CN2208764Y - Honeycom type PTC electric heater and hot-air blowing machine - Google Patents
Honeycom type PTC electric heater and hot-air blowing machine Download PDFInfo
- Publication number
- CN2208764Y CN2208764Y CN 94242370 CN94242370U CN2208764Y CN 2208764 Y CN2208764 Y CN 2208764Y CN 94242370 CN94242370 CN 94242370 CN 94242370 U CN94242370 U CN 94242370U CN 2208764 Y CN2208764 Y CN 2208764Y
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- electric heating
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- heating element
- ptc electric
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Abstract
The utility model discloses an improved honeycomb type PTC electric heating body and an improved PTC electric heating hot air machine, which is characterized in that a honeycomb PTC electric heating piece isolated by electric insulation component is clamped and fixed by two metal mesh grid frames which are mutually corresponding. The utility model not only obviously improves heat resistance, but also increases heat transfer areas. The electric heating body of the hot air machine is provided with a honeycomb type electric heating body, and cold air is directly heated by honeycomb through holes. The utility model has good heat conductivity and high heat efficiency.
Description
Utility model relates to a kind of positive temperature coefficient electric heating element, especially a kind of cellular positive temperature coefficient electric heating element, and the warm-air drier of forming with this electric heating element.
Chinese patent 90203064.7 discloses the cellular PTC electric heating element of a kind of raising heating efficiency, increase the structure design of heat transfer area and then increase coefficient of heat transfer, it is to sacrifice PTC electric heating piece piece number, and replace with the heat radiation frame net of alternate setting, count the electric heating element of PTC combination for same piece, seemingly increased heat transfer area, but, then reduced electric heating element power for identical area of dissipation.Therefore on identical heat radiation power and identical area of dissipation meaning, this structure does not really increase heat transfer area.The cellular electric heating element of next this patent disclosure, the framework of fixing cellular PTC electric heating piece adopts heat-resisting plastic frame, for improving the intensity of plastic frame, framework must be done thickly and clumsy, so not only electric heating element is bulky, and the heatproof effect is not really desirable, for some large power, electrically hot bodys, this framework just seems and proves definitely inferior, and lacks enough thermal structure intensity.Thereby want the little and high-power warm-air drier series products of cube, still adopt the bonding PTC of the corrugated heat sink strip of aluminium as heater element, as Chinese patent 92237229.3 disclosed warm-air driers, the PTC electric heating element then adopts flat PTC electric heating piece both sides to be equipped with corrugated aluminium heat sink strip composition, and cold wind passes through each ripple of corrugated heat sink strip and indirect.This by PTC heating heat sink strip, by the warm-air drier of heat sink strip indirect cold air, the heat efficiency is low again, and owing to adopt conductive adhesive between PTC electric heating piece and heat sink strip, cold shrinkage and thermal expansion and conducting resinl are aging for a long time, and inter-module closely contact can become loose, causes loose contact, produce arcing, influence thermal power and useful life, this electric heating element damages if any one or a few PTC electric heating piece, can not change separately, can cause power attenuation, cause a whole set of electric heating element to be scrapped.In addition, general warm-air drier does not have damping device, makes the people produce dry sensation easily, and temperature adjustment can only be reduced, and can not raise, and ornamental difference or the like, still unsatisfactory, still having is worth improved place.
The purpose of utility model is to overcome the deficiency of above-mentioned existing cellular electric heating element, and providing a kind of can really increase the heat radiation conduction surface, improve electric heating element heating energy, and volume is little, and heat structure intensity height can be made more powerful cellular PTC electric heating element.
Another purpose of utility model is to overcome the deficiency of above-mentioned warm-air drier, provides the above-mentioned cellular electric heating element of a kind of use to make thermal source, and heat efficiency height is not fragile, but and monolithic change the novel warm-air machine of PTC electric heating piece.
Utility model first purpose realizes, the main improvement is to adopt the metal grill framework not only to make the electrode plate but also the framework that fixes.Its electric heating element comprises several cellular PTC electric heating pieces, it is characterized in that described cellular PTC electric heating piece is positioned framework frame mouth by two mutually corresponding metal grill framework clampings, the clamping that is mutually locked under electrical insulation is isolated of metal grill framework.The heat energy that produces of PTC electric heating piece is directly dispersed the cold air of heating by honeycomb on the one hand like this, and the electric heating piece heat also can conduct to grid framework and outwards disperse in addition, significantly like this increases heated conduction surface.Metal grill frame strength height can bear higher temperature in addition, has not only dwindled volume, and can be made into the large power, electrically hot body.
