EP0828941B1 - Compresseur a vis, a volume deplace reglable - Google Patents

Compresseur a vis, a volume deplace reglable Download PDF

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Publication number
EP0828941B1
EP0828941B1 EP96916080A EP96916080A EP0828941B1 EP 0828941 B1 EP0828941 B1 EP 0828941B1 EP 96916080 A EP96916080 A EP 96916080A EP 96916080 A EP96916080 A EP 96916080A EP 0828941 B1 EP0828941 B1 EP 0828941B1
Authority
EP
European Patent Office
Prior art keywords
housing
rotors
type compressor
screw
segment
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.)
Expired - Lifetime
Application number
EP96916080A
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German (de)
English (en)
Other versions
EP0828941A1 (fr
Inventor
Günter Kirsten
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Individual
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Individual
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Application filed by Individual filed Critical Individual
Publication of EP0828941A1 publication Critical patent/EP0828941A1/fr
Application granted granted Critical
Publication of EP0828941B1 publication Critical patent/EP0828941B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/10—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
    • F04C28/12—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using sliding valves
    • 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

Definitions

  • the invention relates to a screw compressor an adjustable delivery volume.
  • screw compressors have been developed where the one supplied by the screw compressor Feed rate over the compression ratio of the Screw compressor is adjustable.
  • DE-OS 25 26 175 shows a screw compressor adjustable volumetric capacity, in which two intermeshing rotors are arranged in a housing.
  • This screw compressor runs parallel to the Rotor axes of the screw compressor a return flow channel, of the closable openings with the interior of the housing is connectable.
  • the openings in the axial direction the rotors are spaced from each other, if they are open, a backflow of the to be compressed Medium through the return flow channel to Suction side of the screw compressor.
  • the openings, their overflow side Ends can be closed by means of a control piston are, but are also in their closed state open to the inside of the housing and thereby form overflow pockets, which is a backflow of the medium to be compressed cause even with 100% delivery.
  • the Screw compressors therefore have poor efficiency.
  • DE-PS 35 16 636 shows another screw compressor with adjustable delivery volume.
  • the medium to be compressed is with this screw compressor from an inlet channel conveyed to an outlet channel, the inlet channel two housing segments that can be moved along the rotor axes having.
  • the housing segments extend in the housing over the entire rotor length and are cantilevered at one end.
  • the across Longitudinal extent of the housing segments occurring Pressures recorded via guideways however, lead to bending stress on the housing segments.
  • In operation is by moving the housing segments towards the outlet duct channel wall delimiting the inlet channel so displaced that the inlet duct is extended and the compression starts later. By later use compression becomes the compression ratio and thus changing the feed rate of the screw compressor.
  • the one-sided cantilever required for this Storage of the housing segments has the Disadvantage of a high manufacturing effort. Furthermore are the tax segments that are characterized by the Extend the pressure side of the screw compressor, due to the on the pressure side of the screw compressor prevailing high pulsating pressures Vibrations stimulated, which lead to a deflection of the Guide guideways. Another disadvantage is finally, that the housing segments have a great length of the screw compressor and at the Pressure side of the screw compressor the constructive Restrict creative freedom.
  • the invention has for its object a screw compressor with adjustable delivery volume to be operated with low wear can, has a good efficiency and simple can be produced.
  • At least one housing segment is in the housing across the rotor axes in one Slidably guided shaft. Because of that on every housing segment acting pressure a resulting compressive force has the result that is approximately parallel to the direction of displacement of the housing segment, the Bearing of the housing segment only to a small extent charged. This not only leads to wear of the screw compressor is reduced, but also to make it easier to manufacture because of a elaborate storage of the housing segment is dispensed with can be. Because each housing segment on its the rotors sealing side facing the course of the envelope the rotor has the following geometry and since these sealing sides can always be positioned precisely, the screw compressor has a high efficiency on.
  • Slidable Housing segments can thus be particularly well use with double screw compressors.
  • Control cams provided on a common Camshaft can be arranged and the housing segments move.
  • the adjustment by means of control cams is not only inexpensive, but also guarantees also that the location of all housing segments, that determine the geometry of the inlet duct, precisely is coordinated adjustable. Allow the control cams it also, at least one of the housing segments into one Position to move in as it is in the intake port arranged throttle acts.
  • each housing segment in Axial direction of the rotors arranged one behind the other.
  • the rotor has a length that corresponds to the axial distance of the Points of contact between two engaged tooth pairs corresponds. Since the compression only starts anyway, if one of the tooth flanks and the inner Housing wall defined compression chamber closed is a finer and due to an increased manufacturing effort smaller gradation with housing segments not mandatory. Nevertheless, fine adjustments can be made the funding rate in such a way Achieve housing segments in that a housing segment is moved more or less so that the Intake channel regardless of its effective length Throttle effect shows.
