WO2012167611A1 - Dispositif volumétrique à volute avec butée bidirectionnelle - Google Patents

Dispositif volumétrique à volute avec butée bidirectionnelle Download PDF

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Publication number
WO2012167611A1
WO2012167611A1 PCT/CN2012/000773 CN2012000773W WO2012167611A1 WO 2012167611 A1 WO2012167611 A1 WO 2012167611A1 CN 2012000773 W CN2012000773 W CN 2012000773W WO 2012167611 A1 WO2012167611 A1 WO 2012167611A1
Authority
WO
WIPO (PCT)
Prior art keywords
thrust bearing
scroll
bearing
fixed
orbiting
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.)
Ceased
Application number
PCT/CN2012/000773
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English (en)
Chinese (zh)
Inventor
倪诗茂
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.)
Advanced Scroll Technologies HangZhou Inc
Original Assignee
Advanced Scroll Technologies HangZhou Inc
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 Advanced Scroll Technologies HangZhou Inc filed Critical Advanced Scroll Technologies HangZhou Inc
Publication of WO2012167611A1 publication Critical patent/WO2012167611A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/005—Axial sealings for working fluid

Definitions

  • Description of the invention relates to a scroll type volume displacement device with a bidirectional thrust bearing
  • the present invention relates to a scroll volume displacement device, and more particularly to a scroll volume displacement device having a two-way thrust bearing structure. Background technique
  • Scrolls are components that extend a cylindrical section with a spiral profile on one end plate, usually one fixed, called a fixed scroll, and A scroll has a helical cylinder conjugated to the helical cylinder of the fixed scroll and is circularly translated relative to the fixed scroll, and is called a moving scroll.
  • the mutually conjugated spiral scroll faces of the two scrolls mesh with each other to form a line contact.
  • At least one sealed air chamber is formed between the pair of line contacts and the surface of the end plate.
  • FIG. 1 is a view of Fig. 9 of the Chinese patent entitled “Improved scroll-type positive displacement compressor with full-floating floating scroll", which is entitled to the inventor's patent number ZL200610121150.
  • the movement of the orbiting scroll is realized by a piston sealing structure, as shown in FIG. 1, comprising a main housing 20, a base housing 70, a rotating drive shaft 40, a fixed scroll 50 and an orbiting scroll 60;
  • the orbiting wrap 60 has a second end plate 61.
  • the fixed wrap 50 has a first end plate 51.
  • the base casing 70 is connected to the main casing 20.
  • the main casing 20 is provided with a fixed wrap 50 and an orbiting
  • the scroll 60, the base casing 70 and the rear end of the second end plate 61 of the orbiting scroll 60 are formed with a pressure plenum 83, and a sealing mechanism is disposed at the rear end of the base casing 70 and the second end plate 61 for The sealing pressure chamber 83;
  • the sealing mechanism includes an orbiting movable piston 68, a sealing ring 71 and a spring 72, and the movable piston 68 is urged by the spring 72 so that it can axially contact the sealing surface 73 of the base casing 70.
  • the hermetic contact of the sealing mechanism is to provide one or more sealing means such as a sealing ring and a piston on the orbiting scroll.
  • this method is only applicable to the conventional compressor, that is, the compressed gas in the compressed air chamber between the orbiting scroll and the fixed scroll always tends to wrap the orbiting scroll in the axial direction and the fixed scroll from start to stop. Separation.
  • the spring force of the gas pressure in the sealed pressure chamber is greater than the separation force, maintaining a controlled contact between the orbiting scroll and the fixed scroll.
  • the sealed expander may have different conditions.
  • the suction end is at atmospheric pressure
  • the exhaust end is also at atmospheric pressure
  • the pressure of the compressed air chamber between the orbiting scroll and the fixed scroll is higher than atmospheric pressure.
  • the orbiting scroll is axially received. Separation force.
  • the suction end pressure is gradually lowered.
  • the pressure of the compressed air chamber between the fixed scroll and the orbiting scroll is lower than atmospheric pressure.
  • the atmospheric pressure plus the spring pressure causes the winding between the orbiting scroll and the fixed scroll.
  • the contact force is too large.
  • a scroll type displacement device with a wraparound thrust bearing comprising a main casing, a base casing, a rotating drive shaft, a fixed scroll and an orbiting scroll;
  • a lower thrust bearing there is a lower thrust bearing, a fixed bearing and an upper thrust bearing between the second end plate of the orbiting scroll and the base casing, and the lower thrust bearing forms a pressure chamber with the second end plate
  • the upper thrust bearing is coupled to the lower thrust bearing
  • the fixed bearing is disposed on a bearing housing of the base housing
  • the lower thrust bearing and the upper thrust bearing are similar to the orbiting scroll The orbiting movement.
  • a pressure chamber is disposed between the rear end of the orbiting scroll and the upper thrust bearing, and after the pressure chamber introduces a pressure fluid, the orbiting scroll is pushed toward the fixed scroll .
  • the upper thrust bearing and the lower thrust bearing are respectively adjacent to both end faces of the fixed bearing, and are fixed together, and the upper thrust bearing and the lower thrust bearing are driven by the fixed bearing
  • the orbiting motion is made and the movement relative to the rotary drive shaft is made in the axial direction.
  • the upper thrust bearing has a disc shape with a through hole therebetween, and the upper thrust bearing is uniformly distributed with three stepped holes and three threaded holes.
  • the fixed bearing has a disc shape with a through hole therebetween, a stepped hole is concentrically disposed on a periphery of the through hole, and three countersunk screw holes and three holes are uniformly arranged around the fixed bearing. .
  • the lower thrust bearing has a disc shape with a through hole therebetween, and the lower thrust bearing is provided with three countersunk screw holes and three holes.
