EP1438512B1 - Device for application in a fan arrangement - Google Patents

Device for application in a fan arrangement Download PDF

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Publication number
EP1438512B1
EP1438512B1 EP02772345A EP02772345A EP1438512B1 EP 1438512 B1 EP1438512 B1 EP 1438512B1 EP 02772345 A EP02772345 A EP 02772345A EP 02772345 A EP02772345 A EP 02772345A EP 1438512 B1 EP1438512 B1 EP 1438512B1
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EP
European Patent Office
Prior art keywords
seal according
approximately
fan
sealing ring
housing
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
EP02772345A
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German (de)
French (fr)
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EP1438512A1 (en
Inventor
Thomas Seith
Diethard Görig
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.)
BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Publication of EP1438512A1 publication Critical patent/EP1438512A1/en
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Publication of EP1438512B1 publication Critical patent/EP1438512B1/en
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    • 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
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
    • F04D29/162—Sealings between pressure and suction sides especially adapted for elastic fluid pumps of a centrifugal flow wheel

Definitions

  • the present invention relates to a seal for use in a blower assembly, in particular for use in a blower arrangement for a domestic appliance and a blower arrangement.
  • blower arrangements with an electric motor and a non-rotatably connected to a motor output shaft centrifugal impeller are known.
  • the centrifugal impeller is u.a. surrounded by a fan housing to form a directed air flow, which widens in a truncated cone from an inflow opening to the motor drive.
  • a seal for substantially filling an air gap between the Zentrifugalgebläserad and the inside of the fan housing is arranged to reduce
  • a seal according to the invention therefore provides that the seal is designed as a sealing ring and the sealing ring is connected out of the blower housing with a buffer member which sealingly surrounds the inflow opening.
  • a sealing ring is thus further arranged in the region of an inlet opening of the fan arrangement, which serves for sealing an air gap between a centrifugal fan wheel and an inner side of a fan housing.
  • this sealing ring is now formed extending out of the blower housing and connected to a buffer member which encloses the inflow opening as a bearing element. It is therefore according to the invention only a part available, which is limited to the region of the inlet opening of the fan assembly.
  • an outer contour of the buffer part of an inner contour of a sealed housing opening is adapted.
  • the buffer part also fulfills the tasks of fixing and sealing the fan assembly in a predetermined opening in addition to the task of a one-sided mounting of the fan assembly.
  • the material of the sealing ring is suitably formed in a mounting position on the blower housing for grinding by a centrifugal impeller.
  • a centrifugal impeller for details of grinding at this point, reference is made to the disclosure of DE 19717 154.
  • the material of the buffer part is elastic. So it is well suited for the above-mentioned tasks of storage, fixation and sealing.
  • the buffer member must not be applied in this form as a sealant that cures only on site on the blower housing.
  • the buffer part is tapered conically outside the inlet opening.
  • the insertion of the fan assembly is facilitated in a recording.
  • the sealing ring and the buffer member are formed as a one-piece body and also einstoffig. This significantly reduces manufacturing and assembly costs. Also simplifies installation, as will be described below with reference to an embodiment with reference to the drawings. Accordingly, the one-piece combination of sealing ring and buffer member is hereinafter referred to only as a seal body.
  • the material of the sealing body preferably has a hardness of about 40 to about 50 Shore. Furthermore, it has a strength of about 10 to about 20 N / mm 2 and / or an elasticity of about 40 to about 60% and preferably allows an elongation of about 150 to about 300%.
  • the material of the sealing body should be selected such that the values mentioned above remain maintained even after aging under the operating conditions in a floor care appliance with continuous vibration load and elevated temperatures.
  • the buffer part is provided with at least one recess for setting an elasticity deviating from the sealing ring.
  • These recesses are preferably provided in the form of approximately equidistant blind holes in the buffer member.
  • a seal according to the invention makes it easier to accommodate a fan assembly even in the cramped environment and the difficult installation conditions in the interior of a floor care appliance.
  • a new seal is created between the blower housing or a blower hood and the centrifugal blower wheel with an optimization of the blower power data, in particular by reducing the losses occurring.
  • the invention explained below with reference to an embodiment is particularly characterized by the fact that no separate components are required for the inner and outer sealing.
  • an individually adjustable compensation in the production of always occurring tolerances between fixed and rotating fan parts is created.
  • the storage and simultaneous fixation of a seal according to the invention by the buffer member also achieves a significant noise reduction. In this case, a choice of material in a wide range of parameters is possible, in particular the proposed design measures allow a largely independent adjustment of the spring stiffness of the sealing ring and the buffer member.
  • FIG. 1 is a sectional view taken along a longitudinal axis of a vacuum cleaner housing SG using a seal 1 according to the invention.
  • the vacuum cleaner housing SG is subdivided into an aspirated airflow L into a dust chamber SK, which is separated from a motor space MR by a partition wall TW with one or more filters F.
  • a Dunleittrichter LT is provided as a space-saving and flow-optimized adaptation of the air flow L for transfer into a blower G.
  • FIG. 2 In the enlarged detail of Figure 2, an area around a motor M in the engine compartment MR is shown. Arrows P1 and P2 identify two bearing points of the motor M in the engine compartment MR or in the air guide funnel LT of the partition wall TW and an opposite rear wall of the engine compartment MR. Here, on average, the shape of a seal according to the invention or of a sealing body 1 can also be seen, which serves as one of the two bearing points.
  • the sealing body 1 is arranged in the region of an inflow opening E by clamping on an edge region of a blower housing GG.
  • the seal body 1 forms a sealing ring 2 in the inflow opening E.
  • the seal body 1 then extends out of the inflow opening E and encloses the inflow opening E radially to form a buffer part 3.
  • the seal body 1 is closed to the dust chamber and adapted to an outer circumference U an inner diameter in the connection region of the Lucasleittrichters LT adapted ,
  • the blower with the engine M fixedly mounted thereon is sealingly arranged with the air guide funnel LT and thus on the partition wall TW to the dust space SR.
  • the seal body 1 shown in the figures of the drawing serves at the same time as a sealing ring 2 or as a seal between the blower housing GG and the centrifugal fan LR and also as a sealing mounting of the blower housing GG to the partition TW.
  • the buffer part 3 is used to compensate for tolerances and also reduces the noise that occurs during operation. In addition, vibrations and an oscillation tendency of the arrangement of blower G and motor M are reduced by a vote of a spring stiffness of the material in the region of the buffer part 3.
  • FIGS. 3 to 5 The structural measures taken to adjust and tune the spring stiffness of the buffer part 3 are shown in detail in FIGS. 3 to 5.
  • a radially extending recess 4 is provided for receiving the edge region of the blower housing GG at the inflow opening E.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Constitution Of High-Frequency Heating (AREA)

