EP2876305B1 - Ventilator unit - Google Patents

Ventilator unit Download PDF

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Publication number
EP2876305B1
EP2876305B1 EP14187394.3A EP14187394A EP2876305B1 EP 2876305 B1 EP2876305 B1 EP 2876305B1 EP 14187394 A EP14187394 A EP 14187394A EP 2876305 B1 EP2876305 B1 EP 2876305B1
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EP
European Patent Office
Prior art keywords
fan
housing
dimension
chamber
axial
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.)
Active
Application number
EP14187394.3A
Other languages
German (de)
French (fr)
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EP2876305A1 (en
Inventor
Thomas Heli
Christian Schler
Ralf Balbach
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.)
Ebm Papst Mulfingen GmbH and Co KG
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Ebm Papst Mulfingen GmbH and Co KG
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Publication of EP2876305A1 publication Critical patent/EP2876305A1/en
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Publication of EP2876305B1 publication Critical patent/EP2876305B1/en
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Classifications

    • 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
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/545—Ducts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/002—Axial flow fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • 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
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/02—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/046—Construction

Definitions

  • the invention relates to a fan assembly of a diagonal and / or axial fan.
  • Such fan units are used as part of a filter fan for industrial equipment, such.
  • the fan assemblies can be designed both as a blowing fan assembly and as a sucking fan assembly.
  • the fan assembly includes a fan having an axial fan or diagonal fan as a fluid drive of the fan assembly and is bolted to a filter frame via a mounting flange of the housing of the fan assembly.
  • the housing of the fan assembly on both sides of a protective grid.
  • the housing is divided perpendicularly to the axis of the fan wheel in the region of the housing edge into at least two detachably interconnected housing parts, the motor mounting part and the air inlet part.
  • Both the engine mount part and the air intake part are each formed in one piece and comprise a protective grid structure.
  • the protective grid structure of the motor mounting part has a motor mount with fastening means for fastening the fan.
  • the division of the housing in two halves together with the one-piece design allows a particularly simple installation of the fan in the housing of the fan assembly.
  • the housing and the fan assembly are particularly simple and inexpensive to manufacture and the design of the fan assembly is designed to be particularly compact.
  • Generic fan assemblies can be arranged like a cassette to an air treatment device.
  • an air treatment device for example, from the US patent US 8,398,365 B2
  • Such an air treatment device is known in which a plurality of fan assemblies are arranged with rectangular outer contours in the form of an air treatment device.
  • the rectangular outer contour makes it possible to arrange the fan units in the radial direction as close as possible to each other and thus to increase the packing density of the fan units.
  • a disadvantage of such air treatment devices is the noise emission.
  • the cited US patent teaches to cover the boundaries of the flow channel with soundproofing materials such as glass fiber reinforced plastic and foam. Fan assemblies with such panels but are expensive to manufacture. In addition, such panels devour space, so that the external dimension of the fan assembly increases and thus the packing density is reduced.
  • the publication US 4,750,860 A describes an improved fan for mounting in an opening in a mounting plate includes fan blades that are rotatable about an axis within a cylindrical Ge housing. The fan blades move air through the opening in the mounting plate.
  • a cylindrical, open-cell foam collar surrounds the fan housing. The collar extends upstream. The foam collar reduces the noise of the fan by damping the vibration of the case and by providing a barrier to sound waves in the air.
  • the foam collar directs the airflow before entering the fan blades so that it is more laminar and less turbulent to increase the efficiency of the fan.
  • the publication GB 2 502 103 A discloses a fan for generating an airflow comprising a body having an air inlet and a nozzle connected to the body.
  • the nozzle has an inner passage and an air outlet from which the air flow is discharged from the fan.
  • the inner passage extends through an aperture or bore through which air is drawn from outside the nozzle and blown out through the air outlet.
  • the body has a channel with a first end defining an air inlet and a second end opposite the first end with an air outlet.
  • An impeller for drawing air through the duct and a motor for driving the impeller are mounted within the duct.
  • a noise suppression cavity is mounted below the air inlet of the channel, the cavity having an inlet disposed below and preferably formed concentric with the air inlet of the channel.
  • the publication EP 2 503 159 A2 discloses an axial fan with a movable vane for generating an airflow by rotation, wherein the vane and an adapter are releasably attached to the housing.
  • the adapter has a fitting for attachment to the inner surface of the housing.
  • the adapter forms a projection or step on the inner surface of the housing.
  • the publication JP 2007 218150 A discloses a device having a housing with a cylindrical air duct part in a body part or the like and a rotor provided in the air duct and provided with a plurality of vanes.
  • the housing with the body part surrounds a rotor having a continuous surface and a turbulence prevention member extending from the body part to a part in an air inlet passage side of the rotor.
  • the turbulence preventing member includes pores through which air circulates between the air passage side and an outside of the turbulence prevention member.
  • the object of the invention is to provide a fan assembly with minimized noise, wherein the external dimension of the fan assembly is minimized. According to the invention this object is achieved by a fan assembly with the features of independent claim 1. Advantageous developments of the fan assembly result from the subclaims 2 to 6.
