CN1029023C - Slant plate type combressor with varibk displacement mechanism - Google Patents

Slant plate type combressor with varibk displacement mechanism Download PDF

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Publication number
CN1029023C
CN1029023C CN92103385A CN92103385A CN1029023C CN 1029023 C CN1029023 C CN 1029023C CN 92103385 A CN92103385 A CN 92103385A CN 92103385 A CN92103385 A CN 92103385A CN 1029023 C CN1029023 C CN 1029023C
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CN
China
Prior art keywords
piston
compressor
cylinder
transmission shaft
suction chamber
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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 - Fee Related
Application number
CN92103385A
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Chinese (zh)
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CN1067096A (en
Inventor
寺内清
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Sanden Corp
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Sanden Corp
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Publication date
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Publication of CN1067096A publication Critical patent/CN1067096A/en
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Publication of CN1029023C publication Critical patent/CN1029023C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • 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
    • F04B25/00—Multi-stage pumps
    • F04B25/04—Multi-stage pumps having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • 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
    • F04B51/00—Testing machines, pumps, or pumping installations
    • 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
    • F04B2027/1809—Controlled pressure
    • F04B2027/1813—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
    • F04B2027/1831—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
    • F04B2027/184—Valve controlling parameter
    • F04B2027/1845—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
    • F04B2201/00—Pump parameters
    • F04B2201/02—Piston parameters
    • F04B2201/0201—Position of the piston

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressor (AREA)

Abstract

A slant plate type compressor with a variable displacement mechanism is disclosed which comprises a compressor housing enclosing a crank chamber. A plurality of cylinders are formed for defining compression space in the cylinder block. A piston is slidably fitted with each of the cylinders. The stroke of the piston changes in response to the change of the slant angle and defines compression volume in the compression space to change the capacity of the compressor. The position of the top dead center of the piston changes within a certain range in response to the change of the stroke of the piston. A suction chamber and a discharge chamber are enclosed within the compressor housing. A communication path links the crank chamber with the suction chamber. The detecting device is disposed adjacent the cylinder for detecting the position of the top dead center of the piston in the compression space. Therefore, the detecting device can directly detect its displacement correctly.

