EP1582750A2 - Gehäuse, Laufrad und Radialgebläse mit einem Gehäuse und einem Laufrad - Google Patents
Gehäuse, Laufrad und Radialgebläse mit einem Gehäuse und einem Laufrad Download PDFInfo
- Publication number
- EP1582750A2 EP1582750A2 EP05005792A EP05005792A EP1582750A2 EP 1582750 A2 EP1582750 A2 EP 1582750A2 EP 05005792 A EP05005792 A EP 05005792A EP 05005792 A EP05005792 A EP 05005792A EP 1582750 A2 EP1582750 A2 EP 1582750A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- wall
- impeller
- housing
- rear side
- flow channel
- 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
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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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
- F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
-
- 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
- F04D29/4233—Fan casings with volutes extending mainly in axial or radially inward direction
Definitions
- the invention relates to a housing for a radial fan with a flow channel, the one between an entrance wall and a distance to it arranged rear side wall and a peripheral wall connecting them runs, wherein in the region of the peripheral wall an exhaust opening is arranged for the flow channel.
- a housing with a the radial fan spiral surrounding peripheral wall also referred to as spiral housing.
- the invention relates to a Impeller for such a housing and a radial fan with a Housing and an impeller.
- Radial fans according to the prior art are suitable in many forms and sizes for conveying fluid media in the form of air, gas or Steam. Accordingly, such blowers find many applications, especially in the field of air conditioning and heating systems, eg. B. in vehicles. Larger embodiments of such radial blowers find, for example Application in power plant construction.
- an axially drawn air flow is usually led after entry into an axially mounted impeller and there over in Impeller arranged impeller blades or rows of blades on a radial Blowout deflected by 90 °. That is, the axially sucked by the impeller Air flow is achieved by means of impellers or rows of blades arranged in the impeller conveyed towards its peripheral region and thus deflected radially. Thereafter, the air flow escaping the impeller is tangential along a housing surrounding the impeller, in particular along the same Peripheral wall, further promoted, this housing often the Has a shape of a spiral. From the spiral, the air flow over the sun mentioned discharge nozzle promoted in a possible air distribution system.
- the impeller is from a motor, which is for example an electric motor, driven.
- Impeller loading and impeller flow are uneven. Zargen paragraph is due to insufficient deflection of the axial much less conveyed in the radial direction than the blower motor side.
- the efficiency can be considered as the ratio of air power the blower are defined to the shaft power of the blower, wherein the Shaft power of the blower as a product of torque and angular velocity is defined.
- vanes in the flow channel and / or in the suction / discharge nozzle a radial fan to provide secondary flows to channel sufficiently.
- a circumferentially extending flow channel, which extends to the discharge port opening is thereby from the rear side wall, the suction-side entrance wall and the peripheral wall of the housing formed.
- the circumferentially extending Flow channel essentially from the outer boundary of the Impeller forming opening surface of the impeller formed.
- Such vanes for limiting secondary flow effects are, for example known from DE 199 63 796 A1.
- Such rectangular spiral casing, d. H. Spiral housing with a right-angled Cross section for the flow channel, as in EP 1 106 837 A1 shown have uneven impeller impingement and impeller flows on, since the front and the rear side wall are not in Flow direction are axially inclined and the radial distance between Impeller outlet or outlet opening and the peripheral wall of the Housing in the axial direction over the impeller width is constant, although the Impeller flow along the impeller width is uneven.
- the invention is therefore based on the object, a housing for a radial fan indicate, in which over the prior art a Reduction of secondary flows in the volute casing is achieved.
- a particularly suitable impeller and a radial fan with specify a housing and an impeller.
- This object is according to the invention in a housing of the type mentioned solved by the flow channel from the entrance wall radially widening towards the rear side wall.
- the invention is based on the consideration that a housing for a Radial fan, in particular a spiral housing, where the largest mass flow of the fluid medium to be delivered as a result of the deflection occurs, the should provide larger volumes of space and vice versa.
