EP0753708A1 - Air grid for nondivided air current - Google Patents

Air grid for nondivided air current Download PDF

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Publication number
EP0753708A1
EP0753708A1 EP96105757A EP96105757A EP0753708A1 EP 0753708 A1 EP0753708 A1 EP 0753708A1 EP 96105757 A EP96105757 A EP 96105757A EP 96105757 A EP96105757 A EP 96105757A EP 0753708 A1 EP0753708 A1 EP 0753708A1
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European Patent Office
Prior art keywords
transverse wall
channel
ventilation grille
plane
channels
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EP96105757A
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German (de)
French (fr)
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Ernst Lex
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Individual
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Individual
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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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/082—Grilles, registers or guards

Definitions

  • the invention relates to a ventilation grille for undivided air flows, in which vertical louvres are provided in a lattice plane, each of which forms a perpendicular transverse wall to the lattice plane and runs across the lattice depth from the outside inwards, and in which each lamella on the transverse wall has an outside gutter open to the inside and provided with a gutter open to the outside and the passage cross section between the outer groove and the adjacent transverse wall is equal to the passage cross section between the inner groove and the adjacent transverse wall.
  • a ventilation grille with vertical slats is provided on moving vehicles, usually in a side wall of the moving vehicle. With this type of installation, the ventilation grille is usually free on the outside or not covered by a sieve. An air flow occurs in each outer gap delimited by two adjacent lamellae, which leaves the ventilation grille through an inner gap delimited by the two lamellae. Corresponding, for example four times, air deflections within the ventilation grille are intended to separate dust and water particles contained in the air flows from the air flows, ie from the flow. Important for the assessment of such a ventilation grille is on the one hand the degree of separation and on the other hand the pressure loss that occurs when the ventilation grille flows through. In the case of a ventilation grille of the type mentioned at the outset, an air stream flowing between two adjacent slats is not divided between the two slats as the ventilation grille continues to flow through, but rather flows through the ventilation grille in its entirety.
  • each transverse wall In a known (US-PS 19 95 456, Fig. 11) ventilation grille of the type mentioned, the inner and outer channels of each transverse wall are provided on the two opposite sides of the transverse wall and each of the undivided air flows has only one inner channel and to pass an outer gutter.
  • the two channels assigned to one of the undivided air flows overlap one another in the direction of the grating plane.
  • the passage cross section between these two mutually assigned channels is noticeably narrower than the passage cross section between the channel and the associated transverse wall.
  • This known ventilation grille has a relatively low degree of separation and a relatively high pressure drop, in particular when the ventilation grille is attached to the side wall of a so-called high-speed rail vehicle, where the outside is not flowed at right angles or slightly obliquely to the grating plane, but entirely pronounced oblique, possibly flowing at an angle.
  • a ventilation grille is also known (AT-PS 354 680), in which an inner channel and an outer channel of a common transverse wall are provided opposite one another and each pair of inner and outer channels is assigned a centrally arranged channel which is open to the outside and this three channels each seen in the direction of the lattice plane end in a common transverse plane.
  • the central channel of this ventilation grille is an independent structure.
  • the passage cross-section between the central channel and the inner and the outer channel of the adjacent transverse wall and the adjacent transverse wall is in each case considerably larger than the passage cross-section of the air-inlet outer gap and the air-outlet inner gap of the ventilation grille.
  • the ventilation grille according to the invention is solving this problem, characterized in that the inner channel and the outer channel of each transverse wall are provided opposite one another and each pair of inner and outer channels is assigned a centrally arranged channel which is open to the outside, and these three channels are each in Seen in the direction of the lattice plane end in a common transverse plane, and that the centrally arranged channels are each attached to the sides of the transverse walls opposite the inner and outer channels and the passage cross sections between the central channel and the inner and outer channels of the adjacent transverse wall and the adjacent one
  • the transverse wall is in each case equal to the passage cross section between the inner or outer channel and the adjacent transverse wall.
  • this undisturbed air flow passes through the ventilation grille only passage cross-sections that are not smaller than that of the air-inlet outer gap and that of the air-outlet inner gap, whereby three channels with relatively large storage spaces are available to the air flow .
  • the four deflections of each air flow are assigned to three channels.
  • the ventilation grille according to the invention has an increased at a sufficiently high throughput Degree of separation and reduced pressure loss.
  • each channel forms a base leading away from the load-bearing transverse wall and a leg parallel to the adjacent transverse wall.
  • the channels offer increased storage space because of the base and the formation of laminar flow areas because of the leg.
  • the airflow air has a very laminar effect.
  • each channel is curved in a semicircle as viewed in the direction of the grating plane. This bend in the channel base improves the air flow in the channel and the discharge of embedded particles along the channel.
  • each channel has a retaining ledge angled towards the transverse wall on the free channel edge spaced apart from the associated transverse wall.
  • the retaining ledges at the end of the storage space prevent particles deposited in the gutter from being torn out.
  • the retaining ledge is inclined obliquely into the interior of the channel. This makes it easier for particles and air to enter the channel.
  • the ventilation grille is subdivided along a grating plane arranged in a central region between the outside and inside and the dividing grating plane is arranged next to the central channels.
  • the subdivision of the ventilation grille known per se along a grating plane does not therefore cover the central channels.
  • the ventilation grille according to the invention is on the side wall Maximum speed rail vehicle provided.
  • the outside of the ventilation grille is markedly inclined by the air.
  • the ventilation grille according to the drawing includes a circumferential rectangular frame 1 of which only a lower frame strut is partially shown.
  • the ventilation grille sits in the side wall of a vehicle, not shown, and with respect to the interior of the vehicle, one side of the ventilation grille is on the outside and the other side is on the inside.
  • the frame 1 forms, at least in the area of the lower frame strut, a frame ledge 2 running inside and outside in the direction of the grating plane have the same distance.
  • Two adjacent slats 3 each form a gap 4 between them, through which an air flow 5 enters, which flows through the ventilation grille undivided and leaves the inside between the two adjacent slats through an inner gap 6.
  • Each lamella 3 forms a transverse wall 7, which is essentially straight over the lattice depth, ie from the outside inwards, and at the inner and at the outer end merges into a curved base 8 of a groove 9, 10 which extends along the entire lamella.
  • Each transverse wall 7 carries a further channel 11 on the side opposite these two channels 9, 10, approximately centrally between the inner channel and the outer channel.
  • each channel merges into a straight leg 12, which in turn is angled Restraint ledge 13 merges.
  • the five passage cross sections 14 of interest here between two adjacent lamellae 3 are each indicated by a double arrow and are identical to one another.
  • a grating plane 15 is indicated, along which the ventilation grille is divided.
  • a transverse plane 16 is also indicated, in which the three mutually associated channels 9, 10, 11, seen in the lattice plane, end without essentially overlapping.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)

