CN209676501U - A kind of sub-assembly of ptc heater part and electric appliance containing it - Google Patents

Abstract

The utility model discloses a kind of sub-assemblies of ptc heater part, the PTC heater and the first mounting bracket, the second mounting bracket and the introducing power supply harness for being connected to temperature controller and temperature fuse formed including PTC heat generating core and heat-conducting aluminium pipe and radiator, the electrical connections and corresponding gap of the heating device exit electrode strip and the power supply harness connected to it by electric insulating sealant be stuffed entirely with sealing.The pedestal of bracket and the combination gap of heating device have sealant dual and reinforce sealing, and the chamfering or groove of faying face can effectively store the preferable sealant of mobility, thoroughly prevent to seep water, improved waterproof performance.The sealant received is deposited at chamfering and increases bonded area, bond strength is improved, extends service life, prevents electric leakage caused by damp state and condensing drip and short circuit.

Description

A kind of sub-assembly of ptc heater part and electric appliance containing it

Technical field

The utility model relates to a kind of thermal sensitive ceramic heater, the sub-assembly of especially a kind of ptc heater part and contain Its electric appliance.

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, completion conducting wire and PTC electrode slice with the help of at least needing inserted sheet, inserting spring and sheath Connection just can guarantee its safety, meanwhile, inserted sheet insertion requirement it is very high, if not with its agree with portion complete connection, inserted sheet It easily 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, Xu Chengdong 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) Linzhi CN302536477S, tail portion have not close The step of envelope can not accommodate sealant.(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.

Utility model content

Purpose of utility model: utility model aims to solve existing ptc heater part pipe internal heat generation bodies in frequency The cooled middle thermal stress caused by moment cold and hot violent change of starting~heating~shutdown of numerous work discharges due to leads to heat-conducting aluminium pipe Loosening and generate the gap between pipe internal heat generation element and conductive electrode and insulating layer and thus contact gap and it is common because Arcing between heater element and electrode slice, carbonization so caused by long-term arcing localized hyperthermia cause to insulate melting layer due to produce Raw surface electrification and electric leakage, short circuit and breakdown are exploded, a series of great and pernicious safety such as the indoor unit that burns inflammable plastics The problem of sexual behavior event.

Technical solution: a kind of sub-assembly of ptc heater part, including PTC heat generating core and heat-conducting aluminium pipe and radiator composition PTC heater and the first mounting bracket, the second mounting bracket and the introducing electricity for being connected to temperature controller and temperature fuse Source harness, 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 electricity The PTC fever tablet that the thermal conductive surface of pole item clamps side by side, the heatproof insulation between the PTC fever tablet and electrode strip thermal conductive surface Silica gel and the heatproof insulating film for having coated the electrode strip for having clamped PTC heater element, first mounting bracket have pedestal And capping, there is open big cavity in the pedestal, the electrical connections of the opposed polarity are located in the open big cavity Afterwards, by electric insulating sealant by the electrical connections of the heating device exit electrode strip and the power supply harness connected to it And corresponding gap is stuffed entirely with sealing.

Further, in the open big cavity outside the elongated end of the heating device opposing electrode exit There is limit insulation wall in side, described by electric insulating sealant filling, the heating device exit electrode strip of sealing and institute connected to it The electrical connections and corresponding electric insulating sealant for stating power supply harness be both located in it is described limit insulation wall corral at opening In small cavity.

Further, the opposing electrode exit and corresponding electrical connection section being located in the open big cavity Point surface is encapsulated with Insulating heat shrink and will be coated on interior electrode strip exit and electricity connected to it by electric insulating sealant Coupling part and corresponding gap are stuffed entirely with sealing.

Prior art: CN104797022A, thermal sensitive ceramics heater sub-assembly and its heater and mounting bracket.One is different Without sealant at polar electric pole piece exit positioning, end surfaces naked thermal shrinkable sleeve is drawn without positioning insulation wall in exit outside Pipe.Under damp state and Riddled Condition can PTC heater element can come into force, short circuit and bombing.Electrically connect part can also occur short circuit, The significant safety accident of electric leakage.

