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EP3081815A1 - Spiralverdichter - Google Patents

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Publication number
EP3081815A1
EP3081815A1 EP16155379.7A EP16155379A EP3081815A1 EP 3081815 A1 EP3081815 A1 EP 3081815A1 EP 16155379 A EP16155379 A EP 16155379A EP 3081815 A1 EP3081815 A1 EP 3081815A1
Authority
EP
European Patent Office
Prior art keywords
thrust
plate
fixed
thrust bearing
scroll
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
Application number
EP16155379.7A
Other languages
English (en)
French (fr)
Other versions
EP3081815B1 (de
Inventor
Hisao Mizuno
Akihiro Noguchi
Takashi Goto
Toshiyuki Shikanai
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.)
Mitsubishi Heavy Industries Thermal Systems Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Publication of EP3081815A1 publication Critical patent/EP3081815A1/de
Application granted granted Critical
Publication of EP3081815B1 publication Critical patent/EP3081815B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
    • F04C18/0253—Details concerning the base
    • 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
    • F04C2230/90—Improving properties of machine parts
    • F04C2230/91—Coating

Definitions

  • the present invention relates to a scroll compressor provided with a thrust plate formed of an abrasion-resistant material on a thrust bearing supporting an orbiting scroll.
  • a scroll compressor includes a compression mechanism having a pair of fixed and orbiting scrolls each provided with a spiral wrap standing on one side of an end plate.
  • the end plate of the fixed scroll is fixed to a fixed member, and the orbiting scroll engages with the fixed scroll to form a compression chamber.
  • Such an end plate is, at a back surface thereof, supported by a thrust bearing.
  • the orbiting scroll can be driven to orbit about the fixed scroll.
  • a thin plate-shaped thrust plate formed of an abrasion-resistant material, such as a steel plate, to prevent seizure is provided on a thrust bearing surface of the thrust bearing on which the orbiting scroll slides when it is driven to orbit.
  • the thrust plate has a relatively-large thickness.
  • the thrust plate in the case of a plate material having a thickness of about 5 mm, the thrust plate is directly fixed to the thrust bearing via countersunk screws or the like.
  • the thrust plate In the case of a plate material having a thickness of about 0.5 to 2 mm, the thrust plate cannot be directly screwed onto the thrust bearing. For this reason, bending pieces are, as described in Patent Literature 2, provided respectively at plural points of the outer periphery of the thrust plate, and are locked at cutouts of the thrust bearing to hold the thrust plate on the thrust bearing surface.
  • the thrust plate described above is held in the state in which the back surface of the end plate of the orbiting scroll and the thrust bearing sandwich the thrust plate, and is not directly fixed. For this reason, the thrust plate is released and moves due to an excessive thrust load caused by, e.g., liquid compression, damage of the bent piece(s), or abrasion of the mound. This leads to a problem that failure, damage, etc. of the compressor are caused by contact between the thrust plate and an anti-rotation mechanism or a housing, the anti-rotation mechanism and the housing being provided between the back surface of the end plate of the orbiting scroll and the thrust bearing.
  • the present invention is intended to provide a scroll compressor configured such that a thin plate-shaped thrust plate having a thickness of even 2 mm or less can be firmly fixed to a thrust bearing to prevent troubles caused by contact between the thrust plate and another component due to movement of the thrust plate.
  • a scroll compressor of a first aspect of the present invention includes a fixed scroll including an end plate fixed to a fixed member, an orbiting scroll engaging with the fixed scroll to form a compression chamber, having an end plate back surface supported by a thrust bearing, and driven to orbit about the fixed scroll, and a thin plate-shaped thrust plate provided on a thrust bearing surface of the thrust bearing and formed of an abrasion-resistant material, the orbiting scroll sliding on the thrust plate at the end plate back surface.
  • the thrust plate includes a plurality of elastically-deformable hook-shaped locking claws provided respectively at plural points of the outer periphery of the thrust plate, and is fixed in such a manner that hook portions of the locking claws are locked on a thrust bearing side.
  • the thin plate-shaped thrust plate placed on the thrust bearing surface of the thrust bearing can be locked on the thrust bearing side via the hook portions of the elastically-deformable hook-shaped locking claws provided respectively at the plural points of the outer periphery of the thrust plate.
  • a thin plate-shaped thrust plate having a thickness of even 2 mm or less can be directly fixed onto the thrust bearing surface of the thrust bearing. This restricts movement of the thin plate-shaped thrust plate due to, e.g., an excessive thrust load or abrasion of a mound, and therefore, reduces or prevents troubles that failure, damage, etc. of the compressor are caused by contact between the thrust plate and another component, such as an anti-rotation mechanism or a housing, due to movement of the thrust plate.
  • the hook-shaped locking claws may be provided respectively at at least two points at a predetermined interval at the outer periphery of the thrust plate.
