Heat-insulation building brick

FIELD: construction.

SUBSTANCE: heat-insulation building brick comprises a structural body with at least one cavity and an insulation filler arranged in the cavity. Besides, the insulating filler comprises an insulating material arranged in a filling shell, and the insulating filler may have the first size when installed into an insulating building brick and the second size after installation into an insulating building brick, at the same time the above dimensions are substantially permanent, and the first size is smaller than the second size. Also the method of such brick production is described.

EFFECT: simplified manufacturing of a brick, higher heat insulation properties.

12 cl, 9 dwg

 

The present invention relates to heat insulating brick building, containing structural body with at least one cavity, and a heat insulating filler, located in the cavity, optionally, the invention relates to a method of providing thermal insulation of a building brick.

Despite the fact that new building materials and construction methods have been introduced over the last decade, traditional building of brick used and appreciated so far. The disadvantage of traditional building of brick, however, is that the degree of isolation of the ordinary, what with the constant increase in electricity prices and attention to the environment is a significant drawback. To improve the insulating capacity of building bricks was taken many attempts.

Currently on sale there are several types of insulating a building brick. One of these types of brick is Unipor Coriso, brick, filled with mineral granules, and the example of brick filled with mineral wool known under the trade name MZ8 from Mein Ziegelhaus. Other examples include bricks, filled with perlite (for example, Poroton-T8/T9 from Wienerberger).

The patent literature also includes various concepts for an insulated building brick. One if the development can be found in UK patent No. 461314, which refers to the brick filled with an insulating filler, such as glass. This is a traditional building of brick, filled with traditional insulating materials, at the time of writing of this patent more than 80 years ago, and this brick does not meet the requirements for modern building of brick from the point of view of the insulation properties and is not suitable for mass production.

A more modern example is the building brick in accordance with EP 1 752 593 A2. This brick building has essentially cubic case, containing many cavities, separated by walls and filled with an insulating filler. Building brick of the prior art provides insulating properties at the present time, but is not able to meet future requirements for insulating properties, and moreover is not ideal for mass production.

In the patent DE 20 2007 013074 U1 describes a vacuum insulating panel having a very high insulating ability. Vacuum insulating panel contains microporous material of the core, for example, from silicon aerogel, possibly with reinforcing fibers, for example, inorganic fibers, for example fibers of mineral wool. The core material is located in the shell, insulated and equipped with the hcpa is jonaprince metal case for example, aluminum foil. Mentioned, but in a different way is not confirmed that the panels can be installed in the cavity of the hollow bricks. The brick has a high insulating ability, but is, however, expensive and not suitable for mass production. Moreover, the vacuum insulating panel is fragile and susceptible to damage during installation in a relatively narrow cavity of a hollow brick. The shell and the film can, for example, easily scratched, causing the vacuum will be broken and insulating properties will deteriorate. Such probable damage to the insulating panel will destroy or reduce the insulating properties of bricks. Traditionally, such vacuum insulation panels filled with aerogel with the purpose of the aerogel performed the function of an absorbent air, which will, however, reduce the insulating capacity of the panel over time.

The present invention therefore is the provision of alternative insulating building bricks, allowing mass production.

This task is achieved by means of insulating a building brick in accordance with the introductory part, with the insulating filler contains an insulating material located in a gas shell. Filling the shell will provide the address for the easy insertion of insulating filler in the cavity without damage to the insulating material, thus, simplifying production. The insulating filler may have a first size during installation in insulated building brick and the second dimension after installation in insulated building brick, dimensions are essentially stable, and the first size is smaller than the second size.

Typically, the shell is a shell, which mechanically restricts at least one size of the insulating filler so that it matches cavity brick. In particular, the restriction of at least the same size may be withdrawn in order to allow the insulating material to exert pressure on the inner surface of cavity brick.

The insulating material may be any suitable material having a high insulating ability, that should be clear to experts in the given field of technology. In accordance with one embodiment of the insulating material contains at least one heat insulating material based on silicon, selected from the group consisting of aerogel, colloidal silica and precipitated silica, all of which are known to have very good insulating properties. Aerogels are known to possess excellent insulating properties, but also high cost. colloidally silica and precipitated silica have lower insulating ability (about 22-23 IMF/m*K) and thus lower cost.

In this context, an aerogel should be understood as any product from the dried gel, which is widely known as aerogels, xerogels and cryogels. These products are known to possess excellent insulating properties due to its large surface area, high porosity and a relatively large pore volume. They are produced by transformation into a gel fluid salt solution-gel and then removing the liquid from the gel to the pores in the gel is not destroyed.

