EP1485619B1 - Pompe - Google Patents

Pompe Download PDF

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Publication number
EP1485619B1
EP1485619B1 EP03714804A EP03714804A EP1485619B1 EP 1485619 B1 EP1485619 B1 EP 1485619B1 EP 03714804 A EP03714804 A EP 03714804A EP 03714804 A EP03714804 A EP 03714804A EP 1485619 B1 EP1485619 B1 EP 1485619B1
Authority
EP
European Patent Office
Prior art keywords
crankcase
flow
bearing
diaphragm
diaphragm pump
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
EP03714804A
Other languages
German (de)
English (en)
Other versions
EP1485619A1 (fr
Inventor
Erich Becker
Erwin Hauser
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.)
KNF Neuberger GmbH
Original Assignee
KNF Neuberger 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 KNF Neuberger GmbH filed Critical KNF Neuberger GmbH
Publication of EP1485619A1 publication Critical patent/EP1485619A1/fr
Application granted granted Critical
Publication of EP1485619B1 publication Critical patent/EP1485619B1/fr
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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/128—Crankcases
    • 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
    • F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
    • F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/001—Noise damping
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/006—Crankshafts
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/06—Venting
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections

Definitions

  • the invention relates to a diaphragm pump with an oscillating membrane, wherein the diaphragm pump has a pump housing with a working space and a demarcated by the diaphragm crankcase, in which there is a pump drive with a drive shaft which is mounted by means arranged in the Kubelgetude walls bearings of which at least one is inserted into a through hole in a crankcase wall, and wherein the diaphragm pump has a suction guide separate from the crankcase.
  • a reciprocating compressor which comprises an oscillating reciprocating piston.
  • the previously known reciprocating compressor has a pump housing with a working space and a demarcated by this by the reciprocating crankcase, in which a located in the oil bath pump drive is provided with a drive shaft.
  • This drive shaft is mounted by means arranged in the crankcase walls bearings.
  • the crankcase is formed as a trough-shaped and the oil bath accommodating housing box, in which the drive shaft can be inserted through a lateral housing opening.
  • the lateral and for insertion of the drive shaft comparatively large housing opening is covered by a filter cartridge.
  • the diaphragm pump according to the invention has in the crankcase walls at least one flow channel, the pressure equalization of the crankcase during the oscillatory movements causes the pumping part.
  • a flow damper is arranged, which keeps the amount of air flowing through within limits. By the flow damper, the flow velocity in the flow channel is so greatly reduced that the noise generated by an air flow is greatly reduced.
  • at least one relief opening is provided in the crankcase wall, which is also covered with a flow damper.
  • the diaphragm pump according to the invention is therefore characterized by a particularly quiet running.
  • an oilless air compressor which has a compressor housing, which is divided by an oscillating piston in a crankcase and a working cylinder. On the piston, a check valve is provided, whereby the air from the crankcase through the check valve can flow into the cylinder.
  • the working cylinder is provided only with an air outlet opening and a check valve.
  • the crankshaft housing is provided on one side with an air inlet opening, which covers an air filter.
  • a particularly advantageous development according to the invention provides that at least one passage opening having at least one bearing is designed as a flow channel, and that a flow damper covering the clear channel cross section is arranged in the region of the at least one bearing inserted into the throughflow opening configured as flow channel.
  • at least one, at least one bearing having through hole is formed as a flow channel. Because also in the flow passage forming passage opening a flow damper is arranged, the amount of air flowing through the bearing is greatly reduced. As a result, the flow velocity in the gap remaining in the bearing drops so much that the noise generated by the air flow is greatly reduced.
  • the flow damper is formed by one or more discs of open-pored or the like gas-permeable material with high pneumatic resistance.
  • the flow damper for example, consist of one or more discs of open-cell foam material.
  • the flow damper is formed by one or more felt or fleece discs.
  • the flow damper is provided on both sides of the bearing inserted in a passage opening.
  • a diaphragm pump 1 which serves as a compressor or as a vacuum pump.
  • the diaphragm pump 1 has a pump housing 2, in which a working space. 3 is delimited from a crankcase 4 by an oscillating pumping part.
  • a pumping part is a diaphragm 5 made of elastic material which is clamped at its diaphragm circumference in the pump housing 2 and which can be offset by means of a pump drive 6 serving as an eccentric drive in oscillatory movements.
  • the membrane 5 is shown here in a top dead center, in which it fills the working space 3 almost positively.
  • the pump drive 6 is provided with its drive shaft 7 in the crankcase 4.
  • the drive shaft 7 is mounted on both sides of the eccentric drive 6 in rolling bearings 8, 9, which are arranged in the crankcase walls and formed here as a ball bearing.
  • rolling bearings 8, 9 which are arranged in the crankcase walls and formed here as a ball bearing.
  • the bearing 8 is inserted into a passage opening 11 located in the crankcase wall and leading out of the crankcase 4.
  • the bearing 9 is also inserted on the opposite crankcase wall into a passage opening 11 leading from the crankcase 4.
  • a bearing damper covering the bearing opening is arranged in the region of the bearings 8, 9 inserted into the passage openings 11 of the crankcase walls.
  • This flow damper is formed here by discs 13 of nonwoven, felt or the like gas fine bem material with high pneumatic resistance, which are provided on both sides of the camp.
  • the pump 1 shown here is therefore characterized by a particularly quiet running.
  • a discharge opening 14, 14 ' is additionally provided, which is covered here by a flow damper.
  • the discharge port 14, 14 'associated flow damper is formed of a plurality of gas-permeable discs 15 with high pneumatic resistance, in particular of several nonwoven or felt discs.
  • the relief opening 14, 14 ' is dimensioned so that the resistance in the region of Bearing openings of the bearing 8, 9 is greater than that in the region of the discharge opening 14, 14 ',
  • the discs 15 can be chosen so that the pneumatic resistance is smaller than the resistance in the bearing 8, 9.
  • the pump shown here is characterized by a particularly quiet operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Claims (6)