Utility model main points: (1) electric insulating sealant is complete by the gap between the electrode leads to client of opposed polarity and power supply pressure point Portion's covering is filled up, it is ensured that will not be seeped water in damp state and Riddled Condition PTC heater element, electrically connecting part also can guarantee reliably absolutely Edge.(2) the positioning insulation wall on the outside of electrode leads to client not only plays the role of limiting extraction electrode, but also draws the electrode of opposed polarity Outlet and its one cavity of formation between the tie point of input power, waste sealant not.(3) preferably close in mobility Sealing can be stored in the cavity surrounded by insulation wall, and the gap between the electrode leads to client of opposed polarity and power supply pressure point is complete Portion's covering is filled up.(4) electrode leads to client of opposed polarity and power supply pressure point are all covered by heat-shrinkable T bush more to subtract The waste of few sealant, improves the reliability and production efficiency of sealing.Utility model effect: (1) greatly improve sealing and Insulation performance ensure that the reliable sealing and insulation of live part.(2) avoid sealant it is excessive, waste, ensure that sealing and Insulation effect.(3) operability and process consistency for improving batch production, substantially increase production efficiency.(embodiment is said It is bright: in the case where electrically connecting the environment that part and power supply line exit are totally submerged in water, still to can ensure that heating device live part It reliably insulate with its surface, leakproof).(4) infiltration and electric leakage that PTC heater uses under damp state environment are thoroughly solved Problem, the safe and reliable property for fundamentally solving waterproof performance and using.Embodiment: the structure of the small pit body sub-assembly of Gree money Figure.

Further, have in the big cavity of opening of the first support positioning temperature controller and temperature fuse with There are receiving and the fixed power supply in the locating groove of the connected opposed polarity power supply line of input power, the locating groove side The dividing wall of line.

Utility model effect: 1, the power supply lead wire of opposed polarity is separated, positioning.2, ensure and temperature controller and temperature The power supply lead wire that fuse is connected is positioned in card slot, when by external force, will not because cause temperature controller and The displacement of temperature fuse and occur temperature-sensitive inaccuracy caused by malfunction or defencive function failure.

Further, at four peripheral wall mouths of the cavity wall of second mounting bracket and bushing heating device junction There are chamfering or groove.

Further, the chamfering or groove be to the inside inclination or recess for contacting the heating device tail end, it is described fall It fills to have applied all to fill out the gap of four peripheral wall mouths of the rack side wall and the junction of the heating device in angle or groove and cover Sealant.

Utility model effect: it makes up in device formation curing process because tail end caused by tooling and human negligence is sent out Fit clearance between hot body and radiator prevents to thereby result in coming unglued between heater and radiator, degumming, it is ensured that fever The adhesive strength of device guarantees heat dissipation effect and safety and reliability.Improve the safety and reliability of heating device.

Further, the sub-assembly has the first mounting bracket, the second mounting bracket, is connected with temperature controller and temperature The power supply harness of fuse, first mounting bracket have pedestal and capping, and the pedestal and receiving position the heating device There are chamfering or groove at four peripheral wall mouths of the cavity wall of exit junction.

Further, the chamfering or groove are recessed to the side for contacting the heating device, in the chamfering or groove The sealant covered is all filled out in the gap that filling has applied the junction by four peripheral wall mouths of the rack side wall Yu the heating device.

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.It is creative to weigh 27-29: (1) there is sealing in the combination gap of the pedestal of bracket and heating device Glue is dual and reinforces sealing, and the chamfering or groove of (2) faying face can effectively store the preferable sealant of mobility, thoroughly prevent Infiltration, has improved waterproof performance.(3) sealant received is deposited at chamfering and increases bonded area, improves bond strength, Service life is extended, electric leakage caused by damp state and condensing drip and short circuit are prevented.

Further, the sub-assembly has the first, second mounting bracket and is connected with temperature controller and temperature fuse Power supply harness, first mounting bracket has a pedestal and capping, and all engaging portion peripheries of the pedestal and the capping have Chamfering or groove.

Further, the chamfering or groove tilt or are recessed to the cavity side of the pedestal, the chamfering or groove Interior filling has applied the sealant that the gap of all junctions by the pedestal and the capping all coats.

Further, after the pedestal of first mounting bracket covers capping, then heatproof, Insulating heat shrink are put on, 70~120 degree at a temperature of, the heat-shrinkable T bush is shunk, and the bracket is fixed, is sealed into surface without any fit clearance Closed entirety.

Further, ptc heater part is by multiple groups parallel combination.

A kind of electric appliance contains a kind of ptc heater part and sub-assembly.

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 utility model is in terms of existing technologies:

Sealing and insulation performance are greatly improved, that is, ensure that the reliable sealing and insulation of live part, also can avoid Excessive, the waste of sealant.The operability and process consistency for improving batch production, substantially increase production efficiency.In It electrically connects under the environment that part and power supply line exit are totally submerged in water, still can ensure that heating device live part and Qi Biao Face leakproof.It thoroughly solves the infiltration and electrical leakage problems that heater uses under damp state environment, fundamentally solves waterproofness The safe and reliable property that can and use.Embodiment: the structure chart of beautiful money bracket.