For each PTC and framework combination of electrodes are remained closely, and reduction is to the making requirement of framework evenness, do not make each PTC electric heating piece because of being generated heat and expanding with heat and contract with cold of stopping influences to produce in conjunction with getting loose defective, can being provided with between metal grill framework and PTC electric heating piece and make each PTC and metal grill framework make up elastic conduction mesh flake more closely.This elastic conduction mesh flake can be that grid rib limit is bent inwards; Also can be that the mesh flake rib is bent into bending wave shape wave up and down, make whole conductive grid have elastic effect.The elastic conduction grid also can be combined by the elasticity rib, though can increase the assembling difficulty like this, realizes that effect is suitable.
The utility model warm-air drier, form by casing and interior fan and positive temperature coefficient electric heating element thereof, it is characterized in that described electric heating element, comprise several cellular PTC electric heating pieces, each PTC electric heating piece is positioned framework frame mouth by two mutually corresponding metal grill framework clampings, the clamping that is mutually locked under electrical insulation is isolated of metal grill framework.
The adjusting of warm-air drier heating-up temperature, except that adopting general the change the power method, a kind of better mode adopts the change rotation speed of the fan, promptly wind (air) flow of regulating by cellular electric heating element regulates the room temperature, the fan electromotor speed regulating device can directly adopt buncher or adopt known various alignment circuit, no specificity.
Be to increase the heating indoor air humidity, the utility model warm-air drier also can increase a steam damping device, makes be heated vaporization or excite atomizing to become steam or aerosol distributes of water with Electric heating or ionization mode, increases the heating indoor humidity.The steam damping device is excellent with Electric heating especially, and one is simple, and two also can improve temperature, and heater is excellent with the PTC electric heating piece with heated at constant temperature characteristic especially then.
Exemplify two preferred embodiments below, in conjunction with the accompanying drawings utility model be elaborated:
Fig. 1 is the cellular PTC electric heating element of a utility model embodiment structure decomposition map.
Fig. 2 is a utility model embodiment warm-air drier master TV structure schematic diagram.
Fig. 3 is the right TV structure schematic diagram of Fig. 2.
Fig. 4 is an embodiment electric heating steam humidification apparatus structure schematic diagram.
Fig. 5 is embodiment music sounding electric circuit figure.
Embodiment 2: referring to Fig. 2,3,4,5, have hot air outlet passage 2 in houselet casing 1 front, its outside is covered with silk screen plate 3, and periphery has ornamental festoon lamp 12, and the one side has electric heating vaporization damping device 4.Air outlet passage 2 inboards are just like embodiment 1 described cellular electric heating element 5, and there is centrifugal fan 6 the electric heating element back upper place, and cold wind is by guide duct 7 outwards heat supply after the electric heating element heating.Electric heating vaporization damping device (Fig. 4) is made up of water tank 8 and the generating tube 9 that is communicated with it and the PTC electric heating piece 10 that is close on the generating tube, and level displaying device 11 on the water tank 8, store water level with demonstration.The alignment circuit (not providing among the figure) that the control motor speed is arranged in the fan electromotor circuit is to change the fan wind supply quantity.Also be provided with the start and close music device of ringing in the warm-air drier, the music device of ringing then can be various universal musical circuit, a kind of typical music circuit such as Fig. 5, the triggering signal that start and close produces is applied to trigger electrode A, promptly send one regularly music ring.
The cellular PTC electric heating element of utility model owing to adopt the metal grill framework to make PTC electric heating piece pin fitting, is aided with the electrical insulation electricity again and isolates each PTC assembly interlocking combining structure.Make the metal grill framework not only become interlocking PTC assembly, and be again electrode and thermal conductor simultaneously, than prior art under equal area and power, significantly increased heat transfer area, coefficient of heat transfer is increased, and then improve the radiated energy of PTC, the metal framework heat resistance is good in addition.It has overcome, and the prior art calorific intensity is not high enough, and volume is clumsy, and heat transfer area is little, the shortcoming that the heat efficiency can not be given full play to.With the warm-air drier of this assembling, not only heats is good, and cold wind directly heats by the honeycomb through hole, and heat conductivity is good, heat efficiency height, but and monolithic replacing again after the damage of PTC electric heating piece.Two kinds of temperature adjustment controls of power and air quantity have significantly improved temperature adjustment width and effect.The electric heating constant temperature humidification, ornamental festoon lamp and start and close music are rung, and have more increased warm-air drier function and decorative effect.
