EP0605821B1 - Hotte d'évacuation de fumées - Google Patents

Hotte d'évacuation de fumées Download PDF

Info

Publication number
EP0605821B1
EP0605821B1 EP93120268A EP93120268A EP0605821B1 EP 0605821 B1 EP0605821 B1 EP 0605821B1 EP 93120268 A EP93120268 A EP 93120268A EP 93120268 A EP93120268 A EP 93120268A EP 0605821 B1 EP0605821 B1 EP 0605821B1
Authority
EP
European Patent Office
Prior art keywords
waste gas
hood
gas catch
jacket
flow
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
EP93120268A
Other languages
German (de)
English (en)
Other versions
EP0605821A1 (fr
Inventor
Rüdiger Dr. Dipl.-Ing. Detzer
György J. Dipl.-Ing. Borbely
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.)
Kessler and Luch GmbH
Original Assignee
Kessler and Luch 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
Priority claimed from DE19924243834 external-priority patent/DE4243834C3/de
Application filed by Kessler and Luch GmbH filed Critical Kessler and Luch GmbH
Publication of EP0605821A1 publication Critical patent/EP0605821A1/fr
Application granted granted Critical
Publication of EP0605821B1 publication Critical patent/EP0605821B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area

Definitions

  • the invention relates to an exhaust gas detection hood for detecting contaminated air or other gases, in particular from elongated sources with a stabilized swirl flow, in which the hood is delimited by two mutually parallel, apertured end faces and has a jacket running between them, which in the area of the open suction areas emerging flow to accelerate it has a feed.
  • a ridge ventilation with at least one longitudinal roof rider is provided in the ridge of the hall, which is provided with air outlets opening outwards.
  • Roof attachments of this type are known in a wide variety of forms, and the individual embodiments are essentially concerned with ensuring that indoor air is unaffected by the weather. In such systems, these emerging contaminants initially pass into the air in the hall and are released into the free atmosphere with the air in the hall, possibly considerably diluted. This involves an air change that can possibly be tolerated in hot factories, but which leads to drafts and creates additional heating problems in halls without significant heat sources, and which generally does not allow the exhaust air to be cleaned.
  • EP-A-0 135 487 describes an exhaust gas detection hood with a centrally arranged extraction arm with flow sinks directed towards one another and centrally arranged with respect to the hood and which are connected to an extraction system, the insert dividing the hood with the side surfaces into two areas that are different in terms of flow technology, so that there are two aerodynamically separate swirl flows excited by blow jets, which inevitably has repercussions on the effectiveness of the exhaust gas detection in the area of this application. In addition, it limits the space available for a swirl flow, the two side walls specifying the length of the exhaust hood. With this exhaust gas detection hood, the swirl flow is stimulated and stabilized by a blow jet. Further embodiments of exhaust gas detection hoods which have a jet-assisted swirl flow are described in WO-A-88/09 227, US-A-3 049 069, SE-B-409 178 and US-A-744 305.
  • a detection hood for contaminated Air which produces a suction air flow along a horizontal plane, the hood extending between two end faces providing a suction area, the width of which is given by the distance between the two end faces.
  • the height of the inflow opening which also extends over the entire width of the hood, can be designed as desired. It is essential here that both end faces are connected by a cylindrical partial casing which completes the housing of the hood, the inflow opening being smaller in height than the diameter of this casing.
  • a pure swirl flow is formed in this hood, which, in compliance with the laws of potential flow, has a circumferential speed that is relatively high compared to the entry speed of the intake air.
  • the dynamic pressure directly associated with the high peripheral speed allows the static pressure in the area of the inflow opening to drop because of the constancy of the total pressure, so that the desired effect of suctioning off and detecting the impurities released in the area of the inflow opening is ensured.
  • suction air currents can be generated, provided the width of the hood does not exceed a dimension dependent on the swallowing capacity of the frontal depressions.
  • such an exhaust gas detection hood requires a suction area that limits the flow in order to force the desired defined suction flow, which, however, is not possible in free space.
  • the invention comes in, which is based on the task of developing a generic exhaust gas detection hood in such a way that it can be used for any length, without having to resort to the blast jet support, a hood also being proposed as a continuation of the task , which can be used advantageously as an "overhead hood" without being tied to a suction surface.
  • the hood should be simple and economical to manufacture, easy to maintain and reliable.
