CN216122930U - Brazing integrated pipe for corrugated sheet type PTC heater - Google Patents
Brazing integrated pipe for corrugated sheet type PTC heater Download PDFInfo
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- CN216122930U CN216122930U CN202122108019.6U CN202122108019U CN216122930U CN 216122930 U CN216122930 U CN 216122930U CN 202122108019 U CN202122108019 U CN 202122108019U CN 216122930 U CN216122930 U CN 216122930U
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Abstract
The utility model discloses a brazing integrated pipe for a corrugated sheet type PTC heater, which comprises: the aluminum pipe, set up in the corrugated sheet of two heat dissipation surfaces of aluminum pipe and set up the aluminum plate in the corrugated sheet outside, the aluminum pipe inner chamber is used for installing the heating core, and the upper and lower surface of corrugated sheet is all attached with metal welding thin slice. The utility model adopts the design of additionally arranging the metal welding sheet on the surface of the corrugated sheet, in the brazing process, the metal welding sheet is melted to form a welding flux, the corrugated sheet and the aluminum pipe are welded together, and the corrugated sheet and the aluminum plate are welded together.
Description
Technical Field
The utility model relates to a heater, in particular to a brazing integrated pipe for a corrugated sheet type PTC heater.
Background
PTC heaters are commonly used in heating devices in the field of home appliances, such as air-conditioning auxiliary heating, fan heaters, bath heaters, and the like. The PTC ceramic is used as a core heating element, has a positive temperature coefficient thermal sensitive effect, can automatically control the temperature, has a wide range of application voltage, is free from open fire, is safe and reliable, and has a long service life. In the existing corrugated sheet type PTC heater, an aluminum pipe and a heat dissipation aluminum strip are bonded by silica gel and are heated and cured by electrifying. The heat dissipation aluminium strip includes in proper order: the aluminum plate comprises an outer aluminum plate, a first welding piece, a corrugated piece, a second welding piece and an inner aluminum plate.
This processing method has the following five disadvantages:
1) the use of silica gel causes environmental pollution;
2) the electrifying and curing time is long, the processing cost is high, and the energy waste is caused;
3) the silica gel layer is accelerated to age due to continuous high temperature in the using process, and the heat conduction capability is poor, so that the performance of the PTC heater is reduced;
4) the traditional heat dissipation aluminum strip structure needs to be formed by fixing an inner layer aluminum plate and an outer layer aluminum plate, and the use cost of raw materials is high.
5) The welding lug is adopted to realize the welding of the inside of the heat dissipation aluminum bar, the assembly is complex, and the process difficulty coefficient is large.
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problems, the present invention proposes a brazed integral tube for a corrugated sheet type PTC heater.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
a brazed integral tube for a corrugated fin PTC heater comprising: the aluminum pipe, set up in the corrugated sheet of two heat dissipation surfaces of aluminum pipe and set up the aluminum plate in the corrugated sheet outside, the aluminum pipe inner chamber is used for installing the heating core, and the upper and lower surface of corrugated sheet is all attached with metal welding thin slice.
The utility model relates to a brazing integrated pipe for a corrugated sheet type PTC heater, which has a structure before brazing, because a metal welding sheet is attached to the surface of a corrugated sheet, the metal welding sheet is melted in the brazing process to form a welding flux, the corrugated sheet and an aluminum pipe are welded together, and the corrugated sheet and the aluminum plate are welded together.
The brazing integrated pipe for the corrugated sheet type PTC heater does not need to be further provided with a welding sheet, is simple to assemble and has a good welding effect.
On the basis of the technical scheme, the following improvements can be made:
preferably, the width of the aluminum pipe is greater than the width of the corrugated sheet, and the width of the aluminum pipe is greater than the width of the aluminum plate.
Adopt above-mentioned preferred scheme, after brazing the completion, penetrate the integrative pipe of brazing when the heating core, adopt to press a tub device to exert pressure and closely laminate heating core and aluminum pipe, the width of aluminum pipe is greater than the width of corrugated sheet, and is greater than aluminum plate's width, is more convenient for press a tub device to realize the operation of exerting pressure.
