CN2838195Y - Electric heating structure - Google Patents
Electric heating structure Download PDFInfo
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- CN2838195Y CN2838195Y CN 200520130250 CN200520130250U CN2838195Y CN 2838195 Y CN2838195 Y CN 2838195Y CN 200520130250 CN200520130250 CN 200520130250 CN 200520130250 U CN200520130250 U CN 200520130250U CN 2838195 Y CN2838195 Y CN 2838195Y
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- electric
- heat
- electric heating
- heating structure
- conducting plate
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Abstract
The utility model provides an electric heating structure, which is mainly composed of a heat conducting plate for conducting the heat energy, a heating chip structure arranged on the bottom of the heat conducting plate, a metal electrode used for electric conduction and an electrical conduction element, wherein the heating chip structure comprises a porous insulating layer and an electric heating membrane made of oxide electric conducting materials; the metal electrode is combined with the electric heating membrane; one end of the electrical conduction element is connected with the metal electrode, and the other end is connected with a power connected with a terminal, thereby, the metal electrode, the electrical conduction element and the power connected with the terminal form the electric conduction state. After the external power is conducted to the heating chip structure via the electrical conduction element, the electric energy can be converted to the heat energy and then the heat energy is transmitted to the heat conducting plate to cause the heat conducting plate to generate heat.
Description
Technical field
The utility model relates to a kind of electric heating structure, particularly a kind of oxide conductive film that makes the high electric conversion efficiency of apparatus, the formed high efficiency electric heating structure of structural design that complexed metal heat-conducting plate, porous matter insulating barrier and hot biography approach are the shortest.
Background technology
The technological means that converts electrical energy into heat energy has been widely used in all kinds of electric heating products, tradition utilizes nichrome resistance wire to make electric current and resistance effect produce the mode that Joule effect converts electrical energy into heat energy, impedance operator because of materials used, follow the power conversion phenomenon of non-Joule heat, cause electrical power to convert the energy loss of thermal power to, cause electric conversion efficiency to descend, therefore, industry develops again and a kind of oxide electric heating film with higher electric conversion efficiency, described Electric radiant Heating Film is that the semiconduction oxide material with proper resistor coefficient is made film layer structure, generally be to adopt spiral helicine high resistance (nickel, chromium, the alloy of iron) metal film, its electric capacity and inductance composition are extremely low, under mains frequency (60Hz), present good pure resistance characteristic, can make electric energy complete convert heat energy to, under identical input power, Electric radiant Heating Film has higher electric conversion efficiency than the general nichrome resistance wire that uses.
The enforcement structure of relevant above-mentioned oxide electric heating film can be consulted patent US20020190051, US20040026411, WO0198054, EP1571888 or the like, with U.S. Pat 20020190051 is example, as shown in Figure 1, described heating plate 82 is to cohere Electric radiant Heating Film 82b on base material 82a, go up in Electric radiant Heating Film 82b again and arrange heater coil 82c, the two ends of heater coil 82c are provided with electrode 82d, though described heating plate 82 can be arranged enough large-area heater coil 82c on base material 82a, but be subject to metallic conductivity and required electrical power, make Electric radiant Heating Film 82b structure become complicated, in addition, heater coil 82c has the gap, still can make base material 82a produce the uneven phenomenon of being heated.
Secondly, because Electric radiant Heating Film has conductivity, when being made in metal or conductive base, must coat with insulating barrier, described class technological means is exposed in patents such as US20050167414, US6752071, WO0111924, JP2000275078, is example with U.S. Pat 20050167414, as shown in Figure 2, be coated with insulating barrier 92,93 at Electric radiant Heating Film 91 upper and lower surfaces, so Electric radiant Heating Film 91 can be incorporated into base material 94 bottoms of metal or conductive base, right described structure has following disappearance:
One, the expansion coefficient difference of insulating barrier 92,93 and Electric radiant Heating Film 91 is big, makes insulating barrier 92,93 produce be full of cracks easily, causes the zygosity deterioration;
Two, because of Electric radiant Heating Film 91 is to adopt the helical form thick-film resistor, make to be coated on 92,93 of insulating barriers because of the inequality of dispelling the heat produces local overheating, cause Electric radiant Heating Film 91 to blow.