Description

Slant plate type combressor with varibk displacement mechanism
The present invention relates to a kind of compressor that has the variable exhaust measuring mechanism, particularly a kind of oblique tray type compressor that has the variable exhaust measuring mechanism in this compressor, can change the upper dead center position of this piston according to the variation of stroke of piston.
Traditional oblique tray type compressor that has the variable exhaust measuring mechanism as using in automotive air-conditioning system, is the air displacement that requires to control compressor according to air-conditioning loading condition and other.But, because it is structurally very complicated to be used for detecting the mechanism of air displacement of this compressor, so its cost height, such mechanism do not used usually.
In other words, if can easily detect the air displacement of compressor, then this information can help to be used for to control the control gear of the control system or the air-conditioning system of motor.
Being used for the traditional detection device of detection compressor air-discharging amount discloses in open communique 62-21867 number of Japan Patent.Described detection device comprises a non-contact type position detecting device, and it has one to survey thing, and to be used for utilizing the variation of static content or the variation of Magnetic flux density, this non-contact type position detecting device only can be surveyed about 1 millimeter scope.Therefore, come the variation of direct detection angle variation swash plate position greatly just difficult with this detection device.Equally, this detection device also is difficult to the variation of direct detection to position of piston, i.e. the variation of stroke of piston is because stroke of piston changes in 1～30 millimeter scope.So, under this detection device situation, just be necessary to use a kind of electronics counting circuit, the variation of the pulse width ratio of self-test device becomes the compressor air-discharging amount during with this compressor rotatingshaft rotation, so its cost is just very high.
US-4,822,252 disclose a kind of variable exhaust capacity compressor, and it is provided with the position that the magnetic transducing device is surveyed balance near cylinder, but it still fails to address the above problem well.
Therefore, the purpose of this invention is to provide a kind of oblique tray type compressor that has the variable exhaust measuring mechanism, it includes a detection device of its air displacement of direct detection exactly, and this detection device low price, simple structure.
According to the oblique tray type compressor that has the variable exhaust measuring mechanism of the present invention, it includes a compressor housing, and a crankshaft room is arranged in this housing.Compressor housing comprises a cylinder block, is formed with many cylinders in this cylinder block, to constitute compaction cavum.Also have a plurality of pistons that cooperate slidably with each cylinder, driving mechanism and piston coupling are so that make piston to-and-fro motion in this cylinder.Driving mechanism comprises a transmission shaft that can be rotated to support in this housing, and coupling device becomes rotatablely moving of transmission shaft the to-and-fro motion of piston by the transmission shaft piston that is coupled rotatably.Described coupling device comprises a swash plate, this swash plate has a surface that becomes a tilt angle with the perpendicular plane of transmission shaft, described tilt angle changes along with the variation of crankshaft room's internal pressure, stroke of piston changes according to the variation at tilt angle, in compaction cavum, form a compression volume, to change this cylinder of compressor displacement volume.The upper dead center position of piston changes within the specific limits according to the variation of stroke of piston.One suction chamber and a discharge chamber are arranged in this compressor housing, and a passage links together this suction chamber and described crankshaft room, and with the way that is connected of the passage between control crankshaft room and the suction chamber, a control valve can change the displacement volume of this compressor.Near cylinder, be furnished with sensor, be used for surveying the position of the upper dead center of compression volume inner carrier.
Other purpose of the present invention, characteristic and others will be recognized from the description of described most preferred embodiment of the present invention with reference to the accompanying drawings.
In the accompanying drawing:
Fig. 1 is the drawing in side sectional elevation of the oblique tray type compressor that has the variable exhaust measuring mechanism of first embodiment of the invention, and the tilt angle of described swash plate is positioned at its maximum position;
Fig. 2 is the sectional drawing of the oblique tray type compressor that has the variable exhaust measuring mechanism of first embodiment of the invention, and the tilt angle of described swash plate is in its minimum position;
Fig. 3 is the fragmentary cross-sectional view of the oblique tray type compressor that has the variable exhaust measuring mechanism of second embodiment of the invention;
Fig. 4 is the fragmentary cross-sectional view of the oblique tray type compressor that has the variable exhaust measuring mechanism of third embodiment of the invention;
Fig. 5 is the plotted curve of the relation between stroke of piston and the piston upper dead center position.
Referring to Fig. 1, wobble plate compressor 1 comprises front end-plate 2, has the cylinder baffle 3 of cylinder block 31, valve plate 4 and cylinder head 5.Front end-plate 2 is installed on one of cylinder baffle 3 end by the fixing bolt (not shown), and transmission shaft 7 is equipped with radial bearing 8, so that rotatably mounted transmission shaft 7 by the axial bore 21 that heart place among the front end-plate 2 forms in this axial bore 21.Protrude ring part 22 from front end-plate 2, and encase transmission shaft 7, limit a closed cavity 23.Be provided with cylinder block 31 and crankshaft room 32 in the cylinder baffle 3.Form in the cylinder block 31 and have the separated cylinder 33 of many equal angles.
By pin 103 cam follower 101 is fixed on the transmission shaft 7, between the adjacent axial end of the internal surface of front end-plate 2 and cam follower 10, is furnished with needle roller thrust bearing 11.The shank 101 of cam follower 10 extends along the direction of cylinder block 31, and forms porose 102 on this shank 101.Be furnished with the cylindrical body 12 of edge of a wing part 121 and arrange, and, can be rotated to support on the transmission shaft 7 by being assemblied in the ring part 13 on this transmission shaft 7 slidably around transmission shaft 7.Be formed with second shank 122 on the outer surface of the edge of a wing of cylindrical body 12 part 121, this shank 122 is towards the shank 101 of cam follower 10.The elongated hole 123 that forms on shank 122 is alignd with hole 102, and the pin 14 that passes hole 102 can motion slidably in elongated hole 123.By radial needle bearing 16, annular balance 15 is installed on the outer surface of cylindrical body 12, needle roller thrust bearing 17 is disposed in the gap between edge of a wing part 121 and the wobble plate 15.By radial bearing 18, the other end of transmission shaft 7 is supported rotatably in the center hole of cylinder block 31.The sliding axle 151 of on the outer peripheral edge portion of balance 15, ining succession, this sliding axle 151 protrudes towards the bottom surface of cylinder baffle 3, and the one end is placed in the groove 321 slidably, rotates to stop balance 15.
One end of piston rod 19 is rotatably connected on the receiving surface 152 of balance 15, and its other end is pivotally connected on the piston 20 that is placed in slidably in the cylinder 33.
Be formed with a suction port (not shown) and a floss hole 42 in valve plate 4, the inhalation reed valve (not shown) is positioned on the valve plate 4, and the discharge reed valve (not shown) is positioned on the valve plate 4, and is relative with inhalation reed valve.By liner (not shown) and valve plate 4, cylinder head 5 is connected on the cylinder baffle 3.Partition 51 extends from the inner surface axial of cylinder head 5, and the inside of this cylinder head 5 is divided into suction chamber 52 and discharge chamber 53.Flow of liquid inlet 60 by forming in cylinder head 5 makes suction chamber 52 be connected with the liquid loop of outside.By formed liquid flowing outlet 61 in cylinder head 5, discharge chamber 53 is connected in the liquid loop of outside again.
In cylinder block 31, in the formed cylindrical hole 62, be furnished with bellows 63.This hole 62 is communicated with suction chamber 52 by the hole 64 that penetrates valve plate 4, and is connected with crankcase 33 by the passage 65 that passes cylinder block 31.The needle-like piece 631 that hole 64 is disposed on bellows 63 1 ends is usually closed, and controls interchange between crankcase 32 and the suction chamber 52 according to the motion of bellows 63.
Short range position transducer 70 is a kind of non-contact type position detecting devices, has the ability of surveying about 1 millimeter scope.This short range position transducer 70 is installed on the valve plate 4 and, faces the upper surface of piston 20 by cylindrical shell on one side.
When work, by an external drive source (not shown) transmission shaft 7 is applied one and rotatablely move, and it is delivered on the cam follower 10.By cylindrical body 12, the rotational motion of this cam follower 10 is transformed into the nutation movement on the balance 15 again.Be connected on the balance 15, and the sliding axle 151 that is installed in the groove 321 can stop balance 15 rotations.By piston rod 19, the nutation movement of this balance 15 is changed into the to-and-fro motion of the piston 20 in the cylinder 33 again.Therefore, cause cooling liquid and be inhaled in the suction chamber 52, and flow into cylinder 33 by suction port 41 by inflow entrance 60.Refrigeration liquid is compressed in cylinder 33, and passes floss hole 42 and be exhausted in the discharge chamber 53.Then, compressed refrigeration liquid flows into the outside liquid loop by outflow opening 61.
When the tilt angle of edge of a wing part 121 is positioned at maximum position as shown in Figure 1, between the top surface of and piston 20 long-pending at the interior table of valve plate 4 is 0.3 millimeter apart from △ X, when the tilt angle of edge of a wing part 121 was positioned at minimum position as shown in Figure 2, this was 1.3 millimeters apart from △ X.
The variation of compressor air-discharging amount, i.e. relation between the upper dead center position of variation at the tilt angle of hang plate 121 and piston 20 is to determine according to the shape of formed elongated hole 123 in the shank 122.Therefore, even the output value of the adjusting the distance △ X after the detection of coming out from position transducer 70 is non-linear, still, still can obtain by the shape of suitable selection elongated hole 123 with output after the proportional detection of stroke of piston.
With reference to Fig. 3, it has represented the part of the structure of the described compressor of second embodiment of the invention.Surveying body 80 is a permanent magnet, and it is installed in the top end surface of piston 20, and hall-effect generator 81 is positioned on the valve plate 4 of cylindrical shell one side, in the face of surveying body 80.This hall-effect generator 81 can and be surveyed according to itself and produce output signal apart from △ X between the body 80.
With reference to Fig. 4, it has represented the part of the structure of the described compressor of third embodiment of the invention.Surveying body 90 is a permanent magnet, and it is installed on the side of piston 20, and hall-effect generator 81 is installed on the side of cylinder baffle 3.This hall-effect generator 81 can and be surveyed according to itself and send output signal apart from △ X between the body 80.
As shown in Figure 5, by in 0.3～1.3 millimeter scope, changing the position of piston upper dead center, and by the non contacting position sensor of its detectivity in about 1 millimeter scope, can direct detection to the air displacement of this compressor.
Although with reference to the accompanying drawings embodiments of the invention are described in detail, should be appreciated that the present invention should not only limit to those embodiments, those skilled in the art can make various variations and change under the situation of not leaving the scope of the invention.

