EP0809028A2 - Pumpenmembran - Google Patents
Pumpenmembran Download PDFInfo
- Publication number
- EP0809028A2 EP0809028A2 EP97303541A EP97303541A EP0809028A2 EP 0809028 A2 EP0809028 A2 EP 0809028A2 EP 97303541 A EP97303541 A EP 97303541A EP 97303541 A EP97303541 A EP 97303541A EP 0809028 A2 EP0809028 A2 EP 0809028A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- diaphragm
- pump
- shape
- neutral
- pump diaphragm
- 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- Withdrawn
Links
Images
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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/0009—Special features
- F04B43/0054—Special features particularities of the flexible members
-
- 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
- F04B45/041—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms double acting plate-like flexible pumping member
-
- 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
- F04B45/043—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms two or more plate-like pumping flexible members in parallel
-
- 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
- F04B53/22—Arrangements for enabling ready assembly or disassembly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2210/00—Working fluid
- F05B2210/10—Kind or type
- F05B2210/12—Kind or type gaseous, i.e. compressible
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/30—Retaining components in desired mutual position
- F05B2260/301—Retaining bolts or nuts
Definitions
- Air operated double diaphragm pumps of various sorts have been known and used for many years. Such pumps typically utilize a pair of diaphragms molded from various materials depending upon the chemical compatibility required for the pump.
- the diaphragms are typically molded in a hat shaped configuration. Because one side of the diaphragm is designed to face the fluid and the other to face the air chamber, when assembling the pump it is generally necessary to turn one of the "hats" inside out for assembly. In larger pump sizes, this requirement may be especially difficult.
- the diaphragm is molded in an "S" shape which corresponds to the shape of the diaphragm in the center (of the pump stroke) or relaxed position.
- diaphragms should also lead to increased life of the diaphragm. There is less chance for the diaphragm to rub and be abraded on either the fluid cover or air cover housings. Further, the maximum distance that the diaphragm will flex is substantially less than with diaphragms manufactured according to current practice. Improved diaphragm life due to reduced applied stress at pump stroke changeover will result as the diaphragm profile facilitates a natural roll motion through the peak stress points in pump operation. Proportionally larger arc segments can be used in this diaphragm profile cross-section as well to improve the flex life of diaphragms.
- the diaphragm as shown in the attached drawing is made of a rubber material (such as VITONTM) having a nylon fabric reinforcement and is manufactured using a compression molding process. Of course this same technique may be used for diaphragms made of other materials as well. For a 14 inch diameter diaphragm in a 3 inch pump, the diaphragm has a nominal thickness of .160 inches.
- Figure 1 is a front view of the diaphragm of the instant invention.
- Figure 2 is a sectional view taken along line 2-2 of Figure 1.
- Figure 3 shows the diaphragm in its relaxed position in solid and at the two extreme positions in phantom.
- the diaphragm 10 is molded in an "S" shape which corresponds to the shape of the diaphragm in the center (of the pump stroke) or relaxed position.
- S the shape of the diaphragm in the center (of the pump stroke) or relaxed position.
