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EP0327655B1 - Filtre à fumee, notamment pour pipes à tabac - Google Patents

Filtre à fumee, notamment pour pipes à tabac Download PDF

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Publication number
EP0327655B1
EP0327655B1 EP88101963A EP88101963A EP0327655B1 EP 0327655 B1 EP0327655 B1 EP 0327655B1 EP 88101963 A EP88101963 A EP 88101963A EP 88101963 A EP88101963 A EP 88101963A EP 0327655 B1 EP0327655 B1 EP 0327655B1
Authority
EP
European Patent Office
Prior art keywords
filter
sleeve
perforations
plug
plugs
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
EP88101963A
Other languages
German (de)
English (en)
Other versions
EP0327655A1 (fr
Inventor
Hans Elstner
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT88101963T priority Critical patent/ATE65165T1/de
Priority to EP88101963A priority patent/EP0327655B1/fr
Priority to DE8888101963T priority patent/DE3863770D1/de
Publication of EP0327655A1 publication Critical patent/EP0327655A1/fr
Application granted granted Critical
Publication of EP0327655B1 publication Critical patent/EP0327655B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F7/00—Mouthpieces for pipes; Mouthpieces for cigar or cigarette holders
    • A24F7/04—Mouthpieces for pipes; Mouthpieces for cigar or cigarette holders with smoke filters
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F1/00—Tobacco pipes
    • A24F1/02—Tobacco pipes with arrangements for cleaning or cooling the smoke
    • A24F1/20—Tobacco pipes with arrangements for cleaning or cooling the smoke with absorbent linings

