CN212034379U - Graphite alkene film hand warmer - Google Patents
Graphite alkene film hand warmer Download PDFInfo
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- CN212034379U CN212034379U CN202020385787.9U CN202020385787U CN212034379U CN 212034379 U CN212034379 U CN 212034379U CN 202020385787 U CN202020385787 U CN 202020385787U CN 212034379 U CN212034379 U CN 212034379U
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- electric heating
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Abstract
The utility model discloses a graphite alkene film hand warmer, it relates to daily necessities technical field. The structure of the device comprises an external fabric jacket, a graphene film electric heating sheet, an infrared radiation layer, a temperature sensor, a soaking sheet and a circuit control part. The graphene thin film electric heating piece is characterized in that a soaking piece and a temperature sensor are arranged on one side of the graphene thin film electric heating piece, an infrared radiation layer is arranged on the other side of the graphene thin film electric heating piece, and a laminated structure with the temperature sensor/the soaking piece/the graphene thin film electric heating piece/the infrared radiation layer is formed from outside to inside. The utility model discloses improved graphite alkene film electric heat piece homogeneity that generates heat, improved the accuracy that temperature sensor detected the temperature, strengthened electric heat piece infrared radiation intensity, further ensured the safety in utilization, life is longer, possesses lasting heating effect, has improved and has used experience.
Description
Technical Field
The utility model relates to a daily necessities technical field, concretely relates to graphite alkene film hand warmer.
Background
Hand warmer is a necessary product for personal portable heating in winter. Traditional heat storage formula type hand warmer all contains the storage heat medium, and the product is heavy, uses inconveniently, and has serious potential safety hazard, if: the personal safety of consumers is threatened by electric leakage, explosion, scald, etc.
Aiming at the safety problem of the heat storage type hand warmer, various electric heating type hand warmer products are developed on the market. The product directly converts electric energy into heat energy through the resistance material, the power supply voltage is below 12V, and the product is small in size and light. Commonly used resistive materials include carbon fiber, graphite paper, conductive paste, CVD graphene film, and the like. The CVD graphene film has the characteristics of being ultrathin, high in flexibility, low in heat capacity, high in thermal conductivity and the like, and therefore becomes a hot material for hand warmer products. Experience and security for the guarantee uses, is provided with temperature sensor among the warm hand of graphite alkene film for detect graphite alkene film temperature that generates heat, adjust heating temperature, avoid overheated lead to scald the scheduling problem. Therefore, the reliability and the consistency of the temperature uniformity of the graphene film heating sheet and the detection temperature of the temperature sensor are very important to the use experience and the safety of the hand warmer. However, on one hand, the heating temperature of the graphene film heating sheet is not uniform, and on the other hand, the temperature sensor can only detect the local temperature of the heating sheet, so that the detected temperature and the sensible temperature of a user have deviation. The uneven heating temperature of the graphene film heating sheet comes from two points, firstly, the graphene film electric heating sheet is provided with a silver paste bus bar, and the temperature of the silver paste bus bar area is lower during heating; and secondly, the graphene film is damaged due to local stress in the use process. The deviation of this kind of detection temperature and actual temperature influences product use comfort, and serious can lead to graphite alkene film electric heat piece local high temperature and damage, safety problems such as scald even.
Besides the problem of temperature deviation, the infrared radiance of the current graphene film electric heating sheet is low, the radiation heat transfer ratio and the heat utilization rate are reduced, and improvement is needed urgently.
SUMMERY OF THE UTILITY MODEL
Not enough to exist on the prior art, the utility model aims at providing a graphite alkene film warms up hand treasured, and the electric heat piece temperature of generating heat is even, and infrared radiance is high, has further improved and has used experience and ensured the security.
