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EP4547970A1 - Soufflante - Google Patents

Soufflante

Info

Publication number
EP4547970A1
EP4547970A1 EP22737884.1A EP22737884A EP4547970A1 EP 4547970 A1 EP4547970 A1 EP 4547970A1 EP 22737884 A EP22737884 A EP 22737884A EP 4547970 A1 EP4547970 A1 EP 4547970A1
Authority
EP
European Patent Office
Prior art keywords
chamber
motor
electronics
impeller
blower
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.)
Pending
Application number
EP22737884.1A
Other languages
German (de)
English (en)
Inventor
Alexander Gotter
Thomas Rösgen
Patrick SUTTY
Matthias Boutros-Mikhail
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pierburg GmbH filed Critical Pierburg GmbH
Publication of EP4547970A1 publication Critical patent/EP4547970A1/fr
Pending legal-status Critical Current

Links

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
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/068—Mechanical details of the pump control unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5813—Cooling the control unit
    • 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
    • F05D2260/00—Function
    • F05D2260/60—Fluid transfer
    • F05D2260/608—Aeration, ventilation, dehumidification or moisture removal of closed spaces

Definitions

  • the present invention relates to a blower, in particular a blower for an internal combustion engine, comprising: a housing on which a suction opening and an outlet opening are formed and which forms a delivery chamber, a motor chamber and an electronics chamber, the housing being designed such that a fluid can be conveyed from the suction opening through the motor chamber and the delivery chamber to the outlet opening, an impeller which is arranged in the delivery chamber, the delivery chamber and the impeller being designed such that a fluid is conveyed through the delivery chamber when the impeller rotates, an electric motor, which is arranged in the motor chamber and is designed to drive the impeller in rotation, and motor electronics, which is arranged in the electronics chamber and is designed to control the electric motor to drive the impeller.
  • an axial direction is parallel to an axis of rotation of the impeller
  • a radial direction is perpendicular to the axis of rotation of the impeller
  • a transverse plane is transverse to the axis of rotation of the impeller.
  • a generic blower is known from US 2016/0238031 Al. Because a pumped fluid flows around the electric motor arranged in the motor chamber during operation of the fan, efficient cooling of the electric motor is achieved. This allows the fan to be left on for a relatively long period of time. However, damage can occur due to contaminants and/or liquids introduced into the electronics chamber via the fluid flow sucked in in the engine electronics, which can impair the functionality of the blower or even result in total failure of the blower.
  • the task is to create a reliable blower that enables relatively long switch-on times.
  • the blower according to the invention comprises a housing on which a suction opening and an outlet opening are formed and which forms a delivery chamber, a motor chamber and an electronics chamber.
  • the housing is designed in such a way that a fluid can be conveyed from the suction opening through the motor chamber and the delivery chamber to the outlet opening.
  • a fluid is conveyed into the housing via the suction opening, then conveyed through the motor chamber and the delivery chamber, and finally conveyed out of the housing via the outlet opening.
  • the motor chamber can be arranged both upstream and downstream of the delivery chamber.
  • the housing comprises a plurality of housing parts, which are preferably axially attached to one another in order to enable relatively simple assembly of the blower.
  • a suction port is formed on the housing, which forms the suction opening, and an outlet port is formed, which forms the outlet opening.
  • the blower according to the invention comprises an impeller which is arranged in the delivery chamber.
  • the impeller can be, for example, a side channel pump impeller or a radial pump impeller.
  • the delivery chamber and the impeller are designed in such a way that that when the impeller rotates, a fluid is conveyed through the delivery chamber.
  • the delivery chamber and the impeller are designed in such a way that when the impeller rotates, a fluid is sucked into the delivery chamber, conveyed through the delivery chamber, and ejected from the delivery chamber.
  • the fluid can either be sucked from the motor chamber into the delivery chamber or be expelled from the delivery chamber into the motor chamber.
  • the delivery chamber is preferably formed by two housing parts that are axially attached to one another.
  • the blower according to the invention comprises an electric motor which is arranged in the motor chamber and is designed to rotationally drive the impeller.
  • the electric motor includes a motor stator and a motor rotor that cooperate in a known manner to rotationally drive the motor rotor.
  • the motor stator comprises at least one electromagnetic stator winding and the motor rotor is permanently magnetized.
  • the electric motor is designed as an internal rotor, with the motor stator radially surrounding the motor rotor, and the electric motor is commutated electronically.
  • the electric motor is designed as an external rotor, with the motor rotor radially surrounding the motor stator and/or being commutated via a mechanical commutator.
  • the impeller is designed to rotate with the motor rotor.
  • the impeller is connected to the motor rotor via a rotor shaft.
  • the impeller is designed in one piece with the motor rotor.
  • the blower according to the invention comprises motor electronics which are arranged in the electronics chamber and are designed to control the electric motor in a known manner to drive the impeller.
