EP3935283B1 - Soufflante de canal latéral - Google Patents

Soufflante de canal latéral Download PDF

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Publication number
EP3935283B1
EP3935283B1 EP19710651.1A EP19710651A EP3935283B1 EP 3935283 B1 EP3935283 B1 EP 3935283B1 EP 19710651 A EP19710651 A EP 19710651A EP 3935283 B1 EP3935283 B1 EP 3935283B1
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EP
European Patent Office
Prior art keywords
housing part
side channel
impeller
electric motor
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
Application number
EP19710651.1A
Other languages
German (de)
English (en)
Other versions
EP3935283A1 (fr
Inventor
Matthias Boutros-Mikhail
Petra DEITER
Thomas Rösgen
Alpay CAPAN
Alexander Gotter
Markus KRAWCZYK
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.)
Pierburg GmbH
Original Assignee
Pierburg GmbH
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Filing date
Publication date
Application filed by Pierburg GmbH filed Critical Pierburg GmbH
Publication of EP3935283A1 publication Critical patent/EP3935283A1/fr
Application granted granted Critical
Publication of EP3935283B1 publication Critical patent/EP3935283B1/fr
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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
    • 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
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/52—Outlet

Definitions

  • the invention relates to a side channel blower with an electric motor with a drive shaft, an impeller which is attached to the drive shaft, and a blower head with a flow channel which has a first side channel which is formed axially opposite a first row of impeller blades of the impeller and a second Has side channel, which is formed axially opposite to a second row of impeller blades of the impeller, wherein the fan head has a first housing part in which the first side channel is formed, and which axially delimits at least one space in which the electric motor is accommodated, and a second housing part, which is attached to the first housing part, in which the second side channel is formed and which has an inlet and an outlet channel.
  • Both side channel blowers and pumps are well known and are used in internal combustion engines, for example as secondary air blowers or blowers for gasoline particle filter regeneration.
  • Both side channel blowers with one side channel or with two side channels opposite each other on both axial sides of the impeller, which are connected to one another via a gap between the surrounding housing and the radial outer edge of the impeller, are known.
  • These side channel blowers are usually driven by an electric motor, on whose shaft the impeller is attached and which is arranged in a motor housing.
  • the side channels are in two flow housing parts, usually connected to one another like a flange designed, whereby the flow housing part arranged closer to the electric motor can also be designed as a motor housing if it is closed from the opposite side by a cover.
  • Such a side channel blower with two side channels is used in the DE 195 18 101 C2 disclosed.
  • the blower head is designed in two parts, with a first housing part axially delimiting the electric motor and having a side channel.
  • This housing part extends axially to an edge of the impeller remote from the electric motor and there forms a parting plane for a second housing part, which has the second side channel as well as an axial inlet and a radial outlet.
  • This parting plane also serves as a support surface through which screws are inserted for fastening the second housing part to the first housing part, which are screwed into the first housing part.
  • a side channel blower with two side channels and an inlet and an outlet is known, which are positioned towards the side channels and in which the blower head protrudes in the radially outer region over the side channel in the motor housing.
  • the DE 10 2009 006 652 A1 discloses a side channel blower in which an edge is provided at the outlet to reduce noise.
  • the fan has an axial inlet and a tangential outlet.
  • the DE 1 403 579 A discloses a turbo blower with two side channels and an exhaust channel that narrows in cross section.
  • the EP 3 045 731 A1 discloses a side channel blower with an inlet channel and an outlet channel connected to the flow channel, with steps being formed in the flow channel.
  • the task is therefore to provide a side channel blower in which assembly is simplified even with small manufacturing tolerances and the existing axial gaps are minimized.
  • the efficiency should be improved by reducing pressure losses, particularly at the outlet.
  • the outlet channel extends over the entire height and width of the flow channel, which is formed by the two side channels, the space in which the impeller blades rotate and the radial gap between the impeller and the surrounding housing.
  • the tangential arrangement of the outlet channel means that it extends along a tangent at the end of the flow channel.
  • the first housing part has a parting plane to the second housing part, which is axially offset in the direction of the second housing part to the axial end of the wall delimiting the second housing part radially outwardly and is formed radially inwardly offset to the axial end of the wall.
