EP0298276B1 - Dispositif pour ventiler des locaux par un voile à air devant une fenêtre - Google Patents

Dispositif pour ventiler des locaux par un voile à air devant une fenêtre Download PDF

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Publication number
EP0298276B1
EP0298276B1 EP88109329A EP88109329A EP0298276B1 EP 0298276 B1 EP0298276 B1 EP 0298276B1 EP 88109329 A EP88109329 A EP 88109329A EP 88109329 A EP88109329 A EP 88109329A EP 0298276 B1 EP0298276 B1 EP 0298276B1
Authority
EP
European Patent Office
Prior art keywords
air
slots
supply air
window
housing
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.)
Expired - Lifetime
Application number
EP88109329A
Other languages
German (de)
English (en)
Other versions
EP0298276A2 (fr
EP0298276A3 (en
Inventor
Hermann Kurrle
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.)
Schako KG
Original Assignee
Schako Metallwarenfabrik Ferdinand Schad KG
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 Schako Metallwarenfabrik Ferdinand Schad KG filed Critical Schako Metallwarenfabrik Ferdinand Schad KG
Priority to AT88109329T priority Critical patent/ATE75023T1/de
Publication of EP0298276A2 publication Critical patent/EP0298276A2/fr
Publication of EP0298276A3 publication Critical patent/EP0298276A3/de
Application granted granted Critical
Publication of EP0298276B1 publication Critical patent/EP0298276B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F24F9/00—Use of air currents for screening, e.g. air curtains
    • 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
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser

Definitions

  • the invention relates to a window curtain for air conditioning rooms according to the preamble of claim 1.
  • Window curtain devices are arranged below the windows on the window sill and blow the supply air upwards along the window surface in the manner of a veil.
  • the supply air curtain shields the window area, which generally forms a cold bridge.
  • the supply air blown upwards into the room along the window surface flows along the ceiling and sinks into the room as soon as the jet speed is reduced. Since the supply air jets that are blown in upwards take room air from the occupied zone by induction, a roller-like air flow results in the room, which leads to good and quick ventilation of the room.
  • Window curtain devices for two-channel systems are known, to which cold and warm supply air is supplied, the mixing ratio of cold air and warm air being able to be adapted to the respective requirements. With all mixing ratios, the same total amount of air can be blown into the room, so that the blown out air volume flow and the jet speed for optimal flushing of the room can be designed.
  • Window curtains of this type are structurally relatively complex and require a complex two-channel system.
  • window curtain devices for single-channel systems which only blow out supply air and in which the adaptation to the respective room conditions is associated with a change in the air volume flow blown in.
  • a window curtain of this type is known from GB-A-1 473 515. With this window curtain, the supply air is blown into a housing via nozzles and sucks room air into this housing through openings that are adjustable in cross section by induction. The supply air / room air mixture emerges from the housing upwards through a grille which consists of a large number of outlet openings arranged closely next to one another with a large total outlet cross section. A constant supply air volume is supplied through the nozzles.
  • the amount of room air sucked into the housing by induction is changed by adjusting the openings to adjust the temperature of the supply air / room air mixture to the desired operating conditions. Because of the large outlet cross-section of the grille, the flow velocity of the air flow emerging upward from the window curtain changes depending on the amount of room air sucked in and thus on the mixture ratio of supply air / room air or the temperature conditions of the room. The change in the flow rate means a different flushing of the room.
  • the induction effect of the air flow emerging from the window curtain at the top is minimal because, on the one hand, the flow velocity is low and, on the other hand, the room air cannot penetrate between the individual jets emerging closely next to one another.
  • an air supply device which supplies supply air directly to a work table.
  • This device does not produce an air curtain that is blown upwards, as is the case with window curtain devices, but rather the air flows out diverging at a low speed.
  • the air outlet of the device consists of an outlet grille with outlet slots arranged at a close distance from one another and arranged transversely to the longitudinal extent of the housing. The mutual distance between the outlet slots is not greater than their width, so that there is a large total outlet cross section. The air therefore exits only with a small flow impulse and the room air cannot penetrate between the air jets emerging from the individual outlet slots, so that only a very slight induction effect occurs. An air purging of the room, as is typical for window curtains, is not effected.
  • the invention has for its object to provide a window curtain, in which only supply air is blown out, so that even with changes in the supply air volume, good mixing with the room air and a stable flushing of the room takes place.
  • the blowout slots of the window curtain are arranged transversely to the longitudinal extent of the housing.
  • the supply air is supplied through the blow-out slots at high speed, so that a stable air roller is formed even when the supply air volume flow changes, and in particular also with small supply air quantities, which leads to a good flushing of the room.
  • a sufficiently large amount of room air is taken along by the supply air jets even in the case of smaller supply air quantities in order to maintain this stable air roll.
  • Rectifiers are provided in the housing of the window curtain between the supply air connection and the discharge slots in order to distribute the supply air supplied at a relatively high pressure evenly over the exhaust slots and to ensure a low-noise outflow of the supply air.
  • the window curtain is extremely simple, so that it is very inexpensive to manufacture.
  • the device can be manufactured with small dimensions, in particular with a shallow depth. It is therefore particularly suitable for cases in which there is only a limited space available for installation. Because of its small size, the window curtain is particularly suitable for retrofitting. This has the advantageous effect that only a single supply air line with a small cross section is required.
  • the window curtain which is installed in a window parapet 10, has a flat, elongated, upright, box-shaped housing 12.
  • the housing 12 is composed of a lower box-shaped housing part 14 with a rectangular cross section, on which an upper housing part 16 with an approximately square cross section is placed.
  • the lower housing part 14 and the upper housing part 16 have a U-shaped profile, the upper housing part 16 having its side faces being pushed onto the side faces of the lower housing part 14.
  • Lateral plates 18 connect the two housing parts.
  • Blow-out slots 20 are provided in the elongated horizontal upper side of the upper housing part 16.
  • the outlet slots 20 run perpendicular to the longitudinal extent of the housing and are distributed over the entire longitudinal extent at the same mutual distance.
  • the distance between the blow-out slots 20 is a multiple of their width.
  • the width of the blow-out slots 20 is between approximately 3 mm and 10 mm.
  • the mutual spacing of the slots is approximately 4 to 20 times their width.
  • the blow-out slots have a width of 5 mm and a mutual spacing of 75 mm.
  • the housing 12 is provided at the bottom with a supply air connection 22 which is used as a connector in the bottom surface or in the side surface.
  • two rectifiers are used in the flow path of the supply air from the supply air connection 22 to the exhaust slots 20, which consist of perforated plates 24 and 26.
  • the perforated plates 24 and 26 are inserted between the side walls of the housing 12 and fastened to them with bent flanges.
  • the lower perforated plate 24 is designed in the form of a circular arc and bulges over the supply air connection 22.
  • the supply air entering through the supply air connection 22 is distributed uniformly in all directions through this lower perforated plate 24.
  • the upper perforated plate 26 is in the area of the connection arranged from the lower housing part 14 and upper housing part 16 and extends parallel to the top of the housing having the blowout slots 20 over its entire longitudinal extent.
  • the upper perforated plate 26 brings about a uniform distribution of the supply air flowing from the lower housing part 14 over all blowout slots 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Duct Arrangements (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)
  • Advancing Webs (AREA)
  • Building Environments (AREA)

