CN109275207A - The heat sink strip and heating device and dedicated electric appliance of a kind of PTC thermo-sensitive material heating device - Google Patents
The heat sink strip and heating device and dedicated electric appliance of a kind of PTC thermo-sensitive material heating device Download PDFInfo
- Publication number
- CN109275207A CN109275207A CN201810950976.3A CN201810950976A CN109275207A CN 109275207 A CN109275207 A CN 109275207A CN 201810950976 A CN201810950976 A CN 201810950976A CN 109275207 A CN109275207 A CN 109275207A
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- CN
- China
- Prior art keywords
- heating device
- radiatinig corrugated
- ptc
- gear
- sensitive material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 35
- 239000000463 material Substances 0.000 title claims abstract description 24
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 23
- 239000004411 aluminium Substances 0.000 claims abstract description 11
- 238000004378 air conditioning Methods 0.000 claims description 7
- 206010037660 Pyrexia Diseases 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000005253 cladding Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 238000007670 refining Methods 0.000 claims description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 238000009825 accumulation Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 10
- 230000017525 heat dissipation Effects 0.000 description 7
- 230000005494 condensation Effects 0.000 description 6
- 238000009833 condensation Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000037452 priming Effects 0.000 description 2
- 229910009973 Ti2O3 Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- GQUJEMVIKWQAEH-UHFFFAOYSA-N titanium(III) oxide Chemical compound O=[Ti]O[Ti]=O GQUJEMVIKWQAEH-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
- H05B3/04—Waterproof or air-tight seals for heaters
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
- H05B3/141—Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Resistance Heating (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a kind of heat sink strips of PTC thermo-sensitive material heating device, including the radiatinig corrugated clamped by thermally conductive plain film and flanging positioning thermally conductive sheet, the radiatinig corrugated has a no less than recess cambered surface, the recess cambered surface parallel with the width direction of the radiatinig corrugated in the width direction of radiating surface；The radiatinig corrugated engages roll compacting by a pair of of continous way gear of gear-hobbing machine by aluminium strip and forms.Meanwhile the invention also discloses above-mentioned PTC thermo-sensitive material heating devices and dedicated electric appliance using the heat sink strip.The design in radiatinig corrugated face of the present invention can make the accumulation of minor amount of water drop and be contained in recess or folded angular surface, moment after secondary booting is not blown out, as the moment of heating device generates heat, micro condensing drip is heated volatilization immediately, use environment is effectively improved, the intensity of heat sink strip and ptc heater and the use reliability and environment-friendly function of ptc heater and electric appliance are improved.
Description
Technical field
The invention belongs to thermal sensitive ceramics manufacturing technology field, especially a kind of heat sink strip of PTC thermo-sensitive material heating device
And heating device and dedicated electric appliance.
Background technique
Patent enclosed positive temperature coefficient thermistor heater, the patent No. 200620034186, ripple are S-shapeds, although
It is advantageous to improve condensation, but S type cooling fin and trapezoidal reinforcing rib can not be formed and be produced in batches, even if craft or 3D draw a design out
Sample, not can avoid because needing to make itself and weld tabs not to open when being sufficiently bonded just and can guarantee in vacuum welding yet, desoldering due to right
Bring deforms when clamping the pressurization of fixinig plate up and down of ripple bar, distortion equal strength is low and the defect of failure welding.
Furthermore such as patent corrugated fins item, the patent No. 201320036750.5 are disclosed using with the two-sided of solder
Composite band, material cost is more than 1 times or more that common aluminium flake adds soldering weldering foil, since the temperature of welding is much higher than the molten of weldering foil
Point temperature, manufacturing cost is high, is also easy desoldering.In addition the technology is further simultaneously disclosed using spot welding, ultrasonic bonding, Laser Welding
Etc. techniques, these techniques have the defects that the poor bonding strength between the radiatinig corrugated of heat sink strip and thermally conductive sheet.If using
The technique for sticking, although manufacturing cost is low, since in the manufacturing process of heater, radiatinig corrugated and thermally conductive sheet are combined
Heat sink strip and fever tablet between have to form simultaneously, hot setting, these will all be completed by hand, can not form scale
Production, low efficiency, manufacturing cost are also high.
