DE29621419U1 - Insulated composite profile - Google Patents

Description

W. Hartmann & Co. (GmbH & Co.), Hamburg _# j _# ·· _{# B} j _# ·· _# .*·..*· Page

&igr; Description

The invention relates to thermally separated aluminium composite profiles for

4 Windows and doors, whereby the composite profiles are made of an aluminum

; inner shell and an aluminium outer shell, which is protected by at least

f, two insulating bars are separated from each other so that the inner and outer shell

7 are arranged parallel and spaced apart from each other. This arrangement

8, a cavity extends in the axial direction of the composite profile, which is formed by the aluminum outer shell and aluminum inner shell on the one hand and the insulating webs separating these aluminum profiles on the other. The connection between the aluminum shells and the insulating webs arranged between them preferably consists of a form fit created by rolling between the free ends of the insulating webs and corresponding nose-like projections formed on the aluminum profiles.

&iacgr;&ogr; Such composite profiles have long been known to the professional world, whereby a

i: common embodiment is characterized by the fact that the insulation bars

i _¥ made of glass fibre reinforced polyamide. The insulation bars mentioned

19 due to the interruption of heat conduction through the aluminium profiles from the

zo room side to the weather side and thus the avoidance of unwanted

si heat loss.

?i It is known that the thermal separation of the aluminium profiles, which is

24 insulating bars made of glass fibre reinforced polyamide, can be improved

2· is worthy of attention. In particular, aluminium composite profiles of the

2ü Heat losses due to convection in the insulation zone as described above

27 Hollow chamber and heat radiation from the aluminium inner shell to the AIu-

Zs minium outer shell not taken into account.

09.12.96

W. Hartmann & Co. (GmbH & Co.), Hamburg _# · _# ·· _{# #} j _# « _t ,"*..·· Page

·

·

The object of the present invention is to improve the thermal separation

1 ation of known aluminium composite profiles by reducing the heat

2 Losses due to convection in the insulation zone hollow chamber and due to heat radiation from the aluminum inner shell to the aluminum outer shell re-

j be reduced.

&lgr; The object is achieved according to the invention in that the insulating webs 1, 2

? at least one pointing into the interior of the insulation zone cavity

&iacgr; hollow profile body 3, which preferably forms one piece with the insulating web

: is molded.

&eegr; The hollow profile body 3 according to the invention has in a preferred embodiment

u shape has a substantially rectangular cross-section, with the

&igr; j Longitudinal webs 4, 5 facing the insulation zone cavity have at least the same length

i4 as the bridge web 6, which leads into the interior of the insulation zone hollow

I-: chamber facing ends of the longitudinal webs 4, 5 integrally connected to each other -

i<> det.

it, However, it is also conceivable that hollow profile body 3 according to the invention has a

19 may have other cross-sectional shapes, such as diamond-shaped, ellipsoidal, semi-2i: circular, oval, honeycomb or similar geometric shapes.

&zgr;.; The bridge web 6 preferably runs parallel to the insulation webs 1, 2, which

25 Longitudinal webs 4, 5 preferably run perpendicular to the insulation webs 1, 2.

2-t, however, it is also conceivable that the bridge web 6 is in an angular position relative to

2:- the insulation webs 1, 2, whereby the insulation webs 1, 2 and the bridge

20 steg 6 preferably describes an angle that is greater than 0°, but r smaller than 90°.

09.12.96

W. Hartmann & Co. (GmbH & Co.), Hamburg _&bgr; · _&phgr; ·· _# ^j _&ngr; ·* _&phgr; .·*..·* Page

It is also conceivable according to the technical teaching of the invention that one or ( both of the longitudinal webs 4, 5 deviate from the vertical with respect to the insulation web.

2, to which they are integrally formed, whereby the deviation from

the vertical preferably moves in the area of obtuse angles.