Definitions

  • the invention relates to a smoke filter, in particular for tobacco pipes, consisting of a cylindrical sleeve made of absorbent material, which is closed at both ends by a plug provided with through holes and seated in the sleeve, and a filter material in the sleeve between the plugs.
  • a smoke filter in particular for tobacco pipes, consisting of a cylindrical sleeve made of absorbent material, which is closed at both ends by a plug provided with through holes and seated in the sleeve, and a filter material in the sleeve between the plugs.
  • Such filters are commercially available for tobacco pipes and are already known from DE-U-8706 686.6.
  • These filters consist of a paper tube with an outer diameter of approximately 8 mm and a length of 36 mm, into which plugs of approximately 6 mm length are inserted on both sides, which are provided with axial through holes or recesses, and a filter material filling made of granular activated carbon, which defines the interior of the tube between the plugs.
  • Such filters are primarily intended for use in tobacco pipes.
  • the tobacco smoke flows through the axial holes in the pipe-head end of the filter into the sleeve and hits the activated carbon particles, where condensate separates out. Due to capillary forces, but also due to flow effects, condensate also reaches the inner wall of the sleeve and is absorbed by it due to the suction properties of the sleeve material.
  • a cylindrical filter plug with a concentric annular gap formed by a blind hole has become known in US-A-4120310, the inner wall of the annular gap formed by the blind hole having holes through which the smoke from the blind hole flows into the annular gap on the opposite outer wall and condensate can.
  • the invention has for its object to provide a filter of the type mentioned, which has better condensate separation properties.
  • the tobacco smoke when smoking, the tobacco smoke falls into the blind hole when it reaches the filter in the first phase. This leads to the first separation of condensate in this area.
  • the tobacco smoke is deflected laterally and directed against the inner wall of the absorbent sleeve surrounding the inlet plug.
  • an annular gap is formed between the blind hole and the sleeve through the plug, and the two concentric walls of the plug delimiting them are provided with mutually aligned through holes, of which the holes formed in the outer peripheral wall preferably have a larger cross section than that in the inner peripheral wall.
  • the holes are as close as possible to the entry end of the sleeve, i.e. close to the opening of the blind hole. It is hereby achieved that the smoke in the holes which are formed in the inner peripheral wall is accelerated, so that it relaxes and cools as it emerges from these holes into the annular gap, a large proportion of the smoke being in alignment with the inner holes opposite outer holes hits the surrounding sleeve and there separates a large part of the moisture-bound condensate. Due to the capillary action of the absorbent sleeve material, the condensate can quickly spread from there in the sleeve material.
  • the smoke which is partially dehumidified in this way, passes through the annular gap into the actual interior of the sleeve, which is filled with filterable substances, for example granular waste coal, or other substances suitable for filtration.
  • filterable substances for example granular waste coal, or other substances suitable for filtration.
  • Such substances can be diatomaceous earth, meerschaum, cellulose and the like.
  • the activated carbon for example, with its hydrophobic property is now confronted with the dehumidified smoke and can perceive the gas phase of the smoke for the detoxification of the smoke in a much better function than is the case with known pipe filters, where the surface of the activated carbon is immediately affected by the moisture content in the Smoke is sealed and can no longer do the job it was intended to do.
  • the annular gap should be sufficiently wide to promote relaxation of the smoke after exiting the holes in the inner peripheral wall, but should be sufficiently narrow when using a granular filter material that no granules of filter medium can enter it.
  • the through holes in the outer peripheral wall of the stopper preferably have a cross-section that is about four to ten times larger than the holes in the inner peripheral wall in order to allow as much as possible for the smoke To make sleeve material accessible.
  • a medium with an absorbent property for example cellulose
  • the additional tensile resistance which is inevitably built up as a result must then be compensated for by larger through holes and / or by a larger gap width.
  • the cross section of the annular gap widens slightly towards its open end. Furthermore, it is advantageous for manufacturing reasons if the outer surface of the plugs in the area between the outer through holes and the end of the respective plug facing away from the opening of the blind hole is slightly conical in order to facilitate the insertion of the plugs into the sleeves.
  • Polypropylene is particularly suitable as the material for the plugs, since this material has sufficient heat resistance, which can be influenced by the addition of mineral additives, and is easy to process.
  • a small proportion of a ferromagnetic material, for example iron powder is added to the stopper material. The filters can then be created using magnetic fields align.
  • the through holes in the inner peripheral wall which delimits the blind hole, are sufficiently small to be able to produce the aforementioned nozzle effect. On the other hand, they must not be too small, because otherwise they obstruct the train when smoking.
  • four holes which are arranged on a radial plane at regular angular intervals and each have a diameter of 1 mm, do not result in any significant impairment of the draft of a pipe.
  • the through holes in the outer peripheral wall that clamps on the sleeve should be about 5 to 10 times as large in cross-sectional area as the through holes in the inner peripheral wall. For example, they can have a diameter of 2.5 mm.
  • the aforementioned dimensions relate to a commercially available filter size of the type described at the beginning.
  • sleeve 1 shows a sleeve 1, which consists of an absorbent paper, nonwoven material or other suitable absorbent material and has a cylindrical shape. Plugs 2 are inserted into both ends of the sleeve 1.
  • the sleeve 1 is filled with a suitable filter material, which in particular activated carbon or another, filterable material suitable for filtering smoke. It is important that the sleeve material is well absorbent.
  • Fig. 2 shows in axial section (along the line II-II of Fig. 3) a plug 2 of the filter of Fig. 1.
  • the plug 2 is substantially cylindrical. It has a central, preferably circular blind hole 3, which is preferably slightly conical for manufacturing reasons.
  • the wall surrounding the blind hole 3 is double-walled, consisting of an inner wall 4 and an outer wall 5, which form an annular gap 6 between them, which is open on the side of the plug 2 facing away from the opening of the blind hole 3 and cross-sectionally in the direction of this opening slightly enlarged.
  • the annular gap 6 is closed by an annular end wall 7 which connects the two concentric peripheral walls 4 and 5 to one another.
  • this ring wall is rounded in a toroidal shape in the opening region of the blind hole 3 in order to offer good conductivity for the tobacco smoke flowing into the blind hole 3 from the outside.
  • the sleeve 1 in which the plugs 2 are inserted, is shown in dashed lines. 2 shows, the outer circumferential wall 5 is slightly conical below the through holes 9, which facilitates the insertion of the plugs into the sleeve 1. It also becomes a Excessive compression of the sleeve material avoided, which could possibly impair the absorbency.
  • the stopper 2 has a diameter of approximately 7.3 mm and a length of approximately 6 mm.
  • the blind hole 3 has a diameter of approximately 2.8 mm and extends approximately 5 mm deep into the plug 2.
  • the through bores 8 in the inner peripheral wall 4 have a diameter of approximately 1 mm, while the through bores 9 in the outer peripheral wall 5 have a diameter of approximately 2-2.5 mm.
  • the annular gap 6 has a width of approximately 1 mm at its outlet end.
  • the distance of the center of the through bores 8 and 9 from the upper end face of the plug 2, i.e. from the opening plane of the blind hole 3 is approximately 1.8 mm.
  • the rounding radius of the blind hole opening is approximately 2.5 mm.
  • the inside of the annular end wall 7, which covers the annular gap 6, runs obliquely.
  • smoke can therefore be partially deflected under inertia against the outer through holes 9 before it enters the blind hole 3 through the inner through holes 8 and finally leaves the filter.
  • the edges of the through bores 8 and 9 also form flow separation edges which lead to a swirling of the smoke.
  • the plug at the mouth end of the filter thus fulfills a further condensate separating function within the framework of its design features, which in turn is particularly evident in the visible precipitation on the associated area of the sleeve.
  • the sleeve 1 can protrude approximately 0.5-1 mm from each stopper 2.
  • this projecting section of the sleeve can also be used to hold condensate, in particular such condensate, which may be deposited on the end face of the stopper.

