EP3847373A1 - Fan device comprising a closed triangular sealing groove - Google Patents

Fan device comprising a closed triangular sealing groove

Info

Publication number
EP3847373A1
EP3847373A1 EP19795539.6A EP19795539A EP3847373A1 EP 3847373 A1 EP3847373 A1 EP 3847373A1 EP 19795539 A EP19795539 A EP 19795539A EP 3847373 A1 EP3847373 A1 EP 3847373A1
Authority
EP
European Patent Office
Prior art keywords
diffuser
housing
blower
sealing
blower device
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.)
Granted
Application number
EP19795539.6A
Other languages
German (de)
French (fr)
Other versions
EP3847373B1 (en
Inventor
Tobias Schmidt
Christian PETRYSZAK
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 Landshut GmbH
Original Assignee
Ebm Papst Landshut GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ebm Papst Landshut GmbH filed Critical Ebm Papst Landshut GmbH
Priority to PL19795539T priority Critical patent/PL3847373T3/en
Publication of EP3847373A1 publication Critical patent/EP3847373A1/en
Application granted granted Critical
Publication of EP3847373B1 publication Critical patent/EP3847373B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F04D29/08—Sealings
    • F04D29/083—Sealings 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
    • 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
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • 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
    • F04D29/441—Fluid-guiding means, e.g. diffusers 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/626—Mounting or removal of fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/10—Two-dimensional
    • F05D2250/11—Two-dimensional triangular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/51—Inlet

Definitions

  • the invention relates to a blower device with a blower housing, a diffuser housing fastened to the blower housing and a diffuser accommodated in the diffuser housing, which are sealed against one another.
  • a blower device with a blower housing, a diffuser housing fastened to the blower housing and a diffuser accommodated in the diffuser housing, which are sealed against one another.
  • Blower housing via a second axial seal via a second axial seal.
  • elastic sealing elements always generate an axial force on the adjacent components when installed.
  • a blower device with a blower housing of a blower is attached to the blower housing
  • Diffuser housing and a diffuser accommodated in the diffuser housing are proposed, being between the blower housing, the
  • the three sealing surfaces of the triangular sealing groove are arranged in a right-angled triangle. This creates an optimally aligned sealing surface on each of the blower housing, diffuser housing and diffuser components.
  • Blower housing inserted in the axial direction. Axial forces between the construction parts would, however, cause a separation of the diffuser and fan housing in the axial direction, which must be avoided.
  • the sealing surface on the blower housing is formed by an axial surface facing the diffuser housing. This axial surface runs perpendicular to the sealing surface formed by the diffuser, so that two of the three sealing surfaces are at a 90 ° angle to one another.
  • the sealing element therefore preferably bears axially on the fan housing on the axial surface and radially on the outside on the radial outer surface of the diffuser.
  • the third sealing surface on the diffuser housing is formed by a conical outer surface which is oriented towards the diffuser accommodated in the diffuser housing and the blower housing and extends to the two sealing surfaces formed by these components at a 45 ° angle.
  • the sealing element is preferably formed by an elastic sealing ring with a circular cross-section, i.e. in particular an O-ring.
  • Sealing ring cross-sectional area to the triangular groove cross-sectional area lies in a range of 0.6-0.72.
  • the sealing element is pressed in the triangular groove in the assembled state through the three sealing surfaces to a fail-safe degree.
  • the diffuser has a radial peripheral section which bears on the axial surface of the blower housing.
  • the radial circumferential section preferably surrounds the flow passage formed by the diffuser and forms a radially outer fastening section to be fastened Arrangement of the diffuser within the diffuser housing.
  • Blower housing assembled state into a blower housing opening of the blower housing, in particular an inlet opening of the blower.
  • the interaction of the diffuser and diffuser housing also provides in a further development that the diffuser housing and the diffuser have an overlap section which extends in the axial direction parallel to the outer lateral surface of the diffuser and which directly adjoins the conical lateral surface formed by the diffuser housing.
  • the diffuser housing and the diffuser lie at least in sections directly against one another and form a coupling surface adjacent to the triangular sealing groove.
  • Fig. 1 is a perspective view of a blower Blower device
  • Fig. 2 is a side sectional view of a part of the blower device in which the components are connected.
  • Figure 1 shows a fan 100 on which the
  • FIG. 2 shows an exemplary embodiment of the blower device 1 in a side sectional view, only the area in which the components are connected to one another and sealed against one another is shown.
  • the blower device 1 comprises the blower housing 2 of a blower, the diffuser housing 3 fastened to the blower housing 2 and the diffuser 4 accommodated in the diffuser housing 3.
  • the diffuser 4 is fastened to the suction opening 15 of the blower housing 2 and has a hollow radial peripheral section 9 protrudes in the radial direction with respect to the axis-central flow passage 49 and forms a flange as a fastening section. With this flange, the diffuser 4 rests against the axial surface of the blower housing 2.
  • the engagement section 19 ′ extending in the axial direction over the circumferential section 9 is provided in one piece on the diffuser 4, which extends into the inlet opening 21 of the blower housing 2 and bears against its inner wall.
  • the diffuser 4 can therefore be arranged in a fixed position relative to the blower housing 2.
  • the closed triangular sealing groove 10 is formed with three Dichtflä surfaces, which by the axial surface 6 of the blower housing 2, the radia- le outer surface 5 on the peripheral portion 9 of the diffuser 4 and the radially inwardly facing conical surface 7 of the diffuser housing 3 is realized.
  • the three sealing surfaces of the triangular sealing groove 10 are arranged in a right triangle relative to one another, the conical surface 7 of the diffuser housing 3 representing the hypotenuse.
  • the triangular sealing groove 10 forms a receiving space for the elastic sealing ring 8 designed as an O-ring, which seals the blower housing 2, the diffuser housing 3 and the diffuser 4 against one another.
  • the diffuser housing 3 and the diffuser 4 have an overlap section 13 which extends in the axial direction AR parallel to the outer lateral surface 5 of the diffuser 4 and which directly adjoins the conical outer surface 7 formed by the diffuser housing 3 in the axial direction AR and via a predetermined one Axial length extends parallel to the peripheral portion 9 of the diffuser 4, which
  • the diffuser housing 3 and the diffuser 4 lie flat against one another in the overlap section 13. In the same way, the overlap section 15 through the blower housing 2 and the peripheral section 9 of the diffuser 4 and the overlap section 16 between the
  • Axial stop 19 can be preassembled and already form the receiving space of the triangular sealing groove 10 for receiving the elastic sealing ring 8.
  • the blower housing 2 is placed on the pre-assembled components, thereby closing the triangular sealing groove 10 and compressing the elastic sealing ring 8.
  • the elastic sealing ring 8 acts exclusively radially on the outside against the lateral surface 5 of the diffuser 4 and thus generates no nei axial force between the fan housing 2 and the diffuser 4 in the assembled state, which could separate the components from one another and produce a leak.