In order to achieve the above purpose, the present invention is realized by the following technical solution: a graphene film hand warmer comprises an external fabric jacket (1), a graphene film electric heating sheet (2), an infrared radiation layer (3), a temperature sensor (4), a soaking sheet (5) and a circuit control part (6); a soaking piece (5) and a temperature sensor (4) are arranged on one side of the graphene thin film electric heating piece (2), an infrared radiation layer (3) is arranged on the other side of the graphene thin film electric heating piece, and a laminated structure with the temperature sensor (4), the soaking piece (5), the graphene thin film electric heating piece (2) and the infrared radiation layer (3) is formed from outside to inside;
furthermore, the soaking sheet (5) is made of metal, preferably made of copper foil or aluminum foil. The metal has high thermal conductivity coefficient, can pass to the heat fast, forms the samming face on the one hand and improves the homogeneity and the uniformity that the temperature detected, and on the other hand can lead away the high temperature district heat, avoids appearing the overheated area. Meanwhile, the metal material also has high infrared reflectivity, and can reflect the originally outward infrared rays back to the interior of the hand warmer, so that the directionality of the infrared rays is improved, and the utilization efficiency of infrared energy is increased;
further, the soaking piece (5) is arranged above the graphene thin film electric heating piece and faces outwards in the hand warmer jacket, namely towards the environment;
further, the temperature sensor (4) is arranged above the soaking piece and is in direct contact with the soaking piece;
further, the infrared radiation layer (3) is arranged below the graphene film electric heating sheet and faces towards the inner side in the hand warmer jacket, namely the hand direction of a user;
further, the infrared radiation layer (3) is formed on the surface below the graphene thin film electric heating sheet in a coating mode, and preferably the coating mode is spraying.
The utility model has the advantages that: the metal heat-equalizing layer is arranged above the graphene film electric heating sheet, and the temperature-equalizing layer is formed, so that the uniformity, consistency and reliability of the temperature detected by the temperature sensor are improved; the high infrared reflection function of the metal heat-equalizing layer is combined with the infrared radiation layer, so that the utilization efficiency of infrared rays is improved. The temperature adjustment accuracy of the graphene film hand warmer product is improved, the use experience is further improved, and the safety guarantee is enhanced; and the utilization of infrared energy is more efficient, and the service life is prolonged.
Drawings
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments;
fig. 1 is a schematic structural view of the present invention;
fig. 2 is a heated infrared image when the thermal uniforming layer is not attached.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
Referring to fig. 1 to 2, the present embodiment adopts the following technical solutions:
and 2, attaching the other side of the graphene film electric heating piece to a 25-micron thick copper foil through a glue layer to obtain a copper foil/glue layer/graphene film electric heating piece/infrared radiation layer structure. Wherein the copper foil can be replaced by aluminum foil. The material of the adhesive layer is hot melt adhesive such as polyvinyl butyral (PVB), ethylene-vinyl acetate copolymer (EVA), thermoplastic polyurethane and the like, or polyacrylate pressure-sensitive adhesive. The temperature uniformity of the graphene film electric heating sheet is obviously improved after the metal heat-equalizing layer is adhered. The silver paste dark area of the graphene thin film electric heating sheet which is not attached with the soaking sheet is obviously visible in the infrared heating image, and the temperature difference (3-5 ℃) exists in the whole graphene heating area; after the copper foil heat-equalizing layer is attached, a silver paste dark area in a heating infrared image disappears, and the temperature difference is reduced (about 1 ℃);
and 4, connecting the obtained temperature sensing patch/copper foil/adhesive layer/graphene film electric heating sheet/infrared radiation layer structure with other circuit components such as a power supply and the like, putting the temperature sensing patch/copper foil/adhesive layer/graphene film electric heating sheet/infrared radiation layer structure into a fabric jacket interlayer, enabling the copper foil to face outwards and the infrared radiation layer to face inwards, and completing the preparation of the graphene film hand warmer.
It is noted that the preparation sequence of the infrared radiation layer and the copper foil heat-equalizing layer in the steps 1 and 2 is replaceable, namely the copper foil heat-equalizing layer is attached firstly, and then the infrared radiation layer is prepared by spraying, so that the final effect is not influenced.
