EP0582140A1 - Fan casing - Google Patents

Fan casing Download PDF

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Publication number
EP0582140A1
EP0582140A1 EP93111743A EP93111743A EP0582140A1 EP 0582140 A1 EP0582140 A1 EP 0582140A1 EP 93111743 A EP93111743 A EP 93111743A EP 93111743 A EP93111743 A EP 93111743A EP 0582140 A1 EP0582140 A1 EP 0582140A1
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EP
European Patent Office
Prior art keywords
side parts
tabs
edge
fan housing
bent
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
EP93111743A
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German (de)
French (fr)
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EP0582140B1 (en
Inventor
Heinz Wengrzik
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.)
Elektrobau Mulfingen and Co EBM GmbH
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Elektrobau Mulfingen and Co EBM GmbH
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Publication of EP0582140A1 publication Critical patent/EP0582140A1/en
Application granted granted Critical
Publication of EP0582140B1 publication Critical patent/EP0582140B1/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—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

Definitions

  • the present invention relates to a fan housing, consisting of mutually opposite side parts and a housing shell which connects them and is arranged on their circumference, on the longitudinal sides of which tabs are formed which are bent by approximately 90 ° in such a way that they run parallel to the side parts and rest against them and the side parts each have at their edge connected to the housing shell an approximately 90 ° bent towards the inside of the housing, surrounding the edge of the housing shell edge web.
  • Such a fan housing is known from DE-OS 40 04 069.
  • the tabs connected to the edges of the housing jacket are inserted through slots in the side parts and then bent parallel to the surface of the side parts. Due to this construction, there are gaps in the passage area of the tabs through which air can pass, which can result in pressure losses in the fan housing.
  • the present invention has for its object to provide a fan housing that is simple and inexpensive to manufacture and that has improved tightness owns.
  • the tabs consist of a leg running parallel to the side parts and a base leg protruding from the outer surface, approximately parallel to this, so that a gap is formed between the base legs and the outer surface through which the edge web runs.
  • the tabs in the area of the base legs are designed as a free cut bent out of the housing jacket.
  • the edge web thus encompasses the housing jacket in the area of the recesses in the area of the two jacket edges formed by the shaping of the tabs and covers these openings, so that the formation of gaps is largely avoided. This improves the tightness of the fan housing according to the invention.
  • a fan housing consists of two opposite side parts 1, 2 with an air inlet in one of the side parts and a housing jacket 3, which is arranged on the circumference of the side parts 1, 2.
  • a drive motor is connected to the fan housing (not shown), which can either be attached via a flange connection to the outside of the one side part 1 opposite the inlet side or is mounted in the interior of the fan housing. If the attachment is on the outside, an extended shaft end extends through an opening in the side part and carries a fan wheel inside the housing. In the other case, the fan wheel is attached directly to the rotor of an external rotor motor.
  • the side parts 1, 2 each have, at their edge connected to the housing shell 3, an edge web 4 which is bent by approximately 90 ° in the direction of the inside of the housing and surrounds the edge of the housing shell 3 , which is formed approximately tangentially on one side of the fan housing.
  • tabs 7 are formed in the area of the longitudinal edges of the housing shell, with which a connection is made between the housing shell 3 and the two side parts 1, 2.
  • These tabs 7 are designed in accordance with the present invention in such a way that they have a base leg 8 and a leg 9 which is bent approximately at right angles to the side parts 1, 2, the base leg 8 being bent out of the lateral surface in such a way that it protrudes therefrom and runs parallel to it.
  • the length of the base leg 8 preferably corresponds to the width of the edge webs 4.
  • the tabs 7 are formed in that they are formed in the region of the base legs 8 as a free cut bent out of the housing jacket 3.
  • the tabs 7 are an integral part of the housing shell 3.
  • the edge web 4 of the side parts 1, 2 encompasses the housing shell 3 circumferentially and through that between the base legs 8 and the surface of the housing shell 3 formed gap runs through, achieved that the resulting by cutting the base leg 8 recess is completely covered.
  • the housing interior is closed in the area of the tabs 7, so that a gap-free closure of the housing is achieved.
  • embossments 11 are formed in the side parts 1, 2 in the region of the bent legs 9 are, whose depth corresponds approximately to the material thickness of the tabs 7, so that the bent base legs 8 do not protrude relative to the side parts 1, 2.
  • Such training is known per se in sheet metal forming technology, for which reference can be made, for example, to German utility model 18 63 413.
  • reference can also be made, for example, to Japanese Patent Application 1-177499.
  • the housing according to the invention expediently consists of three individual sheet metal parts which are joined together to form the housing in that first the two side parts 1, 2 are pushed laterally onto the housing shell and then the tabs 7 are bent with their end regions parallel to the side parts into the impressions 11 be, whereby a counter-fastening of the housing parts takes place.
  • FIG. 3 shows a preferred embodiment of the invention.
  • This fan housing differs from the embodiment of FIG. 1 in that an improved positioning of the side parts 1, 2 relative to the jacket 3 is possible.
  • the edge web 4 of each side part 1, 2 in the area of the tabs 7 is provided at its free end with a cutout 20 which is produced by punching and whose depth corresponds approximately to the material thickness of the tab 7.
  • the tabs are positioned in the cutouts, so that twisting of the side parts during assembly is prevented until the legs 9 bend.
  • the jacket 3 in the area of the tabs 7 also has a punched-out 21, as shown in FIG. 4.
  • the die cut takes place in the area of each tab 7 and extends on both sides of the same over a slightly larger width than the embossments 11 in the side parts 1, 2, as shown in FIG. 2 and FIG. 3.
  • This punched out causes the peripheral edge 22 of the jacket 3 in its entire edge area lies close to the side parts and thus ensures improved stability on the one hand and increased tightness of the fan housing on the other.

