EP3751151A1 - Stiffened fan housing part for use in a gas blower - Google Patents

Stiffened fan housing part for use in a gas blower Download PDF

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Publication number
EP3751151A1
EP3751151A1 EP20170151.3A EP20170151A EP3751151A1 EP 3751151 A1 EP3751151 A1 EP 3751151A1 EP 20170151 A EP20170151 A EP 20170151A EP 3751151 A1 EP3751151 A1 EP 3751151A1
Authority
EP
European Patent Office
Prior art keywords
housing part
fan housing
fastening
ribs
part according
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
EP20170151.3A
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German (de)
French (fr)
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EP3751151B1 (en
Inventor
Christian PETRYSZAK
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Ebm Papst Landshut GmbH
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Ebm Papst Landshut GmbH
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Publication of EP3751151A1 publication Critical patent/EP3751151A1/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
    • F04D29/60—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
    • 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
    • F04D29/403—Casings; Connections of working fluid 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
    • 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
    • F04D29/42—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
    • 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
    • F05D2210/00—Working fluids
    • F05D2210/10—Kind or type
    • F05D2210/12—Kind or type gaseous, i.e. compressible
    • 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
    • F05D2240/00—Components
    • F05D2240/10—Stators
    • F05D2240/14—Casings or housings protecting or supporting assemblies within

