阅读说明：本技术 石墨烯加热电取暖器及其制备方法 (Graphene heating electric warmer and preparation method thereof ) 是由 王宁 潘卓成 潘智军 谭化兵 于 2021-08-11 设计创作，主要内容包括：本发明提供石墨烯加热电取暖器,包括外壳、发热体、温度控制器和底座,所述外壳上设置有多个开孔,所述发热体包括石墨烯发热片,所述发热体安装在外壳内,所述温度控制器用于控制发热体的加热温度,所述温度控制器安装在底座上。本发明还提供制备方法。本发明将温度控制器放置在底座,为外壳提供更多开孔空间,增大散热面积,减小取暖器体积。(The invention provides a graphene heating electric warmer which comprises a shell, a heating body, a temperature controller and a base, wherein a plurality of holes are formed in the shell, the heating body comprises a graphene heating sheet, the heating body is installed in the shell, the temperature controller is used for controlling the heating temperature of the heating body, and the temperature controller is installed on the base. The invention also provides a preparation method. The temperature controller is arranged on the base, so that more opening spaces are provided for the shell, the heat dissipation area is increased, and the volume of the warmer is reduced.)

1. The utility model provides a graphite alkene heating electric warmer, its characterized in that, includes shell, heat-generating body, temperature controller and base, be provided with a plurality of trompils on the shell, the heat-generating body includes graphite alkene piece that generates heat, the heat-generating body is installed in the shell, temperature controller is used for controlling the heating temperature of heat-generating body, temperature controller installs on the base.

2. The graphene heated electric warmer of claim 1, wherein the housing comprises a plurality of pieces of profile, preferably the housing has a maximum length of 3000mm, a maximum width of 2500mm, and a maximum height of 500mm, further preferably the housing has a length of 1200mm, a width of 800mm, a height of 40mm, and a material thickness of 3mm, preferably the housing comprises four pieces of profile, further preferably two pieces of profile have a length of 1200mm, a height of 40mm, and a thickness of 3mm, and the other two pieces of profile have a width of 800mm, a height of 40mm, and a thickness of 3mm, preferably the profile is aluminum profile; preferably, the shell comprises two pieces of tempered glass, and further preferably, the tempered glass has a length of 1200mm, a width of 800mm and a maximum thickness of 40 mm; preferably, the inner surface of the toughened glass is coated with a heat-resistant layer and a reflecting layer, and the reflecting layer is positioned on the heat-resistant layer; preferably, the surface of the profile is sprayed with paint, preferably, the paint is nitro primer or alkyd primer, and further preferably, alkyd primer; preferably, the surface of the profile is sprayed with 1-10 layers of paint, preferably 5 layers; preferably, the surface of the section is subjected to chromate oxidation, and the surface after chromate oxidation is sprayed with paint.

3. The graphene-heated electric warmer according to claim 2, wherein the housing is a cuboid or a cube, and a plurality of first openings are provided on at least three faces, preferably the first openings on one face are arranged in an array, preferably the first openings are rectangular, further preferably the first openings have a length of 10mm and a width of 30 mm;

preferably, at least one other surface of the housing, on which the first opening is not formed, is provided with a plurality of second openings for passing through a connection line between the heating element and the temperature controller, preferably, the second openings are circular, and further preferably, the maximum diameter of the second openings is 40mm, preferably 15 mm.

4. The graphene-heated electric warmer according to claim 1, wherein the heating element comprises a graphene mica heating sheet, the graphene mica heating sheet comprises a graphene heating sheet and a flame-retardant mica sheet, and the flame-retardant mica sheet is bonded on the outer side surface of the graphene heating sheet;

preferably, the graphene mica heating sheet further comprises a PET film, and the PET film is bonded on the outer side surface of the flame-retardant mica sheet;

preferably, the heating body comprises a plurality of graphene mica heating sheets which are connected in parallel, and preferably, the heating body further comprises a clamping groove which is in a bow shape or a concave-convex shape and used for mounting the plurality of graphene mica heating sheets;

preferably, the temperature controller controls the number of conducting pieces of the graphene mica heating pieces to realize heating of different temperature gears, and preferably, the gears include a first gear and a second gear, the heating temperature of the first gear is 50 ℃, the power is 1100W, the heating temperature of the second gear is 100 ℃, and the power is 2200W.

