Wanbao DQP-30AR electric air pump electric thermos circuit

The thermos, also called the thermos, was invented by the English scientist Dewar. In 1900, for the first time, he turned compressed hydrogen into a liquid, liquid hydrogen. This kind of thing has to be packed in bottles, but there is no such thermos at the time. He developed it himself. He uses a vacuum method to make a double-layered bottle, which removes the air in the compartment and cuts off the conduction. However, after this heat radiation will also affect the insulation, so Dewar applied a layer of silver or reflective paint in the vacuum compartment to block the heat radiation. Then use a stopper to block the bottle mouth. In this way, the three methods of heat conduction are cut off, and the bottle liner can maintain the temperature for a long time. He used this bottle to store liquid hydrogen. Later, it was widely used, and almost every one has a thermos bottle or a thermos. The picture shows the circuit diagram of Wanbao DQP-30AR electric air pump electric hot water bottle.