EP1151197A1 - Axialkolbenmaschine - Google Patents
AxialkolbenmaschineInfo
- Publication number
- EP1151197A1 EP1151197A1 EP99953619A EP99953619A EP1151197A1 EP 1151197 A1 EP1151197 A1 EP 1151197A1 EP 99953619 A EP99953619 A EP 99953619A EP 99953619 A EP99953619 A EP 99953619A EP 1151197 A1 EP1151197 A1 EP 1151197A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive pulley
- drive
- pistons
- axial piston
- mass
- 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
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
- 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 relates to an axial piston machine, in particular a compressor for the air conditioning system of a motor vehicle, with a housing and a compressor unit arranged in the housing and driven via a drive shaft for the suction and compression of a refrigerant, the compressor unit axially reciprocating pistons and in a cylinder block comprises a drive pulley driving the drive shaft rotating with the drive shaft.
- Axial piston machines or compressors of the type in question are mostly referred to as air conditioning compressors and are known in practice in a wide variety of embodiments.
- Such compressors comprise a housing which encloses a compressor or pump unit driven from outside.
- the pump unit which is designed, for example, as an axial piston machine or an axial piston pump, in turn comprises at least one piston which can be moved back and forth in a cylinder block.
- Such a compressor is usually equipped with a plurality of pistons which are moved axially back and forth when a swash plate is rotated via a receiving plate or when a swivel plate is pivoted in the direction of its longitudinal axis, the receiving plate being rotatably mounted in the housing in the case of a swash plate .
- Swash plate compressors are known in a wide variety of embodiments. By way of example only, reference is made to DE 44 41 721 A1 and DE 196 11 004 A1.
- the compressor comprises a swash plate supported on a drive shaft in order to carry out a uniform rotary movement.
- the swash plate is coupled to a plurality of pistons which can be moved back and forth in a cylinder block, the cylinder-piston arrangement being used to compress a gas.
- the pistons can also be double-acting pistons.
- the swash plate interacts with the receiving disc coupled to the piston, which is arranged in a rotationally fixed manner in the housing of the compressor and is supported on a rotationally fixed abutment by means of a support device. The abutment serves to intercept the torque that is transmitted from the rotating swash plate to the receiving plate.
- the inclination angle of the swash plate or swash plate can be changed by means of a special joint device namely to change the piston stroke in the axial direction.
- the drive disk tilts due to its geometric arrangement or due to the pivot axis there.
- the present invention is therefore based on the object of designing and developing a compressor of the generic type in such a way that it is particularly suitable for realizing a speed-independent delivery rate.
- an axial piston machine achieves the above object by the features of claim 1.
- an axial piston machine is the Type mentioned in the introduction, characterized in that the rotating mass of the drive pulley or of the pivotable part of the drive pulley is dimensioned such that the centrifugal forces which occur when the drive pulley is rotated are sufficient to consciously counteract the pivoting movement of the drive pulley and thus to counteract the piston stroke and thus the delivery rate influence, in particular to reduce or limit.
- the centrifugal forces that occur when the drive disk rotates mean that the drive disk tends to align itself with its axis of rotation parallel to the axis of the drive shaft, thereby reducing the pivoting angle. With a sufficient size, this phenomenon leads to a reduction in the piston stroke, automatically because of the centrifugal forces that occur, which in turn are due to the rotary movement of the drive pulley.
- the mass of the drive pulley is about 10% to 60% above the common mass of all pistons.
- the mass of the drive pulley is about 30% to 50% above the common mass of all pistons in order to achieve the - automatically - regulation of the delivery quantity discussed above.
- the axial piston machine in question here can be an axial piston compressor of the swash plate type or of the swash plate type.
- the rotating drive plate is designed as a swash plate or as a swivel plate, and in the case of the swash plate design, a non-rotatable receiving plate is arranged between the swash plate and the pistons, which acts directly or indirectly on the pistons and / or causes their axial movement.
- the single figure shows, in a longitudinal section, schematically a compressor 1 for the air conditioning system of a motor vehicle.
- the compressor 1 comprises a housing 2, which in turn consists of a first housing part 3 and a second housing part 4.
- the first housing part 3 includes an engine room 5, in which the compressor unit 6 is housed.
- the compressor unit 6 is driven via a pulley 7 and via a drive shaft 8, which in turn is driven by an internal combustion engine of the motor vehicle, not shown in the figure.
- the drive shaft 8 rotates about an axis of rotation 9.
- the drive shaft 8 is mounted in the housing 2 near the pulley 7 by means of a floating bearing 10.
- a swash plate 11 is rotatably but pivotable with the drive shaft 8 connected so that the swash plate 11 rotates together with the drive shaft 8.
