CN101791199A - Electric heating element structure for vacuum thermos - Google Patents
Electric heating element structure for vacuum thermos Download PDFInfo
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- CN101791199A CN101791199A CN201010003108A CN201010003108A CN101791199A CN 101791199 A CN101791199 A CN 101791199A CN 201010003108 A CN201010003108 A CN 201010003108A CN 201010003108 A CN201010003108 A CN 201010003108A CN 101791199 A CN101791199 A CN 101791199A
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Abstract
The invention relates to an electric heating element structure for a vacuum thermos, and is characterized in that the electric heating element structure comprises a vacuum interlayer side wall and a bottom, the vacuum interlayer side wall is provided with an inward flanged edge, the bottom is higher than the inward flanged edge and is provided with a heating plate, a ring is arranged below the periphery of the bottom, the bottom is connected with the inward flanged edge of the vacuum interlayer side wall through the lower ring of the ring, the heating plate comprises an upper metal plate, an electric heating plate and an aluminum alloy plate, the electric heating plate is arranged below the metal plate, the aluminum alloy plate is arranged below the electric heating plate and is provided with an outward flanged edge, and the outer diameter of the outward flanged edge of the aluminum alloy plate is slightly smaller than the inner diameter of the ring arranged below the periphery of the bottom. Compared with the prior art, the invention has the advantages that the structure is not affected by scales and the heat transfer efficiency is high.
Description
Technical field:
The present invention relates to a kind of Household Appliance heating element structure, particularly thermos bottle electric heating element structure.
Background technology:
Existing thermos bottle mainly contains two kinds with electric heating element structure, and a kind of is that electric heating body is arranged in the thermos bottle, and a kind of is that electric heating body is arranged on outside the thermos bottle.The advantage that electric heating body is arranged in the thermos bottle is that electric heating body can fully contact with water, and heat exchanger effectiveness is the highest, and shortcoming is that easy outer surface at electric heating body forms incrustation scale, thereby seriously influences the water quality of the heat transfer efficiency and the drinking water of electric heating body.Electric heating body is arranged on outside the thermos bottle, though overcome the shortcoming of structure in first,,, make the heat transfer efficiency of heater be subjected to very big influence because existing technology has only been utilized the wherein one side of heater.
Summary of the invention:
Goal of the invention of the present invention is to provide a kind of electric heating element structure for vacuum thermos that incrustation scale influences, heat transfer efficiency is high that can not be subjected to.
Scheme one: the present invention realizes like this, comprise the vacuum interlayer sidewall that has in-flanges, the end that has heating plate that exceeds in-flanges, it below the bottom perimeter annulus, the end, link together by the following annulus of annulus and the in-flanges of vacuum interlayer sidewall, heating plate comprise the upper strata metallic plate, be positioned at electric boiling plate below the metallic plate, be positioned at the aluminium alloy plate that has outer side flanging below the electric boiling plate, the outer side flanging outer radius of aluminium alloy plate is slightly than the little 0-1.50mm of inside radius of the following annulus of bottom perimeter.During heating, the alloy aluminium sheet expands, and its flange part closely contacts because of expansion with the bottom periphery annulus, thereby has increased the heat transfer area of heating plate.Container body neighboring, bottom (inner rim contacts with the alloy aluminium sheet) is exposed and is contacted with heating liquid, so, can reach the purpose that heating board top and periphery heat liquid together, thermal efficiency utilization is higher, heat-transfer effect is significantly improved than common heating mode, and near the temperature rise ratio common heating structure making bottom the heating board obviously reduces, and near electronic component and the wiring board that is contained in the bottom had very big benefit.Employing has the aluminium alloy plate of outer side flanging and easy deformation, heating plate was embedded in the annulus of bottom perimeter easily, and, because it does not allow to be subject to the constraint of whole heating plate, make its back swell increment of being heated big, easier its flange part that makes closely contacts because of expansion with the bottom periphery annulus.
Here, in order to make the present invention have heating, heat insulation function, be fixed with low-power insulation electric boiling plate below the alloy aluminium sheet below the electric boiling plate, below the low-power insulation electric boiling plate is fixed metal plate, fixed metal plate is fixed together electric boiling plate, aluminium alloy plate, low-power insulation electric boiling plate with the metallic plate on upper strata.
Install control device for convenience, the centre of the metallic plate on upper strata, electric boiling plate, alloy aluminium sheet, low-power insulation electric boiling plate, fixed metal plate all is perforation, the metallic plate on upper strata perforation below be provided with the bound edge that the limit with electric boiling plate, alloy aluminium sheet, low-power insulation electric boiling plate, fixed metal plate hollow wraps.Like this, when electric boiling plate, alloy aluminium sheet, low-power insulation electric boiling plate expanded by heating, can only outwards expand, guarantee that the outer side flanging of aluminium alloy plate has enough expansion energies to abut against on the bottom periphery annulus.
