DE2719192A1 - Mosquito killing smoke generator - has housing and lid with several smoke flue holes enclosing spiral strip - Google Patents

Abstract

The smoke generator is for burning a spiral shaped wound strip made from a material, whose smoke kills mosquitoes. There is a break-free housing (A) and a lid (B) which has several smoke flue holes (5). At outer ring-shaped edges, the holes are connected to a shell-shaped container for the spiral. In the container are stretched two glass fibre nets (1) which hold the spiral from the edges of the housing and its lid. A fire-resistant clamping plate exerts an auxiliary pressure on the centre of the spiral. This plate is fixed to the inside of one of the two glass fibre nets (1).

Description

PATENT LAWYERS

Dr.-lng. Wolff t H. Bartels

Dipl.-Chem. Dr. Brandes Dr.-lng. hero Dipl.-Phys. Wolff

D - 7 Stuttgart 1, Lange Strasse

Tel. (0711) 29 6310 and 29 72

Telex 07 22312 (patwo d) Telegram address:

tlx 07 22312 Wolff Stuttgart

PA Dr. Brandes: Headquarters Munich

Postal check. Stuttgart 7211-700 bank code 60010070

Deutsche Bank AG, 14/28630 BLZ 60070070

Office hours:

9-11.30 a.m., 1.30 p.m.-4 p.m.

except saturdays

April 23, 1977

Registration number. 125 320
Our ref .: 34 09amy

Yoshimasa YOKOYAMA, Ttfakayama (Japan)

Smoke generator for floskitobekäxipfung

Telephone information and orders are only possible after written Confirmation binding

The invention relates to a smoke generator for burning off a spirally wound cord made of a material whose combustion smoke fights mosquitoes, which is why this cord is referred to below as 'mosquito wrap ¹ ' for short. The subject of the invention is an improved smoke generator for mosquito wraps, which is externally composed of a housing and a matching lid, which are detachably connected to form a circular, flat container which holds a mosquito wrap for generating smoke.

The conventional smoke generator have a container that from a bowl-shaped case, which makes up its largest part, as an ashtray and from a bowl-shaped one as well Lid is made, which is removably attached to the edge of the housing. On the touching edge surfaces of the housing and the cover a series of holders for the mosquito wrap is arranged to keep it in suspension while it is protected burns down continuously. For this type of smoke generator, a metal plate has heretofore been used as a means for holding the iloskito wrap with numerous small protrusions or a metal plate with a layer of fiberglass on it, etc. is used. A smoke generator that is able to use a mosquito wrap To hold a pair of metal plates often has the disadvantage that when the ignited portion of the coil the reaches it from both sides grasping metal parts, heat is suddenly withdrawn from the coil, so that the embers very often goes out; that when the metal plate acts as a heat conductor, the container is heated to an extremely high temperature will; or that when the spiral wrap is ignited simultaneously in different places, the container even is heated even higher, so that a fire breaks out or a fire breaks out. It is also disadvantageous that the Smoke generated by means of the mosquito wrap tar (pitch resin) tends to get together with the ashes on the holders to fix, whereupon the accumulated tar with ash the smoke generation by burning the subsequent section of the mosquito wrap interrupts, which is why a frequent exchange

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of the wrap against a new one is required. Even those constructions whose metal plates one covered with fiberglass Have surface, have not been completely satisfactory in eliminating the defects mentioned.

The invention is therefore primarily based on the object to provide a smoke generator for mosquito wraps, which in the A mosquito wrap is able to keep it elastic to prevent fire going out, heat transfer, and adhesion and build-up to prevent tar and ash, etc., so that the mosquito wrap can burn evenly and safely. In addition is used as a means of holding the mosquito wrap in the container composed of the bowl-shaped housing and the lid a pair of fiberglass nets made by coarsely interweaving twisted fiberglass yarns that make up a large number of Contain fiberglass fibrils, in mutually perpendicular directions are made.