Abstract

The grid has vertical adjacent bars (3) on one plane, forming a continuous transverse wall (7) at right angles to the grid's plane. Each bar on the transverse wall has an inward and an outward opening groove. The cross-section of the duct between the outer groove (9) and an adjacent transverse wall equals that between the inner groove (10) and the wall. Each pair of grooves facing each other has a central outward opening groove (11). The three grooves end in one transverse plane (16). The central grooves are each positioned on the sides of the transverse walls facing the inner and outer grooves. The cross-sections of the passage (14) between the inner or outer groove and adjacent transverse wall equal the cross section between the inner or outer groove and adjacent transverse wall.

Description

Die Erfindung betrifft ein Lüftungsgitter für ungeteilte Luftströme, bei dem in einer Gitterebene nebeneinander aufgereiht senkrechte Lamellen vorgesehen sind, die jeweils eine zur Gitterebene rechtwinkelige, über die Gittertiefe von außen nach innen durchgehende Querwand bilden, und bei dem jede Lamelle an der Querwand außen mit einer nach innen offenen Rinne und innen mit einer nach außen offenen Rinne versehen ist und der Durchlaßquerschnitt zwischen der äußeren Rinne und der benachbarten Querwand gleich dem Durchlaßquerschnitt zwischen der inneren Rinne und der benachbarten Querwand ist.The invention relates to a ventilation grille for undivided air flows, in which vertical louvres are provided in a lattice plane, each of which forms a perpendicular transverse wall to the lattice plane and runs across the lattice depth from the outside inwards, and in which each lamella on the transverse wall has an outside gutter open to the inside and provided with a gutter open to the outside and the passage cross section between the outer groove and the adjacent transverse wall is equal to the passage cross section between the inner groove and the adjacent transverse wall.