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

Abstract

Fan casing, consisting of mutually opposite side parts (1, 2) and a casing jacket (3) which connects these and is arranged on their circumference and on the longitudinal sides of which tabs (7) are designed, which are bent over approximately by 90 DEG in such a manner that they run parallel to the side parts (1, 2) bearing against these, the side parts (1, 2) having in each case on their edge connected to the casing jacket (3) an edge web (4) which is bent off by approximately 90 DEG in the direction of the housing inside and grips around the edge of the casing jacket (3), the tabs (7) consisting of a leg running parallel to the side parts (1, 2) and a base leg (8) which projects from the jacket surface and runs approximately parallel to this, so that in each case a gap is formed between the base legs (8) and the surface of the casing jacket (3), through which the edge web (4) runs. <IMAGE>

Description

Die vorliegende Erfindung betrifft ein Lüftergehäuse, bestehend aus einander gegenüberliegenden Seitenteilen und einem diese verbindenden, an ihrem Umfang angeordneten Gehäusemantel, an dessen Längsseiten Laschen ausgebildet sind, die etwa um 90° derart umgebogen sind, daß sie parallel zu den Seitenteilen unter Anlage an diesen verlaufen und wobei die Seitenteile jeweils an ihrem mit dem Gehäusemantel verbundenen Rand einen um ca. 90° in Richtung auf die Gehäuseinnenseite abgebogenen, den Rand des Gehäusemantels umgreifenden Randsteg besitzen.The present invention relates to a fan housing, consisting of mutually opposite side parts and a housing shell which connects them and is arranged on their circumference, on the longitudinal sides of which tabs are formed which are bent by approximately 90 ° in such a way that they run parallel to the side parts and rest against them and the side parts each have at their edge connected to the housing shell an approximately 90 ° bent towards the inside of the housing, surrounding the edge of the housing shell edge web.

Ein derartiges Lüftergehäuse ist aus der DE-OS 40 04 069 bekannt. Bei diesem bekannten Lüftergehäuse werden die mit den Rändern des Gehäusemantels verbundenen Laschen durch Schlitze in den Seitenteilen hindurchgesteckt und danach parallel zur Oberfläche der Seitenteile umgebogen. Aufgrund dieser Konstruktion ergeben sich im Durchtrittsbereich der Laschen Spalte, durch die Luft hindurchtreten kann, wodurch Druckverluste im Lüftergehäuse entstehen können.Such a fan housing is known from DE-OS 40 04 069. In this known fan housing, the tabs connected to the edges of the housing jacket are inserted through slots in the side parts and then bent parallel to the surface of the side parts. Due to this construction, there are gaps in the passage area of the tabs through which air can pass, which can result in pressure losses in the fan housing.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Lüftergehäuse zu schaffen, das einfach und kostengünstig herstellbar ist und das eine verbesserte Dichtigkeit besitzt.The present invention has for its object to provide a fan housing that is simple and inexpensive to manufacture and that has improved tightness owns.

