DE1052140B - Filter cigarette tip - Google Patents

Description

The invention relates to a filter cigarette holder with several between the filter material and the cigarette holder arranged smoke channels.

The present invention aims to thereby provide the filter cigarette tip of the aforementioned type improve that a smoke channel is formed between the filter material and the cigarette socket, which is lengthened by labyrinth-like and returning paths and extensive diversions Creates a path for the smoke, on which the latter is subjected to a pre-filtering.

To solve the aforementioned problem, a central tubular extension directed towards the mouthpiece is provided in the cigarette holder housing between the cigarette holder and the filter material, ¹ S which is covered by a capsule, the wall of which, together with that of the extension, form labyrinthine smoke channels with deflection points, which via an annular chamber between the capsule and lead the cigarette holder housing to the filter material.

Since the adsorption capacity of the filter material is proportional to the contact time of the smoke and the Smoke temperature is inversely proportional, ensures that produced by the middle approach and the capsule Labyrinth channel for excellent pre-filtering because the tar and other substances that settled in the expansion chambers, condense in the cooled smoke, so that when the smoke has flowed through the entire labyrinth, it only when it reached the filter material carries a lower proportion of condensable substances with it.

According to a further feature of the invention, the smoke channel between the central approach and the cap can be designed as a helical channel. It is also possible to create an extended smoke channel on the mouthpiece-side face of the neck and on the opposite bottom surface of the capsule axially directed, interlocking annular projections to arrange.

To increase the contact time and reduce the flow rate, see Another feature of the invention, the annular chamber is designed so that the distance between its walls, which is smaller than the grain size of the filter material, increased towards the filter material.

Further details of the invention emerge from the description and the drawings. It shows

Fig. 1 is a longitudinal section through two cigarette tip components, which the labyrinth channel for the Form pre-filtering,

2 shows a complete representation of a cigarette holder with a filter insert and one of the pre-filters Filter cigarette tip

Applicant:

Jose Mazar Barnett, Buenos Aires
(Argentina)

Representative: Dr.-Ing. Η. Negendank, patent attorney,
Hamburg 36, Neuer Wall 43

Jose Mazar Bamett, Buenos Aires (Argentina),
has been named as the inventor

serving smoke channel, the flow path of the smoke from the cigarette to the granular filter material is explained by drawn arrows,

Fig. 3 shows a section through the filter insert along the line 3-3 of FIG. 2 to explain the Path through which the smoke flows through the individual channels and openings,

4 shows a perspective view of the two cigarette holder components forming the labyrinth channel,

5 shows a partially sectioned cigarette holder in side view according to a modified embodiment, in which the capsule forming the extended smoke path is provided with helical channels is; and

6 shows a longitudinal section through the labyrinth channel of a cigarette holder according to another Embodiment in which a plurality of ring-shaped projections are used to extend the smoke path is provided.

In the drawings , a tubular cigarette holder housing is designated with a, which has a mouthpiece 1 with an opening 2 for sucking in the smoke at one end. At its other end, the housing a is provided with a cigarette holder 3 , which is used to hold the cigarette 4 .

A line 5 leads from the socket 3 into a central attachment b which faces away from the insertion end of the cigarette 4.

The line 5 leads into a chamber c of a capsule c ¹ , which is placed as a cap on the extension b and is provided with internal recesses in such a way that the wall parts lying against one another form a bypass or labyrinth path, which via the outflow openings 6 into an expansion chamber 7

809 768/45

Claims (4)

opens, which is bounded by the outer wall of the capsule c1 and the inner wall of the tip housing a. Filter material 8, which fills almost the entire interior space, is arranged inside the cigarette holder housing. The filter material consists of granular material which - although it is fine-grained - still has such large dimensions that it cannot penetrate into the expansion chamber 7. The chamber 7 thus remains free so that the smoke can expand in it and then penetrate between the individual grains of the filter material 8. As the arrows in the various drawings show, the channels between the extension b and the capsule c1 form a labyrinth in which the smoke can spread over various paths. When smoking, the smoke flows from the cigarette holder 3 to the line 5 and chamber c of the capsule c1. Since the capsule envelops the approach b, its recesses form channels 9, 11, in which the smoke continues to flow approximately in the opposite direction after reaching the chamber c until it reaches the outflow openings 6 and thereby enters the expansion chamber 7, in which it again flows into the same direction as in the line 5 flows. The diversions and the expansion result in a reduction in the flow velocity and a cooling. From the chamber 7, the smoke is distributed through the large number of openings between the individual grains of the filter material, so that the smoke reaches the smoker's mouth practically after passing through two separators, one of which is from the labyrinth between the extension b and the capsule C1 and the other is formed by the filter material 8. The labyrinth guide between the approach b and the capsule c1 causes a cooling of the smoke, so that tar and other substances condense and are deposited in the labyrinth channel especially at the deflection points. Thus, when it reaches the filter material 8, the smoke has already lost its densest constituents and only suffers a supplementary filtering between the grains 8, in which the nicotine and toxic gases are retained. In the embodiment according to FIGS. 1 to 4, the retrograde path, i. H. the path opposite to the line 5 is formed by channels 9 which end in an annular channel 10 which is provided with the outflow openings 6. In the example of FIG. 5, the smoke path running in the opposite direction is formed by a helical channel 11 which also ends in a channel 10 which is provided with outflow openings 6. In the embodiment according to FIG. 6, the retrograde smoke path consists of a plurality of annular projections 15, 16 on the capsule c1 and an intervening projection 17 on the extension b, so that the labyrinth path is a series of concentric diversions which lead from the line 5 to the ίο channel 10, where the smoke can enter the chamber 7 via the outflow openings 6. The invention is not restricted to the exemplary embodiments and can be modified in numerous points without departing from the scope of the present invention. Patent claims: 1. Filter cigarette holder with several smoke channels arranged between the filter material and the cigarette socket, characterized in that a central tubular extension (b) directed towards the mouthpiece (1) is provided in the cigarette holder housing (d) between the cigarette socket (3) and the filter material (8) a capsule (c ¹ ) covers, the wall of which, together with that of the extension (b), form labyrinthine smoke channels (9, 10, 11) provided with deflection points, which lead to the filter material ^{via an annular chamber (7) between the capsule (c 1} ) and the cigarette holder housing (a) (8) lead. 2. Filter cigarette tip according to claim 1, characterized in that the distance between the walls the annular chamber (7), which is smaller than the grain size of the filter material, to Filter material enlarged towards (Fig. 2). 3. Filter cigarette tip according to Claiml or 2, characterized in that a helical channel (11) is arranged as a smoke channel between the projection (b) and the capsule (c ^{1) (Fig. 5).} 4. Filter cigarette tip according to claim 1 or 2, characterized in that on the mouthpiece-side end face of the extension (V) and on the opposite bottom surface of the capsule (c ¹ ) axially directed, interlocking annular projections (15, 16, 17) are arranged ( Fig. 6). Considered publications:
German Patent No. 697,642;
British Patent No. 666 308. 1 sheet of drawings