EP1826410A2 - Ventil für eine Verdichteranordnung - Google Patents

Ventil für eine Verdichteranordnung Download PDF

Info

Publication number
EP1826410A2
EP1826410A2 EP07250579A EP07250579A EP1826410A2 EP 1826410 A2 EP1826410 A2 EP 1826410A2 EP 07250579 A EP07250579 A EP 07250579A EP 07250579 A EP07250579 A EP 07250579A EP 1826410 A2 EP1826410 A2 EP 1826410A2
Authority
EP
European Patent Office
Prior art keywords
sump
valve
separator
space
liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07250579A
Other languages
English (en)
French (fr)
Other versions
EP1826410A3 (de
Inventor
Norman Philip Lowe
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.)
Ingersoll Rand Co
Original Assignee
Ingersoll Rand Co
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 Ingersoll Rand Co filed Critical Ingersoll Rand Co
Publication of EP1826410A2 publication Critical patent/EP1826410A2/de
Publication of EP1826410A3 publication Critical patent/EP1826410A3/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/026—Lubricant separation

Definitions

  • the present invention relates to a valve configured for use in a compressor assembly. More particularly, the present invention relates to a valve configured to provide selective fluid communication between a separator and a sump of a compressor.
  • Rotary screw compressors typically include at least two oil-flooded intermeshing rotors that rotate in unison to create a flow of compressed gas.
  • the rotors are flooded in a lubricant such as oil to lubricate and cool the rotors.
  • a lubricant such as oil to lubricate and cool the rotors.
  • the oil becomes entrained in the flow of compressed gas.
  • it is undesirable for oil to be entrained in the compressed gas because the oil can damage equipment that utilizes the compressed gas.
  • the failure to recover and reuse the oil would require the constant addition of oil to replenish the compressor system. Therefore, before the compressed gas is transported to the equipment, a substantial amount of the entrained oil is removed from the compressed gas flow using an oil separator.
  • the separated oil can be transported to a sump for storage and reuse in the compressor.
  • the separated oil can be transported to an oil cooler to cool the oil, and/or an oil filter to filter the oil before it is directed back to the compressor for reuse.
  • the invention provides a compressor assembly including a separator having a separator space.
  • the separator is operable to remove a liquid from a mixture of the liquid and a gas.
  • the assembly includes a sump having a sump space that is positioned to receive the liquid from the separator.
  • a valve is positioned between the separator space and the sump space and is moveable to a closed position in response to a predetermined flow between the sump space and the separator space.
  • a biasing member is positioned to bias the valve toward an open position
  • the invention provides a method of operating a compressor assembly having a sump in fluid communication with a separator.
  • the method includes passing a mixture of a liquid and a gas into the separator.
  • the mixture defines a separator pressure.
  • the method also includes separating a substantial amount of the liquid from the mixture and passing the liquid to the sump to define a sump pressure.
  • the method also includes biasing a valve toward an open position, and blocking a substantial amount of the liquid from passing into the sump by moving the valve toward a closed position when the difference between the separator pressure and the sump pressure exceeds a predetermined value.
  • the invention provides a valve that includes a chamber and a sump.
  • the chamber is positioned to receive a flow of fluid including a liquid and a gas.
  • the sump is adapted to contain the liquid.
  • the valve also includes a valve housing and a valve member.
  • the valve housing is at least partially disposed within the sump to define a valve space in fluid communication with the chamber.
  • the valve housing defines an aperture that provides fluid communication between the valve space and the sump.
  • the valve member at least partially disposed within the valve housing and is movable between an open position in which liquid flows from the chamber to the sump and a closed position in which flow between the chamber and the sump is inhibited.
