CN109246865A

CN109246865A - A kind of PTC heater part

Info

Publication number: CN109246865A
Application number: CN201810986887.4A
Authority: CN
Inventors: 蒋国屏
Original assignee: Wuxi Guowei Ceramic Electrical Appliances Co Ltd
Current assignee: Wuxi Guowei Ceramic Electrical Appliances Co Ltd
Priority date: 2018-08-21
Filing date: 2018-08-21
Publication date: 2019-01-18

Abstract

The invention discloses a kind of PTC heater parts, it include PTC heat generating core, the hollow heat-conducting aluminium pipe of thin-walled prolate and radiator, the heat generating core has first electrode item and second electrode item comprising conducting surface and thermal conductive surface, if the PTC fever tablet that dry plate is clamped side by side by the thermal conductive surface of the electrode strip, heatproof insulation silica gel between the PTC fever tablet and electrode strip thermal conductive surface is formed with the heatproof insulating film for having coated the electrode strip for having clamped PTC heater element, after every group of idler wheel successively rolls, the thickness of the heater than reducing 0.01~0.25mm before rolling respectively gradually.Using design of the invention, the thickness that can accurately set heat generating core after suppressing makes to contact between heater element and heat-conducting aluminium pipe in heat-conducting aluminium pipe and cooperate even closer on the basis of thickness is gradually thinning.By gradually with the micro thickness for reducing heat generating core, guaranteeing that the heater element after suppressing in pipe is not cracked, is firmly combined between gapless, heater element and electrode slice between not broken, piece and piece.

Description

A kind of PTC heater part

Technical field

The present invention relates to a kind of thermal sensitive ceramic heater, there is the one of the heat-conducting aluminium pipe of main body reinforcing rib in especially a kind of side Kind PTC heater part.

Background technique

A kind of PTC thermal sensitive ceramic electric heater bracket and PTC electric heater (publication number CN201174784), including peace Dress face and supporting surface are equipped with the inner concave shape chamber for installing fixed heater on the support surface, the bottom of interior Reentrant Cavity be additionally provided with to The cavity for being used to place heating unit power exit connecting wire of interior extension, is equipped with conducting wire on the supporting surface of the cavity bottom Fairlead.The through-hole for placing fuse is equipped in the one side wall of supporting surface.

By this technical solution can achieve by fuse be incorporated into bracket prevent its be connected to bracket periphery and influence Safety, but be also mounted in the one side wall of supporting surface due to it, connecting line still can be wound in bracket outer, power supply Lead still has the hidden danger for loosening, falling off under external force.

A kind of ptc heater support base and ptc heater (publication number: CN200920235929), including pedestal, cover board and Screw；Pedestal is fixedly connected with cover board by screw；It is equipped with the open cavity of one side in pedestal, is equipped on interval in the cavity Wall, interval lower wall；Interval upper wall is located between the heater and temperature controller of ptc heater；Interval lower wall is located at PTC heating Between the heater and temperature fuse of device.

Temperature controller and temperature fuse can be mounted in bracket, solve temperature controller and melted by this technical solution The integrity problem of disconnected device positioning.But since extraction wire is easy that loose or dislocation occurs under the pulling repeatedly of external force, two are not The electrode slice of same polarity and the live part of line group joint face also have cause short circuit and because crimp it is bad caused by contact sparking or It loosens.

Two or more heaters are shared a tailstock and an electric appliance connect by PTC heater (publication number: 104053255A) Joint chair, temperature controller and temperature fuse plug electrically slotting chamber and electric screen shield connection after being fixed in the electrical connection seat on naked road Connect seat shield.It is asked using the positioning that the technology can solve the installation of temperature controller and fuse in electrical connection seat in tailstock Topic, but still can not solve the displacement between the part inside carrier base body between power supply lead wire, interfere with each other etc. Safety and reliability problem.

The above-mentioned prior art is fixed after there is the extraction of thermal sensitive ceramics heater electric power connection line without effective insulation, vulnerable to Drawing impression, at the same there are also mounting bracket internal electric source connecting line also vulnerable to external drawing influence the problem of.

In addition, existing cabinet air-conditioner is that single group or multiple groups are in parallel with thermal sensitive ceramics heater material, electric power connection line Interfere with each other after extraction, fixed without effective insulation, influenced by machine assembly, transport drawing, easily fall off with it is short The safety hazards on road.