Erfindungsgemäß wird dies dadurch erreicht, daß die Laschen aus einem parallel zu den Seitenteilen verlaufenden Schenkel bestehen und einem aus der Mantelfläche vorstehenden, etwa parallel zu dieser verlaufenden Basisschenkel, so daß zwischen den Basisschenkeln und der Manteloberfläche jeweils ein Spalt gebildet ist, durch den der Randsteg verläuft.According to the invention this is achieved in that the tabs consist of a leg running parallel to the side parts and a base leg protruding from the outer surface, approximately parallel to this, so that a gap is formed between the base legs and the outer surface through which the edge web runs.

Hierbei kann es erfindungsgemäß weiterhin zweckmäßig sein, wenn die Laschen im Bereich der Basisschenkel als aus dem Gehäusemantel herausgebogener Freischnitt ausgebildet sind. Gemäß der Erfindung erfaßt somit der Randsteg umfangsgemäß den Gehäusemantel auch im Bereich der durch die Ausformung der Laschen entstandenen Ausnehmungen im Bereich der beiden Mantelränder und deckt diese Ausnehmungen ab, so daß Spaltbildungen weitestgehend vermieden werden. Hierdurch wird die Dichtigkeit des erfindungemäßen Lüftergehäuses verbessert.It can furthermore be expedient according to the invention if the tabs in the area of the base legs are designed as a free cut bent out of the housing jacket. According to the invention, the edge web thus encompasses the housing jacket in the area of the recesses in the area of the two jacket edges formed by the shaping of the tabs and covers these openings, so that the formation of gaps is largely avoided. This improves the tightness of the fan housing according to the invention.

Vorteilhafte Ausbildungen der Erfindung sind in den Unteransprüchen enthalten und anhand des in den beiliegenden Zeichnungen dargestellten Ausführungsbespiels wird die Erfindung näher erläutert.Advantageous embodiments of the invention are contained in the subclaims and the invention is explained in more detail with reference to the exemplary embodiment shown in the accompanying drawings.

Es zeigen:

Fig. 1
eine Frontansicht auf ein erfindungsgemäßes Lüftergehäuse,
Fig. 2
eine der Einlaßseite abgewandte Seitenansicht des Lüftergehäuses gemäß Fig. 1,
Fig. 3
eine Frontansicht einer bevorzugten Ausführungsform des Lüftergehäuses,
Fig. 4
eine Aufsicht auf den Mantel des Lüftergehäuses nach Fig. 3 im Bereich einer Lasche und
Fig. 5
einen Schnitt entlang der Schnittlinie V-V in Fig. 2.
Show it:
Fig. 1
2 shows a front view of a fan housing according to the invention,
Fig. 2
2 shows a side view of the fan housing according to FIG. 1 facing away from the inlet side,
Fig. 3
a front view of a preferred embodiment of the fan housing,
Fig. 4
a view of the jacket of the fan housing according to FIG. 3 in the region of a tab and
Fig. 5
3 shows a section along the section line VV in FIG. 2.