  • the fan assembly has a housing provided with an inlet opening and an outlet opening.
  • a fan is accommodated, wherein the fan may be an axial or radial fan. In any case, the fan promotes the air at least in the axial direction.
  • the housing is divided perpendicular to the central axis of the fan into at least two interconnected housing parts, namely the motor mounting part and the air inlet part.
  • the housing forms a running chamber in which the blades of the fan are rotatably received about the axis of the fan. Furthermore, the housing has a circumferential, radially extending edge, in the region of which the housing has a thickness B lying in the axial direction of the fan.
  • the engine mount part has a Axial direction of the fan lying thickness B has.
  • the motor mount part has a dimension R as the maximum extension in the edge area in the axial direction of the fan.
  • the running chamber has an extent in the axial direction of the fan in the amount of the dimension L, while the extension of the air inlet part in the axial direction of the fan in the region of the running chamber has a dimension T.
  • the diameter of the running chamber is about 1.04 times the outer diameter of the fan wheel. This creates a gap between the outside diameter of the impeller and the diameter of the barrel chamber of about 2% of the outside diameter of the fan, further minimizing the noise emission of the fan during operation.
  • the housing has a substantially rectangular outer contour in plan view.
  • fan assemblies according to the invention can be arranged in the manner of a cassette to form an air treatment device, so that a plurality of fan assemblies with rectangular outer contours can be arranged in the form of an air treatment device.
  • the rectangular outer contour makes it possible to arrange the fan units in the radial direction as close as possible to each other and thus to increase the packing density of the fan units.
  • the motor mounting part has an immersion dimension E and the air inlet part likewise to have the immersion dimension E, the immersion depth a being the ratio of the immersion dimension E to the maximum axial extent C of the housing in the axial direction of the ventilator in the range of 0.2 to 0.35 is.
  • E a * C, where 0.2 ⁇ a ⁇ 0.35.
  • the ratio of maximum outer dimension K of the housing to the impeller diameter D is 1.15 at most.
  • K denotes the outer diameter in the case of a circular outer geometry of the housing.
  • a substantially square outer contour of the housing K denotes the edge dimension of the longest side of the housing.
  • the housing has a peripheral wall ring, wherein the wall ring has a circumferential Holhlhunt, hereinafter also referred to as a hollow chamber ring.
  • the wall ring is formed by the edge region of the air inlet part and / or the motor mounting part. Due to the design as a hollow chamber ring on the one hand a high mechanical stability of the fan assembly is given, while on the other hand, the noise emission during operation is further minimized.
  • Fig. 1 shows a section through a fan assembly according to the invention.
  • the fan assembly 100 has a housing 110 provided with an inlet port 131 and an exhaust port 121.
  • the housing 110 is designed as a housing with a substantially square outer contour.
  • an axial fan 150 is received, which promotes the air at least in the axial direction.
  • the housing 110 is designed in two parts, wherein it has a dividing plane substantially perpendicular to the axis XX of the fan 150.
  • the two interconnected housing parts are the one hand
  • the housing 110 forms in its center a running chamber 111 in which the wings 151 of the axial fan 150 can rotate about the axis XX of the axial fan 150.
  • the housing 110 forms a circumferential edge region 122, 132, in the region of which the housing 110 has a thickness B lying in the axial direction XX of the axial fan 150.
  • the motor mounting part 120 has a dimension R as the maximum extent in the edge region 122 in the axial direction XX of the axial fan 150.
  • the running chamber 111 has an extent in the axial direction XX of the axial fan 150 in the amount of the dimension L, while the extension of the air inlet part 130 in the axial direction XX of the axial fan 150 in the running chamber 111 has a dimension T.
  • the ratio of measure B to measure R is the ratio of measures L to T in the range of 0.9 to 1.2.
  • B / R b * L / T with 0.9 ⁇ b ⁇ 1.2.
  • This geometry ratio minimizes the noise emissions of the axial fan 150, so that no existing noise emissions must be damped to achieve a quiet running noise.
  • the size of the fan assembly 100 can be minimized.
  • a plurality of fan assembly units 100 with maximum packing density can be installed next to one another in the form of a cassette.
  • the diameter D of the fan wheel can be maximized in relation to the outer dimension K of the housing 110, whereby the fan power is also maximized in relation to the required area of the fan assembly.
  • this ratio is 1.15.
  • the diameter D K of the running chamber 111 is 4% larger than the outside diameter D of the fan wheel. This creates a gap between the outer diameter of the fan and the diameter of the running chamber D K of about 2% of the outer diameter of the fan, whereby the noise emission of the fan 150 is further minimized in operation.
  • the housing 110 has a circumferential wall ring with a square outer contour, wherein the wall ring has a circumferential Holhlhunt 115. Due to the design as a hollow chamber ring on the one hand a high mechanical stability of the fan assembly 100 is given against bending and twisting, while on the other hand, the noise emission during operation is further minimized.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Multimedia (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Die Erfindung betrifft eine Lüfterbaueinheit eines Diagonal- und/oder Axiallüfters.The invention relates to a fan assembly of a diagonal and / or axial fan.

Derartige Lüfterbaueinheiten werden als Teil eines Filterlüfters für industrielle Anlagen, wie z. B. Schaltschränke verwendet. Dabei können die Lüfterbaueinheiten sowohl als blasende Lüfterbaueinheit als auch als saugende Lüfterbaueinheit ausgebildet sein.Such fan units are used as part of a filter fan for industrial equipment, such. As cabinets used. In this case, the fan assemblies can be designed both as a blowing fan assembly and as a sucking fan assembly.