Ein Lüftungsgitter mit senkrechten Lamellen ist an fahrenden Fahrzeugen vorgesehen und zwar in der Regel in einer Seitenwand des fahrenden Fahrzeugs. Das Lüftungsgitter ist bei dieser Einbauweise in der Regel an der Außenseite frei bzw. nicht von einem Sieb überdeckt. Es tritt in jeden von zwei benachbarten Lamellen begrenzten äußeren Spalt ein Luftstrom ein, der das Lüftungsgitter durch einen von den zwei Lamellen begrenzten inneren Spalt verläßt. Durch entsprechende, z.B. vierfache, Luftumlenkungen innerhalb des Lüftungsgitters sollen in den Luftströmen enthaltene Staub- und Wasserpartikel aus den Luftströmen, d.h. aus der Strömung abgeschieden werden. Wichtig für die Beurteilung eines solchen Lüftungsgitters ist zum einen der Abscheidegrad und zum anderen der Druckverlust, der bei der Durchströmung des Lüftungsgitters auftritt. Bei einem Lüftungsgitter der eingangs genannten Art wird ein zwischen zwei benachbarten Lamellen einströmender Luftstrom beim weiteren Durchströmen des Lüftungsgitters zwischen den beiden Lamellen nicht geteilt, sondern durchströmt das Lüftungsgitter in seiner Gesamtheit.A ventilation grille with vertical slats is provided on moving vehicles, usually in a side wall of the moving vehicle. With this type of installation, the ventilation grille is usually free on the outside or not covered by a sieve. An air flow occurs in each outer gap delimited by two adjacent lamellae, which leaves the ventilation grille through an inner gap delimited by the two lamellae. Corresponding, for example four times, air deflections within the ventilation grille are intended to separate dust and water particles contained in the air flows from the air flows, ie from the flow. Important for the assessment of such a ventilation grille is on the one hand the degree of separation and on the other hand the pressure loss that occurs when the ventilation grille flows through. In the case of a ventilation grille of the type mentioned at the outset, an air stream flowing between two adjacent slats is not divided between the two slats as the ventilation grille continues to flow through, but rather flows through the ventilation grille in its entirety.

Bei einem bekannten (US-PS 19 95 456, Fig. 11) Lüftungsgitter der eingangs genannten Art sind die innere und die äußere Rinne jeder Querwand auf den beiden einander entgegengesetzten Seiten der Querwand vorgesehen und hat jeder der ungeteilten Luftströme nur je eine innere Rinne und eine äußere Rinne zu passieren. Die einem der ungeteilten Luftströme zugeordneten beiden Rinnen überlappen einander in Richtung der Gitterebene. Der Durchlaßquerschnitt zwischen diesen beiden einander zugeordneten Rinnen ist merklich enger als der Durchlaßquerschnitt zwischen der Rinne und der zugeordneten Querwand. Dieses bekannte Lüftungsgitter weist einen relativ geringen Abscheidegrad und einen relativ hohen Druckverlust auf und zwar insbesondere dann, wenn das Lüftungsgitter an der Seitenwand eines sogenannten Höchstgeschwindigkeit-Schienenfahrzeugs angebracht ist, wo es an der Außenseite nicht rechtwinkelig oder leicht schräg zur Gitterebene angeströmt wird, sondern ganz ausgeprägt schräg, eventuell winkelig angeströmt wird.In a known (US-PS 19 95 456, Fig. 11) ventilation grille of the type mentioned, the inner and outer channels of each transverse wall are provided on the two opposite sides of the transverse wall and each of the undivided air flows has only one inner channel and to pass an outer gutter. The two channels assigned to one of the undivided air flows overlap one another in the direction of the grating plane. The passage cross section between these two mutually assigned channels is noticeably narrower than the passage cross section between the channel and the associated transverse wall. This known ventilation grille has a relatively low degree of separation and a relatively high pressure drop, in particular when the ventilation grille is attached to the side wall of a so-called high-speed rail vehicle, where the outside is not flowed at right angles or slightly obliquely to the grating plane, but entirely pronounced oblique, possibly flowing at an angle.

