Quick-running door

Description

[0001] The invention relates to a high-speed door.

[0002] High-speed doors are used, for example, to close cold storage rooms and feature a retractable, flexible door leaf. A problem arises when closing cold storage rooms: the door leaf can freeze to the floor when closed, preventing it from being opened or risking damage during opening. DE 10 2010 020 693 A1 discloses a retractable door leaf. This retractable door leaf has two outer panels connected at their lower ends by a common lower end piece. At the upper end, each outer panel can be wound onto its own winding shaft. Insulating layers are arranged separately and spaced apart between the two outer panels, with each insulating layer being retractable together with one of the outer panels.Between an insulating layer and the adjacent outer layer, a separate, retractable surface heating element is arranged. This heating element terminates above the lower end of the outer layer and serves to prevent ice formation on the outside of the outer layer. EP 0 816 624 B1 discloses a high-speed door for cold storage facilities with a retractable, flexible door leaf. This high-speed door can be heated by means of warm air directed into the interior of the door leaf. Even with this prior art, the problem remains that the door leaf can freeze to the ground.

[0003] The purpose of the invention is to protect a high-speed door against freezing to the ground in a simple and reliable manner.

[0004] This problem is solved by a high-speed door with the features specified in claim 1. Preferred embodiments are described in the dependent claims, the following description, and the accompanying figures.

[0005] The high-speed door according to the invention has a flexible door leaf which is arranged on or attached to a rotatable shaft. By rotating the shaft, the door leaf can be wound up and unwound. In the unwound state, the door leaf rests against the ground with a bearing area. In this state, the door leaf can close a door opening. When the door leaf is wound up on the shaft, the bearing area of ​​the door leaf is spaced away from the ground, and a door opening is opened. According to the invention, the door leaf has a heating element in the bearing area. That is, according to the invention, freezing is prevented by heating the door leaf. This has significant advantages, as all the necessary door technology, including the heating element, can be integrated into the door leaf and its drive mechanism.Furthermore, the heating unit can be easily connected to the high-speed door's control system, for example, to switch the heating unit on and off and to monitor it. Advantageously, all necessary electrical connections can be integrated into the door leaf and its winding drive. This allows a high-speed door to be supplied as a single unit with a winding mechanism and integrated heating system, which can be mounted on or in a door opening.

[0006] The heating unit is an electric heating unit. Such a heating unit can be flexibly designed and easily integrated into a flexible, retractable gate leaf. Electrical connection cables can also be easily designed so that they can be retracted along with the gate leaf.

[0007] A flexible electric heating mat is particularly preferred as the heating device. Such flexible electric heating mats are known and available on the market. They consist of heating wires that can be embedded in a carrier fabric or attached to a carrier fabric or another type of flexible carrier material. Due to their electrical resistance, these heating wires heat up when an electric current flows through them. Such heating wires could also be applied as a coating to a flexible carrier material. In principle, such an electric heating mat can be designed in any way. It is particularly preferred that it is flexible enough to be wound up together with the gate leaf.

[0008] According to the invention, the heating device, i.e., an electric heating device or heating mat, is arranged inside the gate leaf. In this way, the heating device is protected from damage by the surrounding gate leaf material, thus ensuring permanently reliable operation of the heating device.

[0009] The gate leaf has at least two interconnected layers of material. These layers can be sewn and / or glued together, for example. Between the two layers, at least one heating element, preferably in the form of a heating mat, is embedded. The heating mat can be sewn in and / or glued between the two layers. The heating element thus warms the gate leaf from the inside out, ensuring a temperature above freezing on the outer surface in the contact area, thereby preventing the gate leaf from freezing to the ground. In a particularly preferred embodiment, the gate leaf can have at least one layer of felt, and more preferably two layers of felt. The felt is particularly preferably wool felt.Felt has good insulating properties and, due to its flexibility, can easily be wound onto the shaft to open the high-speed door.

[0010] Preferably, the gate leaf has two layers of felt, between which at least one heating element is arranged. For example, an electric heating mat can extend across the surface between the two felt layers and be connected to them, for example, by sewing and / or gluing.

[0011] At least one electrical connection of the at least one heating device, which is arranged on or in the door leaf, extends to the top of the door leaf. Preferably, all necessary electrical connections extend to the top of the door leaf so that the electrical connections can be permanently connected there to an electrical supply unit and / or control unit. This eliminates the need for electrical contacts in the bearing area or frame of the high-speed door. In this way, a permanently reliable electrical connection can be established.