Beispielsweise ist aus der deutschen Gebrauchsmusterschrift DE 20 2009 017 511 U1 der Anmelderin eine Lüfterbaueinheit bekannt. Die Lüfterbaueinheit weist einen Lüfter mit einem Axiallüfterrad oder Diagonallüfterrad als Strömungsantrieb der Lüfterbaueinheit auf und wird mit einem Filterrahmen über einen Befestigungsflansch des Gehäuses der Lüftungsbaueinheit verschraubt. Als Schutz der Lüfterbaueinheit beziehungsweise als Berührungsschutz weist das Gehäuse der Lüfterbaueinheit beidseitig ein Schutzgitter auf. Bei der Lüfterbaueinheit ist das Gehäuse senkrecht zur Achse des Lüfterrades im Bereich des Gehäuserandes in mindestens zwei lösbar miteinander verbundene Gehäuseteile, das Motorhalterungsteil und das Lufteinlassteil, geteilt. Sowohl das Motorhalterungsteil als auch das Lufteinlassteil sind jeweils einstückig ausgebildet und umfassen eine Schutzgitterstruktur. Die Schutzgitterstruktur des Motorhalterungsteils weist eine Motoraufnahme mit Befestigungsmitteln zur Befestigung des Lüfters auf. Die Teilung des Gehäuses in zwei Hälften zusammen mit der einstückigen Ausgestaltung ermöglicht einen besonders einfachen Einbau des Lüfters in das Gehäuse der Lüfterbaueinheit. Außerdem sind dadurch das Gehäuse und die Lüfterbaueinheit besonders einfach und kostengünstig herzustellen und die Bauform der Lüfterbaueinheit ist besonders kompakt zu gestalten.For example, from the German Utility Model DE 20 2009 017 511 U1 the applicant a fan assembly known. The fan assembly includes a fan having an axial fan or diagonal fan as a fluid drive of the fan assembly and is bolted to a filter frame via a mounting flange of the housing of the fan assembly. As protection of the fan assembly or as protection against contact, the housing of the fan assembly on both sides of a protective grid. In the case of the fan assembly, the housing is divided perpendicularly to the axis of the fan wheel in the region of the housing edge into at least two detachably interconnected housing parts, the motor mounting part and the air inlet part. Both the engine mount part and the air intake part are each formed in one piece and comprise a protective grid structure. The protective grid structure of the motor mounting part has a motor mount with fastening means for fastening the fan. The division of the housing in two halves together with the one-piece design allows a particularly simple installation of the fan in the housing of the fan assembly. In addition, thereby the housing and the fan assembly are particularly simple and inexpensive to manufacture and the design of the fan assembly is designed to be particularly compact.

Gattungsgemäße Lüfterbaueinheiten können kassettenartig zu einer Luftbehandlungsvorrichtung angeordnet werden. Beispielsweise ist aus der USamerikanischen Patentschrift US 8,398,365 B2 eine solche Luftbehandlungsvorrichtung bekannt, bei der mehrere Lüfterbaueinheiten mit rechteckigen Außenkonturen in Form einer Luftbehandlungsvorrichtung angeordnet sind. Die rechteckige Außenkontur ermöglicht dabei, die Lüfterbaueinheiten in radialer Richtung möglichst dicht zueinander anzuordnen und somit die Packungsdichte der Lüfterbaueinheiten zu erhöhen. Ein Nachteil solcher Luftbehandlungsvorrichtungen besteht in der Geräuschemission. Die zitierte US-Patentschrift lehrt dazu, die Begrenzungen des Strömungskanals mit Schallschutzmaterialen wie glasfaserverstärktem Kunststoff und Schaumstoff zu verkleiden. Lüfterbaueinheiten mit solchen Verkleidungen sind aber in der Herstellung aufwändig. Darüber hinaus verschlingen derartige Verkleidungen Bauraum, so dass das Außenmaß der Lüfterbaueinheit vergrößert und damit die Packungsdichte verkleinert wird.Generic fan assemblies can be arranged like a cassette to an air treatment device. For example, from the US patent US 8,398,365 B2 Such an air treatment device is known in which a plurality of fan assemblies are arranged with rectangular outer contours in the form of an air treatment device. The rectangular outer contour makes it possible to arrange the fan units in the radial direction as close as possible to each other and thus to increase the packing density of the fan units. A disadvantage of such air treatment devices is the noise emission. The cited US patent teaches to cover the boundaries of the flow channel with soundproofing materials such as glass fiber reinforced plastic and foam. Fan assemblies with such panels but are expensive to manufacture. In addition, such panels devour space, so that the external dimension of the fan assembly increases and thus the packing density is reduced.

Die gleichen Nachteile bringen auch die Lüfterbaueinheiten mit, die in den Dokumenten GB 2 499 356 A , US 4 750 860 A , GB 2 502 103 A , EP 2 503 159 A2 und JP 2007 218150 A beschreiben werden:

  • Die Druckschrift GB 2 499 356 A beschreibt einen Lüfter mit einem Hauptkörper, einem Luftkanal, einem Laufrad und einen Motor. Der Hauptkörper formt einen Zylinder, dessen eines Ende eine Austrittsöffnung und das andere Ende mit eine Einlassöffnung bildet, wobei der Luftkanal im Inneren des Hauptkörpers aus der Einlassöffnung und der Austrittsöffnung gebildet wird. Eine kreisförmige Öffnung befindet sich an dem Innenumfang des Luftkanals und verengt teilweise den Luftkanal. Das Laufrad ist in dem Abschnitt des Luftkanals angeordnet, die von der Öffnung verengt ist. Der Motor ist mit dem Laufrad verbunden und bewirkt, dass das Laufrad dreht und Luft, die von der Einlassöffnung angesaugt wurde, aus der Abgabeöffnung ausbläst.
The same disadvantages also bring with the fan units that in the documents GB 2 499 356 A . US 4,750,860 A . GB 2 502 103 A . EP 2 503 159 A2 and JP 2007 218150 A will be described:
  • The publication GB 2 499 356 A describes a fan with a main body, an air duct, an impeller and a motor. The main body forms a cylinder whose one end forms an outlet opening and the other end with an inlet opening, wherein the air channel is formed inside the main body of the inlet opening and the outlet opening. A circular opening is located on the inner circumference of the air duct and partially narrows the air duct. The impeller is disposed in the portion of the air duct which is narrowed by the opening. The motor is connected to the impeller and causes the impeller to rotate and expel air sucked from the inlet opening out of the discharge opening.

Die Druckschrift US 4 750 860 A beschreibt einen verbesserten Lüfter zur Befestigung in einer Öffnung in einer Montageplatte umfasst Lüfterblätter, die um eine Achse innerhalb eines zylindrischen Ge-häuses drehbar sind. Die Lüfterblätter bewegen Luft durch die Öffnung in der Montageplatte. Ein zylindrischer, offenzelliger Schaumstoffkragen umgibt das Lüftergehäuse. Der Kragen erstreckt sich stromaufwärts. Der Schaumstoffkragen verringert die Störgeräusche des Gebläses durch Dämpfung der Vibrationen des Gehäuses und durch eine Barrierewirkung gegenüber den Schallwellen in der Luft.
Darüber hinaus richtet der Schaumstoffkragen den Luftstrom vor dem Eintritt in die Ventilator-schaufeln so dass es mehr laminar und weniger turbulent ist, um den Wirkungsgrad des Lüfters zu erhöhen.The publication US 4,750,860 A describes an improved fan for mounting in an opening in a mounting plate includes fan blades that are rotatable about an axis within a cylindrical Ge housing. The fan blades move air through the opening in the mounting plate. A cylindrical, open-cell foam collar surrounds the fan housing. The collar extends upstream. The foam collar reduces the noise of the fan by damping the vibration of the case and by providing a barrier to sound waves in the air.
In addition, the foam collar directs the airflow before entering the fan blades so that it is more laminar and less turbulent to increase the efficiency of the fan.

Die Druckschrift GB 2 502 103 A offenbart ein Gebläse zum Erzeugen eines Luftstroms umfassend einen Körper mit einem Lufteinlass und eine mit dem Körper verbundene Düse. Die Düse weist einen inneren Durchgang und einen Luftauslass auf, aus dem der Luftstrom von dem Gebläse abgegeben wird. Der innere Durchgang erstreckt sich über eine Öffnung oder Bohrung, durch die Luft von außerhalb der Düse angesogen und durch den Luftauslass ausgeblasen wird.
Der Körper weist einen Kanal mit einem ersten Ende auf, das einen Lufteinlass definiert, und ein zweites Ende gegenüber dem ersten Ende mit einem Luftauslass. Ein Laufrad zum Ansaugen von Luft durch den Kanal und ein Motor zum Antrieb des Laufrad ist innerhalb des Kanals angebracht. Ein Rauschunterdrückungshohlraum ist unter dem Lufteinlass des Kanals angebracht, wobei der Hohlraum einen Einlass aufweist, der unterhalb angeordnet ist und vorzugsweise konzentrisch mit dem Lufteinlass des Kanals ausgebildet ist.The publication GB 2 502 103 A discloses a fan for generating an airflow comprising a body having an air inlet and a nozzle connected to the body. The nozzle has an inner passage and an air outlet from which the air flow is discharged from the fan. The inner passage extends through an aperture or bore through which air is drawn from outside the nozzle and blown out through the air outlet.
The body has a channel with a first end defining an air inlet and a second end opposite the first end with an air outlet. An impeller for drawing air through the duct and a motor for driving the impeller are mounted within the duct. A noise suppression cavity is mounted below the air inlet of the channel, the cavity having an inlet disposed below and preferably formed concentric with the air inlet of the channel.

Die Druckschrift EP 2 503 159 A2 offenbart ein Axialgebläse mit einer beweglichen Leitschaufel zum Erzeugen eines Luftstrom durch Rotation, wobei die Leitschaufel und ein Adapter lösbar an dem Gehäuse angebracht sind. Der Adapter weist ein Passteil zur Anbringung an der inneren Oberfläche des Gehäuses auf. Der Adapter bildet einen Vorsprung oder Stufe auf der inneren Oberfläche des Gehäuses.The publication EP 2 503 159 A2 discloses an axial fan with a movable vane for generating an airflow by rotation, wherein the vane and an adapter are releasably attached to the housing. The adapter has a fitting for attachment to the inner surface of the housing. The adapter forms a projection or step on the inner surface of the housing.

Die Druckschrift JP 2007 218150 A offenbart eine Vorrichtung mit einem Gehäuse mit einem zylindrischen Luft-kanalteil in einem Körperteil oder dergleichen und einem Rotor, der in dem Luftkanal vorgesehen und mit einer Vielzahl von Schaufeln versehen ist. Das Gehäuse mit dem Körperteil umgibt einen Rotor mit einer durchgehenden Fläche und einem Turbulenzverhinderungselement, das sich von dem Körperteil zu einem Teil in einem Lufteinlasskanalseite des Rotors erstreckt. Das Turbulenzverhinderungselement enthält Poren, durch die Luft zwischen der Luftkanalseite und einer Außenseite des Turbulenzverhinderungselements zirkuliert.The publication JP 2007 218150 A discloses a device having a housing with a cylindrical air duct part in a body part or the like and a rotor provided in the air duct and provided with a plurality of vanes. The housing with the body part surrounds a rotor having a continuous surface and a turbulence prevention member extending from the body part to a part in an air inlet passage side of the rotor. The turbulence preventing member includes pores through which air circulates between the air passage side and an outside of the turbulence prevention member.

