CN107152715A - Warmer, surface insulation type PTC electric heaters and preparation method thereof - Google Patents
Warmer, surface insulation type PTC electric heaters and preparation method thereof Download PDFInfo
- Publication number
- CN107152715A CN107152715A CN201710530730.6A CN201710530730A CN107152715A CN 107152715 A CN107152715 A CN 107152715A CN 201710530730 A CN201710530730 A CN 201710530730A CN 107152715 A CN107152715 A CN 107152715A
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- electrode piece
- ptc
- electric heaters
- fever tablets
- insulation type
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- 238000009413 insulation Methods 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 206010037660 Pyrexia Diseases 0.000 claims abstract description 64
- 239000011248 coating agent Substances 0.000 claims abstract description 45
- 238000000576 coating method Methods 0.000 claims abstract description 45
- 238000005253 cladding Methods 0.000 claims abstract description 4
- 239000011347 resin Substances 0.000 claims description 14
- 229920005989 resin Polymers 0.000 claims description 14
- 238000005507 spraying Methods 0.000 claims description 6
- 230000004308 accommodation Effects 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 15
- 229910052782 aluminium Inorganic materials 0.000 description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 14
- 239000000741 silica gel Substances 0.000 description 13
- 229910002027 silica gel Inorganic materials 0.000 description 13
- 238000010438 heat treatment Methods 0.000 description 10
- 239000004642 Polyimide Substances 0.000 description 6
- 229920001721 polyimide Polymers 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 230000001680 brushing effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 229910017083 AlN Inorganic materials 0.000 description 2
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- KZNMRPQBBZBTSW-UHFFFAOYSA-N [Au]=O Chemical compound [Au]=O KZNMRPQBBZBTSW-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052790 beryllium Inorganic materials 0.000 description 2
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910001922 gold oxide Inorganic materials 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920003223 poly(pyromellitimide-1,4-diphenyl ether) Polymers 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D13/00—Electric heating systems
- F24D13/02—Electric heating systems solely using resistance heating, e.g. underfloor heating
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Resistance Heating (AREA)
Abstract
The invention discloses a kind of warmer, surface insulation type PTC electric heaters and preparation method thereof.Surface insulation type PTC electric heaters include PTC fever tablets and the first electrode piece and second electrode piece that are connected in the PTC fever tablets；Wrap around cladding in the entirety of the first electrode piece, PTC fever tablets and second electrode piece and be provided with the outside of insulating heat-conductive coating, the insulating heat-conductive coating and be provided with radiating fin.The present invention both can guarantee that electric heater surface was not charged, PTC fever tablet efficiency can be given full play to again, compact conformation, small volume is cheap.
Description
Technical field
The present invention relates to PTC technical field of heating, more particularly to a kind of warmer, surface insulation type PTC electric heaters and its
Preparation method.
Background technology
PTC (Positive Temperature Coefficient, positive temperature coefficient) electric heaters are made using PTC-ceramic piece
For heater element, compared with traditional heating wire, electrothermal tube, far infrared quartz electric heater, possess automatic temperature-controlled characteristic, and with nothing
The advantages of naked light, safe and reliable, long lifespan, it is widely used in Centralized Air-conditioning in Public Buildings, air curtain, warm-air drier, dryer, dehumidifying and dries
Dry machine, drying room equipment, the heating of large scale industry air channel, engine electric heating, electric automobile heating system, small household appliances, switch board add
The fields such as hot protection against the tide.
PTC electric heaters can be divided into the powered type in surface and surface insulated two kinds.For the powered type PTC electric heaters in surface, its
PTC pieces are directly connected with radiating aluminum strip.It is general using polyimide insulative film parcel for surface insulation type PTC electric heaters
Heat generating component, is then positioned in aluminum casing and compresses aluminum pipe, send out PTC by PTC fever tablets and electrode slice formation heat generating component
Backing and electrode slice are combined closely with aluminum pipe, are finally connected aluminum pipe with radiating aluminum strip.
