KR102190787B1 - Stick-type heat generating device and method for manufacturing plane heater included therein - Google Patents

Abstract

According to one embodiment of the present invention, provided are a heating device formed in a stick type and capable of simply heating or insulating a fluid and a method for manufacturing a planar heating element included therein. A stick-type heating device according to an embodiment of the present invention comprises: a heating unit which includes a substrate, a planar heating element formed by electrospinning a spinning solution in which an organic reducing solvent, a metal salt and a carbon fiber precursor are mixed on an upper surface of the substrate to form nanofibers and then performing copper plating on the nanofibers, electrodes coupled to both sides of the planar heating element, and a cover film formed on a lower surface of the substrate or an upper surface of each of the planar heating element and the electrodes, and generates heat when electricity is applied; a housing in which a space to which the heating unit is introduced is formed, and which transmits heat of the heating unit to surrounding fluid; a radiation unit which is coupled to a lower end of the housing and transmits heat of the heating unit to surrounding fluid; a power supply unit which applies electricity to the heating unit; and a cap unit which is coupled to an upper end of the housing and has a space to which the power supply unit is introduced.

Description

Stick-type heating device and manufacturing method of planar heating element included therein {STICK-TYPE HEAT GENERATING DEVICE AND METHOD FOR MANUFACTURING PLANE HEATER INCLUDED THEREIN}

The present invention relates to a stick-type heating device and a method of manufacturing a planar heating element included therein, and more particularly, to a heating device formed in a stick-like shape and capable of easily heating or keeping warm fluid, and a method of manufacturing a planar heating element included therein. will be.

Recently, the demand for favorite foods such as coffee or tea has been continuously increasing, and the demand for heating or keeping warm for liquid foods is also continuously increasing due to an increase in outdoor activities. Various technologies have been developed for devices that not only can maintain or heat the temperature, but also portable.

However, conventional devices used for heating or warming are of a type that directly heats a liquid in a container containing liquid food as described above, or a type that heats a container containing food in liquid form. In order to perform heating or thermal insulation for liquid food, there is a problem in that only a specific container having a configuration for heating must be used.

In Korean Patent Application Laid-Open No. 10-2015-0034975 (name of the invention: electric heating type portable tumbler and its control method), a heat conductive member 11 made of a conductive metal is disposed inside the non-conductive member 12 made of a non-conductive material. The body is integrally inserted by being inserted as a whole, and a space (10a) in which a beverage can be accommodated is formed in the body, and the upper side is opened, and at the lower side, a coupling part for fitting or separating with the heating/control member 30 A main body 10 in which (11a) is formed; And a ring-shaped body with an inner diameter that can be fitted or separated in close contact with the coupling portion 11a formed on the lower portion of the main body 10, and rapidly heat or keep the beverage contained in the container according to the user's selection. A tumbler including a heating/adjusting member 30 for displaying its operating state to the outside while maintaining it is disclosed.

Republic of Korea Patent Publication No. 10-2015-0034975

An object of the present invention for solving the above problems is to provide a heating device capable of directly supplying heat to fluids contained in various containers.

In addition, an object of the present invention is to provide a heat generating device that is portable and easy to move and store.

The technical problem to be achieved by the present invention is not limited to the technical problems mentioned above, and other technical problems that are not mentioned can be clearly understood by those of ordinary skill in the technical field to which the present invention belongs from the following description. There will be.

The configuration of the present invention for achieving the above object is to form nanofibers by electrospinning a spinning solution in which a substrate, an organic reducing solvent, a metal salt, and a carbon fiber precursor are mixed on the upper surface of the substrate, A planar heating element formed by performing copper plating, an electrode coupled to both sides of the planar heating element, and a cover film formed on the lower surface of the substrate or on the upper surface of each of the planar heating element and the electrode, and applying electricity A heating unit that generates heat during; A housing in which a space into which the heating unit is drawn is formed and the heat of the heating unit is transferred to the surrounding fluid; A heat dissipation unit coupled to the lower end of the housing and transferring heat of the heating unit to the surrounding fluid; A power supply for applying electricity to the heating unit; And a cap portion that is coupled to an upper end of the housing and has a space through which the power supply unit is introduced, wherein the combination of the housing and the cap portion has a shape of a stick.

In an embodiment of the present invention, the housing may include a temperature sensor on the outside.

In an exemplary embodiment of the present invention, a control unit may further include a controller configured to receive information about a fluid temperature around the housing from the temperature sensor and control electricity applied from the power unit to the heating unit.