Es ist auch ein Lüftungsgitter bekannt (AT-PS 354 680), bei dem eine innere Rinne und eine äußere Rinne einer gemeinsamen Querwand einander gegenüber vorgesehen sind und jedem Paar von innerer und äußerer Rinne eine mittig angeordnete, nach außen offene Rinne zugeordnet ist und diese drei Rinnen jeweils in Richtung der Gitterebene gesehen in einer gemeinsamen Querebene enden. Bei diesem Lüftungsgitter ist die mittige Rinne ein selbständiges Gebilde. Auch ist der Durchlaßquerschnitt zwischen der mittigen Rinne und der inneren sowie der äußeren Rinne der benachbarten Querwand sowie der benachbarten Querwand jeweils erheblich größer als der Durchlaßquerschnitt des lufteinlassenden äußeren Spalts und des luftauslassenden inneren Spalts des Lüftungsgitters.A ventilation grille is also known (AT-PS 354 680), in which an inner channel and an outer channel of a common transverse wall are provided opposite one another and each pair of inner and outer channels is assigned a centrally arranged channel which is open to the outside and this three channels each seen in the direction of the lattice plane end in a common transverse plane. The central channel of this ventilation grille is an independent structure. The passage cross-section between the central channel and the inner and the outer channel of the adjacent transverse wall and the adjacent transverse wall is in each case considerably larger than the passage cross-section of the air-inlet outer gap and the air-outlet inner gap of the ventilation grille.

Bei diesem bekannten (AT-PS 354 680) Lüftungsgitter wird der durch den äußeren Spalt in das Lüftungsgitter eintretende Luftstrom durch die mittige Rinne in zwei Teilluftströme aufgeteilt, die beim inneren Spalt wieder vereinigt werden. Bei einer extrem schrägen Anströmung des Lüftungsgitters entsteht in den Teilluftströmen eine unterschiedliche Geschwindigkeit, da für den einen Teilluftstrom wegen des geringeren erforderlichen Umlenkungswinkels für die Umlenkung eine wesentlich geringere Kraft benötigt wird. Dies verursacht einen erheblich höheren Druckverlust im Lüftungsgitter, als sich rechnerisch ergeben wird, wenn unterstellt wird, daß beide Teilluftströme mit gleicher Geschwindigkeit das Lüftungsgitter durchfließen. Dies führt zu einer beachtlichen Verringerung der Durchsatzleistung des Lüftungsgitters, z.B. bei Höchstgeschwindigkeit-Schienenfahrzeugen zu einer Verringerung bis zu 50 %.In this known (AT-PS 354 680) ventilation grille, the air flow entering the ventilation grille through the outer gap is divided by the central channel into two partial air flows which are combined again in the inner gap. With an extremely oblique flow to the ventilation grille, in the partial air flows have a different speed, since for the partial air flow a much lower force is required for the deflection because of the smaller required deflection angle. This causes a considerably higher pressure loss in the ventilation grille than can be calculated if it is assumed that both partial air flows flow through the ventilation grille at the same speed. This leads to a considerable reduction in the throughput of the ventilation grille, for example in the case of high-speed rail vehicles, a reduction of up to 50%.

