EP1479915A1 - Pompe à spirales - Google Patents

Pompe à spirales Download PDF

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Publication number
EP1479915A1
EP1479915A1 EP04001358A EP04001358A EP1479915A1 EP 1479915 A1 EP1479915 A1 EP 1479915A1 EP 04001358 A EP04001358 A EP 04001358A EP 04001358 A EP04001358 A EP 04001358A EP 1479915 A1 EP1479915 A1 EP 1479915A1
Authority
EP
European Patent Office
Prior art keywords
scroll pump
pump according
seal
flanks
spiral
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Withdrawn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
EP04001358A
Other languages
German (de)
English (en)
Inventor
Oliver Fickert
Hubert Engmann
Wolfgang Heinritz
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.)
Gardner Denver Thomas GmbH
Original Assignee
ILMVAC 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 ILMVAC GmbH filed Critical ILMVAC GmbH
Priority to DE112004000755T priority Critical patent/DE112004000755D2/de
Priority to PCT/EP2004/005258 priority patent/WO2004101998A1/fr
Publication of EP1479915A1 publication Critical patent/EP1479915A1/fr
Withdrawn legal-status Critical Current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
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • 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
    • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
    • 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
    • F04C29/0092—Removing solid or liquid contaminants from the gas under pumping, e.g. by filtering or deposition; Purging; Scrubbing; Cleaning
    • 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
    • F04C2210/00—Fluid
    • F04C2210/24—Fluid mixed, e.g. two-phase fluid
    • 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
    • F04C2240/10—Stators
    • F04C2240/102—Stators with means for discharging condensate or liquid separated from the gas pumped

Definitions

  • the present invention relates to a scroll pump - too Called spiral pump - for conveying gases or gas-condensate mixtures.
  • This pump has one inlet, one Outlet, a fixed stator disc and an oscillating one Rotor disc attached to a drive shaft is.
  • the stator disk and the rotor disk lie essentially parallel to each other and each spiral running flanks, forming variable Interlocking conveying spaces.
  • a rotating spiral pump is known from EP 0 579 888 A1 known in which the spiral ribs in several segments are divided to achieve high pressures and to avoid temperature-related tolerance problems.
  • the object of the present invention is therefore to provide an improved scroll pump, in which the accumulation of condensate in the delivery chamber is reduced. To the condensate occurring in the delivery chamber should be easily be discharged to the outside and even when the pump is stopped do not remain in the delivery room. Another part of the The present invention is also the inclination to reduce condensate formation within the delivery chamber. Finally, the aim of the invention is the scroll pump insensitive to aggressive media and the Size of the pump unit coupled to a drive motor to reduce.
  • the scroll pump according to the invention solved by the drive shaft in the operating state in is arranged substantially vertically, so that the disks in are essentially horizontal.
  • the flanks of the disks are therefore preferably vertical, since they are largely vertical run to the level of the disks.
  • the outlet also goes from the center of the disc below and is like this that any condensate present can flow away due to gravity.
  • This design prevents condensate from accumulating in the bottom Areas of the delivery room, because the condensate due to Gravity flows automatically to the outlet and from there can be delivered.
  • the scroll pump may have to occur Therefore, do not actively promote condensate, so that the Delivery performance is not affected.
  • the scroll pump has no output valve switched on.
  • the extracted gases or vapors can unblock the outlet happen without an opening pressure of an outlet valve would have to be overcome.
  • the medium does not experience any pressure increase conventional pumps always run the risk of condensation of vapors.
  • These changed pressure conditions basically reduce the tendency of vapors to Condense out, so that less condensate in the Funding area is created.
  • the drive shaft goes to which the conveyor disk is attached, directly in the output shaft of an electric motor is over or integrally formed with this.
  • the drive motor can be on positioned in the immediate vicinity of the scroll pump so that the overall size of the entire unit is minimized becomes. It also allows coupling elements between the shafts are dispensed with, which increases the assembly effort and reduce component costs.
  • embodiments can also have a different connection between scroll pump and drive motor. For example, standard flange motors can be attached to the pump be coupled.
  • Fig. 1 is a scroll pump according to the invention in one side sectional view shown.
  • the scroll pump has a housing 1 in which a fixed stator disk 2 and an oscillating rotor disc 3 are arranged are.
  • the fixed stator disc can be used simultaneously Be part of the housing 1.
  • Rotor disk 3 In modified embodiments could but also a reversed arrangement can be chosen.
  • the rotor disk 3 is coupled to a drive shaft 4, by which the pumping movement of the rotor disk is caused can be.
  • the drive shaft 4 is also a component of an electric motor 5 so that it acts as its output shaft acts.
  • the driving force provided by the engine is therefore without gear and clutch elements on the rotor disc 3 transferred. This simplifies the structure of the complete unit and reduces the required size. Modified embodiments can also be independent Use motors.
  • the two disks 2, 3 each have flanks 6, which are starting from the respective disc towards the opposite Extend the disc. Because the principle of operation a spiral or scroll pump to the specialist is known, the usual structure of the discs and the Flanks are not described in detail here. in principle the flanks 6 are spiral on each Disc arranged and engage in such a way that between them a variable delivery room 7 ready is provided.
  • the outlet 9 is preferably without the interposition of an output valve led out so that the condensate (and the conveyed Gas) depressurized from the scroll pump both during the Operational as well as drain in the idle state.
  • the pumped gas must also do without an outlet valve not be subjected to a pressure increase at the pump outlet, so that there is hardly any condensation.
  • Figure 2 shows a more detailed sectional view of a preferred one Embodiment of the scroll pump, which is further Show details.
  • the rotor disc 3 at an eccentric end of the Drive shaft 4 is coupled, whereby when the Drive shaft an eccentric movement of the rotor disc is caused, as is usual with scroll pumps.
  • Out Fig. 2 can also be seen that below the discs 2, 3, an electric fan 10 is arranged, which the Cooling air is supplied to the complete unit.
  • a fan wheel 16 can also be arranged above the motor 5, which is attached to the outer end of the motor shaft.
  • Fig. 3 the scroll pump is shown in a view from below.
  • the inlet 8 and the outlet 9 are on the side led away.
  • Fig. 4 shows a detailed view of the stator 2 and the Rotor disk 3. It can be seen that the respective flanks 6 start from a disc and adjacent to each other in Run towards the opposite pane.
  • a spiral seal 11 is arranged on each flank 6, wherein in 4 for simplification only a single spiral seal is shown.
  • the spiral seal 11 can by a sealing tape be formed, which to the media to be funded is adapted and also a low coefficient of friction should have to the oscillation of the rotor disk 3rd not hindering unnecessarily.
  • the spiral seal 11 lies on its side facing away from the flank 6 on the bottom surface of the opposite disc.
  • the spiral seal 11 is preferably inserted into a groove 12, which runs in the end face of the flank 6. Thereby that the spiral seal 11 slightly beyond the flank 6 protrudes, grinds the end face of flank 6 during the Operation of the pump is not on the bottom side of the opposite Disc. Also remains between the spiral seal 11 of the adjacent flank 6 and the opposite Disk a small channel 13, which is also when the Scroll pump allows condensate to drain. This Canal can be kept so small that the delivery rate the pump is hardly affected.
  • the scroll pump for example, with about 1,500 revolutions per minute can be operated to gases to promote. With the resulting flow velocities air gaps or channels are kept small enough not negatively impacting the output. It is because of it does not require the flanks 6 during rotation the rotor disk 3 abut each other. Rather it becomes a leave minimal air gap to prevent wear of the pump to keep small.
  • FIG. 5 shows the rotor disk 3 in a top view. Except the spiral seal 11 are still a circumferential inner Seal 14 and a circumferential outer seal 15 are provided.
  • the circumferential seals 14, 15 seal the entire Pump room again opposite the bearings and the environment. There are therefore no shaft seals or other gas-tight seals Connections to ball bearings required, resulting in a inexpensive and reliable construction results. Besides, is ensures that no pumped media into the environment arrive, so that the scroll pump is also for promotion aggressive substances. Done during operation in fact, a double seal, as the scoop space in primarily sealed by the spiral seal 11 and the further sealing by the circumferential seals 14, 15 takes place.
  • the circumferential seals exist preferably made of the same material as the spiral seal.
  • the Scroll pump equipped with a gas ballast feed.
  • a gas ballast feed In order to can be ambient air or inert gas during the compression phase be added to the medium to be conveyed, whereby the risk of undesirable condensation of vapors in the pump is further reduced.
  • a suitable inlet valve To the gas ballast feeder a suitable inlet valve can be connected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP04001358A 2003-05-19 2004-01-22 Pompe à spirales Withdrawn EP1479915A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112004000755T DE112004000755D2 (de) 2003-05-19 2004-05-15 Scrollpumpe
PCT/EP2004/005258 WO2004101998A1 (fr) 2003-05-19 2004-05-15 Pompe d'extraction