The invention is also based on the object of a smoke generator that is able to prevent the mosquito wrap from sliding down between the holders for as long he's hung. For this purpose, in the central part of the holding surface of that fiber optic network, a non-combustible element attached, which is made of suitable material and in a suitable shape and, for example, a layer or accumulation of asbestos or fiberglass. The invention is also based on the object of creating a smoke generator for mosquito compresses which is unimpeded Visibility of the accumulated amount of ash, which is undesirable in the course of smoke generation by means of the mosquito wrap Heat storage is ensured and easy ash removal is guaranteed or allowed. An extremely wide-meshed grid is used for this purpose Fiberglass mesh stretched over the edge or over the edge of the housing.

Finally, the invention is based on the object of creating a smoke generator for mosquito compresses which prevents that the housing and the lid separate in the event of a shock exerted on the container when it is suspended and accidentally falls down or the like. This is the container

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designed so that the outer edge of the circular housing is curled by rolling, with the exception of two unrolled, diametrically opposite points, while the outer edge of the lid is provided with a pair of hooks that face the non-crimped sections of the container edge. The two hooks have been made by the outermost end of the outer edge of the lid has been bent upwards and fit into the outer groove made by the rolled up Edge portions of the housing is formed so that they are securely hooked into this groove.

The essence and the objectives of the invention are explained in detail with reference to three preferred embodiments of the smoke generator according to the invention illustrated by way of example in the drawing. Show it:

1 shows an interior view of one half of a first embodiment;

2 shows a central, vertical cross section through this half;

Fig. 3 is an external view of the other half of the first embodiment;

FIG. 4 shows a cross section along the line XX ¹ in FIG. 3 through this other half; FIG.

5 shows a central, vertical longitudinal section through the entire first embodiment;

Fig. 6 is an interior view of one half of a second embodiment and

7 shows an external view of the one half of a third embodiment,

one half of which comprises the housing of the smoke generator and the other half its cover.

3ei the first embodiment according to FIGS. 1 to 5 is a in the 1 and 2 shown housing A is provided, which consists of a pressed in a circular shape, thin metal plate, which the shape a perforated ashtray. The upper part of the outer wall of the housing A is initially bent outwards and

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then folded back inwards so that a clamping part A ^{1 with} a U-shaped cross-section arises at its outer edge, which clamps the edge of a glass fiber network 1a between itself. This net 1a is drawn under tension over the entire area of the adjacent edge surfaces. The upper, outer edge of the housing A is crimped into the shape of a roller so that an annular, outer groove 3 is created, except in two diametrically opposite sections of that outer edge, which is not rolled there, so that two diametrically opposite immersion openings 2 have remained. A ring 4 has a portion that penetrates the outer wall of the housing A twice.

A lid B shown in Figs. 3 and 4 for the case A is formed by pressing a thin metal plate into the shape of a circular bowl in the same way as the case A. In the upper surface of the cover B there is a plurality of openings 5 for the smoke outlet. The cover B, like the housing A, is provided at its lower flange part with a clamping part B 'which has a U-shaped cross section and into which the outer edge of a second glass fiber network 1b is inserted so that this network 1b over the entire area of the edge surface below Tension is maintained. The lower flange of the lid B is made into an annular shape so that it fits into the inner outer surface of the upper flange part of the housing A using a certain elasticity. A pair of two diametrically opposed hooks 6 is made by breaking out the lower flange (forms the outer leg of the clamping part 3 ') of the lid B and then outward rich. A bent tab 6 ¹ has been formed by bending the extreme end of each hook 6 upwards. The hooks can be manufactured and arranged in such a way that a separate metal part is brought into an L-shape and one side is ^{welded to the back of the clamping part B 1 of} the cover B. Optionally, the hook can be designed without a bent tab 6 ¹ .

The two glass fiber networks stretched over the touching edge surfaces of the shell-shaped housing A and of the cover 3 1 are made by weaving twisted wires crosswise

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made from a bundle of fiberglass yarns with a coarse mesh. Optionally, the nets can consist of an ordinary, mesh-woven fabric. For the networks drawn 1 the wire thickness is about 0.5mm with a mesh size of about 3min.

