Underfloor heating system with graphite mat

Abstract

The invention relates to a heat distribution plate (1), wherein the heat distribution plate (1) comprises a groove (2) arranged to receive a wire or a tube (4) from a heating system to provide heating and / or cooling. The invention further relates to various heating arrangements (10), comprising a heat distribution plate (1), a device (100) for forming a heat distribution plate (1), and a method (700) for manufacturing a heat distribution plate (1).

Description

AREA OF TECHNOLOGY

[0001] The invention relates to a heat distribution plate, wherein the heat distribution plate comprises a groove arranged to receive a wire or a tube from a heating system in order to provide heating and / or cooling. The invention further relates to various heating arrangements, comprising a heat distribution plate, a device for forming a heat distribution plate, and a method for manufacturing a heat distribution plate. GENERAL STATE OF THE ART

[0002] Heating or cooling buildings is a process that requires large amounts of energy. Since it is desirable for our society to reduce its environmental impact, it is also desirable to reduce the amount of energy required for heating and / or cooling. Additionally, it would be desirable to reduce the amount of building materials needed for installing such heating systems and the like, so as not to simply avoid the necessary energy consumption by using more raw materials for insulation.

[0003] Heating systems perceived as efficient and comfortable often utilize a heat source (e.g., heating elements) that uses electricity, water, air, or another medium to transport heat to a surface being heated. Alternatively, a heating system can use water, air, or a similar medium to transport heat away from a surface being cooled.

[0004] To facilitate the installation of these heating elements, they may be supplied in individual parts, or it may be possible to apply material to the heat source to distribute the heat efficiently, so that a uniform temperature is provided over the entire area where the heating elements are installed.

[0005] Furthermore, in order to obtain good heat diffusion from the heating element to the entire area, the heat must be transferred from the heating element to a heat distribution arrangement.

[0006] One common solution is to provide the heat source with an integrated heat exchanger, typically made of aluminum. However, this can increase the cost and complexity of installing the heating system and may require professional assistance during installation. Aluminum also increases the risk of sharp edges from cutting and bending the aluminum heat exchanger, further complicating installation. A similar discussion can be held for a cooling system that uses a cooling source (e.g., cooling elements) to cool a surface. In this case, heat from the environment is absorbed by the cooled surface, which in turn transfers the heat to the cooling source via the integrated heat exchanger.

[0007] Therefore, it is desirable to provide a device or similar that could simplify the installation of a heating or cooling system using large surfaces in buildings, as well as reduce the amount of material used for heat distribution. Such a device should also be inexpensive and easy to install. BRIEF SUMMARY OF THE INVENTION

[0008] An object of the present invention is to provide a heat distribution plate, a floor heating arrangement, a wall heating arrangement, and a ceiling heating arrangement according to the invention, comprising the heat distribution plate, a device for forming a heat distribution plate, and a method for manufacturing a heat distribution plate. This object is achieved by the features of the characterizing section of claims 1, 4, 7, 8, 9, and 13. Variations of the invention are described in the appended dependent claims.

[0009] A first aspect of the invention relates to a heat distribution plate. The heat distribution plate includes a groove designed to accommodate a wire or pipe from a heating system for heating and / or cooling. The heat distribution plate is a laminated mat, the first layer of which comprises graphite. The heat distribution plate is intended to replace the aluminum profiles currently in use. The use of graphite in one of the layers of the heat distribution plate allows for improved heat diffusion due to graphite's excellent thermal properties. Furthermore, the heat distribution plate is suitable for any type of underfloor heating system, making it highly versatile. Additionally, it is unnecessary to apply a protective layer before leveling compound is applied.For aluminum profiles, a protective layer, vapor barrier, geotextile or similar material must be added to prevent a reaction between the aluminum and the leveling compound that leads to corrosion.

[0010] The heat distribution plate can include a second layer consisting of a thermoplastic nonwoven fabric mixed with an adhesive, an aluminum foil, or a copper foil. These materials have been shown to exhibit good material properties with regard to both bonding to the graphite material and heat diffusion.