  • the position of the second housing part in relation to the first housing part is thus determined in the radial direction.
  • the parting plane is arranged axially slightly closer to the electric motor than the axial ends of the first row of impeller blades facing the electric motor. This arrangement of the parting plane allows the impeller to be mounted with a defined gap to the first housing part, for example by placing a distance gauge on the second housing part, onto which the impeller is in turn placed and connected to the impeller in this position.
  • the axial end of the wall of the second housing part projects into a circumferential axial groove in the first housing part.
  • the position of the first housing part in relation to the second housing part is clearly defined, so that errors during assembly are avoided.
  • various fastening options such as welding, gluing or screwing, can be easily carried out.
  • a meterable seal in particular a liquid seal, is arranged in the circumferential axial groove between the first housing part and the second housing part, whereby a tight attachment between the two housing parts is ensured and leaks through a gap between the two housing parts are avoided.
  • the attachment can be done detachably by screwing
  • the hub of the impeller has a transition fit to the drive shaft and is materially connected to the drive shaft.
  • the impeller is not subjected to bending loads, as would be the case when pressing on to produce a press connection.
  • the impeller can be pushed onto the drive shaft with a small force and positioned in its correct position and held, for example, by a distance gauge and then materially connected to the drive shaft in this position, whereby the axial gap between the first housing part and the impeller is set very precisely can be.
  • a further simplification of the structure of the side channel blower results from the fact that the first housing part radially surrounds the electric motor, so that no additional component has to be used to accommodate the electric motor.
  • the drive shaft of the electric motor is preferably mounted in a wall of the first housing part that axially delimits the electric motor.
  • An axial displacement of the electric motor or the Drive shaft relative to the first housing part is prevented accordingly, so that the axial gap can be chosen to be very narrow.
  • the first housing part can also serve directly as a bearing shield of the electric motor, so that its position in the housing is also determined using simple means.
  • the impeller is made from a thermoset, which has a high level of durability at low manufacturing costs.
  • a side channel blower is thus created which has a very high level of efficiency, since pressure losses are reduced by avoiding constrictions in the area of the outlet channel and short-circuit flows along the inside of the impeller are reduced due to its very small adjustable axial gap compared to known designs, without reducing the manufacturing costs climb.
  • Figure 1 shows a side view of a section of a side channel blower according to the invention in a sectional view.
  • the Figure 2 shows the section according to Figure 1 before assembling a second housing part
  • the side channel blower according to the invention has an electric motor 10, which is accommodated in a space 11, which in the present exemplary embodiment is formed in a first housing part 12, and which is closed on a rear side of the electric motor 10 by a cover, not shown.
  • the first housing part 12 forms a fan head 18 with a second housing part 16, in which an impeller 20 is rotatably arranged, which is attached to a drive shaft 22 of the electric motor 10.
  • the first housing part 12 has a central opening 26 in a wall 24 that axially delimits the fan head 18 to the electric motor 10, through which, on the one hand, the drive shaft 22 protrudes into the fan head 18 and to the impeller 20 and, on the other hand, is designed as a receptacle 28 of a motor bearing 30.
  • a first side channel 32 is formed in the axially delimiting wall 24 of the first housing part 12 on the side facing the impeller 20. This interacts with a first row 34 of impeller blades 36 evenly distributed over the radially outer circumference of the impeller 20.
  • the blower head 18 additionally has the second housing part 16, in which a second side channel 40 is formed, which is formed axially opposite to a second row 42 of impeller blades 36 and cooperates with them.
  • this second housing part 16 has a wall 46 which radially delimits a flow channel 44, which radially surrounds the impeller 20 and delimits the housing part 16 radially on the outside over the circumference, a gap 48 being formed between the impeller 20 and the wall 46.
  • the flow channel 44 accordingly consists of the two side channels 32, 40 and the area through which flows between the impeller blades 36 and the gap 48.
  • an axial inlet channel 49 is formed on the first housing part 12, which extends axially next to the space 11 and merges into the second housing part 16, where the pumped gas enters the side channels 32, 40 axially via an inlet 50.
  • the two side channels 32, 40 and the wall 46 have a common, invisible interruption area between the outlet channel 52 and the inlet 50, in which the wall 46 and the floors 53, 54 delimiting the side channels have an elevation, so that around the impeller 20 only minimal gaps are formed over the interruption area, so that a flow from the outlet channel 52 to the inlet channel 49 is minimized.