Eine Aufgabe der Erfindung ist es nun, ein Lüftungsgitter der eingangs genannten Art zu schaffen, bei dem der Abscheidegrad erhöht, der Druckverlust verringert und eine ausreichende Durchsatzleistung gewahrleistet ist. Das erfindungsgemäße Lüftungsgitter ist, diese Aufgabe lösend, dadurch gekennzeichnet, daß die innere Rinne und die äußere Rinne jeder Querwand einander gegenüber vorgesehen sind und jedem Paar von innerer und äußerer Rinne eine mittig angeordnete, nach außen offene Rinne zugeordnet ist und diese drei Rinnen jeweils in Richtung der Gitterebene gesehen in einer gemeinsamen Querebene enden, und daß die mittig angeordneten Rinnen jeweils an den den inneren sowie äußeren Rinnen gegenüberliegenden Seiten der Querwände angebracht sind und die Durchlaßquerschnitte zwischen der mittigen Rinne und der inneren sowie der äußeren Rinne der benachbarten Querwand sowie der benachbarten Querwand jeweils gleich dem Durchlaßquerschnitt zwischen der inneren bzw. äußeren Rinne und der benachbarten Querwand sind.It is an object of the invention to provide a ventilation grille of the type mentioned at the outset, in which the degree of separation is increased, the pressure loss is reduced and sufficient throughput is ensured. The ventilation grille according to the invention is solving this problem, characterized in that the inner channel and the outer channel of each transverse wall are provided opposite one another and each pair of inner and outer channels is assigned a centrally arranged channel which is open to the outside, and these three channels are each in Seen in the direction of the lattice plane end in a common transverse plane, and that the centrally arranged channels are each attached to the sides of the transverse walls opposite the inner and outer channels and the passage cross sections between the central channel and the inner and outer channels of the adjacent transverse wall and the adjacent one The transverse wall is in each case equal to the passage cross section between the inner or outer channel and the adjacent transverse wall.

Der bei dem hier zur Rede stehenden Lüftungsgitter dieses ungeteilt passierende Luftstrom passiert im Durchgang durch das Lüftungsgitter nur Durchlaßquerschnitte, die nicht kleiner sind als der des lufteinlassenden äußeren Spaltes und der des luftauslassenden inneren Spaltes, wobei dem Luftstrom drei Rinnen mit relativ großen Stauräumen zur Verfügung stehen. Die viermalige Umlenkung jedes Luftstromes ist drei Rinnen zugeordnet. Das erfindungsgemäße Lüftungsgitter weist bei ausreichend hoher Durchsatzleistung einen erhöhten Abscheidegrad und verringerten Druckverlust auf.In the ventilation grille in question, this undisturbed air flow passes through the ventilation grille only passage cross-sections that are not smaller than that of the air-inlet outer gap and that of the air-outlet inner gap, whereby three channels with relatively large storage spaces are available to the air flow . The four deflections of each air flow are assigned to three channels. The ventilation grille according to the invention has an increased at a sufficiently high throughput Degree of separation and reduced pressure loss.

In der Regel bildet jede Rinne einen von der tragenden Querwand wegführenden Grund und einen zur benachbarten Querwand parallelen Schenkel. Bei dieser Gestaltung der Rinnen bieten diese wegen des Grunds einen vergrößerten Stauraum und wegen des Schenkels die Bildung laminarer Strömungsbereiche. Bei jedem der drei Rinnenschenkel wirkt der Luftstromluft ganz ausgeprägt laminar.As a rule, each channel forms a base leading away from the load-bearing transverse wall and a leg parallel to the adjacent transverse wall. With this design of the channels, they offer increased storage space because of the base and the formation of laminar flow areas because of the leg. In each of the three channel legs, the airflow air has a very laminar effect.

Besonders zweckmäßig und vorteilhaft ist es dabei, wenn der Grund jeder Rinne in Richtung der Gitterebene gesehen halbkreisartig gebogen ist. Diese Biegung des Rinnengrunds verbessert die Luftführung in der Rinne und die Ableitung eingelagerter Partikel entlang der Rinne.It is particularly expedient and advantageous if the base of each channel is curved in a semicircle as viewed in the direction of the grating plane. This bend in the channel base improves the air flow in the channel and the discharge of embedded particles along the channel.

Besonders zweckmäßig und vorteilhaft ist es auch, wenn jede Rinne an dem freien, von der zugehörigen Querwand beabstandeten Rinnenrand einen Rückhaltesims zur Querwand hin abgewinkelt aufweist. Die am Stauraumende angebrachten Rückhaltesimse verhindern ein Herausreißen von in der Rinne abgelagerten Partikeln.It is also particularly expedient and advantageous if each channel has a retaining ledge angled towards the transverse wall on the free channel edge spaced apart from the associated transverse wall. The retaining ledges at the end of the storage space prevent particles deposited in the gutter from being torn out.

Besonders zweckmäßig und vorteilhaft ist es dabei, wenn der Rückhaltesims jeweils in das Rinneninnere schräg geneigt ist. Dies erleichtert das Eintreten von Partikeln und Luft in die Rinne.It is particularly expedient and advantageous if the retaining ledge is inclined obliquely into the interior of the channel. This makes it easier for particles and air to enter the channel.

