CZ65998A3 - Heat-insulated combined section - Google Patents

Abstract

The outer and inner profiled metal sections (3,4) are joined by a mating profiled insulating rib (5,6) fitting in grooves in them. The insulating rib comprises two parallel walls (6.1,6.2) joined by transverse ribs so as to form lengthwise chambers (11). Dependent on the degree of resistance required to heat-transfer, the width of the insulating rib is 20,30,40 or 50 mm. The chamber width is equal to or less than the insulating rib width where the chamber height is 5 mm. or less, and wall thickness also regulates the resistance to heat transfer.

Description

Thermally insulated composite profile

Technical field

The invention relates to a thermally insulated name for windows, doors, facades and the like of metal and internal metal profiles, of a composite profile consisting of 7 external parts connected to each other via at least one insulating separating element provided with connecting profile sections and spaced apart, the profile sections being engaged. and the insulating separation element comprises two substantially parallel boundary walls forming a cavity therebetween, wherein transverse walls arranged transversely to the boundary walls which are the cavity inside the chamber separation separator may be disposed between the boundary walls.

divided into several consecutive cavity

BACKGROUND OF THE INVENTION

Such thermally insulated composite profiles are known, for example, from DE 42 38 750, wherein the insulating separating element or elements provide thermal separation (break of the thermal bridge) of the outer metal profile from the inner profile.

When dimensioning the insulating separating elements, it is to be understood that the transfer of heat from a warmer to a cooler metal profile can take place in three different ways, namely by conducting heat, by radiation, as well as by convection.

In conducting heat, thermal energy is transferred between directly adjacent parts of solid bodies or non-moving liquids or gases. The degree of heat conduction consists in a given

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-2 9 9 * 99 * * 9 ♦

9 9 9 · heat, which flows both through the bounding walls and through the still air inside the cavity or cavity chambers and flows outwardly into the air space delimiting the insulating separating element. The heat component flowing through the insulating separating element is substantially influenced by the thickness and width of the bounding walls as well as the thermal conductivity of the material. Mechanical quantities (strength, thickness, wall thickness, width), however, also determine the mechanical properties of the insulating separating element statically supporting the profile and forming its spacer wall element. Therefore, further reduction of heat conduction is usually limited by static reasons (wall thickness, width).

On the other hand, in the case of heat radiation, no transfer medium is required, so that the measurement of the insulating separating element is insignificant unless it is necessary to take into account shielding, reflections or other radiation influencing by the insulating separating element.

In the transfer, the thermal energy is transferred to the flowing liquids, gases or vapors by conduction of heat or possibly also by radiation, and is carried by convection. As the heat carrier decreases its density and gets in motion when it receives thermal energy, the heat transfer itself causes a thermal convection, referred to as free convection.

It has been shown that the formation of the insulating separator does not affect the heat transfer not insignificantly, so that the invention aims to improve the shape of the insulating separator in the composite profiles described above so that the convection share in the total heat transfer is reduced so that of the same order as clean heat conduction in still air, while simultaneously decreasing.

000 0 000 «0 ···· ♦ · 0 · ♦ 0 0 heat exchange by radiation (heat transport by long-wave infrared radiation). Thereby, it would be possible to reduce the heat loss by approximately 30% compared to the prior art.

SUMMARY OF THE INVENTION 1 q “ία 1 zh wn Λ 1 0711 Hooa 7th Ί ^- ί * τη rø α τλ ·» ί

J * »· 'j *’' j * ** - * · t— «_» * - ». u * .SwrB_ / W.4_l <> - 4 + k f Arf »2 '»' ** <- i U Cria.

a wall thickness of s = 0.5 mm and a thermal conductivity of lambda - 0.35 W / mK of the bounding walls is in the range of 0.15 m ² K / W to 0.30 m ² K / W to achieve thermal resistance of the insulating separating element The width (D) of the insulating separator is 20 mm to achieve a thermal resistance in the range of 0.25 m ² K / W to 0.50 m ² K / W the width (D) of the insulating separator is 30 mm to achieve a thermal resistance in the range from 0.35 m ² K / W to 0.65 m ² K / W is the width (D) of the insulating separating element 40 mm and for achieving a thermal resistance ranging from 0.40 m ² K / W to 0.80 m ² K / W the width (D) of the insulating separating element is 50 mm, the width (d) of the cavity or cavity chambers being chosen to be smaller or equal to the width (D) of the insulating separating element and greater than or equal to one third of the width (D) an insulating separating element if the height of the cavity or cavity is less than or equal to 5 mm; The cavity or cavity chamber width is in the range of over 5 mm to 20 mm and at least one transverse wall a height (h) to width (d) ratio of greater than or equal to 0.2 and less than or equal to 5 is selected, furthermore a thickness (s) walls are in the range of 0.25 mm to 1.0 mm, with the dependence of the thermal resistance on the wall thickness (s) according to the relation R (s) = R (s = 0.25 mm) + (s-0.25) / 0.25 * delta

