EP0122068A1 - Mécanisme d'emboîtement des volutes pour un appareil à volutes à déplacement de fluide - Google Patents
Mécanisme d'emboîtement des volutes pour un appareil à volutes à déplacement de fluide Download PDFInfo
- Publication number
- EP0122068A1 EP0122068A1 EP84301780A EP84301780A EP0122068A1 EP 0122068 A1 EP0122068 A1 EP 0122068A1 EP 84301780 A EP84301780 A EP 84301780A EP 84301780 A EP84301780 A EP 84301780A EP 0122068 A1 EP0122068 A1 EP 0122068A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- end plate
- scroll
- hole
- scroll member
- bore
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 29
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 15
- 230000007246 mechanism Effects 0.000 title claims description 25
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000007373 indentation Methods 0.000 claims abstract description 4
- 230000000149 penetrating effect Effects 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 230000006872 improvement Effects 0.000 claims description 2
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 241000254043 Melolonthinae Species 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
- F01C21/102—Adjustment of the interstices between moving and fixed parts of the machine by means other than fluid pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C1/00—Rotary-piston machines or engines
- F01C1/02—Rotary-piston machines or engines 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
- F01C1/0207—Rotary-piston machines or engines 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
- F01C1/0215—Rotary-piston machines or engines 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C17/00—Arrangements for drive of co-operating members, e.g. for rotary piston and casing
- F01C17/06—Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements
- F01C17/063—Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements with only rolling movement
-
- 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
- F04C2230/00—Manufacture
- F04C2230/60—Assembly methods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2230/00—Manufacture
- F05B2230/60—Assembly methods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2250/00—Geometry
- F05B2250/10—Geometry two-dimensional
- F05B2250/15—Geometry two-dimensional spiral
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2250/00—Geometry
- F05B2250/20—Geometry three-dimensional
- F05B2250/25—Geometry three-dimensional helical
Definitions
- This invention relates to a fluid displacement apparatus, and more particularly, to an adjusting mechanism of angular relationship between spiral elements for a scroll type fluid displacement apparatus.
- Scroll type fluid displacement apparatus are well known in the prior art.
- U.S. Patent No. 801,182 discloses a device including two scroll members each having a circular end plate and a spiroidal or involute spiral element. These scroll members are maintained angularly and radially offset so that both spiral elements interfit to make a plurality of line contacts between their spiral curved surfaces to thereby seal off and define at least one pair of fluid pockets.
- the relative orbital motion of the two scroll members shifts the line contacts along the spiral curved surfaces and, therefore, the fluid pockets change in volume. Since the volume of the fluid pockets increases or decreases dependent on the direction of the orbiting motion, the scroll type fluid displacement apparatus is applicable to compress, expand or pump fluids.
- the- scroll type compressor has certain advantages, such as fewer parts and continuous compression of fluid.
- scroll type compressors has the problem that adjusting of angular relationship between the spiral elements is difficult and operation. If the angular relationship between spiral element is in error, a radial sealing points between two spiral elements are resolved to causes the fluid leakage. As a result of the fluid leakage, a efficiency of the compressor does not reach the predetermined volume.
- One solution to resolved the above problem is reduced error of parts.
- the manufacturing of the parts is complicated and spend much cost.
- Further solution to resolved the problem is method to indirectly the limits of holerale maintained the angular relationship between the both spiral elements. However, since these methods have many factors which cause the unsuitable angular relationship, these methods can not become the final solution.
- one technique to adjust the angular relationship is provided that the hole is formed on the end wall surface of spiral element of one scroll member, and the hole in formed through the front end plate opposite to said hole of the scroll member.
- the adjusting of angular relationship between both scroll elements is operated by angle adjusting member inserted in the both holes from outside of the front end plate.
- a scroll type fluid displacement apparatus including a first scroll member having a first end plate from which a first spiral element extends, a second scroll member having a second end plate from which a second spiral element extends, said first and second scroll members interfitting at an angular and radial offset to make a plurality of line contacts to define at least one pair of sealed off fluid pockets, a driving mechanism operatively connected to said second scroll member to effect the orbital motion of said second scroll member while the rotation of said second scroll member prevented by a rotation preventing/thrust bearing mechanism, whereby the fluid pockets change volume
- said first scroll member being formed with a bore having a predetermined depth
- said second end plate of second scroll member formed through a penetrating hole
- said front end plate having a hole extending completely through to be substantial alignment with said bore and penetrating hole by adjusting member inserted into bore and penetrating hole through said hole of front end plate during assembly of the apparatus to set the angular relationship between both scroll members.
