CN213880309U - Carbon nano heating element - Google Patents
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- CN213880309U CN213880309U CN202023226711.0U CN202023226711U CN213880309U CN 213880309 U CN213880309 U CN 213880309U CN 202023226711 U CN202023226711 U CN 202023226711U CN 213880309 U CN213880309 U CN 213880309U
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Abstract
The utility model discloses a carbon nanometer heating element has solved carbon nanometer heating element and has generated heat uneven problem, and the technical scheme who solves this problem mainly includes two carbon nanometer retes that are used for generating heat and the insulating layer of parcel carbon nanometer rete with the isolation, two carbon nanometer retes stack the setting, and carbon nanometer rete has a plurality of carbon nanotube that set up along carbon nanometer rete interval, the carbon nanotube dislocation set on two carbon nanometer retes is with increase carbon nanometer heating element's the density that generates heat. Simultaneously, the utility model also provides a heating container who has this carbon nanometer heating element. The utility model discloses the carbon nanotube on two carbon nanometer rete in the well incompletely shelters from in the vertical direction of carbon nanometer rete, has increased the bulk heating density of carbon nanometer heating element surface, generates heat more evenly.
Description
Technical Field
The utility model relates to a household electrical appliances technical field, especially a carbon nanometer heating element.
Background
The carbon nanometer heating element comprises a carbon nanometer film layer and an insulating layer wrapping the carbon nanometer film layer, and the carbon nanometer film layer and the insulating layer are flexible layers and can be bent and folded, so that the surfaces of various heating containers can be conveniently attached to heat, and the carbon nanometer heating element is convenient to carry and wide in application range. In order to improve the heating power of the carbon nano-heating element, the prior art provides a two-dimensional nano-carbon heating element (patent No. 2011521137385.2), which comprises two or more film-shaped electric heating structures, and according to the requirements of practical application, the film-shaped electric heating structures can be arranged side by side or in a stacked manner, or can be arranged in a partially overlapped manner.
SUMMERY OF THE UTILITY MODEL
The utility model aims to reach the purpose be exactly provide a carbon nanometer heating element and heating container, the carbon nanotube on two carbon nanometer retes is incompletely sheltered from on the vertical direction of carbon nanometer rete, has increased the bulk heating density of carbon nanometer heating element surface, generates heat more evenly.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a carbon nanometer heating element, includes two carbon nanometer retes that are used for generating heat and the insulating layer of parcel carbon nanometer rete with the isolation, two carbon nanometer retes stack the setting, and carbon nanometer rete has a plurality of carbon nanotube that set up along carbon nanometer rete interval, carbon nanotube dislocation set on two carbon nanometer retes is with increase carbon nanometer heating element's the density that generates heat.
Furthermore, each carbon nanotube on the carbon nano-film layer is arranged side by side along the carbon nano-film layer, and the arrangement directions of the carbon nanotubes on the two carbon nano-film layers are the same.
Furthermore, the carbon nano-heating element is of a planar sheet structure after being unfolded, and projections of the carbon nano-tubes on the two carbon nano-film layers in the direction vertical to the carbon nano-heating element are not shielded.
Furthermore, the carbon nano-heating element is of a planar sheet structure after being unfolded, and the projections of the carbon nano-tubes on the two carbon nano-film layers in the direction perpendicular to the carbon nano-heating element are arranged in a crossed manner.
Further, the two carbon nano-film layers are arranged in parallel or in series; or, the carbon nanotubes on the carbon nanotube film layer are arranged in parallel, and the length and the width of the carbon nanotubes on the same carbon nanotube film layer are equal; or, the carbon nanotubes on the carbon nanotube film layer are arranged in series.
Further, the minimum distance S between two adjacent carbon nanotubes on the carbon nano film layer is more than or equal to 4 mm; or the area of the insulating layer is larger than that of the carbon nano film layer, and the edge distance D between the carbon nano film layer and the insulating layer is more than or equal to 4 mm; or, the carbon nano-film layer also comprises an electrode and a lead, one end of the lead is electrically connected with the electrode, the other end of the lead extends out of the insulating layer along the carbon nano-film layer, the carbon nano-tubes of the same carbon nano-film layer are all electrically contacted with the electrode, and the distance L between the joint of the lead and the electrode and the edge of the insulating layer is more than or equal to 8 mm.