- the means, in the area of the spiral housing should be due to the mass flow with a smaller volume of space a reduction of the volume of space and with larger volumes of space increase the volume of space, so that the flow cross section remains constant.
- the housing adapted so that where the largest mass flow is to be conveyed, according to room volume is created. This will be the case spirally encircling flow channel designed such that this from the entrance wall towards the rear side wall or vice versa expands.
- the flow channel limiting Circumferential wall inclined about the center in the width. The inclination the peripheral wall can also be an alternative to the center different axis of rotation take place.
- the housing has regard to Radial extent in the fulcrum the shape of a linearly extended spiral or a logarithmic spiral.
- the widening of the flow channel is expediently such that the expansion at least one point in the course of the flow channel over all or part of the width of the flow channel is trained. That is, the widening across the width of the Flow channels, which are approximately the width of the peripheral wall corresponds, takes place in a relevant part and is limited not, as in the prior art, on edge areas of the housing, for example, by rounding corners or the like. Depending on Embodiment may be the rounding of the corners with accordingly constant corner radii done. Alternatively, the corner radius along vary the housing circumference. For example, the corner radius of the housing tongue in the direction of the exhaust opening.
- a widening of the flow channel is characterized achieved that the rear side wall and the spaced apart suction inlet wall including the peripheral wall at least one-sided or two-sided over the entire area or just over Portions of the spiral course of the flow channel obliquely are arranged to each other.
- the volute can be wider be designed as the impeller.
- the spiral housing can be one-sided or be executed axially expanded on both sides.
- the input wall and the peripheral wall are suction side arranged to each other to form an obtuse angle.
- the rear side wall and the peripheral wall to each other arranged to form an acute angle, so that a widening given the flow channel.
- a cross-sectional shape for the flow channel a trapezoidal shape, in particular an irregular trapezoidal shape, or a triangular shape or a parallelogram shape.
- An irregular trapezoid or a triangle is emulated in such a way that the wider side of the geometric Form is essentially formed by the rear side wall, the front short side or a triangle top part of the entrance wall of the Housing forms.
- a parallelogram is an expansion the flow channel in the area of the rear side wall instead.
- the peripheral wall of the input wall in the direction stepped on the rear side wall is graduated on the wall side or circumferentially, so that seen in the axial direction z.
- B. a rear stage a larger radial Expansion has as a front step.
- it can preferably each step individually according to one of the above-mentioned geometric Forms be formed, d. H. towards the back sidewall radially expand.
- the peripheral wall in the width an inclination of greater than 0 ° to a maximum of 45 °.
- the peripheral wall is preferably designed in a straight line.
- the peripheral wall arcuate, in particular arcuate inwardly or outwardly, extend or have another expedient form.
- the flow channel is in Seen flow direction divided one or more times.
- a Subdivision for example by means of partitions or multiple vanes, secondary flows are prevented.
- suction side in the entrance wall preferably provided an axial inlet opening.
- the axial inlet opening In the border area can the axial inlet opening to be formed bead-shaped.
- the exhaust opening On the output side is Advantageously, the exhaust opening in the region of the peripheral wall radially or arranged tangentially. In a radial arrangement, the exhaust opening extends perpendicular to the main flow direction in the volute casing. at a tangential arrangement is the exhaust opening in the Circumferentially arranged, which is preferably round, but also a may have other appropriate form.
- the object is achieved by a Number of rotation-driven about a rotation axis, in particular arranged between an input wall and a rear side wall Shovels whose blade ends into one along a radially extending and the input wall and the rear side wall connecting circumferential wall arranged flow channel open, the respective Blade end axially widening, in particular from the input wall in Direction of the rear sidewall, runs.
- the respective blade end radially in the inner and / or outer diameter increase.
- the rows of blades are over a hub with the blower motor connected.
- the hub may have openings for fan motor cooling and be appropriately shaped.
- an impeller and a housing are advantageously on each other, adapted according to the form described above.
- the impeller preferably has a profiled blading, which the blade channel in a divided convergent channel part and a divergent channel part. It will accelerates the flow in a first short - the convergent - channel part and unguided, in the second straight or slightly curved - the divergent - channel part, the flow is delayed.