When using the first embodiment of the smoke generator according to the invention, a lighted, spiral-shaped mosquito wrap C is placed on the fiberglass mesh 1a of the horizontally arranged housing A, the hooks 6 of the cover B being arranged at the immersion openings 2 of the housing A. The cover B is placed on the housing A so that the outer circumference of the lower flange on the cover 3 rests against the inner circumference of the upper flange on the housing A, whereupon the housing and the cover are rotated in circumferential direction relative to one another as long as their edges are aligned contact under sliding friction so that the two parts are finally joined together, as shown in FIG. With the aforementioned relative rotation, the hooks 6 on the cover B slide away from the dip openings 2 into the outer edge groove 3 of the outer flange on the housing A, so that there is a fixed, detachable (Renk) connection between the cover B and the housing A. Even without an angled tab 6 ¹ at their end, the hooks 6 are able to hold the cover B firmly if it is designed so that it comes into engagement with the lower flange of the outer annular groove 3.

The described first embodiment for holding the example Incense-producing, lit mosquito wrap C is either hung up by means of the ring 4 or placed on it, for example on the floor or on a table. The first embodiment described, in which the fiber optic networks are stretched over the adjacent circumferential surfaces of the cup-shaped housing A and the cover B, the so are connected to one another so that they can be easily joined and separated with their outer, mutually contacting parts allows a simple and safe arrangement of the

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Mosquito wrap C and because the wrapping of the wrap C takes place between the highly elastic nets 1, it does not cause any breakage of the wrap, the smoke of which contains incense. Because the roll C, which is turned into smoke between the two nets 1, is held between the glass fibers, which are excellent heat insulating, the effect of the sudden removal of heat does not occur in the roll C, even if its smoke-generating portion is in contact with the networks 1. The wrap is completely turned into smoke to the end. The ash resulting from the generation of smoke falls through the openings in the riaschen of the nets 1 down onto the side of the housing A or, if the smoke generator is suspended, onto the side of the cover B, so that only an extremely small part of the ash is on the holding surface of the roll remains and as a result, even with repeated use, there is no interruption in the generation of smoke. In addition, the smoke generator is suitable for repeated use over a long period of time without the need for cleaning, because the tar produced during the generation of smoke has less of a tendency to adhere to glass fibers. In the smoke generator according to the invention, the glass fiber nets of which serve as a holder of the mosquito wrap, as mentioned, have the property of excellent thermal insulation, the container consisting of the housing and cover is not unusually hot and in particular is prevented from the appearance in which the spiral mosquito wrap tends to ignite in different places at the same time, which up to now often had to be observed when the smoke generator was hung up. The smoke generator according to the invention thus helps to eliminate the risk of disaster such as fire, fire, etc., which results from the overheating of the container. The lid 3 shown in Figs. 3 and 4, which is provided with the hooks 6, which have those upwardly bent tabs 6 ¹ at their front ends, has its bent tabs 6 ^{1 arranged} in the edge groove 3 of the housing A when it, is connected to the housing A as described above. Accordingly, in comparison with the case in which the cover 3 does not have any angled tabs 6 ¹ on the hook 6, the smoke generator

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has the property of being excellently shock-resistant.

In other words, if the hanging ring 4 is accidentally detached from its wall hook during use of the suspended smoke generator and the smoke generator falls vertically downwards, an impact is caused by the free fall in the direction of the plane in which the housing A and the Cover B are connected to each other. This impact force initially acts as a force compressing the circular container in the vertical direction when it lands and is then converted into a repulsive force within the container and continues to act in the sense of expanding the container housing in the vertical direction. If, therefore, the hooks 6 are arranged at an almost 45 incline to the horizontal plane, they are in a position in which the deformation of the container housing caused in the event of the fall is the least possible. The repulsive force also acts on hooks without angled tabs 6 ¹ , but such a correct use is not necessarily practiced in the smoke generator according to the invention, which will be used very frequently by many users. So if the bent tabs 6 ^{1 are present} at the outer ends of the hooks 6, regardless of the position of the hooks 6 in the edge groove 3 of the housing A, with the exception of the immersion openings 2, the hook-fixing effect of the groove sufficiently ensures that the sudden Separation of the lid 3 and the case A is prevented, thereby avoiding unexpected accidents.

