EP1388669A1 - Ventilatorgehäuse für Radialventilatoren und Verfahren zur Herstellung von Ventilatorgehäusen - Google Patents
Ventilatorgehäuse für Radialventilatoren und Verfahren zur Herstellung von Ventilatorgehäusen Download PDFInfo
- Publication number
- EP1388669A1 EP1388669A1 EP03013893A EP03013893A EP1388669A1 EP 1388669 A1 EP1388669 A1 EP 1388669A1 EP 03013893 A EP03013893 A EP 03013893A EP 03013893 A EP03013893 A EP 03013893A EP 1388669 A1 EP1388669 A1 EP 1388669A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- side walls
- radial
- groove
- fan
- 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
Links
Images
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
-
- 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
Definitions
- the present invention relates to a fan housing for Centrifugal fans and a method for producing such fan housings.
- Centrifugal fans are known in which the fan housing from two essentially radially oriented side walls is formed.
- the sidewalls are essentially designed circular, with an outlet opening to predominantly tangential derivation of a fluid flow from an in Fan wheel arranged inside the radial fan is.
- a radial housing extends axially between the two side walls. It prevails on one of the two defined the axial connecting line between the side walls Edges of the outlet opening, leads, essentially tangentially aligned to the fan wheel, wraps around the fan wheel at a predetermined radial distance and leads on the other hand through the axial connecting line between the Side walls defined edges of the outlet opening.
- the radial housing has for attachment to the side walls a radially aligned fold on both sides, each is in contact with one of the two side walls, whereby for fastening at regular intervals, e.g. Spot welds are provided. Furthermore, it can be provided be that at least at the ends of the radial housing that in the calculation of the outlet opening of the radial housing Securing the attachment of the radial housing to the side walls a screw or rivet connection is formed.
- Fan housings of this type are found, in particular, in large fans Application, such as in heating and Ventilation, especially for industrial ventilation Systems and buildings as well as air conditioning systems, in particular building air conditioning systems, be used.
- Such fans have outside diameters in the order of 10cm to 2m and more on.
- a flat housing is used to produce such a fan housing Web material supplied, the right-angled from the The fold-over fold is formed. It is about the prefabricated pre-positioned sidewalls rolled up the side walls around the central axis of the radial fan accordingly pivoted around the feed of the web material become.
- To set the joining points by spot welding each a stop of approx. 2.5 to 4 seconds in the feed of the Web material required, covering the circumference of the housing in the order of 13 to 17 joining points are. A continuous feed is therefore not possible. Due to the required holding times, the required manufacturing time compared to a possible continuous manufacturing process elevated.
- a disadvantage of known fan housings is that the joint between the radial housing and the side walls is not designed to be fluid-tight. Between the set Welding or joining points can result in narrow gaps, through which fluid can escape. It can also be undesirable Flow noises arise.
- the object of the present invention is a fan housing and to create a process for its production, which is a largely continuous supply of the radial housing forming web material.
- a fan housing according to the invention essentially has two radially aligned, spaced apart Sidewalls. Extends between the side walls there is a radial housing, one inside the fan housing radially surrounding rotor of the radial fan and opens into an outlet opening. According to the invention the radial housing has marginal grooves. each Side wall dips into a groove with its outer edge, see above that the side wall of radially aligned groove wall sections of the radial housing. The radial housing is due to gluing in the area of the grooves on the side walls attached.
- the adhesive connection can be in a continuous Process generated, an interruption of the material feed during the creation of an adhesive connection not necessary.
- the cut edge the side wall which is obtained by cutting or punching the side wall is made of flat material, and which has sharp edges and can be easily cut, held in the groove and includes. This protects against cuts on this side edge, so that any post-processing that may be required the side edge can be omitted.
- a fan housing according to the invention can be seen in that by gluing side walls and radial housing the vibration bridge between the mostly made of sheet metal and the from the same material formed radial housing is interrupted.
- the natural frequency of the Fan housing by gluing in a cheaper Area is relocated. Vibrations and vibration transmission can then be reduced in the audible frequency range.
- one is continuous continuous, one-piece adhesive bead in the groove educated.
- An advantage of such an adhesive connection is that the cavity in the groove in which there is water and moisture could collect through which the adhesive bead is filled. There is therefore corrosion in the contact area between the side wall and radial housing avoided. Furthermore, the particularly susceptible to corrosion dives Cut edge of the side wall in the in the Groove located and is therefore protected.
- the cutting edges are a further embodiment of the invention of the material that the outer groove wall sections limit the radial housing, also by one Glue bead covered. This measure also serves as protection in the gap between the side wall and the groove wall sections penetrating moisture and thus the prevention of Corrosion.