  • the engine electronics includes a large number of electronic components and at least one circuit board on which the electronic components are arranged.
  • the motor electronics preferably comprises a plurality of power semiconductor switches for electronic commutation of a drive current provided to the electric motor.
  • the housing has a pressure compensation opening, via which the electronics chamber is fluidly connected to the motor chamber, a pressure compensation element being arranged on the pressure compensation opening, which is designed to enable gas exchange between the electronics chamber and the motor chamber via the pressure compensation opening and an entry of liquid from the motor chamber via the pressure equalization opening into the electronics chamber.
  • the pressure compensation element comprises a membrane that is permeable to gases but impermeable to liquids and solids. The membrane is arranged in such a way that fluid exchange between the electronics chamber and the motor chamber can take place exclusively through the membrane via the pressure equalization opening.
  • the pressure compensation element according to the invention reliably prevents liquids and/or contaminants that are potentially harmful to the engine electronics from penetrating into the electronics chamber. Because the pressure compensation element is arranged according to the invention inside the housing, it is generally relatively sensitive Pressure compensation element is reliably protected from environmental influences, such as splash water or stone chips. This creates a fan that works reliably even with relatively long switch-on times.
  • the motor chamber is fluidly arranged between the suction opening and the delivery chamber, so that the fluid delivered has a particularly low temperature as it flows through the motor chamber. This enables efficient cooling of the electric motor arranged in the motor chamber.
  • a fluidic inlet of the motor chamber and a fluidic outlet of the motor chamber are arranged at different axial heights, so that the pumped fluid flows through the motor chamber axially.
  • the fluidic inlet of the motor chamber and the fluidic outlet of the motor chamber are arranged on opposite axial sides of the electric motor, so that the delivered fluid flows completely around the electric motor. This enables efficient cooling of the electric motor.
  • a housing part which forms a housing wall separating the electronics chamber from the motor chamber, consists of a material with a relatively high thermal conductivity, particularly preferably a metal. This enables efficient cooling of the engine electronics arranged in the electronics chamber.
  • the electronics chamber preferably surrounds the motor chamber at least partially radially. This creates a particularly large common housing wall area between the electronics chamber and the motor chamber, so that the electronics chamber can be separated from the
  • the housing wall separating the motor chamber allows a particularly large amount of heat to be dissipated from the electronics chamber into the motor chamber. This enables efficient cooling of the motor electronics arranged in the electronics chamber.
  • At least one cooling dome is formed which projects in the direction of the motor electronics and is in thermal contact with an electronic component and/or a circuit board of the motor electronics.
  • the thermal contact can be realized either through direct physical contact or via a heat transfer medium arranged between the cooling dome and the electronic component or the circuit board, such as a thermal pad or a thermal paste, whereby the heat transfer medium communicates with both the cooling dome and with the Electronic component or the circuit board is in direct physical contact.
  • the at least one cooling dome is formed on a housing wall section that extends essentially in a transverse plane and protrudes axially from the housing wall.
  • cooling domes designed in this way, which are in thermal contact with different electronic components and/or circuit board sections of the motor electronics.
  • a particularly large amount of waste heat is typically generated by power semiconductor components of the motor electronics, which is why preferably at least one cooling dome is in thermal contact with a power semiconductor component of the motor electronics or with an area of the circuit board on which a power semiconductor component is arranged.
  • the at least one cooling dome creates a material and therefore particularly good heat-conducting connection of individual components of the engine electronics to the housing wall separating the electronics chamber from the motor chamber, which is supported on the motor chamber side Fluid flows around. This enables particularly efficient cooling, especially of components of the engine electronics that heat up significantly during operation.
  • the housing preferably forms a suction channel comprising the suction opening, such that the suction channel and the electronics chamber have a common housing wall section. Fluid with a particularly low temperature flows around this common housing wall section on the intake channel side, which enables efficient cooling of the engine electronics arranged in the electronics chamber.
  • the delivery chamber and the impeller are preferably designed in such a way that they form a side channel delivery unit.
  • the delivery chamber includes at least one side channel.
  • the delivery chamber preferably comprises two axially opposite side channels, between which the impeller is arranged.
  • the two side channels are preferably formed by two different housing parts.