  • the invention provides a scroll type volume displacement device with a bidirectional thrust bearing, which is provided with a double thrust bearing capable of orbiting along an orbiting wrap between the orbiting wrap and the base casing, and through the orbiting vortex
  • a bidirectional thrust bearing capable of orbiting along an orbiting wrap between the orbiting wrap and the base casing, and through the orbiting vortex
  • the sealing contact between the coil and the thrust ball bearing seals the pressure chamber against the axial deflection force of the orbiting scroll; and is used to balance the possible sloshing in the orbiting motion of the orbiting scroll.
  • Figure 1 is a longitudinal sectional view of a conventional scroll compressor having a single scroll one-way thrust bearing structure
  • Figure 2 is a longitudinal sectional view of a scroll type displacement device with a two-way thrust bearing
  • Figure 3 is a schematic view of a rotary drive shaft of a scroll type displacement device with a two-way thrust bearing
  • Figure 4 is a cross-sectional view showing a bidirectional thrust bearing mechanism of a scroll type displacement device with a two-way thrust bearing according to the present invention
  • Figure 4A is a schematic view of the upper thrust bearing of the double-way thrust bearing mechanism of Figure 4.
  • Figure 4B is a schematic view of the fixed thrust bearing of the double-way thrust bearing mechanism of Figure 4.
  • Figure 4C is a schematic view of the lower thrust bearing of the double direction thrust bearing mechanism of Figure 4. detailed description
  • FIG. 2 is a longitudinal sectional view of a scroll type volume displacement device with a bidirectional thrust bearing
  • FIG. 3 is a schematic view of a rotary drive shaft of a scroll type volume displacement device with a bidirectional thrust bearing, see FIG.
  • a scroll type displacement device with a bidirectional thrust bearing includes a main housing 20, a base housing 70, a rotary drive shaft 40, a fixed scroll 50 and an orbiting scroll. 60.
  • the fixed scroll 50 has a first end plate 51, and a scroll element 52 is fixed on the first end plate 51, and the scroll element 52 is fixed thereon and thereby extends outward;
  • the orbiting scroll 60 has a second The end plate 61, the second end plate 61 is fixedly provided with a scroll element 62, and the scroll element 62 is fixed thereon and thereby extends outward;
  • the first end plate 51 provided with the scroll element 52 and the scroll element are provided
  • the second end plates 61 of 62 are adjacent to each other such that the scroll element 52 and the scroll element 62 are in mesh with each other, and the scroll element 52 and the scroll element 62 are respectively abutted against the second end plate 61 and the first end plate 51.
  • the fixed scroll 50 and the orbiting scroll 60 are respectively disposed in the main casing 20, and the fixed scroll 50 is supported by the main casing 20, and the rear end of the fixed scroll 50 is fitted in the main casing 20, the base machine
  • the casing 70 is coupled to the main casing 20, and the base casing 70 faces the rear end of the orbiting wrap 60.
  • a rotary drive shaft 40 includes a central shaft 41, a crankpin 42 and a crankpin 44.
  • the crankpin 42 and the crankpin 44 are respectively disposed at one end of the central shaft 41, and the central shaft 41 extends through the intermediate portion of the base casing 70, and With the crank pin 42-end close to the rear end of the orbiting wrap 60, the crank pin 42 can drive the orbiting wrap 60 to a circular translation relative to the fixed wrap 50 through the crank pin bearing 260 of the central drive joint 64 (ie, The front and rear portions of the central shaft 41 are respectively supported by a bearing 33 and a bearing 34, and the bearing 33 and the bearing 34 are respectively disposed on the base casing 70 and supported by the base casing 70 such that the central shaft 41 is rotatably It is disposed in the base casing 70 while simultaneously positioning the center shaft 41 through the bearing 33 and the bearing 34.
  • the motor 35 is also a motor 35 between the bearing 33 and the bearing 34.
  • the motor 35 is located in the base casing 70 and supported by the base casing 70.
  • the central shaft 41 penetrates the motor 35 to drive the motor 35.
  • the lower central shaft 41 is rotatable about the axis S1-S1.
  • a bearing seat 63 is formed in a central portion of the second end plate 61.
  • a crank pin bearing 260 is mounted in the bearing housing 63.
  • the crank pin 42 is coupled to the crank pin bearing 260 via a central drive joint 64, and the crank pin 44 is driven by the drive bearing 65.
  • the orbiting bearings 261 are coupled such that the central shaft 41 is coupled to the crank pin bearing 260 and the orbiting bearing 261, respectively.
  • the motor 35 drives the central shaft 41 to rotate, drives the central drive joint 64 and the drive bearing 65, and drives the crank pin bearing 260 and the orbiting bearing 261.
  • the crank pin bearing 260 drives the bearing housing 63 to move due to the bearing housing 63 and the orbiting scroll 60.
  • the fixed connection enables the orbiting scroll 60 to be orbited relative to the fixed scroll 50 in accordance with the movement of the bearing housing 63.
  • An axial bore 43 is provided at one end of the central shaft 41 adjacent the crankpin bearing 260.
  • the axial bore 43 is located adjacent the centerline S2-S2 of the crankpin 42 for axially or partially balancing the crankpin 42 and the crankpin. 44 The centrifugal force generated when the central shaft 41 rotates about the axis S1-S1.
  • the upper air inlet 80 enters the intake passage 81.
  • a central air chamber 82 is disposed in a middle portion between the orbiting scroll 60 and the fixed scroll 50, and a pressure air chamber 83 is disposed between the rear end surface of the orbiting scroll 60 and the upper thrust bearing 72, and is located at the fixed scroll 50 and
  • the pressure in the pressure plenum between the orbiting scrolls 60 can communicate with the pressure plenum 83 through the passages; the working fluid entering the suction passages 81 is drawn into the pressure formed between the fixed scrolls 50 and the orbiting scrolls 60.