The Ras value range for the delta R from 0.025 to 0.05, with an increase of 10% in the thermal conductivity of the bounding walls (6.1, 6.2) in the range from 0.15 W / mK to 0.40 W / mK, reduces the thermal resistance by 2 up to 4%. The intermediate values in relation to the thermal resistance interval and the width (D) of the insulating separating element can be linearly interpolated.

Even more favorable conditions arise when the height of the cavity or cavity chamber ranges from 5 mm to 20 mm and at least one transverse wall the ratio of height (h) to width (d) is greater than or equal to 0.5 and less than or equal to 2.

The object according to the invention is likewise solved by the fact that at the height (H) and width (D) of the insulating separating element (6) chosen for static or constructional physical reasons, as well as the wall thickness (s) and thermal conductivity of the lambda boundary walls, aspect ratio of height (h) to width (d) of the cavity or hollow chamber is selected so that the thermal resistance R calculated from the relationship R = 2.08 * (d / 100) ^{1 '43} -0.1 + P * f (lambda ) * f (s) * f (h / d) sec

P = a _Q + aL * H + and ² * H + a3 * H ³ 4- a4 * H ⁴ lie in the maximum region, with the coefficients a _Q = -0.06898 + 5.19 * 10 ⁴ * D ^-4 ' ¹⁷¹ , a _x = + 0.2005 - 21.86 + D ' ¹ ' ⁵³¹ , ^a 2 ~ +0.0425 - 0.00174 * d for D <30 or ^a 2 ⁼ + ° f ° ²⁹² 0.0013 * D for D> = 30, a ₃ = -1,384 * 10 ³ + 8,125 * ΙΟ “ ⁷ * D ² ' ²⁵⁸ , a ₄ = +4,632 * ίο' ⁵ - 3,528 * 10 ^-7 * D ^{1 '47} , and correction function f (lambda) = 1.27 to 0.807 * lambda ^1.04, f (s) = 1.324 to 0.458 with * ° ^'5 f (h / d) = (1-0,015 * ((h / d) -2.5 ) ² .

Additionally or alternatively, the side profile of the vertical height (h) to the horizontal width (b) of the cavity or cavity chambers may be sized such that taking into account the temperatures expected on the outer and inner metal profiles, the square of this aspect ratio multiplied by Rayleigh number (Ra _h ) less than 72.

The dimensionless Rayleigh number (Ra _h ) is the product of the Grashof number and Prandtl; la, characterized by using the properties of the fluid contained in the closed cavity, which can be assumed to be Pr = 0.71 for the air rivet. The size of the Grashof number is a measure for the heat that can be conveyed by convection from the warm side of the cavity or cavity chamber to the cold side. If the geometry of the insulating separating element, i.e. the aspect ratio h / d of the cavity or cavity chambers, now taking into account the expected temperature conditions, is chosen such that the product of the square of the aspect ratio and the Rayleigh number remains less than 72, ► <> r? £ => ^ ν'τ -ί-ι-seventh ν · ¹ · L + 1 Γ * ⁷ CA woman so that the heat transfer is the same size as when pure heat conduction in still air.

According to a preferred embodiment of the invention, the number of cavity chambers is determined from the width and height of the insulating separation element and from a predetermined aspect ratio of the cavity chambers.

Furthermore, it has proven advantageous if the wall thickness of each of the bounding walls is between 0.4 mm and 1.0 mm.

A preferred embodiment of the invention is characterized in that the insulating separating element comprises three hollow chambers and the geometric ratio relative to the outer contour of the insulating separating profile (width D and height H) lies in an interval

1.3 * D - 0.022 * D ² <H <4.14 * D - 0.088 * D ² .

