Heating device of electric hot-water bag

Abstract

The invention discloses a heating device of an electric hot-water bag. The heating device of the electric hot-water bag comprises a water injection plug, an electric heating tube, an over-temperature fuse and a temperature control switch. The water injection plug is internally provided with the electric heating tube. The electric heating tube comprises a metal tube and a resistance wire. The metal tube is internally provided with the resistance wire and a leading-out rod at the front end of the resistance wire. A magnesium oxide powder compacted layer is arranged outside the resistance wire and the leading-out rod. One end of the leading-out rod is connected with a copper needle which is used for connecting with a power line, and the other end is connected with the over-temperature fuse and the resistance wire. The end of the resistance wire is connected with the temperature control switch. The water injection plug is provided with a plug hole and a connecting screw thread. The water injection plug is furthermore connected with a timer. The over-temperature fuse is arranged in the magnesium oxide powder compacted layer, thereby realizing high stability. The magnesium oxide powder compacted layer has advantages of isolating air, reducing feedback time and realizing high heat conductivity and true and effective temperature information. Furthermore the heating device of the electric hot-water bag has advantages higher intelligence, better energy-saving performance, better environment-friendly performance and higher applicability.

Description

technical field [0001] The invention belongs to the technical field of electric heating, and in particular relates to an electric hot water bag heating device. Background technique [0002] Hot water bag literally means a bag with hot water inside. Modern hot water bags use electric heating devices to heat the heat-prone substances inside, eliminating the trouble of filling hot water. Therefore, electric hot water bags and electric cakes are being favored by more and more people. . [0003] Electric hot water bag, also known as electric heating hand warmer, has a novel shape, large heat storage, long heat preservation time, reasonable structural characteristics, and convenient use. It is an ideal product for warming hands and feet in winter. Generally, the electric hot water bag includes a bag body and a heating element for heating the water injected into the bag body. Since the bag body of the hot water bag is a sealed structure, the bag body cannot be discharged to the ou...

AI Technical Summary

Problems solved by technology

[0004] The current electric hot water bag has the following defects: the heating effect of the heating device is not good, the safety is poor, the lack of intelligent functions, the temperature information feedback is slow, and the information lags behind; the exhaust operation is very complicated, and tools and certain skills are required. Skill

Images