  • the air chamber is compressed in the orbiting motion of the orbiting scroll 60, then transmitted to the central air chamber 82, and finally discharged outward through the exhaust port 84 at the central portion of the first end plate 51 of the fixed scroll 50.
  • the mechanism (CSPS structure) having a centrally driven crankshaft-sliding joint and a peripheral crankpin-swinging connection mechanism in the present invention provides the axial and radial compliance motion of the orbiting scroll.
  • the inventor's patent number is ZL200610121150. 3 is entitled “Improved scroll-type positive displacement compressor with full-floating floating scroll” Chinese patent. I will not repeat them here.
  • FIG. 4 is a cross-sectional view of a bidirectional thrust bearing mechanism of a scroll type volume displacement device with a bidirectional thrust bearing according to the present invention
  • FIG. 4A is a schematic view of the upper thrust bearing of the bidirectional thrust bearing mechanism of FIG. 4
  • FIG. 4B is a view of FIG. Schematic diagram of a fixed thrust bearing of a two-way thrust bearing mechanism
  • FIG. 4C is a schematic view of a lower thrust bearing of the two-way thrust bearing mechanism of FIG. 4, see FIG. 2, FIG. 4, FIG. 4A, FIG. 4B and FIG. It is shown that there is a lower thrust bearing 74, a fixed bearing 73 and an upper thrust bearing 72 between the second end plate 61 of the orbiting scroll 60 and the base casing 70.
  • the upper thrust bearing 72 and the lower thrust bearing 74 are driven by the drive bearing 65 and the orbiting bearing 261 to make a similar wrap around the orbiting wrap 60.
  • the upper thrust bearing 72 is specifically a disc shape, and the upper thrust bearing 72 has a through hole 72a in the middle thereof, and the upper thrust bearing 72 is provided with three stepped holes 72b and three screw holes 72c.
  • the fixed bearing 73 is specifically a disc shape, and has a through hole 73a in the middle of the fixed bearing 73, a stepped hole 73b concentrically disposed on the periphery of the through hole 73a, and three countersunk screw holes 73c and three are uniformly arranged around the fixed bearing 73.
  • the holes 73d; the three countersunk screws 77 respectively fix the fixed bearing 73 to the base casing 70 through the three holes 73c.
  • the lower thrust bearing 74 is specifically a disc shape having a through hole 74a in the middle of the lower thrust bearing 74, and the lower thrust bearing 74 is provided with three countersunk screw holes 74b and three holes 74c.
  • the upper thrust bearing 72, the fixed bearing 73 and the lower thrust bearing 74 are arranged in order.
  • the three spacers 75 separate the upper thrust bearing 72 and the lower thrust bearing 74 from the thickness of the fixed bearing 73; the three countersunk screws 76 secure the upper thrust bearing 72 and the lower thrust bearing 74 together.
  • the upper thrust bearing 72 and the lower thrust bearing 74 are also fixed to the orbiting bearing 261, and the inner diameter of the orbiting bearing 261 is in sliding engagement with the drive bearing 65.
  • the difference between the diameter of the spacer 75 and the diameter of the hole 73d of the fixed bearing 73 is equal to twice the radius of the orbiting wrap 60, that is, the orbiting diameter, while the axis line S1-S1 of the crank pin 42 and the crank pin
  • the distance of the axis S2-S2 of 44 is also equivalent to the orbiting radius of the orbiting scroll 60.
  • sealing member 90 and a sealing member 93 on the second end plate 61, and the sealing member 90 and the sealing member 93 may employ, for example, a lip seal or a 0-ring or the like between the upper thrust bearing 72 and the second end plate 61.
  • pressure plenum 83 through which the pressure plenum 83 is sealed from the surrounding area by a sealing element 90 and a sealing element 93.
  • the gas pressure in the pressure plenum 83 is higher than the atmospheric pressure, and a backward force (i.e., motor direction) axial force is applied to the orbiting scroll 60.
  • the size of the sealing member 90 and the sealing member 93 is selected to define the area of the pressure plenum 83, and the pressure gas introduced from the compressed plenum of the scroll acts on the rear end of the second end plate 61 of the orbiting scroll 60 plus
  • the elastic preload force applied by the sealing member 90 and the sealing member 93 exceeds the axial separation force applied by the compressed gas at the front end of the orbiting wrap 60, which axially urges the orbiting wrap 60 axially toward
  • the scroll 50 is fixed to obtain a slight contact of the two engagement scrolls, thereby also maintaining a good radial seal between the pressure chambers.
  • the mechanism (CSPS structure) having a center-driven crankshaft-sliding joint and a peripheral crankpin-swinging joint mechanism in the present invention also causes the orbiting scroll element 62 to radially maintain contact with the fixed scroll element 52, Maintain a tangential seal of the compressed air chamber.
  • the upper thrust bearing 72 moves in the direction of the rear portion, that is, the motor, and is in sliding contact with the fixed bearing 73, and the latter receives the axial thrust.
  • the suction end pressure gradually decreases, the gas pressure in the pressure chamber is lower than atmospheric pressure, and the subatmospheric pressure gas introduced from the compressed air chamber of the scroll acts on the second end of the orbiting scroll 60.
  • the force at the rear end of the plate 61 plus the elastic preload applied by the sealing member 90 and the sealing member 93 plus the combined force of the atmospheric pressure applied to all of the outer surfaces of the non-closed plenum of the orbiting scroll 60 will The orbiting scroll 60 is axially urged toward the fixed scroll 50 to obtain a slight contact of the two engaging scrolls.
  • the present invention provides an orbiting thrust bearing with a force that can withstand bidirectional axial forces.
  • the thrust bearing may be a plain bearing, a rolling bearing, or a mixture of the two.
  • the two-way thrust bearing enables the movable scroll to maintain the axial floating of the disturbing scroll and the axial direction of the fixed scroll when the axial force is greatly changed during the compression process or during the startup to the running process. Sealed contact.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