- the tangential aligned discharge line to the section forming the outlet opening permanent connections between the side wall and the radial housing be attached.
- These inseparable connections are only for the stabilization of the adhesive connection before Tying required. This allows further processing of the Fan housing without waiting for the adhesive to set must become. This means that the fan housing can be used without additional Waiting time can continue to be used.
- Undetachable connections such as rivets
- Attaching the Undetachable connections can occur after gluing of the radial housing with the side walls, so that no interruption of the gluing process when setting the Riveting or when establishing the permanent connection arises.
- a rivet only penetrates in this area the side wall in the area of the groove wall sections, this However, areas are outside of the fan housing enclosed space in which the radial fan is arranged is.
- a method according to the invention for producing a fan housing provides that two define the cross-sectional shape Side plates are aligned radially. An essentially Flat web material is fed and the contour shaped following the side panels and attached to the side panels. The flat web material then forms axially radial housing extending between the side plates. According to the invention is on both sides of the web material marginal double fold, one in the middle Groove runs. For attaching the web material to the side panels these are inserted into a groove and glued connected.
- the supply takes place the web material from a supply roll, the web material is still flat over the entire width, being bent during feeding to the side panels the double fold forming the groove is formed.
- the web material according to the invention during the feeding of the loop length the side walls cut accordingly. Beginning and end of the radial housing formed from the sheet material are therefore flush with the outlet opening and through the Sidewalls given edges.
- FIG. 1 shows an oblique view of an inventive Fan housing 10.
- the fan housing has an outlet opening 17 through which the fan produces Fluid flow essentially tangential to the radial fan the fan housing 10 flows out.
- the outlet opening is on their top and bottom by the radial housing 11 and laterally limited by the side walls 15.
- mounting flanges 23 can be arranged be the connection of additional fluid lines to the fan housing serve.
- the fan housing 10 has on both sides a radially protruding double rebate on the radial housing 11, between which the double fold Groove wall sections 13, a groove 12 is formed, in which the side wall 15 protrudes with its side edge 22 and glued there.
- the radial housing 11 is corresponding the contour of the side walls 15 shaped.
- Rivets 16 are both on in the illustrated embodiment the ends of the radial housing, i.e. in the area of the outlet opening 17 as well as in the transition from the tangential, straight line Course of the radial housing 11 leading to the outlet opening 17 leads into the radial fan essentially radially enclosing Area arranged.
- the rivets are used only for Attach the two parts together as long as the glue is not set.
- the adhesive connection is suitable even without additional rivets all strength requirements to suffice. Only when the adhesive is not set an additional securing of the bond is required, if further processing of the Fan housing should take place.
- FIG. 2 shows a section through the Fan housing along the section line II-II of Figure 1.
- the area is shown in which the side wall is on both sides from the groove wall sections 13 which form the double fold is embraced.
- the side wall dips into the groove 12 on.
- the cutting edge 18 of the outer Groove wall section 13 is covered by an adhesive bead 14.
- the side edge 22 of the side wall 15 is from the two groove wall sections 13 gripped and is located in the groove 12. There it dips into the adhesive 14. Through the adhesive 28 in the groove, in particular in the groove base, and if necessary additionally the two adhesive beads 14 on both sides of the side wall a fluid-tight connection is created in each case. This is also due to the gluing between the side wall 15 and the groove wall sections 13 the case. So is the groove against deposition of dirt, moisture and water and thus also protected against corrosion. This is particularly so in the area of the side edge and also in the area of the cut edge 18 the case.
- the radial housing delimited by the peripheral double fold 24 extends substantially perpendicular to the side wall 15.
- the one of the groove wall sections 13 of the radial housing 11 encompassed region of the side walls 15 one opposite the side walls 15 of conventional radial fan housings 10 additional oversize required because of axially extending region of the radial housing is not runs in alignment with the radially outer side edge 22, but in contrast, set back radially inwards by the groove depth is.
- the radial housing instead of the double fold 24 have a triple fold.
- the triple fold then points located within the side walls each a radially inward fold on and next to it first fold, which is set back inwards, a double fold 24 as described above. Then it is between that inwardly projecting fold and the inner first groove wall section 13 an outwardly open groove is formed. If it is annoying, it can be locked.
- One advantage of such a configuration is one at the expense of one slightly larger axial length realized less Outer diameter.
- FIG. 3 shows a manufacturing station for manufacturing according to the invention Radial fans shown schematically, on the basis of a process for the production of the invention Fan housings is explained.
- Figures 3a to 3c show sectional views through the supplied material with different processing stages of the production.
- the web material 21 passes through a first bending tool 26 and a section 31 is on both sides at the edge of the web material angled by 90 °. A fold is formed.
