EP2165077A1 - Dispositif de fourniture d'air destiné en particulier à un système de fourniture d'air des cellules à combustible - Google Patents

Dispositif de fourniture d'air destiné en particulier à un système de fourniture d'air des cellules à combustible

Info

Publication number
EP2165077A1
EP2165077A1 EP08759017A EP08759017A EP2165077A1 EP 2165077 A1 EP2165077 A1 EP 2165077A1 EP 08759017 A EP08759017 A EP 08759017A EP 08759017 A EP08759017 A EP 08759017A EP 2165077 A1 EP2165077 A1 EP 2165077A1
Authority
EP
European Patent Office
Prior art keywords
air
air supplier
axial
compressor
supplier
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.)
Withdrawn
Application number
EP08759017A
Other languages
German (de)
English (en)
Inventor
Paul Löffler
Manfred Stute
Siegfried Sumser
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.)
Mercedes Benz Group AG
Original Assignee
Daimler AG
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 Daimler AG filed Critical Daimler AG
Publication of EP2165077A1 publication Critical patent/EP2165077A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers 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
    • 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
    • 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
    • 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
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • F04D29/444—Bladed diffusers

Definitions

  • Air supplier in particular for an air supply system of
  • the invention relates to an air supplier with a compressor with a radial diffuser, in particular for powered by an electric motor air supply systems of fuel cells or exhaust gas turbocharger in internal combustion engines.
  • Air supplier of the type mentioned are known in the art and are used to supply air to fuel cells, in particular a fuel cell stack and have a driven by an electric motor flow compressor with a compressor and a radial diffuser.
  • an air supplier with a compressor is also known, which is designed as an axial compressor.
  • the object of the invention is to provide an improved air supplier with a space-saving design.
  • the air supplier according to the invention which is used in particular for powered ⁇ means of an electric motor air supply systems of fuel cells or turbocharger for internal combustion engines, has, in addition to a compressor with a radial diffuser to a connected thereto deflecting channel which opens into an axial annular chamber to which a collecting coil is arranged, which runs inwards, ie in the direction of the axis of rotation.
  • a compressor with a radial diffuser to a connected thereto deflecting channel which opens into an axial annular chamber to which a collecting coil is arranged, which runs inwards, ie in the direction of the axis of rotation.
  • the axial annular space could also be designed as an unscreened diffuser, in that the inner contour of the axial channel conically opens the flow cross section along the flow direction.
  • the invention will be explained in more detail below with reference to exemplary ⁇ examples.
  • FIG. 1 shows a first detail of a first embodiment of an air supplier according to the invention in a sectional view
  • Fig. 2 shows a second section of this embodiment
  • Fig. 3 is a perspective view of a part of an air supplier according to the invention.
  • the first section shows only one half of the air supplier L, in particular the above the longitudinal axis extending upper half of the air supplier L.
  • the compressor 1 comprises a compressor wheel 1.1, which is arranged rotatably about a rotation axis 1.2.
  • a radial diffuser 2 is arranged, which is bounded by two parallel side surfaces.
  • the radial diffuser 2 is variably adjustable by one of the side surfaces is adjustable.
  • the radial diffuser 2 is connected via a deflecting channel 3 with an axial annular space 4, which in turn in a Spi Rale 5 (also called collecting spiral) opens, which is designed directed inwardly to the axis of rotation 1.2, so that the available space within the configuredwan ⁇ tion of the compressor 1 is utilized.
