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Full-ceramic heating body

A ceramic heating element and heating layer technology, applied in electric heating devices, ohmic resistance heating, heating element materials, etc., can solve problems such as poor temperature control accuracy, and achieve reliable life, accurate and reliable temperature, rapid response and real-time changes. Effect

Pending Publication Date: 2022-06-28
CHONGQING LE MARK CERAMIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an all-ceramic heating element to solve the problem of poor temperature control accuracy

Method used

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  • Full-ceramic heating body
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] like figure 1 As shown, an all-ceramic heating body, from the inside to the outside, is an inner conductive layer 1, an inner resistance layer 2, an inner insulating layer 3, an outer resistance layer 4, an outer conductive layer 5 and an outer insulating layer 6. The inner conductive layer 1 is located in the innermost part of the electric heating body, the center of the bottom end of the inner conductive layer 1 is the center electrode welding place 8, the inner resistance layer 2 is divided into two sections, the diameter of the lower end is larger than the diameter of the upper end, and the lower end of the inner resistance layer 2 is wrapped. Outside the inner conductive layer 1; the inner insulating layer 3 is divided into three sections, the diameter of the middle section is larger than the diameter of the upper section, the diameter of the lower section is larger than the diameter of the middle section, and the upper section is wrapped outside the upper section ...

Embodiment 2

[0031] With reference to the all-ceramic heating element of Example 1, the difference is:

[0032] The weight ratio of the ceramic materials of the outer resistance layer 4 is: silicon nitride: silicon carbide: aluminum oxide: yttrium oxide: lanthanum oxide: molybdenum disilicide=660:260:70:80:20:700.

[0033] The weight ratio of the ceramic materials of the internal resistance layer 2 is: silicon nitride: silicon carbide: aluminum oxide: yttrium oxide: lanthanum oxide: molybdenum disilicide=550:110:50:55:10:550.

[0034] The weight ratio of the ceramic material of the outer insulating layer 6 is: silicon nitride: aluminum oxide: yttrium oxide: molybdenum disilicide=680:70:80:700.

[0035] The weight ratio of the ceramic materials of the inner insulating layer 3: silicon nitride: aluminum oxide: yttrium oxide: lanthanum oxide: molybdenum disilicide=680:45:80:20:50.

[0036] The weight ratio of the ceramic materials of the outer conductive layer 5: silicon nitride: aluminum ox...

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Abstract

The invention relates to the technical field of electric heating bodies, and discloses a full-ceramic heating body which comprises an outer heating layer, an inner insulating layer and an inner heating layer, the inner heating layer, the inner insulating layer and the outer heating layer are sequentially arranged from inside to outside, and the outer heating layer is electrically connected with the inner heating layer. The weight ratio of ceramic materials of the outer resistance layer and the inner resistance layer is as follows: silicon nitride: silicon carbide: aluminum oxide: yttrium oxide: lanthanum oxide: molybdenum disilicide = (500-700): (100-300): (40-80): (50-90): (0-30): (500-800), the matching values of the outer resistance layer and the inner resistance layer are different, heating and temperature sensing are integrated, the outer resistance layer and the inner resistance layer are not influenced by the external environment, heating or ignition is reliable, and the service life is reliable.

Description

technical field [0001] The invention relates to the technical field of electric heating bodies, in particular to an all-ceramic heating body. Background technique [0002] Electric heaters are widely used in heating or ignition equipment, such as instant dual-mode water heaters, automobile exhaust gas oxidation sensors, industrial equipment heating devices, ultrasonic heating elements, mold heating and insulation devices, medical equipment heaters, air heaters, small heating appliances, etc. etc., while the traditional ceramic heating element is mostly based on alumina ceramic with high thermal conductivity, and the conductive, heat-resistant and refractory material is used as the inner electrode to form a heating circuit. , has the advantages of corrosion resistance, high temperature resistance, uniform temperature, long life and so on. [0003] At present, the traditional ceramic heating element generates temperature by itself when energized, and uses the calibration valu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/14H05B3/02
CPCH05B3/141H05B3/02H05B3/0019
Inventor 雷彼得
Owner CHONGQING LE MARK CERAMIC TECH CO LTD
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