EP0275896B1 - Ventilation apparatus - Google Patents

Ventilation apparatus Download PDF

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Publication number
EP0275896B1
EP0275896B1 EP88100293A EP88100293A EP0275896B1 EP 0275896 B1 EP0275896 B1 EP 0275896B1 EP 88100293 A EP88100293 A EP 88100293A EP 88100293 A EP88100293 A EP 88100293A EP 0275896 B1 EP0275896 B1 EP 0275896B1
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EP
European Patent Office
Prior art keywords
housing
ventilator
front wall
ventilator housing
flow duct
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
EP88100293A
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German (de)
French (fr)
Other versions
EP0275896A3 (en
EP0275896A2 (en
Inventor
Walter Ing.Grad Renz
Manfred Pöhler
Hans Engler
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.)
Gretsch Unitas GmbH Baubeschlaege
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Gretsch Unitas GmbH Baubeschlaege
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Publication date
Application filed by Gretsch Unitas GmbH Baubeschlaege filed Critical Gretsch Unitas GmbH Baubeschlaege
Priority to AT88100293T priority Critical patent/ATE59886T1/en
Publication of EP0275896A2 publication Critical patent/EP0275896A2/en
Publication of EP0275896A3 publication Critical patent/EP0275896A3/en
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Publication of EP0275896B1 publication Critical patent/EP0275896B1/en
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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
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • F24F7/013—Ventilation with forced flow using wall or window fans, displacing air through the wall or window
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/50—Fluid-guiding means, e.g. diffusers adjustable for reversing fluid flow
    • F04D29/503—Fluid-guiding means, e.g. diffusers adjustable for reversing fluid flow especially adapted for elastic fluid pumps

