EP2342465B1 - Soufflante à canal latéral, en particulier turbine secondaire pour un moteur à combustion interne - Google Patents
Soufflante à canal latéral, en particulier turbine secondaire pour un moteur à combustion interne Download PDFInfo
- Publication number
- EP2342465B1 EP2342465B1 EP09782660.6A EP09782660A EP2342465B1 EP 2342465 B1 EP2342465 B1 EP 2342465B1 EP 09782660 A EP09782660 A EP 09782660A EP 2342465 B1 EP2342465 B1 EP 2342465B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- impeller
- blower
- inlet
- region
- 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.)
- Active
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 8
- 239000012530 fluid Substances 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 230000010349 pulsation Effects 0.000 description 9
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
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
- F04D23/00—Other rotary non-positive-displacement pumps
- F04D23/008—Regenerative 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
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
- F04D29/161—Sealings between pressure and suction sides 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
- F04D5/00—Pumps with circumferential or transverse flow
- F04D5/002—Regenerative pumps
- F04D5/007—Details of the inlet or outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2250/00—Geometry
- F05B2250/50—Inlet or outlet
- F05B2250/503—Inlet or outlet of regenerative pumps
Definitions
- the invention relates to a side channel blower, in particular secondary air blower for an internal combustion engine with a housing in which an outlet is formed, a first housing part, in which an axial inlet is formed, which opens via an inlet region in a first, substantially annularly extending conveying channel, an impeller which is drivable via a drive unit, is rotatably mounted in the housing and has conveying blades, which cooperate with the opposite conveyor channel, an interruption area between the inlet and the outlet, in which the conveyor channel is interrupted in the circumferential direction, and a recess which in Direction of rotation of the impeller is formed in front of the inlet region at the interruption region in the first housing part and is fluidly connected to the inlet region, wherein the depth of the recess from the impeller facing the upper edge of the interruption region to the inlet region grows.
- the US 3,982,848 shows such a side channel blower.
- these depressions occur immediately after sweeping each bucket at the end of the break region, since in the pockets between the bucket, compressed air is delivered from the outlet over the break region, which can suddenly relax toward the inlet in the inlet region upon reaching the inlet region. This leads both to a poorer efficiency of the pump and to significantly increased noise emissions.
- the EP 0 332 078 A1 an annular channel blower with an interruption region which extends into the inlet region and in this region has a recess which increases in the form of a chamfer in the direction of rotation.
- the noises occurring can indeed be reduced, however, the funded fluid flow is limited by the relatively small inlet opening. Also, noise, even though reduced, is created by pressure pulsations because sudden cross-sectional changes occur downstream of the break region for partial volumes of the volume delivered in the pockets upon reaching the inlet region. These pressure pulsations continue from radially outward to radially inward as they reach the inlet region through the respective part of the pocket.
- the diameter of the inlet region is greater than the width of the conveying channel and the shortest distance of an inner edge of the inlet region to the axis of rotation is equal to the distance of the inner edge of the conveying channel to the axis of rotation.
- the inlet area has the same radial distance to the axis of rotation as the conveyor channel, but the inlet area projects radially outward beyond the conveyor channel.
- a particularly large cross-section is provided for the inflow of air, whereby larger volume flows are sucked in compared to known designs.
- the recess is in the form of a chamfer extending from the interruption region in the direction of the inlet. This form provides a steady extension of the cross-section for the air delivered over the break region for slow continuous relaxation.
- the length of the recess in the circumferential direction corresponds to> 1 times the distance between two successive blades of the impeller.
- the housing consists of the first housing part, which serves as a cover part, and at least one second housing part, in which a second substantially annular extending delivery channel is arranged, which opens into the outlet, which is arranged tangentially to the second housing part, wherein the conveying blades of the impeller facing the delivery channels to both axial sides of the impeller.
- This version is a two-channel blower, which further improves efficiency compared to single-duct blowers.
- FIG. 1 shown side channel blower consists of a two-part housing 2 and a rotatably mounted in the housing 2 and via a Drive unit 3 driven impeller 4, for example, to promote air.
- the air passes via an axial inlet 6 into an inlet region 8 of a first housing part 10, which serves in the present embodiment as a cover part of the side channel blower. From the inlet region 8, the air then flows into two substantially annularly extending conveying channels 12, 14, of which the first conveying channel 12 is formed in the cover part 10 and the second conveying channel 14 is formed in a second housing part 16, in which also a bearing 18 a drive shaft 19 of the drive unit 3 is arranged, on which the impeller 4 is fixed.
- the outlet of the air via a tangential outlet 20, which is arranged on the second housing part 16.
- the impeller 4 is disposed between the cover member 10 and the second housing member 16 and has at its periphery conveying blades 22 which are curved and extend radially, wherein the conveying blades 22 by a radially extending peripheral ring 24 in a first row axially opposite to the first Delivery channel 12 and a second row axially opposite to the second conveying channel 14 are divided, so that two swirl ducts are formed, which are each formed by one of the conveying channels 12, 14 with the facing part of the impeller 4.