Abstract

A device for application in a fan configuration is configured, in particular, to be directly driven by an electric motor. In the fan configuration, a centrifugal fan wheel is mounted to rotate in unison with a drive shaft. The centrifugal fan wheel, for producing a directed airflow, is surrounded by a fan housing. A seal is disposed in an admission orifice, for largely filling in an air gap between the centrifugal fan wheel and the inner surface of the fan housing. Such a configuration improves the housing and sealing thereof for an application in a vacuum cleaner by having the sealing device be embodied as a sealing ring linked to a buffer part out of the fan housing, which part tightly surrounds the admission orifice.

Description

Die vorliegende Erfindung betrifft eine Dichtung zum Einsatz in einer Gebläseanordnung, insbesondere zum Einsatz in einer Gebläseanordnung für ein Haushaltgerät sowie eine Gebläseanordnung.The present invention relates to a seal for use in a blower assembly, in particular for use in a blower arrangement for a domestic appliance and a blower arrangement.

Unter den Begriff des Haushaltgerätes fallen u.a. Bodenpflegegeräte und Dunstabzugshauben. In den vorstehend beispielhaft genannten Haushaltgeräten werden Gebläseanordnungen eingesetzt, die über einen weiten Bereich einer jeweiligen Förderleistung einstellbar sind.Under the term of the household appliance, u.a. Floor care appliances and extractor hoods. In the household appliances mentioned above by way of example blower arrangements are used which are adjustable over a wide range of a respective delivery rate.

