A combined type electric heating tube formed by a heater having a nonmetal tube arranged outside a metal tube and a sinking injection molded connecting piece

Abstract

A combined electric heating tube with a heater with a non-metallic tube outside the metal tube and a sinking injection molded connector, the electric heating tube consists of a heater (5) with a non-metallic tube outside the metal tube and a sinking connector ( 7) Combination of two parts; the heater (5) with a non-metallic tube outside the metal tube is equipped with a heating wire (3) in the metal tube, and is insulated from the metal tube with magnesium oxide powder (4), and the non-metallic tube is installed outside the metal tube. The tube (9) leads out the rod at the same end; the sunken injection molding connector (7) is made by injection molding of non-metallic materials, and a hole for installing a tubular heater is formed on it, and the hole deviates from the installation center line of the connector by a certain amount. Distance, to ensure that in actual use, the electric heating tube sinks in the water tank, the inner hole of the injection molded connector (7) is shaped with a step (8), and there is a seal ( 2).

Description

technical field [0001] The invention relates to electric heating tubes, mainly related to electric water heaters, central water heaters, air source heat pump water heaters, solar water heaters, electric boilers, water dispensers, water boilers, small kitchen treasures and other water heating devices, straight non-metallic tubular heaters immersed in water Combined electric heating tube with sunken injection molding connector. Background technique [0002] Existing metal tubular electric heating elements (or tubular heaters, or electric heating tubes, the same below) used in water heating devices are 100% in accordance with the technical standard GB / T23150-2008 "Tubular Heaters for Water Heaters" or JB / T4088 -1999 "Tubular Electric Heating Elements for Daily Use" The tubular electric heating element is "a metal tube as the shell, an alloy heating wire as the heating element, one or two ends have a lead rod, and the metal tube is filled with dense magnesium oxide powder for in...

AI Technical Summary

Problems solved by technology

[0002] Existing metal tubular electric heating elements (or tubular heaters, or electric heating tubes, the same below) used in water heating devices are 100% in accordance with the technical standard GB / T23150-2008 "Tubular Heaters for Water Heaters" or JB / T4088 -1999 "Tubular Electric Heating Elements for Daily Use" The tubular electric heating element is "a metal tube as the shell, an alloy heating wire as the heating element, one or two ends have a lead rod, and the metal tube is filled with dense magnesium oxide powder for insulation Medium, to fix the heating element; "This kind of metal shell electric heating element is completely immersed in water. After use, it will form scale, reduce heating efficiency, and make water electrified after corrosion breakdown, which is a world problem for 140 years; Application Nos. 201520816869.3 and 201510688413.8 and Application Nos. 201520996947.2 and 201510860091.0 have improved the heating elements, and this application will be supplemented

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