[0012] In another possible embodiment of the invention, the at least one heating device is designed as an electric heating mat extending from the bearing area to an upper end of the gate leaf, with an electrical connection of the heating mat preferably located at the upper end. That is, in this embodiment, not only the bearing area of ​​the gate leaf is heated, but the entire gate leaf from the bearing area to its upper end. This arrangement of the heating mat has the advantage that the electric heating mat can be connected directly to the upper end of the gate leaf, so that the electrical connection does not have to be made inside the gate leaf. Furthermore, the heating device can thus be made longer to ensure that the bearing area is always heated, even with different gate heights.Even with different lengths of unrolled gate leaf used to close the gate opening, it is always ensured that the area which forms the bearing surface at the respective gate height is heated by the heating device.

[0013] In a further preferred embodiment of the invention, the gate leaf can be designed as a double gate leaf, comprising two parallel and spaced-apart flexible gate leaf sections. These are connected to each other at their lower ends in the bearing area. Preferably, the two gate leaf sections are connected to each other in an arc-shaped deflection, i.e., they have a U-shaped cross-section, with the bearing area located in the region of the apex. Due to its two gate leaf sections, such a double gate leaf offers improved insulation and can also be rolled up very quickly and easily.

[0014] In a double-leaf door configuration, at least one heating element is preferably arranged at least in the area of ​​the deflection, which forms the bearing surface. More preferably, the heating element can be designed as an electric heating mat that extends at least over one of the two door leaf sections and over the deflection. This means that this first door leaf section is heated completely, and the deflection area can also be heated, while the remaining part of the second door leaf section is preferably designed without a heating element. In the case of a cold storage door, the first door leaf section is more preferably the one facing the inside of the cold storage room.

[0015] Furthermore, in the double gate, the first of the two gate leaf sections is preferably fixed at its upper end, while the second gate leaf section is connected to the rotatable shaft at its upper end. The first gate leaf section preferably rests against the outside of a gate frame and is thus pulled away from the frame when the gate is wound up. Heating the entire first gate leaf section also easily prevents it from freezing to the gate frame. Furthermore, the electrical connection can be easily and permanently integrated into the upper gate leaf section, as no electrical connection for the heating element is required in the shaft.

[0016] According to a further preferred embodiment, the door leaf is provided with a vapor-diffusion-tight layer on at least one of its surfaces. This is preferably the outer side of the door leaf facing away from a cold storage room. In the case of a double door leaf, as described above, preferably at least the entire outer surface, i.e., the outer surfaces of the two door leaf parts facing away from each other, can be coated with a vapor-tight layer. This prevents condensation from penetrating the door leaf material.

[0017] The invention is described below by way of example with reference to the accompanying figures. These show: Figure 1 is a schematic sectional view of a high-speed door according to the invention, Figure 2 is a schematic top view of the high-speed door according to the invention. Figure 1 , and Figure 3 a schematic sectional view of a gate leaf section with an embedded heating device.

[0018] The high-speed door shown in this embodiment has a door leaf 2 in the form of a double door leaf. This double door leaf has two door leaf sections, a first door leaf section 4 and a second door leaf section 6, which are connected to each other at their lower end in the area of ​​a deflection 8. The door leaf 2 is formed in one piece, i.e., the first door leaf section 4 and the second door leaf section 6 with the deflection 8 are manufactured as a continuous flexible curtain. In the area of ​​the deflection 8, a weight, for example in the form of a tube 10, can be located between the door leaf sections 4 and 6.

[0019] The first gate leaf section 4, when closed, rests with its side areas against a gate frame 12. Furthermore, the upper end 14 of the first gate leaf section 4 is fixed to the gate frame 12, for example, to a crossbeam 16 of the gate frame. The second gate leaf section 6 is wound at its upper end onto a rotatable shaft 18. The rotatable shaft 18 can be rotated in two directions by means of a drive 20, for example, an electric motor, so that the gate leaf 2 can be wound up and unwound. Figures 1 and 2 The figures show the unfolded state in which the gate leaf 2 closes the opening between the gate frame 12. In this state, the deflection 8 rests on the floor 22 as a contact or support area.