Definitions

  • the invention relates to a fan housing part with a housing body and a fastening flange which extends radially outward from the housing body and on which a plurality of fastening points for fastening the fan housing part to a gas blower are arranged distributed in the circumferential direction.
  • the invention is therefore based on the object of providing a fan housing part for a gas fan, the flexural strength of which is increased.
  • a fan housing part with a housing body and a fastening flange extending radially outward from the housing body on which a plurality of fastening points for fastening the fan housing part are arranged distributed in the circumferential direction.
  • Radial ribs extending radially in a straight line along the fastening flange are formed between the housing body and the fastening points. These radial ribs are crossed by tangential ribs extending along the fastening flange, which in turn each extend between two of the fastening points tangentially to the housing body and each connect the two fastening points.
  • a radial rib is assigned to each fastening point in order to increase the radial rigidity.
  • the fastening points used are preferably screw-on points formed from material-reinforced through holes in the fastening flange for receiving screws.
  • the ribs are preferably plate-shaped or disk-shaped.
  • the radial ribs run radially outward from the jacket surface of the housing body to the respective fastening point and engage on a side directed radially inward it to the respective attachment point.
  • the tangential ribs are radially spaced from the housing body and, in particular, act on the respective fastening points on a side directed in the circumferential direction.
  • the tangential ribs extend tangentially to and in sections around the housing body, i. the tangential ribs run tangentially from the one fastening point to the housing body and then extend tangentially outward from the housing body towards the next fastening point.
  • two fastening points are always stiffened by at least one tangential rib.
  • each of the radial ribs is crossed by at least one tangential rib.
  • individual or all radial ribs are crossed by a plurality of tangential ribs.
  • an exemplary embodiment of the fan housing part is characterized in that the radial ribs and the tangential ribs alternately penetrate one another as seen in the circumferential direction.
  • the radial rib runs partly through the tangential rib, partly the tangential rib through the radial rib, so that one of the two ribs overstretch the other of the ribs at the point of intersection at the axial height.
  • an embodiment is favorable in which at least three fastening points are provided, which are arranged in the circumferential direction at a distance of 120 ° from one another on a radial outer edge of the fastening flange.
  • a further development provides that two groups of fastening points, each with three, are provided in an arrangement spaced apart by 120 ° in the circumferential direction. So that can Fan housing part can be fixed in two circumferentially rotated fastening positions on the gas fan in a user-specific manner.
  • An embodiment is advantageous in which two of the adjacent fastening points are arranged at an angular distance of 30 ° from one another in the circumferential direction. A total of six fastening points thus result, of which the adjacent ones each have an angular distance of 30 °, with the two groups formed by three fastening points each determining fastening points at an angular distance of 120 °.
  • a further development of the fan housing part also provides that the tangential ribs also intersect. In particular in the case of a solution with two groups and thus a total of six fastening points, further stiffening takes place.
  • each of the radial ribs is crossed by at least one tangential rib.
  • the object is achieved in a particularly advantageous manner in that an axial height of the radial ribs is steadily reduced as it extends radially outward.
  • the tangential ribs advantageously have an axial height h which is in a relationship to a direct distance b between two fastening points, that is 0.2 h / b 0.4. It is also geometrically advantageous if the tangential ribs between two fastening points have an ascending and then descending course with respect to their axial height.
  • a vertex determining the transition between the rising and falling course has a radius R which is in relation to the direct distance b between two fastening points, so that 0.1 R / b 0.3 applies.
  • the fan housing part described here is preferably designed as a diffuser housing for fastening arrangement to a gas fan, the housing body having a diffuser with a suction opening and forms a flow outlet provided on the fastening flange for inflow into the gas blower.
  • a fuel gas connection is provided on the housing body.
  • a gas blower 100 with a blower housing part 1 fixed to it on the suction side is designed as a diffuser housing with a suction opening 14 for ambient air and a fuel gas connection 9.
  • the fan housing part 1 shown comprises the essentially cylindrical housing body 2 which is arranged on an axial end side on a fastening flange 3, the fastening flange 3 extending radially outward over the housing body 2.
  • the fastening flange 3 is the component with which the fan housing part 1 is fixed to the gas blower 100 via the fastening points 4 designed as screw-on points by means of screws 7.
  • two groups with three fastening points 4 each are provided on the fastening flange 3, each of which is spaced apart in the circumferential direction at an angle of 120 °.
  • the fastening points immediately adjacent to one another 4 are again spaced at an angle of 30 °, so that two fastening positions, rotated by 30 °, of the fan housing part 1 on the gas fan 100 result and can be implemented.
  • a radial rib 5 extends in a straight line radially outward from the jacket surface 8 of the housing body 2 to each of the fastening points 4.
  • radial ribs 5 are also provided in intermediate areas, which end at the free radial surrounding edge of the fastening flange 3.
  • the tangential ribs 6 also run between the respectively adjacent fastening points 4 of the two groups, each with three fastening points 4, and cross the radial ribs 5.
  • the radial ribs 5 and the tangential ribs 6 alternately penetrate one another and end at the respective material reinforcement 24 of the fastening points 4
  • Figure 2 clearly shown that the tangential ribs 6 also intersect with one another.
  • the cross ribbing formed from this offers high rigidity in the radial and tangential directions.
  • the tangential ribs 6 are radially spaced from the housing body 3 and run towards the housing body 3 tangentially from the respective fastening point 4.
  • the course of the tangential ribs 6 between two fastening points 4 is arc-shaped with a course that rises and then falls with respect to its axial height.
  • the ratio is set in a range of 0.1-0.3.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Die Erfindung betrifft ein Gebläsegehäuseteil (1) mit einem Gehäusekörper (2) und einem sich von dem Gehäusekörper (2) nach radial außen erstreckenden Befestigungsflansch (3), an dem in Umfangsrichtung verteilt mehrere Befestigungspunkte (4) zur Befestigung des Gebläsegehäuseteils (1) angeordnet sind, wobei zwischen dem Gehäusekörper (2) und den Befestigungspunkten (4) jeweils sich radial geradlinig entlang des Befestigungsflansches (3) erstreckende Radialrippen (5) ausgebildet sind, und wobei die Radialrippen (5) von sich entlang des Befestigungsflansches (3) erstreckenden Tangentialrippen (6) gekreuzt werden, die sich jeweils zwischen zwei der Befestigungspunkte (4) tangential zu dem Gehäusekörper (2) erstrecken und die zwei Befestigungspunkte (4) jeweils verbinden.The invention relates to a fan housing part (1) with a housing body (2) and a fastening flange (3) which extends radially outward from the housing body (2) and on which several fastening points (4) for fastening the fan housing part (1) are arranged distributed in the circumferential direction are, wherein between the housing body (2) and the fastening points (4) each radial ribs (5) extending in a straight line along the fastening flange (3) are formed, and the radial ribs (5) of tangential ribs extending along the fastening flange (3) (6) which each extend between two of the fastening points (4) tangentially to the housing body (2) and each connect the two fastening points (4).

Description

Die Erfindung betrifft ein Gebläsegehäuseteil mit einem Gehäusekörper und einem sich von dem Gehäusekörper nach radial außen erstreckenden Befestigungsflansch, an dem in Umfangsrichtung verteilt mehrere Befestigungspunkte zur Befestigung des Gebläsegehäuseteils an einem Gasgebläse angeordnet sind.The invention relates to a fan housing part with a housing body and a fastening flange which extends radially outward from the housing body and on which a plurality of fastening points for fastening the fan housing part to a gas blower are arranged distributed in the circumferential direction.