Since the insulation webs 1, 2 are opposite each other after rolling up, the hollow profile bodies 3 formed on the insulation webs are also essentially opposite each other. In a preferred embodiment of the invention, the

s hollow profile body 3 is formed eccentrically to the insulation webs 1, 2, whereby the

Longitudinal webs 4, 5 are always formed on the same side of the insulating webs with respect to the ic central axis of the insulating webs 1, 2. This anti-arrangement of the hollow profile bodies 3 with respect to the central axis of the insulating webs 1, 2

c enables the hollow profile bodies 3 to be offset laterally from each other,

η wherein a preferred arrangement of the hollow profile bodies 3 consists in that μ at least two hollow profile bodies 3 are positioned next to each other or are positioned one behind the other in μ direction 9 from the room-side aluminum half-shell 7 to the weather-side i6 aluminum half-shell 8.

is However, according to the technical teaching of the present invention,

iv It is conceivable that the off-center arrangement of the integrally formed

20 hollow profile body 3 can be deviated, and that the formation is centered

?&Lgr; or can be arranged at another location on an insulation web.

&agr; However, at least one hollow profile body 3 extends so far into the insulation zone 2.» hollow chamber that its bridge web 6 is at the same height as the

.;;· Bridge web of the opposite hollow profile body.

z: The previously described hollow profile bodies 3, which are integrally attached to the insulating webs 1, 2

ih are formed, have the advantage that when connected in series two-

09.12.96

W. Hartmann & Co. (GmbH & Co.), Hamburg _# · ·· j ·· ·· ·· Page

the hollow profile body divides the insulation zone hollow chamber into at least four sub-chambers

1 mern. This causes heat loss through convection in the

2 Insulation zone hollow chamber is ideally excluded, but at least drastically reduced. The aim pursued by the invention is thus achieved.

t is sufficient to prevent convection as far as possible, since the reduction

5 free cavity cross-sections resting air layers in stationary environments

(-. training conditions are largely maintained.

&kgr; A further advantage of the present invention is that by the series connection of preferably four longitudinal webs 4, 5 - 4, 5 in

&eegr;) Direction of heat radiation 9 the radiation share of the total heat loss

Ii is significantly reduced. This effect is further increased by the fact that

ii according to the invention, the longitudinal webs 4, 5 and the bridge webs 6 with a coating

u surface 10 of low emissivity, which reduces the radiation component at the

µm heat loss is further reduced.

&kgr;. Both of the above-described beneficial effects contribute to an overall

1 - increased thermal insulation effect of aluminum composite profiles provided with hollow profile bodies 3 i» according to the invention.

zn In the following, advantageous embodiments of the present invention are

i\ ung is explained using graphic representations.

2 5 Fig. 1 shows a section of a thermally insulated aluminium

24 composite profile. The aluminum inner shell 7 and the aluminum

25 Outer shell 8 are only partially shown, namely with the profile sections that delimit the insulation zone hollow chamber. The insulation webs 1, 2 are connected to the aluminum profiles 7, 8 by means of a form-2; closure produced by rolling. Hollow profile bodies are integrally attached to the insulation webs 1, 2.

09.12.96

W. Hartmann & Co. (GmbH & Co.), Hamburg _# · _# ·· _&bgr;# * _# ·· _# ."..** Page

which extend into the interior of the insulation zone hollow chamber. In Fig. 1, a hollow chamber profile according to the invention is formed on each of the insulation webs 1, 2. However, it is also conceivable that a hollow chamber profile 3 is formed on only one of the insulation webs 1, 2. The length of the longitudinal webs 4, 5 in the embodiment

4 guide shape according to Fig. 1 is selected so that the perpendicular to the longitudinal webs 4,

5 5 running bridges 6 almost at the opposite

6 insulating webs 1, 2. According to the technical teaching of the present invention, the length of the longitudinal webs 4, 5 should correspond at least to the length of the bridge web 6 connecting them, but this can also - as in

Fig. 1 shown.

