EP0332078B1 - Ringkanalgebläse - Google Patents

Ringkanalgebläse Download PDF

Info

Publication number
EP0332078B1
EP0332078B1 EP89103757A EP89103757A EP0332078B1 EP 0332078 B1 EP0332078 B1 EP 0332078B1 EP 89103757 A EP89103757 A EP 89103757A EP 89103757 A EP89103757 A EP 89103757A EP 0332078 B1 EP0332078 B1 EP 0332078B1
Authority
EP
European Patent Office
Prior art keywords
ring channel
channel
blower according
ring
section
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
EP89103757A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0332078A1 (de
Inventor
Peter Wieja
Georg Bächle
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.)
Webasto SE
Original Assignee
Webasto SE
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 Webasto SE filed Critical Webasto SE
Publication of EP0332078A1 publication Critical patent/EP0332078A1/de
Application granted granted Critical
Publication of EP0332078B1 publication Critical patent/EP0332078B1/de
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
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D23/00—Other rotary non-positive-displacement pumps
    • F04D23/008—Regenerative pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/009—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by bleeding, by passing or recycling fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation

Definitions

  • the invention relates to an annular duct blower, which is intended in particular for conveying combustion air in heaters, such as vehicle heaters.
  • an annular channel is formed in a housing part of the annular channel blower, which has an inlet opening and an outlet opening and an interposed web-shaped interrupter.
  • the ring channel blower has an impeller fitted with blades.
  • a bypass channel can usually be provided between the inlet opening and the outlet opening, which can be adjusted by means of an adjusting screw.
  • the covering section is designed as a kidney-shaped contour, the tip of which is directed against the flow in the middle of the channel. Starting from this tip, the covering section tapers towards the inner and outer edges of the ring channel. Furthermore, the covering section also has a tapering contour on both sides in the axial direction. The production of such a geometry proves to be complex, so that it can only be used economically with blowers of higher output.
  • a ring duct blower manufactured according to the features of claim 1 fulfills the above criteria.
  • the noise level can be reduced to such an extent that intake silencers can also be dispensed with in the case of ring duct blowers of lower output.
  • the section that emerges as essential according to the invention and covers the annular channel to achieve a gradual transition has the effect, in the inventive design of the annular channel blower, that there is no sudden pressure surge at the compression end of the annular channel by an abrupt transition from the annular channel to the outlet opening, but rather that in the Air conveyed in a ring channel gradually runs to the outlet opening.
  • the ring duct blower according to the invention there is no whistle caused by a sudden pressure surge.
  • the ends of the section covering the ring channel which transitions to the inner edge and / or to the outer edge of the ring channel are formed spirally.
  • the section covering the ring channel is crescent-shaped or sail-shaped, and the tip of the section ends at the outer edge of the ring channel and points counter to the compression direction.
  • the ring channel itself can be contoured at least in the inlet area in such a flow-favorable manner that, seen in the direction of flow, there is a gradual transition from the inlet opening to the base of the ring channel.
  • the flow resistance in the inlet area of the ring duct blower is reduced in order to improve the efficiency of the ring duct blower.
  • the annular channel is contoured in such a flow-favorable manner in the area of the outlet that, seen in the direction of flow from the bottom of the annular channel, there is a gradual transition to the outlet opening.
  • the flow resistance at the outlet area of the ring duct blower is thus also reduced in order to further improve the overall efficiency of the ring duct blower.
  • transition radii the term “transition radii” being understood not only in terms of area but also spatially, based on the shape of the ring channel.
  • the section covering the ring channel preferably has a curved limiting curve, the ++++ curvature of which is between 3R and R - r 2nd lies, where R is the radius of the outer edge of the ring channel and r is the radius of the inner edge of the ring channel, ie R - r is the width of the ring channel.
  • R is the radius of the outer edge of the ring channel
  • r is the radius of the inner edge of the ring channel
  • ie R - r is the width of the ring channel.
  • the course of the section covering the ring channel can largely be chosen as desired, and curves of this area can also be combined with one another. Projected onto approximately the center of the outlet opening, the section covering the ring channel thus extends at most approximately over an angular range of 80 °, counter to the compression direction of the ring channel blower.
  • modified curved boundary lines can also be determined, in which, for example, two or more different radii of curvature are combined.