[0011] The amount of adhesive in the second nonwoven layer can range from 20 to 40% by weight. This ratio has been shown to provide the nonwoven layer with additional insulation and better fixation to the pipe or wire.

[0012] A second aspect of the invention relates to an underfloor heating arrangement comprising a heat distribution plate according to the first aspect of the invention. Using a heat distribution plate as described above, heat diffusion in the underfloor heating arrangement can be made more efficient, thus requiring less material to achieve the same or even improved functionality of the underfloor heating arrangement.

[0013] The heat distribution plate can be installed beneath the pipes of a wet underfloor heating system or beneath the cables of a dry underfloor heating system. The heat distribution plate at least partially encloses a wire or pipe from the underfloor heating system. The heat distribution plate is suitable for any type of underfloor heating system, making it highly versatile.

[0014] The underfloor heating system can include a heat distribution system that partially or completely incorporates graphite. Furthermore, by adding a heat distribution system that incorporates graphite, it is possible to further improve heat diffusion within the underfloor heating system.

[0015] Alternatives for the second aspect of the invention relate to a wall heating arrangement comprising a heat distribution plate according to the first aspect of the invention, and a ceiling heating arrangement comprising a heat distribution plate according to the first aspect of the invention.

[0016] A third aspect of the invention relates to a device for forming a heat distribution plate, wherein the device comprises the following: - a preheating furnace arranged to preheat a heat distribution plate blank, - a preforming furnace comprising a guide arrangement, wherein a central part of the preheated heat distribution plate blank is pressed down, - a forming arrangement comprising two forming rollers, wherein a lower forming roller includes a central forming recess and wherein an upper forming roller includes a central forming projection arranged to fit into the central forming recess of the lower forming roller, wherein, when the preheated and preformed heat distribution plate blank is passed between the two forming rollers, a heat distribution plate is formed comprising a central groove arranged to receive a heat source from a wet or dry underfloor heating system, - a cutting arrangement designed to cut the heat distribution plate to a desired length.

[0017] The temperature in the preheating furnace can range between 100 °C and 200 °C, and the temperature of the preforming furnace can range between 120 °C and 170 °C. It has been shown that these temperatures ensure that the heat distribution plate blank is sufficiently preheated to be preformed in both steps.

[0018] The central forming projection of the upper forming roll can be positioned at a distance of 60–90 mm from the central forming recess of the lower forming roll. For heat distribution plates comprising a layer of nonwoven fabric, it is preferred, but not necessary, to have a gap between the upper and lower forming rolls.

[0019] The upper and / or lower forming roller may include external guide rails arranged to center the heat distribution plate blank during the forming process. This ensures the heat distribution plate is always centered, resulting in a straight groove that is always in the correct position on the plate.

[0020] A fourth aspect of the invention relates to a method for manufacturing a heat distribution plate, wherein the method comprises the following steps: - Providing a heat distribution plate blank comprising a laminate, the first layer comprising graphite, - Advancing the heat distribution plate blank through a preheating furnace, - Advancing the preheated heat distribution plate blank through a preforming furnace in which a guide arrangement presses down a central part of the heat distribution plate blank, - Advancing the preheated and pre-formed heat distribution plate blank through a pair of forming rollers, forming the heat distribution plate which includes a central groove arranged to receive a heat source from a wet or dry underfloor heating system, - Cutting the heat distribution plate to the desired length. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 schematically shows a heat distribution plate according to a first aspect of the invention, Fig. Figure 2 schematically shows a first embodiment of an underfloor heating arrangement according to a second aspect of the invention, Fig. Figure 3 schematically shows a second embodiment of an underfloor heating arrangement according to a second aspect of the invention, Fig. Figure 4 schematically shows a first embodiment of an underfloor heating arrangement according to a second aspect of the invention, Fig. Figure 5 schematically shows a device for forming a heat distribution plate according to a third aspect of the invention, Fig. Figure 6 schematically shows a lower forming roller and an upper forming roller of the device. Fig. 5 with more details. Fig. Figure 7 schematically shows a flowchart of a method for manufacturing a heat distribution plate according to a fourth aspect of the invention. DETAILED DESCRIPTION

[0021] In the context of this description, a heating system refers to a system that provides heating and / or cooling through pipes or wires placed beneath a surface. The heating system can be an underfloor heating system, a wall heating system, or a ceiling heating system.