&eegr;» Due to the off-center formation of the hollow profile bodies 3 on the insulation

u gen 1, 2 - as described above - the hollow profile bodies 3 come in the

u Insulation zone hollow chamber essentially next to each other to the layer. This leads

u to the result desired according to the invention that the insulation zone hollow

i.i chamber is divided into four sub-chambers. The hollow

i! chambers of the hollow profile body 3 are due to the material closure of the

tu hollow profile body 3 is completely closed with the insulation bars 1, 2. The two

i7 the other sub-chambers 11, 12, which are connected to the aluminium outer shell 8 and

&igr;» the aluminium inner shell 7 borders, are only separated by narrow

iv hollow profile bodies 3 formed channels are connected to each other in a labyrinth-like manner.

au This chamber-forming geometry inside the insulation zone hollow chamber

2i has a beneficial effect on the thermal insulation of composite profiles whose

z: Insulating webs are provided with hollow profile bodies according to the invention.

zx the reduction of free cavity cross-sections leaves resting air layers

24 under stationary environmental conditions. This

2;> heat losses are caused by convection in the insulation zone cavity

2o significantly reduced. By connecting the inventive

&igr;: Hollow profile body in radiation direction 9 from the room side to the weather side

09.12.96

W. Hartmann & Co. (GmbH & Co.), Hamburg · ·· · ·· *· ·· Page

the radiation path in the above-mentioned direction is completely interrupted and the

[ Radiation share of total heat loss significantly reduced.

According to the technical teaching of the invention, it is advantageous if the surface

.1 before the hollow profile body 3 is provided with a coating surface 10, which

&bull; has only low emissivity in order to further reduce radiation losses

decorate.

st Fig. 2 shows a section of a wider aluminium composite profile,

9 wherein the insulation profiles 1, 2 are provided with hollow profile bodies 3, which

&iacgr;&ogr; embodiment according to Fig. 1. In Fig. 2, the inventive

Ii hollow profile body 3 extends into the insulation zone hollow chamber until

\2 the bridge webs 6 are at approximately the same height. Even with this composite

i; profile width, the insulation zone hollow chamber is essentially divided into four parts

u chambers and thus the advantageous effect of the

<s Reduction of heat losses through convection. The radiation

ic, away in direction 9 from the room side to the weather side is due to the arrangement

&igr;: hollow profile body according to the invention interrupted. This and the coating

&igr;*, the hollow profile body surface with a coating area of less

sy Emissivity has a beneficial effect on reducing the radiation component of

20 the heat losses.

v Fig. 3 shows a further advantageous embodiment of the inventive

v. hollow profile body 3. In the embodiment according to Fig. 3, the

24 Bridge webs 6 are not parallel to the insulation webs 1, 2 but take a

25 angular position with respect to the insulating webs 1, 2. The resulting &kgr;, slope is arranged opposite the aluminum inner shell 7 or the aluminum outer shell 8 27.

09.12.96

W. Hartmann & Co. (GmbH & Co.), Hamburg _# ; _# ·· _&phgr;# · _t *» _t .*·.," Page

This embodiment of the hollow profile body 3 according to the invention leads to material

< material savings in production.

The beneficial effects on the thermal insulation of hollow cores made with these

.; composite profiles equipped with profile bodies correspond to the statements made for Fig. 1 and 2.

; Fig. 4 again shows a section of a wider composite profile.

&iacgr; which essentially corresponds to the example in Fig. 2.

u) The design of the hollow profile body 3 in Fig. 4 corresponds to the design

i! form according to Fig. 3. In this installation situation, the ends of each

i: because of the longer longitudinal webs 5 at approximately the same height as the layer.
\i

14 Fig. 5 shows a further advantageous embodiment of the present invention.

15 tion, the illustration being shown on an enlarged scale for clarity. According to this embodiment, the insulating web 1 has two locking lugs 13 which point into the interior of the insulating zone hollow chamber and have two hump-like projections 14 at their free ends pointing towards the aluminum half-shells.

2! The locking lugs 13 serve to anchor a semi-hollow

2j prof ils 15, which has a substantially rectangular cross-section and is

2i is open in the installed position on the side facing the insulating web 1.