- the web material As shown in FIG. 3b, 21 has a 90 ° angle angled section 31 on the cutting edge 18th ends. The turn is made down from the plane the web material 21 away.
- the web material 21 reaches the side walls 15.
- the web material 21 corresponds to the contour the side walls 15 shaped.
- the side walls 15 dive with its side edge 21 into the adhesive-filled groove 12.
- the adhesive connection is established.
- the web material 21 becomes a radial housing shaped.
- the web material is first on one Started early 29, the flush and preferably flush to outlet opening 17, and then around the side wall 15 to to the other end 30 on the opposite side of the outlet opening 17 led around.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Packaging Of Machine Parts And Wound Products (AREA)
Abstract
Description
- Figur 1
- das Schrägbild eines erfindungsgemäßen Ventilatorgehäuses;
- Figur 2
- ein Schnittbild durch das Ventilatorgehäuse im Bereich des Radialgehäuses entlang der Schnittlinie II-II in Figur 1;
- Figur 3
- die schematische Darstellung eines erfindungsgemäßen Verfahrens zur Herstellung eines Ventilatorgehäuses; und
- Figuren 3a-3c
- Schnitte entlang den Schnittlinien A-A, B-B bzw. C-C der Figur 3.
Claims (11)
- Ventilatorgehäuse für Radialventilator mit das Gehäuse bildenden im wesentlichen radial ausgerichteten, beabstandet zueinander angeordneten Seitenwänden und einem im wesentlichen axial ausgerichteten, sich zwischen den Seitenwänden erstreckenden und einen Rotor im wesentlichen umschließenden, in eine Auslassöffnung mündenden Radialgehäuse, dadurch gekennzeichnet, dass das Radialgehäuse (11) randständige Nuten (12) aufweist, wobei die Seitenwand (15) in die Nut (12) eintaucht, so dass die Seitenwand (15) beiderseits von radial ausgerichteten Nutwandungsabschnitten (13) des Radialgehäuses (11) umgriffen wird und das Radialgehäuse (11) durch Verkleben in der Nut (12) an den Seitenwänden (15) befestigt ist.
- Ventilatorgehäuse nach Anspruch 1, dadurch gekennzeichnet dass in der Nut (12) eine durchgehende, einstückige Kleberaupe (14) ausgebildet ist.
- Ventilatorgehäuse nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die äußeren radial ausgerichteten Nutwandungsabschnitte (13) die Seitenkante des Radialgehäuses (11) bilden, wobei eine Kleberaupe (14) sich auf die axial erstreckende Zuschnittkante (18) des Radialgehäuses (11) erstreckt.
- Ventilatorgehäuse nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in der Nut (12) eine fluiddichte Verbindung zwischen Radialgehäuse (11) und Seitenwand (15) hergestellt ist.
- Ventilatorgehäuse nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Nuten (12) aus einem Doppelfalz (24) des Materials des Radialgehäuses (11) gebildet sind, wobei vorzugsweise die Seitenwände (15) ein der Nuttiefe entsprechendes Übermaß aufweisen.
- Ventilatorgehäuse nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass im Bereich der Nuten (12) am Beginn und Ende des Radialgehäuse (11) und vorzugsweise an einer dazwischenliegenden Stelle unlösbare Verbindungen zwischen Radialgehäuse (11) und Seitenwänden (15), insbesondere durch Niete (16), hergestellt sind.
- Verfahren zum Herstellen von Ventilatorgehäusen für Radialventilator, wobei zwei die Querschnittsform definierende Seitenwände radial ausgerichtet werden wobei ein im wesentliches flaches Bahnmaterial zugeführt wird, wobei das Bahnmaterial der Kontur des Seitenbleche folgend geformt und an den Seitenwänden befestigt wird und damit das sich axial erstreckende Radialgehäuse bildet, dadurch gekennzeichnet, dass am Bahnmaterial (21) beidseitig jeweils ein randständiger Doppelfalz (24) ausgebildet wird, in dessen Mitte jeweils eine Nut (12) ausgebildet ist, wobei die Seitenwände (15) von den Nutwandungsabschnitten (13) je einer Nut (12) umfasst und in diesem Bereich mit dem Radialgehäuse (11) verklebt werden.
- Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass der Klebstoff (28) aus einem Klebstoffspender (25) in die Nut (12) eingeführt wird bevor das zugeführte Bahnmaterial (21) in Anlage mit den Seitenwänden (15) gelangt, wobei die Seitenwände (15) in die Nut (12) eintauchen.
