WO1995001537A1 - Sortie d'air pour installations de ventilation - Google Patents

Sortie d'air pour installations de ventilation Download PDF

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Publication number
WO1995001537A1
WO1995001537A1 PCT/EP1994/002013 EP9402013W WO9501537A1 WO 1995001537 A1 WO1995001537 A1 WO 1995001537A1 EP 9402013 W EP9402013 W EP 9402013W WO 9501537 A1 WO9501537 A1 WO 9501537A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
outlet
nozzle
field
air outlet
Prior art date
Application number
PCT/EP1994/002013
Other languages
German (de)
English (en)
Inventor
Adam Bernhardt
Henryk Bernhardt
Georg Bernhardt
Original Assignee
Adam Bernhardt
Henryk Bernhardt
Georg Bernhardt
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 Adam Bernhardt, Henryk Bernhardt, Georg Bernhardt filed Critical Adam Bernhardt
Priority to EP94919647A priority Critical patent/EP0657014B1/fr
Priority to DE59407124T priority patent/DE59407124D1/de
Priority to DK94919647T priority patent/DK0657014T3/da
Publication of WO1995001537A1 publication Critical patent/WO1995001537A1/fr

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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/26—Arrangements for air-circulation by means of induction, e.g. by fluid coupling or thermal effect
    • 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 an air outlet for a ventilation system for ventilation of rooms, in particular hall-like rooms, which is arranged in each case at the outlet of an air supply duct and with at least one propelling nozzle for a propelling air jet and an exit field adjacent to the propelling nozzle for trailing air to be extracted from the air guiding duct , which has a plurality of outlet openings.
  • the invention has for its object to improve an air outlet of the type mentioned in such a way that the kinetic energy provided by the propellant nozzle is essentially only available for the acceleration and transport of the drag air, without this resulting in a significant vortex the room air is induced.
  • this object is achieved in that at least one lateral shield, which extends approximately in the beam direction and which at least partially covers the outlet region of the driving nozzle against the ingress of room air, is assigned to at least the driving nozzle.
  • the propellant nozzle usually several propellant nozzles are assigned to each air outlet, the result is that the kinetic energy of the air jets emerging from the propellant nozzles primarily extracts drag air from the exit field and practically all of the air made available via the air supply duct to far in the to be ventilated
  • the arrangement is expediently such that about 10 to 30% of the amount of air to be supplied via the air supply point is introduced into the room via the driving nozzle and correspondingly 90 to 70% via the outlet field. Since practically no induction is exerted on the room air at rest, up to twenty times the volume of the room per unit time can be circulated draft-free only via the air outlet. While it is fundamentally possible to effect the shielding by means of a guide plate or the like. In one embodiment of the invention it is provided that the shielding is at least partially formed by a channel-like extension of the air outlet which projects beyond the outlet plane of the propellant nozzle in the jet direction and which at least has a part of the exit field for the drag air.
  • the propellant air jets emerging from the propellant nozzles can at least partially expand and, because of the pressure conditions within the channel-like extension, practically exclusively drag air from the exit field is entrained by the propellant air jets. It is only at a greater distance from the exit field that room air is induced, albeit slightly. It is particularly expedient here if the exit field is designed in the form of a channel-like extension and at least partially surrounds the driving nozzle.
  • the exit field is at least partially oriented substantially perpendicular to the jet axis of the driving nozzle.
  • At least a part of the exit field is oriented at an angle to the jet axis of the driving nozzle, the exit openings facing the jet axis.
  • This arrangement improves the mixing of the towing air with the driving air. It is expedient here if the outlet plane of the outlet openings of the outlet field are aligned approximately parallel to the outlet plane of the driving nozzle.
  • the driving nozzle is mounted so as to be adjustable with respect to its jet axis.
  • the advantageous possibility given to meet different operating requirements with standard components When the cold air is fed into the space to be ventilated, the propellant nozzle will be arranged below the exit field, the jet axis of the propellant nozzle then being deflected somewhat upward, the exit field being expediently arranged above the propellant nozzle and thus the entrained air from the propellant jet the room is "carried".
  • the arrangement is expediently made the other way round, so that one above the
  • the free passage cross section of the part of the outlet field which is to be attributed to the driving nozzle is larger than that of the driving nozzle, but has a higher passage resistance.
  • the exit field is expediently formed by a perforated plate.
  • the backflow resistance of such a perforated plate is sufficient even in the case of relatively large individual diameters of the holes to create the necessary differences in the penetration resistance between the driving nozzle and the exit field.
  • Another advantage here is that large-area exit fields can be created in a simple manner, into which corresponding propulsion nozzles are then inserted.
  • FIG. 1 is a side view of an air outlet, partially in section
  • Fig. 2 is an end view of the air outlet acc. 1 in an embodiment with several driving nozzles