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Claims (18)

  1. Filtre à fumée, notamment pour pipes à tabac, comportant une douille (1) en matière absorbante qui est obturée à chacune de ses extrémités par un bouchon (2) monté dans la douille (1) et pourvu de trous de passage (8), et une matière filtrante dans la douille entre les bouchons (2), caractérisé en ce que les bouchons (2) présentent chacun un trou borgne central (3) ayant son ouverture dirigée vers l'extérieur, en ce que la paroi périphérique (4,5) entourant le trou borgne (3) est double, constituant un interstice annulaire (6) ouvert à l'intérieur de la douille (1) et fermé à l'endroit de la face frontale extérieure du bouchon par une paroi annulaire (7), en ce que la paroi périphérique interne (4) qui délimite le trou borgne (3) présente, à proximité de l'ouverture du trou borgne (3), plusieurs petits trous internes de passage (8) sensiblement orientés dans le sens radial et disposés dans un plan radial, et en ce que la paroi périphérique externe adjacente à la douille (1) présente un nombre correspondant de trous extérieurs de passage (9), qui coïncident avec les trous intérieurs de passage (8).
  2. Filtre selon la revendication 1, caractérisé en ce que les trous extérieurs de passage (9) sont plus grands que les trous intérieurs de passage (8).
  3. Filtre selon la revendication 2, caractérisé en ce que la section de passage des trous extérieurs (9) est environ égale à 5 à 10 fois la section de passage des trous intérieurs (8).
  4. Filtre selon l'une des revendications précédentes, caractérisé en ce que le trou borgne (3) présente une section transversale de forme circulaire.
  5. Filtre selon l'une des revendications précédentes, caractérisé en ce que les trous de passage (8,9) ont une section de forme circulaire.
  6. Filtre selon l'une des revendications précédentes, caractérisé en ce que la paroi annulaire (7) présente, entre la bordure extérieure du bouchon (2) et le trou borgne (3), une partie conique ou une partie de révolution de profil arrondi.
  7. Filtre selon l'une des revendications précédentes, caractérisé en ce que la face extérieure de la paroi périphérique externe (5) est légèrement conique, dans la zone située entre les trous de passage extérieurs (9) et l'extrémité du bouchon (2) qui est à l'opposé de l'ouverture du trou borgne (3).
  8. Filtre selon l'une des revendications précédentes, caractérisé en ce que l'interstice annulaire (6) a une section qui va en s'évasant légèrement vers l'ouverture de cet interstice.
  9. Filtre selon l'une des revendications précédentes, caractérisé en ce que les bords des trous de passage extérieurs (9) sont immédiatement adjacents à la paroi annulaire (7).
  10. Filtre selon l'une des revendications précédentes, caractérisé en ce que les bouchons (2) sont confectionnés en polypropylène avec une charge.
  11. Filtre selon la revendication 10, caractérisé en ce que la charge est à base d'une matière minérale ou de talc.
  12. Filtre selon la revendication 11, caractérisé en ce que la proportion pondérale de la charge est de 30 à 40 %.
  13. Filtre selon l'une des revendications 10 à 12, caractérisé en ce que la charge contient en outre une matière ferromagnétique.
  14. Filtre selon l'une des revendications précédentes, caractérisé en ce que la douille (1) est confectionnée en papier ou dans une nappe de fibres.
  15. Filtre selon l'une des revendications précédentes, caractérisé en ce que la matière filtrante est constituée par du charbon actif en grains.
  16. Filtre selon l'une des revendications précédentes, caractérisé en ce que la matière filtrante est une matière cellulosique, ou à base de Kieselguhr ou d'écume de mer.
  17. Filtre selon l'une des revendications précédentes, caractérisé en ce que la face de la paroi annulaire (7) qui est disposée en regard de l'interstice annulaire (6) est conique et va en s'élargissant vers l'extérieur en direction de la face frontale adjacente du bouchon (2).
  18. Filtre selon l'une des revendications précédentes, caractérisé en ce que la douille (1) est en saillie d'environ 0,5 à 1 mm au-delà de chacun des bouchons (2).
EP88101963A 1988-02-10 1988-02-10 Filtre à fumee, notamment pour pipes à tabac Expired - Lifetime EP0327655B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT88101963T ATE65165T1 (de) 1988-02-10 1988-02-10 Rauchfilter, insbesondere fuer tabakpfeifen.
EP88101963A EP0327655B1 (fr) 1988-02-10 1988-02-10 Filtre à fumee, notamment pour pipes à tabac
DE8888101963T DE3863770D1 (de) 1988-02-10 1988-02-10 Rauchfilter, insbesondere fuer tabakpfeifen.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88101963A EP0327655B1 (fr) 1988-02-10 1988-02-10 Filtre à fumee, notamment pour pipes à tabac

