WO2005067519A2 - Scroll compressor with wrap walls provided with an abradable coating and a load-bearing surface at radially outer locations - Google Patents
Scroll compressor with wrap walls provided with an abradable coating and a load-bearing surface at radially outer locations Download PDFInfo
- Publication number
- WO2005067519A2 WO2005067519A2 PCT/US2005/001088 US2005001088W WO2005067519A2 WO 2005067519 A2 WO2005067519 A2 WO 2005067519A2 US 2005001088 W US2005001088 W US 2005001088W WO 2005067519 A2 WO2005067519 A2 WO 2005067519A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- scroll
- coating
- wrap
- radially outer
- flank
- Prior art date
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
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/001—Radial sealings for working fluid
-
- 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
- F04C18/0269—Details concerning the involute wraps
-
- 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
- F04C2230/602—Gap; Clearance
-
- 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
- a scroll compressor has at least one of its wrap walls provided with an abradable coating to eliminate wrap leakage between opposed walls of the orbiting and non-orbiting scroll.
- the coating is only provided at radially inner locations, with radially outer locations being left to bear the load between the orbiting and non- orbiting scrolls.
- Scroll compressors are becoming widely utilized in refrigerant compression applications.
- a pair of interfitting scroll members each have a base and a generally spiral wrap extending from its base.
- the wraps interfit to define compression chambers.
- One of the two scrolls is caused to orbit relative to the other.
- the wrap walls are brought into contact, and the wrap tips are brought into contact with the floor of the base of the opposed scroll.
- the compression chambers are reduced in volume, thus compressing the entrapped refrigerant.
- a scroll compressor as known in the prior art is shown at 20 in Figure 1.
- the orbiting scroll 22 is placed adjacent the non-orbiting scroll 24.
- the orbiting scroll 22 has a generally spiral wrap 26 extending from the floor 27 of its base.
- the non- orbiting scroll 24 has its own generally spiral wrap 28 extending from its base 29.
- this prior art compressor has contact between the flank walls of the scroll wraps 26 and 28 to define the compression chambers.
- one intended point of contact between the wraps 26 and 28 is shown at 30 and 32. These points of contact define compression chambers such as compression chambers 100 and 102. Other points of contact are shown at C.
- gaps such as gap 34 between the points 30 and 32. When this occurs, there is potential leakage between chambers 100 and 102 which will reduce the efficiency of the compression process.
- the gap 34 can be caused due to machining variations, thermal distortion, or other problems.
- such scroll compressors are "radially compliant," allowing one of the wraps to move into abutting contact with the other at at least one point.
- a coating is provided adjacent radially inner or central portions of the wrap of at least one of the two scroll members.
- the coating is preferably made of an abradable or conformable material and thick enough such that after run-in of the scroll compressor, the coating will remain to eliminate gaps such as the prior art gap (Fig. 3, 34) by ensuring that the coating will only be worn away as would be necessary to adjust to the particular tolerances, etc. for the particular scroll elements.
- the coating is formed at a location spaced radially inward somewhat from the beginning of the wrap.
- the radially outer portions of the wrap will bear the radial load between the two wrap members. It would be undesirable to have this load carried by the coating entirely, since die coating may then wear away.
- Figure 1 is a cross-sectional view through a prior art scroll compressor.
- Figure 2 shows a problem with the prior art scroll compressor.
- Figure 3 is an enlarged view of a portion of Figure 2 showing the prior art problem.
- Figure 4 is a first step in forming an inventive scroll compressor.
- Figure 5 shows the final shape of the scroll compressor provided by this invention.
- Figure 6 shows another embodiment.
- a wrap 126 is shown in Figure 4. It should be understood that the present invention may preferably be utilized on the wraps of both the orbiting and non- orbiting scroll. It is within the scope of this invention that only one of the two scrolls carry the coating. As shown, the wrap has a radially outer portion 36, which preferably extends for at least 360°. Notably, and by comparing Figure 4 to Figure 2, it is clear that a portion of the uncoated portions 36 will include some of the contact points C. In this manner, the load can be born by these radially outer contact points. This portion is left uncoated, and formed of the metal typically utilized to form scroll wraps. A ditch begins at portion 38, and has a depth 39 extending to an end point 42. A coating 40 is placed within the ditch 39.
- abradable or conformable coatings include iron phosphate coatings, magnesium phosphate coatings, nickel polymer amalgams, and other materials that abrade or yield plastically when a force is applied.
- the coated scroll 122 may be on either the orbiting or non- orbiting scroll, or both.
- the coating 40 will wear away to ideally match the desired shape for the particular scroll compressor.
- Figure 6 shows another embodiment scroll member 200 wherein the coating material 202 is formed in a ditch 204 in the radially outer face of the scroll wrap.
- the coating material 202 preferably extends to the tip 206 of the wrap.
- the coating material does not begin for at least 360° measured from an outermost edge 207 of the wrap.
