EP0374527A2 - Système de distribution d'air - Google Patents

Système de distribution d'air Download PDF

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Publication number
EP0374527A2
EP0374527A2 EP89121790A EP89121790A EP0374527A2 EP 0374527 A2 EP0374527 A2 EP 0374527A2 EP 89121790 A EP89121790 A EP 89121790A EP 89121790 A EP89121790 A EP 89121790A EP 0374527 A2 EP0374527 A2 EP 0374527A2
Authority
EP
European Patent Office
Prior art keywords
air
air distribution
duct
ceiling
ventilation
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.)
Withdrawn
Application number
EP89121790A
Other languages
German (de)
English (en)
Other versions
EP0374527A3 (fr
Inventor
Rüdiger Dr.-Ing. Detzer
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.)
Kessler and Luch GmbH
Original Assignee
Kessler and Luch GmbH
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 Kessler and Luch GmbH filed Critical Kessler and Luch GmbH
Publication of EP0374527A2 publication Critical patent/EP0374527A2/fr
Publication of EP0374527A3 publication Critical patent/EP0374527A3/fr
Withdrawn legal-status Critical Current

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    • 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
    • F24F13/02—Ducting arrangements
    • F24F13/0236—Ducting arrangements with ducts including air distributors, e.g. air collecting boxes with at least three openings
    • 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

