CN210928030U - PTC heater with corrosion-resistant heat dissipation aluminum strip - Google Patents
PTC heater with corrosion-resistant heat dissipation aluminum strip Download PDFInfo
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- CN210928030U CN210928030U CN201922005225.7U CN201922005225U CN210928030U CN 210928030 U CN210928030 U CN 210928030U CN 201922005225 U CN201922005225 U CN 201922005225U CN 210928030 U CN210928030 U CN 210928030U
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- heat dissipation
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- ptc heater
- aluminum
- aluminum strip
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Abstract
The utility model provides a PTC heater with corrosion-resistant heat dissipation aluminium strip, including heating core, aluminum pipe and heat dissipation aluminium strip, place in the heating core aluminum pipe inner chamber, heat dissipation aluminium strip set up in on the heat dissipation surface of aluminum pipe, the surface of heat dissipation aluminium strip has the passivation rete. The PTC heater product is applied to wind heaters of household air conditioners and the like, and heat is transferred to the environment through wind of a fan. The heat dissipation aluminum strip is processed by a passivation process to obtain a passivation film layer with corrosion resistance, and can withstand a severe continuous 168H salt spray corrosion test. The PTC heater made of the passivated heat dissipation aluminum strips can meet the requirements of salt spray experiments on the basis of meeting all electrical properties, and can provide odorless hot air for air-conditioning users to ensure the comfort and freshness of ambient air.
Description
Technical Field
The utility model relates to a PTC heater, concretely relates to PTC heater with corrosion-resistant heat dissipation aluminium strip.
Background
The household air conditioner air heater in the market at present widely uses PTC ceramics as a core heating element, and compared with the traditional electric heating wire and electric heating tube heaters, the PTC heater has the advantages of automatic temperature control, wide application voltage range, no open fire, safety, reliability, long service life and the like. The PTC heater can be arranged at an air outlet and used for assisting in heating ambient air, and a heat dissipation aluminum strip is bonded on a common PTC heater and used for improving the heat dissipation effect. The heat dissipation aluminum strips which circulate in the current market mainly comprise pure heat dissipation aluminum strips, anodic aluminum oxide strips and Teflon spray aluminum strips. The pure heat dissipation aluminum strip has poor corrosion resistance effect and cannot pass a severe salt spray experiment; for the anodic alumina strip, the oxide film layer on the surface is porous and is easy to absorb odor due to the process, so that the phenomenon of peculiar smell is caused when the product is used; for places where the sprayed Teflon aluminum strips are easy to have dew points and cannot be sprayed, particularly for corrugated sheet parts, the places where the Teflon aluminum strips are not sprayed are easy to corrode and produce white powder after the product is used for a long time, and the phenomenon of white powder blowing-out when the air conditioner is started is caused.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a PTC heater with a corrosion-resistant heat-dissipation aluminum strip.
In order to achieve the above object, the technical solution of the present invention is: a PTC heater with corrosion resistant heat dissipating aluminum strips, comprising:
the heating core body comprises a PTC ceramic element, electrode plates and an insulating layer, wherein the electrode plates are tightly attached to the surfaces of two electrodes of the PTC ceramic element, and the insulating layer is wrapped on the peripheries of the PTC ceramic element and the electrode plates;
the heating core is arranged in the inner cavity of the aluminum pipe;
and the heat dissipation aluminum strip is arranged on the heat dissipation surface of the aluminum pipe, and the surface of the heat dissipation aluminum strip is provided with a passivation film layer.
The utility model discloses PTC heater product is applied to wind heaters such as domestic air conditioner, penetrates the aluminum pipe that corresponds after PTC ceramic element and the electrode sheet parcel that electrically conducts used with the insulating layer in, then will heat the core and carry out the pressfitting operation with the aluminum pipe through compression fittings such as hydraulic press or rolling machine, then combine with passivation heat dissipation aluminium strip to make into the heater again. After the power is switched on, the heat generated by the PTC ceramic element is transmitted out through the electrode plate, the insulating layer, the aluminum pipe and the heat dissipation aluminum strip, and the ambient temperature is heated and increased. The heat dissipation aluminum strip is processed by a passivation process to obtain a passivation film layer with corrosion resistance, and can withstand a severe continuous 168H salt spray corrosion test. The PTC heater made of the passivated heat dissipation aluminum strips can meet the requirements of salt spray experiments on the basis of meeting all electrical properties, and can provide odorless hot air for air-conditioning users to ensure the comfort and freshness of ambient air.
