EP1206640B1 - Axialkolbentriebwerk mit einem stufenlos verstellbaren kolbenhub - Google Patents
Axialkolbentriebwerk mit einem stufenlos verstellbaren kolbenhub Download PDFInfo
- Publication number
- EP1206640B1 EP1206640B1 EP00965884A EP00965884A EP1206640B1 EP 1206640 B1 EP1206640 B1 EP 1206640B1 EP 00965884 A EP00965884 A EP 00965884A EP 00965884 A EP00965884 A EP 00965884A EP 1206640 B1 EP1206640 B1 EP 1206640B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- axial
- swash plate
- joint
- drive shaft
- 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
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
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
- F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
- F04B27/1036—Component parts, details, e.g. sealings, lubrication
- F04B27/1054—Actuating elements
-
- 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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/26—Control
- F04B1/28—Control of machines or pumps with stationary cylinders
- F04B1/29—Control of machines or pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
- F04B1/295—Control of machines or pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the swash plate
-
- 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
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
- F04B27/14—Control
- F04B27/16—Control of pumps with stationary cylinders
- F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
Definitions
- the invention is based on an axial piston engine with a Infinitely adjustable piston stroke according to the generic term of claim 1.
- Such an axial piston engine is e.g. from the US-A-4,236,875.
- An air conditioning system of a motor vehicle essentially has a refrigerant compressor, a first heat exchanger, the so-called evaporator, a second heat exchanger, an expansion device and piping that connect the components together connect.
- the refrigerant compressor has the task to draw a refrigerant from the evaporator, in which the Refrigerant evaporates under heat, and to a higher one To compress pressure.
- the refrigerant then heat at a higher temperature level give up and experiences one in the expansion organ Throttling to an evaporator pressure level.
- the performance of the refrigerant compressor can be controlled via a drive speed and particularly energetically favorable for axial piston engines Infinitely adjustable via the piston stroke be carried out.
- Known axial piston engines or axial piston compressors for automotive air conditioners have one drive shaft driven by a pulley.
- the crankcase has a swashplate that is non-rotatable and tiltable mounted on the drive shaft via a joint.
- the swashplate drives at least one movable in a cylinder Piston on.
- People is capable of absorbing tensile and compressive loads Piston connected to the swash plate via two articulated stones, each with a joint stone on the Piston facing and on the tread facing away from the piston the swashplate.
- the articulated stones run with their Flat surfaces on the tread of the swash plate with full Peripheral speed with superimposed radial movement, which results in an elliptical career.
- the articulated stones lie with their curved surfaces in molded spherical bearings of the pistons, in which during operation there is a comparatively small relative movement.
- the swash plate be connected to the pistons via a swash plate.
- the Swashplate is either on a housing or on piston rods secured against rotation against the drive shaft. A Bearing between the swash plate and the swash plate takes up the entire relative movement. The swashplate only wobbles due to the rotating swashplate out.
- the piston stroke and thus the performance of the axial piston compressor is about the degree of tilt angle of the swash plate set.
- a large tilt angle creates a large one Piston stroke and high performance, with a small tilt angle there is a small piston stroke and a low output.
- the tilt angle of the swashplate is usually by two stops at a minimum and a maximum Value limited. Usually there are one or two guide pins necessary to guide the tilting movement and a Avoid jamming. The tilt limits or the stops can be integrated in the guide pins.
- the axial piston engine according to the invention has a drive shaft with one on it tiltable in a crankcase and swash plate mounted slidably in the axial direction. A tilting angle and a axial position of the swash plate adjustable.
- the swashplate is driving with at least one, in a cylinder movable piston connected.
- Flow losses between the top of the piston and the Crankcase can be avoided and the total compressor capacity, for example as a cooling capacity for an air conditioning system be used.
- the axial piston engine be operated with a low pressure in the crankcase.
- On Leakage flow of refrigerant from the crankcase through shaft seals outward is roughly proportional to the crankcase pressure.
- With a low pressure can be an expensive seal of the crankcase avoided and a low leakage achieved become. This is especially true with high-volume refrigerants absolute pressures beneficial, in general for a control over a gas pressure difference at the piston high Pressures in the crankcase are required.
- At a low Pressure is also the solubility of the refrigerant in an air conditioning system low in a piston lubricant, thereby a high viscosity can be maintained.
- the swash plate can be suitable with various ones to those skilled in the art appearing constructions tiltable and axially displaceable be carried out.
