Instantaneous water heating unit - has turbine driving tachogenerator to control corresponding water flow and heating energy relationship

摘要

The installation is used to instantaneously heat water, the heating action being dependent on the rate of flow. It comprises a separate unit which receives the cold water (4), passint it through a chamber (5) before the water enters the heating unit (1). This chamber contains a turbine wheel (6), rotated in accordance with the water flow. The wheel is coupled to a tachogenerator (7) and rotates it. The current generated is used to electronically control (8) a make/break switch (8') in the heating circuit, corresponding to the water flow and heating energy relationship set previously (9).