Water-cooling pre-heating heating body

Abstract

A water-cooling pre-heating heating body comprises a heating pipe, a water outlet pipe and electrode clamping hoops. The heating pipe is a quartz pipe, the outer surface of the heating pipe is coated with an electric heating coating, the two ends of the electric heating coating are coated with electrodes, the electrode clamping hoops are arranged on the electrodes, and the heating pipe is connected with the water outlet pipe. The water-cooling pre-heating heating body is characterized in that the heating pipe is installed in a radiating shell, the radiating shell comprises at least one heating cavity and a pre-heating cavity, the two ends of the heating pipe are fixed to the inside of the heating cavity of the radiating shell through sealing rings, a water inlet of the pre-heating cavity is communicated with a water inlet pipe, and a water outlet of the pre-heating cavity is communicated with the heating pipe. The water-cooling pre-heating heating body is compact in structure and convenient to install; by means of a cold water pre-heating mode, heat radiation emitted outside by the heating pipe is collected, water is pre-heated, energy is saved, heat power is improved, the problem of temperature rising of the heating pipe is effectively solved, the power density of an electrothermal film can be increased and the size of the heating pipe is reduced.

Description

technical field [0001] The invention relates to a heating device, in particular to a water-cooled preheating type heating body. Background technique [0002] Quartz electric heating tubes are widely used as heating devices on instant water heaters and kettles. Its heating elements such as the patent No. CN03225162.9 "quick heating electric water heater heating tube assembly". Its structure is one or more quartz glass tubes, which are inserted between the upper and lower water guide grooves. Both ends of the outer surface of the quartz glass tube are coated with silver paste electrodes, and an electric heating film is coated between the two electrodes. When the two electrodes are energized Finally, the electrothermal film heats up, conducts heat through the quartz glass tube, and rapidly heats the water flowing through the glass tube. [0003] The electric heating tube of this structure is installed in a grounded metal fixing frame on the product. The metal fixing frame pla...

AI Technical Summary

Problems solved by technology

In this patent, since the heating pipe and the insulating pipe are completely surrounded by water, it is impossible to install a temperature sensor to sense the temperature change of the heating pipe. When the water in the heating pipe is short of water, the heating power cannot be automatically cut off, which may easily cause damage to the heating pipe.

Moreover, the heating pipe is immersed in water, which is prone to water leakage, causing short circuit of the heating pipe, causing failure, and poor safety.

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