Prevent heater when working because the condensation water of the generation of the cold and hot violent change of environment temperature is from penetrating into tail portion aluminum pipe heater Inside causes between internal electrode slice or the caused short circuit of the side water accumulation of heater element drop.Make up device formation solidification work Because of the fit clearance caused by tooling and human negligence between tail end heater and radiator during skill, prevent to thereby result in Coming unglued between heater and radiator, degumming, it is ensured that the adhesive strength of heater guarantees heat dissipation effect and safety and reliable Property.Improve the safety and reliability of heating device.

It makes up in device formation curing process because of tail end heater and radiator caused by tooling and human negligence Between fit clearance, prevent to thereby result in coming unglued between heater and radiator, degumming, it is ensured that the bonding of heater is strong Degree guarantees heat dissipation effect and safety and reliability.Improve the safety and reliability of heating device.

The pedestal of bracket and the combination gap of heating device have sealant dual and reinforce sealing, the chamfering of faying face or recessed Slot can effectively store the preferable sealant of mobility, thoroughly prevent to seep water, improved waterproof performance.It deposits and receives at chamfering Sealant increase bonded area, improve bond strength, extend service life, prevent caused by damp state and condensing drip Electric leakage and short circuit.

Detailed description of the invention

Fig. 1 is that the elongated end outside of the utility model electrode strip exit has the structural schematic diagram of limit insulation wall；

Fig. 2 is the sectional view that the utility model covers that the first mounting bracket of cover board compresses sealant；

Fig. 3 is that the first mounting bracket of the utility model covers cover board, packages the schematic diagram of heat-shrink tube；

Fig. 4 is the structural schematic diagram that the utility model heating device is connected to power supply harness；

Fig. 5 is the structural schematic diagram of the second mounting bracket of the utility model.

Specific embodiment

The utility model is described further with reference to the accompanying drawings and examples.

Embodiment 1

A kind of sub-assembly of ptc heater part, the PTC hair formed including PTC heat generating core and heat-conducting aluminium pipe 1 and radiator 6 Hot device and the first mounting bracket, the second mounting bracket 16 and the introducing power supply for being connected to temperature controller 17 and temperature fuse 18 Harness, 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 The PTC fever tablet 3 that the thermal conductive surface of item 2 clamps side by side, the heatproof insulation between 2 thermal conductive surface of the PTC fever tablet 3 and electrode strip Silica gel 4 and the heatproof insulating film 5 for having coated the electrode strip 2 for having clamped PTC heater element, first mounting bracket have Pedestal 19 and capping 20, there is open big cavity in the pedestal 19, and the electrical connections of the opposed polarity are located in described spacious After in mouthful big cavity, by electric insulating sealant by the heating device exit electrode strip 2 and the power supply harness connected to it Electrical connections and corresponding gap be stuffed entirely with sealing.

There is limit on the outside of the elongated end of the heating device opposing electrode exit in the open big cavity Insulation wall 30, the heating device exit electrode strip 2 and the electricity connected to it by the filling of electric insulating sealant 14, sealing The electrical connections of source harness and corresponding electric insulating sealant be both located in it is described limit 30 corral of insulation wall at opening it is small In cavity.

2 exit of opposing electrode item and corresponding electrical connections surface set being located in the open big cavity Envelope has Insulating heat shrink and will be coated on interior 2 exit of electrode strip and electrical connection section connected to it by electric insulating sealant 14 Divide and corresponding gap is stuffed entirely with sealing.

The opening of a kind of sub-assembly of ptc heater part, the sub-assembly containing ptc heater part, the first support is big There is the opposed polarity power supply line for positioning that the temperature controller 17 and temperature fuse 18 are connected with input power in cavity There are the dividing wall 32 of receiving and the fixed power supply line in locating groove, the locating groove side.

The sub-assembly has the first mounting bracket, the second mounting bracket 16, is connected with temperature controller 17 and temperature fusing The power supply harness of device 18, first mounting bracket have pedestal 19 and capping 20, and the pedestal 19 and receiving position the hair There are chamfering or groove at four peripheral wall mouths of the cavity wall of thermal device exit junction.

The chamfering or groove are recessed to the side for contacting the heating device, fill and have been applied institute in the chamfering or groove The sealant 14 covered is all filled out in the gap for stating four peripheral wall mouths of rack side wall and the junction of the heating device.

The sub-assembly has the first, second mounting bracket and is connected with the electricity of temperature controller 17 and temperature fuse 18 Source harness, first mounting bracket have pedestal 19 and capping 20, all engaging portions week of the pedestal 19 and the capping 20 While having chamfering or groove.