Aufgabe der Erfindung ist es, eine Lüfterbaueinheit mit minimierter Geräuschentwicklung anzugeben, wobei das Außenmaß der Lüfterbaueinheit minimiert ist.
Erfindungsgemäß wird diese Aufgabe durch eine Lüfterbaueinheit mit den Merkmalen des unabhängigen Anspruches 1 gelöst. Vorteilhafte Weiterbildungen der Lüfterbaueinheit ergeben sich aus den Unteransprüchen 2 bis 6. Erfindungsgemäß weist die Lüfterbaueinheit ein mit einer Einlassöffnung und einer Ausströmöffnung versehenes Gehäuse auf. In dem Gehäuse ist ein Lüfter aufgenommen, wobei der Lüfter ein Axial- oder Radiallüfter sein kann. In jedem Fall fördert der Lüfter die Luft zumindest in axialer Richtung. Das Gehäuse ist senkrecht zur Mittelachse des Lüfters in mindestens zwei miteinander verbundene Gehäuseteile, nämlich das Motorhalterungsteil und das Lufteinlassteil, geteilt. Das Gehäuse bildet eine Laufkammer, in der die Flügel des Lüfters drehbar um die Achse des Lüfters aufgenommen sind. Weiterhin weist das Gehäuse einen umlaufenden sich radial erstreckenden Rand auf, in dessen Bereich das Gehäuse eine in Achsrichtung des Lüfters liegende Dicke B aufweist. Das Motorhalterungsteilweist ein Achsrichtung des Lüfters liegende Dicke B aufweist. Das Motorhalterungsteilweist ein Maß R als maximale Ausdehnung im Randbereich in Achsrichtung des Lüfters auf. Weiterhin weist die Laufkammer eine Ausdehnung in Achsrichtung des Lüfters in Höhe des Maßes L auf, während die Ausdehnung des Lufteinlassteils in Achsrichtung des Lüfters im Bereich der Laufkammer ein Maß T aufweist. Durch die Wahl eines Verhältnisses von Maß B zu Maß R zu dem Verhältnis der Maße L zu T im Bereich von 0,9 bis 1,2 wird die Geräuschemission des Lüfters im Betrieb minimiert. Dadurch brauchen keine nachträglichen Maßnahmen getroffen zu werden, um die entstandene Geräuschemission zu dämpfen. Schalldämmschichten, die die Baugröße der Lüfterbaueinheit vergrößern würden, sind nicht erforderlich, wodurch das Außenmaß der Lüfterbaueinheit minimiert ist.The object of the invention is to provide a fan assembly with minimized noise, wherein the external dimension of the fan assembly is minimized.
According to the invention this object is achieved by a fan assembly with the features of independent claim 1. Advantageous developments of the fan assembly result from the subclaims 2 to 6. According to the invention, the fan assembly has a housing provided with an inlet opening and an outlet opening. In the housing, a fan is accommodated, wherein the fan may be an axial or radial fan. In any case, the fan promotes the air at least in the axial direction. The housing is divided perpendicular to the central axis of the fan into at least two interconnected housing parts, namely the motor mounting part and the air inlet part. The housing forms a running chamber in which the blades of the fan are rotatably received about the axis of the fan. Furthermore, the housing has a circumferential, radially extending edge, in the region of which the housing has a thickness B lying in the axial direction of the fan. The engine mount part has a Axial direction of the fan lying thickness B has. The motor mount part has a dimension R as the maximum extension in the edge area in the axial direction of the fan. Furthermore, the running chamber has an extent in the axial direction of the fan in the amount of the dimension L, while the extension of the air inlet part in the axial direction of the fan in the region of the running chamber has a dimension T. By choosing a ratio of dimension B to dimension R to the ratio of dimensions L to T in the range of 0.9 to 1.2, the noise emission of the fan during operation is minimized. As a result, no subsequent measures need to be taken to dampen the resulting noise emission. Acoustic layers that would increase the size of the fan assembly are not required, thereby minimizing the external dimension of the fan assembly.

Es hat sich als vorteilhaft erwiesen, wenn der Durchmesser der Laufkammer ungefähr 1,04 mal so groß ist wie der Außendurchmesser des Lüfterrads. Dadurch entsteht ein Spalt zwischen dem Außendurchmesser des Lüfterrads und dem Duchmesser der Laufkammer von ungefähr 2% des Außendurchmessers des Lüfterrads, wodurch die Geräuschemission des Lüfters im Betrieb weiter minimiert wird.It has proved to be advantageous if the diameter of the running chamber is about 1.04 times the outer diameter of the fan wheel. This creates a gap between the outside diameter of the impeller and the diameter of the barrel chamber of about 2% of the outside diameter of the fan, further minimizing the noise emission of the fan during operation.