It has proven advantageous within the scope of the invention if the thermal conductivity of the bounding walls is from 0.17 to 0.35 W / mK. In addition, it is recommended that when forming the insulating separators according to the above features the width of the bounding walls determining the distance metal profiles, selected according to the wall thickness, so that the specific heat flux q _Q , ie the heat flux through the bar 1 m long at rid 1 Ήλ Φ = 1 V is 1 n Ί Τ'Ί'Κ'Λ c: ribysn Ί Αιτΐ Ί η Ί chririv 71 ° 1 Ο οτχό

- - - - Z - - - - - - - ** J J - '-' -4. f V less than 0,02 W.

The advantages achieved in this way are essentially that, in addition to optimum thermal insulation, a favorable alignment of the thermal insulation function and strength is achieved in the formation of the insulating wall elements according to the above features. For this dimensioning, it is further assumed that the materials suitable for the insulating separating elements, in particular PVC, polypropylene and polyamide, have an increasing thermal conductivity, respectively. In order to increase their mechanical strength, additives are often added to these materials, which increase the strength but also the thermal conductivity.

If the width of the boundary walls is chosen to be small, the load on the insulating separating element is small, but at the same time it increases due to the small distance between the two metal profiles of the heat conduction. In addition, due to the lower load, it is possible to work with fewer additives, which again reduces the thermal conductivity.

The above-mentioned combination of parameters thus makes it possible to create a frame in which the required strength of the insulating separating element is achieved in addition to the optimum thermal insulation. Even with a larger width of the bounding walls, the deterioration of the heat flow is compensated by the dimensioning of the air-enclosing cavity chambers based on the gain obtained.

It is further proposed in the invention that the thickness of the bounding walls and / or the thermal conductivity of the bounding walls are chosen to be sufficiently small at a given interval that the width of the bounding walls is in the range of 20 to 50 mm.

ívj.

TYSí · ´ ´ T π m m 1 m, σ 11 i ι1ζ-5 -a 1 in jr x xu. If the clearance of the bounding walls is in the range of 1 to 15 mm, the width of the bounding walls is between 1 and 15 mm. However, it is particularly advantageous if the spacing of the boundary walls is between 5 and 10 mm.

The transverse wall or walls may be expediently arranged perpendicular to the boundary walls and be rigidly connected thereto. In principle, however, it is also possible for the angle formed between the transverse wall and the bounding walls to be in the range of 75 ° to 105 °.

In the context of optimizing the parameters, it has also proven advantageous if the wall thickness of the two boundary walls is in the range of 0.5 mm to 0.8 mm.

Finally, another advantageous embodiment of the invention is characterized in that the connection profiles are arranged symmetrically (centrally) to the insulation separation profile.

BRIEF DESCRIPTION OF THE DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic representation of an individual insulating separator for detecting dimensioning substrates; FIG. 2 is a sectional view of a composite profile; and FIG. 2.

DETAILED DESCRIPTION OF THE INVENTION

In Fig. 1 is made of thermally insulated profile, determined in particular ·

for windows, doors, facades and the like, the outer metal profile 2 and the inner metal profile 4 are indicated, which are connected to each other by an insulating separating profile 6, provided on both sides with a connecting profile section 5 to which it is connected

_Ί- Λ. 3 -. AI -4 «,,, 1 ,, -i Λ _u J Z. -X — 1 JL Ί _______ '

Λ. VJUpV VJ 1V-X1LLU Ο. VVO IU l_A J., _f p2_ _ L L, th JU4. Lil. Z. X AUVUVC profiles 3., 4. spaced apart.

The insulating separation profile comprises two substantially parallel boundary walls 6.1, 6.2 forming a cavity therebetween, wherein between the boundary walls 6.1,

6.2, transverse walls 10 extending transversely thereto are disposed, whereby the cavity within the insulating separating profile 6 is divided into a plurality of hollow chambers disposed one behind the other in the longitudinal direction of the insulating separating profile.

Heat transport can be calculated by suitable procedures, taking into account the aforementioned transport mechanisms. If the aspect ratio of the vertical height (h) to the horizontal width (b) of the cavity or cavities varies, it appears that the proportion of heat transfer from the warmer to the cooler metal profile attributable to convection in the hollow chambers 11 can be reduced so that its share of leadership and radiation becomes insignificant.

If it generates a thermal resistance for different widths of the insulating separating profile 6 over its height, an area is created in which the thermal resistance has a maximum. This shows that, taking into account the temperatures expected on the outer and inner metal profiles 3, 4 and appropriately selecting the aspect ratio of the hollow chambers, an improvement in thermal insulation can be achieved.