Aus der DE-21 09 409 A und der DE 197 17 154 sind Gebläseanordnungen mit einem Elektromotor und einem drehfest mit einer Motorabtriebswelle verbundenen Zentrifugalgebläserad bekannt. Bei derartigen Gebläseanordnungen ist das Zentrifugalgebläserad u.a. zur Ausbildung eines gerichteten Luftstroms von einem Gebläsegehäuse umgeben, das sich von einer Einströmöffnung her zu dem motorischen Antrieb kegelstumpfartig weitet. In der Einströmöffnung ist zur Verminderung von Rückströmverlusten und damit verbundener Leistungseinbußen der Gebläseanordnung eine Dichtung zum weitgehenden Ausfüllen eines Luftspaltes zwischen dem Zentrifugalgebläserad und der Innenseite des Gebläsegehäuses angeordnet.From DE-21 09 409 A and DE 197 17 154 blower arrangements with an electric motor and a non-rotatably connected to a motor output shaft centrifugal impeller are known. In such blower arrangements, the centrifugal impeller is u.a. surrounded by a fan housing to form a directed air flow, which widens in a truncated cone from an inflow opening to the motor drive. In the inflow opening a seal for substantially filling an air gap between the Zentrifugalgebläserad and the inside of the fan housing is arranged to reduce Rückströmverlusten and associated power losses of the fan assembly.

Aus einem weiteren Stand der Technik gemäß DE 198 55 905 A1 ist bekannt, im Bereich der Einlassöffnung an der Gehäuseklappe ein Dichtelement vorzusehen, das derart an der radial inneren Umfangskante der Deckscheide anliegt, dass es sich einschleift.From a further prior art according to DE 198 55 905 A1 it is known to provide a sealing element in the region of the inlet opening on the housing flap, which abuts against the radially inner peripheral edge of the covering sheath such that it grinds in.

Bei einem Einbau einer derartigen Gebläseanordnung insbesondere in einem Bodenpflegegerät, wie beispielsweise einem Staubsauger, mit einer hohen Lüftförderleistung und einer möglichst hohen Saugkraft treten dennoch weitere Dichtigkeitsprobleme auf. Diesen Problemen kann derzeit nur durch recht umständliche Befestigungs-, Fixierungs- und Abdichtungsmaßnahmen begegnet werden. Hierzu sind viele-Einzelteile erforderlich, die in einem arbeitszeitaufwendigen Fertigungsprozeß montiert werden müssen.When installing such a blower arrangement, in particular in a floor care appliance, such as a vacuum cleaner, with a high Lüftförderleistung and the highest possible suction force nevertheless occur further leakage problems. At present, these problems can only be counteracted by quite cumbersome fastening, fixing and sealing measures. This requires many items that need to be assembled in a labor-intensive manufacturing process.

Schließlich sei noch auf die EP 1 048 261 A hingewiesen.Finally, attention should be drawn to EP 1 048 261 A.

Es ist Aufgabe der vorliegenden Erfindung, eine Dichtung der genannten Art unter Verbesserung ihrer Aufnahme und Abdichtung gerade für einen Einsatz in einem Staubsauger weiterzubilden.It is an object of the present invention to develop a seal of the type mentioned while improving their recording and sealing just for use in a vacuum cleaner.

Diese Aufgabe wird erfindungsgemäß durch eine Dichtung mit den Merkmalen von Anspruch 1 und eine dementsprechend ausgerüstete Gebläseanordnung nach Anspruch 14 gelöst.This object is achieved by a seal with the features of claim 1 and a correspondingly equipped fan assembly according to claim 14.

Eine erfindungsgemäße Dichtung sieht demnach vor, daß die Dichtung als Dichtring ausgebildet ist und der Dichtring aus dem Gebläsegehäuse heraus mit einem Pufferteil verbunden ist, das die Einströmöffnung abdichtend umgibt. Damit ist einerseits weiterhin ein Dichtring im Bereich einer Einströmöffnung der Gebläseanordnung angeordnet, der zur Abdichtung eines Luftspaltes zwischen einem Zentrifugalgebläserad und einer Innenseite eines Gebläsegehäuses dient. Dieser Dichtring ist nun jedoch aus dem Gebläsegehäuse heraus erstreckend ausgebildet und mit einem Pufferteil verbunden, das die Einströmöffnung als Lagerelement umschließt. Es ist damit erfindungsgemäß nur noch ein Teil vorhanden, das auf den Bereich der Einströmöffnung der Gebläseanordnung beschränkt ist.A seal according to the invention therefore provides that the seal is designed as a sealing ring and the sealing ring is connected out of the blower housing with a buffer member which sealingly surrounds the inflow opening. On the one hand, a sealing ring is thus further arranged in the region of an inlet opening of the fan arrangement, which serves for sealing an air gap between a centrifugal fan wheel and an inner side of a fan housing. However, this sealing ring is now formed extending out of the blower housing and connected to a buffer member which encloses the inflow opening as a bearing element. It is therefore according to the invention only a part available, which is limited to the region of the inlet opening of the fan assembly.