Besonders zweckmäßig und vorteilhaft ist es sodann, wenn das Lüftungsgitter entlang einer in einem Mittenbereich zwischen außen und innen angeordneten Gitterebene unterteilt ist und die unterteilende Gitterebene neben den mittigen Rinnen angeordnet ist. Die an sich bekannte Unterteilung des Lüftungsgitters entlang einer Gitterebene erfaßt also die mittigen Rinnen nicht.It is then particularly expedient and advantageous if the ventilation grille is subdivided along a grating plane arranged in a central region between the outside and inside and the dividing grating plane is arranged next to the central channels. The subdivision of the ventilation grille known per se along a grating plane does not therefore cover the central channels.

In der Regel ist das erfindungsgemäße Lüftungsgitter an der Seitenwand eines Höchstgeschwindigkeit-Schienenfahrzeugs vorgesehen. Das Lüftungsgitter wird außen von der Luft ganz ausgeprägt schräg, d.h. winkelig angeströmt.As a rule, the ventilation grille according to the invention is on the side wall Maximum speed rail vehicle provided. The outside of the ventilation grille is markedly inclined by the air.

In der Zeichnung ist eine bevorzugte Ausführungsform der Erfindung dargestellt und zwar in einem waagerechten Schnitt ein Teil eines Lüftungsgitters für ungeteilte Luftströme.In the drawing, a preferred embodiment of the invention is shown, namely in a horizontal section, part of a ventilation grille for undivided air flows.

Zu dem Lüftungsgitter gemäß Zeichnung gehört ein umlaufender rechteckiger Rahmen 1 von dem nur eine untere Rahmenstrebe teilweise gezeigt ist. Das Lüftungsgitter sitzt in der nicht gezeigten Seitenwand eines Fahrzeugs und bezüglich des Inneren des Fahrzeugs befindet sich eine Seite des Lüftungsgitters außen und die andere Seite innen. Der Rahmen 1 bildet zumindest im Bereich der unteren Rahmenstrebe innen und außen je einen in Richtung der Gitterebene verlaufenden Rahmensims 2. Zwischen der unteren Rahmenstrebe und einer nicht gezeigten oberen Rahmenstrebe verlaufen gleichgestaltete Lamellen 3 bzw. Gitterstäbe, von denen jeweils zwei einander benachbart sind und voneinander den gleichen Abstand aufweisen. Je zwei benachbarte Lamellen 3 bilden außen zwischen sich einen Spalt 4, durch den ein Luftstrom 5 eintritt, der das Lüftungsgitter ungeteilt durchströmt und dieses innen zwischen den beiden benachbarten Lamellen durch einen inneren Spalt 6 verläßt.The ventilation grille according to the drawing includes a circumferential rectangular frame 1 of which only a lower frame strut is partially shown. The ventilation grille sits in the side wall of a vehicle, not shown, and with respect to the interior of the vehicle, one side of the ventilation grille is on the outside and the other side is on the inside. The frame 1 forms, at least in the area of the lower frame strut, a frame ledge 2 running inside and outside in the direction of the grating plane have the same distance. Two adjacent slats 3 each form a gap 4 between them, through which an air flow 5 enters, which flows through the ventilation grille undivided and leaves the inside between the two adjacent slats through an inner gap 6.

Jede Lamelle 3 bildet eine Querwand 7, die über die Gittertiefe, d.h. von außen nach innen im wesentlichen gerade ist und beim inneren sowie beim äußeren Ende jeweils in einen gebogenen Grund 8 einer Rinne 9, 10 übergeht, die sich entlang der gesamten Lamelle erstreckt. Jede Querwand 7 trägt auf der diesen beiden Rinnen 9, 10 gegenüberliegenden Seite, etwa mittig zwischen der inneren Rinne und der äußeren Rinne eine weitere Rinne 11. Nach dem gebogenen Grund 8 geht jede Rinne in einen geraden Schenkel 12 über, der seinerseits in einen abgewinkelten Rückhaltesims 13 übergeht. Die hier interessierenden fünf Durchlaßquerschnitte 14 zwischen zwei benachbarten Lamellen 3 sind durch je einen Doppelpfeil angegeben und untereinander gleich.Each lamella 3 forms a transverse wall 7, which is essentially straight over the lattice depth, ie from the outside inwards, and at the inner and at the outer end merges into a curved base 8 of a groove 9, 10 which extends along the entire lamella. Each transverse wall 7 carries a further channel 11 on the side opposite these two channels 9, 10, approximately centrally between the inner channel and the outer channel. After the curved base 8, each channel merges into a straight leg 12, which in turn is angled Restraint ledge 13 merges. The five passage cross sections 14 of interest here between two adjacent lamellae 3 are each indicated by a double arrow and are identical to one another.

