CN1586372A - Conductive ceramic utensil for electromagnetic stove and its producing method - Google Patents
Conductive ceramic utensil for electromagnetic stove and its producing method Download PDFInfo
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- CN1586372A CN1586372A CN 200410066242 CN200410066242A CN1586372A CN 1586372 A CN1586372 A CN 1586372A CN 200410066242 CN200410066242 CN 200410066242 CN 200410066242 A CN200410066242 A CN 200410066242A CN 1586372 A CN1586372 A CN 1586372A
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Abstract
The conductive ceramic utensil has conductive layer combined to the bottom of the ceramic utensil and insulating layer on the conductive layer. The conductive layer consists of silver oxide, bismuth oxide, lead borate, turpentine, etc. and has thickness of 10-30 micron; and the insulating layer consists of SiO2, PbO2, Fe2O3, CoO, MnO, etc. and has thickness of 4-10 micron. The conductive layer and the insulating layer may be first produced electromagnetically heated copying paper and then adhered directly to the bottom of the ceramic utensil successively, or be produced through printing slurry and sintering at 800-950 deg.c. The conductive layer and the insulating layer have central hole for generating electromagnetic eddy current. The conductive layer and the insulating layer have the shape and size suitable for the bottom of the ceramic utensil, and the ceramic utensil may be terrine, clay pot, teapot, etc.
Description
Technical field
The present invention relates to a kind of conductive ceramic utensil for electromagnetic stove and preparation method, the pottery that relates to or rather, comprise marmite, olla, teapot, they produce electromagnetic eddy in the time of directly making electromagnetic wave pass through the pottery bottom and generate heat, and belong to the daily utensil field.
Background technology
Electromagnetic stove and micro-wave oven are the novel kitchen range of Modern Family's cooking food.They and common naked light kitchen range (for example gas range, liquefied gas cooker and natural gas range) are compared has three big advantages: (1) flames of anger does not have comburant to pollute room air; Needn't light a fire when (2) using, not have flare; (3) no temperature surpasses 300 ℃ high temperature position, Gu and safe and reliable.
The operation principle of electromagnetic stove and micro-wave oven is different.Electromagnetic stove is a principle of utilizing electromagnetic induction, makes the metal pan body produce eddy current in high varying magnetic field, and eddy current is actually a kind of induced-current, produces fuel factor on the metal pan body, thereby reaches the purpose of heating and cooking food, and its operating frequency is 20-30kHz.And the frequency of micro-wave oven is 2450MHz, thus it be work the time make in the food molecule with microwave cycle with the speed of billions of times of per second vibrate back and forth, rubbing produces high heat and reaches heating purposes.
As everyone knows, marmite (or olla) is the porous material made from ceramic material, is characterized in the erosion of acid and alkali resistance and high temperature resistant, through the improvement of modern formulations and firing process, make marmite and the rapid heat cycle performance has had very big raising.Stewing with marmite (or olla) has peculiar flavour, can keep Normal juice, the original flavor of food.But regrettably marmite (or olla) almost can not make the bottom of a pan heating, thereby limit its application so the electric current that produces because of the very big electromagnetic induction of sheet resistance is very little.Especially in winter, functions such as marmite (or olla) is stewed, stewing are difficult to performance.
Equally, with the various ceramic teapots that china clay is made, the wherein famous yixing purple sand teapot that surely belongs to has unique fragrance in infusion tea, be subjected to liking of compatriots deeply.
Can be in the bottom of marmite (or olla) or teapot, paste one deck heating carbon paper or repeatedly brush in the bottom with the method for brushing, form a conductive layer, thereby not only can make existing commercially available marmite (or olla) or the teapot can be on electromagnetic stove, as iron pan, simmer, stew, function such as stir-fry, promptly increase a kind of cooking ware and make food cooked keep original flavor, overcome the iron taste of iron pan and the shortcoming that stainless steel can glue the end.And be the function that teapot increases insulation and heating.
Summary of the invention
The conductive ceramic utensil and the preparation method that provide a kind of electromagnetic stove to use is provided the purpose of this utility model, and described pottery comprises marmite, olla, teapot etc.Conductive layer on the pottery is directly closely contacted with the bottom of marmite, on conductive layer, be covered with insulating protective layer again.Usually conductive layer can be made the electromagnetically induced heating and make carbon copies on the bottom object of marmite, olla or teapot with carbon paper, carbon paper can be made different sizes, and difformity is as circular, square or other shapes.Usually the bottom of marmite or olla is rounded; then the electromagnetically induced layer is annular; the external diameter of annulus gets final product than the base diameter of pottery is smaller; it is no electromagnetically induced that there is the aperture of a 5-20mm centre; promptly do not have conductive layer naked protective layer again, it mainly acts on is to make electromagnetic induction produce eddy current effect.The effect of insulating coating is to prevent the damage to conductive layer of conductive layer oxidation and external force, and the carbon paper external diameter can be from 40 to 300mm, looks the pottery bottom and freely selects, generally needs only more smaller than the base diameter of pottery.Certainly the pottery bottom is generally circular, does not also get rid of square or other shapes.