In einer Weiterbildung der Erfindung ist eine Außenkontur des Pufferteils einer Innenkontur einer abzudichtenden Gehäuse Öffnung angepaßt. Damit erfüllt das Pufferteil neben der Aufgabe einer einseitigen Lagerung der Gebläseanordnung auch die Aufgaben der Fixierung und der Abdichtung der Gebläseanordnung in einer vorgegebenen Öffnung.In one embodiment of the invention, an outer contour of the buffer part of an inner contour of a sealed housing opening is adapted. Thus, the buffer part also fulfills the tasks of fixing and sealing the fan assembly in a predetermined opening in addition to the task of a one-sided mounting of the fan assembly.

Das Material des Dichtrings ist in einer Einbaulage an dem Gebläsegehäuse zum Einschleifen durch ein Zentrifugalgebläserad geeignet ausgebildet. Auf Einzelheiten des Einschleifens wird an dieser Stelle auf die Offenbarung der DE 19717 154 verwiesen.The material of the sealing ring is suitably formed in a mounting position on the blower housing for grinding by a centrifugal impeller. For details of grinding at this point, reference is made to the disclosure of DE 19717 154.

Das Material des Pufferteils ist elastisch. So ist es für die vorstehend genannten Aufgaben der Lagerung, Fixierung und Abdichtung gut geeignet. Insbesondere muß der Pufferteil in dieser Form nicht als Dichtungsmasse aufgetragen werden, die erst vor Ort an dem Gebläsegehäuse aushärtet.The material of the buffer part is elastic. So it is well suited for the above-mentioned tasks of storage, fixation and sealing. In particular, the buffer member must not be applied in this form as a sealant that cures only on site on the blower housing.

Vorteilhafterweise ist der Pufferteil außerhalb der Einströmöffnung konisch verjüngt ausgebildet. So ist das Einführen der Gebläseanordnung in eine Aufnahme erleichtert.Advantageously, the buffer part is tapered conically outside the inlet opening. Thus, the insertion of the fan assembly is facilitated in a recording.

In einer bevorzugten Ausbildungsform der Erfindung sind der Dichtring und der Pufferteil als einstückiger Körper und auch einstoffig ausgebildet. Damit werden Fertigungs- und Montageaufwand erheblich reduziert. Auch vereinfacht sich ein Einbau, wie nachfolgend noch anhand eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnung beschrieben wird. Dementsprechend wird die einstückige Kombination aus Dichtring und Pufferteil nachfolgend nur noch als Dichtungs Körper bezeichnet.In a preferred embodiment of the invention, the sealing ring and the buffer member are formed as a one-piece body and also einstoffig. This significantly reduces manufacturing and assembly costs. Also simplifies installation, as will be described below with reference to an embodiment with reference to the drawings. Accordingly, the one-piece combination of sealing ring and buffer member is hereinafter referred to only as a seal body.

Das Material des Dichtungs Körpers weist vorzugsweise eine Härte von ca. 40 bis ca. 50 Shore auf. Femer weist es eine Festigkeit von ca. 10 bis ca. 20 N/mm2 und/oder eine Elastizität von ca. 40 bis ca. 60% auf und läßt vorzugsweise eine Dehnung von ca. 150 bis ca. 300% zu. Das Material des Dichtungs Körpers ist insbesondere so auszuwählen, dass die vorstehend genannten Werte auch nach Alterung unter den Betriebsbedingungen in einem Bodenpflegegerät bei andauernder Schwingungsbelastung und erhöhten Temperaturen eingehalten bleiben.The material of the sealing body preferably has a hardness of about 40 to about 50 Shore. Furthermore, it has a strength of about 10 to about 20 N / mm 2 and / or an elasticity of about 40 to about 60% and preferably allows an elongation of about 150 to about 300%. In particular, the material of the sealing body should be selected such that the values mentioned above remain maintained even after aging under the operating conditions in a floor care appliance with continuous vibration load and elevated temperatures.

In einer bevorzugten Ausbildungsform der Erfindung ist der Pufferteil zur Einstellung einer von dem Dichtring abweichenden Elastizität mit mindestens einer Ausnehmung versehen. Diese Ausnehmungen sind vorzugsweise in Form ungefähr äquidistanter Sacklöcher in dem Pufferteil vorgesehen.In a preferred embodiment of the invention, the buffer part is provided with at least one recess for setting an elasticity deviating from the sealing ring. These recesses are preferably provided in the form of approximately equidistant blind holes in the buffer member.

