EP1803935A2 - Dispositif de détection de déplacement pour un compresseur à capacité variable - Google Patents

Dispositif de détection de déplacement pour un compresseur à capacité variable Download PDF

Info

Publication number
EP1803935A2
EP1803935A2 EP06127051A EP06127051A EP1803935A2 EP 1803935 A2 EP1803935 A2 EP 1803935A2 EP 06127051 A EP06127051 A EP 06127051A EP 06127051 A EP06127051 A EP 06127051A EP 1803935 A2 EP1803935 A2 EP 1803935A2
Authority
EP
European Patent Office
Prior art keywords
swash plate
drive shaft
detection device
displacement
displacement detection
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.)
Withdrawn
Application number
EP06127051A
Other languages
German (de)
English (en)
Inventor
Masaki Ota
Masanori Sonobe
Atsuhiro Suzuki
Satoshi Umemura
Tomoji Tarutani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Industries Corp
Original Assignee
Toyota Industries Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyota Industries Corp filed Critical Toyota Industries Corp
Publication of EP1803935A2 publication Critical patent/EP1803935A2/fr
Withdrawn legal-status Critical Current

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
    • F04B27/14—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
    • 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
    • F04B2201/00—Pump parameters
    • F04B2201/12—Parameters of driving or driven means
    • F04B2201/1204—Position of a rotating inclined plate
    • F04B2201/12041—Angular position

