The secret whistle of the whistle kettle is on the lid of the kettle. There is a disc inside the cover with several reeds on it (the picture on the right is similar to the reeds in the harmonica). Then a disc with a reed is installed inside the cover, opposite to the handle of the cover, and there are several slits around the handle of the cover, so that air can rush out of the slits after passing through the reed.
When water is boiled, it will produce a lot of steam. These high-pressure steam will pass through the reed in the pot cover and then rush out from the gap around the pot cover, making the reed vibrate and sound when passing through the reed. Because the reed is fixed, no matter how much water is in the pot, the tone of the whistle is the same after boiling. In addition, in order to let the steam flow away from the reed channel as much as possible, there is also a cover at the spout to cover the spout when boiling water.
With the great leap forward of the times, the steady development of social economy and the accelerated pace of life, people pay more and more attention to the improvement of quality of life and efficiency. The traditional stainless steel singing pot has long failed to keep up with the development of the times and has been gradually abandoned by people. At present, a new generation of singing kettle-singing electric kettle plays a leading role in social life.