CN109246864A - A kind of PTC heater part - Google Patents

Abstract

The invention discloses a kind of PTC heater parts, include PTC heat generating core and heat-conducting aluminium pipe and radiator, and the heat-conducting aluminium pipe has heat-conducting planar and press face, and the wall thickness of the heat-conducting planar is more than 3 times of the press face wall thickness, and the radiator includes heat dissipation gear piece.Using design of the invention, increase heat dissipation area, reduce aluminium cost, the shape of cooling fin can reach storage and accommodate condensation water droplet caused by the later surface temperature difference because of heater of shutdown, prevent the effect that this part water droplet is blown into functional defect caused by interior in booting work again with the heat exchange air quantity of moment.

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 PTC heat generating core and heat-conducting aluminium pipe and radiator, the heat-conducting aluminium pipe There are heat-conducting planar and press face, the wall thickness of the heat-conducting planar is more than 3 times of the press face wall thickness, and the radiator includes dissipating Hot gear piece, the heat-conducting planar wall thickness that the heat-conducting aluminium pipe shovel is cut at heat dissipation gear piece is 3~15mm, and the heat dissipation gear piece width is 11.5~24.5mm is highly 5~17mm, and two sides of the heat dissipation gear piece on the heat-conducting aluminium pipe heat-conducting planar are that width is less than institute The positioning press face of cooling fin width is stated, the wall thickness of the positioning press face is 0.1~1.5mm, and width is 0.5~6mm, described Two side thickness of heat-conducting aluminium pipe are 0.2~2.5mm, the heat dissipation gear piece with a thickness of 0.02~2.5mm, the heat-conducting aluminium pipe Preparation process are as follows:

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.

Compacting, which can be taken, rolls two side press faces to the pressurization of two side press faces and multiple groups idler wheel.

Further, the radiator is the heat dissipation gear piece being cut at the heat-conducting planar wall thickness of the heat-conducting aluminium pipe through shovel, If the heat generating core has the first electrode item comprising conducting surface and thermal conductive surface and second electrode item, dry plate to be led by the electrode strip PTC fever tablet, heatproof insulation silica gel and the heatproof insulating film composition that hot face clamps side by side.

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 heat generating core Penetrate the heat-conducting aluminium pipe including the gear piece that radiates it is intracavitary after, pressurizeed by press face to the heat-conducting aluminium pipe, make the heat generating core Width gaps between the heat-conducting aluminium pipe cavity inner sidewall substantially eliminate rear group and are combined into the PTC heater part, the fever The end heat-conducting aluminium pipe that device is located at power supply leading-in end, which exceeds, corresponds to 5~50mm of the end radiation tooth piece end.

Further, the width direction of heat dissipation gear piece has no less than 1 folded angular surface on the heat-conducting aluminium pipe, the dog-ear Corner angle is 5~40 degree.

Further, the heat dissipation gear piece has generally arcuate cambered surface along radiating surface width direction, and the chord width of the cambered surface is 2 ~8mm bends a height of 0.1~1.5mm.

Invention effect: 1, increasing heat dissipation area, 2, reduce aluminium cost, 3, the shape of cooling fin can reach storage and receiving Condensation water droplet caused by the later surface temperature difference because of heater of shutdown prevents this part water droplet in booting work again with moment Heat exchange air quantity is blown into the effect of functional defect caused by interior.

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:

Using teeth formula cooling fin, 1, increase heat dissipation area, 2, reduce aluminium cost, 3, the shape of cooling fin can reach storage Condensation water droplet caused by shutting down the later surface temperature difference because of heater is deposited and accommodated, prevents this part water droplet in the work that is switched on again The effect of functional defect caused by interior is blown into the heat exchange air quantity of moment.

Detailed description of the invention

Fig. 1 is sector teeth formula heating device structural schematic diagram of the present invention；

Fig. 2 is that the present invention shovels the heating device structural schematic diagram for cutting dog-ear in the width direction；

Fig. 3 is that the present invention shovels the heating device structural schematic diagram for cutting arch cambered surface in the width direction.

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 PTC heat generating core and heat-conducting aluminium pipe and radiator, the heat-conducting aluminium pipe 1 have thermally conductive flat Face 8 and press face 9, the wall thickness of the heat-conducting planar 8 are more than 3 times of 9 wall thickness of press face, and the radiator includes radiation tooth Piece, the preparation process of the heat-conducting aluminium pipe are as follows:

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.

Radiator 6 is at 8 wall thickness of heat-conducting planar of the heat-conducting aluminium pipe 1 through shoveling the heat dissipation gear piece 10 being cut into, the fever If core have the first electrode item comprising conducting surface and thermal conductive surface and second electrode item, dry plate by the thermal conductive surface of the electrode strip 2 simultaneously PTC fever tablet 3, heatproof insulation silica gel 4 and the heatproof insulating film 5 for arranging clamping form.

It is 3mm that heat-conducting aluminium pipe 1, which shovels the heat-conducting planar wall thickness cut at heat dissipation gear piece 10, and 10 width of heat dissipation gear piece is 11.5mm is highly 5mm, and two sides of the heat dissipation gear piece 10 on 1 heat-conducting planar of heat-conducting aluminium pipe are that width is less than the heat dissipation The wall thickness of the positioning press face 9 of piece width, the positioning press face 9 is 0.1mm, width 0.5mm, the two of the heat-conducting aluminium pipe Side thickness is 0.2mm, it is described heat dissipation gear piece 10 with a thickness of 0.02mm.