Definitions

  • the invention relates to a ventilation device with a radial fan, the drivable fan wheel in a blower housing with at least one radially flowable inlet opening and outlet opening is rotatable, the inlet and outlet openings are offset in the axial direction of the fan and a first and a second flow channel end at the blower housing and each of the housing openings of the rotatable or convertible blower housing can optionally be connected to the first or second flow channel, the blower housing also having a circular cylindrical outer jacket on which, in particular opposite, the inlet and outlet openings are located and eccentrically thereto circular arc-shaped inner jacket of the blower housing is arranged.
  • a ventilation device is known from US-A-2 363 191.
  • Switching from supply air to extract air is carried out by turning the fan housing in the device housing.
  • the respective supply air is separated from the exhaust air by two sloping housing partitions. Their inner edges point towards the rotatable fan housing. The latter is mounted in the front and rear walls of the device housing.
  • the air can easily flow from the supply air into the exhaust air space of the device housing or vice versa. When the fan is at a standstill, drafts can therefore occur and ultimately an interior can cool down in the cold season.
  • the object of the invention is therefore to further develop a ventilation device of the type described at the outset in such a way that at least undesirable drafts are avoided by the passage of air from the supply air into the exhaust air space of the device housing or vice versa.
  • the ventilation device is designed in accordance with the preamble of claim 1 in accordance with the characterizing part of this claim. Due to the special dimensioning, shape and choice of play between the blower housing and the device housing one achieves, in particular also due to the 9 o angle mentioned in claim 1, a strict separation of supply air and exhaust air according to the invention, so that drafts are eliminated.
  • this ventilation device can be completely closed by rotating the fan housing by 90 °, so that when the fan is at a standstill, any air passage through the ventilation device is reliably prevented due to a difference in air pressure between the inlet and the outlet.
  • This fan can be switched from supply air to extract air in a known manner by rotating the fan housing. This is done with a 180 ° turn.
  • the ventilation device can be locked from each of these positions by turning it 90 °.
  • the circular cylindrical outer jacket enables a simple design of the interior of the ventilation device with the two ventilation channels.
  • the play between the blower housing and the inner surfaces of the device housing must be dimensioned such that the blower housing can be rotated without effort, but on the other hand there are no creeping paths for the air or at least minimized.
  • the 90 ° angles for the two openings are sufficient for high ventilation performance.
  • the inlet and outlet openings are closed with the aid of the aforementioned circular cylindrical inner surfaces of the ventilation device housing.
  • the blower housing is only rotatably mounted on a front wall of the device or a cover of this front wall, the free end of the essentially tubular or pot-like blower housing resting on the inner surface of the rear wall of the device.
  • Free end is understood here to mean the end of the blower housing that is remote from the front wall. If you close the lid or put it on with a removable lid, this free end lies in the closed end position of the lid or the front wall with its front end edge airtight against the inner surface of the rear wall pointing in the opposite direction. As the exemplary embodiment shows, this end edge need not necessarily be a closed ring.
  • blower housing has a tubular shape or a pot shape depends on the design of the cover or the front wall in this area.
  • the bottom of the pot can be provided with an opening which is closed in a suitable manner and simplifies assembly, for example.
  • the blower housing is connected in a rotationally fixed manner to a rotary member on the outside of the device front wall or its cover, the rotary member or the blower housing being mounted in a bore in the device front wall or its cover.
  • the fan housing does not need to be particularly aligned with the two channels when mounting the cover or the front wall, but rather can be brought into the desired rotational position with the cover closed, so that the device is flowed through from the inside to the outside or from the outside to the inside .
  • the rotary member has a rotary position display member, in particular a pointer-type rotary knob, which together with a display scale or the like forms a display device on the outside of the device front wall.
  • a label could also be provided, for example, according to the exemplary embodiment, the label with the words “supply air”, “exhaust air” or "closed”.
  • a further preferred embodiment of the invention is characterized in that the first and the second flow channels extend from one another, the outer end of the first channel being assigned to the device base and the outer end of the second channel being assigned to the device rear wall.
  • This ventilation device is therefore suitable for attachment to an outer wall with a corresponding wall opening which adjoins the second flow channel. If the first duct begins at the bottom of the device, this has the advantage that there is no air deflection, which would be required if the duct was opened at the side, but the ventilation device must be at a sufficiently large distance from the ground that can be omitted at the side or front end of the duct.
  • the first and the second flow channels are formed by insulating material and, moreover, the fan housing is made of plastic, in particular with sound-insulating properties.
  • the insulating material can extend as far as the housing of the ventilation device or can consist of an insulating layer of a flow channel formed from another material.
  • the insulation material is primarily material for sound insulation, through which fan noise and outside noise are retained.
  • the surface of the sewer can be knotted in the area of the insulation.
  • the fan housing is also made of plastic, in particular with sound-absorbing properties.
  • the ventilation device has a cuboid housing 1, which is open on its front side and can be closed by means of a front wall 2, which in particular has a U-shaped cross section.
  • the lower end of the housing in the drawing is designed as a removable ventilation grille 3. It can be surrounded by a frame 4 and can be opened in a manner not shown. It expediently consists of swiveling slats.
  • the housing 1 has a U-shaped outer jacket 5 made of metal or stable plastic and a soundproofing material, expediently also U-shaped lining 6, the legs of the latter facing downwards, while those of the outer jacket are directed forward.
  • the lining 6 can be made in one piece with a rear insulation panel 7 or rest there against it in an airtight manner.
  • 6 grooves are provided on the two legs of the lining, which lie opposite one another and form inner surfaces 8 and 9 in the form of cylindrical cylinders.
  • the latter expediently also consists of sound-absorbing material and, apart from its radial breakthroughs, it has a circular-cylindrical outer jacket 33.
  • a circular-cylindrical inner jacket 12 is provided eccentrically to this, so that the wall thickness in the circumferential direction continuously increases over 180 ° from a maximum value to a minimum value changed and thereby an at least approximate spiral shape of the blower housing is present, as is required for radial blowers.
  • first flow channel 13 is the inflow channel and the second flow channel 14 is the outflow channel of the ventilation device.
  • these two channels have a rectangular cross section, and the first flow channel 13 can be somewhat widened towards the ventilation grille 3.
  • the plane of the ventilation grille can deviate from the drawing and also incline to the horizontal plane, with a corresponding adjustment of the flow channel and ventilation grille.
  • the flow pattern is symbolized in FIG. 1 by arrow 15. The room is vented in this setting of the blower housing 11.
  • the air flow is deflected at a right angle in order to then flow into the atmosphere via the opening 17 in the rear wall of the housing, it being possible for a wall opening (not shown) or a further air connection piece to connect directly to the opening 17.
  • a cover attachment 19 with a main switch 20 for switching on the fan motor 21 and a further actuating member 22, in particular for gradually changing the motor speed.
  • the fan motor 21 drives the impeller 23 in a known manner.
  • the jacket of the pot-shaped fan housing 11 is provided with two mutually opposite openings.
  • the upper opening in FIG. 2 extends to the free end edge 24 and it extends in the axial direction over approximately 2/3 to 3/4 of the housing height 25.
  • this outlet opening 26 which is open at the edge, and the one opposite it in the radial direction, extends Inlet opening 27 over approximately 90 ° or a somewhat smaller angle.
  • the inlet opening 27 is assigned to the base 28, which is preferably designed as an intermediate base, and extends from it in the axial direction over approximately 1/4 or 1/3 of the housing height 25.
  • Fig. 4 the fan housing 11 is rotated by 180 ° with respect to the position shown in FIG. 2.
  • the direction of flow in the ventilation device is reversed, which is symbolized by arrow 29 (FIG. 3).
  • the outside air flows in the direction of arrow 30 into the second flow channel 14 and flows through the outlet opening 26 of the radial fan 32, which is now located below, into the first flow channel 13. This leaves it via the ventilation grille 3 and finally arrives in the direction of the arrow 31 into the room equipped with this ventilation device.
  • the inlet opening 27 and the outlet opening 26 can be assigned to the inner cylindrical surfaces 8 and 9, respectively, by rotating the blower housing 11 by 90 °. Because these openings do not protrude in the circumferential direction over the inner surfaces 8 and 9, the natural air throughput is prevented by the ventilation device in this rotational position "CLOSED".
  • the blower housing 11 is connected in a rotationally fixed manner to a rotary member 34 on the outside of the device front wall 2.
  • the rotary member and / or the blower housing 11 passes through this front wall 2, one of the two parts being rotatably mounted directly in a bore in the front wall 2.
  • the rotary member 34 has a rotary position display member 35, which is a pointer-shaped rotary knob in the exemplary embodiment. He works in a manner not shown with a display scale or with corresponding fixed markings on the outside of the front wall 2, for example with the words "exhaust air", "supply air” or twice the word "CLOSE". Due to the shape of the pointer and the arrangement of these four words at an angle of 90 ° to each other, the respective position of the blower housing 11 and thus also the direction of flow 15 or 29 can be quickly recognized from the outside or the correct setting can be easily selected.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Compressor (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Massaging Devices (AREA)

