CN109963360A - A kind of sub-assembly of PTC heater part - Google Patents

Abstract

The invention discloses a kind of sub-assemblies of PTC heater part, also accommodate and position the small pit body of temperature controller and temperature fuse at the wall thickness that second cavity is bonded radiator end heat-delivery surface.Under heating, the normal operating conditions of ventilation and the nonventilated abnormality of heating, the difference of the temperature difference on temperature-sensitive surface is significantly different for temperature controller and temperature fuse of the present invention.That is: when fan motor breaks down, and the PTC heater is caused to be in the abnormal operation of calm dry combustion method; be positioned at rack surface temperature controller and temperature fuse and ventilation, heating working condition under temperature difference it is more obvious; in the state of stuffy dry-fire condition, effective moment protection can be disconnected.

Description

A kind of sub-assembly of PTC heater part

Technical field

The present invention relates to a kind of thermal sensitive ceramic heater, especially a kind of sub-assembly of 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, 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) 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 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 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 Capping, the pedestal have along the heating device electrode strip elongated end for accommodating the heating device opposing electrode item Exit and first cavity for electrically connecting part and the power supply harness line for introducing power supply harness and bushing, receiving institute The second cavity for stating the radiator end of heating device is bonded the wall of radiator end heat-delivery surface in second cavity The small pit body of temperature controller and temperature fuse is also accommodated and positioned at thickness, and the depth of the small pit body is much smaller than the temperature Spend the length of controller and temperature fuse.

Further, the length of the open face of the small pit body close to the temperature controller, temperature fuse Length.

Further, have in the adjacent side of positionable wall of the small pit body of the positioning temperature fuse and accommodate the fuse The positioning cavity groove of power supply lead wire.

Further, the positioning cavity groove of the small pit body for accommodating temperature fuse and adjacent temperature fuse power supply lead wire Dividing wall on have the company's of passing through pit body and position the gap of cavity groove, the lead of the temperature fuse is embedded in and passes through the gap It is positioned in the positioning cavity groove of the power supply lead wire.

Prior art: national strength and prestige CN201515508U.Disadvantage: 1, temperature controller, temperature fuse are connected with power supply harness Point is in the plane of the same cavity, and installation site and space is smaller, power supply contact of opposed polarity and conducting wire are inevitably interfered can There is biggish hidden danger by property and safety.(2) temperature difference of ventilation state and dry-fire condition is unobvious, is easy to cause malfunction.Hair Bright point: temperature controller and fuse are located in the heating device power outlet and electrically connect the corresponding cavity of another plane of pressure point In vivo, the tie point of the power outlet of heater and introducing power supply and temperature controller and fuse is entirely located in the plane of large cavity Interior, the space of cavity is larger, the isolation that can be convenient between the power supply contact and conducting wire of opposed polarity, non-interference, in structure Optimization bring the improvement and promotion of safety and reliability.Embodiment: see the structure chart of oaks Gree money component.2, lattice Power CN102271429A.Prior art feature defect: (1) temperature control and fuse are respectively positioned on surface and the considerable part of bracket pedestal It is exposed, in use, control device vulnerable to pollution, erosion, cause to fail under moist, corrosive environment.(2) electricity of live part Source contact and power supply lead wire are all located in the outer surface of bracket pedestal, aging are easy under moist, corrosive environment, insulation reduces Lead to safety hazards.Invention effect: (1) temperature controller and temperature fuse heating, ventilation normal operating conditions and It heats under nonventilated abnormality, the difference of the temperature difference on temperature-sensitive surface is significantly different.That is: when fan motor breaks down When the PTC heater being caused to be in the abnormal operation of calm dry combustion method, it is positioned at the temperature controller and temperature of rack surface It spends fuse and the temperature difference under ventilation, the working condition heated is more obvious, in the state of stuffy dry-fire condition, energy Effective moment disconnects protection.(2) because of temperature controller and temperature fuse under ventilation operation state directly by circulation from The preferable heat dissipation of right wind, reliably avoids under ventilation operation state, because of temperature controller and temperature fuse temperature surface It is malfunctioned caused by heat dissipation effect is poor.(3) temperature controller and temperature fuse are sealed in inside the pedestal of mounting bracket And the spreader surface of PTC heater part is fitted in, it is not take up electrode leads to client and power supply in the first mounting bracket pedestal The volume of cavity where tie point makes have bigger installation empty between temperature control and the opposed polarity power supply line and tie point of fuse Between and separated, enough creepage distances and electric clearance is effectively guaranteed.(4) when assembling, the positioning of power supply harness and behaviour It is obviously increased as space, substantially increases packaging efficiency, significantly reduce manufacturing cost.

