CN104754780A - Ceramic electric heating assembly and method for manufacturing same - Google Patents
Ceramic electric heating assembly and method for manufacturing same Download PDFInfo
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- CN104754780A CN104754780A CN201510168930.2A CN201510168930A CN104754780A CN 104754780 A CN104754780 A CN 104754780A CN 201510168930 A CN201510168930 A CN 201510168930A CN 104754780 A CN104754780 A CN 104754780A
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Abstract
The invention provides a ceramic electric heating assembly which comprises a ceramic matrix, heating film resistors, at least two groups of electrodes, screw holes and a protective layer. The heating film resistors are arranged on the ceramic matrix; the electrodes are arranged on the ceramic matrix and are electrically connected with the heating film resistors; the screw holes are formed in the ceramic matrix and are electrically connected with the electrodes; the protective layer covers the outer surfaces of the heating film resistors. The ceramic electric heating assembly has the advantages that the structures of the screw holes are formed in the electric heating assembly, accordingly, braze welding can be omitted during lead wire connection, and the ceramic electric heating assembly is simple in manufacture and low in cost.
Description
Technical field
The present invention relates to heater members field, particularly ceramic electric heating assembly and preparation method thereof.
Background technology
MCH (Metal Ceramics Heater) metallized ceramic electric heating element is that a class heat efficiency is high, stable performance, life-span are long, the new electrically heating device of safety and environmental protection, since MCH metallized ceramic electric heating element emerges, product is extensively favored by market.Its structure comprises: ceramic matrix, the heating resistor being arranged at two electrodes on ceramic matrix and being printed on ceramic matrix.Its preparation method is: be printed on ceramic curtain coating base substrate by tungsten or molybdenum manganese slurry, through hot pressing lamination, then under 1600 DEG C of nitrogen atmosphere protections, and the ceramic heating element that pottery and metal sinter jointly.
Application number be 200910038679.2 Chinese invention patent application disclose a kind of ceramic heating element, ceramic heating assembly and preparation method thereof.The method have passed and adopts HTCC High Temperature Co Fired Ceramic technique, on alumina ceramic component by silk-screen depositing conducting layer, utilize high temperature co-firing green, the mode of plating and atmosphere soldering forms a kind of ceramic heating assembly.
But utilize electric-heating assembly prepared by this HTCC High Temperature Co Fired Ceramic technique, there is obvious defect technically: first, need to utilize soldering to be fixed on ceramic component by lead-in wire, and have employed more than 2 groups ceramic chips laminating technologies, need through the repeatedly specific atmospheric conditions high temperature sintering of more than 1600 DEG C, complex process, manufacturing cost is high; Secondly, heat dispersion is poor; Electric-heating assembly prepared by the 3rd this invention, conductive heating layer uses the metal materials such as high temperature tungsten copper-manganese, the general temperature coefficient of resistance of these materials (T.C.R) is high, reach 1000 ~ 2500ppm/ DEG C, the discreteness of heating resistor is high, the drift of resistance temperature is inconsistent, dissipates obviously, increase circuit design difficulty when causing heater element to work.
Summary of the invention
The technical problem that the present invention solves is to provide a kind of ceramic electric heating assembly and preparation method thereof, and described ceramic electric heating assembly is without the need to soldering, and technique is simple, with low cost.
The invention discloses a kind of ceramic electric heating assembly, comprising:
Ceramic matrix;
Be arranged at the heating film resistance on described ceramic matrix;
Be arranged at the electrode on described ceramic matrix, described electrode has two groups at least, is formed be electrically connected with described heating film resistance;
Be arranged at the screw on described ceramic matrix, described screw and described electrode are formed and are electrically connected;
Be coated on the protective layer of described heating film resistance outer surface.
Preferably, also comprise Graphene coating, described Graphene coating is coated on the one side away from heating film resistance on described ceramic matrix.
Preferably, described screw and described electrode are connected by side conductive electrode or described electrode is arranged in screw.
