duct 3 also has an air supply chamber 20 arranged between the first light trap 16 and the air inlet opening 5.
  • the air supply chamber 20 is thus located upstream of the first light trap 16. Accordingly, air entering the air duct 3 through the air inlet opening 5 first passes into the air supply chamber 20.
  • the provision of the air supply chamber 20 ensures a uniform flow of air into the first light trap 16.
  • the air supply chamber 20 is bounded vertically by the outlet plate 7 on one side and by the duct wall 13 on the other.
  • the side 21 of the duct wall 13 facing the air supply chamber 20 and the side 22 of the outlet plate 7 facing the air supply chamber 20 are designed to absorb ultraviolet radiation. These pages 21 and 22 also have a coating made of an ultraviolet radiation-absorbing material.
  • the air duct 3 also has a second light trap 23 arranged between the irradiation section 10 and the air outlet opening 6.
  • the second light trap 23 is thus arranged downstream of the irradiation section 10.
  • the second light trap 23 essentially corresponds to the first light trap 16 in terms of its design.
  • the air duct 3 has a duct wall 24 bounding the second light trap 23, which is curved such that the air duct 3 has a second bend 25 in the area of the second light trap 23.
  • the second light trap 23 also has several air guide elements 26 arranged in the air duct 3, each having a circular arc-shaped longitudinal section.
  • the duct wall 24 and the air guide elements 26 also have a coating of an ultraviolet radiation-absorbing material.
  • the first light trap 16 and the second light trap 23 are mirror images of each other.
  • the air duct 3 also has an air discharge chamber 27 located between the second light trap 23 and the air outlet opening 6.
  • the air discharge chamber 27 is thus located downstream of the second light trap 23. Accordingly, air exiting the second light trap 23 first enters the air discharge chamber 27.
  • the provision of the air discharge chamber 27 ensures a uniform discharge of the airflow from the irradiation chamber 10 and from the second light trap 23.
  • the air discharge chamber 27 is bounded vertically on one side by the duct wall 12 and on the other side by a duct wall 28.
  • the side 29 of the duct wall 12 facing the air discharge chamber 27 and the side 30 of the duct wall 28 facing the air discharge chamber 27 are designed to absorb ultraviolet radiation. For this purpose, these sides 29 and 30 also have a coating of an ultraviolet-absorbing material.
  • the air supply chamber 20, the first light trap 16, and the irradiation section 10 are jointly formed in a C-shape. This results in a particularly compact design of the air handling unit 1. This is primarily due to the fact that the irradiation section 10 and the air supply chamber 20 are bounded by a common channel wall, namely the channel wall 13. One side 15 of the channel wall 13 bounds the irradiation section 10, and the other side 21 of the channel wall 13 bounds the air supply chamber 20.
  • the irradiation section 10, the second light trap 23, and the air extraction chamber 27 are all C-shaped. This also contributes to a particularly compact design of the air handling unit 1. This is primarily due to the fact that the irradiation section 10 and the air extraction chamber 27 are bounded by a common channel wall, namely the channel wall 12. One side 14 of the channel wall 12 borders the irradiation section 10, and the other side 29 of the channel wall 12 borders the air extraction chamber 27.
  • FIG 4 Two further sectional views of the air handling unit 1 are shown.
  • the left sectional view A shows the direction of airflow 9 in the area of the first light trap 16.
  • the right sectional view B shows, by way of example, the path of supplied ultraviolet radiation in the area of the first light trap 16.
  • the depicted air handling unit 1 differs from the one shown in Figure 3 The depicted air handling unit 1 with regard to the number of air guide elements 19.
  • the in Figure 4 The device 1 shown has four air guide elements 19, namely a first air guide element 19A, a second air guide element 19B, a third air guide element 19C and a fourth air guide element 19D.
  • the air guide elements 19 each have a longitudinal section shaped like a circular arc.
  • the arc shapes of the air guide elements 19 have the same angle, namely an angle of 180°.
  • the radius of the arc shape of the first air guide element 19A is larger than the radius of the arc shape of the second air guide element 19B.
  • the radius of the arc shape of the second air guide element 19B is larger than the radius of the arc shape of the third air guide element 19C.