Abstract

In order that the direction of flow (15 or 29) in a ventilation apparatus fitted with a radial fan (32) can be freely selected, i.e. air both introduced and extracted from a chamber with this ventilation apparatus, the fan housing (11) of the radial fan (32) of this ventilation apparatus can be rotated through 180<o> in the housing (1), preferably supported on the front wall (2) of the housing. The inlet opening (27) of the radial fan (32) can thereby be connected either to the first flow duct (13) or the second flow duct (14), the first flow duct (13) forming the connection between the radial fan and the interior of the chamber, whilst the second flow duct (14) creates a connection between the radial fan and the atmosphere. In an intermediate rotary position, which is preferably reached in each case after 90<o> rotation, the connection between the first flow duct (13) and the second flow duct (14) is shut off so that with the drive motor switched off no natural flow through the housing (1) can occur. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Lüftungsvorrichtung mit einem Radialgebläse, dessen antreibbares Lüftrad in einem Gebläsegehäuse mit wenigstens je einer radial durchströmbaren Einlaßöffnung und Auslaßöffnung drehbar ist, wobei die Einlaß- und die Auslaßöffnung in Achsrichtung des Lüfters gegeneinander versetzt sind und ein erster sowie ein zweiter Strömungskanal am Gebläsegehäuse enden und jede der Gehäuseöffnungen des drehbar oder umsetzbar gehaltenen Gebläsegehäuses wahlweise mit dem ersten oder zweiten Strömungskanal verbindbar ist, wobei außerdem das Gebläsegehäuse einen kreiszylindrischen Außenmantel aufweist, an welchem sich, insbesondere gegenüberliegend, die Einlaß- und die Auslaßöffnung befinden und hierzu exzentrisch ein kreisbogenförmiger Innenmantel des Gebläsegehäuses angeordnet ist. Eine derartige Lüftungsvorrichtung ist durch die US-A-2 363 191 bekannt geworden. Das Umschalten von Zuluft auf Abluft erfolgt durch Drehen des Gebläsegehäuses im Vorrichtungsgehäuse. Innerhalb des letzteren erfolgt die Abtrennung der jeweiligen Zuluft gegenüber der Abluft durch zwei schrägstehende Gehäuse-Trennwände. Deren innere Kanten weisen gegen das drehbare Gebläsegehäuse. Letzteres ist in der Vorder- und der Rückwand des Vorrichtungsgehäuses gelagert.The invention relates to a ventilation device with a radial fan, the drivable fan wheel in a blower housing with at least one radially flowable inlet opening and outlet opening is rotatable, the inlet and outlet openings are offset in the axial direction of the fan and a first and a second flow channel end at the blower housing and each of the housing openings of the rotatable or convertible blower housing can optionally be connected to the first or second flow channel, the blower housing also having a circular cylindrical outer jacket on which, in particular opposite, the inlet and outlet openings are located and eccentrically thereto circular arc-shaped inner jacket of the blower housing is arranged. Such a ventilation device is known from US-A-2 363 191. Switching from supply air to extract air is carried out by turning the fan housing in the device housing. Within the latter, the respective supply air is separated from the exhaust air by two sloping housing partitions. Their inner edges point towards the rotatable fan housing. The latter is mounted in the front and rear walls of the device housing.

Aufgrund des linienförmigen Spalts zwischen den Trennwänden und dem Rotorgehäuse kann die Luft leicht vom Zuluft- in den Abluftraum des Vorrichtungsgehäuses bzw. umgekehrt überströmen. Es kann deshalb bei stillstehendem Lüfter durchaus zu Zugerscheinungen und damit letztlich auch zur Abkühlung eines Innenraums in der kalten Jahreszeit kommen.Due to the linear gap between the partition walls and the rotor housing, the air can easily flow from the supply air into the exhaust air space of the device housing or vice versa. When the fan is at a standstill, drafts can therefore occur and ultimately an interior can cool down in the cold season.

Diese Zugerscheinungen lassen sich in keiner Stellung des Lüftergehäuses verhindern. Andererseits erwartet man aber von modernen Lüftungsvorrichtungen, daß sie nicht nur von Zuluft auf Abluft umschaltbar, sondern auch vollkommen zu schließen sind, wenn man keine Be- oder Entlüftung des damit ausgestatteten Raums wünscht.These drafts cannot be prevented in any position of the fan housing. On the other hand, however, modern ventilation devices are expected to be switchable not only from supply air to extract air, but also to be completely closed if one does not wish to ventilate the room equipped with it.

Die Aufgabe der Erfindung besteht infolgedessen darin, eine Lüftungsvorrichtung der eingangs erläuterten Art so weiterzubilden, daß zumindest unerwünschte Zugerscheinungen durch Übertritt der Luft vom Zuluft- in den Abluftraum des Vorrichtungsgehäuses bzw. umgekehrt vermieden werden.The object of the invention is therefore to further develop a ventilation device of the type described at the outset in such a way that at least undesirable drafts are avoided by the passage of air from the supply air into the exhaust air space of the device housing or vice versa.

Zur Lösung dieser Aufgabe wird erfindungsgemäß vorgeschlagen, daß die Lüftungsvorrichtung gemäß dem Oberbegriff des Anspruchs 1 entsprechend dem kennzeichnenden Teil dieses Anspruchs ausgebildet ist. Aufgrund der besonderen Dimensionierung, Formgestaltung und Wahl des Spiels zwischen dem Gebläsegehäuse und dem Vorrichtungsgehäuse erreicht man, insbesondere auch aufgrund des im Anspruch 1 erwähnten 9üo-Winkels, erfindungsgemäß eine strikte Trennung von Zuluft und Abluft, so daß Zugerscheinungen entfallen. Außerdem läßt sich diese Lüftungsvorrichtung über eine 90°-Drehung des Gebläsegehäuses vollständig schließen, so daß bei stillstehendem Gebläse jeglicher Luftdurchtritt durch die Luftungsvorrichtung aufgrund eines Luftdruckunterschieds zwischen dem Ein-und dem Auslaß sicher unterbunden wird.To achieve this object, it is proposed according to the invention that the ventilation device is designed in accordance with the preamble of claim 1 in accordance with the characterizing part of this claim. Due to the special dimensioning, shape and choice of play between the blower housing and the device housing one achieves, in particular also due to the 9 o angle mentioned in claim 1, a strict separation of supply air and exhaust air according to the invention, so that drafts are eliminated. In addition, this ventilation device can be completely closed by rotating the fan housing by 90 °, so that when the fan is at a standstill, any air passage through the ventilation device is reliably prevented due to a difference in air pressure between the inlet and the outlet.