Preferably, described heating film resistance is made up of nickel-chromium alloy film, oxidative ruthenium membrane, carbon film or thermosensitive material film.
Preferably, described ceramic matrix is cylinder;
Described electrode is two groups, is arranged on the sidewall of described ceramic matrix;
Described screw is connected by side conductive electrode with described electrode;
Described heating film resistance is arranged on the sidewall of described ceramic matrix outer surface;
Described electrode and described heating film resistance overlap;
Described Graphene coating is coated on the upper surface of described protective layer or described ceramic matrix.
Preferably, described ceramic matrix is slab construction,
Described heating film resistance is arranged at the surface of described ceramic matrix side;
Described electrode is arranged in screw;
Described electrode is two groups or more;
Described heating film resistance and described electrode overlap, and form electrical connection;
Described Graphene coating is coated on the surface of described ceramic matrix opposite side.
Preferably, also comprise: the insulating sleeve being arranged at the lead-in wire on described electrode and being set on described lead-in wire.
The invention also discloses a kind of preparation method of ceramic electric heating assembly, comprise the following steps:
(1) through the shaping ceramic matrix obtained with screw;
(2) on described ceramic matrix, arrange electrode, described screw and described electrode are formed and are electrically connected;
(3) by thick film silk-screen, pad pasting evaporation or sputtering sedimentation obtain with Electrode connection and the heating film resistance be arranged on described ceramic matrix;
(4) on ceramic matrix, form by thick film silk-screen the protective layer covering heating film resistance, obtain ceramic electric heating assembly.
Preferably, in described step (3), after obtaining heating film resistance, be also included in the laser cut described heating film resistance being arranged and is no less than a group.Certainly, according to reality, also can select not arrange this laser cut, to obtain higher power stage density, avoid heater block to occur heat spot, cause parts heat spot to burn inefficacy.
Preferably, in described step (3), described heating film resistance is made up of nickel-chromium alloy film, oxidative ruthenium membrane, carbon film or thermosensitive material film.
Compared with prior art, ceramic electric heating assembly of the present invention, comprising: ceramic matrix;
Be arranged at the heating film resistance on described ceramic matrix; Be arranged at the electrode on described ceramic matrix, described electrode has two groups at least, is formed be electrically connected with described heating film resistance;
Be arranged at the screw on described ceramic matrix surface, described screw and described electrode are formed and are electrically connected; Be covered in the protective layer of described heating film resistance outer surface.The present invention with the addition of the structure of screw on electric-heating assembly, avoids soldering when lead-in wire connects, prepares simple, with low cost.
Further, electric-heating assembly of the present invention has Graphene coating, good heat dissipation effect.And the heating film resistance adopted is made up of nickel-chromium alloy film, oxidative ruthenium membrane, carbon film or thermosensitive material film, the temperature characterisitic of these materials is more stable, temperature coefficient of resistance (T.C.R) can control below 300ppm/ DEG C, or, these materials are prepared to the thermistor thin film material with controlled temperature characteristic, thermo-sensitive material temperature has specific linear character, and the temperature consistency of the ceramic electric heating assembly therefore obtained is better, is easy to control.In the process preparing ceramic electric heating assembly, owing to employing described material and described its preparation process, the heating film resistance temperature of preparation can control, below 1000 DEG C, to enormously simplify preparation technology, improve preparation efficiency, also reduce cost.
Accompanying drawing explanation
Fig. 1 is the side structure schematic diagram of ceramic electric heating assembly prepared by embodiment 1;
Fig. 2 be execute example 1 prepare ceramic electric heating assembly removing protective layer after side structure schematic diagram;
Fig. 3 is the Screw hole structure schematic diagram of ceramic electric heating assembly prepared by embodiment 1;
Fig. 4 is the pin configuration schematic diagram of ceramic electric heating assembly prepared by embodiment 1;
Fig. 5 is the section cut-outs schematic diagram of ceramic electric heating assembly heating film resistance prepared by embodiment 1;
Fig. 6 is the structural representation of ceramic electric heating assembly prepared by embodiment 2;
Fig. 7 is the structural representation of ceramic electric heating assembly prepared by embodiment 3;
Fig. 8 is the structural representation of ceramic electric heating assembly prepared by embodiment 4;
Fig. 9 is the structural representation of bolt 17.