5. The graphene-heated electric warmer according to claim 1, further comprising a temperature sensor, adhered to the heating element, electrically connected to the temperature controller, for measuring the temperature of the heating element, preferably the temperature sensor is an NTC temperature sensor, further preferably the NTC temperature sensor has a resistance of 10K Ω and a B value of 3950K;

preferably, the heat radiator is used for radiating heat when the temperature inside the shell is too high;

preferably, the mobile phone further comprises at least one display screen, the display screen is mounted on the base, preferably, the display screen is a touch display screen, and preferably, the mobile phone further comprises two display screens, and the two display screens are respectively arranged in front of and behind the base.

6. The graphene-heated electric warmer according to claim 1, wherein the base is made of tempered glass, preferably, the inner surface of the base is coated with a heat-resistant layer, preferably, the base is in a quadrangular prism shape with trapezoidal side surfaces, further preferably, the base has a maximum shape length of 1200mm, a bottom surface width of 100 mm and 300mm, a thickness of 5-10mm, and an angle between a bottom edge and a bevel edge of 45-80 °.

7. A preparation method of a graphene heating electric warmer is characterized by comprising the following steps:

preparing a shell, and arranging a plurality of open holes on the shell;

preparing a heating body, wherein the heating body comprises a graphene heating sheet;

fixing the heating element in the shell;

preparing a base;

the temperature controller is arranged on the base, and the heating temperature of the heating body is controlled by the temperature controller.

8. The method of manufacturing of claim 7, wherein the step of manufacturing the housing comprises:

selecting a plurality of sectional materials;

punching or cutting a part of the section bar to form a plurality of first openings;

punching or cutting part of the rest section bar to form a plurality of second openings;

sequentially welding a plurality of sectional materials by using electric welding or manual arc welding, aligning according to the height, welding at an angle of 90 degrees to form a shell with a cuboid or square shape, hollowing out the middle part of the shell, and preferably polishing four corners to form an arc angle of less than 10 degrees, and further preferably 5 degrees;

preferably, the step of preparing the housing further comprises: the profile is subjected to spraying treatment, and further preferably, the step of spraying treatment on the profile comprises:

carrying out chromate oxidation on the surface of the profile;

the chromate-oxidized profile surface is painted, preferably with 1-10 layers, more preferably with 5 layers.

9. A producing method according to claim 7, wherein said step of producing a heat-generating body includes producing a graphene mica heat-generating sheet, and said step of producing a graphene mica heat-generating sheet includes:

printing graphene slurry on a substrate, drying and drying to obtain a graphene heating sheet, preferably, forming a plurality of third openings in a heating area of the graphene heating sheet for heat dissipation of the graphene heating sheet, and further preferably, the diameter of each third opening is 5-10 mm; preferably, the drying humidity is 50% RH-80% RH, and the drying temperature is 100-150 ℃; preferably, screen printing is used, further preferably, the printing motor speed is 10-20 m/s;

wrapping a flame-retardant mica sheet on the outer side surface of the graphene heating sheet, and covering a PET (polyethylene terephthalate) film on the outer side surface of the flame-retardant mica sheet, wherein the flame-retardant mica sheet is preferably 0.08-0.1mm thick, the PET film is preferably 0.12-0.18 mm thick, and further preferably, the flame-retardant mica sheet is 0.1mm thick, and the PET film is preferably 0.12mm thick;

preferably, the step of preparing the heat-generating body further comprises:

installing a plurality of graphene mica heating sheets on a clamping groove, wherein the plurality of graphene mica heating sheets are connected in parallel and are electrically connected with a temperature controller, and preferably, the clamping groove is in a bow shape;