  • Fig. 3 shows another arrangement of the air outlet acc. Fig. 2,
  • FIG. Fig. 1 shows another embodiment of the air outlet according to FIG. Fig. 1
  • Air outlet acc. 1 with only one driving nozzle, partly in section,
  • Fig. 6 is an end view of the air outlet acc. Fig. 5,
  • FIG. 7 shows a further embodiment of an air outlet, partly in section
  • Fig. 8 is an end view of the air outlet acc. Fig. 7,
  • FIG. 9 shows in section a modification of the air outlet according to FIG. Fig. 7.
  • the air outlet shown in a side view in FIG. 1 and in a front view in FIG. 2 is designed as a closing component 1 for an outlet at an air supply duct 2.
  • the air outlet is essentially formed from a plurality of driving nozzles 3 for generating driving jets, which can be pivoted, so that the jet axis 1 of the driving jet generated in each case can be adjusted in its angular position.
  • the driving nozzles 3 are assigned an exit field 4 for trailing air, which is formed, for example, by a perforated plate and which is located above the level of the driving nozzles 3 in the exemplary embodiment shown. In Fig. 2 the perforated plate is shown schematically by the cross hatching shown.
  • the exit field is designed so that its surface extends not only above the outlet nozzles 3 but also clearly on both sides into the room. If supply air is now applied to the air supply duct 2, part of this air enters the room through the propellant nozzles 3 in the form of several propellant jets. The other part of the air is introduced into the room via the outlet field.
  • the passage cross sections of the driving nozzles on the one hand and the total cross section of the outlet field 4 on the other hand and the corresponding flow resistances of the driving nozzles 3 on the one hand and the outlet field 4 on the other hand are matched to one another in such a way that the flow velocity of the driving jets in the region of the nozzle mouth is approximately two is up to five times as high as the towing air emerging from the exit field 4.
  • Such an air outlet is introduced into the room to be ventilated at a corresponding distance above the floor, in the case of a workshop to be ventilated, for example at a height of over three meters into the room.
  • a shield 5 for example in the form of a cover plate, so that primarily the trailing air emerging from the exit field 4 is carried along by the propellant jets into the room.
  • the propellant jets can expand upwards and take almost exclusively entrained air out of the exit field, with the entrained air only mixing to a small extent room air into the supply air introduced in this way due to the relatively low flow velocity.
  • the speeds can be set so that the arrangement acts like a source ventilation.
  • a flow velocity of the air in the driving jets of, for example, 5 to 20 m / sec and a flow velocity the drag air of 1 to 4 / sec, measured in each case in the outlet plane, then results in isothermal operation an average speed of the supply air at a distance of about 5 m from the relevant outlet surface of the air outlet of about 30-120 cm / sec.
  • the drag air is carried into the room by the propulsion jets.
  • the air outlet can also be arranged in reverse, which is particularly useful when warm air is supplied to a high hall.
  • the shield 5 is then arranged above, the beam axis 7 is pivoted downward, so that the warm air emerging from the outlet rock 4 is "pressed" down into the room.
  • a shield of the propellant nozzle 3 is provided in the form of a channel-like extension 6, the end face of which forms the exit field 4, so that the exit plane of the exit field 4 is the exit plane of the propellant nozzle 3 protrudes in the beam direction.
  • FIGS. 5 and 6 an embodiment is shown with a single nozzle that has a narrow construction, the outlet field 4 being arranged only above the driving nozzle 3.
  • the shield 5 which covers the area of the driving nozzle downwards, a corresponding cover 5.1 is also provided on both sides, which also prevents the lateral entry of room air.
  • the embodiment shown in FIGS. 5 and 6 can also be arranged according to FIG. Fig. 3 to be built in.
  • FIG. 7 and 8 is a further embodiment of the construction 'acc. Fig. 4 in a vertical section (Fig .. 7) and in one
  • the exit field in the form of a channel-like extension surrounds the driving nozzles 3 overall in a channel-like manner, this embodiment also being able to be designed on the basis of a driving nozzle.
  • the channel-like extension 6, which at the same time forms the shielding of the driving nozzle 3, is designed in such a way that the exit plane of the exit field 4 is oriented at an angle to the jet axis 7, the exit openings of the exit field facing the jet axis 7.
  • the outlet field 4 in the form of a perforated plate, so that the outlet openings are directed towards the jet axis.
  • the outlet openings of the outlet field 4 it is also possible, as shown here, for the outlet openings of the outlet field 4 to be in the form of a multiplicity of small scoops 8, the outlet planes of which are arranged approximately parallel to the outlet plane of the driving nozzle 3.
  • the shield 5 for example in the embodiments according to FIGS. 1 to 4, can be changed in the orientation to the beam axis, in particular pivotally connected to the end component 1. This means that even after installation
  • the shield 5 can also be formed by a plate provided with perforations at least over part of its surface instead of a full-surface plate. If, for example, the perforation is arranged in the region of the free end edge of the shield, air can already be mixed in from the shielded region.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)
  • Duct Arrangements (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Air-Flow Control Members (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

