A water-heating and water-cooling dual-purpose electric
blanket comprises an upper
blanket surface, a lower
blanket surface, a heating layer, a temperature sensor, a
temperature monitoring module, a refrigerating device, a switch and sealing pins. The heating layer comprises a
surface layer, an inner layer and an interlayer, the interlayer is provided with a heating
pipe in which a heating wire is arranged, and a shielding wire is wound around the heating wire; the outer wall of the heating
pipe is made of an insulating material, the heating
pipe is sleeved with a sleeve pipe with a cavity reserved between the heating pipe and the sleeve pipe, and the cavity is filled with
heat transfer liquid; the two ends of the sleeve pipe are connected with three-way pieces in an
insertion mode respectively, the other two joints of each three-way piece are connected with an extension pipe and a tightening cap respectively, the two ends of the heating pipe are plugged by the sealing pins, and the tightening caps are in screw connection with the sealing pins through threads; the extension pipes are connected with the refrigerating device; the heating wire is led out from the sealing pins and connected with a power line, and a
circuit breaker is arranged on the power line; the temperature sensor is arranged on the heating layer and connected to the
temperature monitoring module through a wire, and the
temperature monitoring module is connected with the switch; the switch is connected with an external power supply through a plug. The water-heating and water-cooling dual-purpose electric blanket can perform refrigerating or heating selectively and is
safer to use.