In einer vorteilhaften Ausführungsform weist das Gehäuse in der Draufsicht eine im Wesentlichen rechteckige Außenkontur auf. Dadurch können erfindungsgemäße Lüfterbaueinheiten kassettenartig zu einer Luftbehandlungsvorrichtung angeordnet werden, so dass mehrere Lüfterbaueinheiten mit rechteckigen Außenkonturen in Form einer Luftbehandlungsvorrichtung angeordnet werden können. Die rechteckige Außenkontur ermöglicht dabei, die Lüfterbaueinheiten in radialer Richtung möglichst dicht zueinander anzuordnen und somit die Packungsdichte der Lüfterbaueinheiten zu erhöhen.In an advantageous embodiment, the housing has a substantially rectangular outer contour in plan view. As a result, fan assemblies according to the invention can be arranged in the manner of a cassette to form an air treatment device, so that a plurality of fan assemblies with rectangular outer contours can be arranged in the form of an air treatment device. The rectangular outer contour makes it possible to arrange the fan units in the radial direction as close as possible to each other and thus to increase the packing density of the fan units.

Es hat sich als vorteilhaft erwiesen, dass das Motorenhalterungsteil ein Eintauchmaß E aufweist und das Lufteinlassteil ebenfalls das Eintauchmaß E aufweist, wobei die Eintauchtiefe a als Verhältnis des Eintauchmaßes E zu der maximalen axialen Ausdehnung C des Gehäuses in Achsrichtung des Lüfters im Bereich von 0,2 bis 0,35 liegt. Es gilt also E = a * C, wobei 0,2 ≤ a ≤ 0,35 ist.It has proved to be advantageous for the motor mounting part to have an immersion dimension E and the air inlet part likewise to have the immersion dimension E, the immersion depth a being the ratio of the immersion dimension E to the maximum axial extent C of the housing in the axial direction of the ventilator in the range of 0.2 to 0.35 is. Thus, E = a * C, where 0.2 ≤ a ≤ 0.35.

Weiterhin hat es sich als vorteilhaft erwiesen, dass das Verhältnis von maximaler äußerer Abmessung K des Gehäuses zu dem Laufraddurchmesser D maximal 1,15 beträgt. Dabei bezeichnet K bei einer kreisrunden Außengeometrie des Gehäuses den Außendurchmesser. Bei einer rechteckigen, insbesondere einer im Wesentlichen quadratischen Außenkontur des Gehäuses bezeichnet K das Kantenmaß der längsten Gehäuseseite.Furthermore, it has proved to be advantageous that the ratio of maximum outer dimension K of the housing to the impeller diameter D is 1.15 at most. In this case, K denotes the outer diameter in the case of a circular outer geometry of the housing. In a rectangular, in particular a substantially square outer contour of the housing K denotes the edge dimension of the longest side of the housing.

In einer weiteren vorteilhaften Ausführungsform weist das Gehäuse einen umlaufenden Wandring auf, wobei der Wandring eine umlaufende Holhlkammer aufweist, im Folgenden auch als Hohlkammerring bezeichnet. Der Wandring wird durch den Randbereich des Lufteinlassteils und/oder des Motorhalterungsteils gebildet. Durch die Ausführung als Hohlkammerring ist einerseits eine hohe mechanische Stabilität der Lüfterbaueinheit gegeben, während andererseits die Geräuschemission im Betrieb weiter minimiert ist.In a further advantageous embodiment, the housing has a peripheral wall ring, wherein the wall ring has a circumferential Holhlkammer, hereinafter also referred to as a hollow chamber ring. The wall ring is formed by the edge region of the air inlet part and / or the motor mounting part. Due to the design as a hollow chamber ring on the one hand a high mechanical stability of the fan assembly is given, while on the other hand, the noise emission during operation is further minimized.

Weitere Vorteile, Besonderheiten und zweckmäßige Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Darstellung eines bevorzugten Ausführungsbeispiels anhand der Abbildung.Further advantages, features and advantageous developments of the invention will become apparent from the dependent claims and the following description of a preferred embodiment with reference to the figure.

Von den Abbildungen zeigt:

Fig. 1
eine erfinderische Lüfterbaueinheit im Schnitt
From the pictures shows:
Fig. 1
an inventive fan assembly in section