Air-conditioning be used for a long time in winter shutdown after, the heatsink temperature of heater be rapidly decreased to from 100 DEG C or so 0 DEG C with
Under, frosting can be led to because of the variation of environment temperature in this moment, when room temperature is raised to 0 DEG C or more, because the thawing of frost forms water droplet
Accumulation forms condensation on a heat sink.Since its radiating surface of the radiatinig corrugated of prior art is continuous level no concave-convex knot
Structure, the frost or water droplet of condensation can accumulate in bottom along heating plane, thus there is the heat exchange wind of secondary booting operating instant
Product is attached to the hidden danger of the water droplet blowout on radiatinig corrugated surface, leads to customer complaint.
Summary of the invention
Goal of the invention: the present invention can not be formed and be produced in batches for traditional heat-dissipating S type cooling fin and trapezoidal reinforcing rib,
Not can avoid because needing to make itself and weld tabs not to open when sufficiently be bonded just and can guarantee in vacuum welding, desoldering due to clamping ripple bar
The pressurization of fixinig plate up and down when bring deformation, equal strength is low and the defect of failure welding for distortion, manufacturing cost is high, is easy de-
Weldering the problem of the defect of the poor bonding strength between radiatinig corrugated and thermally conductive sheet, provides a kind of PTC thermo-sensitive material heating device
Heat sink strip.
The second object of the present invention is to provide the heating device containing PTC thermo-sensitive material.
The third object of the present invention is to provide the dedicated electric appliance using above-mentioned heat sink strip.
Technical solution: in order to achieve the above object of the invention, the present invention is specifically achieved like this: a kind of PTC temperature-sensitive material
The heat sink strip for expecting heating device, including the radiatinig corrugated clamped by thermally conductive plain film and flanging positioning thermally conductive sheet, the heat dissipation wave
Line has a no less than recess cambered surface, the width of the recess cambered surface and the radiatinig corrugated in the width direction of radiating surface
Direction is parallel；The radiatinig corrugated engages roll compacting by a pair of of continous way gear of gear-hobbing machine by aluminium strip and forms, the gear-hobbing machine
Each pair of gear each flank of tooth on be all provided with the indent/arcuate surface for being parallel to facewidth direction, pass through the gear in opposite directions nibble
Transmission is closed, the recess cambered surface parallel with the width direction of the radiatinig corrugated is rolled out on the radiatinig corrugated.
Wherein, the short transverse of the radiatinig corrugated also has concave face, folding fan face or concave face and folding fan face, described recessed
The face of falling into, folded angular surface or concave face and folding fan face are vertical with the width direction of the radiatinig corrugated；The radiatinig corrugated is led to by aluminium strip
A pair of of the continous way gear engagement roll compacting for crossing gear-hobbing machine forms, and is equipped on each flank of tooth of each pair of gear of the gear-hobbing machine flat
Row is rolled on the radiatinig corrugated in the indent/arcuate surface in facewidth direction by the opposite engaged transmission of the gear simultaneously
Out half arc concave face, folded angular surface or the concave face vertical with the width direction of the radiatinig corrugated and folded angular surface and with the heat dissipation
The parallel recess cambered surface of the width direction of ripple.
A kind of heating device of PTC thermo-sensitive material, contains above-mentioned power heat sink strip.
Wherein, the heating device includes PTC heater, and the heater is to have penetrated in hollow heat-conducting aluminium pipe by exhausted
Velum cladding between two strip electrode pieces it is in parallel pasted the heat generating core of PTC temperature-sensitive heater element after, repressed aluminum pipe it is thermally conductive
Face eliminates the gap of the intracorporal heat generating core of the fever and the aluminum pipe inner wall, forms the PTC heater of surface insulation,
The aluminum pipe heat-transfer surface of the heater forms the PTC thermo-sensitive material heating device after being bonded the heat sink strip.
Wherein, the heating device includes PTC heater element, and the principal component of the PTC heater element is Ba(1-x)
PbxTiO3, the Ti are rutile TiO_2 raw ore through refining, and the molar ratio of Ti is greater than 1.00% in the principal component.
