DE7812031U1 - PERFORATED STONE, IN PARTICULAR LARGE BLOCK BRICKS - Google Patents

Description

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Company Josef Braun
M. Rank

799o Friedrichshafen 24

Perforated stone, especially large block bricks

The invention relates to a perforated stone, in particular a large block brick, which is one by webs and
Has slots formed slot perforation, the in
The heat flow direction of the stone extending webs are formed as mutually parallel partition walls, dutch the
the axially perpendicular slots arranged one behind the other
are divided into individual rows of slots.

Are such with transverse to the heat flow direction slots \ provided large-block bricks have indeed compared to bricks ^ i with the heat flow in the direction extending slots comparable s see a greater thermal insulation on the other? aligned and thus long crossbars that hold the stone on
pull straight through the entire length, but tear
often when drying and / or burning. This is upon it
attributed to the fact that the long transverse webs the shrinkage of the
Clay material when drying and its renewed expansion when
Can't compensate for the heating sufficiently? so that it is in
the partition walls and / or the transverse webs develop cracks I or tear off the transverse webs from the partition walls. The "reject rate" is therefore related to the production of these
on the thermal insulation advantageous large block bricks very large.

7812031 08/17/78

It is therefore the object of the invention to provide a perforated stone, in particular to create large block bricks of the aforementioned type with slots running transversely to the direction of heat flow in which no cracks occur in the partition walls and / or the transverse webs during drying or firing. Rather, it should be achieved that changes in length of the clay material in the transverse direction are easily absorbed and compensated for by the transverse webs without causing stress cracks in this, so that damage during drying and firing largely avoided will.

According to the invention, this is done in the case of a perforated stone which |

a slotted hole formed by webs and slots c |

h , where the |

Webs are designed as parallel partition walls, | through the I | Slots are subdivided into individual rows of slots as a result f i |

I i achieves that the slots of two adjacent slot rows | |

arranged offset from one another in the direction of heat flow are net in such a way that the transverse | 1 ridges of the stone on each of the partition walls are interrupted | 1

and approximately in the area of the slots of the adjacent row of slots I I

merge into the partition walls.

7812031 08/17/78

It is useful here to have a uniform slot perforation to get the slots of two adjacent rows of slots offset from one another in such a way that the transverse webs a row of slots each run in the middle of the slots of the adjacent row of slots.

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To compensate for the offset of the slots in two adjacent rows of slots, it is also appropriate to use one of these

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Rows of slots in the outer area with heat flow direction to provide extending slots, with the in the outer area to increase the strength in the direction of heat flow extending slots provided slot row alternately one or more, adjoining this have slots running transversely to the heat flow direction and one or more slots extending in this can. As a result, the changes in length are even better compensated for during drying.

If a large block brick according to the invention is formed by the slots of two adjacent rows of slots in the heat flow direction are arranged offset from one another, so it is possible to take advantage of the arrangement transversely to the Heat flow direction result, namely high thermal insulation and high section modulus through the partition walls when cutting off the Clay material to be used without the stone having long transverse webs that can tear during drying and firing. By moving of the slots in two rows of slots, the transverse webs on the partition walls are interrupted, so that the shrinkage and expansion of the clay material can be well balanced. The interrupted transverse webs thus point in connection with the Partition walls have a high degree of elasticity, which absorbs such stresses and counteracts the formation of cracks will. The perforated stone formed according to the invention can nevertheless be manufactured in the same way as other large block bricks. During drying and firing, however, there is no longer any rejects caused by the formation of cracks.

Further details of the perforated formed according to the invention Steins can be found in the exemplary embodiments shown in the drawing, which are explained in detail below. In each case show in section:

7812031 08/17/78

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Fig. 1 a provided with a slotted stone whose Sch3, Itze. Are disposed transversely to the heat flow direction and offset from each other _/ and

Fig. 2 shows the stone according to Fig. 1 with a modified slot

perforation.