Further, the thickness of the passivation film layer is 0.1-10 μm.
Further, the passivation film layer is a trivalent chromium passivation film.
By adopting the preferable scheme, the stable and reliable passivation film layer can be obtained by utilizing the passivation solution sold in the market and adopting a chemical passivation process.
Furthermore, the heat dissipation aluminum strip comprises an upper sheet and a middle corrugated sheet which are sequentially arranged from outside to inside.
Furthermore, the heat dissipation aluminum strip comprises an upper sheet, a middle corrugated sheet and a lower sheet which are sequentially arranged from outside to inside.
By adopting the preferable scheme, the strength and the stability of the product are improved.
Further, the surfaces of the upper sheet, the middle corrugated sheet and the lower sheet of the heat dissipation aluminum strip are provided with passivation film layers.
Further, the material of the heat dissipation aluminum strip is aluminum alloy Al 3003.
Further, the heat dissipation aluminum strip is connected with the surface of the aluminum pipe in a brazing mode.
By adopting the preferable scheme, the heat dissipation aluminum strip is directly welded on the aluminum tube, so that the thermal resistance can be reduced.
Further, the heat dissipation aluminum strip is adhered to the surface of the aluminum pipe in an adhesive manner.
Furthermore, the thickness of the middle corrugated sheet is 0.05-0.4mm, and the fin pitch of the middle corrugated sheet is 1-5 mm.
By adopting the preferable scheme, the thinner middle corrugated sheet reduces the cost and the weight of the heater; the reasonable fin pitch takes the heat dissipation area improvement and the wind resistance influence into consideration, so that the performance is optimal.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic top view of the structure of FIG. 1;
FIG. 3 is a schematic cross-sectional view of an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an embodiment of a heat-dissipating aluminum strip;
fig. 5 is a schematic structural diagram of another embodiment of the heat dissipation aluminum strip.
Names of corresponding parts represented by numerals and letters in the drawings:
1-a PTC ceramic element; 2-electrode slice; 3-an insulating layer; 4-an aluminum tube; 5-radiating aluminum strips; 50-a passivation film layer; 51-loading the slice; 52-middle corrugated sheet; 53-lower sheet.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 to 4, a PTC heater having a corrosion-resistant heat-dissipating aluminum strip, comprises:
the heating core body comprises a PTC ceramic element 1, an electrode plate 2 and an insulating layer 3, wherein the electrode plate 2 is tightly attached to the surfaces of two electrodes of the PTC ceramic element 1, and the insulating layer 3 is wrapped on the peripheries of the PTC ceramic element 1 and the electrode plate 2;
the heating core is arranged in the inner cavity of the aluminum tube 4;
and the heat dissipation aluminum strip 5 is arranged on the heat dissipation surface of the aluminum pipe 4, and the surface of the heat dissipation aluminum strip 5 is provided with a passivation film layer 50.
The beneficial effect of adopting above-mentioned technical scheme is: the PTC ceramic element and the electrode plate used for electric conduction are wrapped by the insulating layer and then penetrate into the corresponding aluminum pipe, then the heating core body and the aluminum pipe are pressed by a pressing device such as an oil press, a hydraulic press or a roller press, and then the heating core body and the aluminum pipe are combined with the passivated heat dissipation aluminum strip to manufacture the heater, and the heat is transferred to the environment through the air of the fan. The heat dissipation aluminum strip is processed by a passivation process to obtain a passivation film layer with corrosion resistance, and can withstand a severe continuous 168H salt spray corrosion test. The PTC heater made of the passivated heat dissipation aluminum strips can meet the requirements of salt spray experiments on the basis of meeting all electrical properties, and can provide odorless hot air for air-conditioning users to ensure the comfort and freshness of ambient air.
In other embodiments of the present invention, the thickness of the passivation film layer 50 is 0.1 to 10 μm. The passivation layer 50 is a trivalent chromium passivation film.
