Wirelessly operated heating device of hot water dispenser

Abstract

A heating device of an instant hot water dispenser is provided with an inlet, an outlet, a PCB, a solenoid valve, a flow meter, a first heating unit, and a second heating unit. The PCB includes a first transformer for supplying DC to the first heating unit, a second transformer for supplying DC to the second heating unit, a receiver for receiving pulses of IR light from a remote control, and a microcontroller electrically connected to the PCB for controlling the solenoid valve, sensing a flow rate measured by the flow meter, and communicating with the receiver so that an operation of the remote control wirelessly commands the microcontroller to control electric current to the first and second heating units.

What is claimed is: 
     
         1 . A heating device of a hot water dispenser comprising, in combination:
 a remote control;   an inlet;   an outlet;   a printed circuit board (PCB);   a solenoid valve;   a flow meter;   a first heating unit; and   a second heating unit;   wherein the inlet, the solenoid valve, the flow meter, the first heating unit, the second heating unit, and the outlet are in fluid communication sequentially;   wherein on the PCB is electrically connected to both the solenoid valve and the flow meter;   wherein the first heating unit includes a heating element and a winding fluid channel;   wherein the second heating unit includes a heating element, a winding fluid channel, and a temperature sensor for sensing temperature of water flowing out of the winding fluid channel thereof and sending the sensed temperature to the microcontroller; and   wherein the PCB includes a first transformer for supplying direct current (DC) to the first heating unit, a second transformer for supplying DC to the second heating unit, a receiver for receiving pulses of infrared (IR) light from the remote control, and a microcontroller electrically connected to the PCB for controlling the solenoid valve, sensing a flow rate measured by the flow meter, and communicating with the receiver so that an operation of the remote control wirelessly commands the microcontroller to control electric current supplied from the first transformer to the heating element of the first heating unit and control electric current supplied from the second transformer to the heating element of the second heating unit.