further, preferably, the method further comprises the following steps: setting multi-gear heating temperature of a heating body, controlling the number of conducting pieces of the graphene mica heating pieces through a temperature controller, and realizing heating of corresponding gears, preferably setting the heating temperature of 50 ℃ in one gear, setting the power to be 1100W, and only radiating and heating the outside through shell hole sites; setting the heating temperature to be 100 ℃ in the second gear and setting the power to be 2200W; preferably, one or more radiators electrically connected with the temperature controller are arranged in the shell, and when the temperature in the shell exceeds a set value, the radiators are started to radiate heat outwards in combination with the shell opening;

preferably, the step of preparing the heat-generating body further comprises:

and a temperature sensor is arranged on the heating body, and the heating temperature of the heating body is measured by the temperature sensor.

10. The method of manufacturing of claim 7, wherein the step of manufacturing a base includes:

the pedestal with trapezoidal side surfaces and a quadrangular prism shape is prepared by coating a heat-resistant layer on the inner surface of toughened glass, and preferably, a display screen is arranged on the pedestal and is electrically connected with the temperature control circuit.

Technical Field

The invention belongs to the technical field of heating equipment, and particularly relates to a graphene heating electric warmer and a preparation method thereof.

Background

The electric warmer is mainly a device for converting electric energy into heat energy for warming people. The electric warmer on the market is more in variety, can divide into five types from the basic heating principle, promptly: heating element of electric heating wire, quartz tube, ceramic, halogen tube, heat conducting oil and carbon fiber. The electric warmer has numerous advantages: the energy is saved with high efficiency, the energy cost can be saved by more than 40-60% by utilizing the electric energy with the maximum efficiency, and the operation cost is greatly reduced; the environment is protected, clean and green energy of electric energy is adopted, the pollution of mineral fuel to the environment is avoided, and a clean and comfortable living space is provided for users; the intelligent control is adopted, the system is automatically controlled, optimal economic operation is realized, and the use is very convenient.

Although the electric warmer has been widely used in our daily life, some inevitable problems still exist in the use process of the electric warmer, wherein the electric warmer on the market has a thicker shell and is not convenient to move and carry; in addition, the inside heat dissipation of the electric warmer is slow, so that the temperature of the shell of the electric warmer is too high, and the external heating effect is poor. Present electric warmer control panel all sets up on board left side or right side that generates heat, leads to the unable trompil in panel left side or the right side that the room heater externally generated heat to dispel the heat, and the room heater inner space is little to as for room heater internal temperature is on the high side, can't dispel the heat to outside, perhaps dispel the heat relatively slowly, current scheme can not make the room heater that the temperature of generating heat is high or increase shell thickness in order to realize the external temperature of generating heat height.

Disclosure of Invention

The invention provides a graphene heating electric warmer, which comprises a shell, a heating body, a temperature controller and a base, wherein the shell is provided with a plurality of holes, the heating body comprises a graphene heating sheet, the heating body is arranged in the shell, the temperature controller is used for controlling the heating temperature of the heating body, and the temperature controller is arranged on the base.

Optionally, the housing comprises a multi-piece profile.

Optionally, the maximum length of the housing is 3000mm, the maximum width is 2500mm, and the maximum height is 500mm, further optionally, the length of the housing is 1200mm, the width is 800mm, the height is 40mm, and the material thickness is 3 mm.

Optionally, the housing comprises four pieces of profiles, further optionally, two pieces of profiles are 1200mm long, 40mm high and 3mm thick, and the other two pieces of profiles are 800mm wide, 40mm high and 3mm thick.

Optionally, the profile is an aluminum profile.

Optionally, the housing comprises two pieces of tempered glass, and further optionally, the tempered glass has a length of 1200mm, a width of 800mm, and a maximum thickness of 40 mm.

Optionally, the inner surface of the toughened glass is coated with a heat-resistant layer and a reflecting layer, and the reflecting layer is positioned on the heat-resistant layer.

