FIRE DOOR AND METHOD FOR MANUFACTURING THE FIRE DOOR

Description

Technical field

[0001] The invention relates to a fire door with a frame for installation in a wall opening with an opening plane, at least one fire door leaf that can be opened at least partially along an opening normal of the opening plane for fire-resistant closure of the wall opening, at least one vacuum insulation panel for reducing heat transfer through the fire door leaf along the opening normal when the fire door is closed, and at least one leaf sealing element that connects the frame to the fire door leaf in a windproof manner when the fire door is closed. When the fire door is closed, the leaf sealing element defines a leaf sealing plane that is arranged parallel to the opening plane.

[0002] The invention also relates to a method for manufacturing a fire door of the aforementioned type. State of the art

[0003] In buildings with multiple fire compartments, these compartments must be separated by fire doors. If heated and unheated or cooled and uncooled sections are located among the fire compartments, these sections must also be separated by airtight and thermally insulated barriers. This applies particularly to modern low-energy buildings, which, for example, have a controlled ventilation system with heat recovery.

[0004] To achieve the aforementioned separation functions, it has been common practice to install two doors one behind the other: one fire door and one thermally insulated and airtight door. This results in additional costs for planning, materials, and installation; it reduces the usable floor space of the building; and it is inconvenient for building users to have to open two doors every time they pass through. Furthermore, in the case of hinged doors, the two doors must open in opposite directions, which further complicates their use and is not permissible in an escape route for safety reasons.

[0005] Document KR101900052B1 describes an insulating and windproof fire door. This fire door comprises a main leaf, a second leaf, and an insulating cavity in between. Due to its three-layer construction, the fire door is relatively complex to manufacture and thick, which complicates its installation and operation.

[0006] Document EP2633145B1 describes a hermetic fire door which, like the fire door described in KR101900052B1, has a three-layer construction with two leaves and insulation in between. The fire door is designed to prevent the spread of heat and fluids, especially hot gases, smoke, and water, in the event of a fire. No special thermal insulation is described for normal operation.

[0007] Publication EP258049B1 describes another fire door with one or two leaves, which is very similar in its construction and function to the fire door described in EP2633145B1. Further fire doors are disclosed in publications DE10226723A1, DE3707934A1 and DE202005006686U1. Technical task

[0008] The purpose of the invention is to provide a fire door that is inexpensive to manufacture, easy to install, and versatile and convenient to use. Technical solution

[0009] The subject matter of the present invention provides a fire door according to claim 1, which solves the technical problem. The problem is also solved by a manufacturing method according to claim 12. Advantageous embodiments are described in the dependent claims. Description of the execution types

[0010] A fire door according to the invention comprises a frame for arrangement in a wall opening with an opening plane, at least one fire door leaf which can be opened at least partially along an opening normal of the opening plane for fire-resistant closure of the wall opening, and at least one vacuum insulation panel for reducing heat transfer through the fire door leaf along the opening normal in a closed state of the fire door.

[0011] The frame and / or the fire-resistant door leaf can, for example, be designed like the frame and door leaf of a standard fire-resistant door. The fire-resistant door leaf can, for instance, be mechanically connected to the frame in such a way as to create a hinged door, swing door, or swing-sliding door, whereby the fire-resistant door leaf opens, at least in its first section, from a closed position along the opening normal.

[0012] The fire door preferably meets at least the requirements of fire resistance class T30, in particular T60, especially preferably T90, according to the German industrial standard DIN 4102.

[0013] The fire door comprises at least one leaf sealing element that, when the fire door is closed, creates an airtight seal between the frame and the fire door leaf. This leaf sealing element defines a sealing plane parallel to the opening plane when the fire door is closed. When the fire door is closed, the leaf sealing element prevents airflow between the fire door leaf and the frame.

[0014] Preferably, the fire door is arranged in a wall opening of an otherwise windproof wall, so that the windproofness of the fire door does not lose its effect due to an airflow passing through the wall itself.

