Liquid cooler and control therefor

Claim 1

AN AIR CONDITIONED SURFACES COLLER FOR LIQUIDS COMPRISING, IN COMBINATION, A CHIMNEY-LIKE TOWER OPEN AT THE TOP AND HAVING A LOWER PERIPHERAL WALL PORTION FORMED WITH OPENINGS THERETHROUGH; A PLURALITY OF HEAT EXCHANGE ELEMENTS RESPECTIVELY LOCATED IN SAID OPENINGS SO THAT COOLING AIR WILL BE DRAWN OVER SAID HEAT EXCHANGE ELEMENTS BY THE DRAFT PRODUCED BY THE CHIMNEY-LIKE TOWR, SAID HEAT EXCHANGE ELEMENTS EACH INCLUDING A SUBSTANTIALLY VERTICAL DISTRIBUTING CHAMBER, A SUBSTANTIALLY VERTICAL COLLECTING CHAMBER TRANSVERSELY SPACED THEREFROM, AND A PLURALITY OF HEAT EXCHANGER PIPES CONNECTING SAID CHAMBER WITH ONE ANOTHER; MEANS, INCLUDING AN INFLOW CONDUIT AND A RETURN FLOW CONDUIT, FOR FEEDING LIQUID TO BE COOLED INTO SAID HEAT EXCHANGE ELEMENTS EACH INCLUDING SUBSTANTIALLY VERTICAL FROM; AND CONTROL MEANS CO-OPERATING WITH SAID HEAT EXCHANGE ELEMENTS FOR VARYING THE HEIGHT OF THE LIQUID LEVEL THEREIN TO THEREBY REGULATE TH SIZE OF THE EFFECTIVE HEAT EXCHANGE SURFACE AREA.