  1. Pompe (1) à membrane oscillante, ladite pompe à membrane présentant un carter (2) comprenant une chambre de travail (3) et une boîte de manivelle (4) qui est démarquée de ladite chambre par ladite membrane, et dans laquelle se trouve un entraînement (6) de la pompe, muni d'un arbre menant (7) monté dans des paliers (8, 9) logés dans les parois de ladite boîte de manivelle, et dont au moins l'un est intégré dans un orifice de passage (11) pratiqué dans une paroi de la boîte de manivelle, ladite pompe à membrane comportant un guide d'aspiration séparé d'avec la boîte de manivelle, et au moins un canal d'écoulement étant prévu, dans les parois de la boîte de manivelle, en vue d'équilibrer la pression de ladite boîte de manivelle au cours des mouvements oscillants de la membrane, caractérisée par le fait qu'un amortisseur d'écoulement est disposé dans le canal d'écoulement prévu au minimum ; et par le fait qu'il est prévu, dans la paroi de la boîte de manivelle, au moins un orifice de détente (14, 14') semblablement occulté par un amortisseur d'écoulement (15).
  2. Pompe à membrane selon la revendication 1, caractérisée par le fait qu'au moins un orifice de passage (11), présentant au moins un palier, est réalisé sous la forme d'un canal d'écoulement ; et par le fait qu'un amortisseur d'écoulement, recouvrant la section transversale intérieure du canal, est disposé dans la région dudit palier (8, 9) prévu au minimum et intégré dans l'orifice de passage (11) réalisé sous la forme d'un canal d'écoulement.
  3. Pompe à membrane selon la revendication 1 ou 2, caractérisée par le fait que l'amortisseur d'écoulement revêt la forme d'un ou de plusieurs disque(s) (13) en un matériau à pores ouverts ou un matériau similaire perméable aux gaz, opposant une haute résistance pneumatique.
  4. Pompe à membrane selon l'une des revendications 1 à 3, caractérisée par le fait que l'amortisseur d'écoulement est matérialisé par un ou plusieurs disque(s) (13) en du feutre et/ou en un non-tissé.
  5. Pompe à membrane selon l'une des revendications 1 à 4, caractérisée par le fait que la résistance pneumatique est plus grande, dans la région de l'orifice (des orifices) de portée, que dans la région de l'orifice (des orifices) de détente (14, 14').
  6. Pompe à membrane selon l'une des revendications 1 à 5, caractérisée par le fait que l'amortisseur d'écoulement est prévu de part et d'autre du palier intégré dans un orifice de passage (11).
EP03714804A 2002-03-19 2003-03-12 Pompe Expired - Lifetime EP1485619B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10212239A DE10212239A1 (de) 2002-03-19 2002-03-19 Pumpe
DE10212239 2002-03-19
PCT/EP2003/002524 WO2003078841A1 (fr) 2002-03-19 2003-03-12 Pompe

