EP2148144A1 - Dispositif d'aération - Google Patents

Dispositif d'aération Download PDF

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Publication number
EP2148144A1
EP2148144A1 EP09008435A EP09008435A EP2148144A1 EP 2148144 A1 EP2148144 A1 EP 2148144A1 EP 09008435 A EP09008435 A EP 09008435A EP 09008435 A EP09008435 A EP 09008435A EP 2148144 A1 EP2148144 A1 EP 2148144A1
Authority
EP
European Patent Office
Prior art keywords
air
housing
heat exchanger
impeller
cross
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.)
Granted
Application number
EP09008435A
Other languages
German (de)
English (en)
Other versions
EP2148144B1 (fr
Inventor
Ralf Wagner
Hermann Leis
Daniel Hofmeister
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
Publication of EP2148144A1 publication Critical patent/EP2148144A1/fr
Application granted granted Critical
Publication of EP2148144B1 publication Critical patent/EP2148144B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0025—Cross-flow or tangential fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/005—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted on the floor; standing on the floor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers

Definitions

  • the invention relates to an air-conditioning device, in particular recirculation device, having a housing having an air inlet zone and an air outlet zone, in which a vortex generator provided, an impeller exhibiting cross-flow fan and a heat exchanger are arranged.
  • the subject of the invention is a Umluftfancoil.
  • the ventilation device or the Umbuchfancoil sucks by means of the cross-flow fan room air from a room, especially living room, office or the like.
  • the sucked air passes through a heat exchanger, which is tempered by means of hot or cold water, then passes through the cross-sectional fan and enters the treated air flow back into the room.
  • a heat exchanger which is tempered by means of hot or cold water
  • An air conditioning device of the type mentioned has a size substantially predetermined by the dimensions of the heat exchanger and the cross-flow fan. If the heat exchanger is arranged horizontally, then a relatively small overall height can be realized with a large overall depth predefined by the area of the heat exchanger. If the heat exchanger is installed edgewise, the result is a correspondingly high overall height with a small overall depth.
  • the length of the ventilation device is essentially determined by the length of the heat exchanger and by the diameter of the impeller determines the cross-flow fan and has only minor importance for the respective installation position, since appropriate dimensions can be specified and by row-shaped arrangement of several ventilation devices and correspondingly long zones of the room can be equipped.
  • the ventilation device is used as a base unit, that is, for example, within a hollow floor, the lowest possible height is required, with the result that a horizontally arranged heat exchanger results in a correspondingly large overall depth.
  • floor devices are arranged in the area of the facade of the room in the floor, wherein an air inlet zone and an air outlet zone are covered by means of an accessible grille and the grille is flush with the floor.
  • the air grille appears strongly and reduces the footprint in the room, since the grille is to be kept clear in order not to interfere with the air currents or even prevent.
  • the achievable power of the cross-flow fan or its efficiency greatly depends on the diameter of the impeller of the cross-flow fan or a ratio of the diameter to the height of the housing.
  • the diameter of the impeller of the cross-flow fan or the ratio of the permissible dimensions of the housing is derived, so that the diameter or the ratio can not be chosen arbitrarily large. From the prior art ventilation equipment of the aforementioned type are known, in which ratios of diameter of the impeller to a height of the housing in the range of about 0.4 to 0.45 achieved become. This limits the possible efficiency or the possible power of the cross-flow fan.
  • the invention is therefore an object of the invention to provide a ventilation device of the type mentioned, in which there is only a very small overall depth and a high available power of the cross-flow fan.
  • a ventilation device of the type mentioned in which there is only a very small overall depth and a high available power of the cross-flow fan.
  • a device has only a small height and can therefore - if desired - be used as underfloor device or underfloor facade device.
  • cross-flow fan and heat exchangers are arranged laterally adjacent to each other, that an end face of the heat exchanger is assigned to the cross-flow fan and the ratio of the diameter of the impeller of the cross-flow fan to the height of the housing ⁇ 0.5, preferably ⁇ 0.6 is.
  • Cross-flow fan and heat exchangers are thus arranged so that they are adjacent, preferably without lateral overlap. This means that no area of the heat exchanger lies above or below areas of the impeller of the crossflow fan. In this case, an end face of the heat exchanger to the cross-flow fan. Seen from the cross-flow fan from a vertical extent of the projected end face of the heat exchanger is therefore greater than, for example, a projected side surface of the heat exchanger.
  • the ratio of the diameter of the impeller of the cross-flow fan to the height of the housing of ⁇ 0.5 can be achieved.
  • the diameter of the impeller is greater than half the housing height.
  • the impeller be designed so that the diameter of the impeller ⁇ 60% of the housing height is.
