DE8316311U1 - FIREPLACE REPLACEMENT PRODUCT - Google Patents

Description

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The invention relates to a new replacement product for firewood and its manufacture.

It is known that the use of real firewood for open fireplaces has a number of disadvantages brings. For example, wood is difficult to store in today's city apartments. In addition, the wood is often still damp delivered and must be stacked to dry. In addition, wood is scarce worldwide and therefore expensive.

Because of these disadvantages, firewood substitute products have already been developed and offered. It deals On the one hand, they are extruded wood waste (e.g. wood shavings) and, on the other hand, roller-shaped compacts from a mixture of paraffin and sawdust, While the former product because of its compact Condition both in terms of its ignition and its flame development only very poor burning properties has, the second-named product burns better, but real firewood does not come still close in appearance in terms of burning properties.

The invention is based on the object of a firewood substitute product to create, which both in appearance and in its burning properties the firewood as possible comes close. The product should also be easy and cheap to manufacture and easy to store.

This object is achieved in that one has an enveloping body (Sleeve) made of flame-retardant material that gives the shape and color of logs or round wood and it with one or more prefabricated interruptions, which are used as the target ignition or burning point act. This can be done, for example, by placing a few or numerous over the entire upper sleeve

surface regularly or randomly distributed holes of about 10 to 20 mm in diameter (for example at a distance of about 30 to 80 mm) and finally the envelope is filled with the actual fuel. The latter can be done by pouring or pressing in happen.

Another possibility is to provide the envelope body enclosing a combustible filling on its outside with one or more ignition strips or bulges extending in the longitudinal direction: The envelope body can be provided with one or more rows of holes and then with the polymerizable Fill liquid (with a hardening substance for the purpose of later solidification) flammable filling material. It is used, a slight excess, so that the liquid from the holes I out and overflowing during hardening | is formed into a strip covering the respective row of consecutive holes (see FIG. 1) -.

According to a further embodiment of the invention, the flame-retardant enveloping body is no longer provided with holes, but with a longitudinal slot (gap) so that when filling the flammable Mass of the excess oozes out of the slot and during the solidification process to one of the slot overlapping bar or longitudinal bead is formed.

The flame-retardant sleeve can expediently be made of cardboard, glass fiber fabric, cardboard, soda kraft paper,

flame-retardant plastic and / or poorly inflammable composite films are produced, with also an intermediate aluminum layer can be provided to further reduce the flammability of the envelope. 35

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The usual charcoal lighter emulsions with a hardener (so-called. "White coal lighters", see DE-PS 1 504 012). Such emulsions can possibly also with wood flour, Sawdust etc. are enriched. Furthermore, mixtures of wood waste (wood chips, wood flour, chips) and paraffins or waxes (approximately in a ratio of 2: 1 to 1: 2) and / or mixtures of wood waste (preferably wood flour) and waste paraffins or by-products of stearic acid production (distillation residues) proven to be useful.

The shape of the enveloping body can (as shown in the attached Figures 1 and 2) cylindrical, but also rectangular or prism-shaped or irregular (e.g. after a natural log).

The firewood substitute products according to the invention basically have the advantage of multiple design options.

from the usual roll (roller) shape to log-like Triangular fora up to gnarled branch shapes blown or pressed from (flame-retardant) plastics. They can therefore not only be viewed as a substitute, but even as a perfect imitation of firewood

especially because of the restrained combustion slowed down by the shell material (initially only at the holes and only later across the entire enveloping body) a flame image can be generated similar to that of the burning Wood is very similar. Because of the flame-retardant shell, they keep the contents even after igniting their shape for a long time.

The finished products are expedient (to avoid fuel losses to prevent) in plastic film (e.g. cellular glass film) sealed. They can be used from it

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taken out, ignited at the ignition strip and with up the bar in the chimney. Depending on the number of holes or width of the slot as well Depending on the amount of fuel, the burning time of a "log" can be up to 3 hours.

The products according to the invention can of course also be used for display purposes. It is also possible sis to generate light, e.g. to be used as an emergency or warning light; however, it is advisable to check the number of To significantly reduce holes in the shell, possibly even to provide only one opening.

