CN107241821A - Wireless heater - Google Patents

Wireless heater Download PDF

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Publication number
CN107241821A
CN107241821A CN201610183318.7A CN201610183318A CN107241821A CN 107241821 A CN107241821 A CN 107241821A CN 201610183318 A CN201610183318 A CN 201610183318A CN 107241821 A CN107241821 A CN 107241821A
Authority
CN
China
Prior art keywords
resistive element
wireless
cnt
baseline
resistance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610183318.7A
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Chinese (zh)
Inventor
秋谷智巳
安倍佳照
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Material And Industrial Technology Research Institute Beijing
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Material And Industrial Technology Research Institute Beijing
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Material And Industrial Technology Research Institute Beijing filed Critical Material And Industrial Technology Research Institute Beijing
Priority to CN201610183318.7A priority Critical patent/CN107241821A/en
Publication of CN107241821A publication Critical patent/CN107241821A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/40Heating elements having the shape of rods or tubes
    • H05B3/42Heating elements having the shape of rods or tubes non-flexible
    • H05B3/44Heating elements having the shape of rods or tubes non-flexible heating conductor arranged within rods or tubes of insulating material
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/10Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/18Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor the conductor being embedded in an insulating material
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/016Heaters using particular connecting means

Abstract

The present invention relates to field of new materials, a kind of wireless heater is disclosed, this is wireless, and heater includes:Resistive element, be connected electrically in the resistive element end metalwork and the coil that is connected with the metalwork;Wherein described resistive element includes baseline and the CNT being uniformly attached on the baseline.By above-mentioned technical proposal, induced electromotive force can be produced by coil, the resistive element of CNT for allowing current to enough act on including baseline and being uniformly attached on the baseline.Resistive element containing CNT has the advantages that performance stabilization, plasticity are strong, can be adapted to carry out face heating.