Wherein, the heating device includes PTC heater, and the heater is to have penetrated in hollow heat-conducting aluminium pipe by exhausted
Velum cladding between two strip electrode pieces it is in parallel pasted the heat generating core of PTC temperature-sensitive heater element after, repressed aluminum pipe it is thermally conductive
Face eliminates the gap of the intracorporal heat generating core of the fever and the aluminum pipe inner wall, forms the PTC heater of surface insulation,
The aluminum pipe heat-transfer surface of the heater forms the PTC thermo-sensitive material heating device after being bonded the heat sink strip.
A kind of electric appliance, the heating device containing any of the above-described kind of PTC thermo-sensitive material.
Wherein, the electric appliance be selected from air-conditioning, warm-air drier, hot air curtain device, super bath, dehumidifier, air purifier, dryer,
One kind of automobile warm-air or demisting defroster.
The utility model has the advantages that the present invention compared with traditional technology, has the advantages that
(1) radiatinig corrugated face of the present invention is designed as concave shape or turns up face, can make the accumulation of minor amount of water drop and be contained in institute
The groove stated is turned up in face, and the moment after secondary booting is not blown out, as the moment of heating device generates heat, micro condensation
Water droplet is heated volatilization immediately, effectively improves use environment, improves comforts of use and environment-friendly function, additionally due to plus
It needs to apply biggish pressing force to the radiating surface of heat sink strip to guarantee to make to be fitted on radiating surface in the forming process of thermal device
PTC temperature-sensitive heater and heat sink strip between integrally combine, reach optimal heat dissipation effect and the thermal efficiency, heat dissipation wave of the invention
The bumps of line or the structure for turning up face can also make the radiating surface of heat sink strip in the forming and hardening of heating device, when by perpendicular to
It will not be deformed when the pressing force of radiatinig corrugated, greatly increase the intensity of heat sink strip；
(2) droplet that frosting condensation generates is natural, disperse, irregular shunting is in concave face or serrated face and recess and sawtooth
In faying face, in repeated priming moment, because being heated rapidly on cooling fin without droplet and heater, it can be ensured that both blown without water droplet
Out, the water droplet that product is attached in recess or serrated face can be dryouied rapidly again, so as to the puzzled air-conditioning producer of effective solution and shadow
Thermal sensitive ceramic heater is rung the problem of the repeated priming moment of commercial applications comprehensive on air-conditioning blowing out water droplet because of condensation；
(3) heat dissipation area of the faying face of concave face, serrated face, recess and sawtooth is far longer than prior art, greatly improves
The heat dissipation area and the thermal efficiency of heater.It is structurally equivalent to add reinforcing rib to radiatinig corrugated, substantially improves and improve
The intensity of heater.Due to frosting water droplet can simultaneously, the irregular height for being diverted to radiatinig corrugated radiating surface and width
In each concave face in direction, be effectively reduced the concentration of subtle droplet existing for prior art converge in bottom formed ponding or
The defect of large water droplet；
(4) simple production process, be easy to control, high yield rate, manufacturing cost it is also low；
(5) this technology uses 1.0% mole or more excessive Ti2O3, ensure that the content of Ti in formula in 1, ensure that formula
The superiority of stability and electrical property, by the PTC heater element of this formula production, yield rate reaches 98% or more, and the heat of element is steady
It is qualitative it is good, interpolar is high pressure resistant, especially suitable for requiring in the electric equipment products such as relatively high air-conditioning heater service performance；
(6) principle for applying engaged gears, can set in principle according to the present invention, improvement on existing ripple gear hobbing molding machine
Meter tooth form is that the continous way cutter or mold of recess, sawtooth and recess plus serrated face are produced in enormous quantities.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the recess cambered surface of the parallel radiatinig corrugated width direction of the present invention；
Fig. 2 is structural schematic diagram of the recess cambered surface of the parallel radiatinig corrugated width direction of the present invention in conjunction with concave face, folding fan face；
Fig. 3 is the structural schematic diagram of heating device of the present invention.