Fig. 1 zeigt einen Schnitt durch eine erfindungsgemäße Lüfterbaueinheit. Die Lüfterbaueinheit 100 weist ein mit einer Einlassöffnung 131 und einer Ausströmöffnung 121 versehenes Gehäuse 110 auf. Das Gehäuse 110 ist als Gehäuse mit im Wesentlichen quadratischer Außenkontur ausgeführt. In dem Gehäuse 110 ist ein Axiallüfter 150 aufgenommen, der die Luft zumindest in axialer Richtung fördert. Das Gehäuse 110 ist zweiteilig ausgeführt, wobei es eine Teilungsebene im Wesentlichen senkrecht zur Achse X-X des Lüfters 150 aufweist. Die zwei miteinander verbundenen Gehäuseteile sind einerseits das Motorhalterungsteil 120 und andererseits das Lufteinlassteil 130. Das Gehäuse 110 bildet in seiner Mitte eine Laufkammer 111, in der die Flügel 151 des Axiallüfters 150 um die Achse X-X des Axiallüfters 150 rotieren können. Weiterhin bildet das Gehäuse 110 einen umlaufenden Randbereich 122, 132, in dessen Bereich das Gehäuse 110 eine in Achsrichtung X-X des Axiallüfters 150 liegende Dicke B aufweist. Das Motorhalterungsteil 120 weist ein Maß R als maximale Ausdehnung im Randbereich 122 in Achsrichtung X-X des Axiallüfters 150 auf. Weiterhin weist die Laufkammer 111 eine Ausdehnung in Achsrichtung X-X des Axiallüfters 150 in Höhe des Maßes L auf, während die Ausdehnung des Lufteinlassteils 130 in Achsrichtung X-X des Axiallüfters 150 im Bereich der Laufkammer 111 ein Maß T aufweist. Das Verhältnis von Maß B zu Maß R steht zu dem Verhältnis der Maße L zu T im Bereich von 0,9 bis 1,2. Damit gilt B/R = b * L/T mit 0,9 ≤ b ≤ 1,2. Durch dieses Geometrieverhältnis werden die Geräuschemissionen des Axiallüfters 150 minimiert, so dass keine bereits entstandenen Schallemissionen gedämpft werden müssen, um ein leises Laufgeräusch zu erzielen. Durch den Verzicht auf Dämmmaßnahmen kann die Baugröße der Lüfterbaueinheit 100 minimiert werden. Weiterhin liegt gegenüber bekannten Bauformen eine Materialeinsparung und eine Reduktion des Montageaufwands vor, ohne dass ein lautes Betriebsgeräusch in Kauf genommen werden muss. Durch die im Wesentlichen quadratische Außenkontur des Gehäuses 110 können mehrere Lüfterbaueinheiten 100 mit maximaler Packungsdichte kassettenförmig nebeneinander verbaut werden. Durch den Verzicht auf Dämmmaßnahmen im Inneren der Lüfterbaueinheit 100 kann der Durchmesser D des Lüfterrades im Verhältnis zu dem Außenmaß K des Gehäuses 110 maximiert werden, wodurch die Lüfterleistung im Verhältnis zur benötigten Fläche der Lüfterbaueinheit ebenfalls maximiert ist. Im vorliegenden Ausführungsbeispiel beträgt diese Verhältnis 1,15. Fig. 1 shows a section through a fan assembly according to the invention. The fan assembly 100 has a housing 110 provided with an inlet port 131 and an exhaust port 121. The housing 110 is designed as a housing with a substantially square outer contour. In the housing 110, an axial fan 150 is received, which promotes the air at least in the axial direction. The housing 110 is designed in two parts, wherein it has a dividing plane substantially perpendicular to the axis XX of the fan 150. The two interconnected housing parts are the one hand The motor housing part 120 and on the other hand, the air inlet part 130. The housing 110 forms in its center a running chamber 111 in which the wings 151 of the axial fan 150 can rotate about the axis XX of the axial fan 150. Furthermore, the housing 110 forms a circumferential edge region 122, 132, in the region of which the housing 110 has a thickness B lying in the axial direction XX of the axial fan 150. The motor mounting part 120 has a dimension R as the maximum extent in the edge region 122 in the axial direction XX of the axial fan 150. Furthermore, the running chamber 111 has an extent in the axial direction XX of the axial fan 150 in the amount of the dimension L, while the extension of the air inlet part 130 in the axial direction XX of the axial fan 150 in the running chamber 111 has a dimension T. The ratio of measure B to measure R is the ratio of measures L to T in the range of 0.9 to 1.2. Thus, B / R = b * L / T with 0.9 ≤ b ≤ 1.2. This geometry ratio minimizes the noise emissions of the axial fan 150, so that no existing noise emissions must be damped to achieve a quiet running noise. By dispensing with insulation measures, the size of the fan assembly 100 can be minimized. Furthermore, compared to known types of construction material savings and a reduction of the assembly effort, without a loud operating noise must be taken into account. By virtue of the substantially square outer contour of the housing 110, a plurality of fan assembly units 100 with maximum packing density can be installed next to one another in the form of a cassette. By dispensing with insulation measures inside the fan assembly 100, the diameter D of the fan wheel can be maximized in relation to the outer dimension K of the housing 110, whereby the fan power is also maximized in relation to the required area of the fan assembly. In the present embodiment, this ratio is 1.15.

Der Durchmesser DK der Laufkammer 111 ist 4% größer wie der Außendurchmesser Ddes Lüfterrads. Dadurch entsteht ein Spalt zwischen dem Außendurchmesser des Lüfterrads und dem Duchmesser der Laufkammer DK von ungefähr 2% des Außendurchmessers des Lüfterrads, wodurch die Geräuschemission des Lüfters 150 im Betrieb weiter minimiert wird.The diameter D K of the running chamber 111 is 4% larger than the outside diameter D of the fan wheel. This creates a gap between the outer diameter of the fan and the diameter of the running chamber D K of about 2% of the outer diameter of the fan, whereby the noise emission of the fan 150 is further minimized in operation.

Das Motorhalterungsteil 120, als auch das Lufteinlassteil 130 weisen ein Eintauchmaß E auf, wobei die Eintauchtiefe a als Verhältnis des Eintauchmaßes E zu der maximalen axialen Ausdehnung C des Gehäuses 110 in Achsrichtung X-X des Lüfters 150 einen Wert von 0,27 aufweist, das heißt also a = 0,27.The motor mounting part 120, as well as the air inlet part 130 have a Eintauchmaß E, wherein the immersion depth a as the ratio of the Eintauchmaßes E to the maximum axial extent C of the housing 110 in the axial direction XX of the fan 150 has a value of 0.27, that is so a = 0.27.