Preferably, the length of the aluminum pipe is greater than that of the corrugated sheets, one end of the aluminum pipe extends out of the plane of one end of the corrugated sheets arranged correspondingly, and the distance between one end of the aluminum pipe and one end of the corrugated sheets arranged correspondingly is 17-25 mm.
By adopting the preferable scheme, the head end and the tail end of the aluminum pipe respectively extend out for a distance, so that the head end and the tail end of the aluminum pipe are convenient to assemble.
Preferably, the height of the aluminium tube is between 6 and 7mm and the width of the aluminium tube is between 19 and 20 mm.
By adopting the preferable scheme, the size is proper, and the manufactured corrugated sheet type PTC heater meets the specification.
Preferably, the wall thickness of the aluminium tube is not less than 0.75 mm.
By adopting the preferable scheme, the aluminum pipe has good strength, and the manufactured corrugated sheet type PTC heater meets the specification.
Preferably, after brazing, the height of the inner cavity of the aluminum pipe is not less than 3.8 mm.
By adopting the preferable scheme, the height of the inner cavity of the aluminum pipe is not less than 3.8mm, so that the heating core body can be conveniently installed after brazing.
Preferably, the pitch of the corrugated sheet is between 2.0 and 3.5mm, and the height of the corrugated sheet is between 9 and 10 mm.
By adopting the preferable scheme, the reasonable fin pitch takes the lifting of the heat dissipation area and the influence of wind resistance into consideration, so that the performance is optimal.
Preferably, the width of the aluminum plate is between 14 and 15 mm.
By adopting the preferable scheme, the heat dissipation area is reasonable.
Preferably, the thickness of the aluminum plate is between 0.5 and 1.0 mm.
By adopting the preferable scheme, the aluminum plate is proper in thickness, good in mechanical strength and good in heat dissipation effect.
Preferably, the aluminum pipe is made of aluminum alloy Al6063, and the corrugated sheets and the aluminum plate are made of aluminum alloy Al 3003.
Adopt above-mentioned preferred scheme, can guarantee the weldability of corrugated sheet and aluminum plate, aluminum pipe, improve the intensity and the stability of product.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a front view of a brazed integrated pipe according to an embodiment of the present invention.
Fig. 2 is a top view of a brazed integrated tube according to an embodiment of the present invention.
Figure 3 is a side view of an aluminum pipe provided by an embodiment of the present invention.
Wherein: 1-aluminum tube, 2-corrugated sheet and 3-aluminum plate.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The expression "comprising" an element is an "open" expression which merely means that there are corresponding parts, which should not be interpreted as excluding additional parts.
To achieve the objects of the present invention, in some embodiments of a brazed integral tube for a corrugated sheet PTC heater, as shown in fig. 1-2, the brazed integral tube comprises: the aluminum tube comprises an aluminum tube 1, corrugated sheets 2 arranged on two heat dissipation surfaces of the aluminum tube 1 and an aluminum plate 3 arranged on the outer sides of the corrugated sheets 2, wherein a heating core body (not shown in the figure) is arranged in an inner cavity of the aluminum tube 1, and metal welding thin sheets (not shown in the figure) are attached to the upper surface and the lower surface of each corrugated sheet 2.
In some embodiments, the heating core body comprises a PTC ceramic element, electrode plates and an insulating layer, wherein the PTC ceramic element is flat, the electrode plates are tightly attached to the surfaces of two electrodes of the PTC ceramic element, and the insulating layer wraps the peripheries of the PTC ceramic element and the electrode plates.
A brazing integrated pipe for a corrugated sheet type PTC heater of the present invention is in a structure before brazing, since a metal welding foil is attached to the surface of a corrugated sheet 2, the metal welding foil is melted during brazing and flows to the peaks and valleys of the corrugated sheet 2 to form a flux, the corrugated sheet 2 and an aluminum pipe 1 are welded together, and the corrugated sheet 2 and an aluminum plate 3 are welded together.
Wherein: the melting point of the metallic welding foil is lower than that of the corrugated sheet 2, lower than that of the aluminum pipe 1 and lower than that of the aluminum plate 3.
The brazing integrated pipe for the corrugated sheet type PTC heater does not need to be further provided with a welding sheet, is simple to assemble and has a good welding effect.
