Porcelain composite cooker inner bag and preparation method thereof
Technical field
A kind of method that the present invention relates to inner-tube structure of cooker and make this composite inner liner.
Background technology
Electric cooker is the requisite cooker of family cooking, be mainly used in cooking and steaming dish etc., existing electric cooker generally adopts electric hot tray heating, so the inner bag of electric cooker must adopt aluminium alloy to make so that the heat of electric hot tray can be delivered to inner bag rapidly goes.There is following shortcoming in traditional electric cooker: 1, the aluminium alloy of inner bag aluminium element that may be absorbed by the body in culinary art and use procedure, according to Recent study, show, and too much absorption aluminium can be unhealthful; 2, the heat due to electric hot tray is by bottom, to be directly delivered to the exterior bottom of inner bag, and be swiftly delivered to bottom inner side of liner, therefore when cooking, inner bag bottom occurs that meal is burnt, for solving the burnt problem of meal, need to add non-sticking lining in the inner side of inner bag, but in the chemical substance of long-term use meeting wear out failure and existing non-sticking lining, to health, also there is certain influence in non-sticking lining.For addressing the above problem, there is on the market the inner bag that adopts potter's clay to make, as boccaro electric cooker etc., the hardness of first this ceramic inner container of electric cooker is poor, rough surface and because the heat conductivility of potter's clay is poor, during heating, easily form bottom temp high, food burnt and tightly be bonded at the bottom of a pan, be difficult to remove.Relative potter's clay, the container of existing porcelain has higher hardness, better heat conductivility and, porcelain container can form enamel smooth and that hardness is higher by the mode of glazing on its surface, can prevent from scratching on the one hand, can form antistick layer by enamel on the other hand, cannot not reach stickyly effect., existing porcelain container is used for manufacturing some containers of life, does not find that it is for the manufacture of the inner bag of cooker.
Summary of the invention
The object of this invention is to provide a kind of porcelain composite cooker inner bag, the surface that can touch while making food materials culinary art is porcelain internal layer, health environment-friendly more, compound skin makes porcelain internal layer can obtain heating effect more uniformly simultaneously, can also guarantee that in addition porcelain internal layer is difficult for broken.
The present invention also provides the preparation method of porcelain composite cooker inner bag, is easy to make, simultaneously effectively combination between different material layer.
The present invention realizes above-mentioned purpose like this:
Porcelain composite cooker inner bag, adopt china clay to fire the porcelain cooker internal layer forming, it is outer that the interior table of porcelain cooker internal layer forms enamel, the appearance of porcelain cooker internal layer is compounded with the middle heat conductive layer that adopts aluminum or aluminum alloy formable layer, middle heat conductive layer appearance is compounded with stainless steel top layer, the open-mouth of described porcelain cooker internal layer is provided with flanging, and stainless steel top layer extends to flanging and by flanging and flanging fastening.
Wherein, described middle heat conductive layer covers the outer bottom of porcelain cooker internal layer and the partial lateral wall of porcelain cooker internal layer, between all the other lateral walls of porcelain cooker internal layer and stainless steel top layer, forms hollow layer.
A kind of preparation method of porcelain composite cooker inner bag, comprises following processing step:
A. adopt china clay to form by a firing porcelain cooker internal layer, and table form enamel skin within it;
B. according to the outer table skeleton of porcelain cooker internal layer by stainless steel materials punch forming stainless steel top layer;
C. first porcelain cooker internal layer and stainless steel top layer are carried out after preheating, again the aluminum or aluminum alloy of melting is poured in stainless steel top layer, then porcelain cooker internal layer is set in stainless steel top layer, and make to leave the gap that middle heat conductive layer is suitable between the two, finally treat that aluminum or aluminum alloy cooled and solidified forms middle heat conductive layer;
D. the edge on stainless steel top layer is carried out to flanging, make flanging and flanging fastening.
Wherein, the second flanging that first described stainless steel top layer forms main part and adapt with the flanging of porcelain cooker internal layer according to the outer table skeleton punching press of porcelain cooker internal layer, after middle heat conductive layer casting complete, by crimping machine, outer field the second flanging of stainless steel is scrolled up to formation flanging, and with flanging fastening.
