Connector for connecting hollow profiles

Abstract

The invention relates to a connector (1) for connecting hollow profiles, in particular for facades, roofs, windows or doors, wherein the connector (1) has at least one connecting element (2) made of metal and at least one cooling element (3) made of a heat-binding material, wherein the at least one cooling element (3) is arranged directly adjacent to a side surface of the connecting element (2), and wherein the at least one cooling element (3) is connected to the connecting element (2) via at least one outer side surface of the connecting element (2), in particular is connected in a form-fitting and / or force-fitting manner. According to the invention, it is provided in particular that the cooling element (3) has at least one material formation which interacts in a form-fitting and / or force-fitting manner with at least one material formation of the connecting element (2) which is at least partially and / or regionally complementary to the material formation of the cooling element (3).

Description

[0001] The present invention relates generally to profile arrangements, in particular facades or skylights, in fire protection design.

[0002] A profile assembly of this type is used, for example, in facade or window systems, preferably to connect two profiles "butt-to-butt." This involves a so-called butt connector, which is attached to the first profile and inserted into a cavity in the second profile, where it is secured.

[0003] The butt connector is initially connected to the first profile by means of a positive connection, for example, through a combination of a T-shaped profile of the butt connector and a C-shaped groove of the first profile. Essentially, the butt connector can initially be moved within the groove but cannot be pulled out. Finally, the butt connector is fixed in position, usually using a so-called punch screw. The punch screw has a screw head, a threaded portion, and a punch pin. The punch pin is cylindrical and has a smaller diameter, typically a significantly smaller diameter, than the threaded portion.

[0004] To connect two mitered hollow profiles, it is known from facade construction to use a single- or multi-part corner connector. For example, such a corner connector is known from document EP 2 154 323 A2. It can be used to connect two mitered hollow profiles. The corner connector is inserted into the hollow profiles. An adhesive is applied between the corner connector and the hollow profiles to ensure a reliable connection.

[0005] In order for a profile arrangement, and in particular a facade or window arrangement, to meet fire protection requirements, measures must be provided to reduce the outbreak or spread of fire. Weak points within a facade system, for example in a curtain wall, are undivided mullions and transoms in the area of ceilings or partition walls, their connections to the building structure, and in particular corner or butt connectors that serve to connect two hollow profiles. In the event of a fire, deformation due to the high temperatures in these areas must be structurally compensated. To reduce heat spread, materials that foam and seal when heated, or evaporative materials that reduce heat spread, can be used.

[0006] However, the use of such materials in the area of a butt or corner connector is problematic, as the design limits the available space in this area. The integration of such heat-reducing materials in a corner or butt connector inevitably requires a smaller corner or butt connector, which ultimately has a detrimental effect on the achievable load-bearing capacity of the window or facade construction.

[0007] Based on this problem, the invention is based on the object of specifying a connector for connecting hollow profiles, in particular for facades, roofs, windows or doors, wherein the connector is designed in a fire-protection design, whereby the achievable load-bearing capacity of the connector is nevertheless not reduced.

[0008] This object is achieved according to the invention by the subject matter of independent patent claim 1.

[0009] Accordingly, the invention relates in particular to a connector for connecting hollow profiles, in particular for facades, roofs, windows or doors, wherein the connector has at least one connecting element made of metal, in particular light metal such as aluminum, and at least one cooling element made of a heat-binding material.

[0010] In this regard, it is provided in particular that the at least one cooling element is arranged directly adjacent to a side surface, in particular an inner and / or outer side surface, of the connecting element.

[0011] In particular, it is provided in this context that the at least one cooling element is arranged in a gap between, in particular, the outer side surface of the connecting element and an inner side surface of one of the hollow profiles to be connected to the connector.

[0012] In this context, it is conceivable that the at least one cooling element is inserted into the gap between the outer side surface of the connecting element and the inner side surface of the hollow profile, in particular after the connecting element has been connected to the hollow profile.

[0013] Alternatively, it is also conceivable that the at least one cooling element is connected to the connecting element via at least one outer side surface of the connecting element, in particular is connected in a form-fitting and / or force-fitting manner.

[0014] The at least one cooling element can, for example, be connected to the connecting element via at least one outer side surface of the connecting element, in particular connected in a form-fitting and / or force-fitting manner.