In an embodiment of the present invention, the control unit may transmit information on one or more selected from among a fluid temperature around the housing, a heating time of the heating unit, and a remaining charge amount of the power supply unit to the portable electronic device.

In an embodiment of the present invention, the housing may be formed of glass, metal or synthetic resin.

In an embodiment of the present invention, the heat dissipation unit may be formed of a material having a relatively higher heat transfer rate than a material forming the housing.

In an embodiment of the present invention, since the spinning solution is aged at an aging temperature and then electrospun to form the nanofibers, metal nanoparticles by the metal salt may be uniformly formed on the surface of the nanofibers.

In an embodiment of the present invention, since the metal nanoparticles are used as a catalyst, electroless copper plating may be performed on the surface of the nanofibers.

In an embodiment of the present invention, the substrate may be formed of an insulating material.

In an embodiment of the present invention, the heating part may be inserted into the housing in a curved shape.

The configuration of the present invention for achieving the above object comprises: a first step of preparing a spinning solution by mixing an organic reducing solvent, a metal salt, and a carbon fiber precursor; A second step of aging the spinning solution at an aging temperature equal to or less than the boiling point of the organic reducing solvent, and uniformly generating and distributing nanoparticles by the carbon fiber precursor in the spinning solution; A third step of electrospinning the spinning solution on a substrate to form nanofibers; A fourth step of immersing the substrate on which the nanofibers are formed in an electroless copper plating solution to perform copper plating on the nanofibers to form a surface heating element on the substrate; And a fifth step of drying the planar heating element at a drying temperature.

The effect of the present invention according to the above configuration is that the heating device can be easily heated or kept warm by simply immersing and operating the heating device in each of the fluids contained in various containers by forming the heating device in a stick shape.

In addition, the effect of the present invention is that the heating device is easily carried and stored by forming the heating device in a small stick shape.

The effects of the present invention are not limited to the above effects, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a front view of a heating device according to an embodiment of the present invention.
2 is an internal configuration diagram of a heating device according to an embodiment of the present invention.
3 is a state diagram of a heating device according to an embodiment of the present invention.
4 is an exploded perspective view of a heating unit according to an embodiment of the present invention.
5 is a schematic diagram of an actual image of a heating unit and a button unit according to an embodiment of the present invention.
6 is a schematic diagram of a state change of a nanofiber according to an embodiment of the present invention.
7 is an SEM image of a nanofiber plated according to an embodiment.
8 to 10 are images of experiments using a heating unit according to another embodiment of the present invention.
11 is a schematic diagram of a mounting and charging device according to an embodiment of the present invention.
12 is a schematic diagram of a mounting and charging device according to another embodiment of the present invention.
13 is a schematic diagram of a mounting and charging device according to another embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be implemented in a number of different forms, and therefore is not limited to the exemplary embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and similar reference numerals are assigned to similar parts throughout the specification.

Throughout the specification, when a part is said to be "connected (connected, contacted, bonded)" with another part, it is not only "directly connected", but also "indirectly connected" with another member in the middle. "Including the case. In addition, when a part "includes" a certain component, it means that other components may be further provided, rather than excluding other components unless specifically stated to the contrary.

The terms used in this specification are used only to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view of a heating device according to an embodiment of the present invention, FIG. 2 is an internal configuration diagram of a heating device according to an embodiment of the present invention, and FIG. 3 is a view of a heating device according to an embodiment of the present invention. It is a state diagram of use. And, Figure 4 is an exploded perspective view of the heating unit 100 according to an embodiment of the present invention, Figure 5 is an actual image of the heating unit 100 according to an embodiment of the present invention and a schematic view of the button unit 270 to be. Here, (a) of FIG. 5 is an actual image of the heating unit 100, and (b) of FIG. 5 is a schematic diagram of the button unit 270.

As shown in FIGS. 1 to 5, the heating device of the present invention comprises a substrate 120, a spinning solution obtained by mixing an organic reducing solvent, a metal salt, and a carbon fiber precursor onto the upper surface of the substrate 120 to produce nanofibers. After forming, the planar heating element 110 formed by performing copper plating on the nanofibers, the electrode 140 coupled to both sides of the planar heating element 110, and the lower surface of the substrate 120 or the planar heating element ( A heating unit 100 having a cover film 130 formed on an upper surface of each of the 110 and the electrode 140, and generating heat when electricity is applied; A housing 210 in which a space into which the heating unit 100 is introduced is formed, and the heat of the heating unit 100 is transferred to the surrounding fluid; A heat dissipation unit 220 coupled to the lower end of the housing 210 and transferring heat from the heating unit 100 to the surrounding fluid; A power supply unit 230 for applying electricity to the heating unit 100; And a cap portion 240 coupled to the upper end of the housing 210 and forming a space into which the power supply unit 230 is inserted.