Wie aus Fig. 1 zu erkennen ist, besteht ein erfindungsgemäßes Lüftergehäuse aus zwei einander gegenüberliegenden Seitenteilen 1, 2 mit einem Lufteinlaß in einem der Seitenteile sowie aus einem Gehäusemantel 3, der an dem Umfang der Seitenteile 1, 2 angeordnet ist. Außerdem ist mit dem Lüftergehäuse ein Antriebsmotor verbunden (nicht dargestellt), der entweder über eine Flanschverbindung an der der Einlaßseite gegenüberliegenden Außenseite des einen Seitenteils 1 angebracht sein kann oder im Innenraum des Lüftergehäuses montiert ist. Erfolgt die Befestigung auf der Außenseite, dann durchgreift ein verlängertes Wellenende eine Öffnung im Seitenteil und trägt im Innern des Gehäuses ein Lüfterrad. Im anderen Fall ist das Lüfterrad direkt auf dem Rotor eines Außenläufermotors befestigt. Die Seitenteile 1, 2 besitzen jeweils an ihrem mit dem Gehäusemantel 3 verbundenen Rand einen um ca. 90° in Richtung auf die Gehäuseinnenseite abgebogenen, den Rand des Gehäusemantels 3 umgreifenden Randsteg 4. Weiterhin besitzt das erfindungsgemäße Lüfergehäuse eine Ausblasöffnung 5 im Bereich eines Stutzens 6, der etwa tangential einseitig an das Lüftergehäuse angeformt ist.As can be seen from Fig. 1, a fan housing according to the invention consists of two opposite side parts 1, 2 with an air inlet in one of the side parts and a housing jacket 3, which is arranged on the circumference of the side parts 1, 2. In addition, a drive motor is connected to the fan housing (not shown), which can either be attached via a flange connection to the outside of the one side part 1 opposite the inlet side or is mounted in the interior of the fan housing. If the attachment is on the outside, an extended shaft end extends through an opening in the side part and carries a fan wheel inside the housing. In the other case, the fan wheel is attached directly to the rotor of an external rotor motor. The side parts 1, 2 each have, at their edge connected to the housing shell 3, an edge web 4 which is bent by approximately 90 ° in the direction of the inside of the housing and surrounds the edge of the housing shell 3 , which is formed approximately tangentially on one side of the fan housing.

Wie weiterhin insbesondere in Verbindung mit Fig. 2 zu erkennen ist, sind im Bereich der Längsränder des Gehäusemantels 3 Laschen 7 ausgebildet, mit denen eine Verbindung zwischen dem Gehäusemantel 3 und den beiden Seitenteilen 1,2 erfolgt. Diese Laschen 7 sind entsprechend der vorliegenden Erfindung derart ausgebildet, daß sie einen Basisschenkel 8 und einen hierzu etwa rechtwinklig abgebogenen zu den Seitenteilen 1, 2 parallel verlaufenden Schenkel 9 besitzen, wobei der Basisschenkel 8 derart aus der Mantelfläche herausgebogen ist, daß er gegenüber dieser vorsteht und parallel zu dieser verläuft. Die Länge des Basisschenkels 8 entspricht vorzugsweise der Breite der Randstege 4. Zwischen der Mantelfläche des Gehäusemantels 3 und den Basisschenkeln 8 ergibt sich ein Spalt 10, dessen Höhe vorzugsweise der Dicke der Randstege 4 angepaßt ist. Die vorstehende Ausbildung ist insbesondere in Fig. 5 zu erkennen. Hierbei sind die Laschen 7 dadurch gebildet, daß sie im Bereich der Basisschenkel 8 als aus dem Gehäusemantel 3 herausgebogener Freischnitt ausgebildet sind. Somit sind die Laschen 7 einstückiger Bestandteil des Gehäusemantels 3. Wie sich aus Fig. 5 ergibt, wird dadurch, daß erfindungsgemäß der Randsteg 4 der Seitenteile 1, 2 jeweils umfangsgemäß den Gehäusemantel 3 umfaßt und durch den zwischen den Basisschenkeln 8 und der Oberfläche des Gehäusemantels 3 gebildeten Spalt hindurch verläuft, erreicht, daß die sich durch den Freischnitt des Basisschenkels 8 ergebende Ausnehmung vollständig abgedeckt wird. Somit wird der Gehäuseinnenraum im Bereich der Laschen 7 verschlossen, so daß ein spaltfreier Verschluß des Gehäuses erzielt wird.As can also be seen in particular in connection with FIG. 2, 3 tabs 7 are formed in the area of the longitudinal edges of the housing shell, with which a connection is made between the housing shell 3 and the two side parts 1, 2. These tabs 7 are designed in accordance with the present invention in such a way that they have a base leg 8 and a leg 9 which is bent approximately at right angles to the side parts 1, 2, the base leg 8 being bent out of the lateral surface in such a way that it protrudes therefrom and runs parallel to it. The length of the base leg 8 preferably corresponds to the width of the edge webs 4. Between the outer surface of the housing shell 3 and the base legs 8 there is a gap 10, the height of which is preferably adapted to the thickness of the edge webs 4. The above formation can be seen in particular in FIG. 5. Here, the tabs 7 are formed in that they are formed in the region of the base legs 8 as a free cut bent out of the housing jacket 3. Thus, the tabs 7 are an integral part of the housing shell 3. As can be seen from FIG. 5, the fact that, according to the invention, the edge web 4 of the side parts 1, 2 encompasses the housing shell 3 circumferentially and through that between the base legs 8 and the surface of the housing shell 3 formed gap runs through, achieved that the resulting by cutting the base leg 8 recess is completely covered. Thus, the housing interior is closed in the area of the tabs 7, so that a gap-free closure of the housing is achieved.

