EP1249615A3 - Blower rotor - Google Patents

Blower rotor Download PDF

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Publication number
EP1249615A3
EP1249615A3 EP01130571A EP01130571A EP1249615A3 EP 1249615 A3 EP1249615 A3 EP 1249615A3 EP 01130571 A EP01130571 A EP 01130571A EP 01130571 A EP01130571 A EP 01130571A EP 1249615 A3 EP1249615 A3 EP 1249615A3
Authority
EP
European Patent Office
Prior art keywords
blower
impellers
gas
burner
exhaust
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Withdrawn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
EP01130571A
Other languages
German (de)
French (fr)
Other versions
EP1249615A2 (en
Inventor
Markus Rotert
Dieter-Heinz Dr.-Ing. Hellmann
Mathias Weber
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1249615A2 publication Critical patent/EP1249615A2/en
Publication of EP1249615A3 publication Critical patent/EP1249615A3/en
Withdrawn legal-status Critical Current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
    • F04D29/26—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
    • F04D29/30—Vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F04D17/164—Multi-stage fans, e.g. for vacuum cleaners
    • 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
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • 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
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
    • 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

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

Die Erfindung betrifft ein Gebläse für eine Gas-Brennwertkesseltherme zur Zuführung der Verbrennungsluft oder des Gas-Luftgemeisches für den Brenner in der Brennkammer, wobei dem Brenner ein Wärmeüberträger nachgeordnet ist, durch den das Abgas geleitet einem Abgassystem zugeführt wird. Eine höhere Sicherheit gegen systembedingte selbsterregte Schwingungen wird dadurch erreicht, dass das Gebläse mehrstufig mit Laufrädern (11,12) und jeweils einem zwischen aufeinander folgenden Laufrädern (11,12) angeordnetem, feststehendem Leitrad (20) ausgebildet ist und eine druckfeste Gebläsekennlinie mit großer Steilheit (α) aufweist, wobei die Laufräder (11,12) und/oder die Leiträder (20) mit möglichst kleinem Außendurchmesser (Da) und deren Schaufeln mit einem kleinen Schaufelaustrittswinkel (β) versehen sind.

Figure 00000001
The invention relates to a blower for a gas condensing boiler for supplying the combustion air or the gas-air mixture for the burner in the combustion chamber, the burner being followed by a heat exchanger through which the exhaust gas is passed to an exhaust system. A higher level of security against system-induced self-excited vibrations is achieved in that the blower is designed in several stages with impellers (11, 12) and a fixed stator (20) arranged between successive impellers (11, 12) and a pressure-resistant blower characteristic with great steepness (α), the impellers (11, 12) and / or the guide wheels (20) having the smallest possible outer diameter (Da) and their blades being provided with a small blade outlet angle (β).
Figure 00000001
EP01130571A 2001-04-12 2001-12-21 Blower rotor Withdrawn EP1249615A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10118336 2001-04-12
DE10118336.4A DE10118336B4 (en) 2001-04-12 2001-04-12 Blower for a gas condensing boiler

Publications (2)

Publication Number Publication Date
EP1249615A2 EP1249615A2 (en) 2002-10-16
EP1249615A3 true EP1249615A3 (en) 2003-10-08

Family

ID=7681401

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01130571A Withdrawn EP1249615A3 (en) 2001-04-12 2001-12-21 Blower rotor

Country Status (2)

Country Link
EP (1) EP1249615A3 (en)
DE (1) DE10118336B4 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2014925A1 (en) 2007-07-12 2009-01-14 ABB Turbo Systems AG Diffuser for radial compressors
CZ304593B6 (en) * 2008-10-29 2014-07-23 Vysoké Učení Technické V Brně Hydraulic machine impeller wheel
CN101922467B (en) * 2010-03-24 2012-01-11 南通大通宝富风机有限公司 Centrifugal blower
CN104275630A (en) * 2013-07-12 2015-01-14 南京德朔实业有限公司 Handheld sanding machine
CN206617363U (en) * 2017-03-01 2017-11-07 讯凯国际股份有限公司 Impeller
DE102019219914A1 (en) * 2019-12-17 2021-06-17 Ziehl-Abegg Se Turbomachine and method for detecting the outflow angle in turbomachines
KR20220113816A (en) * 2020-01-23 2022-08-16 누보 피그노네 테크놀로지 에스알엘 A return channel with non-constant return channel vane pitch and a centrifugal turbomachine comprising the return channel
KR20210104479A (en) * 2020-02-17 2021-08-25 엘지전자 주식회사 Pump

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1672986A (en) * 1922-04-17 1928-06-12 Garnet W Mckee Multistage blower
GB652337A (en) * 1947-11-07 1951-04-18 Electrolux Ltd Improvements in or relating to centrifugal fans
GB1125075A (en) * 1967-04-12 1968-08-28 Svenska Luftfilter Ab Improvements in or relating to air supply fan units for oil burners and other devices
DE1813335A1 (en) * 1967-12-11 1969-07-24 Gutehoffnungshuette Sterkrade Turbo compressor
GB1293553A (en) * 1969-02-18 1972-10-18 Cav Ltd Radial flow fans
JPS60122814A (en) * 1983-12-08 1985-07-01 Matsushita Electric Ind Co Ltd Air feeding device for combustion device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5817358B2 (en) * 1978-03-07 1983-04-06 川崎重工業株式会社 Multi-stage turbo compressor
DE3842697A1 (en) * 1988-12-19 1990-06-21 Standard Elektrik Lorenz Ag HIGH PRESSURE BLOWER
DE19629220B4 (en) * 1996-07-19 2005-05-12 Motoren Ventilatoren Landshut Gmbh High Pressure Blower

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1672986A (en) * 1922-04-17 1928-06-12 Garnet W Mckee Multistage blower
GB652337A (en) * 1947-11-07 1951-04-18 Electrolux Ltd Improvements in or relating to centrifugal fans
GB1125075A (en) * 1967-04-12 1968-08-28 Svenska Luftfilter Ab Improvements in or relating to air supply fan units for oil burners and other devices
DE1813335A1 (en) * 1967-12-11 1969-07-24 Gutehoffnungshuette Sterkrade Turbo compressor
GB1293553A (en) * 1969-02-18 1972-10-18 Cav Ltd Radial flow fans
JPS60122814A (en) * 1983-12-08 1985-07-01 Matsushita Electric Ind Co Ltd Air feeding device for combustion device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 279 (M - 427) 7 November 1985 (1985-11-07) *

Also Published As

Publication number Publication date
DE10118336B4 (en) 2016-03-24
DE10118336A1 (en) 2002-10-24
EP1249615A2 (en) 2002-10-16

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