- Fig. 1 shows a perspective view of a housing 1 for a radial fan 2.
- the housing 1 comprises a rear side wall 3 and a spaced apart, suction-side input wall 5. Axial is in the input wall. 5 suction side an inlet opening 7 (also called frame) arranged. Between the rear side wall 3 and the front entrance wall 5 extends, connecting them, a peripheral wall 11 along the housing periphery 9, forming a flow channel 13.
- the housing 1 - also called spiral housing - is in the present embodiment radially along its housing periphery 9 of the spiral Peripheral wall 11 limited. That is, to form a spiral Peripheral wall 11, the flow channel 13 takes along the flow direction R in its dimensions in the direction of a perpendicular to Peripheral wall 11 arranged exhaust opening 15 to. This is in the Fig. 1 by four the respective cross section of the flow channel 13 at respective Positions P0 to P3 forming polygons indicated. This means, the dimensions, in particular the cross section of the flow channel 13, increase from the position P0 in the direction of the exhaust opening 15.
- the Spiral shape of the housing 1 (also called spiral housing) is included suitably to the flow of the fluid medium and the thereof resulting pressure load adjusted accordingly.
- the rear side wall 3, the input wall 5 and the peripheral wall eleventh form the flow channel 13.
- the rear side wall 3 has an opening for driving by means of an electric motor and its cooling on.
- the suction-side inlet wall 5 is provided with the inlet opening 7, the axisymmetric or asymmetrical about a rotation axis 17th of the housing 1 is arranged.
- the inlet opening 7 can further Zargenformen and have geometric designs.
- the rear side wall 3 and the input wall 5 are through the peripheral wall 11 of the housing 1 spaced apart.
- the course of the flow of the fluid medium is shown in FIG. 1 by flow arrows S1 and S2 indicated.
- the fluid medium mostly air, gas or steam, becomes axial according to the flow arrow S1 along the axis of rotation 17 sucked through the inlet opening 7 of the housing 1.
- the fluid Medium is then radially outward into the flow channel 13 along the radial extent, in particular the peripheral wall 11 of the housing 1, and thus along the circumferential course of the flow channel 13 guided and finally through the exhaust opening 15 in this case along the main flow direction R out of the housing 1 and thus out the radial fan 2 has flowed.
- the exhaust opening 15 instead of a vertical arrangement also radially at a suitable location tangentially in the region of the circumferential wall 11 be arranged.
- the flow channel 13 forms the peripheral wall eleventh with the suction-side input wall 5 an obtuse angle ⁇ .
- the Rear side wall 3 forms the peripheral wall 11 in this area an acute angle ⁇ .
- the peripheral wall 11 is thus at an angle to the input wall 5 and the Rear side wall 3 is arranged.
- the opening or flow cross-section of the flow channel 13 forms depending on the size of the obtuse angle ⁇ and the acute angle ⁇ a polygonal shape, in particular a trapezoidal shape.
- the flow cross-section of the flow channel 13 a Have a triangular shape or a parallelogram shape.
- the flow channel 13 completely along be widened the peripheral wall 11.
- the flow channel 13 may be formed expanded only in partial areas. Also, the Widening in the opposite direction.
- the expansion of the Flow channel 13 takes place by tilting the peripheral wall eleventh around its latitude center. Alternatively, the inclination of the Circumferential wall 11 at a distance from the width center Be formed pivot point.
- a radial fan 2 is shown in section with a spiral housing 1 and an impeller 19 with radius r D.
- the flow channel 13 is only partially along the peripheral wall 11 formed expanded.
- the peripheral wall 11 forms with the input wall 5 and the rear side wall 3 each an angle of 90 °, so that the entrance wall 5 and the rear side wall 3 arranged plane-parallel to each other are.
- the area B1 may be widened.
- the area B2 takes the widening of the flow channel 13 along the peripheral wall eleventh by varying inclination of these in the flow direction R along the Arrow P2 from 10 ° to 40 ° or to 50 ° (peripheral wall position) too.