Furthermore, the insulating layer comprises an outer insulating layer and an inner insulating layer, the inner insulating layer is located between two adjacent carbon nano film layers, and the outer insulating layer covers the side faces, facing outwards, of the carbon nano film layers.
Further, the outer insulating layer comprises a base insulating layer, a first additional insulating layer and a second additional insulating layer which are distributed from inside to outside, and the outer insulating layer is abutted against the carbon nano film layer through the base insulating layer.
Further, the insulating layer is a polyimide film and/or high-temperature glass.
Furthermore, the carbon nanotubes of the same carbon nanotube film layer are arranged in parallel or in series; or, the carbon nano-heating element at least comprises a first carbon nano-tube, a second carbon nano-tube, a third carbon nano-tube and a fourth carbon nano-tube, the first carbon nano-tube and the second carbon nano-tube are positioned on the first carbon nano-film layer, the third carbon nano-tube and the fourth carbon nano-tube are positioned on the second carbon nano-film layer, the first carbon nano-tube and the third carbon nano-tube are connected in parallel or in series, and the second carbon nano-tube and the fourth carbon nano-tube are connected in parallel or in series.
After the technical scheme is adopted, the utility model has the advantages of as follows:
1. firstly, the texture of carbon nanometer rete and insulating layer is soft to both can fold and crooked lamellar structure, and not only the whole occupation space of carbon nanometer heating element is little, the quality is light, conveniently wraps up in addition or hugs closely various heating vessel and heats, and application scope is wide, does benefit to and goes out to carry, and simultaneously, the electrothermal conversion rate of carbon nanometer rete is high, has guaranteed heating efficiency. Secondly, the carbon nano-film layer heats through the carbon nano-tube of tubular structure, and increase current flow length on the carbon nano-film layer improves heating efficiency, promotes its whole even that generates heat, and simultaneously, carbon nano-tube sets up at the interval on the carbon nano-film layer, avoids producing the creepage between the adjacent carbon nano-tube, guarantees whole carbon nano-heating element's safe in utilization. Finally, two carbon nanometer rete stack the setting, so the carbon nanotube on the carbon nanometer heating element of unit area is more, has increased whole carbon nanometer heating element's heating power, simultaneously, the carbon nanotube dislocation set on two carbon nanometer rete, and the carbon nanotube on two carbon nanometer rete does not shelter from in the vertical direction of carbon nanometer rete completely promptly, has increased the whole heating density of carbon nanometer heating element surface, and it is more even to generate heat.
2. A plurality of carbon nanotube set up side by side on same carbon nanometer rete, not only easily guarantee the interval between the carbon nanotube, make things convenient for processing and the installation of carbon nanometer rete, and carbon nanotube's length sum is longer on single carbon nanometer rete, do benefit to the heating efficiency who improves single carbon nanometer rete, and simultaneously, carbon nanotube's on two carbon nanometer rete sets up the direction the same, not only the shape structure of two carbon nanometer rete is the same, can be with batch rapid tooling, and connect electrical components and parts on two carbon nanometer rete to be located same one side or relative both sides of carbon nanometer heating element, do benefit to the insulating layer in the sealed of edge.
3. The projections of the carbon nanotubes on the two carbon nano-film layers in the direction vertical to the carbon nano-heating element are not blocked. In the vertical direction of the carbon nano-film layers, the carbon nano-tubes on one carbon nano-film layer can be completely exposed from the space between the carbon nano-tubes on the other carbon nano-film layer, so that the phenomenon that the carbon nano-tubes are shielded by the carbon nano-film layer and overheated to cause uneven heating is avoided, and the heating density of the carbon nano-heating element is maximized.
4. The projections of the carbon nanotubes on the two carbon nano-film layers in the direction perpendicular to the carbon nano-heating element are arranged in a crossed manner, namely the carbon nanotubes on the two carbon nano-film layers are arranged in different directions, so that the bending and folding handfeel of the whole carbon nano-film heating element in different directions are prevented from being too different, the strength of the carbon nano-heating element is ensured, meanwhile, the bending and folding state is easy to keep, and the carbon nano-film layers can be attached to containers in various shapes.