Definitions

  • the present invention relates to a displacement detection device in a variable displacement compressor for use in a vehicle air-conditioner.
  • variable displacement compressor hereinafter referred to merely as “compressor” which is adapted for use in a vehicle air-conditioner and operable to control its displacement.
  • a compressor has a swash plate which is accommodated in a crank chamber and inclinable relative to a drive shaft of the compressor.
  • the swash plate As the pressure in the crank chamber is raised, the swash plate is inclined toward its vertical position with respect to the axis of the drive shaft (or the inclination angle of the swash plate is decreased).
  • the swash plate is inclined approaching the axis of the drive shaft or moving away from its vertical position (or the inclination angle of the swash plate is increased).
  • the compressor has a piston whose stroke length is changed according to the inclination of the swash plate.
  • the piston reciprocates for a short distance of stroke thereby to provide a small displacement of the compressor.
  • the piston reciprocates for a long distance of stroke thereby to provide a large displacement of the compressor.
  • Japanese Patent Application Publication No. 62-218670 discloses a wobble plate type compressor (cf. Pages 2-5 and FIG. 1 of the publication).
  • This compressor has a drive shaft rotatably supported in a crank chamber, a rotation support member mounted on the drive shaft and a wobble plate fitting member coupled to the rotation support member.
  • the wobble plate fitting member is mounted on the drive shaft through a hinge ball. As the drive shaft is rotated, the wobble plate fitting member is rotated while making a wobbling motion in the axial direction of the drive shaft.
  • a wobble plate is supported by the wobble plate fitting member through a bearing so that the wobble plate is rotatable relative to the wobble plate fitting member.
  • Pistons in cylinders which are formed around the drive shaft in a cylinder block are connected to the wobble plate through piston rods for reciprocating movement in the respective cylinders.
  • the rotation of the drive shaft is converted through the wobble plate fitting member into the reciprocating and wobbling motion of the wobble plate in the axial direction, thereby causing the piston to reciprocate in the cylinder for the compressor to perform suction and compression of refrigerant gas.
  • a pin or a magnet as an object to be detected projects from the outer periphery of the wobble plate at a predetermined location.
  • An electromagnetic induction type detector is disposed on the outer peripheral surface of the housing. The detector is located at a position where the pin moves past the detector as the wobble plate wobbles and at the center position of the wobbling motion path of the pin when the wobble plate is at its minimum inclination angle so that the detecting portion of the detector is located in facing relation to the pin.
  • the detector is operable to detect the change of magnetic flux each time the pin passes the detecting portion and to also generate pulse signal, accordingly.
  • the pulse signal is transmitted to a control unit which is connected to the detector.
  • the control unit determines the periods of time during which the pin is located on the left and right sides of the detecting portion of the detector, respectively. It has been known that the ratio of each determined period of time to the sum of both detected periods of time on the left and right sides, namely to one complete cycle of the wobbling motion, depends on the displacement of the compressor. By using this, the control unit calculates the inclination of the wobble plate and hence the displacement of the compressor.
  • a pulse signal is generated per one rotation of the drive shaft.
  • an object to be detected may be provided at an appropriate position on the outer periphery of the swash plate and one or more of detectors may be provided in the compressor housing. The position of the swash plate is sensed by detecting the magnitude of magnetic flux which varies according to the distance between the detector and the detection object.
  • the distance between the detection object and the detector varies not only in the axial direction but also in the radial direction from the axis of the drive shaft as the inclination angle of the swash plate is changed.
  • the detection output from the detector or the magnetic force of the detection object need be increased.
  • the above-described prior art compressor has a problem in that there is a need to correct the distance of the detection output according to the inclination angle of the swash plate.
  • the present invention which has been made in view of the above-described problems is directed to a variable displacement compressor which is capable of accurately detecting the angle of a swash plate.
  • An aspect in accordance with the present invention provides a displacement detection device for a variable displacement compressor in which a swash plate is connected to a piston through shoes in a housing, the swash plate slides relative to the shoes and rotates synchronously with a drive shaft with a wobbling motion in an axial direction of the drive shaft as the drive shaft is rotated, and an inclination angle of the swash plate is controlled thereby to change a stroke of the piston.
  • the displacement detection device includes a detection object which is provided in a first portion of an outer periphery of the swash plate where an imaginary plane passing through a point of intersection between a line connecting a top dead center position and a bottom dead center position of the swash plate and an axial line of the drive shaft in perpendicular relation to the line intersects with the outer periphery of the swash plate and a detector which is provided in the housing so as to face the detection object.
  • the compressor 10 has a housing 11 as an outer shell which includes a cylinder block 12 defining therein a plurality of cylinder bores 12a, a front housing 13 and a rear housing 14.
  • the front housing 13 is joined to the front end of the cylinder block 12 and the rear housing 14 is joined to the rear end of the cylinder block 12.
  • the front housing 13, the cylinder block 12 and the rear housing 14 are integrally fastened to each other by a plurality of bolts 15 (only one being shown in FIG. 1) inserted through the front housing 13, the cylinder block 12 and the rear housing 14.
  • the front housing 13 and the cylinder block 12 cooperate to define a crank chamber 16 through which a drive shaft 17 extends.
  • the drive shaft 17 is rotatably supported by a radial bearing 18 provided at the front of the front housing 13 and a radial bearing 19 provided at the center of the cylinder block 12.
  • a shaft seal mechanism 20 is provided on the drive shaft 17 at a position forward of the radial bearing 18 in slide contact with the outer circumferential surface of the drive shaft 17.
  • the drive shaft 17 is connected at its front end to an external drive source (not shown) through a power transmission mechanism (not shown).
  • a lug plate 21 is secured to the drive shaft 17 in the crank chamber 16 for rotation therewith.
  • a swash plate 22 as a part of the displacement-changing mechanism of the compressor is provided behind the lug plate 21 and supported by the drive shaft 17 so as to be slidable in the axial direction of the drive shaft 17 and also inclinable relative to the axis of the drive shaft 17.
  • a hinge mechanism 23 is interposed between the swash plate 22 and the lug plate 21 so that the swash plate 22 and the lug plate 21 are connected therethrough. The hinge mechanism 23 allows the swash plate 22 to rotate synchronously with and be inclined relative to the drive shaft 17 and the lug plate 21.
  • a coil spring 24 is disposed on the drive shaft 17 between the lug plate 21 and the swash plate 22.
  • a tubular body 25 is slidably disposed on the drive shaft 17 and urged rearward by the coil spring 24.
  • the tubular body 25 urges the swash plate 22 rearward or in the direction which causes the inclination angle of the swash plate 22 to be decreased.
  • the inclination angle of the swash plate 22 refers to an angle made between an imaginary plane perpendicular to the axis of the drive shaft 17 and a flat surface of the swash plate 22.
  • the swash plate 22 has a stop 22a projecting from the front thereof for determining the maximum inclination of the swash plate 22 by contact with the lug plate 21 as shown in FIG. 1.
  • a retaining ring 26 is fitted on the drive shaft 17 rearward of the swash plate 22 and a coil spring 27 is disposed on the drive shaft 17 between the retaining ring 26 and the swash plate 22.
  • the minimum inclination of the swash plate 22 is determined by the contact thereof with the front of the coil spring 27.
  • the swash plate 22 indicated by the solid line is positioned at its maximum inclination angle and the swash plate 22 indicated by the two-dotted line is inclined at its minimum inclination angle.
  • a magnet 35 as a detection object is provided in the outer periphery of the swash plate 22 and a magnetic sensor 36 as a detector is provided in the peripheral wall 12b of the cylinder block 12 which faces the magnet 35.
  • a single-headed piston 28 is reciprocatably disposed in each of the cylinder bores 12a of the cylinder block 12 (five cylinder bores in this preferred embodiment).
  • the piston 28 is engaged at its neck with the outer periphery of the swash plate 22 through a pair of shoes 29 in a manner well known in the art.
  • the swash plate 22 has a sliding portion which is slidable relative to the shoes 29 and rotatable synchronously with the drive shaft 17. As the drive shaft 17 is rotated, the swash plate 22 is rotated therewith while making a wobbling motion in the axial direction of the drive shaft 17, thereby causing the pistons 28 to reciprocate through the shoes 29 in the longitudinal direction of the compressor 10.
  • a valve plate 31 is interposed between the rear housing 14 and the cylinder block 12.
  • the rear housing 14 defines therein at the center a suction chamber 32 and at the radially outer region a discharge chamber 33, respectively.
  • the suction chamber 32 and the discharge chamber 33 are in communication with a compression chamber 30 in each cylinder bore 12a through a suction port 31a and a discharge port 31b formed in the valve plate 31, respectively.
  • refrigerant gas in the suction chamber 32 is drawn into the compression chamber 30 through the suction port 31a.
  • the refrigerant gas which has been drawn in the compression chamber 30 is then compressed to a predetermined pressure and discharged into the discharge chamber 33 through the discharge port 31b.
  • the compressor 10 has a displacement control valve 34 which is disposed in the rear housing 14 for changing the inclination angle of the swash plate 22 thereby to adjust the stroke of the pistons 28 or the displacement of the compressor 10.
  • the displacement control valve 34 is arranged in a supply passage (not shown) which connects the discharge chamber 33 to the crank chamber 16.
  • the pressure in the crank chamber 16 depends on the balance between the amount of high-pressure refrigerant gas introduced from the discharge chamber 33 into the crank chamber 16 through the supply passage and the amount of refrigerant gas flowing from the crank chamber 16 into the suction chamber 32 through a bleed passage (not shown) which connects the crank chamber 16 to the suction chamber 32, which balance is adjusted by changing the opening of the displacement control valve 34.
  • the pressure difference between the pressure in the crank chamber 16 and the pressure in the compression chamber 30 through the piston 28 is varied thereby to change the inclination angle of the swash plate 22.
  • the swash plate 22 has a round hole 22b which is formed at a portion R of the outer periphery thereof where an imaginary plane passing through the point of intersection O between the line connecting the top dead center position P and the bottom dead center position Q of the swash plate 22 and the axial line m of the drive shaft 17 in perpendicular relation to the line between P and Q intersects with the outer periphery of the swash plate 22.
  • the round hole 22b is recessed from the outer peripheral surface 22c of the swash plate 22 toward the axial line m of the drive shaft 17.
  • the magnet 35 or a permanent magnet is disposed in the round hole 22b.
  • the cylinder block 12 has a plurality of through holes 12c which are formed in the peripheral wall 12b thereof between the piston 28 and the bolt 15 and arranged in parallel relation to the axial line m of the drive shaft 17 at position where the through holes 12 may face the magnet 35 in the swash plate 22.
  • a plurality of magnetic sensors 36 (five magnetic sensors 36a, 36b, 36c, 36d and 36e in this preferred embodiment) are disposed in the through holes 12c, respectively. Hall elements are used as the magnetic sensors 36 for detecting the position of the swash plate 22.
  • the maximum and minimum inclination angle positions of the swash plate 22 are indicated by the solid line and the chain double-dashed line, respectively.
  • the swash plate 22 is inclinable between the minimum and the maximum inclination angles.
  • the outer peripheral portion R of the swash plate 22, in which the magnet 35 is disposed is displaced parallel to the axial line m of the drive shaft 17.
  • positions on the outer peripheral portion R of the swash plate 22 at its minimum and maximum inclination angles are defined as spot R0 and spot R1, respectively.
  • a distance ⁇ g of displacement of the outer peripheral portion R of the swash plate 22 from the spot R0 is directly proportional to the inclination angle of the swash plate 22.
  • the distances between the spots R0 and R1 and the peripheral wall 12b in the radial direction from the axial line m of the drive shaft 17 toward the peripheral wall 12b are referred to as distances h and i, respectively. These distances h and i are substantially the same. In other words, the spaced distance between the outer peripheral portion R of the swash plate 22 and the peripheral wall 12b in the radial direction remains substantially constant when the inclination angle of the swash plate 22 is changed.
  • the spaced distance between any other point on the periphery of the swash plate 22, e.g. the top dead center position P, and the peripheral wall 12b of the cylinder block 12 in the radial direction varies with the inclination of the swash plate 22 between the minimum and maximum inclination angles as indicated by symbols k and j in FIG. 3, wherein the distance j is smaller than the distance k. Therefore, the distance between the magnet 35 provided in the outer peripheral portion R of the swash plate 22 and the peripheral wall 12b in the radial direction remains substantially constant when the swash plate 22 is rotated while changing its inclination angle. The magnet 35 is rotated while being displaced for the displacement distance ⁇ g in the axial direction from the spot R0 of the outer peripheral portion R of the swash plate 22 at its minimum inclination angle.
  • the magnetic sensors 36 are provided in the peripheral wall 12b of the cylinder block 12. As shown in FIG. 4, the five magnetic sensors 36a through 36e having the same specifications are provided in a line in the range between the minimum and maximum inclination angle positions of the swash plate 22.
  • the magnetic sensor 36a is located at a position where it faces the magnet 35 when the swash plate 22 is inclined at the minimum inclination angle.
  • the magnetic sensor 36e is located at a position where it faces the magnet 35 when the swash plate 22 is inclined at the maximum inclination angle.
  • the other magnetic sensors 36b through 36d are located at positions corresponding to the positions of the magnet 35 at intermediate inclination angles of the swash plate 22.
  • the magnetic sensors 36a through 36e are operable to sense magnetic flux density and send an electrical signal indicative of the sensed flux density to a control unit (not shown) which is connected to the magnetic sensor 36.
  • the control unit determines the position of the magnet 35 and hence the current position of the swash plate 22 according to the magnitude of the magnetic flux density sensed by each magnetic sensor 36.
  • the control unit stores therein data about the displacement distance ⁇ g of the swash plate 22 corresponding to each of the magnetic sensors 36a through 36e and also data of the relation between the displacement distance ⁇ g and the inclination angle of the swash plate 22.
  • the control unit is operable to perform arithmetic processing based on a certain program to calculate the inclination angle of the swash plate 22, thereby determining the displacement of the compressor 10.
  • the swash plate 22 As the drive shaft 17 is rotated, the swash plate 22 is rotated with a wobbling motion. Accordingly, the piston 28 reciprocates in the cylinder bore 12, thus the compressor 10 performing suction, compression and discharge of the refrigerant gas.
  • the inclination angle of the swash plate 22 is adjusted by the displacement control valve 34 which controls the pressure difference between the pressure in the crank chamber 16 and the pressure in the compression chamber 30 through the piston 28.
  • the magnet 35 is located, for example, at spot R2 where the outer peripheral portion R of the swash plate 22 has been displaced for a displacement distance ⁇ g2 from the spot R0 as shown in FIG. 4, the magnetic sensors 36a through 36e sense the magnetic flux density at each location thereof and send the detection signals to the control unit.
  • the magnet 35 is located closest to the magnetic sensor 36c in facing relation thereto.
  • the magnetic flux density sensed by the magnetic sensor 36c is the greatest and, therefore, the control unit determines that the swash plate 22 is located at the spot R2 corresponding to the position of the magnetic sensor 36c.
  • the control unit performs the arithmetic processing based on the program according to the detection signal thereby to calculate the inclination angle of the swash plate 22.
  • variable displacement compressor according to a second preferred embodiment of the present invention with reference to FIGs. 5 and 6.
  • the second preferred embodiment differs from the first preferred embodiment in that only one magnetic sensor is provided in the compressor 10.
  • the other structure of this compressor is substantially the same as that of the first preferred embodiment.
  • common or similar elements or parts are designated by the same reference numerals as those of the first preferred embodiment and, therefore, the description thereof is omitted and only the modifications will be described.
  • a magnetic sensor 40 is provided in the peripheral wall 12b of the cylinder block 12 at a position where the magnetic sensor 40 faces to the magnet 35 when the swash plate 22 is inclined at the minimum inclination angle.
  • the magnetic sensor 40 detects magnetic flux density of the magnet 35 and send an electrical signal representative of the sensed flux density to the control unit.
  • the magnetic sensor 40 detects the position of the swash plate 22 (or the displacement distance ⁇ g in the axial direction from the base point) according to magnitude of the sensed magnetic flux density.
  • the control unit stores therein data of the relation between the detection output (or the magnitude of magnetic flux density) of the magnetic sensor 40 and the displacement distance ⁇ g of the swash plate 22 and also data of the relation between the displacement distance ⁇ g and the inclination angle of the swash plate 22.
  • the control unit performs arithmetic processing based on a certain program to calculate the displacement distance ⁇ g of the swash plate 22 and the inclination angle of the swash plate 22, thus obtaining information concerning the displacement of the compressor 10.
  • the same advantageous effects as mentioned in the paragraphs (1), (2), (5) and (6) for the first preferred embodiment are obtained.
  • the second embodiment offers additional advantages as follows.
  • the magnetic sensor 40 is provided so as to face the magnet 35 when the swash plate 22 is positioned at the minimum inclination angle.
  • the magnetic flux density of the displaced magnet 35 is detected by one magnetic sensor 40 for calculation by the control unit of the displacement distance ⁇ g from the base point of the swash plate 22 and the inclination angle of the swash plate 22.
  • the magnet 35 is provided in the outer peripheral portion R of the swash plate 22 where the imaginary plane passing through the point of intersection O between the line connecting the top dead center position P and the bottom dead center position Q of the swash plate 22 and the axial line m of the drive shaft 17 in perpendicular relation to the line between P and Q intersects with the outer periphery of the swash plate 22.
  • the magnet may be provided at a portion S of the outer periphery of the swash plate 22 that is opposite to the outer peripheral portion R, as shown in FIG. 2.
  • the magnetic sensor may be provided in facing relation to the magnet.
  • another magnet 37 may be provided at the outer peripheral portion S of the swash plate 22 as shown in FIG. 7. In this case, reliability of detection is enhanced.
  • the object to be detected and the detector are provided by the magnet and the magnetic sensor in the first and second preferred embodiments.
  • any magnetic material may be used as the detection object instead of the magnet.
  • Any other types of magnetic sensors such as magneto-inductive sensor, magneto-resistive (MR) sensor, magneto-impedance (MI) sensor and the like other than the Hall element may be used.
  • the detection object and the detector are not limited to the magnet and the magnetic sensor, respectively. Alternatively, they may be of various types such as ultrasound type, optical type and the like.
  • the magnetic sensor 36 is provided in the peripheral wall 12a of the cylinder block 12 in the first and second preferred embodiments.
  • a magnetic sensor 41 may be connected to the bolt 15 which is provided adjacent to the peripheral wall 12a of the cylinder block 12 for joining the housing members (the front housing 13, the cylinder block 12 and the rear housing 14) as shown in FIG. 8.
  • any other fitting member may be provided and the magnetic sensor may be fixed thereto.
  • a fitting member 42 may be provided to the cylinder block 12 and a magnetic sensor 43 may be fixed to the fitting member 42 as shown in FIG. 9.
  • a displacement detection device for a variable displacement compressor in which a swash plate which is connected to a piston through shoes in a housing slides relative to the shoes and rotates synchronously with a drive shaft with a wobbling motion in an axial direction of the drive shaft as the drive shaft is rotated, and an inclination angle of the swash plate is controlled thereby changing a stroke of the piston, includes a detection object provided in a first portion of an outer periphery of the swash plate where an imaginary plane passing through a point of intersection between a line connecting top and bottom dead center positions of the swash plate and an axial line of the drive shaft in perpendicular relation to the line intersects with the outer periphery of the swash plate and a detector provided in the housing so as to face the detection object.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
EP06127051A 2005-12-27 2006-12-22 Dispositif de détection de déplacement pour un compresseur à capacité variable Withdrawn EP1803935A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005375006A JP2007177650A (ja) 2005-12-27 2005-12-27 可変容量型圧縮機の容量検出装置