Optionally, the housing is a cuboid or a cube, and a plurality of first openings are provided on at least three faces, and preferably, the first openings on one face are arranged in an array.

Preferably, the first opening is rectangular, and further preferably, the length of the first opening is 10mm, and the width of the first opening is 30 mm.

Optionally, at least one other surface of the housing, on which the first opening is not formed, is provided with a plurality of second openings for passing through a connection line between the heating element and the temperature controller, preferably, the second openings are circular, and further preferably, the maximum diameter of the second openings is 40mm, preferably 15 mm.

Optionally, the heating body comprises a graphene mica heating sheet, the graphene mica heating sheet comprises a graphene heating sheet and a flame-retardant mica sheet, and the flame-retardant mica sheet is bonded on the outer side surface of the graphene heating sheet.

Optionally, the graphene mica heating sheet further comprises a PET film, and the PET film is bonded on the outer side surface of the flame-retardant mica sheet.

Optionally, the heating body includes a plurality of graphene mica heating sheets connected in parallel, and preferably, the heating body further includes a clamping groove in a bow shape or a concave-convex shape for mounting the plurality of graphene mica heating sheets.

Optionally, the temperature controller controls the number of conducting pieces of the graphene mica heating pieces to realize heating of different temperature gears, preferably, the gears include a first gear and a second gear, the heating temperature of the first gear is 50 ℃, the power is 1100W, the heating temperature of the second gear is 100 ℃, and the power is 2200W.

Optionally, the heating element further comprises a temperature sensor, which is adhered to the heating element, is electrically connected with the temperature controller and is used for measuring the temperature of the heating element, preferably, the temperature sensor is an NTC temperature sensor, further preferably, the NTC temperature sensor has a resistance of 10K Ω and a B value of 3950K.

Optionally, the heat sink is further included for dissipating heat when the temperature inside the housing is too high.

Optionally, the base is made of tempered glass, preferably, the inner surface of the base is coated with a heat-resistant layer, preferably, the base is in a quadrangular prism shape with trapezoidal side surfaces, further preferably, the maximum length of the outer shape of the base is 1200mm, the width of the bottom surface is 300mm, the thickness of the base is 5-10mm, and the angle between the bottom edge and the oblique edge is 45-80 °.

Optionally, the mobile phone further comprises at least one display screen, the display screen is mounted on the base, preferably, the display screen is a touch display screen, and preferably, the mobile phone further comprises two display screens, which are respectively arranged in front of and behind the base.

Optionally, the surface of the profile is sprayed with paint, preferably, the paint is nitro primer or alkyd primer, and further preferably, the paint is alkyd primer; preferably, the surface of the profile is sprayed with 1-10 layers of paint, preferably 5 layers; preferably, the surface of the section is subjected to chromate oxidation, and the surface after chromate oxidation is sprayed with paint.

According to another aspect of the present invention, there is provided a method for manufacturing a graphene-heated electric warmer, including:

preparing a shell, and arranging a plurality of open holes on the shell;

preparing a heating body, wherein the heating body comprises a graphene heating sheet;

fixing the heating element in the shell;

preparing a base;

the temperature controller is arranged on the base, and the heating temperature of the heating body is controlled by the temperature controller.

Optionally, the step of preparing the housing comprises:

selecting a plurality of sectional materials;

punching or cutting a part of the section bar to form a plurality of first openings;

punching or cutting part of the rest section bar to form a plurality of second openings;

sequentially welding a plurality of sectional materials by using electric welding or manual arc welding, aligning according to the height, welding at an angle of 90 degrees to form a shell with a cuboid or square shape, hollowing out the middle part of the shell, and preferably polishing four corners to form an arc angle of less than 10 degrees, and further preferably 5 degrees;

preferably, the step of preparing the housing further comprises: the profile is subjected to spraying treatment, and further preferably, the step of spraying treatment on the profile comprises:

carrying out chromate oxidation on the surface of the profile;

the chromate-oxidized profile surface is painted, preferably with 1-10 layers, more preferably with 5 layers.