[0015] The advantages achievable with the invention are obvious: Because the connector has a connecting element made particularly of aluminum, an increased load-bearing capacity of the connecting area of the hollow profiles can be achieved while reducing the weight of the connector. Since the melting point of the material of the connecting element is lower than the temperature expected to affect the hollow profiles in the event of a fire, a cooling element connected externally to the connecting element is provided to prevent the connecting element from melting. This cooling element can effectively prevent failure of the connector in the event of a fire for a specified safety period.

[0016] Because the cooling element is arranged on at least one outer side surface of the connecting element or is connected to the connecting element in a form-fitting and / or force-fitting manner, the actual connecting element is structurally unchanged and the necessary load-bearing capacity of the connecting area can be maintained with the connecting element.

[0017] Various designs are possible for the cooling element. For example, it is conceivable that the cooling element is designed as a plate that at least partially or partially covers the outer surface of the connecting element, or a similar shaped body made of a heat-binding, hydrophilic adsorber with a high water content.

[0018] According to preferred embodiments of the inventive solution, the cooling element consists of a molded body made of a heat-binding, hydrophilic adsorber with a high water content, preferably containing alum and gypsum. Alum is a so-called metal double salt, which is capable of storing a very high degree of water of crystallization relative to its weight.

[0019] It has proven advantageous to use potassium alum, chemically known as potassium aluminum sulfate 12-hydrate. This potassium alum is capable of physically binding approximately 45% water of crystallization per unit weight. The release of the water of crystallization from the potassium alum in pure form occurs at 73°C. Due to the density of the alum of 1.1 g / cm³, the volume-related proportion of the stored water of crystallization is approximately 50%.

[0020] In this context, it is conceivable, for example, that the potassium alum is embedded in a gypsum matrix and behaves completely neutrally with respect to the curing of the gypsum, so that the molded parts produced from it possess sufficient stability for their use in fire protection. In particular, such molded parts can be easily arranged or connected, preferably with a form-fitting and / or force-fitting connection, to at least one outer surface of the connecting element to be protected.

[0021] The molded parts serving as coolants, which are provided with a hydrophilic adsorber, preferably consist of 50% modified gypsum and 50% potassium alum. Since both gypsum and alum have a density of 1.1 g / cm³, this ratio is based on weight and volume. The energy consumption of such a molded part serving as a coolant is approximately 1,100 J / cm³. Although potassium alum on its own has an effective temperature of 73°C, the effective temperature in combination with the gypsum is shifted to a higher value, namely approximately 85°C. This results from the fact that the water released in the alum is kept at a temperature of 85°C by simply being absorbed by the gypsum before being transferred to the vapor phase. A favorable effective temperature occurs here, which is sufficiently far from the operating temperatures, which can reach 70°C in direct sunlight.

[0022] The combination of gypsum and alum has the further advantage that the crystal water bound in the gypsum is only released at an effective temperature of 125°C. This multi-stage release of crystal water has a positive effect on the cooling process of the connecting element, which is equipped with the corresponding cooling element. Furthermore, at approximately 215°C, a further small release of water bound in the gypsum occurs, but this is of minor importance.

[0023] Of course, the present invention is not limited to coolants consisting of potassium alum in a gypsum matrix. Other possible water-based coolants are commercially available, for example, under the names Palstop Pax H, Roku V2, Roku V3, Roku ENEX, Kerafix 2002002 or Roku Coolfix 1000, Promaxon Type A, and Promatect L.

[0024] Advantageously, the cooling element has at least one material formation that interacts positively and / or non-positively with at least one material formation of the connecting element that is at least partially and / or regionally complementary to the material formation of the cooling element. In one conceivable implementation of this embodiment, the cooling element can be clipped into at least one groove of the connecting element.

[0025] In particular, it is conceivable that the cooling element is designed as a shaped body, for example in the form of a plate, which covers at least one outer side surface of the connecting element at least partially or in regions.

[0026] The connector can, for example, be designed as a butt connector for the angular connection of hollow profiles, each comprising a connecting profile and a plug-in profile. In this context, it is conceivable that the connecting element of the connector designed as a butt connector is or can be fastened to the connecting profile, in particular by means of pins or screws. When the plug-in profile is attached, the connecting element with the at least one cooling element is accommodated in the plug-in profile designed as a hollow profile.

[0027] Alternatively, it is also conceivable for the connector to be designed as a corner connector for connecting two mitered hollow profiles. The connecting element can have two sections that adjoin each other in a corner area, with the corner area being located in the area of the miter joint when connecting the hollow profiles.