  • the ratio of the diameter of the impeller of the cross-flow fan to the height of the housing in the range of 0.55 to 0.75.
  • the specified range allows a high performance of the cross-flow fan at the same time small size, ie depth and / or height.
  • a development of the invention provides that the ratio of the diameter of the impeller of the cross-flow fan to the height of a basic housing of the housing ⁇ 0.6, preferably 0.7, wherein the base housing is the housing without air inlet zone and without air outlet.
  • the base housing thus represents the housing in which the heat exchanger and the cross-flow fan is arranged, but without the region of the air inlet and outlet zone, that is without a possibly provided air grille. This is to be considered in the calculation of the ratio of the diameter of the impeller of the cross-flow fan to the height of the housing, as in a reference of the diameter of the base housing, due to the lower height of the base housing compared to the housing, give larger values for the ratio.
  • a development of the invention provides that the ratio of the diameter of the impeller of the cross-flow fan to the height of the base housing in the range 0.65 to 0.9. According to the above explanations, the ratio of the diameter to the height of the base housing is higher. In this case, the diameter of the impeller may be between 65% and 90% inclusive of the height of the base housing.
  • a development of the invention provides that the heat exchanger is arranged lying in the housing. This means that the side surface of the heat exchanger is substantially parallel to a bottom of the housing.
  • the heat exchanger in the vertical direction can be arranged arbitrarily, for example, on the underside of the housing resting or with an arbitrarily selected distance between the side surface of the heat exchanger and the bottom of the housing. In this way, a very low height can be realized.
  • the cross-flow fan associated end face of the heat exchanger is arranged perpendicular to the bottom of the housing.
  • a development of the invention provides that the heat exchanger is arranged obliquely in the housing. It is therefore an oblique position of the heat exchanger provided, which can rest in particular with its cross-sectional contour on the inner sides of the housing. As a result, the heat exchanger is arranged neither lying nor standing upright, but between these two positions. For example, the heat exchanger with its cross-sectional contour can touch the inner sides of a ceiling wall and / or a side wall of the housing. As a result of this contact, an interior of the housing is correspondingly separated so that an air space or a plurality of air spaces can form, which is formed on the one hand by the heat exchanger and on the other hand by parts of the housing.
  • an air inlet chamber and an air flow chamber can form with appropriate dimensioning of the heat exchanger.
  • the air inlet chamber downstream of an air inlet zone or air inlet opening, but positioned in front of the heat exchanger.
  • the air flow chamber is downstream of the heat exchanger, as viewed in the direction of flow, so that air drawn through the air inlet zone first enters the air inlet chamber, then passes through the heat exchanger and subsequently exits the air outlet zone via the air flow chamber and the cross flow fan.
  • a further development of the invention provides that the heat exchanger is arranged lying in the housing so that an air flow chamber formed below the heat exchanger expands in the direction of the impeller.
  • the air flow chamber is defined by the housing and the side surface of the heat exchanger and is disposed on the downstream side of the heat exchanger. This means that air enters the airflow chamber after passing through the heat exchanger.
  • an inclined arrangement of the heat exchanger creates an air flow chamber which widens in the direction of the impeller.
  • a side of the air flow chamber facing the crossflow fan is larger, for example, has a greater height, than a side of the air flow chamber facing away from the crossflow fan.
  • the corresponding side surface of the heat exchanger is mentally extended until it meets a surface of the housing. This means that a possibly existing gap, which is present by a small distance of the end face of the heat exchanger to the inside of the housing, when considering whether the air flow chamber widens in the direction of the impeller, is not taken into account.
  • the air flow chamber - seen in cross section - is triangular or trapezoidal.
  • the side surface of the heat exchanger must be mentally extended until it hits the inside of the housing.
  • a triangular formation of the air flow chamber may result if the heat exchanger rests with one of its edges on the underside of the housing associated with the inside.
  • the trapezoidal shape is, for example, when the heat exchanger is positioned at a distance from the inside of the housing, which is assigned to the underside. It is preferably provided that widens the triangular or trapezoidal cross-section of the air flow chamber in the direction of the impeller.
  • a development of the invention provides that above the heat exchanger, an air inlet chamber is formed, which - seen in cross-section - is triangular or trapezoidal, preferably expanding in the direction away from the impeller. Above the heat exchanger so the air inlet chamber is provided, through which air, for example, after passing through the air inlet zone, can enter into the heat exchanger.