Even when plotting the dependence of the thermal resistance on the height of the insulating separation profile for different wall thicknesses, a maximum occurs within a certain value range. Although the variation in the wall thickness results in a change in the overall thermal resistance due to the varying heat conduction, the effect of the convective component is not discernible here.

This can be used in the dimensioning of the insulation separating profile 6 as follows. Starting from a wall thickness of s = 0, 5 mm and a thermal conductivity of lambda = 0.35 W / mK of the limiting walls 6.1, 6.2, it is determined to achieve a thermal resistance of the insulating separation profile 6 ranging from 0.15 m ² K / W up to 0.30 m ² K / W insulation profile width 6. 20 mm, ranging from 0.25 m ² K / W to 0.50 m ² K / W insulation profile width 6 30 mm, ranging from 0.35 m ² K / W to 0.65 m ² K / W insulation width (D) 6 40 mm and ranging from 0.40 m ² K / W to 0.80 m ² K / W width (D) of the insulation separating profile 6 50 mm. The width (d) of the cavity or cavity chambers is selected less than or equal to the width (D) of the insulating separating profile and greater than or equal to one third of the width (D) of the insulating separating profile to 50 mm if the height of the cavity or cavity 11 less than or equal to 5 mm. For a cavity or cavity height of over 5 mm up to 20 mm and at least one transverse wall 10, a height (h) to width (d) ratio of greater than or equal to 0.2 and less than or equal to 5 is selected. wall thickness (s) ranging from 0.25 mm to 1.0 mm, the dependence of the thermal resistance on the wall thickness (s) according to the relation R (s) = R (s = 0.25 mm) + (s- 0.25) / 0.25 * delta R and with a delta R value range from 0.025 to 0.05. Increasing the thermal conductivity of the boundary walls (6.1, 6.2) by 10% in the range between 0.15 W / mK and 0.40 W / mK leads to a reduction of the thermal resistance of 2 to 4%, which is taken into account for the selected output quantities.

• «

In determining the shape of the insulating separation profile, it is then necessary to proceed in such a way that the number of cavity chambers 11 is determined from the width and height of the insulating separation profile and a predetermined aspect ratio.

If the insulation separation profile comprises three cavity chambers 11, the aspect ratio can be easily estimated: The geometric ratio to the outer contour of the insulating strip (width D and height H) should then lie within the interval 1.3 * D - 0.022 * D ² < H <4.14 * D - 0.088 * D ² . For a different number of hollow chambers 11, corresponding interval data may be determined.

In the embodiments shown in Figs. 2 and 3, a composite profile is used at the window, but only the lower sash and the lower profile of the window frame are shown. Both the window frame profile 1 and the sash frame profile 2 are designed as a thermal insulated composite profile and also each comprise an outer metal profile 2 and an inner metal profile 4, which are connected to each other via two insulating separating profiles 6 each provided with two The outer and inner metal profiles 4, 4 are kept apart from each other by the insulating separation profiles 6. The connecting profile sections 5, which have a substantially dovetail shape, fit into the corresponding receiving grooves of the metal profiles 2/4.

The glass pane 7 itself is fixed to the sash profile 2 by means of the glazing bar 9 over the glazing gasket 8.

Insulating separation profiles 6 again comprise two substantially parallel boundary walls 6.1, 6.2,

4 * 44 *

4 forming a cavity between them. The boundary walls 6.1, 6.2 are connected to one another by a plurality of transverse walls 10, the number of transverse walls 10 depending on the boundary conditions already explained.

2 and 3, the transverse wall 10 is oriented perpendicular to the boundary walls 6.1, 6.2 and is rigidly connected thereto. However, it is also possible to orient these transverse walls 10 at an angle of 75 ° to 105 °, or at an even greater angle with respect to the boundary walls 6.1, 6.2, provided that this does not greatly impair the thermal insulation.

The wall thickness of the boundary walls 6.1, 6.2 may range from 0.4 mm to 1 mm, the wall thicknesses of the two boundary walls 6.1, 6.2 being identical to each other. It has proven particularly advantageous if the thickness of the bounding walls 6.1, 6.2 lies in the range from 0.5 mm to 0.8 mm.