Scheme two: the present invention realizes like this, the end that has heating plate of the in-flanges that comprise the vacuum interlayer sidewall that has in-flanges, exceeds the vacuum interlayer sidewall, it below the bottom perimeter annulus, the end, link together by the following annulus of annulus and the in-flanges of vacuum interlayer sidewall, heating plate is a cast aluminium electrothemic plate, the end and heating plate upper surface match, and the gap between heating plate side and annulus is 0.05-1.00mm.The heating plate upper surface is an epirelief sphere, and the end is a sphere that matches with the heating plate upper surface.During heating, heating plate expands, and its lateral parts closely contacts because of expansion with the bottom periphery annulus, thereby has increased the heat transfer area of heating plate.Container body neighboring, bottom (inner rim contacts with the alloy aluminium sheet) is exposed and is contacted with heating liquid, so, can reach the purpose that heating plate top and periphery heat liquid together, thermal efficiency utilization is higher, heat-transfer effect is significantly improved than common heating mode, and near the temperature rise ratio common heating structure making bottom the heating board obviously reduces, and near electronic component and the wiring board that is contained in the bottom had very big benefit.The heating plate upper surface adopts sphere, and heating plate expands, and its lateral parts and bottom periphery annulus make the bottom periphery annulus produce an outside pulling force because of expansion closely contacts, and like this, under the effect of pulling force, the end just more is close on the sphere heating plate.Adopting the gap between heating plate side and annulus is 0.05-1mm, in the time of can making heating, the heating plate lateral parts closely contacts because of expansion with the bottom periphery annulus, simultaneously, again can be not excessive because of expansive force, cause the end to produce inelastic deformation, the internal diameter of bottom periphery annulus is enlarged, finally after the internal diameter of constantly accumulation enlarges, cause the heating plate lateral parts after thermal expansion, all can not closely contact, influenced heat-transfer effect with the bottom periphery annulus.The advantage of scheme two is the simple in structure of heater, but its circle diameter machining accuracy is than scheme one height, scheme one is owing to have only the in-flanges of heating plate side to lean against on the vacuum interlayer sidewall, other position of heating plate side does not contact with the vacuum interlayer sidewall, makes the vacuum interlayer sidewall fully not obtain heat energy from electric boiling plate.Scheme two has just solved the deficiency of scheme 1.
Compared with the prior art the present invention has and can not be subjected to incrustation scale influence, advantage that heat transfer efficiency is high.
Description of drawings:
Fig. 1 is the structural representation of the embodiment of the invention 1;
The local structure for amplifying schematic diagram of the electric boiling plate of the present invention that Fig. 2 is ordered for Figure 1A;
Fig. 3 is the structural representation of the embodiment of the invention 2.
The specific embodiment:
Now in conjunction with the accompanying drawings and embodiments the present invention is described in further detail:
Embodiment one: as Fig. 1, shown in 2, the present invention includes the vacuum interlayer sidewall 1 that has in-flanges 1a, that link together and exceed the end that has heating plate 23 of in-flanges 1a with vacuum interlayer sidewall 1, be annulus 6 below the peripheral 3a in the ends 3, the end 3, link together by the following annulus 6a of annulus 6 and the in-flanges 1a of vacuum interlayer sidewall 1, heating plate 2 comprises the metallic plate 2a on upper strata, be positioned at the electric boiling plate 2b below the metallic plate 2a, be positioned at the aluminium alloy plate 2d that has outer side flanging 2c below the electric boiling plate 2b, the outer side flanging 2c external diameter of the aluminium alloy plate 2d internal diameter than the following annulus 6 of the peripheral 3a in the ends 3 slightly is little.Electric boiling plate 2b twists in circular mica sheet by heating wire and forms.Being fixed with low-power insulation electric boiling plate 2e below the alloy aluminium sheet 2d below the electric boiling plate 2b, is fixed metal plate 2f below the low-power insulation electric boiling plate 2e.The metallic plate 2a on upper strata, electric boiling plate 2b, alloy aluminium sheet 2d, low-power insulation electric boiling plate 2e, fixed metal plate 2f are hollow, are provided with the bound edge 2g that the limit with electric boiling plate 2b, alloy aluminium sheet 2d, low-power insulation electric boiling plate 2e, fixed metal plate 2f hollow wraps below the hole 2a1 of the hollow of the metallic plate 2a on upper strata.
Embodiment two: as shown in Figure 3, the present invention is on the basis of embodiment 1, heating plate 2 is cast aluminium electrothemic plates, heating plate 2 upper surface 2h are epirelief spheres, the end 3 is spheres that match with heating plate 2 upper surface 2h, is perforation in the middle of the heating plate 2, presents convex at the end 3 of corresponding perforation, so that the installing Temperature Detector, the gap B that heating plate 2 side 2i and annulus are 6 is 0.05-1.00mm.The gap B that heating plate 2 side 2i and annulus are 6 is to be best between 0.05-0.50mm.
Claims (10)
1. electric heating element structure for vacuum thermos, it is characterized in that comprising the vacuum interlayer sidewall that has in-flanges, the end that has heating plate that exceeds in-flanges, it below the bottom perimeter annulus, the end, link together by the following annulus of annulus and the in-flanges of vacuum interlayer sidewall, heating plate comprise the upper strata metallic plate, be positioned at electric boiling plate below the metallic plate, be positioned at the aluminium alloy plate that has outer side flanging below the electric boiling plate, the outer side flanging external diameter of the aluminium alloy plate internal diameter than the following annulus of bottom perimeter slightly is little.