Abstract

The invention relates to a fan device having a fan housing for a fan, a diffusor housing secured to the fan housing, and a diffusor received in the diffusor housing, wherein a closed triangular sealing groove with three sealing faces is formed between the fan housing, the diffusor housing and the diffusor, wherein the fan housing, the diffusor housing and the diffusor each form one of the three sealing faces, and wherein a seal element is arranged in the closed triangular sealing groove and seals the fan housing, the diffusor housing and the diffusor with respect to one another.

Description

GEBLÄSEVORRICHTUNG UMFASSEND EINE GESCHLOSSENE DREIECKDICHTNUT  FAN DEVICE COMPREHENSIVE OF A CLOSED TRIANGLE SEAL
Beschreibung: Description:
Die Erfindung betrifft eine Gebläsevorrichtung mit einem Gebläsegehäuse, einem an dem Gebläsegehäuse befestigten Diffusorgehäuse und einem in dem Diffusorgehäuse aufgenommenen Diffusor, die gegeneinander abgedichtet sind. Entsprechende Gebläsevorrichtungen mit Gebläsegehäuse, einem an dem Gebläsegehäuse befestigten Diffusorgehäuse und einem in dem The invention relates to a blower device with a blower housing, a diffuser housing fastened to the blower housing and a diffuser accommodated in the diffuser housing, which are sealed against one another. Corresponding blower devices with blower housing, a diffuser housing attached to the blower housing and one in the
Diffusorgehäuse aufgenommenen Diffusor sind aus dem Stand der Technik bekannt. Beispielsweise werden diese in der Heiztechnik eingesetzt, wobei an der Einlassöffnung des Gebläses ein in einem Diffusorgehäuse aufge nommener Diffusor vorgeschaltet ist. Die Abdichtung zueinander erfolgt im Stand der Technik über Dichtelemente, von denen jeweils eines zwischen jeweils zwei der Bauteile angeordnet ist. Insbesondere erfolgte die Abdich- tung des Gebläsegehäuses gegenüber dem Diffusorgehäuse über eine erste Axialdichtung und die Abdichtung des Diffusors gegenüber dem Diffuser housings are known from the prior art. For example, these are used in heating technology, whereby at the inlet opening of the blower, a diffuser accommodated in a diffuser housing is connected upstream. In the prior art, sealing to one another takes place via sealing elements, one of which is arranged between two of the components. In particular, the blower housing was sealed off from the diffuser housing by means of a first axial seal and the diffuser was sealed off from the
Gebläsegehäuse über eine zweite Axialdichtung. Das bedeutet jedoch, dass bei der Montage mehrere Dichtelemente verbaut werden müssen, was zu Montagefehlern und Undichtigkeiten bei einem Ausfall eines der Dichtele- mente führen kann. Zudem erzeugen elastische Dichtelemente im montierten zustand stets eine Axialkraft auf die anliegenden Bauteile. Blower housing via a second axial seal. However, this means that several sealing elements must be installed during assembly, which can lead to assembly errors and leaks in the event of a failure of one of the sealing elements. In addition, elastic sealing elements always generate an axial force on the adjacent components when installed.
Der Erfindung liegt deshalb die Aufgabe zugrunde, eine Gebläsevorrichtung bereitzustellen, mit der ein Gebläsegehäuse, ein Diffusorgehäuse und ein in dem Diffusorgehäuse aufgenommener Diffusor über nur ein Dichtungsele- ment gegeneinander abdichtbar sind. The object of the invention is therefore to provide a blower device with which a blower housing, a diffuser housing and a diffuser accommodated in the diffuser housing can be sealed off from one another by means of only one sealing element.
Diese Aufgabe wird durch die Merkmalskombination gemäß Patentanspruch 1 gelöst. This object is achieved by the combination of features according to claim 1.
Erfindungsgemäß wird eine Gebläsevorrichtung mit einem Gebläsegehäuse eines Gebläses, einem an dem Gebläsegehäuse befestigten According to the invention, a blower device with a blower housing of a blower is attached to the blower housing
Diffusorgehäuse und einem in dem Diffusorgehäuse aufgenommenen Diffu sor vorgeschlagen, wobei zwischen dem Gebläsegehäuse, dem Diffuser housing and a diffuser accommodated in the diffuser housing are proposed, being between the blower housing, the
Diffusorgehäuse und dem Diffusor eine geschlossene Dreiecksdichtnut mit drei Dichtflächen gebildet ist. Das Gebläsegehäuse, das Diffusorgehäuse und der Diffusor bilden dabei jeweils eine der drei Dichtflächen. In der ge- schlossenen Dreiecksdichtnut ist ein Dichtungselement angeordnet, welches das Gebläsegehäuse, das Diffusorgehäuse und den Diffusor gegeneinander abdichtet. Eine Dreicksdichtnut weist einen dreieckigen Querschnitt auf und wird durch drei Dichtflächen begrenzt. Durch die spezielle Anordnung des Diffuser housing and the diffuser is a closed triangular sealing groove with three sealing surfaces. The blower housing, the diffuser housing and the diffuser each form one of the three sealing surfaces. A sealing element is arranged in the closed triangular sealing groove, which seals the fan housing, the diffuser housing and the diffuser against one another. A triangular sealing groove has a triangular cross section and is delimited by three sealing surfaces. Due to the special arrangement of the