[0015] The leaf sealing element can, for example, comprise a sealing strip that is arranged around the perimeter of the fire door's opening. The leaf sealing element can, for example, comprise or consist of an elastomer, in particular a vulcanizate of natural rubber and / or silicone rubber. The leaf sealing element can be attached to the fire door leaf or the frame, for example, by gluing and / or clamping it to the door leaf.

[0016] The vacuum insulation panel is preferably attached to the closing side of the fire door leaf, which, when the fire door is closed, lies parallel to the opening plane. Because the vacuum insulation panel is attached to the fire door leaf, a conventional fire door leaf can be easily retrofitted with the vacuum insulation panel to achieve increased thermal insulation. However, mounting the panel on the fire door leaf has the disadvantage that it can be easily damaged during transport, installation, or use of the fire door, which could impair its thermal insulation performance.

[0017] In the context of the invention, the opening side is defined as the side of the fire door leaf that moves forward when the fire door is opened from the closed position. Similarly, the closing side is defined as the side of the fire door leaf that moves forward when the fire door is closed into the closed position. Preferably, at least one vacuum insulation panel is attached to the closing side of the fire door leaf. This offers the advantages that the vacuum insulation panel does not need to extend over the frame to achieve good insulation performance, and that the insulation performance is not impaired by hinges connecting the fire door leaf to the frame.

[0018] The fire door preferably comprises at least one panel sealing element that, in the closed state of the fire door, connects the frame to the vacuum insulation panel in an airtight manner. In the closed state of the fire door, the panel sealing element defines a panel sealing plane that is arranged parallel to the opening plane and spaced apart from the leaf sealing plane along the opening normal. Thus, in the closed state of the fire door, the leaf sealing element defines an additional sealing plane spaced apart from the leaf sealing plane, thereby significantly increasing the thermal insulation performance of the fire door.

[0019] The panel sealing element can, for example, comprise a sealing strip that is arranged around the perimeter of a passage opening in the fire door. The panel sealing element can, for example, comprise or consist of an elastomer, in particular a vulcanizate of natural rubber and / or silicone rubber. The panel sealing element can be attached to the vacuum insulation panel or to the frame, for example, by gluing and / or clamping it to the panel.

[0020] The fire door leaf preferably comprises at least one leaf sealing surface which is airtightly connected to the at least one leaf sealing element, at least when the fire door is closed. The vacuum insulation panel preferably comprises at least one panel sealing surface which is airtightly connected to the at least one panel sealing element, at least when the fire door is closed. The frame preferably comprises at least one leaf-frame sealing surface which is airtightly connected to the at least one leaf sealing element, at least when the fire door is closed. The frame also comprises at least one panel-frame sealing surface which is airtightly connected to the at least one panel sealing element, at least when the fire door is closed. The sealing surfaces are preferably aligned parallel to the opening plane, at least when the fire door is closed.

[0021] By aligning the sealing surfaces of the fire door parallel to the opening plane when closed, the sealing elements between their respective sealing surfaces are compressed along the opening normal as the fire door closes. In contrast, sealing elements between sealing surfaces that are not aligned parallel to the opening plane, particularly along the opening normal, would be sheared along the opening normal as the fire door closes, resulting in significantly higher wear of the sealing elements and thus a reduced service life.

[0022] The at least one leaf sealing element is preferably designed to absorb more energy than the at least one plate sealing element when the fire door closes. When the fire door closes, the leaf sealing element and the plate sealing element impact their respective sealing surfaces and absorb energy, which is at least partially transferred to these surfaces. This can mechanically damage the vacuum insulation panel and impair its insulating properties. Therefore, it is advantageous if the leaf sealing element, which is generally mechanically more stable than the vacuum insulation panel, absorbs more energy than the plate sealing element, which is located on the vacuum insulation panel.