For the surface insulation type PTC electric heaters of the structure, due to having used aluminum pipe, cause PTC fever tablet heats
Difficulty is distributed, therefore can not give full play to PTC fever tablet power, and PTC fever tablet monolithic powers utilization rate declines more than 30%, reached
Required to the powered type PTC electric heaters equal-wattage in surface, PTC fever tablets usage quantity need to increase by more than 30%；Correspondingly, dissipate
Hot aluminum strip usage quantity increase by more than 30%, whole PTC electric heaters volume increase more than 30%, ultimately results in surface insulation type
PTC electric heater volumes are big, cost is high.In addition, the polyimide insulative layer in surface insulation type PTC electric heaters be not direct zero away from
From electrode slice is bonded in on aluminum pipe, a layer of air thin layer can be formed, the thermal conductivity of heating unit assembly is reduced, be reduce further
The thermal efficiency of PTC electric heaters.Therefore, how to provide a kind of power utilization height, small volume, cost low surface insulation type PTC
Electric heater, is those skilled in the art's technical problem urgently to be resolved hurrily.
The content of the invention
The main object of the present invention is to provide a kind of surface insulation type PTC electric heaters, it is intended to solve power in the prior art
Using it is low the problem of.
To achieve the above object, surface insulation type PTC electric heaters proposed by the present invention, including PTC fever tablets and be connected to
First electrode piece and second electrode piece in the PTC fever tablets, the first electrode piece and the second electrode piece are located at institute
State the opposite sides of PTC fever tablets；Bag is wrapped around in the entirety of the first electrode piece, PTC fever tablets and second electrode piece
Cover and be equipped with insulating heat-conductive coating, radiating fin is provided with the outside of the insulating heat-conductive coating.
Preferably, the first electrode piece and the second electrode piece are polygonized structure.
Preferably, the first electrode piece and the second electrode piece are string configuration, the insulating heat-conductive coating
In the rectangular cross-section structure of length direction.
Preferably, the quantity of the PTC fever tablets is multiple, and arranged for interval is in the first electrode piece and second electrode piece
Between.
Preferably, it is provided with heat conduction articulamentum between the insulating heat-conductive coating surface relative with the radiating fin.
Preferably, first is provided between the first electrode piece surface relative with the PTC fever tablets to be conductively connected
Layer.
Preferably, second is provided between the second electrode piece surface relative with the PTC fever tablets to be conductively connected
Layer.
The present invention also provides a kind of warmer, and the warmer includes forming accommodation space in housing, the housing, described
Any one of foregoing surface insulation type PTC electric heaters are provided with accommodation space.
The present invention also provides a kind of preparation method of surface insulation type PTC electric heaters, comprises the following steps：
First electrode piece and second electrode piece are adhered in PTC fever tablets；
Coated insulation heat conducting coating is wrapped around in the entirety of the first electrode piece, PTC fever tablets and second electrode piece；
The side bonds radiating fin outside the insulating heat-conductive coating.
Preferably, the insulating heat-conductive coating be modified resin, and by spraying around be coated on the first electrode piece,
The overall outside of PTC fever tablets and second electrode piece.
The surface insulation type PTC electric heaters of the present invention, are surround using insulating heat-conductive coating and are coated on first electrode piece, PTC
The overall outside of fever tablet and second electrode piece, without using aluminum pipe of the prior art and Kapton, due to insulation
It is tightly combined between heat conducting coating and electrode slice and PTC fever tablets, and without thin layer of air, therefore both can guarantee that electric heater surface
It is not charged, PTC fever tablet efficiency can be given full play to again, and compact conformation, small volume is cheap.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Structure according to these accompanying drawings obtains other accompanying drawings.