Specific embodiment
Embodiment 1:
The heat sink strip of PTC thermo-sensitive material heating device as shown in Figure 1, including 2 institute of thermally conductive sheet is positioned by thermally conductive plain film 1 and flanging
The radiatinig corrugated 3 of clamping, the radiatinig corrugated have a no less than recess cambered surface 303, institute in the width direction of radiating surface
It is parallel with the width direction of the radiatinig corrugated to state recess cambered surface 303；A pair that the radiatinig corrugated passes through gear-hobbing machine by aluminium strip
The engagement roll compacting of continous way gear forms, and is all provided on each flank of tooth of each pair of gear of the gear-hobbing machine and is parallel to facewidth direction
Indent/arcuate surface is rolled out and the radiatinig corrugated by the opposite engaged transmission of the gear on the radiatinig corrugated
The parallel recess cambered surface of width direction.
Embodiment 2:
It is as shown in Figure 2, reference implementation example 1, the short transverse of the radiatinig corrugated also have concave face 301, folding fan face 302 or
Concave face 301 and folding fan face 302, the concave face 301, folded angular surface 302 or concave face 301 and folding fan face 302 and the heat dissipation
The width direction of ripple is vertical；The radiatinig corrugated engages roll compacting by a pair of of continous way gear of gear-hobbing machine by aluminium strip and forms,
It is all provided with the indent/arcuate surface for being parallel to facewidth direction on each flank of tooth of each pair of gear of the gear-hobbing machine, passes through the tooth
The opposite engaged transmission of wheel, rolls out half arc vertical with the width direction of the radiatinig corrugated simultaneously on the radiatinig corrugated
Concave face, folded angular surface or concave face and folded angular surface and the recess cambered surface parallel with the width direction of the radiatinig corrugated.
Embodiment 3:
The heating device of PTC thermo-sensitive material as shown in Figure 3 contains heat sink strip described in above-described embodiment, including PTC fever member
Part, the principal component of the PTC heater element are Ba(1-x)PbxTiO3, the Ti are rutile TiO_2 raw ore through refining,
The molar ratio of Ti is greater than 1.00% in the principal component；It further include PTC heater, the heater is in hollow heat-conducting aluminium pipe
After having penetrated the heat generating core 1001 for having pasted PTC temperature-sensitive heater element by the parallel connection between two strip electrode pieces of insulating film cladding, warp
The thermal conductive surface for suppressing aluminum pipe eliminates the gap of the intracorporal heat generating core of the fever and the aluminum pipe inner wall, forms surface insulation
PTC heater, form the PTC thermo-sensitive material after the aluminum pipe heat-transfer surface of the heater is bonded the heat sink strip 1002
Heating device.
Embodiment 4:
A kind of electric appliance, the heating device containing PTC thermo-sensitive material described in above-described embodiment, the electric appliance be selected from air-conditioning, warm-air drier,
One kind of hot air curtain device, super bath, dehumidifier, air purifier, dryer, automobile warm-air or demisting defroster.
Claims (7)
1. a kind of heat sink strip of PTC thermo-sensitive material heating device, which is characterized in that including thermally conductive by thermally conductive plain film and flanging positioning
Radiatinig corrugated clamped by piece, the radiatinig corrugated have a no less than recess cambered surface, institute in the width direction of radiating surface
It is parallel with the width direction of the radiatinig corrugated to state recess cambered surface；The radiatinig corrugated is continuous by a pair of gear-hobbing machine by aluminium strip
The engagement roll compacting of formula gear forms, and is all provided on each flank of tooth of each pair of gear of the gear-hobbing machine and is parallel to the interior of facewidth direction
Recessed/arcuate surface rolls out the width with the radiatinig corrugated by the opposite engaged transmission of the gear on the radiatinig corrugated
Spend the parallel recess cambered surface in direction.
2. the heat sink strip of PTC thermo-sensitive material heating device according to claim 1, which is characterized in that the radiatinig corrugated
Short transverse has concave face, folding fan face or concave face and a folding fan face, the concave face, folded angular surface or concave face and folding fan face with
The width direction of the radiatinig corrugated is vertical；The radiatinig corrugated is rolled by aluminium strip by a pair of of continous way gear engagement of gear-hobbing machine
It presses, the indent/arcuate surface for being parallel to facewidth direction is all provided on each flank of tooth of each pair of gear of the gear-hobbing machine, is passed through
The opposite engaged transmission of the gear rolls out vertical with the width direction of the radiatinig corrugated simultaneously on the radiatinig corrugated
Half arc concave face, folded angular surface or concave face and folded angular surface and the recess cambered surface parallel with the width direction of the radiatinig corrugated.
