High-speed door

Abstract

The invention relates to a high-speed door having a flexible door leaf (2) and at least one rotatable shaft which is designed for winding and unwinding the door leaf in such a way that, in an unwound state, the door leaf (2) bears with a bearing region against the ground (22) and, in the wound state, the bearing region is spaced apart from the ground (22), wherein the door leaf (2) has at least one heating device (24) located in the bearing region.

Description

[0001] High-speed door

[0002] Description

[0003]

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

[0004]

[0002] High-speed doors are used, for example, to close cold storage rooms and have a rollable, flexible door leaf. When closing cold storage rooms, the problem is that the door leaf can freeze to the floor when closed, so that it can no longer be opened afterwards, or there is a risk that it will be damaged when opened.

[0005]

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

[0006]

[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.

[0007]

[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 on 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 raised off 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, since 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.

[0008]

[0006] Preferably, the heating device is an electric heating device. Such a heating device can be designed flexibly 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.

[0009]

[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 which 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, such 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] In a possible embodiment of the invention, the heating device, particularly preferably 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, ensuring permanently reliable operation of the heating device.

[0010]

[0009] The gate leaf can, for example, have at least two interconnected layers of material. The layers of material can, for example, be sewn and / or glued together. At least one heating mat can be embedded between the two layers of material. The heating mat can be sewn in and / or glued between the two layers of material. The heating device can thus heat the gate leaf from the inside out, ensuring a temperature above freezing on the outside in the area of ​​contact, 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 material made of felt, and more preferably two layers of material made of felt. The felt can particularly preferably be 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.

[0011]

[0010] Particularly preferably, the gate leaf has two layers of material made of felt, between which at least one heating device 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.

[0012]

[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 upper end of the door leaf. Preferably, all necessary electrical connections extend to an upper end of the door leaf so that the electrical connections can be permanently connected there to an electrical supply unit and / or control unit. Thus, no electrical contacts are required in the bearing area or in a frame of the high-speed door. This ensures a permanently reliable electrical connection.

[0013]

[0012] In another possible embodiment of the invention, the at least one heating device is designed as an electric heating mat that extends 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 at 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 in order 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.

[0014]

[0013] In a further preferred embodiment of the invention, the gate leaf can be designed as a double gate leaf, which has 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. Such a double gate leaf has a better insulating effect due to its two gate leaf sections and can also be rolled up very quickly and easily.

[0015]

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

[0016]

[0015] Furthermore, in the double gate, the first of the two gate leaf sections is preferably fixed at its upper end, while a second of the two gate leaf sections 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 gate 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 formed in the gate leaf section fixed at the top, since no electrical connection for the heating device needs to be provided in the shaft.

[0017]

[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 room. In the case of a double door leaf, as described above, preferably at least the entire outer side, i.e., the outer sides of the two door leaf parts facing away from each other, can be coated with a vapor-tight layer. This prevents the penetration of condensation into the material of the door leaf.

[0018]

[0017] The invention is described below by way of example with reference to the accompanying figures. These show:

[0019] Figure 1 shows a schematic sectional view of a high-speed door according to the invention.

[0020] Figure 2 is a schematic top view of the high-speed door as shown in Figure 1, and

[0021] Figure 3 shows a schematic sectional view of a gate leaf section with an embedded heating device.

[0022]

[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.

[0023]

[0019] In the closed state, the first gate leaf section 4 rests against a gate frame 12 with its side areas. 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 upper end of the second gate leaf section 6 is wound 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 show the unwound state in which the gate leaf 2 closes the opening between the gate frame 12. In this state, the deflection 8 rests on the ground 22 as a contact or support area.

[0024]

[0020] A heating mat 24 is integrated into the first gate leaf section 4 and the deflection area 8. The heating mat 24 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 of ​​the winding on the shaft 18. The heating mat 24 is designed to be flexible enough that it can be deflected in the area of ​​the deflection area 8 and wound up along with the shaft.

[0025]

[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.

[0026]

[0022] Figure 3 shows a schematic sectional view of an example of the construction of the first gate leaf section 4. The first gate leaf section 4 consists of two interconnected felt layers 30 and 32. These can, for example, be sewn and / or glued together. The heating mat 24 with the heating wire 26 or heating wires 26 is embedded between the felt layers 30 and 32. The heating wires 26 are attached to a carrier fabric or carrier 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 outside of the outer felt layer 30. The diffusion-tight coating 36 preferably also extends over the outside of the second gate leaf section 6. Furthermore, such a coating could also be applied to the inside, i.e., the sides facing each other of the two gate leaf sections 4 and 6.

[0027] Reference symbol list

[0028] 2 gate leaf

[0029] 4 first gate leaf section

[0030] 6 second gate leaf section

[0031] 8 Deflection

[0032] 10 pipes

[0033] 12 gate frames

[0034] 14 upper end

[0035] 16 crossbeams

[0036] 18 rotating shaft

[0037] 20 Drive

[0038] 22 Floor

[0039] 24 heating mat

[0040] 26 heating wire

[0041] 28 electrical connections

[0042] 30, 32 layers of felt

[0043] 34 Carrier material

[0044] 36 diffusion-tight coating

Claims

Claims 1. High-speed door with a flexible door leaf (2) and at least one rotatable shaft, which is designed for winding and unwinding the door leaf (2) such that in an unwound state the door leaf (2) rests with a support area on the floor (22) and in the wound-up state the support area is spaced away from the floor (22), characterized in that the door leaf (2) has at least one heating device (24) arranged in the support area.

2. High-speed door according to claim 1, characterized in that the at least one heating device (24) is an electric heating device.

3. High-speed door according to claim 1 or 2, characterized in that the at least one heating device is a flexible electric heating mat (24).

4. High-speed door according to one of the preceding claims, characterized in that the at least one heating device is arranged inside the door leaf (2).

5. High-speed door according to one of the preceding claims, characterized in that the door leaf (2) has at least two interconnected material layers (30, 32) between which the at least one heating device (24) is embedded.

6. High-speed door according to one of the preceding claims, characterized in that the door leaf (2) comprises at least one of comprising a layer of material consisting of felt and preferably two layers of material consisting of felt (30, 32).

7. High-speed door according to one of the preceding claims, characterized in that the door leaf (2) has two layers of material (30, 32) made of felt, between which the at least one heating device (24) is arranged.

8. High-speed door according to one of the preceding claims, characterized in that at least one electrical connection (28) of the at least one heating device (24) is guided to or in the door leaf (2) up to an upper end (14) of the door leaf (2).

9. High-speed door according to one of the preceding claims, characterized in that the at least one heating device is an electric heating mat (24) which extends from the support area 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).

10. High-speed door according to one of the preceding claims, characterized in that the door leaf (2) is designed as a double door leaf with two parallel extending and spaced-apart door leaf parts (4, 6) which are connected to each other at their lower ends in the bearing area and are preferably connected in an arc-shaped deflection (8). 1 1. High-speed door according to claim 10, characterized in that the at least one heating device (24) is arranged at least in the area of ​​the deflection (8).

12. High-speed door according to claim 10 or 11, characterized in that the at least one heating device, preferably in the form of an electric heating mat (24), extends at least over one of the first of the two door leaf parts (4, 6) and the deflection (8).

13. High-speed door according to one of claims 10 to 12, characterized 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).

14. High-speed door according to claim 13, characterized in that an electrical connection (28) of the at least one heating device (24) is located in the area of ​​the upper end (14) of the first door leaf part (4).

15. High-speed door according to one of the preceding claims, characterized in that the door leaf (2) is provided on at least one surface with a vapor diffusion-tight layer (36).

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