Graphene Heater

Abstract

To provide a graphene heater that combines a convection heating element and a radiation heating element, and that can conduct heat through convection while also emitting relatively strong infrared radiation. [Solution] The graphene heater includes a thermal conductor and / or a heating element. In a first embodiment, the thermal conductor is an electric conductor arranged on both ends of a ceramic heating sheet and a heat dissipation sheet arranged between the electric conductors, and the surfaces of the electric conductor and the heat dissipation sheet facing the heating port are provided with a graphene coating. In a second embodiment, the heating element is an electric heating wire wound around a mica sheet, and the outer surface of the electric heating wire is provided with a graphene coating. In a third embodiment, the heating element is an infrared heating tube, and the infrared heating tube includes a high-temperature resistant glass tube, and the outer surface of the high-temperature resistant glass tube is provided with a graphene coating. In a fourth embodiment, the thermal conductor is a heat dissipation fin, and the heating element is an electric heating tube.

Description

[Technical field]

[0001] The present invention relates to the field of heater technology, and more particularly to a heater using graphene technology. [Background technology]

[0002] Conventional convection heaters mainly realize heat transfer through air convection, so the strength of the convection affects the heating experience of users: a heater with a weak convection effect has a high temperature around the heater and a low temperature at a distance from the heater, while a heater with a strong convection effect has a high temperature in the convection area and a low temperature in other areas, and none of the convection heaters has the advantages of fast heating speed and good comfort of a radiant heater. Summary of the Invention [Problem to be solved by the invention]

[0003] The present invention enhances the infrared radiation intensity of the thermal conductor or heating element by providing a graphene coating on the surface of the thermal conductor or heating element, so that the thermal conductor or heating element combines the advantages of convection heating element and radiation heating element, and while conducting heat through convection, the infrared radiation intensity is relatively strong. [Means for solving the problem]

[0004] To solve the above technical problems, the present invention provides a graphene coating on the surface of the heat conductor or heat generator.

[0005] In a first embodiment, the heat conductor is an electric conductor arranged on both ends of a ceramic heat generating sheet, and a heat dissipation sheet arranged between the electric conductors.

[0006] The surfaces of the conductor and the heat dissipation sheet facing the heat outlet are provided with a graphene coating.

[0007] In a second embodiment, the heating element is a heating wire wrapped around a mica sheet.

[0008] Furthermore, the cross-sectional shape of the heating wire is elongated.

[0009] Furthermore, the long side of the cross section of the heating wire is arranged perpendicular to the heating port, and the short side is arranged parallel to the heating port.

[0010] In a third embodiment, the heating element is an infrared heating tube.

[0011] The infrared heating tube includes a high-temperature resistant glass tube, and a graphene coating is provided on the outer surface of the high-temperature resistant glass tube.

[0012] In a fourth embodiment, the heat conductor is a heat sink fin, the heat generating element is a heat pipe, and a metal case is provided on the outside of the heat sink fin and the heat pipe.

[0013] Furthermore, a radiation hole is provided on the front plate of the metal housing.

[0014] Furthermore, a radiation plate is provided at one end of the heat dissipation fin.

[0015] Furthermore, the surface of the radiation plate facing the radiation hole is provided with a graphene coating.

[0016] Preferably, the radiation plate is arranged parallel to the radiation hole.

[0017] Furthermore, the electric heating tube includes a first heating tube and a second heating tube.

[0018] Preferably, the second heating tube is disposed perpendicular to the first heating tube.

[0019] Preferably, the electric heating tube is disposed near the radiation hole. [Brief description of the drawings]