Eine erfindungsgemäße Dichtung ermöglicht die erleichterte Aufnahme einer Gebläseanordnung auch in der beengten Umgebung und den schwierigen Einbauverhältnissen in Innenraum eines Bodenpflegegerätes. Gleichzeitig wird unter Senkung der einzelnen, an dem Einbau beteiligten Elemente eine neue Abdichtung zwischen dem Gebläsegehäuse bzw. einer Gebläsehaube und dem Zentrifugalgebläserad bei einer Optimierung der Gebläseleistungsdaten geschaffen, insbesondere unter Senkung der auftretenden Verluste. Die nachfolgend noch anhand eines Ausführungsbeispiels erläuterte Erfindung zeichnet sich besonders dadurch aus, daß zum inneren und äußeren Abdichtung keine gesonderten Bauteile benötigt werden. Gleichzeitig wird eine individuell einstellbare Kompensation in der Fertigung stets auftretender Toleranzen zwischen feststehenden und rotierenden Gebläseteilen geschaffen. Die Lagerung und gleichzeitige Fixierung einer erfindungsgemäßen Dichtung durch den Pufferteil erzielt zudem eine wesentliche Geräuschdämpfung. Dabei ist eine Materialauswahl in weiten Parameterbereich möglich, wobei insbesondere die vorgeschlagenen konstruktiven Maßnahmen eine weitgehend unabhängige Einstellung der Federsteifigkeit der Dichtrings und des Pufferteils ermöglichen.A seal according to the invention makes it easier to accommodate a fan assembly even in the cramped environment and the difficult installation conditions in the interior of a floor care appliance. At the same time, by lowering the individual elements involved in the installation, a new seal is created between the blower housing or a blower hood and the centrifugal blower wheel with an optimization of the blower power data, in particular by reducing the losses occurring. The invention explained below with reference to an embodiment is particularly characterized by the fact that no separate components are required for the inner and outer sealing. At the same time an individually adjustable compensation in the production of always occurring tolerances between fixed and rotating fan parts is created. The storage and simultaneous fixation of a seal according to the invention by the buffer member also achieves a significant noise reduction. In this case, a choice of material in a wide range of parameters is possible, in particular the proposed design measures allow a largely independent adjustment of the spring stiffness of the sealing ring and the buffer member.

Nachfolgend werden Ausführungsbeispiele der Erfindung anhand der Zeichnung mit einer ergänzenden Nennung weiterer Vorteile näher erläutert. In der Zeichnung zeigt:

Figur 1:
eine skizzierte Schnittdarstellung eines Staubsaugergehäuses entlang einer Längsachse;
Figur 2:
einen vergrößerten Ausschnitt von Figur 1;
Figur 3:
eine Schnittdarstellung des Körpers aus Dichtring und Puffer,
Figur 4:
einen vergrößerten Ausschnitt von Figur 3;
Figur 5:
eine dreidimensionale Ansicht des Körpers von Figur 3.
Embodiments of the invention will be explained in more detail with reference to the drawing with a supplementary mention of further advantages. In the drawing shows:
FIG. 1:
a sketched sectional view of a vacuum cleaner housing along a longitudinal axis;
FIG. 2:
an enlarged detail of Figure 1;
FIG. 3:
a sectional view of the body of sealing ring and buffer,
FIG. 4:
an enlarged detail of Figure 3;
FIG. 5:
a three-dimensional view of the body of Figure 3.

In der Abbildung von Figur 1 ist eine Schnittdarstellung entlang einer Längsachse eines Staubsaugergehäuses SG unter Verwendung einer erfindungsgemäßen Dichtung 1 dargestellt. Das Staubsaugergehäuse SG unterteilt sich einem eingesaugten Luftstrom L folgend in eine Staubkammer SK, die durch eine Trennwand TW mit einem oder mehreren Filtern F von einem Motorraum MR getrennt ist. In der Trennwand TW ist ein Luftleittrichter LT als platzsparende und strömungsöptimierte Anpassung der Luftstroms L zur Überleitung in ein Gebläse G vorgesehen.In the illustration of Figure 1 is a sectional view taken along a longitudinal axis of a vacuum cleaner housing SG using a seal 1 according to the invention. The vacuum cleaner housing SG is subdivided into an aspirated airflow L into a dust chamber SK, which is separated from a motor space MR by a partition wall TW with one or more filters F. In the partition TW a Luftleittrichter LT is provided as a space-saving and flow-optimized adaptation of the air flow L for transfer into a blower G.

