WO2002002941A1 - Ventilvorrichtung - Google Patents
Ventilvorrichtung Download PDFInfo
- Publication number
- WO2002002941A1 WO2002002941A1 PCT/DE2001/002389 DE0102389W WO0202941A1 WO 2002002941 A1 WO2002002941 A1 WO 2002002941A1 DE 0102389 W DE0102389 W DE 0102389W WO 0202941 A1 WO0202941 A1 WO 0202941A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure area
- valve device
- particular according
- valve
- connection
- 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
- 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
- F04B27/1804—Controlled by crankcase pressure
-
- 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
- F04B27/1804—Controlled by crankcase pressure
- F04B2027/1822—Valve-controlled fluid connection
- F04B2027/1827—Valve-controlled fluid connection between crankcase and discharge chamber
-
- 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
- F04B27/1804—Controlled by crankcase pressure
- F04B2027/1822—Valve-controlled fluid connection
- F04B2027/1831—Valve-controlled fluid connection between crankcase and suction chamber
-
- 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
- F04B27/1804—Controlled by crankcase pressure
- F04B2027/1886—Open (not controlling) fluid passage
- F04B2027/189—Open (not controlling) fluid passage between crankcase and discharge chamber
-
- 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
- F04B2205/00—Fluid parameters
- F04B2205/01—Pressure before the pump inlet
-
- 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
- F04B2205/00—Fluid parameters
- F04B2205/05—Pressure after the pump outlet
Definitions
- the invention is based on a valve device for regulating the stroke adjustment of swash plate and swash plate compressors with a variable stroke, wherein the displacement pressure is regulated for the stroke adjustment in such adjusting disc compressors.
- a connection is created from the high pressure area to the engine pressure area and a connection from the engine pressure area to the suction area, these connections being able to be influenced by throttles or valve arrangements.
- a valve device for regulating a stroke adjustment of adjusting disk compressors, such as swashplate / or swashplate compressors with a variable stroke, the drive chamber pressure being regulated for the stroke adjustment of the disk.
- a first connection from the high pressure area to the engine pressure area and possibly a second connection from the engine pressure area to the suction pressure area can be influenced, the first connection being able to be influenced by a first valve element and the second connection being able to be influenced by a second valve element, and the first valve element and / or the second Valve element are essentially leak-free when closed.
- a valve device which contains both valve elements and can have three switching positions, a first switching position connecting the high pressure area to the engine pressure area and closing the engine pressure area from the suction pressure area, a second switching position closing the high pressure area from the driving pressure area and the engine pressure area with the suction pressure area connects and a third switch position both separates the high pressure area from the engine pressure area and the engine pressure area from
- a valve device causes the lowest possible power loss for the regulation of the compressor.
- the valve elements are seat valves and can be actuated by an actuating device, such as an actuator.
- valve device in which a targeted leakage from the high pressure area to the engine room pressure area can additionally be set as a safety device, in order to ensure a safe operating state in the event of the control failing by swiveling back the compressor and returning oil from the high pressure area.
- a valve device is also preferred, in which the actuating device can assume three stable switching positions, a right position, a left position and a middle position. Furthermore, a valve device is proposed in which two of the switching positions, in particular the right and the left switching position, can be achieved by a reversible, remotely actuatable force, while the middle switching position is achieved by restoring forces, such as spring forces.
- a valve device contains an actuating device with an electromagnet.
- the electromagnet consists of a permanent magnet armature and a coil through which a direct current can flow, which can be reversed if necessary.
- a valve device is also proposed in which the actuating device can be represented by mechanical elements, such as bellows and / or throttles and springs and / or other electrical, hydraulic or pneumatic elements.
- the actuating device can be actuated periodically in a valve device.
- a control circuit for the actuation of the actuating device uses a pressure measurement as one of possibly several input signals for the control circuit.
- valve device in which the electromagnet can have a single coil or a double coil. Also according to the invention has one Valve device the actuating device a switching time of ⁇ 20ms and can be clocked with this switching time in continuous operation. Furthermore, the invention proposes a valve device in which the valve device enables the disk to be swiveled back and forth quickly in the event of pressure surges and control interventions. Cooling of the valve device by the refrigerant from the suction channel is also preferred, either by suitably passing the refrigerant through the valve device, by attaching the device to the housing in the region of the suction channel, or by installing the valve so that there is a significant part of suction-side refrigerant is surrounded.
- Fig. 1 shows the valve device in a first switching position A.
