Liquid heating device

Abstract

The invention discloses a heating device, in particular a liquid heating device which is suitable for and can be effectively applied in various household electrical appliances, such as coffee machines, espresso machines, instant hot water machines, tea machines, dishwashers or similar kettle appliances. The liquid heating device is characterized by comprising an outer tube body, a heating tube, a plurality of spiral lines, an input tube and an output tube, wherein the heating tube is arranged in the outer tube body for heating with current to produce heat, the spiral lines are arranged between the outer tube body and the heating tube for guiding water flow and preventing deformation of the heating tube, the input tube and the output tube are respectively arranged at two ends of the outer tube body, wherein the spiral lines are regularly arranged at intervals and are wound on the heating tube. A small amount of water can be heated rapidly, and the liquid heating device has the advantages of high heating efficiency, simple structure, low cost, high yield, energy conservation, water conservation and safe use.

Description

technical field [0001] The present invention relates to a heating device, in particular to a liquid that is suitable and effective for use in various household appliances such as coffee machines, espresso machines, instant hot water machines, tea machines, dishwashers, or similar water heating appliances heating equipment. Background technique [0002] Many methods of heating water use electrical energy to be converted into thermal energy for heating. For example, brazing heating plates or printed resistance heaters are heated by thermal energy. Among them, heating tubes are more commonly used, which have the advantages of high heat transfer efficiency and low cost. At present, various heating appliances appearing on the market, such as electric kettles, coffee machines, steam pressurized espresso machines, dishwashers and other electrical appliances, mainly include the following three structures for heating water: the first is an internal welding The structure of the tube-...

AI Technical Summary

Problems solved by technology

At present, various heating appliances appearing on the market, such as electric kettles, coffee machines, steam pressurized espresso machines, dishwashers and other electrical appliances, mainly include the following three structures for heating water: the first is an internal welding The structure of the tube-mounted container with a heating tube is used to use flowing water to heat through the tube. For example, coffee filters mainly use this type of heater, but since most of the heat is dispersed into the air after heating, so The heating efficiency of this structure is not high; the second is the structure of a stainless steel container brazed with heat pipes below. For example, electric kettles mainly use this type of heater, but there is also the defect of the first structure, that is, large Part of the heat is dispersed into the air, and the heating efficiency is not high. In addition, the heating time depends on the amount of water stored in the water container; the third type is a boiler structure with heating tubes inside. Although this structure has a good Heat transfer efficiency, but heating takes a long time, and if the heating tube is replaced by resistance heating wire or screen printing film heating, although the heating efficiency is high, it requires a specific method of production and is expensive

Images