Ceramic electric heater for water tank

A technology of electric heater and electric heating element, which is applied in the mechanical field, can solve the problems of coating peeling, low heat load, large size of electric heating tube, etc., and achieve the effect of uniform water temperature, good performance and high thermal efficiency

Inactive Publication Date: 2014-06-18
TORBOS ADVANCED CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The metal tubular electric heater is filled with thermally conductive insulating powder between the conductive wire and the metal shell. Due to the gap between the powder, its thermal conductivity is limited, so the thermal load it can withstand is low, the size of the electric heating tube is large, and the metal surface is easily corroded , can cause electric shock hazard in severe cases
There are also some electric heaters on the market that are coated with an anti-rust coating on the surface of the metal tube, which can prevent corrosion to a certain extent and protect the electric heating tube. The layer falls off, so there are still hidden dangers that threaten safety

Method used

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  • Ceramic electric heater for water tank
  • Ceramic electric heater for water tank

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Experimental program
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Effect test

Embodiment 1

[0021] Such as figure 1 As shown, the ceramic electric heater for the water tank includes a take-up housing, and an electric heating element 1 is inserted into the take-up housing. The electric heating element 1 is a ceramic heat conductor, and the ceramic heat conductor is specifically made of silicon nitride. The power is 400W ~ 10KW. The number of electric heating elements 1 using silicon nitride ceramics is usually one, or 2 to 4 in parallel.

[0022] The electric heating element 1 of the silicon nitride ceramic is that the conductive wire is encapsulated in the dense silicon nitride ceramic, and the silicon nitride ceramic is not only used as a heat conducting layer, but also as an insulating layer. Because silicon nitride ceramics have excellent insulation properties and thermal conductivity, and can resist the corrosion of acid and alkali solutions.

[0023] Specifically, the electric heating element 1 can adopt three forms, one is that the electric heating element 1 ...

Embodiment 2

[0030] Such as figure 2 As shown, the structure and principle of this embodiment are basically the same as that of Embodiment 1, the difference is that:

[0031] External threads are provided on the outer wall of the interface of the package base 4 , internal threads are provided on the inner wall of the interface of the back cover 5 , and the package base 4 and the back cover 5 form a threaded connection. This kind of thread assembly belongs to the flange type package seat 4, and the flange type package seat 4 with pipe thread has pipe thread specifications including 3 / 4 inch, 1 inch, 1.5 inch and 2 inch.

[0032]The ceramic electric heater for water tank uses silicon nitride ceramic electric heating element as the heating part, combined with over-temperature protection device, and is packaged in an easy-to-install plug or flange with pipe thread, which can be conveniently and firmly installed on the water tank. And high-density and high-strength silicon nitride has good th...

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Abstract

The invention provides a ceramic electric heater for a water tank. The ceramic electric heater solves the problems that because heat loads borne by a prior metal electric heating pipe are small, the metal electric heating pipe is prone to electric conduction and leads to dangers. The ceramic electric heater for the water tank comprises a take-up shell, an electric heating element is a ceramic thermal conductor and is inserted into the take-up shell in a stretching mode, two contacts connected with wires are arranged at the insertion end of the electric heating element, one wire is connected with a temperature switch in series, the other wire is connected with a temperature fuse in series, and the wires stretch out of the take-up shell in a penetrating mode. Because the ceramic electric heating element made of silicon nitride serves as a heating component and is combined with an over-temperature protection device, the ceramic electric heater has the advantages of being safe, reliable, high in thermal efficiency, even in water temperature, small in size, resistant to corrosion, long in service life and the like, and is an optimal heat source of a new generation of safe and energy-saving hot water solutions.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to an electric heating device, in particular to a ceramic electric heater for a water tank. Background technique [0002] The water tank electric heater widely used in the market is mainly metal tubular electric heater now. The metal tubular electric heater is filled with thermally conductive insulating powder between the conductive wire and the metal shell. Due to the gap between the powder, its thermal conductivity is limited, so the thermal load it can withstand is low, the size of the electric heating tube is large, and the metal surface is easily corroded , it may cause electric shock hazard in severe cases. There are also some electric heaters on the market that are coated with an anti-rust coating on the surface of the metal tube, which can prevent corrosion to a certain extent and protect the electric heating tube. Layers fall off, so there are still hidden dangers that th...

Claims

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Application Information

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IPC IPC(8): H05B3/78
Inventor 赫伟
Owner TORBOS ADVANCED CERAMICS
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