  • the blower can be equipped with a particularly powerful electric motor, wherein a motor stator of the electric motor comprises at least one stator winding, preferably at least six stator windings.
  • Figure 1 is a side view of a blower according to the invention in a sectional view
  • Figure 2 is a top view of a delivery chamber of the blower in a sectional view.
  • the figures show a blower 10 according to the invention with a housing 12, which consists of a first housing part 121, a second housing part 122, a third housing part 123 and a fourth housing part 124, which are arranged axially one on top of the other and each consist of a metal.
  • the first housing part 121 and the second housing part 122 form a delivery chamber 14 in which an impeller 16 is arranged.
  • the second housing part 122 and the third housing part 123 form a substantially cylindrical motor chamber 18 in which an electric motor 20 is arranged.
  • the third housing part 123 and the fourth housing part 124 form an electronics chamber 22, in which motor electronics 24 is arranged and which comprises a substantially annular chamber region 221 which radially surrounds a first axial end region of the motor chamber 18.
  • a suction port 1231 is formed on the third housing part 123, which forms a suction channel 1239 with a suction opening 1232.
  • the suction channel 1239 opens into the first axial end region of the motor chamber 18 facing the electronics chamber 22.
  • the third housing part 123 is designed such that the suction channel 1239 and the electronics chamber 22 have a common housing wall section 1233.
  • An outlet port 1211 is formed on the first housing part 121, which forms an outlet channel 1213 with an outlet opening 1212.
  • the outlet channel 1213 is connected to the delivery chamber 14.
  • a passage 1221 is formed in the second housing part 122, which fluidly connects the delivery chamber 14 to the motor chamber 18, so that a fluid flows from the suction opening 1232 through the suction channel 1239, the motor chamber 18, the delivery chamber 14, and the outlet channel 1213 to the outlet opening 1212 can be promoted.
  • a fluidic inlet 181 of the motor chamber 18 formed by the intake channel 1239 and a fluidic outlet 182 of the motor chamber 18 formed by the passage 1221 are consequently arranged at opposite axial end regions of the motor chamber 18, so that the motor chamber 18 is essentially completely axially flowed through by a conveyed fluid .
  • a pressure compensation opening 1235 is formed, which fluidly connects the electronics chamber 22 to the motor chamber 18.
  • a pressure compensation element 32 is arranged at the pressure compensation opening 1235 and is designed to enable gas exchange between the electronics chamber 22 and the motor chamber 18 via the pressure compensation opening 1235, but to prevent liquid from entering the motor chamber 18 via the pressure compensation opening 1235 into the electronics chamber 22 .
  • the pressure compensation element 32 is a gas-permeable and liquid-impermeable membrane which is arranged directly on the pressure compensation opening 1235 and completely covers it, so that a fluid exchange between the electronics chamber 22 and the motor chamber 18 via the pressure compensation opening 1235 can take place exclusively through the membrane.
  • a cooling dome 1237 is also formed on the common housing wall section 1233 between the intake channel 1239 and the electronics chamber 22.
  • the impeller 16 and the delivery chamber 14 are designed such that they form a side channel delivery unit 26, which is set up in a known manner to convey a fluid through the delivery chamber 14 when the impeller 16 rotates.
  • the impeller 16 comprises a plurality of impeller blades 161 arranged distributed along its circumference.
  • the delivery chamber 14 comprises a first side channel 141, which is arranged on a first axial side of the impeller 16 facing away from the electric motor 20 and is formed by the first housing part 121, and a second side channel 142, which is arranged on a second axial side of the impeller 16 facing the electric motor 20 and is formed by the second housing part 122.
  • the impeller 16 is attached to a drive shaft 28 which is rotatably mounted in the housing 12.
  • the electric motor 20 includes a motor stator 201 fixed in the housing 12 and a motor rotor 202 fixed to the drive shaft 28.
  • the motor stator 201 comprises a laminated stator body 2011, on which six stator windings 2012 are arranged in the present exemplary embodiment.
  • the motor rotor 202 is permanent magnetic.
  • the motor stator 201 and the motor rotor 202 work together in a known manner to drive the motor rotor 202 and thus the drive shaft 28 by appropriately controlling the Stator winding 2012 to drive rotationally.
  • Winding ends 2013 of the stator windings 2012 extend in the axial direction through openings 1238 formed in the third housing part 123 into the electronics chamber 22, with a gap between the winding ends 2013 and the third housing part 123 being sealed by a sealant 30.
  • the engine electronics 24 includes a circuit board 241 on which a large number of electronic components, not shown, are arranged.
  • the motor electronics 24 is electrically connected to the winding ends 2013 of the stator windings 2012 and is set up to control the winding ends 2013 in a known manner to drive the motor rotor 202 and thus the impeller 16.
  • the motor electronics 24 is arranged in the electronics chamber 22 in such a way that the circuit board 241 and/or electronic components arranged thereon are in direct thermal contact with the cooling domes 1236, 1237.
  • Power semiconductor components of the motor electronics are advantageously arranged on those areas of the circuit board 241 that are in direct thermal contact with the cooling domes 1236, 1237 and/or the power semiconductor components are arranged in direct thermal contact with a cooling dome 1236, 1237.

