EP0547436B1 - Liquid ring pump - Google Patents

Liquid ring pump Download PDF

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Publication number
EP0547436B1
EP0547436B1 EP92120579A EP92120579A EP0547436B1 EP 0547436 B1 EP0547436 B1 EP 0547436B1 EP 92120579 A EP92120579 A EP 92120579A EP 92120579 A EP92120579 A EP 92120579A EP 0547436 B1 EP0547436 B1 EP 0547436B1
Authority
EP
European Patent Office
Prior art keywords
outlet
orifice
liquid
ring pump
blocking element
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.)
Expired - Lifetime
Application number
EP92120579A
Other languages
German (de)
French (fr)
Other versions
EP0547436A1 (en
Inventor
Norbert Dipl.-Ing.(Fh) Schmid
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP0547436A1 publication Critical patent/EP0547436A1/en
Application granted granted Critical
Publication of EP0547436B1 publication Critical patent/EP0547436B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/06—Silencing
    • F04C29/068—Silencing the silencing means being arranged inside the pump housing
    • 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
    • F04C19/00—Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids

Definitions

  • the invention relates to a liquid ring pump according to the preamble of claim 1.
  • Such a liquid ring pump is known from EP-A-0 367 845.
  • a deflection member is arranged in the flow path from the outlet opening of the control body to the pressure port, through which the liquid contained in the liquid mixture of the liquid ring pump is deflected such that its direction of flow is directed transversely to the direction of flow of the gas contained in the liquid mixture. In this way, a liquid curtain is created that has a sound-absorbing effect.
  • the invention has for its object to design a liquid ring pump of the generic type so that the noise reduction in its outlet area is further improved.
  • the locking member can be designed as a flat cover part lying tightly against the peripheral edge of the mouth opening of the outlet. Such a part is particularly simple to manufacture.
  • a particularly simple embodiment of the liquid ring pump results from the fact that the locking member is designed in the manner of a film and consists of an elastic material and that in the region of the mouth opening of the outlet by means of a separating cut in the locking member at least one elastic that can be expanded by the conveyed medium Tongue is formed.
  • a relatively large cross-section and a favorable flow shape of the passage opening are made possible by two intersecting separating cuts on the locking member.
  • the liquid ring pump 1 denotes a liquid ring pump flanged to the housing of a drive motor 2.
  • the liquid ring pump 1 has a pump housing 4 which receives the impeller 3 of the pump and which is provided on one side with a smooth end flange 5.
  • a control disk 7 is arranged as a control body between a housing cover 6 and the pump housing 4.
  • On the housing cover 6 there is an intake port 8 and a pressure port 9, which ports each in a suction chamber 10 formed in the housing cover 6 or in one with the pressure chamber 11 open via a mouth opening 15 communicating outlet 9 '.
  • On the control disc 7 there is the inlet opening 12 and the outlet opening 13 of the liquid ring pump. These openings 12 and 13 are arranged on the control disk 7 so that the inlet opening 12 is in communication with the suction chamber 10 and the outlet opening 13 with the pressure chamber 11 of the housing cover 6.
  • a foil-like blocking member 14 is inserted into the pressure chamber 11, which completely covers the opening 15 of the outlet 9 'into the pressure chamber 11.
  • This locking member 14 can be designed so that it also covers the side walls of the pressure chamber 11. As a result, the sealing effect of the locking member 14 is improved.
  • two intersecting separating cuts 16 are made. These triangular cuts 16 form four triangular tongues 17.
  • the tongues 17 spread, as indicated by dashed lines in FIG.1. This creates a passage opening 18, the cross section of which is set such that the passage opening 18 is completely filled by the medium flowing through. This means that there is no clear path for the passage of noise, so that good noise reduction is achieved.
  • This noise reduction is above 10 dB in particular at high suction pressures of the liquid ring pump.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

The invention relates to a liquid-ring pump having an impeller (3) rotatably mounted in its pump casing (4) and a control body (7), which has an inlet and an outlet port (12, 13) and whose outlet port (13) opens into a discharge chamber (11) which is provided on the pump casing (4) and connected to which there is additionally a discharge port (9) leading outwards. Effective sound-proofing is achieved in such a liquid-ring pump by there being arranged, in the discharge chamber (11) in the flow path between the mouth of the outlet port (13) and the mouth orifice (15) of the discharge port (9), a blocking element (14) which covers this mouth orifice (15) and has a passage orifice (18) whose passage cross section automatically adjusts to the quantity of the medium delivered by the pump at any time. <IMAGE>

Description

Die Erfindung betrifft eine Flüssigkeitsringpumpe gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a liquid ring pump according to the preamble of claim 1.