  • the radius of the arc shape of the third air guide element 19C is larger than the radius of the arc shape of the fourth air guide element 19D.
  • the air guide elements 19 are aligned or arranged such that the protrusions 31A, 31B, 31C and 31D of the circular arc shapes of the air guide elements 19 point in the same direction.
  • the circular arc shape of the first air guide element 19A defines a first circular segment.
  • the second air guide element 19B is spaced apart from the first air guide element 19A and arranged within the first circular segment.
  • the circular arc shape of the second air guide element 19B defines a second circular segment.
  • the third air guide element 19C is spaced apart from the second air guide element 19B and arranged within the second circular segment.
  • the circular arc shape of the third air guide element 19C defines a third circular segment.
  • the fourth air guide element 19D is spaced apart from the third air guide element 19C and arranged within the third circular segment.
  • the air guide elements 19 are arranged or designed such that the first ends 32 of the air guide elements 19 facing the radiation source 11 are at the same height when viewed in the direction of flow 9.
  • the air guide elements 19 are also arranged or designed such that the second ends 33 of the air guide elements 19 facing away from the radiation source 11 are at the same height when viewed in the direction of flow 9.
  • a flow path 34 for the airflow is formed between two adjacent air guide elements 19 and between the first air guide element 19A and the channel wall 17.
  • the height h of the irradiation section 10 corresponds at least substantially to the height h' of the air supply chamber 20.
  • the air guide elements 19 are arranged concentrically. This results in each of the flow paths 34 having a constant cross-section in the flow direction 9.
  • the following section with reference to the right-hand cross-sectional view B, explains the path of ultraviolet radiation in the region of the first light trap 16.
  • ultraviolet radiation enters one of the flow paths 34, it is reflected multiple times between the air guide elements that define the flow path. Due to the coating of the air guide elements 19, the intensity of the ultraviolet radiation decreases with each impact on one of the air guide elements 19. For example, if ultraviolet radiation enters the flow path 34 formed between the first air guide element 19A and the second air guide element 19B according to the radiation path 35, the ultraviolet radiation first strikes the first air guide element 19A at a point P1. Here, the ultraviolet radiation is partially absorbed, so that only a portion of the ultraviolet radiation is reflected back towards the second air guide element 19B.
  • the number of reflections that the ultraviolet radiation undergoes while passing through one of the flow paths 34 is defined in particular by the width of the flow path 34 or the distance between the air guide elements 19 that define the flow path 34. The smaller the width of the flow path or the distance between the air guide elements 19, the greater the number of reflections.
  • FIG 5 Two sectional views of the air handling unit 1 according to a further embodiment are shown.
  • the left sectional view C shows the flow direction 9 of the airflow in the area of the first light trap 16.
  • the right sectional view D shows, by way of example, the path of ultraviolet radiation in the area of the first light trap 16.
  • the height h of the irradiation section 10 differs from the height h' of the air supply chamber 20.
  • the height h is greater than the height h'.
  • the air guide elements 19 are arranged eccentrically such that the distance between the first ends 32 of two adjacent air guide elements 19 is greater than the distance between the second ends 33 of the same air guide elements 19. This results in an increase in the cross-section of the flow paths 34 in the flow direction 9.
  • the air handling device 1 described here is therefore a particularly easy-to-handle and easy-to-assemble unit, which is enclosed and designed in particular by the housing 2.
  • the device 1 is assembled as an air handling unit from several individual modules, each module comprising one or more of the above-described features such as a light trap, an irradiation chamber, an air supply or exhaust chamber, or an air conveying device.
  • the individual modules can be directly connected to one another fluidically and mechanically, or with the aid of further intermediate modules or parts, through which two individual modules following one another in the direction of flow are connected. This allows, for example, the installer to arrange and connect the individual modules in a suitable manner on-site during assembly.