For improving the disappearance that above-mentioned employing metal or conductive base are produced, therefore can adopt as glass, non-metallic materials such as glass ceramics or pool magnetic steel plate, described class technological means is exposed in US6225608, WO0065877, AU8069375, EP0954201, in various countries' patent contents such as CN1444887, but the right non-metallic substrate that uses derives other problem, except that heat conduction is relatively poor, the anti-mechanical impact intensity of structure is also relatively poor, though and enamelled pressed steel has higher thermal conductivity, but the glaze of surface of steel plate is under long-time electric heating work, also is easy to generate be full of cracks and causes electric leakage.
Again with electrode contact welding kenel, the output of general Electric radiant Heating Film is gone into electrode contact and can be adopted welding and insulating material to coat dual mode, described prior art means are exposed in respectively in the patents such as WO0111924, JP2003168685, because the thickness of Electric radiant Heating Film is limited, therefore adopt welding manner can destroy Electric radiant Heating Film intensity and cause distortion, and adopt the insulation material to coat mode, then can cause then intensity and work differences in expansion problem again, also be easy to generate contact resistance and raise, cause contact to damage at last.
Summary of the invention
Main purpose of the present utility model is to provide a kind of electric heating structure, and it makes the oxide electric heating film of the high electric conversion efficiency of apparatus, and complexed metal heat-conducting plate, porous matter insulating barrier and the shortest structural design of hot biography approach have the high efficiency of heating surface.
Secondary objective of the present utility model is to provide a kind of electric heating structure, the effectiveness that can reach power saving, save time and evenly heat.
Another purpose of the present utility model is to provide a kind of electric heating structure, and its temperature adjusting range is big, is suitable for being applied to cooking apparatus especially.
For achieving the above object, the utility model provides a kind of electric heating structure, it mainly is to be made of heating plate structure, a metal electrode and an electric-conductor in order to conduction that a heat-conducting plate, in order to conduction heat energy is arranged at heat-conducting plate bottom, described heating plate structure comprises the Electric radiant Heating Film of a porous matter insulating barrier and oxide conducting material, described metal electrode is to combine with Electric radiant Heating Film, one end of described electric-conductor is connected in metal electrode, and the other end connects a power supply and follows terminal; Thus, described metal electrode, electric-conductor, power supply are followed terminal and are constituted the state that electrically conducts, and external power source can convert electrical energy into heat energy and transfer to heat-conducting plate after conducting to the heating plate structure via electric-conductor, make the heat-conducting plate heating.
Preferably, described heat-conducting plate is the metal material that has thermal conductivity for stainless steel etc.
Preferably, described heat-conducting plate surface is coated with the far infrared irradiation material.
Preferably, the heating plate structure is to follow with interface to follow in heat-conducting plate after strengthening layer is coated in porous matter insulating barrier again.
Preferably, described interface is followed strengthening layer and is formed by the glass that fuses high expansion coefficient after thermal spraying aluminium oxide or the sandblast.
Preferably, the coefficient of expansion of described glass reaches more than 50% of heat-conducting plate coefficient of expansion value.
Preferably, described porous matter insulating barrier is by the insulating properties oxide, and as aluminium oxide, zirconia, silica, zeolite, green stone etc., and the glass powder of softening temperature below 800 ℃ forms.
Preferably, described porous matter insulating barrier has and is dispersed in the insulating barrier and occupies the 20% a plurality of holes with lower volume.
Preferably, the described hole diameter is positioned between 0.05 to 10 micron.
Preferably, described Electric radiant Heating Film is made by tin oxide, indium oxide or zinc oxide electric conducting material.