In der Zeichnung ist eine Gitterebene 15 angedeutet, entlang der das Lüftungsgitter geteilt ist. Es ist auch eine Querebene 16 angedeutet, in der die drei einander zugeordneten Rinnen 9, 10, 11, in Gitterebene gesehen, enden, ohne sich im wesentlichen zu überlappen.In the drawing, a grating plane 15 is indicated, along which the ventilation grille is divided. A transverse plane 16 is also indicated, in which the three mutually associated channels 9, 10, 11, seen in the lattice plane, end without essentially overlapping.

Claims (6)

Lüftungsgitter für ungeteilte Luftströme,
bei dem in einer Gitterebene nebeneinander aufgereiht senkrechte Lamellen vorgesehen sind, die jeweils eine zur Gitterebene rechtwinkelige, über die Gittertiefe von außen nach innen durchgehende Querwand bilden, und bei dem jede Lamelle an der Querwand außen mit einer nach innen offenen Rinne und innen mit einer nach außen offenen Rinne versehen ist und der Durchlaßquerschnitt zwischen der äußeren Rinne und der benachbarten Querwand gleich dem Durchlaßquerschnitt zwischen der inneren Rinne und der benachbarten Querwand ist,
dadurch gekennzeichnet,
daß die innere Rinne (10) und die äußere Rinne (9) jeder Querwand (7) einander gegenüber vorgesehen sind und jedem Paar von innerer und äußerer Rinne (9, 10) eine mittig angeordnete, nach außen offene Rinne (11) zugeordnet ist und diese drei Rinnen jeweils in Richtung der Gitterebene (15) gesehen in einer gemeinsamen Querebene (16) enden und
daß die mittig angeordneten Rinnen (11) jeweils an den den inneren sowie äußeren Rinnen (9, 10) gegenüberliegenden Seiten der Querwände (7) angebracht sind und die Durchlaßquerschnitte (14) zwischen der mittigen Rinne (11) und der inneren sowie der äußeren Rinne (9, 10) der benachbarten Querwand (7) sowie der benachbarten Querwand jeweils gleich dem Durchlaßquerschnitt (14) zwischen der inneren bzw. äußeren Rinne und der benachbarten Querwand (7) sind.Ventilation grille for undivided air flows,
in which vertical lamellae are lined up next to each other in a lattice plane, each forming a transverse wall perpendicular to the lattice plane and passing through the lattice depth from the outside inwards, and in which each lamella on the transverse wall has an inwardly open channel and an internally with a channel is provided on the outside open channel and the passage cross section between the outer channel and the adjacent transverse wall is equal to the passage cross section between the inner channel and the adjacent transverse wall,
characterized,
that the inner gutter (10) and the outer gutter (9) of each transverse wall (7) are provided opposite each other and each pair of inner and outer gutters (9, 10) is assigned a centrally arranged, outwardly open gutter (11) and seen in the direction of the grating plane (15), these three channels each end in a common transverse plane (16)
that the centrally arranged channels (11) are each attached to the sides of the transverse walls (7) opposite the inner and outer channels (9, 10) and the passage cross sections (14) between the central channel (11) and the inner and outer channels (9, 10) of the adjacent transverse wall (7) and the adjacent transverse wall are each equal to the passage cross section (14) between the inner or outer channel and the adjacent transverse wall (7). Lüftungsgitter nach Anspruch 1, dadurch gekennzeichnet, daß jede Rinne (9, 10, 11) einen von der zugehörigen Querwand (7) wegführenden Grund (8) und einen zur benachbarten Querwand parallelen Schenkel (12) bildet.Ventilation grille according to claim 1, characterized in that each channel (9, 10, 11) forms a base (8) leading away from the associated transverse wall (7) and a leg (12) parallel to the adjacent transverse wall. Lüftungsgitter nach Anspruch 2, dadurch gekennzeichnet, daß der Grund (8) jeder Rinne (9, 10, 11) in Richtung der Gitterebene (15) gesehen halbkreisartig gebogen ist.Ventilation grille according to claim 2, characterized in that the base (8) of each channel (9, 10, 11) seen in the direction of the grating plane (15) is bent in a semicircle. Lüftungsgitter nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß jede Rinne (9, 10, 11) an dem freien, von der zugehörigen Querwand (7) beabstandeten Rinnenrand einen Rückhaltesims (13) zur Querwand hin abgewinkelt aufweist.Ventilation grille according to claim 1, 2 or 3, characterized in that each channel (9, 10, 11) on the free channel edge spaced from the associated transverse wall (7) has a retaining ledge (13) angled towards the transverse wall. Lüftungsgitter nach Anspruch 4, dadurch gekennzeichnet, daß der Rückhaltesims (13) jeweils in das Rinneninnere schräg geneigt ist.Ventilation grille according to claim 4, characterized in that the retaining ledge (13) is inclined obliquely into the interior of the channel. Lüftungsgitter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß es entlang einer in einem Mittenbereich zwischen außen und innen angeordneten Gitterebene (15) unterteilt ist und die unterteilende Gitterebene neben den mittigen Rinnen (11) angeordnet ist.Ventilation grille according to one of the preceding claims, characterized in that it is subdivided along a grating plane (15) arranged in a central region between the outside and inside and the dividing grating plane is arranged next to the central channels (11).
EP96105757A 1995-07-08 1996-04-12 Air grid for nondivided air current Withdrawn EP0753708A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19524977 1995-07-08
DE1995124977 DE19524977A1 (en) 1995-07-08 1995-07-08 Ventilation grille for undivided air flows