The another kind of preparation method of porcelain composite cooker inner bag, comprises following processing step:
A. adopt china clay to form by a firing porcelain cooker internal layer, and table form enamel skin within it;
B. according to the outer table skeleton of porcelain cooker internal layer by aluminum or aluminum alloy plate stamping moulding middle heat conductive layer;
C. according to the outer table skeleton of porcelain cooker internal layer by stainless steel materials punch forming stainless steel top layer;
D. middle heat conductive layer is sleeved on outside porcelain cooker internal layer, and then stainless steel top layer is sleeved on outside middle heat conductive layer and the edge on stainless steel top layer is carried out to flanging, make flanging and flanging fastening;
E. by the bottom-heated of porcelain composite cooker inner bag to the fusing point of middle heat conductive layer or above rear cooling.
The invention has the beneficial effects as follows: the porcelain cooker internal layer that employing china clay is fired forms enamel by the mode of glazing at interior table, enamel can have higher hardness on the one hand, what prevent that use procedure from causing scratches, enamel surface smoother on the other hand, can form antistick layer, prevent that cooking process food materials from burning the bottom that sticks on inner bag.Middle heat conductive layer adopts aluminum or aluminum alloy compound, to there is good heat-transfer effect due to aluminium and aluminium alloy, being compound in porcelain cooker internal layer makes heat can be delivered to rapidly each position outward, and be unlikely to concentrate and bottom, and aluminium and aluminium alloy cost relatively cheap, and there is lower fusing point, be easy to processing.Stainless steel top layer has higher intensity and toughness; can play a very good protection to porcelain cooker internal layer; even after careless collision; can not injure porcelain cooker internal layer yet; if while there is crackle in porcelain cooker internal layer; well fixing effect also can be played in stainless steel top layer, prevents that porcelain cooker internal layer from splitting completely.Because making to adopt different materials, porcelain cooker internal layer, middle heat conductive layer and stainless steel top layer make, it is fixing for this three can better be merged, the present invention also provides two kinds of preparation methods, simple and the desired making apparatus of technique is simple, be particularly useful for manufacturing in batches porcelain composite cooker inner bag, be by by after the aluminum or aluminum alloy melting of middle heat conductive layer, after the middle heat conductive layer of melting is solidified, just can be good at respectively at ceramic cooker internal layer and stainless steel top layer compound.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described:
Fig. 1 is cross section view of the present invention.
The specific embodiment
With reference to Fig. 1, porcelain composite cooker inner bag, adopt china clay to fire the porcelain cooker internal layer 1 forming, it is outer that the interior table of porcelain cooker internal layer 1 forms enamel, the appearance of porcelain cooker internal layer 1 is compounded with the middle heat conductive layer 2 that adopts aluminum or aluminum alloy formable layer, middle heat conductive layer 2 appearances are compounded with stainless steel top layer 3, and the open-mouth of described porcelain cooker internal layer 1 is provided with flanging 4, and stainless steel top layer 3 extends to flanging 4 and passes through flanging 5 and flanging 4 fastenings.The porcelain cooker internal layer 1 that employing china clay is fired forms enamel by the mode of glazing at interior table, enamel can have higher hardness on the one hand, what prevent that use procedure from causing scratches, enamel surface smoother on the other hand, can form antistick layer, prevent that cooking process food materials from burning the bottom that sticks on inner bag.Middle heat conductive layer 2 adopts aluminum or aluminum alloy compound, to there is good heat-transfer effect due to aluminium and aluminium alloy, being compound in outside porcelain cooker internal layer 1 makes heat can be delivered to rapidly each position, and be unlikely to concentrate and bottom, and aluminium and aluminium alloy cost relatively cheap, and there is lower fusing point, be easy to processing.Stainless steel top layer 3 has higher intensity and toughness; can play a very good protection to porcelain cooker internal layer 1; even after careless collision; can not injure porcelain cooker internal layer 1 yet; if while there is crackle in porcelain cooker internal layer 1; well fixing effect also can be played in stainless steel top layer 3, prevents that porcelain cooker internal layer 1 from splitting completely.