- the swash plate on a Z-shaft with a tilted bearing bore stored and a rotational movement of the bearing disc with a Stroke movement be superimposed, etc.
- the swash plate on a axially displaceable via an actuating piston of the actuating unit Rod end mounted and the swash plate via a decentralized Joint with a component fixed in the axial direction connected is. It can be a structurally simple and inexpensive Adjustment mechanism can be achieved at the tilt angle and axial position of the swash plate a desired To have context.
- the top dead center of the piston in the cylinder barrel can get and a damaged space and Energy losses can be avoided, making the axial piston engine particularly advantageous as a compressor in one Air conditioning can be used.
- the compressor can be used as pure swash plate compressor or as swash plate compressor be executed. Furthermore, the solution according to the invention be used for gears etc.
- the adjusting piston and the joint head are advantageously in one piece executed, whereby additional components, assembly costs and Costs can be saved.
- the actuator can partially or rotating completely with the drive shaft or be arranged rotatably in a housing. Furthermore, the actuator from the side facing away from the piston to the Swashplate or from the side facing the piston the swashplate act.
- the swash plate is via a joint head 48 of a joint sleeve 64 rotatably connected to the drive shaft 10.
- a control device 18 tiltable on the joint head 48 and displaceable in the axial direction with the joint sleeve 64.
- the actuating piston 44 includes the cylinder over three Seals 68, 70, 72 sealed pressure chamber 74.
- the Swash plate 16 is integral with the swash plate 16 molded connecting element 66 and a decentralized joint 52 connected to the steep housing 54.
- the lifting movement of the Swash plate 16 is by one through the bolt 98 in the slot 96 guided tilting movement superimposed, so that one top dead center 100 of the pistons 26, 28 in the cylinders 22, 24 preserved.
- the volume of the pressure chamber 74 is preferably small.
- the actuating unit 30 or the actuating piston 44 is one the cylinders 22, 24 downstream oil separator 34 an axial bore 102, 104, 106 in the housing 86, in the slide bearing 84 and in the drive shaft 10 and via a radial bore 108 in the drive shaft 10 supplied with pressure oil (Fig. 1, 2nd u. 4).
- the pressure oil is advantageously in the drive shaft 10 fed axially in the middle. In this area is the relative movement between the drive shaft 10 and the slide bearing 84 advantageously low.
- the slide bearing 84 can additionally can be used as a seal.
- the compression spring 92 Located in the oil separator when starting 34 no oil pressure before, the compression spring 92 a maximum tilt angle, which ensures a pressure build-up is.
- the actuating unit 30 is connected to the oil separator via an inflow 38 34 and via an outlet 36 with the crank chamber 14 connected.
- the inlet 38 and the outlet 36 are each over a valve 110, 112 controllable. If a higher actuating force is required, opens valve 110.
- the oil flows at a high pressure level into the actuating unit 30 and acts on the actuating piston 44.
- the valve 112 remains closed. Will be a lesser Actuating force required, valve 112 opens, which Oil drains from the actuator 30 and at the actuator 30 a lesser force is available.
- the swash plate 16 is via the compression spring 92 in the direction of the maximum tilt angle postponed.
- the valve 110 is closed.
- valves 110, 112 are replaced by a throttle and only the inflow 38 or the outflow 36 can be regulated advantageously with an oil level control unit indicated in FIG. 4 40 and with a channel 42 from the oil separator 34 to Crank chamber 14 ensure that there is always sufficient Amount of lubricant available in crankcase 14 stands.
- Fig. 3 shows a section of a variant of an axial piston engine with a control device 20.
- Essentially constant components are basically the same Numbered reference numerals. Regarding the function and not illustrated components can on the embodiment in 1 and 2 are referred.
- the control device 20 has an actuating unit 32 with an actuating piston 46, which in an annular recess 122 of a housing 114 of the axial piston engine is rotatably arranged, which means an additional Adjustment housing can be saved.
- the actuating piston 46 is in the direction of swash plate 16 by a first compression spring 136 loaded, is opposite via two seals 116, 118 sealed the housing 114 and acts via a joint sleeve 120 and one made in one piece with the joint sleeve 120 Articulated head 50 on the swash plate 16 in the axial Direction against a second biased, stronger Compression spring 124.
- the compression spring 124 is in the from the actuating piston 46 opposite direction on a shoulder 126 of a drive shaft 12 supported.
- the swash plate 16 is not closer to a shown decentralized joint supported in the axial direction, so that by the lifting movement of the swash plate 16 a tilting moment arises on the swash plate 16.