  • the aerodynamically contoured gradually extends Transition from the inlet opening to the bottom of the ring channel and / or from the bottom of the ring channel to the outlet opening in each case over a range of at most 20% of the length of the ring channel. This ensures that a sufficient length of the ring channel is available for the compression process to be carried out in the ring channel blower and for the conveying process.
  • the noise emission in the ring duct blower can surprisingly also be reduced by the fact that the bypass duct runs in an approximately perpendicular to the ring duct plane and between the inner edge and the outer edge of the annular channel extending partition between the inlet opening and the outlet opening is provided.
  • This bypass duct is therefore not provided in the peripheral surface near the bottom of the ring duct, since an abrupt transition would also occur at this point when the bypass duct is open, but it is arranged in the ring duct blower according to the invention in the region of the outlet and provides a connection Outlet to inlet, which is as close as possible to the mouth opening of the outlet.
  • the air flow has already been evened out and calmed down at this point, so that whistling noises are also avoided at this point.
  • the bypass channel is preferably designed as an elongated slot-shaped opening in the partition, so that it can be manufactured in a manner that is simple in terms of production technology.
  • the respective desired cross section can also be adjusted in a relatively large way.
  • the bypass channel In order to obtain a gradual transition from the outlet area to the inlet area also in the area of the bypass channel, the bypass channel, relative to the outer edge of the ring channel, is arranged inclined in the direction of the outlet opening in the partition. Generally speaking, it can thus be said that this bypass channel points obliquely towards the center of the housing part containing the ring channel.
  • the bypass duct preferably encloses an acute angle with respect to the outer edge of the ring duct.
  • the acute angle is suitably in a range from approximately 20 ° to approximately 45 °, and is preferably approximately 38 °. These angles of inclination have proven to be expedient on the basis of tests.
  • the adjusting screw for adjusting the opening cross section of the bypass channel is also with respect to the outer wall of the the housing part containing the annular channel is arranged inclined, ie that the thread for adjusting the adjusting screw is cut into the housing part, approximately in the direct extension of the central axis of the elongated, slot-shaped opening in the partition.
  • angles of inclination are preferably approximately in the same range as the acute angle in the bypass channel, so that the angle of inclination is in a range of approximately 20 ° to approximately 45 ° and preferably the angle of inclination is approximately 38 °.
  • 1 denotes the ring channel blower, which has a housing part 2 and an impeller 3 which is equipped with blades and which is indicated in broken lines in FIG. 1.
  • the impeller 3 is driven in rotation by a motor, not shown, an electric motor.
  • an annular channel 4 is formed with an approximately semicircular cross section. This semicircular cross section extends from an outer edge 5 over a deepest point of the ring channel 4, i.e. a so-called bottom 7 of the ring channel 4 to an inner edge 6, which, viewed in the axial direction of the housing part 2, lies approximately at the same height as the outer edge 5.
  • the outer edge 5 of the ring channel 4 has a radius R and the inner edge 6 has a radius r.
  • 8 denotes an inlet opening of the ring channel blower 1 and 9 an outlet opening thereof.
  • the outlet opening 9 can be seen in broken lines.
  • the inlet opening 8 and the outlet opening 9 point approximately in the same direction, namely in the direction of the rear of the housing part 2, as can be seen from FIG. 2.
  • Fresh air enters from the environment, for example, as combustion air, via an air inlet connection, not shown.
  • the direction of compaction is entered in FIG. 1 with an arrow.
  • the ring channel 4 is covered by a section 11 on the side facing the impeller 3 against the compression direction or upstream.
  • This section 11 is crescent-shaped or sail-shaped in the example shown and it has a curved Limiting curve 12, which starts from the inner edge 6 of the ring channel 4 and ends in a kind of tip 13 on the outer edge 5 of the ring channel 4.
  • the section 11 covering the ring channel 4 thus tapers continuously, starting from the inner edge 6 to the outer edge 5 of the ring channel 4.
  • the curved boundary curve 12 is not sharp-edged, but is slightly chamfered or rounded.
  • the transition 14 of the section 11 to the inner edge 6 is also expediently rounded and can be designed as a spiral seen in space.
  • the transition 15 of the section 11 to the outer edge 5 is expediently also rounded or seen in a spiral shape in space.
  • this sail-shaped section 11 covering the annular channel 4 extends approximately over an angular range of 80 °.
  • the curved limiting curve 12 shown is of course only to be understood as an example and, depending on the dimensions of the ring channel 4, this can have a curvature that is between 3R and ( R - r 2nd ) lies.
  • the radius of curvature in the range from three times the radius R of the outer edge 5, starting from the maximum value can be selected up to approximately the minimum value, which is approximately equal to half the width B of the ring channel 4.
  • a web-shaped interrupter 16 is provided which separates the inlet opening 8 from the outlet opening 9 and vice versa.