Entsprechende Gebläsegehäuseteil mit Gasanschluss sind aus dem Stand der Technik bekannt und werden zunehmend aus Kunststoff gefertigt. Dabei ist sicherzustellen, dass die Steifigkeit ausreichend hoch und der Materialeinsatz gering ist.Corresponding fan housing parts with gas connection are known from the prior art and are increasingly being made of plastic. It must be ensured that the rigidity and the use of material are sufficiently high is low.

Der Erfindung liegt deshalb die Aufgabe zugrunde, ein Gebläsegehäuseteil für ein Gasgebläse bereit zu stellen, dessen Biegesteifigkeit erhöht ist.The invention is therefore based on the object of providing a fan housing part for a gas fan, the flexural strength of which is increased.

Diese Aufgabe wird durch die Merkmalskombination gemäß Patentanspruch 1 gelöst.This object is achieved by the combination of features according to patent claim 1.

Erfindungsgemäß wird ein Gebläsegehäuseteil mit einem Gehäusekörper und einem sich von dem Gehäusekörper nach radial außen erstreckenden Befestigungsflansch vorgeschlagen, an dem in Umfangsrichtung verteilt mehrere Befestigungspunkte zur Befestigung des Gebläsegehäuseteils angeordnet sind. Zwischen dem Gehäusekörper und den Befestigungspunkten sind jeweils sich radial geradlinig entlang des Befestigungsflansches erstreckende Radialrippen ausgebildet. Diese Radialrippen werden von sich entlang des Befestigungsflansches erstreckenden Tangentialrippen gekreuzt, die sich wiederum jeweils zwischen zwei der Befestigungspunkte tangential zu dem Gehäusekörper erstrecken und die zwei Befestigungspunkte jeweils verbinden.According to the invention, a fan housing part with a housing body and a fastening flange extending radially outward from the housing body is proposed, on which a plurality of fastening points for fastening the fan housing part are arranged distributed in the circumferential direction. Radial ribs extending radially in a straight line along the fastening flange are formed between the housing body and the fastening points. These radial ribs are crossed by tangential ribs extending along the fastening flange, which in turn each extend between two of the fastening points tangentially to the housing body and each connect the two fastening points.

Jedem Befestigungspunkt wird eine Radialrippe zugeordnet, um die radiale Steifigkeit zu erhöhen. Zudem erfolgt eine tangential Steifigkeitserhöhung durch die Tangentialrippen, so dass im Ergebnis eine um den Gehäusekörper an dem Befestigungsflansch eine biegesteifigkeitsgesteigerte Kreuzverrippung gebildet wird. Als Befestigungspunkte dienen vorzugsweise Anschraubpunkte gebildet aus materialverstärkten Durchgangslöchern im Befestigungsflansch zur Aufnahme von Schrauben. Die Rippen sind vorzugsweise plattenförmig bzw. scheibenförmig.A radial rib is assigned to each fastening point in order to increase the radial rigidity. In addition, there is a tangential increase in rigidity due to the tangential ribs, so that the result is a cross ribbing with increased flexural rigidity around the housing body on the mounting flange. The fastening points used are preferably screw-on points formed from material-reinforced through holes in the fastening flange for receiving screws. The ribs are preferably plate-shaped or disk-shaped.

Die Radialrippen verlaufen in einer bevorzugten Ausführungsform von der Mantelfläche des Gehäusekörpers bis zu dem jeweiligen Befestigungspunkt nach radial außen und greifen an einer zur radial nach innen gerichteten Seite es jeweiligen Befestigungspunktes an. Die Tangentialrippen sind dabei radial beabstandet zu dem Gehäusekörper und greifen insbesondere an einer in Umfangsrichtung gerichteten Seite an den jeweiligen Befestigungspunkten an.In a preferred embodiment, the radial ribs run radially outward from the jacket surface of the housing body to the respective fastening point and engage on a side directed radially inward it to the respective attachment point. The tangential ribs are radially spaced from the housing body and, in particular, act on the respective fastening points on a side directed in the circumferential direction.

