CN109246863A - A kind of PTC heater part - Google Patents

Abstract

The invention discloses a kind of PTC heater parts, including heat generating core and the hollow heat-conducting aluminium pipe of thin-walled prolate and radiator, the surface of heat-conducting aluminium pipe is the roughly equal heat-conducting planar of wall thickness and press face, the width of press face is 0.5~6mm, heat generating core penetrate the heat-conducting aluminium pipe including radiator it is intracavitary after, by the press face pressurization to the heat-conducting aluminium pipe, substantially eliminate the width gaps between the heat generating core and the heat-conducting aluminium pipe cavity inner sidewall simultaneously.Using design of the invention, solve existing PTC heater part pipe internal heat generation body the thermal stress caused by moment cold and hot violent change in frequent operation discharges lead to the loosening of heat-conducting aluminium pipe 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 that caused by long-term arcing localized hyperthermia cause to insulate melting layer due to the surface electrification and electric leakage that generate, short circuit and breakdown, explode, burn the problem of indoor unit of inflammable plastics.

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, including heat generating core and the hollow heat-conducting aluminium pipe of thin-walled prolate and radiator, institute The surface for stating heat-conducting aluminium pipe is the roughly equal heat-conducting planar of wall thickness and press face, and the width of the press face is 0.5~6mm, The preparation process of the heat-conducting aluminium pipe 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 heat generating core has the first electrode item comprising conducting surface and thermal conductive surface and second electrode item, several PTC fever tablet that piece is clamped side by side by the thermal conductive surface of the electrode strip, between the PTC fever tablet and electrode strip thermal conductive surface Heatproof insulation silica gel and the heatproof insulating film composition for having coated the electrode strip for having clamped PTC heater element, the radiator It inlays or is welded on the heat-conducting planar of the heat-conducting aluminium pipe, the heat generating core penetrates the heat conduction aluminum lumen including radiator After interior, pressurizeed, made between the heat generating core and the heat-conducting aluminium pipe cavity inner sidewall by the press face to the heat-conducting aluminium pipe Width gaps substantially eliminate simultaneously, and the radiator is located on the heat-conducting planar of the heat-conducting aluminium pipe, are combined into the PTC hair Thermal device.

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:

It is easy for installation using the cooling fin of welded type, existing PTC heater part pipe internal heat generation body is solved in frequent operation The starting~heating~shutdown cooled middle thermal stress caused by moment cold and hot violent change release due to lead to the loosening of heat-conducting aluminium pipe 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 fever member Arcing between part and electrode slice, carbonization so caused by long-term arcing localized hyperthermia cause to insulate melting layer due to the table that generates Face 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 The problem of.

Detailed description of the invention

Fig. 1 is the heating device schematic diagram for the radiator that the present invention has wrapped up corrugated cooling strip using thermally conductive plain film.

Specific embodiment

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

Embodiment 1

A kind of PTC heater part, including heat generating core and the hollow heat-conducting aluminium pipe 1 of thin-walled prolate and radiator, the heat conduction aluminum The preparation process of pipe 1 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.

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 2 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 composition for having coated the electrode strip 2 for having clamped PTC heater element, the table of the heat-conducting aluminium pipe 1 Face is the roughly equal heat-conducting planar 8 of wall thickness and press face 9, and leading for the heat-conducting aluminium pipe 1 is inlayed or be welded on to the radiator 6 In hot plane 8, the heat generating core penetrate the heat-conducting aluminium pipe 1 including radiator 6 it is intracavitary after, by the heat-conducting aluminium pipe 1 Press face 9 pressurize, substantially eliminate the width gaps between 1 cavity inner sidewall of the heat generating core and the heat-conducting aluminium pipe simultaneously, The width of the press face is 0.5~6mm, and the radiator 6 is located on the heat-conducting planar 8 of the heat-conducting aluminium pipe 1, is combined into The PTC heater part.

Embodiment 2

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

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 (4)

1. a kind of PTC heater part, it is characterised in that: including heat generating core and the hollow heat-conducting aluminium pipe of thin-walled prolate and radiator, institute The surface for stating heat-conducting aluminium pipe is the roughly equal heat-conducting planar of wall thickness and press face, and the width of the press face is 0.5~6mm, The preparation process of the heat-conducting aluminium pipe 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 heat generating core has comprising conducting surface and thermally conductive If the first electrode item and second electrode item in face, dry plate by PTC fever tablet that the thermal conductive surface of the electrode strip clamps side by side, be located at Heatproof insulation between the PTC fever tablet and electrode strip thermal conductive surface and has coated the electricity for having clamped PTC heater element at silica gel The heatproof insulating film of pole item forms, and the radiator is inlayed or is welded on the heat-conducting planar of the heat-conducting aluminium pipe, the fever Core penetrate the heat-conducting aluminium pipe including radiator it is intracavitary after, pressurizeed by the press face to the heat-conducting aluminium pipe, make the hair Width gaps between hot core and the heat-conducting aluminium pipe cavity inner sidewall substantially eliminate simultaneously, and the radiator is located in described thermally conductive On the heat-conducting planar of aluminum pipe, it is combined into the PTC heater part.

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