Weiterhin ist zu erkennen, daß im Bereich der umgebogenen Schenkel 9 in den Seitenteilen 1, 2 Einprägungen 11 ausgebildet sind, deren Tiefe etwa der Materialstärke der Laschen 7 entspricht, so daß die umgebogenen Basisschenkel 8 gegenüber den Seitenteilen 1, 2 nicht vorstehen. Eine derartige Ausbildung ist in der Blechverformungstechnik an sich bekannt, wozu beispielsweise auf das deutsche Gebrauchsmuster 18 63 413 verwiesen werden kann. Was die Verbindung von Gehäuseseitenteilen mit dem Mantel durch Laschen betrifft, so kann beispielsweise auch auf die japanische Patentanmeldung 1-177499 verwiesen werden.It can also be seen that embossments 11 are formed in the side parts 1, 2 in the region of the bent legs 9 are, whose depth corresponds approximately to the material thickness of the tabs 7, so that the bent base legs 8 do not protrude relative to the side parts 1, 2. Such training is known per se in sheet metal forming technology, for which reference can be made, for example, to German utility model 18 63 413. With regard to the connection of housing side parts to the casing by means of tabs, reference can also be made, for example, to Japanese Patent Application 1-177499.

Das erfindungsgemäße Gehäuse besteht zweckmäßigerweise aus drei einzelnen Blechteilen, die zu dem Gehäuse dadurch zusammengefügt werden, daß zunächst die beiden Seitenteile 1, 2 seitlich auf den Gehäusemantel aufgeschoben werden und danach die Laschen 7 mit ihren Endbereichen parallel zu den Seitenteilen in die Einprägungen 11 hinein umgebogen werden, wodurch eine gegenseite Befestigung der Gehäuseteile erfolgt.The housing according to the invention expediently consists of three individual sheet metal parts which are joined together to form the housing in that first the two side parts 1, 2 are pushed laterally onto the housing shell and then the tabs 7 are bent with their end regions parallel to the side parts into the impressions 11 be, whereby a counter-fastening of the housing parts takes place.