- one of the walls of the housing 1 - the entrance wall 5 and / or the rear side wall 3 - obliquely to the vertical and thus be inclined.
- Fig. 3 shows a possible embodiment of a radial fan 2 with a Housing 1 and an impeller 19.
- the impeller 19 and the housing. 1 are arranged about a rotation axis 17.
- the fluid medium is suction side along a flow arrow S1 through the frame opening or Inlet opening 7 sucked axially by means of the impeller 19 and in radialeraxial Direction along a flow arrow S2 in the circumferential along the circumferential wall 11 arranged flow channel 13 promoted.
- the cross section of the flow channel 13 is formed trapezoidal to triangular. That is, the flow channel 13 is widened from the input wall 5 in the direction of the rear side wall 3.
- the inclined position of the peripheral wall 11 and the rear side wall 3 is inclined in this embodiment against a usually rectangular orientation of peripheral wall and side wall.
- the widening of the circumferential wall 11 to the horizontal can be up to 45 °, ie the peripheral wall 11 assumes, for example, with respect to the input wall 5 at an expansion of 20 ° an obtuse angle ⁇ of 110 °.
- the inclination of the input wall 5 is 0 ° in this example.
- the inclination of the rear side wall 3 may vary between a range of about 0 ° to 30 °.
- the acute angle ⁇ between the circumferential wall 11 and the rear side wall 3 is 40 ° to 70 °.
- the expansion of the peripheral wall 11 is 20 °.
- Fig. 4 shows another embodiment of a radial fan 2 with impeller 19 and housing 1.
- the housing 1 and its extending therein Flow channel 13 formed only partially obliquely.
- the fan tongue also called tongue zone Z for short
- the peripheral wall 11 is in the right Angle to the input wall 5 and the rear side wall 3 is arranged.
- the tongue region Z as shown by the dashed line, be formed step-shaped.
- the housing Compared to the right-angled tongue area Z is in the area above the axis of rotation 17, the housing 1, in particular its Circumferential wall 11 and thus the flow channel 13, stepped and trapezoidal. This area of the peripheral wall 11 above the axis of rotation 17 also Druckstutzen Scheme D is called.
- Suction side seen in the flow direction R according to the flow arrow S1 is the peripheral wall 11 with a first trapezoidal stage T1 in the area the input wall 5 is formed.
- Towards the back sidewall 3 immediately follows the first stage T1 a second trapezoidal Stage T2.
- further stages Tn may be possible.
- the width the steps may vary over the circumference 9.
- the edges of the input wall 5 and / or the rear side wall 3 are additionally rounded.
- the impeller 19 is rotationally driven about the rotation axis 17 and has a radius r D , so that blade ends Er of the impeller 19 open into the flow channel 13.
- FIGS. 5a to 5d schematically show different embodiments of others Radial fan 2 with different oblique housings 1a to 1c and oblique flow channels 13a to 13f.
- the housing 1a with the Flow channel 13a has a more parallelogram-like opening cross-section on. Flow outlet side is a bead frame educated.
- the housing 1b with the flow channel 13b sees a trapezoidal to triangular opening or flow cross section before.
- the Housing 1 c with the flow channel 13 c is a rectangular housing with an oblique side wall 3 with flow-input side bead frame.
- Impeller 19 is arranged, depending on the embodiment, a trapezoidal Cross section has.
- One in the direction of the rear side wall 3 by inclined position of the Circumferential wall 11 expanded flow channel 13 causes in the area the rear side wall 3 a widened volume of space and resulting a particularly strong flow, so that Secondary flows are reduced.
- 5b to 5d are further geometric cross-sectional shapes for a Expansion of a flow channel 13d to 13f shown.
- the hatched areas make the respective flow channel 13d to 13f in the area the peripheral wall 11 between the input wall 5 and the rear Sidewall 3 dar.
- the front input wall 5 inclined is, this is bead-shaped to avoid delamination on the frame designed.