Gebläsegehäuses, des Diffusorgehäuses und des Diffusors zueinander in der Art, dass jedes der Bauteile eine der drei Dichtflächen bildet, kann die Abdichtung mit nur einem einzigen Dichtungselement erfolgen. Dies führt neben einer Koteneinsparung für ein oder mehrere entfallende Dichtungs elemente zu einer Vereinfachung der Montage der Bauteile. Das Risiko, dass ein Dichtungselement vergessen wird, ist bei nur einem einzigen vorzuse henden Dichtungselement vergleichsweise geringer, als wenn mehrere Dich- tungselemente an verschiedenen Stellen verbaut werden müssen. Zudem wird das Risiko einer fehlerhaften Montage der Dichtungselemente reduziert, da die Dreiecksdichtnut bereits bei einer Vormontage von zwei der drei Bau teilen eine vordefinierten Aufnahmeraum bestimmt, in den das eine Dich tungselement eingelegt wird. Anschließend wird das dritte Bauteil lediglich ergänzt und verschließt die Dreiecksdichtnut mit dem darin angeordneten Dichtungselement.  Blower housing, the diffuser housing and the diffuser to each other in such a way that each of the components forms one of the three sealing surfaces, the sealing can be done with only a single sealing element. In addition to saving on costs for one or more omitted sealing elements, this simplifies the assembly of the components. The risk of a sealing element being forgotten is comparatively less with only a single sealing element to be provided than when several sealing elements have to be installed at different locations. In addition, the risk of incorrect installation of the sealing elements is reduced, since the triangular sealing groove already determines a predefined receiving space in which two of the three construction parts are pre-assembled, in which a sealing element is inserted. Subsequently, the third component is merely added and closes the triangular sealing groove with the sealing element arranged therein.
Bei der Gebläsevorrichtung ist vorzugsweise vorgesehen, dass die drei Dichtflächen der Dreiecksdichtnut in einem rechtwinkligen Dreieck angeord net sind. Hierdurch erfolgt eine optimal ausgerichtete Dichtungsfläche an je- des der Bauteile Gebläsegehäuse, Diffusorgehäuse und Diffusor. In the blower device, it is preferably provided that the three sealing surfaces of the triangular sealing groove are arranged in a right-angled triangle. This creates an optimally aligned sealing surface on each of the blower housing, diffuser housing and diffuser components.
Ferner sieht eine Weiterbildung der Gebläsevorrichtung vor, dass die durch den Diffusor gebildete Dichtfläche der Dreiecksdichtnut an einer radialen Au ßenmantelfläche des Diffusors ausgebildet ist. Das Dichtungselement wirkt dabei vorzugsweise gegen den Diffusor ausschließlich in radialer Richtung, so dass auf den Diffusor im montierten Zustand keine durch das Dichtungs element begründeten Axialkräfte wirken. Der Diffusor wird in das Furthermore, a development of the blower device provides that the sealing surface of the triangular sealing groove formed by the diffuser is formed on a radial outer surface of the diffuser. The sealing element preferably acts against the diffuser exclusively in the radial direction, so that no axial forces caused by the sealing element act on the diffuser in the assembled state. The diffuser is in the
Gebläsegehäuse in Axialrichtung eingesetzt. Axialkräfte zwischen den Bau- teilen würden jedoch eine Trennung von Diffusor und Gebläsegehäuse in Axialrichtung bewirken, die zu vermeiden ist. Blower housing inserted in the axial direction. Axial forces between the construction parts would, however, cause a separation of the diffuser and fan housing in the axial direction, which must be avoided.
In einer günstigen Ausführung der Gebläsevorrichtung ist die Dichtfläche an dem Gebläsegehäuse durch eine zu dem Diffusorgehäuse weisende Axial- fläche gebildet ist. Diese Axialfläche verläuft senkrecht zu der durch den Diffusor gebildeten Dichtfläche, so dass zwei der drei Dichtflächen im 90°- Winkel zueinander stehen. Das Dichtungselement liegt mithin vorzugsweise an der Axialfläche axial an dem Gebläsegehäuse und radial außenseitig an der radialen Außenmantelfläche des Diffusors an. Die dritte Dichtfläche an dem Diffusorgehäuse wird in einer bevorzugten Aus führung durch eine Kegelmantelfläche gebildet, welche zu dem in dem Diffusorgehäuse aufgenommen Diffusor sowie dem Gebläsegehäuse wei send ausgerichtet ist und zu den beiden durch diese Bauteile jeweils gebilde ten Dichtflächen im 45°-Winkel verläuft. Das