- the coatings that are most suited for this application could be generically described as a coating that will move when the coated scroll member is brought into contact with the mating surface. For purposes of this application, this would mean that when the scroll wrap is brought into contact with the opposed mating scroll wrap, the coating will move to take on the shape defined by the opposed wrap, and eliminate the gap.
- the coating could be a "conformable" coating that under the influence of pressure or relative motion from the opposed mating scroll wrap, will take on a shape defined by the mating wrap.
- the coating will typically have a bulk hardness or strength which is somewhat less than that of the mating wrap of the opposed scroll member, and for that matter, also of the material utilized to form the scroll wrap on which it is deposited.
- Composite coatings may be utilized which could be made up of two or more mechanically bonded components.
- a carbon fiberf ⁇ ll resin although this particular example would be a somewhat unlikely example.
- one or more of the coating components may have a hardness or strength equal to or greater than the scroll members, but the aggregate of the two would result in the coating having a hardness or strength which is less than that of the scroll members.
- a conformable coating would be an extrudable or deformable coating.
- This is a type of conformable coating which when brought into contact with the mating surface and under the influence of pressure and/or relative motion, plastically extrudes or flows until it takes on a shape defined by the mating surface.
- This type of coating typically does not wear or flake away.
- the coating material remains attached to the coated wrap.
- Such coatings are often of a composite type with a harder matrix material to provide structural integrity and a softer filler component to lower the bulk hardness and allow the material to flow.
- Such materials have been utilized, as an example, in screw compressors wherein a known coating was a nickel-polymer aggregate.
- a nickel "foam" is filled with a soft polymer material.
- Open metal foams may be desirable for this application.
- such forms may also have some difficulty in that parts of the metal foam may sometimes break away, which could result in undesirable abrasive debris.
- the polymer nodules provide an internal hydrostatic- type support to prevent the metal matrix from bending too much locally, which provides the benefit of good bond strength holding the deformed metal in place.
- an abradable coating is a type of coating which wears or flakes away under the influence of pressure and/or shape from the mating wrap of the opposed scroll member. Such coatings tend to be soft, and if they are formed of a composite, all of the components are typically soft. The wear debris will circulate through the rest of the compressor mechanism, and it would be undesirable to have an unduly abrasive "grit" provided by such an abradable coating.
- the above coatings are generally referred to as coatings which will change their shape upon the influence of the opposed mating wrap of the opposed scroll member. In that sense, the material of the coating will move upon contact with the wrap of the mating scroll member.
- This "changing” and “movement” can be abrasion or the type of movement without abrasion provided by a conformable coating.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006549591A JP2007518022A (en) | 2004-01-13 | 2005-01-12 | Scroll compressor with lap wall with abradable coating and load bearing surface at radially outer part |
CN2005800023869A CN101305188B (en) | 2004-01-13 | 2005-01-12 | Scroll compressor and its manufacture method |
EP05711415.9A EP1753959B1 (en) | 2004-01-13 | 2005-01-12 | Scroll compressor with wrap walls provided with an abradable coating and a load-bearing surface at radially outer locations |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/756,019 | 2004-01-13 | ||
US10/756,019 US7179067B2 (en) | 2004-01-13 | 2004-01-13 | Scroll compressor with wrap walls provided with an abradable coating and a load-bearing surface at radially outer locations |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005067519A2 true WO2005067519A2 (en) | 2005-07-28 |
WO2005067519A3 WO2005067519A3 (en) | 2006-11-23 |
Family
ID=34739732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2005/001088 WO2005067519A2 (en) | 2004-01-13 | 2005-01-12 | Scroll compressor with wrap walls provided with an abradable coating and a load-bearing surface at radially outer locations |
Country Status (5)
Country | Link |
---|---|
US (1) | US7179067B2 (en) |
EP (1) | EP1753959B1 (en) |
JP (1) | JP2007518022A (en) |
CN (1) | CN101305188B (en) |
WO (1) | WO2005067519A2 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4661801B2 (en) * | 2007-02-28 | 2011-03-30 | 株式会社デンソー | Scroll compressor and method for manufacturing the same |
US8157551B2 (en) * | 2009-02-03 | 2012-04-17 | Scrollabs Corporation | Scroll compressor with back pressure pocket receiving discharge pressure fluid |
US8167594B2 (en) * | 2009-02-03 | 2012-05-01 | Scrolllabs Corporation | Scroll compressor with materials to allow run-in |