  • the air inlet chamber expands preferably in the direction away from the impeller, or tapers in the direction of the impeller. Thus, it can be preferably prevented that air from the air inlet chamber can get directly to the cross-flow fan, or a narrow gap remaining to be easily sealed.
  • the heat exchanger is arranged obliquely in the housing and the air flow chamber is widened in the direction of the impeller, then the cross section of the air inlet chamber that tapers in the direction of the crossflow fan or the impeller results automatically, provided that the housing is substantially rectangular.
  • the air inlet chamber may be formed substantially point-symmetrical to the air flow chamber.
  • the air inlet chamber has a fluid connection to the heat exchanger so that air from the air inlet chamber can flow through the heat exchanger.
  • it is provided that air can pass from an air inlet zone into the air inlet chamber and from there into the heat exchanger.
  • a development of the invention provides that the vortex generator is located approximately centrally above the impeller. This means that the vortex former is arranged approximately perpendicularly above a rotation axis of the impeller.
  • the vortex generator provides for the formation of a control vortex the cross-flow fan and thus allows the generation of an air flow through the cross-flow fan.
  • the vortex former thereby forms a region of small distance between an outer circumference of the impeller and the vortex former.
  • a development of the invention provides that the vortex former is formed by an angle plate. This means that the vortex generator or the angle plate does not end at the position with the smallest distance to the impeller of the crossflow fan, but rather that it is provided that the angle plate is angled at this position. The angling of the angle plate thus forms the smallest distance to the impeller, not an end edge of the angle plate.
  • the angle plate has two legs, which enclose between them an obtuse angle, so that a V-shaped contour is present, which points with its tip in the direction of the impeller.
  • the vortex former is thus formed by the V-shaped contour of the angle plate.
  • the angle plate on two legs, which are angled against each other.
  • the V-shaped contour is formed, which points with its tip in the direction of the impeller.
  • the smallest distance of the angle plate to the impeller of the cross-flow fan is present, so that the angle plate can serve as a vortex generator.
  • a further development of the invention provides for a cover plate which extends from the heat exchanger to the edge of an air outlet opening assigned to the crossflow fan.
  • the cover plate can be arranged, for example, in a region of the housing be in which neither an air inlet nor an air outlet is provided from the housing.
  • the cover plate extends from the heat exchanger, wherein preferably there is a connection between the cover plate and the heat exchanger. This can be designed so that an air flow between the cover plate and the heat exchanger is prevented therethrough.
  • a further development of the invention provides that the cover plate forms the vortex former as an angle sheet metal section. A portion of the cover plate thus forms the angle plate or the portion of the angle plate.
  • the vortex former is thus provided as part of the cover plate extending from the heat exchanger to the edge of the air outlet opening. This allows efficient simultaneous sealing between the cover plate and the heat exchanger and a formation of the vortex generator.
  • a development of the invention provides that the cover plate is formed in the region of the edge of the air outlet opening by bending double-layered.
  • the two-ply design of the cover plate increases the stability, so that, for example, vibrations of the cover plate can be prevented. These vibrations can be stimulated, inter alia, by the use of the cover plate as a vortex generator.
  • By the edges both a higher stiffness of the material and a higher mass of the cover plate is present, so that the vibrations can be damped or avoided.
  • the edge also prevents the presence of a free edge of the cover plate inside the housing, thus reducing the risk of injury.
  • a development of the invention provides that the air inlet zone and the air outlet zone are formed at the top of the housing.
  • Air may enter the housing through the air inlet zone while the air exits through the air outlet zone.
  • air passes through the air inlet zone in the air inlet chamber, from there passes through the heat exchanger and then passes into the air flow chamber. From there, the air is sucked in by the cross-flow fan and blown out of the air outlet zone of the ventilation device.
  • the cross-flow fan and blown out of the air outlet zone of the ventilation device.
  • Both the air inlet zone and the air outlet zone are located at the top of the housing. This allows use of the ventilation device as an underfloor device.
  • the air inlet zone and the air outlet zone are in the area of the floor of the room.
  • the air inlet zone and the air outlet zone have at least one air grid or the like.
  • the grille for example, prevent dirt or other objects can get into the housing of the ventilation device.
  • the device is designed as an underfloor device, at the same time serve as a tread and thus advantageously closes with a floor of a room in which the device is arranged, plan or flat.
  • the cover plate separates the air inlet zone from the air outlet zone.
  • the cover sheet may be disposed between the air inlet zone and the air outlet zone.
  • the cover plate has a sealing function, for example by abutment against the heat exchanger, so that inside the housing or the ventilation device no air can pass from the air inlet zone to the air outlet without passing through at least the heat exchanger and the cross-flow fan ,