Definitions

  • the invention relates to an air distribution system with one or more air transport channels connected to a ventilation center and one or more air distribution channels provided with air passages, which are connected to one another via at least one flow connection; it also relates to a ventilation duct and a ventilation ceiling formed from it.
  • supply air and exhaust air are routed through air ducts, the cross section of which is selected so that an air speed in the range between approximately 5 m / s and 8 m / s is achieved.
  • the branches for the individual air outlets which consist of either fixed or flexible pipe sections, are connected to these air lines. It is entirely possible to insert the air outlets into the wall of the air duct even at suitable points (if necessary with short connecting pieces).
  • these air outlets are provided with adjustable flaps or adjustable wings so that the emerging jet enters the room in the desired direction and the mixing section necessary for mixing the supply air into the room air, if necessary. by swirl until the zone of subsidence has subsided.
  • each of the air outlets has one of the pressure drop and, if applicable, of the speed profile of the one in the air line flowing air a different admission pressure and different inflow conditions, so that the desired or necessary configuration of the jet must be set separately for each of the air outlets.
  • the jet ventilation withdraws from a source ventilation.
  • the separation of the air transport channels from the air distribution channels ensures that pressure drops due to the air transport can no longer affect the air distribution, since the air distribution channels are only connected to the air transport channels with a few overflow connections and in them the overflowing air flows to the passages without a substantial axial air movement takes place.
  • the overflow connections are matched in terms of their number and their arrangement to the number and arrangement of the air outlets. This means that only a single overflow connection must exist in a line section with few air passages, while more overflow connections must be provided at locations with an increase in air passages, the number of overflow connections being kept lower overall can than the number of air outlets. It is only essential that - apart from the necessary inflow and equalization flows - axial flows in the air distribution duct are avoided, as a result of which a uniform pressure level is achieved over the entire length of the distribution duct.
  • the overflow connections can be achieved with relatively short connecting lines if the air transport duct and the air distribution duct (s) are arranged separately from one another. This arrangement allows a very flexible construction of the ventilation system, since changes in the air distribution channels or changes in the air passages do not affect the air transport channels. If the air distribution duct and the air transport duct are arranged directly next to one another and they have a common partition, the overflow connections are formed by simple overflow openings. It is advantageous if the air transport duct is adjacent to two air distribution ducts, since this provides a particularly space-saving installation option. In the flow connection - be it a relatively short connecting line or an overflow opening - actuators and / or devices for air treatment such as air filters or heat exchangers can also be installed. This opens up the possibility of performing subsequent air treatments, for example with the aim of meeting the requirements of different ventilation zones.
  • the narrow trapezoidal sides of the air transport ducts facing the ventilated room can be provided with the necessary lighting fixtures (or also with other building technology-related equipment - sprinklers or the like).
  • the room-side ends of the air distribution ducts contain the air outlets. These can be of all shapes common in ventilation technology, from simple air distribution grilles to swirl diffusers, slot diffusers to outflow grilles that cover the entire outflow area of the air distribution duct.
  • the grids can also be designed as optical grids and the lighting fixtures can be arranged in the depth of the air distribution channels.
  • the ceiling formed from such trapezoidal channels joined together can have individual exhaust air channels connected between two groups of supply air fields, which advantageously, in the form of air distribution channels, form a trapezoid downward. If the lighting fixtures are arranged on the narrow sides of these trapezoids in this case, their heat loss is taken directly from the exhaust air and dissipated, which reduces the cooling load of the ventilated room.
  • the arrangement of these exhaust air ducts between the supply air duct groups takes place in accordance with the flow, so that the flow of space can develop as required. Preferred locations are ceiling areas above apparatuses or devices with greater heat release.
  • the static negative pressures which occur as a result of the (relatively) high flow velocity in the air transport ducts in relation to the room can be used to mix the conditioned supply air in a suitable manner with the aim of reducing the temperature difference between the supply air and the room air with the same heat load.
  • a thermal aftertreatment, in particular ceiling cooling can also be carried out by providing the walls of the air ducts with heat exchangers, the ribs of which enlarge the exchanger surface and project into the air flow.
  • FIG 1 is a schematic building section
  • Darge provides with a supply floor (19) and with ventilated rooms (17) and a non-ventilated room (18).
  • the air-conditioning center (10) is located on the supply floor (19) and communicates with the free atmosphere via the outside air supply line (11) and processes the outside air drawn in and presses it into the supply air supply lines (12).
  • admixing of recirculated air can also take place, which is taken from the exhaust air discharge line (13) and fed to the mixing chamber of the air-conditioning center (10) via an air recirculation connector (14).
  • Flaps (14.1) in the recirculating air connector (14) and in the exhaust air discharge line regulate the proportion of recirculating air.
  • the excess air goes outside via the exhaust air duct (15).
  • connecting lines branch off from the supply air supply line and from the exhaust air discharge line to the individual floors or parts of the floor, which are led into the relevant parts of the building via corresponding supply shafts (16) or supply ducts.
  • the air transport channels (20) branch off from the rising supply air supply line (12) shown in FIG. 1 for the ventilated rooms (17).
  • Air distribution channels are connected to the air transport channels via overflow connectors (21), which in turn are provided with air outlets (31).
  • the arrangement of these air outlets (31) is adapted to the requirements in the ventilated rooms.
  • the selection takes into account a uniform air distribution by uniform distribution of the air outlets (31) or a subdivision into ventilation zones, in that the air outlets (31) are combined in groups.
  • the exhaust air is fed to the exhaust air discharge line via exhaust air collection channels (40) which are kept short here.
  • the extraction of exhaust air from the floor shown here is intended to support and ensure the desired room air flow, with the inflow direction and exhaust air throughput being able to be changed within certain limits with the aid of the inflow grille (41). It goes without saying that the exhaust air extraction is also provided in other places can be according to the prevailing conditions in the ventilated room.