Embodiment
In order to understand the present invention further, below in conjunction with embodiment, the preferred embodiment of the invention is described, but should be appreciated that these describe just for further illustrating the features and advantages of the present invention, instead of limiting to the claimed invention.
The embodiment of the invention discloses a kind of ceramic electric heating assembly, comprising:
Ceramic matrix;
Be arranged at the heating film resistance on described ceramic matrix;
Be arranged at the electrode on described ceramic matrix, described electrode has two groups at least, is formed be electrically connected with described heating film resistance;
Be arranged at the screw on described ceramic matrix, described screw and described electrode are formed and are electrically connected;
Be covered in the protective layer of described heating film resistance outer surface.
Ceramic electric heating assembly of the present invention comprises ceramic matrix, heating film resistance, electrode, screw and protective layer.Ceramic matrix of the present invention is preferably aluminium oxide or the aluminium nitride ceramics that purity is not less than 95%, the heat dissipation ceramic component of preferred thermal conductivity >=10W/m.K.Described ceramic matrix forms given shape preferably by staying curtain coating, press mold or laser erosion, is preferably hollow cylinder, solid cylinder, rectangular flat, circular flat board, elliptical plate etc. structure.Described ceramic matrix, when shaping, forms screw.The present invention does not also do particular restriction for the generation type of screw and structure.
Described electrode is formed primarily of noble metal gold, silver, platinum, palladium, nickel, copper or its composition, usually prepares gained by thick film silk-screen mode, is formed and combine closely, and provide reliable electrically conducting function by high temperature sintering and described ceramic matrix.
Described heating film resistance adopts and is preferably made up of nickel-chromium alloy film, oxidative ruthenium membrane, carbon film or thermosensitive material film.Nickel-chromium alloy film, oxidative ruthenium membrane temperature coefficient of resistance (T.C.R) are lower, material preparation process relative ease; Carbon film or thermosensitive material film temperature characterisitic evenly controlled and there is specific temperature linearity feature, when being prepared into ceramic electric heating assembly, operating procedure is simple, preparation temperature is low, heating resistor is stablized controlled, and resistance value heat drift is little, and resistance value is concentrated consistent, resistance is controlled, can also carry out resistance adjustment.Therefore the electric-heating assembly heating uniformity prepared, reliability are high.
Described heating film resistance is arranged on described ceramic matrix, and on a side surface that can be arranged at described ceramic matrix or sidewall, the shape according to ceramic matrix is arranged.Described heating film resistance consistency is good, generate heat constant, temperature coefficient is little.The thickness of described heating film resistance is preferably 15 ~ 25 microns, is more preferably 20 ~ 24 microns.The power of described heating film resistance is preferably more than 0.5W, both can play the effect of heating, has again enough power densities and caloric value, uses reliable, safety and environmental protection.When using thermosensitive material film, by controlling or select the temperature resistance linear character of thermosensitive material film, the heating function with temp auto-controlled effect can also be realized.
Described heating film resistance is preferably strip film resistance.Described heating film resistance is at least one group, preferably can also comprise many groups, and many group heating film resistance can be series connection or parallel-connection structure.Or, also according to application and circuit design requirements, resistance can be set to noninductive, perceptual or distributed power electric resistance structure, to mate application and circuit requirement.Preferably, the cross section of described heating film resistance has an otch at least, by the cross section of precise laser cutting heating film resistance, be convenient to a part for heating film resistance directly to excise, reduce the cross-sectional area of heating film resistance, realize the adjustment of resistance.
Certainly, according to reality, also can select not arrange this laser cut, to obtain higher power stage density and initial temperature characteristic, avoid heater block to occur heat spot simultaneously, cause parts heat spot to burn inefficacy.