Fig. 1 is the sectional view of the surface insulated PTC electric heaters of one embodiment of the invention；
Fig. 2 is the structural representation of the surface insulated PTC electric heaters of another embodiment of the present invention；
Fig. 3 is the flow chart of the preparation method of the surface insulation type PTC electric heaters of embodiment illustrated in fig. 1.
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| 100 | PTC fever tablets | 201 | First electrode piece |
| 202 | Second electrode piece | 300 | Insulating heat-conductive coating |
| 401 | Heat conduction articulamentum | 500 | Radiating fin |
| 211 | First conductive tie layers | 221 | Second conductive tie layers |
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
It is to be appreciated that institute is directional in the embodiment of the present invention indicates that (such as up, down, left, right, before and after ...) is only used
In explaining relative position relation, motion conditions under a certain particular pose (as shown in drawings) between each part etc., if should
When particular pose changes, then directionality indicates also correspondingly therewith to change.
In addition, in the present invention such as relating to the description of " first ", " second " etc. be only used for describe purpose, and it is not intended that
Indicate or imply its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ",
At least one this feature can be expressed or be implicitly included to the feature of " second ".In the description of the invention, " multiple " contain
Justice is at least two, such as two, three etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " connection ", " fixation " etc. should be interpreted broadly,
For example, " fixation " can be fixedly connected or be detachably connected, or integrally；Can be mechanically connect or
Electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, can be the connection or two of two element internals
The interaction relationship of individual element, unless otherwise clear and definite restriction.For the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In addition, the technical scheme between each embodiment of the invention can be combined with each other, but must be general with this area
Logical technical staff can be implemented as basis, when the combination appearance of technical scheme is conflicting or can not realize it will be understood that this
The combination of technical scheme is not present, also not within the protection domain of application claims.
Referring to Fig. 1, the embodiment of the present invention provides a kind of surface insulated PTC electric heaters, at least including PTC fever tablets
100th, first electrode piece 201, second electrode piece 202, insulating heat-conductive coating 300 and radiating fin 500.The He of first electrode piece 201
Second electrode piece 202 is connected in PTC fever tablets 100, and can be located at the opposite sides of PTC fever tablets 100.Shown in Fig. 1
In orientation, first electrode piece 201 is located at the upside of PTC fever tablets 100, therefore also referred to as " Top electrode piece "；Second electrode piece 202
In the downside relative with first electrode piece 201, therefore also referred to as " bottom electrode piece ".First electrode piece 201 and second electrode piece 202
One of them can be as positive pole, and another can may be such that PTC fever tablets 100 work as negative pole after being powered.
First electrode piece 201 and second electrode piece 202 can select stainless iron, stainless steel, copper, silver, aluminium and electrically conductive graphite etc.
Material.Ceramic heating element, such as BaTiO may be selected in PTC fever tablets 1003It it is 220~315 DEG C Deng, its curie point, when PTC fever tablets
100 temperature exceedes curie point, and resistance value is increased exponentially, and supply voltage is constant, and electric current is obviously reduced and causes power therewith
Reduce, and then heating reduction final temperature is again constant at curie point, the PTC fever tablets 100 have automatic constant-temperature performance, no
Computer heating control can be carried out by needing special temperature controller and thermal resistance galvanic couple equitemperature sensor to carry out feedback.
First electrode piece 201 and second electrode piece 202 are polygonized structure, can be such as trapezoidal, square, rhombuses
Structure.Further, first electrode piece 201 and second electrode piece 202 are preferably all string configuration (as being similar to ruler-shaped
Shape), PTC fever tablets 100 are held on centre.The quantity of PTC fever tablets 100 can be multiple, and arranged for interval is in first electrode
Between piece 201 and second electrode piece 202.
The embodiment wraps around cladding in the entirety of first electrode piece 201, PTC fever tablets 100 and second electrode piece 202
Insulating heat-conductive coating 300 is provided with, on the one hand the insulating heat-conductive coating 300 can play a part of electric insulation, on the other hand can be by
The heat that PTC fever tablets 100 are sent when working, which is transferred out, to be come.