3. a kind of heating device of PTC thermo-sensitive material, which is characterized in that contain heat sink strip described in the claims 1 or 2.
4. the heating device of PTC thermo-sensitive material according to claim 3, which is characterized in that the heating device includes PTC
Heater element, the principal component of the PTC heater element are Ba(1-x)PbxTiO3, the Ti are rutile TiO_2 raw ore through refining
It forms, the molar ratio of Ti is greater than 1.00% in the principal component.
5. the heating device of PTC thermo-sensitive material according to claim 3 or 4, which is characterized in that the heating device includes
PTC heater, the heater are the parallel connections between two strip electrode pieces penetrated in hollow heat-conducting aluminium pipe by insulating film cladding
After the heat generating core for having pasted PTC temperature-sensitive heater element, the thermal conductive surface of repressed aluminum pipe makes the intracorporal heat generating core of the fever and institute
The gap for stating aluminum pipe inner wall is eliminated, and the PTC heater of surface insulation is formed, and is bonded institute in the aluminum pipe heat-transfer surface of the heater
The PTC thermo-sensitive material heating device is formed after stating heat sink strip.
6. a kind of electric appliance, which is characterized in that the heater containing any PTC thermo-sensitive material described in the claims 3 ~ 5
Part.
7. electric appliance according to claim 6, the electric appliance is selected from air-conditioning, warm-air drier, hot air curtain device, super bath, dehumidifier, sky
One kind of gas purifier, dryer, automobile warm-air or demisting defroster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810950976.3A CN109275207A (en) | 2018-08-21 | 2018-08-21 | The heat sink strip and heating device and dedicated electric appliance of a kind of PTC thermo-sensitive material heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810950976.3A CN109275207A (en) | 2018-08-21 | 2018-08-21 | The heat sink strip and heating device and dedicated electric appliance of a kind of PTC thermo-sensitive material heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109275207A true CN109275207A (en) | 2019-01-25 |
Family
ID=65153683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810950976.3A Withdrawn CN109275207A (en) | 2018-08-21 | 2018-08-21 | The heat sink strip and heating device and dedicated electric appliance of a kind of PTC thermo-sensitive material heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109275207A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101089541A (en) * | 2006-06-13 | 2007-12-19 | 穆丹韩国有限会社 | Heat radiating fin of heat converter |
| CN202998522U (en) * | 2012-08-20 | 2013-06-12 | 广东美的制冷设备有限公司 | Chipping type ceramic PTC heater |
| CN104520664A (en) * | 2012-04-11 | 2015-04-15 | 贝洱两合公司 | Corrugated fin and method for producing it |
| CN106793193A (en) * | 2015-04-08 | 2017-05-31 | 蒋国屏 | A kind of thermal sensitive ceramics heating element |
| CN107056279A (en) * | 2017-03-23 | 2017-08-18 | 汕尾比亚迪实业有限公司 | Single donor doping positive temperature coefficient thermal sensitive ceramic and preparation method thereof |
-
2018
- 2018-08-21 CN CN201810950976.3A patent/CN109275207A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101089541A (en) * | 2006-06-13 | 2007-12-19 | 穆丹韩国有限会社 | Heat radiating fin of heat converter |
| CN104520664A (en) * | 2012-04-11 | 2015-04-15 | 贝洱两合公司 | Corrugated fin and method for producing it |
| CN202998522U (en) * | 2012-08-20 | 2013-06-12 | 广东美的制冷设备有限公司 | Chipping type ceramic PTC heater |
| CN106793193A (en) * | 2015-04-08 | 2017-05-31 | 蒋国屏 | A kind of thermal sensitive ceramics heating element |
| CN106851869A (en) * | 2015-04-08 | 2017-06-13 | 蒋国屏 | A kind of preparation technology of thermal sensitive ceramics heating element |
| CN107056279A (en) * | 2017-03-23 | 2017-08-18 | 汕尾比亚迪实业有限公司 | Single donor doping positive temperature coefficient thermal sensitive ceramic and preparation method thereof |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190125 |
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| WW01 | Invention patent application withdrawn after publication |