Publications (1)

Publication Number Publication Date
EP1803935A2 true EP1803935A2 (fr) 2007-07-04

Family

ID=37890562

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06127051A Withdrawn EP1803935A2 (fr) 2005-12-27 2006-12-22 Dispositif de détection de déplacement pour un compresseur à capacité variable

Country Status (3)

Country Link
US (1) US20070177987A1 (fr)
EP (1) EP1803935A2 (fr)
JP (1) JP2007177650A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMO20100215A1 (it) * 2010-07-26 2012-01-27 Sam Hydraulik Spa Macchina a pistoni assiali
CN104854422A (zh) * 2012-12-13 2015-08-19 卡特彼勒公司 用于斜盘角度位置检测的介电传感器布置结构和方法
WO2017121545A1 (fr) * 2016-01-12 2017-07-20 Danfoss Power Solutions Gmbh & Co Ohg Capteur d'angle de plateau oscillant

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5414115B2 (ja) * 2010-01-21 2014-02-12 サンデン株式会社 可変容量型圧縮機の容量検出装置およびそれを備えた可変容量型圧縮機

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMO20100215A1 (it) * 2010-07-26 2012-01-27 Sam Hydraulik Spa Macchina a pistoni assiali
WO2012014128A1 (fr) * 2010-07-26 2012-02-02 Sam Hydraulik - S.P.A. Machine à piston axial
CN104854422A (zh) * 2012-12-13 2015-08-19 卡特彼勒公司 用于斜盘角度位置检测的介电传感器布置结构和方法
WO2017121545A1 (fr) * 2016-01-12 2017-07-20 Danfoss Power Solutions Gmbh & Co Ohg Capteur d'angle de plateau oscillant
US10801492B2 (en) 2016-01-12 2020-10-13 Danfoss Power Solutions G.m.b.H. & Co. OHG Swash plate angle sensor

Also Published As

Publication number Publication date
US20070177987A1 (en) 2007-08-02
JP2007177650A (ja) 2007-07-12

Similar Documents

Publication Publication Date Title
US5046927A (en) Wobble plate type variable capacity compressor with a capacity detector
EP1803935A2 (fr) Dispositif de détection de déplacement pour un compresseur à capacité variable
US5407328A (en) Displacement detector of variable displacement type compressor
KR100834335B1 (ko) 가변 용량형 압축기
EP1691074B1 (fr) Compresseur
JP2532471Y2 (ja) 揺動斜板式圧縮機における回転検出機構
US6589019B2 (en) Variable displacement compressor
KR101766509B1 (ko) 가변 용량형 사판식 압축기
CN1029023C (zh) 有可变排气量机构的斜盘式压缩机
JP2007177757A (ja) 可変容量型回転斜板式圧縮機の容量検出装置
EP1895163B1 (fr) Structure pour détecter le débit de réfrigérant dans un compresseur
JP2007211704A (ja) 可変容量型斜板式圧縮機の容量検出装置
KR101886725B1 (ko) 가변 용량형 사판식 압축기
KR101882672B1 (ko) 가변 용량형 사판식 압축기
CN111622919B (zh) 压缩器
KR101984509B1 (ko) 압축기의 냉매 토출유량 계측장치
KR101877260B1 (ko) 가변 용량형 사판식 압축기
JP2812095B2 (ja) 揺動斜板式圧縮機における回転検出機構
JPH02233884A (ja) 可変容量型圧縮機における容量検出機構
KR101535322B1 (ko) 가변 용량형 사판식 압축기
JP2003148355A (ja) 可変容量圧縮機
JP2529197Y2 (ja) 斜板式可変容量圧縮機
JPH02173364A (ja) 可変容量型揺動斜板式圧縮機における容量検出方法
JP2007332931A (ja) 可変容量型圧縮機
JPH04123380U (ja) 可変容量型斜板式圧縮機の容量検出装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20061222

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20090701