According to the present invention, described electrode is arranged on described ceramic matrix, and described electrode has two groups at least, is formed be electrically connected with described heating film resistance.One, described electrode is input electrode, and one is output electrode.The present invention is not particularly limited for the connected mode of electrode and heating film resistance, is electrically connected.
According to the present invention, described protective layer is coated on described heating film resistance outer surface, plays the effect of protection heating film resistance.Described protective layer can also cover part electrode.Described protective layer is preferably glass.
According to the present invention, described ceramic electric heating assembly comprises the screw being arranged at described ceramic matrix surface, and described screw and described electrode are formed and be electrically connected, and the opening part of described screw can be end face or the side of ceramic matrix.Described screw and described electrode are connected by side conductive electrode or described electrode is arranged in screw.Preferably, described ceramic electric heating assembly also comprises the lead-in wire that is arranged on described electrode and is set in insulating sleeve on described lead-in wire.Described wire and screw match.Described wire can also be bolted on described screw.Preferably, also comprise Graphene coating, described Graphene coating is arranged at the upper surface of described ceramic matrix protective layer; Or described Graphene coating is arranged at other surfaces away from heating film resistance of described ceramic matrix.
As preferred scheme one, described ceramic electric heating assembly as shown in Figure 1, comprises described ceramic matrix (11), and described ceramic matrix is cylinder, preferred cylinder inner hollow;
Be arranged at the heating film resistance (13) on described ceramic matrix, described heating film resistance is preferably made up of nickel-chromium alloy film, oxidative ruthenium membrane, carbon film or thermosensitive material film; Described heating film resistance is arranged on the sidewall of described ceramic matrix;
Be arranged at the electrode (12) on described ceramic matrix, described electrode is two groups, is arranged on the sidewall of described ceramic matrix, and described electrode and described heating film resistance overlap;
Described screw (17) is arranged at the end face of described ceramic matrix, and described screw is connected by side conductive electrode (15) with described electrode (12);
Be covered in the protective layer (14) of described heating film resistance outer surface.
In described preferred version one, can also comprise Graphene coating, described Graphene coating is coated on described ceramic matrix other surfaces away from heating film resistance, as: inner surface or the bottom surface that can be coated on cylindrical hollow.Or described Graphene coating is arranged at the upper surface of described ceramic matrix protective layer.
In described preferred version one, as shown in figs. 2 to 4, preferred heating film resistance (13) has many groups, be connected in parallel, described ceramic electric heating assembly also comprises the lead-in wire (16) be arranged on described electrode (12) and the insulating sleeve (18) be set on described lead-in wire.Described wire and screw (17) match.Described wire can also be bolted on described screw.
In described preferred version one, as shown in Figure 6, preferred described screw (17) is arranged at the side of described ceramic matrix, and described electrode is arranged in screw.Described ceramic electric heating assembly also comprises the lead-in wire be arranged on described electrode and the insulating sleeve be set on described lead-in wire.Described wire and screw match.
As preferred scheme two, as shown in Figure 7, shown ceramic electric heating assembly comprises described ceramic electric heating assembly:
Ceramic matrix (11), described ceramic matrix is slab construction; Be arranged at the heating film resistance on described ceramic matrix (11), described heating film resistance preferably by nickel-chromium alloy film, oxidative ruthenium membrane, carbon film or or thermosensitive material film make;
Described heating film resistance is arranged at the surface of described ceramic matrix side;
Described electrode is arranged in screw;
Described electrode is two groups or more;
Described heating film resistance (13) and described electrode (12) overlap, and form electrical connection;
Be covered in the protective layer (14) of described heating film resistance outer surface.
In described preferred version two, can also comprise Graphene coating, described Graphene coating is coated on the surface of described ceramic matrix opposite side or is arranged at the upper surface of described ceramic matrix protective layer.