Claims (5)

  1. Appareil à rideau d'air pour fenêtres pour la climatisation de locaux, comprenant un carter plat, allongé et placé sur le chant, un raccord d'amenée d'air du carter et des fentes de soufflage sur la face supérieure du carter, caractérisé en ce que les fentes de soufflage (20) sont orientées transversalement à l'extension longitudinale du carter (12) et disposées les unes par rapport aux autres à une distance égale à 4 à 20 fois leur largeur.
  2. Appareil à rideau d'air pour fenêtres selon la revendication 1, caractérisé en ce que la distance entre les fentes de soufflage (20) est de 10 à 20 fois leur largeur.
  3. Appareil à rideau d'air pour fenêtres selon l'une des revendications 1 ou 2, caractérisé en ce que la largeur des fentes de soufflage (20) est de 3 mm à 10 mm, de préférence d'environ 5 mm.
  4. Appareil à rideau d'air pour fenêtres selon la revendication 1, caractérisé en ce qu'au moins un dispositif de redressement est prévu à l'intérieur du carter (12) entre le raccord d'amenée d'air (22) et les fentes de soufflage (20).
  5. Appareil à rideau d'air pour fenêtres selon la revendication 4, caractérisé en ce qu'il comprend comme dispositif de redressement deux tôles perforées (24, 26) dont au moins celle située plus près des fentes de soufflage (20) est disposée sensiblement parallèlement à la face supérieure du carter (12).
EP88109329A 1987-07-07 1988-06-11 Dispositif pour ventiler des locaux par un voile à air devant une fenêtre Expired - Lifetime EP0298276B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88109329T ATE75023T1 (de) 1987-07-07 1988-06-11 Fensterschleiergeraet zur klimatisierung von raeumen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8709348U DE8709348U1 (de) 1987-07-07 1987-07-07 Fensterschleiergerät zur Klimatisierung von Räumen
DE8709348U 1987-07-07

Publications (3)

Publication Number Publication Date
EP0298276A2 EP0298276A2 (fr) 1989-01-11
EP0298276A3 EP0298276A3 (en) 1990-06-13
EP0298276B1 true EP0298276B1 (fr) 1992-04-15

Family

ID=6809808

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88109329A Expired - Lifetime EP0298276B1 (fr) 1987-07-07 1988-06-11 Dispositif pour ventiler des locaux par un voile à air devant une fenêtre

Country Status (3)

Country Link
EP (1) EP0298276B1 (fr)
AT (1) ATE75023T1 (fr)
DE (2) DE8709348U1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4039246A1 (de) * 1990-12-08 1992-06-11 Schako Metallwarenfabrik Verfahren zum herstellen eines quellauslasses

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR765149A (fr) * 1933-02-27 1934-06-02 Tunzini Ets Appareil distributeur-diffuseur pour la ventilation des locaux et applications analogues
SE376296B (fr) * 1973-05-07 1975-05-12 Svenska Flaektfabriken Ab
DE2716993A1 (de) * 1977-04-18 1978-10-26 Schmid Reuter Ingenieurgesells Vorrichtung zur belueftung und/oder klimatisierung von raeumen

Also Published As

Publication number Publication date
DE8709348U1 (de) 1987-09-10
ATE75023T1 (de) 1992-05-15
EP0298276A2 (fr) 1989-01-11
DE3870055D1 (de) 1992-05-21
EP0298276A3 (en) 1990-06-13

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