- the actuating piston 46 and the joint sleeve 120 are on both sides acting axial bearing 128, the actuating piston 46 inner treads, hinge sleeve 120 and a fastener Form 130 outer treads. With the fastener 130, which has a thread 132 with the joint sleeve 120 is connected, a defined axial play in Thrust bearing 128 can be set. Actuator 32 or the actuating piston 46 is driven by an axial bore 134 Oil separator 34 is supplied with pressure oil, as is the actuating unit 30 (cf. corresponding to Fig. 4).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Description
- Fig. 1
- ein Axialkolbentriebwerk bei maximalem Kolbenhub im Schnitt,
- Fig. 2
- ein Axialkolbentriebwerk bei minimalem Kolbenhub im Schnitt,
- Fig. 3
- einen Ausschnitt einer Variante nach Fig. 1 und
- Fig. 4
- eine Prinzipskizze einer hydraulischen Regelung.
- 10
- Antriebswelle
- 12
- Antriebswelle
- 14
- Kurbelraum
- 16
- Schrägscheibe
- 18
- Regeleinrichtung
- 20
- Regeleinrichtung
- 22
- Zylinder
- 24
- Zylinder
- 26
- Kolben
- 28
- Kolben
- 30
- Stelleinheit
- 32
- Stelleinheit
- 34
- Ölabscheider
- 36
- Abfluß
- 38
- Zufluß
- 40
- Ölstandsregeleinheit
- 42
- Kanal
- 44
- Stellkolben
- 46
- Stellkolben
- 48
- Gelenkkopf
- 50
- Gelenkkopf
- 52
- Gelenk
- 54
- Bauteil
- 56
- Gelenkstein
- 58
- Lauffläche
- 60
- Lauffläche
- 62
- Lager
- 64
- Gelenkhülse
- 66
- Verbindungselement
- 68
- Dichtung
- 70
- Dichtung
- 72
- Dichtung
- 74
- Druckraum
- 76
- Spannring
- 78
- Deckel
- 80
- Axiallager
- 82
- Laufscheibe
- 84
- Gleitlager
- 86
- Gehäuse
- 88
- Lager
- 90
- Lager
- 92
- Druckfeder
- 94
- Spannring
- 96
- Langloch
- 98
- Bolzen
- 100
- Totpunkt
- 102
- Bohrung
- 104
- Bohrung
- 106
- Bohrung
- 108
- Bohrung
- 110
- Ventil
- 112
- Ventil
- 114
- Gehäuse
- 116
- Dichtung
- 118
- Dichtung
- 120
- Gelenkhülse
- 122
- Einstich
- 124
- Druckfeder
- 126
- Absatz
- 128
- Lager
- 130
- Befestigungselement
- 132
- Gewinde
- 134
- Bohrung
- 136
- Druckfeder
Claims (4)
- Axialkolbentriebwerk mit einem stufenlos verstellbaren Kolbenhub, das eine Antriebswelle (10, 12) aufweist, auf der in einem Kurbelraum (14) eine Schrägscheibe (16) verkippbar und in axialer Richtung verschiebbar gelagert ist und mit einer Regeleinrichtung (18, 20), über die ein Kippwinkel und eine axiale Position der Schrägscheibe (16) einstellbar ist und mit mindestens einem mit der Schrägscheibe (16) antriebsmäßig verbundenen, in einem Zylinder (22, 24) bewegbaren Kolben (26, 28), wobei die Regeleinrichtung (18, 20) eine vom Kolben (26, 28) getrennte und hydraulisch angetriebene Stelleinheit (30, 32) aufweist,
dadurch gekennzeichnet, daß
die Stelleinheit (30, 32) von einer vom geförderten Medium des Kolbens (26, 28) unabhängigen Hydraulikeinheit mit Drucköl versorgt ist. - Axialkolbentriebwerk nach Anspruch 1,
dadurch gekennzeichnet, daß
die Stelleinheit (30, 32) hydraulisch angetrieben ist. - Axialkolbentriebwerk nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß
die Schrägscheibe (16) auf einem über einen Stellkolben (44, 46) der Stelleinheit (30, 32) axial verschiebbaren Gelenkkopf (48, 50) gelagert und die Schrägscheibe (16) über ein dezentrales Gelenk (52) mit einem in axialer Richtung fixierten Bauteil (54) verbunden ist. - Axialkolbentriebwerk nach Anspruch 3,
dadurch gekennzeichnet, daß
der Stellkolben (44) und der Gelenkkopf (48) einstückig ausgeführt sind.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19939131A DE19939131A1 (de) | 1999-08-18 | 1999-08-18 | Axialkolbentriebwerk mit einem stufenlos verstellbaren Kolbenhub |