  • FIG. 2 shows a section with a section of an air transport duct (20) to which three air distribution ducts (30) are connected.
  • the connection is made via overflow connectors (21), which can be of a light or even flexible construction and thereby allow easy installation and also easy displacement of the air distribution channels (30).
  • This is shown, for example, by the middle of the air distribution channels (30), which is shifted towards the left channel (for example, in order to actually achieve the desired room flow), the overflow connectors being slightly bent.
  • the air outlets (31) - shown only as short sockets - can be arranged in various ways on the air distribution channels (30) to set up ventilation zones.
  • the air outlets (31) on the left channel are provided approximately equally distributed, while in the middle channel they are combined in groups of three.
  • the right channel has air outlet nozzles (31) of different lengths, so that the core area of the emerging jet can also be guided into the occupied zone, for example in order to achieve "spot cooling".
  • FIG. 3 a) and b) show schematically the possible arrangements of air transport channel (20) and air distribution channels (30) to each other.
  • three air distribution channels (30) are connected to an air transport channel (20) via overflow connectors (21).
  • This has the advantage that the arrangement of the air outlets (31) on the air distribution channels (30) can be designed as desired and that the air distribution channels themselves can be shifted by simply changing (or deforming flexible) overflow connectors (21).
  • FIG. 3 b) shows an air transport duct (20) on which the air distribution ducts (30) are integrally formed.
  • the common walls are used as continuous dividers formed in which overflow openings (22) are provided according to the requirements (distribution of the air outlets (31) in the air distribution channels (30)).
  • overflow openings can simultaneously be used for subsequent air treatment (heating, cooling, filtering); however, they can also contain overflow grids with the aid of which the flow resistance determining the overflow can be set.
  • the latter means that only the axial air movement necessary for the inflow to the air outlets prevails in the air distribution channels, but a continuous axial air movement corresponding to a transport process is suppressed.
  • FIG. 4 shows a further development of the embodiment according to FIG. 3 b), which is created by joining together a large number of individual channels shown there.
  • a ventilation ceiling can be constructed in a surprisingly simple manner by assembling such individual ducts and designed as a suspended ventilation ceiling.
  • Two side-by-side supply air transport channels (20) are supplied with the supply air via supply air supply lines (12), which flows (in the illustration on both sides) in the transport channels and via the overflow openings (22) provided with filter inserts (24) into the supply air transport channels (20) assigned supply air distribution channels (30) overflows.
  • This ventilation ceiling can continue both in the longitudinal direction of the air transport and air distribution ducts, and can also be extended in any manner transversely to it.
  • the supply air is cleaned in filter cells (24), it can also be used as a ventilation ceiling for production sensitive to dust, whereby it is irrelevant for the ventilation system whether the air outlets are swirl outlets (32) or outflow grids (33 ), provided with rectifiers (7) or rectifier fabrics. While turbulence-rich jet ventilation occurs in the first case, the second conducts Fall over to a source ventilation with low turbulence displacement flow.
  • the upward-facing narrow sides of the trapezoids accommodate the suspension rods (29), so that the ventilation ceiling formed in this way can be used in a simple manner as a suspended ceiling.
  • the downward-facing narrow sides of the trapezoids can be provided with corresponding lighting fixtures (26).
  • FIG. 4 shows the use of an air filter which - since it has to be replaced from time to time - must expediently be accessible from the air distribution duct (30).
  • the intermediate wall between the air distribution duct (30) and the air transport duct (20) has an overflow opening (22) into which the air filter cell (24) is inserted.
  • the protruding edge (24.1) of the air filter cell with a circumferential seal is held by overlapping pressure strips (36), the upper of the pressure strips being fixed and the lower one being movable.
  • FIG. 5 schematically shows a ventilation ceiling with supply air transport channels (20) which are supplied with supply air via the connected supply air supply lines (12) and which reaches the air transport channels (30) via the overflow openings (22).
  • the underside of the transport channels is provided with the covers (30.1) into which swirl air outlets (32) are inserted.
  • the ventilation zone formed in this way is flanked on both sides by exhaust air zones with exhaust air collecting ducts (40) connected to the exhaust air discharge lines (13).
  • exhaust air collecting ducts (40) are in turn connected to trapezoidal ducts of the ceiling which are open at the bottom, so that the exhaust air flows out via these ducts without these ducts having essential guiding or distributing functions.
  • the inflow of the exhaust air - represented by the small, upward-pointing arrows - is largely determined by the room flow, the arrangement of these exhaust air ducts over zones in which excess heat is released being advantageous.
  • the lighting fixtures (26) are advantageously installed so that the exhaust air grid (43) also assumes the function of a light grid and can be designed according to the requirements of the light grid.
  • the lighting fixtures (26) are provided in the supply air zones on the narrow sides of the supply air transport ducts (20) which are closed at the bottom. It goes without saying that if outflow grids are used instead of the swirl outlets, they can also be designed as light grids and the arrangement of the lighting fixtures can basically take place through the supply air distribution channels (30).
  • the individual supply air distribution channels are suspended from the suspension rods (29), so that here again the shape of the suspended ceilings results, the supply air transport ducts (20) being closed by an upper cover (20.1) and the exhaust air collecting ducts (40) likewise being closed by an upper attachment.
  • FIGS. 5 and 6 show the possibility of admixing room air in a simple manner into the supply air duct (20) - for example to reduce the temperature difference between room air and supply air - via an air mixing device (28) to the supply air supplied via the supply air supply line (12) , which is removed from the room air via an air outlet opening (28.1).
  • the supply air premixed with room air in this way is then passed via the overflow opening (22) into the adjacent air distribution duct.
  • the air distribution duct (30) (FIG. 7)
  • the air flows in through the overflow opening (22) and, if there is a need, reaches an inserted cooling plate (25) with heat exchanger surfaces protruding into the air flow.
  • This cooling plate (25) which is connected to a cooling supply via coolant connecting lines (25.1 and 25.2), can also serve as ceiling cooling in addition to air cooling. It goes without saying that the geometry of the supply air distribution duct must be adapted to these requirements. It goes without saying that such cooling (or heating) elements can be used in the area of the air transport channels. The supply air thus prepared then flows out via air outlets shown as swirl outlets (32).