Preferably, described Electric radiant Heating Film is to combine with porous matter insulating barrier by vitreous layer.
Preferably, described vitreous layer is that the glass dust of softening point below 800 ℃ forms through the fusion of heating.
Preferably, described metal electrode is to combine with Electric radiant Heating Film by the elargol electrode.
Preferably, described metal electrode is the bonding jumper that has high conductivity for copper, iron nickel, titanium alloy etc.
Preferably, described electric-conductor is heat-resisting conducting strip or the lead that coats heat-resisting material.
Preferably, described electric heating structure is to be arranged in the casing, is provided with a shell fragment between metal electrode and casing, and the elasticity that has by described shell fragment brings pressure to bear on the metal electrode, can guarantee that Electric radiant Heating Film well contacts with metal electrode.
Preferably, be provided with an insulating barrier between described shell fragment and the metal electrode.
Preferably, it is to be arranged on the casing that described power supply is followed terminal, is provided with the high temperature insulation sheet between described electric-conductor and the casing.
The utlity model has following advantage:
1. use the Electric radiant Heating Film of the oxide conducting material with high electric conversion efficiency, electric capacity and inductive in the time of can reducing energising present good pure resistance characteristic;
2. Electric radiant Heating Film directly is made in the heat-conducting plate bottom of coating porous matter insulating barrier, with heat-conducting plate as heating plate, its heat transfer approach is the shortest, heat exchange pattern is direct, can reduce heat and run off, reach maximum heat energy transmission, and can obtain the high efficiency of heating surface, in the input of same electrical power down, can be than the rate of heat addition of traditional electrical heat structure increase more than 30%;
3. Electric radiant Heating Film is to be bonded in porous matter surface of insulating layer, described insulating barrier not only can be avoided the electric leakage between Electric radiant Heating Film and heat-conducting plate, simultaneously its porosity characteristic can provide the buffering of the different stress that produce of coefficient of expansion degree between heat-conducting plate and Electric radiant Heating Film, avoids Electric radiant Heating Film to produce be full of cracks because of cold and hot variations in temperature significantly;
4. the termination electrode of Electric radiant Heating Film is to use with the elargol electrode and burns attached metal electrode, and described metal electrode directly connects power supply via rivet, electric-conductor, rivet and follows terminal, Electric radiant Heating Film is used often all can be kept low electricity condition;
5. metal electrode sees through insulating barrier and is resisted against Electric radiant Heating Film with the rubber-like metal clips, has well between metal electrode and metal electrode, the elargol electrode in the time of can guaranteeing Electric radiant Heating Film work electrically to contact;
6. Electric radiant Heating Film is directly pasted heat-conducting plate, can guarantee that heat-conducting plate integral body has the high efficiency of heating surface, and the effect that reaches power saving, saves time and evenly heat is by being applicable to cooking appliance.
Further understand and approval for structure purpose of the present utility model and effect are had, cooperate icon to describe in detail as after.
Description of drawings
Fig. 1 is the heating board structure schematic diagram of existing U.S. Pat 20020190051;
Fig. 2 is existing U.S. Pat 20050167414 coats Electric radiant Heating Film with insulating barrier a structural representation;
Fig. 3 is the generalized section of the utility model preferred embodiment structure;
Fig. 3 A-A is the A-A bilge construction enlarged drawing of Fig. 3;
Fig. 4 is the efficiency of heating surface comparison diagram of the utility model and other heterogeneity heater.
Description of reference numerals
The utility model: 1 heat-conducting plate; 11 sides; 12 inner spaces; 13 top peripheries; 2 heating plate structures; 21 porous matter insulating barriers; 211 holes; 22 vitreous layer; 23 Electric radiant Heating Film; 3 electrode fixed structures; 31 metal electrodes; 32 elargol electrodes; 33 shell fragments; 4 wiring constructions; 41 electric-conductors; 42,43 rivets; 44 high temperature insulation sheets; 5 interfaces are followed strengthening layer; 6 insulating barriers; 7 casings; 71 screws; 72 pedestals; 73 power supplys are followed terminal.
