CN103096535A - Polymeric positive temperature coefficient (PTC) electric heater with flangings fixed with heat dissipation strips in clamping mode - Google Patents
Polymeric positive temperature coefficient (PTC) electric heater with flangings fixed with heat dissipation strips in clamping mode Download PDFInfo
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- CN103096535A CN103096535A CN201210009104XA CN201210009104A CN103096535A CN 103096535 A CN103096535 A CN 103096535A CN 201210009104X A CN201210009104X A CN 201210009104XA CN 201210009104 A CN201210009104 A CN 201210009104A CN 103096535 A CN103096535 A CN 103096535A
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Abstract
The invention relates to the technical field of heaters, in particular to a heater. A polymeric positive temperature coefficient (PTC) electric heater with flangings fixed with heat dissipation strips in a clamping mode comprises a heater pipe, wherein a PTC heating element is arranged in the heater pipe, the heater pipe is connected with heat dissipation metal strips, a long-strip-shaped metal tube body is adopted by the heater pipe, flangings are arranged on two sides of the upper portion and a lower portion of the long-strip-shaped metal tube body along the length direction, a plural number of heat dissipation protrusions which are formed in an upward protruding mode are sequentially arranged on each heat dissipation metal strip from one end to the other end along the length direction of the long-strip-shaped metal tube body. According to the PTC electric heater with the flangings fixed with the heat dissipation strips in the clamping mode, fixation between the heater pipe and the heat dissipation metal strips is firm, the problem of being loose caused by mucilage glue ageing is avoided, and usage time is long. In addition, the heat dissipation metal strips adopted by the PTC electric heater with the flangings fixed with the heat dissipation strips in the clamping mode are large in heat dissipation area and rapid in heating speed.
Description
Technical field
The present invention relates to the heater technical field, be specifically related to a kind of heater.
Background technology
The PTC electric heater because its room temperature resistance is low, has been easy to processing and low price since coming out, be widely used.The PTC electric heater has been widely used in the fields such as air conditioner, warm-air drier, dryer, dehumidifier, air conditioning for automobiles, liquid heater, heater of hair straightener, curler, coffee pot at present.
Heater tube and fin connected mode in existing PTC electric heater normally adopt gluing mode.Adopt gluing mode not only can produce glue flavor or a small amount of organic gas in heater heating process, also may make fin and heater tube produce loosening after long-time the use, reduce the useful life of heater.
Summary of the invention
The object of the invention is to, the PTC electric heater that provides a kind of flange to connect and fix heat sink strip is to solve the problems of the technologies described above.
Technical problem solved by the invention can realize by the following technical solutions:
Flange connects and fixes the PTC electric heater of heat sink strip, comprise heater tube, be provided with the PTC heater element in described heater tube, be connected with the heat radiating metal bar on described heater tube, it is characterized in that, described heater tube adopts a strip metal tube, and the top of described strip metal tube, bottom both sides along its length are respectively equipped with flange;
Length direction along described strip metal tube on described heat radiating metal bar is placed with to the other end heat radiation projection that a plurality of upwards protuberances form from an end successively, forms a plurality of fan shape structures in the side of described strip metal tube;
Described heat radiating metal bar bottom is provided with base, and described base broad ways both sides of the edge are respectively equipped with edge;
Described flange blocks described edge, and clamping is connected described heat radiating metal bar with flange by edge with described heater tube.
During use, the heat radiating metal bar is placed on respectively top, the bottom of strip metal tube, then with the flange bending, is fixedly connected with edge by flange, the heat radiating metal bar is stuck on heater tube.With respect to gluing mode, avoided producing the problem of glue flavor, reduced chemical contamination, environmental protection has more been avoided simultaneously because of the loosening problem of the aging rear generation of glue, and service time is longer.
Described heat radiation projection comprises two sides, an end face, and the upper width of described side is greater than lower width;
The end face of described heat radiation projection is provided with at least one heat radiation through hole.In order to better dispel the heat.