  • the lateral surface of the exhaust gas detection hood with a cylindrical or polygonal cross-section has a jacket which guides the swirl flow over at least 270 °, an area of the jacket being open as an inflow opening, and the section of the jacket which runs out in the direction of the swirl flow towards the inflow opening has the indentation, and that connected to a suction system pipelines at equal distances from the two end walls and from each other radially as sink pipes with a pipe diameter which is small compared to that of the exhaust gas detection hood, are introduced into the exhaust gas detection hood, the radially inserted drain pipes Have double inflow openings arranged concentrically to the jacket and coaxial to the inflow openings of the end faces.
  • each of the end surfaces has a flow sink, and that further coaxial flow sinks are provided at equal distances therefrom, in the form of sink tubes radially introduced into the cylinder or the polygon, which are provided with inflow openings which are concentric with the outer surface of the hood , flow conditions are created which ensure a continuous swirl flow over the entire width of the exhaust gas detection hood.
  • These drainage pipes are connected to suction systems via connecting lines, via which the air to be extracted is extracted from the center of the stabilized swirl flow in such a way that this flow is maintained in a stable manner.
  • These sink tubes each represent a double sink, since the inflow openings coaxial to the cylinder are open on both sides, so that the jacket forms a partial cylinder or a polygon open on one side.
  • the partial area corresponding to the outflowing flow can be to the central axis of the exhaust gas detection hood for flow acceleration to have moved in.
  • the spiral formation of at least this partial area is advantageous; in the case of the polygonal shape, the last section of the polygon lying in the direction of the flow is advantageously bent inwards, so that in both cases the desired narrowing of the flow before entering the Area of the suction opening is reached.
  • the inflow openings of the flow sinks expediently have conventional inlet nozzles provided with curves, which are inserted into the end faces or the sink pipes. These rounded inlet nozzles reduce the inflow losses of each of these sinks and thus reduce the energy required to promote the extracted air flow.
  • the suction systems can be provided individually for each of these sink pipes, it being advantageous if the connections are made via flexible connecting lines.
  • the suction devices can also be set up in groups.
  • all or some of the sink pipes combined in groups are connected to a suction device.
  • a common suction channel is provided for all drain pipes or for the drain pipe group.
  • the channel cross-section is designed such that the cross-section increases by a certain amount each time one of the sink pipes is introduced, this cross-sectional increase being such that the Flow velocity in the entire suction channel is essentially the same.
  • the sink tubes are advantageously arranged at equidistant distances from the respectively adjacent or opposite the respective adjacent end wall. This arrangement provides a symmetry which allows the individual suction flows of the individual sinks (end faces) or double sinks (sink pipes) to be compared with one another in a simple manner.
  • the outer surface of the hood is formed by two penetrating cylinders, the penetration being such that the central axes of the cylinders lie outside the respective other cylinder and that the openings of the cylinders complement each other to form a suction opening.
  • Such an exhaust gas detection hood does not require an additional flow guide surface and it can easily be used as an "overhead hood". Since it can be extended to any length due to the additional sinks, it also allows exhaust gases or gases from elongated sources to be effectively captured and extracted.
  • the source is advantageously parallel to the axis of the exhaust gas detection hood and symmetrical to a vertical plane running through its center.
  • the jacket surrounding the hood volume is formed by two penetrating cylinders, which are equally open in the lower area of each of these cylinders, the air flowing into the suction opening is forced into a double swirl flow, the two swirl flows being afflicted in opposite directions and mutually stabilize.
  • the arrangement of the two cylinders, which are arranged in mirror image to one another, is significant, the two swirling currents being superimposed in the penetration area. With these opposing swirl flows it is achieved that the required suction flow is formed on both sides of the center plane of the hood arrangement.
  • the opposing swirl flows in the two hoods, which are due to inflow asymmetries, run at a higher rotational speed than the suction speed, so that the dynamic pressure of the swirl flow can lower the static pressure in the inflow area and force the inflow out of the room.
  • the inflow is mirror-symmetrical to the longitudinal axis and extends essentially over the entire length of the exhaust gas detection hood.
  • the two outer edges of the jacket, which delimit the suction opening are provided with guide surfaces directed into the interior of the cylinders, which narrow the flow cross-section of both cylinders in approximately the same way.
  • This constriction of the swirl flows into the areas of their transitions into the inflow opening, which is known per se from DE-A-39 01 859, accelerates the swirl flow on the one hand and the asymmetry of the inflow on the other enlarged and thus favors the formation of the swirl flow; this narrowing is made equally on both sides.
  • the exhaust gas detection hood is arranged to be adjustable in height and is preferably provided with an adjustment drive.