Conductive layer provided by the invention is mainly formed (quality):
Silver oxide: 52-56% turpentine oil 15-19%
Bismuth oxide: 1-3% castor oil 4-8%
Lead borate: 2-4% rosin surplus
Its mode of production can have two kinds: a kind of manifolding paper mold of making, another kind is a powder-type.
Conductive layer thickness 10-30 μ m, thickness of insulating layer 4-10 μ m, the composition of insulating protective layer (mass percent) is:
SiO
2?20-40， PbO
2?15-30， Fe
2O
3 5-15，
CoO 5-8, MnO
22-5, Na
2The O surplus
The production technology of the conductive ceramic utensil that electromagnetic stove provided by the invention is used is also very simple.At first, make the pottery of required form, comprise marmite, olla, teapot; Its bottom needs by the client can rounded, square or other different shapes.Conductive layer and insulating protective layer and organic film can be made two layers of compound carbon paper form, stick on the bottom of pottery then, enter in the kiln after the first air dry and burn till; Or form slurry with the conductive layer of certain order number (cross 280 mesh sieve particle diameters) and repeatedly be coated in the bottom of a pan by screen printing mode, and there is aperture the centre, treats to cover one deck insulating protective layer more thereon after the air dry, and high temperature burns till in the last 800-950 ℃ of air.Heating rate is porous ceramics vessel heating rate routinely.
This shows that the present invention has and is skillfully constructed, simple in structure very practical again, it has enlarged pottery, and the scope of application of marmite, olla or teapot becomes the important selection of electromagnetic stove with vessel.In fact electromagnetic stove is a kind of safe, free of contamination mode of heating, and heating using microwave still has the release health risk of microwave, and it is doubtful that external recently report microwave destroys food nutrition in addition.The present invention only requires coated marmite (or olla) apparent porosity to get final product near zero.Selected conductive layer component is also uncomplicated but very practical, and can reach 5000 hours average life, and rapid heat cycle is functional.
Description of drawings
Fig. 1 electromagnetic stove provided by the invention structural representation of conduction marmite
The structural representation of the garden ring-type manifolding paper mold that Fig. 2 the present invention adopts
The specific embodiment
Below by specific embodiment, further illustrate substantive distinguishing features of the present invention and obvious improvement.But the present invention only limits to embodiment by no means.
It is the bottom of φ 200mm marmite 1 at base diameter that embodiment 1 please refer to Fig. 1, and with double-deck carbon paper shown in Figure 2, one deck is a conductive layer, and another layer is an insulating barrier, sticks on the bottom of a pan, burns till through 900 ℃ of high temperature then.Form a conductive layer and insulating protective layer in the marmite bottom; the conductive layer 2 that wherein contains Ag contacts with the marmite bottom; insulating barrier 3 in the above, on the one hand protection contains the conductive layer of Ag the masterpiece time spent does not prevent on the other hand that to the scuffing of silver layer Ag is oxidized in the conductive layer outside.Conductive layer thickness is about 24 μ m, and the thickness of insulating protective layer is 6 μ m.
Conductive layer is formed (quality %): silver oxide 56, and lead borate 4, turpentine oil 18, rosin 22, the annular conductive layer is made with organic matter in the batching back, and external diameter is φ 180mm, and middle aperture is φ 15mm;
Insulating barrier consists of SiO
240, PbO
225, Fe
2O
312, CoO 8, MnO
23, Na
2O 12.
Claims (7)
1, the conductive ceramic utensil used of magnetic kitchen range, conductive layer (2) combines with the bottom of pottery (1), and insulating protective layer (3) is arranged on conductive layer (2), it is characterized in that:
(a) described conductive layer mass percent consists of:
Silver oxide: 52-56 turpentine oil: 15-19 castor oil: 4-8
Bismuth oxide: 1-3 lead borate: 2-4 rosin surplus
(b) mass percent of described insulating protective layer consists of:
SiO
2?20-40， PbO
2 15-30， CoO 5-8，
MnO
22-5 Fe
2O
35-15 Na
2The O surplus
2, the conductive ceramic utensil of using by the described electromagnetic stove of claim 1 is characterized in that conductive layer thickness 10-30 μ m, and the insulation protection layer thickness is 4-10 μ m.
