A silicon nitride instant heating element

Abstract

The invention discloses a silicon nitride instant heating element, which comprises a heat generating part and a silicon nitride heat conducting body connected with the heat generating part. The inside of the heat insulation shell is covered with a heat insulation layer, and the heat insulation shell is equipped with a spray system for spraying the surface of the silicon nitride heat conductor. The descaling system, after the scale is generated, is sprayed after heating, and then expands with heat and contracts with cold to break the scale. Compared with other descaling methods, this method is simpler and does not need to add substances, and is easy to operate. The spray cylinder can move back and forth under the action of water pressure, so that it can spray when needed, and isolate when not needed, and the nozzle will rotate when spraying, so as to cover the entire silicon nitride heat conductor and descale more comprehensively.

Description

technical field [0001] The invention relates to the technical field of electric heating elements, in particular to a silicon nitride instant heating element. Background technique [0002] With the development of social urbanization, technology, and humanization, instant electric water heaters are increasingly used in the daily lives of ordinary people, such as instant water dispensers, instant faucets, and instant water heaters. These instantaneous heating devices bring great convenience to people, save energy, save time, and are convenient, time-saving and energy-saving. [0003] Instant hot water equipment usually has a common problem, that is, after a period of use, scale will be formed on the internal heating parts. The scale has poor thermal conductivity, which will lead to deterioration of heat transfer on the heating surface, thereby wasting fuel or electricity. Moreover, when the scale adheres to the heating surface of the thermal equipment, it will endanger the saf...

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Problems solved by technology

[0003] Instant hot water equipment usually has a common problem, that is, after a period of use, scale will be formed on the internal heating parts. The scale has poor thermal conductivity, which will lead to deterioration of heat transfer on the heating surface, thereby wasting fuel or electricity. Moreover, when the scale adheres to the heating surface of the thermal equipment, it will endanger the safe and economical operation of the thermal equipment, because the thermal conductivity of the scale is very poor, which hinders heat transfer and causes uneven heating, which may cause pipe bursts. Thermal hot water equipment will optimize the material and structure to reduce the generation of scale. For example, silicon nitride is used as the heating element, because silicon nitride is resistant to scale and heats up quickly, better replacing the traditional metal heating element, but although it is resistant to scale, However, only by slowing down the speed of scale generation, scaling will still result in a decrease in thermal efficiency after a certain period of time

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