Here, the combination of the housing 210 and the cap part 240 may be in the shape of a stick. Accordingly, as shown in FIG. 3, when the housing 210 is immersed in the fluid contained in the container 500 and the switch 273 of the button unit 270 is turned on, heat is generated in the heating unit 100. Is generated, and the heat may be transferred to the housing 210 and the heat dissipating unit 220 and then transferred to the fluid. And, the fluid can be heated by such heat transfer.

The substrate 120 may be formed of an insulating material. In addition, the heating unit 100 may be inserted into the housing 210 in a curved shape. Here, the substrate 120 may be formed of a flexible material so that the heating unit 100 has a bent shape, and thus the substrate 120 may be formed of a synthetic resin such as polyimide (PI) or polycarbonate (PC). I can.

The heating unit 100 may be drawn into the housing 210 in a bent shape, that is, in a folded shape, and at this time, the substrate 120 is positioned toward the central axis of the housing 210 and the surface heating element 110 The heating unit 100 may be inserted into the housing 210 so that the exposed surface contacts the inner surface of the housing 210. Accordingly, the heat generated by the planar heating element 110 can be directly transferred to the wall of the housing 210, and the space around the central axis in the interior of the housing 210 is insulated by the substrate 120. As implemented, the thermal efficiency transferred from the heating unit 100 to the fluid around the housing 210 may be increased.

As shown in FIG. 4, the planar heating element 110 is formed on the upper surface of the substrate 120, and the cover film 130 may be coupled to the lower surface of the substrate 120. In addition, electrodes 140 may be formed along the longitudinal direction of the planar heating element 110 on both sides of the surface to which the planar heating element 110 is exposed. In addition, the cover film 130 may be coupled to the upper surface of each of the planar heating element 110 and the electrode 140.

Here, the cover film 130 may be transparently formed in the shape of a film formed of a flexible material. However, the present invention is not limited thereto, and a flexible material may be used as a material for the cover film 130. Since the cover film 130 must have heat resistance while having a shape of a film, a synthetic resin such as polyethylene terephthalate (PET) may be used as a material forming the cover film 130.

The electrode 140 may have a strip shape having a perforated portion. The electrode 140 may be formed of metal or carbon nanofiber. However, the present invention is not limited thereto, and various materials capable of transmitting electricity may be used.

The housing 210 may be formed of glass, metal or synthetic resin. Here, the housing 210 may be formed of tritan resin among synthetic resins. Since the housing 210 is formed of the above material, heat generated by the heating unit 100 can be easily transferred to the fluid around the housing 210, and even if the housing 210 is immersed in the edible fluid, The heating device of the invention can be used hygienically.

In addition, the heat dissipation unit 220 may also be formed of glass, metal, or synthetic resin. Here, the heat dissipation part 220 may be formed of tritan resin among synthetic resins. In addition, the heat dissipation unit 220 may be formed of stainless steel (SUS) among metals. Since the heat dissipation part 220 is formed of the above material, not only can the heat generated by the heat dissipation part 100 be easily transferred to the fluid around the heat dissipation part 220, but also the heat dissipation part 220 is Even if it is submerged, the heating device of the present invention can be used hygienically.

In addition, the heat dissipation unit 220 may be formed of a material having a relatively higher heat transfer rate than a material forming the housing 210. When the heating device of the present invention is put into and removed from the container 500, or when the fluid in the container 500 is stirred by using the heating device of the present invention, the heat dissipation unit 220 collides with the container 500 a plurality of times, In this case, in order to increase the durability of the heat dissipation part 220, the thickness of the heat dissipation part 220 may be formed to be relatively thicker than the thickness of the housing 210. In addition, when the heat dissipation part 220 is formed of a material having a relatively higher heat transfer rate than the material forming the housing 210, even if the thickness of the heat dissipation part 220 is relatively thicker than the thickness of the housing 210, the housing ( The heat dissipation unit 220 may have a heat dissipation amount per unit area equal to or greater than the heat dissipation amount per unit area 210).