[0020] [Figure 1] FIG. 1 is a schematic diagram of a graphene PTC heater according to a first embodiment of the present invention. [Diagram 2] 1 is a schematic diagram of a graphene PTC heating element according to a first embodiment of the present invention; [Diagram 3] FIG. 2 is a cross-sectional view taken along line AA of the graphene PTC heating element according to the first embodiment of the present invention. [Figure 4] 2 is a schematic diagram of a graphene heating wire heater according to a second embodiment of the present invention; [Diagram 5] 2 is a schematic diagram of a graphene heating wire heating element according to a second embodiment of the present invention; [Figure 6] FIG. 2 is a cross-sectional view taken along the line AA of the graphene heating wire heating element according to the second embodiment of the present invention. [Figure 7] 2 is a schematic cross-sectional view of a graphene heating wire heater according to a second embodiment of the present invention; [Figure 8] 3 is a schematic diagram of a graphene infrared heater according to a third embodiment of the present invention; [Figure 9] 3 is a schematic diagram of a graphene infrared heating tube according to a third embodiment of the present invention; [Figure 10] FIG. 2 is a cross-sectional view taken along the line AA of the graphene infrared heating tube according to the third embodiment of the present invention. [Figure 11] FIG. 4 is a schematic diagram of a graphene baseboard heater according to a fourth embodiment of the present invention. [Figure 12] 4 is a schematic diagram of a graphene heating tube according to a fourth embodiment of the present invention; [Figure 13] FIG. 2 is a cross-sectional view taken along the line AA of the graphene heating tube according to the fourth embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] In order to enable those skilled in the art to better understand and practice the present invention, the present invention will be further described below in conjunction with the drawings and specific examples, which should not be construed as limiting the present invention.

[0022] In describing the present invention, it is to be understood that the orientations or positional relationships indicated by the terms "vertical," "parallel," "inside," and "outside" are based on the orientations or positional relationships shown in the drawings and are used to explain and simplify the description of the present invention, and do not indicate or imply that the device or part has a particular orientation or is configured and must operate in a particular orientation, and should not be understood as limiting the present invention.

[0023] Additionally, the terms "first" and "second" are used for descriptive purposes and are not understood to indicate or imply a relative importance or number of technical features. Thus, the features qualifying "first" and "second" may explicitly or implicitly include one or more features.

[0024] As shown in Figures 1 to 3, the first embodiment of the graphene heater of the present invention includes a thermal conductor 1, which is a conductor 11 arranged on both ends of a ceramic heating sheet 20 and a heat dissipation sheet 12 arranged between the conductors, and a graphene coating 3 is provided on the surfaces of the conductor 11 and the heat dissipation sheet 12 facing the heating port.

[0025] As shown in FIGS. 4 to 7 , the second embodiment of the graphene heater of the present invention includes a heating element 2, the heating element 2 being a heating wire 21 wound around a mica sheet 4, the heating wire 21 having an oblong cross-sectional shape, and a graphene coating 3 provided on the outer surface of the heating wire 21, with a long side 211 of the cross-section of the heating wire 21 arranged perpendicular to the heating port 5 and a short side 212 arranged parallel to the heating port 5.

[0026] The graphene coating 3 of the first and second embodiments radiates infrared rays to the outside through the heating port 5 of the heater.

[0027] As shown in Figures 8 to 10, the third embodiment of the graphene heater of the present invention includes a heating element 2, the heating element 2 is an infrared heating tube 22, the infrared heating tube 22 includes a high-temperature resistant glass tube 221, and a graphene coating 3 is provided on the outer surface of the high-temperature resistant glass tube 221.

[0028] The graphene coating 3 of the third embodiment radiates infrared rays to the outside through the radiation port 6 of the heater.

[0029] As shown in Figures 11 to 13, the fourth embodiment of the graphene heater of the present invention includes a thermal conductor 1 and a heating element 2, the thermal conductor 1 is a heat dissipation fin 13, the heating element 2 is an electric heating tube 23, a metal housing 14 is provided on the outside of the heat dissipation fin 13 and the electric heating tube 23, a radiation hole 141 is provided on the front panel 140 of the metal housing 14, a radiation plate 131 is provided on one end of the heat dissipation fin 13, and a graphene coating 3 is provided on the surface of the radiation plate 131 facing the radiation hole 141, the electric heating tube 23 includes a first heating tube 231 and a second heating tube 232, the second heating tube 232 is arranged perpendicular to the first heating tube 231, and the electric heating tube 23 is arranged near the radiation hole 141.

[0030] The graphene coating 3 on the radiation plate 131 of the fourth embodiment radiates infrared rays to the outside through the radiation holes 141 .

[0031] A thermal imager, model number HM-TPK10-3AQF / W, is used to compare and test the surface temperatures of heat conductors or heat generating bodies.

[0032] In the first embodiment, the maximum temperature of the conductor and heat dissipation sheet without graphene was 208.3°C, and the maximum temperature of the conductor and heat dissipation sheet with graphene was 241.6°C. Calculations based on the Stefan-Boltzmann law and the emissivity of the material in the normal direction showed that the emissivity of the graphene-coated heating sheet and heat dissipation sheet in the infrared wavelength range increased by 1127.9%.

[0033] In the second embodiment, the maximum temperature of the heating wire without graphene coating was 227.4°C, and the maximum temperature of the heating wire with graphene coating was 420°C. According to the Stefan-Boltzmann law and the emissivity of the material in the normal direction, the emissivity of the graphene-coated heating wire in the infrared wavelength range increased by 1507.7%.

[0034] In the third embodiment, the maximum temperature of the infrared heating tube without graphene coating was 335.8°C, and the maximum temperature of the infrared heating tube with graphene coating was 395.5°C. Calculated based on the Stefan-Boltzmann law and the emissivity of the material in the normal direction, the emissivity of the graphene-coated infrared heating tube in the infrared wavelength range increased by 25.8%.

[0035] In the fourth embodiment, the maximum temperature of the heat dissipation fin without graphene coating was 326.1°C, and the maximum temperature of the heat dissipation fin with graphene coating was 360.5°C. Calculated based on the Stefan-Boltzmann law and the emissivity of the material in the normal direction, the emissivity of the graphene-coated heat dissipation fin in the infrared wavelength range increased by 1114.3%.

[0036] The above embodiments are preferred embodiments given to illustrate the present invention in detail, and do not limit the scope of protection of the present invention. Those skilled in the art will recognize that any equivalent replacement or conversion made based on the present invention falls within the scope of protection of the present invention. The scope of protection of the present invention is defined by the claims. [Explanation of symbols]

[0037] 1: heat conductor, 11: electric conductor, 12: heat dissipation sheet, 13: heat dissipation fin, 131: radiation plate, 14: metal housing, 140: front panel, 141: radiation hole, 2: heating element, 20: ceramic heating sheet, 21: heating wire, 211: long side of cross section, 212: short side of cross section, 22: infrared heating tube, 221: high temperature resistant glass tube, 23: heating tube, 231: first heating tube, 232: second heating tube, 3: graphene coating, 4: mica sheet, 5: heating outlet, 6: radiation outlet

Claims

1. A graphene heater, The graphene heater comprises a heat conductor (1) and / or a heating element (2).

2. The thermal conductor (1) is a conductor (11) provided on both ends of a ceramic heat generating sheet (20) and a heat dissipation sheet (12) disposed between the conductors (11), The graphene heater according to claim 1, wherein the surfaces of the conductor (11) and the heat dissipation sheet (12) facing the heat outlet (5) are provided with a graphene coating (3).

3. The heating element (2) is an electric heating wire (21) wound around a mica sheet (4), The cross-sectional shape of the heating wire (21) is an oblong shape, The graphene heater according to claim 1, wherein the surface of the heating wire (21) is provided with a graphene coating (3).

4. The long side (211) of the cross section of the heating wire (21) is arranged perpendicular to the heating port (5), The graphene heater according to claim 3, wherein the short side (212) is arranged parallel to the heating outlet (5).

5. The heating element (2) is an infrared heating tube (22), The infrared heating tube (22) includes a high-temperature resistant glass tube (221); The graphene heater according to claim 1, wherein the outer surface of the high-temperature resistant glass tube (221) is provided with a graphene coating (3).

6. The heat conductor (1) is a heat dissipation fin (13), The heating element (2) is an electric heating tube (23), A metal case (14) is provided on the outside of the heat dissipation fins (13) and the electric heating tube (23), The graphene heater according to claim 1 , wherein the front plate (140) of the metal housing (14) is provided with a radiation hole (141).

7. A radiation plate (131) is provided at one end of the heat dissipation fin (13), The graphene heater according to claim 6, wherein the surface of the radiation plate (131) facing the radiation hole (141) is provided with a graphene coating (3).

8. The graphene heater according to claim 7, wherein the radiation plate (131) is arranged parallel to the radiation hole (141).

9. The electric heating tube (23) includes a first heating tube (231) and a second heating tube (232), The graphene heater according to claim 8, wherein the second heating tube (232) is arranged perpendicular to the first heating tube (231).

10. The graphene heater according to claim 9, wherein the electric heating tube (23) is disposed near the radiation hole (141).

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