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A high-thermal-conductivity ceramic inner container used for an electric cooker

A technology of high thermal conductivity ceramics and electric rice cookers, which is applied in applications, household appliances, and other household appliances. It can solve the problems of faster heating speed of electric rice cookers and slow heating of ceramic inner pots, so as to shorten the boiling time and speed up the transfer. High speed and thermal shock resistance

Active Publication Date: 2017-06-06
FOSHAN BAIRUI NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem of slow heating of the ceramic inner container, the present invention proposes a high thermal conductivity ceramic inner container for an electric rice cooker, in which the thermal conductivity of the ceramic matrix is ​​enhanced by adding high thermal conductivity carbon fibers into the ceramic matrix, and the high thermal conductivity carbon fiber has no Arranged in sequence, overlapping each other to form a heat conduction network, the heat is quickly transferred from the heating plate to the surface of the inner tank through the heat conduction network formed by carbon fibers, so that the heating speed of the rice cooker becomes faster

Method used

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  • A high-thermal-conductivity ceramic inner container used for an electric cooker
  • A high-thermal-conductivity ceramic inner container used for an electric cooker

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Experimental program
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Effect test

Embodiment 1

[0020] Weigh the ceramic substrate according to the mass ratio: 35% spodumene, 15% petalite, 12% quartz, 25% kaolin, 10% magnesia clay, 3% niobium oxide, add 20% water and 4% polyethylene Pyrrolidone, ball milled in a high-energy ball mill for 12 hours, sieved to remove iron; according to the relationship of ceramic powder: carbon fiber volume ratio 90:10, the weight of carbon fiber that should be added was converted, and an appropriate amount of carbon fiber was weighed and added to the ceramic slurry. Stir in the mixer for 12 hours, then undergo rough smelting, aging, refining, roll forming to form a green body, then dry, spray glaze, put the glazed green body into a kiln with a reducing atmosphere, and use 15 The temperature is raised at a rate of ℃ / min, fired at 1250℃ for 4 hours, kept at 1050℃ for 30 minutes, and cooled with the furnace to form a finished product.

Embodiment 2

[0022] Weigh the ceramic substrate according to the mass ratio: 55% spodumene, 10% petalite, 5% quartz, 20% kaolin, 8% magnesia clay, 2% niobium oxide, add 20% water and 5% polyethylene Pyrrolidone was ball milled in a high-energy ball mill for 12 hours, sieved to remove iron; the weight of carbon fibers that should be added was converted according to the relationship of ceramic powder: carbon fiber volume ratio 80:20, and an appropriate amount of carbon fibers was weighed and added to the ceramic slurry. Stir in a high-speed mixer for 12 hours, then undergo rough smelting, aging, refining, and roll forming to form a green body, then dry, brush and apply glaze, and then put the glazed green body into a kiln with a reducing atmosphere , heating up at a rate of 10°C / min, firing at 1300°C for 5 hours, holding at 1100°C for 30 minutes, and cooling naturally to form a finished product.

Embodiment 3

[0024] Weigh ceramic substrate raw materials according to volume ratio: 70% alumina ceramic powder, ZnO-B 2 o 3 -SiO 2 Add 30% glass sintering aid, add 20% ethanol and mill in a high-energy ball mill for 12 hours, sieve to remove iron; calculate the added weight of carbon fiber according to the volume ratio of ceramic raw materials: carbon fiber = 80:20, and weigh an appropriate amount of carbon fiber to add Put it into the ceramic slurry, stir it in a high-speed mixer for 12 hours, then press filter, refine, and roll to form a green body, spray the glaze after drying, and put the glazed green body into a kiln with a reducing atmosphere , heating at a rate of 10°C / min, firing at 1100°C for 2 hours, holding at 900°C for 30 minutes, and cooling with the furnace to form a finished product.

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Abstract

The title of the invention is a high-thermal-conductivity ceramic inner container used for an electric cooker. The invention discloses a high-thermal-conductivity ceramic inner container and relates to the field of electric cookers. The ceramic inner container is characterized in that a high-thermal-conductivity carbon fiber material is added into a ceramic matrix, the carbon fiber material is arranged in the ceramic matrix in a disordered manner and is overlapped to form a heat conducting network, heat transferred from a heating disc reaches the inner wall of the inner container through the ceramic matrix and the carbon fiber network, the carbon fiber network is adopted as a high-speed passage for heat transfer, and the heating speed of the electric cooker is higher. Compared with common ceramic inner containers, the heating and temperature rising speed of the ceramic inner container is higher, low-temperature soaking time for cooking rice and other foods is short and rice taste is good.

Description

technical field [0001] The invention relates to an inner pot of an electric rice cooker, in particular to a high thermal conductivity ceramic inner pot for an electric rice cooker. Background technique [0002] Rice cookers on the market now use ceramic inner pots, which are better in terms of wear resistance and corrosion resistance than metal inner pots. Patent CN 201410723874.X discloses a preparation method of a far-infrared ceramic inner pot for an electric rice cooker. The ceramic inner pot has a far-infrared radiation function after being heated, and has a certain penetrating heating effect, so that the rice is heated evenly and transparently. , better taste. However, the thermal conductivity of the far-infrared ceramic liner is an order of magnitude lower than that of the metal liner, and its heating efficiency is lower than that of the metal liner. The cooking time of food is much longer, resulting in long soaking time at low temperature when steaming rice and othe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/13C04B33/24C04B35/80
Inventor 王双喜张丹欧阳雪琼
Owner FOSHAN BAIRUI NEW MATERIAL TECH CO LTD
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