- One embodiment of the invention includes a housing having a front end plate, and a pair of scroll members.
- One of the scroll members is fixedly disposed relative to the housing and has an end plate from which a first wrap extends into the interior of the housing.
- the other scroll member is movably disposed for non-rotative orbital movement within the interior of the housing and has an end plate from which a second wrap extends.
- the first and second wraps interfit at an angular and radial offset to make a plurality of line contacts to define at least one pair of sealed off fluid pockets.
- a driving mechanism is operatively connected to the other scroll member to effect its orbital motion, whereby the fluid pockets move and change volume.
- the fixed scroll member is formed with a bore which has predetermined depth, and the front end plate of the housing is formed with a hole extending completely through it.
- the hole is adapted to be aligned with the bore by an adjustment member which extends through it into the bore during the assembly of the apparatus to set the angular relationship between the two scroll members.
- the present invention is also directed to the structure of the adjustment member per se, and to a method for assembling the scroll type fluid displacement apparatus.
- FIG. 1 an embodiment of a scroll type fluid displacement apparatus is accordance with the present invention, in particular as scroll type refrigerant compressor is shown.
- the compressor includes a compressor housing 10 having a front end plate 11 and a cup shaped casing 12 fastened on the rear end surface of front end plate 11.
- An opening 111 is formed in the center of front end plate 11 for penetration or passage of a drive shaft 13.
- An opening portion of cup shaped casing 12 is covered by front end plate 11, and mating surface between front end plate 11 and cup shaped casing 12 is sealed by an O-ring 14.
- Front end plate 11 has an annular sleeve 15 projecting from the front end surface thereof which surrounds drive shaft 13 and defines a shaft seal a cavity.
- Drive shaft 13 is rotatably supported by sleeve 15 through a bearing 16 located within the front end of sleeve 15.
- Drive shaft 13 has a disk shaped rotor 131 at its inner end which is rotatably supported by front end plate 11 through a bearing 17 located within opening 111 of front end plate 11.
- cup shaped casing 12 A number of elements is disposed within the interior of cup shaped casing 12 including a fixed scroll 20, an orbiting scroll 21, a driving mechanism for orbiting scroll and a rotation preventing/thrust bearing mechanism 22 for orbiting scroll 21.
- the interior of cup shaped casing 12 is defined between the inner wall of cup shaped casing 12 and the rear end surface of front end plate 11.
- Fixed scroll 20 includes a circular end plate 201, a wrap or spiral element 202 affixed to or extending from one side surface of circular end plate 201 and a plurality of internally threaded bosses 203 axially projecting from the other side surface of circular end plate 201.
- An axial end surface of each bosses 203 is seated on the inner surface of end plate 121 of cup shaped casing 12 and is fixed to end plate 121 by bolts 23.
- Fixed scroll 20 is thus fixed within cup shaped casing 12.
- Circular end plate 201 of fixed scroll 20 partitions the inner chamber of cup shaped casing 12 into two chamber, such as discharge chamber 24 having bosses 203, and a suction chafer 25 in which spiral element 202 is located.
- a seal ring 26 is placed between the outer peripheral surface of circular end plate 201 and the inner surface of cup shaped casing 12 to secure the sealing therebetween.
- a hole or discharge port 204 is formed through circular end plate 201 of fixed scroll 20 at a position near the center of spiral element 202; hole 204 is connected between the fluid pocket of the spiral elements center and discharge chamber 24.
- Orbiting scroll 21, which is disposed in suction chamber 25, comprises a circular end plate 211 and a wrap or spiral element 212 affixed to or extending from one side surface of end plate 211.
- the spiral element 212 of orbiting scroll 21 and spiral element 202 interfit at an angular offset of 180° and predetermined radial offset to make a plurality of line contacts. Therefore, at least one pair of sealed off fluid pockets are defined between their spiral elements 202 and 212.
- Orbiting scroll 21 is connected to the driving means and rotation preventing/thrust bearing means 22. These lastest two means effect the orbital motion of orbiting scroll 21 by rotation of drive shaft 13.
- Drive shaft 13 is formed with a disk shaped 131 at its inner end and is rotatably supported by sleeve 15 through a bearing 16 which is disposed within sleeve portion 15. D sk shaped portion 11 through bearing 17.
- a crank pin or drive pin 132 projects axially from an end surface of disk portion 131 and is radially offset from the center of drive shaft 13.
- Circular plate 211 of orbiting scroll 21 is provided with a tubular boss 213 axially projecting from an end surface opposite to the side thereof from which spiral element 212 extends.