The invention also discloses a kind of preparation method of ceramic electric heating assembly, comprise the following steps:
(1) through the shaping ceramic matrix obtained with screw;
(2) on described ceramic matrix, arrange electrode, described screw and described electrode are formed and are electrically connected;
(3) by thick film silk-screen, pad pasting evaporation or sputtering mode obtain with Electrode connection and the heating film resistive element be arranged on described ceramic matrix;
(4) form by thick film silk-screen mode the protective layer covering resistive element on a ceramic substrate, obtain ceramic electric heating assembly.
According to the present invention, first through the shaping ceramic matrix obtained with screw.Described ceramic matrix is preferably aluminium oxide or the aluminium nitride ceramics that purity is not less than 95%.Described ceramic matrix forms given shape preferably by staying curtain coating, press mold or laser erosion, be preferably the structure such as hollow cylinder, solid cylinder, rectangular flat, circular flat board, elliptical plate, when shaping, form screw, obtain the ceramic matrix with screw.
Described ceramic matrix arranges electrode, and the described method arranging electrode is preferably thick film silk-screen, and concrete steps are:
Electrode is arranged at the surface of ceramic matrix by silk screen printing, 600 ~ 1000 DEG C of high temperature sinterings, obtain the ceramic matrix being provided with electrode.
Described electrode can in the end face of ceramic matrix or side, and the concrete shape according to ceramic matrix is selected.Described screw and described electrode are formed and are electrically connected, and preferred described screw and described electrode are connected by side conductive electrode or described electrode is arranged in screw.
After electrode is set, by thick film silk-screen, pad pasting evaporation or sputtering sedimentation obtain with Electrode connection and the heating film resistance be arranged on described ceramic matrix; Described heating film resistance is nickel-chromium alloy film, oxidative ruthenium membrane, carbon film or or thermosensitive material film.When described heating film resistance is nickel-chromium alloy film, the mode preferably by sputtering sedimentation or pad pasting evaporation is arranged on ceramic matrix.The concrete steps of described film coating sputtering are preferably: nickel-chromium alloy is prepared into target, resistive film is made to arrive attachment ceramic matrix surface by evaporation, sputtering or other depositing operations, by controlling the surface deposition thickness of nickel-chromium alloy, or carry out necessary etching electroplating technology, obtain required heating film resistance.When described heating resistor film resistance is oxidative ruthenium membrane, be arranged on ceramic matrix preferably through thick film silk-screen.The concrete steps of described thick film silk-screen are preferably: ruthenium-oxide, binding agent and organic solvent etc. are prepared into electric slurry, ceramic matrix surface is deposited to by silk screen printing, sinter in the continuous tunnel furnace or Muffle furnace of the clean air atmosphere of 600 ~ 1000 DEG C, obtain heating film resistance.When described heating film resistance is carbon film, the concrete steps of described thick film silk-screen are preferably: carbon is made as slurry by filler, electrically conductive composition etc., by printed deposit to ceramic matrix surface, solidify under temperature conditions below 300 DEG C, obtain heating film resistance.When described heating resistor film resistance is thermosensitive material film, be arranged on ceramic matrix preferably through thick film silk-screen.The concrete steps of described thick film silk-screen are preferably: thermosensitive material film, additive, binding agent or solvent etc. are prepared into electric slurry, ceramic matrix surface is deposited to by silk screen printing, sinter in the atmosphere continuous tunnel furnaces of 500 ~ 1000 DEG C or Muffle furnace, carry out resistance screening, aging, obtain described heating film resistance.
After heating film resistance is set, ceramic matrix is formed by thick film silk-screen the protective layer covering heating film resistance.The method that described thick film silk-screen forms protective layer is not particularly limited, and according to mode well known to those skilled in the art, described protective layer is preferably glass or fire resistant polymer resin.
After forming protective layer, preferably also comprise the process that laser cutting repaiies resistance.Especially, the process that laser repaiies resistance also can be carried out before formation protective layer.Certainly, according to reality, also can select not arrange this laser cut, to obtain higher power stage density and initial temperature characteristic, avoid heater block to occur heat spot simultaneously, cause parts heat spot to burn inefficacy.
