Means for setting the switching on and off periods of a...

Details Means for setting the switching on and off periods of a... Means for setting the switching on and off periods of a...

F - Mech Eng,Light,Heat,Weapons

23

N

341/21

F23N 5/02 (2006.01) F23N 1/00 (2006.01) F24D 3/00 (2006.01) G05D 23/24 (2006.01)

Patent

CA 1244112

Abstract Means are provided for setting the switching on and off periods of a burner (6). The latter heats a small heat exchanger (5) of a hot water heating installation having several radiators. The heat exchanger (5) is in series with a circulating pump and parallel to an overflow conduit. A temperature sensor measures the measured temperature (TF) of the water leaving the heat exchanger (5). An integrator (17) is fed with the difference between a reference temperature (TS) and the measured temperature (TF) measured by the temperature sensor (12). A hysteresis switch (18) switches the burner (6) on when the integrated value (Vi) reaches the one limiting value of the hysteresis switch and switches the burner off when the integrated value reaches the other limiting value. In this way, there are comparatively long intervals between successive switching on operations of the burner. Fig. 2

487200

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