Claims (4)

1, a kind of oblique tray type compressor that has the variable exhaust measuring mechanism, it comprises: a compression case machine, this housing encase a crankshaft room, and said housing contains a cylinder block;
In described cylinder block, be formed with many cylinders, to limit compression volume;
A plurality of pistons that match with each said cylinder slidably respectively;
One driving mechanism and a plurality of piston couplings of institute, so that described piston to-and-fro motion in this cylinder, said driving mechanism comprises that one is rotatably supported in transmission shaft and the coupling device in the described housing, described coupling device is to be used for being coupled rotationally described piston and described transmission shaft, and change rotatablely moving of described transmission shaft into described piston reciprocating, this coupling device comprises a swash plate, surface of this swash plate becomes a tilt angle with the plane perpendicular to described transmission shaft, said tilt angle changes according to the change of the pressure in the crankshaft room, the stroke of said piston is that the change according to described tilt angle changes, thereby in described compression volume, form a decrement, changing described cylinder of compressor displacement volume, the position of described piston upper dead center changes within the specific limits according to the variation of the described stroke of this piston;
One suction chamber and a discharge chamber are housed in described compressor housing;
Be installed near the sensing device of the upper dead center position that is used for surveying the piston in the described compression volume the described cylinder;
It is characterized in that,
A connection channel links together described crankshaft room and described suction chamber;
By controlling the control valve device that changes the displacement volume of compressor between described crankshaft room and the described suction chamber by the connection of above-mentioned passage; And
Described sensing device is installed on the surface of described valve plate, and is relative with described piston on the direction of described reciprocating motion of the pistons.
2, the compressor described in claim 1 is characterized in that, comprises further that also one is installed in piston face by the formed detection body of permanent magnet, and is relative with described sensing device.
3, compressor according to claim 1 is characterized in that, described sensing device is installed on the surface that limits described cylinder.
4, as compressor as described in the claim 3, it is characterized in that also further comprise one by the formed detection body of permanent magnet, it is installed on the outer periphery surface of described piston.
CN92103385A 1991-04-10 1992-04-10 Slant plate type combressor with varibk displacement mechanism Expired - Fee Related CN1029023C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP77938/91 1991-04-10
JP3077938A JPH04311685A (en) 1991-04-10 1991-04-10 Compressor

