EP0459107A1 - Pompe à vide à palettes et son procédé d'approvisionnement en huile - Google Patents

Pompe à vide à palettes et son procédé d'approvisionnement en huile Download PDF

Info

Publication number
EP0459107A1
EP0459107A1 EP91105121A EP91105121A EP0459107A1 EP 0459107 A1 EP0459107 A1 EP 0459107A1 EP 91105121 A EP91105121 A EP 91105121A EP 91105121 A EP91105121 A EP 91105121A EP 0459107 A1 EP0459107 A1 EP 0459107A1
Authority
EP
European Patent Office
Prior art keywords
oil
sump
pump
stage
supplied
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
EP91105121A
Other languages
German (de)
English (en)
Other versions
EP0459107B1 (fr
Inventor
Thomas Abelen
Lutz Arndt
Winfried Kaiser
Peter Müller
Dieter Vorberg
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.)
Balzers und Leybold Deutschland Holding AG
Original Assignee
Leybold AG
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 AG filed Critical Leybold AG
Publication of EP0459107A1 publication Critical patent/EP0459107A1/fr
Application granted granted Critical
Publication of EP0459107B1 publication Critical patent/EP0459107B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Definitions

  • the invention relates to a method for supplying oil to a two-stage rotary vane vacuum pump with scooping areas and further points to be supplied with oil, and with an oil sump.
  • the invention also relates to a two-stage rotary vane vacuum pump suitable for carrying out this method.
  • the oil In rotary vane vacuum pumps operated with oil, the oil initially has the task of creating an adequate seal between the suction and pressure sides in the suction chambers. At the same time, the oil is used to lubricate the rotors in the pumping chambers and the slides guided in them. Furthermore, oil circulated in the circuit causes cooling especially of the components rotating in a vacuum. In addition, dirt particles from the oil are to be conveyed into the oil sump. Finally, the other bearing points of the vacuum pump (rotor bearings, bearing of the drive shaft, etc.) should also be lubricated with the help of the oil in the pump.
  • the present invention is based on the object of specifying a method of the type mentioned at the beginning and of creating a two-stage rotary vane pump which is suitable for carrying out this method and which do not require a separate pressure oil pump and which nevertheless ensures an adequate oil supply to all points requiring oil.
  • this object is achieved in an operating method of the type mentioned at the outset in that the oil from the oil sump is conveyed with the aid of the fore-vacuum stage of the pump into an intermediate sump arranged above the bearing points, that it is gravity-fed to further points to be supplied with oil from this intermediate sump and that it flows back into the oil sump from these points.
  • the fact that the oil is conveyed with the aid of the fore-vacuum stage of the pump initially ensures the oil supply to this stage of the fore-vacuum stage. From there, the oil reaches the intermediate sump, which has a greater geodetic height than the lubrication points that are subsequently to be supplied with oil.
  • the drains from the intermediate sump can be formed by channels in the cast, holes with relatively large diameters or by baffles, so that they are completely insensitive to dirt. The risk of contaminated oil destroying the pump is therefore eliminated. If, in addition, particularly sensitive bearings are designed in such a way that the lubricant can never drain off completely, emergency running properties are achieved which prevent total damage in the event of a lack of oil supply.
  • a two-stage rotary vane vacuum pump suitable for carrying out the method according to the invention expediently has a one leading from the oil sump to the scooping chamber of the fore-vacuum stage Oil line whose inlet opening is below the oil level in the oil sump. Oil passes through this line into the fore-vacuum stage and is conveyed by it into the intermediate oil sump located above the outlet valve of the fore-vacuum stage.
  • the intermediate sump is expediently connected via oil lines to the lower-lying bearing points, from which the oil flows back into the oil sump.
  • the two-stage vacuum pump 1 shown in the figures as an exemplary embodiment comprises the actual pump housing 2, the oil box 3 surrounding the pump housing, the drive motor 4 and the outer housing or the hood 5.
  • the pump housing 2 and the drive motor 4 are fastened to a shield 6 , which is supported by a base plate 7 on the floor.
  • Part of the pump housing 2 is the one-piece pump ring 8, the opening of which has three areas 11, 12, 13 with different designs.
  • the rotor system 14 with the sections 14a, 14b and 14c is also formed in one piece within the pump ring 8.
  • the two outer sections 14a and 14c are equipped with slide slots 15, 16 accessible from the end faces and form the anchors of the high vacuum or fore vacuum stage.
  • the length and diameter of the middle section 14b of the rotor system 14 corresponds to the middle area 12 of the opening of the pump ring 8 in such a way that this area has the function of a sliding bearing for the rotor system 14.
  • the slide of the HV stage is also included Designated 18.
  • the area 11 of the pump ring 8 forms, together with the front plate 19, the scooping space 21 of the fore-vacuum (VV) stage.
  • the slide of the VV stage is designated 22.
  • the inlet channel of the HV stage is designated 23.
  • the channel leading from the outlet of the HV stage to the inlet of the VV stage is only shown in FIG. 2 and designated by 24.