[0022] Fig. Figure 1 schematically shows a heat distribution plate 1 according to a first aspect of the invention. The heat distribution plate 1 comprises a longitudinal groove 2 arranged to receive a wire or a tube from a heating system to provide heating and / or cooling. On each side of the longitudinal groove 2 are lips 3 extending to each lateral side of the heat distribution plate and running along the length of the longitudinal groove 2. The lips have a width w of approximately 15–25 mm, in particular a width w of approximately 20 mm on each lateral side of the heat distribution plate 1.

[0023] In the example from Fig. A pipe 4 is installed in groove 2. The heat distribution plate 1 is a laminated mat comprising a first layer of graphite. The heat distribution plate 1 further comprises a second layer consisting of a thermoplastic nonwoven fabric mixed with an adhesive, an aluminum foil, or a copper foil. If the heat distribution plate 1 includes a second nonwoven layer, the amount of adhesive in the second nonwoven layer is between 20 and 40% by weight. Additional layers can be added if required.

[0024] An example of a typical length L for heat distribution plate 1 is between 1130 mm and 1170 mm. The length L is adjusted based on the standards for the specific application and country.

[0025] The heat distribution plate 1 fits most prefabricated heating installation layers in which a recess is pre-milled for use with a standard diameter pipe. This means that little or no modification of prefabricated heating installation layers is necessary, and it is easy to replace existing aluminum profiles with the heat distribution plate 1 according to the invention.

[0026] Furthermore, the heat distribution plate 1 according to the invention leads to an improved working environment, as it is easy to handle and can be easily cut with a knife or scissors if necessary. An aluminum profile is easily deformed and can have sharp edges that cause cuts during handling.

[0027] Furthermore, aluminium profiles can cause noises, such as snapping, due to temperature changes; this is not present in the heat distribution plate 1 according to the invention.

[0028] Since the heat distribution plate 1 according to the invention is also easy to pack, the overall transport volume is smaller, which leads to lower transport costs.

[0029] Fig. Figure 2 schematically shows a first embodiment of an underfloor heating arrangement 10 according to a second aspect of the invention. The underfloor heating arrangement comprises a heat distribution plate 1 according to Figure 2. Fig. 1.

[0030] In the embodiment from Fig. The underfloor heating arrangement 10 comprises (from bottom to top) a first floor layer 11, which consists of extruded polystyrene (XPS) used for insulation, and a second floor layer 12, which consists partly of autoclaved aerated concrete (AAC) or similar material and partly of leveling compound on the AAC. A recess 20, 18 mm wide and 17 mm high, is milled into the second layer 12 using a milling tool. The heat distribution plate 1 is positioned in the milled recess 20 such that the groove 2 of the heat distribution plate 1 is located within the recess 20 and the lips 3 are positioned on the leveling compound of the second floor layer 12.

[0031] As in Fig. As described in Figure 1, a pipe 4 of an underfloor heating system is placed within the groove 2 of the heat distribution plate 1. According to the illustration, the heat distribution plate 1 encloses at least half of the pipe 4 to ensure good heat transfer between the pipe 4 and the entire heat distribution plate 1. The graphite throughout the heat distribution plate 1 ensures that the heat from the pipe is distributed across the entire surface.

[0032] A heat distribution arrangement 15, which partially or completely comprises graphite, is placed on the second layer 12 and the lips 3 of the heat distribution plate 1. The heat distribution arrangement 15 contacts the lips 3 of the heat distribution plate 1 and preferably an upper part of the pipe 4 of the underfloor heating system.