[0028] In particular when the connector is designed as a corner connector, it is advisable for the at least one cooling element to cover at least partially and / or regionally and preferably completely a particularly common outer side surface of the two sections of the connecting element.

[0029] The invention further relates to an arrangement comprising a connecting profile designed as a hollow profile, a plug-on profile designed as a hollow profile and a connector designed as a butt connector of the aforementioned type according to the invention, wherein the connecting profile and the plug-on profile are connected to one another using the butt connector.

[0030] In the arrangement according to the invention, it is preferably provided that the connecting profile is designed as the inner shell of a thermally separated profile arrangement, in which the connecting profile is connected to a hollow profile designed as an outer shell via insulating webs. The at least one coolant should preferably be arranged on an outer surface of the butt connector facing away from the hollow profile designed as an outer shell.

[0031] The invention further relates to an arrangement comprising two mitred hollow profiles and a connector designed as a corner connector of the aforementioned type according to the invention, wherein the two mitred hollow profiles are connected to one another using the corner connector accommodated within the hollow profiles.

[0032] In this embodiment, it is also advantageous that the two mitered hollow profiles are each designed as the inner shell of a thermally separated profile arrangement, in which the hollow profile designed as the inner shell is connected to a hollow profile designed as the outer shell via insulating webs. Preferably, the at least one cooling element is arranged on an outer surface of the corner connector facing away from the hollow profile designed as the outer shell.

[0033] Embodiments of the connector according to the invention are described in more detail below with reference to the accompanying drawings.

[0034] They show: FIG. 1A schematically and in a plan view a first exemplary embodiment of the connector according to the invention, which is designed as a butt connector; FIG. 1B schematically and in a sectional view the exemplary embodiment of the connector according to the invention according to FIG. 1A; FIG. 2A schematically and in a plan view a second exemplary embodiment of the connector according to the invention, which is designed as a butt connector; FIG. 2B schematically and in a sectional view the exemplary embodiment of the connector according to the invention according to FIG. 2A ; FIG. 3A schematically and in a plan view a third exemplary embodiment of the connector according to the invention, which is designed as a butt connector; FIG. 3B schematically and in a sectional view the exemplary embodiment of the connector according to the invention according to FIG. 3A ; FIG. 4A schematically and in a plan view a fourth exemplary embodiment of the connector according to the invention, which is designed as a corner connector; FIG. 4B schematically and in a cross-sectional view the exemplary embodiment of the connector according to the invention according to FIG. 4A; FIG. 5A schematically and in a plan view a fifth exemplary embodiment of the connector according to the invention; FIG. 5B schematically and in a cross-sectional view the exemplary embodiment of the connector according to the invention according to FIG. 5A ; FIG. 6A schematically and in a plan view a sixth exemplary embodiment of the connector according to the invention, which is designed as a corner connector; and FIG. 6B schematically and in a cross-sectional view the exemplary embodiment of the connector according to the invention according to FIG. 6A .

[0035] First, with reference to the illustrations in FIG. 1 to FIG. 3 a first exemplary design variant of a profile arrangement in fire protection design is described.

[0036] The profile arrangement essentially comprises a first profile, which is designed as a connecting profile 4, and a second profile, which is designed as a clip-on profile. The connecting profile 4 is designed as the inner shell of a thermally separated profile arrangement, in which the connecting profile 4 is connected to a profile designed as an outer shell via insulating webs.

[0037] The clip-on profile is also designed as the inner shell of a thermally separated profile arrangement, in which the clip-on profile is connected to a profile designed as an outer shell via insulating webs.

[0038] The profiles are preferably elongated profiles, in particular hollow profiles, preferably made of aluminum. The plug-on profile is preferably perpendicular to the connecting profile 4 and has at least one hollow profile section or hollow chamber.

[0039] The FIG. 1 to FIG. 3The arrangement shown further comprises a butt connector 1 arranged between the connecting profile 4 and the plug-on profile.

[0040] The butt connector 1 is a molded part that is attached to the connecting profile 4. The butt connector 1 can be inserted into the hollow chamber of the clip-on profile 5 and attached to the clip-on profile. Typically, the butt connector 1 is a machined, extruded connecting element made of aluminum, for example, with a substantially rectangular cross-section.

[0041] As in FIG. 1 to FIG. 3 As shown, the butt connector 1 further comprises a coolant 3 made of a heat-binding material. The coolant 3 is connected to the connecting element 2 via an outer and / or inner surface of a connecting element 2 of the butt connector 1, in particular in a form-fitting and / or force-fitting manner.

