WO2011069805A1 - Ventilateur de mélange - Google Patents

Ventilateur de mélange Download PDF

Info

Publication number
WO2011069805A1
WO2011069805A1 PCT/EP2010/067794 EP2010067794W WO2011069805A1 WO 2011069805 A1 WO2011069805 A1 WO 2011069805A1 EP 2010067794 W EP2010067794 W EP 2010067794W WO 2011069805 A1 WO2011069805 A1 WO 2011069805A1
Authority
WO
WIPO (PCT)
Prior art keywords
blower
impeller
housing
fan
blower according
Prior art date
Application number
PCT/EP2010/067794
Other languages
German (de)
English (en)
Inventor
Stefan Brandl
Heinz Pfeiffer
Rudolf Tungl
Original Assignee
Ebm-Papst Landshut 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 Ebm-Papst Landshut Gmbh filed Critical Ebm-Papst Landshut Gmbh
Priority to US13/514,450 priority Critical patent/US20120243979A1/en
Priority to EP10784484.7A priority patent/EP2510240B1/fr
Publication of WO2011069805A1 publication Critical patent/WO2011069805A1/fr

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
    • F04D29/02—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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/34—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air
    • F23D14/36—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air in which the compressor and burner form a single unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/62—Mixing devices; Mixing tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L5/00—Blast-producing apparatus before the fire
    • F23L5/02—Arrangements of fans or blowers
    • 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
    • F04D29/083—Sealings 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/40—Organic materials
    • F05D2300/43—Synthetic polymers, e.g. plastics; Rubber

