Liquid heating device

Abstract

A liquid heating device includes a liquid storage barrel, a heating barrel, a discharging tube and a controller. The liquid storage barrel stores a liquid to be heated, and is provided with a control valve at its bottom part. The heating barrel is disposed at a space below the liquid storage barrel, and is provided with an entrance at its top end. The controller is connected to the control valve, and controls operations of the control valve to allow the liquid in the liquid storage barrel to pass through the control valve and enter the heating barrel through the entrance. An internal capacity of the liquid storage barrel is greater than an internal capacity of the heating barrel. The heating barrel includes an electric heating structure mainly formed by an electric heating element and an electric conducting line. The discharging tube is a tube connected to the heating barrel, and discharges the heated liquid from the heating barrel.

What is claimed is: 
     
         1 . A liquid heating device, comprising a liquid storage barrel, a heating barrel, a discharging tube and a controller; wherein:
 the liquid storage barrel is a container for storing a liquid to be heated, and is provided with a control valve at a bottom part thereof;   the heating barrel is disposed at a space below the liquid storage barrel, and is provided with an entrance at a top end thereof;   the controller is connected to the control valve, and controls operations of the control valve to allow the liquid stored in the liquid storage barrel to pass through the control valve and flow into the heating barrel through the entrance;   an internal capacity of the liquid storage barrel is greater than an internal capacity of the heating barrel;   the heating barrel comprises an electric heating structure, the electric heating structure is mainly formed by an electric heating element and an electric conducting line, and generates heat energy for heating the liquid in the heating barrel;   the discharging tube is a tube connected to the heating barrel, and discharges the heated liquid from the heating barrel; and   the controller is formed by an electromechanical element, is electrically connected to the electric heating structure, controls heating temperature and time of the electrical heating structure, the discharging tube is provided with a drain element, and the controller is connected to the drain element to control operations of the drain element.   
     
     
         2 . The liquid heating device according to  claim 1 , wherein a conduit is disposed between the liquid storage barrel and the heating barrel, and is in communication with the liquid storage barrel and the heating barrel; the control valve is disposed at the conduit to accordingly allow the liquid stored in the liquid storage barrel to flow into the heating barrel. 
     
     
         3 . The liquid heating device according to  claim 2 , wherein a pre-heating structure is provided at an exterior of the conduit; the pre-heating structure is mainly formed by the electric heating structure and the electric conducting line, and generates heat energy for heating the liquid passing through the conduit; the controller is electrically connected to the pre-heating structure to control the heating temperature and time of the pre-heating structure. 
     
     
         4 . The liquid heating device according to  claim 1 , wherein the electric heating element is a resistive heating element. 
     
     
         5 . The liquid heating device according to  claim 4 , wherein the electric heating element is an electric heating plate or an electric heating coil. 
     
     
         6 . The liquid heating device according to  claim 1 , wherein the electric heating element is an electromagnetic heating element. 
     
     
         7 . The liquid heating device according to  claim 6 , wherein the electric heating element is an electromagnetic coil. 
     
     
         8 . The liquid heating device according to  claim 1 , wherein the controller comprises a programmable controller or a microprocessor. 
     
     
         9 . The liquid heating device according to  claim 1 , wherein the drain element is a pump. 
     
     
         10 . The liquid heating device according to  claim 1 , wherein the drain element is a tube valve.