Non-metal inner spray tube electric heater

Abstract

The invention relates to an electric heater for heating liquid, in particular to a non-metal inner spray tube electric heater which can be surrounded by the liquid and conduct heating continuously. The non-metal inner spray tube electric heater comprises a circular back cover quartz tube, electricity conductive heating film is arranged on the inner wall of the tube, the two ends of the film are positioned out two electrode positions or three electrode positions through halving in the longitudinal direction, two electrode components or three electrode components are attached to the film, and high-temperature wires are led out of the tube, components which make contact with electricity and a temperature control component on the inner wall are all arranged in the tube to be sealed and insulated, and the other end of the tube is provided with a screw fitting to seal and fix the circular back cover quartz tube to form an inner spray tube electric heating pipe fitting with a complete appearance and capable of being arranged and used. A circular tube shell is arranged outside the inner spray tube electric heating pipe fitting, a circular top inner thread tooth screw fitting, an inner thread tooth screw seat and the like are matched with the circular tube shell, a straight tube is arranged at the lower end of the circular tube shell and taken as a liquid inlet connector, and the upper end of the circular tube shell and the circular top screw fitting are integrated to lead out of an inclined straight tube which is taken as a liquid outlet connector. By means of the material appearance and the structural features of the non-metal inner spray tube electric heater, continuous heating on flow liquid can be conducted, the safety performance is high, scaling formation is not prone to occurring, the universality is strong, the anti-corrosion property is achieved, the heat efficiency is high, and the functions of over-temperature protection and detachable cleaning are achieved.

Description

technical field [0001] The invention relates to an electric heater for heating liquid, in particular to a non-metallic inner nozzle electric heater which can be surrounded by liquid and can be continuously heated. Background technique [0002] At present, metal electric heating tubes are mainly used for liquid heating, and there are many defects in long-term use: they are easily eroded by free oxygen in water, scaled, and corroded, which seriously affects the safety and thermal efficiency of use. In addition, it is more difficult to use in acidic liquids. [0003] CN201533417U (2010-7-21) discloses a carbon fiber quartz heating tube. Although its body is non-metallic, it is straight tubular, and the power leads are drawn at two ends, which is not suitable for liquid heating. [0004] Application number: 2010205237896 (2010-09-08) patent: non-metallic liquid heater. It is a section of quartz tube coated with a heat-generating film on its outer wall, and electrodes are arran...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome many defects of the existing liquid electric heater scheme, the present invention provides a non-metallic inner nozzle electric heater

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