5. When two carbon nano-film layers are arranged in parallel, the two carbon nano-film layers are mutually independent, the carbon nano-heating element is prevented from being completely out of use after one of the carbon nano-film layers is damaged, and the reliability is higher. When two carbon nano-film layers are arranged in series, the structure is simpler, and the wiring is more convenient.
When the carbon nanotubes on the carbon nanotube film are arranged in parallel, the length and the width of the carbon nanotubes on the same carbon nanotube film are equal. The over-high current caused by the over-low resistance of a certain carbon nano tube is avoided, the over-high local heat productivity is prevented, and the uniform heat productivity is ensured.
When the carbon nanotubes on the carbon nanotube film are serially arranged, the length and width of each carbon nanotube can be freely arranged and adjusted according to the outer surface of the carbon nano-heating element.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
FIG. 1 is an exploded view of a carbon nano-heating element in accordance with one embodiment;
FIG. 2 is a cross-sectional view of a carbon nano-heating element in accordance with an embodiment of the present invention;
FIG. 3 is a schematic diagram of the internal structure of a carbon nano-heating element according to a first embodiment of the present invention;
FIG. 4 is an exploded view of a carbon nano-heating element according to the first embodiment (II);
fig. 5 is a structural view of a heating container in the second embodiment.
Detailed Description
Example one
As shown in fig. 1 to fig. 3, the present embodiment provides a carbon nano-heating element, which includes two carbon nano-film layers 1 for generating heat and an insulating layer 2 wrapping the carbon nano-film layers 1 for isolation, the two carbon nano-film layers 1 are stacked, the carbon nano-film layer 1 has a plurality of carbon nanotubes 11 arranged along the carbon nano-film layers 1 at intervals, and the carbon nanotubes 11 on the two carbon nano-film layers 1 are arranged in a staggered manner to increase the heat generation density of the carbon nano-heating element.
Firstly, the texture of carbon nanometer rete 1 and insulating layer 2 is soft to both can fold and crooked lamellar structure, and not only the whole occupation space of carbon nanometer heating element is little, the quality is light, conveniently wraps up in addition or hugs closely various containers and heats, and application scope is wide, does benefit to going out to carry, and simultaneously, carbon nanometer rete 1's electrothermal conversion rate is high, has guaranteed heating efficiency. Secondly, carbon nano-film layer 1 heats through tubular structure's carbon nanotube 11, and increase current flow length on carbon nano-film layer 1 improves heating efficiency, promotes its whole even that generates heat, and simultaneously, carbon nanotube 11 sets up at the interval on carbon nano-film layer 1, avoids producing the creepage between the adjacent carbon nanotube 11, guarantees whole carbon nano-heating element's safe in utilization. Finally, two carbon nanometer rete 1 stack settings, so carbon nanotube 11 on the carbon nanometer heating element of unit area is more, has increased whole carbon nanometer heating element's heating power, simultaneously, carbon nanotube 11 dislocation set on two carbon nanometer rete 1, and carbon nanotube 11 on two carbon nanometer rete 1 is not sheltered from in the vertical direction of carbon nanometer rete 1 completely promptly, has increased the whole heating density of carbon nanometer heating element surface, and it is more even to generate heat.
In this embodiment, the carbon nanotubes 11 on the carbon nanotube film layer 1 are arranged side by side along the carbon nanotube film layer 1, and the arrangement directions of the carbon nanotubes 11 on the two carbon nanotube film layers 1 are the same. A plurality of carbon nanotube 11 set up side by side on same carbon nanometer rete 1, not only easily guarantee the interval between the carbon nanotube 11, make things convenient for processing and the installation of carbon nanometer rete 1, and the length sum of carbon nanotube 11 is longer on single carbon nanometer rete 1, do benefit to the heating efficiency who improves single carbon nanometer rete 1, and simultaneously, the carbon nanotube 11 on two carbon nanometer rete 1 sets up the direction the same, not only two carbon nanometer rete 1's shape structure is the same, can be with batch rapid tooling, and connect electrical components and parts on two carbon nanometer rete 1 to be located same one side or relative both sides of carbon nanometer heating element, do benefit to the reliable sealed of relative edge of insulating layer 2.