  • the thrust plate since the hook portions of the hook-shaped locking claws are locked on the thrust bearing side at the plural points, i.e., two or more points, of the thrust plate, the thrust plate can be directly fixed onto the thrust bearing surface of the thrust bearing. It can be further ensured that the thin plate-shaped thrust plate is hooked by the locking claws to restrict the movement, and therefore, reduces or prevents the troubles caused by contact between the thrust plate and another component, such as the anti-rotation mechanism or the housing, due to movement of the thrust plate.
  • a scroll compressor of a second aspect of the present invention includes a fixed scroll including an end plate fixed to a fixed member, an orbiting scroll engaging with the fixed scroll to form a compression chamber, having an end plate back surface supported by a thrust bearing, and driven to orbit about the fixed scroll, and a thin plate-shaped thrust plate provided on a thrust bearing surface of the thrust bearing and formed of an abrasion-resistant material, the orbiting scroll sliding on the thrust plate at the end plate back surface.
  • the thrust plate includes a plurality of weld nuts provided respectively at plural points of the outer periphery on a back side of the thrust plate, and is fixed via bolts screwed respectively into the weld nuts from an opposite bearing surface side of the thrust bearing.
  • the thin plate-shaped thrust plate placed on the thrust bearing surface of the thrust bearing can be fixed in such a manner that the bolts are screwed respectively into the weld nuts from the opposite bearing surface side of the thrust bearing at the plural points of the outer periphery of the thrust plate.
  • a thin plate-shaped thrust plate having a thickness of even 2 mm or less can be, by direct bolting, fixed onto the thrust bearing surface of the thrust bearing. This restricts movement of the thin plate-shaped thrust plate due to, e.g., an excessive thrust load or abrasion of a mound, and therefore, reduces or prevents troubles that failure, damage, etc. of the compressor are caused by contact between the thrust plate and another component, such as an anti-rotation mechanism or a housing, due to movement of the thrust plate.
  • each bolt may be provided with a hexagonal hole at a head portion thereof.
  • the thrust plate can be, using SCH bolts having head portions with hexagonal holes, directly bolted and fixed onto the thrust bearing surface of the thrust bearing.
  • the thrust plate can be further ensured that movement of the thin plate-shaped thrust plate is restricted by bolting. This reduces or prevents the troubles caused by contact between the thrust plate and another component, such as the anti-rotation mechanism or the housing, due to movement of the thrust plate.
  • a scroll compressor of a third aspect of the present invention includes an orbiting scroll engaging with a fixed scroll to form a compression chamber, having an end plate back surface supported by a thrust bearing, and driven to orbit about the fixed scroll, and a thin plate-shaped thrust plate provided on a thrust bearing surface of the thrust bearing and formed of an abrasion-resistant material, the orbiting scroll sliding on the thrust plate at the end plate back surface.
  • a plurality of countersunk screw holes are formed respectively at plural points of the circumference of the thrust bearing, countersunk holes formed respectively with bent portions to be fitted respectively into the countersunk screw holes are formed at the peripheral edge of the thrust plate, and the thrust plate is fixed onto the thrust bearing via countersunk screws fitted respectively into the countersunk holes.
  • the thin plate-shaped thrust plate placed on the thrust bearing surface of the thrust bearing can be fixed in such a manner that the countersunk holes formed with the bent portions and formed at the peripheral edge of the thrust plate are fitted respectively into the countersunk screw holes of the thrust bearing and that the countersunk screws are fastened respectively into the countersunk screw holes of the thrust bearing via the countersunk holes.
  • a thin plate-shaped thrust plate having a thickness of even 2 mm or less can be, by direct screwing, fixed onto the thrust bearing surface of the thrust bearing. This restricts movement of the thin plate-shaped thrust plate due to, e.g., an excessive thrust load or abrasion of a mound, and therefore, reduces or prevents troubles that failure, damage, etc. of the compressor are caused by contact between the thrust plate and another component, such as an anti-rotation mechanism or a housing, due to movement of the thrust plate.
  • a surface of a head portion of each countersunk screw may be embedded in a corresponding one of the countersunk holes of the thrust plate, and may be positioned lower than the thrust bearing surface.
  • the thrust plate can be screwed and fixed without protrusion of the head portions of the countersunk screws from the bearing surface. It can be further ensured that movement of the thin plate-shaped thrust plate is restricted by screwing. This reduces or prevents the troubles caused by contact between the thrust plate and another component, such as the anti-rotation mechanism or the housing, due to movement of the thrust plate.
  • movement of the thin plate-shaped thrust plate due to, e.g., an excessive thrust load or abrasion of the mound can be restricted, and therefore, troubles that failure, damage, etc. of the compressor are caused by contact between the thrust plate and another component, such as the anti-rotation mechanism or the housing, due to movement of the thrust plate can be reduced or prevented.