The width of the bottom of described side broadens gradually to top.
Described heat radiating metal strip adoption one strip sheet metal, described strip sheet metal upwards bending are bent to form described heat radiation projection downwards;
The width of the bossing of described heat radiation projection is less than the protruding bottom width of described heat radiation;
Be arranged in described base bottom at least two described heat radiation projections.Adopt a strip sheet metal just can be converted into a plurality of heat radiation projections in manufacture process, form the heat radiating metal bar.In addition, less than bottom width, the upper width of the side of heat radiation projection is greater than lower width due to the width of the bossing of heat radiation projection, therefore during fabrication, should carry out cutting to the metal of the projection of dispelling the heat, to reduce width.
Described strip sheet metal between one described heat radiation projection heat radiation projection adjacent with another is partly the connection metal sheet, and the width of described connection metal sheet is greater than the width of described heat radiation projection bottom, and at least two described connection metal sheets are arranged in described base.In manufacture process, can be before the described heat radiating metal bar of bending, the part edge that first will be bent into the heat radiation projection carries out cutting, to reduce width.So that make the width of described base greater than the width of described heat radiation projection.
The top of described strip metal tube, bottom are respectively equipped with described heat radiating metal bar, the top edge of the heat radiation projection of described strip metal tube top heat radiating metal bar is 15-30 ± 0.5mm to the distance of the lower limb of the heat radiation projection of described strip metal tube bottom heat radiating metal bar, preferred 24mm.
The width of described strip metal tube is greater than the width of described heat radiation projection, and the width of described strip metal tube is 12-20 ± 0.2mm, preferred 18mm.
The width of described heat radiation projection is 12-20 ± 0.5mm, preferred 15mm.
The height of described heat radiation projection is 5-15 ± 0.5mm, preferred 9.5mm.
On described strip metal tube, the distance of two adjacent described heat radiation projections is 2-5 ± 0.5mm, preferred 3mm.
Preferably be provided with three described heat radiation through holes on described heat radiation projection, three described heat radiation through holes are arranged along the Width of described heat radiation projection successively, and the distance between two described heat radiation through holes of being separated by is 2-7 ± 0.2mm, preferred 5mm.
The two ends of described heater tube are respectively equipped with an opening, and a described opening connects binding post, and another described opening part is provided with sealing plug.
The heat radiating metal bar that described heat radiating metal strip adoption aluminum is made.The heat radiating metal bar of aluminum has good heat conductivility, oxidative resistance, so that improve the thermal diffusivity of described heat radiating metal bar, and the useful life that increases the heat radiating metal bar.
The thickness of the strip sheet metal of described heat radiating metal strip adoption is the 0.1-0.4mm left and right.
Described PTC heater element can adopt the metal PTC heater element, also can adopt the ceramic PTC heater element.
Described PTC heater element can also adopt Tao Jin mixed type PTC fast electric heating element, Tao Jin mixed type PTC fast electric heating element comprises a heat generating components, described heat generating components is connected with two electrodes, and described heat generating components comprises heating ceramic sheet and metal PTC heater strip or band;
One described electrode connects heating ceramic sheet one end, and the other end of described heating ceramic sheet connects described metal PTC heater strip or is with an end by conductor, and described metal PTC heater strip or the band other end connect another described electrode.
The present invention is after electric current flows into an electrode place, and through the heating ceramic sheet, then by conductor, flow through metal PTC heater strip or band flow to another electrode at last, complete whole loop.The heating ceramic sheet that adopts in traditional ceramic PTC electric heater has advantages of current limitation and limiting temperature, can play to the current temperature of electric heater the self feed back effect.The metal PTC heater strip of metal PTC electric heater or band have the advantages such as stable performance, efficient height, life-span length.In addition, arbitrarily crooked, the moulding of heating part by metal PTC heater strip or band consist of can better adapt to installation environment.