[0023] The at least one leaf sealing element preferably has a higher stiffness and / or is designed to deform more during closing than the at least one plate sealing element. As a result, the leaf sealing element absorbs more energy during closing than the plate sealing element. The leaf sealing element can, for example, be thicker than the plate sealing element, so that it comes into contact with the corresponding sealing surface earlier when the fire door closes.

[0024] The fire door preferably comprises at least one connecting element that mechanically and movably connects the frame to the fire door leaf, wherein the at least one connecting element preferably comprises a hinge. The at least one connecting element can be stably and securely attached to the fire door leaf without the risk of damaging the vacuum insulation panel.

[0025] The frame comprises a leaf frame part and a panel frame part spaced apart from the leaf frame part along the opening normal and thermally decoupled from the leaf frame part by at least one separating agent, wherein at least in a closed state of the fire door the leaf frame part is airtightly connected to the at least one leaf sealing element, and the panel frame part is airtightly connected to the at least one panel sealing element.

[0026] At least one separating agent includes, for example, a number of spacers made of plastic or rubber.

[0027] The thermally separated division of the frame along the opening normal into a leaf frame part encompassing the leaf sealing plane and a panel frame part encompassing the panel sealing plane significantly reduces heat transfer through the frame along the opening normal, thus providing increased thermal insulation for the fire door.

[0028] The fire door includes at least one wall sealing element for an airtight connection between the frame and the wall surrounding the opening. To ensure an airtight connection to the wall, the wall in the area of ​​the opening preferably has a smooth and closed surface. The wall sealing element, which may, for example, comprise a foil, advantageously prevents gases or smoke from passing between the frame and the wall from one side of the fire door to the other. This improves the thermal insulation of the fire door and prevents smoke from entering fire compartments of a building not affected by a fire.

[0029] The wall sealing element is preferably arranged, at least in sections, between a leaf-type frame section and a panel-type frame section of the frame. The wall sealing element can be attached particularly easily and securely between the frame sections, for example by clamping it in place.

[0030] The vacuum insulation panel is preferably attached to the closing side of the fire door leaf, which is parallel to the leaf plane. Because the vacuum insulation panel is attached to the fire door leaf, a conventional fire door leaf can be easily retrofitted with the vacuum insulation panel to achieve increased thermal insulation. However, mounting it on the fire door leaf has the disadvantage that the vacuum insulation panel can be easily damaged during transport, installation, or use of the fire door, which could impair its thermal insulation performance.

[0031] The door leaf of the fire door preferably comprises, at least on one side of the vacuum insulation panel facing away from the fire door leaf, and preferably on all sides not facing the fire door leaf, a casing for mechanical stabilization and protection of the vacuum insulation panel. The casing can, for example, comprise a tray open to the fire door leaf, in particular a sheet metal tray, in which the vacuum insulation panel is inserted. The casing can, for example, comprise a sheet metal panel and / or a plastic, in particular a non-combustible one.

[0032] Vacuum insulation panels offer an advantage over other thermal insulation panels: their low thermal conductivity allows for sufficient thermal insulation with a significantly thinner panel. In particular, using a vacuum insulation panel makes it possible to install the insulation on a conventional fire-resistant door leaf without increasing the door's thickness. This allows for easy architectural integration and comfortable operation of such a door.

[0033] The vacuum insulation panel preferably comprises a gas-tight, evacuated shell, for example made of at least one metallized plastic film, which prevents gas from entering the vacuum insulation panel, and a porous support core within the shell. The support core prevents the evacuated shell from being compressed by ambient pressure.

[0034] A disadvantage of vacuum insulation panels is the high mechanical fragility of their casing. If the casing of a vacuum insulation panel is damaged, the vacuum breaks down and the thermal conductivity of the panel increases. Furthermore, conventional casings made of plastic film are generally flammable and not resistant to the temperatures generated in a fire, meaning they cannot be readily used on fire doors.