The present invention considers and prevents from using porcelain cooker internal layer 1 poor thermal conductivity and occur heat to be only gathered in cooker bottom surface and cause bottom surface easily to burn problem, added middle heat conductive layer 2 to make the porcelain cooker internal layer 1 that middle heat conductive layer 2 covers can both obtain heat to address the above problem, but in actual use, be not that whole porcelain cooker internal layer 1 all needs to obtain heat, middle heat conductive layer 2 covers the partial lateral wall of the outer bottom of porcelain cooker internal layer 1 and the porcelain cooker internal layer 1 of close outer bottom for this reason.Because the heat conductivility of porcelain cooker internal layer 1 is poor, therefore it has good heat insulation effect, cook rear porcelain cooker internal layer 1 and can within the longer time, keep higher temperature, but make like this user be difficult to grip, between all the other lateral walls of porcelain cooker internal layer 1 and stainless steel top layer 3, form hollow layer 6 for this reason, that is to say that middle heat conductive layer 2 does not extend to the top of cooker side, the heat of porcelain cooker internal layer 1 can only be delivered to stainless steel top layer 3 with the flanging 5 on stainless steel top layer 3 and bottom and the bottom outside face of porcelain cooker internal layer 1 by middle heat conductive layer 2 by the flanging 4 of porcelain cooker internal layer 1 so, and hollow layer 6 transferring heats are less, therefore stainless steel top layer 3 hollow layer 6 places temperature can be relatively low, be convenient to grip.
Below, the preparation method of detailed description porcelain composite cooker inner bag.
The first is to adopt the method for cast to make, specifically comprise following processing step: first adopt china clay to make embryonic type, fired moulding porcelain cooker internal layer 1, in order to make porcelain cooker internal layer 1 there is not sticky effect, need to be in the inner surface glazing of porcelain cooker internal layer 1 to form enamel layer.Simultaneously, according to the outer table skeleton of porcelain cooker internal layer 1, by stainless steel materials punch forming stainless steel top layer 3, during punch forming stainless steel top layer 3, need first the second flanging 7 that forms main part and adapt with the flanging 4 of porcelain cooker internal layer 1 according to the outer table skeleton punching press of porcelain cooker internal layer 1.Then, first porcelain cooker internal layer 1 and stainless steel top layer 3 are carried out after preheating, the porcelain cooker internal layer 1 that in the time of can preventing from pouring into a mould so on the one hand, the aluminum or aluminum alloy of melting directly contacts low temperature causes it to break, the aluminum or aluminum alloy that can prevent on the other hand melting solidifies rapidly and causes middle heat conductive layer 2 to produce defects, after preheating, again the aluminum or aluminum alloy of melting is poured in stainless steel top layer 3, then porcelain cooker internal layer 1 is set in stainless steel top layer 3, and make to leave the gap that middle heat conductive layer 2 is suitable between the two, can guarantee that like this middle heat conductive layer 2 thickness are relatively even, certainly can above-mentioned steps complete corresponding step by automation equipment, namely first porcelain cooker internal layer 1 and stainless steel top layer 3 clampings are carried out to preheating on fixture, when the aluminum or aluminum alloy of melting is poured into the gap that equipment behind stainless steel top layer 3 is automatically inserted in stainless steel top layer 3 by porcelain cooker internal layer 1 and controls both, finally treat that aluminum or aluminum alloy cooled and solidified forms middle heat conductive layer 2, so just formed middle heat conductive layer 2, because the aluminum or aluminum alloy of melting and the inner surface on porcelain cooker internal layer 1 outer surface and stainless steel top layer 3 can both well soak, therefore solidify rear middle heat conductive layer 2 just can with both good combinations.Finally, the edge on stainless steel top layer 3 is carried out to flanging 5, make flanging 5 and flanging 4 fastenings, flanging 5 can make three layers can better fix on the one hand, but also can seal hollow layer 6, prevents that dirt from entering.
The second is the method making in melting intermediate layer again after employing moulding, and the method is more prone to realize, and does not need to be equipped with smelting furnace.Specifically comprise following processing step: the moulding process on porcelain cooker internal layer 1 and stainless steel top layer 3 is identical with the first preparation method, and middle heat conductive layer 2 is by the moulding of aluminum or aluminum alloy plate stamping according to the outer table skeleton of porcelain cooker internal layer 1.Then, middle heat conductive layer 2 is sleeved on outside porcelain cooker internal layer 1, and then stainless steel top layer 3 is sleeved on outside middle heat conductive layer 2 and the edge on stainless steel top layer 3 is carried out to flanging 5, make flanging 5 and flanging 4 fastenings.Finally, by the bottom-heated of porcelain composite cooker inner bag to the fusing point of middle heat conductive layer 2 or above rear cooling, heating means generally can adopt the method for electromagnetic induction heating, although also can make also heating simultaneously of stainless steel in heating process, but because stainless fusing point is more much higher than aluminum or aluminum alloy, therefore can not impact stainless steel top layer 3.