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.

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.

Invention effect: it makes up in device formation curing process because of tail end heater caused by tooling and human negligence Fit clearance between radiator prevents to thereby result in coming unglued between heater and radiator, degumming, it is ensured that heater Adhesive strength 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 sealant in the combination gap of the pedestal of bracket and heating device Dual and reinforcement sealing, the chamfering or groove of (2) faying face can effectively store the preferable sealant of mobility, thoroughly prevent to seep Water has improved waterproof performance.(3) sealant received is deposited at chamfering and increases bonded area, is improved bond strength, is prolonged Service life has been grown, 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, the sub-assembly containing 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:

(1) temperature control is located in the cavity of bracket pedestal, heating device temperature controller temperature surface under the working condition of ventilation Temperature change and dry-fire condition difference when being abnormal are unobvious, and the temperature of temperature surface can be made by needing longer recovery time Reach protection temperature.(2) temperature difference of ventilation state and dry-fire condition is unobvious, is easy to cause malfunction.(3) temperature control cavity is placed in In the pedestal of bracket, the space occupied is big, power supply line and the tie point interference being easy to cause in pedestal cavity between opposed polarity, hair Raw short circuit or the significant safeties accident such as climb electricity.3, invention effect: (1) temperature controller and temperature fuse are in heating, ventilation Normal operating conditions and heat under nonventilated abnormality, the difference of the temperature difference on temperature-sensitive surface is significantly different.That is: when Fan motor breaks down when the PTC heater being caused to be in the abnormal operation of calm dry combustion method, is positioned at rack surface Temperature controller and temperature fuse and ventilation, heating working condition under temperature difference it is more obvious, air-dried obstructed In the state of burning state, effective moment protection can be disconnected.(2) because temperature controller and temperature fuse are in ventilation operation state It is directly reliably avoided under ventilation operation state, by the preferable heat dissipation of wind cycle natural because of temperature controller and temperature down It is malfunctioned caused by the heat dissipation effect of degree fuse temperature surface is poor.(3) temperature controller and temperature fuse fit in PTC It is empty to be not take up electrode leads to client and power connection points place in the first mounting bracket pedestal for the spreader surface of heating device The volume of chamber makes to have bigger installation space between temperature control and the opposed polarity power supply line and tie point of fuse and be separated, Enough creepage distances and electric clearance is effectively guaranteed.

(1) the combination gap of the pedestal of bracket and heating device has sealant dual and reinforces sealing, and (2) faying face falls Angle or groove can effectively store the preferable sealant of mobility, thoroughly prevent to seep water, improved waterproof performance.(3) The sealant received is deposited at chamfering and increases bonded area, bond strength is improved, extends service life, prevents damp state and condensation Electric leakage caused by water droplet and short circuit.

Detailed description of the invention

Fig. 1 is the structural schematic diagram that the first mounting bracket of the invention uses small pit body；

Fig. 2 is the structural schematic diagram that heating device of the present invention is connected to power supply harness；

Fig. 3 is the structural schematic diagram of the second mounting bracket of the invention.

Specific embodiment

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

Embodiment 1

A kind of sub-assembly of PTC heater part, the PTC fever formed including PTC heat generating core and heat-conducting aluminium pipe and radiator Device and the first mounting bracket, the second mounting bracket 16 and the introducing power supply line for being connected to temperature controller 17 and temperature fuse 18 Beam, 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, 4 glue of heatproof insulating silicon between the PTC fever tablet and electrode strip thermal conductive surface With the heatproof insulating film for having coated the electrode strip for having clamped PTC heater element, first mounting bracket has 19 He of pedestal Capping 20, the pedestal 19 have along 2 elongated end of heating device electrode strip for accommodating the heating device opposed polarity electricity The exit of pole item and first cavity 26 for electrically connecting part and the power supply harness line and edge for introducing power supply harness The second cavity for covering, accommodating the radiator end of the heating device is bonded 6 end of radiator in second cavity and dissipates The small pit body 28 of temperature controller 17 and temperature fuse 18, the small pit body 28 are also accommodated and positioned at the wall thickness of hot surface Depth be much smaller than the temperature controller 17 and temperature fuse 18 length.