  • Fig. 1 illustrates a longitudinal sectional view of a main portion of a scroll compressor of the first embodiment of the present invention
  • Fig. 2 illustrates an enlarged sectional view of part of the scroll compressor where a thrust plate is fixed.
  • a scroll compressor 1 includes a housing 2 forming an outer shell of the scroll compressor 1.
  • the housing 2 includes a cylindrical rear housing 3 formed in a cup shape, and a front housing 4 fitted into an opening of the rear housing 3 with a sealing member such as an O-ring being interposed therebetween and integrally joined to the rear housing 3 with, e.g., bolts to form the housing 2 with an enclosed structure.
  • a drive shaft 7 is rotatably supported by a main bearing 5 and a sub-bearing 6 at the front housing 4.
  • the drive shaft 7 includes a crank pin 8 eccentric toward one end side with respect to a shaft center by a predetermined dimension, and is, on the other end side, configured to protrude from a bearing boss portion 4A of the front housing 4 to the outside.
  • a not-shown pulley with an electromagnetic clutch is attached to the end of the drive shaft 7 protruding to the outside so that power can be input from an external drive source such as an engine.
  • An opening of the housing 2 from which the drive shaft 7 protrudes is sealed from atmosphere by a lip seal 9.
  • a scroll compressor mechanism 10 is incorporated in the rear housing 3.
  • the scroll compressor mechanism 10 includes a pair of a fixed scroll (not shown) and an orbiting scroll 11, each scroll being provided with a spiral wrap standing on one side of an end plate.
  • the end plate of the fixed scroll is, with, e.g., bolts, fixed to the rear housing 3 which is a fixed member.
  • the orbiting scroll 11 engages with the fixed scroll to form a compression chamber, and a back surface of the end plate 11A of the orbiting scroll 11 is supported by a thrust bearing 12 provided at the front housing 4.
  • the orbiting scroll 11 is provided so that the orbiting scroll 11 can be driven to orbit about the fixed scroll.
  • the orbiting scroll 11 includes a boss portion 11B at the back surface of the end plate 11A. Further, the orbiting scroll 11 is provided such that the boss portion 11B is, via a driven crank mechanism 15 including a drive bush 13 and an orbiting bearing 14, coupled to the crank pin 8 provided at one end of the drive shaft 7, and therefore, the orbiting scroll 11 can be driven to orbit about the fixed scroll.
  • Other methods such as a pin/link method may be, as the anti-rotation mechanism 16, used other than the method using the Oldham's ring.
  • a mound 12B having a predetermined height is formed at the outer periphery of a thrust bearing surface 12A of the thrust bearing 12, on which the orbiting scroll 11 slides by orbiting thereof, so that a thin plate-shaped thrust plate 17 formed of an abrasion-resistant material such as a steel plate can be placed to prevent seizure.
  • the scroll compressor 1 having the above-described configuration is not a special compressor, but has been known conventionally and broadly. The features of the present embodiment are the following improvements in installation and structure of the thrust plate 17 described above.
  • the thrust plate 17 described herein is a thin plate having a thickness of 2 mm or less and having a doughnut discoid shape, and can be placed on the thrust bearing surface 12A of the thrust bearing 12 inside the mound 12B.
  • a plurality of hook-shaped locking claws 18 with hook portions 18A are, as illustrated in Fig. 2 , provided at at least two points, preferably at three or more points, at a predetermined interval (equal interval) in a circumferential direction, the locking claws 18 being locked by elastically deforming by an opposite-bearing-surface-side portion of the thrust bearing 12.
  • Each hook portion 18A of the hook-shaped locking claws 18 is locked at the opposite-bearing-surface-side portion of the thrust bearing 12 via a cutout 12C formed at an outer peripheral surface of the thrust bearing 12, and as a result, the thin plate-shaped thrust plate 17 is fixed to the thrust bearing surface 12A of the thrust bearing 12.
  • Each hook portion 18A of the hook-shaped locking claws 18 is not limited to the hook portion 18A in a shape bending at three points as illustrated in Fig. 2 , and may be deformable in various shapes such as a shape bending at right angle at two points, a shape bending in a triangular shape at two points, a shape curving smoothly, and a shape in which a hooking portion is bent back.
  • the portion of the thrust bearing 12 on which the hook portions 18A of the hook-shaped locking claws 18 are hooked has been described as the opposite-bearing-surface-side portion on which the hook portions 18A of the locking claws 18 are hooked using the narrow portion 4A which protrudes from the front housing 4 to engage with the rear housing 3.
  • the present invention is not limited to such a configuration.
  • the configuration may be employed, in which a hooking portion is optionally formed at the outer peripheral surface of the thrust bearing 12.
  • the thrust plate 17 of the present embodiment is, as described above, fixed onto the thrust bearing surface 12A of the thrust bearing 12 in such a manner that the hook portions 18A of the elastically-deformable hook-shaped locking claws 18 provided respectively at plural points of the outer periphery of the thrust plate 17 are locked at the thrust bearing 12.