When selecting the material for the boundary walls 6.1, 6.2, care should be taken that the thermal conductivity L is between 0.17 and 0.35 W / mK. It is to be understood that adding additives to the material increases strength but also increase the thermal conductivity, so it is necessary to find a compromise within the interval proposed by the invention, but recognizes that at a corresponding width and thickness of the bounding walls, the specific heat flux q _Q remains, flows through the boundary walls 6.1, 6.2, less than 0.02 W. Since the too wide width of the boundary walls 6.1, 6.2 leads to an increase in load, the thickness of the boundary walls 6.1, 62 and / or the thermal conductivity must be chosen sufficiently small enough in that the width of the bounding walls 6.1, 6.2 lies in the range »4 4 4 4 4 ··« of 20 to 50 mm.

In the embodiment according to FIG. 2, the connecting profile sections 5 are symmetrical, i.e. positioned centrally with respect to the insulating separating profile 6. However, it is possible to mount the connecting profile sections 5 asymmetrically on the insulating separating profile 1, imposed on the boundary

IVPiS walls 6.1, 6.2. Such an example is shown in Fig. 3, in which both the insulating separation profiles 6 in the window frame profile 1 and the upper insulating separation profile 6 in the sash frame profile 2 are formed as described above. In this case, there exist6.2 insulating separating profiles 6 in the window frame χ profile from the bounding walls 6.1.

Claims (16)