  • Their connecting pieces are connected to the suction lines or to the suction channel. It goes without saying that it is irrelevant for the function of the suction hoods whether they are connected to rigid suction tubes or to flexible suction lines.
  • the rigid suction pipes are telescopically pushed into one another when the height of the hood changes, or they can be pivoted to compensate for the height difference.
  • a certain amount of height difference can be bridged with their flexibility in a simple manner, although increased pipe friction and an associated increased pressure drop have to be accepted.
  • the stability increases further. It is advantageous if the constriction is carried out by a straight or a diaphragm rounded in accordance with the flow in such a way that the radius of the flow is reduced by about 25%. This diaphragm also achieves a "pre-direction" of the air flowing in to the inlet opening from the side facing away from the inflow surface, so that the formation and the stability of the swirl flow are also favored from this side.
  • FIG. 1 shows a highly schematic section of an exhaust gas detection hood in a perspective view with an end plate 6 and a jacket 7 which extends from the end plate 6 in the axial direction and which has a cylindrical cross section in the example shown.
  • the end plate 6 is provided (here :) with a sink pipe 3 arranged centrally to the jacket 7, which has an inlet nozzle 3.1, which represents the flow sink and with which exhaust air is taken over in the center of the exhaust gas detection hood and thus a swirl flow is excited.
  • a sink pipe 4 is guided axially into the flow through the jacket 7 at a distance from the end plate 6 and is provided with two inlet nozzles 4.1 directed towards one another, which are coaxial with the inlet nozzles 3.1 of the end plates 6 lie.
  • These inlet nozzles 4.1 of the axial sink pipes 4 likewise produce a sink flow, as indicated by the dashed arrows, which stimulates a swirl flow, also indicated by the dashed arrows, with a proportion of air corresponding to the air flowing into the flow sink through the inflow opening 8 of the exhaust gas detection system.
  • the hood is sucked in again, as indicated by dashed arrows.
  • the swirl flow is not tied to a cylindrical shape of the exhaust gas detection hood.
  • the acceleration is distributed over the path covered by the jacket 7.
  • the end plate 6 is here (shown for better illustration with a circularly delimited upper part) beyond the suction opening 8, both ends of the jacket 7 being provided with aprons 9.2 which, together with the protruding end plate 6, limit the inflow region to the outside.
  • the casing 7 ′′ is designed as a polygon (shown here as a hexagon).
  • the exhaust gas detection hood is able to generate and guide a swirl flow (shown in dashed lines).
  • a swirl flow shown in dashed lines.
  • the end plate 6 is expediently adapted to the polygon, it being able to protrude in the region of the inwardly bent section.
  • the two ends of the jacket 7 can be provided with aprons which — as in the case of the spiral jacket 7 ′ - are directed outwards and, together with the projection of the end plate 6, limit the inflow area.
  • FIG. 4 shows a longitudinal view of an exhaust gas detection hood with the jacket 7, which extends between the two end plates 6.
  • the axial sink tubes 3 for the end plates are guided centrally into these end plates and are provided with inlet nozzles 3.1 on the inflow side.
  • Each of the radial sink tubes 4 has two inlet nozzles 4.1, which are directed towards each other.
  • the axial drain pipes 3, like the radial drain pipes 4, are connected via the connecting lines 3.2 and 4.2 to an exhaust air collecting duct 2, which in turn is connected to the exhaust air connector 1 is connected to an exhaust air extraction system (not shown).
  • a proportion of fresh air corresponding to the air sucked out via the inlet nozzles of the sink pipes is sucked in through the suction opening 8, an inward-facing apron 9.1 pushing the air into the area of the suction opening 8 of the swirl flow inward and accelerating it.
  • FIG. 5 shows a special application of the exhaust gas detection hood:
  • two opposing swirl flows are generated in a hood which is provided with two end plates, one of which can be seen in the section shown.
  • the end plates 6 are provided with the axial sink pipes 3 and radial sink pipes 4 are introduced into the swirl flow, all sink pipes being provided with the corresponding inlet nozzles 3.1 and 4.1, respectively, which are equipped with one or two (not shown in more detail) exhaust air collecting duct / channels are connected.
  • the two swirl flows which are formed by the inflow of the extracted air 10 into the inflow openings of the sink pipes are in opposite directions, the flow direction being advantageously selected such that both swirl flows in the area of the suction opening 8 are directed away from the latter.
  • Both edges of the common casing 7 are expediently provided with inward-facing skirts 9.1, which force both swirl flows inwards and accelerate them before they enter the area of the suction opening 8.
  • the two coats can also be formed spirally inwards - as indicated by dashed lines.
  • the end plates 6 can - as shown - be designed so that their contour represents an envelope of the common jacket 7. It goes without saying that this end plate 6 can also be shaped according to the contour of the common casing 7.