2. electric heating element structure for vacuum thermos according to claim 1, it is characterized in that being fixed with low-power insulation electric boiling plate below the alloy aluminium sheet below the electric boiling plate, below the low-power insulation electric boiling plate is fixed metal plate, fixed metal plate is fixed together electric boiling plate, aluminium alloy plate, low-power insulation electric boiling plate with the metallic plate on upper strata.
3. electric heating element structure for vacuum thermos according to claim 2, metallic plate, the electric boiling plate, alloy aluminium sheet, low-power insulation electric boiling plate, the fixed metal plate that it is characterized in that the upper strata all are hollow, are provided with the bound edge that the limit with electric boiling plate, alloy aluminium sheet, low-power insulation electric boiling plate, fixed metal plate hollow wraps below the hole of the hollow of the metallic plate on upper strata.
4. according to claim 1 or 2 or 3 described electric heating element structure for vacuum thermos, it is characterized in that the vacuum interlayer sidewall is by interior stainless steel cylinder, the upper end of outer stainless steel cylinder, in the lower end side of turning over be welded to each other and form, the lower end lateral surface that turns in the interior stainless steel cylinder is circular vertical plane, the circular vertical plane of the vertical plane of the lower end side of turning in the outer stainless steel cylinder and interior stainless steel cylinder lower end lateral surface is welded to each other together, the circular vertical plane of the lower end lateral surface that turns in the following annulus of bottom perimeter and the interior stainless steel cylinder matches, the bottom of the circular vertical plane of the lower end lateral surface that turns in the interior stainless steel cylinder and the following annulus of bottom perimeter is welded to each other together, heating plate be fixed on the end below.
5. according to claim 1 or 2 or 3 described electric heating element structure for vacuum thermos, it is characterized in that the last circle diameter of annulus of bottom perimeter is littler than following circle diameter, last annulus, be provided with conical ring between annulus down.
6. electric heating element structure for vacuum thermos according to claim 4 is characterized in that the last circle diameter of annulus of bottom perimeter is littler than following circle diameter, last annulus, is provided with conical ring between annulus down.
7. electric heating element structure for vacuum thermos according to claim 6 is characterized in that stainless steel cylinder lower end outside is provided with the vacuum-pumping tube of sealing.
8. electric heating element structure for vacuum thermos, the end that has heating plate of the in-flanges that it is characterized in that comprising the vacuum interlayer sidewall that has in-flanges, exceeds the vacuum interlayer sidewall, it below the bottom perimeter annulus, the end, link together by the following annulus of annulus and the in-flanges of vacuum interlayer sidewall, heating plate is a cast aluminium electrothemic plate, the heating plate upper surface is an epirelief sphere, and the end is a sphere that matches with the heating plate upper surface, and the gap between heating plate side and annulus is 0.05-1.00mm.
9. electric heating element structure for vacuum thermos according to claim 1 is characterized in that the gap between heating plate side and annulus is between 0.05-0.50mm.
10. according to Claim 8 or 9 described electric heating element structure for vacuum thermos, it is characterized in that the heating plate upper surface is an epirelief sphere, the end is a sphere that matches with the heating plate upper surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100031088A CN101791199B (en) | 2009-02-16 | 2010-01-04 | Electric heating element structure for vacuum thermos |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200910037335XA CN101502387A (en) | 2009-02-16 | 2009-02-16 | Electro-heating element structure for vacuum thermos flask |
| CN200910037335.X | 2009-02-16 | ||
| CN2010100031088A CN101791199B (en) | 2009-02-16 | 2010-01-04 | Electric heating element structure for vacuum thermos |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101791199A true CN101791199A (en) | 2010-08-04 |
| CN101791199B CN101791199B (en) | 2011-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010100031088A Expired - Fee Related CN101791199B (en) | 2009-02-16 | 2010-01-04 | Electric heating element structure for vacuum thermos |
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| CN (1) | CN101791199B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105996760A (en) * | 2016-08-12 | 2016-10-12 | 滁州东菱电器有限公司 | Dry burning preventing glass kettle |
| CN111802912A (en) * | 2020-05-26 | 2020-10-23 | 浙江大学 | Energy-saving kettle |
-
2010
- 2010-01-04 CN CN2010100031088A patent/CN101791199B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105996760A (en) * | 2016-08-12 | 2016-10-12 | 滁州东菱电器有限公司 | Dry burning preventing glass kettle |
| CN111802912A (en) * | 2020-05-26 | 2020-10-23 | 浙江大学 | Energy-saving kettle |
| CN111802912B (en) * | 2020-05-26 | 2021-05-14 | 浙江大学 | Energy-saving kettle |
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| Publication number | Publication date |
|---|---|
| CN101791199B (en) | 2011-10-05 |
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Granted publication date: 20111005 Termination date: 20170104 |
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| CF01 | Termination of patent right due to non-payment of annual fee |