  • the impeller blades 36 are formed on an outer circumference of the impeller 20 and are bent or V-shaped in the direction of rotation of the impeller 20 from their radially inner end to the radially outer end.
  • the two rows 34, 42 are separated from one another by a partition 56 at least up to approximately the middle of the radial extent of the impeller blades 36, while in the radially outer region the impeller blades 36 of the first row 34 and the second row 42 merge into one another, so that in this area an exchange between the two vortex flows in the two side channels 32, 40 can take place.
  • the first housing part 12 has a support surface 58, to which the second housing part 16 is fastened by means of screws 59, which is designed as an axial groove 60, which in the present exemplary embodiment is located approximately at the level of the receptacle 28 for the motor mount 30 and is therefore axially closer according to the invention to the electric motor 10 is arranged as the bottom 53 of the first side channel 32, namely in the area in which the side channel 32 opens into the outlet channel 52.
  • the wall 46 extends axially in this area into the axial groove 60, so that an axial end 61 of the wall 46 is also axially closer to the Electric motor 10 is arranged as the bottom 53 of the first side channel 32.
  • the outlet channel 52 is correspondingly designed with a cross section which has a largely continuous transition to the flow channel 44, which is therefore approximately in height from the bottom 53 of the first side channel 32 to the floor 54 of the second side channel 40 extends and its width also corresponds approximately to the width of the flow channel 44 or the side channels 32, 40.
  • the circumferential axial groove 60 of the support surface 58 is made wider in the areas of the screw connection, so that the wall 46 of the second housing part 16 is designed with widenings at its axial end 61 corresponding to the shape of the axial groove 60, in which the holes for receiving the screws 59 will be included. Accordingly, the axial end 61 of the wall 46 rests in the axial groove 60.
  • a meterable seal 62 in particular a liquid seal, is arranged in the axial groove 60 between the axial end 61 and the support surface 58.
  • the axial groove 60 is located immediately radially adjacent to a radially outer boundary wall 64 of the first side channel 32, which extends axially perpendicularly from the support surface 58 in the direction of the second housing part 16.
  • This boundary wall 64 on the inside of which the first side channel 32 is formed, extends up to a parting plane 66 which runs parallel to the support surface 58 of the first housing part 12 and which is arranged only 0.1 to 1 mm axially closer to the electric motor 10 than the impeller 20 in its installed state. This means that the axial gap between the impeller 20 and the first housing part 12 is precisely defined between this parting plane 66 and the impeller 20.
  • a distance gauge or similar which has the width of the axial gap, can be placed on the parting plane 66 and then the impeller 20 with its Hub 68 can be slipped over the drive shaft 22 so that the desired axial gap is established by resting the impeller 20 on the distance gauge.
  • a transitional or small clearance fit is selected between a hub 68 and the drive shaft 22, since then there is no need to support the drive shaft 22.
  • the hub 68 is fastened in this position to the drive shaft 22 in a materially bonded manner, or by welding, laser welding or gluing.
  • the distance gauge can then be removed and the desired axial gap is set without any force having to be exerted on the drive shaft 22 or an impeller 20 made, for example, from thermoset. Accordingly, deformation during assembly can be reliably avoided.
  • the assembly of the second housing part 16 is then carried out by pushing this housing part 16 over the radially outer boundary wall 64 and against the support surface 58 into the axial groove 60.
  • the end of the wall 46 rests on the support surface 58, while a shoulder of the second housing part 16 is arranged adjacent to the boundary wall 64 and slightly spaced from the end of the boundary wall 64.
  • the connection between the two housing parts 12, 16 can then be made by screws, and fastening can also be made by gluing or, if necessary, welding.
  • Such a side channel blower has a very high level of efficiency due to the precise adjustment of the gap and the precise alignment of the impeller on the drive shaft resulting from assembly, as leakage flows can be minimized.
  • the pressure loss is due to the large cross section of the Exhaust channel and the avoidance of cross-sectional jumps are reduced and the efficiency is additionally increased.
  • the design of the side channels or the impeller or the division of the first housing part can be modified.
  • the electric motor can also be accommodated in a space closed on the back by a motor housing, which is only axially limited by the first housing part on the side facing the flow channel.
  • the parting plane can also be used as a support surface for the two housing parts and the support surface of the exemplary embodiment can instead be arranged at a short distance from the axial groove.