The optional modified resin of insulating heat-conductive coating 300, polyimides, alumina layer, magnesium oxide layer, aluminium nitride, gold oxide
Belong to beryllium etc., preferably modified resin.The insulating heat-conductive coating 300 can be formed by modes such as spraying, brushing, printings, be preferably
Spraying.In addition, 10 μm~200 μm of the thickness of the insulating heat-conductive coating 300, the insulating heat-conductive coating 300 of the thickness can be played
Effective insulating heat-conductive effect, also can guarantee that manufacturing cost is relatively low.
It should be noted that the integral coating of insulating heat-conductive coating 300 in first electrode piece 201, PTC fever tablets 100 and
The outside of second electrode piece 202, in the sectional view shown in Fig. 1, the insulating heat-conductive coating 300 is closed loop configuration.In addition, first
The lead of electrode slice 201 and second electrode piece 202 needs guiding through the insulating heat-conductive coating 300, in order to be connected with external circuit.More
Specifically, insulating heat-conductive coating 300 length direction rectangular cross-section structure, to replace rectangle aluminum pipe of the prior art,
And without using Kapton.In addition, the intersection on each side of rectangular configuration can also form arc transition.Certainly, lead to
Special technique is crossed it is also possible that rectangular configuration formation right angle transition.
The outside of insulating heat-conductive coating 300 is provided with radiating fin 500, and the radiating fin 500 is the radiating of PTC electric heaters
End, it has larger specific surface area, can carry out heat exchange with extraneous air.Radiating fin 500 can use a variety of possible materials
Matter and structure type, preferably radiating fin 500 are radiatinig corrugated aluminum strip.Needs, radiating fin are arranged according to the space of PTC electric heaters
Piece 500 may be disposed at the one or both sides of insulating heat-conductive coating 300.In the embodiment shown in fig. 1, radiating fin 500 includes
Upper fin and lower fin, heat transference efficiency is higher, radiating effect is more preferable.
The surface insulation type PTC electric heaters of previous embodiment, without thin using aluminum pipe of the prior art and polyimides
Film, due to being tightly combined between insulating heat-conductive coating 300 and electrode slice and PTC fever tablets 100, and no thin layer of air, therefore
Both it can guarantee that electric heater surface was not charged, and used safety；The efficiency of PTC fever tablets 100, compact conformation, volume can be given full play to again
It is small, it is cheap.
Can be by being mechanically fixed connection, preferably in insulating heat-conductive coating between insulating heat-conductive coating 300 and radiating fin 500
Be provided with heat conduction articulamentum 401 between 300 surfaces relative with radiating fin 500, the heat conduction articulamentum 401 be chosen as silica gel or
Resin (can be also further organic silica gel and modified resin).Preferably silica gel, can be by insulating heat-conductive coating 300 by the silica gel
It is Nian Jie between radiating fin 500.The thickness of heat conduction articulamentum 401 is 1 μm~50 μm.Embodiment shown in corresponding diagram 1, upper
Upper heat conduction articulamentum is set between fin and insulating heat-conductive coating 300, set between lower fin and insulating heat-conductive coating 300
Put lower heat conduction articulamentum.
Similarly, between first electrode piece 201 and PTC fever tablets 100, second electrode piece 202 and PTC fever tablets 100 it
Between also can be using being mechanically fixed connection.Preferably, it is provided between the surface relative with PTC fever tablets 100 of first electrode piece 201
First conductive tie layers 211；Second is provided between the surface relative with PTC fever tablets 100 of second electrode piece 202 to be conductively connected
Layer 221.Specifically, the first conductive tie layers 211 be located at the lower surface of first electrode piece 201 and the upper surface of PTC fever tablets 100 it
Between, the second conductive tie layers 221 are located between the upper surface of second electrode piece 202 and the lower surface of PTC fever tablets 100.
