EP3080455A1 - Compresseur - Google Patents

Compresseur

Info

Publication number
EP3080455A1
EP3080455A1 EP14821504.9A EP14821504A EP3080455A1 EP 3080455 A1 EP3080455 A1 EP 3080455A1 EP 14821504 A EP14821504 A EP 14821504A EP 3080455 A1 EP3080455 A1 EP 3080455A1
Authority
EP
European Patent Office
Prior art keywords
compressor
bearing
lubricant
radial bearing
drive 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.)
Granted
Application number
EP14821504.9A
Other languages
German (de)
English (en)
Other versions
EP3080455B1 (fr
Inventor
Wolfgang SANDKÖTTER
Bernd KWIATKOWSKI
Dmytro Zaytsev
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.)
GEA Refrigeration Germany GmbH
Original Assignee
GEA Refrigeration Germany GmbH
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 GEA Refrigeration Germany GmbH filed Critical GEA Refrigeration Germany GmbH
Publication of EP3080455A1 publication Critical patent/EP3080455A1/fr
Application granted granted Critical
Publication of EP3080455B1 publication Critical patent/EP3080455B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • 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
    • F04C29/0085—Prime movers
    • 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
    • F04C29/021—Control systems for the circulation of the lubricant
    • 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
    • F04C2240/40—Electric motor
    • 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
    • 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
    • F04C2240/601—Shaft flexion

Definitions

  • the present invention relates to a screw compressor according to the preamble of patent claim 1.
  • Such screw compressors are used in many applications because their construction is robust and the achievable efficiency is high.
  • As a drive device for the actual compression device for example, two intermeshing
  • Compressor screws or screw rotor has, is usually an electric motor
  • Semi-hermetic compact screw compressor can be formed, are usually stored on the fly.
  • the compressor rotor i. a first compressor screw
  • the motor rotor i. the rotor of the electric motor
  • a common shaft drive shaft
  • CONFIRMATION COPY Motor speed resonances may occur that can cause the motor rotor to start up to the motor stator.
  • EP 1 348 077 A1 discloses a compressor which has a third radial bearing point in the form of a roller bearing at the end of the shaft on the motor side.
  • the motor of the compressor is mounted on both sides by means of rolling bearings. Due to the three bearings, however, there is an overdetermination of the position of the drive shaft, which can only be compensated by the fact that located between the first radial bearing and the third radial bearing portion of the drive shaft between the radial bearings occurring
  • Alignment error is compensated. This is realized by a flexurally elastic portion of the drive shaft.
  • Solved refrigerant comprising an electric motor with a rotor and a stator, and a drive shaft and a compression device with (at least) one
  • Compressor screw or (at least) has a screw rotor, wherein the
  • Compressor screw and the rotor of the electric motor are arranged on or on the drive shaft.
  • the drive shaft is rotatably supported by means of a first, a second and a third radial bearing and the first radial bearing is arranged between the rotor of the electric motor and the compressor screw.
  • the second radial bearing is on a side of the compressor screw opposite the first radial bearing
  • the third radial bearing is on a first radial bearing
  • the first Radial bearing and the second radial bearing is each formed as a rolling bearing, and the third radial bearing is designed as a plain bearing.
  • the formation of the third bearing as a sliding bearing ensures a corresponding clearance at the bearing itself, so that the position overdetermination of the drive shaft, which is due to the storage of the same in three points, can be compensated without additional bending elasticity of the drive shaft or other compensating measures , while the two bearings provide a positionally accurate mounting of the drive shaft.
  • FIG. 1 is a sectional view of an exemplary embodiment of a compressor according to the invention.
  • FIG. 2 is an enlarged view of a portion of the compressor of FIG .. 1
  • a possible embodiment of a compressor according to the invention more specifically a screw compressor 10 according to the invention, which is also referred to below as a compressor 10, shown.
  • the compressor 10 has a housing 12 and an electric motor 14 arranged in the housing 12.
  • the electric motor 14 has a rotor 16 and a stator 18.
  • the screw compressor 10 has a drive shaft 20 and a compression device 22 with a first and a second intermeshing compressor screw and a first and a second intermeshing screw rotor 24 and 26, wherein the first compressor screw 24 and the rotor 16 of the electric motor 14 at or on the Drive shaft 20 are arranged.
  • the drive shaft 20 is thus rotationally driven by the electric motor 14 and simultaneously drives the compacting device 22.
  • the compressor according to the invention can only one
  • the drive shaft 20 is rotatably supported by a first, a second and a third radial bearing 27, 28 and 30 in the compressor 10, wherein the first radial bearing 27 is disposed between the rotor 16 of the electric motor 12 and the first compressor screw 24.
  • the second radial bearing 28 is arranged on a side of the first compressor screw 24 opposite the first radial bearing 27, and the third radial bearing 30 is arranged on a side of the rotor 16 of the electric motor 12 opposite the first radial bearing 27.
  • the third radial bearing 30 is formed as a sliding bearing (here as a sliding bearing with fluid friction or hydrodynamic sliding bearing, in alternative embodiments but also as a dry-running sliding bearing).
  • the third radial bearing 30, which is also referred to below as sliding bearing 30, communicates with a lubricant supply 32 in the form of an oil supply channel and a lubricant discharge 34 in the form of an oil return channel.
  • the lubricant supply 32 is further connected to a first volume (oil distribution chamber, not shown in the figures), which is acted upon by a first pressure, in the possible embodiment described here with a compression end pressure of the compressor in combination.
  • the lubricant discharge 34 is further connected to a second volume (not shown in the figures), which is at a second pressure, in the possible embodiment described here about a suction pressure of the compressor 10 is acted upon in combination.
  • the second volume is a closed compression work space of the
  • Compressor 10 i. the working space of the compressor 10, where the suction has already ended and the compression process has just begun. In this working space, the pressure is almost equal to the suction pressure.
  • This design provides for a supply of lubricant under relatively high pressure, so that the storage as well as possible and friction, ie with a closed lubricant film between the sliding bearing 30 and the drive shaft 20, can be done.
  • Applying the lubricant discharge 34 at a relatively low pressure provides for a reliable discharge of the lubricant, which in the presently described embodiment is formed by the oil which also uses the compressor 10 as a lubricant
  • the sliding bearing 30 is arranged in a bearing receiving bush 36, which is arranged at least partially in the housing 12.
  • the bearing receiving socket 36 is arranged parallel and concentric with the drive shaft 20.
  • the bearing receiving socket 36 has a first end 38, through which the drive shaft 20 extends therethrough, and a second end 40, which is opposite to the first end 38.
  • the bearing receptacle 36 is at its first as well as at its second end 38, 40 against the environment, i. the interior of the housing 12, sealed off, the
  • Radial shaft seal 46 takes place.
  • a second cover 48 is arranged for sealing, which is optionally attached to the second end 40 using suitable sealing materials.
  • the second end may be formed closed, e.g. the bearing receiving socket 36 may alternatively be formed, for example, in the form of a blind hole or a cylinder closed on one side.
  • the sliding bearing 30 is arranged sealed against the environment, which means that no lubricant can escape to the environment.
  • the compressor 10 has for collecting and targeted discharge of the sliding bearing lubricant in the presently described embodiment within the bearing receiving socket 36 arranged on the lubricant collecting chamber 50 which communicates with the lubricant discharge 34 in
  • the lubricant collecting space is in fluid communication with the sliding bearing 30 or is open against the sliding bearing 30 in order to be able to absorb lubricant of the sliding bearing 30 unhindered, while it is sealed against the environment analogously to the sliding bearing 30.
  • the sealing against the environment takes place, as well as for the sliding bearing 30, through the first cover 42 together with the radial shaft seal 46 and the second cover 48.
  • the lubricant collecting chamber 50 is accordingly formed by an inner wall 52 of the bearing receiving socket 36 and the first and second covers 42, 48 limited, which are arranged at the radial ends of the bearing receiving socket 36.
  • the lubricant deflation chamber 50 can also be arranged outside the bearing receiving bush 36 and, for example, with the sliding bearing 30 be connected via a channel.
  • the sliding bearing 30 By using the sliding bearing 30 with fluid friction is provided for the lowest possible heat generation in the field of storage.
  • the lubricant can additionally be collected in a targeted manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