In der Ausschnittsvergrößerung von Figur 2 ist ein Bereich um einen Motor M in dem Motorraum MR dargestellt. Durch Pfeile P1 und P2 sind zwei Lagerstellen des Motors M in dem Motorraum MR bzw. in dem Luftleittrichter LT der Trennwand TW und einer gegenüberliegenden hinteren Wand des Motorraums MR gekennzeichnet. Hier ist nun im Schnitt auch die Form einer erfindungsgemäßen Dichtung bzw. eines Dichtungs Körpers 1 zu erkennen, der als eine der beiden Lagerstellen dient.In the enlarged detail of Figure 2, an area around a motor M in the engine compartment MR is shown. Arrows P1 and P2 identify two bearing points of the motor M in the engine compartment MR or in the air guide funnel LT of the partition wall TW and an opposite rear wall of the engine compartment MR. Here, on average, the shape of a seal according to the invention or of a sealing body 1 can also be seen, which serves as one of the two bearing points.

Zur Fixierung ist der Dichtungs Körper 1 in dem Bereich einer Einströmöffnung E klemmend auf einem Randbereich eines Gebläsegehäuses GG angeordnet. In einem Grenzbereich zwischen einem Endbereich des Gebläsegehäuses GG und einem Zentrifugallüfterrades LR bildet der Dichtungs Körper 1 in der Einströmöffnung E einen Dichtring 2 aus. Durch individuelles Einschleifen des Dichtrings 2 an dem jeweiligen Zentrifugallüfterrad LR wird ein optimierter und weitgehend wirbelfreier Übergang von dem Saugbereich in ein Laufrad stattfinden. Damit wird der Wirkungsgrad des so ausgerüsteten Gebläses opitmiert.For fixing the sealing body 1 is arranged in the region of an inflow opening E by clamping on an edge region of a blower housing GG. In a boundary region between an end region of the blower housing GG and a centrifugal fan wheel LR, the seal body 1 forms a sealing ring 2 in the inflow opening E. By individually grinding the sealing ring 2 on the respective centrifugal fan LR an optimized and largely vortex-free transition from the suction area will take place in an impeller. Thus, the efficiency of the thus equipped blower is opitmiert.

Der Dichtungs Körper 1 erstreckt sich dann aus der Einströmöffnung E heraus und umschließt die Einströmöffnung E radial unter Ausbildung eines Pufferteils 3. Damit ist der Dichtungs Körper 1 zu dem Staubraum hin geschlossen und an einem äußeren Umfang U einem Innendurchmesser im Anschlußbereich des Luftleittrichters LT angepaßt ausgebildet. Damit ist das Gebläse mit dem daran fest montierten Motor M abdichtend mit dem Luftleittrichter LT und somit an der Trennwand TW zu dem Staubraum SR hin angeordnet.The seal body 1 then extends out of the inflow opening E and encloses the inflow opening E radially to form a buffer part 3. Thus, the seal body 1 is closed to the dust chamber and adapted to an outer circumference U an inner diameter in the connection region of the Luftleittrichters LT adapted , Thus, the blower with the engine M fixedly mounted thereon is sealingly arranged with the air guide funnel LT and thus on the partition wall TW to the dust space SR.

Damit dient der in den Abbildungen der Zeichnung dargestellte Dichtungs Körper 1 zugleich als Dichtring 2 bzw. als Abdichtung zwischen Gebläsegehäuse GG und dem Zentrifugallüfterrad LR und auch als abdichtende Lagerung des Gebläsegehäuses GG an der Trennwand TW. Der Pufferteil 3 dient dem Ausgleich von Toleranzen und senkt zudem die im Betrieb auftretenden Geräusche. Zudem werden Schwingungen und eine Schwingneigung der Anordnung aus Gebläse G und Motor M durch eine Abstimmung einer Federsteifigkeit des Materials im Bereich des Pufferteils 3 gemindert.Thus, the seal body 1 shown in the figures of the drawing serves at the same time as a sealing ring 2 or as a seal between the blower housing GG and the centrifugal fan LR and also as a sealing mounting of the blower housing GG to the partition TW. The buffer part 3 is used to compensate for tolerances and also reduces the noise that occurs during operation. In addition, vibrations and an oscillation tendency of the arrangement of blower G and motor M are reduced by a vote of a spring stiffness of the material in the region of the buffer part 3.