[0042] For example, the cooling element can be clipped into at least one groove of the connecting element 2.

[0043] In detail, FIG. 1A , B to FIG. 3A , B embodiments of the connector 1 according to the invention are shown, wherein in these embodiments the connector 1 is designed as a butt connector 1 for the angular connection of hollow profiles each comprising a connecting profile 4 and a plug-on profile.

[0044] As can be seen in particular from the cross-sectional views according to FIG. 1B , FIG. 2B and FIG. 3BAs can be seen, the exemplary embodiment of the connector designed as a butt connector 1 is characterized in that the connector 1 has a connecting element 2 made of metal, in particular a light metal such as aluminum, and at least one cooling element 3 made of a heat-binding material. It is provided that the at least one cooling element 3 is connected to the connecting element 2 via at least one outer and / or inner surface of the connecting element 2, in particular in a form-fitting and / or force-fitting manner.

[0045] In the FIG. 1 to FIG. 3 In the exemplary embodiments of the connector 1 according to the invention shown, it is provided that the cooling element 3 is designed as a shaped body, in particular in the form of a plate, which covers at least one outer surface of the connecting element 2 at least partially or in regions.

[0046] The heat-binding material of the cooling element is, in particular, a heat-binding, hydrophilic adsorbent material with a high water content. It is advisable for the heat-binding, hydrophilic adsorbent material to comprise alum, preferably potassium alum, which can be embedded in a gypsum matrix.

[0047] As is particularly evident in the cross-sectional views in FIG. 1B , FIG. 2B and FIG. 3B can be removed, the connector designed there as a butt connector 1 is provided with the already mentioned connecting element 2, wherein the connecting element 2 is fastened to the connecting profile 4 by means of pins or screws 6. When the plug-on profile is attached, the connecting element 2 with the at least one cooling element 3 is received in the plug-on profile designed as a hollow profile.

[0048] At the FIG. 1A and FIG. 1BIn the embodiment of the connector 1 according to the invention shown, it is particularly provided that the at least one cooling element 3 at least partially and / or regionally and preferably completely covers a particularly common outer side surface of the two sections of the connecting element 2. However, the present invention is not limited to this embodiment.

[0049] As is the case, for example, in FIG. 2A and FIG. 2B As indicated, it is also conceivable that the at least one cooling element 3 covers an inner surface of the connecting element 2.

[0050] It is also - as in FIG. 3A and FIG. 3B indicated - it is fundamentally conceivable to provide a corresponding cooling element 3 on both the outer surface and the inner surface of the connecting element 2.

[0051] In FIG. 4 to FIG. 6Another design variant of the profile arrangement in fire protection design is shown schematically and in an isometric exploded view.

[0052] In this design variant, two frame profiles are used that meet in a miter cut surface and are placed on and connected to a corner angle designed as connector 1.

[0053] Also in the FIG. 4 to FIG. 6 In the embodiment shown, the two mitred hollow profiles are each designed as the inner shell of a thermally separated profile arrangement, in which the hollow profile designed as the inner shell is connected via insulating webs to a profile designed as the outer shell, in particular a hollow profile.

[0054] The connector 1 designed as a corner connector is again provided with a cooling element 3, which is connected to the connecting element 2 via an outer and / or inner surface of the connecting element 2, in particular in a form-fitting and / or force-fitting manner.

[0055] In detail, FIG. 4A , B, FIG. 5A , B and FIG. 6A , B shows an alternative embodiment of the connector 1 according to the invention for connecting hollow profiles, in particular for facades, roofs, windows, or doors. In this embodiment, however, the connector 1 is not designed as a butt connector, but as a corner connector for connecting two mitred hollow profiles.

[0056] The connector 1 has a connecting element 2 made of metal, in particular light metal such as aluminum, wherein the connecting element 2 has two sections which adjoin one another in a corner region, and wherein the corner region is arranged in the region of the miter joint when connecting the hollow profiles.

[0057] As with the previous one with reference to the illustrations in FIG. 1 to FIG. 3 The variant of the connector 1 designed as a butt connector 1 shown in FIG. 4 to FIG. 6 In the embodiment shown of the connector 1 designed as a corner connector, it is provided that the connecting element 2 of the corner connector, which is made in particular of aluminum, is additionally provided with at least one cooling element 3.