  • the housing has a height H of 110 to 150 mm, in particular about 130 mm.
  • the height H of the housing is defined as an overall height. That is, it describes an extent of the device from the bottom of the housing to the top, including, for example, air grilles.
  • the height of 110 to 150 mm allows easy use of the device as an underfloor device.
  • the base housing has a height H 'of 85 to 125 mm, in particular about 105 mm.
  • the height of the base housing describes a vertical extension of the housing of the ventilation device from the bottom to the top, but without attachment / attachments.
  • the basic housing has a height of 85 to 125 mm. Preferred is a height of about 105 mm.
  • attachment / attachments for example, a cover of the housing understood, that is, without the attachment / attachments direct access to, for example, the heat exchanger and / or the cross-flow fan is possible.
  • the attachment / attachments include, for example, the grille and its attachment, air inlet zone and air outlet zone. The said height allows easy installation in a raised Floor or in a correspondingly different construction of the floor.
  • the housing or base housing has a depth of 290 to 330 mm, in particular about 310 mm.
  • the depth of the base housing is defined by the depth of the heat exchanger and the diameter of the impeller of the cross flow fan. Since these two devices are arranged side by side, results in a depth of the base housing from 290 to 330 mm. A depth of about 310 mm is preferred.
  • the depth of the base housing or of the housing can be varied within wide ranges.
  • the ventilation device is designed as an underfloor device, in particular underfloor facade device.
  • underfloor façade unit indicates that the ventilation system is installed in the floor, close to the façade, ie in the window area of the room.
  • a further development of the invention provides that a common, preferably accessible, air grid is located in the air inlet zone and the air outlet zone.
  • the grille is thus arranged equally in the air inlet zone and the air outlet zone. Since the ventilation device can be designed as an underfloor device, the grille is preferably accessible.
  • the air inlet zone has an air inlet opening which forms a recirculation air inlet opening and that the air outlet opening is a recirculation air outlet opening.
  • the ventilation system is a recirculation device that sucks indoor air, subjected to temperature or cooling and then back into the room from which it has sucked in the air.
  • the arrangement may be provided such that the vortex former limits the air inlet opening or the air outlet opening, in particular if the vortex former is formed by the cover plate.
  • the heat exchanger may limit the air inlet opening or the air outlet opening, provided that it rests with its longitudinal edges against the inner sides of corresponding housing walls and also limits a corresponding air opening with such a longitudinal edge. It is essentially provided that the same air emerges through the circulating air outlet opening, which has entered the ventilation device through the circulating air inlet opening.
  • a further development of the invention provides that air coming from the heat exchanger reaches the impeller of the crossflow fan both via the air flow chamber and via the end face of the heat exchanger facing the crossflow fan. It is thus provided that the air enters, for example, through a side surface of the heat exchanger in this and can exit via a further side surface and the front side again from the heat exchanger. It is not necessary for the air to completely pass through the heat exchanger from one side surface to the other side surface. Rather, an exit of the air from the front side may already be provided. Both at an outlet of the air over the front side and on the side surface, the air coming from the heat exchanger reaches the impeller of the cross-flow fan. Kinetic energy is supplied through these, which accelerates the air and is transported further, for example in the direction of the air outlet zone.
  • the figure shows an air-technical device 1, which is designed as a recirculation device 2, in particular as Umluftfancoil device 3.
  • the ventilation device 1 forms a base unit 4, which is used in the floor of a room to be air-conditioned 5 such that a top 6 is flush with the floor of the room 5.
  • the ventilation device 1 is preferably arranged along a facade of the room 5, that is to say in the window area or the like.
  • the device is thus designed as underfloor device 7 or underfloor facade device 8.
  • the ventilation device 1 has a housing 9, which has a top wall 10, a bottom wall and side walls 12 and 13.
  • the ceiling wall 10 is provided with an air grill 14.
  • the side wall 12 is composed of a sloping side wall zone 15 and a vertical side wall section 16.
  • the housing 9 has a height H, which describes the extension of the housing 9 in the vertical direction from the bottom wall 11 to the top 6 of the grille 14 and the ceiling wall 10.
  • the installation of the ventilation device 1 is carried out with height-adjustable feet 20 which are arranged in the bottom wall 11. If the installation with the feet on a bare floor of the room 5, the ventilation device 1 can be adjusted by means of height adjustment such that the air grille 14 is aligned with the, for example, desiresstelzten, floor of the room 5.
  • the base case has a depth t which is about 290 mm in the illustrated case.