Specifically, the carbon nano-heating element is a planar sheet structure after being unfolded, and projections of the carbon nanotubes 11 on the two carbon nano-film layers 1 in a direction perpendicular to the carbon nano-heating element are not shielded from each other. In the vertical direction of the carbon nano-film layer 1, the carbon nanotubes 11 on one carbon nano-film layer 1 can be completely exposed from the space between the carbon nanotubes 11 on the other carbon nano-film layer 1, so that the phenomenon that the two are shielded and overheated to cause uneven heating is avoided, and the heating density of the carbon nano-heating element is maximized.
It is understood that the carbon nanotubes 11 on the two carbon nanotube film layers 1 may also be arranged to intersect in the projection perpendicular to the direction of the carbon nanotube heating element. The carbon nanotube 11 on two carbon nanometer rete 1 sets up the direction difference promptly, avoids whole carbon nanometer heating element to feel with folding the bending in the equidirectional not too big that differs, has guaranteed carbon nanometer heating element's intensity, easily keeps crooked folding state simultaneously, and convenient design, carbon nanometer rete 1 can be laminated with the container of various shapes.
In this embodiment, the two carbon nano-film layers 1 may be arranged in parallel, so that the two carbon nano-film layers 1 are independent from each other, thereby preventing the carbon nano-heating element from being completely unusable after one of the carbon nano-film layers 1 is damaged, and improving reliability. Certainly, two carbon nano-film layers 1 can also be arranged in series, so that the structure is simpler and the wiring is more convenient.
In this embodiment, the carbon nanotubes 11 on the carbon nanotube film layer 1 are arranged in parallel, and in order to ensure uniform heat generation, the length and the width of the carbon nanotubes 11 on the same carbon nanotube film layer 1 are equal. Excessive current caused by too small resistance of a carbon nanotube 11 is avoided, and excessive local heat generation is prevented. Of course, the carbon nanotubes 11 on the carbon nanotube film layer 1 may also be arranged in series, so that the length and width of each carbon nanotube 11 can be freely set and adjusted according to the outer surface of the carbon nanotube heating element.
In this embodiment, in order to prevent the two adjacent carbon nanotubes 11 from being too close to each other to cause electric leakage, the minimum distance S between the two adjacent carbon nanotubes 11 on the carbon nanotube film 1 is not less than 4 mm.
Meanwhile, in order to ensure the use safety, the area of the insulating layer 2 is larger than that of the carbon nano film layer 1, and the edge distance D between the carbon nano film layer 1 and the insulating layer 2 is more than or equal to 4 mm. Thereby insulating layer 2 can cover the carbon nanotube 11 that generates heat completely, and the security is good, simultaneously, also does benefit to the edge of insulating layer 2 and can glue sealedly in the outside of carbon nano film layer 1, prevents that the high temperature of carbon nano film layer 1 from causing the sealed inefficacy of insulating layer 2.
The carbon nano-film layer 1 further comprises an electrode 12 and a lead 13, one end of the lead 13 is electrically connected with the electrode 12, the other end of the lead 13 extends out of the insulating layer 2 along the carbon nano-film layer 1, the carbon nano-tubes 11 of the same carbon nano-film layer 1 are all in electrical contact with the electrode 12, centralized electrification of the carbon nano-tubes 11 is facilitated, and meanwhile, in order to guarantee safety in use, the distance L between the connection position of the lead 13 and the electrode 12 and the edge of the insulating layer 2 is larger than or equal to 8 mm.
In this embodiment, the insulating layer 2 includes outer insulating layer 21 and inner insulating layer 22, and inner insulating layer 22 is located between two adjacent carbon nano film layers 1 to the creepage takes place for carbon nanotube 11 on two carbon nano film layers 1 of separation, and the security is high, and simultaneously, outer insulating layer 21 covers the side outwards on carbon nano film layer 1, prevents carbon nanotube 11 on the user direct contact carbon nano film layer 1.
To further ensure the safety of the outer insulating layer 21, the outer insulating layer 21 includes a base insulating layer 211, a first additional insulating layer 212, and a second additional insulating layer 213 distributed from inside to outside, and the outer insulating layer 21 abuts against the carbon nano film layer 1 through the base insulating layer 211. Not only can the outer insulating layer 21 be effectively prevented from being easily worn out, but also the base insulating layer 211, the first additional insulating layer 212 and the second additional insulating layer 213 can be made of different materials to realize different functions, so that the user experience is better.