Optionally, the step of preparing the heating element includes preparing a graphene mica heating sheet, and the step of preparing the graphene mica heating sheet includes:

printing graphene slurry on a substrate, drying and drying to obtain a graphene heating sheet, preferably, forming a plurality of third openings in a heating area of the graphene heating sheet for heat dissipation of the graphene heating sheet, and further preferably, the diameter of each third opening is 5-10 mm; preferably, the drying humidity is 50% RH-80% RH, and the drying temperature is 100-150 ℃; preferably, screen printing is used, further preferably, the printing motor speed is 10-20 m/s;

wrapping a flame-retardant mica sheet on the outer side surface of the graphene heating sheet, and covering a PET (polyethylene terephthalate) film on the outer side surface of the flame-retardant mica sheet, wherein the flame-retardant mica sheet is preferably 0.08-0.1mm thick, the PET film is preferably 0.12-0.18 mm thick, and further preferably, the flame-retardant mica sheet is 0.1mm thick, and the PET film is preferably 0.12mm thick;

preferably, the step of preparing the heat-generating body further comprises:

installing a plurality of graphene mica heating sheets on a clamping groove, wherein the plurality of graphene mica heating sheets are connected in parallel and are electrically connected with a temperature controller, and preferably, the clamping groove is in a bow shape;

preferably, the step of preparing the heat-generating body further comprises:

and a temperature sensor is arranged on the heating body, and the heating temperature of the heating body is measured by the temperature sensor.

Optionally, the step of preparing the base comprises:

the pedestal with trapezoidal side surfaces and a quadrangular prism shape is prepared by coating a heat-resistant layer on the inner surface of toughened glass, and preferably, a display screen is arranged on the pedestal and is electrically connected with the temperature control circuit.

Optionally, the method further comprises:

setting multiple heating temperatures of the heating body, controlling the number of conducting pieces of the graphene mica heating pieces through a temperature controller to realize heating of corresponding gears, preferably setting the heating temperature of 50 ℃ in one gear, setting the power to be 1100W, and only radiating and heating the outside through the hole sites of the shell; setting the heating temperature to be 100 ℃ in the second gear and setting the power to be 2200W; preferably, one or more heat sinks are disposed within the housing in electrical communication with the temperature controller, the heat sinks being activated to dissipate heat away from the housing in conjunction with the housing opening when the temperature within the housing exceeds a set value.

According to the invention, the temperature controller is arranged on the base, so that more opening spaces can be provided for the frame of the shell, the heat dissipation area is increased, and the strong convection radiator is arranged at the bottom of the shell, so that the external heating effect is improved.

In addition, a strong convection radiator is added in the warmer, so that the temperature of the tempered glass panel in the warmer and outputting the temperature to the outside cannot be over-heated, and the shell can be thinned.

The invention discloses a graphene heating electric warmer, which is a graphene heating ultrathin electric warmer and aims to solve the problems that the warmer in the prior art is inconvenient to move due to thick shell, slow in internal heat dissipation, overhigh shell temperature and the like.

The invention adopts the graphene heating plate as the heating body, has the characteristics of extremely high heat conductivity and extremely high far infrared radiation conversion efficiency, generates far infrared life light waves of 6-14 mu m close to the human body, and the like, and replaces the traditional medium heating body.

The invention adopts a metal shell with the thickness of 40mm, is light, convenient and fast to use and is convenient to move.