[0033] A third layer 13, comprising a leveling compound, is placed on the heat distribution arrangement 15. Optionally, an intermediate layer 16 can be placed between the heat distribution arrangement 15 and the third layer 13 to separate the leveling compound of the third layer 13 from the heat distribution arrangement 15.

[0034] In this way, the heat distribution arrangement 15 and other parts of the underfloor heating arrangement 10 can be recycled and / or reused in a further installation. In the embodiment shown in Fig. 2. The intermediate layer 16 can comprise a geotextile or cardboard.

[0035] An exemplary installation of the underfloor heating arrangement 10 from Fig. 2 can be as follows. The first layer 11 has a height between 25 and 35 mm, the second layer 12 has a height between 35 and 45 mm, with the AAC having a height between 25 and 35 mm and the leveling compound having a height between 5 and 15 mm, and the third layer 13 has a height between 2.5 and 7.5 mm. The total height h of the underfloor heating arrangement 10 is between 70 and 80 mm.

[0036] In particular, the first layer 11 has a height of 30 mm, the second layer 12 has a height of 40 mm, with the AAC having a height of 30 mm and the leveling compound having a height of 10 mm, and the third layer 13 has a height of 5 mm. The total height h of the underfloor heating arrangement 10 is between 75 mm.

[0037] Fig. Figure 3 schematically shows a second embodiment of an underfloor heating arrangement 10 according to a second aspect of the invention. Similar to the underfloor heating arrangement 10 from Fig. 2 includes the underfloor heating arrangement 10 from Fig. 3 a heat distribution plate 1 according to Fig. 1.

[0038] In the embodiment from Fig. The underfloor heating arrangement 10 (from bottom to top) comprises a first floor layer 11, which includes extruded polystyrene (XPS) used for insulation, and a second floor layer 12, which includes a fiberboard. A recess 20, 18 mm wide and 17 mm high, is milled into the second layer 12 using a milling tool. The heat distribution plate 1 is positioned in the milled recess 20 such that the groove 2 of the heat distribution plate 1 is located within the recess 20 and the lips 3 are placed on the leveling compound.

[0039] As in Fig. As described in Figure 1, a pipe 4 of an underfloor heating system is placed within the groove 2 of the heat distribution plate 1. According to the illustration, the heat distribution plate 1 encloses at least half of the pipe 4 to ensure good heat transfer between the pipe 4 and the entire heat distribution plate 1. The graphite throughout the heat distribution plate 1 ensures that the heat from the pipe 4 is distributed across the entire surface of the heat distribution plate 1.

[0040] A heat distribution arrangement 15, which partially or completely comprises graphite, is placed on the second layer 12 and the lips 3 of the heat distribution plate 1. The heat distribution arrangement 15 contacts the lips 3 of the heat distribution plate 1 and preferably an upper part of the pipe 4 of the underfloor heating system.

[0041] A third layer 13, comprising a leveling compound, is placed on the heat distribution arrangement 15. Optionally, an intermediate layer 16 can be placed between the heat distribution arrangement 15 and the third layer 13 to separate the leveling compound of the third layer 13 from the heat distribution arrangement 15. In this way, the heat distribution arrangement 15 and other parts of the underfloor heating arrangement 10 can be recycled and / or reused in a further installation. In the exemplary embodiment from Fig. 3. The intermediate layer 16 can include a vapor barrier.

[0042] An exemplary installation of the underfloor heating arrangement 10 from Fig. 3 can be as follows. The first layer 11 has a height between 25 and 35 mm, the second layer 12 has a height between 35 and 45 mm, and the third layer 13 has a height between 10 and 20 mm. The total height of the underfloor heating arrangement 10 is between 75 and 85 mm.

[0043] Specifically, the first layer 11 has a height of 30 mm, the second layer 12 has a height of 36 mm, and the third layer 13 has a height of 15 mm. The total height of the underfloor heating arrangement 10 is 81 mm.