The technical advantages of this embodiment are:
(1) the safety is high: the graphene film electric heating piece heats the surface temperature to be homogenized in the hand warmer through the metal uniform heating layer, the accuracy, the consistency and the stability of the temperature detected by the temperature sensor are improved, the reliable guarantee is provided for accurately controlling the heating temperature of the temperature control circuit, the occurrence of a local overheating area can be effectively avoided, and the use safety is further enhanced.
(2) The service life is long: through set up the infrared radiation layer on graphite alkene film electric heat piece surface, increased infrared radiation heat transfer intensity, not only improved heat transfer efficiency and infrared energy utilization efficiency, prolonged the power and used long time, simultaneously because infrared radiation's increase, promoted user's comfort.
According to the specific embodiment, the CVD graphene film is used as an electric-heat conversion material, and the laminated structure of the uniform-heat layer and the infrared radiation layer is added, so that the personal heating safety is further guaranteed, the heat supply uniformity and the use comfort are enhanced, and the electric-heat conversion device has a wide market application prospect.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. A graphene film hand warmer comprises an external fabric jacket (1), a graphene film electric heating sheet (2), an infrared radiation layer (3), a temperature sensor (4), a soaking sheet (5) and a circuit control part (6), and is characterized in that the soaking sheet (5) and the temperature sensor (4) are arranged on one side of the graphene film electric heating sheet (2), the infrared radiation layer (3) is arranged on the other side of the graphene film electric heating sheet, and a laminated structure with the temperature sensor (4), the soaking sheet (5), the graphene film electric heating sheet (2) and the infrared radiation layer (3) is formed from outside to inside;
furthermore, the soaking sheet (5) is made of copper foil or aluminum foil;
further, the soaking piece (5) is arranged above the graphene thin film electric heating piece and faces outwards in the hand warmer jacket, namely towards the environment;
further, the temperature sensor (4) is arranged above the soaking piece and is in direct contact with the soaking piece;
further, the infrared radiation layer (3) is arranged below the graphene film electric heating sheet and faces towards the inner side in the hand warmer jacket, namely the hand direction of a user;
further, the infrared radiation layer (3) is formed on the surface below the graphene film electric heating sheet in a coating mode, and the coating mode is spraying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020385787.9U CN212034379U (en) | 2020-03-24 | 2020-03-24 | Graphite alkene film hand warmer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020385787.9U CN212034379U (en) | 2020-03-24 | 2020-03-24 | Graphite alkene film hand warmer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212034379U true CN212034379U (en) | 2020-11-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020385787.9U Expired - Fee Related CN212034379U (en) | 2020-03-24 | 2020-03-24 | Graphite alkene film hand warmer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212034379U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114828312A (en) * | 2022-04-18 | 2022-07-29 | 青岛大学 | Multimode flexible textile-based active heating intelligent fabric and preparation method thereof |
| CN116669240A (en) * | 2023-07-28 | 2023-08-29 | 绵阳中物烯科技有限公司 | Resistor and heating system based on subregion that graphite alkene generates heat |
-
2020
- 2020-03-24 CN CN202020385787.9U patent/CN212034379U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114828312A (en) * | 2022-04-18 | 2022-07-29 | 青岛大学 | Multimode flexible textile-based active heating intelligent fabric and preparation method thereof |
| CN116669240A (en) * | 2023-07-28 | 2023-08-29 | 绵阳中物烯科技有限公司 | Resistor and heating system based on subregion that graphite alkene generates heat |
| CN116669240B (en) * | 2023-07-28 | 2023-10-17 | 绵阳中物烯科技有限公司 | Resistor and heating system based on subregion that graphite alkene generates heat |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201127 Termination date: 20210324 |
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| CF01 | Termination of patent right due to non-payment of annual fee |