Die zur Einstellung und Abstimmung der Federsteifigkeit des Pufferteils 3 ergriffenen konstruktiven Maßnahmen werden im Detail in den Abbildungen der Figuren 3 bis 5 dargestellt. Zur Aufnahme des Randbereich des Gebläsegehäuses GG an der Einströmöffnung E ist ein radial verlaufender Einstich 4 vorgesehen. Ausnehmungen 5, hier als Sackbohrungen ausgeführt, stellen die Federsteifigkeit des Materials im Bereich des Pufferteils 3 ein.The structural measures taken to adjust and tune the spring stiffness of the buffer part 3 are shown in detail in FIGS. 3 to 5. For receiving the edge region of the blower housing GG at the inflow opening E, a radially extending recess 4 is provided. Recesses 5, designed here as blind holes, set the spring stiffness of the material in the region of the buffer part 3.

Zur Materialauswahl und sonstigen Einstellungen und Parametern wird an dieser Stelle auf die Beschreibungseinleitung verwiesen, wobei insgesamt ein gummiartiges Material bevorzugt eingesetzt wird.For material selection and other settings and parameters, reference is made at this point to the introduction to the description, wherein a rubber-like material is preferably used in total.

Claims (14)

  1. Seal for use in a fan arrangement, which is constructed particularly for direct drive by an electric motor, wherein a centrifugal fan wheel (LR) is connected in rotationally fast manner with a drive shaft in the fan arrangement, the centrifugal fan wheel (LR) is surrounded by a fan housing (GG) for, inter alia, formation of a directional air flow, and a sealing ring (2) for substantially filling an air gap between the centrifugal fan wheel and the inner side of the fan housing is arranged in an inflow opening, characterised in that the sealing ring (2) is connected, out of the fan housing (GG), with a buffer part (3) which sealingly surrounds the inflow opening (E).
  2. Seal according to claim 1, characterised in that an outer contour of the buffer part (3) is adapted to an inner contour of a housing opening to be sealed.
  3. Seal according to one or both of the preceding claims, characterised in that the sealing ring (2) consists of a material which is suitable for bedding in by the centrifugal fan wheel (LR) in an installed position at the fan housing (GG).
  4. Seal according to one or more of the preceding claims, characterised in that the material of the buffer pat (3) is resilient.
  5. Seal according to one or more of the preceding claims, characterised in that the sealing ring (2) and the buffer part (3) form an integral sealing body (1), which is of a single material.
  6. Seal according to one or more of the preceding claims, characterised in that the buffer part (3) is formed outside the inflow opening (E) to be conically tapering.
  7. Seal according to one or more of the preceding claims, characterised in that the material of the sealing body (1) has a Shore hardness of approximately 40 to approximately 50.
  8. Seal according to one or more of the preceding claims, characterised in that the material of the sealing body (1) has a strength of approximately 10 to approximately 20 N/mm2.
  9. Seal according to one or more of the preceding claims, characterised in that the material of the sealing body (1) has an elasticity of approximately 40 to approximately 60%.
  10. Seal according to one or more of the preceding claims, characterised in that the material of the sealing body (1) has a percent elongation of approximately 150 to approximately 300%.
  11. Seal according to one of claims 7 to 10, characterised in that the material of the sealing body (1) retains the values stated in claims 7 to 10 even after ageing under the operating conditions in a floor cleaning appliance with constant oscillatory loading and elevated temperatures.
  12. Seal according to one or more of the preceding claims, characterised in that the buffer part (3) is provided with at least one recess (5) for setting an elasticity different from the sealing ring (2).
  13. Seal according to claim 12, characterised in that several recesses (5) in the form of approximately equidistant blind holes are provided.
  14. An arrangement, characterised in that it is constructed with use of the seal according to one of the preceding claims.
EP02772345A 2001-10-01 2002-09-24 Device for application in a fan arrangement Expired - Lifetime EP1438512B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10148510 2001-10-01
DE10148510A DE10148510C1 (en) 2001-10-01 2001-10-01 Seal for use in a blower arrangement
PCT/EP2002/010754 WO2003029657A1 (en) 2001-10-01 2002-09-24 Device for application in a fan arrangement

Publications (2)

