Liquid heating rod provided with electric heating film heating tube

Abstract

The invention discloses a liquid heating rod provided with an electric heating film heating tube. From inside to outside, the liquid heating rod comprises the electric heating film heating tube, a heat conducting insulating tube, a cavity tube, and an electrode flange, an insulating tube flange and a cavity tube flange which are sleeved together in turn. The heat conducting insulating tube is sleeved outside the electric heating film heating tube with two open ends, and the head end of the heat conducting insulating tube is sealed in the insulating tube flange through an insulating tube sealing ring and a flange sealing ring; the cavity tube is sleeved outside the heat conducting insulating tube, the head end of the cavity tube is opened, the tail end of the cavity tube is closed, the head end is sealed in the cavity tube flange through a cavity tube sealing ring, and a liquid outlet cavity is formed both between the tail end of the cavity tube and the tail end of the heat conducting insulating tube and between the inner side tube wall of the cavity tube and the outer side tube wall of the heat conducting insulating tube; and the electrode flange is provided with a liquid inlet which is communicated with the orifice of the electric heating film heating tube, and the cavity tube flange is provided with a liquid outlet which is communicated with the liquid outlet cavity. With the structure, the liquid heating rod is high in heat efficiency, is energy-saving, is long in service life, and is very safe and reliable.

Description

technical field [0001] The invention relates to a heating device, in particular to a liquid heating rod with an electric heating film heating tube. Background technique [0002] In modern industrial or civilian fields, the rapid heating of water, oil or other liquids can be carried out by various heating elements, but most of the heating elements of existing heating elements use electric heating wires, thermistor heating components or high-temperature ceramic components, etc. , or the safety is difficult to guarantee, or the thermal efficiency is low, and the use cost is high. Although some heating elements also use electric heating film heating tubes to generate heat, which is greatly improved compared with heating wires, etc., but there is a gap in the shell of the heating element, and the electric heating film of the electric heating film heating tube is completely exposed. A large part of the heat energy radiated from the outside is dissipated from the gap in vain. The ...

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Problems solved by technology

[0002] In modern industrial or civilian fields, the rapid heating of water, oil or other liquids can be carried out by various heating elements, but most of the heating elements of existing heating elements use electric heating wires, thermistor heating components or high-temperature ceramic components, etc. , or the safety is difficult to guarantee, or the thermal efficiency is low, and the cost of use is high

Although some heating elements also use electric heating film heating tubes to generate heat, which is greatly improved compared with heating wires, etc., but there is a gap in the shell of the heating element, and the electric heating film of the electric heating film heating tube is completely exposed. A large part of the heat energy radiated from the outside is dissipated from the gap in vain. The thermal efficiency is not high, which causes a lot of waste. At the same time, the temperature of the shell is high, which cannot be touched by hands. The exposed electric heating film also has the risk of electric shock accidents. The safety is poor. In addition, the surface temperature of the electrothermal film is relatively high, which is often burned out and the service life is not long. These need to be further improved

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