As shown in fig. 4, in other embodiments of the present invention, the heat dissipating aluminum strip 5 includes an upper plate 51, a middle corrugated plate 52 and a lower plate 53, which are sequentially arranged from outside to inside. The surfaces of the upper plate 51, the middle corrugated plate 52 and the lower plate 53 of the heat dissipating aluminum bar are provided with a passivation film layer. The heat dissipation aluminum strip is made of aluminum alloy AI 3003. The upper sheet 51, the middle corrugated sheet 52, and the lower sheet 53 may be integrally connected by a brazing process. The beneficial effect of adopting above-mentioned technical scheme is: the strength and stability of the product are improved.
As shown in fig. 5, in another embodiment of the present invention, the heat dissipating aluminum strip 5 includes an upper plate 51 and a middle corrugated plate 52, which are sequentially arranged from outside to inside.
In other embodiments of the present invention, the heat dissipation aluminum bar is connected to the surface of the aluminum pipe by brazing. The heat dissipation aluminum strip is directly welded on the aluminum pipe, so that the thermal resistance can be obviously reduced, and the power of the heater is improved.
In other embodiments of the present invention, the heat dissipation aluminum strip is adhered to the surface of the aluminum pipe by an adhesive method.
In other embodiments of the present invention, the thickness of the middle corrugated sheet is 0.05-0.4mm, and the fin pitch of the middle corrugated sheet is 1-5 mm. The beneficial effect of adopting above-mentioned technical scheme is: the thinner middle corrugated sheet reduces the cost and the weight of the heater; the reasonable fin pitch takes the heat dissipation area improvement and the wind resistance influence into consideration, so that the performance is optimal.
The above embodiments are only for illustrating the technical conception and the features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and the protection scope of the present invention can not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.
Claims (8)
1. A PTC heater with corrosion resistant heat dissipating aluminum strips, comprising:
the heating core body comprises a PTC ceramic element, electrode plates and an insulating layer, wherein the electrode plates are tightly attached to the surfaces of two electrodes of the PTC ceramic element, and the insulating layer is wrapped on the peripheries of the PTC ceramic element and the electrode plates;
the heating core is arranged in the inner cavity of the aluminum pipe;
and the heat dissipation aluminum strip is arranged on the heat dissipation surface of the aluminum pipe, and the surface of the heat dissipation aluminum strip is provided with a passivation film layer.
2. The PTC heater with the corrosion-resistant heat-dissipating aluminum strip according to claim 1, wherein the thickness of the passivation film layer is 0.1-10 μm.
3. The PTC heater with the corrosion-resistant heat-dissipating aluminum strip of claim 1, wherein the passivation film layer is a trivalent chromium passivation film.
4. The PTC heater with the corrosion-resistant heat dissipating aluminum strip according to claim 1, wherein the heat dissipating aluminum strip comprises an upper sheet and a middle corrugated sheet which are brazed and connected in sequence from outside to inside.
5. The PTC heater with the corrosion-resistant heat dissipating aluminum strip according to claim 1, wherein the heat dissipating aluminum strip comprises an upper sheet, a middle corrugated sheet and a lower sheet which are brazed and connected in sequence from outside to inside.
6. A PTC heater with corrosion-resistant heat dissipating aluminum strips according to claim 4 or 5, wherein the heat dissipating aluminum strips are made of Al 3003.
7. The PTC heater having the corrosion-resistant heat dissipating aluminum strips according to claim 6, wherein the heat dissipating aluminum strips are connected to the surface of the aluminum tube by brazing or are adhered to the surface of the aluminum tube by gluing.
8. The PTC heater with the corrosion-resistant heat-dissipating aluminum strip according to claim 7, wherein the thickness of the middle corrugated sheet is 0.05-0.4mm, and the pitch of the middle corrugated sheet is 1-5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922005225.7U CN210928030U (en) | 2019-11-19 | 2019-11-19 | PTC heater with corrosion-resistant heat dissipation aluminum strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922005225.7U CN210928030U (en) | 2019-11-19 | 2019-11-19 | PTC heater with corrosion-resistant heat dissipation aluminum strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210928030U true CN210928030U (en) | 2020-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922005225.7U Active CN210928030U (en) | 2019-11-19 | 2019-11-19 | PTC heater with corrosion-resistant heat dissipation aluminum strip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210928030U (en) |
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2019
- 2019-11-19 CN CN201922005225.7U patent/CN210928030U/en active Active
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