  • each housing segment is transverse to the axial direction the rotor is dimensioned such that the through caused the displacement of each housing segment Volume change of the inlet channel to the volume of a compression chamber delimited by two tooth flanks of the rotors corresponds to one setting the feed rate according to the discrete gradations of the rotor avoid throttling effects that lead to a unfavorable efficiency.
  • the housing segments with each two stop surfaces that indicate the movability of the housing segments limit towards the rotors and the preferably on two parallel to the shaft Abutment surfaces can be achieved that the distance of the housing segments to the rotors is precise can be met. Precise compliance with the Distance between the housing segments and the rotors ensures high efficiency.
  • FIG. 1 shows a housing jacket 10 of a housing 12 a first embodiment of an inventive Screw compressor 14.
  • the housing jacket 10 has one essentially cylindrical in cross-section two parallel enveloping circular cylinders Circumferential wall 16 on the suction end of the screw compressor 14 one with the peripheral wall 16 integrally cast housing cover 18 is provided.
  • the housing jacket 10 has a housing inner wall 20 on whose course the envelope of two in the housing 12 rotors to be arranged follows.
  • the in Figs. 1-7 rotors, not shown, are in the housing on the suction side stored by means of a plain bearing each arranged in bearing receptacles 22, 24 of the housing cover 18 is.
  • the rotors point when installed an installation position, which is shown in the drawings by the Position of the longitudinal axes 26, 28 of the main or secondary rotor is specified.
  • the housing jacket has on its pressure side End of the housing cover 18 facing away from a flange 30, in which threaded holes 32 are provided, which allow the housing jacket 10 on a (not shown) to determine the pressure-side connection block.
  • the connection block can also be used as a connection block for a total of four Double screw compressor with rotors his.
  • the housing jacket 10, which holds the main and of the secondary rotor is pot-shaped on its underside a base 34, which itself parallel to the longitudinal axis 26 of the main rotor rotor and the longitudinal axis 28 of the secondary rotor.
  • the inner cross section is wider than the diameter of the envelope of the rotors.
  • the annular groove 56 only extends about a quarter of the length of the rotors and points below the rotors a control edge 58, which the Area of the inner wall sealingly enclosing the rotors delimited from the annular groove 56.
  • the Housing segments 38, 40, 42, 44 in the shaft 46 in the direction the double arrow B (Fig. 2) are moved. If all housing segments 38, 40, 42, 44 in their upper stop position are (Fig. 5) through a feed channel provided with an inlet connection 60 and the annular groove 56 forms an inlet channel 62 (Fig. 2), which allows air to be supplied to the rotors. If all housing segments 38,40,42,44 themselves are in their upper stop position, the begins Compression as soon as a tooth of a rotor passes the control edge 58 runs over. However, if a housing segment, for example, the housing segment 38 is lowered (Fig.
  • the housing segments 38, 40, 42, 44 are each plate-like Bodies with guide blocks on their narrow sides 68,70 have, each on the housing enclose firmly arranged guide cylinder 72.74 and are slidably mounted on it.
  • the Guide blocks 68, 70 each have an upper stop surface 76.78 with which the housing segment in its upper stop position on abutment surfaces 80,82 of the housing 12 abuts.
  • the abutment surfaces 80.82 each extend in the direction of the rotor axes across the width of the four housing segments 38.40.42.44.
  • Each housing segment 38, 40, 42, 44 according to the first embodiment is through a first and second Spiral spring 84.86, each the associated guide cylinder 72.74 surrounding, are arranged in their upper stop position pressed.
  • one camshaft 96 provided with control cams 88,90,92,94 provided parallel to the longitudinal axis of the Main rotor rotor and the secondary rotor rotor extends 26.28 and by means of a stepping motor for relocation the housing segments 38, 40, 42, 44 in their open position is rotatable according to arrow D in FIG. 5.
  • To one Force application of the control cams 88, 90, 92, 94 to the housing segments 38.40.42.44 to enable the Housing segments 38, 40, 42, 44 each have a cutout 98 in which one on the respective control cam 88.90, 92,94 adjacent control pin 100 protrudes.
  • the Control pin 100 is on the side facing away from the rotors Side of cutout 98 of each housing segment 38, 40, 42,44 arranged so that rotation of the camshaft 96 with a control cam 88.90, 92.94 Control pin a shift of the respective housing segment 38,40,42,44 against the bias of the respective causes first and second coil spring 72,74.
  • FIGS and 7 differs from that shown in Figures 1 to 5 Embodiment only through the design of the actuator for the housing segments.
  • reference numerals are used, which correspond to the corresponding Reference numerals of the first embodiment around 100 are increased. To avoid repetitions on the description of the corresponding parts in the referred to the first embodiment.
  • first and second coil springs 84,86 the housing segments in their Press the closed position, press the corresponding first and second coil springs 184 ', 186' in the second embodiment the respective housing segment 138 'in its Open position. It is accordingly in those provided in the second embodiment Control cam 188 in contrast to the first embodiment around locking cams, one on the respective housing segment 138 'provided in a cutout 198' Control pin when the camshaft 196 rotates in this way release that the corresponding housing segment in shifted to its open position shown in Figure 6 becomes.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Screw Conveyors (AREA)
  • Refuse Collection And Transfer (AREA)