- Verfahren nach einem der Ansprüche 7 oder 8, dadurch gekennzeichnet, dass flaches Bahnmaterial (21) zugeführt wird, durch Biegen während der Zufuhr die randständigen Doppelfalze (24) mit den dazwischenliegenden Nuten (12) ausgebildet werden und anschließend der Kontur der Seitenwände (15) entsprechend geformt und in passender Länge abgelängt wird.
- Verfahren nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass ein unlösbare Befestigen des Radialgehäuses (11) an den Seitenwänden (15), insbesondere durch Niete (16), im Bereich des Anfangs (29) und des Endes (30) des Radialgehäuses (11) erfolgt.
- Verfahren nach einem der Ansprüche 7 bis 10, dadurch gekennzeichnet, dass während des Anbringens und Anformens des Radialgehäuses (11) die Seitenwände (15) eine Drehbewegung um die Mittelachse (19) des Radialventilators ausüben, so dass die Umfangsgeschwindigkeit der Seitenwände (15) der Zufuhrgeschwindigkeit des Bahnmaterials entspricht.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10235179A DE10235179A1 (de) | 2002-08-01 | 2002-08-01 | Ventilatorgehäuse für Radialventilatoren und Verfahren zur Herstellung von Ventilatorgehäusen |
DE10235179 | 2002-08-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1388669A1 true EP1388669A1 (de) | 2004-02-11 |
EP1388669B1 EP1388669B1 (de) | 2005-08-03 |
Family
ID=30128618
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03013893A Expired - Lifetime EP1388669B1 (de) | 2002-08-01 | 2003-06-20 | Ventilatorgehäuse für Radialventilatoren und Verfahren zur Herstellung von Ventilatorgehäusen |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1388669B1 (de) |
AT (1) | ATE301249T1 (de) |
DE (2) | DE10235179A1 (de) |
DK (1) | DK1388669T3 (de) |
ES (1) | ES2243835T3 (de) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1816446A1 (de) * | 1968-12-21 | 1970-07-23 | Siemens Ag | Verfahren zum Herstellen von Spiralgehaeusen fuer Radialgeblaese |
US3653116A (en) * | 1970-09-25 | 1972-04-04 | Ilg Ind Inc | Method and apparatus for forming centrifugal fan housings |
FR2105109A7 (de) * | 1970-09-28 | 1972-04-28 | Torin Corp | |
EP0289735A2 (de) * | 1987-03-12 | 1988-11-09 | Fischbach GmbH & Co.KG Verwaltungsgesellschaft | Gehäuse für ein Radialgebläse |
EP0403007A1 (de) * | 1989-06-13 | 1990-12-19 | MARZORATI TECNICA INDUSTRIALE S.p.A. | Spirale für einen motorangetriebenen Lüfter |
US5221183A (en) * | 1992-03-13 | 1993-06-22 | Alco Industries, Inc. | Blower housing seam and method of making same |
-
2002
- 2002-08-01 DE DE10235179A patent/DE10235179A1/de not_active Withdrawn
-
2003
- 2003-06-20 DK DK03013893T patent/DK1388669T3/da active
- 2003-06-20 DE DE50300898T patent/DE50300898D1/de not_active Expired - Lifetime
- 2003-06-20 EP EP03013893A patent/EP1388669B1/de not_active Expired - Lifetime
- 2003-06-20 ES ES03013893T patent/ES2243835T3/es not_active Expired - Lifetime
- 2003-06-20 AT AT03013893T patent/ATE301249T1/de not_active IP Right Cessation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1816446A1 (de) * | 1968-12-21 | 1970-07-23 | Siemens Ag | Verfahren zum Herstellen von Spiralgehaeusen fuer Radialgeblaese |
US3653116A (en) * | 1970-09-25 | 1972-04-04 | Ilg Ind Inc | Method and apparatus for forming centrifugal fan housings |
FR2105109A7 (de) * | 1970-09-28 | 1972-04-28 | Torin Corp | |
EP0289735A2 (de) * | 1987-03-12 | 1988-11-09 | Fischbach GmbH & Co.KG Verwaltungsgesellschaft | Gehäuse für ein Radialgebläse |
EP0403007A1 (de) * | 1989-06-13 | 1990-12-19 | MARZORATI TECNICA INDUSTRIALE S.p.A. | Spirale für einen motorangetriebenen Lüfter |
US5221183A (en) * | 1992-03-13 | 1993-06-22 | Alco Industries, Inc. | Blower housing seam and method of making same |
Also Published As
Publication number | Publication date |
---|---|
EP1388669B1 (de) | 2005-08-03 |
ES2243835T3 (es) | 2005-12-01 |
DE50300898D1 (de) | 2005-09-08 |
ATE301249T1 (de) | 2005-08-15 |
DK1388669T3 (da) | 2005-08-22 |
DE10235179A1 (de) | 2004-02-19 |
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