First conductive tie layers 211 and the one side of the second conductive tie layers 221 play the effect of conduction, by electrode slice
Electric current is conducted to PTC fever tablets 100, in order to its heating power；On the other hand, each conductive tie layers also function to each electricity of bonding
Pole piece and the effect of PTC fever tablets 100.First conductive tie layers 211 and the second conductive tie layers 221 are chosen as silica gel or resin
(can be also further organic silica gel and modified resin), it is however preferred to have the silica gel of electric conductivity.In addition, the first conductive tie layers
211 and second the thickness of conductive tie layers 221 select as 1 μm~50 μm.
Fig. 2 is the structural representation of the surface insulated PTC electric heaters of another embodiment of the present invention, and it is by previous embodiment
Structures to form form multiple rows of, and be parallel to each other between each row, the structure heating power being spliced to form is big, is particularly suitable for use in
Used in warm-air drier.It can be fixed between each row by bonding or mechanical system.In fig. 2 it is seen that positioned at outermost insulation
Heat conducting coating 300 and radiating fin 500, first electrode piece 201, second electrode piece 202 and PTC fever tablets 100 positioned at inner side
It is invisible.
The present invention also provides a kind of warmer, and the warmer includes forming accommodation space in housing, the housing, described
The surface insulation type PTC electric heaters of previous embodiment are provided with accommodation space.The specific knot of the surface insulation type PTC electric heaters
Structure because this warmer employs whole technical schemes of above-mentioned all embodiments, therefore at least has with reference to above-described embodiment
All beneficial effects that the technical scheme of above-described embodiment is brought, this is no longer going to repeat them.
Referring to Fig. 3, the preparation method of previous embodiment surface insulation type PTC electric heaters comprises the following steps：
Step S10：First electrode piece 201 and second electrode piece 202 are adhered in PTC fever tablets 100；
First electrode piece 201 can be adhered in PTC fever tablets 100 by the first conductive tie layers 211, second electrode piece
202 can be adhered in PTC fever tablets 100 by the second conductive tie layers 221, and can be by first electrode piece 201 and second electrode
Piece 202 is adhered to the opposite sides of PTC fever tablets 100.First conductive tie layers 211 and the second conductive tie layers 221 are chosen as
Silica gel or resin (can be also further organic silica gel and modified resin), it is however preferred to have the silica gel of electric conductivity.The side of bonding
The optional brushing of formula, printing, solidification temperature are 150 DEG C~250 DEG C, and hardening time is 30min~80min.In addition, may be used also after bonding
The process for being compressed and being solidified.
Step S20：Cladding is wrapped around in the entirety of first electrode piece 201, PTC fever tablets 100 and second electrode piece 202
Insulating heat-conductive coating 300；
The optional modified resin of insulating heat-conductive coating 300, polyimides, alumina layer, magnesium oxide layer, aluminium nitride, gold oxide
Belong to beryllium etc., and first electrode piece 201, PTC fever tablets 100 and second electrode can be coated on by modes such as spraying, brushing, printings
The overall outside of piece 202.It is preferred that insulating heat-conductive coating 300 is modified resin, and first electrode piece is coated on by spraying to surround
201st, the overall outside of PTC fever tablets 100 and second electrode piece 202.Curing process condition is 50 DEG C~300 DEG C of solidification temperature,
Hardening time is 30min~60min.
Step S30：In the outer side bonds radiating fin 500 of insulating heat-conductive coating 300.
Radiating fin 500 can be adhered to the outside of insulating heat-conductive coating 300, the heat conduction articulamentum by heat conduction articulamentum 401
401 are chosen as silica gel or resin (can be also further organic silica gel and modified resin), preferably silica gel.The mode of bonding is optional
Brush, print, solidification temperature is 150 DEG C~250 DEG C, hardening time is 30min~80min.In addition, can also be pressed after bonding
Tight and solidification process.