Existing structure: 82 heating plates; The 82a-base material; The 82b-Electric radiant Heating Film; The 82c-heater coil; The 82d-electrode; 91 Electric radiant Heating Film; 92,93 insulating barriers; 94 base materials.
Embodiment
See also the generalized section of the utility model preferred embodiment structure shown in Figure 3, and the structure enlarged drawing shown in Fig. 3 A-A, a kind of electric heating structure that the utility model provides, it is made of a heat-conducting plate 1, heating plate structure 2, electrode fixed structure 3, wiring construction 4, and above-mentioned heat-conducting plate 1, heating plate structure 2, electrode fixed structure 3, wiring construction 4 all are arranged on a casing 7 inside.
Described heat-conducting plate 1, be usefulness as conduction heat energy, can adopt stainless steel etc. to have the metal material of thermal conductivity, as shown in the figure, the side 11 of described heat-conducting plate 1 be processing upwards bending make heat-conducting plate 1 be one bowl-shape, its inner space 12 can be for holding object to be heated, also side 11 can be bent downwards, make described heat-conducting plate 1 present a platform-like, also can pass effect to increase heat at described heat-conducting plate 1 surface spraying far infrared irradiation material, in addition, described heat-conducting plate 1 top periphery 13 is to be embedded in the described casing 7, is directly conducted to casing 7 for avoiding heat-conducting plate 1 heat, can heat insulation structural be set on the composition surface of heat-conducting plate 1 and casing 7, as foamed plastic, bakelite, fire-resistant cottons etc., this is a prior art, so do not repeat them here.
Described heating plate structure 2, be to follow strengthening layer 5 by an interface to be incorporated into above-mentioned heat-conducting plate 1 bottom, described interface is followed strengthening layer 5 and is a kind of insulating properties oxide skin(coating) with high associativity, can use the glass that fuses high expansion coefficient after thermal spraying aluminium oxide or the sandblast, the coefficient of expansion of described glass reaches heat-conducting plate 1 coefficient of expansion value more than 50%; Described heating plate structure 2 is made of porous matter insulating barrier 21, vitreous layer 22, Electric radiant Heating Film 23, described porous matter insulating barrier 21 is by as aluminium oxide, zirconia, silica, zeolite, green stone etc., and the insulating barrier with even hole 211 distributions of the glass powder composition of softening temperature below 800 ℃, described hole 211 accounts for whole porous matter insulating barrier 21 volumes below 20%, use as adjusting the coefficient of expansion, hole diameter is between 0.05 to 10 micron, and is the most suitable with 0.2 to 3 micron; Described Electric radiant Heating Film 23 is by formed oxide electric heating films of electric conducting material such as tin oxide, indium oxide, zinc oxide, has 10
-3The resistance coefficient that Ω cm is above, galvanization can produce Joule heat; Described vitreous layer 22 is to be formed through the fusion of heating by the glass dust of softening point below 800 ℃, it is to be arranged between Electric radiant Heating Film 23 and the porous matter insulating barrier 21, as cohering the solid of Electric radiant Heating Film 23 with porous matter insulating barrier 21, by the compact texture of described vitreous layer 22, also help the making of Electric radiant Heating Film 23.
Described electrode fixed structure 3 is made of with shell fragment 33 metal electrode 31, elargol electrode 32; The bonding jumper of described metal electrode 31 for having high conductivity just like copper, iron nickel, titanium alloy etc., it coheres on Electric radiant Heating Film 23 by elargol electrode 32, and is made of the termination electrode of described Electric radiant Heating Film 23 metal electrode 31, elargol electrode 32; Described shell fragment 33 is the sheet metals for the stainless steel with elastic force, it is to be arranged between metal electrode 31 bottoms and the casing 7, and be provided with an insulating barrier 6 between described shell fragment 33 and the metal electrode 31, the elasticity that has by described shell fragment 33 brings pressure to bear on the metal electrode 31, the stress that produces in the time of can avoiding Electric radiant Heating Film 23 work causes metal electrode 31 contacts bad, and because of being provided with insulating barrier 6 between metal clips 33 and the metal electrode 31, therefore shell fragment 33 can be directly fixed on casing 7 bottoms, as shown in the figure, its fixed form is to screw togather on the pedestal 72 that is arranged on casing 7 bottoms via the screw 71 that prewelding is connected on the casing 7.
