Patent ID: 6799631
Filing Date: 2004-10-05
Classification: F28F,Y10T

Abstract:
A radiator 10 having a U flow coolant flow pattern with a header tank 12 divided into an inlet side I and an outlet side O by a central dividing wall 18 and an opposed return tank 14, said header tank 12 further having a cylindrical pipe inlet 22 through which inlet coolant flows, characterized in that a low pressure drop coolant flow control valve is integrated into said header tank 12, comprising,a cylindrical barrel 24 co extensive with said pipe inlet 22 and extending within said header tank 12 across said divider wall 18, said barrel 24 having cut outs 26, 28 opening into each of said header tank inlet sides I and O respectively, a hollow cylindrical sleeve 30 that fits closely within barrel 24, having an open end 32 that is concentric to inlet pipe 22 so that coolant entering inlet pipe 22 enters the hollow interior of sleeve 30 with substantially no additional restriction, and a pair of windows 36, 38 alignable with said barrel cut outs 26, 28 respectively so as to alternately open or block said cut outs 26 and 28, or to partially open both cut outs 26 and 28, and actuator means 40 to move sleeve 30 within barrel 24 so as to selectively align said respective cut outs 26,28 and windows 36, 38, thereby opening inlet pipe 22 only to header tank inlet side I, or only to header tank outlet side O, or partially to both sides I and O.