By above-mentioned design, ceramic PTC electric heater heat generating components and metal PTC electric heater heating parts are carried out organic combination, making the present invention both have the metal PTC electrical heated appliance has the advantages such as stable performance, efficient height, life-span length, has advantages of again current limliting and the limiting temperature of ceramic PTC electric heater.
Described conductor adopts the conducting strip of a strip, and a described electrode adopts pellet electrode; Described pellet electrode is attached to described heating ceramic sheet one end, and conducting strip one end of described strip is attached to the described heating ceramic sheet other end, and the conducting strip other end of described strip connects described metal PTC heater strip or is with an end;
The conducting strip both sides of described strip are provided with insulating barrier, described metal PTC heater strip or band are wound on the described insulating barrier outside on the conducting strip of described strip with spirality, by the conducting strip insulation of described insulating barrier and described strip, described metal PTC heater strip or the band other end connect described another electrode.Above-mentioned design, metal PTC heater strip or band are wound on outside insulating barrier with spirality, and firing rate is fast, and homogeneous heating is reliable.
Crossing the coating technique filler between adjacent two described heating ceramic sheets connects.So that adjacent two heating ceramic sheets connect close and firm.
The mica insulation sheet that described insulating barrier preferably adopts mica sheet to make.The insulating capacity of mica material is strong, wear resistence and resistance to wear good, the contacting of conducting strip that can effectively prevent metal PTC heater strip or band and strip as insulating barrier avoided short circuit.
Beneficial effect: owing to having adopted technique scheme, the fixation of heater tube of the present invention and fin has been avoided because of the loosening problem of the aging rear generation of viscose glue, and service time is longer.In addition, the heat radiating metal bar that the present invention adopts, its area of dissipation is large, heating speed is fast.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of heater tube flange when not bending;
Fig. 3 is the heater tube pipe structure generalized section that adds heat sink strip;
Fig. 4 is the end view of heat radiation projection;
Fig. 5 is the schematic cross-section of heat radiation projection;
Fig. 6 is the stereogram of heat radiation projection;
Fig. 7 is the structural representation of Tao Jin mixed type PTC fast electric heater;
Fig. 8 is the cutaway view of Tao Jin mixed type PTC fast electric heater.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, further set forth the present invention below in conjunction with concrete diagram.
With reference to Fig. 1, Fig. 2, Fig. 3, flange connects and fixes the PTC electric heater of heat sink strip, comprises heater tube 1, is provided with PTC heater element 2 in heater tube 1, is connected with the heat radiating metal bar on heater tube 1.Heater tube 1 adopts a strip metal tube, and the top of strip metal tube, bottom both sides along its length are respectively equipped with flange 11,12.Length direction along the strip metal tube on the heat radiating metal bar is placed with to the other end heat radiation projection 3 that a plurality of upwards protuberances form from an end successively, and the cross section of heat radiation projection 3 is fan shape.Form a plurality of fan shape structures in the side of strip metal tube.With reference to Fig. 4, Fig. 5, Fig. 6, heat radiating metal bar bottom is provided with base 35, and base 35 broad ways both sides of the edge are respectively equipped with edge, and base 35 forms K2 type structures with heat radiation projection 3. Flange 11,12 blocks edge, heat radiating metal bar and heater tube 1 by edge are connected with flange, 12 clampings are connected.
During use, the heat radiating metal bar is placed on respectively top, the bottom of strip metal tube, then with flange 11,12 bendings, is fixedly connected with edge by flange 11,12, the heat radiating metal bar is stuck on heater tube 1.With respect to gluing mode, avoided producing the problem of glue flavor, reduced chemical contamination, environmental protection has more been avoided simultaneously because of the loosening problem of the aging rear generation of glue, and service time is longer.