Described wiring construction 4, it comprises an electric-conductor 41, described electric-conductor 41 can be heat-resisting conducting strip or coats the lead of heat-resisting material, one end of described electric-conductor 41 is riveting on the metal electrode 31 with rivet 42, the other end is to be riveting in the power supply that is arranged on the casing 7 with rivet 43 via high temperature insulation sheet 44 to follow terminal 73, make metal electrode 31, electric-conductor 41, power supply follow terminal 73 thus and constitute electric conducting state, external power source can be followed terminal 73 input electric-conductors 41 via power supply, and 44 of described high temperature insulation sheets can prevent that electric current from conducting on the casing 7.
See also the efficiency of heating surface comparison diagram of the utility model shown in Figure 4 and other heterogeneity heater, use the input of 1kW electrical power down equally, measure the temperature rising situation of heat-conducting plate surface central authorities, wherein:
Curve A: be to use electric heating (Ni-Cr) line heater to be directly welded on the heat-conducting plate with the heat-conducting plate same thickness of Electric radiant Heating Film, because heating wire is encapsulated in the metal tube through insulating powder (magnesium oxide or aluminium oxide), heat transmits and must can be sent on the heat-conducting plate of heating via insulating powder and metal interface, be distributed to whole metal covering by heat-conducting plate more at last, so temperature rise rate is slower than Electric radiant Heating Film;
Curve B: be the utility model adopt directly see through the efficiency curve of heat-conducting plate heating with Electric radiant Heating Film, it fully demonstrates the rate of heat addition that more traditional electric heating (Ni-Cr) line heater gained curve A has to be increased more than 30%.
Curve C: be in the ceramic material of heat-conducting plate surface coating tool far infrared irradiation, whole temperature rise effect is with not add far-infrared ray material layer gained curve B similar, but because of the thermal diffusivity on pottery surface is low than metal material, therefore records slightly high temperature rise situation.
The above only is a most preferred embodiment of the present utility model, when can not with the scope implemented of qualification the utility model.Promptly the equalization of being done according to the utility model claim generally changes and modifies, and all should still belong in the scope that the utility model patent contains.
Claims (18)
1. an electric heating structure is characterized in that, comprising:
One heat-conducting plate in order to conduction heat energy;
One heating plate structure is arranged on the heat-conducting plate bottom, is made of porous matter insulating barrier, Electric radiant Heating Film, and described Electric radiant Heating Film is an oxide conductive film;
One metal electrode in order to conduction combines with Electric radiant Heating Film;
One electric-conductor, the one end is connected on the metal electrode, and the other end connects a power supply and follows terminal.
2. electric heating structure as claimed in claim 1 is characterized in that: described heat-conducting plate is the metal material with thermal conductivity.
3. electric heating structure as claimed in claim 1 is characterized in that: described heat-conducting plate surface is coated with the far infrared irradiation material.
4. electric heating structure as claimed in claim 1 is characterized in that: described heating plate structure is to follow by interface to follow in heat-conducting plate after strengthening layer is coated in porous matter insulating barrier again.
5. electric heating structure as claimed in claim 2 is characterized in that: described interface is followed the glass that strengthening layer fuses high expansion coefficient after by thermal spraying aluminium oxide or sandblast and is formed.
6. electric heating structure as claimed in claim 5 is characterized in that: the coefficient of expansion of described glass reaches more than 50% of heat-conducting plate coefficient of expansion value.