  • the height H of the housing is about 130 mm, while the height of the base housing is about 105 mm.
  • the air grille 14 extends over the entire top 6 of the HVAC device, covering an air inlet zone 21 and an air outlet zone 22.
  • the air grille 14 extends substantially over the entire depth of the housing 9.
  • a heat exchanger 23 is disposed inside the housing 9 and a cross-flow fan 24 is arranged below the air outlet zone 22.
  • the heat exchanger 23 has a rectangular cross-sectional contour with the corner edges 25, 26, 27 and 28.
  • the heat exchanger 23 further has side surfaces 29 and 30 and end faces 31 and 32.
  • the side surface 29 represents an inlet surface 33 through which air can enter the heat exchanger 23. This air can emerge from the heat exchanger 23 through exit surfaces 34, which comprises at least the side surface 30 and the end face 31.
  • Air thus passes through the air inlet zone 21 into the interior of the housing 9, where it first enters an air inlet chamber 35.
  • This has a fluidic connection to the entry surface 33, so that the air from the air inlet chamber 35 can enter the heat exchanger 23.
  • the exiting the heat exchanger 23 through the exit surfaces 34 air enters an air flow chamber 36 and is then sucked by the crossflow fan 24 and moved through the air outlet 22 again in the space 5.
  • Both the air inlet chamber 35 and the air flow chamber 36 are seen in cross-section substantially trapezoidal. This means that two short end faces are connected by two longer sides. It is not necessary that the end faces are parallel to each other.
  • the air inlet chamber 35 tapers in the direction facing the cross flow fan 24, while the air flow chamber 36 widens in this direction.
  • the trapezoidal design of the air inlet chamber 35 and the air flow chamber 36 comes from the obliquely arranged in the housing 9 heat exchanger 23 ago. The arrangement is such that the heat exchanger 23 is arranged in an inclined position in the housing 9, that it is arranged with its corner edge 28 near the air grille 14, while the corner edge 28 comes into contact with the vertical side wall portion 16.
  • the cross-flow fan 24 has an impeller 37, which is rotatably mounted about a rotation axis 38.
  • the impeller 37 has blades 39 through which the sucked air is supplied kinetic energy and this is thus transported further.
  • the cross-flow fan 24 further has a vortex former 40, which is arranged approximately centrally above the impeller 37.
  • the vortex former 40 is formed by an angle plate 41, in such a way that the angle plate 41 has two legs 42, which include an obtuse angle between them, so that a V-shaped contour 43 is formed, which with a tip 44 in the direction of the impeller 37th shows and thus forms the vortex former 40.
  • the angle plate 41 is part of a cover plate 45, which extends from the heat exchanger 23 to the edge of an air outlet opening 46, which is associated with the cross-flow fan 24 extends. Through the air outlet opening 46, the air passes from the cross-flow fan 24 into the air outlet zone 22.
  • the air outlet opening 46 is thus arranged substantially in the region of the air outlet zone 22.
  • On the heat exchanger 23 facing side of the cover plate 45 it may be provided that the cover plate 45 communicates with the heat exchanger 23 and with its side surface 29 in conjunction and thus prevents the escape of air from the air inlet chamber 35 in the direction of the cross-flow fan 24.
  • the cover plate 45 has an angle sheet portion 47, which constitutes the vortex former 40 forming angle plate 41. In the region of an edge 48 of the air outlet opening 46, the cover plate 45 is formed double-layered. The cover plate 45 is provided in such a way that it separates the air inlet zone 21 from the air outlet zone 22.
  • the air inlet zone 21 and the air outlet zone 22 are formed in the region of the upper side 6 of the ventilation device 1. They are covered by the air grille 14, which is preferably enterable, in particular for the case that the ventilation device 1 is designed as a base unit 4 or underfloor device 7 / underfloor facade unit 8.
  • the air grille 14 is preferably designed as a common grille, so as both the air inlet zone 21 and the air outlet zone 22 covering air grille. Since the ventilation device 1 is designed as a recirculation device 2, the air inlet zone 21 has an air inlet opening 49 which is designed as a recirculation inlet opening 50. Analogously, the air outlet opening 46 is a recirculating air outlet opening 51.
  • Room air of the room 5 is sucked through the recirculation inlet opening 50 into the air inlet chamber 35 due to the suction effect of the cross flow fan 24 and passes through the heat exchanger 23.
  • This serves by means of a water cycle, not shown, either for heating or for cooling the room air.
  • Correspondingly heat-treated room air passes from the heat exchanger 23 in the air flow chamber 36 and from there into the cross-flow fan 24.
  • the room air flows through the impeller 37 of the cross-flow fan 24, wherein by the vortex former 40, the formation of a control vortex (not shown) is caused.
  • the room air After passing through the impeller 37, the room air enters the room 5 again through the circulating air outlet opening 51 and the air grille 14. Overall, therefore, there is a recirculation mode.
  • the circulating air outlet opening 51 is bounded by the side wall 13 and the cover plate 45.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
EP09008435.1A 2008-07-26 2009-06-29 Dispositif d'aération Active EP2148144B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008034905A DE102008034905A1 (de) 2008-07-26 2008-07-26 Lufttechnische Einrichtung

