EP1054159A3 - Roots compressor and method to reduce pulsations - Google Patents

Roots compressor and method to reduce pulsations Download PDF

Info

Publication number
EP1054159A3
EP1054159A3 EP00108046A EP00108046A EP1054159A3 EP 1054159 A3 EP1054159 A3 EP 1054159A3 EP 00108046 A EP00108046 A EP 00108046A EP 00108046 A EP00108046 A EP 00108046A EP 1054159 A3 EP1054159 A3 EP 1054159A3
Authority
EP
European Patent Office
Prior art keywords
roots
crushing
squeeze
torsion
root
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.)
Granted
Application number
EP00108046A
Other languages
German (de)
French (fr)
Other versions
EP1054159B1 (en
EP1054159A2 (en
Inventor
Hans Dipl.-Ing. Nissen
Ralf Dr.-Ing. Gödde
Norbert Dipl.-Ing. Düwel
Günter Dipl.-Ing. Seidel
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.)
Aerzener Maschinenfabrik GmbH
Original Assignee
Aerzener Maschinenfabrik 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 Aerzener Maschinenfabrik GmbH filed Critical Aerzener Maschinenfabrik GmbH
Publication of EP1054159A2 publication Critical patent/EP1054159A2/en
Publication of EP1054159A3 publication Critical patent/EP1054159A3/en
Application granted granted Critical
Publication of EP1054159B1 publication Critical patent/EP1054159B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/126—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0021—Systems for the equilibration of forces acting on the pump
    • F04C29/0035—Equalization of pressure pulses

Abstract

Die Erfindung betrifft einen Roots-Kompressor mit dreiflügeligen Rootskolben zum Komprimieren von gasförmigem Fördermedium sowie ein Verfahren zur Reduzierung von Quetschverlusten in einem Roots-Kompressor. Um bei derartigen Roots-Kompressoren Drehzahlerhöhungen unter Beibehaltung des Auslöschprinzips durch Interferenz vornehmen zu können, ohne Quetschverluststeigerungen in Kauf nehmen zu müssen, werden erfindungsgemäß die Rootskolben als verwundene Kolben ausgebildet, so dass beim Eintauchen der Kopfpartien in den Taillenbereich aufgrund der Verwindung phasenverschobene Quetschimpulse in axialer Richtung entstehen. Dabei werden der zeitliche Ablauf der Einspeisung von Fördermedium aus der druckseitigen Kammer durch Lage und Ausbildung des Voreinlasses in bezug auf den Kolbendrehwinkel und die phasenverschobenen Quetschimpulse durch Wahl des Grades der Verwindung der Rootskolben derart abgestimmt, dass die von dem in der druckseitigen Kammer auftretenden Unterdruckimpuls erzeugte Druckwelle diejenige Druckwelle auslöscht, die aus der Summe der Quetschimpulse resultiert.The invention relates to a roots compressor three-bladed root flask for compressing gaseous Pumped medium and a method for reducing Crushing losses in a Roots compressor. To at such Roots compressors speed increases while maintaining the To be able to carry out extinction principle by interference without You will have to accept increases in crushing loss According to the invention, the root pistons as twisted pistons trained so that when the head parts are immersed in the Waist area out of phase due to torsion Crushing pulses occur in the axial direction. In doing so the timing of the feed of the medium from the pressure side chamber by location and formation of the Preliminary intake in relation to the piston rotation angle and the phase-shifted squeeze impulses by choosing the degree of Torsion of the roots is adjusted in such a way that that of the vacuum pulse occurring in the pressure-side chamber generated pressure wave extinguishes the pressure wave that from the sum of the squeeze impulses results.

EP20000108046 1999-05-20 2000-04-20 Roots compressor and method to reduce pulsations Expired - Lifetime EP1054159B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999123234 DE19923234C2 (en) 1999-05-20 1999-05-20 Roots compressor
DE19923234 1999-05-20

Publications (3)

Publication Number Publication Date
EP1054159A2 EP1054159A2 (en) 2000-11-22
EP1054159A3 true EP1054159A3 (en) 2002-05-22
EP1054159B1 EP1054159B1 (en) 2003-09-10

Family

ID=7908681

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000108046 Expired - Lifetime EP1054159B1 (en) 1999-05-20 2000-04-20 Roots compressor and method to reduce pulsations

Country Status (2)

Country Link
EP (1) EP1054159B1 (en)
DE (1) DE19923234C2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10228894B4 (en) * 2002-06-27 2005-12-29 Rational Ag Cooking appliance with rotary blower

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2014932A (en) * 1933-03-17 1935-09-17 Gen Motors Corp Roots blower
US2078334A (en) * 1935-03-28 1937-04-27 Joseph A Martocello Blower
DE3527292A1 (en) * 1985-07-30 1987-02-12 Aerzener Maschf Gmbh METHOD FOR COMPRESSING GAS SHAPED CONVEYOR MEDIUM AND ROOTS COMPRESSOR FOR CARRYING OUT THE METHOD
US4643655A (en) * 1985-12-05 1987-02-17 Eaton Corporation Backflow passage for rotary positive displacement blower
US4768934A (en) * 1985-11-18 1988-09-06 Eaton Corporation Port arrangement for rotary positive displacement blower

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5131829A (en) * 1991-06-19 1992-07-21 Eaton Corporation Trapped volume vent means for meshing lobes of roots-type supercharger

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2014932A (en) * 1933-03-17 1935-09-17 Gen Motors Corp Roots blower
US2078334A (en) * 1935-03-28 1937-04-27 Joseph A Martocello Blower
DE3527292A1 (en) * 1985-07-30 1987-02-12 Aerzener Maschf Gmbh METHOD FOR COMPRESSING GAS SHAPED CONVEYOR MEDIUM AND ROOTS COMPRESSOR FOR CARRYING OUT THE METHOD
US4768934A (en) * 1985-11-18 1988-09-06 Eaton Corporation Port arrangement for rotary positive displacement blower
US4643655A (en) * 1985-12-05 1987-02-17 Eaton Corporation Backflow passage for rotary positive displacement blower

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HERBRICH M: "DRUCKLUFT OHNE PULS DREHKOLBENGEBLASE MIT INTEGRIERTEM PULSATIONSABBAU", CHEMIETECHNIK, HUTHIG, HEIDELBERG, DE, vol. 23, no. 4, 1 April 1994 (1994-04-01), pages 92 - 94, XP000447821, ISSN: 0340-9961 *

Also Published As

Publication number Publication date
EP1054159B1 (en) 2003-09-10
DE19923234A1 (en) 2000-11-30
DE19923234C2 (en) 2003-02-27
EP1054159A2 (en) 2000-11-22

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