  • a thin plate-shaped thrust plate 17 having a thickness of even 2 mm or less can be directly fixed onto the thrust bearing surface 12 of the thrust bearing 12A.
  • the thrust plate 17 Since the hook-shaped locking claws 18 are provided at at least two points of the outer periphery of the thrust plate 17 at the predetermined interval, the thrust plate 17 is, at two or more points, locked at the thrust bearing 12 by the hook portions 18A of the hook-shaped locking claws 18, and therefore, the thrust plate 17 can be directly fixed onto the thrust bearing surface 12A of the thrust bearing 12. Thus, it can be further ensured that the thin plate-shaped thrust plate 17 is hooked by the locking claws 18 to restrict the movement. This reduces or prevents the troubles caused by contact between the thrust plate 17 and another component, such as the anti-rotation mechanism 16 or the housing 2, due to movement of the thrust plate 17.
  • the present embodiment is different from the above-described first embodiment in that a thrust plate 17 is fixed using weld nuts and bolts. Since the present embodiment is similar to the first embodiment in other points, description thereof will not be repeated.
  • weld nuts 19 are, at a predetermined interval (equal interval), welded to plural points (two or more points, and preferably three or more points) of the back side of the outer periphery of the thin plate-shaped thrust plate 17 provided on a thrust bearing surface 12A of a thrust bearing 12.
  • Each weld nut 19 is disposed in a corresponding one of a plurality of recesses 12D formed respectively at plural points of the thrust bearing surface 12A.
  • a bolt 20 provided with a hexagonal hole 20A at a head portion thereof is screwed into each weld nut 19 from an opposite bearing surface side of the thrust bearing 12 so that the thin plate-shaped thrust plate 17 having a thickness of 2mm or less can be fixed onto the thrust bearing surface 12A inside a mound 12B.
  • a bolt having favorable thermal resistance or abrasion resistance more specifically an SCH bolt etc., may be used as the bolt 20.
  • a thin plate-shaped thrust plate 17 having a thickness of even 2 mm or less can be, by direct bolting, fixed onto the thrust bearing surface 12A of the thrust bearing 12 via the bolts 20. This restricts movement of the thin plate-shaped thrust plate 17 due to an excessive thrust load or abrasion of the mound 12B. Consequently, the following troubles can be reduced or prevented: failure, damage, etc. of a compressor 1 caused by contact between the thrust plate 17 and another component, such as an anti-rotation mechanism 16 or a housing 2, due to movement of the thrust plate 17.
  • Each bolt 20 fastening and fixing the thrust plate 17 is provided with the hexagonal hole 20A at the head portion thereof.
  • the thrust plate 17 can be, by direct bolting using the hexagonal holes 20A, fixed onto the thrust bearing surface 12A of the thrust bearing 12.
  • movement of the thin plate-shaped thrust plate 17 is restricted by bolting. This reduces or prevents the troubles caused by contact between the thrust plate 17 and another component, such as the anti-rotation mechanism 16 or the housing 2, due to movement of the thrust plate 17.
  • the present embodiment is different from the above-described first and second embodiments in that a thrust plate 17 is fixed using countersunk screws. Since the present embodiment is similar to the first and second embodiments in other points, description thereof will not be repeated.
  • countersunk screw holes 12E are formed respectively at plural points of the circumference of the thrust bearing surface 12A of the thrust bearing 12, and countersunk holes 22 formed respectively with bent portions 22A to be fitted respectively into the countersunk screw holes 12E are formed at the peripheral edge of the thrust plate.
  • the thrust plate 17 is fixed onto the thrust bearing 12 via the countersunk screws 21 fitted respectively into the countersunk holes 22.
  • a thin plate-shaped thrust plate 17 having a thickness of even 2 mm or less can be, by direct bolting, fixed onto the thrust bearing surface 12A of the thrust bearing 12 such that a head portion of each countersunk screw 21 does not protrude from the bearing surface.
  • each countersunk screw 21 is embedded in a corresponding one of the countersunk holes 22 of the thrust plate 17, and is positioned lower than the thrust bearing surface.
  • the thrust plate 17 having a thickness of 2 mm or less is, by direct screwing, fixed from the thrust bearing surface 12A side with the countersunk screws 21, the thrust plate 17 can be screwed and fixed without protrusion of the head portions of the countersunk screws 21 from the bearing surface. It can be further ensured that movement of the thin plate-shaped thrust plate is restricted by screwing. This reduces or prevents the troubles caused by contact between the thrust plate 17 and another component, such as the anti-rotation mechanism or the housing, due to movement of the thrust plate.
  • the present invention is not limited to the above-described embodiments, and variations may be optionally made.
  • the example where the present invention is applied to the open type scroll compressor driven by power supplied from the outside has been described.
  • the present invention is applicable to a scroll compressor provided with a motor incorporated in a housing.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP16155379.7A 2015-02-19 2016-02-12 Spiralverdichter Active EP3081815B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2015030708A JP6513420B2 (ja) 2015-02-19 2015-02-19 スクロール圧縮機