Dieses Gebläse läßt sich in bekannter Weise über eine Drehung des Gebläsegehäuses von Zuluft auf Abluft umschalten. Dies geschieht mittels einer 180°-Drehung. Aus jeder dieser Stellungen erreicht man mittels einer 90°-Drehung die Sperrung der Lüftungsvorrichtung. Der kreiszylindrische Außenmantel ermöglicht eine einfache Gestaltung des Inneren der Lüftungsvorrichtung mit den beiden Lüftungskanälen.This fan can be switched from supply air to extract air in a known manner by rotating the fan housing. This is done with a 180 ° turn. The ventilation device can be locked from each of these positions by turning it 90 °. The circular cylindrical outer jacket enables a simple design of the interior of the ventilation device with the two ventilation channels.

Das Spiel zwischen dem Gebläsegehäuse und den Innenflächen des Vorrichtungsgehäuses muß so dimensioniert werden, daß das Gebläsegehäuse ohne Kraftaufwand gedreht werden kann, andererseits aber Schleichwege für die Luft unterbleiben oderzumindest minimiertwerden. Die 90°-Winkel für die beiden Öffnungen reichen für eine hohe Lüftungsleistung gut aus.The play between the blower housing and the inner surfaces of the device housing must be dimensioned such that the blower housing can be rotated without effort, but on the other hand there are no creeping paths for the air or at least minimized. The 90 ° angles for the two openings are sufficient for high ventilation performance.

In den 90°-Zwischenstellungen werden die Einlaß- und die Auslaßöffnung mit Hilfe der erwähnten kreiszylinderschalenförmigen Innenflächen des Lüftungsvorrichtungsgehäuses verschlossen.In the 90 ° intermediate positions, the inlet and outlet openings are closed with the aid of the aforementioned circular cylindrical inner surfaces of the ventilation device housing.

Das Gebläsegehäuse ist gemäß einer bevorzugten Variante der Erfindung lediglich drehbar an einer Vorderwand der Vorrichtung oder einem Deckel dieser Vorderwand gelagert, wobei das freie Ende des im wesentlichen rohr- oder topfartigen Gebläsegehäuses an der Innenfläche der Vorrichtungs-Rückwand anliegt. Unter "freiem Ende" wird hier das von der Vorderwand entfernte Ende des Gebläsegehäuses verstanden. Wenn man den Deckel schließt oder bei abnehmbarem Deckel aufsetzt, so liegt dieses freie Ende in der Schließ-Endlage des Deckels bzw. der Vorderwand mit seiner stirnseitigen Endkante luftdichtan der in Gegenrichtung weisenden Innenfläche der Rückwand an. Wie das Ausführungsbeispiel zeigt, muß diese Endkante nicht notwendigerweise ein geschlossener Ring sein. Ob das Gebläsegehäuse eine Rohrform oder Topfform aufweist, hängt von der Konstruktion des Deckels bzw. der Vorderwand in diesem Bereich ab. Im Falle einer Topfform kann der Topfboden mit einem Durchbruch versehen sein, der in geeigneter Weise verschlossen wird und beispielsweise die Montage vereinfacht.According to a preferred variant of the invention, the blower housing is only rotatably mounted on a front wall of the device or a cover of this front wall, the free end of the essentially tubular or pot-like blower housing resting on the inner surface of the rear wall of the device. “Free end” is understood here to mean the end of the blower housing that is remote from the front wall. If you close the lid or put it on with a removable lid, this free end lies in the closed end position of the lid or the front wall with its front end edge airtight against the inner surface of the rear wall pointing in the opposite direction. As the exemplary embodiment shows, this end edge need not necessarily be a closed ring. Whether the blower housing has a tubular shape or a pot shape depends on the design of the cover or the front wall in this area. In the case of a pot shape, the bottom of the pot can be provided with an opening which is closed in a suitable manner and simplifies assembly, for example.

In sehr vorteilhafter weise ist das Gebläsegehäuse mit einem Drehglied an der Außenseite der Vorrichtungs-Vorderwand oder deren Deckel drehfest verbunden, wobei das Drehglied oder das Gebläsegehäuse in einer Bohrung der Vorrichtungs-Vorderwand oder deren Deckel gelagert ist. Insofern braucht man also beim Montieren des Deckels bzw. der Vorderwand das Gebläsegehäuse gegenüberden beiden Kanälen nicht besonders auszurichten, vielmehr kann man es bei geschlossenem Deckel in die jeweils gewünschte Drehlage bringen, so daß die Vorrichtung von innen nach außen oder von außen nach innen durchströmt wird.In a very advantageous manner, the blower housing is connected in a rotationally fixed manner to a rotary member on the outside of the device front wall or its cover, the rotary member or the blower housing being mounted in a bore in the device front wall or its cover. In this respect, the fan housing does not need to be particularly aligned with the two channels when mounting the cover or the front wall, but rather can be brought into the desired rotational position with the cover closed, so that the device is flowed through from the inside to the outside or from the outside to the inside .

Letzteres ist dann in besonders einfacher Weise möglich, wenn gemäß einer anderen Ausführungsform der Erfindung das Drehglied ein Drehstellung-Anzeigeglied, insbesondere einen zeigerartigen Drehknebel, aufweist, der mit einer Anzeigeskala od. dgl. an der Außenseite der Vorrichtungs-Vorderwand zusammen eine Anzeigevorrichtung bildet. Anstelle einer Anzeigeskata könnte auch eine Beschriftung vorgesehen werden, beispielsweise gemäß dem Ausführungsbeispiel die Beschriftung mit den Worten "Zuluft", "Abluft" oder "Zu".The latter is possible in a particularly simple manner if, in accordance with another embodiment of the invention, the rotary member has a rotary position display member, in particular a pointer-type rotary knob, which together with a display scale or the like forms a display device on the outside of the device front wall. Instead of a display skate, a label could also be provided, for example, according to the exemplary embodiment, the label with the words "supply air", "exhaust air" or "closed".