Eine solche Flüssigkeitsringpumpe ist durch die EP-A-0 367 845 bekannt. Bei dieser Flüssigkeitsringpumpe ist im Strömungsweg von der Auslaßöffnung des Steuerkörpers zum Druckstutzen hin ein Umlenkglied angeordnet, durch das die im Fördergemisch der Flüssigkeitsringpumpe enthaltene Flüssigkeit derart umgelenkt wird, daß ihre Strömungsrichtung quer zur Strömungsrichtung des im Fördergemisch enthaltenen Gases gerichtet ist. Auf diese Weise wird ein Flüssigkeitsschleier erzeugt, der eine schalldämpfende Wirkung besitzt.Such a liquid ring pump is known from EP-A-0 367 845. In the case of this liquid ring pump, a deflection member is arranged in the flow path from the outlet opening of the control body to the pressure port, through which the liquid contained in the liquid mixture of the liquid ring pump is deflected such that its direction of flow is directed transversely to the direction of flow of the gas contained in the liquid mixture. In this way, a liquid curtain is created that has a sound-absorbing effect.

Der Erfindung liegt die Aufgabe zugrunde, eine Flüssigkeitsringpumpe der gattungsgemäßen Art so auszubilden, daß die Geräuschdämpfung in ihrem Auslaßbereich weiter verbessert ist.The invention has for its object to design a liquid ring pump of the generic type so that the noise reduction in its outlet area is further improved.

Die Lösung der gestellten Aufgabe gelingt durch die im Kennzeichen des Anspruchs 1 angegebenen Merkmale. Bei einer solchen Ausgestaltung der Pumpe besteht praktisch kein freier Durchlaßweg mehr, durch den Geräusche ungehindert nach außen gelangen können. Die Mündungsöffnung des Druckstutzens ist durch das Sperrglied vollkommen abgedeckt. Die Durchtrittsöffnung paßt sich in ihrer Größe jeweils der Fördermenge des Flüssigkeits-Gas-Gemisches an, so daß sie vollständig von diesem Gemisch ausgefüllt ist und damit auch im Bereich der Durchtrittsöffnung kein freier Weg für durchtretende Geräusche besteht. Außerdem wird durch das Sperrglied der Druckraum in zwei Räume geteilt, die ähnlich eines Hohlraumresonators eine Geräuschdämpfung bewirken.The problem is solved by the features specified in the characterizing part of claim 1. With such a configuration of the pump there is practically no longer a free passage path through which noise can reach the outside unhindered. The mouth of the pressure port is completely covered by the locking member. The size of the passage opening adapts to the flow rate of the liquid-gas mixture, so that it is completely filled with this mixture and therefore there is no clear path for noise in the area of the passage opening. In addition, the pressure element is divided into two spaces by the blocking member, which, like a cavity resonator, cause noise damping.

Das Sperrglied kann als ebenes, dicht am Umfangsrand der Mündungsöffnung des Auslasses anliegendes Abdeckteil ausgebildet sein. Ein solches Teil ist in seiner Herstellung besonders einfach.The locking member can be designed as a flat cover part lying tightly against the peripheral edge of the mouth opening of the outlet. Such a part is particularly simple to manufacture.

Nach einer weiteren Ausgestaltung der Erfindung ergibt sich eine besonders einfache Ausführungsform der Flüssigkeitsringpumpe dadurch, daß das Sperrglied folienartig ausgebildet ist und aus einem elastischen Werkstoff besteht und daß im Bereich der Mündungsöffnung des Auslasses durch einen Trennschnitt im Sperrglied mindestens eine elastische, durch das geförderte Medium aufspreizbare Zunge gebildet ist.According to a further embodiment of the invention, a particularly simple embodiment of the liquid ring pump results from the fact that the locking member is designed in the manner of a film and consists of an elastic material and that in the region of the mouth opening of the outlet by means of a separating cut in the locking member at least one elastic that can be expanded by the conveyed medium Tongue is formed.

Durch zwei sich kreuzende Trennschnitte an dem Sperrglied wird ein relativ großer Querschnitt und eine günstige Strömungsform der Durchtrittsöffnung ermöglicht.A relatively large cross-section and a favorable flow shape of the passage opening are made possible by two intersecting separating cuts on the locking member.

Anhand eines in der Zeichnung dargestellten Ausführungsbeispieles wird der Anmeldungsgegenstand nachfolgend näher beschrieben. Es zeigt:

FIG 1
eine Flüssigkeitsringpumpe im Schnitt,
FIG 2
eine Flüssigkeitsringpumpe im Schnitt entlang der Linie II-II in FIG 1.
The subject of the application is described in more detail below using an exemplary embodiment shown in the drawing. It shows:
FIG. 1
a liquid ring pump in section,
FIG 2
a liquid ring pump in section along the line II-II in Figure 1.