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EP0753708A1 true EP0753708A1 (en) 1997-01-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3530541A1 (en) * 2018-02-27 2019-08-28 ALSTOM Transport Technologies Ventilation unit for ventilating the passenger compartment of a vehicle and railway vehicle car comprising such a ventilation unit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004045608C5 (en) * 2004-01-23 2015-06-11 Schaltgerätewerk Werder GmbH & Co. KG Method for flowing through a centrifugal separator with external air to be separated from particles and centrifugal separator for the application of the method by means of a Abscheidegitters
DE102012214861A1 (en) * 2012-08-21 2014-02-27 Siemens Aktiengesellschaft Air duct system for a fan of a rail vehicle

Citations (4)

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Publication number Priority date Publication date Assignee Title
US3358580A (en) * 1965-08-27 1967-12-19 Wehr Corp Louver assembly including separating traps
US3771430A (en) * 1972-03-10 1973-11-13 Airolite Co Louver assembly
US3901124A (en) * 1970-11-26 1975-08-26 Rheinstahl Henschel Ag Tank grating
AT354680B (en) * 1976-02-18 1979-01-25 Krapf & Lex VENTILATION GRILLE

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3358580A (en) * 1965-08-27 1967-12-19 Wehr Corp Louver assembly including separating traps
US3901124A (en) * 1970-11-26 1975-08-26 Rheinstahl Henschel Ag Tank grating
US3771430A (en) * 1972-03-10 1973-11-13 Airolite Co Louver assembly
AT354680B (en) * 1976-02-18 1979-01-25 Krapf & Lex VENTILATION GRILLE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3530541A1 (en) * 2018-02-27 2019-08-28 ALSTOM Transport Technologies Ventilation unit for ventilating the passenger compartment of a vehicle and railway vehicle car comprising such a ventilation unit
FR3078290A1 (en) * 2018-02-27 2019-08-30 Alstom Transport Technologies A VENTILATION HOUSING FOR VENTILING THE CABIN OF A VEHICLE AND A VEHICLE OF A RAILWAY VEHICLE COMPRISING SUCH AN AERATION HOUSING

Also Published As

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