Die Fig. 3 zeigt ein bevorzugtes Ausführungsbeispiel der Erfindung. Dieses Lüftergehäuse unterscheidet sich vom Ausführungsbeispiel nach Fig. 1 dadurch, daß eine verbesserte Positionierung der Seitenteile 1, 2 gegenüber dem Mantel 3 möglich wird. Hierzu ist der Randsteg 4 jedes Seitenteils 1, 2 im Bereich der Laschen 7 an seinem freien Ende mit einer durch Ausstanzung hervorgerufenen Aussparung 20 versehen, deren Tiefe etwa der Materialstärke der Lasche 7 entspricht. Beim Zusammenfügen der Teile werden die Laschen in den Aussparungen positioniert, so daß ein Verdrehen der Seitenteile bei der Montage bis zum Umbiegen der Schenkel 9 verhindert wird. Des weiteren weist der Mantel 3 im Bereich der Laschen 7 ebenfalls eine Ausstanzung 21 auf, wie sie in Fig. 4 dargestellt ist. Die Ausstanzung erfolgt im Bereich jeder Lasche 7 und erstreckt sich beidseitig desselben über eine geringfügig größere Breite als die Einprägungen 11 in den Seitenteilen 1, 2, gemäß Fig. 2 bzw. Fig. 3. Diese Ausstanzung bewirkt, daß der umlaufende Rand 22 des Mantels 3 in seinem gesamten Randbereich dicht an den Seitenteilen anliegt und so zum einen für eine verbesserte Stabilität und zum anderen für eine erhöhte Dichtheit des Lüftergehäuses sorgt.3 shows a preferred embodiment of the invention. This fan housing differs from the embodiment of FIG. 1 in that an improved positioning of the side parts 1, 2 relative to the jacket 3 is possible. For this purpose, the edge web 4 of each side part 1, 2 in the area of the tabs 7 is provided at its free end with a cutout 20 which is produced by punching and whose depth corresponds approximately to the material thickness of the tab 7. When the parts are joined together, the tabs are positioned in the cutouts, so that twisting of the side parts during assembly is prevented until the legs 9 bend. Furthermore, the jacket 3 in the area of the tabs 7 also has a punched-out 21, as shown in FIG. 4. The die cut takes place in the area of each tab 7 and extends on both sides of the same over a slightly larger width than the embossments 11 in the side parts 1, 2, as shown in FIG. 2 and FIG. 3. This punched out causes the peripheral edge 22 of the jacket 3 in its entire edge area lies close to the side parts and thus ensures improved stability on the one hand and increased tightness of the fan housing on the other.

Claims (8)

Lüftergehäuse, bestehend aus einander gegenüberliegenden Seitenteilen (1, 2) und einem diese verbindenden, an ihrem Umfang angeordneten Gehäusemantel (3), an dessen Längsseiten Laschen (7) ausgebildet sind, die etwa um 90° derart umgebogen sind, daß sie parallel zu den Seitenteilen (1, 2) unter Anlage an diesen verlaufen, wobei die Seitenteile (1, 2) jeweils an ihrem mit dem Gehäusemantel (3) verbundenen Rand einen um ca. 90° in Richtung auf die Gehäuseinnenseite abgebogenen, den Rand des Gehäusemantels (3) umgreifenden Randsteg (4) besitzen,
dadurch gekennzeichnet, daß die Laschen (7) aus einem parallel zu den Seitenteilen (1, 2) verlaufenden Schenkel bestehen und einem von der Mantelfläche vorstehenden, etwa parallel zu dieser verlaufenden Basisschenkel (8), so daß zwischen den Basisschenkeln (8) und der Oberfläche des Gehäusemantels (3) jeweils ein Spalt (10) gebildet ist, durch den der Randsteg (4) verläuft.Fan housing, consisting of mutually opposite side parts (1, 2) and a connecting this, arranged on its circumference housing shell (3), on the long sides of which tabs (7) are formed, which are bent approximately 90 ° in such a way that they are parallel to the The side parts (1, 2) rest against them, the side parts (1, 2) each having an edge bent by approx. 90 ° towards the inside of the housing at their edge connected to the housing shell (3), the edge of the housing shell (3 ) have a peripheral web (4),
characterized in that the tabs (7) consist of a leg extending parallel to the side parts (1, 2) and a base leg (8) projecting from the lateral surface, approximately parallel to this, so that between the base legs (8) and the A gap (10) is formed through the surface of the housing shell (3), through which the edge web (4) runs. Lüftergehäuse nach Anspruch 1,
dadurch gekennzeichnet, daß die Laschen (7) im Bereich der Basisschenkel (8) als aus dem Gehäusemantel (3) herausgebogener Freischnitt ausgebildet sind.Fan housing according to claim 1,
characterized in that the tabs (7) in the region of the base legs (8) are designed as a free cut bent out of the housing jacket (3). Lüftergehäuse nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß in den Seitenteilen (1, 2) im Bereich der umgebogenen Schenkel (9) Einprägungen (11) zur Aufnahme der Schenkel (9) ausgebildet sind.Fan housing according to claim 1 or 2,
characterized in that impressions (11) for receiving the legs (9) are formed in the side parts (1, 2) in the region of the bent legs (9). Lüftergehäuse nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß die Länge der Basisschenkel (8) der Breite der Randstege (4) entspricht.Fan housing according to one of claims 1 to 3,
characterized in that the length of the base legs (8) corresponds to the width of the edge webs (4). Lüftergehäuse nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, daß die Höhe des Spaltes (10) etwa der Dicke der Randstege (4) entspricht.Fan housing according to one of claims 1 to 4,
characterized in that the height of the gap (10) corresponds approximately to the thickness of the edge webs (4). Lüftergehäuse nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, daß der Randsteg (4) jedes Seitenteils (1, 2) im Bereich der Laschen (7) an seinem freien Ende eine insbesondere durch Stanzen hergestellte Aussparung (20) aufweist.Fan housing according to one of claims 1 to 5,
characterized in that the edge web (4) of each side part (1, 2) in the area of the tabs (7) has at its free end a recess (20), in particular produced by stamping. Lüftergehäuse nach Anspruch 6,
dadurch gekennzeichnet, daß die Tiefe der Aussparung (20) der Materialstärke der Lasche (7) entspricht.Fan housing according to claim 6,
characterized in that the depth of the recess (20) corresponds to the material thickness of the tab (7). Lüftergehäuse nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, daß der Mantel (3) im Bereich der Laschen (7) randseitig offene Ausnehmungen (21) aufweist, deren Breite größer/gleich der Breite der Einprägungen (11) in den Seitenteilen (1, 2) ist.Fan housing according to one of claims 1 to 7,
characterized in that the jacket (3) in the area of the tabs (7) has open-sided recesses (21) whose width is greater than / equal to the width of the embossments (11) in the side parts (1, 2).
EP93111743A 1992-07-28 1993-07-22 Fan casing Expired - Lifetime EP0582140B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4224848A DE4224848A1 (en) 1992-07-28 1992-07-28 Fan housing
DE4224848 1992-07-28