With reference to Fig. 4, Fig. 5, heat radiation projection 3 comprises two sides 31, an end face 33, and the upper width of side 31 is greater than lower width.The lower width of side 31 upwards broadens gradually.The end face 33 of heat radiation projection 3 is provided with at least one heat radiation through hole 34.In order to better dispel the heat.Heat radiating metal strip adoption one strip sheet metal, strip sheet metal upwards bending are bent to form heat radiation projection 3 downwards.
When making the heat radiating metal bar, can adopt following scheme: the width of the bossing of heat radiation projection 3 is less than the bottom width of heat radiation projection 3.The bottom of at least two heat radiation projections 3 is arranged in base 35.Adopt a strip sheet metal just can be converted into a plurality of heat radiation projections in manufacture process, form the heat radiating metal bar.In addition, greater than bottom width, the upper width of the side of heat radiation projection is greater than lower width due to the width of the bossing of heat radiation projection, therefore during fabrication, should carry out cutting to the metal of the projection of dispelling the heat, to reduce width.
When making the heat radiating metal bar, can also adopt following scheme: the strip sheet metal between heat radiation projection 3 a heat radiation projection 3 adjacent with another partly is the connection metal sheet, the width of connection metal sheet is greater than the width of protruding 3 bottoms of heat radiation, and at least two connection metal sheets are arranged in base 35.In manufacture process, can be before bending heat radiating metal bar, the part edge that first will be bent into the heat radiation projection carries out cutting, to reduce width, is convenient to make the width of base greater than the width of heat radiation projection.
With reference to Fig. 1, the top of strip metal tube, bottom are respectively equipped with the heat radiating metal bar, the top edge of the heat radiation projection of strip metal tube top heat radiating metal bar is 15-30 ± 0.5mm to the distance of the lower limb of the heat radiation projection of strip metal tube bottom heat radiating metal bar, preferred 24mm.
The width of strip metal tube is greater than the width of heat radiation projection, and the width of strip metal tube is 12-20 ± 0.2mm, preferred 18mm.
The width of heat radiation projection is 12-20 ± 0.5mm, preferred 15mm; Be highly 5-15 ± 0.5mm, preferred 9.5mm.
On the strip metal tube, the distance of two adjacent heat radiation projections is 2-5 ± 0.5mm, preferred 3mm.
With reference to Fig. 4, preferably be provided with 34, three heat radiation through holes 34 of three heat radiation through holes on the heat radiation projection and arrange along the Width of heat radiation projection successively, the distance between two heat radiation through holes 34 of being separated by is 2-5 ± 0.2mm, preferred 3mm.
The two ends of heater tube 1 are respectively equipped with opening, and an opening connects binding post, and another opening part is provided with sealing plug.When concrete making PTC electric heater of the present invention, with reference to Fig. 2, be surrounded by insulating paper 21 on PTC heater element 2, insulating paper 21 is the insulating paper of a strip, insulating paper 21 is wound on PTC heater element 2 in a spiral manner, and 21 of two adjacent rings insulating papers have an overlapping portion.Coiling insulating paper 21 is on PTC heater element 2 in a spiral manner, compare in the past tightr around the mode of formula winding insulating paper 21, reduced the generation in space, also the convenient PTC heater element 2 that coiling is good is put in heater tube 1, minimizing does not closely cause the possibility of heater tube 1 body generation noise due to insulating paper 21 coilings, increase the useful life of electric heating organ pipe 1.
