EP1959205A2 - Unite d'interieur avec géométrie compact pour installation sous sol - Google Patents

Unite d'interieur avec géométrie compact pour installation sous sol Download PDF

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Publication number
EP1959205A2
EP1959205A2 EP08001102A EP08001102A EP1959205A2 EP 1959205 A2 EP1959205 A2 EP 1959205A2 EP 08001102 A EP08001102 A EP 08001102A EP 08001102 A EP08001102 A EP 08001102A EP 1959205 A2 EP1959205 A2 EP 1959205A2
Authority
EP
European Patent Office
Prior art keywords
air
housing
heat exchanger
side wall
conditioning device
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
EP08001102A
Other languages
German (de)
English (en)
Other versions
EP1959205B1 (fr
EP1959205A3 (fr
Inventor
Ralf Dipl.-Ing. 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
Publication of EP1959205A2 publication Critical patent/EP1959205A2/fr
Publication of EP1959205A3 publication Critical patent/EP1959205A3/fr
Application granted granted Critical
Publication of EP1959205B1 publication Critical patent/EP1959205B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/0233—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with air flow channels
    • F28D1/024—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with air flow channels with an air driving element
    • 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
    • F24F1/0053—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted at least partially below the floor; with air distribution below 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
    • F24F1/0018—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
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/40—HVAC with raised floors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation

Definitions

  • 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 large height, with a smaller overall depth.
  • the length of the ventilation device is determined essentially by the length of the heat exchanger and by the length of the impeller of the cross-flow fan and has for the respective installation position only minor importance, 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 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 depth.
  • a ventilation device of the type mentioned, in which there is only a very small depth.
  • such a device preferably has only a low height and can therefore - if desired - be used as a floor installation device.
  • the heat exchanger is arranged in an inclined position in the housing, that it rests in particular for the formation of at least one air space with its cross-sectional contour on the inner sides of a ceiling wall and a side wall of the housing and that the heat exchanger with its cross-sectional contour to almost to a vortex former or up to the vortex generator, wherein the heat exchanger - seen in the vertical direction - the cross-flow fan considerably, in particular about half, overlaps.
  • the heat exchanger is therefore in an inclined position in the housing of the ventilation device, so it is neither lying nor standing upright arranged, but between these two positions. With its cross-sectional contour, it abuts at least on the inner sides of a ceiling wall and a side wall of the housing.
  • the heat exchanger has a rectangular cross-sectional contour
  • two corner edges of the heat exchanger touch the insides of the top wall and side wall.
  • the interior of the housing is separated accordingly, so that an air space is formed, which is formed on the one hand by the heat exchanger and on the other hand, parts of the housing.
  • the obliquely arranged heat exchanger furthermore projects with its cross-sectional contour almost to a vortex former of the cross flow fan or even touches it, it is extremely close to the cross flow fan, the cross flow fan surprisingly provides its size corresponding air flow capacity, so that the effectiveness of the cross flow fan is not limited.
  • a corner edge preferably extends almost to or even touches the vortex former.
  • the crossflow fan or its impeller Due to the inclined position of the heat exchanger and the extremely close allocation of heat exchanger and vortex generator is the impeller of the cross flow fan - seen in the vertical direction - in overlapping position to the heat exchanger, the crossflow fan or its impeller is significantly overlapped, not only slightly marginal, but so largely in that one-third of or about half or even more than half of the cross-sectionally circular structure of the impeller of the cross-flow fan is overlapped. The overlap can then go beyond half of the cross-section of the crossflow fan addition, if the vortex generator is not centered, that is not arranged approximately at the height of the axis of rotation of the impeller, but offset.
  • the vortex former is formed at least for the most part or only by a substantially planar flat element, in particular a flat sheet metal.
  • This flat element or sheet metal preferably extends vertically or approximately vertically. Due to the small dimensions of the vortex generator - seen transversely to the flat element - is a correspondingly large receiving space for the obliquely arranged heat exchanger in this area available, so that it can be arranged accordingly close to the cross-flow fan.
  • the heat exchanger rests with its cross-sectional contour on the inside on a bottom wall of the housing. Accordingly, it extends between the ceiling wall and the bottom wall, wherein it touches these two walls. The distance from the ceiling wall and bottom wall therefore dictates the skew angle of the heat exchanger.
  • the housing has at least one air inlet opening and at least one air outlet opening on its ceiling wall or in the region of the ceiling wall. Since the ventilation device is preferably used as a floor installation device, these two air openings are on its ceiling wall and consequently in the floor space of the room.
  • the air inlet opening is a recirculation inlet opening and if the air outlet opening is a circulating air outlet opening, i.e. the ventilation device is a recirculation device which draws in room air, treats the temperature and then returns it to the room from which it has sucked in the air.
  • the arrangement can be made such that the heat exchanger limits the air inlet opening or the air outlet opening.
  • the vortex former limits the air inlet opening or the air outlet opening.
  • the heat exchanger may have a rectangular cross-sectional contour, so that it rests with its longitudinal edges against the insides of corresponding housing walls and also limits a corresponding air opening with such a longitudinal edge.
  • the housing In order to achieve the smallest possible housing depth, the housing is - seen in cross-section - not rectangular or square, but it increases seen from top to bottom. As a result, it is less deep at the top than at the bottom. However, since only the upper portion of the housing in the floor appears in appearance, such a design is particularly narrow in terms of depth.
  • a development of the invention provides that the top wall of the housing adjoins with a longitudinal edge to an oblique, the housing depth upwardly shortening side wall or side wall zone of the housing.
  • Either the entire side wall of the housing is formed obliquely or only a portion of the side wall, namely the mentioned side wall zone.
  • a vertical side wall section of the side wall then preferably adjoins the lower longitudinal edge of the oblique side wall zone of the side wall. The entire side wall is thus formed in the upper region by the inclined side wall zone and the lower region by the vertical side wall portion.
  • the heat exchanger rests with its cross-sectional contour on the inside of the side wall portion. It thus adjoins the vertical side wall section. At a distance from it, the oblique side wall zone, so that in this area a suction / air flow for the room air is available, that is, enters through the air inlet opening in this suction and can then from there over a large area to flow through the heat exchanger.
  • the depth of the ceiling wall of the housing has a dimension in the range of 15 to 25 cm, in particular about 20 cm, preferably 20.5 cm.
  • the housing height is chosen so that a floor installation is possible.
  • the ventilation device is thus 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.
  • the housing height preferably has a dimension in the range of 15 to 25 cm, in particular about 20 cm, preferably 18.5 cm, so that a trouble-free installation in a raised floor or in a correspondingly different construction of the floor is possible.
  • the cross-flow fan has an impeller, wherein the vortex generator is approximately centrally above the impeller, in particular approximately radially to the latter.
  • the vortex former is preferably designed as a planar flat element, in particular a flat sheet metal. It can be provided that the free end region of the flat element, which points in the direction of the impeller, viewed in cross section, is designed arcuate. As a result, the arc thus formed forms the smallest distance to the impeller, not the end edge of the flat element.
  • a development of the invention provides that the air inlet opening and the air outlet opening are covered by a common air grid. Furthermore, it is advantageous if the side wall zone runs parallel or approximately parallel to an inlet surface and / or to an outlet surface of the heat exchanger. Thus, the bank angle of the heat exchanger is about the same size as the bank angle of the sidewall zone.
  • the FIG. 1 shows an air-technical device 1, which is designed as a recirculation device 2, in particular as Um povertyfancoil device 3.
  • the ventilation device 1 forms a floor unit 4, which in the floor of a room to be air-conditioned 5 ( FIG. 5 ) is used such that the top is flush with the floor of the room 5.
  • the ventilation device is preferably arranged along a facade of the room 5, that is to say in the window area or the like.
  • the ventilation device 1 has a housing 6, which has a top wall 7, one of the FIG. 1 not apparent bottom wall 8 has and four side walls 9, 10, 11 and 12 has.
  • the ceiling wall 7 is provided with an air grid 13.
  • the side walls 11 and 12 form end walls which extend vertically and are surmounted by the air grille 13 a bit far.
  • the vertically extending side wall 10 is slightly surmounted by the air grille 13.
  • the side wall 9 is composed of a sloping side wall zone 14 and a vertical side wall section 15.
  • the ceiling wall 7 borders with a longitudinal edge 16 to the oblique, the housing depth upwardly shortening sidewall zone 14 and a lower longitudinal edge 17 of the sidewall zone 14 adjoins the vertical sidewall section 15.
  • An upper longitudinal edge 18 of the sidewall zone 14 is slightly surmounted by the air grid 13.
  • the installation of the ventilation device 1 is carried out with height-adjustable feet 19, which are arranged on Flanschstsammlung 20 in the region of the side walls 11 and 12. If the installation with the feet on a bare floor of the room 5, the ventilation device 1 can adjust by means of height adjustment such that the grille 13 with the floor, for example, stilted floor, the room 5 is aligned. Fastening tabs 21 allow a fixing of the ventilation device 1 in the desired position.
  • FIGS. 1 . 2 . 3 and 4 illustrate that the grille 13 extends over the entire top of the HVAC device 1, covering an air inlet opening 22 and an air outlet opening 23. Air inlet opening 22 and air outlet 23 extend over approximately three quarters of the length of the device length 1. In the remaining area of the drive motor of a housed inside the housing 6 cross-flow fan 24 and a water connection means for a located in the interior of the housing 6 heat exchanger 25 are arranged.
  • the heat exchanger 25 has a rectangular cross-sectional contour with the corner edges 27, 28, 29 and 30.
  • the heat exchanger 25 has an entry surface 31 and an exit surface 32.
  • the heat exchanger 25 is arranged in an inclined position in the housing 6, that it with its corner edge 17 against the inside 33 of the top wall 7 and with its corner edge 28 against the inside 34 of the side wall 9, namely the inside 34th of the side wall portion 15 abuts, so that thereby an air space 35 is delimited in the interior of the housing 6, which serves the air supply to the heat exchanger 25.
  • the corner edge 29 of the heat exchanger 25 abuts against the inner side 36 of the bottom wall 8.
  • the inlet surface 31 of the heat exchanger 25 extends approximately parallel to the plane of the side wall zone 14.
  • the air inlet opening 22, which forms a recirculation inlet opening 37, extends between the longitudinal edge 16 and the corner edge 27.
  • the vortex former 38 is essentially formed by a planar flat element 39, in particular a flat sheet metal, wherein the flat element 39 extends approximately radially and, when viewed perpendicularly, to a rotational axis 40 of an impeller 41 of the crossflow fan 24 at the level of the rotational axis 40.
  • a free end edge 42 of the vortex generator 38 can lie in the plane of the flat element 39, as it is with a solid line from the FIG. 5 evident.
  • the vortex former 38 has an angled end zone, as indicated by dashed line 43 in FIG FIG. 5 is indicated.
  • the arrangement is made such that the corner edge 30 of the heat exchanger 25 extends almost to the vortex former 38.
  • the corner edge 30 touches the vortex former 38.
  • the heat exchanger 25 assumes the aforementioned inclined position in the housing 6, it overlaps - seen in the vertical direction - with its upper zone 44, the impeller 41 of the cross flow fan 24.
  • the arrangement is preferably made such that it overlaps the impeller 41 about halfway.
  • the height h of the housing 6 is only 18.5 cm.
  • the depth t of the housing 6 is in the region of the air grille 13 only 20.5 cm.
  • the depth T of the housing is 24.15 cm.
  • this larger housing depth T is in the floor of the room 5 with respect to the upper, narrower housing depth t, only the narrow housing depth t appears optically.
  • room air 45 of the room 5 is sucked through the recirculation inlet opening 37 into the air space 35 due to the suction effect of the crossflow fan 24 and passes through the heat exchanger 25, by means of a water cycle, not shown, either for heating the room air 45 or Cooling the room air 45 is used.
  • heat-treated room air 45 exits from the outlet surface 32 of the heat exchanger 25, passes through the impeller 41 of the cross-flow fan 24 and flows out of the air outlet opening 23 and thus back into the space 5.
  • the air outlet opening 23 is designed as Um Kunststoffauslassö réelle 46. It is bounded by the vortex former 38 and the side wall 10 and the corresponding side edge of the air grille 13.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Duct Arrangements (AREA)
EP08001102.6A 2007-02-17 2008-01-22 Unité d'intérieur avec géométrie compacte pour installation sous le sol Active EP1959205B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007007928A DE102007007928A1 (de) 2007-02-17 2007-02-17 Lufttechnische Einrichtung