Eine weitere bevorzugte Ausführungsform der Erfindung kennzeichnet sich dadurch, daß der erste und der zweite Strömungskanal in Verlängerung voneinander verlaufen, wobei das äußere Ende des ersten Kanals mit dem Vorrichtungsboden und das äußere Ende des zweiten Kanals der Vorrichtungsrückwand zugeordnet ist. Dadurch eignet sich diese Lüftungsvorrichtung zur Anbringung an einer Außenwand mit einem entsprechenden Wanddurchbruch, der sich an den zweiten Strömungskanal anschließt. Wenn der erste Kanal am Vorrichtungsboden beginnt, so hat dies den Vorzug, daß eine Luftumlenkung entfällt, die bei einer seitlichen Kanalöffnung erforderlich wäre, jedoch muß die Lüftungsvorrichtung vom Boden einen ausreichend großen Abstand haben, der bei seitlichem oder vorderem Kanalende entfallen kann.A further preferred embodiment of the invention is characterized in that the first and the second flow channels extend from one another, the outer end of the first channel being assigned to the device base and the outer end of the second channel being assigned to the device rear wall. This ventilation device is therefore suitable for attachment to an outer wall with a corresponding wall opening which adjoins the second flow channel. If the first duct begins at the bottom of the device, this has the advantage that there is no air deflection, which would be required if the duct was opened at the side, but the ventilation device must be at a sufficiently large distance from the ground that can be omitted at the side or front end of the duct.

Der erste und der zweite Strömungskanal sind in Weiterbildung der Erfindung durch Dämmaterial gebildet und außerdem ist das Gebläsegehäuse aus Kunststoff, insbesondere mit schalldämmenden Eigenschaften, gefertigt. Das Dämmaterial kann bis an das Gehäuse der Lüftungsvorrichtung heranreichen oder aber aus einer Dämmauflage eines aus anderem Material gebildeten Strömungskanals bestehen. Beim Dämmaterial handelt es sich in erster Linie um Material zur Schalldämmung, durch welches Lüftergeräusche und Außengeräusche zurückgehalten werden. Die Kanaloberfläche kann im Bereich des Dämmstoffs verhautet sein.In a further development of the invention, the first and the second flow channels are formed by insulating material and, moreover, the fan housing is made of plastic, in particular with sound-insulating properties. The insulating material can extend as far as the housing of the ventilation device or can consist of an insulating layer of a flow channel formed from another material. The insulation material is primarily material for sound insulation, through which fan noise and outside noise are retained. The surface of the sewer can be knotted in the area of the insulation.

Im übringen trägt es zur Geräuschminderung sehr wesentlich bei, wenn man auch das Lüftergehäuse aus Kunststoff, insbesondere mit schalldämmenden Eigenschaften fertigt.In practice, it also contributes significantly to noise reduction if the fan housing is also made of plastic, in particular with sound-absorbing properties.

Die Erfindung wird nachstehend anhand der Zeichnung näher erläutert. Die Zeichnung zeigt ein Ausführungsbeispiel der Erfindung. Hierbei stellen dar:

  • Fig. 1 Die Lüftungsvorrichtung perspektivisch mit Blick auf die Unterseite,
  • Fig. 2 in explosionsartiger Darstellung die Lüftungsvorrichtung in der Stellung "Abluft" geöffnet,
  • Fign. 3 und 4 Darstellungen gemäß Fign. 1 und 2, jedoch in der Stellung "Zuluft".
The invention is explained below with reference to the drawing. The drawing shows an embodiment of the invention. Here represent:
  • 1 The ventilation device in perspective with a view of the underside,
  • 2 is an exploded view of the ventilation device in the "exhaust air" position,
  • Fig. 3 and 4 representations according to FIGS. 1 and 2, but in the "supply air" position.

Die Lüftungsvorrichtung besitzt ein quaderförmiges Gehäuse 1, welches an seiner Vorderseite offen und mittels einer im Querschnitt insbesondere U-förmigen Vorderwand 2 verschließbar ist. Das in der Zeichnung untere Ende des Gehäuses ist als abnehmbares Lüftungsgitter 3 ausgebildet. Es kann von einem Rahmen 4 umgeben und nicht näher gezeigten Weise öffnenbar sein. Es besteht zweckmäßigerweise aus schwenkbaren Lamellen.The ventilation device has a cuboid housing 1, which is open on its front side and can be closed by means of a front wall 2, which in particular has a U-shaped cross section. The lower end of the housing in the drawing is designed as a removable ventilation grille 3. It can be surrounded by a frame 4 and can be opened in a manner not shown. It expediently consists of swiveling slats.

Das Gehäuse 1 hat einen U-förmigen Außenmantel 5 aus Metall oder stabilem Kunststoff sowie eine aus Schalldämmaterial bestehende, zweckmäßigerweise ebenfalls U-förmige Auskleidung 6, wobei die Schenkel der letzteren nach unten weisen, während diejenigen des Außenmantels nach vorne gerrichtet sind. Die Auskleidung 6 kann einstückig mit einer rückwärtigen Dämmplatte 7 gefertigt sein oder daran luftdicht anliegen. Außerdem sind an den beiden Schenkeln der Auskleidung 6 Auskehlungen angebracht, die einander gegenüberliegen und kreiszylinderschalenförmige Innenflächen 8 und 9 bilden. An ihnen liegt bei aufgesetzter Vorderwand 2 das damit im Sinne des Doppelpfeils 10 drehbar verbundene Gebläsegehäuse 11 spielfrei oder mit minimalen Spiel an. Letzteres besteht zweckmäßigerweise auch aus schalldämmendem Material und es besitzt, abgesehen von seinen radialen Druchbrüchen einen kreiszylindrischen Außenmantel 33. Exzentrisch dazu ist ein kreiszylinderförmiger Innenmantel 12 vorgesehen, so daß sich die Wandstärke in Umfangsrichtung über 180° von einem maximalen Wert bis zu einem minimalen Wert stetig verändert und dadurch eine zumindest angenäherte Spiralform des Gebläsegehäuses vorliegt, wie man sie bei Radialgebläsen benötigt.The housing 1 has a U-shaped outer jacket 5 made of metal or stable plastic and a soundproofing material, expediently also U-shaped lining 6, the legs of the latter facing downwards, while those of the outer jacket are directed forward. The lining 6 can be made in one piece with a rear insulation panel 7 or rest there against it in an airtight manner. In addition, 6 grooves are provided on the two legs of the lining, which lie opposite one another and form inner surfaces 8 and 9 in the form of cylindrical cylinders. When the front wall 2 is attached, the fan housing 11, which is rotatably connected in the sense of the double arrow 10, bears against them without play or with minimal play. The latter expediently also consists of sound-absorbing material and, apart from its radial breakthroughs, it has a circular-cylindrical outer jacket 33. A circular-cylindrical inner jacket 12 is provided eccentrically to this, so that the wall thickness in the circumferential direction continuously increases over 180 ° from a maximum value to a minimum value changed and thereby an at least approximate spiral shape of the blower housing is present, as is required for radial blowers.