Ferner erstrecken sich die Tangentialrippen in einer axialen Draufsicht gesehen tangential zu dem und abschnittsweise um den Gehäusekörper, d.h. die Tangentialrippen verlaufen von dem einen Befestigungspunkt auf den Gehäusekörper tangential zu und erstreckt sich anschließend tangential nach außen von dem Gehäusekörper weg hin zu dem nächsten Befestigungspunkt. Somit werden immer zwei Befestigungspunkte durch mindestens eine Tangentialrippe versteift.Furthermore, seen in an axial plan view, the tangential ribs extend tangentially to and in sections around the housing body, i. the tangential ribs run tangentially from the one fastening point to the housing body and then extend tangentially outward from the housing body towards the next fastening point. Thus, two fastening points are always stiffened by at least one tangential rib.

In einer vorteilhaften Ausführung ist vorgesehen, dass jede der Radialrippen von mindestens einer Tangentialrippe gekreuzt wird. Es ist jedoch auch umfasst, dass einzelne oder alle Radialrippen von mehreren Tangentialrippen gekreuzt werden.In an advantageous embodiment it is provided that each of the radial ribs is crossed by at least one tangential rib. However, it is also included that individual or all radial ribs are crossed by a plurality of tangential ribs.

Ferner ist ein Ausführungsbeispiel des Gebläsegehäuseteils dadurch gekennzeichnet, dass die Radialrippen und die Tangentialrippen sich in Umfangsrichtung gesehen abwechselnd gegenseitig durchdringen. An den Kreuzungspunkten von Radialrippen und Tangentialrippen verläuft teils die Radialrippe durch die Tangentialrippe, teils die Tangentialrippe durch die Radialrippe hindurch, so dass eine der beiden Rippen die jeweils andere der Rippen in axialer Höhe am Kreuzungspunkt überstreckt.Furthermore, an exemplary embodiment of the fan housing part is characterized in that the radial ribs and the tangential ribs alternately penetrate one another as seen in the circumferential direction. At the intersection of radial ribs and tangential ribs, the radial rib runs partly through the tangential rib, partly the tangential rib through the radial rib, so that one of the two ribs overstretch the other of the ribs at the point of intersection at the axial height.

Ferner ist eine Ausführung günstig, bei der mindestens drei Befestigungspunkte vorgesehen sind, die in Umfangsrichtung in einem 120°-Abstand zueinander an einem radialen Außenrand des Befestigungsflansches angeordnet sind. Eine Weiterbildung sieht zudem vor, dass zwei Gruppen von Befestigungspunkten mit jeweils drei in in Umfangsrichtung um 120° beabstandeter Anordnung vorgesehen sind. Somit kann das Gebläsegehäuseteil in zwei in Umfangsrichtung gedrehten Befestigungspositionen an dem Gasgebläse anwenderspezifisch fixiert werden. Dabei ist eine Ausführung vorteilhaft, bei der jeweils zwei der benachbarten Befestigungspunkte in einem Winkelabstand von 30° in Umfangsrichtung zueinander angeordnet sind. Insgesamt ergeben sich somit sechs Befestigungspunkte von denen die jeweils benachbarten einen Winkelabstand von 30° aufweisen, wobei die zwei durch jeweils drei Befestigungspunkte gebildeten Gruppen Befestigungspunkte im 120°-Winkelabstand bestimmen.Furthermore, an embodiment is favorable in which at least three fastening points are provided, which are arranged in the circumferential direction at a distance of 120 ° from one another on a radial outer edge of the fastening flange. A further development provides that two groups of fastening points, each with three, are provided in an arrangement spaced apart by 120 ° in the circumferential direction. So that can Fan housing part can be fixed in two circumferentially rotated fastening positions on the gas fan in a user-specific manner. An embodiment is advantageous in which two of the adjacent fastening points are arranged at an angular distance of 30 ° from one another in the circumferential direction. A total of six fastening points thus result, of which the adjacent ones each have an angular distance of 30 °, with the two groups formed by three fastening points each determining fastening points at an angular distance of 120 °.

Eine Weiterbildung des Gebläsegehäuseteils sieht zudem vor, dass sich auch die Tangentialrippen kreuzen. Insbesondere bei einer Lösung mit zwei Gruppen und somit insgesamt sechs Befestigungspunkten erfolgt somit eine weitere Versteifung.A further development of the fan housing part also provides that the tangential ribs also intersect. In particular in the case of a solution with two groups and thus a total of six fastening points, further stiffening takes place.