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20307911U DE20307911U1 (de) 2003-05-19 2003-05-19 Scrollpumpe
DE20307911U 2003-05-19

Publications (1)

Publication Number Publication Date
EP1479915A1 true EP1479915A1 (fr) 2004-11-24

Family

ID=27816408

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04001358A Withdrawn EP1479915A1 (fr) 2003-05-19 2004-01-22 Pompe à spirales

Country Status (2)

Country Link
EP (1) EP1479915A1 (fr)
DE (1) DE20307911U1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4701115A (en) * 1985-01-28 1987-10-20 Sanden Corporation Axial sealing mechanism for a scroll compressor
US5098265A (en) * 1989-04-20 1992-03-24 Hitachi, Ltd. Oil-free scroll fluid machine with projecting orbiting bearing boss
EP0846863A1 (fr) * 1996-06-24 1998-06-10 Daikin Industries, Limited Compresseur a vis sans fin
EP1199473A2 (fr) * 2000-10-20 2002-04-24 Anest Iwata Corporation Machine à spirales

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4701115A (en) * 1985-01-28 1987-10-20 Sanden Corporation Axial sealing mechanism for a scroll compressor
US5098265A (en) * 1989-04-20 1992-03-24 Hitachi, Ltd. Oil-free scroll fluid machine with projecting orbiting bearing boss
EP0846863A1 (fr) * 1996-06-24 1998-06-10 Daikin Industries, Limited Compresseur a vis sans fin
EP1199473A2 (fr) * 2000-10-20 2002-04-24 Anest Iwata Corporation Machine à spirales

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DDD
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 05 30 June 1995 (1995-06-30) *

Also Published As

Publication number Publication date
DE20307911U1 (de) 2003-09-04

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