[0035] The core preferably comprises or consists of microporous, especially pyrogenic, silica. Microporous silica allows for very low thermal conductivity in the evacuated state of the vacuum insulation panel. Compared to other materials, such as plastic foams, microfiber materials, or fiberglass materials, microporous silica has the advantage that even with a pressure increase within the vacuum insulation panel, a relatively good insulating effect is still achieved, allowing the vacuum insulation panel to be used for a long period. This is particularly advantageous for permanently installed fire doors, which cannot be easily replaced when their thermal insulation deteriorates. Furthermore, microporous silica is non-combustible.

[0036] The supporting core preferably comprises an opacifying agent to reduce heat transfer by infrared radiation. The opacifying agent comprises, for example, carbon black, iron oxide, titanium oxide and / or silicon carbide.

[0037] The casing preferably comprises or consists of at least one metal composite foil. The at least one metal composite foil comprises, for example, a plastic foil coated with a metal, particularly aluminum. The casing can comprise at least one metal foil, particularly an aluminum foil, and at least one plastic foil enclosing the at least one metal foil. The combination of at least one metal foil with at least one plastic foil achieves a particularly high gas tightness of the casing.

[0038] The at least one vacuum insulation panel preferably comprises a plurality of gas-tightly separated chambers, wherein a plurality of, for example, 2 to 50, in particular 5 to 25, chambers are arranged side by side and / or one above the other along the plane of the sheet and / or a plurality of, for example, 2, 3, 4 or 5, chambers are arranged one behind the other along the normal of the sheet.

[0039] The division into chambers means that if the outer shell is damaged, only the affected chambers are ventilated, not the entire vacuum insulation panel. This ensures that the vacuum insulation panel maintains sufficient thermal insulation even when damaged.

[0040] For example, by having chambers lying side by side and / or on top of each other along the plane of the sheet, it is possible to cut out a section for a door handle from the vacuum insulation panel without damaging other areas of the vacuum insulation panel.

[0041] For example, by arranging chambers one behind the other along the sheet normal, it is possible to insert fasteners such as screws for attaching the vacuum insulation panel to the fire door leaf to a predetermined depth in the vacuum insulation panel without ventilating the entire vacuum insulation panel.

[0042] At least one sealing surface for a windproof connection with the at least one sealing element of the fire door is preferably formed by at least one overhang of the fire door leaf over the vacuum insulation panel in at least one overhang direction parallel to the leaf plane. If the vacuum insulation panel does not completely cover the fire door leaf, so that at least one overhang of the fire door leaf over the vacuum insulation panel is created, this results in a particularly simple way in forming the at least one sealing surface.

[0043] For example, the fire door leaf can protrude beyond the vacuum insulation panel on a right, left and top edge of the fire door leaf, so that the respective protrusion forms the leaf sealing surface.

[0044] The at least one vacuum insulation panel is preferably positively attached to the fire door leaf, particularly positively in all directions, preferably with a number of clips. This positive attachment ensures that the vacuum insulation panel is reliably held to the fire door leaf without risk of damage.

[0045] The vacuum insulation panel could also be bonded to the fire door leaf, for example by gluing. However, it has been found that due to poor ventilation of the contact surface between the vacuum insulation panel and the fire door leaf, a stable adhesive bond can only be achieved with a long curing time, resulting in a significantly longer manufacturing time than with a form-fit connection.

[0046] Preferably, at least one vacuum insulation panel includes at least one recess for a fire door handle. This allows the door handle to be easily installed without damaging the vacuum insulation panel.

[0047] A method according to the invention is designed for manufacturing a fire door according to the invention. The method comprises at least providing a fire door leaf and attaching at least one vacuum insulation panel to a closing side of the fire door leaf, which lies parallel to a plane of the fire door leaf, in order to reduce heat transfer through the fire door leaf perpendicular to the plane of the leaf.