A kind of PTC liquid electric heater (publication number CN2612898Y), the power supply line are connected with the electrode and are it Power supply, the power supply line are connected by the power supply line entrance of the metal shell with the external world.

Using such technical solution, since power supply line is directly connect with electrode, contact resistance is big, and power supply line is in external force Lower tie-point, which is easily led to, to fall off.

A kind of Rapid electric water heater (publication number CN2742335Y) of PTC heating, conducting wire on electrical control gear with Inserted sheet on heating device is connected.

Using such technical solution, at least need inserted sheet, insert spring and sheath with the help of complete conducting wire and PTC electrode slice Connection just can guarantee its safety, meanwhile, the requirement of inserted sheet insertion is very high, if not agreeing with portion with it completes connection, inserted sheet is easy It falls off from PTC electrode slice and heater is caused to damage.

A kind of PTC heat generating member (publication number CN2684506Y) with fastening terminal, is equipped with cramp, institute on the terminal The cramp stated is by stamping connection on electrode plate.Using such technical solution, cramp is equivalent to inserted sheet, and the distance of punching press needs Adjustment in real time inevitably has contact gap at the docking of inserted sheet and slotting spring, if not agreeing with portion with it completes connection, inserted sheet easily from PTC electrode slice falls off on spring to patching and heater is caused to be not turned on, and adjusts need to have more artificial nurse in real time, causes Increased costs.

Furthermore the prior art also has the electrode slice using the connection sheet with flange electrolysis or cornerite electrolysis and heating strip The connection scheme of punching press, though the program can solve the reliable problem of crimping of line group and connection sheet, due to flange electrolysis or packet Angle electrolysis and electrode slice are face contacts, mutually fit slightly uneven, then easily lead to matching loose, cause to loosen.Along with punching The plane punch of pressing mold applies surge to two sides of flange or cornerite simultaneously, due to two sides of electrode slice and flange or cornerite Contact position is line contact, and impression also focuses on this, and the slightly small uneven shape degree of stamping die will lead to electrode slice in indentation line On damage and fracture, lead to scrapping for a whole set of heating strip and line group.

In summary: there is poor contact, crimping pine in the power supply line of the above-mentioned prior art and the connection type of electrode slice Dynamic, many safety and reliability hidden danger such as punching press is impaired.

Prior art: being conducting resinl between fever tablet and electrode slice, since conducting resinl contains a large amount of metallic conduction powder, leads The adhesive strength of glue is caused to substantially reduce.2, the silica gel in the solidification of room temperature state rapid and natural, production and storage cost are used Also high, use is also inconvenient.3 ,~existing heat generating core is the groove of formation side after rolling, to improvement heater element and electricity Contact between pole piece and aluminum pipe heating surface, improving the thermal efficiency has good effect.

Prior art disadvantage: 1, new industry CN00221004:(1) although setting side wall, the antetheca that can be set in bracket Or roof and forward, backward, a variety of inserted modes such as to the left or to the right, but each define temperature control temperature surface and have to urged against surface This premise of the heat sink strip of electrification is easy to happen the safety hazards such as short circuit, electric leakage, unreliable and be difficult to operation and installation.(2) Two jacks of temperature control and fusing are deep into the cavity interior walls of bracket respectively, make power supply lead wire and the contact that is electrically connected exposed can only prop up Outside frame.(3) cover board being arranged only withstands the positioning action of temperature controller, can not solve the problems, such as that the tie point of live part is exposed, Bring the very big hidden danger using upper safety and reliability.2, slowly at eastern CN201420064071: the cover board of setting it is exposed The space of rack surface is easy to cause water droplet to penetrate into the hidden danger for bringing safety in the cavity of positioning temperature control and fuse.3, state Prestige 200920235929:(1) temperature control is located in the cavity of bracket pedestal, heating device temperature controller sense under the working condition of ventilation The temperature change in warm face and dry-fire condition difference when being abnormal are unobvious, need longer recovery time that can just make temperature surface Temperature reach protection temperature.(2) temperature difference of ventilation state and dry-fire condition is unobvious, is easy to cause malfunction.(3) temperature control is empty Chamber is placed in the pedestal of bracket, and the space occupied is big, is easy to cause power supply line and tie point in pedestal cavity between opposed polarity Short circuit occurs for interference or the significant safeties accident such as climb electricity.

1, national strength and prestige patent CN204741574U and CN104797015A:(1) there is no extended surface and the second through-hole (2) on cover board There is no sealing ring on harness, pricks positioning harness by line, it is unreliable easily to loosen.

