EP2342464A1 - Side channel blower, in particular secondary air blower for an internal combustion engine - Google Patents
Side channel blower, in particular secondary air blower for an internal combustion engineInfo
- Publication number
- EP2342464A1 EP2342464A1 EP09736401A EP09736401A EP2342464A1 EP 2342464 A1 EP2342464 A1 EP 2342464A1 EP 09736401 A EP09736401 A EP 09736401A EP 09736401 A EP09736401 A EP 09736401A EP 2342464 A1 EP2342464 A1 EP 2342464A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- channel
- conveying
- blower
- outlet
- housing part
- 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
- 238000002485 combustion reaction Methods 0.000 title claims description 8
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 19
- 230000010349 pulsation Effects 0.000 abstract description 5
- 230000009467 reduction Effects 0.000 abstract description 4
- 230000003068 static effect Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
- F04D29/40—Casings; Connections of working fluid
- F04D29/403—Casings; Connections of working fluid especially adapted for elastic fluid pumps
Definitions
- the invention relates to side channel blower, in particular secondary air blower for an internal combustion engine with a housing in which an inlet and an outlet is formed, a housing part in which a substantially annular extending conveyor channel is arranged, an impeller which is rotatably mounted in the housing and conveyor blades has, which cooperate with the opposite conveying channel, a
- DE 42 20 153 A1 proposes a side channel blower in which a cross-section reducer extends from the middle of the delivery channel between inlet and outlet until shortly before the outlet opening.
- a cross-section reducer extends from the middle of the delivery channel between inlet and outlet until shortly before the outlet opening.
- the object of the invention is therefore to design a side channel blower so that with the same size, an increased delivery volume can be achieved and at the same time an increased noise level can be avoided by pulsations and tearing flows.
- This object is achieved in that the radial extent of the cross-sectional reducer increases steadily from the inlet to the outlet and the conveying channel has in cross-section two paragraphs to adjoining wall surfaces of the conveying channel. It has been found that in such a design of the cross-section reducer, the delivery volume can be increased at about the same achievable static pressure and at the same time noise emissions can be reduced by preventing turbulence when entering the air from the feed channel in the impeller.
- the cross-sectional reducer reduces the conveying channel depth by a constant difference in the circumferential direction and in the radial direction.
- Such an embodiment of the Queritessverminderers is relatively easy to produce in automated systems. Even with a small difference of 0.1 mm to 2 mm in the delivery channel depth a significant improvement in terms of noise emissions and achievable delivery volume is available.
- the Querterrorismsverminderer is made in one piece with the housing part, so that additional components omitted.
- the housing consists at least of a first housing part and a second housing part, in each of which a delivery channel is formed, wherein in both conveyor channels a Querterrorismsverminderer is arranged.
- a side channel blower in which a larger volume of air can be delivered while maintaining the maximum pressure and at the same time the noise level is reduced.
- Figure 1 shows a side view of a side channel blower in a sectional view.
- Figure 2 shows a plan view of a cover part of a side channel blower according to the invention from the direction of the impeller.
- FIG. 3 shows a sectional view along the line A-A of the cover part shown in FIG.
- Figure 4 shows a plan view of a second housing part of a side channel blower according to the invention from the direction of the impeller.
- FIG. 5 shows a sectional view along the line A-A of the second housing part shown in FIG.
- the side channel blower shown in Figure 1 consists of a two-part housing 2 and a rotatably mounted in the housing 2 and driven by a drive unit 3 impeller 4, for example for the promotion of 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. To be reliable one
- the delivery channel 12 arranged in the cover part 10 has a substantially constant width b and, with the exception of the interruption region 28, extends over the circumference of the cover part 10.
- the impeller 4 rotates clockwise from the inlet region 8 to the end of the delivery channel 12 and then over the interruption region 28, from where a single pocket 26 is again passed over the inlet region 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.
- annular ridge 46 is formed, which engages after assembly of the blower in a corresponding groove 48 of the impeller 4, whereby a
- the cover part 10 has a cylindrical recess 50 into which the drive shaft 19 of the drive unit 3 projects.
- a cross-sectional reducer 52 which is shown hatched in FIG. 2, is arranged in the conveying channel 12 of the cover part 10. This extends over the entire length of the conveying channel 12, starting shortly after the inlet region 8 and ending axially opposite to the second housing part 16 formed on the outlet 20.
- the width of the Querterrorismsverminderers 52 thereby increases from the inlet portion 8 to the outlet 20. This means that the outer circumference spirally grows from the inlet portion 8 to the outlet 20 while the inner circumference of the Quer4.000sverminderers 52 remains constant.