  • the outlet valve 26 is assigned to the outlet channel 25 (FIG. 2) of the VV stage.
  • the outlet valve 26 is designed as a check valve and takes over the vacuum protection of the recipient in the event of a pump failure.
  • the valve 26 is arranged in the upper region of the pump housing 2. It is located at the bottom of a recess 27 which forms an intermediate oil sump during the operation of the vacuum pump.
  • the inlet port 31 of the vacuum pump shown is attached to the intermediate plate 6. It is connected to the inlet duct 23 of the HV stage via a bore 32 in the shield 6.
  • the outlet connector 33 is also provided on the shield 6. It is connected to the interior of the oil box 3 via a hole corresponding to the hole 32.
  • a dome 35 arranged on the front side of the oil box. Its central section 36 is transparent and serves to check the oil level in the oil box 3.
  • the dome 35 has an approximately semicircular cross section, the broad side of which faces the oil box 3. It extends over the entire height of the oil box 3, so that it can be equipped with the oil fill opening 37 and the oil drain opening 38.
  • the motor 4 is equipped with a blower 41 on its free end face.
  • the cooling air flow generated by this fan serves not only to cool the engine, but also to cool the oil box 3.
  • Both the motor housing and the oil box 3 are equipped with axially or horizontally running cooling fins 42 and 43, respectively.
  • the intermediate plate 32 also has the function of a clutch housing. It is provided with a bearing bore 51, into which a rotor shaft journal 52 arranged on the rotor system 14 and the shaft journal 53 of the drive motor 4 project and are slidably supported there. With the help of a pin coupling 54, the two shaft journals 52, 53 are coupled on the end face. Instead of the pin coupling, interlocking projections could also be provided in the area of the end faces of the shaft journals 52, 53.
  • Each of the shaft journals 52, 53 is assigned a shaft sealing ring 55, 56, the seat of which is also located in the clutch housing. These form a lubricant chamber 57, which contains the clutch and can be operated with full lubrication via the oil bore 58. Since the shaft seal ring 55 on the rotor side is in the immediate vicinity of the HV stage, the performance of this stage operated with insufficient lubrication is not impaired by lubricating oil.
  • FIGS. 1 and 3 Below the oil level 71 of the oil sump 72 there is the inlet opening 73 of an oil line 74, which leads into the scoop chamber 21 of the VV stage 11, 14a.
  • the oil channel 74 consists of several bores both in the intermediate plate 6 and in the pump housing 8, which enable the switching of a solenoid valve 75 in the oil channel 74.
  • the valve 75 closes so that no oil can get into the recipient, the vacuum of which is secured as a result of the outlet valve 26.
  • the mouth of the oil channel 74 into the scoop chamber 21 of the VV stage is expediently designed as a nozzle 76 (cf. also FIG. 3) and is located such that a direct connection to the suction side (inlet channel 24) is always provided by the slide 22 of the VV stage is blocked.
  • the nozzle 76 allows the amount of oil sucked in by the vacuum in the VV stage to be adjusted.
  • a branch 77 leads from the oil channel 74 directly to the intermediate store 12, 14b, where a pressure is established between the pressures of the HV stage and the VV stage during operation of the pump.
  • the oil entering the interim storage facility flows into both the HV stage and the VV stage.
  • the amount of oil reaching the HV stage is sufficient to supply it with the desired lack of lubrication.
  • This oil reaches the VV stage 11, 14a via the connecting channel 24.
  • the oil flowing into the VV stage passes together with the pumped gas through the outlet valve 26 and forms the intermediate oil sump in the recess 27. This is connected to an oil line 78 (indicated by dashed lines in FIGS. 1 and 2), which leads to the further points of the pump which are to be supplied with oil.
  • the oil channel 78 initially consists of an approximately axially directed bore 79 which is guided laterally in the pump housing and extends to the intermediate shield 6.
  • the oil could also be led to the intermediate plate 6 through a laterally guided channel.
  • a transverse bore 81 adjoins the axial bore 79 and runs above the coupling and the mounting of the pins (52, 53). This bore 81 ends in an area from which the oil can flow back into the sump 72.
  • the bores 79, 81 are arranged inclined such that the oil from the intermediate sump reaches the other points to be lubricated due to gravity.
  • a bearing housing and a clutch housing are shown schematically as blocks 83 and 84.
  • the position of the oil bore 81 is shown in Figure 2 by a dashed line. It passes through - preferably inclined - the pump housing 2 and cuts the lubricant chamber 57 to be supplied with oil above the shaft journals 52, 53 or the coupling 54.
  • An axial groove 82 is expediently provided in the bearing and coupling housing 6 in this area.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP91105121A 1990-05-29 1991-03-30 Pompe à vide à palettes et son procédé d'approvisionnement en huile Expired - Lifetime EP0459107B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4017191 1990-05-29
DE4017191A DE4017191A1 (de) 1990-05-29 1990-05-29 Verfahren zur oelversorgung einer zweistufigen drehschiebervakuumpumpe und fuer die durchfuehrung dieses verfahrens geeignete drehschiebervakuumpumpe