Drawings

Fig. 1 is a schematic perspective view of a graphene heating electric warmer of the present invention;

FIG. 2 is a schematic plan view of a graphene heating warmer of the present invention;

FIG. 3 is a schematic view of the graphene mica heating sheet according to the present invention;

fig. 4 is a schematic view of a flow chart of a manufacturing method of the graphene-heated electric warmer.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Fig. 1 is a schematic view of a graphene-heated electric heater according to the present invention, and as shown in fig. 1, the graphene-heated electric heater includes a housing 1, a heating element 2, a temperature sensor 3, a temperature controller 4, a radiator 5, at least one display screen 6, and a base 7, wherein:

the shell 1 comprises four aluminum profiles 11 and two pieces of toughened glass 12, wherein a left aluminum profile, a right aluminum profile and a top aluminum profile are provided with a plurality of first holes 111, a plurality of second holes are formed in a bottom aluminum profile, the first holes are used for heat dissipation, the second holes are used for connecting a heating body and a temperature controller, the inner surface of the toughened glass is coated with a heat-resistant layer and a reflecting layer, the reflecting layer is located on the heat-resistant layer, the heating body is prevented from generating heat and radiating too high temperature to the inner surface of the toughened glass, the heat-resistant layer enables the toughened glass to have heat-resistant characteristics, and the reflecting layer reflects the temperature to the inside of the warmer, so that the surface temperature of the toughened glass cannot be over-heated.

As shown in fig. 2, the heating element 2 includes an aluminum section bar 21, a plurality of graphene mica heating sheets 22 and a clamping groove 23, the aluminum section bar is fixed on an aluminum profile of the housing, as shown in fig. 3, the graphene mica heating sheets include a graphene heating sheet, a flame-retardant mica sheet 223 and a PET film 224, the flame-retardant mica sheet is bonded on an outer side surface of the graphene heating sheet, the PET film is bonded on an outer side surface of the flame-retardant mica sheet, the graphene heating sheet includes a substrate 221 (e.g., a PVC thin plate) and graphene heating slurry 222 coated on the substrate, the clamping groove is an arched aluminum clamping groove, the plurality of graphene mica heating sheets are connected in parallel, and the graphene mica heating sheets with different numbers are switched on to realize heating temperatures of different gears. Preferably, be provided with a plurality of third trompils on the graphite alkene piece that generates heat for the heat dissipation prevents that graphite alkene from generating heat the inside high temperature of piece, prevents that graphite alkene from generating heat the piece and arousing spontaneous combustion because the high temperature, has adopted the mode of lateral surface parcel fire-retardant mica sheet to further prevent to generate heat the inside high temperature of piece simultaneously, arouses spontaneous combustion.

The temperature sensor 3 is an NTC temperature sensor and is attached to the heating body.

The temperature controller 4 is used for controlling the heating temperature of the heating body and is arranged on the base.

The radiator 5 is fixed on the bottom surface of the shell, is electrically connected with the temperature controller and is used for radiating when the temperature in the shell is too high.

The display screens 6 are mounted on a base 7, preferably two display screens 6 are mounted on different sides of the base, for operation.

The bottom surface of the base 7 is in a trapezoidal quadrangular shape, toughened glass is adopted, and a heat-resistant layer is coated on the inner surface of the base.

According to the invention, the temperature controller is placed on the base, so that more opening spaces are provided for the frame of the shell, the heat dissipation area is increased, and the volume of the warmer is reduced. Place temperature controller at the room heater base, the trilateral trompil all of room heater shell has increased heat radiating area, increases strong convection radiator simultaneously in room heater inside, realizes that the room heater is inside and the toughened glass panel temperature of external output temperature can not the overtemperature, can make the shell thin simultaneously.

The graphene heating warmer can be powered by the storage battery internally or externally, as shown in fig. 1, the graphene heating warmer further comprises an alternating current plug 8 (for example, a 220v alternating current plug), one end of the alternating current plug is electrically connected with the temperature control circuit, and the other end of the alternating current plug is connected with an external power supply.

In one embodiment, the graphene heating warmer further comprises a temperature control switch for controlling the number of conducting pieces of the graphene mica heating pieces.

Optionally, the temperature control switch comprises a first-gear button and a second-gear button to adjust the first-gear temperature of the heater to be 50 ℃, 1100W and half of the graphene heating mica sheets to work so as to realize half-power output; and the temperature of the second stage is 100 ℃, 2200W, and all graphene heating mica sheets work to realize full-power output. The temperature control switch is electrically connected with the temperature controller, and the conduction quantity of the graphene mica heating sheets can be realized through the temperature controller.