Prior art: (1) tail bracket cavity inside is without sealant, because of the production of the cold and hot violent change of environment temperature when heater works Raw condensation water, which easily infiltrates into, leads to short circuit inside the aluminum pipe heater of tail portion.(2) there are blow-by in Linzhi CN302536477S, tail portion Step, sealant can not be accommodated.(3) tail portion of the tail portion of aluminum pipe heater and radiator flush or below radiator.

Prior art: Gree CN201010245871:(1) all power contact is exposed to the surface of bracket, it can not solve The electrical leakage problems for certainly sealing and using under damp state, use are dangerous.(2) engaging portion of bracket and heater is without chamfering or groove, (3) engaging portion is easily seeped water without sealant, junction gap, not can guarantee sealing performance and is avoided the infiltration used under damp state environment And electrical leakage problems, use are dangerous.

Summary of the invention

Goal of the invention: it is an object of the invention to solve existing PTC heater part pipe internal heat generation body in frequent operation Starting~heating~shutdown cooled middle the thermal stress caused by moment cold and hot violent change release due to lead to the loosening of heat-conducting aluminium pipe and Generate gap between pipe internal heat generation element and conductive electrode and insulating layer and thus contact gap and common because of heater element Between electrode slice arcing, carbonization so that caused by long-term arcing localized hyperthermia cause to insulate melting layer due to the surface that generates Electrification and electric leakage, short circuit and breakdown are exploded, a series of great and pernicious safety hazards such as the indoor unit that burns inflammable plastics Problem.

Technical solution: a kind of PTC heater part includes PTC heat generating core, the hollow heat-conducting aluminium pipe of thin-walled prolate and heat dissipation Device, if the heat generating core has the first electrode item comprising conducting surface and thermal conductive surface and second electrode item, dry plate by the electrode strip Thermal conductive surface clamp side by side PTC fever tablet, between the PTC fever tablet and electrode strip thermal conductive surface heatproof insulation silica gel and The heatproof insulating film composition of the electrode strip for having clamped PTC heater element, the heatproof insulation silica gel at least two are coated A component, wherein at least one component are liquid under room temperature state, and described two silica gel pass through the proportional arrangement by substantially 1: 1 And becoming the preferable synthesized silicon rubber of mobility after being sufficiently mixed, the heat-conducting aluminium pipe heater is using hair described in multiple groups pair of rollers The entire heat-transfer surface of hot body carries out rolling compaction, and the distance between the rolling surface of every group of idler wheel is fine-tuning, rolls through every group After wheel successively rolls, the thickness of the heater is more preceding than rolling to reduce 0.01~0.25mm respectively gradually, the heat-conducting aluminium pipe Preparation process the following steps are included:

1) aluminium ingot is melted in special thawing furnace and is softened；

2) the softening molten aluminum at fire door with some strength will be located at again by dedicated die cavity to furnace out-draw, the die cavity Positioned at the fire door of the thawing furnace；

3) molten aluminum of the softening is quickly cooled down during the Uniform Tension of room temperature environment, forms the hollow heat conduction aluminum of prolate Pipe.

Further, the radiator is corrugated cooling strip, and heat generating core is penetrated to the flat cavity of the heat-conducting aluminium pipe Interior formation aluminum pipe heater, is rolled gradually through the heat-conducting planar to the heater, makes the hair for penetrating heat-conducting aluminium pipe cavity Between the PTC fever tablet of hot in-core, electrode strip and heatproof insulating film and the heat generating core and the heat-conducting aluminium pipe inner wall it is thermally conductive PTC heater is all eliminated and is mutually fitted closely into all gaps of interplanar, and the heat-conducting planar of the PTC heater is pasted Heat-conducting planar corresponding with the heat sink strip is closed, and in joint place brushing synthesized silicon rubber, in 150~300 DEG C of temperature and 5 minutes In above time, the synthesized silicon rubber is fully cured, the heat-conducting aluminium pipe heater and the heat sink strip are firmly glued It is connected in one.