- the swash plate 11 is secured against axial displacement, ie against displacement in the direction of the axis of rotation 9.
- the swash plate 11 acts via bearings 12 on a rotatably mounted receiving disc 13 in the housing 2, which is coupled to a piston 15 via a connecting rod 14. Upon rotation of the swash plate 11, the Koblen 15 are moved back and forth over the receiving plate 13 in the direction of the longitudinal axis 16 of the piston 15.
- FIG. Further shows that the pistons 15 are guided in bores 17, the bores 17 being incorporated in a cylinder block 18.
- the cylinder block 18 adjoins a valve disk 19, through which the medium compressed via the compressor unit 6 is conveyed into a pressure chamber 20 called a high pressure chamber.
- the pressure chamber 20 is formed in the second housing part 4.
- the rotating mass of the drive plate - here swash plate 11 - is dimensioned such that the centrifugal forces which occur when the drive plate or swash plate 11 is rotated are sufficient to at least slightly counteract the swiveling-out movement of the swash plate 11 (this increases the piston stroke).
- the stroke of the pistons 15 and thus the delivery rate is influenced, specifically as a function of the mass of the swash plate 11.
- a control is implemented as a function of the mass of the swash plate 11.
- the rotating mass of the swash plate 11 can be increased beyond the "equilibrium state", ie to such an extent that the "effort" of the swash plate 11 outweighs the stroke of the piston 15 decrease. Since the corresponding swivel torque of the swash plate 11 increases with the square of the speed, the stroke of the piston 15 decreases with increasing speed, so that ideally - over the entire speed range - there is an approximately constant delivery rate, and without having to take any further complex measures to change the pressure in the drive chamber or to change the swivel angle of the swash plate 11.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29823804U DE29823804U1 (de) | 1998-09-02 | 1998-09-02 | Axialkolbenmaschine |
| DE29823804U | 1998-09-02 | ||
| PCT/DE1999/002688 WO2000014409A1 (de) | 1998-09-02 | 1999-08-27 | Axialkolbenmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1151197A1 true EP1151197A1 (de) | 2001-11-07 |
| EP1151197B1 EP1151197B1 (de) | 2003-09-24 |
Family
ID=8067372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99953619A Revoked EP1151197B1 (de) | 1998-09-02 | 1999-08-27 | Axialkolbenmaschine |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20020038600A1 (de) |
| EP (1) | EP1151197B1 (de) |
| DE (2) | DE19981701D2 (de) |
| WO (1) | WO2000014409A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1636492B1 (de) * | 2003-06-17 | 2008-07-09 | Valeo Compressor Europe GmbH | Axialkolbenverdichter, insbesondere kompressor für die klimaanlage eines kraftfahrzeuges |
| DE10347709A1 (de) * | 2003-10-14 | 2005-05-12 | Zexel Valeo Compressor Europe | Axialkolbenverdichter, insbesondere Verdichter für die Klimaanlage eines Kraftfahrzeuges |
| DE10354038B4 (de) * | 2003-11-19 | 2006-06-22 | Zexel Valeo Compressor Europe Gmbh | Axialkolbenverdichter, insbesondere Verdichter für die Klimaanlage eines Kraftfahrzeuges |
| AU2004203226B2 (en) * | 2004-07-19 | 2010-07-08 | Ucl Biomedica Plc | Vaccine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2964234A (en) * | 1954-05-13 | 1960-12-13 | Houdaille Industries Inc | Constant clearance volume compressor |
| JP2892718B2 (ja) * | 1989-11-17 | 1999-05-17 | 株式会社日立製作所 | 可変容量形圧縮機 |
| JP2846089B2 (ja) * | 1990-09-14 | 1999-01-13 | 株式会社日立製作所 | 可変容量形圧縮機 |
| JP3417652B2 (ja) * | 1994-04-21 | 2003-06-16 | 株式会社豊田自動織機 | 容量可変型斜板式圧縮機 |
-
1999
- 1999-08-27 DE DE19981701T patent/DE19981701D2/de not_active Expired - Lifetime
- 1999-08-27 DE DE59907137T patent/DE59907137D1/de not_active Expired - Lifetime
- 1999-08-27 WO PCT/DE1999/002688 patent/WO2000014409A1/de not_active Ceased
- 1999-08-27 EP EP99953619A patent/EP1151197B1/de not_active Revoked
-
2001
- 2001-08-07 US US09/924,002 patent/US20020038600A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0014409A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20020038600A1 (en) | 2002-04-04 |
| DE59907137D1 (de) | 2003-10-30 |
| DE19981701D2 (de) | 2001-10-18 |
| WO2000014409A1 (de) | 2000-03-16 |
| EP1151197B1 (de) | 2003-09-24 |
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