Dichtungselement wird vorzugsweise durch einen elastischen Dichtring mit kreisförmigem Querschnitt, d.h. insbesondere einen O-Ring gebildet. Da bei sieht eine vorteilhafte Ausführung vor, dass ein Verhältnis der In a favorable embodiment of the blower device, the sealing surface on the blower housing is formed by an axial surface facing the diffuser housing. This axial surface runs perpendicular to the sealing surface formed by the diffuser, so that two of the three sealing surfaces are at a 90 ° angle to one another. The sealing element therefore preferably bears axially on the fan housing on the axial surface and radially on the outside on the radial outer surface of the diffuser. In a preferred embodiment, the third sealing surface on the diffuser housing is formed by a conical outer surface which is oriented towards the diffuser accommodated in the diffuser housing and the blower housing and extends to the two sealing surfaces formed by these components at a 45 ° angle. The sealing element is preferably formed by an elastic sealing ring with a circular cross-section, i.e. in particular an O-ring. An advantageous embodiment provides that a ratio of
Dichtringquerschnittsfläche zu der Dreiecksnutquerschnittsfläche in einem Bereich von 0,6 - 0,72 liegt. Das Dichtungselement wird dabei in der Drei- ecksnut im montierten Zustand durch die drei Dichtflächen in einem ausfallsi cheren Maße verpresst. Sealing ring cross-sectional area to the triangular groove cross-sectional area lies in a range of 0.6-0.72. The sealing element is pressed in the triangular groove in the assembled state through the three sealing surfaces to a fail-safe degree.
Eine Weiterbildung der Gebläsevorrichtung sieht zudem vor, dass der Diffusor einen radialen Umfangsabschnitt aufweist, der an der Axialfläche des Gebläsegehäuses anliegt. Der radiale Umfangsabschnitt umschließt vor- zugsweise den durch den Diffusor gebildeten Strömungsdurchgang und bildet einen radial außen liegenden Befestigungsabschnitt zur befestigenden Anordnung des Diffusors innerhalb des Diffusorgehäuses. A further development of the blower device also provides that the diffuser has a radial peripheral section which bears on the axial surface of the blower housing. The radial circumferential section preferably surrounds the flow passage formed by the diffuser and forms a radially outer fastening section to be fastened Arrangement of the diffuser within the diffuser housing.
Ferner umfasst der Diffusor in einer günstigen Ausführungsvariante eine zu dem Gebläsegehäuse weisende axiale Anlagefläche und einen gegenüber der Anlagefläche axial vorstehenden Eingriffsabschnitt. Die axiale Anlageflä- che ist vorzugsweise am radialen Umfangsabschnitt des Diffusors und der Eingriffsabschnitt zu dem Umfangsabschnitt benachbart ausgebildet. Der in Axialrichtung vorspringende Eingriffsabschnitt ragt im an das Furthermore, in a favorable embodiment variant, the diffuser comprises an axial contact surface facing the fan housing and an engagement section projecting axially with respect to the contact surface. The axial contact surface is preferably formed on the radial peripheral section of the diffuser and the engagement section is adjacent to the peripheral section. The engaging portion projecting in the axial direction projects into the
Gebläsegehäuse montierten Zustand in eine Gebläsegehäuseöffnung des Gebläsegehäuses, insbesondere eine Einlassöffnung des Gebläses, hinein. Das Zusammenwirken von Diffusor und Diffusorgehäuse sieht in einer Wei terbildung zudem vor, dass das Diffusorgehäuse und der Diffusor einen sich in Axialrichtung parallel zur äußeren Mantelfläche des Diffusors erstrecken den Überlappungsabschnitt aufweisen, der sich unmittelbar an die durch das Diffusorgehäuse gebildete Kegelmantelfläche anschließt. Somit liegen das Diffusorgehäuse und der Diffusor zumindest abschnittsweise flächig unmit telbar aneinander an und bilden eine an die Dreiecksdichtnut angrenzende Kopplungsfläche. Blower housing assembled state into a blower housing opening of the blower housing, in particular an inlet opening of the blower. The interaction of the diffuser and diffuser housing also provides in a further development that the diffuser housing and the diffuser have an overlap section which extends in the axial direction parallel to the outer lateral surface of the diffuser and which directly adjoins the conical lateral surface formed by the diffuser housing. Thus, the diffuser housing and the diffuser lie at least in sections directly against one another and form a coupling surface adjacent to the triangular sealing groove.
Eine vorteilhafte Weiterbildung der Gebläsevorrichtung sieht zudem vor, dass an dem Diffusorgehäuse ein Axialanschlag ausgebildet, an welchem der Dif- fusors zur Anlage gebracht ist. Der Axialanschlag legt die Position des Diffu sors in dem Diffusorgehäuse und relativ zu dem Gebläsegehäuse fest. An advantageous development of the blower device also provides that an axial stop is formed on the diffuser housing, on which the diffuser is brought into contact. The axial stop defines the position of the diffuser in the diffuser housing and relative to the blower housing.