The heat dissipation unit 220 may have a plurality of grooves or corrugations on the exposed surface, and accordingly, the contact area of the fluid of the heat dissipation unit 220 increases, so that the heat dissipation efficiency of the heat dissipation unit 220 may be increased. have. In addition, the same principle is applied to the housing 210 as well, so that grooves or wrinkles may be provided on the surface of the housing 210.

The housing 210 may include a temperature sensor 251 on the outside. In addition, the heating device of the present invention further includes a control unit 260 that receives fluid temperature information around the housing 210 from the temperature sensor 251 and controls electricity applied from the power supply unit 230 to the heating unit 100. Can include. In addition, the control unit 260 may transmit information on one or more items selected from among the fluid temperature around the housing 210, the heating time of the heating unit 100, or the remaining charge amount of the power supply unit 230 to the portable electronic device. have. Here, a heat insulating layer 252 is formed between the temperature sensor 251 and the outer surface of the housing 210, so that the temperature sensor 251 is not affected by the temperature of the outer surface of the housing 210 You can make it possible to measure only the fluid temperature.

The control unit 260 may include a wireless transmitter and wirelessly transmit the above information to a portable electronic device. The user can visually check the above information using a portable electronic device. In addition, the control unit 260 may store a preset temperature, which is the temperature of the fluid, and control electricity applied to the heating unit 100 according to the set temperature. Specifically, when the current temperature of the fluid is lower than the set temperature, electricity may be started to be applied to the heating unit 100 or the amount of electricity being applied may be increased. In addition, when the current temperature of the fluid is higher than the set temperature, the application of electricity to the heating unit 100 may be stopped.

As shown in Figure 5, the heating device of the present invention is coupled to the cap 240 and connected to the control unit 260, a switch 273 for turning on/off the control unit 260 and a temperature increase for varying the set temperature. A button unit 270 including a button 271 and a temperature lowering button 272 may be further included. When operating the temperature increase button 271 and the temperature decrease button 272 in order to change the set temperature, the temperature increase button 271 so that the information on the set temperature that is changed by such operation can be displayed on the portable electronic device. ) And the operation information for the temperature down button 272 may be transmitted from the controller 260 to the portable electronic device. In addition, an indicator (not shown) is formed on the button unit 270, and when the switch 273 is turned on, the indicator may be turned on, and when the switch 273 is turned off, the indicator may be turned off.

The cap part 240 is provided with a female thread in a portion coupled to the housing 210, and the housing 210 has a male thread in a portion coupled with the cap portion 240, so that the cap portion 240 and the housing 210 are Can be screwed together. In addition, the cap portion 240 is formed with a clip 241, it may be easy to carry.

Since the spinning solution is aged at an aging temperature and then electrospinned to form nanofibers, metal nanoparticles by a metal salt may be uniformly formed on the surface of the nanofibers. In addition, metal nanoparticles may be used as a catalyst to perform electroless copper plating on the surface of the nanofibers. Accordingly, since metal (ex. silver (Ag)) nanoparticles shaped on the surface of the nanofibers are used as a catalyst, an additional catalytic treatment process is omitted, so that copper plating can be performed on the surface of the nanofibers. Details on this will be described in the following method of manufacturing the planar heating element 110.

6 is a schematic diagram of a state change of a nanofiber according to an embodiment of the present invention, and FIG. 7 is an SEM image of a nanofiber plated according to an embodiment. Specifically, Figure 6 (a) shows a nanofiber formed by electrospinning, Figure 6 (b) shows a state in which silver is deposited on the surface of the nanofiber, and Figure 6 (c) shows a copper plating It shows the nanofiber. In addition, FIG. 7 (a) is an image of a plated nanofiber having a diameter of 1.83 to 3.26 micrometers (µm) after copper plating, taken at a magnification x10000 of an SEM (electron microscope), and FIG. 7(b) ) Is an image taken with a magnification x20000 of an SEM (electron microscope) for the plated nanofibers.

Hereinafter, a method of manufacturing the planar heating element 110 included in the heating device of the present invention will be described.

In the first step, a spinning solution may be prepared by mixing an organic reducing solvent, a metal salt, and a carbon fiber precursor. Here, the organic reducing solvent may be formed of dimethylformamide (DMF). In addition, the metal salt may be silver nitrate (AgNO ₃ ). In addition, the carbon fiber precursor may be polyacrylonitrile (PAN).