  • the web-shaped interrupter 16 is designed in the ring duct blower 1 in such a way that a section 17 is obtained at the inlet area, the boundary edge 18 of which is approximately formed as a tangent to the circle of the inner edge 6.
  • This section 17 is also inclined in relation to the plane stretched between the outer edge 5 and the inner edge 6 of the ring channel 4 in the direction of the base 7 of the ring channel 4. This inclination is only slight and can be approximately 12 °, for example.
  • the section 17 partially covers the projection of the inlet opening 8 onto the ring channel 4, so that the air stream flowing in via the inlet opening 8 is already deflected such that it enters the ring channel 4 tangentially.
  • the portion 17 of the web-shaped breaker 16 is designed in a corresponding manner at the inlet area, so that both the The inlet area as well as the outlet area of the ring channel blower 1 is contoured as a whole in terms of flow, ie that protruding sharp edges in the area of the air flow course are avoided. At all deflection areas, gradual, i.e.
  • the outlet with the outlet opening 9 has a greater axial length than the inlet with the inlet opening 8.
  • the outlet also has the outlet opening 9 over the inlet with the inlet opening 8 over.
  • this need not necessarily be the case, but this form of training essentially depends on the design of the burner to be supplied with combustion air by means of the annular duct blower 1 and on the available installation space.
  • the ring duct 4 is contoured in such a streamlined manner at least in the region of the inlet with the inlet opening 8 and optionally also in the region of the outlet with the outlet opening 9 that there is a gradual transition in the inflow direction or outflow direction from the inlet to the bottom 7 of the ring channel 4 or from the bottom 7 of the ring channel 4 to the outlet opening 9.
  • These aerodynamically contoured sections of the ring channel 4, which form a gradual transition and on which the ring channel 4 does not yet have its maximum channel cross section, preferably each extend over a range of at most 20% of the length of the ring channel 4.
  • the bypass channel 20 is formed in a partition 21 which extends approximately in the axial direction of the housing part 2 and represents an extension of the web-shaped interrupter 16.
  • the partition wall 21 extends approximately perpendicular to the plane of the ring channel 4 or to the plane passing through the base 7, and the partition wall 21 extends on the side of the housing part 2 facing away from the ring channel 4 approximately between the outer edge 5 and the inner edge 6 this partition wall 21 directly adjoins the inlet opening 8 and the outlet opening 9 lying side by side in the circumferential direction.
  • the bypass channel 20 extends obliquely in this partition to the outer edge 5 of the ring channel 4 and thus closes an angle to the outer edge 5 a.
  • the bypass channel 20 starts approximately from the height of the inlet opening 8 and extends in the form of an elongated, slot-shaped opening in the partition wall 21 in the direction of the outlet opening 9.
  • the angle of the central axis of the elongated bypass channel 20 which is included in this case with the outer edge 5 of the annular channel 4 can be seen in are in a range from approximately 20 to approximately 45 ° and, according to a preferred embodiment, it is approximately 38 °. So it is an acute angle.
  • a bore 22 is made in the housing part 2, which also extends at an angle to the outer edge 5 of the ring channel 4.
  • This bore 22 is threaded and an adjusting screw 23 is inserted into the threaded bore 22 as an actuator.
  • the set screw 23 is accessible from the outside 24 of the housing part 2.
  • the set screw 23 can be turned in a corresponding manner in order to set the desired free passage cross section of the bypass channel 20.
  • the bypass duct 20 is placed closer to the outlet opening 9 of the ring duct blower 1, the air flow emerging and compressed via the outlet region of the ring duct blower 1 has already calmed down and has been standardized with regard to its flow behavior, so that when a via the bypass duct 20 Direct connection from the outlet with the outlet opening 9 to the inlet with the inlet opening 8 is established, the swirling of the air flow is largely reduced and therefore a largely silent passage of the air from the outlet to the inlet is also achieved in the area of the bypass channel 20.
  • the area in which the curvature of the limiting curve 12 of the section 11 lies is illustrated with a hatched area.
  • the upper and lower tolerance ranges with regard to changes from the family of curves in the above-mentioned ranges are indicated by border hatching.
  • the curve labeled C1 has a radius of 3R, while the curve labeled C2 has a radius R - r 2nd Has. This defines the upper and lower limits of the area of curvature.
  • the boundary edge 12 need not have a uniform curvature, but combinations of at least two different curvatures can also be realized, the design advantageously being such that there are no sharp edges at the transitions between the curve sections different curvatures.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Air Supply (AREA)
EP89103757A 1988-03-06 1989-03-03 Ringkanalgebläse Expired - Lifetime EP0332078B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3807362 1988-03-06
DE3807362 1988-03-06
DE3822267A DE3822267A1 (de) 1988-03-06 1988-07-01 Ringkanalgeblaese
DE3822267 1988-07-01