&eegr; The surface of the semi-hollow profile 15 can be provided with a

&lgr;, layer surface with low emissivity.

09.12.96

W. Hartmann & Co. (GmbH & Co.), Hamburg · ·. . .. .* .. Page

The free ends of the longitudinal webs 4, 5 facing the insulating web 1 have opposite projections 16 oriented towards the respective opposite longitudinal webs, which form the counterpart to the projections 14 and with them form a clip connection between the insulating web 1 and the semi-hollow profile 15.

The clip connection between the insulating web 1 and the semi-hollow profile 15 according to the present embodiment has essentially the same geometric properties as the one-piece connection of the embodiments according to Fig. 1 and Fig. 2.

Fig. 6 shows a clip connection of insulating webs 1, 2 and semi-hollow profiles 15 in an installation situation in an aluminum composite profile. From Fig. 6 it can be seen that the advantageous effect of the clip connection between insulating webs 1, 2 and semi-hollow profile 15 on the reduction of heat losses due to convection and thermal radiation corresponds to the advantageous effect achieved by the embodiments according to Fig. 1 and Fig. 2.

In particular, in the embodiment according to Fig. 6, the insulation zone hollow chamber is divided into four sub-chambers, which at least greatly reduces the heat loss due to convection for the reasons already explained above.

The radiation path from the room side to the weather side is also completely interrupted by the geometric series connection of the longitudinal webs 4, 5, which, in conjunction with the low-emissivity coating surface 10, significantly reduces the radiation share of the total heat loss.

W. Hartmann & Co. (GmbH & Co.), Hamburg ,J.··. ,*.*· ·· ·· Page

&igr; Fig. 7 shows a section of an aluminium composite profile with larger

2 , whereby insulating webs 1, 2 are shown with clipped-on semi-hollow profiles 15 according to the invention. The semi-hollow profiles 15 thus extend

4 far into the insulation zone cavity so that the bridge webs 6 are approximately at the same

= rather come to a higher level.

- It should be noted that the statements regarding the advantageous

&kgr; Effect on the thermal insulation properties of corresponding composite profiles,

&ogr; which were taken for Fig. 2 and Fig. 4 above, in an analogous manner

&igr;« apply.

&ugr; It goes without saying that the embodiments according to Fig. 3 and

11 Fig. 4 can be realized in the clip connection described above.

ts The versions with clip connection have the great advantage that

io Insulation bars 1, 2 with or without semi-hollow profile 15 can be used.

&igr;- This has a particularly beneficial effect on the system flexibility in the

&iacgr;&bgr; application.

20 Another great advantage of the embodiment according to the invention according to Fig.

is 5 to Fig. 7 it can be seen that the semi-hollow profiles 3 to be clipped on are in a

■ii a different material, preferably a cheaper material, than

■>■·. the insulation bars 1, 2 can be carried out, among other things because the semi-hollow

24 profiles 3 do not have to bear any static load
&idgr;?.

&bull;_& , It is also advantageous that the clipped-on half-hollow profiles 3

z-, can be provided with a coating surface 10, which again

09.12.96

W. Hartmann & Co. (GmbH & Co.), Hamburg ... ... .. .. Page

which has a positive effect on the economic efficiency of the coating process.

List of reference symbols

1 Insulation bar [CN] Insulation bar 3 Hollow chamber profile 4 Longitudinal web 5 Longitudinal web 6 Bridge footbridge 7 Room-side aluminum half-shell &dgr; Weather-side aluminum half shell 9 Radiation direction 10 Coating area 11 Partial chamber weather side 12 Partial chamber room side 13 locking lug 14 head Start 15 Semi-hollow profile 16 Projection Longitudinal web

09.12.96

Claims (5)