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

Claims (9)

  1. Ventilateur à canal latéral avec
    un moteur électrique (10) avec un arbre d'entraînement (22),
    une turbine (20) fixée sur l'arbre d'entraînement (22),
    une tête de ventilateur (18) avec un canal d'écoulement (44) comprenant un premier canal latéral (32) formé axialement en face d'une première rangée (34) d'aubes de turbine (36) de la turbine (20) et comprenant un deuxième canal latéral (40),
    qui est axialement opposé à une deuxième rangée (42) d'aubes de turbine (36) de la turbine (20),
    la tête de ventilateur (18) comprenant une première partie de boîtier (12) dans laquelle le premier canal latéral (32) est formé et qui délimite axialement au moins un espace (11) dans lequel le moteur électrique (10) est logé, et une deuxième partie de boîtier (16) qui est fixée à la première partie de boîtier (12), dans laquelle le deuxième canal latéral (40) est formé et qui comprend une entrée (50) et un canal de sortie (52), et
    une extrémité axiale (61) d'une paroi (46) délimitant la deuxième partie de boîtier (16) radialement vers l'extérieur étant disposée axialement plus près du moteur électrique (10) qu'un fond (53) du premier canal latéral (32) directement en amont du canal de sortie (52) et
    dans lequel le canal de sortie (52) s'étend à partir de la deuxième partie de boîtier (16) de manière tangentielle au canal d'écoulement (44) et comprend une section transversale qui correspond au moins à la section transversale du canal d'écoulement (44) directement en amont du canal de sortie (52) dans la tête de ventilateur (18).
  2. Ventilateur à canal latéral selon la revendication 1,
    caractérisé en ce que
    la première partie de boîtier (12) comprend un plan de division (66) par rapport à la deuxième partie de boîtier (16), qui est décalé axialement en direction de la deuxième partie de boîtier (16) par rapport à l'extrémité axiale (71) de la paroi (46) délimitant la deuxième partie de boîtier (16) vers l'extérieur dans le sens radial et qui est décalé radialement vers l'intérieur par rapport à l'extrémité axiale (61) de la paroi (46).
  3. Ventilateur à canal latéral selon la revendication 2,
    caractérisé en ce que
    le plan de division (66) est disposé axialement plus près du moteur électrique (10) que les extrémités axiales de la première rangée (34) d'aubes de turbine (36) orientées vers le moteur électrique (10).
  4. Ventilateur à canal latéral selon l'une des revendications précédentes,
    caractérisé en ce que
    l'extrémité axiale (61) de la paroi (46) de la deuxième partie de boîtier (16) fait saillie dans une rainure axiale périphérique (60) ménagée dans la première partie de boîtier (12).
  5. Ventilateur à canal latéral selon la revendication 4,
    caractérisé en ce que
    un élément d'étanchéité réglable (62) est disposé dans la rainure axiale périphérique (60) entre la première partie de boîtier (12) et la deuxième partie de boîtier (16).
  6. Ventilateur à canal latéral selon l'une des revendications précédentes,
    caractérisé en ce que
    le moyeu (68) de la turbine (20) comprend un ajustement de transition avec l'arbre d'entraînement (22) et est relié à l'arbre d'entraînement (22) par une liaison de matière.
  7. Ventilateur à canal latéral selon l'une des revendications précédentes,
    caractérisé en ce que
    la première partie de boîtier (12) entoure radialement le moteur électrique (10).
  8. Ventilateur à canal latéral selon l'une des revendications précédentes,
    caractérisé en ce que
    l'arbre d'entraînement (22) du moteur électrique (10) est supporté dans une paroi (24) de la première partie de boîtier (12) qui délimite axialement le moteur électrique (10).
  9. Ventilateur à canal latéral selon l'une des revendications précédentes,
    caractérisé en ce que
    la turbine (20) est fabriquée en une matière plastique thermodurcissable.
EP19710651.1A 2019-03-08 2019-03-08 Soufflante de canal latéral Active EP3935283B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2019/055833 WO2020182270A1 (fr) 2019-03-08 2019-03-08 Soufflante de canal latéral

Publications (2)

Publication Number Publication Date
EP3935283A1 EP3935283A1 (fr) 2022-01-12
EP3935283B1 true EP3935283B1 (fr) 2024-01-10

Family

ID=65763445

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19710651.1A Active EP3935283B1 (fr) 2019-03-08 2019-03-08 Soufflante de canal latéral

Country Status (2)

Country Link
EP (1) EP3935283B1 (fr)
WO (1) WO2020182270A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115095555A (zh) * 2022-07-25 2022-09-23 中国华能集团清洁能源技术研究院有限公司 调压组件及压力匹配器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1403579A1 (de) * 1961-03-04 1969-07-17 Obermaier & Cie Turbogeblaese
US5527149A (en) 1994-06-03 1996-06-18 Coltec Industries Inc. Extended range regenerative pump with modified impeller and/or housing
DE102007045480A1 (de) * 2007-09-21 2009-04-02 DüRR DENTAL AG Rad, insbesondere Laufrad eines Verdichters
DE102009006652B4 (de) * 2009-01-29 2014-06-18 Pierburg Gmbh Seitenkanalgebläse, insbesondere Sekundärluftgebläse für eine Verbrennungskraftmaschine
JP5885986B2 (ja) * 2011-10-04 2016-03-16 日本電産サンキョー株式会社 ポンプ装置
DE102015000264A1 (de) * 2015-01-16 2016-07-21 Pierburg Gmbh Gebläse zur Förderung von Wasserstoff in einem Brennstoffzellensystem eines Kraftfahrzeugs
WO2019120550A1 (fr) * 2017-12-21 2019-06-27 Pierburg Gmbh Ventilateur à canal latéral, notamment ventilateur à aire secondaire pour moteur à combustion interne

Also Published As

Publication number Publication date
WO2020182270A1 (fr) 2020-09-17
EP3935283A1 (fr) 2022-01-12

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