Publications (2)

Publication Number Publication Date
EP0332078A1 EP0332078A1 (de) 1989-09-13
EP0332078B1 true EP0332078B1 (de) 1991-09-18

Family

ID=25865601

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89103757A Expired - Lifetime EP0332078B1 (de) 1988-03-06 1989-03-03 Ringkanalgebläse

Country Status (4)

Country Link
US (1) US4932833A (enrdf_load_stackoverflow)
EP (1) EP0332078B1 (enrdf_load_stackoverflow)
JP (1) JPH01271698A (enrdf_load_stackoverflow)
DE (2) DE3822267A1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19638847C5 (de) * 1996-09-21 2006-01-26 J. Eberspächer GmbH & Co. KG Seitenkanalgebläse, insbesondere für die Verbrennungsluftzuführung bei einem Standheizgerät eines Kraftfahrzeugs

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0450362B1 (en) * 1990-03-28 1994-03-02 Coltec Industries Inc Toric pump
IT1240003B (it) * 1990-04-24 1993-11-27 Nuovopignone-Industrie Meccaniche Efonderia Perfezionamenti in un compressore di tipo rigenerativo a camera toroidale
SE9002323D0 (sv) * 1990-07-02 1990-07-02 Volvo Flygmotor Ab Vaermeanordning
DE19780705C1 (de) * 1996-07-16 2002-02-07 Eberspaecher J Gmbh & Co Seitenkanalgebläse, insbesondere für die Verbrennungsluftzuführung bei einem Standheizgerät eines Kraftfahrzeugs
DE19840635B4 (de) * 1998-09-05 2004-08-26 Webasto Thermosysteme Gmbh Ringkanalgebläse
DE19849836C1 (de) * 1998-10-29 1999-10-21 Webasto Thermosysteme Gmbh Ringkanalgebläse und Verfahren zur Montage eines solchen
DE19906515C1 (de) * 1999-02-17 2000-02-03 Webasto Thermosysteme Gmbh Seitenkanalgebläse
RU2156863C1 (ru) * 1999-05-12 2000-09-27 Анохин Владимир Дмитриевич Роторно-вихревая машина
DK1193369T3 (da) * 1999-05-12 2005-11-14 Vladimir Dmitrievich Anokhin Roterende hvirvelmaskine
US7033137B2 (en) 2004-03-19 2006-04-25 Ametek, Inc. Vortex blower having helmholtz resonators and a baffle assembly
DE102004019868A1 (de) * 2004-04-23 2005-11-24 J. Eberspächer GmbH & Co. KG Gebläse, insbesondere Verbrennungsluftgebläse für ein Heizgerät
DE102008056105B4 (de) * 2008-11-06 2011-02-03 Pierburg Gmbh Seitenkanalgebläse, insbesondere Sekundärluftgebläse für eine Verbrennungskraftmaschine
WO2019047471A1 (zh) * 2017-09-07 2019-03-14 中山大洋电机股份有限公司 一种风轮及其应用于鼓风机
US11371515B2 (en) 2017-11-03 2022-06-28 Fisher & Paykel Healthcare Limited Regenerative blower