Claims (8)

  1. Compresseur à vis à volume déplacé réglable, équipé d'au moins un rotor principal et d'au moins un rotor secondaire, lesquels sont disposés dans un boítier (12) commun, s'emboítent les uns dans les autres et transportent un agent à compresser d'un canal d'admission (62) vers un canal d'évacuation, le canal d'admission (62) étant limité par au moins un segment de boítier (38, 40, 42, 44) disposé de façon coulissante dans le boítier (12), ledit segment de boítier suivant le tracé de l'enveloppante des rotors sur son côté étanche tourné vers les rotors, ledit au moins un segment de boítier (38, 40, 42, 44) étant guidé de façon coulissante transversalement aux axes de rotor (26, 28) dans un puits (46), caractérisé
       en ce que des cames de commande (88, 90, 92, 94) sont prévues pour le déplacement dudit au moins un élément de boítier (38, 40, 42, 44).
  2. Compresseur à vis selon la revendication 1, caractérisé en ce que chaque segment de boítier (38, 40, 42, 44) présente dans la direction axiale des rotors une longueur qui correspond à l'espacement axial des points de contact de deux paires de dents qui s'engrènent.
  3. Compresseur à vis selon l'une quelconque des revendications 1 ou 2, caractérisé en ce qu'il est prévu au moins deux segments de boítier (38, 40, 42, 44) qui sont disposés respectivement dans la direction axiale des rotors les uns derrière les autres et de façon contiguë.
  4. Compresseur à vis selon l'une quelconque des revendications 1 à 3, caractérisé en ce que chaque segment de boítier présente respectivement deux surfaces de butée (76, 78) qui délimitent la mobilité du segment de boítier (38, 40, 42, 44) dans le sens des rotors.
  5. Compresseur à vis selon l'une quelconque des revendications 1 à 4, caractérisé en ce que deux surfaces de contre-appui (80, 82) s'étendant perpendiculairement au sens de déplacement (B) du segment de boítier (38, 40, 42, 44) sont formées sur le boítier.
  6. Compresseur à vis selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le segment de boítier (38, 40, 42, 44) est précontraint au moyen de ressorts (84, 86).
  7. Compresseur à vis selon l'une quelconque des revendications 1 à 6, caractérisé en ce que plusieurs cames de commande (88, 90, 92, 94) pour plusieurs segments de boítier sont disposées sur un arbre à cames (96) commun.
  8. Compresseur à vis selon l'une quelconque des revendications 1 à 7, caractérisé en ce que chaque came de commande (88, 90, 92, 94) pousse dans sa position d'ouverture le segment de boítier (38, 40, 42, 44) correspondant contre la précontrainte des ressorts (84, 86).
EP96916080A 1995-05-31 1996-05-15 Compresseur a vis, a volume deplace reglable Expired - Lifetime EP0828941B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19519262A DE19519262C2 (de) 1995-05-31 1995-05-31 Schraubenverdichter mit einstellbarem Fördervolumen
DE19519262 1995-05-31
PCT/EP1996/002077 WO1996038670A1 (fr) 1995-05-31 1996-05-15 Compresseur a vis, a volume deplace reglable

