DEVICE FOR PREPARING HOT DRINKS.

Abstract

Abstract This circuit controls the temp. of hot water flowing into an automatic hot drink dispenser. The cold water flows via a valve (10) and a float chamber (5) into the heating vessel. Since the cold water temp. and the mains supply voltage can vary, temp. sensors are used to ensure that the hot water delivered is at the correct temp. for the drink, e.g. 97 degrees C. for coffee. A selector switch (24) is connected to a main memory (18) which, together with a clock (16), provides a step-by-step programme to control the heating element switch (20). Input and output temp. sensors (33,35) apply programme corrections via ROM memories (29, 37) and a multiplexer (31).

Inventors

No inventors recorded.

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