EP2236833A1 - Schraubenverdichter - Google Patents

Schraubenverdichter Download PDF

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Publication number
EP2236833A1
EP2236833A1 EP08867336A EP08867336A EP2236833A1 EP 2236833 A1 EP2236833 A1 EP 2236833A1 EP 08867336 A EP08867336 A EP 08867336A EP 08867336 A EP08867336 A EP 08867336A EP 2236833 A1 EP2236833 A1 EP 2236833A1
Authority
EP
European Patent Office
Prior art keywords
rotor
seal portion
screw
gate rotor
shaft
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Withdrawn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
EP08867336A
Other languages
English (en)
French (fr)
Other versions
EP2236833A4 (de
Inventor
Hideyuki Gotou
Nozomi Gotou
Hideki Fujiwara
Harunori Miyamura
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.)
Daikin Industries Ltd
Original Assignee
Daikin 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 Daikin Industries Ltd filed Critical Daikin Industries Ltd
Publication of EP2236833A1 publication Critical patent/EP2236833A1/de
Publication of EP2236833A4 publication Critical patent/EP2236833A4/de
Withdrawn legal-status Critical Current

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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
    • F04C18/48—Rotary-piston pumps with non-parallel axes of movement of co-operating members
    • F04C18/50—Rotary-piston pumps with non-parallel axes of movement of co-operating members the axes being arranged at an angle of 90 degrees
    • F04C18/52—Rotary-piston pumps with non-parallel axes of movement of co-operating members the axes being arranged at an angle of 90 degrees of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • 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
    • F01C17/02—Arrangements for drive of co-operating members, e.g. for rotary piston and casing of toothed-gearing type
    • 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
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
    • 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
    • F04C27/004—Radial sealing elements specially adapted for intermeshing-engagement type pumps, e.g. gear pumps
    • 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
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/0078—Fixing rotors on shafts, e.g. by clamping together hub and shaft
    • 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
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • 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
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • 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
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings
    • 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
    • F04C2240/00—Components
    • F04C2240/50—Bearings
    • F04C2240/52—Bearings for assemblies with supports on both sides
    • 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
    • F04C2240/00—Components
    • F04C2240/60—Shafts
    • F04C2240/603—Shafts with internal channels for fluid distribution, e.g. hollow shaft
    • 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
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/16—Wear
    • 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
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/17—Tolerance; Play; Gap
    • 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
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/58—Valve parameters
    • 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
    • F04C27/007—Sealings for working fluid between radially and axially moving parts

Definitions

  • the present invention relates to a screw compressor for compressing a refrigerant gas or other gases.
  • a screw compressor in which, as shown in an enlarged sectional view of Fig. 4 , a screw rotor 102 is housed in a cylinder 110 of a casing 101, and a gate rotor 103 is engaged with the screw rotor 102, where a gas is compressed by a compression chambers defined by mutual engagement of the screw rotor 102 and the gate rotor 103 ( JP 3731399 A ).
  • an object of the present invention is to provide a screw compressor which can be improved in compression performance by reducing leakage of the gas through a space between the tooth portions of the gate rotor.
  • a screw compressor according to the present invention comprises:
  • the seal portion is placed on the other surface side of the gate rotor, and the seal portion blocks the space between neighboring tooth portions. Therefore, the seal portion blocks the gas within each of the compression chambers from passing through the space between the neighboring tooth portions and going out from the one surface of the gate rotor to the other surface side.
  • the one surface of the seal portion faced to the seal surface with the gate rotor interposed therebetween has a shape substantially corresponding to a shape of part of the seal surface faced to the seal portion with the gate rotor interposed therebetween. Therefore, by making the shape of the seal portion corresponding to the shape of the seal surface, gas leakage can be prevented efficiently.
  • a material of the seal portion is polyphenylene sulfide resin.
  • the seal portion is placed on the other surface side of the gate rotor and the seal portion blocks the space between neighboring tooth portions, gas leakage from the space between neighboring tooth portions of the gate rotor can be reduced so that the compression performance can be improved.
  • Fig. 1 is a cross-sectional view showing an embodiment of the screw compressor according to the present invention
  • Fig. 1 is a cross-sectional view showing an embodiment of a screw compressor according to the invention.
  • This screw compressor is a single screw compressor, which includes a casing 1 having a cylinder 10, a cylindrical-shaped screw rotor 2 fitted to the cylinder 10, and a gate rotor 3 engaged with the screw rotor 2.
  • the screw rotor 2 has, on its outer peripheral surface, a plurality of spiral-shaped groove portions 21.
  • the gate rotor 3 is disc-shaped and has, on its outer peripheral surface, a plurality of tooth portions 31 in a gear-like form.
  • the groove portions 21 of the screw rotor 2 and the tooth portions 31 of the gate rotor 3 are engaged with each other, respectively.
  • compression chambers C are defined. That is, these compression chambers C are spaces defined by the groove portions 21 of the screw rotor 2, the tooth portions 31 of the gate rotor 3, and an inner surface of the cylinder 10 of the casing 1.
  • the gate rotor 3 is placed in one pair on the right and left hands of the screw rotor 2 in left-and-right point symmetry with respect to a shaft 2a of the screw rotor 2.
  • the casing 1 has a through hole 12 extending through the cylinder 10, and the gate rotor 3 is coming into the cylinder 10 through this through hole 12.
  • the screw rotor 2 rotates in an arrow R direction about the shaft 2a, and along with this rotation of the screw rotor 2, the gate rotor 3 rotates to compress the gas within each of the compression chambers C.
  • the screw rotor 2 is rotated by a (not shown) motor housed in the casing 1.
  • a seal surface 11 of the casing 1 faces the compression chambers C-side of one surface 30 of the gate rotor 3.
  • left side of the screw rotor 2 in drawing-sheet is assumed as the suction side for sucking the gas to the compression chambers C, while right side of the screw rotor 2 in drawing-sheet is assumed as the discharge side for discharging the gas from the compression chambers C.
  • the one surface 30 of the gate rotor 3 forms part of inner surface of each of the compression chambers C. Between the seal surface 11 of the casing 1 and the one surface 30 of the gate rotor 3 is a gap of, for example, about 60 ⁇ m.
  • width on a gas-discharge side of the screw rotor 2 is larger than width on the gas-suction side of the screw rotor 2.
  • width on the gas-discharge side of the screw rotor 2 may be equal to width on the gas-suction side of the screw rotor 2.
  • seal portion 5 On the other surface 32 side of the gate rotor 3 is placed a seal portion 5. That is, the seal portion 5 is faced to the seal surface 11 with the gate rotor 3 and the base portion 41 interposed therebetween. The seal portion 5 blocks the space S between neighboring tooth portions 31.
  • the one surface 50 of the seal portion 5 may be formed into a shape different from that of the seal surface 11.
  • the seal portion 5 may be provided also on the suction side in the shaft 2a direction of the screw rotor 2 than the plane P.
  • the seal portion 5 may be provided as part of the casing 1.
  • the material of the seal portion 5 may be other than polyphenylene sulfide resin.
  • the quantity of the gate rotor 3 may be increased or decreased.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP08867336.3A 2007-12-28 2008-12-26 Schraubenverdichter Withdrawn EP2236833A4 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2007340540 2007-12-28
JP2008328297A JP4400689B2 (ja) 2007-12-28 2008-12-24 スクリュー圧縮機
PCT/JP2008/073759 WO2009084641A1 (ja) 2007-12-28 2008-12-26 スクリュー圧縮機