The second and third embodiment according to FIGS. 6 and 7, respectively,

which differs from the first only in / housing half, while the cover halves of all three embodiments are the same. The second embodiment according to FIG. 6, which in this sense represents a variant of the first embodiment, also has a housing A which is similar to that of the first embodiment. A glass fiber net 1a is stretched over its edge surface so that it is in the state of tension, and in the central part of the inner surface of the net 1a there is an auxiliary refractory one

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Kleranplatte 7 provided, which is made of fused glass fibers or compacted asbestos. The part 7 can also be on the Housing A facing side of the network 1b can be arranged in the cover 3. It can for example by a wire or the like be fixed in its position.

The nets 1 provided with the clamping plate 7 carry this part so that it protrudes beyond the holding surface of the mosquito wrap C and can therefore be used to target the central area to reinforce acting holding force, which would otherwise be relatively smaller than in the edge part, in order to prevent the loop in particular slides down between the nets when using the smoke generator when hanging.

In the third embodiment, the housing A according to FIG. 7 is designed in such a way that a glass fiber network 1 a with extremely wide meshes 8 is present, the width of which corresponds to the radius of the housing A. Namely, the net 1a is made of glass fibers that are bundled, fused and formed into a cross shape with the four end portions held by the clamp part A ^{1 of} the housing A. The shape of the meshes 8 of the network 1a can, however, be chosen freely, so that any radial, crosswise or other arrangement results. However, the mesh should be of a size which facilitates observation of the bottom of the housing A from the outside because of the ash accumulation. The smoke generator, whose fiberglass net 1a is stretched over the edge of the housing A with large meshes, allows a direct observation of the amount of old ash accumulated in the housing A when the user is about to put a newly lit mosquito wrap C χι the housing. It is also possible to know the amount of accumulated ash which has a tendency to become a viarms pe icher during use, and this is an impression which makes the user realize the danger of fire. In addition, the large size of the meshes 8 of the container is useful in removing the ash from the housing A in that it allows the ash to be removed easily and effectively.

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L e r s e i t e

Claims (5)

EXPECTATIONS Smoke generator for burning off a spiral wound A strand of a material whose combustion smoke fights mosquitoes (mosquito wrap) with a breakthrough-free housing (A) and several smoke exhaust openings (5) having cover (B), which on outer, annular edges form-fit to a Bowl-shaped container for the mosquito wrap (C) are connected in which two fiberglass nets holding the mosquito wrap (1) are stretched from the edges of the housing and its lid. 2.) Smoke generator according to claim 1, characterized by an auxiliary pressure on the center of the mosquito wrap (C) exercising, fireproof clamping plate (7) which is attached to the inside of one of the two fiberglass networks (1). 3.) Smoke generator according to claim 1 or 2, characterized in that the glass fiber network stretched out from the edge of the housing (A) (la) has coarse meshes (8). 4.) Smoke generator according to one of claims 1 to 3, with a circular Container, characterized by a bayonet connection (2-3-6) of the lid (B) with the housing (A), which on Housing one with two diametrically opposite immersion openings (2) provided edge groove (3) and on Lid has two diametrically opposed hooks (6) with angled tabs (6 *) that fit into the annular groove engage and fit through the immersion openings. 5.) Smoke generator according to one of claims 1 to 4, characterized in that the edges of the glass fiber networks (1) of clamping parts (A ¹ , B ') of the housing (A) and the cover (B!) Are held, which by Outer flanges are formed.