Bundled short-circuit type electric heater

Abstract

The invention relates to the field of electric heating equipment, in particular to a bundled short-circuit type electric heater for heating a non-conducting fluid. The bundled short-circuit type electric heater comprises a housing, wherein the housing is provided with an air inlet and an air outlet, a supporting frame is arranged in the housing and is fixedly connected with an inner wall, the supporting frame is axially provided with a heating tube in the axial direction of the housing, the supporting frame and the heating tube are provided with insulators, and the heating tube is a hollow conducting tube. The bundled short-circuit type electric heater adopts the hollow conducting tube for heating, the hollow conducting tube is a conducting resistor body and is also a heating body, an electricity leakage phenomenon produced due to high temperature of magnesium oxide is avoided, and the service life of the bundled short-circuit type electric heater is prolonged.

Description

technical field [0001] The invention relates to the field of electric heating equipment, in particular to a cluster short-circuit electric heater for heating non-conductive fluid. Background technique [0002] The existing industrial cluster short-circuit electric heater often adopts the structure of circulating cluster short-circuit electric heater, which is a form of heating element electric heating tube, and the purpose is achieved by heating the electric heating wire and magnesium oxide powder inside the electric heating tube through high pressure. The main flaws of this structure are: [0003] 1. Affected by the high-temperature insulation of magnesium oxide, the maximum temperature of the heating medium of the traditional structure generally does not exceed 600°C. [0004] 2. Traditional cluster short-circuit electric heaters are often implemented by increasing the diameter of the container or reducing the load on the heater, which also leads to high costs. Contents...

AI Technical Summary

Problems solved by technology

[0003] 1. Affected by the high-temperature insulation of magnesium oxide, the maximum temperature of the heating medium of the traditional structure generally does not exceed 600°C

[0004] 2. Traditional cluster short-circuit electric heaters are often implemented by increasing the diameter of the container or reducing the load on the heater, which also leads to high costs

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