Publications (3)

Publication Number Publication Date
EP1959205A2 true EP1959205A2 (fr) 2008-08-20
EP1959205A3 EP1959205A3 (fr) 2010-11-17
EP1959205B1 EP1959205B1 (fr) 2018-05-02

Family

ID=39469443

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08001102.6A Active EP1959205B1 (fr) 2007-02-17 2008-01-22 Unité d'intérieur avec géométrie compacte pour installation sous le sol

Country Status (2)

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EP (1) EP1959205B1 (fr)
DE (1) DE102007007928A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009030114B4 (de) 2009-06-22 2011-03-31 Heiner Andersen Klimaanlage
DE102009053527B4 (de) 2009-11-18 2014-04-03 Heiner Andersen Klimaanlage

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004003427U1 (de) * 2004-03-05 2004-05-13 Ltg Aktiengesellschaft Raumlufttechnische Einrichtung zum Heizen, Kühlen und/oder Belüften eines Raumes

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2039564A5 (fr) * 1969-04-09 1971-01-15 Bull General Electric
US4733543A (en) * 1986-12-05 1988-03-29 Enviromaster International Corporation Packaged air conditioner
JP2627301B2 (ja) * 1988-04-11 1997-07-02 三洋電機株式会社 熱交換ユニット
JP2686105B2 (ja) * 1988-09-05 1997-12-08 三洋電機株式会社 熱交換ユニット
DE102004010738A1 (de) * 2004-03-05 2005-09-22 Ltg Aktiengesellschaft Raumlufttechnische Einrichtung zum Heizen, Kühlen und/oder Belüften eines Raumes sowie entsprechendes Verfahren

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004003427U1 (de) * 2004-03-05 2004-05-13 Ltg Aktiengesellschaft Raumlufttechnische Einrichtung zum Heizen, Kühlen und/oder Belüften eines Raumes

Also Published As

Publication number Publication date
EP1959205B1 (fr) 2018-05-02
DE102007007928A1 (de) 2008-08-21
EP1959205A3 (fr) 2010-11-17

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