In this case, the carbon fiber precursor may be 5 to 20% by weight based on 100% by weight of the spinning solution. When the carbon fiber precursor is less than 5% by weight with respect to 100% by weight of the spinning solution, the concentration of the carbon fiber precursor in the spinning solution is not sufficiently formed, and thus the rate of formation of nanofibers by performing electrospinning may be reduced. And, with respect to 100% by weight of the spinning solution, when the carbon fiber precursor is more than 20% by weight, the thickness variation of the nanofibers formed by electrospinning increases, and the proportion of carbon fibers having a diameter of 1 μm or more increases, The rate of formation of nanofibers may be reduced.

In addition, the metal salt may be 1 to 80% by weight based on 100% by weight of the spinning solution. When silver nitrate (AgNO ₃ ) is less than 1% by weight with respect to 100% by weight of the spinning solution, the concentration of silver ions (Ag ⁺ ) in the spinning solution is not sufficiently formed, and the amount of silver particles formed by precipitation on the surface of the nanofibers This decrease can increase the proportion of nanofibers without silver particles. And, with respect to 100% by weight of the spinning solution, when the silver nitrate (AgNO ₃ ) exceeds 80% by weight, the concentration of silver ions (Ag ⁺ ) in the spinning solution is excessive, so that silver particles formed by precipitation on the surface of the nanofibers It may not be distributed evenly in the nanofibers, and some silver particles may be aggregated and precipitated.

In the second step, the spinning solution is aged at an aging temperature equal to or less than the boiling point of the organic reducing solvent, so that nanoparticles by carbon fiber precursors can be uniformly generated and distributed in the spinning solution. When the aging temperature exceeds the boiling point of the organic reducing solvent, nanoparticles due to the carbon fiber precursor may not be uniformly generated and distributed in the solvent.

In the third step, nanofibers may be formed by electrospinning the spinning solution on the substrate 120. Here, metal due to a metal salt may be deposited on the surface of the nanofibers due to the reducing effect of the solvent. Here, the metal by the metal salt may be silver (Ag). By controlling the silver nanoparticles generated by the reducing effect of the solvent according to the aging time and temperature, the silver nanoparticles can be used as a catalyst for electroless plating on the nanofibers after electrospinning the spinning solution. That is, depending on the aging time and temperature of the silver nanoparticles, the amount or size (surface area per particle) of the silver nanoparticles deposited on the surface of the nanofibers may be adjusted. Here, the spinning solution is radiated to the target negative electrode, and the negative electrode may be a roll, plate, or needle type.

Here, when the target is a roll type, the rotational speed of the roll may be 1000 to 2000 rpm. The angle at which the spinning solution is spun into the roll is called the orientation angle. When the rotational speed of the roll is between 1000 and 2000 rpm, the orientation angle can be maintained while forming nanofibers. That is, when the rotational speed of the roll is less than 1000 rpm or more than 2000 rpm, nanofibers are generated in a state where the orientation angle is not constant, so that the diameter of the nanofibers is not uniformly formed, and thus, copper-plated nanofibers are used. When voltage is applied after forming a network, electricity may not be energized. Alternatively, the spinning solution may be radiated onto a cathode electrode formed of a conductive material. When the spinning solution is radiated to the cathode electrode, the spinning solution may be radiated toward the cathode electrode while the position or the injection angle of a syringe injecting the spinning solution is changed.

In the fourth step, the substrate 120 on which the nanofibers are formed may be immersed in an electroless copper plating solution to perform copper plating on the nanofibers to form the planar heating element 110 on the substrate 120. Here, the nanofibers may be injected into the electroless copper plating solution at an amount of 0.05 to 0.5 g/L and stirred. In an embodiment of the present invention, it is described that nanofibers are injected into the electroless copper plating solution and then stirred, but the nanofibers may be injected into the electroless copper plating solution without a stirring process.

When nanofibers are injected in an amount less than 0.5 g/L or more than 0.5 g/L in the electroless copper plating solution, copper plating may not be performed for some nanofibers. Since there is a known technique for the preparation of the electroless copper plating solution, a detailed description will be omitted.

In the fifth step, the planar heating element 110 may be dried at a drying temperature. In this case, the drying temperature may be 10 to 100 degrees (℃). When the drying temperature is less than 10 degrees, drying of the plated nanofibers may not be performed properly. In addition, when the drying temperature is greater than 100 degrees, the plated copper may be peeled off due to rapid drying.

Hereinafter, examples and experimental examples of the heating device of the present invention will be described.