Optionally, the temperature control switch is a touch screen button on the display screen.

Fig. 4 is a schematic diagram of a flow chart of a preparation method of the graphene-heated electric warmer, as shown in fig. 4, the preparation method includes:

step S1, preparing a shell, and arranging a plurality of openings on the shell;

step S2, preparing a heating element, wherein the heating element comprises a graphene heating sheet;

step S3, fixing the heating element in the shell;

step S4, preparing a base;

in step S5, the temperature controller is attached to the base, and the heating temperature of the heating element is controlled by the temperature controller.

In one embodiment, a method of making a housing comprises:

warmer shell adopts metal frame, further adopts the aluminium alloy, uses digit control machine tool or laser cutting machine to cut out maximum length and be 3000mm, and maximum width is 2500mm, and maximum height is 500mm, preferably: the cutting length is 1200mm, the width is 800mm, the height is 40mm, and the material thickness is 3 mm. Two aluminum frames with the length of 1200mm, the height of 40mm, the thickness of 3mm, the width of 800mm, the height of 40mm and the thickness of 3mm are cut.

And (3) using a punching machine or a cutting machine to punch or cut the long aluminum type meter frame and the wide aluminum type meter frame into rectangular strips, and punching a plurality of holes on the shell. The maximum length of the rectangular strip is 1200mm, the maximum width is 40mm, and the rectangular strip is preferably as follows: the length is 10mm and the width is 30 mm. And (3) reserving a long aluminum type meter frame, not making strip-shaped holes, and making circular holes, wherein the maximum diameter is 40mm, and the optimal diameter is 15 mm.

And (3) polishing the outline frame by using a polishing machine, and performing necessary finishing on corners, burrs and cut hole parts of the long aluminum type surface frame and the wide aluminum type frame so as to ensure the attractiveness of the appearance.

The long aluminum type meter frame and the wide aluminum type meter frame are welded in sequence by electric welding or manual electric arc welding, the long aluminum type meter frame and the wide aluminum type meter frame are aligned according to the height and are welded at an angle of 90 degrees, the appearance is cuboid, and the middle part is hollow. The four corners are ground to form an arc angle of less than 10 deg., preferably 5 deg..

The outer surface of the outline frame is sprayed, and chromate oxidation is firstly carried out on the part needing to be sprayed on the surface of the aluminum plate, so that the adhesive force of a coating film and the corrosion resistance of the coating film are improved during spraying. The spray paint can be selected from nitro primer or alkyd primer, preferably alkyd primer, and has good adhesion and antirust performance. Generally, the paint is sprayed by 1-10 layers, preferably 5 layers, the interval time of each layer is determined according to the drying condition of a long layer of paint surface, and each layer is ground and leveled by using water sand paper after being dried.

Use toughened glass to laminate around the aluminium type frame, the appearance is the cuboid form, and length 1200mm, wide 800mm, maximum thickness is 40mm, preferably: the thickness of the toughened glass is 5mm, a heat-resistant layer and a reflecting layer are coated on the inner surface of the toughened glass, and the reflecting layer is positioned right above the heat-resistant layer. The edge adopts hot melt adhesive and aluminium type table frame to paste the laminating.

In one embodiment, a method for producing a heat-generating body includes:

the heat-generating body adopts graphite alkene piece that generates heat, and piece basement printing plate that generates heat can select for use PET or PVC sheet metal, and thickness is 1-3mm, and the maximum length is 1200mm, and the maximum width is 800mm, and preferred: the printing substrate material is a PVC thin plate with the thickness of 2mm, the length of 800mm and the width of 200 mm.