Publications (2)

Publication Number Publication Date
EP0459107A1 true EP0459107A1 (fr) 1991-12-04
EP0459107B1 EP0459107B1 (fr) 1994-09-21

Family

ID=6407366

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91105121A Expired - Lifetime EP0459107B1 (fr) 1990-05-29 1991-03-30 Pompe à vide à palettes et son procédé d'approvisionnement en huile

Country Status (4)

Country Link
US (1) US5178522A (fr)
EP (1) EP0459107B1 (fr)
JP (1) JPH04231696A (fr)
DE (2) DE4017191A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008074362A1 (fr) * 2006-12-18 2008-06-26 Ateliers Busch Sa Corps de pompe à palettes
EP2963240A3 (fr) * 2014-07-04 2016-07-06 Pfeiffer Vacuum Gmbh Pompe à vide

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4325284A1 (de) * 1993-07-28 1995-02-02 Leybold Ag Gehäuse für eine zweistufige Drehschiebervakuumpumpe
DE4325285A1 (de) * 1993-07-28 1995-02-02 Leybold Ag Ölgedichtete Vakuumpumpe
DE4325286A1 (de) * 1993-07-28 1995-02-02 Leybold Ag Zweistufige Drehschiebervakuumpumpe
DE9311986U1 (de) * 1993-08-11 1993-10-14 Leybold Ag Zweistufige Drehschiebervakuumpumpe
DE4327583A1 (de) * 1993-08-17 1995-02-23 Leybold Ag Vakuumpumpe mit Ölabscheider
US20050084392A1 (en) * 2003-10-20 2005-04-21 United Dominion Industries, Inc. Pump drive alignment apparatus and method
ITMI20052191A1 (it) * 2005-11-16 2007-05-17 Enea Mattei Spa Sistema di raffreddamento integrato e compressore di fluidi gassosi provvisto dello stesso
DE102006058839A1 (de) * 2006-12-13 2008-06-19 Pfeiffer Vacuum Gmbh Schmiermittelgedichtete Drehschiebervakuumpumpe
WO2015007015A1 (fr) * 2013-07-19 2015-01-22 浙江飞越机电有限公司 Pompe à vide à aube rotative à deux étages dotée d'un réservoir de carburant latéral

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2902210A (en) * 1955-08-15 1959-09-01 Edwards High Vacuum Ltd Multi-stage mechanical vacuum pumps
FR2073819A5 (fr) * 1969-12-16 1971-10-01 High Edwards Vacuum Int
US4120621A (en) * 1976-07-19 1978-10-17 Puritan Bennett Corporation Oil sealed single stage vacuum pump
FR2489433A1 (fr) * 1980-09-03 1982-03-05 Leybold Heraeus Sogev Pompe a vide rotative a joint d'huile