[Example]

Carbon fiber precursor polyacrylonitrile (PAN, polyacrylonitrile) is dissolved in 8% by weight in a solvent formed of dimethylformamide (DMF), and silver nitrate (AgNO ₃ ) is dissolved in 10% by weight to dissolve the spinning solution. Prepared. In addition, aging was performed for 60 minutes at room temperature (RT, 25°C) for the spinning solution. Thereafter, the spinning solution was electrospun for 30 seconds with an area of 1 cm ^{2 on} the substrate 120 of a PC film (PolyCabonate film) for 30 seconds to form nanofibers on the substrate 120.

Next, copper plating was performed by immersing the substrate 120 on which nanofibers were formed in a commercial electroless copper plating solution (Macdermid M185A) for 2 hours, and then on the nanofibers plated at room temperature (RT, 25℃). Drying was carried out. Accordingly, the planar heating element 110 was formed on the substrate 120.

Thereafter, by bonding the electrodes 140 formed of silver on both sides of the planar heating element 110, and bonding the transparent cover film 130 to the lower part of the substrate 120 and the upper part of the planar heating element 110, the heating unit (100) was formed.

As shown in FIG. 7, it can be seen that copper plating is uniformly formed on the surface of the plated nanofibers by the method of manufacturing the planar heating element 110 of the present invention. In addition, a metal (Ag ⁺ ) catalyst should be formed by being embedded on the surface of a polymer (polyacrylonitrile (PAN)) so that the metal film formed in one layer on the surface of the nanofiber has excellent bonding strength, and this catalyst is formed between the polymer and the metal film. It can be seen that the bonding force of the generated metal film can be increased through the anchor effect.

[Experimental example]

According to [Example], the electric wire is connected to the heating unit 100 having an area of 1cm ² of the planar heating element 110, and the heating unit 100 is immersed in water at 100ml, 60°C in the container 500. Next, electricity of 1.5V and 6A was supplied to the heating unit 100. The temperature around the vessel 500 is 25°C.

[Comparative example]

100ml, 60 ℃ water was put in the container 500. The temperature around the vessel 500 is 25°C.

8 to 10 are images of experiments using the heating unit 100 according to another embodiment of the present invention. 8 to 10, the container 500 of [Comparative Example] may be positioned on the left side, and the container 500 of [Experimental Example] may be positioned on the right side. Here, FIG. 8 is an image of the arrangement of the container 500 of the [Comparative Example] and the container 500 of the [Experimental Example] before applying electricity to the heating unit 100 of [Experimental Example]. In addition, FIG. 9 is a thermal image of the container 500 of [Comparative Example] and the container 500 of [Experimental Example] at a time 10 minutes elapsed after applying electricity to the heating unit 100 of [Experimental Example] to be. And, FIG. 10 is a thermal image of the container 500 of [Comparative Example] and the container 500 of [Experimental Example] at a time 30 minutes elapsed after applying electricity to the heating unit 100 of [Experimental Example] to be.

As shown in FIG. 9, at the time 10 minutes elapsed after applying electricity to the heating part 100 of [Experimental Example], the temperature of the container 500 of [Comparative Example] decreased to 47°C, and It was confirmed that the temperature of the container 500 decreased to 51°C. And, as shown in FIG. 10, at a time 30 minutes elapsed after applying electricity to the heating part 100 of [Experimental Example], the temperature of the container 500 of [Comparative Example] decreased to 36°C, and [Experimental Example] ] It was confirmed that the temperature of the container 500 decreased to 45°C. Accordingly, it can be seen that even though the area of the planar heating element 110 is 1 cm ² , the rate of decrease in temperature of the water in the container 500 is decreased by heating the heating unit 100.

Hereinafter, a device capable of mounting and charging the heating device of the present invention will be described. Figure 11 is a schematic diagram of a mounting and charging device according to an embodiment of the present invention, Figure 12 is a schematic diagram of a mounting and charging device according to another embodiment of the present invention, Figure 13 is another embodiment of the present invention It is a schematic diagram of a mounting and charging device according to.

The mounting and charging device of the present invention includes at least one fixing support space 311, which is a space in which one or all parts of the heating device of the present invention are coupled so that the heating device of the present invention is fixedly supported ( 310); And a wireless charging unit 400 that is coupled to the fixed support unit 310 and charges the power supply unit 230 in a wireless manner. Here, the power supply unit 230 is formed to be capable of wireless charging, so that wireless power can be transmitted from the wireless charging unit to which electricity is applied from the outside to the power unit 230. Since the wireless charging technology uses a conventional technology, a detailed description will be omitted.