Publications (2)

Publication Number Publication Date
EP0582140A1 true EP0582140A1 (en) 1994-02-09
EP0582140B1 EP0582140B1 (en) 1995-12-06

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EP93111743A Expired - Lifetime EP0582140B1 (en) 1992-07-28 1993-07-22 Fan casing

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EP (1) EP0582140B1 (en)
DE (2) DE4224848A1 (en)
ES (1) ES2081169T3 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1863413U (en) * 1962-07-10 1962-12-06 Telefonbau & Normalzeit Gmbh DEVICE FOR CONNECTING TWO OVER-ONE SHEET METALS OR SHEET ENDS.
GB2140085A (en) * 1983-05-18 1984-11-21 Seeley F F Nominees Centrifugal fan volute
US4787818A (en) * 1987-07-27 1988-11-29 Jenn Industries, Inc. Centrifugal blower assembly
EP0442293A1 (en) * 1990-02-12 1991-08-21 Alcatel SEL Aktiengesellschaft Fan casing
GB2251893A (en) * 1991-01-18 1992-07-22 Sullivan John T Volute housing for fan or blower

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1863413U (en) * 1962-07-10 1962-12-06 Telefonbau & Normalzeit Gmbh DEVICE FOR CONNECTING TWO OVER-ONE SHEET METALS OR SHEET ENDS.
GB2140085A (en) * 1983-05-18 1984-11-21 Seeley F F Nominees Centrifugal fan volute
US4787818A (en) * 1987-07-27 1988-11-29 Jenn Industries, Inc. Centrifugal blower assembly
EP0442293A1 (en) * 1990-02-12 1991-08-21 Alcatel SEL Aktiengesellschaft Fan casing
GB2251893A (en) * 1991-01-18 1992-07-22 Sullivan John T Volute housing for fan or blower

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 13, no. 455 (M-879)(3803) 13. Oktober 1989 & JP-A-11 77 499 ( MATSUSHITA ELECTRIC ) *

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DE4224848A1 (en) 1994-02-03
ES2081169T3 (en) 1996-02-16
EP0582140B1 (en) 1995-12-06
DE59301086D1 (en) 1996-01-18

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