Description

Wireless heater
Technical field
The present invention relates to field of new materials, in particular it relates to a kind of wireless heater.
Background technology
When electric current is by conductor, conductor can generate heat.This heat produced by electric current, is called electric heating.By electricity The heat of generation, is converted into electric energy the phenomenon of interior energy, is called electric heating.
In general, when conductor is metal, temperature more high resistance is bigger.Because, the institute of metal first With it is electrically conductive be because there is the electronics (random) of free movement inside it.When temperature is raised, this A little electrons aggravation ground vibrate back and forth, so that hindering electric current.And (partly led part for nonmetallic substance Body) for, it is smaller that temperature gets over high resistance.Reason is its internal electron motion aggravation when temperature is raised (but not vibrating back and forth), and then can be with carry charge.
It can be seen that electrical heating preferably using nonmetallic substance to realize temperature-controllable and energy-conservation.
In view of the above-mentioned problems, there is no good solution in the prior art.
The content of the invention
It is an object of the invention to provide a kind of equipment, the device structure is simple, easy to make, heating efficiency High and controllable, energy-conservation.
To achieve these goals, the present invention provides a kind of wireless heater, and this is wireless, and heater includes:
Resistive element, be connected electrically in the resistive element end metalwork and be connected with the metalwork Coil;Wherein
The resistive element includes baseline and the CNT being uniformly attached on the baseline.
Further, the baseline is polyester multifilament line.
Further, the metalwork is electrically connected by the end of resinae conductive adhesive and the resistive element Connect.
Further, the resistive element also includes resin material, and the resin material is mixed with the CNT Close or be coated in the surface of the resistive element.
Further, the resin material is makrolon.
Further, the CNT is multi-walled carbon nanotube.
Further, the resistance value of the resistive element is 1000 Ω/cm.
By above-mentioned technical proposal, induced electromotive force can be produced by coil, allow current to enough act on The resistive element for the CNT including baseline and being uniformly attached on the baseline.Electricity containing CNT Resistance body has the advantages that performance stabilization, plasticity are strong, can be adapted to carry out face heating.
Other features and advantages of the present invention will be described in detail in subsequent embodiment part.
Brief description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute a part for specification, with Following embodiment is used to explain the present invention together, but is not construed as limiting the invention. In accompanying drawing:
Fig. 1 is the wireless heater structure schematic diagram that embodiment of the present invention is provided;
Fig. 2A is the wireless heater that an example of the present invention embodiment is provided;
Fig. 2 B are the circular zoomed-in views for determining pin in Fig. 2A;
Fig. 3 A-3B are the wireless heaters that another example embodiment of the invention is provided;
Fig. 4 is the wireless heater that another example embodiment of the invention is provided;
Fig. 5 is the wireless heater that another example embodiment of the invention is provided;And
Fig. 6 is that example is influenceed the curve map of resistance change by temperature change.
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that Embodiment described herein is merely to illustrate and explain the present invention, and is not limited to this hair It is bright.
Fig. 1 is the wireless heater structure schematic diagram that embodiment of the present invention is provided.As shown in figure 1, this The wireless heater that invention embodiment is provided can include:Resistive element 100, it is connected electrically in the resistance The metalwork 200 of the end of body 100 and the coil (not shown) being connected with the metalwork;Wherein The resistive element 100 includes baseline 101 and the CNT 102 being uniformly attached on the baseline 101.
Then CNT (CNT) in embodiment of the present invention can be sprayed by being dispersed into slurry It is attached on baseline 101, forms resistive element 100.This CNT, is formed by carbon allotrope, therefore tool There is the characteristic of semiconductor, also show that the same characteristic such as graphene.By the way that CNT is disperseed, and it is attached In polyester fiber line, can make to possess uniform resistance on line.The resistive element can have due to CNT The above-mentioned characteristic having, and be suitable as wireless heater and use.This heater has negative temperature characteristic, and With excellent flexible characteristic, various shapes can be processed into, are also to be best suitable for being used for constituting table Face heater (heating matrix).The resistance value of the resistive element of the example used in embodiments is 1000 Ω/cm。
The resistance variations relational expression of the wherein resistive element that embodiment of the present invention is provided is as follows:
Δ R=k Δs T (1)
Wherein, Δ R is that resistance change, Δ T are that temperature variation, k are coefficient and are negative value.
The above-mentioned characteristic of the resistive element provided by embodiment, temperature change can cause resistance variations, And then can be powered by coil (for example, induction coil), to provide bigger electricity when temperature is raised Flow for heating.
At normal temperatures, above-mentioned resistive element has certain resistance value, and with being reduced with temperature, resistance value Become big, raised with temperature, the characteristic that resistance value diminishes.Also, resistance change is small, B constants are shown For low value, linear characteristic, so that firing rate is faster.
In embodiment, temperature computation can be carried out by below equation:
The formula is Celsius temperature reduction formula, and Tb is the temperature (degree Celsius) before temperature change, and Ta is Temperature after heating (Kelvin), Rb is the resistance (Ω) of resistive element before temperature change, and Ra is test temperature The resistance (Ω) of resistive element when spending, B is constant.Wherein, B values can be determined by experiment.For example, Experiment, by the resistance variations of every 10 DEG C measurement resistive elements, can be led under conditions of isolation humidity change Cross to solve equation and obtain B values.Can be different because of product in view of electric resistance sensor, therefore can be according to material Temperature change and humidity change characteristic, compared with reference resistor value, resistive element per unit setting B it is normal Number, from the B constants of this setting, the change of sensor resistance resistance is to voltage conversion, using normal from B Figure out the algorithm of temperature.B constants are small, are shown as linearity, while CNT has heat resistance, because This, which is characterized in that, to be heated at high temperature.
In embodiments of the present invention, baseline 101 can be polyester multifilament line, and such as material is 240Dtex-48fll polyester multifilament line.The resistive element provided in the disclosure, it is because using CNT Material, therefore when being connected with metal, can have multiple contact points, such contact, although for material The resistance value of itself does not influence, but can cause extreme influence to contact resistance.Therefore, in the present invention Embodiment in, the contact point of resistive element is set using the conducting resinl of resin system.Preferably, metal Part 200 can be electrically connected by resinae conductive adhesive with the end of the resistive element.Wherein, illustrate The material of metalwork can be copper, gold etc..