Andere vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet bzw. werden nachstehend zusammen mit der Be schreibung der bevorzugten Ausführung der Erfindung anhand der Figuren näher dargestellt. Es zeigen: Other advantageous developments of the invention are characterized in the subclaims or are shown below together with the description of the preferred embodiment of the invention with reference to the figures. Show it:
Fig. 1 einen perspektivische Ansicht eines Gebläses mit Gebläsevorrichtung; Fig. 1 is a perspective view of a blower Blower device;
Fig. 2 eine seitliche Schnittansicht eines Teils der Gebläsevorrichtung, in dem die Bauteile verbunden sind. Fig. 2 is a side sectional view of a part of the blower device in which the components are connected.
Figur 1 zeigt zum leichteren Verständnis ein Gebläse 100, an dem die Figure 1 shows a fan 100 on which the
Gebläsevorrichtung 1 gemäß Figur 2 verbaut ist. Blower device 1 is installed according to Figure 2.
In Figur 2 ist ein Ausführungsbeispiel der Gebläsevorrichtung 1 in seitlicher Schnittansicht dargestellt, wobei lediglich der Bereich gezeigt ist, in dem die Bauteile miteinander verbunden und gegeneinander abgedichtet sind. Die Gebläsevorrichtung 1 umfasst das Gebläsegehäuse 2 eines Gebläses, das an dem Gebläsegehäuse 2 befestigte Diffusorgehäuse 3 und den in dem Diffusorgehäuse 3 aufgenommenen Diffusor 4. Der Diffusor 4 ist an der Ansaugöffnung 15 des Gebläsegehäuses 2 befestigt und weist einen hohlen radialen Umfangsabschnitt 9 auf, der in radiale Richtung gegenüber dem achszentralen Strömungsdurchgang 49 hervorsteht und als Befestigungsab- schnitt einen Flansch bildet. Mit diesem Flansch liegt der Diffusor 4 der an der Axialfläche des Gebläsegehäuses 2 an. In axialer Verlängerung des Strömungsdurchgangs 49 ist an dem Diffusor 4 einstückig der in Axialrich tung den Umfangsabschnitt 9 überstreckende Eingriffsabschnitt 19‘ vorgesehen, der sich in die Einlassöffnung 21 des Gebläsegehäuses 2 hinein er- streckt und an ihrer Innenwand anliegt. Der Diffusor 4 ist mithin gegenüber dem Gebläsegehäuse 2 positionsfest anordenbar. FIG. 2 shows an exemplary embodiment of the blower device 1 in a side sectional view, only the area in which the components are connected to one another and sealed against one another is shown. The blower device 1 comprises the blower housing 2 of a blower, the diffuser housing 3 fastened to the blower housing 2 and the diffuser 4 accommodated in the diffuser housing 3. The diffuser 4 is fastened to the suction opening 15 of the blower housing 2 and has a hollow radial peripheral section 9 protrudes in the radial direction with respect to the axis-central flow passage 49 and forms a flange as a fastening section. With this flange, the diffuser 4 rests against the axial surface of the blower housing 2. In an axial extension of the flow passage 49, the engagement section 19 ′ extending in the axial direction over the circumferential section 9 is provided in one piece on the diffuser 4, which extends into the inlet opening 21 of the blower housing 2 and bears against its inner wall. The diffuser 4 can therefore be arranged in a fixed position relative to the blower housing 2.
Der Diffusor 4 ist in dem Diffusorgehäuse 3 derart aufgenommen, dass es den Diffusor 4 in Umfangsrichtung umschließt. Zwischen dem The diffuser 4 is accommodated in the diffuser housing 3 in such a way that it surrounds the diffuser 4 in the circumferential direction. Between the
Gebläsegehäuse 2, dem Diffusorgehäuse 3 und dem Umfangsabschnitt 9 des Diffusors 4 ist die geschlossene Dreiecksdichtnut 10 mit drei Dichtflä chen gebildet, die durch die Axialfläche 6 des Gebläsegehäuses 2, die radia- le Außenmantelfläche 5 am Umfangsabschnitt 9 des Diffusors 4 und die radial einwärts weisende Kegelmantelfläche 7 des Diffusorgehäuses 3 realisiert ist. Die drei Dichtflächen der Dreiecksdichtnut 10 sind in einem rechtwinkli gen Dreieck zueinander angeordnet, wobei die Kegelmantelfläche 7 des Diffusorgehäuses 3 die Hypotenuse darstellt. Die Dreiecksdichtnut 10 bildet einen Aufnahmeraum für den als O-Ring ausgebildeten elastischen Dichtring 8, welcher das Gebläsegehäuse 2, das Diffusorgehäuse 3 und den Diffusor 4 gegeneinander abdichtet. Das Verhältnis der Dichtringquerschnittsfläche zur Dreiecksnutquerschnittsfläche liegt im gezeigten Ausführungsbeispiel bei 0,65, wobei als Dichtringquerschnittsfläche die von dem Dichtring 8, d.h. seinem Außenumfang eingeschlossene Querschnittsfläche im Schnitt gemäß Figur 1 und als Dreiecksnutquerschnittsfläche die im Schnitt gemäß Figur 1 von der Dreiecksdichtnut 10 eingenommene Querschnittsfläche