L'invention concerne une sortie d'air pour une installation de ventilation de locaux, notamment de halls, qui est placée à la sortie d'un canal d'amenée d'air (1) et qui comporte au moins un ajutage (3) diffusant un jet d'air et un champ de sortie (4) adjacent à l'ajutage diffuseur (3), qui est destiné à extraire l'air du canal d'amenée (1) et qui comprend une pluralité d'orifices de sortie. Il est prévu d'adjoindre à l'ajutage diffuseur (3) au moins un élément de protection (5) qui s'étend latéralement approximativement dans le sens du jet, qui recouvre au moins partiellement la zone de sortie de l'ajutage diffuseur (3) et qui empêche l'air ambiant d'entrer. L'élément protecteur (5) permet à l'énergie cinétique dégagée par les jets d'air qui sortent des ajutages diffuseurs, d'extraire l'air avant tout hors de la zone de sortie (4).
PCT/EP1994/002013 1993-06-30 1994-06-21 Sortie d'air pour installations de ventilation WO1995001537A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP94919647A EP0657014B1 (fr) 1993-06-30 1994-06-21 Sortie d'air pour installations de ventilation
DE59407124T DE59407124D1 (de) 1993-06-30 1994-06-21 Luftaustritt für belüftungsanlangen
DK94919647T DK0657014T3 (da) 1993-06-30 1994-06-21 Luftudløb til ventilationsanlæg

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEG9309677.1U 1993-06-30
DE9309677U DE9309677U1 (de) 1993-06-30 1993-06-30 Luftaustritt für Belüftungsanlagen

Publications (1)

Publication Number Publication Date
WO1995001537A1 true WO1995001537A1 (fr) 1995-01-12

Family

ID=6894986

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1994/002013 WO1995001537A1 (fr) 1993-06-30 1994-06-21 Sortie d'air pour installations de ventilation