Bei eingesetztem Gebläsegehäuse 11 entsteht unterhalb des letzteren ein ersten Kanal 13 und oberhalb ein zweiter Kanal 14. Bei der in den Fign. 1 und 2 vorgesehenen Drehlage des Gebläsegehäuses 11 ist der erste Strömungskanal 13 der Zuströmkanal und der zweite Strömungskanal 14 der Abströmkanal der Lüftungsvorrichtung. Beim Ausführungsbeispiel haben diese beiden Kanäle einen rechteckigen Querschnitt, wobei der erste Strömungskanal 13 gegen das Lüftungsgitter 3 hin etwas aufgeweitet sein kann. Im übrigen kann die Ebene des Lüftungsgitters abweichend von der Zeichnung auch geneigt zur Horizontalebene verlaufen, bei entsprechender Anpassung von Strömungskanal und Lüftungsgitter. Der Strömungsverlauf ist in Fig. 1 durch den Pfeil 15 symbolisiert. Der Raum wird in dieser Einstellung des Gebläsegehäuses 11 entlüftet. Die Raumluft tritt im Sinne des Pfeils 16 über das Lüftungsgitter 3 in den ersten Kanal ein, durchläuft das Gebläse in axialer Richtung und tritt dann radial in den zweiten Strömungskanal 14 ein. In diesem wird der Luftstrom rechtwinklig umgelenkt, um dann über den Durchbruch 17 der Gehäuserückwand in die Atmosphäre abzuströmen, wobei sich an den Durchbruch 17 ein nicht gezeigter Mauerdurchbruch oder ein weiterführender Luftstutzen unmittelbar anschließen kann. Im übrigen befindet sich an der Oberseite des Gehäuses ein Deckelaufsatz 19 mit einem Hauptschalter 20 zum Einschalten des Lüftermotors 21 und einem weiteren Betätigungsorgan 22, zur insbesondere stufenweisen Änderung der Motordrehzahl. Der Lüftermotor 21 treibt in bekannter Weise das Gebläserad 23 an.When the blower housing 11 is inserted, a first duct 13 is formed below the latter and a second duct 14 is formed above. 1 and 2 provided rotational position of the blower housing 11, the first flow channel 13 is the inflow channel and the second flow channel 14 is the outflow channel of the ventilation device. In the exemplary embodiment, these two channels have a rectangular cross section, and the first flow channel 13 can be somewhat widened towards the ventilation grille 3. For the rest, the plane of the ventilation grille can deviate from the drawing and also incline to the horizontal plane, with a corresponding adjustment of the flow channel and ventilation grille. The flow pattern is symbolized in FIG. 1 by arrow 15. The room is vented in this setting of the blower housing 11. The room air enters the first duct in the direction of arrow 16 via the ventilation grille 3, passes through the fan in the axial direction and then enters the second flow duct 14 radially. In this, the air flow is deflected at a right angle in order to then flow into the atmosphere via the opening 17 in the rear wall of the housing, it being possible for a wall opening (not shown) or a further air connection piece to connect directly to the opening 17. For the rest, on the top of the housing there is a cover attachment 19 with a main switch 20 for switching on the fan motor 21 and a further actuating member 22, in particular for gradually changing the motor speed. The fan motor 21 drives the impeller 23 in a known manner.

Wie man insbesondere auch aus den Fign. 2 und 4 deutlich sieht, ist der Mantel des topfförmigen Gebläsegehäuses 11 mit zwei einander gegenüberliegenden Durchbrüchen versehen. Der in Fig. 2 obere Durchbruch reicht bis zur freien Stirnkante 24 und er erstreckt sich in axialer Richtung über etwa 2/3 bis 3/4 der Gehäusehöhe 25. In Umfangsrichtung erstreckt sich sowohl diese randoffene Auslaßöffnung 26 als auch die ihr in radialer Richtung gegenüberliegende Einla- ßöffnung 27 über etwa 90° oder einen etwas kleineren Winkel.As can be seen in particular from FIGS. 2 and 4 clearly sees, the jacket of the pot-shaped fan housing 11 is provided with two mutually opposite openings. The upper opening in FIG. 2 extends to the free end edge 24 and it extends in the axial direction over approximately 2/3 to 3/4 of the housing height 25. In the circumferential direction, this outlet opening 26, which is open at the edge, and the one opposite it in the radial direction, extends Inlet opening 27 over approximately 90 ° or a somewhat smaller angle.

Die Einlaßöffnung 27 ist dem vorzugsweise als Zwischenboden ausgebildeten Boden 28 zugeordnet und sie erstreckt sich von diesem aus in axialer Richtung über etwa 1/4 oder 1/3 der Gehäusehöhe 25.The inlet opening 27 is assigned to the base 28, which is preferably designed as an intermediate base, and extends from it in the axial direction over approximately 1/4 or 1/3 of the housing height 25.