[0058] At the FIG. 4A , B, the cooling element 3 is arranged on an outer surface of a section of the connecting element 2, while in the embodiment shown in FIG. 5A, B, the cooling element 3 is arranged on an inner side surface of a section of the connecting element 2.

[0059] At the FIG. 6A , B, corresponding cooling elements are arranged both on the outer surface and on the inner surface of the connecting element 2.

[0060] Some aspects of the present disclosure are summarized below: Aspect 1:Connector (1) for connecting hollow profiles, in particular for facades, roofs, windows or doors, wherein the connector (1) has at least one connecting element (2) made of metal, in particular light metal such as aluminum, and at least one cooling element (3) made of a heat-binding material, wherein the at least one cooling element (3) is arranged directly adjacent to a side surface of the connecting element (2), in particular an outer and / or inner side surface of the connecting element (2). Aspect 2: Connector (1) according to aspect 1, wherein the at least one cooling element (3) is arranged in a gap between the outer side surface of the connecting element (2) and an inner side surface of one of the hollow profiles to be connected to the connector (1). Aspect 3:Connector (1) according to aspect 2, wherein the at least one cooling element (3) is inserted into the gap between the outer side surface of the connecting element (2) and the inner side surface of the hollow profile, in particular after the connecting element (2) has been connected to the hollow profile. Aspect 4: Connector (1) according to aspect 1 or 2, wherein the at least one cooling element (3) is connected to the connecting element (2) via at least one outer side surface of the connecting element (2), in particular is connected in a form-fitting and / or force-fitting manner. Aspect 5: Connector (1) according to aspect 4, wherein the cooling element (3) has at least one material formation that interacts in a form-fitting and / or force-fitting manner with at least one material formation of the connecting element (2) that is at least partially and / or regionally complementary to the material formation of the cooling element (3); and / or wherein the cooling element (3) is clipped into at least one groove of the connecting element (2). Aspect 6: Connector (1) according to one of aspects 1 to 5, wherein the cooling element (3) is designed as a shaped body, in particular in the form of a plate, which covers at least one outer side surface of the connecting element (2) at least partially or in regions. Aspect 7: Connector (1) according to one of aspects 1 to 6, wherein the heat-binding material of the cooling element (3) is a heat-binding, hydrophilic adsorber material with a high water content. Aspect 8: Connector (1) according to aspect 7, wherein the heat-binding, hydrophilic adsorber material comprises alum and preferably potassium alum, which is in particular incorporated into a gypsum matrix. Aspect 9:Connector (1) according to one of aspects 1 to 8, wherein the connector (1) is designed as a butt connector for the angular connection of hollow profiles each comprising a connecting profile (4) and a plug-on profile, wherein the connecting element (2) is fastened or can be fastened to the connecting profile (4), in particular by means of pins or screws (6), and wherein, when the plug-on profile is attached, the connecting element (2) with the at least one cooling element (3) is received in the plug-on profile designed as a hollow profile. Aspect 10: Connector (1) according to one of aspects 1 to 8, wherein the connector (1) is designed as a corner connector for connecting two mitred hollow profiles, wherein the connecting element (2) has two sections which adjoin one another in a corner region, wherein the corner region is arranged in the region of the miter joint when connecting the hollow profiles. Aspect 11:Connector (1) according to aspect 10, wherein the at least one cooling element (3) covers at least partially and / or regionally and preferably completely a particularly common outer side surface of the two sections of the connecting element (2). Aspect 12: Arrangement comprising a connecting profile (4) designed as a hollow profile, a plug-on profile designed as a hollow profile and a connector (1) designed as a butt connector according to aspect 9, wherein the connecting profile (4) and the plug-on profile are connected to one another using the butt connector. Aspect 13:Arrangement according to aspect 12, wherein the connecting profile (4) is designed as an inner shell of a heat-separated profile arrangement, in which the connecting profile (4) is connected via insulating webs to a hollow profile designed as an outer shell, wherein the at least one coolant is preferably arranged on an outer side surface of the butt connector facing away from the hollow profile designed as an outer shell. Aspect 14: Arrangement comprising two mitred hollow profiles and a connector (1) designed as a corner connector according to aspect 10 or 11, wherein the two mitred hollow profiles are connected to one another using the corner connector accommodated within the hollow profiles. Aspect 15:Arrangement according to aspect 14, wherein the two mitred hollow profiles are each designed as an inner shell of a heat-separated profile arrangement, in which the hollow profile designed as an inner shell is connected via insulating webs to a hollow profile designed as an outer shell, wherein the at least one cooling element (3) is preferably arranged on an outer side surface of the corner connector facing away from the hollow profile designed as an outer shell.