Depending on the drying conditions, can be produced aerogels, xerogels or cryogels. When the wet gel is dried at temperatures above the critical point of the liquid, the capillary pressure is absent and, thus, the shrinkage is relatively small when the liquid is removed. The product obtained using such a process, has a high porosity and is known as aerogel. On the other hand, if the gel is dried by evaporation below the critical conditions, the result is a mixture of the xerogel. Despite the fact that there is nothing to prevent shrinkage in the production of xerogel material, usually retains a very high porosity and large surface area in combination with a very small pore size.

When the gel is dried in the process of cold drying, the result is a cryogel. These traditional aerogel, CNS is ogel and cryogel, despite the fact that they are good insulators, are also fragile, prone to cracking and require a long processing period.

The term aerogel should understand the aerogel, xerogel or cryogel, which additionally contain a matrix of fibers, and the matrix is used to harden the material, thus creating a high-strength product. These materials are known as matrix composites aerogel, xerogel or cryogel, and traditionally are made by saturating the reinforcing fibers flowing salt solution and gel, turning into a gel and then removing the liquid from the gel in such a way as not to destroy the pores of the gel. Supercritical drying, subcritical drying and cold drying leads, respectively, to the formation matrix composites aerogel, xerogel or cryogel.

The aerogel may have a thermal conductivity (the value of Λ), for example, from 9 to 22 IMF/m*K, with mineral wool may have a thermal conductivity (value ΛD; based on measurements in accordance with the European standard EN 12667 at 10°C), for example 30-40 IMF/m*K, so with the addition of aerogel in the bricks it is possible to improve the insulating properties of building bricks. For comparison, the perlite has a thermal conductivity (the value of Λ) for about 45-60 IMF/m*K.

Isolate the second material may be essentially incompressible, and filling the shell may be of any type wrapper for insulating filler in part or throughout to facilitate entry into the cavity of the brick. In accordance with one embodiment, however, the insulating material is compressible and filling the shell is essentially gas-tight film, which is in the form of a coating around an insulating material. Under compressible, it is understood that the insulating material can be compressed by at least 5%, preferably at least 10% of its volume or nominal thickness, no significant damage to the insulating material. Under essentially gas-tight means that the film will restrain the flow of gas to such an extent that the film will withstand the difference in pressure, such as 50 kPa, around the film for at least 10 minutes, preferably at least 1 hour. Thus, it is possible at least partially to pull the shell, whereby the shell and the insulating material will be compressed, thus allowing the easy insertion of insulating material into the cavity of the brick.

Overall sheath of insulating material, in addition, has the advantage that it can be used granular insulating material, without the risk that the insulating material will flow from the cavity, any potential prospect is dealing with associated with dust generation on production, etc.

Preferably it would be if the pressure difference can be maintained over an extended period, such as weeks, since the insulating filler may be thus compressed for efficient transport and storage and to remain compressed while entering in the cavity of the brick. On the other hand, it is preferable would be that the pressure difference can be quickly neutralized, for example, within a few minutes or less, so that the insulating filler could quickly be expanded after insertion into the cavity. This will eliminate the need to cut an opening in the film to expand insulating filler in the cavity for fixing the insulating filler in the cavity.

The insulating filler may be of such size to fit cavity bricks, so as to provide a clearance gap that allows you to easily place the element in the cavity. In accordance with one embodiment, however, the size of the insulating filler is designed to fit tightly fitted into the corresponding cavity. This is the most simple and effective way of fixing the filler in the cavity of the brick. An additional advantage is that the insulating and heat resisting properties of the bricks are not particularly limited by the adding the any additional adhesive substance or binder for bonding the insulating filler to the brick. Using landing with tightness of the insulating filler may be held in place in the cavity by means of friction between the insulating filler and the cavity walls.

The insulating filler may also contain additional materials, such as organic or inorganic fibers. In accordance with one embodiment, the insulating filler contains mineral fibers, such as fiberglass, stone wool or slag fiber, which can provide additional strength to the filler.

The insulating filler has a first size during installation in insulated building brick and the second dimension after installation in insulated building brick, dimensions are essentially unchanged, and the first size is less than the second size. The size is any size (length, width, height), which influence the simplicity of the premise of insulating filler in the cavity of the brick. As an example, the insulating filler may be compressed so as to have a smaller width if the width of the insulating filler determines will fit if it is in the cavity, while other dimensions may remain unchanged or even increase. As an example, the insulating filler may be extended in length so that its width was less in order to ensure easy installation, what if the width of the insulating filler determines fit whether he is in the cavity, the length is not affected.