definiert sind. In allen drei Ecken der Dreiecksdichtnut 10 überlappen sich die jeweils die Ecke ausbildenden Bauteile. Das Diffusorgehäuse 3 und der Diffusor 4 wei sen hierzu einen sich in Axialrichtung AR parallel zur äußeren Mantelfläche 5 des Diffusors 4 erstreckenden Überlappungsabschnitt 13 auf, der sich in Axialrichtung AR unmittelbar an die durch das Diffusorgehäuse 3 gebildete Ke- gelmantelfläche 7 anschließt und über eine vorbestimmte Axiallänge parallel mit dem Umfangsabschnitt 9 des Diffusors 4 erstreckt, wobei das Blower housing 2, the diffuser housing 3 and the peripheral portion 9 of the diffuser 4, the closed triangular sealing groove 10 is formed with three Dichtflä surfaces, which by the axial surface 6 of the blower housing 2, the radia- le outer surface 5 on the peripheral portion 9 of the diffuser 4 and the radially inwardly facing conical surface 7 of the diffuser housing 3 is realized. The three sealing surfaces of the triangular sealing groove 10 are arranged in a right triangle relative to one another, the conical surface 7 of the diffuser housing 3 representing the hypotenuse. The triangular sealing groove 10 forms a receiving space for the elastic sealing ring 8 designed as an O-ring, which seals the blower housing 2, the diffuser housing 3 and the diffuser 4 against one another. The ratio of the sealing ring cross-sectional area to the triangular groove cross-sectional area is 0.65 in the exemplary embodiment shown, the cross-sectional area enclosed by the sealing ring 8, ie its outer circumference, in section according to FIG. 1 as the sealing ring cross-sectional area, and the cross-sectional area occupied by the triangular sealing groove 10 in section according to FIG. 1, as the triangular groove cross-sectional area are. The components forming the corner overlap in all three corners of the triangular sealing groove 10. For this purpose, the diffuser housing 3 and the diffuser 4 have an overlap section 13 which extends in the axial direction AR parallel to the outer lateral surface 5 of the diffuser 4 and which directly adjoins the conical outer surface 7 formed by the diffuser housing 3 in the axial direction AR and via a predetermined one Axial length extends parallel to the peripheral portion 9 of the diffuser 4, which
Diffusorgehäuse 3 und der Diffusor 4 im Überlappungsabschnitt 13 flächig unmittelbar aneinander anliegen. In gleicher Weise sind der Überlappungs abschnitt 15 durch das Gebläsegehäuse 2 und den Umfangsabschnitt 9 des Diffusors 4 sowie der Überlappungsabschnitt 16 zwischen dem The diffuser housing 3 and the diffuser 4 lie flat against one another in the overlap section 13. In the same way, the overlap section 15 through the blower housing 2 and the peripheral section 9 of the diffuser 4 and the overlap section 16 between the
Gebläsegehäuse 2 und dem Diffusorgehäuse 3 mit Erstreckung in Radial richtung RR gebildet. Am Diffusorgehäuse 3 ist ferner durch eine in Radialrichtung RR einwärts hervorstehende Nase ein Axialanschlag 19 ausgebildet, an welcher der Um fangsabschnitt 9 des Diffusors 4 zur Anlage gebracht ist. Im montierten Zu stand ist die axiale Position des Diffusors 4 mithin über das Diffusorgehäuse 3 festgelegt. Zudem sind das Diffusorgehäuse 3 und der Diffusor 4 über denBlower housing 2 and the diffuser housing 3 are formed with an extension in the radial direction RR. On the diffuser housing 3, an axial stop 19 is also formed by a nose projecting inward in the radial direction RR, at which the peripheral portion 9 of the diffuser 4 is brought into contact. In the assembled state, the axial position of the diffuser 4 is thus determined via the diffuser housing 3. In addition, the diffuser housing 3 and the diffuser 4 are above
Axialanschlag 19 vormontierbar und bilden bereits den Aufnahmeraum der Dreicksdichtnut 10 zur Aufnahme des elastischen Dichtrings 8. Auf die vor montierten Bauteile wird das Gebläsegehäuse 2 aufgesetzt, dadurch die Dreiecksdichtnut 10 geschlossen und der elastische Dichtring 8 verpresst. Der elastische Dichtring 8 wirkt ausschließlich radial außenseitig gegen die Mantelfläche 5 des Diffusors 4 und erzeugt somit im montierten Zustand kei ne Axialkraft zwischen dem Gebläsegehäuse 2 und dem Diffusor 4, welche die Bauteile voneinander trennen und ein Leckage erzeugen könnte. Axial stop 19 can be preassembled and already form the receiving space of the triangular sealing groove 10 for receiving the elastic sealing ring 8. The blower housing 2 is placed on the pre-assembled components, thereby closing the triangular sealing groove 10 and compressing the elastic sealing ring 8. The elastic sealing ring 8 acts exclusively radially on the outside against the lateral surface 5 of the diffuser 4 and thus generates no nei axial force between the fan housing 2 and the diffuser 4 in the assembled state, which could separate the components from one another and produce a leak.