Landscapes

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

Abstract

L'invention concerne une soufflante (10) comprenant : un logement (12) sur lequel sont formées une ouverture d'admission (1232) et une ouverture de sortie (1212) et qui forme une chambre de transport (14), une chambre de moteur (18) et une chambre électronique (22), le logement (12) étant conçu de telle sorte qu'un fluide peut être transporté depuis l'ouverture d'admission (1232), à travers la chambre de moteur (18) et la chambre de transport (14), jusqu'à l'ouverture de sortie (1212) ; une roue (16) qui est disposée dans la chambre de transport (14), la chambre de transport (14) et la roue (16) étant conçues de telle sorte qu'un fluide est transporté à travers la chambre de transport (14) lorsque la roue (16) se met en rotation ; un moteur électrique (20) qui est disposé dans la chambre de moteur (18) et qui est conçu pour entraîner la roue (16) en rotation ; et une unité électronique de moteur (24) qui est disposée dans la chambre électronique (22) et qui est conçue pour commander le moteur électrique (20) afin d'entraîner la roue (16), le logement (12) ayant une ouverture d'égalisation de pression (1235) par l'intermédiaire de laquelle la chambre électronique (22) est en communication fluidique avec la chambre de moteur (18), un élément d'égalisation de pression (32) étant disposé au niveau de l'ouverture d'égalisation de pression (1235) et étant conçu pour permettre l'échange de gaz entre la chambre électronique (22) et la chambre de moteur (18) par l'intermédiaire de l'ouverture d'égalisation de pression (1235) et pour empêcher le liquide de s'infiltrer dans la chambre électronique (22) par l'intermédiaire de l'ouverture d'égalisation de pression (1235).
EP22737884.1A 2022-06-28 2022-06-28 Soufflante Pending EP4547970A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2022/067771 WO2024002469A1 (fr) 2022-06-28 2022-06-28 Soufflante

Publications (1)

Publication Number Publication Date
EP4547970A1 true EP4547970A1 (fr) 2025-05-07

Family

ID=82404113

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22737884.1A Pending EP4547970A1 (fr) 2022-06-28 2022-06-28 Soufflante

Country Status (3)

Country Link
EP (1) EP4547970A1 (fr)
CN (1) CN119522325A (fr)
WO (1) WO2024002469A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007012703A1 (de) * 2006-12-22 2008-06-26 Robert Bosch Gmbh Druckausgleichselement für ein Gehäuse und Kraftfahrzeug-Elektrokomponente mit einem solchen Druckausgleichselement
GB2493975B (en) * 2011-08-26 2015-02-11 Dyson Technology Ltd Turbomachine
GB2504415B (en) 2011-08-26 2014-08-13 Dyson Technology Ltd Turbomachine
JP2016000960A (ja) * 2012-09-07 2016-01-07 三菱重工業株式会社 輸送機械用の電動圧縮機
CN110546388B (zh) * 2017-01-20 2022-02-11 皮尔伯格有限责任公司 用于内燃机的风机

Also Published As

Publication number Publication date
CN119522325A (zh) 2025-02-25
WO2024002469A1 (fr) 2024-01-04

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