Preferably, the one side graphene coated coating of ceramic matrix away from heating film resistance is also included in.Especially, the method to set up of described Graphene coating, comprises the modes such as dip-coating, spraying or printing;
The described grapheme material prepared Graphene coating and select, its diameter of particle is generally nanostructure, can be prepared as water-soluble coating liquid, also can pass through the heat conduction paste composite of resin filling agent, binding agent formation, or prepare by other metal oxides or ceramic powders the paste slurry formed; Special agreement is not done in the present invention of its proportioning.
The thermal conductivity General Requirements of graphene powder is greater than 1000W/m.k, and the material of composition Graphene coating, Thermal Synthetic conductance should not be less than 25W/m.k.Especially, when graphene film layer is arranged on heater block, should have enough adhesive force and reliability, graphene film thickness is preferably greater than more than 0.2 micron, and more preferably graphene film is thick is greater than 2 microns or more.
In order to understand the present invention further, be described ceramic electric heating assembly provided by the invention and preparation method thereof below in conjunction with embodiment, protection scope of the present invention is not limited by the following examples.
Embodiment 1
The aluminium oxide ceramics matrix of tubular 95% is obtained by mold pressing; At the end face of ceramic matrix, two screws are set;
Electrode slurry is printed on the sidewall of ceramic matrix, through 850 DEG C of sintering; Form side conductive electrode by sintering between the electrode formed and screw, side conductive electrode makes electrode and screw form electrical connection.
By the ruthenium-oxide slurry of preparation, deposit on the sidewall of ceramic matrix by mode of printing, process of passing through tunnel stove 850 DEG C of pure air atmospheric condition sintering, form heating film resistance.
Glass paste is coated in the outer surface of heating film resistance by printing, 600 DEG C, process of passing through tunnel stove sintering, obtains protective layer.
Shaping heating film resistance being utilized laser cutting resistive element cross section, by reducing resistive element cross-sectional area, reaching the object of adjustment resistance.
The lead-in wire that preparation and screw match, both are threaded connection, sheathed insulating sleeve on described lead-in wire.
Graphene coating is coated on the bottom surface of described ceramic matrix.
The ceramic electric heating assembly prepared is as shown in Fig. 1 ~ 5.Fig. 1 is the side structure schematic diagram of ceramic electric heating assembly prepared by embodiment 1, and in Fig. 1,11 is ceramic matrix, and 12 is electrode, and 14 is protective layer, and 15 is side conductive electrode, and 16 is lead-in wire.
Fig. 2 be execute example 1 prepare ceramic electric heating assembly removing protective layer after side structure schematic diagram.In Fig. 2,11 is ceramic matrix, and 12 is electrode, and 13 is heating film resistance, and 15 is side conductive electrode, and 16 is lead-in wire.
Fig. 3 is the Screw hole structure schematic diagram of ceramic electric heating assembly prepared by embodiment 1, and in Fig. 3,11 is ceramic matrix, and 14 is protective layer, and 17 is screw.
Fig. 4 is the pin configuration schematic diagram of ceramic electric heating assembly prepared by embodiment 1.In Fig. 5,17 is screw, and 18 is insulating sleeve.
Fig. 5 is the section cut-outs schematic diagram of ceramic electric heating assembly heating film resistance prepared by embodiment 1.In Fig. 5,20 is laser resistor trimming otch.
Embodiment 2
The aluminium oxide ceramics matrix of tubular 95% is obtained by mold pressing; Two screws are set in the side of ceramic matrix;
Electrode slurry is printed on the sidewall of ceramic matrix, through 900 DEG C of continuous tunnel furnace sintering; Electrode and screw is made to form electrical connection.
By the ruthenium-oxide slurry of preparation, deposit on the sidewall of ceramic matrix by mode of printing, through 900 DEG C of continuous tunnel furnace sintering, form heating film resistance.