La présente invention concerne un dispositif volumétrique à volute doté d'une butée bidirectionnelle. Ledit dispositif comprend un carter principal (20), un carter d'embase (70), un arbre d'entraînement en rotation (40), une volute fixe (50) et une volute à mouvement orbital (60). Entre une seconde plaque terminale (61) de la volute à mouvement orbital (60) et le carter d'embase (70) se trouvent une butée inférieure (74), une butée fixe (74) et une butée supérieure (72), ladite butée inférieure (74) et ledit carter d'embase (70) formant une chambre à gaz sous pression. La butée supérieure (72) est reliée à la butée inférieure (74), et la butée fixe (73) est disposée sur un siège de butée du carter d'embase (70). La butée supérieure (72) et la butée inférieure (74) effectuent un mouvement orbital similaire à celui de la volute à mouvement orbital (60). La butée bidirectionnelle dudit dispositif volumétrique à volute permet à la volute à mouvement orbital de maintenir un flottement axial et un léger contact axial étanche avec la volute fixe, lorsque les forces axiales varient considérablement au cours du processus de compression ou au cours du processus de démarrage.
PCT/CN2012/000773 2011-06-07 2012-06-06 Dispositif volumétrique à volute avec butée bidirectionnelle Ceased WO2012167611A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110150746.7A CN102817841B (zh) 2011-06-07 2011-06-07 一种带有双向推力轴承的涡卷式容积位移装置
CN201110150746.7 2011-06-07