  • a biasing member biases the valve member toward the open position, and the valve member is moveable toward the closed position in response to a pressure differential between the sump and the chamber that is greater than a predetermined value.
  • Fig. 1 is a perspective view of a compressor assembly employing the present invention
  • Fig. 2 is a section view of a portion of a compressor assembly including a valve embodying the present invention in an open position;
  • Fig. 3 is a perspective section view of a portion of the compressor assembly, including the valve of Fig. 2 in a closed position.
  • Fig. 1 illustrates a compressor assembly 10 that includes a compressor core 12, a sump 14 and a separator 16.
  • the compressor core 12 attaches to the sump 14 and includes a drive member 18 and a compressor 20, such as an oil flooded rotary screw compressor, a centrifugal compressor or any other suitable compressor design.
  • the illustrated sump 14 includes support members 21 that are attached to the sump 14 to support the sump 14 above a foundation. In other constructions, the sump 14 is set upon a foundation to support the compressor assembly 10.
  • the illustrated compressor 20, the sump 14, and the separator 16 include portions that are integrally formed, such as by casting.
  • the compressor assembly 10 can be formed by coupling the compressor 20 and the separator 16 to the sump 14, such as by welded or bolted connections.
  • the sump includes a sump housing 24 having at least one wall 25, a base 26 and a cover 28.
  • the walls 25, base 26 and cover 28 attach to one another to substantially enclose a sump space 30.
  • the walls 25, base 26, and cover 28 are permanently attached to one another (e.g., welded), or integrally formed as a single piece, or a combination thereof. In these constructions, separation of the components is generally not possible without destroying or damaging one or more of the components.
  • the sump 14 can be manufactured from steel, aluminum or any suitable material and can be formed using any suitable method, such as casting, molding, forging, welding, brazing, bolting, and the like.
  • the sump space 30 contains a liquid such as oil, water, refrigerant, coolant, etc.
  • the cover 28 is a substantially flat component that extends to, and connects each wall 25 to substantially enclose the top of the sump space 30.
  • the cover 28 defines a component support area that receives the compressor 20, the drive member 18, and the separator 16.
  • the cover 28 provides structural support for the components it supports.
  • the cover 28 includes a cover aperture 32 that extends through the cover 28. While the illustrated cover aperture 32 is a circular aperture, it should be understood that the cover aperture 32 can be virtually any shape.
  • the cover 28 also includes a portion 34 adjacent to the cover aperture 32 with an increased thickness to provide additional stiffness to the cover 28 in the area adjacent the cover aperture 32.
  • the base 26 is a substantially flat component that extends to, and connects each wall 25 to substantially enclose the bottom of the sump space 30.
  • the illustrated base 26 includes a base aperture 36 extending through the base 26 and positioned directly below the cover aperture 32 such that the centers of the base aperture 36 and the cover aperture 32 lie on a common axis that is substantially normal to the base 26.
  • the illustrated base aperture 36 is substantially cylindrical and includes a threaded portion 38.
  • the illustrated base 26 includes a portion 40 with an increased thickness that is adjacent the base aperture 36 to provide additional stiffness and thread length to the base 26 in the area adjacent the base aperture 36. In other constructions, other base aperture shapes may be employed.
  • the cover 28 at least partially defines a separator housing 42 that extends from the cover 28 to at least partially form a separator space 44.
  • the separator space 44 is positioned directly above the cover aperture 32.
  • the illustrated separator housing 42 is integrally formed as part of the cover 28.
  • the separator housing 42 can be integrally formed as part of the cover 28 by casting, molding, forging, or any suitable forming method.