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1409868A (en) * 1920-08-05 1922-03-14 W M Hardwick Pump
US1672205A (en) * 1925-06-26 1928-06-05 Eisler Charles Compound vacuum pump
US2062045A (en) * 1926-10-12 1936-11-24 Gen Motors Corp Motor operated machine unit
DE1191070B (de) * 1955-08-15 1965-04-15 Edwards High Vacuum Ltd Zweistufige, oelabgedichtete Drehkolben-Vakuumpumpe
US2877946A (en) * 1955-11-10 1959-03-17 Central Scientific Co Vacuum pump
DE1190134B (de) * 1957-02-07 1965-04-01 Edwards High Vacuum Ltd Drehkolben-Vakuumpumpe mit oelueberlagertem Auspuffventil
FR1302509A (fr) * 1961-07-13 1962-08-31 Alsacienne D Electronique Et D Perfectionnement aux pompes à vide rotatives à joint d'huile
US3525578A (en) * 1968-11-29 1970-08-25 Precision Scient Co Vacuum pump
DE2354039A1 (de) * 1973-10-29 1975-05-07 Leybold Heraeus Gmbh & Co Kg Drehschieberpumpe
IT1207829B (it) * 1987-02-04 1989-06-01 Galileo Spa Off Perfezionamento nel circuito di lubrificazione delle pompe rotative per vuoto.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2902210A (en) * 1955-08-15 1959-09-01 Edwards High Vacuum Ltd Multi-stage mechanical vacuum pumps
FR2073819A5 (fr) * 1969-12-16 1971-10-01 High Edwards Vacuum Int
US4120621A (en) * 1976-07-19 1978-10-17 Puritan Bennett Corporation Oil sealed single stage vacuum pump
FR2489433A1 (fr) * 1980-09-03 1982-03-05 Leybold Heraeus Sogev Pompe a vide rotative a joint d'huile

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008074362A1 (fr) * 2006-12-18 2008-06-26 Ateliers Busch Sa Corps de pompe à palettes
EP2963240A3 (fr) * 2014-07-04 2016-07-06 Pfeiffer Vacuum Gmbh Pompe à vide
DE102014109383B4 (de) 2014-07-04 2022-03-24 Pfeiffer Vacuum Gmbh Vakuumpumpe

Also Published As

Publication number Publication date
DE4017191A1 (de) 1991-12-05
JPH04231696A (ja) 1992-08-20
US5178522A (en) 1993-01-12
DE59103001D1 (de) 1994-10-27
EP0459107B1 (fr) 1994-09-21

Similar Documents

Publication Publication Date Title
DE2529317C2 (fr)
DE60015924T2 (de) Schraubenkompressor
EP1021653B1 (fr) Pompe a vide a vis refroidie
DE2325614C2 (de) Notsystem zur Zuführung eines Schmiermittels
DE4017194A1 (de) Drehschiebervakuumpumpe
DE2811679A1 (de) Oelversorgungshilfssystem
DE60124859T2 (de) Schraubenkompressor mit wassereinspritzung
EP0459107B1 (fr) Pompe à vide à palettes et son procédé d'approvisionnement en huile
DE2544685B2 (de) Taumelscheiben-Kompressor
DE2002762A1 (de) Gasturbine
DE102020107729B3 (de) Retarder mit gekühltem Dichtungssystem
EP1021654A1 (fr) Pompe a vide a vis pourvue de rotors
EP1936200B1 (fr) Pompe à vide à palettes étanchéifiée à l'aide de lubrifiants
DE3034941A1 (de) Mit aerosol arbeitende hilfs-schmiervorrichtung, insbesondere fuer fluggeraete
DE2833167A1 (de) Baueinheit, bestehend aus einer oelpumpe zur oelumlaufschmierung einer brennkraftmaschine und einer vakuumpumpe zur erzeugung eines vakuums fuer die bremskraftverstaerkung in kraftfahrzeugen
DE3033216A1 (de) Bohrmeissel-vorort-antriebsmaschine mit feststoffablenkung
DE1503398A1 (de) Motorkompressor in gekapselter Ausfuehrung
DE1939717A1 (de) Waelzkolbenpumpe
DE2226921A1 (de) Geschmierte lagerung
DE2948993A1 (de) Verdichter, insbesondere schraubenverdichter, mit schmiermittelkreislauf
DE2048301A1 (de) Meß- und Spulolpumpe
DE102021110772A1 (de) Zentrifugalkompressor
EP1113176A2 (fr) Pompe à vide avec joint d'étanchéité d'arbre
CH651362A5 (de) Selbstpumpendes hydrodynamisches gleitlager.
DE102021207713B3 (de) Antriebseinheit

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: A1

Designated state(s): CH DE FR GB IT LI

17P Request for examination filed

Effective date: 19920518

17Q First examination report despatched

Effective date: 19930720

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILANO S.P.A.

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19940928

REF Corresponds to:

Ref document number: 59103001

Country of ref document: DE

Date of ref document: 19941027

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19960208

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19960216

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19960227

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19960305

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19970330

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19970331

Ref country code: CH

Effective date: 19970331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19970330

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971128

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19971202

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050330