In embodiments, the resistive element can also include resin material, the resin material and the carbon Nanotube mixes or is coated in the surface of the resistive element.For example, the resin material can be poly- carbonic acid Ester (pyroconductivity:0.19W/mK), the use of polyester material can reduce humidity to wireless heater The influence of resistance.A kind of preferred embodiment, the CNT is multi-walled carbon nanotube.
The characteristics of using above-mentioned wireless heater, can by its with induction coil or other supply couplings with reality Now heat.Using various forms of resistive elements, the wireless heater of different structure may be constructed.
Fig. 2A show an example of the present invention embodiment provide wireless heater (induction coil is not Show).Wireless heater shown in Fig. 2A uses the wireless heater of solenoid type, wireless heater Resistive element is solenoid, wherein solenoidal two end points respectively connect a metalwork.In Fig. 2A In shown embodiment, metalwork is the cylinder that copper foil is rolled into, and resistive element is crimped onto on copper foil and fixed, And gold-plated circular determine in insertion cylinder is wrapped in sell.Resistive element can be with the circular pin that determines in fact The mode connected with keratotic plug, but keratotic plug connection can destroy the fibre structure of metallic object, therefore, at this In the embodiment of invention, by the way of being fastened.The circular structure such as Fig. 2 B for determining pin of citing It is shown.
Fig. 3 A-3B are that (induction coil is not for the wireless heater that provides of another of the invention example embodiment Show).Wherein Fig. 3 A are front view, and Fig. 3 B are side view.As shown in figs 3 a and 3b, in embodiment party Resistive element (or conductive fiber) is the curve being crimped between two layers of insulated substrate in formula, wherein the song Two end points of line respectively connect a metalwork.Metalwork is distribution PAD (plate) or metal wiring, is led to Electroconductive resin binding agent is crossed by resistive element and distribution PAD and metal wiring strong binding.It is wherein conductive The resistance of the resistance ratio resistive element of property resinoid bond is low.The material of the insulated substrate include it is following at least One:Epoxy resin, silicones, carborundum, aluminium nitride and makrolon.Insulated substrate can be with It is polythene material, plays a part of resistive element and air exclusion and protective resistance body.The insulation of citing The pyroconductivity of the material of substrate is as follows:Epoxy resin (pyroconductivity:0.3W/mK), silicon tree Fat system (pyroconductivity:0.15W/mK), carborundum (pyroconductivity:200W/mK), nitrogenize Aluminium (pyroconductivity:150W/mK) and makrolon (pyroconductivity:0.19W/m·K).
In the embodiment shown in Fig. 3 A-3B, the feelings of a resistive element (or conductive fiber) are shown Condition, wherein M=20, N=20, longitudinal conductive fiber radical n=6, resistance value is 12020 Ω.Wherein The resistance value of conductive fiber is 1000 Ω/cm or 100 Ω/mm.Therefore, the resistance value of resistive element can be with Calculated by below equation:
R=N+ (M × n) × 100 (3)
In various embodiments, functional layer being added between insulated substrate and resistive element can realize pair Specific wavelength is filtered out.For example, as shown in figure 4, adding infrared ray between insulated substrate and resistive element Edge filter, can be made the wireless heater of shearing infrared type, prevent infrared ray to scatter and disappear, real Now it is incubated.In other embodiments, ultraviolet cut filter can be for example added, shearing is made purple The wireless heater of outside line type.
Fig. 5 is that (induction coil does not show the wireless heater that provides of another of the invention example embodiment Go out).In the embodiment shown in Fig. 5, resistive element is equidistant net, wherein each node of the net Connect a metalwork.As shown in figure 5, by the CNT resistive elements being coated on 1K Ω wire rods according to 10 × 10 matrix is configured.Now, the reference resistor value on one side becomes to design the 1/4 of resistance value.Example Such as, the reference resistance of (100mm × 100mm) is sought.According to coordinate (0,0), coordinate (10,10) Combined resistance, it is to be understood that its reference resistor value is 2.5K Ω, is determined on the basis of with coordinate (5,5) During the sensor resistance of corner, its reference resistor value is changed into 1.25K Ω.Namely pass through 2 points of measure During reference resistance, middle resistive element combined resistance is minimum.So during with the basis of coordinate (0,0), Coordinate (10,0), coordinate (0,10), the resistance of coordinate (10,10) is impartial.In other words, example The point that power supply (or inductive coil) will such as be connected is set on the diagonal, it is possible to which entire surface is added Heat.By the way that this matrix is refined, tiny face can be not only heated, can also be according to change connection electricity The point in source, the part on opposite is heated.
It should be noted that the embodiment shown in Fig. 5 illustrate only the form of 10 × 10 matrix, In fact, the composition of this matrix can be infinitely great.The calculating of its resistance can be such as following formula:
What Fig. 6 showed example is influenceed the curve map of resistance change by temperature change.Wherein, will According to the resistive element of embodiment of the present invention on the substrate at 2.54mm intervals, according between 2.54mm × 9 Every 2 are lined up rectangular side by side, determine diagonal line resistance by resistance variations caused by temperature change. As shown in fig. 6, by using analog-digital conversion (REF=5V12bitAD), judgement can carry out 1 DEG C (or 0.5 DEG C) unit controllable temperature is heated.
By above-mentioned technical proposal there is provided a kind of wireless heater of utilization thermoelectricity inhibition effect, in element Resistive element baseline can according to temperature detection requirement be made into any suitable shape, in addition, carbon Nanotube has the temperature heating that the characteristic of semiconductor, specific heat are high, can realize wide scope.
Using the fibrous material with even resistance value for being attached with CNT, shape on the one hand can be met The demand of shape and processability, on the other hand with semiconductor the characteristics of, specific heat is high, can be achieved large-scale While temperature is heated, also with the feature of even resistance can be configured on the whole.Thermistor in the past, By multiple or measured by heat transfer medium (homogeneous metal), and embodiment of the present invention is carried The wireless heater supplied, can form the rectangular resistor matrix uniformly configured, with can carry out face temperature The feature of heating.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, still, the present invention is not limited Detail in above-mentioned embodiment, can be to the present invention in the range of the technology design of the present invention Technical scheme carry out a variety of simple variants, these simple variants belong to protection scope of the present invention.Example Such as, resistive element can be changed into conductive fiber.
It is further to note that each particular technique described in above-mentioned embodiment is special Levy, in the case of reconcilable, can be combined by any suitable means.In order to avoid need not The repetition wanted, the present invention no longer separately illustrates to various possible combinations.
In addition, various embodiments of the present invention can be combined randomly, as long as its Without prejudice to the thought of the present invention, it should equally be considered as content disclosed in this invention.

