EP0464228B1 - Düsenkasten - Google Patents

Düsenkasten Download PDF

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Publication number
EP0464228B1
EP0464228B1 EP90103798A EP90103798A EP0464228B1 EP 0464228 B1 EP0464228 B1 EP 0464228B1 EP 90103798 A EP90103798 A EP 90103798A EP 90103798 A EP90103798 A EP 90103798A EP 0464228 B1 EP0464228 B1 EP 0464228B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
nozzle box
hole
nozzles
connection piece
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
EP90103798A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0464228A1 (de
Inventor
Gerd-Eugen Dr.-Ing. Schaal
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 Lufttechnische GmbH
Original Assignee
LTG Lufttechnische 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 LTG Lufttechnische GmbH filed Critical LTG Lufttechnische GmbH
Priority to AT9090103798T priority Critical patent/ATE105068T1/de
Publication of EP0464228A1 publication Critical patent/EP0464228A1/de
Application granted granted Critical
Publication of EP0464228B1 publication Critical patent/EP0464228B1/de
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
    • 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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/01—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station in which secondary air is induced by injector action of the primary air

Definitions

  • the invention relates to a nozzle box for induction devices of air conditioning systems according to the preamble of claim 1.
  • Induction devices are parts of high-pressure air conditioning systems, (Recknagel / Sprenger / Hönmann "Taschenbuch für Schuung + Klima Kunststoff 88/89", R. Oldenbourg Verlag Kunststoff, Vienna, p. 1047).
  • a nozzle box for an induction device of a high pressure air conditioning system is known.
  • a wall with holes is provided in the nozzle box, into which nozzles are used to blow out primary air.
  • the nozzles are made of metal and each has an annular shoulder at its base and a short nozzle attached to it. The respective nozzle is held on the air box by means of this nozzle.
  • the invention has for its object to provide a nozzle box of the type mentioned, the nozzles are inexpensive to mount on the nozzle box and can also be replaced in a simple manner.
  • Attaching the nozzles to the nozzle box is extremely simple.
  • the individual nozzle only has to be inserted with its nozzle into the relevant hole in the nozzle box and then it will rotated into an angular position in which it is pressed against the edge of the hole in question in at least two places, preferably holding itself frictionally in the hole of the nozzle box itself.
  • the annular shoulder of the nozzle can rest directly on the outside of the relevant wall of the nozzle box, which generally already has a sufficient outside Sealing of the nozzle on the nozzle box is achieved. If necessary, however, a seal can also be interposed between the annular shoulder of the nozzle and the relevant wall of the nozzle box.
  • the nozzles are also easy to replace due to the non-circular design.
  • the nozzles are non-flammable and meet high fire protection requirements. They are also cheap to manufacture. They can also be produced with thin wall thicknesses, which is already noise-reducing and longitudinal noise grooves or longitudinal ribs, which are even more strongly noise-reducing on the inside or outside, are also molded onto them.
  • Nozzle boxes according to the invention are suitable for any induction devices, irrespective of whether they are induction devices with heat exchangers or induction devices without heat exchangers.
  • the measure according to claim 2 can preferably be provided.
  • the nozzle then requires no additional attachment to the wall of the nozzle box in question.
  • the measure according to claim 3 can expediently be provided. It shows that in any case the frictional connection between the nozzle and the relevant wall of the nozzle box cannot come loose by itself. If, on the other hand, the angle between the respective tangents mentioned in claim 3 is greater than the angle of friction of the rest of the material pairing of the material of the hole edge and the nozzle, then there is a risk that the nozzle can rotate by itself in the direction that releases the friction connection.
  • the angle between the relevant tangents mentioned in claim 3 is not smaller than the said friction angle of rest, but somewhat larger, according to claim 3.
  • it is then advisable to take special measures to prevent the nozzle from accidentally loosening itself which can be done, for example, by using a pin or a screw to flange the nozzle with the relevant wall of the nozzle box in the intended angular position of the nozzle. which is releasably inserted in mutually aligned bores of the flange and the relevant wall of the nozzle box, connects or that one provides other means for securing the nozzle against rotation.
  • the induction device 10 shown in FIG. 1 has a housing 11 with a bottom-side secondary air inlet 12, a water-side controlled heat exchanger 13, a nozzle box 14 with nozzles (primary air nozzles) 15 and an air outlet shaft 16, through which the primary air and the secondary air drawn in and mixed with it (room air) flows out into the room in question.
  • the invention is also applicable to induction devices which each have a plurality of heat exchangers or no heat exchangers.
  • nozzle boxes according to the invention can also be used with any other induction devices, in particular also with those in which the cooling or heating output is controlled on the air side, for example by means of flaps.
  • the nozzle box 14 here has on its upper wall 17 two rows of nozzles 15 used for blowing out primary air jets. Each row has a more or less large number of nozzles 15, depending on the length of the nozzle box 14.
  • the nozzle box 14 has a connection 19 for a tube through which primary air, which is processed in its interior in a climate control center, can be introduced, through the nozzles 15 is blown out into the interior of the induction device 10 and here sucks in secondary air from the relevant building room, and the primary air with the secondary air is then blown out as usual in the relevant building room for its air conditioning.
  • the single nozzle 15 is made of metal, preferably made of aluminum or an aluminum alloy. It can be produced particularly inexpensively by drawing, casting or extrusion. However, if necessary, they can also be produced in another way, for example by round hammers, machining or the like.
  • FIG. 2 shows a longitudinal section through a nozzle 15 according to an exemplary embodiment of the invention, as inserted into the relevant wall 17 of the nozzle box 14, which is shown in sections.
  • a foot 20 which forms its upstream end section, it has an annular flange 21 with which it sits tightly on the outside 23 of the wall 17.
  • a short connecting piece 22 which has the air inlet mouth 50 of the nozzle 15 and is inserted into the associated hole 24 of the wall 17 of the nozzle box 14 and is clamped in this hole 24 in a self-locking manner, which is explained in more detail below becomes.
  • this connecting piece 22 penetrates the hole 24 completely and projects over it somewhat into the interior of the nozzle box 14, as shown, which is expedient.
  • the annular flange 21 abutting the wall 17 seals the hole 24 sufficiently from the outside so that no primary air can flow out between the nozzle and the edge of the hole 24, or at most negligibly small amounts of air.
  • an annular seal 25 can also be inserted between the annular flange 21 and the wall 17, as shown in an exemplary embodiment in FIG. 6.
  • annular shoulder 24 'forming the annular flange 21 closes up by far the longest part 26 of the nozzle 15.
  • the passage channel 27 of the nozzle 15 has a rounded inlet funnel 29 and then a circular cylindrical region 30, then a region 31 which tapers essentially conically in the downstream direction and then has a constant clear cross section the end region 32, which extends as far as the downstream outlet opening 33 of the nozzle 15 is enough.
  • a number of longitudinal grooves 34 are also formed, which serve to reduce the noise of the blown-out primary air jet by shortening the vortex streets of the outflowing jet.
  • the outer circumference of the nozzle 15 can be rotationally symmetrical with respect to the longitudinal axis of the nozzle 15, with the exception of its nozzle 22 and possibly its thickened short longitudinal region 51.
  • at least one pair of mutually parallel surfaces are also formed on the outside of the nozzle 15, which serve to attach a key which serves to turn the nozzle 15 into its self-holding clamping position in the hole 24 and which are expediently attached to the longitudinal region 51 which connects to the ring flange 21 connects upwards, can be provided.
  • this circumferential contour 35 consists of two semicircles 36 of equal radii R1, which are connected to one another by two short straight lines 37 parallel to one another, the length of which is denoted by L.
  • the mutually parallel diameters 38 of the two semicircles 36 are indicated by dash-dotted lines.
  • the non-circular circumferential contour 39 shown in FIG. 4 of the cylindrical, but not circular-cylindrical, non-circular hole 24 of the wall 17 is composed of two circular arcs 40 of the same radius R2, whereby, as shown, the centers of curvature of these radii R2 are not at the center of this circumferential contour 39 Instead, for the left circular arc 40, the center of curvature is located on the transverse axis 41 of this circumferential contour 39, which is perpendicular to the longitudinal axis 42 and is shown in dash-dotted lines, at a distance a / 2 to the right of this center representing the intersection of the axes 41, 42 and for the right-hand side Circular arc 40 on the transverse axis 41 on the left side of this center at the same distance a / 2.
  • the nozzle 15 To attach the nozzle 15 to the wall 17 of the nozzle box 14, this is inserted with its socket 22 into the hole 24 until the annular shoulder 24 'of the ring flange 21 is tight on this wall 17.
  • the socket 22 When the nozzle 15 is inserted, the socket 22 is in an angular position relative to the hole 24, in which the socket 22 can be inserted into the hole 24 without or without substantial force.
  • the nozzle 15 is preferably rotated by means of a torque wrench about its longitudinal axis into a relative angular position to the hole 24, which is provided such that self-locking clamping of the connector 22 occurs in the hole 24, as a result of which the nozzle 15 is attached to the wall 17 in a frictionally releasable manner, without any other attachment or additional attachment.
  • the angle b shown in FIG. 5 is smaller than the angle of friction of the rest between the material pairings of the nozzle 15 and the edge of the hole 24 in the wall 17 of the nozzle box 14.
  • This angle b corresponds to the angle between the tangents 45, 46 to the circumferential contour 35 of the socket 22 and to the circumferential contour 39 of the hole 24 at each of the two points of strongest clamping between the socket 22 and the edge of the hole 24.
  • the nozzle 15 is made of aluminum or an aluminum alloy and the wall of the nozzle box 14 is made of sheet steel.
  • the nozzle 15 can also consist of other metals, for example steel.
  • the out-of-roundness of the circumferential contour of the connector 22 and the associated hole 24 can also be different from that shown in FIGS. 3-5.
  • the circumferential contours can be elliptical, oval, wavy or have other suitable shapes.
  • the peripheral contours shown are particularly cheap and easy to manufacture.
  • the out-of-roundness of the connecting piece 22 and the edge of the hole 24 can preferably be provided such that a total of only two diametrically opposed, spaced-apart contact surfaces between the connecting piece 22 and the edge of the hole 24 result.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles (AREA)
  • Duct Arrangements (AREA)
EP90103798A 1989-02-28 1990-02-27 Düsenkasten Expired - Lifetime EP0464228B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT9090103798T ATE105068T1 (de) 1989-02-28 1990-02-27 Duesenkasten.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE8902355U DE8902355U1 (de) 1989-02-28 1989-02-28 Düsenkasten
DE3906210 1989-02-28
DE3906210A DE3906210A1 (de) 1989-02-28 1989-02-28 Duesenkasten

