CN202158594U - Induction cooker - Google Patents
Induction cooker Download PDFInfo
- Publication number
- CN202158594U CN202158594U CN2011201197235U CN201120119723U CN202158594U CN 202158594 U CN202158594 U CN 202158594U CN 2011201197235 U CN2011201197235 U CN 2011201197235U CN 201120119723 U CN201120119723 U CN 201120119723U CN 202158594 U CN202158594 U CN 202158594U
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- China
- Prior art keywords
- thick film
- substrate
- electromagnetic oven
- film coil
- coil
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- Expired - Lifetime
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Abstract
An induction cooler belongs to the technical filed of cookers and comprises a panel. The panel comprises a substrate and a thick film coil matched with the substrate. The substrate is made of non-metal materials, and the thick film coil is formed by printing thick film conductor slurry on the substrate in single-layer or multi-layer spiral mode through a screen printing method. The thickness of the thick film coil is within 5mm so that ultra thin design of the induction cooker can be facilitated. The induction cooker can reduce skin effect, is small in inner resistance, reduces temperature rise and is capable of improving heat efficiency by about 5%.
Description
Technical field
The utility model belongs to a kind of electromagnetism cooking apparatus technical field, relates in particular to a kind of electromagnetic induction part that is used for the electromagnetic oven stove and accessory.
Background technology
Along with the development of electromagnetic technique, electromagnetic oven obtains consumer's approval as emerging machine for kitchen use product because of advantages such as it have energy-conservation, cleaning, and firing rate is fast in recent years.Coil panel is the important power output element of electromagnetic oven, and coil panel is to be wound on the winding bracket equably by a circle enamel-covered wire.Each circle enamel-covered wire is again to be assembled by the enamel-covered wire of some sub-threads to form, and in order to satisfy the needs of inductance, it is thicker that each strand enamel-covered wire all can be done.Under the electromagnetic oven duty, when alternating current through per share enamel-covered wire, electric current will be tending towards conductive surface and flow through, this phenomenon is kelvin effect.When electric current conducts in conductor with higher frequency, can be gathered in the conductor top layer, but not be evenly distributed in the sectional area of whole conductor.Frequency is high more, and kelvin effect is remarkable more.Kelvin effect can cause resistance to increase; Thereby causing coil heating serious, a large amount of heat energy causes temperature drift in the stove, has reduced the efficiency of heating surface of coil panel; Also increase the heat radiation cost simultaneously; With the circuit board stacked system, make IGBT and bridge heap and other electronic components influenced by coil panel on the electromagnetic oven mounting structure, temperature drift has quickened the aging of electromagnetic oven electric elements.
This traditional coil disc of electric stove, volume is very big, is unfavorable for the lightening design of product, and serious heating simultaneously can increase the heat radiation cost.The coil panel volume is very big, is unfavorable for lightening design.
Summary of the invention
The purpose of the utility model is to provide a kind of tradition of can cancelling to process the electromagnetic oven of lead drum by materials such as copper, and the utility model electromagnetic oven coil can improve its Q value, reduce kelvin effect, reduces the coil panel temperature rise, the raising thermal efficiency.
To above essential technique problem, the corresponding technical solution scheme of the utility model is:.
A kind of electromagnetic oven; Comprise panel; It is characterized in that: this panel comprises substrate and [y1] thick film coil of combining with it, and said substrate is that nonmetallic materials are processed, and the thick film coil is formed on said substrate by the method single or multiple lift of thick film conductor paste through serigraphy spirally.The utility model electromagnetic oven structure is simple, is convenient to realize large-scale production, and the further microminaturization of suitable size, good reliability, and D.C. resistance is little, and inductance value is less, is more suitable for high frequency and uses.
The inductance value of said thick film coil is more than or equal to 120uH, and its Q value is more than or equal to 6.
Further, said thick film conductor paste is noble metal slurries such as gold, silver, platinum or palladium slurry, preferred silver paste.This thick film conductor paste generally is made up of main component such as metal powder, binding agent and organic carrier.
Said thick film coil is for adopting multi-sheet printed and range upon range of closing mutually insulated forms.Carry out multi-sheet printedly with electrocondution slurry,, form coil then through after the high-temperature roasting.
Further, the top of substrate or arranged beneath have magnetic stripe also can below the coil panel of the utility model printing, increase magnetic stripe, improve inductance value, promote the overall performance of coil panel, also can prevent magnetic field radiation and leakage.
Said substrate is selected from alumina ceramics, forsterite ceramics, zircon porcelain or Dong Yingshi porcelain.
Compare the electromagnetic oven of prior art, the utlity model has following technique effect:
1. help the electromagnetic oven ultrathin design, the thickness of conventional coil dish is at least 15mm, also needs design lines disc carrier support coils, and weight is about 1KG, and the utility model thick film magnetic inductive film thickness is in the 5mm.
2. reduction kelvin effect, internal resistance is little, reduces temperature rise, can promote the thermal efficiency about 5%.
3. reduce the influence of coil panel temperature to other devices, increase the service life, the caloric value of drum can reduce 10%, thereby can reduce rotation speed of the fan, reduces wind and makes an uproar.
Description of drawings
Fig. 1 is the structural representation of the utility model thick film coil.
The specific embodiment
Below through the specific embodiment the utility model is further described:
Embodiment 1
A kind of electromagnetic oven; Comprise panel 1; This panel 1 comprises substrate and [y2] thick film coil of combining with it, and substrate is that nonmetallic materials are processed, and the thick film coil is as shown in Figure 1; The thick film coil is formed on said substrate by the method single or multiple lift of thick film conductor paste through serigraphy spirally, and profile in the form of sheets.
