EP3080458B1 - Verdichter - Google Patents

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Publication number
EP3080458B1
EP3080458B1 EP14823898.3A EP14823898A EP3080458B1 EP 3080458 B1 EP3080458 B1 EP 3080458B1 EP 14823898 A EP14823898 A EP 14823898A EP 3080458 B1 EP3080458 B1 EP 3080458B1
Authority
EP
European Patent Office
Prior art keywords
compressor
volume
oil
oil discharge
separation apparatus
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.)
Active
Application number
EP14823898.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3080458A1 (de
Inventor
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 EP3080458A1 publication Critical patent/EP3080458A1/de
Application granted granted Critical
Publication of EP3080458B1 publication Critical patent/EP3080458B1/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
    • F04C18/08—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
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/02—Liquid sealing for high-vacuum pumps or for compressors
    • 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
    • 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
    • F04C2240/40—Electric motor

Definitions

  • the present invention relates to a screw compressor according to the preamble of patent claim 1.
  • screw compressors that work in a dry-running mode of operation and screw compressors that work in an oil-flooded mode of operation.
  • oil plays a role both as a lubricant and as a sealant in the compression process itself.
  • an oil separator is generally provided on a high-pressure side of such screw compressors.
  • an oil separator for example of a semi-hermetic compact screw compressor, consists of two spaces or volumes which are separated from knitted metal by a demistor, also referred to as a droplet separator or aerosol separator.
  • Compressed gas-oil mixture passes from a pressure pipe, which is fed by a compression device or compression unit in the form of at least one screw rotor, into the first space or the first volume in which a Oil pre-separation takes place before it passes through the demistor.
  • a possible embodiment of a compressor according to the invention more precisely a screw compressor 10 according to the invention, which is also referred to below as compressor 10 for short, is shown.
  • the compressor 10 has a housing 12 and an electric motor 14 arranged in the housing 12. Furthermore, the compressor 10 has a drive shaft 16 and a compression device 18, which has a screw rotor 20 and a second screw rotor 22 which is in engagement with the first screw rotor 20.
  • the screw rotors 20, 22 are rotatably driven directly via the drive shaft 16 (in alternative embodiments indirectly, for example via a gear arrangement). Alternatively, a screw compressor 10 with only one screw rotor is also conceivable.
  • the first screw rotor 20 is arranged to be rotatable about a first axis of rotation arranged in the axial direction.
  • the second screw rotor 22 is arranged to be rotatable about a second axis of rotation which extends parallel to the first axis of rotation.
  • Both the first and the second helical rotor 20, 22 are arranged in a compression chamber 24 which is at least partially fluid-tight towards the surroundings and opens into a high-pressure volume 26.
  • the compressor 10 of the embodiment described works in an oil-flooded operating mode, in which oil located in the compressor 10 is used both as a lubricant and (for example during the compression process itself) as a sealant.
  • oil located in the compressor 10 is used both as a lubricant and (for example during the compression process itself) as a sealant.
  • the medium to be compressed for example refrigerant, oil, in particular in the form of drops or as an aerosol, is entrained or mixed with oil.
  • the compressed medium-oil mixture gas-oil mixture
  • the high pressure volume 26 via a pressure pipe 28.
  • the compressor 10 has a first volume 32 in the form of a first chamber and a second volume 34 in the form of a second chamber, the first volume 32 and the second volume 34 being separated by a separating device 36, which has a separating wall 38.
  • the partition wall has a first partition wall section 38-1 in the form of a perforated plate and a second partition wall section 38-2, which is connected to the first partition wall section 38-1 and is designed as a material section without a cutout. While the first partition wall section 38-1 is arranged in an upper region of the compressor 10 or the first volume 32, the second partition wall section 38-2 is arranged in a lower region of the compressor.
  • a demistor 40 is arranged in or on the partition wall 38.
  • the first volume 32 has an approximately cylindrical housing side wall 42 which is delimited at a first end 44 by an end wall 46 and at a second end 48 opposite the end wall 46 by the separating device 36, in particular partition 38. From the second volume 34, the compressed medium then passes to a compressor outlet 50, from where it is available for the respective desired application.
  • An oil pre-separation takes place in the first volume 32, into which the compressed medium including the oil carried along is introduced via the pressure pipe 28.
  • oil is deposited on a housing inner wall 52 of the first volume 32.
  • an oil discharge device or oil drainage device or oil catching device 54 is arranged on the separating device 36, in particular separating wall 38.
  • demistor 40 which for this purpose has a metal mesh or metal mesh which is arranged in the area through which the flow passes.
  • a metal mesh or metal mesh which is arranged in the area through which the flow passes.
  • the first volume 32 is approximately cylindrical, so that the partition 38 with the demistor 40 (ie the partition 38 on which the demistor 40 is arranged) has an approximately circular base area.
  • the partition 38 with the demistor 40 ie the partition 38 on which the demistor 40 is arranged
  • has an approximately circular base area Alternatively, other designs (rectangular, hexagonal or octagonal or with many corners) are also possible provided) is conceivable, but the approximately circular design is often preferable for pressure vessels in particular.
  • the oil discharge device or oil collecting device 54 is embodied in the form of a channel and extends inward from a radially outer end of the separating device 36, in particular separating wall 38.
  • the oil draining device or oil collecting device 54 which is in the form of a channel, has a delimitation 56, in particular a wall, which is approximately L-shaped in cross section and which is arranged on the separating device 36, in the embodiment described here on the partition 38 and with the housing side wall 42 or the housing inner wall 52 is in contact, which forms a lateral delimitation of the oil discharge device or oil catching device 54, so that it overall has a channel shape (approximately U-shaped cross section).
  • the oil draining device or oil collecting device 54 extends over a segment-like section, more precisely a segment-like section of the partition 38. Where the oil draining device or oil collecting device 54 is not formed, the oil collecting therein can drain into an oil sump located in the compressor.
  • the oil discharge device or oil catching device 54 is not formed or is cut out on a side located at the bottom during operation of the compressor 10 in a (circular) sector of 20 ° to 90 °, preferably from 60 ° to 80 ° inclusive.
  • this means that the oil discharge device or oil catching device 54 has a sector angle of 270 ° to 340 °, preferably 280 ° to 300 °. In the specifically described embodiment, the sector angle is 290 °.
  • the oil discharge device or oil catching device 54 is arranged completely in the first volume 32.
  • the oil discharge device or oil catching device 54 has an oil outlet or oil outlet or an oil outlet opening 55 which is arranged in the first volume 32, in particular therefore opens there. In this way, the oil caught or discharged by the oil discharge device or oil catching device 54 is discharged or discharged into the first volume 32.
  • the oil discharge device or oil catching device 54 in alternative embodiments is also reduced on or in the partition 38 and / or the demistor 40, for example as a recess or also in the form of a point Material accumulation, for example groove can be formed.
  • the embodiment described above according to Fig. 1 and Fig. 2 however, an effective construction ensures that optimum oil drainage is ensured.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP14823898.3A 2013-12-12 2014-12-12 Verdichter Active EP3080458B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013020533.6A DE102013020533A1 (de) 2013-12-12 2013-12-12 Verdichter
PCT/EP2014/003344 WO2015086160A1 (de) 2013-12-12 2014-12-12 Verdichter

Publications (2)

Publication Number Publication Date
EP3080458A1 EP3080458A1 (de) 2016-10-19
EP3080458B1 true EP3080458B1 (de) 2020-10-07

Family

ID=52282666

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14823898.3A Active EP3080458B1 (de) 2013-12-12 2014-12-12 Verdichter

Country Status (5)

Country Link
US (1) US10451066B2 (zh)
EP (1) EP3080458B1 (zh)
CN (1) CN105793573B (zh)
DE (1) DE102013020533A1 (zh)
WO (1) WO2015086160A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016011506A1 (de) * 2016-09-21 2018-03-22 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Schraubenkompressor für ein Nutzfahrzeug
CN107630819A (zh) * 2017-10-10 2018-01-26 珠海格力电器股份有限公司 油分装置、螺杆压缩机及空调系统
WO2020123273A1 (en) 2018-12-10 2020-06-18 Carrier Corporation Modular compressor discharge system

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6016794Y2 (ja) * 1978-08-19 1985-05-24 株式会社ボッシュオートモーティブ システム ベ−ン型圧縮機
CA1162171A (en) * 1979-04-04 1984-02-14 Kaichi Yamada Vane type rotary compressor
US4478054A (en) * 1983-07-12 1984-10-23 Dunham-Bush, Inc. Helical screw rotary compressor for air conditioning system having improved oil management
JPH0315693A (ja) * 1989-06-09 1991-01-24 Ebara Corp スクリュー圧縮装置
JP3565706B2 (ja) * 1998-04-09 2004-09-15 株式会社日立製作所 スクリュー圧縮機
DE19845993A1 (de) * 1998-10-06 2000-04-20 Bitzer Kuehlmaschinenbau Gmbh Schraubenverdichter
EP1379786B1 (en) 2001-04-17 2005-03-16 TM.C. S.P.A. Termomeccanica Compressori Screw compressor unit with incorporated oil cooling
JP2003042081A (ja) * 2001-07-30 2003-02-13 Hitachi Ltd スクリュー圧縮機
DE102005010690B4 (de) * 2005-03-09 2007-04-12 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Öleingespritzter Verdichter mit Temperaturschalter
DE102005033084B4 (de) * 2005-07-15 2007-10-11 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Öleingespritzter Verdichter mit Mitteln zur Öltemperaturregelung
DE102008036317A1 (de) * 2008-07-29 2010-02-25 Bitzer Kühlmaschinenbau Gmbh Schraubenverdichter
US8475151B2 (en) * 2009-03-26 2013-07-02 Johnson Controls Technology Company Compressor
DE102010002649A1 (de) 2010-03-08 2011-09-08 Bitzer Kühlmaschinenbau Gmbh Schraubenverdichter
CN202560560U (zh) * 2012-04-16 2012-11-28 无锡市制冷设备厂有限责任公司 一种螺杆压缩机

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
US10451066B2 (en) 2019-10-22
CN105793573A (zh) 2016-07-20
US20160312778A1 (en) 2016-10-27
WO2015086160A1 (de) 2015-06-18
DE102013020533A1 (de) 2015-07-02
CN105793573B (zh) 2020-01-03
EP3080458A1 (de) 2016-10-19

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