EP0972938A3 - Gas ballast device for a multistage positive displacement pump - Google Patents

Gas ballast device for a multistage positive displacement pump Download PDF

Info

Publication number
EP0972938A3
EP0972938A3 EP99112217A EP99112217A EP0972938A3 EP 0972938 A3 EP0972938 A3 EP 0972938A3 EP 99112217 A EP99112217 A EP 99112217A EP 99112217 A EP99112217 A EP 99112217A EP 0972938 A3 EP0972938 A3 EP 0972938A3
Authority
EP
European Patent Office
Prior art keywords
gas ballast
displacement pump
positive displacement
ballast device
multistage positive
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
EP99112217A
Other languages
German (de)
French (fr)
Other versions
EP0972938B1 (en
EP0972938A2 (en
Inventor
Karl-Heinz Bernhardt
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.)
Pfeiffer Vacuum GmbH
Original Assignee
Pfeiffer Vacuum 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 Pfeiffer Vacuum GmbH filed Critical Pfeiffer Vacuum GmbH
Publication of EP0972938A2 publication Critical patent/EP0972938A2/en
Publication of EP0972938A3 publication Critical patent/EP0972938A3/en
Application granted granted Critical
Publication of EP0972938B1 publication Critical patent/EP0972938B1/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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B25/00—Multi-stage pumps
    • F04B25/005—Multi-stage pumps with two cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/18—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use for specific elastic fluids
    • F04B37/20—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use for specific elastic fluids for wet gases, e.g. wet air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/06—Pressure in a (hydraulic) circuit
    • F04B2205/061—Pressure in a (hydraulic) circuit after a throttle
    • 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
    • F04C2220/00—Application
    • F04C2220/50—Pumps with means for introducing gas under pressure for ballasting

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Reciprocating Pumps (AREA)
  • Non-Positive Displacement Air Blowers (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Compressor (AREA)

Abstract

Die Erfindung beschreibt eine Gasballasteinrichtung für mehrstufige Verdrängerpumpen wie z.B. Membranpumpen, Hubkolbenpumpen und dergleichen. Der Gasballast wird dabei zunächst über eine erste Anordnung (6) mit einer Drosselstelle (9) in den Zwischenvakuumraum eingelassen und dann über eine zweite Anordnung (7) mit einer Drosselstelle (10) in den Schöpfraum (8) der ersten Pumpstufe (1) weitergeleitet.

Figure 00000001
The invention describes a gas ballast device for multi-stage displacement pumps such as diaphragm pumps, reciprocating pumps and the like. The gas ballast is first admitted into the intermediate vacuum space via a first arrangement (6) with a throttle point (9) and then passed on via a second arrangement (7) with a throttle point (10) into the scooping space (8) of the first pump stage (1) .
Figure 00000001
EP99112217A 1998-07-11 1999-06-25 Gas ballast device for a multistage positive displacement pump Expired - Lifetime EP0972938B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19831123 1998-07-11
DE19831123A DE19831123A1 (en) 1998-07-11 1998-07-11 Gas ballast device for multi-stage positive displacement pumps

Publications (3)

Publication Number Publication Date
EP0972938A2 EP0972938A2 (en) 2000-01-19
EP0972938A3 true EP0972938A3 (en) 2000-06-28
EP0972938B1 EP0972938B1 (en) 2004-03-03

Family

ID=7873738

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99112217A Expired - Lifetime EP0972938B1 (en) 1998-07-11 1999-06-25 Gas ballast device for a multistage positive displacement pump

Country Status (5)

Country Link
US (1) US6071085A (en)
EP (1) EP0972938B1 (en)
JP (1) JP4159183B2 (en)
AT (1) ATE261063T1 (en)
DE (2) DE19831123A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9921983D0 (en) * 1999-09-16 1999-11-17 Boc Group Plc Improvements in vacuum pumps
DE10021454C2 (en) 2000-05-03 2002-03-14 Knf Neuberger Gmbh Device for conveying moist gases
DE10255792C5 (en) * 2002-11-28 2008-12-18 Vacuubrand Gmbh + Co Kg Method for controlling a vacuum pump and vacuum pump system
US7329105B2 (en) * 2003-12-03 2008-02-12 Haldex Brake Corporation Multi-directional pump
US7399345B2 (en) * 2006-05-09 2008-07-15 Rheodyne Llc Capillary flow restrictor apparatus
US20080063551A1 (en) * 2006-09-13 2008-03-13 R. Conrader Company Head Discharging Compressor System
JP6150477B2 (en) * 2012-08-16 2017-06-21 株式会社アルバック Reciprocating pump
KR20170054708A (en) * 2015-11-10 2017-05-18 엘지이노텍 주식회사 Multi-Coil Wireless Charging Method and Apparatus and System therefor
US11873802B2 (en) * 2020-05-18 2024-01-16 Graco Minnesota Inc. Pump having multi-stage gas compression
CN112049769B (en) * 2020-08-11 2022-09-02 珠海格力节能环保制冷技术研究中心有限公司 Piston compressor and refrigeration equipment