Günstig ist ferner, dass bei dem Gebläsegehäuseteil jede der Radialrippen von mindestens einer Tangentialrippe gekreuzt wird.It is also favorable that in the case of the fan housing part each of the radial ribs is crossed by at least one tangential rib.

Als geometrische Ausgestaltung wird die Aufgabe besonders vorteilhaft gelöst, indem sich eine axiale Höhe der Radialrippen im Verlauf nach radial außen stetig verringert. Die Tangentialrippen weisen günstigerweise eine axiale Höhe h auf, die in einem Verhältnis zu einem direkten Abstand b zweier Befestigungspunkte stehen, dass gilt 0,2≤h/b≤0,4. Ferner ist geometrisch von Vorteil, wenn die Tangentialrippen zwischen zwei Befestigungspunkten einen bezüglich ihrer axialen Höhe ansteigenden und anschließend abfallenden Verlauf aufweisen. Ein den Übergang zwischen dem ansteigenden und abfallenden Verlauf bestimmender Scheitelpunkt weist dabei einen Radius R auf, der im Verhältnis zu dem direkten Abstand b zweier Befestigungspunkte steht, so dass gilt 0,1≤R/b≤0,3.As a geometrical embodiment, the object is achieved in a particularly advantageous manner in that an axial height of the radial ribs is steadily reduced as it extends radially outward. The tangential ribs advantageously have an axial height h which is in a relationship to a direct distance b between two fastening points, that is 0.2 h / b 0.4. It is also geometrically advantageous if the tangential ribs between two fastening points have an ascending and then descending course with respect to their axial height. A vertex determining the transition between the rising and falling course has a radius R which is in relation to the direct distance b between two fastening points, so that 0.1 R / b 0.3 applies.

Das hier beschriebene Gebläsegehäuseteil ist vorzugsweise als Diffusorgehäuse zur befestigenden Anordnung an einem Gasgebläse ausgebildet, wobei der Gehäusekörper einen Diffusor mit einer Ansaugöffnung und einem an dem Befestigungsflansch vorgesehenen Strömungsausgang zur Einströmung in das Gasgebläse bildet. Zudem wird an dem Gehäusekörper ein Brenngasanschluss vorgesehen.The fan housing part described here is preferably designed as a diffuser housing for fastening arrangement to a gas fan, the housing body having a diffuser with a suction opening and forms a flow outlet provided on the fastening flange for inflow into the gas blower. In addition, a fuel gas connection is provided on the housing body.

Andere vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet bzw. werden nachstehend zusammen mit der Beschreibung der bevorzugten Ausführung der Erfindung anhand der Figuren näher dargestellt. Es zeigen:

Fig. 1
eine axiale Draufsicht auf ein Gasgebläse mit daran befestigtem Gebläsegehäuseteil,
Fig. 2
eine perspektivische Ansicht des Gebläsegehäuseteils aus Figur 1,
Fig. 3
eine Seitenansicht des Gebläsegehäuseteils aus Figur 2.
Other advantageous developments of the invention are characterized in the subclaims or are shown in more detail below together with the description of the preferred embodiment of the invention with reference to the figures. Show it:
Fig. 1
an axial plan view of a gas blower with attached fan housing part,
Fig. 2
a perspective view of the fan housing part from Figure 1,
Fig. 3
a side view of the fan housing part Figure 2 .

In Figur 1 ist ein Gasgebläse 100 mit daran ansaugseitig fixiertem Gebläsegehäuseteil 1 ausgebildet als Diffusorgehäuse mit einer Ansaugöffnung 14 für Umgebungsluft und einem Brenngasanschluss 9.In Figure 1 For example, a gas blower 100 with a blower housing part 1 fixed to it on the suction side is designed as a diffuser housing with a suction opening 14 for ambient air and a fuel gas connection 9.