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Duct Arrangements (AREA)
  • Pipeline Systems (AREA)
  • Ventilation (AREA)
EP19890121790 1988-12-20 1989-11-25 Système de distribution d'air Withdrawn EP0374527A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883842814 DE3842814A1 (de) 1988-12-20 1988-12-20 Luftverteilsystem
DE3842814 1988-12-20

Publications (2)

Publication Number Publication Date
EP0374527A2 true EP0374527A2 (fr) 1990-06-27
EP0374527A3 EP0374527A3 (fr) 1991-12-04

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EP19890121790 Withdrawn EP0374527A3 (fr) 1988-12-20 1989-11-25 Système de distribution d'air

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EP (1) EP0374527A3 (fr)
DE (1) DE3842814A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5554071A (en) * 1991-03-20 1996-09-10 Abb Flakt Oy Air-change system for a multi-storey building
GB2493170A (en) * 2011-07-26 2013-01-30 Silentair Group Ltd Ducting unit and an air conditioning system incorporating the same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10053495A1 (de) * 2000-10-27 2002-05-08 El Sakkaf Sherif Klimatisierungssystem
DE10214643A1 (de) * 2002-04-02 2003-10-23 Pms Klimatechnik Gmbh Rasterdecke mit Kühl-, Heiz- und Lünftungsfunktion

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2988980A (en) * 1957-07-01 1961-06-20 Hans R Tschudin Heat distribution panel
US3202078A (en) * 1962-07-20 1965-08-24 R C Mahon Company Combined structural and air conditioning system for buildings
DE2006928A1 (de) * 1970-02-16 1971-09-30 Kessler & Luch Kg Deckenluftauslaß für Raumbelüftungsanlagen
DE2649279A1 (de) * 1976-10-29 1978-05-03 Alfred Korsch Unterhalb einer konstruktionsdecke anzubringende rasteranordnung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3440947A (en) * 1966-09-19 1969-04-29 Titus Mfg Corp Combination diffuser and false ceiling suspension systems

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2988980A (en) * 1957-07-01 1961-06-20 Hans R Tschudin Heat distribution panel
US3202078A (en) * 1962-07-20 1965-08-24 R C Mahon Company Combined structural and air conditioning system for buildings
DE2006928A1 (de) * 1970-02-16 1971-09-30 Kessler & Luch Kg Deckenluftauslaß für Raumbelüftungsanlagen
DE2649279A1 (de) * 1976-10-29 1978-05-03 Alfred Korsch Unterhalb einer konstruktionsdecke anzubringende rasteranordnung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5554071A (en) * 1991-03-20 1996-09-10 Abb Flakt Oy Air-change system for a multi-storey building
GB2493170A (en) * 2011-07-26 2013-01-30 Silentair Group Ltd Ducting unit and an air conditioning system incorporating the same
WO2013014443A1 (fr) 2011-07-26 2013-01-31 Silentair Group Limited Unité de climatisation, système et procédé de refroidissement de chauffage
GB2493170B (en) * 2011-07-26 2017-04-12 Silentair Group Ltd Improved air conditioning units

Also Published As

Publication number Publication date
EP0374527A3 (fr) 1991-12-04
DE3842814A1 (de) 1990-06-21

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