The perforated stone designated in Figs. 1 and 2 with 1 has a slot perforation, the slots 7, 7 ', 7 ¹ ' ... run transversely to the heat flow direction A and through partition walls 6, 6 ', 6 "., The are arranged perpendicular to the outer walls 2 and 3 of the stone 1, are divided into individual rows of slots 8, 8 ', S' ¹ ... are. The slots 7, 7 ', 7 ¹¹ ... of each row of slots are defined by transverse webs 1o, 1o', 1o ..., which are directed parallel to the outer walls 2 and 3 or perpendicular to the walls 4 and 5, separated from each other.

In order to subdivide the transverse webs 1o, 1o ', 1o''... and in this way to be able to absorb and compensate for changes in length of the clay material in the transverse direction, the slots 7,7', 7 '' are. _4th of each row of slots offset in heat flow direction A with respect to the slots of the adjacent row of slots. The transverse webs 10 and 1ο ^{11 of} the rows of slots 8 and 8 ¹¹ go »Here approximately in the middle of the slits 7 'of the ^{row of slits 8' into the partitions 6 and 6 1} separating them from one another, so that the transverse webs 1o, Ιο ¹ , 1ο ¹ '... are interrupted on every partition wall. This creates a high level of elasticity and changes in the material caused by drying and firing cannot lead to the formation of cracks in the intermediate walls β, β ', β ¹¹ ... and / or the transverse webs 1o, 1o', 1o '' ....

7812031 08/17/78

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To connect the individual stones with each other is in the

Outer wall 5 is molded into a mortar groove 11;

a thumb hole 12 is provided approximately in the middle of the row of slots 8 ^1.

To compensate for the offset of the row of ^{slots 8 with respect to the row of slots 8 1} , the latter is provided with slots 9 extending in the heat flow direction A in the outer area. The row of slots 8 'as well as the other rows of slots that are the same as this can, however, as is shown in FIG. be equipped. This increases the strength and even better balances out the stresses that occur in the transverse direction.

A 2861 it
April 17, 1S7I

7812031 08/17/78

Claims (1)

1. Perforated stone, especially large block brick, the one has slot perforations formed by webs and slots, those running in the direction of heat flow of the stone Webs are designed as mutually parallel partition walls through which the axially perpendicular thereto one behind the other arranged slots are divided into individual slot rows, characterized, that the slots (7,7 *, 7 "- ..) of two adjacent rows of slots (8,8 ', 8" ...) are arranged offset from one another in the heat flow direction (A), in such a way that the rows of slots (8 , 8 ', S ¹¹ ...) dividing transverse webs (1o, 1ο ¹ , 1ο ¹¹ ...) of the stone (1) on each of the partition walls (6,6 ·, 6 ·' ...) are interrupted and approximately merge into the partition walls ^{(6.6 1 JO 1} '...) in the area of the slots of the adjacent row of slots. 7812031 17.08..7JB * * It 2. Perforated stone according to claim 1, characterized in that that the slots (7, 7 ¹ ) of two adjacent ^{rows of slots (8, 8 1} ) are offset from one another in such a way that the transverse webs (TO, 10 ') of a slot edge (8 or 8') are each in the middle of the slots (7 ¹ or 7) of the adjacent row of skis (8 ¹ or S). 3. Perforated stone according to claim 1 or 2, characterized in that that to compensate for the offset of the slots (7, 7 ¹ ) of two adjacent ^{rows of slots (8, 8 1} ) one of these ^{rows of slots (8 1} ) is provided in the outer area with slots (9) extending in the direction of heat flow (A). 4. Perforated stone according to claim 3, characterized in that ^{that the row of slots (8 1} ) provided with slots (5) extending in the heat flow direction (A) in the outer area alternately one or more slots (7 ') adjoining these and transverse to the heat flow direction (A) and one or more slots in this extending slots (9 ¹ ). 14. Ap / iJL 1978 ES
A 2861 7812031 08/17/78