Landscapes

  • Sampling And Sample Adjustment (AREA)
  • Cyclones (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Claims (14)

  1. Capot d'interception des gaz d'échappement pour intercepter de l'air pollué ou d'autres gaz, notamment de sources oblongues avec un courant tourbillonnaire stabilisé où le capot est délimité par deux faces d'extrémité (6) parallèles l'une à l'autre, pourvues d'ouvertures et présente une enveloppe (7) s'étendant entre celles-ci qui présente au voisinage du courant sortant dans les zones d'aspiration ouvertes (8), pour l'accélération de celui-ci, une alimentation (9.1 ; 9.2) caractérisé en ce que la surface d'enveloppe (7', 7'') du capot d'interception des gaz d'échappement d'une section transversale cylindrique ou polygonale présente une enveloppe qui guide le courant tourbillonnaire sur au moins 270°, une zone de l'enveloppe étant ouverte en tant qu'ouverture d'affluence (8), et où le tronçon s'étendant en direction du courant tourbillonnaire vers l'ouverture d'affluence (8) de l'enveloppe présente une alimentation, et en ce que des canalisations (4.2) raccordées à un système d'aspiration sont guidées radialement dans le capot d'interception des gaz d'échappement, suivant des écarts égaux relativement aux deux parois frontales et l'une de l'autre, en tant que tuyaux descendants (4) d'un diamètre de canalisation qui est petit par rapport à celui du capot d'interception des gaz d'échappement, les tuyaux descendants (4) introduite radialement présentant des ouvertures d'affluence doubles disposées concentriquement à l'enveloppe et coaxialement aux ouvertures d'affluence des faces d'extrémité (6).
  2. Capot d'interception des gaz d'échappement selon la revendication 1, caractérisé en ce qu'au moins dans une zone partielle correspondant au courant sortant, la section transversale de l'enveloppe cylindrique (7') est configurée an spirale.
  3. Capot d'interception des gaz d'échappement selon la revendication 1 ou 2, caractérisé en ce que l'ouverture d'affluence pour les puits de courant présente des buses d'entrée usuelles (3.1, 4.1) pourvues d'arrondis qui sont placées dans les faces d'extrémité (6) et, respectivement les tuyaux descendants (4).
  4. Capot d'interception des gaz d'échappement selon l'une des revendications 1 à 3, caractérisé en ce que le système d'aspiration pour les tuyaux descendants (3, 4) est constitué d'un certain nombre de dispositifs d'aspiration correspondant au nombre des tuyaux descendants (3 ; 4) qui sont reliés pur des conduits de raccordement de préférence flexibles aux tuyaux descendants associés à ceux-ci.
  5. Capot d'interception des gaz d'échappement selon l'une des revendications 1 à 3, caractérisé en ce que le système d'aspiration pour les tuyaux descendants (3 ; 4) est constitué d'au moins un dispositif d'aspiration central, fonctionnant sur un canal collecteur d'air usé (2), les tuyaux descendants (3 ; 4) étant raccordés à ce canal collecteur d'air usé (2).
  6. Capot d'interception des gaz d'échappement salon la revendication 5, caractérisé en ce qu'il est prévu au moins à chaque embouchure d'un des tuyaux descendants (3 ; 4) une augmentation de la section transversale du canal collecteur d'air usé (2), l'agrandissement de la section transversale étant réalisé de préférence de façon que la vitesse du courant dans le canal collecteur de l'air usé (2) soit essentiellement constante.
  7. Capot d'interception des gaz d'échappement selon l'une des revendications 1 à 6, caractérisé en ce que la surface d'enveloppe (7) du capot d'interception des gaz d'échappement est constituée de deux cylindres pénètrent l'un dans l'autre, la pénétration étant réalisée de façon que l'axe médian des cylindres se situe à l'extérieur de l'autre cylindre respectif et que les zones partielles ouvertes des cylindres (7) se complètent vers l'ouverture d'aspiration (8).
