Energy-saving explosion-proof water and electricity separated electric heating tube

A technology of electric heating tube and heating film, which is applied in water heaters, fluid heaters, lighting and heating equipment, etc., can solve hidden dangers and other problems, and achieve the goals of improving safety, reducing heat transfer inhomogeneity, and enhancing boiling heat transfer Effect

Active Publication Date: 2017-03-22
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fill the quartz glass tube with explosion-proof purification particles: on the one hand, the contact part between the particles and the surface of the glass tube can form an effective vaporization core, completely solving the hidden danger of the glass tube bursting

Method used

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  • Energy-saving explosion-proof water and electricity separated electric heating tube
  • Energy-saving explosion-proof water and electricity separated electric heating tube

Examples

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Effect test

Embodiment 1

[0021] Such as figure 1 As shown, this embodiment includes: a base quartz glass tube 4, a metal heating film 6 coated on the outer surface of the quartz glass tube, and a high temperature resistant heat insulating material 11 wrapped on the outer surface of the metal heating film.

[0022] The fluid area in the matrix quartz glass tube 4 is filled with various explosion-proof purification particles 3, and the contact point between the particles and the quartz glass tube can form a boiling vaporization core well and destroy the thermal boundary layer to enhance boiling heat transfer; at the same time Reduce the cross-sectional flow area of ​​the flow channel, increase the fluid flow rate, and have the characteristics of a fluidized bed, thereby reducing the heat transfer inhomogeneity on the flow cross-section of the quartz tube, enhancing heat transfer and reducing the flow instability of the boiling two-phase flow, thus effectively Maximize the heat transfer heat flux density...

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Abstract

The invention relates to an energy-saving explosion-proof water and electricity separating type electric heating tube. The energy-saving explosion-proof water and electricity separating type electric heating tube comprises a quartz glass tube as a matrix, a metal heating film plated on the external surface of the quartz glass tube, explosion-proof purification particles filled in the quart glass tube and a high temperature resistant insulating material covering the outer surface of the metal heating film. According to the energy-saving explosion-proof water and electricity separating type electric heating tube disclosed by the invention, the explosion-proof purification particles are added to the quartz glass tube, on the one hand, a special runner structure is provided for a fluid area in the tube to further realize enhancement of heat transfer and prevent local overheating of the quartz glass tube and the flow instability in the boiling process from happening, and thus the quartz tube is well prevented from cracking; on the other hand, water is purified and the water quality is regulated according to characteristics of water qualities in different areas. In the meantime, the high temperature resistant insulating material covers the outer surface of the metal heating film, so that the heat loss of the electric heating tube is reduced and the energy-saving characteristic is achieved.

Description

technical field [0001] The invention relates to a technology in the field of daily necessities, in particular to an energy-saving explosion-proof water and electricity separation electric heating tube with high heat flux. Background technique [0002] The heating element of the heater is one of the key parts of the heater. The heating components with high power density can greatly shorten the time for the heater to boil water, which provides great convenience for production and life. [0003] The heating efficiency of the traditional heater is relatively low, such as the general cast aluminum heater, the maximum heat flux density is about 0.05MW / m 2 . At present, the heater power of water dispensers on the market generally ranges from 100W to 500W, and the heat flux is not high. Under the existing technical conditions, the heating time of a water dispenser with a rated power of 420W is about 10 minutes. [0004] Some existing water dispensers use glass tubes as heating co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H1/10F24H9/18
Inventor 龚圣捷梅勇陈书琦顾汉洋王驰马卫民
Owner SHANGHAI JIAO TONG UNIV
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