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Sheathing heater,its mfg. method and heater

A heater and sheath technology, applied in the directions of water heaters, fluid heaters, heating element shapes, etc., can solve the problem of long processing steps of sheath heaters, poor mechanical impact resistance of glass sealing materials, and expansion of manufacturing costs, etc. problems, to achieve cheap safety, maintain usability, and simplify the manufacturing process

Inactive Publication Date: 2005-11-16
SAKAE CO LTD +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0010] At this time, since the drying process of magnesia and the glass sealing process are accompanied, not only the processing process of the sheath heater becomes longer, but also the glass frit needs to be heated to a temperature above the softening point for melting and sealing when sealing the glass. In addition, there is a need to check whether it is completely sealed, so not only the manufacturing cost is inflated, but also because the mechanical shock resistance of the glass sealing material is poor, there is a technical issue that needs to be handled carefully

Method used

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  • Sheathing heater,its mfg. method and heater
  • Sheathing heater,its mfg. method and heater
  • Sheathing heater,its mfg. method and heater

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Embodiment approach 1

[0037] figure 2 (a) shows embodiment of the electric water heater to which the sheath heater of this invention was attached.

[0038] In this figure, the electric water heater 50 supports the water storage tank 51 by the water storage tank bracket 52, while the hot water outlet pipe 51a is connected to the upper part of the water storage tank 51, and the water inlet pipe 51b is connected to the lower part thereof. While the sheath heater 20 is arranged in the water tank 51 , the sheath heater 20 is fixed on the outer wall of the water storage tank 51 to heat the water stored in the water storage tank 51 .

[0039] And the reference numeral 55 is in order to heat the heat preservation material for the water storage tank 51 and cover around the water storage tank 51 .

[0040] as figure 2 As shown in (b), in this embodiment, the sheath heater 20 is inserted into the metal pipe 21 while the coil-shaped heating wire 22 connected to the terminal rods 23 and 24 is inserted at bo...

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Abstract

PROBLEM TO BE SOLVED: To provide a sheathed heater with excellent corrosion resistance against local corrosion, of low cost and an excellent manufacturing property.

Description

technical field [0001] The present invention relates to sheath heaters (heating tubes or electric heating tubes) used in various heaters such as electric water heaters, and particularly relates to the improvement of sheath heaters capable of effective bending, their manufacturing methods, and heaters. Background technique [0002] As is well known, in electric water heaters and the like for many years, a method in which a sheath heater is arranged in a storage container and water stored in the storage container is heated by the sheath heater has been adopted. [0003] This kind of sheath heater arranges the coil-shaped heating wire in the metal tube (heater cylinder), and at the same time, fills the metal tube (heater cylinder) with magnesium oxide as insulating powder, and then rolls it into the metal tube (heater cylinder). The above-mentioned metal pipe is formed by forming a reduced-diameter processed portion, and sealing the openings at both ends of the metal pipe with ...

Claims

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Application Information

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IPC IPC(8): H05B3/48F24H1/20H05B3/82
Inventor 青木正之日比野浩一新井启太郎唐泽久
Owner SAKAE CO LTD
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