  8. Capot d'interception des gaz d'échappement selon la revendication 7, caractérisé en ce que l'enveloppe (7) du capot d'interception des gaz d'échappement est ouvert dans la zone inférieure vers l'ouverture d'aspiration (8), et de préférence les deux cylindres sont ouverts selon le même degré.
  9. Capot d'interception des gaz d'échappement selon la revendication 7 ou 8, caractérisé en ce que les deux arêtes extérieures de l'enveloppe (7) délimitant l'ouverture d'aspiration (8) sont pourvues de faces conductrices (9.1) orientées vers l'intérieur des deux cylindres pénétrant l'un dans l'autre, qui rétrécissent la section transversale du courant des deux cylindres à peu près de la même manière.
  10. Capot d'interception des gaz d'échappement selon la revendication 9, caractérisé en ce que le capot d'interception des gaz d'échappement est disposé de façon que les faces de guidage (9.1) orientées vers l'intérieur des cylindres (7) correspondent aux faces délimitant le côté supérieur de la source (10).
  11. Capot d'interception des gaz d'échappement selon la revendication 10, caractérisé en ce que les faces de guidage (9.1) orientées vers l'intérieur des cylindres (7) peuvent être appliquées aux faces de délimitation de la source (10).
  12. Capot d'interception des gaz d'échappement selon l'une des revendications 1 à 11, caractérisé en ce que le capot d'interception des gaz d'échappement est disposé de façon réglable en hauteur et est pourvu de préférence d'une commande de déplacement.
  13. Capot d'interception des gaz d'échappement selon la revendication 12, caractérisé en ce que le conduit d'aspiration et, respectivement les raccords des tuyaux descendants (3,2, 4.2) au canal collecteur d'air usé (2) sont réalisés de manière flexible.
  14. Capot d'interception des gaz d'échappement selon la revendication 13, caractérisé en ce que les conduits d'aspiration (11) sont réalisés sous forme de conduits télescopiques.
EP93120268A 1992-12-23 1993-12-16 Hotte d'évacuation de fumées Expired - Lifetime EP0605821B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4243834 1992-12-23
DE19924243834 DE4243834C3 (de) 1992-12-23 1992-12-23 Abgaserfassungshaube mit stabilisierter Drallströmung

Publications (2)

Publication Number Publication Date
EP0605821A1 EP0605821A1 (fr) 1994-07-13
EP0605821B1 true EP0605821B1 (fr) 1997-09-03

Family

ID=6476386

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93120268A Expired - Lifetime EP0605821B1 (fr) 1992-12-23 1993-12-16 Hotte d'évacuation de fumées

Country Status (3)

Country Link
EP (1) EP0605821B1 (fr)
AT (1) ATE157567T1 (fr)
DE (1) DE4245014C2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29819896U1 (de) * 1998-11-06 2000-03-23 Rud. Otto Meyer GmbH & Co. KG, 22047 Hamburg Vorrichtung zum Erfassen und Absaugen von Fluiden
GB2390151B (en) * 2002-06-28 2006-05-10 Tornex Inc Enclosure-based suction apparatus
DE102010063843A1 (de) 2010-12-22 2012-06-28 BSH Bosch und Siemens Hausgeräte GmbH Dunstabzugshaube und Verfahren zum Abscheiden von Aerosolen
AT514933B1 (de) * 2013-11-22 2015-05-15 Scheuch Gmbh Absaugvorrichtung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3049069A (en) * 1959-12-16 1962-08-14 Whiston Donald Fume hood
SE409178B (sv) 1976-10-15 1979-08-06 Flood Bernt Olov Anordning for utsugning av luft eller andra gaser fran ett utrymme som skall ventileras
SE8305034L (sv) * 1983-09-19 1985-03-20 Bahco Ventilation Ab Utsugningsanordning
US4744305A (en) * 1986-04-21 1988-05-17 B.C. Rail Exhaust removal system
SE8702139L (sv) * 1987-05-22 1988-11-23 Stefan J Moszkowski Sugkaapa foer anslutning till ett punktsugsystem
DE3901859C2 (de) * 1989-01-23 1995-11-30 Kessler & Luch Gmbh Stabilisierte Drallströmung