Publications (2)

Publication Number Publication Date
EP2236833A1 true EP2236833A1 (de) 2010-10-06
EP2236833A4 EP2236833A4 (de) 2014-12-17

Family

ID=40824354

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08867336.3A Withdrawn EP2236833A4 (de) 2007-12-28 2008-12-26 Schraubenverdichter

Country Status (5)

Country Link
US (1) US20100278678A1 (de)
EP (1) EP2236833A4 (de)
JP (1) JP4400689B2 (de)
CN (1) CN101910639B (de)
WO (1) WO2009084641A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9057373B2 (en) 2011-11-22 2015-06-16 Vilter Manufacturing Llc Single screw compressor with high output
CN110446858B (zh) * 2017-03-21 2021-08-03 大金工业株式会社 单螺杆压缩机

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2158933A (en) * 1937-07-26 1939-05-16 Paul E Good Rotary compressor
US3133695A (en) * 1960-06-22 1964-05-19 Zimmern Fernand Compressors
FR2148677A5 (de) * 1971-07-30 1973-03-23 Zimmern Bernard
JPS5629119B2 (de) * 1974-04-03 1981-07-06
JPS5911759B2 (ja) * 1974-04-15 1984-03-17 北越工業 （株） 回転方向と直径方向とに自由に全体が浮遊的変位可能に組立てられたピニオンの歯を有するグロボイドウオ−ム型圧縮機及び膨張機
US4227867A (en) * 1978-03-06 1980-10-14 Chicago Pneumatic Tool Company Globoid-worm compressor with single piece housing
JPS6014952Y2 (ja) * 1979-07-11 1985-05-11 株式会社日本自動車部品総合研究所 ウオ−ム型圧縮機
JPH0634636Y2 (ja) * 1987-05-27 1994-09-07 ダイキン工業株式会社 圧縮機の保護装置
US5032068A (en) * 1988-10-25 1991-07-16 Kurherr Waldemar H Displacement type rotary system steam turbine engine
JP3216281B2 (ja) * 1992-12-14 2001-10-09 松下電器産業株式会社 歯車ポンプ
JPH0959592A (ja) * 1995-08-29 1997-03-04 Denso Corp シール部材
JPH10176682A (ja) * 1996-12-17 1998-06-30 Sanyo Electric Co Ltd スクロール型圧縮機
JP3731399B2 (ja) 1999-08-30 2006-01-05 ダイキン工業株式会社 スクリュー圧縮機
JP4211871B2 (ja) * 2007-05-23 2009-01-21 ダイキン工業株式会社 スクリュー圧縮機

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
No further relevant documents disclosed *
See also references of WO2009084641A1 *

Also Published As

Publication number Publication date
CN101910639B (zh) 2012-11-14
JP2009174523A (ja) 2009-08-06
JP4400689B2 (ja) 2010-01-20
CN101910639A (zh) 2010-12-08
US20100278678A1 (en) 2010-11-04
WO2009084641A1 (ja) 2009-07-09
EP2236833A4 (de) 2014-12-17

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