- the cross-sectional shape of the cross-sectional reducer 52 can be seen in FIG. With respect to a subsequent wall surface 54 of the delivery channel 12, the surface area of the cross-section reducer 52 has a minimum constant height of about 0.1 mm to 2 mm.
- the wall surface 54 of the conveying channel 12 which is usually continuous in cross-section, has two shoulders 56 each at the transition between conveying channel 12 without cross-sectional reducer 52 and conveying channel 12 with cross-sectional reducer 52.
- the paragraphs 56 reduce the pressure pulsations occurring and thus lead to lower noise emissions.
- the Querterrorismsverminderer 58 extends over the entire length of the conveying channel 14 in the second housing part 16, starting just behind the opposite to the lid portion 10 formed on the inlet portion 8 and ending at the outlet 20.
- the width of the 15 Querterrorismsverminderers 58 also grows from the inlet portion 8 to the outlet 20, however, in the cross-section reducer 58, the outer circumference remains constant over the running length, while the inner circumference becomes less helical toward the outlet 20.
- the operation corresponds to the operation of the Quer4.000sverminderers 52 in the lid part
- the second housing part 16 to the bolts 34 and holes 30 of the cover part corresponding holes 62 threaded and non-threaded holes 64 for the bolts 34 which are formed on 25 radially extending projections 66.
- Further bores 68 serve for fastening the drive unit 3 via screws 70 shown in FIG. 1.
- Central to the housing part 16 is a through-bore 72 for receiving the bearing 18 of the drive shaft 19.
- the cross-sectional reducers 52, 58 provide for a steadily reducing from the inlet portion 8 to the outlet 20 available standing flow cross-section.
- the maximum delivery volume is increased, while the paragraphs 56, 60 in the two delivery channels 12, 14, the speed and uniformity of the vortex flow is reduced, whereby pulsations in the transition from the delivery channels 12, 14 are avoided in the pockets 26, so that the Noise level of the side channel blower is reduced.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008056106A DE102008056106B4 (en) | 2008-11-06 | 2008-11-06 | Side channel blower, in particular secondary air blower for an internal combustion engine |
PCT/EP2009/062997 WO2010052082A1 (en) | 2008-11-06 | 2009-10-07 | Side channel blower, in particular secondary air blower for an internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2342464A1 true EP2342464A1 (en) | 2011-07-13 |
EP2342464B1 EP2342464B1 (en) | 2018-03-28 |
Family
ID=41650220
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09736401.2A Active EP2342464B1 (en) | 2008-11-06 | 2009-10-07 | Side channel blower, in particular secondary air blower for an internal combustion engine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2342464B1 (en) |
DE (1) | DE102008056106B4 (en) |
WO (1) | WO2010052082A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012221916A1 (en) * | 2012-11-29 | 2014-06-05 | BSH Bosch und Siemens Hausgeräte GmbH | Housing for a radial fan and radial fan |
EP3728860B1 (en) * | 2017-12-21 | 2021-10-13 | Pierburg GmbH | Side channel blower, in particular secondary air blower for an internal combustion engine |
US11248618B1 (en) * | 2019-03-13 | 2022-02-15 | Airtech Group, Inc. | O-ring for side channel blower and side channel blower including said o-ring |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2015200A (en) * | 1931-01-12 | 1935-09-24 | Spoor Willem Lodewijk Joost | Rotary pump |
DE876285C (en) * | 1940-09-29 | 1953-05-11 | Siemens Ag | Ring compressor |
IT1240003B (en) * | 1990-04-24 | 1993-11-27 | Nuovopignone-Industrie Meccaniche Efonderia | IMPROVEMENTS IN A TOROIDAL CHAMBER REGENERATIVE TYPE COMPRESSOR |
KR970005981B1 (en) * | 1991-06-18 | 1997-04-22 | 가부시기가이샤 히다찌세이사뀨쇼 | Vortex flow blower |
-
2008
- 2008-11-06 DE DE102008056106A patent/DE102008056106B4/en not_active Expired - Fee Related
-
2009
- 2009-10-07 EP EP09736401.2A patent/EP2342464B1/en active Active
- 2009-10-07 WO PCT/EP2009/062997 patent/WO2010052082A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2010052082A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102008056106A1 (en) | 2010-05-20 |
EP2342464B1 (en) | 2018-03-28 |
DE102008056106B4 (en) | 2011-02-17 |
WO2010052082A1 (en) | 2010-05-14 |
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