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Electric heating plate and preparation method thereof

A heating plate and electric heating technology, applied in the direction of ohmic resistance heating, ohmic resistance heating parts, electric heating devices, etc., can solve the problems of unsatisfactory effect, heating efficiency, and affecting heating speed, etc., and achieve production cost Low, increased contact area, reduced friction

Pending Publication Date: 2021-12-14
FUJIAN HUILUN INFANT & CHILD ARTICLES CO LTD
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Problems solved by technology

), while affecting the aesthetics, it also affects the heating speed (increased from the original 13 minutes of heating to boiling to 14-15 minutes)
[0004] In order to realize the wear resistance of the coating without affecting the heating efficiency, the applicant has carried out tests and verifications of many schemes, such as spraying wear-resistant high-temperature ceramic oil or Teflon on the heating surface of the aluminum substrate of the third scheme, or brazing a 0.2-0.3mm stainless steel plate, or high-temperature and wear-resistant high-temperature paint and treatment process, etc., but can not achieve satisfactory results, or fail to meet the requirements of heating efficiency, or the coating is easy to fall off, or the production cost higher

Method used

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  • Electric heating plate and preparation method thereof
  • Electric heating plate and preparation method thereof
  • Electric heating plate and preparation method thereof

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preparation example Construction

[0042] The preparation method of the electric heating heating plate of this embodiment comprises the following steps:

[0043] (1) Prepare spiral grooves with a depth of 0.1mm, a groove pitch of 0.6mm, and a groove width of 0.35mm on the first surface of the aluminum substrate for heating by turning, and the unevenness is less than 0.05mm;

[0044] (2) Preparation of thermal conductive coating mixture: 1) Sodium dodecyl sulfonate is first diluted with water according to the volume ratio of 1:500, 2) An appropriate amount of graphene is added to the diluted liquid for dispersion, 3) The dispersed Graphene liquid is added to the high-temperature resistant ink; 4) The adjusted graphene-containing ink is added with 800nm-sized copper powder, and the thermal conductive coating mixture is calculated by mass percentage: graphene 5%, copper powder 20% , high temperature resistant ink 81%, sodium dodecyl sulfonate + water 4%.

[0045] (3) Use screen printing to coat the thermally cond...

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Abstract

The invention relates to an electric heating plate, and the electric heating plate is characterized in that the electric heating plate comprises an aluminum substrate used for heating; spiral grooves are formed in the first surface, used for being attached to a heating container to play a heat conduction role, of the aluminum substrate, the depth of the spiral grooves ranges from 0.05 mm to 0.2 mm, the groove distance ranges from 0.2 mm to 1 mm, the groove width ranges from 0.1 mm to 0.5 mm, the first surface of the aluminum substrate is covered with a heat conduction coating, paint of the heat conduction coating is embedded in the spiral groove, and the surface of the heat conduction coating is flush with or higher than the first surface of the aluminum substrate. The electric heating disc is simple in structure, low in manufacturing cost and beneficial to reducing the situation that the heating efficiency is affected by abrasion of the heat conduction coating.

Description

Technical field: The invention relates to an electric heating heating plate and a preparation method thereof. The electric heating heating plate can be used for heating glass containers, steam heating appliances or pots and the like. Background technique: The heating plate of the existing technology directly adopts the electric heating tube, or the electric heating tube is fixed with a stainless steel plate, or the heating surface is ground on the surface of the aluminum substrate with an unevenness less than 0.1mm and a smoothness of ▽5 or more (the third option) , or after the third option, apply a thermally conductive coating containing metal powder (the thickness of the coating is generally 5-15um), and then bake it at a high temperature. [0003] For the third solution, the heating surface of the aluminum substrate is easily scratched during use, which affects the heating efficiency; and the above-mentioned fourth solution, because in use, the bottom of the glass will c...

Claims

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Application Information

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IPC IPC(8): H05B3/20H05B3/22H05B3/02A47J36/24A47J36/02A47J27/04
CPCH05B3/20H05B3/22H05B3/02A47J36/2483A47J36/02A47J27/04A47J2027/043
Inventor 程克勇李寿林
Owner FUJIAN HUILUN INFANT & CHILD ARTICLES CO LTD
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