The fixing support 310 may be formed of a material having elasticity. The fixed support space 311 may be formed in the shape of a hole or a groove. In the above, it is described that one or all parts of the heating device of the present invention are coupled to the fixed support space 311, specifically, the cap part 240 is inserted into the fixed support space 311 in the shape of a hole, and the fixed support part In combination with 310 and positioned adjacent to the wireless charging unit 400, the heating device of the present invention is fixedly supported by the fixing support part 310, or the heating device of the present invention is fixed support space 311 in the shape of a groove. ) Is inserted into the fixed support space 311 and combined with the fixed support 310 so that the cap part 240 is positioned adjacent to the wireless charging part 400 so that the heating device of the present invention is fixed by the fixed support 310 Can be supported. Here, since the fixed support part 310 has elasticity, the fixed support part 310 provides a pressure due to elasticity to the heat generating device of the present invention that is inserted and coupled to the fixed support space 311 in the shape of a hole or groove. It is possible to increase the fixing support.

In addition, the fixing support 310 may be formed of a material having elasticity and may include a material exhibiting magnetism. Specifically, the fixing support 310 may be formed of synthetic resin or natural rubber having elasticity, and when the fixing support 310 is manufactured, a magnetic powder in synthetic resin or natural rubber is included so that the fixing support 310 is magnetic. It can be formed to stand out. In addition, the cap portion 240 may be formed of a metal such as iron so as to be coupled by magnetic force. Accordingly, by the elasticity and magnetic force of the fixing support 310, the fixing support of the fixing support 310 with respect to the heating device of the present invention can be increased.

As shown in Figure 11, the fixed support 310 is coupled to the lower portion of the wireless charging unit 400, and the fixed support space 311 is formed in the shape of a hole so that the heating module of the present invention rises and enters in a direction perpendicular to the ground. It can be formed as In addition, the mounting and charging device of the present invention is coupled with the lower portion of the fixed support portion 310, the support 320 for supporting the fixed support portion 310, and the lower portion of the support 320, and the support 320 It may be provided with a base 330, which fixes and supports. Here, the support 320 and the base 330 may be formed of metal or synthetic resin.

Male threads may be formed at both ends of the support 320, respectively. In addition, one end coupling groove, which is a groove into which one end of the support 320 is inserted, is formed in the fixed support part 310, and a female thread is formed in the one end coupling groove, and one end of the support 320 and one end of the fixed support part 310 The coupling groove can be screwed. In addition, the other end coupling groove is formed in the base 330, which is a groove through which the other end of the support plate 320 is inserted, and a female thread is formed in the other end coupling groove, so that the other end of the support plate 320 and the other end coupling groove of the base 330 This can be screwed.

When the heating device of the present invention is coupled to the fixed support 310, after the cap 240 is inserted into the hole of the fixed support 310, the cap 240 is in contact with the wireless charging unit 400 or the wireless charging unit 400 The heating device of the present invention may be fixedly supported so as to be located adjacent to). Here, the length of the hole may be shorter than or equal to the length of the cap portion 240, but is not limited thereto.

As shown in FIG. 12, the fixing support 310 is coupled to the upper portion of the wireless charging unit 400, and the fixing support space 311 is formed in the shape of a hole so that the heating device of the present invention descends and enters in a direction perpendicular to the ground. It can be formed as Accordingly, when the heating device of the present invention is coupled to the fixed support 310, after the cap 240 is inserted into the hole of the fixed support 310, the cap 240 is in contact with the wireless charging unit 400 or wirelessly The heating device of the present invention may be fixedly supported so as to be positioned adjacent to the charging unit 400. Here, the length of the hole may be shorter than or equal to the length of the cap portion 240, but is not limited thereto.

As shown in Fig. 13, the fixed support 310 is coupled to one surface of the wireless charging unit 400, and the fixed support space 311 extends the length direction of the heating device of the present invention so as to be inserted from the side of the heating device of the present invention. It may be formed in the shape of a groove formed accordingly. Accordingly, when the heating device of the present invention is coupled with the fixing support part 310, after the side portion of the heating device of the present invention is inserted into the groove of the fixing support part 310, the cap part 240 is the wireless charging part 400 The heating device of the present invention may be fixedly supported so as to be in contact with or located adjacent to the wireless charging unit 400.