US20100202911A1 (en) * | 2009-02-12 | 2010-08-12 | Scroll Laboratories, Inc. | Scroll-type positive displacement apparatus with plastic scrolls |
US20150004039A1 (en) * | 2013-06-28 | 2015-01-01 | Emerson Climate Technologies, Inc. | Capacity-modulated scroll compressor |
US11480178B2 (en) | 2016-04-27 | 2022-10-25 | Mark W. Wood | Multistage compressor system with intercooler |
US11686309B2 (en) | 2016-11-07 | 2023-06-27 | Mark W. Wood | Scroll compressor with circular surface terminations |
US11339786B2 (en) * | 2016-11-07 | 2022-05-24 | Mark W. Wood | Scroll compressor with circular surface terminations |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4846642A (en) | 1986-11-08 | 1989-07-11 | Wankel Gmbh | Rotary piston blower with foamed synthetic material surfaces running along roughened metal surfaces |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6121892U (en) * | 1984-07-16 | 1986-02-08 | 三菱重工業株式会社 | Scroll type fluid machine |
DE3711986A1 (en) * | 1986-04-11 | 1987-10-15 | Hitachi Ltd | SPIRAL COMPRESSOR AND METHOD FOR THE PRODUCTION THEREOF |
US5035589A (en) * | 1990-01-16 | 1991-07-30 | Carrier Corporation | Method and apparatus for reducing scroll compressor tip leakage |
JPH0466792A (en) * | 1990-07-06 | 1992-03-03 | Mitsubishi Electric Corp | Scroll fluid machine |
JP2814828B2 (en) * | 1992-03-30 | 1998-10-27 | 三菱電機株式会社 | Scroll fluid machine |
JPH0953584A (en) * | 1995-08-18 | 1997-02-25 | Tokico Ltd | Scroll type fluid machinery |
JPH0988851A (en) * | 1995-09-29 | 1997-03-31 | Ntn Corp | Manufacture of scroll member of displacement compressor |
JPH11280669A (en) * | 1998-03-25 | 1999-10-15 | Tokico Ltd | Scroll type fluid machinery |
JP2000130366A (en) * | 1998-10-27 | 2000-05-12 | Nippon Soken Inc | Scroll type compressor |
US6506037B1 (en) * | 1999-11-17 | 2003-01-14 | Carrier Corporation | Screw machine |
US6887052B1 (en) * | 2004-01-13 | 2005-05-03 | Scroll Technologies | Scroll wrap tip with abradable selectively applied coating and load-bearing surface |
-
2004
- 2004-01-13 US US10/756,019 patent/US7179067B2/en not_active Expired - Fee Related
-
2005
- 2005-01-12 EP EP05711415.9A patent/EP1753959B1/en not_active Expired - Fee Related
- 2005-01-12 CN CN2005800023869A patent/CN101305188B/en not_active Expired - Fee Related
- 2005-01-12 JP JP2006549591A patent/JP2007518022A/en not_active Ceased
- 2005-01-12 WO PCT/US2005/001088 patent/WO2005067519A2/en not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4846642A (en) | 1986-11-08 | 1989-07-11 | Wankel Gmbh | Rotary piston blower with foamed synthetic material surfaces running along roughened metal surfaces |
Also Published As
Publication number | Publication date |
---|---|
EP1753959A4 (en) | 2010-01-20 |
EP1753959A2 (en) | 2007-02-21 |
WO2005067519A3 (en) | 2006-11-23 |
EP1753959B1 (en) | 2013-10-09 |
US7179067B2 (en) | 2007-02-20 |
CN101305188A (en) | 2008-11-12 |
US20050152793A1 (en) | 2005-07-14 |
JP2007518022A (en) | 2007-07-05 |
CN101305188B (en) | 2011-06-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1709324B1 (en) | Scroll wrap tip with abradable selectively applied coating and load-bearing surface | |
EP1753959B1 (en) | Scroll compressor with wrap walls provided with an abradable coating and a load-bearing surface at radially outer locations | |
KR101073304B1 (en) | Scroll compressor | |
US6860728B2 (en) | Scroll compressor sealing | |
EP3084223B1 (en) | Compressor having sound isolation feature | |
US8167594B2 (en) | Scroll compressor with materials to allow run-in | |
US8366425B2 (en) | Compressor slider, slider preform, scroll part, and compressor | |
EP2650542B1 (en) | Scroll-type fluid machine and method and device for forming elastic coating thereon | |
US5989000A (en) | Scroll compressor with back pressure hole relief | |
JP2006510841A (en) | Gear machine with axial side plate | |
JP2012137000A (en) | Scroll compressor | |
US7284972B2 (en) | Scroll compressor with stop structure to prevent slider block movement | |
CN217813922U (en) | Pump body structure of scroll compressor and compressor | |
WO2013108866A1 (en) | Tip seal and scroll compressor utilizing same | |
JP6599099B2 (en) | Scroll fluid machinery | |
JPH0392590A (en) | Scroll type compressor | |
WO2015048674A1 (en) | Powder metal scrolls with modified tip designs | |
EP1983196A1 (en) | Scroll compressor with stop structure to prevent slider block movement | |
US20050281697A1 (en) | Scroll compressor with recess on crankcase or orbiting scroll | |
JPH0392591A (en) | Scroll type compressor | |
JP2007218206A (en) | Fluid machine | |
JP2003035284A (en) | Surface coating method for member of scroll type pump |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A2 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A2 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2006549591 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200580002386.9 Country of ref document: CN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2005711415 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: DE |
|
WWP | Wipo information: published in national office |
Ref document number: 2005711415 Country of ref document: EP |