Electrically heated composite floor

Abstract

The utility model relates to floor technology field discloses an electric heating composite floor, including from top to bottom setting surface phenolic pre -impregnated cloth laminated board, heating film, light core steel and bottom surface phenolic pre -impregnated cloth laminated board, the heating film includes insulating base, electric heating layer and electrode bus, the electric heating layer is printed on the insulating base, and the electrode bus is provided with on the both sides of electric heating layer, the electric heating composite floor of the utility model reduces the area of graphene, reduces the power consumption of heating film, and heating is more uniform, can effectively prevent moisture penetration to the floor simultaneously, prevents the moisture influence the service performance and life of floor, and prevents the security hidden danger of fire caused by current leakage or short circuit, improves the use safety of the heating floor.

Description

Technical Field

[0001] This utility model relates to the field of flooring technology, and in particular to an electrically heated composite floor. Background Technology

[0002] As people's demands for quality of life continue to rise, electric heated floors are increasingly widely used in indoor heating. Currently, the most common types of electric heated floors on the market include heating wire heated floors and graphene film heated floors. Heating wire heated floors heat the floor by laying heating wires and using electric current passing through resistance to generate heat; graphene film heated floors, on the other hand, utilize graphene's excellent electrical and thermal conductivity to efficiently convert electrical energy into heat energy.

[0003] However, existing electric floor heating systems still have many shortcomings. For floor heating systems using sheet-like graphene films, the large area of ​​graphene film used results in high overall power consumption, increasing operating costs. Furthermore, during heating, the sheet-like graphene film is prone to localized heat concentration, affecting heating uniformity and user experience. Floor heating systems using electric heating wires suffer from uneven wire distribution and susceptibility to aging and breakage, which not only reduces heating efficiency but also poses safety hazards such as leakage and short circuits.

[0004] Therefore, there is an urgent need to provide an electric heating floor that is low in power consumption, provides uniform heating, and is highly safe. Utility Model Content

[0005] The main purpose of this utility model is to propose an electric heating composite floor, which aims to solve the technical problems of high power consumption, uneven heating, or safety issues of existing electric heating floors.

[0006] To achieve the above objectives, this utility model provides an electrically heated composite floor, characterized in that it comprises, from top to bottom, a surface phenolic prepreg laminate, a heating film, a lightweight steel core, and a bottom phenolic prepreg laminate.

[0007] The heating film includes an insulating substrate, an electric heating layer, and an electrode busbar; the electric heating layer is printed on the insulating substrate, and the electrode busbars are provided on both sides of the electric heating layer.

[0008] Preferably, the insulating substrate has an array of holes distributed in an array manner, and several parallel heating lines are printed around the array holes in the same direction to form the electric heating layer.

[0009] Preferably, one end of the electrode busbar has a circuit interface.

[0010] Preferably, the heating wire is made of any one of graphene, graphite powder, and carbon nanotubes.

[0011] Preferably, the insulating substrate is made of polyethylene terephthalate.

[0012] Preferably, the heating film is divided into several heating temperature zones, and adjacent heating temperature zones are isolated by an insulating film; each heating temperature zone includes: a heating unit composed of several heating wires and a pair of electrode busbars disposed on both sides of the heating unit.

[0013] Preferably, the thickness of the surface phenolic prepreg laminate is 1.4 mm to 1.8 mm; and the thickness of the bottom phenolic prepreg laminate is 0.8 mm to 1.2 mm.

[0014] Preferably, the thickness of the heating film is 0.1 mm to 0.3 mm.

[0015] Preferably, the thickness of the lightweight core steel is 13mm to 17mm.

[0016] Preferably, the surface phenolic prepreg laminate, the heating film, the lightweight steel core, and the bottom phenolic prepreg laminate are bonded together with thermally conductive epoxy adhesive.

[0017] In this embodiment, the electrically heated composite floor uses an insulating material as the substrate for its heating film. Multiple graphene heating lines are printed on the substrate to form an electric heating layer. Compared to a sheet of graphene film, this reduces the area of ​​graphene without affecting the heating effect, thus lowering the power consumption of the heating film. The surface and bottom of the electrically heated composite floor use phenolic prepreg laminate, which can effectively prevent moisture from penetrating into the floor and prevent moisture from affecting the floor's performance and lifespan. At the same time, it can prevent fire hazards caused by current leakage or short circuits, thus improving the safety of the heated floor. Attached Figure Description

[0018] Figure 1 This is a structural block diagram of an electrically heated composite floor in one embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the heating film structure of the electrically heated composite floor in one embodiment of the present invention. Figure 1 ;

[0020] Figure 3 This is a schematic diagram of the heating film structure of the electrically heated composite floor in one embodiment of the present invention. Figure 2 ;

[0021] Figure 4 This is an exploded schematic diagram of the heating film of the electrically heated composite floor in one embodiment of the present invention.

[0022] The serial numbers in the diagram are explained as follows:

[0023] 1. Surface phenolic prepreg laminate; 2. Heating film; 201. Insulating substrate; 2011. Array holes; 202. Electric heating layer; 2021. Heating wire; 203. Electrode busbar; 204. Circuit interface; 205. Heating temperature zone; 206. Insulating film; 3. Lightweight steel core; 4. Bottom phenolic prepreg laminate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] refer to Figure 1 and Figure 2 This is a schematic diagram of the structure of the electrically heated composite floor provided in this embodiment of the utility model. The electrically heated composite floor includes, from top to bottom, a surface phenolic prepreg laminate 1, a heating film 2, a lightweight steel core 3, and a bottom phenolic prepreg laminate 4. The heating film 2 includes an insulating substrate 201, an electrically heated layer 202, and an electrode busbar 203. The electrically heated layer 202 is printed on the insulating substrate 201, and the electrode busbars 203 are provided on both sides of the electrically heated layer 202. The size of the electrically heated layer 202 is smaller than the size of the insulating substrate 201.

[0026] Understandably, in this embodiment of the electrically heated composite flooring, the first layer is a surface phenolic prepreg laminate 1, which is made by hot-pressing multiple sheets of phenolic prepreg fabric. The phenolic prepreg fabric is obtained by impregnating fiber cloth (such as glass fiber cloth or carbon fiber cloth) with phenolic resin, followed by drying and pre-curing. The thickness of the surface phenolic prepreg laminate 1 is 1.4mm to 1.8mm, preferably 1.6mm. This surface phenolic prepreg laminate 1 gives the flooring surface good abrasion resistance, corrosion resistance, and insulation properties.

[0027] The second layer is a heating film 2, which mainly consists of an insulating substrate 201, an electric heating layer 202, and electrode busbars 203. The electric heating layer 202 is a horizontally strip-shaped heating film, which is screen-printed onto the insulating substrate 201. Two parallel electrode busbars 203 are arranged on the upper sides of the electric heating layer 202 for connecting to an external power source. The thickness of the heating film 2 is 0.1–0.3 mm, preferably 0.2 mm. The insulating substrate 201 is made of polyethylene terephthalate (PET) or polyimide (PI), preferably polyethylene terephthalate. The electric heating layer 202 is made of any one of graphene, graphite powder, and carbon nanotubes, preferably graphene. The electrode busbars 203 are made of conductive silver paste or metal nanowires, preferably copper nanowires. The heating film 2 is connected to an external power source through the electrode busbar 203, which introduces current into the electric heating layer 202, and then the electric heating layer 202 converts electrical energy into heat to achieve the floor heating function.

[0028] The third layer is lightweight steel 3, which has a certain strength and rigidity, providing stable structural support for the floor. It also has good thermal conductivity, enabling it to quickly transfer the heat generated by the heating film 2 to the floor surface through thermal radiation. Lightweight steel 3 is phenolic lightweight steel, which is a composite board with steel plate as the surface material and phenolic foam as the core material. The thickness of lightweight steel 3 is 13mm to 17mm, preferably 15mm.

[0029] The fourth layer is a bottom phenolic prepreg laminate 4, which has the same structure as the top phenolic prepreg laminate 1, and is also made by hot-pressing multiple sheets of phenolic prepreg fabric. The thickness of the bottom phenolic prepreg laminate 4 is 0.8mm to 1.2mm, preferably 1.0mm. This bottom phenolic prepreg laminate 4 can protect the bottom of the floor, preventing moisture and water vapor from the ground from penetrating into the floor and avoiding damage to other layers, such as corrosion of the lightweight steel core or affecting the performance of the heating film.

[0030] Furthermore, the surface phenolic prepreg laminate 1, the heating film 2, the lightweight steel core 3, and the bottom phenolic prepreg laminate 4 are bonded together using thermally conductive epoxy adhesive. That is, the electrically heated composite flooring of this embodiment is formed by hot pressing after bonding with thermally conductive epoxy adhesive. The thermally conductive epoxy adhesive is made of temperature-resistant and aging-resistant materials. This adhesive can firmly bond the various layers of the flooring together, ensuring the stability of the flooring, and also has good insulation properties, preventing current leakage and improving the safety performance of the flooring.

[0031] Furthermore, the electrically heated composite floor also includes an edge banding panel, which is laminated to the outer edge of the overall structure. This edge banding panel can be made of aluminum alloy profiles.

[0032] In summary, the heating film 2 of the electrically heated composite floor in this embodiment uses an insulating material as the substrate, and multiple graphene heating lines are printed on the substrate to form an electrically heated layer 202. Compared with a sheet of graphene film, the area of ​​graphene is reduced without affecting the heating effect, thus reducing the power consumption of the heating film 2. The surface and bottom of the electrically heated composite floor are made of phenolic prepreg laminate, which can effectively prevent moisture from penetrating into the floor and prevent moisture from affecting the performance and lifespan of the floor. At the same time, it can prevent the safety hazard of fire caused by current leakage or short circuit, thus improving the safety of the heated floor.

[0033] In a preferred embodiment, reference Figure 3 and Figure 4 The insulating substrate 201 has array holes 2011 arranged in an array pattern, and several parallel heating lines 2021 are printed around the array holes 2011 in the same direction to form the electric heating layer 202.

[0034] In this embodiment, the array aperture 2011 is circular in shape, and the heating wire 2021 is a graphene heating wire.

[0035] At this time, in the heating film 2, a circular array of holes is arranged in a matrix on its insulating substrate 201. Around the circular array holes, several spaced graphene heating lines are printed along the length of the floor using screen printing technology. These graphene heating lines constitute the electric heating layer 202. The number of rows N and columns M of the array holes 2011 are set according to the size of the floor or heating zone 205. The number of heating lines 2021 is N-1, where N is the number of rows of the array holes 2011. The aperture of the array holes 2011 is 10mm to 20mm. The width of the heating lines 2021 is set according to the maximum operating temperature; the wider the width, the higher the upper limit of the maximum operating temperature. A certain safe distance is maintained between the upper / lower edges of the array holes 2011 and the heating lines 2021.

[0036] In summary, by creating array holes 2011 on the insulating substrate 201, the heating film 2 can be made into a porous heating film, which can improve the adhesion between the heating film and the upper and lower layers. At the same time, semiconductor materials such as graphene and graphite carbon are printed around the array holes 2011 by screen printing to form an electric heating layer 202. Compared with a sheet of graphene film, the heating is more uniform and the heating film 2 is thinner.

[0037] Furthermore, a circuit interface 204 is led out from one side of the electrode bus 203.

[0038] In this embodiment, the heating film 2 includes two types of electrode busbars 203, namely a positive busbar and a negative busbar. A circuit interface 204 is led out from one side of both the positive and negative busbars. The circuit interface 204 is used to connect to an external power supply or an existing temperature control system.

[0039] In summary, this embodiment can achieve intelligent regulation of floor power supply and floor temperature by setting the circuit interface 204.

[0040] In a preferred embodiment, reference Figure 3 and Figure 4 The heating film 2 is divided into several heating temperature zones 205, and two adjacent heating temperature zones 205 are isolated by an insulating film 206. Each heating temperature zone 205 includes a heating unit composed of several heating wires 2021 and a pair of electrode busbars 203 disposed on both sides of the heating unit.

[0041] In this embodiment, the heating film 2 is divided into multiple independent heating temperature zones 205. An insulating film 206 is disposed around the heating temperature zone 205. An opening is provided on one side of the insulating film 206 corresponding to the position of the circuit interface 204. The thickness of the insulating film 206 is the same as the thickness of the electrode busbar 203. The insulating film 206 can be made of polyimide film. Each heating temperature zone 205 includes several graphene heating lines parallel to the length direction of the floor and two electrode busbars 203. The two electrode busbars 203 can be coated on the upper sides of the graphene heating lines.

[0042] In summary, the heating film 2 of this embodiment can achieve zoned heating by setting multiple heating temperature zones 205; by setting an insulating film 206 around the electric heating layer 202, the risk of leakage of electricity on the side of the floor can be avoided, thus improving the safety of the floor.

[0043] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. An electrically heated composite floor, characterized in that, It includes, from top to bottom, a surface phenolic prepreg laminate, a heating film, a lightweight steel core, and a bottom phenolic prepreg laminate; The heating film includes an insulating substrate, an electric heating layer, and an electrode busbar; the electric heating layer is printed on the insulating substrate, and the electrode busbars are provided on both sides of the electric heating layer.

2. The electrically heated composite flooring as described in claim 1, characterized in that, The insulating substrate has an array of holes distributed in an array manner, and several parallel heating lines are printed around the array holes in the same direction to form the electric heating layer.

3. The electrically heated composite flooring as described in claim 2, characterized in that, One end of the electrode busbar has a circuit interface.

4. The electrically heated composite flooring as described in claim 2, characterized in that, The heating wire is made of any one of graphene, graphite powder, and carbon nanotubes.

5. The electrically heated composite flooring as described in claim 2, characterized in that, The insulating substrate is made of polyethylene terephthalate.

6. The electrically heated composite flooring as described in claim 2, characterized in that, The heating film is divided into several heating temperature zones, and adjacent heating temperature zones are isolated by an insulating film; each heating temperature zone includes: a heating unit composed of several heating wires and a pair of electrode busbars disposed on both sides of the heating unit.

7. The electrically heated composite flooring as described in claim 1, characterized in that, The thickness of the surface phenolic prepreg laminate is 1.4mm to 1.8mm; the thickness of the bottom phenolic prepreg laminate is 0.8mm to 1.2mm.

8. The electrically heated composite flooring as described in claim 7, characterized in that, The thickness of the heating film is 0.1 mm to 0.3 mm.

9. The electrically heated composite flooring as described in claim 8, characterized in that, The thickness of the lightweight core steel is 13mm to 17mm.

10. The electrically heated composite flooring as described in claim 1, characterized in that, The surface phenolic prepreg laminate, the heating film, the lightweight steel core, and the bottom phenolic prepreg laminate are bonded together with thermally conductive epoxy adhesive.

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