Claims

Patentansprüche Claims
1. Gebläsevorrichtung (1) mit einem Gebläsegehäuse (2) eines Geblä ses (100), einem an dem Gebläsegehäuse (2) befestigten 1. Blower device (1) with a blower housing (2) of a blower (100), one attached to the blower housing (2)
Diffusorgehäuse (3) und einem in dem Diffusorgehäuse (3) aufge- nommenen Diffusor, wobei zwischen dem Gebläsegehäuse (2), dem Diffuser housing (3) and a diffuser accommodated in the diffuser housing (3), whereby between the blower housing (2), the
Diffusorgehäuse (3) und dem Diffusor (4) eine geschlossene Drei ecksdichtnut (10) mit drei Dichtflächen gebildet ist, wobei das Gebläsegehäuse (2), das Diffusorgehäuse (3) und der Diffusor (4) je weils eine der drei Dichtflächen bilden, und wobei in der geschlosse- nen Dreiecksdichtnut (10) ein Dichtungselement angeordnet ist, wel ches das Gebläsegehäuse (2), das Diffusorgehäuse (3) und den Dif fusor (4) gegeneinander abdichtet. Diffuser housing (3) and the diffuser (4) a closed three corner sealing groove (10) is formed with three sealing surfaces, the blower housing (2), the diffuser housing (3) and the diffuser (4) each forming one of the three sealing surfaces, and a sealing element being arranged in the closed triangular sealing groove (10), which seals the blower housing (2), the diffuser housing (3) and the diffuser (4) against one another.
2. Gebläsevorrichtung (1) nach Anspruch 1 , dadurch gekennzeichnet, dass die drei Dichtflächen der Dreiecksdichtnut (10) in einem recht winkligen Dreieck angeordnet sind. 2. Blower device (1) according to claim 1, characterized in that the three sealing surfaces of the triangular sealing groove (10) are arranged in a right angled triangle.
3. Gebläsevorrichtung (1) nach Anspruch 1 oder 2, dadurch gekenn zeichnet, dass die durch den Diffusor (4) gebildete Dichtfläche der Dreiecksdichtnut (10) an einer radialen Außenmantelfläche (5) des Diffusors ausgebildet ist. 3. Blower device (1) according to claim 1 or 2, characterized in that the sealing surface formed by the diffuser (4) of the triangular sealing groove (10) is formed on a radial outer lateral surface (5) of the diffuser.
4. Gebläsevorrichtung (1) nach Anspruch 3, dadurch gekennzeichnet, dass das Dichtungselement gegen den Diffusor (4) ausschließlich in radialer Richtung wirkt. 4. Blower device (1) according to claim 3, characterized in that the sealing element against the diffuser (4) acts exclusively in the radial direction.
5. Gebläsevorrichtung (1) nach einem der vorigen Ansprüche, dadurch gekennzeichnet, dass die Dichtfläche an dem Gebläsegehäuse (2) durch eine zu dem Diffusorgehäuse (3) weisende Axialfläche (6) gebildet ist. 5. Blower device (1) according to one of the preceding claims, characterized in that the sealing surface on the blower housing (2) is formed by an axial surface (6) facing the diffuser housing (3).
6. Gebläsevorrichtung (1) nach dem vorigen Anspruch, dadurch gekenn zeichnet, dass die zu dem Diffusorgehäuse (3) weisende Axialfiäche (6) des Gebläsegehäuse (2) senkrecht zu der durch den Diffusor (4) gebildeten Dichtfläche verläuft. 6. Blower device (1) according to the preceding claim, characterized in that the axial surface (6) of the blower housing (2) facing the diffuser housing (3) extends perpendicular to the sealing surface formed by the diffuser (4).
7. Gebläsevorrichtung (1) nach einem der vorigen Ansprüche, dadurch gekennzeichnet, dass die Dichtfläche an dem Diffusorgehäuse (3) durch eine Kegelmantelfläche (7) gebildet ist. 7. Blower device (1) according to one of the preceding claims, characterized in that the sealing surface on the diffuser housing (3) is formed by a conical surface (7).
8. Gebläsevorrichtung (1) nach einem der vorigen Ansprüche, dadurch gekennzeichnet, dass das Dichtungselement durch einen elastischen Dichtring (8) mit kreisförmigem Querschnitt gebildet ist. 8. Blower device (1) according to one of the preceding claims, characterized in that the sealing element is formed by an elastic sealing ring (8) with a circular cross section.
9. Gebläsevorrichtung (1) nach dem vorigen Anspruch, dadurch gekenn zeichnet, dass ein Verhältnis einer Dichtring (8) Querschnittsfläche A zu einer Dreiecksnutquerschnittsfläche B in einem Bereich liegt, das gilt: 0,6<A/B<0,72. 9. Blower device (1) according to the preceding claim, characterized in that a ratio of a sealing ring (8) cross-sectional area A to a triangular groove cross-sectional area B is in a range that applies: 0.6 <A / B <0.72.
10. Gebläsevorrichtung (1) nach einem der vorigen Ansprüche 6 - 9, da durch gekennzeichnet, dass der Diffusor (4) einen radialen Umfangs abschnitt (9) aufweist, der an der Axialfläche (6) des 10. Blower device (1) according to any one of the preceding claims 6-9, characterized in that the diffuser (4) has a radial circumferential section (9) on the axial surface (6) of the
Gebläsegehäuses (2) anliegt.  Blower housing (2).
11. Gebläsevorrichtung (1) nach einem der vorigen Ansprüche, dadurch gekennzeichnet, dass der Diffusor (4) eine zu dem Gebläsegehäuse (2) weisende axiale Anlagefläche und einen gegenüber der Anlageflä che axial vorstehenden Eingriffsabschnitt (19‘) aufweist, wobei der Eingriffsabschnitt (19‘) im an das Gebläsegehäuse (2) montierten Zu stand in eine Gebläsegehäuseöffnung hineinragt. 11. Blower device (1) according to one of the preceding claims, characterized in that the diffuser (4) has an axial contact surface facing the blower housing (2) and an axially projecting engagement section (19 ') relative to the contact surface, the engagement section ( 19 ') in the position on the blower housing (2) protrudes into a blower housing opening.
12. Gebläsevorrichtung (1) nach einem der vorigen Ansprüche 3 - 11 , da- durch gekennzeichnet, dass das Diffusorgehäuse (3) und der Diffusor (4) einen sich in Axialrichtung parallel zur äußeren Mantelfläche des Diffusors erstreckenden Überlappungsabschnitt (13, 15, 16) aufwei sen, der sich unmittelbar an die durch das Diffusorgehäuse (3) gebil- dete Kegelmantelfläche (7) anschließt, so dass das Diffusorgehäuse12. Blower device (1) according to one of the preceding claims 3-11, characterized in that the diffuser housing (3) and the diffuser (4) have an overlap section (13, 15, 16) extending in the axial direction parallel to the outer circumferential surface of the diffuser, which overlap directly through the diffuser housing (3). Dete conical surface (7) connects, so that the diffuser housing
(3) und der Diffusor (4) zumindest abschnittsweise flächig unmittelbar aneinander anliegen. (3) and the diffuser (4), at least in sections, lie flat against one another directly.
13. Gebläsevorrichtung (1) nach einem der vorigen Ansprüche, dadurch gekennzeichnet, dass an dem Diffusorgehäuse (3) ein Axialanschlag (19) ausgebildet, an welchem der Diffusor (4) zur Anlage gebracht ist, wobei der Axialanschlag eine Position des Diffusors in dem 13. Blower device (1) according to one of the preceding claims, characterized in that on the diffuser housing (3) an axial stop (19) is formed, on which the diffuser (4) is brought into contact, the axial stop a position of the diffuser in the
Diffusorgehäuse (3) festlegt.  Diffuser housing (3) defines.
EP19795539.6A 2018-11-12 2019-10-28 Blower device comprising a closed triangular sealing groove Active EP3847373B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL19795539T PL3847373T3 (en) 2018-11-12 2019-10-28 Blower device comprising a closed triangular sealing groove

