WATER HEATER Russian patent published in 2008 - IPC F24H1/20 

FIELD: heating systems.

SUBSTANCE: objective of the invention is to make a heater in the form of compact pipeline element with standard connection, with possibility of its connection to the power supply circuit, with functions for connecting a load with gradual increase in power and stabilisation or limiting of electrical power dissipated in the water load. The objective can be realised by a water heater which consists of inlet connection pipes, a hollow cylindrical case with an earth terminal, on the lower part of which there is hollow threaded nozzle, and electrodes, made in the form of lamellar discs with flow openings, fixed through insulators between themselves and the case. Two of the electrodes are phase, one of which is detachably installed in the cavity of the nozzle; the other is inside the case, and the middle electrode, located between the phase electrodes with joining of its corresponding plane to the perimeter of the case, is a null electrode. The water heater is also equipped with two null electrodes inside the cavity of the nozzle and inside the case with its plane joined to the case, and a ring, whose edges are joined to the null electrode in the nozzle and the middle null electrode. The outlet connection pipe is located on the upper part of the hollow case, and the inlet connection pipe is on the lower part of the nozzle.

EFFECT: allows for connecting a load with gradual increase in power or limiting electrical power.

2 cl, 4 dwg