[0044] The aforementioned underfloor heating arrangements 10 are described as having a pipe 4 that carries a fluid for transporting heat to and / or away from the underfloor heating arrangement 10. It is also possible to use the underfloor heating arrangement 10 with electrical wires for heating. The principle is the same, and the size of the recess 20 is adjusted accordingly.

[0045] Fig. Figure 4 schematically shows a third embodiment of an underfloor heating arrangement 10 according to a second aspect of the invention. The underfloor heating arrangement 10 comprises a heat distribution plate 1 according to Fig. 1.

[0046] In the embodiment from Fig. The underfloor heating arrangement 10 comprises (from bottom to top) a first floor layer 11, which includes reinforced concrete; a second floor layer 12, which includes extruded polystyrene (XPS) used for insulation; and a third floor layer 13, which includes concrete. A recess 20, 18 mm wide and 17 mm high, is milled into the third layer 13 using a milling tool. The heat distribution plate 1 is positioned in the milled recess 20 such that the groove 2 of the heat distribution plate 1 is located within the recess 20 and the lips 3 are placed on the leveling compound. Alternatively, the third layer 13 can be an extension of the second layer 12, which includes XPS, or it can consist of a separate XPS layer into which the recess 20 is milled.

[0047] As in Fig. As described in Figure 1, a pipe 4 of an underfloor heating system is placed within the groove 2 of the heat distribution plate 1. According to the illustration, the heat distribution plate 1 encloses at least half of the pipe 4 to ensure good heat transfer between the pipe 4 and the entire heat distribution plate 1. The graphite throughout the heat distribution plate 1 ensures that the heat from the pipe is distributed across the entire surface.

[0048] A heat distribution arrangement 15, which partially or completely comprises graphite, is placed on the third layer 13 and the lips 3 of the heat distribution plate 1. The heat distribution arrangement 15 contacts the lips 3 of the heat distribution plate 1 and preferably an upper part of the pipe 4 of the underfloor heating system.

[0049] A fourth layer 14, comprising a leveling compound, is placed on the heat distribution arrangement 15. Optionally, an intermediate layer 16 can be placed between the heat distribution arrangement 15 and the fourth layer 14 to separate the leveling compound of the fourth layer 14 from the heat distribution arrangement 15. In this way, the heat distribution arrangement 15 and other parts of the underfloor heating arrangement 10 can be recycled and / or reused in a further installation. In the exemplary embodiment from Fig. 2. The intermediate layer 16 can comprise a geotextile or cardboard.

[0050] An exemplary installation of the underfloor heating arrangement 10 from Fig. 4 can be as follows. The first layer 11 has a height between 70 and 100 mm, the second layer 12 has a height between 30 and 100 mm, the third layer 13 has a height between 30 and 60 mm, and the fourth layer 14 has a height between 10 and 30 mm. The total height of the underfloor heating arrangement 10 is between 140 and 290 mm.

[0051] The specific underfloor heating arrangement 10 from Fig. 4 has shown that it can eliminate the need for up to 20mm of leveling surface, resulting in a large reduction in material.

[0052] An example of a heat spreader 15, which partially comprises graphite, can be seen at https: / / xyclimate.se / produkt / heat-spreader / . The thickness of the heat spreader 15, which comprises either all or part graphite, is approximately 0.7 mm. It is also possible for the heat spreader 15 to consist entirely of graphite. The thickness of the heat spreader 15, which consists entirely of graphite, is approximately 0.4 mm.

[0053] In the exemplary embodiments from the Fig. 2-4 The leveling compound can optionally, but not necessarily, be fiber-reinforced to improve its properties. Furthermore, the intermediate layer 16 in all embodiments can be made from the Fig. 2-4 include a vapor barrier.

[0054] Common pipe diameters for heating systems are 8, 12, 14, 17, and 20 mm. The examples from the Fig. Figures 2-4 show an installation using the most common pipe diameter, 16 mm, which is used for most domestic and commercial applications. The width and height of recess 20 are therefore 18 mm and 17 mm, respectively.