Das in den Figuren 1 - 3 dargestellte Gebläsegehäuseteil 1 umfasst den im Wesentlichen zylindrischen Gehäusekörper 2 der auf einer axialen Endseite auf einem Befestigungsflansch 3 angeordnet ist, wobei der Befestigungsflansch 3 den Gehäusekörper 2 nach radial außen überstreckt. Der Befestigungsflansch 3 ist das Bauteil, mit dem das Gebläsegehäuseteil 1 an dem Gasgebläse 100 über die als Anschraubpunkte ausgebildeten Befestigungspunkte 4 mittels Schrauben 7 fixiert wird. In Umfangsrichtung verteilt sind an dem Befestigungsflansch 3 zwei Gruppen mit jeweils drei Befestigungspunkten 4 vorgesehen, die jeweils in Umfangsrichtung in einem Winkel von 120° beabstandet sind. Die aneinander unmittelbar angrenzenden Befestigungspunkte 4 sind wiederum in einem Winkel von 30° beabstandet, so dass sich zwei um 30° gedrehte Befestigungspositionen des Gebläsegehäuseteils 1 an dem Gasgebläse 100 ergeben und realisierbar sind.That in the Figures 1 - 3 The fan housing part 1 shown comprises the essentially cylindrical housing body 2 which is arranged on an axial end side on a fastening flange 3, the fastening flange 3 extending radially outward over the housing body 2. The fastening flange 3 is the component with which the fan housing part 1 is fixed to the gas blower 100 via the fastening points 4 designed as screw-on points by means of screws 7. Distributed in the circumferential direction, two groups with three fastening points 4 each are provided on the fastening flange 3, each of which is spaced apart in the circumferential direction at an angle of 120 °. The fastening points immediately adjacent to one another 4 are again spaced at an angle of 30 °, so that two fastening positions, rotated by 30 °, of the fan housing part 1 on the gas fan 100 result and can be implemented.

Von der Mantelfläche 8 des Gehäusekörpers 2 erstreckt sich geradlinig nach radial auswärts zu jedem der Befestigungspunkte 4 eine Radialrippe 5. Zudem sind auch in Zwischenbereichen Radialrippen 5 vorgesehen, welche am radialen freien Umgebungsrand des Befestigungsflansches 3 enden. Zwischen den jeweils benachbarten Befestigungspunkten 4 der beiden Gruppen mit jeweils drei Befestigungspunkten 4 verlaufen zudem die Tangentialrippen 6 und kreuzen die Radialrippen 5. Wie in Figur 2 gut zu erkennen durchdringen sich die Radialrippen 5 und die Tangentialrippen 6 abwechselnd und enden an der jeweiligen Materialverstärkung 24 der Befestigungspunkte 4. Auch ist in Figur 2 deutlich dargestellt, dass sich die Tangentialrippen 6 untereinander ebenfalls kreuzen. Die hieraus gebildete Kreuzverrippung bietet eine hohe Steifigkeit in Radialrichtung und Tangentialrichtung.A radial rib 5 extends in a straight line radially outward from the jacket surface 8 of the housing body 2 to each of the fastening points 4. In addition, radial ribs 5 are also provided in intermediate areas, which end at the free radial surrounding edge of the fastening flange 3. The tangential ribs 6 also run between the respectively adjacent fastening points 4 of the two groups, each with three fastening points 4, and cross the radial ribs 5. As in FIG Figure 2 The radial ribs 5 and the tangential ribs 6 alternately penetrate one another and end at the respective material reinforcement 24 of the fastening points 4 Figure 2 clearly shown that the tangential ribs 6 also intersect with one another. The cross ribbing formed from this offers high rigidity in the radial and tangential directions.

Die Tangentialrippen 6 sind von dem Gehäusekörper 3 radial beabstandet und verlaufen auf den Gehäusekörper 3 tangential von dem jeweiligen Befestigungspunkt 4 zu.The tangential ribs 6 are radially spaced from the housing body 3 and run towards the housing body 3 tangentially from the respective fastening point 4.

Bezugnehmend auf Figur 3 sind die vorteilhaften geometrischen Details näher spezifiziert, wonach sich die axiale Höhe der Radialrippen 5 im Verlauf von der Mantelfläche 8 nach radial außen bis zu den Befestigungspunkten 4 stetig verringert. Die Tangentialrippen 6 weisen eine axiale Höhe h auf, die in einem Verhältnis dem direkten Abstand b zweier Befestigungspunkte 4 einer Gruppe stehen, dass gilt h/b=0,28. Das Verhältnis wird alternativ in einem Bereich von 0,2-0,4 festgelegt. Der Verlauf der Tangentialrippen 6 zwischen zwei Befestigungspunkten 4 ist gemäß der Seitenansicht bogenförmig mit einem bezüglich ihrer axialen Höhe ansteigenden und anschließend abfallenden Verlauf. Am Scheitelpunkt S liegt eine Radius R vor, der im Verhältnis zu dem direkten Abstand b zweier Befestigungspunkte 4 einer Gruppe steht, dass gilt R/b=0,2. Das Verhältnis wird alternativ in einem Bereich von 0,1-0,3 festgelegt.Referring to Figure 3 the advantageous geometric details are specified in more detail, according to which the axial height of the radial ribs 5 is steadily reduced in the course of the circumferential surface 8 radially outward to the fastening points 4. The tangential ribs 6 have an axial height h which is in a ratio to the direct distance b between two fastening points 4 of a group, that is, h / b = 0.28. Alternatively, the ratio is set in a range of 0.2-0.4. According to the side view, the course of the tangential ribs 6 between two fastening points 4 is arc-shaped with a course that rises and then falls with respect to its axial height. At the vertex S there is a radius R which is in proportion for the direct distance b between two fastening points 4 of a group it is the case that R / b = 0.2. Alternatively, the ratio is set in a range of 0.1-0.3.