In Fig. 4 ist das Gebläsegehäuse 11 gegenüber der Stellung nach Fig. 2 um 180° gedreht. Infolgedessen kehrt sich die Strömungsrichtung in der Lüftungsvorichtung um, was durch den Pfeil 29 (Fig. 3) symbolisiert wird. Die Außenluft strömt im Sinne des Pfeils 30 in den zweiten Strömungskanal 14 ein und strömt über die nunmehr unten liegende Auslaßöffnung 26 des Radialgebläses 32 in den ersten Strömungskanal 13. Diesen verläßt sie über das Lüftungsgitter 3 und gelangt schließlich im Sinne des Pfeils 31 in den mit dieser Lüftungsvorrichtung ausgestatteten Raum.In Fig. 4 the fan housing 11 is rotated by 180 ° with respect to the position shown in FIG. 2. As a result, the direction of flow in the ventilation device is reversed, which is symbolized by arrow 29 (FIG. 3). The outside air flows in the direction of arrow 30 into the second flow channel 14 and flows through the outlet opening 26 of the radial fan 32, which is now located below, into the first flow channel 13. This leaves it via the ventilation grille 3 and finally arrives in the direction of the arrow 31 into the room equipped with this ventilation device.

Weil in den beiden, in den Fign. 1 und 3 dargestellten Drehstellungen des Gebläsegehäuses 11 die zwischen der Einlaßöffnung 27 und der Auslaßöffnung 26 gelegenen Wandungsteile des Gebläsegehäuses 11 an den ihnen zugeordneten kreiszylinderschalenförmigen Innenflächen 8 bzw. 9 des Vorrichtungsgehäuses 1 anliegen -wobei allenfalls ein das Drehen ermöglichendes Spiel zwischen den zugeordneten Flächen vorhanden ist- und auch in axialer Richtung die Schleichwege für die Luft unterbunden sind, wird das Vorrichtungsgehäuse entweder im Sinne des Pfeils 15 oder des Pfeils 29 durchströmt, je nachdem in welcher Richtung das Gebläse fördert.Because in the two, in Figs. 1 and 3 shown rotational positions of the blower housing 11, the wall parts of the blower housing 11 located between the inlet opening 27 and the outlet opening 26 abut against the associated circular cylindrical shell-shaped inner surfaces 8 and 9 of the device housing 1, whereby at most there is a play allowing rotation between the assigned surfaces - And also in the axial direction the creeping paths for the air are prevented, the device housing is flowed through either in the direction of arrow 15 or arrow 29, depending on the direction in which the fan is conveying.

Auch bei stillstehendem Gebläse findet aufgrund des Wärme- und/oder Druckunterschieds ein Luftaustausch zwischen Einlaß und Auslaß der Lüftungsvorrichtung statt. Auf der anderen Seite kann man aber durch eine 90°-Drehung des Gebläsegehäuses 11 die Einlaßöffnung 27 und die Auslaßöffnung 26 den kreiszylinderschalenförmigen Innenflächen 8 bzw. 9 zuordnen. Weil diese Öffnungen in Umfangsrichtung über die Innenflächen 8 und 9 nicht vorstehen, wird der natürliche Luftdurchsatz durch die Lüftungsvorrichtung in dieser Drehstellung "ZU" unterbunden.Even when the fan is stopped, an air exchange takes place between the inlet and outlet of the ventilation device due to the difference in heat and / or pressure. On the other hand, the inlet opening 27 and the outlet opening 26 can be assigned to the inner cylindrical surfaces 8 and 9, respectively, by rotating the blower housing 11 by 90 °. Because these openings do not protrude in the circumferential direction over the inner surfaces 8 and 9, the natural air throughput is prevented by the ventilation device in this rotational position "CLOSED".

Das Gebläsgehäuse 11 ist mit einem Drehglied 34 an der Außenseite der Vorrichtungsvorderwand 2 drehfest verbunden. Dabei durchsetzt das Drehglied und/oder das Gebläsegehäuse 11 diese Vorderwand 2, wobei eines der beiden Teile unmittelbar in einer Bohrung der Vorderwand 2 drehbar gelagert ist. Des weiteren besitzt das Drehglied 34 ein Drehstellungs-Anzeigeglied 35, wobei es sich beim Ausführungsbeispiel um einen zeigerförmigen Drehknebel handelt. Er arbeitet in nicht gezeigter Weise mit einer Anzeigeskala zusammen oder aber mit entsprechenden ortsfesten Markierungen an der Außenseite der Vorderwand 2, beispielsweise mit den Worten "Abluft", "Zuluft" oder zweimal dem Wort "ZU". Aufgrund der Zeigerform und der Anordnung dieser vier Worte im Winkel von jeweils 90° zueinander kann man von außen leicht die jeweilige Stellung des Gebläsegehäuses 11 und damit auch die Strömungsrichtung 15 oder 29 rasch erkennen bzw. die richtige Einstellung leicht wählen.The blower housing 11 is connected in a rotationally fixed manner to a rotary member 34 on the outside of the device front wall 2. The rotary member and / or the blower housing 11 passes through this front wall 2, one of the two parts being rotatably mounted directly in a bore in the front wall 2. Furthermore, the rotary member 34 has a rotary position display member 35, which is a pointer-shaped rotary knob in the exemplary embodiment. He works in a manner not shown with a display scale or with corresponding fixed markings on the outside of the front wall 2, for example with the words "exhaust air", "supply air" or twice the word "CLOSE". Due to the shape of the pointer and the arrangement of these four words at an angle of 90 ° to each other, the respective position of the blower housing 11 and thus also the direction of flow 15 or 29 can be quickly recognized from the outside or the correct setting can be easily selected.