Prior art: power 1~2, is conducting resinl between fever tablet and electrode slice, since conducting resinl contains a large amount of metallic conduction Powder causes the adhesive strength of glue to substantially reduce.2, the silica gel in the solidification of room temperature state rapid and natural, production and storage are used It is also high to be saved as this, use is also inconvenient.3 ,-existing heat generating core is the groove of formation side after rolling, to improvement fever member Contact between part and electrode slice and aluminum pipe heating surface, improving the thermal efficiency has good effect.The present invention greatly can improve and mention Heat generating core is bent caused by the stress that discharge due to uniform configuration changes after height rolling, guarantees the straight, no of rolling product later Deformation.It is 500-1000mm or more (on-hook, cabinet-type air conditioner between 1.5-5) for length, the reinforcing rib of side can mention significantly High bending resistance, flexural strength, deformation caused by effectively eliminating and reduce in turnover, transport, installation process because of external force.In addition, The reinforcing rib of side also can greatly improve and promoted heat-conducting aluminium pipe to heater element, conductive electrode film and the insulation in being coated on Cladding intensity between layer, the starting-heating-shutdown for effectively eliminating pipe internal heat generation body in frequent operation are cooled middle because moment is cold Thermal stress caused by heat shock becomes discharges and leads to the loosening of heat-conducting aluminium pipe and generate pipe internal heat generation element and conductive electrode and insulation Layer between gap and thus contact gap and it is common because of arcing, carbonization between heater element and electrode slice or even because jumping for a long time Caused by fire localized hyperthermia cause insulate melting layer and generate surface electrification and electric leakage, short circuit and breakdown, explode, burn easily Fire the generation of a series of great and pernicious safety hazards such as the indoor unit of plastics.(1) the rolling over after poling due to aluminum pipe Recess dimensions in from journey to aluminum pipe inner cavity are small compared with comparing for no reinforcing rib, can achieve reduce side in pressing process in this way Tube wall insulate to the compressive zone of insulating film the on-insulated safety risks of membrane damage；(2) reinforcing rib of side more favorably disappears Except when rolling after poling, aluminum pipe is eliminating gap (including the aluminum pipe sheet in managed between each part between tube wall to aluminum pipe heater The extension of body wall thickness) during along length and width direction irregular extension, under the premise of extending uniform, inside aluminum pipe Electrode slice, insulating film and PTC heater element will be each to being tightly combined between the thermally conductive inner wall of aluminum pipe, to the heat for improving product Efficiency, anti-aging property and long term reliability can bring good effect；(3) each zero in the uniform pipe of the contraction of aluminum pipe Combined between part it is even closer under the premise of, be obviously improved work because of the action noise that cold and hot violent change generates to product is improved With.

Without reinforcing rib, only 3 groups of idler wheels below, pressure can only be debugged, the distance between second wheel cannot be debugged.2, hair Obvious results fruit: (1) weighing 1 and 2-1, since the surface contact surface of PTC fever tablet and electrode strip is not absolute mirror surface, according to corresponding Small protrusion point contact is conductive, and depression points store silica gel to keep adhesive strength.It is rolled using the heat-transfer surface to heat-conducting aluminium pipe And reached that conductive contact is uniformly distributed, depression points storage silica gel is close and uniformly, i.e., has both guaranteed reliable and uniform electrical pickoff, Make homogeneous current distribution, eliminate contact resistance, while making to be stored in the silica gel between corresponding thermal contact conductance face in concave point again It is evenly distributed, it is ensured that connection and contact strength.(2) 3,4 are weighed, reinforcing rib: can accurately sets the thickness of heat generating core after suppressing Degree makes to contact between the heater element and heat-conducting aluminium pipe in heat-conducting aluminium pipe and cooperate more on the basis of thickness is gradually thinning Closely.2, by gradually with the micro thickness for reducing heat generating core, guaranteeing that the heater element after suppressing in pipe is not cracked, do not broken It is firmly combined between gapless, heater element and electrode slice between broken, piece and piece.Embodiment: first group of idler wheel design gaps be 0.05mm is played effect that is uniform between highly viscous silica gel and heater element and electrode slice, fitting closely, is guaranteed to increase in pressure It is viscous because of glue from each other because silica gel is under uniform pressing between adjacent heater element and its between electrode slice on the basis of adding Cooperation reliable location pressurizes gradually on this basis without displacement and gap, rear several groups of idler wheels, makes each accessory in pipe It is bonded closer, the especially brittleness of ceramic heating element between contact surface, is passing through threadiness to thermally conductive width direction and whole A surface slowly, it is uniform be stepped up in the state of pressure, significantly improve.Having prevented prior art can not in compacting What is avoided cracks heater element with chipping so as to cause significant safeties accidents such as short circuit, the open circuits of heating device Because of degumming or caused by being bonded unevenly, power attenuation, the durability of service life reduction are hidden between heater element and electrode slice Suffer from.

