WO2003078841A1 - Pumpe - Google Patents
Pumpe Download PDFInfo
- Publication number
- WO2003078841A1 WO2003078841A1 PCT/EP2003/002524 EP0302524W WO03078841A1 WO 2003078841 A1 WO2003078841 A1 WO 2003078841A1 EP 0302524 W EP0302524 W EP 0302524W WO 03078841 A1 WO03078841 A1 WO 03078841A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pump
- crankcase
- opening
- bearing
- flow
- Prior art date
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
- 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 pump with an oscillating pump part, the pump having a pump housing with a working space and a crankcase delimited by the pump part, in which there is a pump drive with a drive shaft which is mounted in the bearings arranged in the walls of the cube housing. At least one of which is inserted into a through opening in a crankcase wall, and wherein the pump has a suction guide that is separate from the crankcase.
- the solution to this problem according to the invention consists in particular in that at least one flow channel for pressure equalization of the crankcase during the oscillatory movements of the pump part is provided in the crankcase walls and that a flow damper is arranged in the at least one flow channel.
- the pump according to the invention has at least one flow channel in the crankcase walls, which effects a pressure compensation of the crankcase during the oscillating movements of the pump part.
- a flow damper is arranged which flows through Air volume is limited.
- the flow damper in the flow channel is reduced so much by the flow damper that the noise caused by an air flow is also greatly reduced.
- the pump according to the invention is therefore characterized by a particularly low-noise run.
- An oil-free air compressor is known from DE 201 19 407 U1, which has a compressor housing which is divided into a crankshaft housing and a working cylinder by an oscillating piston. A check valve is provided on the piston, allowing air to flow from the crankcase through the check valve into the cylinder.
- the working cylinder is only provided with an air outlet opening and a check valve.
- the crankshaft housing is provided on one side with an air inlet opening that covers an air filter.
- the previously known air compressor does not have an intake guide that is independent of the crankshaft housing.
- a shaft seal which has a labyrinth seal on both sides of a shaft bearing located in a through opening.
- the passages of the labyrinth seal are so narrow that almost no flow passage is possible anyway.
- the passages of the labyrinth seals are kept, at least in regions, under a pressure which is higher than the pressure prevailing outside the bearing. In this way, the labyrinth seals of the known shaft seal can effectively prevent any flow passage in the area of the passage opening.
- a particularly advantageous further development according to the invention of its own worthy of protection provides that at least one through-opening having at least one bearing is designed as a flow channel, and that in the area of the at least one bearing inserted into the through-opening designed as a flow channel, a flow damper covering the clear channel cross-section is arranged.
- at least one through opening having at least one bearing is designed as a flow channel. Since a flow damper is also arranged in the passage opening forming the flow channel, 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 caused by the air flow is also greatly reduced.
- a particularly simple and advantageous embodiment according to the invention provides that the flow damper is formed by one or more disks made of open-pore or the like gas-permeable material with high pneumatic resistance.
- the flow damper can consist, for example, of one or more disks made of open-pore foam material.
- the flow damper is formed by one or more felt or fleece disks.
- At least one relief opening is provided in the crankcase wall, which is preferably covered with a flow damper. Air can be exchanged through this relief opening in the crankcase wall in such a way that the air flow hardly has to force itself through the bearings located in the through openings.
- the flow damper is provided on both sides of the bearing inserted into a through opening.
- the invention described above can be used for example in reciprocating pumps with a reciprocating piston serving as a pump part.
- a preferred development according to the invention provides that the pump as a diaphragm pump and whose oscillating pump part is designed as a membrane.
- 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 pump part.
- a membrane 5 made of elastic material serves as the pump part, which is clamped on its membrane circumference in the pump housing 2 and which can be set into oscillating movements by means of an eccentric drive serving as a pump drive 6.
- the membrane 5 is shown here in a top dead center, in which it fills the working space 3 almost form-fitting.
- 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 roller bearings 8, 9 which are arranged in the crankcase walls and are designed here as ball bearings.
- roller bearings 8, 9 which are arranged in the crankcase walls and are designed here as ball bearings.
- the bearing 8 is inserted into a through 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 through opening 11 leading out of the crankcase 4. So that no grease escapes from the grease-lubricated bearings 8, 9 even when the pump 1 is hot and thus the lubrication is reduced, the bearings 8, 9 are covered on both sides by cover disks 12. These cover plates seal against the ball bearing inner ring without contact.
- a flow damper covering the bearing opening is arranged in the area of the bearings 8, 9 inserted into the through openings 11 of the crankcase walls.
- This flow damper is formed here by discs 13 made of fleece, felt or the like gas-permeable material with high pneumatic resistance, which are provided on both sides of the bearings.
- This flow damper greatly reduces the amount of air flowing through the bearings and in particular through the gap remaining between the inner and outer ring of the bearings. As a result, the flow velocity in the bearing gap drops so much that the noise caused by the air flow is also greatly reduced.
- the pump 1 shown here is therefore characterized by a particularly low-noise run.
- a relief opening 14, 14 / is additionally provided, which is covered here by a flow damper.
- the flow damper assigned to the relief opening 14, 14 ' is also formed from a plurality of gas-permeable discs 15 with high pneumatic resistance, in particular from a plurality of fleece or felt discs.