  • the separator housing 42 can include a separate piece attached to the cover using any suitable connection, such as a welded, brazed or bolted connections.
  • the valve housing 48 includes a first end 56, a second end 58 and a plug 60 coupled to the first end 56.
  • the plug 60 includes a blind bore 62, a recess 64, and an outer threaded portion 66 that engages the threads 38 of the base aperture 36 to couple the valve housing 48 to the base 26.
  • the illustrated plug 60 also includes an O-ring seal 68 positioned between the plug 60 and the base 26 to inhibit the liquid contained within the sump space 30 from leaking through the base aperture 36.
  • the valve housing 48 is integrally machined as a single piece with the plug 60.
  • the valve housing 48 can be cast, forged or injection molded as a single piece with the plug 60.
  • the valve housing 48 and the plug 60 are fabricated using welding, brazing, soldering or other joining techniques.
  • the valve housing 48 extends through the cover aperture 32 such that the second end 58 of the valve housing 48 is positioned on the separator side of the cover aperture 32.
  • the second end 58 connects the cover 28 at the cover aperture 32 to complete the connection of the valve housing 48 to the sump 14.
  • the second end 58 of the valve housing 48 includes an undercut configured to receive an O-ring seal 70.
  • the O-ring seal 70 inhibits fluid flow from the separator space 44 to the sump space 30 without traveling through the valve housing 48.
  • the valve housing 48 defines at least one valve housing aperture 72 that provides fluid communication between the separator space 44 and the sump space 30.
  • the illustrated valve housing 48 includes two generally circular valve housing apertures 72.
  • a single hole or more than two holes can be employed.
  • one construction employs several rows of small holes that extend around the valve housing 48.
  • the holes may be other shapes or may include holes of several sizes.
  • the valve housing 48 also defines a valve seat 74 positioned between the valve housing apertures 72 and the second end 58 of the valve housing 48.
  • the illustrated valve seat 74 is integrally-formed with the valve housing 48 and can be machined, cast, forged or injection molded integrally with the valve housing 48. In other constructions the valve seat 74 can be a separate element coupled to the valve housing 48 using any suitable connection, such as welded, brazed, bolted, or threaded connections and the like.
  • the valve 46 includes a valve member 75, a rod 76, and a biasing member 77, disposed substantially within the valve housing 48.
  • the rod 76 includes a first end 78, a second end 79 and a shoulder 80 positioned between the first end 78 and the second end 79.
  • the first end 78 includes a portion that engages the blind bore 62 of the plug 60 to couple the rod 76 to the plug 60.
  • the rod can be coupled to the plug using any suitable connection, such as a threaded, welded, brazed, or shrink-fit connection.
  • the rod 76 is integrally-formed with the plug 60 by machining, casting, forging or other forming techniques.
  • the second end 79 of the rod 76 extends through the cover aperture 32 and includes a threaded portion that receives a nut 82 and a plate 84.
  • the nut 82 is threaded onto the second end 79 of the rod 76 to couple the plate 84 to the rod 76.
  • the plate 84 can be coupled to the rod 76 using a welded or brazed connection.
  • the plate can be integrally formed with the rod, such as by machining, casting, forging, or any other suitable process.
  • the valve member 75 defines a valve member aperture 86 sized to receive the rod 76 while still allowing the valve member 75 to slide along the portion of the rod 76 below the shoulder 80. However, the shoulder 80 of the rod 76 prevents the valve member 75 from sliding further along the rod 76 toward the second end 79. Furthermore, the valve member 75 is sized such that the valve member 75 and the inside of the valve housing 48 cooperate to define an annular passage 81. However, the valve member 75 is sized to engage the valve seat 74 which prevents further sliding of the valve member 75 along the rod 76 toward the first end 78 of the rod 76.