W. Hartmann & Co. (GmbH & Co.), Hamburg · ·· ,J .··. .··..·· Page Protection claims 1) Thermally separated aluminum composite profile for windows, doors and facades, wherein the composite profile consists of an aluminum half-shell (7) on the room side and an aluminum half-shell (8) on the weather side, which are separated from each other by at least two insulating webs (1) and (2), so that the aluminum half-shell (7) on the room side and the aluminum half-shell (8) on the weather side are arranged parallel and spaced from each other and a cavity extends in the longitudinal axis of the profile, which is surrounded by the insulating webs (1) and (2) on the one hand and the aluminium half-shells (7) and (8) on the other hand, characterized in that the insulating webs (1) and (2) have at least one hollow profile body pointing into the interior of the insulating zone hollow chamber (3). 2) Composite profile according to claim 1, characterized in that the hollow profile body (3) is integrally formed on the insulating webs (1) and (2). 3) Composite profile according to claim 1 and 2, characterized in that two longitudinal webs (4) and (5), which are integrally formed with the insulating webs (1) and (2), are components of the hollow profile body. 4) Composite profile according to claims 1 to 3, characterized in that a bridge web (6) integrally connects the free ends of the longitudinal webs (4) and (5) to one another. 5) Composite profile according to claims 1 to 4, characterized in that the longitudinal webs (4) and (5) run essentially perpendicular to the insulating webs (1) and (2). W. Hartmann & Co. (GmbH & Co.), Hamburg .· .·\ .J .··, .·*.,** Page 6) Composite profile according to claims 1 to 5, characterized in that the bridge web (6) is arranged substantially parallel to the insulating webs (1) and (2). j is running. ,&igr; 7) Composite profile according to claim 1 to 6, characterized in that the -. Bridge web (6) an angular position with respect to the insulation webs (1) and (2) r. has. s 8) Composite profile according to claim 1 to 7, characterized in that the Longitudinal webs (4) and (5) have a length that almost corresponds to the distance between the &iacgr;&ogr; insulating webs (1) and (2) from each other. i> 9) Composite profile according to claim 1 to 8, characterized in that the !.j Longitudinal webs (4) and (5) have a length which is less than the distance i-s of the insulation bars (1) and (2) from each other. to 10) Composite profile according to claims 1 to 9, characterized in that the &igr;; Hollow profile body (3) has a substantially rectangular cross-section. iv 11) Composite profile according to claim 1 to 10, characterized in that the iü Hollow profile body (3) can have other geometric shapes, such as rough 2! ten-shaped, ellipsoidal or similar. 2 j 12) Composite profile according to claim 1 to 11, characterized in that the 24 hollow profile body (3) provided with an infrared effective coating (10) ?j! is. j: 13) Composite profile according to claim 1 to 12, characterized in that the ?&lgr; Hollow profile body (3) is formed centrally on the insulating webs (1) and (2). 09.12.96 W. Hartmann & Co. (GmbH & Co.), Hamburg .j .··, .; .··, .*'.." Page 1 14) Composite profile according to claim 1 to 13, characterized in that the 2 Hollow profile body (3) is formed off-center to the insulation webs (1) and (2). 4 15) Composite profile according to the preamble of claim 1 and one or more 5 reren of the preceding claims, characterized in that the < insulating webs (1) and (2) are provided with at least one semi-hollow profile (15) are. a 16) Composite profile according to claim 15, characterized in that the &iacgr;&ogr; Insulating bars (1) and (2) each have at least two locking lugs (13). !.. 17) Composite profile according to claim 15 and 16, characterized in that &igr;; the locking lugs (13) point towards the interior of the insulation zone hollow chamber. &igr;, 18) Composite profile according to claim 15 to 17, characterized in that u, projections (14) are formed on the ends of the locking lugs (13). is 19) Composite profile according to claim 15 to 18, characterized in that the iv free ends of the longitudinal webs (18) of the semi-hollow profile (15) projections (16) to have. z: 20) Composite profile according to claim 15 to 19, characterized in that the 2? Longitudinal webs (18) form a clip connection with the locking lugs (13). 09.12.96