Mit 1 ist eine am Gehäuse eines Antriebsmotors 2 angeflanschte Flüssigkeitsringpumpe bezeichnet. Die Flüssigkeitsringpumpe 1 weist ein das Laufrad 3 der Pumpe aufnehmendes Pumpengehäuse 4 auf, das auf seiner einen Seite mit einem glatten Abschlußflansch 5 versehen ist. Auf der gegenüberliegenden Seite des Pumpengehäuses 4 ist zwischen einem Gehäusedeckel 6 und dem Pumpengehause 4 eine Steuerscheibe 7 als Steuerkörper angeordnet. Am Gehäusedeckel 6 befindet sich ein Ansaugstutzen 8 und ein Druckstutzen 9, welche Stutzen jeweils in einen im Gehäusedeckel 6 ausgebildeten Ansaugraum 10 bzw. in einem mit dem Druckraum 11 über eine Mündungsöffnung 15 in Verbindung stehenden Auslaß 9' münden. An der Steuerscheibe 7 befindet sich die Einlaßöffnung 12 und die Auslaßöffnung 13 der Flüssigkeitsringpumpe. Diese Öffnungen 12 und 13 sind so an der Steuerscheibe 7 angeordnet, daß die Einlaßöffnung 12 mit dem Ansaugraum 10 und die Auslaßöffnung 13 mit dem Druckraum 11 des Gehäusedeckels 6 in Verbindung steht.1 denotes a liquid ring pump flanged to the housing of a drive motor 2. The liquid ring pump 1 has a pump housing 4 which receives the impeller 3 of the pump and which is provided on one side with a smooth end flange 5. On the opposite side of the pump housing 4, a control disk 7 is arranged as a control body between a housing cover 6 and the pump housing 4. On the housing cover 6 there is an intake port 8 and a pressure port 9, which ports each in a suction chamber 10 formed in the housing cover 6 or in one with the pressure chamber 11 open via a mouth opening 15 communicating outlet 9 '. On the control disc 7 there is the inlet opening 12 and the outlet opening 13 of the liquid ring pump. These openings 12 and 13 are arranged on the control disk 7 so that the inlet opening 12 is in communication with the suction chamber 10 and the outlet opening 13 with the pressure chamber 11 of the housing cover 6.

In den Druckraum 11 ist ein folienartig ausgebildetes Sperrglied 14 eingefügt, welches die Mündungsöffnung 15 des Auslasses 9' in den Druckraum 11 vollständig überdeckt. Dieses Sperrglied 14 kann so ausgebildet sein, daß es auch die Seitenwände des Druckraumes 11 bedeckt. Hierdurch wird die Abdichtwirkung des Sperrgliedes 14 verbessert.A foil-like blocking member 14 is inserted into the pressure chamber 11, which completely covers the opening 15 of the outlet 9 'into the pressure chamber 11. This locking member 14 can be designed so that it also covers the side walls of the pressure chamber 11. As a result, the sealing effect of the locking member 14 is improved.

In dem die Mündungsöffnung 15 überdeckenden Bereich des Sperrgliedes 14 sind zwei sich kreuzende Trennschnitte 16 angebracht. Durch diese Trennschnitte 16 werden vier dreieckförmige Zungen 17 gebildet. Beim Betrieb der Flüssigkeitsringpumpe werden unter dem Einfluß des von der Pumpe geförderten Mediums z.B. Flüssigkeits-Gas-Gemisch die Zungen 17 aufgespreizt, wie dies in FIG.1 gestrichelt angedeutet ist. Hierdurch entsteht eine Durchtrittsöffnung 18, deren Querschnitt sich so einstellt, daß die Durchtrittsöffnung 18 von dem durchstromenden Medium vollständig ausgefüllt ist. Damit besteht kein freier Weg für den Durchtritt von Geräuschen, so daß eine gute Geräuschdämpfung erzielt wird.In the area of the locking member 14 covering the mouth opening 15, two intersecting separating cuts 16 are made. These triangular cuts 16 form four triangular tongues 17. When operating the liquid ring pump, e.g. under the influence of the medium conveyed by the pump, Liquid-gas mixture, the tongues 17 spread, as indicated by dashed lines in FIG.1. This creates a passage opening 18, the cross section of which is set such that the passage opening 18 is completely filled by the medium flowing through. This means that there is no clear path for the passage of noise, so that good noise reduction is achieved.