The following exemplary embodiments explain the invention without restricting it:

example 1

Hard cardboard sleeve, approx. 50 mm outer diameter, wall thickness 2 mm, length 250 mm, provided with 4 opposite rows of 8 holes each with 10 mm diameter. After sheathing the case, it was filled with a charcoal lighter emulsion (based on petroleum, emulsifier, urea-formaldehyde resin, hardener). After a standing time of approx. 20 minutes, the filled tube (weight approx. 300 g) can be packaged or used. The burn time is about 60 to 90 minutes.

Example 2

Triangular shaped body made of impact-resistant polystyrene. Length 300 mm, side length of the cross-sectional triangle 60 mm, on each side 5 mutually offset holes of 16 mm (to be attached later), filled with a mixture of softwood flour (approx. 40 %) and (waste) paraffins (approx. 60 96), the pressed into the sleeve or by pouring the liquefied paraffin mixture onto the previously

dosed wood flour can be obtained. Burn time approx. 70 minutes.

Example 3

Sleeve tube made of aluminum (composite) foil roughly the dimensions listed in example 1, e.g. with 3 rows of 4 holes each with a diameter of approx. 12 mm. A mixture of the hardened coal lighter emulsion and an additive was used as a filling of 30 wt .-% wood flour is used. Objects of this design burn relatively slowly and leave more embers behind than when using the coal lighter emulsion alone. - Burns for about 70 minutes.

Example 4

Irregular blown hollow body made of impact-resistant polystyrene with staggered nozzle holes ¹¹ , filled with a mixture of approx. 50 % by weight wood flour, 45% by weight stearic acid (or by-products similar to stearin) and 5 % by weight potassium nitrate as a combustion promoter The mixture must then be pressed into the casing - Burns for about 55 minutes.

Example 5

a) enveloping body

Cylindrical, slotted hollow body made of glued cardboard or glued paper analogous to the Hollow cores / tubes of household crepe rolls.

Length 25-35 cm, clear width approx. 3-5 cm, wall thickness 1-2 mm. Corrugated cardboard can also be used *

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b) filling

Usual mass for the production of grill lighter (basis: low-soot burning petroleum, emulsifier, Urea-formaldehyde resin, hardener). 5

c) Manufacturing

The sleeve described under a) is placed vertically in a suitable shape, which the filling and enables the ignition strip (ignition bead) to be formed at the same time. The filled sleeve can through Unfold or eject from the mold after the filling has hardened (20-30 Minutes). The finished product is then sealed in a cellulose film.

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Claims (14)

sayings 1. Firewood replacement product /, characterized in that it consists of a flame-retardant, with a sol-ignition point acting pre-fabricated interruptions provided enveloping body (sleeve), which one encloses flammable filling. 2. Product according to claim 1, characterized in that it is the prefabricated interruptions to holes regularly or randomly distributed on the sleeve surface. 3. Product according to claim 1, characterized in that the enveloping body has an or on its outside has a plurality of ignition strips or bulges extending in the longitudinal direction. 4. Product according to claim 3, characterized in that the ignition strip (s) one or more are in longitudinally extending row (s) of holes covered (or cover). 5. Product according to claim 3, characterized in that the ignition strip has a longitudinal direction Slit (gap) covered. 6 ο Product according to claim 1, characterized in that hard cardboard, natural kraft paper, flame-retardant plastic, poorly inflammable plastic foils or glass fiber fabrics are used as the sleeve material » 7. Product according to claim 6, characterized in that the poorly inflammable composite films MM - ■ Ip. Ii ti - ·, a <· additionally have an aluminum intermediate layer. 8. Product according to claim 1, characterized in that the charcoal lighter emulsion provided with a hardener is used as the filling be used. 9 · Product according to claim 8, characterized in that the emulsion is enriched with wood waste is. 10. Product according to claim 1, characterized in that the filling consists of mixtures of wood waste with paraffins, viaxxes and / or stearic acid or by-products of stearic acid production exist. generation, e.g. as an emergency or warning light. 20th 12. A method for producing the product according to claim 1, characterized in that / one in a flame-retardant, with breakthroughs (x-holes) Fills the sleeve with a flammable material. 13. The method according to claim 12 ^ characterized in that that one fills the said shell with a coal lighter emulsion, possibly enriched with wood waste. 14. Process for the production of the product according to claim * y { characterized in that a small excess of liquid Fe ^ e isc is sunk into a flame-retardant sleeve with openings (holes) .BS.