Glass paste is coated in the outer surface of heating film resistance by printing, through 600 DEG C of sintering, obtains protective layer.
The lead-in wire that preparation and screw match, both are threaded connection, sheathed insulating sleeve on described lead-in wire.
Graphene coating is coated on the bottom surface of described ceramic matrix.
Embodiment 3
The aluminium oxide ceramics matrix of 95% of slab construction with screw is obtained by laser erosion; Electrode slurry is printed in screw, through 850 DEG C of continuous tunnel furnace sintering;
The carbon membrane paste material of preparation is deposited on the surface of ceramic matrix side by mode of printing, and is overlapped on electrode, through≤300 DEG C of temperature curve solidifications, form heating film resistance; Described heating film resistance and electrode are formed and are electrically connected.
Resin slurry is coated in the upper surface of heating film resistance by printing, through oversintering, obtains protective layer.
The lead-in wire that preparation and screw match, both are threaded connection, sheathed insulating sleeve on described lead-in wire.
Graphene coating is coated on described ceramic matrix another one surface.
The ceramic electric heating assembly prepared as shown in Figure 7.Fig. 7 is the structural representation of ceramic electric heating assembly prepared by embodiment 3, and in Fig. 7,11 is ceramic matrix, and 12 is electrode, and 13 is heating film resistance, and 16 is lead-in wire, and 18 is insulating sleeve.
Embodiment 4
The aluminium oxide ceramics matrix of 95% of circular flat plate structure with screw is obtained by laser erosion; Electrode slurry is printed in screw, through 850 DEG C of continuous tunnel furnace sintering;
Thermosensitive material film, additive, binding agent or solvent etc. are prepared into electric slurry, the electric slurry of preparation is deposited to by screen printing mode on the surface of ceramic matrix side, and be overlapped on electrode, through 850 DEG C of temperature curve sintering, resistance is screened, burin-in process, obtain described heating film resistance; Laser resistor trimming is carried out to established heating film resistance; Described heating film resistance and electrode are formed and are electrically connected.
Glass paste is coated in the upper surface of heating film resistance by mode of printing, through oversintering, obtains protective layer.
The lead-in wire that preparation and screw match, both are bolted, sheathed insulating sleeve on described lead-in wire.
The ceramic electric heating assembly prepared as shown in Figure 8.Fig. 8 is the structural representation of ceramic electric heating assembly prepared by embodiment 4, and in Fig. 8,11 is ceramic matrix, and 12 is electrode, and 13 is heating film resistance, and 14 is protective layer, and 19 is bolt, and 18 is insulating sleeve.Fig. 9 is the structural representation of bolt 19.
The explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection range of the claims in the present invention.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a ceramic electric heating assembly, comprising:
Ceramic matrix;
Be arranged at the heating film resistance on described ceramic matrix;
Be arranged at the electrode on described ceramic matrix, described electrode has two groups at least, is formed be electrically connected with described heating film resistance;
Be arranged at the screw on described ceramic matrix, described screw and described electrode are formed and are electrically connected;
Be covered in the described protective layer of described heating film resistive surface.
2. ceramic electric heating assembly according to claim 1, is characterized in that, also comprises Graphene coating, and described Graphene coating is arranged at the upper surface of described ceramic matrix protective layer;
Or described Graphene coating is arranged at other surfaces away from heating film resistance of described ceramic matrix.
3. ceramic electric heating assembly according to claim 2, is characterized in that, described screw and described electrode are connected by side conductive electrode or described electrode is arranged in screw.
4. ceramic electric heating assembly according to claim 3, is characterized in that, described heating film resistance is made up of nickel-chromium alloy film, oxidative ruthenium membrane, carbon film or thermosensitive material film.
5. ceramic electric heating assembly according to claim 4, is characterized in that, described ceramic matrix is cylinder;
Described electrode is two groups, is arranged on the sidewall of described ceramic matrix;
Described screw is connected by side conductive electrode with described electrode;
Described heating film resistance is arranged on the sidewall of described ceramic matrix;
Described electrode and described heating film resistance overlap;
Described Graphene coating is covered in the upper surface of described protective layer or described ceramic matrix.
