CN209676510U - A kind of ptc heater part and the electric appliance containing it - Google Patents

Abstract

The utility model discloses a kind of ptc heater part, including PTC heat generating core and heat-conducting aluminium pipe and radiator, the periphery of the insulating film of heat generating core electrode leads to client part and the heat-conducting aluminium pipe junction has been coated with heatproof electric insulating sealant.The design of heatproof electric insulating sealant has been coated with using the insulating film of heat generating core electrode leads to client part and the periphery of the heat-conducting aluminium pipe junction, it can be effectively prevented when being used in wet environment because of heating device, condensation water droplet is penetrated into the gap between heat generating core and heat-conducting aluminium pipe inside by the gap of the junction of heat-conducting aluminium pipe and heat generating core, water droplet intrusion is caused to be caused the electric leakage of heating device between the electrode strip that insulating film coats and PTC fever tablet, it is on-insulated, or even short circuit occurs using electric equipment products such as the air-conditionings of PTC heater part, the failure such as breakdown and explosion, burning, the great safety hazards such as electric leakage.

Description

A kind of ptc heater part and the electric appliance containing it

Technical field

The utility model relates to a kind of thermal sensitive ceramic heater, there is the heat-conducting aluminium pipe of main body reinforcing rib in especially a kind of side A kind of ptc heater part and the electric appliance containing it.

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 ptc heater part, including PTC heat generating core and heat-conducting aluminium pipe and radiator, the heat generating core have If first electrode item and second electrode item, dry plate comprising conducting surface and thermal conductive surface are clamped side by side by the thermal conductive surface of the electrode strip PTC fever tablet, the heatproof insulation silica gel between the PTC fever tablet and electrode strip thermal conductive surface and coated the clamping The heatproof insulating film of the electrode strip of PTC heater element forms, and there is a no less than column in the heat-conducting aluminium pipe side of the heating device Body reinforcing rib, the cylinder reinforcing rib the side of the heat-conducting aluminium pipe heater be substantially centered position and with the heat-conducting aluminium pipe Isometric, the section of the cylinder reinforcing rib is that chord width is 0.3~2mm, bends the generally arcuate of a height of 0.2~2mm.

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 utility model is in terms of existing technologies:

Existing heat generating core is the groove of formation side after rolling, is generated heat improvement heater element and electrode slice and aluminum pipe Contact between face, improving the thermal efficiency has good effect.The utility model can greatly improve rolling after heat generating core because Uniform configuration change and discharge stress caused by bending, guarantee roll after product it is straight, indeformable.It is for length 500~1000mm or more (on-hook, cabinet-type air conditioner between 1.5~5), the reinforcing rib of side are greatly improved bending resistance, anti-folding by force Degree, 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 in being coated on heater element, lead Cladding intensity between electric electrode slice and insulating layer effectively eliminates pipe internal heat generation body in starting~heating~shutdown of frequent operation The cooled middle thermal stress caused by moment cold and hot violent change discharges and leads to the loosening of heat-conducting aluminium pipe and generate pipe internal heat generation element Gap between 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 insulate melting layer due to generate surface electrification and electric leakage, short circuit and Breakdown is exploded, the generation of a series of great and pernicious safety hazards such as the indoor unit that burns inflammable plastics.

Since aluminum pipe is small compared with comparing for no reinforcing rib to the recess dimensions of aluminum pipe inner cavity in the rolling process after poling, It can achieve in this way and reduce the tube wall of side in pressing process and insulate to the compressive zone of insulating film the on-insulated peace of membrane damage Full property hidden danger；

The reinforcing rib of side more favorably eliminate when aluminum pipe heater rolls after poling aluminum pipe eliminate manage in each part it Between irregularly prolonging along length and width direction during gap (extension including aluminum pipe wall thickness itself) between tube wall Stretch, under the premise of extending uniform, electrode slice, insulating film and PTC heater element inside aluminum pipe will with the thermally conductive inner wall of aluminum pipe it Between it is each to being tightly combined, positive effect can be brought to the thermal efficiency, anti-aging property and the long term reliability that improve product Fruit；

Under the premise of combining even closer between each part in the uniform pipe of the contraction of aluminum pipe, to improvement product because cold and hot The action noise that violent change generates is obviously improved effect.

Detailed description of the invention

Fig. 1 is structural schematic diagram of the utility model using the heat-conducting aluminium pipe of cylinder reinforcing rib.

Specific embodiment

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

Embodiment 1

As shown in Figure 1, a kind of ptc heater part, including PTC heat generating core and heat-conducting aluminium pipe and radiator, the heat generating core If having first electrode item and second electrode item, dry plate comprising conducting surface and thermal conductive surface arranged side by side by the thermal conductive surface of the electrode strip 2 The PTC fever tablet of clamping, the heatproof insulation between 2 thermal conductive surface of the PTC fever tablet and electrode strip and have coated described silica gel The heatproof insulating film 5 for having clamped the electrode strip 2 of PTC heater element forms, and 1 side of heat-conducting aluminium pipe of the heating device has not Less than one cylinder reinforcing rib 15, the cylinder reinforcing rib 15 are substantially centered position in the side of 1 heater of heat-conducting aluminium pipe And it is isometric with the heat-conducting aluminium pipe 1, the section of the cylinder reinforcing rib 15 is that chord width is 0.3-2mm, bends a height of 0.2~2mm's It is generally arcuate.

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 (3)

1. a kind of ptc heater part, it is characterised in that: including PTC heat generating core and heat-conducting aluminium pipe and radiator, the heat generating core has If first electrode item and second electrode item, dry plate comprising conducting surface and thermal conductive surface are clamped side by side by the thermal conductive surface of the electrode strip PTC fever tablet, the heatproof insulation silica gel between the PTC fever tablet and electrode strip thermal conductive surface and coated the clamping The heatproof insulating film of the electrode strip of PTC heater element forms, and there is a no less than column in the heat-conducting aluminium pipe side of the heating device Body reinforcing rib, the cylinder reinforcing rib the side of the heat-conducting aluminium pipe heater be substantially centered position and with the heat-conducting aluminium pipe Isometric, the section of the cylinder reinforcing rib is that chord width is 0.3~2mm, bends the generally arcuate of a height of 0.2~2mm.

2. a kind of electric appliance, it is characterised in that: contain ptc heater part described in claim 1.

3. electric appliance according to claim 2, 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.