With reference to Fig. 7, Fig. 8, Tao Jin mixed type PTC fast electric heater comprises a heat generating components 41, heat generating components 41 is connected with electrode 421, electrode 422, heat generating components 41 comprises heating ceramic sheet 43 and metal PTC heater strip or band, as shown in Figure 7, preferably adopts metal PTC heater strip 45.Electrode 421 connects heating ceramic sheet 43 1 ends, and the other end of heating ceramic sheet 43 is by conductor connection metal PTC heater strip or be with an end, metal PTC heater strip or band other end connecting electrode 422.The present invention is after electric current flows into an electrode place, and through heating ceramic sheet 43, then by conductor, flow through metal PTC heater strip or band flow to another electrode at last, complete whole loop.The heating ceramic sheet 43 that adopts in traditional ceramic PTC electric heater has advantages of current limitation and limiting temperature, can play to the current temperature of electric heater the self feed back effect.The metal PTC heater strip of metal PTC electric heater or band have the advantages such as stable performance, efficient height, life-span length.By above-mentioned design, ceramic PTC electric heater heat generating components 41 and metal PTC electric heater heating parts 41 are carried out organic combination, making the present invention both have the metal PTC electrical heated appliance has the advantages such as stable performance, efficient height, life-span length, has advantages of again current limliting and the limiting temperature of ceramic PTC electric heater.In addition, arbitrarily crooked, the moulding of heating part by metal PTC heater strip or band consist of can better adapt to installation environment.
Conductor adopts the conducting strip 44 of a strip.Electrode 21 adopts pellet electrodes, and pellet electrode is attached to heating ceramic sheet 43 1 ends, and conducting strip 44 1 ends of strip are attached to heating ceramic sheet 43 other ends, conducting strip 44 other end connection metal PTC heater strips of strip or be with an end.Conducting strip 44 both sides of strip are provided with insulating barrier 46, and metal PTC heater strip or band are wound on insulating barrier 46 outsides on the conducting strip 44 of strip with spirality, by conducting strip 44 insulation of insulating barrier 46 with strip.Metal PTC heater strip or band other end connecting electrode 422.Crossing the coating technique filler between adjacent two heating ceramic sheets 43 connects.So that adjacent two heating ceramic sheets 43 connect close and firm.
The preferred mica insulation sheet that adopts mica sheet to make of insulating barrier 46.The insulating capacity of mica material is strong, wear resistence and resistance to wear good, the contacting of conducting strip 44 that can effectively prevent metal PTC heater strip or band and strip as insulating barrier 46 avoided short circuit.
The heat radiating metal bar that heat radiating metal strip adoption aluminum is made.The heat radiating metal bar of aluminum has good heat conductivility, oxidative resistance, so that improve the thermal diffusivity of heat radiating metal bar, and the useful life that increases the heat radiating metal bar.The thickness of the strip sheet metal of heat radiating metal strip adoption is the 0.1-0.5mm left and right.
Above demonstration and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (10)
1. flange connects and fixes the PTC electric heater of heat sink strip, comprise heater tube, be provided with the PTC heater element in described heater tube, be connected with the heat radiating metal bar on described heater tube, it is characterized in that, described heater tube adopts a strip metal tube, and the top of described strip metal tube, bottom both sides along its length are respectively equipped with flange;
Length direction along described strip metal tube on described heat radiating metal bar is placed with to the other end heat radiation projection that a plurality of upwards protuberances form from an end successively, forms a plurality of fan shape structures in the side of described strip metal tube;
Described heat radiating metal bar bottom is provided with base, and described base broad ways both sides of the edge are respectively equipped with edge;
Described flange blocks described edge, and clamping is connected described heat radiating metal bar with flange by edge with described heater tube.
2. flange according to claim 1 connects and fixes the PTC electric heater of heat sink strip, it is characterized in that, described heat radiation projection comprises two sides, an end face, and the upper width of described side is greater than lower width;
The end face of described heat radiation projection is provided with at least one heat radiation through hole.
3. flange according to claim 2 connects and fixes the PTC electric heater of heat sink strip, it is characterized in that, described heat radiating metal strip adoption one strip sheet metal, described strip sheet metal upwards bending are bent to form described heat radiation projection downwards;
The width of the bossing of described heat radiation projection is less than the protruding bottom width of described heat radiation;
Be arranged in described base bottom at least two described heat radiation projections.