- a discold or short axial bushing 27 is fitted into boss 213, and is rotatably supported therein by a bearing, such as a needle bearing 28.
- Bushing 27 has a balance weight 271 which is shaped as a portion of a disk or ring and extends radially outward from bushing 27 along a front surface thereof.
- An eccentric hole 272 is formed in bushing 27 radially offset from the center of bushing 27.
- Drive pin.132 is fitted into the eccentrically disposed hole 272 within which a bearing 29 may be applied.
- Bushing 27 is therefore driven by the revolution of drive pin 132 and is permitted to rotate by needle bearing 28.
- Rotation preventing/thrust bearing device 22 is disposed between the rear end surface of front end plate 11 and the end surface of circular end plate 211 of orbiting scroll 21 on the side opposite spiral element 212.
- Rotation preventing/thrust bearing device 22 includes a fixed portion, an orbital portion and a bearing element, such as a plurality of spherical balls.
- the fixed portion includes an annular fixed race 221 having one end surface fitted against the axial end surface of an annular projection of front end plate 11, and a fixed ring 222 fitted against the other axial end surface of fixed race 221.
- Fixed race 221 and fixed ring 222 are attached to the axial end surface of annular projection by pins 223.
- the orbital portion also includes an annular orbital race 224, which has one end surface fitted against an axial end surface of circular end plate 221, and an orbital ring 225 fitted against the other axial end surface of orbital race 224 to extend outwardly therefrom and cover the other axial end surface of orbital race 224.
- a small clearance is maintained between the end surface of fixed ring 222 and the end surface of orbital ring 225.
- Orbital race 224 and orbital ring 225 are attached to the end surface of circular end plate 211 by pins 226.
- rings 222, 225 may be formed integral with races 221, 224, respectively.
- Fixed ring 222 and orbital ring 225 each have a plurality of holes or pockets 222a and 225a in the axial direction, the number of holes or pockets in each of rings 222 and 225 being equal.
- the holes or pockets 222a on fixed ring 222 correspond to or are a mirror image of the holes or pockets 225a on orbital ring 225; i.e., each pair of pockets facing each other have the same size and pitch, and the radial distance of the pockets from the center of their respective rings 222 and 225 is the same; i.e., the centers of the pockets are located the same distance from the center of rings 222 and 225.
- fixed scroll 20 is at least provided with a projection 205 projecting from the outer surface of spiral element 202, and preferably integral with it.
- a round bore 206 which has predetermined depth, is formed in projection 205 of fixed scroll 20. As shown in Figure 4, round bore 206 is placed on a line drawn through a center of generating circule of the spiral element which has a predetermined angule relative to a line connected through a plurality of line contacts A, B between the spiral element 202 and 212.
- Circular end plate 211 of orbiting scroll 21 is formed through a penetrating hole 214.
- Front end plate 11 is also formed with a round hole 113.
- Hole l13 is designed to be aligned with bore 206 and penetrating hole 214, in a manner described herein after.
- a part of fixed ring 221 of rotation preventing/thrust bearing mechanism 22 which extends over the end of annular projection to cover hole 113 may be formed with a cut portion 221C.
- Hole l13 has a diameter larger than the diameter of bore 206 and penetrating hole 214.
- front end plate 11 After inserted adjustment member 40, front end plate 11 is rotated coward the undriving direction to interact ball 227 between facing pockets 222a and 225a. Because, during the operation of the apparatus ball 227 of rotation preventing/thrust bearing mechanism 22 is usually interacted between the edge of both pockets 222a and 225a without gap to prevent the rotation of orbiting scroll 21, thereby the formal angular relationship between fixed ring 222 and orbiting scroll 21 is determined. Then, drive shaft 13 is rotated toward the driving direction due to a predetermined torque to rotate spiral element 212 of orbiting scroll 21 around adjustment member 40 to push spiral element 212 against spiral element 202 of fixed scroll 20.
- orbiting ring 225 is fixed on end plate 211 of orbiting scroll 21, therefore orbiting ring 225 is rotated together with orbiting scroll 21. Since, ball 227 of rotation preventing/thrust bearing mechanism 22 is interacted between the edge of both pockets, fixed ring 222, hence front end plate 11 is rotated toward the driving direction following with the rotation of orbiting scroll 21. Thus, the relationship between both scroll 20, 21 and rotation preventing mechanism 22 and orbiting scroll 21 are set up the operating condition of the compressor.
- adjustment member 40 is removed from compressor unit.
- the offset between the scroll is fixed by tightening the fastening means.