[0048] The method can be designed in particular as described above in connection with the fire door according to the invention, from which the advantages mentioned therein result.

[0049] The fastening preferably comprises a positive-locking fastening, in particular a positive-locking fastening in all directions, for example with a number of clamps. A positive-locking fastening allows the vacuum insulation panel to be reliably held to the fire door leaf without risk of damage. Brief description of the drawings

[0050] Further advantages, objectives, and features of the invention are explained with reference to the following description and accompanying drawings, which illustrate exemplary objects according to the invention. Features that are identical in the figures, at least with regard to their function, may be identified by the same reference numerals, although these features need not be numbered and explained in all figures.

[0051] Figure 1 shows a horizontal section of an embodiment of a fire door according to the invention. Fig. 1 Figure 1Figure 1 shows a horizontal section of an embodiment of a fire door 300 according to the invention. The fire door 300, shown in a closed state, comprises a frame 200, which is arranged in a wall opening of a wall 002 with an opening plane E.

[0052] The illustrated fire door 300 comprises a fire door leaf 110 that can be opened at least partially along an opening normal N of the opening plane E for fire-resistant closure of the wall opening. The fire door leaf 110 can, for example, be designed like a standard fire door leaf.

[0053] The frame 200 is mechanically connected to the fire door leaf 110, for example, via a number of connecting elements 330, in particular hinges. The fire door 300 is designed, for example, as a swing door, so that the fire door leaf 110 must first be opened from the closed state of the fire door 300 shown, along the opening normal N.

[0054] The illustrated fire door 300 comprises at least one vacuum insulation panel 120 for reducing heat transfer through the fire door leaf 110 along the opening normal N when the fire door 300 is closed. The vacuum insulation panel 120 is, for example, attached to a closing side 112 of the fire door leaf 110, which lies parallel to the opening plane E when the fire door 300 is closed, in particular by means of a positive locking connection.

[0055] The fire door leaf 110 and the vacuum insulation panel 120 together form a door leaf 100 of the fire door 300.

[0056] The illustrated fire door 300 comprises a leaf sealing element 313, which connects the frame 200 to the fire door leaf 110 in a windproof manner when the fire door 300 is closed, wherein the leaf sealing element 313 defines a leaf sealing plane BE in the closed state of the fire door 300, which is arranged parallel to the opening plane E.

[0057] The fire door leaf 110 preferably comprises a leaf sealing surface 113 which, when the fire door 300 is closed, is airtightly connected to the leaf sealing element 313. The frame 200 preferably comprises a leaf-frame sealing surface 213 which is airtightly connected to the leaf sealing element 313.

[0058] The leaf sealing element 313 includes, for example, a sealing strip circumferential around a passage opening of the fire door 300, which is attached, for example, to the leaf frame sealing surface 213.

[0059] The illustrated fire door 300 comprises a panel sealing element 323 which, in the closed state of the fire door 300, connects the frame 200 windproof to the vacuum insulation panel 120, wherein the panel sealing element 323, in the closed state of the fire door 300, defines a panel sealing plane PE which is arranged parallel to the opening plane E and is spaced apart from the leaf sealing plane BE along the opening normal N.

[0060] The vacuum insulation panel 120 preferably comprises a panel sealing surface 123 which, when the fire door 300 is closed, is airtightly connected to the panel sealing element 323. The frame 200 preferably comprises a panel-frame sealing surface 223 which is airtightly connected to the panel sealing element 323.

[0061] The leaf sealing surface 113 is preferably formed by a projection of the fire door leaf 110 over the vacuum insulation panel 120 in at least one projection direction parallel to a leaf plane of the door leaf 100 which, in the closed state of the fire door 300, lies parallel to the opening plane E.

[0062] For example, the fire door leaf 110 can protrude beyond the vacuum insulation panel 120 at a right, left and upper edge of the fire door leaf 110, so that the respective protrusion forms the leaf sealing surface 113.