The chamfering or groove tilt or are recessed to the cavity side of the pedestal, fill that applied will in the chamfering or groove The sealant that the gap of all junctions of the pedestal and the capping all coats.

The sub-assembly of the ptc heater part after the pedestal of first mounting bracket covers capping, then is put on resistance to Temperature, Insulating heat shrink 25,70-120 degree at a temperature of, the heat-shrinkable T bush 25 is shunk, and the bracket is fixed, is sealed into Closed entirety of the surface without any fit clearance.

Ptc heater part is by multiple groups parallel combination.

Embodiment 2

A kind of electric appliance, the sub-assembly containing 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 (12)

1. a kind of sub-assembly of ptc heater part, it is characterised in that: formed including PTC heat generating core and heat-conducting aluminium pipe and radiator PTC heater and the first mounting bracket, the second mounting bracket and the introducing electricity for being connected to temperature controller and temperature fuse Source harness, 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 electricity PTC fever tablet that the thermal conductive surface of pole item clamps side by side, the heatproof insulating silicon between the PTC fever tablet and electrode strip thermal conductive surface Glue and the heatproof insulating film for having coated the electrode strip for having clamped PTC heater element, first mounting bracket have pedestal and It covers, after thering is open big cavity, the electrical connections of the opposed polarity to be located in the open big cavity in the pedestal, By electric insulating sealant by the electrical connections of the heating device exit electrode strip and the power supply harness connected to it and Corresponding gap is stuffed entirely with sealing.

2. the sub-assembly of ptc heater part according to claim 1, it is characterised in that: along institute in the open big cavity Stating has limit insulation wall on the outside of the elongated end of heating device opposing electrode exit, it is described by electric insulating sealant filling, The electrical connections and corresponding insulation of the heating device exit electrode strip of sealing and the power supply harness connected to it are close Sealing be both located in the limit insulation wall corral at the small cavity of opening in.

3. the sub-assembly of ptc heater part according to claim 1 or 2, it is characterised in that: be located in described open big empty Intracavitary opposing electrode exit and corresponding electrical connections surface be encapsulated with Insulating heat shrink and by insulate it is close Electrode strip exit in being coated on and electrical connections connected to it and corresponding gap are stuffed entirely with sealing by sealing.

4. the sub-assembly of ptc heater part according to claim 3, it is characterised in that: the opening of the first support is big There is the positioning for positioning the opposed polarity power supply line that the temperature controller and temperature fuse are connected with input power in cavity There are the dividing wall of receiving and the fixed power supply line in card slot, the locating groove side.

5. the sub-assembly of ptc heater part according to claim 1,2 or 4, it is characterised in that: the sub-assembly has first Mounting bracket, the second mounting bracket, the power supply harness for being connected with temperature controller and temperature fuse, first mounting bracket There are pedestal and capping, four peripheral wall mouths of the pedestal and the cavity wall for accommodating, positioning heating device exit junction There are chamfering or groove in place.

6. the sub-assembly of ptc heater part according to claim 5, it is characterised in that: the chamfering or groove are to contact The side of the heating device is recessed, and fills and has been applied four peripheral wall mouths of the rack side wall and the hair in the chamfering or groove The sealant covered is all filled out in the gap of the junction of thermal device.

7. the according to claim 1, sub-assembly of ptc heater part described in 2,4 or 6, it is characterised in that: the sub-assembly has One, the second mounting bracket and it is connected with the power supply harness of temperature controller and temperature fuse, first mounting bracket has seat There are chamfering or groove in all engaging portion peripheries of body and capping, the pedestal and the capping.

8. the sub-assembly of ptc heater part according to claim 7, it is characterised in that: the chamfering or groove are to described The cavity side of pedestal tilts or recess, fills all combinations applied the pedestal and the capping in the chamfering or groove The sealant that the gap at place all coats.

9. the according to claim 1, sub-assembly of ptc heater part described in 2,4,6 or 8, it is characterised in that: first installation After the pedestal of bracket covers capping, then put on heatproof, Insulating heat shrink, 70~120 degree at a temperature of, the thermal shrinkable sleeve Pipe is shunk, and the bracket is fixed, the closed entirety without any fit clearance that is sealed into surface.

10. the according to claim 1, sub-assembly of ptc heater part described in 2,4,6 or 8, it is characterised in that: ptc heater part By multiple groups parallel combination.

11. a kind of electric appliance, it is characterised in that: contain any ptc heater part described in the claims 1,2,4,6 or 8 Sub-assembly.

12. electric appliance according to claim 11, it is characterised in that the electric appliance be selected from air-conditioning, warm-air drier, hot air curtain device, At least one of super bath, dehumidifier, air purifier, dryer, new-energy automobile steam air heater or demisting defroster.