Also Published As

Publication number Publication date
DE4245014C2 (de) 2003-01-16
EP0605821A1 (fr) 1994-07-13
ATE157567T1 (de) 1997-09-15

Similar Documents

Publication Publication Date Title
DE2837036C2 (fr)
DE69816009T2 (de) Zyklonabscheidevorrichtung
DE2818791A1 (de) Wirbelrohr fuer zyklonabscheider
DE3001413C2 (de) Einlaßöffnungseinrichtung, die an einem Abgasrückführungsrohr bei einer Diesel-Brennkraftmaschine ausgebildet ist
DE2347984A1 (de) Apparat zum abscheiden von partikeln aus gasen
DE29912274U1 (de) Geräuscharme Lüfter-Filter-Einheit
DE3206626A1 (de) Abgaskanal fuer gasturbinen
EP0489193B1 (fr) Chambre de combustion pour turbine à gaz
DE69401553T2 (de) Statische, dynamische Gasabfuhreinrichtung
DE1924873U (de) Ventilator, insbesondere abluftventilator fuer raeume.
DE2226745A1 (de) Strahlgeblaese, sogenannter ejektor
EP1081331B1 (fr) Procédé et système d'aspiration pour la ventilation, p.e. de fumée dans des tunnels
DE68916654T2 (de) Sauganordnung.
DE4243834C2 (de) Abgaserfassungshaube mit stabilisierter Drallströmung
EP2334988B1 (fr) Hotte aspirante
EP0605821B1 (fr) Hotte d'évacuation de fumées
EP1765484B1 (fr) Separateur de particules
DE10245419B4 (de) Gebläseanordnung
WO2005022046A1 (fr) Systeme servant a aspirer en particulier de l'air charge de substances polluantes
DE102019127751A1 (de) Filtervorrichtung und Verfahren zum Abreinigen eines Filterelements einer Filtervorrichtung
DE2736074A1 (de) Ansaugsystem fuer den verdichter einer gasturbine
EP0311934B1 (fr) Sortie d'air pour aération et conditionnement d'air
DE102005030884A1 (de) Spiralgehäuseaustrittseinrichtung
DE9219221U1 (de) Abgaserfassungshaube
DE10042443B4 (de) Mechanisches Abscheidegitter

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): AT CH DE ES FR GB IT LI NL PT

17P Request for examination filed

Effective date: 19940601

17Q First examination report despatched

Effective date: 19950322

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE ES FR GB IT LI NL PT

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

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19970903

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;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.SCRIBED TIME-LIMIT

Effective date: 19970903

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19970903

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19970903

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19970903

REF Corresponds to:

Ref document number: 157567

Country of ref document: AT

Date of ref document: 19970915

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59307269

Country of ref document: DE

Date of ref document: 19971009

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

Ref country code: PT

Effective date: 19971203

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

Ref country code: AT

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

Effective date: 19971216

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

Ref country code: LI

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

Effective date: 19971231

Ref country code: CH

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

Effective date: 19971231

EN Fr: translation not filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19970903

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

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

26N No opposition filed
REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 59307269

Country of ref document: DE

Representative=s name: VON ROHR PATENTANWAELTE PARTNERSCHAFT MBB, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 59307269

Country of ref document: DE

Representative=s name: VON ROHR PATENTANWAELTE PARTNERSCHAFT, DE

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

Ref country code: DE

Payment date: 20121129

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59307269

Country of ref document: DE

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 EXPIRATION OF PROTECTION

Effective date: 20131217