DE19939131 | 1999-08-18 | ||
PCT/EP2000/008084 WO2001012989A1 (de) | 1999-08-18 | 2000-08-18 | Axialkolbentriebwerk mit einem stufenlos verstellbaren kolbenhub |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1206640A1 EP1206640A1 (de) | 2002-05-22 |
EP1206640B1 true EP1206640B1 (de) | 2003-11-12 |
Family
ID=7918769
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00965884A Expired - Lifetime EP1206640B1 (de) | 1999-08-18 | 2000-08-18 | Axialkolbentriebwerk mit einem stufenlos verstellbaren kolbenhub |
Country Status (6)
Country | Link |
---|---|
US (1) | US6957604B1 (de) |
EP (1) | EP1206640B1 (de) |
JP (1) | JP2003507627A (de) |
AU (1) | AU7647700A (de) |
DE (2) | DE19939131A1 (de) |
WO (1) | WO2001012989A1 (de) |
Cited By (2)
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CN105531477A (zh) * | 2013-09-11 | 2016-04-27 | 株式会社丰田自动织机 | 容量可变型斜板式压缩机 |
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US7331271B2 (en) * | 2001-02-08 | 2008-02-19 | R. Sanderson Management, Inc. | Variable stroke/clearance mechanism |
US7841849B2 (en) * | 2005-11-04 | 2010-11-30 | University Of Southern California | Dry material transport and extrusion |
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US7438029B2 (en) * | 2004-03-18 | 2008-10-21 | R. Sanderson Management, Inc. | Piston waveform shaping |
US20050238501A1 (en) * | 2004-04-26 | 2005-10-27 | Brailovskiy Aleksandr M | Revolving yoke load-sensitive displacement-varying mechanism for axial piston hydraulic pump |
EP1766187A1 (de) * | 2004-05-26 | 2007-03-28 | R. Sanderson Management, Inc. | Mechanismus zur variierung von hub und abstand |
US8308470B2 (en) * | 2005-11-04 | 2012-11-13 | University Of Southern California | Extrusion of cementitious material with different curing rates |
MX2009004609A (es) * | 2006-11-02 | 2009-07-02 | Univ Southern California | Dispositivo de medicion y de bombeo. |
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US20160032910A1 (en) * | 2013-03-27 | 2016-02-04 | Kabushiki Kaisha Toyota Jidoshokki | Variable displacement swash plate type compressor |
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CN114278525A (zh) * | 2017-06-27 | 2022-04-05 | Cw控股有限公司 | 可变冲程泵 |
US10670003B1 (en) * | 2019-10-24 | 2020-06-02 | CW Holdings Ltd. | Tilt linkage for variable stroke pump |
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-
1999
- 1999-08-18 DE DE19939131A patent/DE19939131A1/de not_active Withdrawn
-
2000
- 2000-08-18 WO PCT/EP2000/008084 patent/WO2001012989A1/de active Search and Examination
- 2000-08-18 AU AU76477/00A patent/AU7647700A/en not_active Abandoned
- 2000-08-18 US US10/049,690 patent/US6957604B1/en not_active Expired - Fee Related
- 2000-08-18 DE DE50004444T patent/DE50004444D1/de not_active Expired - Lifetime
- 2000-08-18 JP JP2001517056A patent/JP2003507627A/ja active Pending
- 2000-08-18 EP EP00965884A patent/EP1206640B1/de not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105531477A (zh) * | 2013-09-11 | 2016-04-27 | 株式会社丰田自动织机 | 容量可变型斜板式压缩机 |
CN105531477B (zh) * | 2013-09-11 | 2017-06-23 | 株式会社丰田自动织机 | 容量可变型斜板式压缩机 |
CN104948412A (zh) * | 2014-03-28 | 2015-09-30 | 株式会社丰田自动织机 | 可变排量旋转斜板式压缩机 |
Also Published As
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WO2001012989A1 (de) | 2001-02-22 |
DE50004444D1 (de) | 2003-12-18 |
JP2003507627A (ja) | 2003-02-25 |
US6957604B1 (en) | 2005-10-25 |
AU7647700A (en) | 2001-03-13 |
DE19939131A1 (de) | 2001-03-08 |
EP1206640A1 (de) | 2002-05-22 |
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