[0063] The panel sealing element 323 includes, for example, a sealing strip circumferential around a passage opening of the fire door 300, which is attached, for example, to the panel frame sealing surface 223.

[0064] The sealing surfaces 113, 123, 213, 223 are preferably aligned parallel to the opening plane E when the fire door 300 is closed.

[0065] The frame 200 comprises a leaf frame part 210 and a plate frame part 220 spaced apart from the leaf frame part 210 along the opening normal N and thermally decoupled from the leaf frame part 210 by at least one separating agent 230, for example by a number of elastomer buffers.

[0066] The leaf-frame part 210 is at least in the closed state of the fire door 300 airtight connected to the leaf sealing element 313, and the panel-frame part 220 is at least in the closed state of the fire door 300 airtight connected to the panel sealing element 323.

[0067] The illustrated fire door 300 comprises at least one wall sealing element 240, namely a windproof foil, wherein the wall sealing element 240 connects the frame 200 to the wall 002 in a windproof manner, wherein the wall sealing element 240 is preferably arranged sectionally between the leaf frame part 210 and the panel frame part 220 of the frame 200.

[0068] The vacuum insulation panel 120 preferably comprises a support core 124 made of pyrogenic silica and a gas-tight casing 125 consisting of a metal foil and a plastic film surrounding the support core 124. Furthermore, the vacuum insulation panel 120 can be mechanically stabilized and protected, at least on the sides not facing the fire door leaf 110, by a casing, for example, a sheet metal tray (not shown).

[0069] The vacuum insulation panel 120 preferably includes at least one recess for a door handle 310 of the fire door 300. List of reference symbols

[0070] BE Leaf density level 200 frame E Opening level 210 Leaf-frame part N Opening normal 213 Leaf-frame sealing surface PE plate sealing layer 220 Panel frame part 002 Wall 223 Panel-frame sealing surface 100 Door leaf 230 Release agent 110 Fire door leaf 240 Wall sealing element 111 Opening page 300 fire door 112 Closing page 310 Door handle 113 Leaf density area 313 Leaf sealing element 120 vacuum insulation panel 323 Plate sealing element 123 Plate sealing surface 330 Connecting element 124 Support core 125 Covering

Claims

1. A fire door (300) comprising a) a frame (200) for installation in a wall opening having an opening plane (E), b) at least one fire door leaf (110) which can be opened at least in sections along an opening normal (N) to the opening plane (E) for the fire-retardant closure of the wall opening, c) at least one vacuum insulation panel (120) for reducing heat transfer through the fire door leaf (110) along the opening normal (N) when the fire door (300) is closed, and d) at least one leaf sealing element (313) which connects the frame (200) to the fire door leaf (110) in a wind-tight manner when the fire door (300) is closed, e) wherein the leaf sealing element (313) defines a leaf sealing plane (BE) which is arranged parallel to the opening plane (E) when the fire door (300) is closed, f) wherein the vacuum insulation panel (120) is secured to a closing side (112) of the fire door leaf (110) which lies parallel to the opening plane (E) when the fire door (300) is closed, characterised in that g) the fire door (300) comprises at least one panel sealing element (323) which connects the frame (200) to the vacuum insulation panel (120) in a wind-tight manner when the fire door (300) is closed, h) wherein the panel sealing element (323) defines a panel sealing plane (PE) which is arranged parallel to the opening plane (E) and is spaced apart from the leaf sealing plane (BE) along the opening normal (N) when the fire door (300) is closed, i) wherein the frame (200) comprises a leaf frame part (210) and a panel frame part (220) spaced apart from the leaf frame part (210) along the opening normal (N) and thermally decoupled from the leaf frame part (210) by at least one separating element (230), j) wherein the leaf frame part (210) is connected in a wind-tight manner to the at least one leaf sealing element (313), and the panel frame part (220) is connected in a wind-tight manner to the at least one panel sealing element (323) at least when the fire door (300) is closed, k) wherein the fire door (300) comprises at least one wall sealing element (240) for wind-tightly connecting the frame (200) to a wall (002) surrounding the wall opening.