[0055] Sometimes 17 mm pipes are used instead of 16 mm pipes. Pipes with diameters of 8, 12, and 14 mm are used, for example, in bathrooms, and 20 mm pipes are used in industrial applications. The width and height of the 20 mm recess are adjusted accordingly in these cases.

[0056] The aforementioned underfloor heating arrangements 10 are described as having a pipe 4 that carries a fluid for transporting heat to and / or away from the underfloor heating arrangement 10. It is also possible to use the underfloor heating arrangement 10 with electrical wires for heating. The principle is the same, and the size of the recess 20 is adjusted accordingly.

[0057] In the Fig. Figures 2-4 show different examples of underfloor heating arrangements. It is also possible to use the profile for heating or cooling walls or ceilings with appropriate adjustments.

[0058] The heat distribution plate 1 encloses a larger portion of a pipe. A heat distribution plate 1 with a fleece mixed with adhesive provides additional insulation and better fixation of the heat distribution plate 1 to the pipe. The heat from the underfloor heating system is conducted to the edges of the heat distribution plate 1 and distributed to the rest of the floor. Using a heat distribution arrangement 15 that partially incorporates graphite also distributes heat from the top of the pipe and covers approximately 60% of the floor surface. A heat distribution arrangement 15 that completely incorporates graphite covers 100% of the floor surface. When using aluminum, 70–85% of the floor surface is covered. One advantage of using graphite is that graphite has a thermal conductivity of over 300 W / mK across the floor surface (i.e., in an xy-plane), but only 3.5 W / mK in the vertical direction (i.e., a z-direction).Aluminum and copper have the same thermal conductivity in all directions.

[0059] Another advantage is that the center-to-center distance between the pipes can be increased by 40% compared to today's systems.

[0060] Fig. Figure 5 schematically shows a device 100 for forming a heat distribution plate 1 according to a third aspect of the invention. The device 100 comprises a preheating furnace 102 in which a heat distribution plate blank 104 is preheated. The heat distribution plate blank 104 is manufactured elsewhere and can be in the form of a roll 106, as shown in Figure 5. Fig. 5 shown, or are available in the form of arcs that are advanced into the preheating furnace 102. The width of the heat distribution plate blank 104 is approximately 80–90 mm for heat distribution plates 1 for pipes with a diameter of 16 mm and approximately between 90 and 100 mm for heat distribution plates 1 for pipes with a diameter of 20 mm. The roll 106 of the heat distribution plate blank 104 can comprise 100 m of the manufactured heat distribution plate blank 104.

[0061] The apparatus further comprises a preforming furnace 108, which includes a guide arrangement 110, wherein a central part of the preheated heat distribution plate blank 104 is pressed down. A guide arrangement 110, which, for example, comprises a rod or a cylinder, is installed inside the preforming furnace 108, such that when the preheated heat distribution plate blank 104 interacts with the guide arrangement 110, a central part of the preheated heat distribution plate blank 104 is pressed down to form the longitudinal groove 2 of the heat distribution plate 1. In one example, a first end of the guide arrangement 110 is attached to an inner roof of the preforming furnace 108 and extends downwards along part of the length of the preforming furnace 108 towards one end of the preforming furnace 108. A second end of the guide arrangement 110 interacts with the heat distribution plate blank 104 to form the central groove 2.The second end of the guide assembly 110, which forms the central groove 2, can be tapered and include a cavity. The guide assembly 110 presses downwards onto the preheated heat distribution plate blank 104, thereby forming the groove 2. Guide rails inside the preforming furnace 108 (not shown) ensure that the heat distribution plate blank 104 is centered such that the groove 2 is correctly aligned.

[0062] The device further comprises a forming arrangement 112, which includes two forming rollers 114, 116, wherein a lower forming roller 114 comprises a central forming recess 114a extending around the circumference of the lower forming roller 114, and wherein an upper forming roller 116 comprises a central forming projection 116a extending around the circumference of the upper forming roller 116 and arranged to fit into the central forming recess 114a of the lower forming roller 114.