6. ceramic electric heating assembly according to claim 4, is characterized in that, described ceramic matrix is slab construction;
Described heating film resistance is arranged at the surface of described ceramic matrix side;
Described electrode is arranged in screw;
Described electrode is two groups or more;
Described heating film resistance and described electrode overlap, and form electrical connection;
Described Graphene coating is covered in the surface of described ceramic matrix opposite side.
7. the ceramic electric heating assembly described arbitrarily according to claim 1 ~ 6, is characterized in that, also comprise: the insulating sleeve being arranged at the lead-in wire on described electrode and being set on described lead-in wire.
8. a preparation method for ceramic electric heating assembly, comprises the following steps:
(1) through the shaping ceramic matrix obtained with screw;
(2) on described ceramic matrix, arrange electrode, described screw and described electrode are formed and are electrically connected;
(3) by thick film silk-screen, pad pasting evaporation or sputtering sedimentation obtain with Electrode connection and the heating film resistance be arranged on described ceramic matrix;
(4) on ceramic matrix, form by thick film silk-screen the protective layer covering heating film resistance, obtain ceramic electric heating assembly.
9. preparation method according to claim 8, is characterized in that, in described step (3), is also included in the laser cut described heating film resistance being arranged and is no less than a group after obtaining heating film resistance.
10. preparation method according to claim 8, is characterized in that, in described step (3), described heating film resistance is made up of nickel-chromium alloy film, oxidative ruthenium membrane, carbon film or thermosensitive material film.
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| CN107257589A (en) * | 2017-04-24 | 2017-10-17 | 颜宏志 | A kind of electric-heating thin film material and preparation method thereof |
| CN111207439A (en) * | 2020-01-13 | 2020-05-29 | 杭州慈源科技有限公司 | Micropore heater structure |
| CN111315051A (en) * | 2020-02-26 | 2020-06-19 | 山东华菱电子股份有限公司 | Heating resistor body slurry capable of achieving quick thermal response |
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| CN105618353A (en) * | 2016-03-11 | 2016-06-01 | 深圳东睦科技发展有限公司 | Baking finish heating plate |
| CN105979614A (en) * | 2016-06-30 | 2016-09-28 | 张飞林 | Electric heater and electronic cigarette |
| CN106073111A (en) * | 2016-08-11 | 2016-11-09 | 浙江诗杭电器有限公司 | A kind of far infrared radiation-proof electric hair drier |
| CN106108341A (en) * | 2016-08-15 | 2016-11-16 | 浙江诗杭电器有限公司 | A kind of hair-dryer |
| CN107257589A (en) * | 2017-04-24 | 2017-10-17 | 颜宏志 | A kind of electric-heating thin film material and preparation method thereof |
| CN111527790A (en) * | 2018-11-19 | 2020-08-11 | 日本特殊陶业株式会社 | Holding device and method for manufacturing holding device |
| CN111527790B (en) * | 2018-11-19 | 2022-05-06 | 日本特殊陶业株式会社 | Holding device and method for manufacturing holding device |
| CN111207439A (en) * | 2020-01-13 | 2020-05-29 | 杭州慈源科技有限公司 | Micropore heater structure |
| CN111207439B (en) * | 2020-01-13 | 2022-03-08 | 杭州慈源科技有限公司 | Micropore heater structure |
| CN111315051A (en) * | 2020-02-26 | 2020-06-19 | 山东华菱电子股份有限公司 | Heating resistor body slurry capable of achieving quick thermal response |
| CN115974592A (en) * | 2021-10-14 | 2023-04-18 | 深圳市卓力能技术有限公司 | Method for metallizing heating element, and aerosol-generating device |
| CN115974592B (en) * | 2021-10-14 | 2024-03-29 | 深圳市卓力能技术有限公司 | Method for metallizing heating element, and aerosol generating device |
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