- the diaphragm 10 as shown in the attached drawings is made of a rubber material (such as VITONTM having a nylon fabric reinforcement and is manufactured using a compression molding process. Of course this same technique may be used for diaphragms made of other materials as well. For a 14 inch diameter diaphragm in a 3 inch pump, the diaphragm has a nominal thickness of .160 inches.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1862396P | 1996-05-23 | 1996-05-23 | |
US18623 | 1996-05-23 | ||
1997-02-13 | |||
US85913397A | 1997-05-20 | 1997-05-20 | |
US859133 | 1997-05-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0809028A2 true EP0809028A2 (de) | 1997-11-26 |
EP0809028A3 EP0809028A3 (de) | 1999-06-02 |
Family
ID=26691311
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97303541A Withdrawn EP0809028A3 (de) | 1996-05-23 | 1997-05-23 | Pumpenmembran |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0809028A3 (de) |
JP (1) | JPH11159461A (de) |
KR (1) | KR970075365A (de) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6276907B1 (en) | 1999-08-12 | 2001-08-21 | Wagner Spray Tech Corporation | Hydraulically driven diaphragm pump |
WO2006092333A1 (de) * | 2005-03-02 | 2006-09-08 | Ami Agrolinz Melamine International Gmbh | Membranpumpe und ein verfahren zur herstellung einer pumpenmembran |
US9084845B2 (en) | 2011-11-02 | 2015-07-21 | Smith & Nephew Plc | Reduced pressure therapy apparatuses and methods of using same |
US9901664B2 (en) | 2012-03-20 | 2018-02-27 | Smith & Nephew Plc | Controlling operation of a reduced pressure therapy system based on dynamic duty cycle threshold determination |
US9956121B2 (en) | 2007-11-21 | 2018-05-01 | Smith & Nephew Plc | Wound dressing |
US10299964B2 (en) | 2012-05-15 | 2019-05-28 | Smith & Nephew Plc | Negative pressure wound therapy apparatus |
US10307517B2 (en) | 2010-09-20 | 2019-06-04 | Smith & Nephew Plc | Systems and methods for controlling operation of a reduced pressure therapy system |
US10682446B2 (en) | 2014-12-22 | 2020-06-16 | Smith & Nephew Plc | Dressing status detection for negative pressure wound therapy |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5531038B2 (ja) * | 2012-02-16 | 2014-06-25 | 多田プラスチック工業株式会社 | ダイヤフラム |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2906174A1 (de) * | 1978-09-27 | 1980-04-10 | Franz Borgias Dost | Membran eines kolbenlosen kompressors oder einer kolbenlosen pumpe |
EP0280070A2 (de) * | 1987-02-26 | 1988-08-31 | Depa Gesellschaft Für Verfahrenstechnik Mbh | Doppelmembranpumpe |
US4867653A (en) * | 1988-01-20 | 1989-09-19 | Grace Inc. | Diaphragm pump |
DE29505354U1 (de) * | 1995-03-16 | 1995-06-22 | Abel Gmbh & Co | Membrankolbenpumpe |
-
1997
- 1997-05-23 KR KR1019970020299A patent/KR970075365A/ko not_active Application Discontinuation
- 1997-05-23 JP JP9133925A patent/JPH11159461A/ja active Pending
- 1997-05-23 EP EP97303541A patent/EP0809028A3/de not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2906174A1 (de) * | 1978-09-27 | 1980-04-10 | Franz Borgias Dost | Membran eines kolbenlosen kompressors oder einer kolbenlosen pumpe |
EP0280070A2 (de) * | 1987-02-26 | 1988-08-31 | Depa Gesellschaft Für Verfahrenstechnik Mbh | Doppelmembranpumpe |
US4867653A (en) * | 1988-01-20 | 1989-09-19 | Grace Inc. | Diaphragm pump |
DE29505354U1 (de) * | 1995-03-16 | 1995-06-22 | Abel Gmbh & Co | Membrankolbenpumpe |
Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6276907B1 (en) | 1999-08-12 | 2001-08-21 | Wagner Spray Tech Corporation | Hydraulically driven diaphragm pump |
WO2006092333A1 (de) * | 2005-03-02 | 2006-09-08 | Ami Agrolinz Melamine International Gmbh | Membranpumpe und ein verfahren zur herstellung einer pumpenmembran |