A kind of electric appliance contains a kind of PTC heater part.

Further, the electric appliance is selected from air-conditioning, warm-air drier, hot air curtain device, super bath, dehumidifier, air purifier, does At least one of clothing machine, new-energy automobile steam air heater or demisting defroster.

The utility model has the advantages that the present invention is in terms of existing technologies:

Prior art: being conducting resinl between fever tablet and electrode slice, since conducting resinl contains a large amount of metallic conduction powder, leads The adhesive strength of glue is caused to substantially reduce.2, the silica gel in the solidification of room temperature state rapid and natural, production and storage cost are used Also high, use is also inconvenient.3 ,~existing heat generating core is the groove of formation side after rolling, to improvement heater element and electricity Contact between pole piece and aluminum pipe heating surface, improving the thermal efficiency has good effect.The present invention can greatly improve rolling It is bent caused by the stress that heat generating core is discharged because uniform configuration changes afterwards, product is straight, indeformable after guarantee rolls.It is right It is 500~1000mm or more (on-hook, cabinet-type air conditioner between 1.5~5) in length, the reinforcing rib of side is greatly improved anti- Curved, flexural strength, deformation caused by effectively eliminating and reduce in turnover, transport, installation process because of external force.In addition, side Reinforcing rib also can greatly improve and promoted heat-conducting aluminium pipe to heater element, conductive electrode film and the insulating layer in being coated on it Between cladding intensity, the starting~heating~shutdown for effectively eliminating pipe internal heat generation body in frequent operation is cooled middle because moment is cold and hot Thermal stress caused by violent change discharges and leads to the loosening of heat-conducting aluminium pipe and generate pipe internal heat generation element and conductive electrode and insulating layer Between gap and thus contact gap and it is common because of arcing, carbonization between heater element and electrode slice or even because of long-term arcing Caused by localized hyperthermia cause insulate melting layer and generate surface electrification and electric leakage, short circuit and breakdown, explode, burn it is inflammable The generation of a series of great and pernicious safety hazards such as the indoor unit of plastics.(1) rolling process due to aluminum pipe after poling The middle recess dimensions to aluminum pipe inner cavity are small compared with comparing for no reinforcing rib, can achieve the pipe for reducing side in pressing process in this way Wall insulate to the compressive zone of insulating film the on-insulated safety risks of membrane damage；(2) reinforcing rib of side is more favorably eliminated Aluminum pipe heater aluminum pipe when rolling after poling is eliminating gap (including the aluminum pipe itself in managed between each part between tube wall The extension of wall thickness) during along length and width direction irregular extension, under the premise of extending uniform, inside aluminum pipe Electrode slice, insulating film and PTC heater element will be each to being tightly combined between the thermally conductive inner wall of aluminum pipe, to the thermal effect for improving product Rate, anti-aging property and long term reliability can bring good effect；(3) each part in the uniform pipe of the contraction of aluminum pipe Between combine it is even closer under the premise of, be obviously improved work because of the action noise that cold and hot violent change generates to product is improved With.

Detailed description of the invention

Fig. 1 is structural schematic diagram of the present invention using the heat-conducting aluminium pipe of cylinder reinforcing rib；

Fig. 2 is the structural schematic diagram of the embodiment of the present invention 1.

Specific embodiment

The present invention is described further with reference to the accompanying drawings and examples.

Embodiment 1

A kind of PTC heater part includes PTC heat generating core, the hollow heat-conducting aluminium pipe 1 of thin-walled prolate and radiator, the hair If hot core has the first electrode item comprising conducting surface and thermal conductive surface and second electrode item, dry plate by the thermal conductive surface of the electrode strip 2 The PTC fever tablet 3 clamped side by side, the heatproof insulation silica gel 4 between 2 thermal conductive surface of the PTC fever tablet 3 and electrode strip and cladding The heatproof insulating film 5 of the electrode strip 2 for having clamped PTC heater element forms, and the heatproof insulate at least two, silica gel 4 Component, wherein at least one component are liquid under room temperature state, described two silica gel pass through by substantially 1: 1 proportional arrangement and Become the preferable synthesized silicon rubber of mobility after being sufficiently mixed, the preparation process of the heat-conducting aluminium pipe 1 the following steps are included:

1) aluminium ingot is melted in special thawing furnace and is softened；

The radiator 6 is corrugated cooling strip, heat generating core is penetrated in the flat cavity of the heat-conducting aluminium pipe 1 and forms aluminium Pipe heater rolls gradually through the heat-conducting planar to the heater, makes to penetrate in the heat generating core of 1 cavity of heat-conducting aluminium pipe Between PTC fever tablet 3, electrode strip 2 and heatproof insulating film 5 and the heat-conducting planar of the heat generating core and 1 inner wall of heat-conducting aluminium pipe Between all gaps all eliminate and mutually fit closely into PTC heater, by the heat-conducting planar fitting of the PTC heater with The corresponding heat-conducting planar of the heat sink strip, and in joint place brushing synthesized silicon rubber, in 150~300 DEG C of temperature and 5 minutes or more Time in, the synthesized silicon rubber is fully cured, 1 heater of heat-conducting aluminium pipe and the heat sink strip are firmly bonded are One.

1 heater of heat-conducting aluminium pipe is to carry out rolling stone roller using the entire heat-transfer surface of heater described in multiple groups pair of rollers It presses, the distance between the rolling surface of every group of idler wheel is fine-tuning, after every group of idler wheel successively rolls, the thickness of the heater Than reducing 0.01~0.25mm respectively gradually before rolling.

Embodiment 2

A kind of electric appliance contains PTC heater part.

The electric appliance is selected from air-conditioning, warm-air drier, hot air curtain device, super bath, dehumidifier, air purifier, dryer, new energy At least one of source Automaobile warm-air apparatus or demisting defroster.

Claims

1. a kind of PTC heater part, it is characterised in that: include PTC heat generating core, the hollow heat-conducting aluminium pipe of thin-walled prolate and heat dissipation Device, if the heat generating core has the first electrode item comprising conducting surface and thermal conductive surface and second electrode item, dry plate by the electrode strip Thermal conductive surface clamp side by side PTC fever tablet, between the PTC fever tablet and electrode strip thermal conductive surface heatproof insulation silica gel and The heatproof insulating film composition of the electrode strip for having clamped PTC heater element, the heatproof insulation silica gel at least two are coated A component, wherein at least one component are liquid under room temperature state, and described two silica gel pass through the proportional arrangement by substantially 1: 1 And becoming the preferable synthesized silicon rubber of mobility after being sufficiently mixed, the heat-conducting aluminium pipe heater is using hair described in multiple groups pair of rollers The entire heat-transfer surface of hot body carries out rolling compaction, and the distance between the rolling surface of every group of idler wheel is fine-tuning, rolls through every group After wheel successively rolls, the thickness of the heater is more preceding than rolling to reduce 0.01~0.25mm respectively gradually, the heat-conducting aluminium pipe Preparation process the following steps are included:

1) aluminium ingot is melted in special thawing furnace and is softened；

2) will be located at fire door again has the softening molten aluminum of some strength by dedicated die cavity to furnace out-draw, and the die cavity is located at The fire door of the thawing furnace；

3) molten aluminum of the softening is quickly cooled down during the Uniform Tension of room temperature environment, forms the hollow heat-conducting aluminium pipe of prolate.

2. PTC heater part according to claim 1, it is characterised in that: the radiator is corrugated cooling strip, will be sent out Hot core, which penetrates, forms aluminum pipe heater in the flat cavity of the heat-conducting aluminium pipe, grind gradually through the heat-conducting planar to the heater Pressure, makes between the PTC fever tablet penetrated in the heat generating core of heat-conducting aluminium pipe cavity, electrode strip and heatproof insulating film and the hair All gaps between hot core and the heat-conducting planar of the heat-conducting aluminium pipe inner wall, which are all eliminated and mutually fit closely into PTC, to generate heat The heat-conducting planar of the PTC heater is bonded heat-conducting planar corresponding with the heat sink strip, and brushes and synthesize in joint place by body The synthesized silicon rubber is fully cured within the time of 150~300 DEG C of temperature and 5 minutes or more in silica gel, will be described thermally conductive Aluminum pipe heater and the heat sink strip are firmly bonded as one.

3. a kind of electric appliance, it is characterised in that: contain any PTC heater part described in the claims 1~2.

4. electric appliance according to claim 3, it is characterised in that the electric appliance is selected from air-conditioning, warm-air drier, hot air curtain device, bath Despot, dehumidifier, air purifier, dryer, new-energy automobile steam air heater or demisting defroster at least one.