- Fig. 2 shows the same valve device in a second switching position B.
- Fig. 3 shows the valve device in a third switching position C, which corresponds to a central position of the valve device.
- valve device in switch position A enables the supply of high-pressure refrigerant into the drive room.
- a connection 2 leads from the high pressure side 3 of the compressor to the drive chamber side 4.
- a connection 5 leads from the drive chamber 4 to the suction pressure side 6.
- a Valve element in the form of a piston 8 movably arranged which is pressed by a spring 9 against a permanent magnet armature 14.
- a valve element in the form of a second valve piston 11 and a spring 12 are arranged in a space 10 arranged transversely to the connection 5, the valve piston 11 in this position being pressed with the piston leading edge into a valve seat device 17 (not shown in detail here) is and hermetically seals line 5.
- the permanent magnet armature 14 is located in a further recess 13, which is arranged within a coil 15. In this illustration, a direct current flows through the coil 15, which builds up a magnetic field such that the permanent magnet moves into the left end position shown here and thus with a collar 18 against one Stop 19 is pressed.
- the permanent magnet 14 holds the piston 8 against the spring 9 in an open position, so that through the connection 2 from the high pressure side 3 to the drive chamber 4 via an annular gap 21, the compressor medium can flow into the drive chamber, which leads to an increase in the Pressure in the drive room and thus to a swinging back of the disc in the direction of a smaller compressor stroke.
- the opening characteristic of this valve opening can also be shaped in any other way. It is particularly important for this valve device according to the invention that a correspondingly adjustable opening for the pressure medium flow can be realized and that in the closed state the respectively closed valve elements bring about a hermetic, leak-free seal.
- the recess 13, in which the permanent magnet armature moves, is.
- a second stop 20 which corresponds to the area of the federal government 18, completed.
- a gap 16 can be seen between the right surface of the permanent magnet armature and the closed valve piston 11, so that the spring 12 can press the piston 11 securely into the seat 17 in a sealing manner.
- FIG. 2 shows the same valve device in a second switching position B, in which the outflow of refrigerant from the drive chamber to the suction side is made possible.
- a direct current which is reversed in polarity as in FIG. 1 flows through the magnetic coil 15, which means that the permanent magnet armature 14 now moves in the opposite direction and the collar 18 is pressed against the stop 20.
- the permanent magnet armature now opens the piston 11 against the force of the spring 12, and the pressure medium flow from the drive chamber 4 can flow to the suction side 6, which leads to the pressure in the drive chamber being lowered and the compressor disc swiveling further.
- connection 2 from the high-pressure side 3 to the drive chamber 4 is hermetically sealed by the piston 8 in its seat 23.
- valve device in a third position C, in which the coil does not have a current flowing through it.
- the permanent magnet armature 14 will therefore held in a central position by the two springs 9 and 12 via the pistons 8 and 11. It is important that there is so much play between the permanent magnet armature and the pistons 11 and 8 (which is not shown in the drawing here) that both pistons 8 and 11 can hermetically seal in their respective valve seats 23 and 17 and thus this valve device is absolutely leak-free is what is necessary for low-loss control of the swivel plate angle.
- a constant throttle 24 is conceivable, here shown in FIG. 3 on the left as a narrow channel in the housing part 1, which, even in the event of a failure of the valve control device or the associated control circuit, enables and allows a certain refrigerant flow from the high pressure side 3 to the engine room side 4 so that the swivel plate can be swiveled back to the minimum position and continuous oil return from the high pressure area is possible.
- the control of the two hermetically sealing valve pistons 8 and 11 can be carried out by a somehow differently designed, remote-controlled actuating device which corresponds in structure to the function of the permanent magnet armature and the DC coil described here.
- All forms of remote-controlled force devices such as bellows, hydraulic or pneumatic devices, which apply appropriate forces to the pistons via throttles and springs, or other types of electrical elements, such as electrical magnets with two coils, are conceivable.
- An essential aim of the invention is to generate the lowest possible power loss for the control of such a compressor compared to known control strategies, which is achieved in particular by hermetically sealing the three pressure ranges mentioned.
- this embodiment of the invention saves complex sealing constructions, as used in Known valve devices with bellows and solenoid valves are known in the prior art.
- Another advantage of the invention is that it may not be necessary to use separate throttle bores which are sensitive to dirt, for example with bores of 0.2 mm in diameter. Due to the relatively quickly controllable valve cross-sections, this valve device also allows the compressor to be swiveled back and forth quickly in the event of pressure surges in order to set a lower power consumption and to change the mass flow. By periodically actuating the limit switch positions, the drive chamber pressure can be regulated in such a way that stable positions of the swivel plate can be adjusted. By designing the valve elements as seat valves, an improvement in efficiency of 6-10% can be predicted compared to slide valves which have a corresponding gas leakage. The switching times of such a valve device are preferably 20 ms or less and can optionally be used in pulse width modulated operation.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Multiple-Way Valves (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10193282T DE10193282D2 (de) | 2000-07-06 | 2001-06-27 | Ventilvorrichtung |
AU2001276282A AU2001276282A1 (en) | 2000-07-06 | 2001-06-27 | Valve device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10032903A DE10032903A1 (de) | 2000-07-06 | 2000-07-06 | Ventilvorrichtung |
DE10032903.9 | 2000-07-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002002941A1 true WO2002002941A1 (de) | 2002-01-10 |
Family
ID=7648027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2001/002389 WO2002002941A1 (de) | 2000-07-06 | 2001-06-27 | Ventilvorrichtung |
Country Status (5)
Country | Link |
---|---|
AU (1) | AU2001276282A1 (de) |
DE (3) | DE10032903A1 (de) |
FR (1) | FR2811734B1 (de) |
IT (1) | ITMI20011429A1 (de) |
WO (1) | WO2002002941A1 (de) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4526516A (en) * | 1983-02-17 | 1985-07-02 | Diesel Kiki Co., Ltd. | Variable capacity wobble plate compressor capable of controlling angularity of wobble plate with high responsiveness |
US4838766A (en) * | 1986-12-05 | 1989-06-13 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Method for controlling displacement of a variable displacement wobble plate type compressor |
US5282329A (en) * | 1992-04-03 | 1994-02-01 | Kabushiki Kaisha Saginomiya Seisakusho | Solenoid type control valve |
US5332365A (en) * | 1991-10-23 | 1994-07-26 | Sanden Corporation | Slant plate type compressor with variable capacity control mechanism |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3416637A1 (de) * | 1984-05-05 | 1985-11-14 | Diesel Kiki Co. Ltd., Tokio/Tokyo | Taumelscheibenverdichter |
JPS63243469A (ja) * | 1987-03-28 | 1988-10-11 | Toyota Autom Loom Works Ltd | 揺動斜板型圧縮機におけるクランク室圧力の制御機構 |
DE4033422C2 (de) * | 1990-10-20 | 1999-07-15 | Bosch Gmbh Robert | Taumelscheibenkompressor |
-
2000
- 2000-07-06 DE DE10032903A patent/DE10032903A1/de not_active Withdrawn
-
2001
- 2001-06-27 AU AU2001276282A patent/AU2001276282A1/en not_active Abandoned
- 2001-06-27 DE DE10193282T patent/DE10193282D2/de not_active Expired - Fee Related
- 2001-06-27 DE DE10130842A patent/DE10130842A1/de not_active Withdrawn
- 2001-06-27 WO PCT/DE2001/002389 patent/WO2002002941A1/de active Application Filing
- 2001-07-03 FR FR0108800A patent/FR2811734B1/fr not_active Expired - Fee Related
- 2001-07-05 IT IT2001MI001429A patent/ITMI20011429A1/it unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4526516A (en) * | 1983-02-17 | 1985-07-02 | Diesel Kiki Co., Ltd. | Variable capacity wobble plate compressor capable of controlling angularity of wobble plate with high responsiveness |
US4838766A (en) * | 1986-12-05 | 1989-06-13 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Method for controlling displacement of a variable displacement wobble plate type compressor |
US5332365A (en) * | 1991-10-23 | 1994-07-26 | Sanden Corporation | Slant plate type compressor with variable capacity control mechanism |
US5282329A (en) * | 1992-04-03 | 1994-02-01 | Kabushiki Kaisha Saginomiya Seisakusho | Solenoid type control valve |
Also Published As
Publication number | Publication date |
---|---|
DE10032903A1 (de) | 2002-01-17 |
DE10130842A1 (de) | 2002-03-14 |
FR2811734B1 (fr) | 2005-10-28 |
ITMI20011429A1 (it) | 2003-01-05 |
ITMI20011429A0 (it) | 2001-07-05 |
FR2811734A1 (fr) | 2002-01-18 |
DE10193282D2 (de) | 2003-04-24 |
AU2001276282A1 (en) | 2002-01-14 |
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