- the front side wall or input wall 5 can be axial be inclined towards the rear side wall 3 to the To improve impeller loading and to secondary flows to prevent.
- the impeller 19 may suction side with an arcuate Cover disc be equipped.
- additional sealing edges 22 are possible, for. B. positioned on the impeller 19, as shown in Fig. 5a, or accordingly on the volute 1.
- the volute 1 be wider than the impeller 19 may be formed. This is the spiral housing 1 on one or both sides axially expanded.
- Corners or edges of the peripheral wall 11 can additionally be rounded.
- the corners along the housing periphery 9 a have constant radius or a varying radius. At a varying radius takes the corner radius along the housing circumference. 9 from the tongue in the direction of the exhaust opening 15 to.
- Fig. 6 shows schematically a further preferred embodiment of a radial fan 2 with a housing 1 and an impeller 19.
- the impeller 19th sits on a along an axis of rotation 17 arranged shaft, of an electric motor M is driven.
- a housing 1 spirally revolving Circumferential wall 11 and the associated flow channel 13 are stepped executed, starting from the input wall 5 in the direction the rear side wall 3 results in a widening, by the stages T1 and T2 are increasingly radially formed.
- the respective Stage T1 and T2 also from the input wall 5 in the direction of the rear Sidewall 3 are widened, d. H. the steps T1 and T2 would be inclined (not shown in detail), wherein the expansion differs for each stage can be.
- the peripheral wall 11 may be formed in various ways, z. B. arcuate (inwardly or outwardly arcuate), linear or cupped.
- the rear side wall 3 of the housing 1 is additionally against the vertical inclined, so that the rear side wall 3 with the peripheral wall 11 includes an acute angle ⁇ .
- the flow channel 13 and the exhaust opening 15 are divided in the embodiment. This is for example between the two stages T1 and T2 of the peripheral wall 11 and the stepped flow channel 13 in the region of the exhaust opening 15th a partition 21 is provided.
- a guide vane for dividing the flow channel 13 into several Subchannels provided in different areas of the flow channel be.
- the impeller 19 could also be formed in steps.
- the impeller 19 in a manner not shown on two axially in the flow direction R side by side on the axis of rotation 17 arranged rows of blades with increasing from the input wall 5 in the direction of the rear side wall 3 radius r D and thus corresponding to the stages T1 and T2 are executed.
- Fig. 7 and 8 show further embodiments of a housing 1 of a Radial blower 2 in the radial section of the spiral housing 1.
- the housing 1 In these embodiments, each double-flow is formed. Ie. it is via two inlet openings 7 axially in the front entrance wall. 5 and the rear side wall 3 sucked.
- the illustrated in Fig. 7 Housing 1 comprises a straight impeller 19 with a this surrounding oblique or pointed roof-like spiral housing.
- the housing 1 has a large housing volume where a high mass flow is encouraged. As a result, secondary flow effects are reduced.
- the housing 1 shown in FIG. 8 in addition gap losses reduced.
- instead of a straight is an oblique oblique Impeller 19 surrounded by the housing 1.
- a blower motor be positioned to cool it in one of the inlet openings 7.
- the front input wall 5 and / or the rear side wall 3 and the corresponding blade end E B of the impeller may be arranged in a plane EB.
- a holder 24 for a motor the fan motor
- an opening 26 for cooling the fan motor is provided in the region of the impeller 19 of the rear side wall 3.
- Fig. 10 shows an alternative embodiment for an impeller 19 with a Blade series SR and a profiled blading.
- the respective Shovels SS of the blade row SR profiled formed, for example formed curved forward or backward.
- This will be a Blade channel SK formed in a first convergent channel SK1 and divided into a second divergent channel part SK2. It happens in the first channel part SK1 to an acceleration and deflection of the flow and in the second, approximately straight or slightly curved channel part SK2 to a delay of the flow.
- Such a profiled blading the blade row SR allows the use of the blower 2 for the forward curved case even at low speed level.