Claims (10)
1, a kind of cellular positive temperature coefficient (PTC) electric heating element, comprise several cellular PTC electric heating pieces, it is characterized in that described cellular PTC electric heating piece is positioned framework frame mouth by two mutually corresponding metal grill framework clampings, the clamping that under electrical insulation is isolated, is mutually locked of metal grill framework.
2, according to the described cellular PTC electric heating element of claim 1, it is characterized in that being provided with between metal grill framework and PTC electric heating piece and make each PTC and metal framework combination elastic conduction mesh flake more closely, each frame mouth of described conductive grid sheet is all mutual corresponding with framework frame mouth.
3, according to claim 1 or 2 described cellular PTC electric heating elements, it is characterized in that described electrical insulation is the hollow porcelain tube.
4, a kind of positive temperature coefficient (PTC) electric fan heater, form by casing and casing internal fan and positive temperature coefficient electric heating element, it is characterized in that described electric heating element comprises several cellular PTC electric heating pieces, each PTC electric heating piece is positioned framework frame mouth by two mutually corresponding metal grill framework clampings, the clamping that is mutually locked under electrical insulation is isolated of metal grill framework.
5,, it is characterized in that also having a steam damping device in the described warm-air drier according to the described electric fan heater of claim 4.
6, according to the described electric fan heater of claim 5, it is characterized in that described steam damping device is an electric evaporator, the heating element of its electric heater is the PTC electric heating piece.
7,, it is characterized in that having on the described fan electromotor speed regulating device that can change motor speed according to claim 4,5 or 6 described electric fan heaters.
8,, it is characterized in that described fan is a centrifugal fan according to the described electric fan heater of claim 7.
9, described according to Claim 8 electric fan heater is characterized in that having in the described warm-air drier on/off music device of ringing.
10,, it is characterized in that described warm-air drier tank surface has ornamental festoon lamp according to the described electric fan heater of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94242370 CN2208764Y (en) | 1994-08-02 | 1994-08-02 | Honeycom type PTC electric heater and hot-air blowing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94242370 CN2208764Y (en) | 1994-08-02 | 1994-08-02 | Honeycom type PTC electric heater and hot-air blowing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2208764Y true CN2208764Y (en) | 1995-09-27 |
Family
ID=33848975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94242370 Expired - Fee Related CN2208764Y (en) | 1994-08-02 | 1994-08-02 | Honeycom type PTC electric heater and hot-air blowing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2208764Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107048462A (en) * | 2017-06-15 | 2017-08-18 | 湖北鹤峰金倡工贸有限公司 | The bleed type Tobacco leaf roasting room heated using electroceramics |
| CN107080005A (en) * | 2017-06-15 | 2017-08-22 | 湖北鹤峰金倡工贸有限公司 | The high hot blast tea drum fixation machine heated with electroceramics |
| CN111089424A (en) * | 2018-10-23 | 2020-05-01 | 东翰生技股份有限公司 | Heating device and heating sheet fixing frame thereof |
-
1994
- 1994-08-02 CN CN 94242370 patent/CN2208764Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107048462A (en) * | 2017-06-15 | 2017-08-18 | 湖北鹤峰金倡工贸有限公司 | The bleed type Tobacco leaf roasting room heated using electroceramics |
| CN107080005A (en) * | 2017-06-15 | 2017-08-22 | 湖北鹤峰金倡工贸有限公司 | The high hot blast tea drum fixation machine heated with electroceramics |
| CN107048462B (en) * | 2017-06-15 | 2019-09-27 | 湖北鹤峰金倡工贸有限公司 | The bleed type Tobacco leaf roasting room heated using electroceramics |
| CN111089424A (en) * | 2018-10-23 | 2020-05-01 | 东翰生技股份有限公司 | Heating device and heating sheet fixing frame thereof |
| CN111089424B (en) * | 2018-10-23 | 2021-04-16 | 东翰生技股份有限公司 | Heating device and heating sheet fixing frame thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |