EP1838963A1 - Axial angetriebene kolben-zylinder-einheit - Google Patents
Axial angetriebene kolben-zylinder-einheitInfo
- Publication number
- EP1838963A1 EP1838963A1 EP06701389A EP06701389A EP1838963A1 EP 1838963 A1 EP1838963 A1 EP 1838963A1 EP 06701389 A EP06701389 A EP 06701389A EP 06701389 A EP06701389 A EP 06701389A EP 1838963 A1 EP1838963 A1 EP 1838963A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- piston rod
- cylinder
- drive element
- elastic means
- 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
Links
- 239000012530 fluid Substances 0.000 claims description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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
-
- 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
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G1/00—Hot gas positive-displacement engine plants
- F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
- F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G1/00—Hot gas positive-displacement engine plants
- F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
- F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
- F02G1/0435—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines the engine being of the free piston type
-
- 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
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
- F04B35/045—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids
-
- 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
- F04B39/0005—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 adaptations of pistons
-
- 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
- F04B39/0005—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 adaptations of pistons
- F04B39/0022—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 adaptations of pistons piston rods
Definitions
- the invention relates to an axially driven »» piston-cylinder unit according to the preamble of patent claim 1.
- Such a piston-cylinder unit is known for example from US 5, 525, 845.
- the piston rod is rigidly connected both to the axially movable drive element of the linear drive and to the piston.
- a state may occur in which the axial vibration generated by the linear motor of the movable driving member, piston rod and piston undergoes an increase in the oscillation driving amplitude so that the piston can abut against the bottom of the cylinder bore with the piston crown , This can cause damage to the piston crown or the head-side end wall of the cylinder bore.
- Object of the present invention is to design a generic axially driven piston-cylinder unit so that the risk of destruction of the piston or the cylinder is reduced.
- the piston rod is exactly fixed both on the piston and on the drive element and there is no relative movement between the drive element, piston rod and piston. Only in case of overload, when the force applied by the drive element force exceeds the biasing force of the elastic device, there is a relative movement between the drive element and the piston rod or between the piston rod and the piston.
- Piston rod but without the mass of the drive element on the head-side end wall of the cylinder bore.
- the resulting shock pulse is compared to a rigid unit of piston, piston rod and drive element significantly lower, so that the risk of damage to the piston crown or the head-side end wall of the cylinder bore is significantly reduced.
- the piston head is provided with an opening through which the first end of the
- Piston rod is passed, wherein the piston rod is movable relative to the piston in the axial direction of the piston, wherein the elastic means between the piston rod and the piston is provided and wherein the elastic means biases the piston rod from the piston to the drive means, wherein the piston rod is provided with an end stop which prevents the piston rod emerges from the opening.
- the impact on the head-side end wall mass is reduced even further, as well as the mass of the piston rod is decoupled from the piston.
- the piston rod is sealingly guided in the opening, for which purpose a seal surrounding the piston rod is preferably provided.
- the compression efficiency is improved because the medium compressed by the piston can not escape through the annular gap opening surrounding the piston rod.
- the drive element is provided with an opening through which the second end of the piston rod is passed, that the piston rod is movable relative to the drive element in the axial direction of the drive element, that the elastic means between the piston rod and the drive element is provided and that the elastic means biases the piston rod from the drive element to the piston, wherein the piston rod is provided with an end stop, which prevents the piston rod from emerging from the opening.
- the decoupling takes place by means of the elastic means on the side of the drive element, so that between the piston and the piston rod a fixed connection can be provided and a complex sealing of an opening in the piston head need not be provided.
- the elastic means comprises a spring or is formed by a spring. Particularly preferred here is the provision of a plate spring arrangement or a loaded on pressure or train coil spring.
- a linear drive for example a linear motor, wherein the piston is acted upon for reciprocating drive by a movable drive element of the linear drive.
- a preferred application of the axially driven piston-cylinder unit according to the invention is the use in a compressor for generating a pressurized fluid.
- Fig. 1 shows a first embodiment of the invention with a decoupling in the region of the piston
- Fig. 2 is an enlarged view of the passage of the piston rod through the piston crown in the embodiment of FIG. 1.
- Fig. 1 is a longitudinal section through a piston-cylinder unit 1 with a cylinder 2 and a piston 3 is shown.
- the cylinder 2 is provided with a cylinder bore 10, in which the piston 3 in the direction of the longitudinal axis X of the cylinder bore 10 is moved back and forth freely and taken.
- the piston 3 is gas-stored in the cylinder 2.
- a valve 20 shown schematically inlet channel 22.
- an outlet channel 24 is provided which has a corresponding valve 26; This outlet channel also opens into the ZyIinderbohrung 10th
- the piston-cylinder unit 1 shown is part of a piston working machine in which the ejected fluid is gaseous, as is the case for example with a compressor.
- the invention is basically also applicable to other piston working machines, such as pumps.
- the piston 3 is driven by a longitudinally movable drive element 50 of a linear drive 5 oscillating along an axis Y, which is shown only schematically in the figure.
- the movable drive element 50 is mechanically connected to the piston 3 via a piston rod 4.
- the piston rod 4 is inelastic in the axial direction and thus able to transmit axial forces from the drive element 50 to the piston 3.
- the piston rod 4 is rigidly connected to the drive element 50.
- the piston rod 4 is displaceably guided in the direction of the longitudinal axis X of the cylinder 2 or the longitudinal axis X 1 of the piston 3 coaxial therewith.
- the piston rod 4 is mounted in the interior of the piston 3 by an annular radial support 31, wherein the
- Radial support 31 at its radial outer circumference with the piston 3 is firmly connected and has a central opening through which the piston rod 4 is guided axially displaceable.
- a central passage opening 16 ' is provided (Fig. 2), through which the piston rod 4 is guided axially displaceable with its piston-side first end 4'.
- the piston rod 4 is provided with an end-face mushroom-shaped head 41, whose curved surface faces the cylinder head 23.
- the mushroom-shaped head 41 forms on its rear, facing the piston head 16 side an annular bearing surface 41 ', whose outer diameter is greater than the diameter of the opening 16' in the piston head 16, so that the piston rod 4 secured against slipping in the figures to the left is.
- the piston-side first end 4 'of the piston rod 4 has a reduced diameter relative to the rest of the piston rod 4.
- a seal 43 may be arranged around this diameter, which seals the piston-side first end section 4 'of the piston rod 4 with respect to the inner circumference of the opening 16' of the piston head 16.
- annular, curved plate spring 44 is provided, whose outer periphery is anchored to the piston 3 and which has a central bore through which the piston rod 4 is passed, wherein the inner circumference of annular plate spring 44 is anchored to the piston rod 4.
- the plate spring 44 is shown in FIG. 1 to the left, ie to the drive element 50, convexly curved, so that the plate spring 44 is a bias on the piston rod 4 in FIG. 1 to the left, whereby the mushroom-shaped head 41 at the piston-side first end 4 'of the piston rod 4 with its annular surface 41' against the Piston bottom 16 is brought under the tension of the spring 44 to the plant.
- Cylinder volume 18 is formed in the cylinder head 23. In this way, the impulse upon impact of the piston head 16 is limited to the head-side end wall 12 to the mass of the piston 3, while the mass of the drive member 50 and the piston rod 4 of the spring 44 in time after
- piston rod 4 may also be fixedly connected to the piston 3, in which case the axially displaceable mounting of the piston rod 4 in the drive element 50 is provided and the elastic element formed by the spring 44 is provided between the piston rod 4 and the drive element 50.
- the invention is not limited to the above embodiment, which merely serves to generally explain the essence of the invention.
- the device according to the invention may also assume other than the above-described embodiments.
- the device can in particular features which represent a combination of the individual individual features of the claims.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Actuator (AREA)
- Compressor (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005001470A DE102005001470B3 (de) | 2005-01-12 | 2005-01-12 | Axial angetriebene Kolben-Zylinder-Einheit |
| PCT/EP2006/000191 WO2006074915A1 (de) | 2005-01-12 | 2006-01-11 | Axial angetriebene kolben-zylinder-einheit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1838963A1 true EP1838963A1 (de) | 2007-10-03 |
| EP1838963B1 EP1838963B1 (de) | 2015-07-08 |
Family
ID=35999600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06701389.6A Expired - Lifetime EP1838963B1 (de) | 2005-01-12 | 2006-01-11 | Kompressor mit axial angetriebener kolben-zylinder-einheit |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20080118375A1 (de) |
| EP (1) | EP1838963B1 (de) |
| JP (1) | JP2008527271A (de) |
| KR (1) | KR20070106998A (de) |
| CN (1) | CN101103199B (de) |
| DE (1) | DE102005001470B3 (de) |
| RU (1) | RU2371609C2 (de) |
| WO (1) | WO2006074915A1 (de) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004062300A1 (de) * | 2004-12-23 | 2006-07-13 | BSH Bosch und Siemens Hausgeräte GmbH | Linearverdichter |
| BRPI0902557B1 (pt) * | 2009-07-08 | 2020-03-10 | Embraco Indústria De Compressores E Soluções E Refrigeração Ltda. | Compressor linear |
| BRPI1105480A2 (pt) * | 2011-11-16 | 2016-01-19 | Whirlpool Sa | restritor de fluxo e compressor de gás |
| JP5492917B2 (ja) * | 2012-02-01 | 2014-05-14 | 株式会社豊田自動織機 | 可変容量型斜板式圧縮機 |
| EP3130804B1 (de) * | 2012-08-24 | 2018-12-12 | LG Electronics Inc. | Hubkolbenverdichter |
| BR102013003056A2 (pt) * | 2013-02-07 | 2014-09-16 | Whirlpool Sa | Restritor de fluxo e compressor de gás |
| KR102121585B1 (ko) * | 2013-09-16 | 2020-06-11 | 엘지전자 주식회사 | 왕복동식 압축기 |
| KR102201629B1 (ko) * | 2014-06-26 | 2021-01-12 | 엘지전자 주식회사 | 리니어 압축기 및 이를 포함하는 냉장고 |
| RU2694104C1 (ru) * | 2018-09-07 | 2019-07-09 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Омский государственный технический университет" | Поршневой компрессор |
| CN109209827A (zh) * | 2018-10-22 | 2019-01-15 | 安徽寅时压缩机制造有限公司 | 一种应用于蚌线压缩机的挤压活塞 |
| CN109469627B (zh) * | 2019-01-07 | 2024-04-26 | 苏州经贸职业技术学院 | 一种离心泵便携式抽气装置及离心泵设备 |
| CN111622922B (zh) * | 2019-02-28 | 2021-05-25 | 青岛海尔智能技术研发有限公司 | 一种双气缸线性压缩机和制冷设备 |
| US11125184B2 (en) * | 2019-05-21 | 2021-09-21 | General Electric Company | Constant density heat exchanger and system for energy conversion |
| KR102268253B1 (ko) * | 2019-10-24 | 2021-06-23 | 엘지전자 주식회사 | 압축기 |
| KR102432491B1 (ko) * | 2020-12-30 | 2022-08-18 | 엘지전자 주식회사 | 리니어 압축기 |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3161185A (en) * | 1962-11-07 | 1964-12-15 | Justinien Marcel | Elastically connected pistons for the automatic adjustment of volumetric compression rations |
| US312495A (en) * | 1885-02-17 | Single acting ensue | ||
| US1450177A (en) * | 1922-01-11 | 1923-04-03 | Henri J Houpert | Internal-combustion-engine piston |
| US2210431A (en) * | 1938-07-27 | 1940-08-06 | Pytlewski Steven | Air compressor |
| US3556690A (en) * | 1967-10-02 | 1971-01-19 | Krueger Gmbh H | Motor-driven pump for delivering liquids at a pressure substantially constant and independent from the delivery |
| US3602199A (en) * | 1969-10-24 | 1971-08-31 | Richard E Diggs | Automatic livestock sprayer |
| US3659502A (en) * | 1970-08-28 | 1972-05-02 | Milton I Friedman | Reciprocating engines |
| US3951046A (en) * | 1974-05-10 | 1976-04-20 | General Motors Corporation | Push rod and tappet assembly |
| US4300873A (en) * | 1979-05-12 | 1981-11-17 | Lucas Industries Limited | Fuel injection systems |
| GB2080484A (en) * | 1980-07-21 | 1982-02-03 | Snell Vivian Robert | Connecting rods |
| BR8707047A (pt) * | 1987-12-17 | 1989-07-18 | Brasil Compressores Sa | Aperfeicoamento em compressor de pistao alternativo para pequenas maquinas de refrigeracao e seu processo de montagem |
| FR2651838B1 (fr) * | 1989-09-13 | 1994-06-03 | Automotive Prod France | Ensemble de piston destine a etre utilise avec un cylindre hydraulique. |
| JPH03121280A (ja) * | 1989-10-04 | 1991-05-23 | Sanyo Electric Co Ltd | 圧縮機のピストン装置 |
| IT1256214B (it) * | 1992-12-22 | 1995-11-29 | Whirlpool Italia | Gruppo compressore in un motocompressore di facile montaggio |
| US5525845A (en) * | 1994-03-21 | 1996-06-11 | Sunpower, Inc. | Fluid bearing with compliant linkage for centering reciprocating bodies |
| GB9620227D0 (en) * | 1996-09-27 | 1996-11-13 | Galvin George F | Energy storage device |
| IT241570Y1 (it) * | 1996-10-29 | 2001-05-09 | Zanussi Elettromecc | Compressori frigoriferi con pistone perfezionato |
| DE19955688A1 (de) * | 1999-11-19 | 2001-05-23 | Leybold Vakuum Gmbh | Kolben-Vakuumpumpe |
| JP2001182652A (ja) * | 1999-12-28 | 2001-07-06 | Sanyo Electric Co Ltd | リニアコンプレッサ |
| KR20030073446A (ko) * | 2002-03-11 | 2003-09-19 | 엘지전자 주식회사 | 왕복동식 압축기의 피스톤 충돌 완화구조 |
| CN1249342C (zh) * | 2002-05-17 | 2006-04-05 | 乐金电子(天津)电器有限公司 | 往复式压缩机 |
-
2005
- 2005-01-12 DE DE102005001470A patent/DE102005001470B3/de not_active Expired - Fee Related
-
2006
- 2006-01-11 JP JP2007550748A patent/JP2008527271A/ja active Pending
- 2006-01-11 KR KR1020077015877A patent/KR20070106998A/ko not_active Withdrawn
- 2006-01-11 RU RU2007124544/06A patent/RU2371609C2/ru not_active IP Right Cessation
- 2006-01-11 WO PCT/EP2006/000191 patent/WO2006074915A1/de not_active Ceased
- 2006-01-11 EP EP06701389.6A patent/EP1838963B1/de not_active Expired - Lifetime
- 2006-01-11 CN CN2006800021622A patent/CN101103199B/zh not_active Expired - Fee Related
- 2006-01-11 US US11/795,093 patent/US20080118375A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006074915A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20070106998A (ko) | 2007-11-06 |
| US20080118375A1 (en) | 2008-05-22 |
| EP1838963B1 (de) | 2015-07-08 |
| WO2006074915A1 (de) | 2006-07-20 |
| DE102005001470B3 (de) | 2006-07-20 |
| RU2007124544A (ru) | 2009-02-20 |
| JP2008527271A (ja) | 2008-07-24 |
| RU2371609C2 (ru) | 2009-10-27 |
| CN101103199A (zh) | 2008-01-09 |
| CN101103199B (zh) | 2011-03-23 |
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