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

Claims (20)

  1. Appareil d'aération technique (1) pour une pièce d'un bâtiment, comprenant un conduit d'air (3) qui présente une ouverture d'entrée d'air (5) au niveau d'une extrémité et une ouverture de sortie d'air (6) au niveau de l'autre extrémité, comprenant un dispositif de transport d'air (4) pour transporter un flux d'air guidé à travers le conduit d'air depuis l'ouverture d'entrée d'air (5) jusqu'à l'ouverture de sortie d'air (6), et comprenant au moins une source de rayonnement (11) pour fournir un rayonnement ultraviolet, dans lequel la source de rayonnement (11) est associée au conduit d'air (3) de telle sorte que le rayonnement ultraviolet fourni par la source de rayonnement (11) est émis dans une section d'irradiation (10) du conduit d'air (3), dans lequel le conduit d'air (3) entre la section d'irradiation (10) et l'ouverture d'entrée d'air (5) présente un premier piège à lumière (16) pour bloquer ou réduire la propagation du rayonnement ultraviolet, dans lequel le conduit d'air (3) entre la section d'irradiation (10) et l'ouverture de sortie d'air (6) présente un second piège à lumière (23) pour bloquer ou réduire la propagation du rayonnement ultraviolet, dans lequel le conduit d'air (3) présente un premier coude (18) pour former le premier piège à lumière (16), et dans lequel le conduit d'air (3) présente un second coude (25) pour former le second piège à lumière (23), caractérisé par au moins un premier élément de guidage d'air (19, 19A) avec une section longitudinale d'arc circulaire et un second élément de guidage d'air (19, 19B) avec une section longitudinale de forme d'arc circulaire, dans lequel les éléments de guidage d'air (19, 19A, 19B) s'étendent dans la zone du premier piège à lumière (16) à travers le conduit d'air (3), dans lequel le rayon de la forme d'arc circulaire du premier élément de guidage d'air (19, 19A) est supérieur au rayon de la forme d'arc circulaire du second élément de guidage d'air (19, 19B), dans lequel les bombements (31A, 31B) des formes d'arc circulaire des éléments de guidage d'air (19, 19A, 19B) sont orientés dans la même direction, dans lequel le second élément de guidage d'air (19, 19B) est disposé dans un segment circulaire défini par la forme d'arc circulaire du premier élément de guidage d'air (19, 19A) et à distance du premier élément de guidage d'air (19, 19A), et dans lequel les formes d'arc circulaire des éléments de guidage d'air (19, 19A, 19B) ainsi que le premier coude (18) et le second coude (25) forment chacun un angle de 180°.
  2. Appareil d'aération technique selon la revendication 1, caractérisé en ce que la source de rayonnement (11) est conçue comme une lampe UVC à basse pression (11).
  3. Appareil d'aération technique selon l'une des revendications précédentes, caractérisé en ce que la source de rayonnement (11) est disposée dans le conduit d'air (3) de telle sorte que le flux d'air circule autour de la source de rayonnement (11).
  4. Appareil d'aération technique selon l'une des revendications précédentes, caractérisé en ce que la source de rayonnement (11) est conçue sous forme de barre.
  5. Appareil d'aération technique selon l'une des revendications précédentes, caractérisé en ce que la source de rayonnement (11) est disposée de telle sorte qu'un axe longitudinal de la source de rayonnement (11) est orienté perpendiculairement à l'extension longitudinale de la section d'irradiation (10).
  6. Appareil d'aération technique selon l'une des revendications précédentes, caractérisé par au moins une autre source de rayonnement (11A) prévue pour fournir un rayonnement ultraviolet, dans lequel l'autre source de rayonnement (11A) est associée au conduit d'air (3) de telle sorte que le rayonnement ultraviolet fourni par l'autre source de rayonnement (11A) rayonne dans la section d'irradiation (10).
  7. Appareil d'aération technique selon l'une des revendications précédentes, caractérisé en ce qu'au moins une paroi (12, 13) du conduit d'air (3) dans la section d'irradiation (10), de préférence toutes les parois (12, 13) du conduit d'air (3) dans la section d'irradiation (10), est conçue ou sont conçues pour réfléchir le rayonnement ultraviolet.
  8. Appareil d'aération technique selon l'une des revendications précédentes, caractérisé en ce qu'au moins une paroi (17, 24) du conduit d'air (3) dans la zone du premier piège à lumière (16) et/ou dans la zone du second piège à lumière (23), de préférence toutes les parois (17, 24) du conduit d'air (3) dans la zone du premier piège à lumière (16) et/ou dans la zone du second piège à lumière (23) est conçue ou sont conçues pour absorber le rayonnement ultraviolet.
  9. Appareil d'aération technique selon l'une des revendications précédentes, caractérisé en ce que le conduit d'air (3) entre l'ouverture d'entrée d'air (5) et le premier piège à lumière (16) présente une chambre d'amenée d'air (20), et/ou le conduit d'air (3) entre l'ouverture de sortie d'air (6) et le second piège à lumière (23) présente une chambre d'évacuation d'air (27).
  10. Appareil d'aération technique selon la revendication 9, caractérisé en ce qu'au moins une paroi (13, 7) du conduit d'air (3) dans la zone de la chambre d'amenée d'air (20), de préférence toutes les parois (13, 7) du conduit d'air (3) dans la zone de la chambre d'amenée d'air (20), est conçue ou sont conçues pour absorber le rayonnement ultraviolet.
  11. Appareil d'aération technique selon l'une des revendications 9 et 10, caractérisé en ce qu'au moins une paroi (12, 28) du conduit d'air (3) dans la zone de la chambre d'évacuation d'air (27), de préférence toutes les parois (12, 28) du conduit d'air (3) dans la zone de la chambre d'évacuation d'air (27), est conçue ou sont conçues pour absorber le rayonnement ultraviolet.
  12. Appareil d'aération technique selon l'une des revendications précédentes, caractérisé en ce qu'au moins un élément de guidage d'air (26) est déployé dans la zone du second piège à lumière (23) à travers le conduit d'air (3).
  13. Appareil d'aération technique selon l'une des revendications précédentes, caractérisé en ce que l'élément de guidage d'air (19, 26) est conçu pour absorber le rayonnement ultraviolet.
  14. Appareil d'aération technique selon la revendication 12, caractérisé en ce que l'élément de guidage d'air (26) présente une section longitudinale de forme d'arc circulaire.
  15. Appareil d'aération technique selon l'une des revendications précédentes, caractérisé en ce que le premier élément de guidage d'air (19A) et le second élément de guidage d'air (19B) sont disposés de manière concentrique l'un par rapport à l'autre.
  16. Appareil d'aération technique selon l'une des revendications précédentes, caractérisé en ce que le premier élément de guidage d'air (19A) et le second élément de guidage d'air (19B) sont disposés de manière excentrique l'un par rapport à l'autre.
  17. Appareil d'aération technique selon la revendication 9, caractérisé en ce que la chambre d'amenée d'air (20), la section d'irradiation (10) et la chambre d'évacuation d'air (27) sont disposées parallèlement les unes aux autres dans le sens d'écoulement.
  18. Appareil d'aération technique selon l'une des revendications précédentes, caractérisé en ce que l'appareil d'aération technique (1) est conçu dans son ensemble comme une unité de construction.
  19. Appareil d'aération technique selon l'une des revendications précédentes, caractérisé par la conception sous forme d'installation d'aération technique composée de modules individuels.
  20. Pièce d'un bâtiment caractérisée par un appareil d'aération technique (1) selon l'une des revendications 1 à 19.
EP20196089.5A 2020-09-14 2020-09-14 Appareil d'aération technique et chambre Active EP3967941B1 (fr)