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1253590A (en) * 1968-10-11 1971-11-17 Balzers Patent Beteilig Ag Improvements in and relating to vacuum pumping arrangements
FR2423656A1 (en) * 1978-04-19 1979-11-16 Hunsinger Emile Self regulating vacuum pump - has by=pass containing valve operated by differential pressure across pump through spring loaded membrane
DE2927797A1 (en) * 1979-07-10 1981-02-05 Leybold Heraeus Gmbh & Co Kg Compression vacuum pump with suction branch valve - has inlet and by=pass valves thermostatically controlled by temp. within pump for corrosion protection
DE3710782A1 (en) * 1987-03-31 1988-10-20 Vacuubrand Gmbh & Co Method and device for pumping out vapours and/or vaporous mixtures and/or gas-vapour mixtures or similar media
EP0541989A1 (en) * 1991-11-11 1993-05-19 Balzers-Pfeiffer GmbH Multi-stage vacuum pumping system
DE19634519A1 (en) * 1996-08-27 1998-03-05 Leybold Vakuum Gmbh Piston vacuum pump with inlet and outlet

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US272730A (en) * 1883-02-20 Thomas w
US688520A (en) * 1901-10-09 1901-12-10 Ebenezer Hill Air-compressor.
US1724934A (en) * 1926-12-01 1929-08-20 Sulzer Ag Compound-reciprocating compressor
US2205793A (en) * 1936-08-10 1940-06-25 Liquid Carbonic Corp Compressor
US2812771A (en) * 1953-08-31 1957-11-12 Arthur E Mcfarland Hydraulic testing equipment
DE1865607U (en) * 1962-08-17 1963-01-17 Dieteg G M B H VACUUM PUMP, IN PARTICULAR FOR MILKING MACHINES.
US3835874A (en) * 1967-12-22 1974-09-17 F Dellasala Method of introducing liquid doses
US4784579A (en) * 1986-12-19 1988-11-15 Allied-Signal Inc. Hydraulic-pneumatic power transfer unit
DE4442174A1 (en) * 1994-11-26 1996-05-30 Leybold Ag Leak detector with vacuum pumps and operating procedures
DE19524609A1 (en) * 1995-07-06 1997-01-09 Leybold Ag Device for the rapid evacuation of a vacuum chamber
US5547347A (en) * 1995-09-21 1996-08-20 The Boc Group, Inc. Gas injection apparatus and method
US5820354A (en) * 1996-11-08 1998-10-13 Robbins & Myers, Inc. Cascaded progressing cavity pump system
DE19704234B4 (en) * 1997-02-05 2006-05-11 Pfeiffer Vacuum Gmbh Method and device for controlling the pumping speed of vacuum pumps

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1253590A (en) * 1968-10-11 1971-11-17 Balzers Patent Beteilig Ag Improvements in and relating to vacuum pumping arrangements
FR2423656A1 (en) * 1978-04-19 1979-11-16 Hunsinger Emile Self regulating vacuum pump - has by=pass containing valve operated by differential pressure across pump through spring loaded membrane
DE2927797A1 (en) * 1979-07-10 1981-02-05 Leybold Heraeus Gmbh & Co Kg Compression vacuum pump with suction branch valve - has inlet and by=pass valves thermostatically controlled by temp. within pump for corrosion protection
DE3710782A1 (en) * 1987-03-31 1988-10-20 Vacuubrand Gmbh & Co Method and device for pumping out vapours and/or vaporous mixtures and/or gas-vapour mixtures or similar media
EP0541989A1 (en) * 1991-11-11 1993-05-19 Balzers-Pfeiffer GmbH Multi-stage vacuum pumping system
DE19634519A1 (en) * 1996-08-27 1998-03-05 Leybold Vakuum Gmbh Piston vacuum pump with inlet and outlet

Also Published As

Publication number Publication date
ATE261063T1 (en) 2004-03-15
EP0972938B1 (en) 2004-03-03
EP0972938A2 (en) 2000-01-19
JP4159183B2 (en) 2008-10-01
DE19831123A1 (en) 2000-01-13
DE59908691D1 (en) 2004-04-08
JP2000038986A (en) 2000-02-08
US6071085A (en) 2000-06-06

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