2. The fire door (300) according to claim 1, characterised in that a) the fire door leaf (110) comprises at least one leaf sealing surface (113) which is connected in a wind-tight manner to the at least one leaf sealing element (313) at least when the fire door (300) is closed, and c) the vacuum insulation panel (120) comprises at least one panel sealing surface (123) which is connected in a wind-tight manner to the at least one panel sealing element (323) at least when the fire door (300) is closed, d) the frame (200) comprises at least one leaf frame sealing surface (213) which is connected in a wind-tight manner to the at least one leaf sealing element (313) at least when the fire door (300) is closed, and e) the frame (200) comprises at least one panel frame sealing surface (223) which is connected in a wind-tight manner to the at least one panel sealing element (323) at least when the fire door (300) is closed, f) wherein the sealing surfaces (113, 123, 213, 223) are aligned parallel to the opening plane (E) at least when the fire door (300) is closed.

3. The fire door (300) according to one of claims 1 to 2, characterised in that a) the at least one leaf sealing element (313) is designed to absorb more energy than the at least one panel sealing element (323) when the fire door (300) is closed, b) wherein the at least one leaf sealing element (313) preferably has a higher stiffness and / or is designed to be deformed more when the fire door (300) is closed than the at least one panel sealing element (323).

4. The fire door (300) according to any one of claims 1 to 3, characterised by a) at least one connecting element (330) mechanically connecting the frame (200) to the fire door leaf (110) in a movable manner, b) wherein the at least one connecting element (330) preferably comprises a hinge.

5. The fire door (300) according to any one of claims 1 to 4, characterised in that the wall sealing element (240) comprises a film.

6. The fire door (300) according to claim 5, characterised in that the wall sealing element (240) is arranged, at least in sections, between the leaf frame part (210) and the panel frame part (220) of the frame (200).

7. The fire door (300) according to any one of claims 1 to 6, characterised in that the vacuum insulation panel (120) a) comprises at least one support core (124) containing pyrogenic silica and preferably cellulose and / or a opacifying agent, and b) comprises at least one gas-tight casing (125) made of a metal composite foil, which encloses the support core (124).

8. The fire door (300) according to any one of claims 1 to 6, characterised in that the at least one vacuum insulation panel (120) comprises a plurality of chambers separated from one another in a gas-tight manner, wherein a plurality of chambers are arranged side by side along the leaf plane and / or a plurality of chambers are arranged one behind the other along the leaf normal.

9. The fire door (300) according to any one of claims 1 to 8, characterised in that at least one panel sealing surface (123) for wind-tight connection to the at least one panel sealing element (323) of the fire door (300) is formed by at least one projection (U) of the fire door leaf (110) over the vacuum insulation panel (120) in at least one projection direction parallel to the leaf plane.

10. The fire door (300) according to one of claims 1 to 9, characterised in that the at least one vacuum insulation panel (120) is secured to the fire door leaf (110) by positive locking, preferably using a number of clips (140).

11. The fire door (300) according to any one of claims 1 to 10, characterised in that the at least one vacuum insulation panel (120) comprises at least one recess for a door handle (310) of the fire door (300).

12. A method for manufacturing a fire door (300) according to any one of claims 1 to 11, characterised by the following steps a) providing a fire door leaf (110), and b) attaching at least one vacuum insulation panel (120) to a closing side (112) of the fire door leaf (110) lying parallel to a leaf plane of the fire door leaf (110) in order to reduce heat transfer through the fire door leaf (110) perpendicular to the leaf plane.

13. The method according to claim 12, characterised in that the attachment of the at least one vacuum insulation panel (110) comprises a positive-locking attachment, preferably using a number of clips (140).