Claims (15)

Gebläsegehäuseteil (1) mit einem Gehäusekörper (2) und einem sich von dem Gehäusekörper (2) nach radial außen erstreckenden Befestigungsflansch (3), an dem in Umfangsrichtung verteilt mehrere Befestigungspunkte (4) zur Befestigung des Gebläsegehäuseteils (1) angeordnet sind, wobei zwischen dem Gehäusekörper (2) und den Befestigungspunkten (4) jeweils sich radial geradlinig entlang des Befestigungsflansches (3) erstreckende Radialrippen (5) ausgebildet sind, und wobei die Radialrippen (5) von sich entlang des Befestigungsflansches (3) erstreckenden Tangentialrippen (6) gekreuzt werden, die sich jeweils zwischen zwei der Befestigungspunkte (4) tangential zu dem Gehäusekörper (2) erstrecken und die zwei Befestigungspunkte (4) jeweils verbinden.Fan housing part (1) with a housing body (2) and a fastening flange (3) which extends radially outward from the housing body (2) and on which several fastening points (4) for fastening the fan housing part (1) are arranged, distributed in the circumferential direction, between the housing body (2) and the fastening points (4) are each formed with radial ribs (5) extending in a straight line along the fastening flange (3), and wherein the radial ribs (5) are crossed by tangential ribs (6) extending along the fastening flange (3) which each extend between two of the fastening points (4) tangentially to the housing body (2) and each connect the two fastening points (4). Gebläsegehäuseteil nach Anspruch 1, dadurch gekennzeichnet, dass die Tangentialrippen (6) radial beabstandet zu dem Gehäusekörper (2) verlaufen.Fan housing part according to Claim 1, characterized in that the tangential ribs (6) run at a radial distance from the housing body (2). Gebläsegehäuseteil nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sich die Tangentialrippen (6) in einer axialen Draufsicht gesehen tangential zu dem und abschnittsweise um den Gehäusekörper (2) erstrecken.Fan housing part according to claim 1 or 2, characterized in that the tangential ribs (6), seen in an axial plan view, extend tangentially to and in sections around the housing body (2). Gebläsegehäuseteil nach einem der vorigen Ansprüche, dadurch gekennzeichnet, dass jede der Radialrippen (5) von mindestens einer Tangentialrippe (6) gekreuzt wird.Fan housing part according to one of the preceding claims, characterized in that each of the radial ribs (5) is crossed by at least one tangential rib (6). Gebläsegehäuseteil nach einem der vorigen Ansprüche, dadurch gekennzeichnet, dass die Radialrippen (5) und die Tangentialrippen (6) sich in Umfangsrichtung gesehen abwechselnd gegenseitig durchdringen.Fan housing part according to one of the preceding claims, characterized in that the radial ribs (5) and the tangential ribs (6) alternately penetrate one another, viewed in the circumferential direction. Gebläsegehäuseteil nach einem der vorigen Ansprüche, dadurch gekennzeichnet, dass mindestens drei Befestigungspunkte (4) vorgesehen sind, die in Umfangsrichtung in einem 120°-Abstand zueinander an einem radialen Außenrand des Befestigungsflansches (3) angeordnet sind.Fan housing part according to one of the preceding claims, characterized in that at least three fastening points (4) are provided, which are arranged in the circumferential direction at a distance of 120 ° from one another on a radial outer edge of the fastening flange (3). Gebläsegehäuseteil nach dem vorigen Anspruch, dadurch gekennzeichnet, dass zwei Gruppen von Befestigungspunkten (4) mit jeweils drei in in Umfangsrichtung um 120° beabstandeter Anordnung vorgesehen sind.Fan housing part according to the previous claim, characterized in that two groups of fastening points (4) are provided, each with three in an arrangement spaced apart by 120 ° in the circumferential direction. Gebläsegehäuseteil nach dem vorigen Anspruch, dadurch gekennzeichnet, dass jeweils zwei der benachbarten Befestigungspunkte (4) in einem Winkelabstand von 30° in