- the outer diameter of the conveying channels 12, 14 is slightly larger than the outer diameter of the impeller 4, so that a fluidic connection between the two conveying channels 12, 14 outside the outer periphery of the impeller 4 is made. Between the extending from the peripheral ring 24 conveyor blades 22 are thus formed radially outwardly open pockets 26, in which the air is promoted or accelerated.
- the axial inlet 6 is as far as possible from the tangential outlet 20 in the direction of rotation of the impeller 4.
- interruption regions 28 are arranged between the inlet 6 and the outlet 20 on the cover part 10 and on the housing part 16, in which the delivery channels 12, 14 are interrupted that in the interruption region 28 axially opposite to the conveying blades 22 of the impeller 4 as small as possible gap is present.
- the delivery channel 12 arranged in the cover part 10 has a substantially constant width b and extends over the circumference of the cover part, with the exception of the interruption region 28.
- the impeller 4 rotates clockwise from the inlet area 8 to the end of the delivery channel 12 and then over the interruption area 28 from where a single pocket is again passed over the inlet area 8 and draws in air.
- the cover part 10 is fastened by means of screws to the second housing part 16, which are inserted through corresponding bores 30 which are formed on radially outwardly extending projections 32 on the cover part 10. At two of these projections 32 are additionally small, axially extending bolts 34, which serve for the prefixing of the cover part 10 on the second housing part 16.
- a groove 38 is formed in the seal between the cover part 10 and the second housing part 16, a sealing ring 40 is inserted, which is held by lugs 42 in the groove 38.
- an annular ridge 46 is formed, which engages after assembly of the fan in a corresponding groove 48 of the impeller 4, whereby a seal from the conveying channel 12 in the direction of the interior of the impeller 4 takes place.
- the cover part 13 has a cylindrical recess 50 into which the drive shaft 19 of the drive unit 3 protrudes.
- a recess 52 is formed in front of the inlet region 8, which extends from an upper edge 54 of the interruption region 28 in the direction of the inlet region 8.
- the recess 52 is designed so that its cross-sectional area grows steadily in the direction of the inlet region 8, wherein in the present embodiment, the Width b of the recess 52 over the entire length about the width b of the conveying channel 12 corresponds, so that the growing cross section is realized by a change in depth, which grows to the inlet portion 8 to a depth corresponding to the depth of the conveying channel 12.
- the recess 52 thus has a constant angle to the surface of the interruption region 28, so that it is formed substantially as a chamfer. It extends over a length l, which corresponds approximately to> 1 times the distance between two successive conveying blades 22 of the impeller 4.
- An end region 54 of the delivery channel 12 is formed substantially corresponding to the tangential outlet 20, so that the end wall 56 delimiting the channel 12 substantially forms an extension of the outlet 12.
- the inlet 6 has to increase the delivery volume has a diameter d which is greater than the width b of the conveying channel 12, wherein an inner edge 58 of the inlet portion 8 is disposed at an equal radius as an inner edge 59 of the conveying channel 12, so that the cover part 10th in the inlet region 8 has a larger circumference than in the other areas.
- This also has the consequence that the recess 52 does not extend over the entire diameter d of the inlet region 8, but the recess 52 is bounded by a radially delimiting outer wall 60, which extends substantially axially.
- a front edge 62 which forms the line of intersection of the interruption region 28 with the recess 52, formed arcuate, so that the conveyor blades 22 of the impeller 4, the recess 52 first in the radially outer region and then in the radially inner region.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Claims (6)
- Ventilateur à canal latéral, en particulier ventilateur secondaire pour moteur à combustion interne avec
un carter (2) dans lequel est formée une sortie (20),
une première partie de carter (10) dans laquelle est formée une entrée axiale (6) s'ouvrant, via une région d'entrée (8) ayant un diamètre (d), dans un premier canal de refoulement (12) s'étendant de manière sensiblement annulaire,
une turbine (4) pouvant être entrainée par une unité d'entraînement, la turbine étant montée de manière à être rotatif dans le carter (2) et comportant des aubes de refoulement (22) qui coopèrent avec le canal de refoulement (12; 14) opposé,
une région d'interruption (28) entre ladite entrée (6) et ladite sortie (20), dans laquelle le canal de refoulement (12; 14) est interrompu dans le sens circonférentiel,
et un évidement (52) formée dans le sens de rotation de la turbine (4) en amont de ladite région d'entrée (8) au niveau de la région d'interruption (28) et est en communication fluidique avec la région d'entrée (8),
la profondeur de l'évidement (52) s'accroit du bord (54) supérieur de la région d'interruption (28) tourné vers la turbine (4) à la région d'entrée (8), caractérisé en ce que
le diamètre (d) de la région d'entrée (8) est supérieur à la largeur (b) du canal de refoulement (12), et que la plus petite distance d'un bord intérieur (58) de la région d'entrée (8) de l'axe de rotation est égale à la distance du bord intérieur (59) du canal de refoulement (12) de l'axe de rotation. - Ventilateur à canal latéral, en particulier ventilateur à air secondaire pour moteur à combustion interne selon la revendication 1, caractérisé en ce que l'évidement (52) est formé sous la forme d'un chanfrein s'étendant de ladite région d'interruption (28) ver la région d'entrée (8).