The length of the open face of small pit body 28 is close to the length with the temperature controller 17, temperature fuse 18.

The adjacent side of positionable wall for positioning the small pit body 28 of temperature fuse 18, which has, accommodates 18 power supply lead wire of fuse Positioning cavity groove 23.

Accommodate temperature fuse 18 18 power supply lead wire of small pit body 28 and adjacent temperature fuse positioning cavity groove 23 every From the gap 24 for having the company's of passing through pit body 28 and positioning cavity groove 23 on wall, the lead of the temperature fuse 18 is embedded in and passes through this Gap 24 is positioned in the positioning cavity groove 23 of the power supply lead wire.

There are the positioning temperature controller 17 and temperature fuse 18 and input in the big cavity of the opening of the first support There are receiving and the fixed power supply line in the locating groove of the connected opposed polarity power supply line of power supply, the locating groove side Dividing wall 32.

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 fever There are chamfering or groove at four peripheral wall mouths of the cavity wall of 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 power supply of temperature controller 17 and temperature fuse 18 Harness, first mounting bracket have pedestal 19 and capping 20, all engaging portion peripheries of the pedestal 19 and the capping 20 There are 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 14 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 (13)

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 Capping, the pedestal have along the heating device electrode strip elongated end for accommodating the heating device opposing electrode item Exit and first cavity for electrically connecting part and the power supply harness line for introducing power supply harness and bushing, receiving institute The second cavity for stating the radiator end of heating device is bonded the wall of radiator end heat-delivery surface in second cavity The small pit body of temperature controller and temperature fuse is also accommodated and positioned at thickness, and the depth of the small pit body is much smaller than the temperature Spend the length of controller and temperature fuse.

2. the sub-assembly of PTC heater part according to claim 1, it is characterised in that: the open face of the small pit body Length is close to the length with the temperature controller, temperature fuse.

3. the sub-assembly of PTC heater according to claim 2, it is characterised in that: in the positioning temperature fuse There is the positioning cavity groove for accommodating the fuse power supply lead wire in the adjacent side of the positionable wall of small pit body.

4. the sub-assembly of PTC heater part according to claims 1 to 3, it is characterised in that: the receiving temperature fuse Small pit body and adjacent temperature fuse power supply lead wire positioning cavity groove dividing wall on the company's of passing through pit body and positioning cavity groove Gap, the lead of the temperature fuse is embedded in and passes through the gap and be positioned in the positioning cavity groove of the power supply lead wire.

5. the sub-assembly of PTC heater part according to claim 4, 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.

6. the according to claim 1, sub-assembly of PTC heater part described in 2,3 or 5, it is characterised in that: the sub-assembly has One mounting bracket, the second mounting bracket, the power supply harness for being connected with temperature controller and temperature fuse, the first installation branch Frame has pedestal and capping, four peripheral walls of the pedestal and the cavity wall for accommodating, positioning heating device exit junction There are chamfering or groove at mouthful.

7. the sub-assembly of PTC heater part according to claim 6, 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.

8. the according to claim 1, sub-assembly of PTC heater part described in 2,3,5 or 7, it is characterised in that: the sub-assembly has First, second mounting bracket and the power supply harness for being connected with temperature controller and temperature fuse, first mounting bracket have There are chamfering or groove in all engaging portion peripheries of pedestal and capping, the pedestal and the capping.

9. the sub-assembly of PTC heater part according to claim 8, 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.

10. the according to claim 1, sub-assembly of PTC heater part described in 2,3,5,7 or 9, it is characterised in that: described first After the pedestal of mounting bracket covers capping, then put on heatproof, Insulating heat shrink, 70~120 degree at a temperature of, the heat Heat-Shrinkable Tubings are shunk, and the bracket are fixed, the closed entirety without any fit clearance that is sealed into surface.

11. the according to claim 1, sub-assembly of PTC heater part described in 2,3,5,7 or 9, it is characterised in that: PTC heater Part is by multiple groups parallel combination.

12. a kind of electric appliance, it is characterised in that: contain any PTC heater described in the claims 1,2,3,5,7 or 9 The sub-assembly of part.

13. electric appliance according to claim 12, 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.