[0020] A heating mat 24 is integrated into the first gate leaf section 4 and the deflection area 8. This heating mat has at least one heating wire 26 that extends in a meandering pattern over the first gate leaf section 4 and the deflection area 8. At its upper end, the heating mat 24 extends to the upper end 14 of the first gate leaf section 4 and has electrical connections 28 there, which can be connected to a power supply and / or a control device for operating the heating mat 24. That is, the electrical connections 28 are located at the fixed upper end 14 of the gate leaf 2 and therefore do not need to be electrically contacted in the area where it is wound onto the shaft 18. The heating mat 24 is designed to be flexible enough to be deflected in the area of ​​the deflection area 8 and wound up along with the shaft.

[0021] Heating the first gate leaf section 4 and the deflection 8 prevents the gate leaf 2 from freezing to the gate frame 12 and / or the floor 22. Floor heating in the area of ​​the floor 22 below the bearing area formed by the deflection 8 is not required.

[0022] Figure 3Figure 1 shows a schematic sectional view illustrating the structure of the first gate leaf section 4. The first gate leaf section 4 consists of two interconnected layers of felt 30 and 32. These layers can be sewn and / or glued together, for example. The heating mat 24, containing the heating wire 26 or wires 26, is embedded between the felt layers 30 and 32. The heating wires 26 are attached to a carrier fabric or material 34, which lies flat between the felt layers 30 and 32 and is connected to them, for example, by sewing or gluing. A diffusion-tight coating 36 is applied to the outer surface of the outer felt layer 30. This diffusion-tight coating 36 preferably extends over the outer surface of the second gate leaf section 6. Furthermore, such a coating could also be applied to the inner surface, i.e., the facing sides of the two gate leaf sections 4 and 6. Reference symbol list

[0023] 2 Gate leaf 4 First gate leaf section 6 Second gate leaf section 8 Deflection 10 Tube 12 Gate frame 14 Upper end 16 Crossbeam 18 Rotating shaft 20 Drive 22 Floor 24 Heating mat 26 Heating wire 28 Electrical connections 30, 32 Felt layers 34 Carrier material 36 Diffusion-tight coating

Claims

1. A high-speed door with a flexible door leaf (2) and at least one rotatable shaft, which is designed for winding up and unwinding the door leaf (2) in such a way that, in an unwound state, the door leaf (2) abuts against a support region on the base (22) and, in the wound-up state, the support region is spaced apart from the base (22), characterised in that< / b> the door leaf (2) comprises at least one electric heating device (24) arranged in the support region, and in that the door leaf (2) comprises at least two material layers (30, 32) connected to one another, between which the at least one heating device (24) is embedded.

2. The high-speed door according to claim 1, characterised in that the at least one heating device is a flexible electric heating mat (24).

3. The high-speed door according to claim 1 or 2, characterised in that the door leaf (2) comprises at least one material layer consisting of felt and preferably two material layers (30, 32) consisting of felt.

4. The high-speed door according to any one of the preceding claims, characterised in that the door leaf (2) comprises two material layers (30, 32) consisting of felt, between which the at least one heating device (24) is arranged.

5. The high-speed door according to any one of the preceding claims, characterised in that at least one electrical connection (28) of the at least one heating device (24) is passed on or in the door leaf (2) up to an upper end (14) of the door leaf (2).

6. The high-speed door according to any one of the preceding claims, characterised in that the at least one heating device is an electric heating mat (24), which extends from the support region to an upper end (14) of the door leaf (2), wherein an electrical connection (28) of the heating mat (24) is preferably located at the upper end (14).

7. The high-speed door according to any one of the preceding claims, characterised in that the door leaf (2) is designed as a double door leaf with two door leaf parts (4, 6) extending in parallel and spaced apart from one another, which are connected to one another at their lower ends in the support region and are preferably connected in an arcuate deflection (8).

8. The high-speed door according to claim 7, characterised in that the at least one heating device (24) is arranged at least in the region of the deflection (8).

9. The high-speed door according to claim 7 or 8, characterised in that the at least one heating device, preferably in the form of an electric heating mat (24), extends at least over a first of the two door leaf parts (4, 6) and the deflection (8).

10. The high-speed door according to any one of claims 7 to 9, characterised in that a first of the two door leaf parts (4, 6) is fixed at its upper end (14) and a second of the two door leaf parts (4, 6) is connected at its upper end (14) to the rotatable shaft (18).

11. The high-speed door according to claim 10, characterised in that an electrical connection (28) of the at least one heating device (24) is located in the region of the upper end (14) of the first door leaf part (4).

12. The high-speed door according to any one of the preceding claims, characterised in that the door leaf (2) is provided with a vapour diffusion-tight layer (36) on at least one surface.

Images