Claims (6)

1. Ventilation apparatus with a radial ventilator (32) the drivable ventilator wheel (33) of which, may be rotated in a ventilator housing (11) with at least in each case an inlet opening (27) which can be flowed through in a radial manner and an outlet opening (26), the inlet and outlet openings being offset against one another in the axial direction of the ventilator and a first as well as a second flow duct (13 or 14) ending at the ventilator housing (11) and each of the housing openings (26, 27) of the ventilator housing which is mounted in a rotatable or displaceable manner being attachable optionally to the first or second flow duct, in addition the ventilator housing (11) having a circular cylindrical outer cover (33) on which, the inlet and outlet openings are disposed, in particular opposite one another, and for this purpose a crescent-shaped inner cover (12) of the ventilator housing is eccentrically arranged, characterized in that the housing parts of the ventilator housing (11) which are between the inlet opening (27) and the outlet opening (26) are situated at circular cylindrically-shaped inner surfaces (8, 9) of the apparatus housing (1) with if necessary a slight clearance, the inner end of the first flow duct (13) being associated with one end of these inner surfaces (8, 9) and the inner end of the second flow duct (14) being associated with the other end, moreover the inlet and outlet openings of the ventilator housing (11) as well as the circular cylindrically-shaped inner surfaces (8, 9) of the apparatus housing (1) also extending in each case over approximately 90°.
2. Apparatus according to claim 1, characterized in that the ventilator housing (11) is mounted only in a rotatable manner on a front wall (2) of the apparatus or on a cover of this front wall, the free end (24) of the essentially tubular or pot-like ventilator housing (11) being disposed on the inner surface of the rear wall (7) of the apparatus.
3. Apparatus according to claims 1 or 2, characterized in that the ventilator housing (11) is connected in a rotatably rigid manner to a rotating member (34) on the outer side of the front wall (2) of the apparatus or the cover thereof, the rotating member (34) or the ventilator housing (11) being mounted in a bore hole of the front wall (2) of the apparatus or the cover thereof.
4. Apparatus according to claim 3, characterized in that the rotating member (34) has a rotating position indicator member (35), in particular an indicator-like rotating toggle, which with an indicator scale or the like together forms an indicator apparatus on the outer side of the front wall (2) of the apparatus.
5. Apparatus according to at least one of the preceding claims, characterized in that the first and the second flow ducts (13, 14) extend in the extension of one another, the outer end of the first duct (13) being associated with the base (3) of the apparatus and the outer end of the second duct (14) being associated with the rear wall (7) of the apparatus.
6. Apparatus according to at least one of the preceding claims, characterized in that the first and the second flow ducts (13, 14) are formed by means of insulating material and the ventilator housing (11) is formed by synthetic materials, in particular material with sound absorbing properties.
EP88100293A 1987-01-21 1988-01-12 Ventilation apparatus Expired - Lifetime EP0275896B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88100293T ATE59886T1 (en) 1987-01-21 1988-01-12 VENTILATION DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8700956U DE8700956U1 (en) 1987-01-21 1987-01-21 Ventilation device
DE8700956U 1987-01-21

Publications (3)

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EP0275896A2 EP0275896A2 (en) 1988-07-27
EP0275896A3 EP0275896A3 (en) 1989-09-20
EP0275896B1 true EP0275896B1 (en) 1991-01-09

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ID=6803828

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EP88100293A Expired - Lifetime EP0275896B1 (en) 1987-01-21 1988-01-12 Ventilation apparatus

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AT (1) ATE59886T1 (en)
DE (2) DE8700956U1 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
DE9206729U1 (en) * 1992-02-03 1993-06-03 Berner, Erling, Zug Device for reversing an air flow within a shaft

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Publication number Priority date Publication date Assignee Title
DE9002208U1 (en) * 1990-02-24 1991-07-04 Siegenia-Frank Kg, 5900 Siegen Ventilation device for rooms
AT508535B1 (en) * 2009-07-29 2016-01-15 Vossloh Kiepe Ges M B H HEATING, AIR CONDITIONING AND VENTILATION SYSTEM
DE102012014417B4 (en) 2012-07-20 2017-12-07 Klaus-Dieter Jendrosch Device for measuring the airtightness of a building envelope
KR102511840B1 (en) * 2016-09-05 2023-03-20 엘지전자 주식회사 Bathroom management apparatus
KR102544918B1 (en) * 2016-09-05 2023-06-16 엘지전자 주식회사 Bathroom management apparatus
WO2020246912A1 (en) * 2019-06-04 2020-12-10 Виктор Александрович ГАВРИЛЕНКО Supply and exhaust ventilation apparatus

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US2363191A (en) * 1942-02-23 1944-11-21 Motor Wheel Corp Air circulator
FR1069415A (en) * 1953-01-05 1954-07-07 Radial blower
DE1403496A1 (en) * 1961-07-01 1969-01-30 Daimler Benz Ag Cooling or hot air blower
GB1486461A (en) * 1975-05-13 1977-09-21 Greenwood Airvac Ventilation Ventilator incorporating centrifugal fan
FR2406107A1 (en) * 1977-10-11 1979-05-11 Vierling Charles Thermal and acoustic ventilation of mechanical ventilator - with spiral of centrifugal fan moulded in synthetic cellular material
DE2922956A1 (en) * 1979-06-06 1980-12-11 Mulfingen Elektrobau Ebm FAN UNIT FOR COOKER HOODS FOR SWITCHING EXHAUST AIR (ABOVE), EXHAUST AIR (REAR) AND EXHAUST AIR

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9206729U1 (en) * 1992-02-03 1993-06-03 Berner, Erling, Zug Device for reversing an air flow within a shaft

Also Published As

Publication number Publication date
ATE59886T1 (en) 1991-01-15
DE3861467D1 (en) 1991-02-14
EP0275896A3 (en) 1989-09-20
EP0275896A2 (en) 1988-07-27
DE8700956U1 (en) 1987-03-05

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