Das Gehäuse 110 weist einen umlaufenden Wandring mit einer quadratischen Außenkontur auf, wobei der Wandring eine umlaufende Holhlkammer 115 aufweist. Durch die Ausführung als Hohlkammerring ist einerseits eine hohe mechanische Stabilität der Lüfterbaueinheit 100 gegen Verbiegung und Verwindung gegeben, während andererseits die Geräuschemission im Betrieb weiter minimiert ist.The housing 110 has a circumferential wall ring with a square outer contour, wherein the wall ring has a circumferential Holhlkammer 115. Due to the design as a hollow chamber ring on the one hand a high mechanical stability of the fan assembly 100 is given against bending and twisting, while on the other hand, the noise emission during operation is further minimized.

Die hier gezeigte Ausführungsform stellt nur ein Beispiel für die vorliegende Erfindung dar und darf daher nicht einschränkend verstanden werden. Alternative durch den Fachmann in Erwägung gezogene Ausführungsformen sind gleichermaßen vom Schutzbereich der vorliegenden Erfindung umfasst.The embodiment shown here is only an example of the present invention and should not be understood as limiting. Alternative embodiments contemplated by one skilled in the art are equally within the scope of the present invention.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

100100
LüfterbaueinheitLüfterbaueinheit
110110
Gehäusecasing
111111
Laufkammeroverflow chamber
114114
Wandringwall ring
115115
Hohlkammerhollow
120120
MotorhalterungsteilMotor mounting part
121121
Ausströmöffnungoutflow
122122
Randbereichborder area
130130
LufteinlassteilAir intake part
131131
Einlassöffnunginlet port
132132
Randbereichborder area
150150
LüfterFan
151151
Flügelwing
BB
Dickethickness
CC
maximalen axialen Ausdehnung des Gehäusesmaximum axial extent of the housing
DD
Außendurchmesser des LüfterradesOuter diameter of the fan wheel
DK D K
Durchmesser der LaufkammerDiameter of the barrel chamber
Ee
Eintauchmaßof immersion
LL
Laufkammerausdehnung in Achsrichtung (X-X) des LüftersRunning chamber expansion in the axial direction (X-X) of the fan
RR
maximale Ausdehnung des Motorhalterungsteils im Randbereich in Achsrichtung (X-X) des Lüftersmaximum extension of the motor mounting part in the edge area in the axial direction (X-X) of the fan
TT
Ausdehnung des Lufteinlassteils in Achsrichtung (X-X) des Lüfters im Bereich der LaufkammerExpansion of the air inlet part in the axial direction (X-X) of the fan in the area of the running chamber

Claims (6)

  1. A modular fan unit (100), having a housing (110) that has been provided with an inlet opening (131) and an outflow opening (121) and a fan (150) that is accommodated in the housing (110) and that conveys the air at least in the axial direction, whereby the housing (110) is divided perpendicularly to the axis (X-X) of the fan (150) into at least two housing halves that are joined to each other, namely, a motor holding part (120) and an air inlet part (130), and whereby the housing (110) forms a chamber (111) in which the blades (151) of the axial fan (150) are accommodated so as to rotate around the axis (X-X) of the fan (150), and the housing also has a circumferential edge area (122, 132) in the vicinity of which the housing (110) has a thickness B extending in the axis direction (X-X) of the axial fan (150), and the motor holding part (120) has a dimension R as the maximum extension in the edge area (122) in the axis direction (X-X) of the fan (150), and moreover, the chamber (111) has an extension in the axis direction (X-X) of the fan (150) at the height of the dimension L, and the extension of the air inlet part (130) in the axis direction (X-X) of the fan (150) has a dimension T in the area of the chamber (111),
    characterized in that
    the ratio of the dimension B to the dimension R with respect to the ratio of the dimension L to the dimension T is within the range from 0.9 to 1.2.
  2. The modular fan unit (100) according to claim 1,
    characterized in that
    the diameter DK of the chamber is approximately 4% larger than the outer diameter D of the fan runner.
  3. The modular fan unit (100) according to one of the preceding claims,
    characterized in that
    the motor holding part (120) and the air inlet part (130) each have a set-back dimension E, whereby the ratio of the set-back dimension E to the maximum axial extension C of the housing in the axis direction (X-X) of the fan (150) is within the range from 0.2 to 0.35.
  4. The modular fan unit (100) according to one of the preceding claims,
    characterized in that
    the ratio of the maximum outer dimension K of the housing (110) to the impeller diameter D is 1.15 at the maximum.
  5. The modular fan unit (100) according to one of the preceding claims,
    characterized in that
    the housing (110) has a circumferential wall ring (114), whereby the wall ring (114) has a circumferential hollow chamber (115).
  6. The modular fan unit according to one of the preceding claims,
    characterized in that
    the circumferential hollow chamber (115) is formed in the edge area (132) of the air inlet part (130) and/or in the edge area (122) of the motor holding part (120).
EP14187394.3A 2013-11-25 2014-10-02 Ventilator unit Active EP2876305B1 (en)

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DE102013223983.1A DE102013223983A1 (en) 2013-11-25 2013-11-25 Lüfterbaueinheit

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DE (2) DE202013011919U1 (en)

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Publication number Publication date
CN204493224U (en) 2015-07-22
EP2876305A1 (en) 2015-05-27
US20150147170A1 (en) 2015-05-28
CN104728134A (en) 2015-06-24
DE102013223983A1 (en) 2015-05-28
US9816513B2 (en) 2017-11-14
DE202013011919U1 (en) 2015-03-05

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