Installing a matched screen printing plate by using screen printing equipment, adding graphene slurry into the screen printing plate, adjusting the speed of a printing motor to be 10-20m/s, drying and the like to prepare a graphene heating sheet printed on a pvc sheet, wherein a heating area of the graphene heating sheet is provided with a plurality of round small holes, the aperture is 5-10mm, the drying humidity is 50-80% RH, the drying temperature is 100-150 ℃, and the preferable selection is as follows: the printing motor speed is 12m/s, the aperture of the round small hole of the heating area is 5mm, the drying humidity is 50% RH, and the drying temperature is 120 ℃.

The outer side face of the graphene heating sheet is wrapped with a layer of flame-retardant mica sheet, the outer side face of the flame-retardant mica sheet is covered with a layer of PET film, the flame-retardant mica sheet is bonded on the outer side face of the graphene heating sheet, the PET film is bonded on the outer side face of the flame-retardant mica sheet, the thickness of each mica sheet is 0.08-0.1mm, the thickness of PET is 0.12-0.18 mm, the thickness of the mica sheet is preferably 0.1mm, and the thickness of the PET film is 0.12mm, so that the graphene mica heating sheet is prepared. The flame-retardant mica sheets are added, so that the fire risk is reduced, and the safety performance is improved; the heating speed is high, and the heat dissipation speed is also high.

The warmer selects 3-8 graphene mica heating sheets, preferably: 4 graphene mica heating sheets are selected and embedded in the groove through a bow-shaped clamping groove, the bow-shaped clamping groove is fixed on an aluminum section bar perpendicular to the long aluminum section frame through screws, the length of the aluminum section bar is 80mm, the width of the aluminum section bar is 30mm, the thickness of the aluminum section bar is 10mm, and the two ends of the aluminum section bar are welded on the long aluminum section frame through a welding machine. The whole graphene mica heating body is located in the middle of the inside of the heater shell, 4 pieces of graphene mica heating sheets embedded in a bow-shaped clamping manner are attached to a third piece of an NTC temperature sensor, and the temperature sensor is preferably a temperature sensor with the resistance of 10K omega and the B value of 3950K. The 4 graphene mica heating sheets are electrically connected in a parallel mode, and the other ends of the graphene mica heating sheets are electrically connected with a shell base temperature control switch.

In one embodiment, the left side and the right side of the bottom in the heater shell are respectively provided with a radiator which is fixed on an aluminum section bar vertical to the long aluminum section frame through screws, and when the temperature in the heater is overhigh, the radiator starts to be started to radiate the inside. The graphene heating ultrathin electric warmer temperature controller is provided.

In one embodiment, a method of making a base includes:

the electric warmer base adopts toughened glass, the inner surface of the toughened glass is coated with a heat-resistant layer, the shape is in the shape of a quadrangular prism with trapezoidal side faces, the maximum length of the shape is 1200mm, the width of the bottom face is 100-300mm, the thickness is 5-10mm, the angle between the bottom edge and the bevel edge is 45-80 degrees, and the preference is as follows: the base is 1200mm long, and bottom surface width is 200mm, and toughened glass thickness is 5mm, and the angle of base and hypotenuse is 60.

Optionally, the temperature control circuit board is located in the middle of the inner portion of the quadrangular prism of the electric heater and is adhered to the bottom surface of the base through adhesive sticker, the circuit board is connected with two LED touch display screens which are attached to the front and the back of the base bevel edge tempered glass, after the circuit board is electrified, the LED touch display screens are lighted, the temperature of the heater is adjusted by pressing first gear buttons and second gear buttons on the LED display screens, the temperature is displayed on the LED display screens through NTC real-time feedback gears, one end of the circuit board is electrically connected with the graphene heating body, and the other end of the circuit board is electrically connected with the 220v alternating current plug.

Optionally, the first-gear set temperature of the heater is 50 ℃, the power of the heater is 1100W, and at the moment, the heater only radiates and heats the outside through the hole site of the shell; the setting temperature of the second gear of the warmer is 100 ℃, the power is 2200W, at the moment, the radiator in the warmer starts to work, the warmer radiates and supplies heat to the outside through the shell hole site and the radiator, and the inside of the shell and the outer surface of the toughened glass are not over-temperature.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.