[0063] The lower forming roller 114 and upper forming roller 116 are in Fig. 6 shown in more detail. When the preheated and preformed heat distribution plate blank 104 is passed between the two forming rollers 114, 116, a heat distribution plate 1 is formed, which includes a central groove 2 arranged to receive a heat source from a wet or dry heating system. To align the groove 2 in the center of the heat distribution plate 1, the lower and / or upper forming roller(s) 114, 116 may include outer guide rails 118 arranged to center the heat distribution plate blank 104 during the forming of the heat distribution plate 1. Fig. 6 includes only the lower forming roller 114 and the outer guide rails 118. When using a heat distribution plate blank 104 which includes a nonwoven layer, the central forming projection 116a of the upper forming roller 116 can be arranged at a distance d of 60-90 mm from the central forming recess 114a of the lower forming roller 114.

[0064] With renewed reference to Fig. 5 The device 100 finally includes a cutting arrangement 120, which is arranged to cut the heat distribution plate 1 to a desired length into a storage container 122 for further packaging.

[0065] The temperature in the preheating furnace 102 is between 100 °C and 200 °C, and the temperature in the preforming furnace 108 is between 120 °C and 170 °C. The preheating furnace 102 and / or the preforming furnace 108 may also include guide rails to ensure that the heat distribution plate blank 104 is properly centered during the process. The preheating furnace 102 and / or the preforming furnace 108 may also include one or more fans (not shown) to ensure that the heat is uniform in the respective furnaces. The preheating furnace 102 and the preforming furnace 108 are made of any suitable material that can withstand the specified temperatures and include openings connected in such a way that the heat distribution plate blank 104 can pass between them.

[0066] Additionally, the heat distribution plate blank 104 can be preheated before it enters the preheating furnace 102.

[0067] Fig. Figure 7 schematically shows a flowchart of a method 700 for manufacturing a heat distribution plate 1 according to a fourth aspect of the invention. The method 700 comprises the following steps: - S702: Providing a heat distribution plate blank 104 comprising a laminate, wherein a first layer comprises graphite, - S704: Feeding the heat distribution plate blank 104 through a preheating furnace 102, - S706: Advancement of the preheated heat distribution plate blank 104 through a preforming furnace 108, in which a guide arrangement 110 presses down a central part of the heat distribution plate blank 104, - S708: Advancement of the preheated and preformed heat distribution plate blank 104 through a pair of forming rollers 114, 116, forming the heat distribution plate 1, which includes a central groove 2 arranged to receive a heat source from a wet or dry heating system, - S710: Cutting the heat distribution plate 1 to a desired length.

[0068] In the entirety of the description and claims of this document, the expressions "comprise" and "contain" and variations thereof mean "including, among other things," and are not intended to exclude (and do not exclude) any other components, whole numbers, or steps. In the entirety of the description and claims of this document, the singular includes the plural unless the context indicates otherwise. In particular, when the indefinite article is used, the document is to be understood as including both the singular and the plural unless the context indicates otherwise.

[0069] Features, integers, properties, or groups described in connection with a specific aspect, embodiment, or example of the invention are to be understood as applicable to any other aspect, embodiment, or example described in this document, unless they are incompatible with it. All features disclosed in this document (including any appended claims, abstract, and drawings) and / or all steps of any method or process disclosed therein may be combined in any combination, except for combinations in which at least some of these features and / or steps are mutually exclusive. The invention is not limited to the details of any of the foregoing embodiments.