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2817296A (en) * 1954-11-24 1957-12-24 Fabig Georg Centrifugal pumps
DE6604782U (de) * 1964-07-17 1970-02-19 Becker Gmbh Geb Unterbrecher bei seitenkanalverdichtern
US3356033A (en) * 1965-10-22 1967-12-05 Ford Motor Co Centrifugal fluid pump
DE2258737A1 (de) * 1972-11-30 1974-06-06 Elektror Karl W Mueller Elektr Seitenkanalverdichter
JPS4995213A (enrdf_load_stackoverflow) * 1973-01-16 1974-09-10
US3989411A (en) * 1975-07-14 1976-11-02 British Gas Corporation Silencing vane for toroidal blower
DE2531740C2 (de) * 1975-07-16 1989-08-10 British Gas Corp., London Seitenkanalgebläse
DE3014425C2 (de) * 1980-04-15 1986-06-12 Friedrich 8541 Röttenbach Schweinfurter Seitenkanalpumpe
JPS5724493A (en) * 1980-07-21 1982-02-09 Hitachi Ltd Vortex flow blower
DE3209904C2 (de) * 1982-03-18 1991-05-08 Webasto-Werk W. Baier GmbH & Co, 8035 Gauting Ringkanalgebläse

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19638847C5 (de) * 1996-09-21 2006-01-26 J. Eberspächer GmbH & Co. KG Seitenkanalgebläse, insbesondere für die Verbrennungsluftzuführung bei einem Standheizgerät eines Kraftfahrzeugs

Also Published As

Publication number Publication date
DE3822267A1 (de) 1989-12-07
US4932833A (en) 1990-06-12
EP0332078A1 (de) 1989-09-13
JPH01271698A (ja) 1989-10-30
DE58900290D1 (de) 1991-10-24
DE3822267C2 (enrdf_load_stackoverflow) 1990-11-08

Similar Documents

Publication Publication Date Title
EP0332078B1 (de) Ringkanalgebläse
DE3907504C2 (de) Turbine mit einer zweifach spiralförmigen Struktur
EP2418389B1 (de) Flügelrad für einen ventilator
DE602004001908T2 (de) Kompressor
DE69216938T2 (de) Verdichtergehäuse für Turbolader
DE3137114A1 (de) Axialgeblaese, insbesondere fuer kraftfahrzeuge
DE102012004617A1 (de) Axialventilator
EP1616101A1 (de) L fter
WO2009012990A1 (de) Radialverdichter mit einem diffusor für den einsatz bei einem turbolader
DE2531323A1 (de) Elektrisches geblaese
DE3304297A1 (de) Axialgeblaese, insbesondere fuer kuehler einer wassergekuehlten brennkraftmaschine
EP1193399B1 (de) Radialgebläse, insbesondere für Beatmungsgeräte
WO2011064281A2 (de) Flügenzellenpumpe
DE19549020A1 (de) Abgasregeleinrichtung für einen Turbolader
DE10258386A1 (de) Pumpenrad für Kraftstoffpumpe
DE3447007A1 (de) Seitenkanalgeblaese
DE10024741B4 (de) Seitenkanalpumpe
DE10112551C2 (de) Turbolader
DE19913950A1 (de) Seitenkanalverdichter
DE102014224657A1 (de) Klimatisierungsanlage mit Radialgebläse
DE3528225A1 (de) Turbolader
EP3114354B1 (de) Lüfterrad eines axiallüfters
DE2637985A1 (de) Einrichtung zur erzeugung einer drallbewegung der zylinderladung fuer eine ventilgesteuerte kolbenbrennkraftmaschine
EP0753657B1 (de) Ansaugluftleitung für einen Verbrennungsmotor
DE19814187B4 (de) Ansaugkanal für eine Verbrennungskraftmaschine

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): DE FR GB SE

17P Request for examination filed

Effective date: 19890927

17Q First examination report despatched

Effective date: 19901102

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB SE

REF Corresponds to:

Ref document number: 58900290

Country of ref document: DE

Date of ref document: 19911024

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
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
EAL Se: european patent in force in sweden

Ref document number: 89103757.4

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

Ref country code: FR

Payment date: 19960318

Year of fee payment: 8

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

Ref country code: GB

Payment date: 19970212

Year of fee payment: 9

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

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: GB

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

Effective date: 19980303

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

Effective date: 19980303

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

Ref country code: DE

Payment date: 20050224

Year of fee payment: 17

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

Ref country code: SE

Payment date: 20050304

Year of fee payment: 17

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

Ref country code: SE

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

Effective date: 20060304

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

Ref country code: DE

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

Effective date: 20061003

EUG Se: european patent has lapsed