In this embodiment, insulating layer 2 is the polyimide film, and not only high temperature resistance is good, and the material is soft and thinner moreover, and is better with the surface laminating of container after folding. Of course, as shown in fig. 4, the insulating layer 2 may be made of high temperature glass 3, and the high temperature glass 3 may specifically be borosilicate glass or quartz glass, and it is understood that the insulating layer 2 may be partially made of polyimide film and partially made of high temperature glass 3.
Furthermore, the carbon nanotubes of the same carbon nanotube film layer are arranged in parallel or in series; or, the carbon nano-heating element at least comprises a first carbon nano-tube, a second carbon nano-tube, a third carbon nano-tube and a fourth carbon nano-tube, the first carbon nano-tube and the second carbon nano-tube are positioned on the first carbon nano-film layer, the third carbon nano-tube and the fourth carbon nano-tube are positioned on the second carbon nano-film layer, the first carbon nano-tube and the third carbon nano-tube are connected in parallel or in series, and the second carbon nano-tube and the fourth carbon nano-tube are connected in parallel or in series.
Example two
As shown in fig. 5, the present embodiment provides a heating container, which includes a container body 4, and further includes any one of the carbon nano-heating elements a, which wraps the container body 4 and heats the container body 4. Thereby heating container's whole is small, conveniently carries, and the molding can be more various, and simultaneously, carbon nanometer heating element an is inseparabler with vessel 4's contact, and area of contact is big, not only can heat vessel 4's bottom surface, can also heat vessel 4's lateral wall, and heating efficiency is high, and the heating is more even.
Other contents not described in this embodiment may refer to embodiment one.
The traditional metal heating wire and heating bar are generally used by being packaged in a tube through MgO powder, and the metal heating wire or the carbon fiber heating wire is also made into a tubular shape and then fixed on a container, such as an electric kettle, a soybean milk machine and other products. However, the carbon nanotube film is a heating element which can uniformly heat as thin as 5um, and the carbon nanotube film is soft and can be bent at will, so that the electrothermal conversion efficiency of the carbon nanotube film is more than 99% when the carbon nanotube film is used as a heating element; wherein the electrothermal radiation efficiency reaches 60%; the temperature of the heating body is much lower than that of the resistance wire under the same temperature; the heating temperature of the electric heating element can reach 1200 ℃ in a closed environment; and the heat conductivity coefficient of the ceramic material is more than 5000W/mk, so that the ceramic material can uniformly generate heat.
Because the carbon nano tube film is very thin and only about 5um-10um, the thermal inertia of the electric heating element of the carbon nano film is small, and the heat conduction is fast. The surface is heated and the heating is uniform, the heat transfer temperature difference is small when the heating element is used, and the heated object is not easy to stick on the pan.
The carbon nanotube film can be provided with a temperature detection and protection device, such as a temperature sensor, a temperature controller, a fuse link and the like, after being installed, so that the temperature of the heating element can be detected, the power of the heating element can be controlled, the temperature of the heating element can be prevented from being too high, and the situations of dry burning, overheating, bottom pasting in a heated container and the like of a product can be avoided.
The carbon nanotube heating element can be disposed on a spherical or cylindrical-like container due to its flexible and heel-shaped characteristics, and of course, can be disposed on a plane or a rectangular container, and the rectangular container should have a round angle larger than R0.5. The electric rice box is suitable for being arranged on a spherical body and a plane, such as the bottom surface and the side surface of a cup body of a soybean milk machine, the bottom surface and the side surface of an electric rice cooker and the bottom side surface of the electric rice box; the effect of three-dimensional heating is achieved.
The carbon nanotube heating element can be directly arranged on the insulating surface of the non-metal container, such as on a transparent glass surface and a ceramic plate, and the carbon nanotube is directly packaged on the insulating container.
Thus, not only the space occupied for heating is reduced, but also the heat capacity of the whole heating part is reduced and the volume is reduced; the heat transfer efficiency is improved. And the heat transfer area can be enlarged by utilizing the carbon nano tube, so that the temperature of a heating part is reduced and the pan pasting is lightened under the condition of the same heat transfer power.