Compared with the traditional corrugated sheet type PTC heater, the PTC heater prepared by the utility model has the following beneficial effects:
1) the corrugated sheet 2 and the surface of the aluminum pipe 1 are directly welded, so that the use of a relay aluminum plate is saved, the cost of raw materials is reduced, and the weight of the product is reduced to a certain extent.
2) The aluminum pipe 1 and the corrugated sheet 2 and the aluminum plate 3 are combined by adopting a brazing process, so that the PTC heater is more firm and stable, is not easy to age, and effectively solves the problem of power attenuation after the PTC heater works for a long time.
3) The corrugated sheet 2 attached with the metal welding sheet is directly adopted, so that the mounting steps of the welding sheet are saved, the production flow of the product is simplified, and the production cycle of the product is accelerated.
In order to further optimize the working effect of the present invention, in other embodiments, the remaining characteristic techniques are the same, except that the width of the aluminum pipe 1 is larger than the width of the corrugated sheet 2, and the width of the aluminum pipe 1 is larger than the width of the aluminum plate 3.
Adopt above-mentioned preferred scheme, after brazing the completion, penetrate the integrative pipe of brazing when the heating core, adopt to press a tub device to exert pressure and closely laminate heating core and aluminum pipe, the width of aluminum pipe is greater than the width of corrugated sheet, and is greater than aluminum plate's width, is more convenient for press a tub device to realize the operation of exerting pressure.
In order to further optimize the implementation effect of the utility model, in other embodiments, the rest of the characteristic techniques are the same, except that the length of the aluminum pipe 1 is greater than that of the corrugated sheets 2, one end of the aluminum pipe 1 extends out of the plane of one end of the corrugated sheets 2 arranged correspondingly, and the distance between one end of the aluminum pipe 1 and one end of the corrugated sheets 2 arranged correspondingly is 17-25 mm.
By adopting the preferable scheme, the head end and the tail end of the aluminum pipe 1 respectively extend out for a distance, so that the head and tail support can be conveniently assembled.
In some embodiments, as shown in figure 1, the length L1 of the aluminium tube 1 is 567 mm.
In some embodiments, as shown in FIG. 1, one end of the aluminum pipe 1 is 25mm in length Δ L1 from one end of the corrugated sheet 2 disposed in correspondence therewith, and the opposite end of the aluminum pipe 1 is 17mm in length Δ L2 from the other end of the corrugated sheet 2.
In order to further optimize the implementation effect of the utility model, in other embodiments, the rest characteristics are the same, except that the height of the aluminum pipe 1 is between 6 and 7mm, and the width of the aluminum pipe 1 is between 19 and 20 mm.
With the preferred scheme, the size is proper, and the manufactured corrugated sheet 2 type PTC heater meets the specification.
In some embodiments, as shown in figure 1, the aluminium tube 1 has a height H1 of 6.4 mm.
In some embodiments, as shown in figure 2, the aluminium tube 1 has a width W1 of 19 mm.
In order to further optimise the performance of the utility model, in other embodiments the remaining features are the same except that the wall thickness of the aluminium tube 1 is not less than 0.75 mm.
By adopting the preferable scheme, the aluminum pipe has good strength, and the manufactured corrugated sheet type PTC heater meets the specification.
As shown in figure 1, the sum of the upper wall thickness and the lower wall thickness of the aluminium tube 1 is not less than 1.5 mm.
In order to further optimize the working effect of the utility model, in other embodiments, the remaining features are the same, except that the height of the inner cavity of the aluminum pipe 1 after brazing is not less than 3.8 mm.
Further, the height of the inner cavity of the aluminum pipe 1 is not less than 4 mm.
In some embodiments, as shown in figure 3, the height h1 of the lumen of the aluminium tube 1 is 4.3 mm.
By adopting the preferable scheme, the height of the inner cavity of the aluminum pipe 1 is not less than 3.8mm, so that the heating core body can be conveniently installed after brazing.
In order to further optimize the working effect of the utility model, in other embodiments, the remaining features are the same, except that the pitch of the corrugated sheet 2 is between 2.0 and 3.5mm and the height of the corrugated sheet 2 is between 9 and 10 mm.
By adopting the preferable scheme, the reasonable fin pitch takes the lifting of the heat dissipation area and the influence of wind resistance into consideration, so that the performance is optimal.