- a plug 41 is screwed into a screw portion l13a of hole 113, add seal ring 42 is disposed within an annular depression 113b formed at end portion of hole l13 to form a seal between plug 41 and hole 113 to seal off the inner chamber of cup shaped casing 12.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Rotary Pumps (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP43655/83 | 1983-03-15 | ||
JP58043655A JPS59168289A (ja) | 1983-03-15 | 1983-03-15 | スクロ−ル型流体装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0122068A1 true EP0122068A1 (fr) | 1984-10-17 |
EP0122068B1 EP0122068B1 (fr) | 1988-06-15 |
Family
ID=12669875
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84301780A Expired EP0122068B1 (fr) | 1983-03-15 | 1984-03-15 | Mécanisme d'emboîtement des volutes pour un appareil à volutes à déplacement de fluide |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0122068B1 (fr) |
JP (1) | JPS59168289A (fr) |
AU (1) | AU569872B2 (fr) |
DE (1) | DE3472142D1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2157369A (en) * | 1984-03-21 | 1985-10-23 | Mitsubishi Heavy Ind Ltd | Scroll type fluid machine |
DE3546736C2 (de) * | 1984-03-21 | 1995-08-10 | Mitsubishi Heavy Ind Ltd | Spiralkompressor |
GB2299136A (en) * | 1995-03-22 | 1996-09-25 | Mitsubishi Electric Corp | Scroll compressor muffling |
US8038421B2 (en) | 2007-02-27 | 2011-10-18 | Mitsubishi Heavy Industries, Ltd. | Scroll compressor having an allowable angle of rotation |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59224490A (ja) * | 1983-06-03 | 1984-12-17 | Sanden Corp | スクロ−ル型流体装置 |
US4767293A (en) * | 1986-08-22 | 1988-08-30 | Copeland Corporation | Scroll-type machine with axially compliant mounting |
US4877382A (en) * | 1986-08-22 | 1989-10-31 | Copeland Corporation | Scroll-type machine with axially compliant mounting |
JP4824231B2 (ja) * | 2001-09-28 | 2011-11-30 | 株式会社日立産機システム | スクロール式流体機械の組立方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0061698A1 (fr) * | 1981-03-23 | 1982-10-06 | Sanden Corporation | Appareil avec un piston tournant pour déplacer un fluide et ayant un dispositif empêchant la rotation |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5915691A (ja) * | 1982-07-15 | 1984-01-26 | Sanden Corp | スクロ−ル型流体装置 |
-
1983
- 1983-03-15 JP JP58043655A patent/JPS59168289A/ja active Granted
-
1984
- 1984-03-15 EP EP84301780A patent/EP0122068B1/fr not_active Expired
- 1984-03-15 DE DE8484301780T patent/DE3472142D1/de not_active Expired
- 1984-03-16 AU AU25699/84A patent/AU569872B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0061698A1 (fr) * | 1981-03-23 | 1982-10-06 | Sanden Corporation | Appareil avec un piston tournant pour déplacer un fluide et ayant un dispositif empêchant la rotation |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2157369A (en) * | 1984-03-21 | 1985-10-23 | Mitsubishi Heavy Ind Ltd | Scroll type fluid machine |
DE3546736C2 (de) * | 1984-03-21 | 1995-08-10 | Mitsubishi Heavy Ind Ltd | Spiralkompressor |
GB2299136A (en) * | 1995-03-22 | 1996-09-25 | Mitsubishi Electric Corp | Scroll compressor muffling |
US5674061A (en) * | 1995-03-22 | 1997-10-07 | Mitsubishi Denki Kabushiki Kaisha | Scroll compression having a discharge muffler chamber |
US5863191A (en) * | 1995-03-22 | 1999-01-26 | Mitsubishi Denki Kabushiki Kaisha | Scroll compressor having a discharge muffler chamber |
GB2299136B (en) * | 1995-03-22 | 1999-04-21 | Mitsubishi Electric Corp | Scroll compressor |
US8038421B2 (en) | 2007-02-27 | 2011-10-18 | Mitsubishi Heavy Industries, Ltd. | Scroll compressor having an allowable angle of rotation |
US8403655B2 (en) | 2007-02-27 | 2013-03-26 | Mitsubishi Heavy Industries, Ltd. | Scroll compressor having an allowable angle of rotation |
Also Published As
Publication number | Publication date |
---|---|
AU2569984A (en) | 1984-11-22 |
JPS59168289A (ja) | 1984-09-21 |
JPS6365833B2 (fr) | 1988-12-16 |
EP0122068B1 (fr) | 1988-06-15 |
AU569872B2 (en) | 1988-02-25 |
DE3472142D1 (en) | 1988-07-21 |
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