Publications (2)

Publication Number Publication Date
EP2148144A1 true EP2148144A1 (fr) 2010-01-27
EP2148144B1 EP2148144B1 (fr) 2017-10-11

Family

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Family Applications (1)

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EP09008435.1A Active EP2148144B1 (fr) 2008-07-26 2009-06-29 Dispositif d'aération

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EP (1) EP2148144B1 (fr)
DE (1) DE102008034905A1 (fr)

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EP0943875A2 (fr) * 1998-03-16 1999-09-22 Fujitsu General Limited Dispositif de conditionnement d'air
DE202004003427U1 (de) * 2004-03-05 2004-05-13 Ltg Aktiengesellschaft Raumlufttechnische Einrichtung zum Heizen, Kühlen und/oder Belüften eines Raumes
EP1619447A2 (fr) * 2004-07-22 2006-01-25 LTG Aktiengesellschaft Dispositif de ventilation et/ou climatisation d'un local
DE202007002361U1 (de) * 2007-02-17 2007-04-26 Ltg Aktiengesellschaft Lufttechnische Einrichtung
DE202008010063U1 (de) * 2008-07-26 2008-10-02 Ltg Aktiengesellschaft Lufttechnische Einrichtung
WO2008123212A1 (fr) * 2007-03-27 2008-10-16 Mitsubishi Electric Corporation Ventilateur sirocco et conditionneur d'air

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