In addition to the preferred embodiments described above, other embodiments of the present invention are also possible, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, which should fall within the scope of the present invention defined by the appended claims.
Claims (10)
1. The carbon nano heating element is characterized by comprising two carbon nano film layers for generating heat and an insulating layer for wrapping the carbon nano film layers to isolate, wherein the two carbon nano film layers are stacked and arranged, the carbon nano film layers are provided with a plurality of carbon nano tubes arranged at intervals along the carbon nano film layers, and the carbon nano tubes on the two carbon nano film layers are arranged in a staggered mode to increase the heating area of the carbon nano heating element.
2. The carbon nanotube heating element of claim 1, wherein the carbon nanotubes of the carbon nanotube film layer are arranged side by side along the carbon nanotube film layer, and the arrangement direction of the carbon nanotubes of the two carbon nanotube film layers is the same.
3. The carbon nano-heating element according to claim 2, wherein the carbon nano-heating element is a planar sheet structure after being unfolded, and projections of the carbon nanotubes on the two carbon nano-film layers in a direction perpendicular to the carbon nano-heating element are not blocked by each other.
4. The carbon nano-heating element according to claim 1, wherein the carbon nano-heating element is a planar sheet structure after being unfolded, and projections of the carbon nanotubes on the two carbon nano-film layers in a direction perpendicular to the carbon nano-heating element are arranged in a crossed manner.
5. The carbon nanolayer heating element of claim 1, wherein the two carbon nanolayer films are disposed in parallel or in series; or, the carbon nanotubes on the carbon nanotube film layer are arranged in parallel, and the length and the width of the carbon nanotubes on the same carbon nanotube film layer are equal; or, the carbon nanotubes on the carbon nanotube film layer are arranged in series.
6. The carbon nano-heating element according to claim 1, wherein the minimum spacing S between two adjacent carbon nanotubes on the carbon nano-film layer is not less than 4 mm; or the area of the insulating layer is larger than that of the carbon nano film layer, and the edge distance D between the carbon nano film layer and the insulating layer is more than or equal to 4 mm; or, the carbon nano-film layer also comprises an electrode and a lead, one end of the lead is electrically connected with the electrode, the other end of the lead extends out of the insulating layer along the carbon nano-film layer, the carbon nano-tubes of the same carbon nano-film layer are all electrically contacted with the electrode, and the distance L between the joint of the lead and the electrode and the edge of the insulating layer is more than or equal to 8 mm.
7. The carbon nanolayer heating element of any one of claims 1 to 6, wherein the insulating layer comprises an outer insulating layer and an inner insulating layer, the inner insulating layer is located between two adjacent carbon nanolayer films, and the outer insulating layer covers the outward facing side of the carbon nanolayer films.
8. The carbon nano-heating element according to claim 7, wherein the outer insulating layer comprises a base insulating layer, a first additional insulating layer and a second additional insulating layer distributed from inside to outside, and the outer insulating layer abuts against the carbon nano-film layer through the base insulating layer.
9. The carbon nano-heating element according to any one of claims 1 to 6, wherein the insulating layer is a polyimide film and/or a high temperature glass.
10. The carbon nano-heating element according to claim 1, wherein the carbon nanotubes of the same carbon nano-film layer are arranged in parallel or in series; or, the carbon nano-heating element at least comprises a first carbon nano-tube, a second carbon nano-tube, a third carbon nano-tube and a fourth carbon nano-tube, the first carbon nano-tube and the second carbon nano-tube are positioned on the first carbon nano-film layer, the third carbon nano-tube and the fourth carbon nano-tube are positioned on the second carbon nano-film layer, the first carbon nano-tube and the third carbon nano-tube are connected in parallel or in series, and the second carbon nano-tube and the fourth carbon nano-tube are connected in parallel or in series.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023226711.0U CN213880309U (en) | 2020-12-28 | 2020-12-28 | Carbon nano heating element |
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| CN202023226711.0U CN213880309U (en) | 2020-12-28 | 2020-12-28 | Carbon nano heating element |
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| CN213880309U true CN213880309U (en) | 2021-08-03 |
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| CN202023226711.0U Active CN213880309U (en) | 2020-12-28 | 2020-12-28 | Carbon nano heating element |
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