Claims (7)

1. a kind of wireless heater, it is characterised in that this is wireless, and heater includes:
Resistive element, be connected electrically in the resistive element end metalwork and be connected with the metalwork Coil;Wherein
The resistive element includes baseline and the CNT being uniformly attached on the baseline.
2. wireless heater according to claim 1, it is characterised in that the baseline is polyester Multifilament threads.
3. wireless heater according to claim 1, it is characterised in that the metalwork passes through Resinae conductive adhesive is electrically connected with the end of the resistive element.
4. wireless heater according to claim 1, it is characterised in that the resistive element is also wrapped Resin material is included, the resin material mixes or be coated in the surface of the resistive element with the CNT.
5. wireless heater according to claim 4, it is characterised in that the resin material is Makrolon.
6. wireless heater according to claim 1, it is characterised in that the CNT is Multi-walled carbon nanotube.
7. wireless heater according to claim 1, it is characterised in that the electricity of the resistive element Resistance is 1000 Ω/cm.
CN201610183318.7A 2016-03-28 2016-03-28 Wireless heater Pending CN107241821A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610183318.7A CN107241821A (en) 2016-03-28 2016-03-28 Wireless heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610183318.7A CN107241821A (en) 2016-03-28 2016-03-28 Wireless heater

Publications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110197749A (en) * 2018-02-27 2019-09-03 香港理工大学 Integrated heater and its temperature sensing method
TWI689225B (en) * 2018-11-21 2020-03-21 國立清華大學 Micro-scale wireless heater and fabrication method and applications thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101616515A (en) * 2008-06-27 2009-12-30 清华大学 Line heat source
JP2010003464A (en) * 2008-06-18 2010-01-07 Sakaguchi Dennetsu Kk Tape-shaped heater, and manufacturing method thereof
CN101868070A (en) * 2009-04-20 2010-10-20 清华大学 Line heat source
CN103171477A (en) * 2012-12-20 2013-06-26 浙江大学 Vehicle-mounted wireless heating device
CN204635772U (en) * 2015-05-27 2015-09-16 李冠霖 Wireless heating quilt
CN205648029U (en) * 2016-03-28 2016-10-12 新材料与产业技术北京研究院 Wireless heater

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010003464A (en) * 2008-06-18 2010-01-07 Sakaguchi Dennetsu Kk Tape-shaped heater, and manufacturing method thereof
CN101616515A (en) * 2008-06-27 2009-12-30 清华大学 Line heat source
CN101868070A (en) * 2009-04-20 2010-10-20 清华大学 Line heat source
CN103171477A (en) * 2012-12-20 2013-06-26 浙江大学 Vehicle-mounted wireless heating device
CN204635772U (en) * 2015-05-27 2015-09-16 李冠霖 Wireless heating quilt
CN205648029U (en) * 2016-03-28 2016-10-12 新材料与产业技术北京研究院 Wireless heater

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110197749A (en) * 2018-02-27 2019-09-03 香港理工大学 Integrated heater and its temperature sensing method
TWI689225B (en) * 2018-11-21 2020-03-21 國立清華大學 Micro-scale wireless heater and fabrication method and applications thereof
CN111212487A (en) * 2018-11-21 2020-05-29 蔡宏营 Micron-sized wireless heater and manufacturing method and application thereof
US11098955B2 (en) 2018-11-21 2021-08-24 National Tsing Hua University Micro-scale wireless heater and fabrication method and applications thereof

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Application publication date: 20171010