If 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 PTC fever tablet 3 that 2 thermal conductive surface clamps side by side, the heatproof insulating silicon between 2 thermal conductive surface of the PTC fever tablet 3 and electrode strip Glue 4 and coated the electrode strip for having clamped PTC heater element heatproof insulating film 5 form, the heat generating core penetrate including After the heat-conducting aluminium pipe 1 of heat dissipation gear piece 10 is intracavitary, is pressurizeed by the press face to the heat-conducting aluminium pipe 1, make the heat generating core and institute It states the width gaps between 1 cavity inner sidewall of heat-conducting aluminium pipe and substantially eliminates rear group and be combined into the PTC heater part, the heating device Exceed positioned at the end heat-conducting aluminium pipe 1 of power supply leading-in end and corresponds to end heat dissipation 10 end 5mm of gear piece.

The width direction of heat dissipation gear piece 10 has no less than 1 folded angular surface 11, the corner angle of the dog-ear on heat-conducting aluminium pipe 1 It is 5~40 degree.

Embodiment 2

A kind of PTC heater part, including PTC heat generating core and heat-conducting aluminium pipe 1 and radiator, the heat-conducting aluminium pipe 1 have thermally conductive Plane 8 and press face 9, the wall thickness of the heat-conducting planar 8 are more than 3 times of 9 wall thickness of press face, and the radiator includes heat dissipation Gear piece 10, the preparation process of the heat-conducting aluminium pipe 1 are as follows:

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.

Radiator 6 is at 8 wall thickness of heat-conducting planar of the heat-conducting aluminium pipe 1 through shoveling the heat dissipation gear piece 10 being cut into, the fever If core have the first electrode item comprising conducting surface and thermal conductive surface and second electrode item, dry plate by the thermal conductive surface of the electrode strip 2 simultaneously PTC fever tablet 3, heatproof insulation silica gel 4 and the heatproof insulating film 5 for arranging clamping form.

It is 15mm that heat-conducting aluminium pipe 1, which shovels 8 wall thickness of heat-conducting planar cut at heat dissipation gear piece 10, and 10 width of heat dissipation gear piece is 24.5mm is highly 17mm, and two sides of the heat dissipation gear piece 10 on 1 heat-conducting planar 8 of heat-conducting aluminium pipe are that width is less than described dissipate The positioning press face 9 of backing width, it is described positioning press face 9 wall thickness be 1.5mm, width 6mm, the heat-conducting aluminium pipe 1 Two side thickness be 2.5mm, it is described heat dissipation gear piece 10 with a thickness of 2.5mm.

If 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 PTC fever tablet 3 that 2 thermal conductive surface clamps side by side, the heatproof insulating silicon between 2 thermal conductive surface of the PTC fever tablet 3 and electrode strip Glue 4 and coated the electrode strip 2 for having clamped PTC heater element heatproof insulating film 5 form, the heat generating core penetrate including After the heat-conducting aluminium pipe 1 of heat dissipation gear piece 10 is intracavitary, is pressurizeed by the press face 9 to the heat-conducting aluminium pipe 1, make the heat generating core and institute It states the width gaps between 1 cavity inner sidewall of heat-conducting aluminium pipe and substantially eliminates rear group and be combined into the PTC heater part, the heating device Exceed positioned at the end heat-conducting aluminium pipe 1 of power supply leading-in end and corresponds to end heat dissipation 10 end 50mm of gear piece.

Heat dissipation gear piece 10 has generally arcuate cambered surface 12 along radiating surface width direction, and the chord width of the cambered surface 12 is 2~8mm, Bend a height of 0.1~1.5mm.

Embodiment 3

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 (7)

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-conducting aluminium pipe There are heat-conducting planar and press face, the wall thickness of the heat-conducting planar is more than 3 times of the press face wall thickness, and the radiator includes dissipating Hot gear piece, the heat-conducting planar wall thickness that the heat-conducting aluminium pipe shovel is cut at heat dissipation gear piece is 3~15mm, and the heat dissipation gear piece width is 11.5~24.5mm is highly 5~17mm, and two sides of the heat dissipation gear piece on the heat-conducting aluminium pipe heat-conducting planar are that width is less than institute The positioning press face of cooling fin width is stated, the wall thickness of the positioning press face is 0.1~1.5mm, and width is 0.5~6mm, described Two side thickness of heat-conducting aluminium pipe are 0.2~2.5mm, the heat dissipation gear piece with a thickness of 0.02~2.5mm, the heat-conducting aluminium pipe Preparation process are as follows:

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

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

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

2. PTC heater part according to claim 1, it is characterised in that: the radiator is leading for the heat-conducting aluminium pipe Shoveled the heat dissipation gear piece that is cut at hot flat wall thickness, the heat generating core has the first electrode article comprising conducting surface and thermal conductive surface and the Silica gel and heatproof insulation if the PTC fever tablet that two electrode strips, dry plate are clamped side by side by the thermal conductive surface of the electrode strip, heatproof insulate Film composition.

3. 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, the heat generating core penetrate the heat-conducting aluminium pipe including the gear piece that radiates it is intracavitary after, by being led to described The press face of hot aluminum pipe is pressurizeed, after substantially eliminating the width gaps between the heat generating core and the heat-conducting aluminium pipe cavity inner sidewall Group is combined into the PTC heater part, and the end heat-conducting aluminium pipe that the heating device is located at power supply leading-in end, which exceeds, corresponds to the end Radiation tooth piece 5~50mm of end.

4. PTC heater part according to any one of claims 1 to 3, it is characterised in that: radiate on the heat-conducting aluminium pipe The width direction of gear piece has no less than 1 folded angular surface, and the corner angle of the dog-ear is 5~40 degree.

5. PTC heater part according to any one of claims 1 to 3, it is characterised in that: the heat dissipation gear piece is along heat dissipation Face width direction has generally arcuate cambered surface, and the chord width of the cambered surface is 2~8mm, bends a height of 0.1~1.5mm.

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

7. electric appliance according to claim 6, 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.