The binder may be added to the insulating material of the insulating filler, if necessary. The binder may be both organic and inorganic. Examples of the inorganic binder is liquid glass, which has a good heat-resistant properties.

Brick can contain a single cavity, but in accordance with the embodiment, brick contains many cavities, and all cavities are filled with an insulating filler. This ensures high strength brick with a high degree of isolation. To ensure high strength, the brick must be more massive, at the same time to ensure a good degree of insulation bricks should be filled as much as possible insulating material.

The brick can be any type of building brick, made from any type of material such as baked clay, concrete, foam concrete, etc. In accordance with an embodiment, the structural body is made mostly of lime (Cao) and sand (SiO2), resulting in the so-called sand-lime brick. Method of production of such bricks provides the advantage that brick-baking may be carried out in autoclavable relatively low temperatures of about 200°C. Thus, it is possible to dispose an insulating filler in the cavity bricks to bricks that can contribute to economical manufacture.

The present invention also relates to a method of manufacturing heat-insulating building brick, the method includes the steps of providing a structural body having at least one cavity, providing an insulating filler containing an insulating material located in the refueling envelope, and location of insulating filler in the cavity. This method can be efficiently produced brick, has a high degree of isolation as the insulating filler will be easier to install into the cavity through the filling of the shell, and furthermore insulating filler will be protected during installation into the cavity, which otherwise may cause damage to the insulating filler.

The insulating material may be essentially incompressible, and filling the shell can be any type sheath of insulating filler in part or over the entire length, to facilitate entry in the cavity of the brick. For example, the insulating filler may be provided in the form of a roller, and filling the shell may be a tape for supporting the form roller in the course of entering into the cavity. After entering lenamore be cut to allow for expansion of the cushion to fill the cavity. In accordance with one embodiment, the insulating material is compressible and filling the shell is essentially gas-tight film located in the form of a coating around the insulating material, and the method comprises the intermediate step of applying a reduced pressure to the floor. This allows particularly effective to introduce an insulating filler as the filler is compressed during its placement, and can expand to fully fill the cavity.

In accordance with one embodiment, the method comprises an additional step of at least partial attenuation of low pressure on the coating, whereby the insulating filler will immediately expand to fill the cavity.

In accordance with one embodiment, the method includes a step of providing an insulating material by selecting at least one heat insulating material based on silicon from the group consisting of aerogel, colloidal silica and precipitated silica, whereby can be obtained bricks with a high degree of thermal insulation.

The bricks may be of any suitable size that should be clear to experts in the given field of technology.

The invention will be described in more detail in the example with reference to schematic drawings, on which:

1 shows a perspective view of a hollow building bricks,

figure 2 shows a section of a hollow building brick with the introduction of insulating filler

figure 3 shows a view in cross section of insulating filler for brick

figure 4 shows a view in cross section of an alternative insulating filler

figure 5 shows a top view of the heat insulating filler

on figa depicts a side view of the heat insulating filler

on fig.6b depicts a side view corresponding to figa, with the insulating filler under pressure

7 depicts a stage in the course of the premises of insulating filler in the brick

on Fig shows the stage after entering the insulating filler in the brick, and

figure 9 depicts the final stage of expansion of insulating filler in the brick.

Building brick 1 shown in figure 1, this brick 1 contains the structural body 2 with the cavity 8. The structural body 2 bricks in accordance with this simple embodiment is a traditional building of brick, made of baked clay. Figure 2 shows the input stage of the heat insulating filler 3 in the cavity 8 of the brick 1. Isolation filler 3 is compressed from the second size 6 (dotted line) to the first $ 5 is La install filler 3 in the cavity 8. As you can see, the first $ 5 is smaller d than the size D of the cavity 8.

Figure 3 shows a heat insulating filler 3 in cross section. Isolation filler 3 contains an insulating material located in a gas shell. In this embodiment the shell has the form of a tape 7a, wrapped around an insulating material and holding the insulating material can be compressed for easy insertion into the cavity. The insulating material may, in this embodiment, take the form of a roller. After entering into the cavity, tape 7a can be detached from the insulating filler to expand to fill the cavity (not shown).

Alternative gas shell in the form of a covering film 7b shows a view in cross section from figure 4. Using the covering film 7b can at least partially be pumped out of the inner portion of the filler 3, thus compressing the filler for easy insertion into the cavity of the brick.