Publications (2)

Publication Number Publication Date
EP1485619A1 EP1485619A1 (fr) 2004-12-15
EP1485619B1 true EP1485619B1 (fr) 2007-05-09

Family

ID=27815784

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03714804A Expired - Lifetime EP1485619B1 (fr) 2002-03-19 2003-03-12 Pompe

Country Status (6)

Country Link
US (1) US7270048B2 (fr)
EP (1) EP1485619B1 (fr)
JP (1) JP2005527727A (fr)
DE (2) DE10212239A1 (fr)
TW (1) TW576895B (fr)
WO (1) WO2003078841A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4565564B2 (ja) * 2005-10-25 2010-10-20 日東工器株式会社 低振動ポンプ
US7470066B2 (en) * 2006-03-22 2008-12-30 Gm Global Technology Operations, Inc. Pump bearing assembly with seal
JP5004208B2 (ja) * 2006-03-24 2012-08-22 株式会社リコー 吸気装置及びそれを備えた画像形成装置
DE102007003720B3 (de) * 2007-01-25 2008-08-21 Knf Neuberger Gmbh Membranpumpe mit zwei Membranköpfen und zwei separaten Pumpengehäusen
US20110183654A1 (en) * 2010-01-25 2011-07-28 Brian Lanier Concurrent Use of Multiple User Interface Devices
US20110181780A1 (en) * 2010-01-25 2011-07-28 Barton James M Displaying Content on Detected Devices
CN103078440A (zh) * 2012-12-30 2013-05-01 深圳市颜华守信科技有限公司 防中心转子晃动的电机及泵体
AU2015370586B2 (en) 2014-12-22 2020-07-16 Smith & Nephew Plc Negative pressure wound therapy apparatus and methods
US9677557B2 (en) * 2015-01-20 2017-06-13 Hao Hsu Sleeping system
US10794375B2 (en) * 2015-05-05 2020-10-06 Parker-Hannifin Corporation Miniature vacuum/pressure diaphragm pumps with noise mitigation boot

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2176691A (en) * 1937-04-09 1939-10-17 Miller Simons Inc Fluid compressor
US2204814A (en) * 1939-01-28 1940-06-18 Westinghouse Air Brake Co Fluid compressor
GB600460A (en) * 1943-12-06 1948-04-09 Roy Douglass Buell Improvements in or relating to compressors
DE975981C (de) * 1952-02-20 1963-01-03 Siemens Ag Wellenabdichtung fuer Lager, insbesondere solche von elektrischen Maschinen
US2873687A (en) * 1955-05-12 1959-02-17 Malsbary Mfg Company Diaphragm pump
US2981197A (en) * 1957-12-11 1961-04-25 Gen Motors Corp Variable stroke diaphragm pump with eccentric drive
US3844688A (en) * 1973-05-08 1974-10-29 Dunham Bush Inc Compressor crank case venting arrangement for eliminating lube oil carryover
US5160773A (en) * 1991-08-16 1992-11-03 W. L. Gore & Associates, Inc. Encapsulated felt
BE1010852A3 (nl) * 1997-01-15 1999-02-02 Atlas Copco Airpower Nv Asafdichting.
DE20119407U1 (de) * 2001-11-28 2002-02-21 Shiau, Yih-Ming, Tien-Chung, Changhua Ölloser Luftkompressor

Also Published As

Publication number Publication date
TW576895B (en) 2004-02-21
DE50307237D1 (de) 2007-06-21
JP2005527727A (ja) 2005-09-15
DE10212239A1 (de) 2003-10-09
US20050112004A1 (en) 2005-05-26
EP1485619A1 (fr) 2004-12-15
WO2003078841A1 (fr) 2003-09-25
TW200304986A (en) 2003-10-16
US7270048B2 (en) 2007-09-18

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