  • the direction of the air intake is shown by the arrow Pl shown on the right.
  • Air is drawn in through the compressor wheel 1.1 and conveyed into the radial diffuser 2, in which a radial blading 2.1 is arranged.
  • the air is conveyed to the outside and thereby delayed due to the outwardly increasing radial extent.
  • the transported air is deflected by 90 degrees in the axial annular space 4.
  • the axial annular space 4 is designed as a parallel-walled diffuser (also called an axial diffuser) in which an axial blading 4.1 is arranged. Since the axial annular space 4 is parallel-walled, the transported air, which is axially directed by the axial blading 4.1, experiences a further delay. At the transition between the axial annular space 4 and spiral 5, the transported air is conveyed over the entire circumference of the axial annular space 4 in the spiral 5, where it undergoes a directional component in the circumferential direction by flow superposition and flows through an outlet 5.1.
  • the spiral 5 is formed similar to a turn of a snail shell.
  • the spiral 5 has a substantially constant wall thickness. This will cause the heat flow over the resulting air gap from the spiral area in the entry or Radau tokontur Complex difficult.
  • FIG. 2 shows a larger section with the Invention ⁇ modern apparatus, the compressor 1 with the coil 5 as shown in the above-described figure 1 only up to the rotational axis 1.2.
  • the compressor 1 shown on the left is driven by an electric motor 6, wherein the outer diameter of the compressor 1 is not greater than the diameter of the outer wall 6.1 of the electric motor 6.
  • the inventive design of the air supplier L it is possible, the outer diameter of the compressor 1 as small as to keep the diameter of the outer wall 6.1 of the electric motor 6.
  • the space requirement of the air supplier L is much smaller than in air suppliers according to the prior art, in which due to large wheel diameter and large radial diffusers with subsequent compressor spiral diameter are common, which are significantly larger than the diameter of conventional driving electric motors.
  • the air supplier L according to the invention thus enables placement in very limited installation spaces of the vehicle application.
  • the air flow generated by the compressor 1 is supplied to a fuel cell 7 or a fuel cell stack shown schematically in the upper area of FIG.
  • a Umblaseventil 8 is arranged, which is controlled by a controller 9.
  • the air supply system of the fuel cell 7 shown in this figure 2 is equipped with a designed as an expansion turbine turbine 10, in particular a Varioturbine.
  • the efficiency of the compressor blowdown is improved by the expansion of the blow-off flow in the turbine 10. Since compressor 1 are designed for fuel cell 7 with low specific speeds and thereby have relatively small diameter ratios from Radeintritt to Radaustritt, the space ⁇ requirement for large spiral cross sections can be very well satisfied in the air supplier L according to the invention.
  • the Axialbeschaufelonne 4.1 which are arranged in the axial annular space 4, shown.
  • the Axialbeschaufelonne 4.1 serve to retard the air flow diverted from the radial diffuser 2 in the axial annulus 4 in the axial direction as possible vortex free.
  • the diameter of the spiral 5 increases from the upper region of the illustrated compressor in the circumferential direction to the exit 5.1 of the spiral 5.
  • the air supplier L instead of for a fuel cell air supply for the supercharging of internal combustion engines, although compressors of exhaust gas turbochargers have significantly higher specific rotational speeds than electric motors for the fuel cell air supply.
  • the radial nozzle area forms in this case optionally the variable element for adjusting the flow cross-section.

Landscapes

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

Abstract

L'invention concerne un dispositif de fourniture d'air (L) comprenant un compresseur (1) avec un diffuseur radial (2), destiné en particulier à des systèmes de fourniture d'air pour des cellules à combustible (7), exploités au moyen d'un moteur électrique (6). Le dispositif de fourniture d'air (L) proposé par l'invention dispose d'un canal de déviation (3) relié au diffuseur radial (2), qui débouche sur un espace annulaire axial (4), au niveau duquel se trouve une spirale (5) qui passe vers l'intérieur.
EP08759017A 2007-06-21 2008-06-04 Dispositif de fourniture d'air destiné en particulier à un système de fourniture d'air des cellules à combustible Withdrawn EP2165077A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007028742A DE102007028742A1 (de) 2007-06-21 2007-06-21 Luftversorger, insbesondere für ein Luftversorgungssystem von Brennstoffzellen
PCT/EP2008/004461 WO2008155023A1 (fr) 2007-06-21 2008-06-04 Dispositif d'alimentation en air, en particulier pour un système d'alimentation en air de piles à combustible

Publications (1)

Publication Number Publication Date
EP2165077A1 true EP2165077A1 (fr) 2010-03-24

Family

ID=39737120

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08759017A Withdrawn EP2165077A1 (fr) 2007-06-21 2008-06-04 Dispositif de fourniture d'air destiné en particulier à un système de fourniture d'air des cellules à combustible

Country Status (4)

Country Link
US (1) US8567190B2 (fr)
EP (1) EP2165077A1 (fr)
DE (1) DE102007028742A1 (fr)
WO (1) WO2008155023A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8038392B2 (en) * 2007-07-18 2011-10-18 Honda Motor Co., Ltd. Axial diffuser for a centrifugal compressor
NZ589990A (en) 2008-06-05 2013-04-26 Resmed Ltd Treatment of respiratory conditions by automatic control of humidity in high flow rate and with gas leakage at interface to nares
EP2317150B1 (fr) * 2009-10-29 2019-12-18 ResMed Pty Ltd Dispositif de ventilation de patient et composants associés
DE102012019632A1 (de) 2012-10-06 2013-03-28 Daimler Ag Radialverdichter für einen Abgasturbolader
KR102104415B1 (ko) * 2015-02-05 2020-04-24 한화파워시스템 주식회사 압축기
DE102015005122A1 (de) 2015-04-22 2015-11-26 Daimler Ag Verdichter zum Verdichten von Luft, insbesondere für ein Brennstoffzellensystem
JP6860331B2 (ja) * 2016-11-29 2021-04-14 株式会社日立製作所 ディフューザ、吐出流路、および遠心ターボ機械
KR20190121846A (ko) * 2017-03-09 2019-10-28 존슨 컨트롤스 테크놀러지 컴퍼니 압축기용 수집기
US11799099B2 (en) * 2020-06-02 2023-10-24 Garrett Transportation I Inc. Air bearing cooling path for compressor device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079068A (en) * 1960-03-16 1963-02-26 Williams Res Corp Gas turbine
DE3612412A1 (de) * 1985-04-29 1986-10-30 Teledyne Industries, Inc., Los Angeles, Calif. Turbine mit radialgeblaese und diffusor sowie verfahren zur herstellung

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
GB701560A (en) * 1950-03-10 1953-12-30 Centrax Power Units Ltd Improvements relating to centrifugal compressors
DE1628280U (de) 1951-03-22 1951-09-13 Ernst Jun Schneider Weiselwiegenstanze mit pfropfenhuelsen.
US3367567A (en) 1966-08-01 1968-02-06 Carrier Corp Compressor casing
US3832089A (en) * 1972-08-28 1974-08-27 Avco Corp Turbomachinery and method of manufacturing diffusers therefor
DE2706110C3 (de) * 1977-02-14 1981-07-09 Aktiengesellschaft Kühnle, Kopp & Kausch, 6710 Frankenthal Verdichtergehäuse vorzugsweise für Abgasturbolader
US4932835A (en) * 1989-04-04 1990-06-12 Dresser-Rand Company Variable vane height diffuser
US5246335A (en) * 1991-05-01 1993-09-21 Ishikawajima-Harimas Jukogyo Kabushiki Kaisha Compressor casing for turbocharger and assembly thereof
CA2432094C (fr) * 2000-12-21 2010-07-27 Dresser-Rand Company Revetement insonorisant double couche et dispositif de pressurisation de fluide ; methode d'utilisation
CA2373905A1 (fr) * 2002-02-28 2003-08-28 Ronald David Conry Compresseur centrifuge double
JP2006125316A (ja) * 2004-10-29 2006-05-18 Shimadzu Corp ターボ形回転機器

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079068A (en) * 1960-03-16 1963-02-26 Williams Res Corp Gas turbine
DE3612412A1 (de) * 1985-04-29 1986-10-30 Teledyne Industries, Inc., Los Angeles, Calif. Turbine mit radialgeblaese und diffusor sowie verfahren zur herstellung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2008155023A1 *

Also Published As

Publication number Publication date
WO2008155023A1 (fr) 2008-12-24
DE102007028742A1 (de) 2008-12-24
US8567190B2 (en) 2013-10-29
US20100158722A1 (en) 2010-06-24

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