[0061] The invention is not limited to the embodiments shown in the drawings, but results from a combination of all features disclosed herein. List of reference symbols

[0062] 1Connector 2Connecting element 3Cooling element 4Connecting profile 6Pin / screw

Claims

1. Connector (1) for connecting hollow profiles, in particular for facades, roofs, windows or doors, wherein the connector (1) has at least one connecting element (2) made of metal, in particular light metal such as aluminum, and at least one cooling element (3) made of a heat-binding material, wherein the at least one cooling element (3) is arranged directly adjacent to a side surface of the connecting element (2), in particular an outer and / or inner side surface of the connecting element (2), wherein the at least one cooling element (3) is connected to the connecting element (2) via at least one outer side surface of the connecting element (2), in particular connected in a form-fitting and / or force-fitting manner, characterized by thatthe cooling element (3) has at least one material formation which interacts in a form-fitting and / or force-fitting manner with at least one material formation of the connecting element (2) which is at least partially and / or regionally complementary to the material formation of the cooling element (3); and / or that the cooling element (3) is clipped into at least one groove of the connecting element (2).

2. Connector (1) according to claim 1, wherein the at least one cooling element (3) is arranged in a gap between the outer side surface of the connecting element (2) and an inner side surface of one of the hollow profiles to be connected to the connector (1).

3. Connector (1) according to claim 2, wherein the at least one cooling element (3) is inserted into the gap between the outer side surface of the connecting element (2) and the inner side surface of the hollow profile, in particular after the connecting element (2) has been connected to the hollow profile.

4. Connector (1) according to one of claims 1 to 3, wherein the cooling element (3) is designed as a shaped body, in particular in the form of a plate, covering at least one outer side surface of the connecting element (2) at least partially or in regions.

5. Connector (1) according to one of claims 1 to 4, wherein the heat-binding material of the cooling element (3) is a heat-binding, hydrophilic adsorber material with a high water content.

6. Connector (1) according to claim 5, wherein the heat-binding, hydrophilic adsorber material comprises alum and preferably potassium alum, which is in particular incorporated into a gypsum matrix.

7. Connector (1) according to one of claims 1 to 6, wherein the connector (1) is designed as a butt connector for the angular connection of hollow profiles each comprising a connecting profile (4) and a plug-on profile, wherein the connecting element (2) is fastened or can be fastened to the connecting profile (4) in particular by means of pins or screws (6), and wherein when the plug-on profile is attached, the connecting element (2) with the at least one cooling element (3) is received in the plug-on profile designed as a hollow profile.

8. Connector (1) according to one of claims 1 to 6, wherein the connector (1) is designed as a corner connector for connecting two mitred hollow profiles, wherein the connecting element (2) has two sections which adjoin one another in a corner region, wherein the corner region is arranged in the region of the miter joint when connecting the hollow profiles.

9. Connector (1) according to claim 8, wherein the at least one cooling element (3) covers at least partially and / or regionally and preferably completely a particularly common outer side surface of the two sections of the connecting element (2).

10. Arrangement comprising a connecting profile (4) designed as a hollow profile, a plug-on profile designed as a hollow profile and a connector (1) designed as a butt connector according to claim 7, wherein the connecting profile (4) and the plug-on profile are connected to one another using the butt connector.

11. Arrangement according to claim 10, wherein the connecting profile (4) is designed as an inner shell of a heat-separated profile arrangement, in which the connecting profile (4) is connected via insulating webs to a hollow profile designed as an outer shell, wherein the at least one coolant is preferably arranged on an outer side surface of the butt connector facing away from the hollow profile designed as an outer shell.

12. An arrangement comprising two mitred hollow profiles and a connector (1) designed as a corner connector according to claim 8 or 9, wherein the two mitred hollow profiles are connected to one another using the corner connector accommodated within the hollow profiles.

13. Arrangement according to claim 12, wherein the two mitred hollow profiles are each designed as an inner shell of a heat-separated profile arrangement, in which the hollow profile designed as an inner shell is connected via insulating webs to a hollow profile designed as an outer shell, wherein the at least one cooling element (3) is preferably arranged on an outer side surface of the corner connector facing away from the hollow profile designed as an outer shell.

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