Publications (2)

Publication Number Publication Date
EP0327655A1 EP0327655A1 (fr) 1989-08-16
EP0327655B1 true EP0327655B1 (fr) 1991-07-17

Family

ID=8198712

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88101963A Expired - Lifetime EP0327655B1 (fr) 1988-02-10 1988-02-10 Filtre à fumee, notamment pour pipes à tabac

Country Status (3)

Country Link
EP (1) EP0327655B1 (fr)
AT (1) ATE65165T1 (fr)
DE (1) DE3863770D1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4313847C1 (de) * 1993-04-27 1994-04-21 Hans Elstner Rauchfilter für Tabakpfeifen
NZ571453A (en) 2006-03-28 2011-09-30 Philip Morris Prod Smoking article with a restrictor that reduces carbon monoxide but maintains a high resistance to draw
US8353298B2 (en) 2006-07-12 2013-01-15 Philip Morris Usa Inc. Smoking article with impaction filter segment
US8424539B2 (en) 2006-08-08 2013-04-23 Philip Morris Usa Inc. Smoking article with single piece restrictor and chamber
TW200911141A (en) 2007-03-09 2009-03-16 Philip Morris Prod Super recessed filter cigarette restrictor
TW200911138A (en) 2007-03-09 2009-03-16 Philip Morris Prod Smoking articles with restrictor and aerosol former
EP2253231A1 (fr) * 2009-05-18 2010-11-24 Philip Morris Products S.A. Article à fumer avec élément de restriction de flux amélioré
US8424540B2 (en) 2009-10-09 2013-04-23 Philip Morris Usa Inc. Smoking article with valved restrictor
TW201204272A (en) 2010-03-26 2012-02-01 Philip Morris Prod Smoking articles with significantly reduced gas vapor phase smoking constituents
CA185871S (en) 2019-01-24 2020-07-14 Vespyr Inc Smoking pipe
CA3042820A1 (fr) 2019-05-09 2020-11-09 Cory D. Larsen Conduite d`eau avec couvercle pour couvrir le bol et l`embouchure, et procedes connexes de montage et d`utilsation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH173136A (de) * 1933-09-27 1934-11-15 Jur Kruesi Konrad Dr Med Und Gesundheitsrauchfilter.
US3646941A (en) * 1969-09-15 1972-03-07 E A Carey Pipe Co Cigarette and/or cigarette holder
AU1676470A (en) * 1970-06-30 1972-01-06 R. J. Reynolds Tobacco Company Smoke filter
US4120310A (en) * 1976-12-10 1978-10-17 Choon Bae Lee Filter for cigarettes, cigars and the like
FR2448306A1 (fr) * 1979-02-06 1980-09-05 Moussavi Houchang Perfectionnements aux dispositifs de filtrage pour fume-cigarette ou analogue
DE8706686U1 (de) * 1987-05-09 1987-07-02 Robert Maderholz, Pfeifenfabrik, 8831 Ettenstatt Filter für eine Pfeife oder für eine Zigarettenspitze

Also Published As

Publication number Publication date
ATE65165T1 (de) 1991-08-15
DE3863770D1 (de) 1991-08-22
EP0327655A1 (fr) 1989-08-16

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