Publication Number Publication Date
EP1438512A1 EP1438512A1 (en) 2004-07-21
EP1438512B1 true EP1438512B1 (en) 2007-03-21

Family

ID=7701064

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02772345A Expired - Lifetime EP1438512B1 (en) 2001-10-01 2002-09-24 Device for application in a fan arrangement

Country Status (10)

Country Link
US (2) US7101148B2 (en)
EP (1) EP1438512B1 (en)
CN (1) CN1561437B (en)
AT (1) ATE357599T1 (en)
CZ (1) CZ2004444A3 (en)
DE (2) DE10148510C1 (en)
ES (1) ES2283599T3 (en)
HU (1) HU229110B1 (en)
PL (1) PL205050B1 (en)
WO (1) WO2003029657A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10148510C1 (en) * 2001-10-01 2003-06-18 Bsh Bosch Siemens Hausgeraete Seal for use in a blower arrangement
CN1540476B (en) * 2003-04-25 2010-05-26 建准电机工业股份有限公司 Body case of heat radiation fan possessing pressing forming shell
DE10329336A1 (en) * 2003-06-30 2005-01-20 Friedrich Boysen Gmbh & Co. Kg flap valve
DE10336827A1 (en) * 2003-08-11 2005-03-10 Bsh Bosch Siemens Hausgeraete Vacuum cleaner with a blower capsule
DE102012211250A1 (en) 2012-06-29 2014-01-02 BSH Bosch und Siemens Hausgeräte GmbH Vacuum cleaner fan and vacuum cleaner with a vacuum cleaner fan
US9945390B2 (en) 2014-07-31 2018-04-17 Regal Beloit America, Inc. Centrifugal blower and method of assembling the same
JP6450928B2 (en) * 2014-10-17 2019-01-16 パナソニックＩｐマネジメント株式会社 Electric blower and electric vacuum cleaner using the same
US10174768B2 (en) 2015-09-08 2019-01-08 Regal Beloit America, Inc. Centrifugal blower and method of assembling the same
CN105697409A (en) * 2016-03-23 2016-06-22 湖南巴陵炉窑节能股份有限公司 Internal-leakage-preventing centrifugal fan
FR3089108B1 (en) * 2018-11-30 2021-11-05 Seb Sa Suction device for household vacuum cleaners equipped with a damping element

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Publication number Priority date Publication date Assignee Title
DE2109409A1 (en) * 1971-02-27 1972-09-07 Luft U Kaeltetechnik Veb K Arrangement to reduce gap losses in fans with a swinging impeller
JP2987286B2 (en) * 1994-01-12 1999-12-06 株式会社日立製作所 Electric blower
DE19507270C5 (en) * 1994-03-03 2005-10-06 Samsung Kwangju Electronics Co., Ltd. Vibration-isolating device for a vacuum cleaner
DE19717154A1 (en) * 1997-04-23 1998-10-29 Bosch Siemens Hausgeraete Fan arrangement
CN2303100Y (en) * 1997-07-25 1999-01-06 东北大学 Two side oil-free swirl vacuum pump
DE19855905B4 (en) * 1998-12-03 2013-02-21 BSH Bosch und Siemens Hausgeräte GmbH blower assembly
DE19919844A1 (en) * 1999-04-30 2000-11-02 Kaercher Gmbh & Co Alfred Floor cleaning device
US6439843B1 (en) * 2000-11-16 2002-08-27 Ametek, Inc. Motor/fan assembly having a radial diffuser bypass
DE10148510C1 (en) * 2001-10-01 2003-06-18 Bsh Bosch Siemens Hausgeraete Seal for use in a blower arrangement

Also Published As

Publication number Publication date
US20070003409A1 (en) 2007-01-04
WO2003029657A1 (en) 2003-04-10
US20050074327A1 (en) 2005-04-07
CZ2004444A3 (en) 2004-12-15
US7473071B2 (en) 2009-01-06
DE50209796D1 (en) 2007-05-03
PL205050B1 (en) 2010-03-31
DE10148510C1 (en) 2003-06-18
PL367489A1 (en) 2005-02-21
HU229110B1 (en) 2013-08-28
HUP0401755A2 (en) 2004-11-29
ATE357599T1 (en) 2007-04-15
CN1561437A (en) 2005-01-05
ES2283599T3 (en) 2007-11-01
EP1438512A1 (en) 2004-07-21
CN1561437B (en) 2010-10-06
US7101148B2 (en) 2006-09-05

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