Publications (2)

Publication Number Publication Date
EP3081815A1 true EP3081815A1 (de) 2016-10-19
EP3081815B1 EP3081815B1 (de) 2017-11-15

Family

ID=55353092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16155379.7A Active EP3081815B1 (de) 2015-02-19 2016-02-12 Spiralverdichter

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EP (1) EP3081815B1 (de)
JP (1) JP6513420B2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3480467A4 (de) * 2016-12-02 2019-06-05 Mitsubishi Heavy Industries Thermal Systems, Ltd. Spiralverdichter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6842385B2 (ja) * 2017-08-25 2021-03-17 三菱重工サーマルシステムズ株式会社 スクロール圧縮機

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5853287A (en) * 1996-02-20 1998-12-29 Matsushita Electric Industrial Co., Ltd. Scroll compressor having a thrust plate
JP2002242859A (ja) 2001-02-16 2002-08-28 Mitsubishi Heavy Ind Ltd スクロール圧縮機
JP2004060469A (ja) 2002-07-25 2004-02-26 Mitsubishi Heavy Ind Ltd スクロール型圧縮機
EP1867876A2 (de) * 2006-06-14 2007-12-19 Mitsubishi Heavy Industries, Ltd. Spiralverdichter

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH079234B2 (ja) * 1984-03-30 1995-02-01 三菱電機株式会社 スクロール形流体機械
JPS62159780A (ja) * 1986-01-06 1987-07-15 Mitsubishi Electric Corp スクロ−ル圧縮機
JPS62173577U (de) * 1986-04-23 1987-11-04
US5044904A (en) * 1990-01-17 1991-09-03 Tecumseh Products Company Multi-piece scroll members utilizing interconnecting pins and method of making same
JP2600552B2 (ja) * 1991-12-27 1997-04-16 ソニー株式会社 ディスクカートリッジ
JPH08200245A (ja) * 1995-01-25 1996-08-06 Sanyo Electric Co Ltd スクロール型無給油式流体機械
JPH1162236A (ja) * 1997-08-08 1999-03-05 Yasuyuki Tsuruta コンクリート打設補助器具及びコンクリート打設補助器具における支持部材の高さ調整方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5853287A (en) * 1996-02-20 1998-12-29 Matsushita Electric Industrial Co., Ltd. Scroll compressor having a thrust plate
JP2002242859A (ja) 2001-02-16 2002-08-28 Mitsubishi Heavy Ind Ltd スクロール圧縮機
JP2004060469A (ja) 2002-07-25 2004-02-26 Mitsubishi Heavy Ind Ltd スクロール型圧縮機
EP1867876A2 (de) * 2006-06-14 2007-12-19 Mitsubishi Heavy Industries, Ltd. Spiralverdichter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3480467A4 (de) * 2016-12-02 2019-06-05 Mitsubishi Heavy Industries Thermal Systems, Ltd. Spiralverdichter

Also Published As

Publication number Publication date
JP2016151264A (ja) 2016-08-22
JP6513420B2 (ja) 2019-05-15
EP3081815B1 (de) 2017-11-15

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