PATENT CLAIMS Thermally insulated composite profile, in particular for windows, doors, facades and the like, consisting of external and internal metal profiles (3, 4) connected to each other via at least one insulating separating element (6) provided with connecting profile sections (5), and kept in spaced relationship, wherein the connecting profile sections (5) fit into the receiving grooves of the metal profiles (3, 4) and the insulating separation element (6) comprises two substantially parallel mutually delimiting walls (6.1, 6.2) forming a cavity therebetween, between the boundary walls (6.1, 6.2), transverse walls may be disposed transversely to the boundary walls, through which the cavity within the separating element (6) is divided into several cavity chambers (11) arranged one behind the other, characterized in that wall s = 0,5 mm and thermal conductivity lambda = 0,35 W / mK boundary walls (6.1, 6.2) or In order to achieve thermal resistance of the insulating separator in the range of 0.15 m ² K / W to 0.30 m ² K / W the width (D) of the insulating separator 20 mm, to achieve a thermal resistance in the range of 0.25 m K / W up to 0.50 m ^from K / W, the width (D) of the insulating separator is 30 mm, to achieve a thermal resistance in the range of 0.35 mK / W to 0.65 m K / W, the width (D) of the insulating separator 40 mm and to achieve a thermal resistance in the range of 0.40 m K / W to 0.80 mK / W, the width (D) of the insulating separating element is 50 mm, the width (d) of the cavity or cavities being less or equal as large as the width (D) of the insulating separator and greater than or equal to one third of the width (D) of the insulating separator when the height of the cavity or cavity (11) is less than or equal to 5 mm; over 5 mm up to 20 mm and at least one cross-member In the wall (10), a ratio of height (h) to width (d) of greater than or equal to 0.2 and less than or equal to 5 is selected, wherein the wall thickness (s) is in the range of 0.25 mm to 1.0 mm. dependencies te'η cO ř ;? T: (<5 'i cz; j ^- θ · * η * .7 Ί j “. =» *? Ί 1 T? Γ "' - R (s = 0.25 mm) + (s-0.25) / 0.25 * delta Ras value range w nn T? nrJ Π HQR rlo Π n-ripa-m '? The conductivity of the boundary walls (6.1, 6.2) by 10% in the range from 0.15 W / mK to 0.40 W / mK leads to a reduction of the thermal resistance of 2 to 4% . The thermally insulated composite profile according to claim 1, characterized in that at a height of the cavity or cavity chamber (11) in the range of 5 mm to 20 mm and at least one transverse wall (10) the ratio of height (h) to width (d) greater than or equal to 0,5 and less than or equal to 2. Thermal insulated composite profile, in particular for windows, doors, facades and the like, consisting of external and internal metal profiles (3, 4) connected to each other via at least one insulating separating element (6), provided with connecting profile sections (5) and kept in spaced relationship, wherein the connecting profile sections (5) fit into the receiving grooves of the metal profiles (3, 4) and the insulating separation element (6) comprises two substantially parallel boundary walls (6.1, 6.2) forming a cavity therebetween, between the boundary walls (6.1, 6.2), transverse walls arranged transversely to the boundary walls can be disposed, the cavity inside the insulating separating element (6) being divided into a plurality of cavity chambers (11) arranged one behind the other, ) and the width (D) of the insulating separating element (6) selected from static or structural physics For environmental reasons, as well as the wall thickness (s) and the thermal conductivity of the lambda boundary walls (6.1, 6.2), the aspect ratio height (h) to width (d) of the cavity or cavity (11) is chosen such that odpor calculated from the equation R = 2 OS * (d / 100) ^{1 '43} -0, i + P * f (lambda) * f (s) * f (h / d) P = aT + and Q * H + a2 * H ² + a3 * H ³ -i- a ₄ * H ⁴ lie in the region of the maximum, with the coefficients a ^ = -0.06398 + 5,19 * 10 ⁴ * D ' ⁴ ' ¹⁷¹ , aj, = +0,2005 - 21.86 * D ^-1 ' ⁵³¹ , ^a 2 ⁼ + ° f ⁰⁴ 25 - 0.00174 * D for D <30 or a ₂ = -0.0292 - 0.0013 * D for D> = 30, and ₃ = -1,384 * 10 ^-3 + 8,125 * 10 ^-7 * D ² ' ²⁶⁸ , and ₄ = +4,632 * 10 ⁵ - 3,528 * 10 ^-7 * D ¹ ' ⁴⁷ , and the correction function f (lambda) = 1, 27-0,807 * lambda ^{1 '04,} f (s) = 1.324 to 0.458 with * °' ⁵ f (h / d) = (1-0,015 * ((h / d) -2.5) ^second Thermally insulated composite profile according to at least one of Claims 1 to 3, characterized in that the side profile of the vertical occurrence (h) to the horizontal width (b) of the cavity or cavity chambers (11) is dimensioned such that and the inner metal profile (3, 4) is the product of the square of this aspect ratio and the Rayleigh number (Ra ^) is less than the numerical value 72. Thermally insulated composite profile according to at least one of Claims 1 to 4, characterized in that the number of cavity chambers (11) is determined from the width and height of the insulating separating element and from a predetermined aspect ratio of the cavity chambers. Thermal insulated composite profile according to at least one of Claims 1 to 5, characterized in that the wall thickness of each of the boundary walls (6.1, 6.2) is between 0.4 mm and 1.0 mm. Thermal insulated composite profile according to claim 6, characterized in that the insulating separating element comprises three hollow chambers and the geometric ratio, based on the outer contour of the insulating separating profile (width D and height H), is in the interval 1.3 * D - 0.022 * D ² <H <4.14 * D - 0.088 * D ² . Thermal insulated composite profile according to at least one of Claims 1 to 7, characterized in that the thermal conductivity of the bounding walls (6.1, 6.2) is from 0.17 to 0.35 W / m.K. Thermally insulated composite profile according to at least one of Claims 1 to 8, characterized in that the width of the bounding walls (6.1, 6.2) determining the distance between the metal profiles (3, 4) is selected as a function of the wall thickness so that the specific heat flux q _o , that is to say the heat flux through a 1 m long strip at delta T = 1 K, flowing through the boundary walls (6.1, 6.2), remains less than 0.02 W. Heat-insulated composite profile according to at least one of Claims 1 to 9, characterized in that the thickness of the bounding walls (6.1, 6.2) and / or the thermal conductivity of the bounding walls (6.1, 6.2) are chosen so small that the width The boundary walls (6.1, 6.2) lie in the range of 20 to 50 mm. Heat-insulated composite profile according to at least one of Claims 1 to 10, characterized in that the clearance of the bounding walls (6.1, 6.2) is in the range of 1 to 15 mm. Thermally insulated composite profile according to at least one of Claims 1 to 10, characterized in that the clearance of the bounding walls (6.1, 6.2) is in the range of 5 to 10 mm. Thermally insulated composite profile according to at least one of Claims 1 to 12, characterized in that the transverse wall (10) is arranged perpendicular to the boundary walls (6.1, 6.2) and is rigidly connected thereto. Thermally insulated composite profile according to at least one of Claims 1 to 12, characterized in that the angle formed between the transverse wall (10) and the bounding walls (6.1, 6.2) is from 75 ° to 105 °. Thermally insulated composite profile according to at least one of Claims 1 to 14, characterized in that the wall thickness of the two boundary walls (6.1, 6.2) is in the range of 0.5 mm to 0.8 mm. Thermally insulated composite profile according to at least one of Claims 1 to 15, characterized in that the connection profiles (5) are arranged symmetrically (centrally) to the insulating separation profile (6).