In some embodiments, as shown in fig. 1, the corrugated sheet 2 has a fin pitch Δ x of 3.0 mm; the height H2 of the corrugated sheet 2 was 9.2 mm.
In order to further optimize the working effect of the utility model, in other embodiments the remaining features are the same, except that the width of the aluminium plate 3 is between 14 and 15 mm.
By adopting the preferable scheme, the heat dissipation area is reasonable.
In some embodiments, as shown in FIG. 2, the width W3 of aluminum sheet 3 is 14.4 mm.
Wherein it is noted that the width of the corrugated sheet 2 is not greater than the width of the aluminum sheet 3.
In order to further optimize the working effect of the utility model, in other embodiments, the remaining features are the same, except that the thickness of the aluminium plate 3 is between 0.5 and 1.0 mm.
By adopting the preferable scheme, the aluminum plate is proper in thickness, good in mechanical strength and good in heat dissipation effect.
In some embodiments, as shown in FIG. 2, the aluminum sheet 3 has a thickness (i.e., height) H3 of 0.5 mm.
In order to further optimize the implementation effect of the utility model, in other embodiments, the rest features are the same, except that the aluminum pipe 1 is made of aluminum alloy Al6063, and the corrugated sheets 2 and the aluminum plate 3 are made of aluminum alloy Al 3003.
By adopting the preferable scheme, the weldability of the corrugated sheet 2, the aluminum plate 3 and the aluminum pipe 1 can be ensured, and the strength and the stability of the product are improved.
The various embodiments above may be implemented in cross-parallel.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the scope of the present invention.
Claims (10)
1. A brazed integral tube for a corrugated fin PTC heater comprising: the aluminum tube, set up in the corrugated sheet of two heat dissipation surfaces of aluminum tube and set up in the aluminum plate of corrugated sheet outside, the aluminum tube inner chamber is used for installing the heating core, its characterized in that, the upper and lower surface of corrugated sheet all attaches the metal welding thin slice.
2. The brazed integral tube of claim 1, wherein the aluminum tube has a width greater than a width of the corrugated sheets and the aluminum tube has a width greater than a width of the aluminum plate.
3. The brazed integral tube of claim 1, wherein the aluminum tube has a length greater than that of the corrugated sheets, one end of the aluminum tube extends out of a plane of an end of the corrugated sheets disposed correspondingly thereto, and the length of the one end of the aluminum tube is between 17 and 25mm from the end of the corrugated sheets disposed correspondingly thereto.
4. A brazed integral pipe according to any one of claims 1 to 3, wherein the aluminium pipe has a height of between 6 and 7mm and a width of between 19 and 20 mm.
5. A brazed integral tube according to any one of claims 1 to 3, wherein the aluminum tube has a wall thickness of not less than 0.75 mm.
6. A brazed integral tube according to any one of claims 1 to 3, wherein the height of the inner cavity of the aluminum tube after brazing is not less than 3.8 mm.
7. A brazed integral tube according to any one of claims 1 to 3, wherein the pitch of the corrugated sheets is between 2.0 and 3.5mm and the height of the corrugated sheets is between 9 and 10 mm.
8. A brazed integral tube according to any one of claims 1 to 3, wherein the aluminium sheet has a width of between 14 and 15 mm.
9. A brazed integral tube according to any one of claims 1 to 3, wherein the thickness of the aluminum plate is between 0.5 and 1.0 mm.
10. A brazed integral tube according to any one of claims 1 to 3, wherein the aluminium tube is of aluminium alloy Al6063 and the corrugated sheets and aluminium sheet are of aluminium alloy Al 3003.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122108019.6U CN216122930U (en) | 2021-09-02 | 2021-09-02 | Brazing integrated pipe for corrugated sheet type PTC heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122108019.6U CN216122930U (en) | 2021-09-02 | 2021-09-02 | Brazing integrated pipe for corrugated sheet type PTC heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216122930U true CN216122930U (en) | 2022-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122108019.6U Active CN216122930U (en) | 2021-09-02 | 2021-09-02 | Brazing integrated pipe for corrugated sheet type PTC heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216122930U (en) |
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2021
- 2021-09-02 CN CN202122108019.6U patent/CN216122930U/en active Active
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