Definitions

  • the present invention relates to a fan with a housing and an impeller arranged on a motor shaft, which can be driven by a motor.
  • the blower according to the invention is also designed specifically as a mixing fan for conveying and mixing of combustible media with air, with which usually the combustible or explosive mixture is conveyed to a burner.
  • the invention relates to the use of an insulating fan impeller in a mixing fan for conveying and mixing a combustible medium with air, wherein preferably gas is used as the combustible medium.
  • the blowers according to the invention are preferably used in heating technology.
  • electrostatic charges of the fan components, in particular of the housing and of the fan wheel the danger of a sparking and possibly of it resulting ignition of the mixture within the blower, which is safe to avoid.
  • the measures provided for in the prior art are cost-intensive, structurally complex and sometimes difficult to recycle.
  • blower wheel or the housing in the case of mixing blowers, ie plastics which have been compounded with conductive materials such as carbon black or carbon, in order thus to achieve a conductive component.
  • conductive materials such as carbon black or carbon
  • blower wheels made of compound materials used in the prior art are capable of dissipating, and components with an applied antistatic surface coating are conductive or conductive. It is the object of the present invention to provide a more cost effective blower that is more recyclable.
  • a fan designed as a mixing fan for conveying and mixing a combustible medium with air comprises an impeller which is designed to be insulating.
  • the impeller can be mounted without grounding and can be operated during operation without additionally provided grounding. It is particularly advantageous if the impeller is arranged groundless on the motor shaft. In a preferred embodiment, the impeller is of a sorted type
  • Plastic preferably polyamide, is formed, whereby in the present case a plastic without compounding is understood to mean "unmixed.” However, it is possible to color the plastic without departing from the scope of protection of the term "pure”.
  • this preferably has a surface resistance Ro of at least 10 9 ⁇ . Also protected are materials with a surface resistance R 0 of 10 10 , 10 11 , 10 12 ⁇ with all intermediate values.
  • the measurement of the surface resistance can be done for example by a tera-ohmmeter LEM Unilab 5 kV, but also test methods according to DIN IEC 6093 are possible.
  • the blower according to the invention can have an overall surface of the blower wheel, formed from blower surface and blower fan, in the range between 25 cm 2 and 500 cm 2 , preferably between 25 and 400 cm 2 , more preferably between 25 and 300 cm 2 preferably between 25 and 200 cm 2 , more preferably between 25 and 150 cm 2 , wherein a charge up to voltage levels that could cause an ignition within the blower, are not achieved.
  • the total surface area of the housing may range between 25 cm 2 and 1000 cm 2 .
  • the at least one shaft bearing and / or the motor shaft and / or the shaft seal can likewise be embodied insulated in order to minimize discharges from charges via the shaft bearing.
  • the use of an insulating shaft seal makes it possible to use a simpler and sorted seal.
  • the gas is supplied in the intake area.
  • By mixing the gas in the intake higher heat outputs can be achieved because due to the negative pressure in the blower more gas can be added.
  • the impeller advantageous characteristics apply mutatis mutandis for the housing of the blower, which can be made insulating, earth-free operable and can be formed from sorted plastic.
  • Both the housing and the impeller can be manufactured by injection molding. It is also possible to use a conventional metal housing made of die-cast, for example made of aluminum, and an inventive Use blower wheel. The invention therefore also includes the use of an insulating impeller in any mixing fan.
  • conductive components have always been used to exclude the device itself as the ignition source of the explosive fuel-air mixture.
  • an ignition voltage of 1000-2000V is sufficient to realize the ignition.
  • gases commonly used in Europe there must already be more than 3000V ignition voltage to allow ignition.
  • the insulating fan and / or blower housing used according to the invention can also charge due to the flow within the fan and optionally in the intake air dust particles (in extreme cases up to 800 pg / m 3 ) at high speed of over 6500 U / min
  • the values achieved are well below the critical ignition values, so that a grounding unnecessary and accidental ignition due to static electricity within the fan is still excluded.
  • the possibly occurring minimal charges discharge themselves independently without further action within a very short time.
  • an electric field meter PFM-711A can be used to measure the charges or to determine the surface potential.
  • the blower is followed by a burner, which acts as a flame arrester.
  • the explosive volume of the atmosphere within the blower is less than 10 liters and greater than 0.05 liters.
  • FIG. 1 shows a cross section through a blower according to the prior art
  • FIG. 1 shows a cross-section of a blower with a housing 1, an impeller 2 arranged therein, which is arranged on a motor shaft 3, where is mounted at the motor shaft by means of a bearing system 5. Further, a shaft seal 4 is provided, in which the bearing 5 is inserted. All components are designed to be conductive or conductive, so that charges are conducted from the impeller 2 to the housing 1 and are discharged via a ground (not shown). The elaborate dissipation of the charge is shown by arrows. The charges on the impeller 2 are directed to the motor shaft 3 and from this passes through the bearing 5 via the shaft seal 4 to the housing 1.
  • the blower according to the invention overcomes the disadvantages of the prior art and, due to the insulating design of at least the blower wheel, enables a cost-effective solution to requirements that have always existed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne un ventilateur comprenant un carter, ainsi qu'une roue de ventilateur montée sur un arbre moteur et pouvant être entraînée par le biais d'un moteur. Selon l'invention, le ventilateur est réalisé en tant que ventilateur de mélange pour le transport et le mélange d'un milieu combustible avec de l'air et au moins la roue de ventilateur est électriquement isolante.
PCT/EP2010/067794 2009-12-10 2010-11-19 Ventilateur de mélange WO2011069805A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US13/514,450 US20120243979A1 (en) 2009-12-10 2010-11-19 Mixing fan
EP10784484.7A EP2510240B1 (fr) 2009-12-10 2010-11-19 Ventilateur de mélange

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009056837A DE102009056837A1 (de) 2009-12-10 2009-12-10 Mischgebläse
DE102009056837.9 2009-12-10

Publications (1)

Publication Number Publication Date
WO2011069805A1 true WO2011069805A1 (fr) 2011-06-16

Family

ID=43923586

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/067794 WO2011069805A1 (fr) 2009-12-10 2010-11-19 Ventilateur de mélange

Country Status (4)

Country Link
US (1) US20120243979A1 (fr)
EP (1) EP2510240B1 (fr)
DE (1) DE102009056837A1 (fr)
WO (1) WO2011069805A1 (fr)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8839815B2 (en) 2011-12-15 2014-09-23 Honeywell International Inc. Gas valve with electronic cycle counter
US8899264B2 (en) 2011-12-15 2014-12-02 Honeywell International Inc. Gas valve with electronic proof of closure system
US8905063B2 (en) 2011-12-15 2014-12-09 Honeywell International Inc. Gas valve with fuel rate monitor
US8947242B2 (en) 2011-12-15 2015-02-03 Honeywell International Inc. Gas valve with valve leakage test
US9074770B2 (en) 2011-12-15 2015-07-07 Honeywell International Inc. Gas valve with electronic valve proving system
US9234661B2 (en) 2012-09-15 2016-01-12 Honeywell International Inc. Burner control system
US9557059B2 (en) 2011-12-15 2017-01-31 Honeywell International Inc Gas valve with communication link
US9645584B2 (en) 2014-09-17 2017-05-09 Honeywell International Inc. Gas valve with electronic health monitoring
US9683674B2 (en) 2013-10-29 2017-06-20 Honeywell Technologies Sarl Regulating device
US9835265B2 (en) 2011-12-15 2017-12-05 Honeywell International Inc. Valve with actuator diagnostics
US9841122B2 (en) 2014-09-09 2017-12-12 Honeywell International Inc. Gas valve with electronic valve proving system
US9846440B2 (en) 2011-12-15 2017-12-19 Honeywell International Inc. Valve controller configured to estimate fuel comsumption
US9851103B2 (en) 2011-12-15 2017-12-26 Honeywell International Inc. Gas valve with overpressure diagnostics
US9995486B2 (en) 2011-12-15 2018-06-12 Honeywell International Inc. Gas valve with high/low gas pressure detection
US10024439B2 (en) 2013-12-16 2018-07-17 Honeywell International Inc. Valve over-travel mechanism
US10422531B2 (en) 2012-09-15 2019-09-24 Honeywell International Inc. System and approach for controlling a combustion chamber
US10503181B2 (en) 2016-01-13 2019-12-10 Honeywell International Inc. Pressure regulator
US10564062B2 (en) 2016-10-19 2020-02-18 Honeywell International Inc. Human-machine interface for gas valve
US10697815B2 (en) 2018-06-09 2020-06-30 Honeywell International Inc. System and methods for mitigating condensation in a sensor module
US11073281B2 (en) 2017-12-29 2021-07-27 Honeywell International Inc. Closed-loop programming and control of a combustion appliance

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2220059A (en) * 1985-10-25 1989-12-28 Rinnai Kk Water heating apparatus
EP0499557A1 (fr) * 1991-02-07 1992-08-19 De Dietrich Thermique Brûleur compact en fonte du type à prémélange total
JPH1137090A (ja) * 1997-07-16 1999-02-09 Molten Corp ガス給湯器等の送風用ファン
DE10204037A1 (de) 2002-02-01 2003-08-21 Motoren Ventilatoren Gmbh Radialgebläse mit Elektromotor
DE202004012015U1 (de) * 2004-07-31 2005-12-22 Ebm-Papst Landshut Gmbh Radialgebläserad
DE102004045251A1 (de) 2004-09-17 2006-03-23 Ebm-Papst Mulfingen Gmbh & Co. Kg Gebläsegehäuse und Gebläselaufrad für Gasgebläse
US20080131283A1 (en) * 2006-12-04 2008-06-05 Minebea Co., Ltd. Fan for a gas burner system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3632789B2 (ja) * 1995-08-28 2005-03-23 東陶機器株式会社 多翼遠心ファンの設計方法及び多翼遠心ファン
US5735686A (en) * 1996-09-11 1998-04-07 American Standard Inc. Combustion blower shaft leakage relief
DE102004036556A1 (de) * 2003-08-21 2005-03-17 Andreas Stihl Ag & Co. Kg Blasgerät
DE10350417A1 (de) * 2003-10-28 2005-06-02 Behr Gmbh & Co. Kg Verfahren zur Herstellung eines Lüfterrades sowie nach diesem Verfahren hergestelltes Lüfterrad

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2220059A (en) * 1985-10-25 1989-12-28 Rinnai Kk Water heating apparatus
EP0499557A1 (fr) * 1991-02-07 1992-08-19 De Dietrich Thermique Brûleur compact en fonte du type à prémélange total
JPH1137090A (ja) * 1997-07-16 1999-02-09 Molten Corp ガス給湯器等の送風用ファン
DE10204037A1 (de) 2002-02-01 2003-08-21 Motoren Ventilatoren Gmbh Radialgebläse mit Elektromotor
DE202004012015U1 (de) * 2004-07-31 2005-12-22 Ebm-Papst Landshut Gmbh Radialgebläserad
DE102004045251A1 (de) 2004-09-17 2006-03-23 Ebm-Papst Mulfingen Gmbh & Co. Kg Gebläsegehäuse und Gebläselaufrad für Gasgebläse
US20080131283A1 (en) * 2006-12-04 2008-06-05 Minebea Co., Ltd. Fan for a gas burner system

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9846440B2 (en) 2011-12-15 2017-12-19 Honeywell International Inc. Valve controller configured to estimate fuel comsumption
US8905063B2 (en) 2011-12-15 2014-12-09 Honeywell International Inc. Gas valve with fuel rate monitor
US9851103B2 (en) 2011-12-15 2017-12-26 Honeywell International Inc. Gas valve with overpressure diagnostics
US9995486B2 (en) 2011-12-15 2018-06-12 Honeywell International Inc. Gas valve with high/low gas pressure detection
US9074770B2 (en) 2011-12-15 2015-07-07 Honeywell International Inc. Gas valve with electronic valve proving system
US10697632B2 (en) 2011-12-15 2020-06-30 Honeywell International Inc. Gas valve with communication link
US9557059B2 (en) 2011-12-15 2017-01-31 Honeywell International Inc Gas valve with communication link
US8899264B2 (en) 2011-12-15 2014-12-02 Honeywell International Inc. Gas valve with electronic proof of closure system
US10851993B2 (en) 2011-12-15 2020-12-01 Honeywell International Inc. Gas valve with overpressure diagnostics
US8839815B2 (en) 2011-12-15 2014-09-23 Honeywell International Inc. Gas valve with electronic cycle counter
US9835265B2 (en) 2011-12-15 2017-12-05 Honeywell International Inc. Valve with actuator diagnostics
US8947242B2 (en) 2011-12-15 2015-02-03 Honeywell International Inc. Gas valve with valve leakage test
US9234661B2 (en) 2012-09-15 2016-01-12 Honeywell International Inc. Burner control system
US11421875B2 (en) 2012-09-15 2022-08-23 Honeywell International Inc. Burner control system
US10422531B2 (en) 2012-09-15 2019-09-24 Honeywell International Inc. System and approach for controlling a combustion chamber
US9657946B2 (en) 2012-09-15 2017-05-23 Honeywell International Inc. Burner control system
US9683674B2 (en) 2013-10-29 2017-06-20 Honeywell Technologies Sarl Regulating device
US10215291B2 (en) 2013-10-29 2019-02-26 Honeywell International Inc. Regulating device
US10024439B2 (en) 2013-12-16 2018-07-17 Honeywell International Inc. Valve over-travel mechanism
US9841122B2 (en) 2014-09-09 2017-12-12 Honeywell International Inc. Gas valve with electronic valve proving system
US9645584B2 (en) 2014-09-17 2017-05-09 Honeywell International Inc. Gas valve with electronic health monitoring
US10203049B2 (en) 2014-09-17 2019-02-12 Honeywell International Inc. Gas valve with electronic health monitoring
US10503181B2 (en) 2016-01-13 2019-12-10 Honeywell International Inc. Pressure regulator
US10564062B2 (en) 2016-10-19 2020-02-18 Honeywell International Inc. Human-machine interface for gas valve
US11073281B2 (en) 2017-12-29 2021-07-27 Honeywell International Inc. Closed-loop programming and control of a combustion appliance
US10697815B2 (en) 2018-06-09 2020-06-30 Honeywell International Inc. System and methods for mitigating condensation in a sensor module

Also Published As

Publication number Publication date
EP2510240B1 (fr) 2016-09-14
DE102009056837A1 (de) 2011-06-22
EP2510240A1 (fr) 2012-10-17
US20120243979A1 (en) 2012-09-27

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