US10744041B2 (en) | 2007-11-21 | 2020-08-18 | Smith & Nephew Plc | Wound dressing |
US11364151B2 (en) | 2007-11-21 | 2022-06-21 | Smith & Nephew Plc | Wound dressing |
US10016309B2 (en) | 2007-11-21 | 2018-07-10 | Smith & Nephew Plc | Wound dressing |
US10231875B2 (en) | 2007-11-21 | 2019-03-19 | Smith & Nephew Plc | Wound dressing |
US11351064B2 (en) | 2007-11-21 | 2022-06-07 | Smith & Nephew Plc | Wound dressing |
US10555839B2 (en) | 2007-11-21 | 2020-02-11 | Smith & Nephew Plc | Wound dressing |
US11179276B2 (en) | 2007-11-21 | 2021-11-23 | Smith & Nephew Plc | Wound dressing |
US11129751B2 (en) | 2007-11-21 | 2021-09-28 | Smith & Nephew Plc | Wound dressing |
US9956121B2 (en) | 2007-11-21 | 2018-05-01 | Smith & Nephew Plc | Wound dressing |
US11623039B2 (en) | 2010-09-20 | 2023-04-11 | Smith & Nephew Plc | Systems and methods for controlling operation of a reduced pressure therapy system |
US11534540B2 (en) | 2010-09-20 | 2022-12-27 | Smith & Nephew Plc | Pressure control apparatus |
US10307517B2 (en) | 2010-09-20 | 2019-06-04 | Smith & Nephew Plc | Systems and methods for controlling operation of a reduced pressure therapy system |
US11027051B2 (en) | 2010-09-20 | 2021-06-08 | Smith & Nephew Plc | Pressure control apparatus |
US11253639B2 (en) | 2011-11-02 | 2022-02-22 | Smith & Nephew Plc | Reduced pressure therapy apparatuses and methods of using same |
US11648342B2 (en) | 2011-11-02 | 2023-05-16 | Smith & Nephew Plc | Reduced pressure therapy apparatuses and methods of using same |
US9084845B2 (en) | 2011-11-02 | 2015-07-21 | Smith & Nephew Plc | Reduced pressure therapy apparatuses and methods of using same |
US10143783B2 (en) | 2011-11-02 | 2018-12-04 | Smith & Nephew Plc | Reduced pressure therapy apparatuses and methods of using same |
US10881764B2 (en) | 2012-03-20 | 2021-01-05 | Smith & Nephew Plc | Controlling operation of a reduced pressure therapy system based on dynamic duty cycle threshold determination |
US11730877B2 (en) | 2012-03-20 | 2023-08-22 | Smith & Nephew Plc | Controlling operation of a reduced pressure therapy system based on dynamic duty cycle threshold determination |
US9901664B2 (en) | 2012-03-20 | 2018-02-27 | Smith & Nephew Plc | Controlling operation of a reduced pressure therapy system based on dynamic duty cycle threshold determination |
US10702418B2 (en) | 2012-05-15 | 2020-07-07 | Smith & Nephew Plc | Negative pressure wound therapy apparatus |
US10299964B2 (en) | 2012-05-15 | 2019-05-28 | Smith & Nephew Plc | Negative pressure wound therapy apparatus |
US10682446B2 (en) | 2014-12-22 | 2020-06-16 | Smith & Nephew Plc | Dressing status detection for negative pressure wound therapy |
US10737002B2 (en) | 2014-12-22 | 2020-08-11 | Smith & Nephew Plc | Pressure sampling systems and methods for negative pressure wound therapy |
US10973965B2 (en) | 2014-12-22 | 2021-04-13 | Smith & Nephew Plc | Systems and methods of calibrating operating parameters of negative pressure wound therapy apparatuses |
US11654228B2 (en) | 2014-12-22 | 2023-05-23 | Smith & Nephew Plc | Status indication for negative pressure wound therapy |
US10780202B2 (en) | 2014-12-22 | 2020-09-22 | Smith & Nephew Plc | Noise reduction for negative pressure wound therapy apparatuses |
Also Published As
Publication number | Publication date |
---|---|
KR970075365A (ko) | 1997-12-10 |
EP0809028A3 (de) | 1999-06-02 |
JPH11159461A (ja) | 1999-06-15 |
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D17P | Request for examination filed (deleted) | ||
AKX | Designation fees paid |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20001201 |