L'invention concerne un compresseur à vis (10), destiné à comprimer un fluide frigorigène, qui comporte un moteur électrique (14) possédant un rotor (16) et un stator (18), ainsi qu'un arbre d'entraînement (20) et un dispositif de compression (22) avec une vis de compresseur (24), la vis de compresseur (24) ainsi que le rotor (16) du moteur électrique (14) étant disposés contre ou sur l'arbre d'entraînement (20). Selon l'invention, l'arbre d'entraînement (20) est monté rotatif au moyen d'un premier, d'un deuxième et d'un troisième palier radial (27, 28, 30), le premier palier radial (27) étant disposé entre le rotor (16) du moteur électrique (14) et la vis de compresseur (24), le deuxième palier radial (28) étant disposé sur le côté de la vis de compresseur (24) opposée au premier palier radial (27), et le troisième palier radial (30) étant disposé sur un côté du rotor (16) du moteur électrique (14) qui est opposé au premier palier radial (27), le premier palier radial et le deuxième palier radial étant configurés chacun sous la forme de paliers à rouleau et le troisième palier radial (30) sous la forme d'un palier lisse.
EP14821504.9A 2013-12-12 2014-12-12 Compresseur Active EP3080455B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013020535.2A DE102013020535A1 (de) 2013-12-12 2013-12-12 Verdichter
PCT/EP2014/003342 WO2015086158A1 (fr) 2013-12-12 2014-12-12 Compresseur

Publications (2)

Publication Number Publication Date
EP3080455A1 true EP3080455A1 (fr) 2016-10-19
EP3080455B1 EP3080455B1 (fr) 2021-09-22

Family

ID=52278550

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14821504.9A Active EP3080455B1 (fr) 2013-12-12 2014-12-12 Compresseur

Country Status (5)

Country Link
US (1) US20160327040A1 (fr)
EP (1) EP3080455B1 (fr)
CN (1) CN105874205A (fr)
DE (1) DE102013020535A1 (fr)
WO (1) WO2015086158A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015113698B4 (de) * 2015-08-19 2021-11-11 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Kompressoreinheit mit angeflanschtem Elektromotor
JP6835681B2 (ja) * 2017-07-18 2021-02-24 日立ジョンソンコントロールズ空調株式会社 スクリュー流体機械
DE102018130472A1 (de) * 2018-11-30 2020-06-04 Nidec Gpm Gmbh Schraubenspindelpumpe

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19744466A1 (de) * 1997-10-08 1999-04-22 Kt Kirsten Technologie Entwick Schraubenverdichter
EP1348077A1 (fr) * 2001-01-05 2003-10-01 Bitzer Kühlmaschinenbau GmbH Compresseur frigorifique
EP1366297A1 (fr) * 2001-03-06 2003-12-03 Atlas Copco Airpower N.V. Compresseur a vis a injection d'eau

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4975104U (fr) * 1972-10-14 1974-06-28
JPS54154811A (en) * 1978-05-26 1979-12-06 Hitachi Ltd Screw compressor
DE3106483A1 (de) * 1981-02-21 1982-09-09 Allweiler Ag, 7760 Radolfzell Stopfbuechsloses pumpenaggregat
JP3668616B2 (ja) * 1998-09-17 2005-07-06 株式会社日立産機システム オイルフリースクリュー圧縮機
DE102006028291B4 (de) * 2006-06-20 2013-10-24 Gea Grasso Gmbh Anordnung einer Ölpumpe im Schraubenverdichter
CN201321981Y (zh) * 2008-11-28 2009-10-07 武汉凯龙技术开发有限责任公司 大型半封闭螺杆式制冷压缩机
HUE032448T2 (en) * 2009-01-12 2017-09-28 Dow Global Technologies Llc Improved shaft bearing construction
JP2013541669A (ja) * 2010-10-27 2013-11-14 ゲーエーベーエル．ベッケル・ゲーエムベーハー 真空ポンプ
BE1020311A3 (nl) * 2012-02-28 2013-07-02 Atlas Copco Airpower Nv Schroefcompressor.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19744466A1 (de) * 1997-10-08 1999-04-22 Kt Kirsten Technologie Entwick Schraubenverdichter
EP1348077A1 (fr) * 2001-01-05 2003-10-01 Bitzer Kühlmaschinenbau GmbH Compresseur frigorifique
EP1366297A1 (fr) * 2001-03-06 2003-12-03 Atlas Copco Airpower N.V. Compresseur a vis a injection d'eau

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2015086158A1 *

Also Published As

Publication number Publication date
DE102013020535A1 (de) 2015-06-18
WO2015086158A1 (fr) 2015-06-18
CN105874205A (zh) 2016-08-17
US20160327040A1 (en) 2016-11-10
EP3080455B1 (fr) 2021-09-22

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