Umfangsrichtung zueinander angeordnet sind.Fan housing part according to the previous claim, characterized in that two of the adjacent fastening points (4) are arranged at an angular distance of 30 ° from one another in the circumferential direction. Gebläsegehäuseteil nach einem der vorigen Ansprüche, dadurch gekennzeichnet, dass sich die Tangentialrippen (6) kreuzen.Fan housing part according to one of the preceding claims, characterized in that the tangential ribs (6) intersect. Gebläsegehäuseteil nach einem der vorigen Ansprüche, dadurch gekennzeichnet, dass jede der Radialrippen (5) von mindestens einer Tangentialrippe (6) gekreuzt wird.Fan housing part according to one of the preceding claims, characterized in that each of the radial ribs (5) is crossed by at least one tangential rib (6). Gebläsegehäuseteil nach einem der vorigen Ansprüche, dadurch gekennzeichnet, dass sich eine axiale Höhe der Radialrippen (5) im Verlauf nach radial außen stetig verringert.Fan housing part according to one of the preceding claims, characterized in that an axial height of the radial ribs (5) continuously decreases as it extends radially outward. Gebläsegehäuseteil nach einem der vorigen Ansprüche, dadurch gekennzeichnet, dass die Tangentialrippen (6) eine axiale Höhe h aufweisen, die in einem Verhältnis zu einem direkten Abstand b zweier Befestigungspunkte (4) stehen, dass gilt 0,2≤h/b≤0,4.Fan housing part according to one of the preceding claims, characterized in that the tangential ribs (6) have an axial height h which is in a relationship to a direct distance b between two fastening points (4), that is 0.2 ≤ h / b 0, 4th Gebläsegehäuseteil nach einem der vorigen Ansprüche, dadurch gekennzeichnet, dass die Tangentialrippen (6) zwischen zwei Befestigungspunkten (4) einen bezüglich ihrer axialen Höhe ansteigenden und anschließend abfallenden Verlauf aufweisen, wobei ein den Übergang zwischen dem ansteigenden und abfallenden Verlauf bestimmende Scheitelpunkt (S) einen Radius R aufweist, der im Verhältnis zu einem direkten Abstand b zweier Befestigungspunkte (4) steht, dass gilt 0,1≤R/b≤0,3.Fan housing part according to one of the preceding claims, characterized in that that the tangential ribs (6) between two fastening points (4) have an ascending and then descending course with respect to their axial height, with an apex (S) determining the transition between the rising and falling course having a radius R which is in relation to a direct Distance b between two fastening points (4) indicates that 0.1 R / b 0.3 applies. Gebläsegehäuseteil nach einem der vorigen Ansprüche, dadurch gekennzeichnet, dass es als Diffusorgehäuse zur befestigenden Anordnung an einem Gasgebläse (100) ausgebildet ist, wobei der Gehäusekörper (2) einen Diffusor mit einer Ansaugöffnung (14) und einem an dem Befestigungsflansch (3) vorgesehenen Strömungsausgang zur Einströmung in das Gasgebläse (100) bildet.Fan housing part according to one of the preceding claims, characterized in that it is designed as a diffuser housing to be fastened to a gas blower (100), the housing body (2) being a diffuser with a suction opening (14) and a flow outlet provided on the fastening flange (3) forms for the flow into the gas blower (100). Gasgebläse (100) mit einem Gebläsegehäuseteil (1) nach einem der vorigen Ansprüche.Gas blower (100) with a blower housing part (1) according to one of the preceding claims.
EP20170151.3A 2019-06-11 2020-04-17 Stiffened fan housing part for use in a gas blower Active EP3751151B1 (en)

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EP3417174A1 (en) * 2016-02-15 2018-12-26 Pierburg Pump Technology GmbH Automotive electrical coolant pump

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DE102019115741A1 (en) 2020-12-17
US11572892B2 (en) 2023-02-07
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EP3751151B1 (en) 2023-03-15
US20200392969A1 (en) 2020-12-17

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