- the spiral housing are made more flexible
- adjacent Blade row SR offset relative to each other by half a blade pitch be arranged. That the blades SS of a blade row SR are offset - In the distance between two blades SS of the adjacent blade row SR - arranged.
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Abstract
Description
- Fig. 1
- eine perspektivische Darstellung eines Gehäuses, insbesondere eines schiefwinkligen Spiralgehäuses,
- Fig. 2
- einen senkrecht zur axialen Ausdehnung verlaufenden Schnitt durch ein Laufrad und ein Gehäuse mit einem Strömungskanal,
- Fig. 3
- einen radialen Schnitt eines Gehäuses parallel seines Durchmessers mit einem im Querschnitt trapezförmigen Strömungskanal,
- Fig. 4
- eine weitere Darstellung einer besonders bevorzugten Ausführungsform eines Gehäuses mit einem im Querschnitt abgestuften Strömungskanal,
- Fig. 5, 6
- weitere Darstellungen einer bevorzugten Ausführungsform eines Gehäuses mit verschiedenen Querschnittsformen für den Strömungskanal,
- Fig. 7, 8
- schematisch verschiedene Ausführungsformen für ein Gehäuse, insbesondere ein zweiflutiges Gehäuse für ein Radialgebläse,
- Fig. 9
- schematisch eine alternative Ausführungsform eines Gehäuses mit der Anordnung des Laufrades und der hinteren Seitenwand in einer Ebene, und
- Fig. 10
- schematisch ein Laufrad mit einer Schaufelreihe und einer profilierten Beschaufelung.
- 1
- (Spiral-)Gehäuse
- 2
- Radialgebläse
- 3
- hintere Seitenwand
- 5
- Eingangswand (= vordere Seitenwand)
- 7
- Eintrittsöffnung (= Saugstutzenöffnung)
- 9
- Gehäuseumfang
- 11, 11a - 11c
- Umfangswandung (= spiralförmig)
- 13, 13a - 13f
- Strömungskanal
- 15
- Ausblasöffnung (= Druckstutzen)
- 17
- Rotationsachse
- 19
- Laufrad
- 21
- Trennwand
- 22
- Dichtkanten
- 24
- Halter für Gebläsemotor
- 26
- Öffnung zur Kühlung des Gebläsemotors
- 27
- Laufradnabe
- B1 bis B2
- Bereich (= Übergangsbereich der Aufweitung des Strömungskanals 13)
- Bs
- Breite Gehäusestufe
- D
- Druckstutzenbereich
- E
- Schaufel
- Ea
- Schaufelende axial
- Er
- Schaufelende radial
- EB
- Ebene
- M
- E-Motor
- P0 bis P3
- Position im Strömungskanal 13
- rD
- Radius des Laufrads
- rAS
- Radius für die Schrägstellung der hinteren Seitenwand
- R
- Strömungsrichtung
- S1 bis S2
- Strömungspfeile
- SK
- Schaufelkanal
- SK1, SK2
- erster, zweiter Kanalteil des Schaufelkanals
- SR
- Schaufelreihe
- SS
- Schaufel
- T1 bis T2, Tn
- Stufen der Umfangswandung 11
- Z
- Zungenbereich
- α
- stumpfer Winkel zwischen Umfangswandung und vorderer Seitenwand
- β
- spitzer Winkel zwischen Umfangswandung und hinterer Seitenwand
- γ
- spitzer Winkel zwischen Ebene senkrecht zur Drehachse und unterer Seitenwand
Claims (21)
- Gehäuse (1) für ein Radialgebläse (2) mit einem Strömungskanal (13) zwischen einer Eingangswand (5) und einer im Abstand dazu angeordneten hinteren Seitenwand (3) und einer diese verbindenden Umfangswandung (11) und mit einer im Bereich der Umfangswandung (11) vorgesehenen Ausblasöffnung (15) für den Strömungskanal (13),
dadurch gekennzeichnet, dass
sich der Strömungskanal (13) von der Eingangswand (5) in Richtung auf die hintere Seitenwand (3) radial aufweitet. - Gehäuse nach Anspruch 1,
dadurch gekennzeichnet, dass
sich der Strömungskanal (13) von der Eingangswand (5) in Richtung auf die hintere Seitenwand (3) zumindest teilweise entlang seines Verlaufs radial aufweitet. - Gehäuse nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass
die Eingangswand (5) und die Umfangswandung (11) saugseitig zueinander unter Bildung eines stumpfen Winkels (α) angeordnet sind. - Gehäuse nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass
die hintere Seitenwand (3) und die Umfangswandung (11) zueinander unter Bildung eines spitzen Winkels (β) angeordnet sind. - Gehäuse nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet , dass
der Strömungskanal (13) einen trapezförmigen Querschnitt, eine Parallelogrammform oder eine Dreiecksform aufweist. - Gehäuse nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass
die Umfangswandung (11) von der Eingangswand (5) in Richtung auf die hintere Seitenwand (3) stufenförmig ausgebildet ist. - Gehäuse nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass
die Umfangswandung (11) in der Breite mit einer Neigung von >0° verläuft. - Gehäuse nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, dass
die Umfangswandung (11) in der Breite bogenförmig oder geradlinig verläuft. - Gehäuse nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet, dass
der Strömungskanal (13) in Strömungsrichtung (R) gesehen einfach oder mehrfach unterteilt ist. - Gehäuse nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet, dass
in der Eingangswand (5) eine axiale Eintrittsöffnung (7) vorgesehen ist. - Gehäuse nach einem der Ansprüche 1 bis 10,
dadurch gekennzeichnet, dass
die Eintrittsöffnung (7) im Randbereich wulstförmig ausgebildet ist. - Gehäuse nach einem der Ansprüche 1 bis 11,
dadurch gekennzeichnet, dass
die Ausblasöffnung (15) im Bereich der Umfangswandung (11) radial oder tangential angeordnet ist. - Laufrad (19) für ein Radialgebläse (2) mit einer Anzahl von um eine Rotationsachse (17) rotationsangetriebenen, insbesondere zwischen einer Eingangswand (5) und einer hinteren Seitenwand (3) angeordneten Schaufeln, deren Schaufelenden (Er) in einen entlang einer radial verlaufenden und die Eingangswand (5) und die hintere Seitenwand (3) verbindenden Umfangswandung (11) angeordneten Strömungskanal (13) münden,
dadurch gekennzeichnet, dass
das jeweilige Schaufelende (Ea) axial, insbesondere von der Eingangswand (5) in Richtung der hinteren Seitenwand (3) axial aufweitend verläuft. - Laufrad (19) für ein Radialgebläse (2) mit einer Anzahl von um eine Rotationsachse (17) rotationsangetriebenen, insbesondere zwischen einer Eingangswand (5) und einer hinteren Seitenwand (3) angeordneten Schaufeln, deren Schaufelenden (Er) in einen entlang einer radial verlaufenden und die Eingangswand (5) und die hintere Seitenwand (3) verbindenden Umfangswandung (11) angeordneten Strömungskanal
(13) münden,
dadurch gekennzeichnet, dass
das jeweilige Schaufelende (Er) radial im Außendurchmesser und/oder im Innendurchmesser zunimmt. - Laufrad nach Anspruch 13 und/oder 14,
gekennzeichnet durch
mindestens eine um die Rotationsachse (17) verlaufende Schaufelreihe. - Laufrad nach einem der Ansprüche 13 bis 15,
gekennzeichnet durch
mindestens mehrere um die Rotationsachse (17) verlaufende Schaufelreihen, die ggf. unterschiedlich beschaufelt sind. - Laufrad nach Anspruch 15 oder 16,
dadurch gekennzeichnet, dass
