Microwave heater for heating liquid and/or gases

Abstract

The invention relates to a microwave heater for heating liquid and / or gases, which consists of a heating chamber, a microwave generator and a temperature measurement and control system, wherein the heating chamber consists of three functional layers, namely an external wave-reflecting heat-conducting metal shell, a medium wave absorbing and heating layer and an internal wave-transmitting thermal insulation layer. The microwave heater is characterized in that: after passing through the thermal insulation layer, microwaves emitted by the microwave generator are absorbed by the wave absorbing and heating layer for heating; and heat is transmitted outward to the metal shell which transmits the heat to surrounding liquid and / or gases to realize the heating of flowing or static liquid and / or gases at last. The microwave heater unit with the structure can be used singly or a plurality of microwave heater units are used in serial and / or parallel connection. The microwave heater has the advantages of simple structure, low manufacturing cost, high thermal efficiency, easy replacement, maintenance and carrying and high safety due to non-contact heating, and can be used as a heat source in various fields such as large and small shower water heaters, hydrothermal heating, hot air heating and industrial production.

Description

technical field [0001] The invention relates to a heater, in particular to a microwave heater used for heating liquid and / or gas, which belongs to the technical field of microwave heating. The heater can quickly heat the flowing or still liquid and / or gas around it, and can be used as a heat source in various fields such as shower water heater, hydrothermal heating, hot air heating, water dispenser, cooking and industrial production. Background technique [0002] At present, there are four main types of heaters used for heating fluid (including liquid and / or gas) according to the way they generate heat, namely electric heating (such as: electric heating tube), gas-fired, coal-fired or solar-powered. It has its limitations: electric heating generally belongs to contact heating, and there are hidden dangers of electric leakage (for example: electric heating tube rupture), and the safety is not good; gas-fired and coal-fired heating have the risk of gas leakage and poisoning, a...

AI Technical Summary

Problems solved by technology

[0002] At present, there are four main types of heaters used for heating fluid (including liquid and / or gas) according to the way they generate heat, namely electric heating (such as: electric heating tube), gas-fired, coal-fired or solar-powered. It has its limitations: electric heating generally belongs to contact heating, and there are hidden dangers of electric leakage (for example: electric heating tube rupture), and the safety is not good; gas-fired and coal-fired heating have the risk of gas leakage and poisoning, and it is not easy to achieve precise control ; Solar heaters are generally bulky and are greatly affected by climate and temperature

When microwaves are used to directly heat flowing water, most people use reciprocating glass tubes to increase the absorption time and area of ​​water for microwaves. However, the brittleness of glass tubes directly affects the installation, use and maintenance of heaters. There are many disadvantages, and the glass tube will also absorb microwaves to a certain extent

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