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EP4594686A1 (fr) * 2022-09-30 2025-08-06 Fellowes, Inc. Purificateur d'air uv avec système de déflecteur

Citations (3)

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Publication number Priority date Publication date Assignee Title
US20070297951A1 (en) * 2004-11-12 2007-12-27 Canio Caramuta Apparatus for Reducing the Bacterial Content of the Air
CN206320874U (zh) * 2016-12-27 2017-07-11 武汉茂锋医疗空气净化集团有限公司 风管灭菌机
DE202020103371U1 (de) * 2020-06-11 2020-07-01 Obshchestvo s ogranichennoi otvetstvennostiu «LED-Innovatsii» Geschlossene bakterizide Luftdesinfektionsleuchte

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Publication number Priority date Publication date Assignee Title
KR101381215B1 (ko) * 2014-01-21 2014-04-17 주식회사 에이엔에이치테크 공기정화기능을 갖는 항온항습장치
KR20180088560A (ko) * 2017-01-26 2018-08-06 (주)카인클린 차량 거치형 공기청정기
US20200108166A1 (en) * 2018-10-05 2020-04-09 Hamilton Sundstrand Corporation Air purifier system with ultraviolet light assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070297951A1 (en) * 2004-11-12 2007-12-27 Canio Caramuta Apparatus for Reducing the Bacterial Content of the Air
CN206320874U (zh) * 2016-12-27 2017-07-11 武汉茂锋医疗空气净化集团有限公司 风管灭菌机
DE202020103371U1 (de) * 2020-06-11 2020-07-01 Obshchestvo s ogranichennoi otvetstvennostiu «LED-Innovatsii» Geschlossene bakterizide Luftdesinfektionsleuchte

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