die Schaufelenden (Er) von benachbarten Schaufelreihen von der Eingangswand (5) in Richtung der hinteren Seitenwand (3) zueinander abgestuft, insbesondere axial aufweitend ausgebildet sind. - Laufrad nach einem der Ansprüche 13 bis 17,
dadurch gekennzeichnet, dass
die jeweilige Schaufelreihe eine profilierte Beschaufelung aufweist. - Laufrad nach einem der Ansprüche 13 bis 18,
dadurch gekennzeichnet, dass
die Beschaufelung eine Profilierung aufweist und die Profilierung einen konvergent-divergenten Schaufelkanal bildet, wobei die Beschaufelung vorwärts gekrümmt ist. - Laufrad nach einem der Ansprüche 14 bis 19,
dadurch gekennzeichnet, dass
benachbarte Schaufelreihen relativ zueinander um eine halbe Schaufelteilung versetzt angeordnet sind. - Radialgebläse (2) mit einem Gehäuse (1) nach einem der Ansprüche 1 bis 12 und einem Laufrad (19) nach einem der Ansprüche 13 bis 20.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004014331 | 2004-03-22 | ||
| DE102004014331 | 2004-03-22 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1582750A2 true EP1582750A2 (de) | 2005-10-05 |
| EP1582750A3 EP1582750A3 (de) | 2005-12-21 |
| EP1582750B1 EP1582750B1 (de) | 2009-06-24 |
Family
ID=34877623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20050005792 Expired - Lifetime EP1582750B1 (de) | 2004-03-22 | 2005-03-17 | Gehäuse und Radialgebläse mit einem Gehäuse und einem Laufrad |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1582750B1 (de) |
| DE (1) | DE502005007543D1 (de) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8667960B2 (en) | 2010-04-06 | 2014-03-11 | 3M Innovative Properties Company | Radial blower with shaped scroll profile |
| CN112228399A (zh) * | 2019-12-13 | 2021-01-15 | 绍兴阿利卡电器有限公司 | 一种用于油烟机、集成灶内的大风压蜗壳 |
| CN112628177A (zh) * | 2020-12-30 | 2021-04-09 | 太仓欣华盈电子有限公司 | 分流式散热风扇 |
| CN113091131A (zh) * | 2021-03-24 | 2021-07-09 | 青岛海尔空调器有限总公司 | 空调内机及空调器 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5188508A (en) * | 1991-05-09 | 1993-02-23 | Comair Rotron, Inc. | Compact fan and impeller |
| US5743710A (en) * | 1996-02-29 | 1998-04-28 | Bosch Automotive Motor Systems Corporation | Streamlined annular volute for centrifugal blower |
| EP0846868A3 (de) * | 1996-12-05 | 1999-02-03 | General Motors Corporation | Kreiselgebläseeinheit |
| US6042335A (en) * | 1998-05-04 | 2000-03-28 | Carrier Corporation | Centrifugal flow fan and fan/orifice assembly |
| US6224335B1 (en) * | 1999-08-27 | 2001-05-01 | Delphi Technologies, Inc. | Automotive air conditioning fan assembly |
| DE20309621U1 (de) * | 2003-03-24 | 2003-09-18 | Motoren Ventilatoren Landshut Gmbh, 84030 Landshut | Radialgebläse |
-
2005
- 2005-03-17 EP EP20050005792 patent/EP1582750B1/de not_active Expired - Lifetime
- 2005-03-17 DE DE200550007543 patent/DE502005007543D1/de not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8667960B2 (en) | 2010-04-06 | 2014-03-11 | 3M Innovative Properties Company | Radial blower with shaped scroll profile |
| CN112228399A (zh) * | 2019-12-13 | 2021-01-15 | 绍兴阿利卡电器有限公司 | 一种用于油烟机、集成灶内的大风压蜗壳 |
| CN112628177A (zh) * | 2020-12-30 | 2021-04-09 | 太仓欣华盈电子有限公司 | 分流式散热风扇 |
| CN113091131A (zh) * | 2021-03-24 | 2021-07-09 | 青岛海尔空调器有限总公司 | 空调内机及空调器 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1582750B1 (de) | 2009-06-24 |
| EP1582750A3 (de) | 2005-12-21 |
| DE502005007543D1 (de) | 2009-08-06 |
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