  • the illustrated valve member 75 also includes a plurality of bleed holes 88. While at least two circular bleed holes 88 are illustrated, the valve member 75 can include fewer than two or more than two bleed holes 88 in any suitable location or shape.
  • the valve member 75 includes a boss 90 and a recess 92.
  • the boss 90 extends from the bottom of the valve member 75 to further define the recess 92.
  • the illustrated boss 90 is integrally formed with the valve member 75, such as by machining, casting, molding, or any other suitable method. In another construction, the boss can be coupled to the valve element using a welded or brazed connection.
  • the recess 92 can be formed in the valve member 75 by any suitable method, such as by machining, stamping, casting, or forging.
  • the biasing member 77 is configured to bias the valve member 75 towards the shoulder 80.
  • the illustrated biasing member 77 includes a coil spring disposed around the rod 76 and coupled to the valve member 75 and the plug 60.
  • the boss 90 and the recess 92 of the valve member 75 define a guide that enhances the connection between the biasing member 77 and the valve member 75.
  • the recess 64 in the plug 60 engages the opposite end of the biasing member 77 and enhances the connection between the biasing member 77 and the plug 60.
  • valve 46 allows for the entire valve 46 to be received through the base and cover apertures 36, 32. Therefore, the valve 46 can be assembled outside of the sump space 30 and installed through the base and cover apertures 36, 32 as a single assembly.
  • the compressor core 12 operates to create a flow of compressed gas, typically air.
  • the compressed gas includes some entrained lubricant that together defines a mixture.
  • the mixture enters the separator space 44 and at least a portion of the liquid is separated from the flow of compressed gas.
  • the separated liquid drains along the inside of the separator housing 42 towards the cover aperture 32.
  • the plate 84 substantially separates any gas vortices from the flow of liquid to reduce re-entrainment of the liquid in the compressed gas.
  • the valve member 75 is in the open position, as illustrated in Fig. 2, to allow the liquid to flow from the separator space 44 to the valve housing 48, through the annular flow path 81, through the valve housing apertures 72, and into the sump space 30.
  • the separator space 44 and the sump space 30 are each under a substantially uniform pressure.
  • the mixture of the liquid and the compressed gas in the separator space 44 defines a separator pressure
  • the liquid in the sump space 30 defines a sump pressure.
  • the flow path between the separator space 44 and the sump space 30 causes a slight difference between the separator pressure and the sump pressure.
  • the sump pressure will be slightly less than the separator pressure.
  • the bleed holes 88 allow only a limited amount of flow to pass from the separator space 44 to the sump space 30. After the flow of the liquid exiting the sump 14 slows or stops, the limited flow through the bleed holes 88 eventually reduces the differential pressure between the separator space 44 and the sump space 30.
  • the biasing member 77 will begin to move the valve member 75 along the rod 76 toward the shoulder 80, or from the closed position toward the open position of Fig. 2.
  • the stiffness of the biasing member 77 determines the differential pressure at which the valve member 75 moves from the closed position to the open position.
  • the stiffness of the biasing member 77 determines the pressure differential that causes the valve member 75 to move from the open position to the closed position. Therefore, the biasing member 77 can be selected to determine the differential pressures that will cause the valve member 75 to move between the open position and the closed position.
  • valve 46 configured for use in a compressor assembly 10 and movable between an open position and a closed position in response to a predetermined flow or differential pressure between the separator space 44 and the sump space 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
EP07250579A 2006-02-24 2007-02-13 Ventil für eine Verdichteranordnung Withdrawn EP1826410A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/362,216 US20070201991A1 (en) 2006-02-24 2006-02-24 Valve for a compressor assembly