The preparation method of previous embodiment surface insulation type PTC electric heaters, without using parcel polyimide insulative film
And the process for compressing aluminum pipe is arranged, strong operability, production efficiency is high, and manufacturing cost is low.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every at this
Under the design of invention, the equivalent structure transformation made using description of the invention and accompanying drawing content, or directly/it is used in indirectly
He is included in the scope of patent protection of the present invention related technical field.
Claims (10)
1. a kind of surface insulation type PTC electric heaters, it is characterised in that including PTC fever tablets and be connected in the PTC fever tablets
First electrode piece and second electrode piece, the first electrode piece and the second electrode piece are located at the phase of the PTC fever tablets
To both sides；Cladding, which is wrapped around, in the entirety of the first electrode piece, PTC fever tablets and second electrode piece is provided with insulating heat-conductive
Radiating fin is provided with the outside of coating, the insulating heat-conductive coating.
2. surface insulation type PTC electric heaters according to claim 1, it is characterised in that the first electrode piece and described
Second electrode piece is polygonized structure.
3. surface insulation type PTC electric heaters according to claim 2, it is characterised in that the first electrode piece and described
Second electrode piece is string configuration, rectangular cross-section structure of the insulating heat-conductive coating in length direction.
4. surface insulation type PTC electric heaters according to claim 1, it is characterised in that the quantity of the PTC fever tablets is
Multiple, arranged for interval is between the first electrode piece and second electrode piece.
5. surface insulation type PTC electric heaters according to claim 1, it is characterised in that the insulating heat-conductive coating and institute
State and be provided with heat conduction articulamentum between the relative surface of radiating fin.
6. the surface insulation type PTC electric heaters according to claim any one of 1-5, it is characterised in that the first electrode
Piece is provided with the first conductive tie layers between the surface relative with the PTC fever tablets.
7. the surface insulation type PTC electric heaters according to claim any one of 1-5, it is characterised in that the second electrode
Piece is provided with the second conductive tie layers between the surface relative with the PTC fever tablets.
8. a kind of warmer, it is characterised in that the warmer includes forming accommodation space, the appearance in housing, the housing
The surface insulation type PTC electric heaters described in claim any one of 1-7 are provided with being empty.
9. a kind of preparation method of surface insulation type PTC electric heaters, it is characterised in that comprise the following steps：
First electrode piece and second electrode piece are adhered in PTC fever tablets；
Coated insulation heat conducting coating is wrapped around in the entirety of the first electrode piece, PTC fever tablets and second electrode piece；
The side bonds radiating fin outside the insulating heat-conductive coating.
10. the preparation method of surface insulation type PTC electric heaters according to claim 9, it is characterised in that the insulation is led
Hot coating is modified resin, and is coated on the whole of the first electrode piece, PTC fever tablets and second electrode piece by spraying to surround
External side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710530730.6A CN107152715A (en) | 2017-06-29 | 2017-06-29 | Warmer, surface insulation type PTC electric heaters and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710530730.6A CN107152715A (en) | 2017-06-29 | 2017-06-29 | Warmer, surface insulation type PTC electric heaters and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107152715A true CN107152715A (en) | 2017-09-12 |
Family
ID=59795225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710530730.6A Pending CN107152715A (en) | 2017-06-29 | 2017-06-29 | Warmer, surface insulation type PTC electric heaters and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN107152715A (en) |
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| CN108848583A (en) * | 2018-05-16 | 2018-11-20 | 浙江欧兰顿电器科技有限公司 | A kind of PTC heat generating component processing method |
| CN108981180A (en) * | 2018-07-30 | 2018-12-11 | 福建闽航电子有限公司 | A kind of manufacturing method of the heat generating device of warm-air drier |
| CN109246862A (en) * | 2018-08-21 | 2019-01-18 | 无锡国威陶瓷电器有限公司 | A kind of PTC heater part |
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