CONTROL METHOD OF PUMP WITH VARIABLE FEED, WHICH IS INSTALLED IN HEATING SYSTEM Russian patent published in 2015 - IPC F24D19/10 

FIELD: engines and pumps.

SUBSTANCE: control method of a pump with variable feed, which is installed in a heating system comprising a heat exchanger connected to two circuits of fluid substances. The pump with variable feed allows changing the flow velocity of the first fluid substance inside the heat exchanger; the return circuit in the primary circuit, which allows the first fluid substance reaching the heat exchanger inlet to be mixed with some part of the first fluid substance leaving the heat exchanger outlet; the first temperature sensor (S1) measuring temperature (T1) of the second fluid substance leaving the secondary circuit, the second temperature sensor (S3) measuring temperature (T3) of the first fluid substance leaving the primary circuit; and a control unit electrically connected to the above first and second temperature sensors (S1, S3). The above sensors (S1, S3) generate electric signals in functions of temperatures (T1) and (T3) and create input electric signals of the control unit.

EFFECT: possible adjustment of control of a pump with variable feed taking into account temperatures of both fluid substances at corresponding outlets of the heat exchanger.

16 cl, 2 dwg