Publications (2)

Publication Number Publication Date
CN1067096A CN1067096A (en) 1992-12-16
CN1029023C true CN1029023C (en) 1995-06-21

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Application Number Title Priority Date Filing Date
CN92103385A Expired - Fee Related CN1029023C (en) 1991-04-10 1992-04-10 Slant plate type combressor with varibk displacement mechanism

Country Status (7)

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EP (1) EP0508823B1 (en)
JP (1) JPH04311685A (en)
KR (1) KR100216388B1 (en)
CN (1) CN1029023C (en)
AU (1) AU650960B2 (en)
CA (1) CA2065831C (en)
DE (1) DE69205480T2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100374719C (en) * 2002-03-21 2008-03-12 巴西压缩机股份有限公司 A position sensor and a linear compressor

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BR0001404A (en) * 2000-03-23 2001-11-13 Brasil Compressores Sa Position sensor and compressor
BR0203724B1 (en) * 2002-09-12 2011-08-09 fluid pump and fluid transfer plate and inductive sensor for fluid pump.
BR0301329B1 (en) * 2003-05-12 2011-09-06 Proximity sensor support, compressor, valve plate and cooler.
CN102364099A (en) * 2011-11-01 2012-02-29 无锡市苏立成汽车空调压缩机有限公司 Main shaft inclined plate structure for automobile air-condition compressor
DE102019112237A1 (en) * 2019-04-12 2020-10-15 OET GmbH Reciprocating compressor
CN111997887A (en) * 2020-09-01 2020-11-27 浙江三田汽车空调压缩机有限公司 Device for detecting main shaft displacement of variable displacement compressor

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FR2573136B1 (en) * 1984-11-15 1989-03-31 Schlumberger Cie Dowell METHOD FOR OBSERVING PUMPING CHARACTERISTICS ON A POSITIVE DISPLACEMENT PUMP AND PUMP FOR CARRYING OUT THIS METHOD.
JPS62218670A (en) * 1986-03-19 1987-09-26 Diesel Kiki Co Ltd Variable-capacity oscillating plate type compressor
US4822252A (en) * 1986-07-28 1989-04-18 Nippondenso Co., Ltd. Variable capacity compressor
FR2605059B1 (en) * 1986-10-08 1991-02-08 Schlumberger Cie Dowell FLOW MEASUREMENT AND MONITORING SYSTEM FOR POSITIVE DISPLACEMENT PUMPS AND PUMPS PROVIDED WITH SUCH SYSTEMS
JPS63205474A (en) * 1987-02-19 1988-08-24 Sanden Corp Swash plate type variable displacement compressor
JP2557254B2 (en) * 1988-05-16 1996-11-27 本田技研工業株式会社 Cooling fan controller
DE3824752A1 (en) * 1988-07-21 1990-01-25 Bosch Gmbh Robert Swash plate compressor
JP2715544B2 (en) * 1989-05-10 1998-02-18 株式会社豊田自動織機製作所 Capacity detection device for swash plate type variable displacement compressor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100374719C (en) * 2002-03-21 2008-03-12 巴西压缩机股份有限公司 A position sensor and a linear compressor

Also Published As

Publication number Publication date
CN1067096A (en) 1992-12-16
CA2065831C (en) 1997-12-09
AU650960B2 (en) 1994-07-07
KR100216388B1 (en) 1999-08-16
DE69205480D1 (en) 1995-11-23
EP0508823A1 (en) 1992-10-14
CA2065831A1 (en) 1992-10-11
AU1477792A (en) 1992-10-15
DE69205480T2 (en) 1996-04-18
JPH04311685A (en) 1992-11-04
EP0508823B1 (en) 1995-10-18
KR920020078A (en) 1992-11-20

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