- Ventilateur à canal latéral, en particulier ventilateur à air secondaire pour moteur à combustion interne selon la revendication 1, caractérisé en ce que la largeur (b) de l'évidement (52) est égale à la largeur (b) du canal de refoulement (12).
- Ventilateur à canal latéral, en particulier ventilateur à air secondaire pour moteur à combustion interne selon l'une quelconque des revendications précédentes, caractérisé en ce que la longueur (I) de l'évidement (52) dans la direction circonférentielle est supérieure à la distance entre deux aubes de refoulement (22) successives de la turbine (4).
- Ventilateur à canal latéral, en particulier ventilateur à air secondaire pour moteur à combustion interne selon l'une quelconque des revendications précédentes, caractérisé en ce que la longueur (I) de l'évidement (52) dans la direction circonférentielle correspond à > 1 fois la distance entre deux aubes de refoulement (22) successives de la turbine (4).
- Ventilateur à canal latéral, en particulier ventilateur à air secondaire pour moteur à combustion interne selon l'une des revendications précédentes, caractérisée en ce que le carter (2) est formée par la première partie de carter (10), servant de couvercle, et par au moins une deuxième partie de carter (16), dans laquelle un deuxième canal de refoulement (14) est disposé, qui s'étend de manière sensiblement annulaire et s'ouvre dans la sortie (20) disposée tangentiellement à la seconde partie de carter (16), les aubes de refoulement (22) de la turbine (4) étant situées des deux côtés axiaux de la turbine (4) face aux canaux de refoulement (12, 14).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008056105A DE102008056105B4 (de) | 2008-11-06 | 2008-11-06 | Seitenkanalgebläse, insbesondere Sekundärluftgebläse für eine Verbrennungskraftmaschine |
PCT/EP2009/061514 WO2010052044A1 (fr) | 2008-11-06 | 2009-09-07 | Soufflante à canal latéral, en particulier turbine secondaire pour un moteur à combustion interne |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2342465A1 EP2342465A1 (fr) | 2011-07-13 |
EP2342465B1 true EP2342465B1 (fr) | 2019-09-04 |
Family
ID=41571300
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09782660.6A Active EP2342465B1 (fr) | 2008-11-06 | 2009-09-07 | Soufflante à canal latéral, en particulier turbine secondaire pour un moteur à combustion interne |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2342465B1 (fr) |
DE (1) | DE102008056105B4 (fr) |
WO (1) | WO2010052044A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010046870B4 (de) * | 2010-09-29 | 2016-09-22 | Pierburg Gmbh | Seitenkanalgebläse, insbesondere Sekundärluftgebläse für eine Verbrennungskraftmaschine |
DE102013220668A1 (de) | 2013-10-14 | 2015-04-16 | Continental Automotive Gmbh | Laufrad für eine insbesondere als Seitenkanalgebläse ausgebildete Seitenkanal-Strömungsmaschine |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE902074C (de) * | 1937-08-08 | 1954-01-18 | Fritz Oesterlen Dr Ing | Umlaufverdichter mit einem gleichachsig zum Laufrad gelegenen Seitenkanal |
US3252421A (en) * | 1962-10-16 | 1966-05-24 | Siemen & Hinsch Gmbh | Pumps |
US3356033A (en) * | 1965-10-22 | 1967-12-05 | Ford Motor Co | Centrifugal fluid pump |
NL7416205A (nl) | 1974-02-26 | 1975-08-28 | Siemens Ag | Ringvormige compressor. |
DE2531740C2 (de) * | 1975-07-16 | 1989-08-10 | British Gas Corp., London | Seitenkanalgebläse |
DE3822267A1 (de) * | 1988-03-06 | 1989-12-07 | Webasto Ag Fahrzeugtechnik | Ringkanalgeblaese |
DE4230014C1 (de) * | 1992-09-08 | 1994-03-24 | Eberspaecher J | Vorrichtung zur Reduzierung der Geräuschentwicklung bei Gebläsen |
DE4424629C1 (de) * | 1994-07-13 | 1995-03-09 | Becker Kg Gebr | Seitenkanalverdichter |
DE102004019868A1 (de) | 2004-04-23 | 2005-11-24 | J. Eberspächer GmbH & Co. KG | Gebläse, insbesondere Verbrennungsluftgebläse für ein Heizgerät |
-
2008
- 2008-11-06 DE DE102008056105A patent/DE102008056105B4/de active Active
-
2009
- 2009-09-07 EP EP09782660.6A patent/EP2342465B1/fr active Active
- 2009-09-07 WO PCT/EP2009/061514 patent/WO2010052044A1/fr active Application Filing
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
DE102008056105A1 (de) | 2010-05-20 |
EP2342465A1 (fr) | 2011-07-13 |
WO2010052044A1 (fr) | 2010-05-14 |
DE102008056105B4 (de) | 2011-02-03 |
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