Publications (2)

Publication Number Publication Date
EP0828941A1 EP0828941A1 (fr) 1998-03-18
EP0828941B1 true EP0828941B1 (fr) 2001-01-31

Family

ID=7762876

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96916080A Expired - Lifetime EP0828941B1 (fr) 1995-05-31 1996-05-15 Compresseur a vis, a volume deplace reglable

Country Status (9)

Country Link
US (1) US6022203A (fr)
EP (1) EP0828941B1 (fr)
JP (1) JPH11505912A (fr)
KR (1) KR100426506B1 (fr)
CN (1) CN1081756C (fr)
AT (1) ATE199032T1 (fr)
DE (2) DE19519262C2 (fr)
RU (1) RU2154194C2 (fr)
WO (1) WO1996038670A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999050560A1 (fr) * 1998-03-31 1999-10-07 Lysholm Technologies Ab Compresseur a rotor a vis a partie de paroi mobile
SE9801137D0 (sv) 1998-03-31 1998-03-31 Lysholm Techn Ab Skruvrotorkompressor med rörligt väggparti
US6705849B2 (en) * 2002-07-22 2004-03-16 Carrier Corporation Discharge porting design for screw compressor
US7726285B1 (en) * 2005-04-01 2010-06-01 Hansen Craig N Diesel engine and supercharger
US7993120B2 (en) * 2005-09-07 2011-08-09 Carrier Corporation Slide valve
US8813492B2 (en) * 2009-10-14 2014-08-26 Hansen Engine Corporation Internal combustion engine and supercharger
US8539769B2 (en) 2009-10-14 2013-09-24 Craig N. Hansen Internal combustion engine and supercharger
WO2011149444A1 (fr) * 2010-05-28 2011-12-01 Hansen Craig N Moteur et compresseur
DE102020000350A1 (de) * 2020-01-21 2021-07-22 Ralf Steffens Volumenverhältnis bei einem R718*-Verdichter
CN116480588B (zh) * 2023-04-18 2024-02-23 北京通嘉宏瑞科技有限公司 定子及真空泵

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3151806A (en) * 1962-09-24 1964-10-06 Joseph E Whitfield Screw type compressor having variable volume and adjustable compression
GB1517156A (en) * 1974-06-21 1978-07-12 Svenska Rotor Maskiner Ab Screw compressor including means for varying the capacity thereof
DE2658047A1 (de) * 1976-12-22 1978-06-29 Guenter Kirsten Verfahren und vorrichtung zum stufenlosen regeln eines schraubenverdichters
SE432465B (sv) * 1980-06-02 1984-04-02 Sullair Tech Ab Ventilarrangemang for kapacitetsreglering av skruvkompressorer
SE429782B (sv) * 1981-05-14 1983-09-26 Sullair Tech Ab Ventilarrangemang for kapacitetsreglering av skruvkompressorer
SE442323B (sv) * 1984-05-11 1985-12-16 Svenska Rotor Maskiner Ab Skruvkompressor med tvaa individuellt foerskjutbara reglerslider
JPH07107395B2 (ja) * 1990-11-06 1995-11-15 本田技研工業株式会社 スクリュー型ポンプ

Also Published As

Publication number Publication date
WO1996038670A1 (fr) 1996-12-05
RU2154194C2 (ru) 2000-08-10
KR100426506B1 (ko) 2004-06-30
EP0828941A1 (fr) 1998-03-18
ATE199032T1 (de) 2001-02-15
DE19519262A1 (de) 1996-12-05
DE19519262C2 (de) 1997-08-28
CN1185823A (zh) 1998-06-24
CN1081756C (zh) 2002-03-27
DE59606412D1 (de) 2001-03-08
JPH11505912A (ja) 1999-05-25
KR19990022050A (ko) 1999-03-25
US6022203A (en) 2000-02-08

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