Publications (2)

Publication Number Publication Date
EP1826410A2 true EP1826410A2 (de) 2007-08-29
EP1826410A3 EP1826410A3 (de) 2009-04-15

Family

ID=38179458

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07250579A Withdrawn EP1826410A3 (de) 2006-02-24 2007-02-13 Ventil für eine Verdichteranordnung

Country Status (3)

Country Link
US (1) US20070201991A1 (de)
EP (1) EP1826410A3 (de)
CN (1) CN101042141B (de)

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1177262A (en) * 1915-04-27 1916-03-28 Lewis Grant O'donnell Air-filter.
FR1069412A (fr) * 1953-01-03 1954-07-07 Hydrovane Compressor Séparateurs d'huile pour les pompes à air ou autres gaz et applications similaires
US3252270A (en) * 1962-10-01 1966-05-24 Pall Corp Apparatus and method for removal of oil entrained in air
US3291385A (en) * 1965-06-01 1966-12-13 Gardner Denver Co Receiver-separator unit for liquidinjected compressor
US3386230A (en) * 1966-12-27 1968-06-04 Donaldson Co Inc Liquid and gas separator
US3722187A (en) * 1969-03-21 1973-03-27 Worthington Corp Liquid and gas separating assembly
US3732669A (en) * 1971-09-27 1973-05-15 Separation & Recovery Systems Fuel gas separator
US3876401A (en) * 1972-12-18 1975-04-08 Richard A Sturgill Air compressor support package
US4135865A (en) * 1975-08-06 1979-01-23 Diesel Kiki Co., Ltd. Rotary vane compressor with outlet check valve for start-up pressure on lubricant system
US4260402A (en) * 1979-05-17 1981-04-07 Ingersoll-Rand Company Housing means for defining air/oil separator and oil reservoir assembly
US4362475A (en) * 1981-03-16 1982-12-07 Joy Manufacturing Company Compressor inlet valve
US4478054A (en) * 1983-07-12 1984-10-23 Dunham-Bush, Inc. Helical screw rotary compressor for air conditioning system having improved oil management
US4662190A (en) * 1985-12-10 1987-05-05 Tischer James C Integral slide valve-oil separator apparatus in a screw compressor
US5947214A (en) * 1997-03-21 1999-09-07 Baker Hughes Incorporated BIT torque limiting device
US6095765A (en) * 1998-03-05 2000-08-01 Carrier Corporation Combined pressure ratio and pressure differential relief valve
GB2344856B (en) * 1998-12-18 2002-12-18 Ingersoll Rand Company Ltd Method of operating compressor
US6319296B1 (en) * 1999-08-13 2001-11-20 Alliedsignal Truck Brake Systems Company Air system bypass for oil separator
US6499965B2 (en) * 2001-02-02 2002-12-31 Ingersoll-Rand Company Air compressor system and an air/oil cast separator tank for the same
JP2004044518A (ja) * 2002-07-12 2004-02-12 Calsonic Compressor Seizo Kk 気体圧縮機
US7168683B2 (en) * 2004-05-24 2007-01-30 Illinois Tool Works Inc Oil drain valve

Also Published As

Publication number Publication date
EP1826410A3 (de) 2009-04-15
CN101042141A (zh) 2007-09-26
US20070201991A1 (en) 2007-08-30
CN101042141B (zh) 2013-04-24

Similar Documents

Publication Publication Date Title
EP1418337B1 (de) Spiralverdichter
JP2005036801A (ja) スクロール式圧縮機
KR101096870B1 (ko) 댐퍼 기능을 가지는 체크밸브가 내장된 제어밸브
EP3311030B1 (de) Kompressor mit kanalmontierter gasfilter
US20070283717A1 (en) Expansion valve
US6409804B1 (en) Separator tank assembly for a fluid compressor
CA2464509A1 (en) Reciprocating compressor
GB2291681A (en) Scroll compressor
EP3351755B1 (de) Ölsystem mit verstopfungsresistentem ölfilter
US10094254B2 (en) Temperature sensitive valve mechanism
CN115199375A (zh) 滤清器总成及工程机械
EP1908957B1 (de) Kompressor der spiralbauart
EP1826410A2 (de) Ventil für eine Verdichteranordnung
JP4282637B2 (ja) スクロール型圧縮機
EP3699432A1 (de) Ansaugöffnung mit eingegossener versetzt befestigter spirale
JPH0571651A (ja) 脱圧弁装置
TWI734086B (zh) 改進的最小壓力閥、壓縮機和用於維護此種閥的方法
JP5014363B2 (ja) スクロール型圧縮機
KR101805783B1 (ko) 다공 오일 흐름 콘트롤러
CN210141237U (zh) 一种排气机构
CN210531645U (zh) 速关阀及其阀芯
JP5010295B2 (ja) 密閉型ロータリ圧縮機
WO2016140672A1 (en) Oil pan with integral lube suction and stiffening passage
KR100215154B1 (ko) 피스톤식 압축기의 기동쇼크 완화장치
JPS6245095Y2 (de)

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

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

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

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

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

AKX Designation fees paid
STAA Information on the status of an ep patent application or granted ep patent

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

REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

18D Application deemed to be withdrawn

Effective date: 20090901