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018128255.9A DE102018128255A1 (en) 2018-11-12 2018-11-12 Blower device
PCT/EP2019/079392 WO2020099107A1 (en) 2018-11-12 2019-10-28 Fan device comprising a closed triangular sealing groove

Publications (2)

Publication Number Publication Date
EP3847373A1 true EP3847373A1 (en) 2021-07-14
EP3847373B1 EP3847373B1 (en) 2022-01-26

Family

ID=68392995

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19795539.6A Active EP3847373B1 (en) 2018-11-12 2019-10-28 Blower device comprising a closed triangular sealing groove

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EP (1) EP3847373B1 (en)
CN (1) CN112955666B (en)
DE (1) DE102018128255A1 (en)
PL (1) PL3847373T3 (en)
WO (1) WO2020099107A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602004012000T2 (en) * 2004-11-08 2009-02-12 Honeywell International Inc. COMPRESSORS WITH VARIABLE GEOMETRY
DE102008003984B4 (en) * 2008-01-11 2011-06-22 MAICO Elektroapparate-Fabrik GmbH, 78056 tubefan
JP2011064118A (en) * 2009-09-16 2011-03-31 Mitsubishi Heavy Ind Ltd Centrifugal compressor
DE102011014117A1 (en) * 2011-03-15 2012-09-20 Ebm-Papst Landshut Gmbh Mixing device for mixing combustion air and gas for a gas appliance
GB2493976B (en) * 2011-08-26 2014-08-13 Dyson Technology Ltd Turbomachine
GB2498547B (en) * 2012-01-19 2015-02-18 Dyson Technology Ltd A fan
DE102012223462B3 (en) * 2012-12-17 2013-08-08 Siemens Aktiengesellschaft Housing of fluid flow machine e.g. compressor, has seal that is arranged to seal the common contact surface in which the sealing elements are arranged, and sealing elements that are arranged axially relative to each other
US10066639B2 (en) * 2015-03-09 2018-09-04 Caterpillar Inc. Compressor assembly having a vaneless space

Also Published As

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WO2020099107A1 (en) 2020-05-22
EP3847373B1 (en) 2022-01-26
DE102018128255A1 (en) 2020-05-14
PL3847373T3 (en) 2022-04-19
CN112955666B (en) 2022-09-23
CN112955666A (en) 2021-06-11

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