3, the conductive ceramic utensil of using by claim 1 or 2 described electromagnetic stoves is characterized in that conductive layer and insulating barrier for circular, and is square or other shapes bottom pottery are suitable, and there are corresponding small sircle hole or square hole in the centre.
4, the conductive ceramic utensil of using by claim 1 or 2 described electromagnetic stoves is characterized in that the middle aperture that 5-20mm is arranged when described conductive layer and insulating barrier are annular, the external diameter 40-300mm of annular.
5, the preparation method of the conductive ceramic utensil of using by the described electromagnetic stove of claim 1 is characterized in that concrete processing step is:
(1) conductive layer and insulating protective layer respectively by claim 1 (a) and (b) preparation of described composition have organic film and make two layers of compound carbon paper form, stick on the pottery bottom; Its thickness guarantees to burn till back conductive layer and thickness of insulating layer;
(2) air dry;
(3) then in 800-950 ℃ of air high temperature burn till.
6, the preparation method of the conductive ceramic utensil of using by the described electromagnetic stove of claim 1 is characterized in that concrete processing step is:
(1) by claim 1 (a) and (b) described composition be mixed with slurry, its particle diameter was 280 mesh sieves;
(2) adopt screen printing mode repeatedly the conductive layer slurry to be coated in the bottom earlier, cover one deck insulating protective layer, air dry after the drying more thereon; The number of times of its brushing is to guarantee that burning till the back conductive layer thickness is 10-30 μ m insulation protection layer thickness;
(3) at last in 800-950 ℃ of air high temperature burn till.
7, the conductive ceramic utensil of using by the described electromagnetic stove of claim 1 is characterized in that described pottery is marmite, olla, teapot; Its bottom is rounded or square.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410066242 CN1586372A (en) | 2004-09-09 | 2004-09-09 | Conductive ceramic utensil for electromagnetic stove and its producing method |
| CNB2005100637010A CN100394876C (en) | 2004-09-09 | 2005-03-28 | Conductive ceramic utensil for electromagnetic range and its preparing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410066242 CN1586372A (en) | 2004-09-09 | 2004-09-09 | Conductive ceramic utensil for electromagnetic stove and its producing method |
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| Publication Number | Publication Date |
|---|---|
| CN1586372A true CN1586372A (en) | 2005-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410066242 Pending CN1586372A (en) | 2004-09-09 | 2004-09-09 | Conductive ceramic utensil for electromagnetic stove and its producing method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102131315A (en) * | 2010-09-28 | 2011-07-20 | 施吉承 | Formula of electrode solution for electro-thermal film heating tube |
| CN102390190A (en) * | 2011-09-22 | 2012-03-28 | 慧智科技（中国）有限公司 | Preparation process of electromagnetic induction heating coating of vessel for induction cooler |
| CN103193463A (en) * | 2013-04-10 | 2013-07-10 | 刘俊杰 | Improved type conductive marmite and manufacturing method thereof |
| CN105611660A (en) * | 2014-11-14 | 2016-05-25 | 贺利氏德国有限责任两合公司 | Method of manufacturing electric induction heating component |
| CN108784294A (en) * | 2017-05-03 | 2018-11-13 | 大陆包装（泰国）有限公司 | Cooking apparatus made of paper for induction furnace |
-
2004
- 2004-09-09 CN CN 200410066242 patent/CN1586372A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102131315A (en) * | 2010-09-28 | 2011-07-20 | 施吉承 | Formula of electrode solution for electro-thermal film heating tube |
| CN102131315B (en) * | 2010-09-28 | 2013-03-06 | 施吉承 | Formula of electrode solution for electro-thermal film heating tube |
| CN102390190A (en) * | 2011-09-22 | 2012-03-28 | 慧智科技（中国）有限公司 | Preparation process of electromagnetic induction heating coating of vessel for induction cooler |
| CN102390190B (en) * | 2011-09-22 | 2014-07-30 | 慧智科技（中国）有限公司 | Preparation process of electromagnetic induction heating coating of vessel for induction cooler |
| CN103193463A (en) * | 2013-04-10 | 2013-07-10 | 刘俊杰 | Improved type conductive marmite and manufacturing method thereof |
| CN105611660A (en) * | 2014-11-14 | 2016-05-25 | 贺利氏德国有限责任两合公司 | Method of manufacturing electric induction heating component |
| CN108784294A (en) * | 2017-05-03 | 2018-11-13 | 大陆包装（泰国）有限公司 | Cooking apparatus made of paper for induction furnace |
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