The pumping of the filler 3 may be implemented in several ways. One of the simple examples shown in figure 5, which is a top view of a cylindrical heat insulating filler 3 in the covering film. Covering film has a hole 9, which can be used for pumping. Alternatively, the covering film 7b teploizolirovat is its filler can be equipped with a suitable valve.

Compression of insulating filler 3 by pumping is shown in schematic side views of the heat insulating filler 3 figa and 6b. On figa isolation filler 3 is shown in an uncompressed state, fig.6b isolation filler 3 is compressed to a smaller size by means of the suction device 10 connected to the hole 9. The smaller size is shown as a solid line, while the size of the uncompressed state shown by the dotted line.

Enter insulating filler 3 shows a view in cross section of figure 7. In the example shown, the suction device 10 is still attached to the heat insulating filler 3 for continuous pumping in order to maintain the insulating filler in a compressed state. In this case, the suction device 10 can be a suction disk forming part of the transport device for capturing, compressing and enter insulating filler 3 in the cavity. When disconnecting the suction device 10, the compressed isolation filler 3 will expand to fill the cavity.

Alternatively, the suction device 10 can be used only for pumping/compression insulating filler 3, after which the hole 9 of the covering film 7b may be sealed in order to maintain the compression. In this text the tea, you may need to pierce the covering film 7b, for example, by means of a sharp tool 11, as shown in Fig and 9 for isolation filler 3 can be expanded to fill the cavity of the brick 1. Alternatively, the covering film 7b or sealing the hole cover 9 may be gas-permeable, so that the vacuum inside the heat insulating filler 3 is lost in a relatively short period of time, for example, for a few minutes or hours, so that the insulating filler 3 will slowly expand to the second size 6 when installed in the cavity.

Despite the fact that filling the shell will tend to have a limited thickness, and therefore a limited impact on thermal properties of the brick with an insulating filler, it is preferable that the shell was made from a material with low thermal conductivity, or alternative to, the shell was removed after the installation of insulating filler.

1. Heat insulating building brick (1)containing a structural body (2) with at least one cavity (8) and an insulating filling (3)located in the cavity, characterized in that the insulating filler (3) contains an insulating material located in a gas shell, and an insulating filler can have a first size (5) when installed in insulated building brick and the second dimension (6) p is the next installation in insulated building brick, while the above dimensions are essentially constant, and the first size is smaller than the second size.

2. Heat insulating building brick (1) according to claim 1, in which the insulating material contains at least one heat insulating material based on silicon, selected from the group consisting of aerogel, colloidal silica and precipitated silica.

3. Heat insulating building brick (1) according to claim 1 or 2, in which the insulating material is compressible, and filling the shell is essentially gas-tight film located in the form of a coating around an insulating material.

4. Heat insulating building brick (1) according to claim 3, in which the size of the insulating filling (3) such that it can be clamped is placed in a corresponding cavity (8).

5. Heat insulating building brick (1) according to claim 1, in which the insulating filler (3) further comprises an organic or inorganic fibers, or their mixture, preferably mineral fibers such as glass wool, stone wool, or slag fibers.

6. Heat insulating building brick (1) according to claim 1, in which the insulating filler (3) further comprises a binder, preferably an inorganic binder such as water glass.

7. Heat insulating building brick (1) p is 1, where brick (1) contains many cavities (8), and all cavities filled with an insulating filler (3).

8. Heat insulating building brick (1) according to claim 1, in which construction the casing (2) is a silicate brick.

9. Method of manufacturing heat-insulating building brick (1), comprising the following steps in which: provide structural body (2)having at least one cavity (8), provide an insulating filling (3)containing an insulating material located in a gas shell, while the insulating filler may have a first size (5) during installation in insulated building brick, and the second dimension (6) after installation in insulated building brick, with specified sizes, essentially unchanged, and the first size is less than the second size, and place the insulating filling (3) in the cavity (8).

10. The method according to claim 9, in which the insulating material is compressible, and filling the shell is essentially gas-tight film, made as a coating around the insulating material contains an intermediate stage, which ensure the application of reduced pressure to the floor.

11. The method according to claim 10, containing an additional stage on which at least partially perform the weakening of reduced pressure at the opening.

12. The method according to any of PP-11 containing phase, which provide insulating material by selecting at least one heat insulating material based on silicon from the group consisting of aerogel, colloidal silica and precipitated silica.



 

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