Diese Geräuschdämpfung beträgt insbesondere bei hohen Ansaugdrücken der Flüssigkeitsringpumpe über 10 dB.This noise reduction is above 10 dB in particular at high suction pressures of the liquid ring pump.

Claims (4)

  1. A liquid-ring pump with an impeller (3) rotatably mounted in the pump housing (4), a control member (7), which comprises an input port and an output port (12 and 13) and whose output port opens into a compression chamber (11) provided on the pump housing, the compression chamber being connected to an outlet (9') via an orifice (15), characterised in that a blocking element (14) is arranged in the compression chamber (11) in the flow path between the mouth of the outlet port (13) and the orifice (15) of the outlet (9'), which blocking element covers the orifice (15) of the outlet (9') and comprises a flow-through opening (18), whose flow-through cross section is able to automatically adapt to the quantity of the medium delivered by the pump at any given time.
  2. A liquid-ring pump according to claim 1, characterised in that the blocking element (14) is constructed as a flat cover part which tightly abuts the peripheral edge of the orifice (15) of the outlet (9').
  3. A liquid-ring pump according to claim 1 or 2, characterised in that the blocking element (14) is constructed in the manner of a foil and is made of an elastic material, and at least one elastic tongue (17) is formed in the area of the orifice (15) of the outlet (9'), which elastic tongue can be forced apart by the discharging medium and is formed by a separating cut (16) in the blocking element (14).
  4. A liquid-ring pump according to claim 3, characterised in that two intersecting separating cuts (16) are provided in the blocking element (14).
EP92120579A 1991-12-17 1992-12-02 Liquid ring pump Expired - Lifetime EP0547436B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4141674 1991-12-17
DE4141674 1991-12-17

Publications (2)

Publication Number Publication Date
EP0547436A1 EP0547436A1 (en) 1993-06-23
EP0547436B1 true EP0547436B1 (en) 1995-03-08

Family

ID=6447290

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92120579A Expired - Lifetime EP0547436B1 (en) 1991-12-17 1992-12-02 Liquid ring pump

Country Status (4)

Country Link
US (1) US5299916A (en)
EP (1) EP0547436B1 (en)
AT (1) ATE119628T1 (en)
DE (1) DE59201609D1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9420803U1 (en) * 1994-12-23 1996-04-25 Sihi GmbH & Co KG, 25524 Itzehoe Liquid ring gas pump with a noise damping body in the pressure chamber
DE29803768U1 (en) 1998-03-04 1998-06-10 Siemens AG, 80333 München Liquid ring pump
DE69936232T2 (en) * 1998-09-18 2008-01-17 Jtekt Corp. Electrically driven pump
US20040202549A1 (en) * 2003-01-17 2004-10-14 Barton Russell H. Liquid ring pump
EP1968673B1 (en) * 2006-01-04 2020-10-28 ResMed Pty Ltd Quiet blower apparatus and system and method for reducing blower noise
DE102014010948A1 (en) * 2014-07-28 2016-01-28 Albonair Gmbh Reduktionsmitteldosiersystem with damping of the reducing agent promotion
JP6470697B2 (en) * 2015-02-27 2019-02-13 ダイキン工業株式会社 Compressor

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1180613A (en) * 1913-03-19 1916-04-25 Siemens Schuckertwerke Gmbh Rotary pump.
DE1503605B2 (en) * 1965-04-28 1971-05-27 Siemens AG, 1000 Berlin u 8000 München CHECK VALVE FOR A LIQUID RING GAS PUMP
DE2036295C3 (en) * 1970-07-22 1975-09-18 Siemen & Hinsch Gmbh Liquid ring compressor
DE2318538B2 (en) * 1973-04-12 1975-12-04 Siemens Ag, 1000 Berlin Und 8000 Muenchen Distributor for a liquid ring gas compressor
JPS555428A (en) * 1978-06-22 1980-01-16 Nakamura Suikan:Kk Water ring pump of side-air-port type
US4539879A (en) * 1982-07-13 1985-09-10 Campbell Soup Company Method and apparatus for forming and processing food spears
US4537567A (en) * 1982-11-29 1985-08-27 Mitsubishi Denki Kabushiki Kaisha Rolling piston type compressor
EP0135254B1 (en) * 1983-06-24 1988-01-07 Matsushita Refrigeration Company Rotary compressor
EP0367845B1 (en) * 1988-11-07 1991-12-18 Siemens Aktiengesellschaft Liquid ring pump

Also Published As

Publication number Publication date
DE59201609D1 (en) 1995-04-13
EP0547436A1 (en) 1993-06-23
ATE119628T1 (en) 1995-03-15
US5299916A (en) 1994-04-05

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