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A ceramic heater

A ceramic heater and particle size technology, applied in ceramic products, heating element materials, other household appliances, etc., can solve the problems of low heating efficiency, cracks in the pot body, easy cracking, etc., and achieve good thermal shock resistance and heat transfer. Uniform and good dispersion effect

Active Publication Date: 2020-07-17
湖南妙能电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a disadvantage of ceramic pot soup, that is, if cold water is added in the middle of the soup, it may cause cracks in the pot body
[0003] Nowadays, electric rice cookers are often used to cook soup, but the inner pot body is made of metal, which cannot achieve the effect of ceramic soup
If a ceramic pot body is used as the inner container of the rice cooker, there is an unsafe hidden danger of easy cracking
Moreover, the current electric rice cookers are all equipped with a heating plate at the bottom of the pot. The heat transfer performance of the ceramic pot is far worse than that of the metal pot, and its heating efficiency is very low, which will greatly delay the soup cooking time.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A ceramic heater, which is composed of the following raw materials in parts by weight: Al with a particle size of 150-200 microns 2 o 3 : 50 parts; SiO with a particle size of 80-100 microns 2 : 10 parts; MgO with a particle size of 50-60 microns: 8 parts; Si with a particle size of 30-40 microns 3 N 4 : 5 parts; Y with a particle size of 10-20 microns 2 o 3 : 4 parts; AlN with a particle size of 500-600 nanometers: 2 parts; pre-treated graphene with a particle size of 50-200 nanometers: 1 part;

[0034] The method of described pretreatment graphene is: the hydroxyethyl hexahydro-s-triazine that quality is graphene 3% joins the acetone solution that concentration is 3wt% together with graphene, ultrasonic dispersion 50 minutes under the situation of stirring, then Dry to powder. The preparation method of the ceramic heater, the specific steps are as follows:

[0035] (1) After all raw materials are mixed, adding weight is the dehydrated alcohol of these raw mater...

Embodiment 2

[0040] A ceramic heater, which is composed of the following raw materials in parts by weight: Al with a particle size of 150-200 microns 2 o 3 : 55 parts; SiO with a particle size of 80-100 microns 2 MgO: 15 parts; MgO with a particle size of 50-60 microns MgO: 10 parts; Si with a particle size of 30-40 microns 3 N 4 : 8 parts; Y with a particle size of 10-20 microns 2 o 3 : 6 parts; AlN with a particle size of 500-600 nanometers: 4 parts; pre-treated graphene with a particle size of 50-200 nanometers: 2 parts.

[0041] The method of described pretreatment graphene is: the hydroxyethyl hexahydro-s-triazine that quality is graphene 4% joins the acetone solution that concentration is 4wt% together with graphene, under the situation of agitation ultrasonic dispersion 60 minutes, then Dry to powder. The preparation method of the ceramic heater, the specific steps are as follows:

[0042] (1) After all raw materials are mixed, adding weight is the dehydrated alcohol of these...

Embodiment 3

[0047] A ceramic heater, which is composed of the following raw materials in parts by weight: Al with a particle size of 150-200 microns 2 o 3 : 65 parts; SiO with a particle size of 80-100 microns 2 : 20 parts; MgO with a particle size of 50-60 microns: 12 parts; Si with a particle size of 30-40 microns 3 N 4 : 10 parts; Y with a particle size of 10-20 microns 2 o 3 : 7 parts; AlN with a particle size of 500-600 nanometers: 5 parts; pre-treated graphene with a particle size of 50-200 nanometers: 3 parts;

[0048] The method for pretreating graphene is as follows: add 5% hydroxyethylhexahydro-s-triazine and graphene into an acetone solution with a concentration of 5 wt%, and ultrasonically disperse for 50 to 80 minutes while stirring , and then dried into powder. The preparation method of the ceramic heater, the specific steps are as follows:

[0049] (1) After all raw materials are mixed, adding weight is the dehydrated alcohol of these raw materials 40%, and weight is...

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Abstract

The invention relates to a ceramic heater which comprises the following raw materials in parts by weight: 50-65 parts of Al2O3 in grain size of 150-200 microns, 10-20 parts of SiO2 in grain size of 80-100 microns, 8-12 parts of MgO in grain size of 50-60 microns, 5-10 parts of Si3N4 in grain size of 30-40 microns, 4-7 parts of Y2O3 in grain size of 10-20 microns, 2-5 parts of AlN in grain size of 500-600 nanometers and 1-3 parts of pretreated graphene in grain size of 50-200 nanometers. The ceramic heater not only has excellent heat transferring performance but also has a heat-insulating effect and excellent thermal shock resistance, and can keep a stable structure under a sudden cold or hot environment.

Description

technical field [0001] The invention relates to the technical field of heatable ceramics, in particular to a ceramic heater with excellent thermal shock resistance. Background technique [0002] Soup making is a traditional nutritious meal preparation method in my country, and it is generally necessary to use a ceramic pot to make soup. However, there is a disadvantage of ceramic pot soup, that is, if cold water is added in the middle of the soup, it may cause cracks in the pot body. [0003] Nowadays, electric rice cookers are often used to boil soup, but the internal pot body is made of metal, which cannot achieve the effect of ceramic soup. If the inner container of the electric rice cooker is made with a ceramic pot body, there is an unsafe hidden danger of easy cracking. Moreover, the current electric rice cookers are all equipped with a heating plate at the bottom of the pot. The heat transfer performance of ceramic pots is far worse than that of metal pots, and its ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/00C04B35/10H05B3/14
CPCC04B35/10C04B38/0041C04B2235/3206C04B2235/3225C04B2235/3418C04B2235/3865C04B2235/3873C04B2235/425C04B2235/5427C04B2235/5436C04B2235/96C04B2235/9607H05B3/14
Inventor 陆小荣王超
Owner 湖南妙能电器有限公司