Publications (2)

Publication Number Publication Date
EP0464228A1 EP0464228A1 (de) 1992-01-08
EP0464228B1 true EP0464228B1 (de) 1994-04-27

Family

ID=25878274

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90103798A Expired - Lifetime EP0464228B1 (de) 1989-02-28 1990-02-27 Düsenkasten

Country Status (2)

Country Link
EP (1) EP0464228B1 (sv)
DE (3) DE3906210A1 (sv)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50011597D1 (de) * 1999-03-11 2005-12-22 Adam Bernhardt Verfahren zur Temperierung einer Halle und Einrichtung zur Durchführung des Verfahrens
DE102004057920A1 (de) * 2004-12-01 2006-06-08 Wella Ag Sprühkanal und Kappe mit einem abgewinkelten Sprühkanal für einen Aerosolbehälter oder einen Sprühbehälter

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE561590A (sv) * 1956-10-18
CH377078A (de) * 1960-04-25 1964-04-30 Luwa Ag Raumklimatisierungsgerät
FR1545089A (fr) * 1967-05-13 1968-11-08 Ltg Lufttechnische Gmbh Appareil à induction pour la climatisation des locaux
DE2202346A1 (de) * 1972-01-19 1973-07-26 Lechler Appbau Kg Spritzduese
DE2242582C3 (de) * 1972-08-30 1979-02-15 Werner 7300 Esslingen Paul LuftauslaB-Vorrichtung für Raumklimatisierungs- und Belüftungsanlagen
DE8433344U1 (de) * 1984-11-14 1985-05-09 Jacobs, Ludwig, 4790 Paderborn Einstueckige, aus einem elastisch verformbarem material bestehende luftduese fuer klimaanlagen
DE8434134U1 (de) * 1984-11-22 1985-03-14 Nürnberger & Co GmbH, 2000 Hamburg Befestigungskoerper mit funktionsvorrichtung
HU200389B (en) * 1987-05-19 1990-05-28 Fuetoeber Epueletgep Termekek Nozzle of low noise level with body of rotation shape
DE8802030U1 (de) * 1988-02-17 1988-04-28 Hans Höllmüller Maschinenbau GmbH & Co, 7033 Herrenberg Maschine zum Ätzen von Gegenständen

Also Published As

Publication number Publication date
EP0464228A1 (de) 1992-01-08
DE3906210C2 (sv) 1992-01-30
DE59005542D1 (de) 1994-06-01
DE3906210A1 (de) 1990-08-30
DE8902355U1 (de) 1989-05-03

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