[0070] The invention extends to any novel feature disclosed in this document (including any attached claims, abstract and drawings) or any novel combination thereof, or to any novel step of any such disclosed method or process, or any novel combination thereof. Reference symbol: 1 heat distribution plate 2 longitudinal groove 3 lips 4 pipe 10 Underfloor heating arrangement 11 First soil layer 12 Second soil layer 13 Third soil layer 14 Fourth soil layer 15 Heat distribution arrangement 16 Intermediate shift 20 In-depth study 100 facilities 102 Preheater oven 104 Heat distribution plate blank 106 rolls 108 Preforming furnace 110 Leadership order 112 Forming arrangement 114 Lower forming roller 114a Central forming depression 116 Upper forming roller 116a Central shaping projection 118 Outer guide rails 120 cutting arrangement 122 storage containers

Claims

[1] Heat distribution plate (1), wherein the heat distribution plate (1) comprises a groove arranged to receive a wire or pipe (4) from a heating system to provide heating and / or cooling, characterized by that the heat distribution plate (1) is a laminated mat, wherein a first layer comprises graphite. [2] The heat spreader plate (1) according to claim 1, wherein the heat spreader plate (1) comprises a second layer comprising a thermoplastic nonwoven fabric mixed with an adhesive, an aluminum foil, or a copper foil. [3] Heat distribution plate (1) according to claim 2, wherein the amount of adhesive in the second nonwoven layer is between 20 and 40% by weight. [4] Underfloor heating arrangement comprising a heat distribution plate (1) according to one of claims 1-3. [5] Underfloor heating arrangement (10) according to claim 4, wherein the heat distribution plate (1) is arranged under pipes of a wet underfloor heating system or under the cables of a dry underfloor heating system and at least partially encloses the wire or a pipe (4) from the underfloor heating system. [6] Underfloor heating arrangement (10) according to claim 4 or 5, wherein the underfloor heating arrangement (10) further comprises a heat distribution arrangement (15) partially or completely comprising graphite. [7] Wall heating arrangement comprising a heat distribution plate (1) according to one of claims 1-3. [8] Ceiling heating arrangement comprising a heat distribution plate (1) according to one of claims 1-3. [9] Device (100) for forming a heat distribution plate (1), the device (100) comprising: - a preheater furnace (102) arranged to preheat a heat distribution plate blank (104), - a preforming furnace (108) comprising a guide assembly (110) wherein a central portion of the preheated heat distribution plate blank (104) is pressed down, - a forming assembly (112) comprising two forming rollers (114, 116), wherein a lower forming roller (114) comprises a central forming recess and wherein an upper forming roller (116) comprises a central forming projection (116a) arranged to fit into the central forming recess (114a) of the lower forming roller (114), wherein, when the preheated and preformed heat spreader plate blank (104) is passed between the two forming rollers (114, 116), a heat spreader plate (1) is formed which comprises a central groove (2) arranged to receive a heat source from a wet or dry underfloor heating system, - a cutting arrangement (120) arranged to cut the heat distribution plate (1) to a desired length. [10] The device (100) of claim 9, wherein the temperature in the preheater furnace (102) is between 100°C and 200°C and the temperature of the preforming furnace (108) is between 120°C and 170°C. [11] Device (100) according to claim 9 or 10, wherein the central forming projection (116a) of the upper forming roller (116) is arranged at a distance of 60-90 mm from the central forming recess (114a) of the lower forming roller (114). [12] Device (100) according to one of claims 9-11, wherein the upper and / or lower forming roller (114, 116) comprises / comprises outer guide rails (122) arranged to center the heat spreader plate blank (104) during forming of the heat spreader plate (1). [13] A method for producing a heat distribution plate (1), the method comprising the following steps: - Providing a heat spreader plate blank (104) comprising a laminate, wherein a first layer comprises graphite, - advancing the heat distribution plate blank (104) through a preheater furnace (102), - advancing the preheated heat distribution plate blank (104) through a preforming furnace (108) in which a guide arrangement (110) presses down a central part of the heat distribution plate blank (104), - advancing the preheated and preformed heat distribution plate blank (104) through a pair of forming rollers (114, 116) forming the heat distribution plate (1) comprising a central groove (2) arranged to receive a heat source from a wet or dry heating system, - Cutting the heat distribution plate (1) to the desired length.

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