- the relief opening 14, 14 ' is dimensioned such that the resistance in the region of the Bearing openings of the bearings 8, 9 is larger than that in the area of the relief opening 14, 14 '.
- the disks 15 can also be selected so that their pneumatic resistance is less than the resistance in the area of the bearings 8, 9. In this way, it is avoided that the pressure equalization between the crankcase 4 and the atmosphere is only partially via the bearings 8, 9 takes place; At the same time, it is ensured that the grease required for bearing lubrication cannot flow outside.
- the pump shown here is characterized by a particularly low-noise mode of operation.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/507,856 US7270048B2 (en) | 2002-03-19 | 2003-03-12 | Pump |
EP03714804A EP1485619B1 (de) | 2002-03-19 | 2003-03-12 | Pumpe |
JP2003576816A JP2005527727A (ja) | 2002-03-19 | 2003-03-12 | ポンプ |
DE50307237T DE50307237D1 (de) | 2002-03-19 | 2003-03-12 | Pumpe |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10212239A DE10212239A1 (de) | 2002-03-19 | 2002-03-19 | Pumpe |
DE10212239.3 | 2002-03-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003078841A1 true WO2003078841A1 (de) | 2003-09-25 |
Family
ID=27815784
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/002524 WO2003078841A1 (de) | 2002-03-19 | 2003-03-12 | Pumpe |
Country Status (6)
Country | Link |
---|---|
US (1) | US7270048B2 (de) |
EP (1) | EP1485619B1 (de) |
JP (1) | JP2005527727A (de) |
DE (2) | DE10212239A1 (de) |
TW (1) | TW576895B (de) |
WO (1) | WO2003078841A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007049503A1 (ja) | 2005-10-25 | 2007-05-03 | Nitto Kohki Co., Ltd. | 低振動ポンプ |
US7470066B2 (en) * | 2006-03-22 | 2008-12-30 | Gm Global Technology Operations, Inc. | Pump bearing assembly with seal |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US20110181780A1 (en) * | 2010-01-25 | 2011-07-28 | Barton James M | Displaying Content on Detected Devices |
US20110183654A1 (en) * | 2010-01-25 | 2011-07-28 | Brian Lanier | Concurrent Use of Multiple User Interface 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 |
WO2016103035A2 (en) | 2014-12-22 | 2016-06-30 | Smith & Nephew Plc | Negative pressure wound therapy apparatus and methods |
US9677557B2 (en) * | 2015-01-20 | 2017-06-13 | Hao Hsu | Sleeping system |
EP3292304B1 (de) * | 2015-05-05 | 2020-12-09 | Parker-Hannifin Corporation | Vakuum-/druckmembranminiaturpumpen mit lärmdämpfungsmuffe |
Citations (6)
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 |
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 |
BE1010852A3 (nl) * | 1997-01-15 | 1999-02-02 | Atlas Copco Airpower Nv | Asafdichting. |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US5160773A (en) * | 1991-08-16 | 1992-11-03 | W. L. Gore & Associates, Inc. | Encapsulated felt |
DE20119407U1 (de) * | 2001-11-28 | 2002-02-21 | Shiau Yih Ming | Ölloser Luftkompressor |
-
2002
- 2002-03-19 DE DE10212239A patent/DE10212239A1/de not_active Withdrawn
-
2003
- 2003-03-12 US US10/507,856 patent/US7270048B2/en not_active Expired - Lifetime
- 2003-03-12 EP EP03714804A patent/EP1485619B1/de not_active Expired - Fee Related
- 2003-03-12 WO PCT/EP2003/002524 patent/WO2003078841A1/de active IP Right Grant
- 2003-03-12 JP JP2003576816A patent/JP2005527727A/ja active Pending
- 2003-03-12 DE DE50307237T patent/DE50307237D1/de not_active Expired - Lifetime
- 2003-03-12 TW TW092105352A patent/TW576895B/zh not_active IP Right Cessation
Patent Citations (6)
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 |
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 |
BE1010852A3 (nl) * | 1997-01-15 | 1999-02-02 | Atlas Copco Airpower Nv | Asafdichting. |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007049503A1 (ja) | 2005-10-25 | 2007-05-03 | Nitto Kohki Co., Ltd. | 低振動ポンプ |
EP1950416A1 (de) * | 2005-10-25 | 2008-07-30 | Nitto Kohki Co., Ltd. | Schwingungsarme pumpe |
EP1950416A4 (de) * | 2005-10-25 | 2011-05-18 | Nitto Kohki Co | Schwingungsarme pumpe |
US8162635B2 (en) | 2005-10-25 | 2012-04-24 | Nitto Kohki Co., Ltd. | Low vibration pump |
US7470066B2 (en) * | 2006-03-22 | 2008-12-30 | Gm Global Technology Operations, Inc. | Pump bearing assembly with seal |
Also Published As
Publication number | Publication date |
---|---|
US20050112004A1 (en) | 2005-05-26 |
EP1485619B1 (de) | 2007-05-09 |
JP2005527727A (ja) | 2005-09-15 |
DE50307237D1 (de) | 2007-06-21 |
DE10212239A1 (de) | 2003-10-09 |
US7270048B2 (en) | 2007-09-18 |
TW200304986A (en) | 2003-10-16 |
TW576895B (en) | 2004-02-21 |
EP1485619A1 (de) | 2004-12-15 |
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