4. flange according to claim 2 connects and fixes the PTC electric heater of heat sink strip, it is characterized in that, described heat radiating metal strip adoption one strip sheet metal, described strip sheet metal upwards bending are bent to form described heat radiation projection downwards;
Described strip sheet metal between one described heat radiation projection heat radiation projection adjacent with another is partly the connection metal sheet, and the width of described connection metal sheet is greater than the width of described heat radiation projection bottom, and at least two described connection metal sheets are arranged in described base.
5. according to claim 1,2,3 or 4 described flange connect and fix the PTC electric heater of heat sink strip, it is characterized in that, the top of described strip metal tube, bottom are respectively equipped with described heat radiating metal bar, and the top edge of the heat radiation projection of described strip metal tube top heat radiating metal bar is 24 ± 0.5mm to the distance of the lower limb of the heat radiation projection of described strip metal tube bottom heat radiating metal bar.
6. flange according to claim 5 connects and fixes the PTC electric heater of heat sink strip, it is characterized in that, described PTC heater element can also adopt Tao Jin mixed type PTC fast electric heating element, Tao Jin mixed type PTC fast electric heating element comprises a heat generating components, described heat generating components is connected with two electrodes, and described heat generating components comprises heating ceramic sheet and metal PTC heater strip or band;
One described electrode connects heating ceramic sheet one end, and the other end of described heating ceramic sheet connects described metal PTC heater strip or is with an end by conductor, and described metal PTC heater strip or the band other end connect another described electrode.
7. flange according to claim 6 connects and fixes the PTC electric heater of heat sink strip, it is characterized in that, described conductor adopts the conducting strip of a strip, and a described electrode adopts pellet electrode; Described pellet electrode is attached to described heating ceramic sheet one end, and conducting strip one end of described strip is attached to the described heating ceramic sheet other end, and the conducting strip other end of described strip connects described metal PTC heater strip or is with an end;
The conducting strip both sides of described strip are provided with insulating barrier, described metal PTC heater strip or band are wound on the described insulating barrier outside on the conducting strip of described strip with spirality, by the conducting strip insulation of described insulating barrier and described strip, described metal PTC heater strip or the band other end connect described another electrode;
Crossing the coating technique filler between adjacent two described heating ceramic sheets connects;
The mica insulation sheet that described insulating barrier preferably adopts mica sheet to make.
8. according to claim 1,2,3 or 4 described flange connect and fix the PTC electric heater of heat sink strip, it is characterized in that, the two ends of described heater tube are respectively equipped with an opening, a described opening connects binding post, another described opening part is provided with sealing plug.
9. flange according to claim 8 connects and fixes the PTC electric heater of heat sink strip, it is characterized in that, the PTC heater element adopts the metal PTC heater element.
10. flange according to claim 9 connects and fixes the PTC electric heater of heat sink strip, it is characterized in that, the PTC heater element adopts the ceramic PTC heater element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210009104XA CN103096535A (en) | 2011-11-08 | 2012-01-12 | Polymeric positive temperature coefficient (PTC) electric heater with flangings fixed with heat dissipation strips in clamping mode |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110350816 | 2011-11-08 | ||
| CN201110350816.3 | 2011-11-08 | ||
| CN201210009104XA CN103096535A (en) | 2011-11-08 | 2012-01-12 | Polymeric positive temperature coefficient (PTC) electric heater with flangings fixed with heat dissipation strips in clamping mode |
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| Publication Number | Publication Date |
|---|---|
| CN103096535A true CN103096535A (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210009104XA Pending CN103096535A (en) | 2011-11-08 | 2012-01-12 | Polymeric positive temperature coefficient (PTC) electric heater with flangings fixed with heat dissipation strips in clamping mode |
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| CN (1) | CN103096535A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104039031A (en) * | 2014-06-27 | 2014-09-10 | 朱华峰 | PTC electric heating pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104039031A (en) * | 2014-06-27 | 2014-09-10 | 朱华峰 | PTC electric heating pipe |
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Application publication date: 20130508 |