The wireless charging unit 400 may include a display 410 on which a charge amount of the power supply unit 230 is displayed. In addition, information such as an estimated charging time and an available time according to the charging amount may be displayed on the display 410, as well as the amount of charge of the power supply unit 230. In addition, when a plurality of fixed support spaces 311 are formed in the fixed support part 310, the wireless charging unit 400 may charge a plurality of heating devices of the present invention. In this case, the wireless charging unit 400 may perform wireless charging on a plurality of heating devices of the present invention, and accordingly, the display 410 may display the information on each heating device.

The above description of the present invention is for illustrative purposes only, and those of ordinary skill in the art to which the present invention pertains will be able to understand that other specific forms can be easily modified without changing the technical spirit or essential features of the present invention will be. Therefore, it should be understood that the embodiments described above are illustrative and non-limiting in all respects. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as being distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the claims to be described later, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

100: heating part 110: planar heating element
120: substrate 130: cover film
140: electrode 210: housing
220: radiator 230: power supply
240: cap portion 241: clip
251: temperature sensor 252: insulation layer
260: control unit 270: button unit
271: temperature increase button 272: temperature decrease button
273: switch 310: fixed support
311: fixed support space 320: support
330: base 400: wireless charging unit
410: display 500: container

Claims (11)

A surface heating element formed by electrospinning a substrate, an organic reducing solvent, a metal salt, and a carbon fiber precursor mixed with a carbon fiber precursor on the upper surface of the substrate to form nanofibers, and then performing copper plating on the nanofibers, and the surface heating element A heating unit having an electrode coupled to both sides of the substrate, and a cover film formed on a lower surface of the substrate or an upper surface of each of the planar heating element and the electrode, and generating heat when electricity is applied;
A housing in which a space into which the heating unit is drawn is formed, and the heat of the heating unit is transferred to the surrounding fluid;
A heat dissipation unit coupled to the lower end of the housing, transferring heat of the heating unit to the surrounding fluid by contacting the fluid, and increasing heat dissipation efficiency by increasing the contact area with the fluid by forming a plurality of grooves or corrugations in the exposed area;
A power supply for applying electricity to the heating unit; And
Includes; a cap portion coupled to the upper end of the housing and forming a space into which the power supply unit is introduced,
The combination of the housing and the cap portion is in the shape of a stick,
The plate-shaped heating part is bent and folded into the housing, and the substrate formed of an insulating material faces the central axis of the housing, and the heating surface of the planar heating element faces the inner side of the housing and the heat dissipation part. As a result, the heat transfer efficiency from the heating unit to the fluid is increased.
The method according to claim 1,
The housing is a stick-type heating device, characterized in that provided with a temperature sensor on the outside.
The method according to claim 2,
And a control unit configured to receive information about the fluid temperature around the housing from the temperature sensor and control electricity applied from the power supply unit to the heating unit.
The method of claim 3,
The control unit, the stick-type heating device, characterized in that for transmitting information on one or more items selected from among a fluid temperature around the housing, a heating time of the heating unit, and a remaining charge of the power supply unit.
The method according to claim 1,
The housing is a stick-type heating device, characterized in that formed of glass, metal or synthetic resin.
The method according to claim 1,
The heat dissipation unit is a stick-type heating device, characterized in that formed of a material having a relatively higher heat transfer rate than the material forming the housing.
The method according to claim 1,
The spinning solution is aged at an aging temperature and then electrospinned to form the nanofibers, thereby uniformly forming metal nanoparticles by the metal salt on the surface of the nanofibers.
The method of claim 7,
Stick-type heating device, characterized in that the metal nanoparticles are used as a catalyst to perform electroless copper plating on the surface of the nanofibers.
delete delete In the method for manufacturing a planar heating element included in the stick-type heating device of claim 1,
A first step of preparing a spinning solution by mixing an organic reducing solvent, a metal salt, and a carbon fiber precursor;
A second step of aging the spinning solution at an aging temperature equal to or less than the boiling point of the organic reducing solvent, and uniformly generating and distributing nanoparticles by the carbon fiber precursor in the spinning solution;
A third step of electrospinning the spinning solution on a substrate to form nanofibers;
A fourth step of immersing the substrate on which the nanofibers are formed in an electroless copper plating solution to perform copper plating on the nanofibers to form a surface heating element on the substrate; And
Planar heating element manufacturing method comprising a; a fifth step of drying the planar heating element at a drying temperature.

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