Its manufacturing approach following steps:
(1) printing ground floor conductive silver paste on substrate, high temperature sintering:
(2) printing first insulating barrier and high temperature sintering;
Repeat above-mentioned steps printing last layer, greater than 120uH, the Q value of thick film coil is greater than 6 up to the inductance value that satisfies the thick film coil.
Present embodiment, this thick film coil be for adopting multi-sheet printed and range upon range of closing mutually insulated forms, i.e. several layers silver slurry layer 3 and insulating barrier 2 overlapping forming.The silver slurry number of turns of thick film coil is preferably 17 circles, and live width is 3mm, and the gap is 1.5mm between the line; Silver is starched and is printed 10 layers altogether during printing, need separate with insulating barrier between every layer of silver slurry, and only needing basic insulation to get final product all silver slurry layers between the silver slurry layer should be overlapping; Total resistance is less than or equal to 0.5 ohm, and the electrode diameter of lead end is φ 8.Above-mentioned serigraphy thick film adopts prior art processes, guarantees that silver paste can not come off.
Form the planar coil layout drawing according to the plane layout method, produce the thick film template that serigraphy is used with the photomechanical production method again.It is 96% and 85% aluminium oxide ceramics that substrate can be selected content, also can adopt beryllium oxide ceramics.
The internal resistance of thick film coil is little and do not take the electromagnetic oven inner space, and its thickness can accomplish in the 5mm, can be with the electromagnetic oven porcelain plate as substrate, and conductive silver paste is printed on the porcelain plate of electromagnetic oven.
Thick film conductor paste generally is made up of noble metals such as gold, silver, platinum, palladium and low-melting glass, and these noble metal powders are dispersed in furnishing pasty state in the organic binder resin, is imprinted on the ceramic substrate through screen printing forme then.Through high-temperature firing, organic binder resin is burnt, and remaining nearly all is pure noble metal, and driving fit is on substrate owing to vitreous effect.Form the thick film coil with the screw type coiling behind this bed thickness film conductor slurry sintering, also can form the thick film coil by the continuous broken line of screw type.
The technical process of serigraphy is to be fixed on silk screen on the press frames earlier, masterplate is attached on the silk screen again, perhaps on silk screen, is coated with photoresists; Directly make masterplate in the above; At the substrate of putting off the net, be poured on thick film conductor paste on the silk screen then, be pressed into mesh to slurry with scraper plate; Bite on substrate, form needed thick film figure.Silk screen commonly used has stainless (steel) wire and nylon wire, also uses the polytetrafluoroethylene (PTFE) net sometimes.
The prescription of silver paste has a lot, and because of the difference of manufacturer is different, but the conductance of satisfied at least 1.6730 * 10-6 Ω cm gets final product.
Multiturn coil with the multiply enamel-covered wire of the thick film coil of above-mentioned making replacement prior art electromagnetic oven after stranded with concentric manner coiling from inside to outside, after the energising, high frequency electric produces the sealing magnetic line of force through the thick film coil, and the pot height speed on it is generated heat.Can promote the thermal efficiency about 5% through detecting the thermal efficiency than the prior art electromagnetic oven, the temperature rise of electromagnetic oven furnace chamber is low, and the electromagnetic oven of comparing with the enamel-covered wire coil is described, the utility model electromagnetic oven heat radiation cost can reduce.
In sum; After those of ordinary skill in the art reads the utility model file; Need not creative mental labour according to the technical scheme of the utility model and technical conceive and make other various corresponding conversion scheme, all belong to the scope that the utility model is protected.
Claims (7)
1. electromagnetic oven; Comprise panel; It is characterized in that: this panel comprises substrate and the thick film coil that combines with it, and said substrate is that nonmetallic materials are processed, and the thick film coil is formed on said substrate by the method single or multiple lift of thick film conductor paste through serigraphy spirally.
2. electromagnetic oven according to claim 1 is characterized in that the inductance value of said thick film coil is more than or equal to 120uH, and its Q value is more than or equal to 6.
3. electromagnetic oven according to claim 1 is characterized in that said thick film conductor paste is gold, silver, platinum or palladium slurry.
4. like the said electromagnetic oven of claim 3, it is characterized in that said thick film conductor paste is a silver paste.
5. electromagnetic oven according to claim 1 is characterized in that, said thick film coil is for adopting multi-sheet printed and range upon range of closing mutually insulated forms.
6. electromagnetic oven according to claim 1 is characterized in that the top of said substrate or arranged beneath have magnetic stripe.
7. electromagnetic oven according to claim 1 is characterized in that said substrate is selected from alumina ceramics, forsterite ceramics, zircon porcelain or Dong Yingshi porcelain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201197235U CN202158594U (en) | 2011-04-21 | 2011-04-21 | Induction cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201197235U CN202158594U (en) | 2011-04-21 | 2011-04-21 | Induction cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202158594U true CN202158594U (en) | 2012-03-07 |
Family
ID=45766233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201197235U Expired - Lifetime CN202158594U (en) | 2011-04-21 | 2011-04-21 | Induction cooker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202158594U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482570A (en) * | 2014-12-17 | 2015-04-01 | 贵州黔唐电器有限责任公司 | Noise-reduction induction cooker |
-
2011
- 2011-04-21 CN CN2011201197235U patent/CN202158594U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482570A (en) * | 2014-12-17 | 2015-04-01 | 贵州黔唐电器有限责任公司 | Noise-reduction induction cooker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120307 |