Country Status (6)

Country Link
EP (1) EP0657014B1 (fr)
AT (1) ATE172532T1 (fr)
DE (2) DE9309677U1 (fr)
DK (1) DK0657014T3 (fr)
PL (1) PL307569A1 (fr)
WO (1) WO1995001537A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19626884A1 (de) * 1996-07-04 1998-01-08 Schako Metallwarenfabrik Luftauslaß
EP0924474A2 (fr) 1997-12-20 1999-06-23 Adam Bernhardt Sorte d'air pour une installation de ventilation
EP1314937A3 (fr) * 2001-11-24 2003-09-17 TKT Facility Engineering GmbH Sortie d'air
WO2004042286A1 (fr) * 2002-11-08 2004-05-21 Young-Youl Yun Systeme de conditionnement d'air en vent naturel
WO2005072038A1 (fr) * 2004-01-27 2005-08-04 Rc Group Spa Conditionneur a deplacement avec distribution d'air par jet d'air
NO334985B1 (no) * 2008-06-16 2014-08-18 Aet Arbeidsmiljoe Og Energiteknikk As Anordning ved tilluftstak

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2851046A1 (de) * 1978-11-25 1980-06-04 Walter Ing Grad Hirsch Luftauslassvorrichtung fuer raumklimatisierungs- und belueftungsanlagen
DE3302340A1 (de) * 1983-01-25 1984-07-26 Enig Energieberatung Innovation Gmbh, 6300 Giessen Lueftungs- und klimaanlage

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4876949A (en) * 1988-04-18 1989-10-31 Thermo-Aire Systems, Inc. Low temperature air induction diffuser
DE3838419A1 (de) * 1988-11-12 1990-05-17 Schako Metallwarenfabrik Duesenauslass
DD293416A5 (de) * 1990-04-06 1991-08-29 Hochschule Fuer Seefahrt Warnemuende/Wustrow,De Luftauslass mit induktionswirkung der raumluft ohne zusaetzliche energie

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2851046A1 (de) * 1978-11-25 1980-06-04 Walter Ing Grad Hirsch Luftauslassvorrichtung fuer raumklimatisierungs- und belueftungsanlagen
DE3302340A1 (de) * 1983-01-25 1984-07-26 Enig Energieberatung Innovation Gmbh, 6300 Giessen Lueftungs- und klimaanlage

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19626884A1 (de) * 1996-07-04 1998-01-08 Schako Metallwarenfabrik Luftauslaß
DE19626884C2 (de) * 1996-07-04 2000-07-20 Schako Metallwarenfabrik Luftauslaß
EP0924474A2 (fr) 1997-12-20 1999-06-23 Adam Bernhardt Sorte d'air pour une installation de ventilation
EP0924474A3 (fr) * 1997-12-20 2000-11-08 Adam Bernhardt Sorte d'air pour une installation de ventilation
EP1314937A3 (fr) * 2001-11-24 2003-09-17 TKT Facility Engineering GmbH Sortie d'air
WO2004042286A1 (fr) * 2002-11-08 2004-05-21 Young-Youl Yun Systeme de conditionnement d'air en vent naturel
WO2005072038A1 (fr) * 2004-01-27 2005-08-04 Rc Group Spa Conditionneur a deplacement avec distribution d'air par jet d'air
NO334985B1 (no) * 2008-06-16 2014-08-18 Aet Arbeidsmiljoe Og Energiteknikk As Anordning ved tilluftstak

Also Published As

Publication number Publication date
EP0657014B1 (fr) 1998-10-21
DE59407124D1 (de) 1998-11-26
DK0657014T3 (da) 1999-07-12
PL307569A1 (en) 1995-05-29
DE9309677U1 (de) 1994-11-10
ATE172532T1 (de) 1998-11-15
EP0657014A1 (fr) 1995-06-14

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