EP1444440A1 - Pompe a vide a vis refroidie - Google Patents

Pompe a vide a vis refroidie

Info

Publication number
EP1444440A1
EP1444440A1 EP02790310A EP02790310A EP1444440A1 EP 1444440 A1 EP1444440 A1 EP 1444440A1 EP 02790310 A EP02790310 A EP 02790310A EP 02790310 A EP02790310 A EP 02790310A EP 1444440 A1 EP1444440 A1 EP 1444440A1
Authority
EP
European Patent Office
Prior art keywords
cooling
pump
housing
rotors
pump according
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
EP02790310A
Other languages
German (de)
English (en)
Other versions
EP1444440B1 (fr
Inventor
Manfred Behling
Hartmut Kriehn
Klaus Rofall
Ralf Steffens
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.)
Leybold GmbH
Original Assignee
Leybold Vakuum 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 Leybold Vakuum GmbH filed Critical Leybold Vakuum GmbH
Publication of EP1444440A1 publication Critical patent/EP1444440A1/fr
Application granted granted Critical
Publication of EP1444440B1 publication Critical patent/EP1444440B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F04C18/082—Details specially related to intermeshing engagement type pumps
    • F04C18/086—Carter
    • 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
    • F04C29/04—Heating; Cooling; Heat insulation
    • 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
    • F04C29/04—Heating; Cooling; Heat insulation
    • F04C29/045—Heating; Cooling; Heat insulation of the electric motor in hermetic 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
    • F04C2240/00—Components
    • F04C2240/60—Shafts
    • F04C2240/603—Shafts with internal channels for fluid distribution, e.g. hollow shaft

Definitions

  • the invention relates to a screw vacuum pump with a pump housing, with rotors accommodated in this housing, with a liquid cooling for the rotors and with a drive motor.
  • the present invention has for its object to improve the cooling of a screw vacuum pump with the features mentioned. According to the invention, this object is achieved by the characterizing features of the claims.
  • a forced air flow which is generated, for example, by a fan coupled to the drive motor
  • the invention makes it possible to implement a cooling concept for a screw vacuum pump, in which the entire machine is air-cooled, although there is also liquid cooling for the rotors.
  • the heat generated is absorbed by two different heat transfer media (liquid for the internal rotor cooling, external cooling air flow), but ultimately it is dissipated from the cooling air flow. This also applies to the dissipation of secondary heat flows, generated by engine losses, gearbox and bearing losses etc.
  • the screw vacuum pump to be cooled is designated by 1, its pump chamber housing by 2, its rotors by 3, 4, its inlet by 5 and its gearbox / engine compartment housing by 6, which connects to the pump chamber housing 2 by rotors 3, 4 , An outlet on the pressure side is not shown.
  • the gear chamber 7 In the housing 6 there are the gear chamber 7, the motor compartment 8 with the drive motor 9 and a further compartment 10, which is part of the coolant circuit for the rotors 3, 4.
  • the rotors 3, 4 are equipped with shafts 11, 12 which penetrate the gear chamber 7 and the engine compartment 8. About bearings in the partitions between the scooping area and 'gearbox 7 (partition 13) as well as engine compartment 8 and coolant space 10 (partition 14), the rotors 3, 4 are overhung.
  • the partition between the gear compartment 7 and the engine compartment 8 is designated 15.
  • the gear pair 7, which causes the synchronous rotation of the rotors 3, 4, is the gear pair 16, 17.
  • the rotor shaft 11 is at the same time the drive shaft of the motor 9.
  • the motor 9 can also have a drive shaft different from the shafts 11, 12. In such a solution, its drive shaft ends in the gear chamber 7 and is equipped there with a gearwheel which engages with one of the synchronization gearwheels 16, 17 (or with another gearwheel of the shaft 12, not shown).
  • the shaft 11 passes through the space 10, is guided out of the housing 6 of the pump 1 and carries the wheel 20 of a fan or fan 21 at its free end.
  • a housing 22 comprising the pump 1 is used to guide the air movement generated by the fan wheel 20, that is open in the area of both end faces (openings 23, 24).
  • the fan 21 is operated such that the fan / motor-side opening 24 forms the air inlet opening.
  • a heat exchanger 25 through which the cooling liquid of the rotor internal cooling flows.
  • the heat exchanger 25 is expediently arranged in front of the fan 21, so that it simultaneously forms a contactor for the fan wheel 20.
  • the advantage of this arrangement is that it cools the pump chamber housing 2 of the pump 1 Air flow is preheated. It is thereby achieved that thermal expansions of the pumping chamber housing 2 are permitted to the extent that the rotors 3, 4, which assume relatively high temperatures during the operation of the pump 1, do not touch the housing 2.
  • the housing 2 and the rotors 3, 4 are preferably made of aluminum to improve the heat conduction. Furthermore, the housing 2 can have ribs to improve the thermal contact.
  • the gap between the rotors 3, 4 and the housing 2 is set by the size of the heat exchanger 25 and also the degree of ribbing of the pump chamber housing 2.
  • the coolant circuit for cooling the rotors 4, 5 is only indicated schematically.
  • German patent applications 197 45 616, 1 . 99 63 171.9 and 199 63 172.7 cooling systems of this type are described in detail.
  • the shafts 11 and 12 serve to transport the coolant (for example oil) to and from the rotors 3, 4.
  • the coolant leaving the rotors 3, 4 collects in the engine compartment 8. From there it is passed over the Line 26 supplied to the heat exchanger 25.
  • the air flow generated by the fan 21 absorbs the heat absorbed by the cooling liquid in the rotors 3, 4.
  • the liquid leaving the heat exchanger 25 is supplied to the space 10 via the line 26.
  • the features according to the invention make it possible to further increase the power density of a screw pump.
  • the pump can be made smaller and operated with higher surface temperatures.
  • the outer air duct housing 22 also functions as a touch guard.

Landscapes

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

Abstract

L'invention concerne une pompe à vide à vis (1) comprenant un corps de pompe (2, 69 dans lequel sont montés des rotors (3, 4), un système de refroidissement à liquide destiné au rotor et un moteur d'entraînement (9). Pour que le refroidissement d'une telle pompe soit amélioré, le corps de pompe (2, 6) est également soumis à un refroidissement provoqué par un écoulement d'air forcé.
EP02790310.3A 2001-11-15 2002-10-30 Pompe a vide a vis refroidie Expired - Lifetime EP1444440B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10156180 2001-11-15
DE10156180.6A DE10156180B4 (de) 2001-11-15 2001-11-15 Gekühlte Schraubenvakuumpumpe
PCT/EP2002/012086 WO2003042541A1 (fr) 2001-11-15 2002-10-30 Pompe a vide a vis refroidie

Publications (2)

Publication Number Publication Date
EP1444440A1 true EP1444440A1 (fr) 2004-08-11
EP1444440B1 EP1444440B1 (fr) 2014-06-04

Family

ID=7705882

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02790310.3A Expired - Lifetime EP1444440B1 (fr) 2001-11-15 2002-10-30 Pompe a vide a vis refroidie

Country Status (10)

Country Link
US (1) US7056108B2 (fr)
EP (1) EP1444440B1 (fr)
JP (1) JP4589001B2 (fr)
KR (1) KR100892530B1 (fr)
CN (1) CN100422561C (fr)
CA (1) CA2463617A1 (fr)
DE (1) DE10156180B4 (fr)
HU (1) HUP0402372A2 (fr)
PL (1) PL206617B1 (fr)
WO (1) WO2003042541A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10156179A1 (de) * 2001-11-15 2003-05-28 Leybold Vakuum Gmbh Kühlung einer Schraubenvakuumpumpe
TWI277696B (en) * 2002-05-20 2007-04-01 Teijin Seiki Co Ltd Heat insulation structure of vacuum pump
DE102005033084B4 (de) * 2005-07-15 2007-10-11 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Öleingespritzter Verdichter mit Mitteln zur Öltemperaturregelung
JP5197141B2 (ja) * 2008-05-12 2013-05-15 株式会社神戸製鋼所 ２段スクリュ圧縮機および冷凍装置
JP2010127119A (ja) * 2008-11-25 2010-06-10 Ebara Corp ドライ真空ポンプユニット
CN102280965B (zh) * 2010-06-12 2013-07-24 中国科学院沈阳科学仪器股份有限公司 真空泵用屏蔽电机
EP2615307B1 (fr) * 2012-01-12 2019-08-21 Vacuubrand Gmbh + Co Kg Pompe à vide à vis
CN102659051B (zh) * 2012-05-16 2014-04-16 宁波三罗机械有限公司 便于散热的牵引吊装工具
KR101712962B1 (ko) * 2015-09-24 2017-03-07 이인철 냉각장치를 갖춘 진공펌프
CN105805007B (zh) * 2016-01-21 2017-11-21 江西五十铃发动机有限公司 一种复合冷却式压力润滑电动真空泵
DE102016216279A1 (de) 2016-08-30 2018-03-01 Leybold Gmbh Vakuumpumpen-Schraubenrotor
KR101869386B1 (ko) * 2016-10-14 2018-06-20 주식회사 벡스코 냉각식 진공펌프
US11293422B2 (en) 2019-08-02 2022-04-05 Thermo Finnigan Llc Methods and systems for cooling a vacuum pump
CN111594439A (zh) * 2020-04-23 2020-08-28 浙江佳成机械有限公司 一种三级螺杆压缩机
KR102437094B1 (ko) * 2022-04-25 2022-08-30 ㈜글로텍 냉각스크린 및 냉각장치가 구비된 스크류형 진공펌프

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DE2013785A1 (de) * 1970-03-23 1971-11-04 Hoftmann J Anordnung zur Auslösung einer Verriegelung, die nur bei Übereinstimmung bestimmter Voraussetzungen eintritt
DE2217022C3 (de) 1972-04-08 1975-03-27 Sihi Gmbh & Co Kg, 2210 Itzehoe Flüssigkeitsring-Vakuumpumpe mit Umlaufbehälter
GB1557296A (en) * 1976-04-26 1979-12-05 Cooper Ind Inc Liquid injected compressors
DE3136775A1 (de) * 1981-09-16 1983-03-31 Isartaler Schraubenkompressoren GmbH, 8192 Geretsried "kuehleranordnung fuer eine verdichteranlage"
US4475876A (en) * 1982-12-27 1984-10-09 Allis-Chalmers Corporation Oil purge system for cold weather shutdown of oil flooded screw compressor
CA1279856C (fr) * 1985-10-09 1991-02-05 Akira Suzuki Compresseur tournant non-huile
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FR2637655B1 (fr) * 1988-10-07 1994-01-28 Alcatel Cit Machine rotative du type pompe a vis
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Also Published As

Publication number Publication date
CN100422561C (zh) 2008-10-01
DE10156180A1 (de) 2003-05-28
EP1444440B1 (fr) 2014-06-04
PL206617B1 (pl) 2010-08-31
WO2003042541A1 (fr) 2003-05-22
US7056108B2 (en) 2006-06-06
KR20050042067A (ko) 2005-05-04
JP2005509785A (ja) 2005-04-14
KR100892530B1 (ko) 2009-04-10
US20040265160A1 (en) 2004-12-30
CN1585860A (zh) 2005-02-23
CA2463617A1 (fr) 2003-05-22
PL369467A1 (en) 2005-04-18
JP4589001B2 (ja) 2010-12-01
HUP0402372A2 (hu) 2005-03-29
DE10156180B4 (de) 2015-10-15

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