7. electric heating structure as claimed in claim 1 is characterized in that: described porous matter insulating barrier is by the insulating properties oxide, and the glass powder of softening temperature below 800 ℃ forms.
8. electric heating structure as claimed in claim 1 is characterized in that: described porous matter insulating barrier has and is dispersed in the insulating barrier and occupies the 20% a plurality of holes with lower volume.
9. as 8 described electric heating structures of claim the, it is characterized in that: the described hole diameter is positioned between 0.05 to 10 micron.
10. electric heating structure as claimed in claim 1 is characterized in that: described Electric radiant Heating Film is by the formed oxide electric heating film of electric conducting material.
11. electric heating structure as claimed in claim 1 is characterized in that: described Electric radiant Heating Film is to combine with porous matter insulating barrier by vitreous layer.
12. electric heating structure as claimed in claim 11 is characterized in that: described vitreous layer is that the glass dust of softening point below 800 ℃ forms through the fusion of heating.
13. electric heating structure as claimed in claim 1 is characterized in that: described metal electrode is to combine with Electric radiant Heating Film by the elargol electrode.
14. electric heating structure as claimed in claim 1 is characterized in that: described metal electrode is the bonding jumper with high conductivity.
15. electric heating structure as claimed in claim 1 is characterized in that: described electric-conductor is heat-resisting conducting strip or the lead that coats heat-resisting material.
16. electric heating structure as claimed in claim 1 is characterized in that: it is to be arranged in the casing, is provided with a shell fragment between metal electrode and casing.
17. electric heating structure as claimed in claim 16 is characterized in that: be provided with an insulating barrier between described shell fragment and the metal electrode.
18. electric heating structure as claimed in claim 1 is characterized in that: it is to be arranged on the casing that described power supply is followed terminal, is provided with the high temperature insulation sheet between described electric-conductor and the casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520130250 CN2838195Y (en) | 2005-11-01 | 2005-11-01 | Electric heating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520130250 CN2838195Y (en) | 2005-11-01 | 2005-11-01 | Electric heating structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2838195Y true CN2838195Y (en) | 2006-11-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520130250 Expired - Fee Related CN2838195Y (en) | 2005-11-01 | 2005-11-01 | Electric heating structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102894890A (en) * | 2012-09-16 | 2013-01-30 | 林添耀 | Improvement structure of liquid heater of nonmetal container |
| CN104584682A (en) * | 2012-08-27 | 2015-04-29 | 奥古斯托·文森兹 | System and method for applying of a coating element to a bearing surface |
| CN111121297A (en) * | 2018-11-01 | 2020-05-08 | 东翰生技股份有限公司 | Electric connection fixing structure of heating element |
| CN111491401A (en) * | 2020-04-21 | 2020-08-04 | 苏州好特斯模具有限公司 | Manufacturing process of metal surface thick film heater |
-
2005
- 2005-11-01 CN CN 200520130250 patent/CN2838195Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104584682A (en) * | 2012-08-27 | 2015-04-29 | 奥古斯托·文森兹 | System and method for applying of a coating element to a bearing surface |
| CN104584682B (en) * | 2012-08-27 | 2017-06-09 | 易兹自动化有限公司 | System and method for application element to be applied to support surface |
| CN102894890A (en) * | 2012-09-16 | 2013-01-30 | 林添耀 | Improvement structure of liquid heater of nonmetal container |
| CN111121297A (en) * | 2018-11-01 | 2020-05-08 | 东翰生技股份有限公司 | Electric connection fixing structure of heating element |
| CN111121297B (en) * | 2018-11-01 | 2021-06-18 | 东翰生技股份有限公司 | Electric connection fixing structure of heating element |
| CN111491401A (en) * | 2020-04-21 | 2020-08-04 | 苏州好特斯模具有限公司 | Manufacturing process of metal surface thick film heater |
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Legal Events
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|---|---|---|---|
| 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 |