Publications (1)

Publication Number Publication Date
WO2012167611A1 true WO2012167611A1 (fr) 2012-12-13

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PCT/CN2012/000773 Ceased WO2012167611A1 (fr) 2011-06-07 2012-06-06 Dispositif volumétrique à volute avec butée bidirectionnelle

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CN (1) CN102817841B (fr)
WO (1) WO2012167611A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220220852A1 (en) * 2019-04-30 2022-07-14 Agilent Technologies, Inc. Double Sided Oil Film Thrust Bearing in a Scroll Pump

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104343687B (zh) * 2013-07-31 2016-12-28 思科涡旋科技(杭州)有限公司 具有磁流体平动滑动推力轴承及密封结构的涡旋真空泵
CN104500395B (zh) * 2014-12-12 2016-08-17 沙无埃 涡旋压缩机

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CN1150997A (zh) * 1995-11-17 1997-06-04 倪诗茂 具有滑动平面推力轴承的容积式涡旋流体压缩装置
CN1782424A (zh) * 2004-11-30 2006-06-07 乐金电子(天津)电器有限公司 涡卷式压缩机的供油结构
JP2008196034A (ja) * 2007-02-15 2008-08-28 Ntn Corp スラスト軸受
JP2008248775A (ja) * 2007-03-30 2008-10-16 Mitsubishi Electric Corp スクロール圧縮機
JP2008286135A (ja) * 2007-05-18 2008-11-27 Denso Corp 圧縮機

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JPH0587129A (ja) * 1991-09-30 1993-04-06 Ntn Corp 旋回部材のスラスト支持装置
US7467933B2 (en) * 2006-01-26 2008-12-23 Scroll Laboratories, Inc. Scroll-type fluid displacement apparatus with fully compliant floating scrolls
JP4739103B2 (ja) * 2006-04-21 2011-08-03 サンデン株式会社 スクロール型流体機械
JP5288941B2 (ja) * 2008-08-19 2013-09-11 株式会社日本自動車部品総合研究所 スクロール型圧縮機

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Publication number Priority date Publication date Assignee Title
CN1150997A (zh) * 1995-11-17 1997-06-04 倪诗茂 具有滑动平面推力轴承的容积式涡旋流体压缩装置
CN1782424A (zh) * 2004-11-30 2006-06-07 乐金电子(天津)电器有限公司 涡卷式压缩机的供油结构
JP2008196034A (ja) * 2007-02-15 2008-08-28 Ntn Corp スラスト軸受
JP2008248775A (ja) * 2007-03-30 2008-10-16 Mitsubishi Electric Corp スクロール圧縮機
JP2008286135A (ja) * 2007-05-18 2008-11-27 Denso Corp 圧縮機

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220220852A1 (en) * 2019-04-30 2022-07-14 Agilent Technologies, Inc. Double Sided Oil Film Thrust Bearing in a Scroll Pump
US12098642B2 (en) * 2019-04-30 2024-09-24 Agilent Technologies, Inc. Double sided oil film thrust bearing in a scroll pump

Also Published As

Publication number Publication date
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CN102817841B (zh) 2015-07-08

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