GB811454A - Improvements in and relating to liquid-cooled internal combustion engines - Google Patents

Abstract

811,454. Centrifugal pumps and fans. MINNEAPOLIS-MOLINE CO. Feb. 7, 1956, No. 3836/56. Class 110 (1). [Also in Group XIII] Apparatus combining the functions of a fan, radiator, pump and flywheel for use with a liquid-cooled internal combustion engine comprises a fan rotor 10 through which engine coolant liquid circulates, said rotor being provided with a plurality of fan blades 11 each having a cham. ber 21 formed therein with an inlet 29 to the chamber disposed radially inwardly of an outlet 30 from the chamber, the rotor incorporating an annular manifold 34 connecting all the blade chamber inlets and an annular chamber 17 connecting all the blade chamber outlets. In the form shown the fan blades 11 extend between the manifold 34 and chamber 17 the latter being formed by a disc 55 and a back plate 12 incorporating a hub 13 whereby the rotor is secured to the engine shaft c. Each blade 11 is externally finned and is of the cross-section shown in Fig. 4 providing a tortuous path engine for coolant flowing therethrough. Forwardly and axially aligned with the hub 13 is a stationary assembly comprising a sleeve 36 partitioned to provide within the sleeve a separate chamber 52. Hot coolant flows from the engine through a duct 45 to chamber 52 and thence through pipes 61 to chamber 34 from which the coolant enters the fan blades through the inlets 29. The coolant cooled in blades 29 is forced by centrifugal action through outlets 30 and enters the rotating annular chamber 17 from which it is collected by stationary scoops 67 which direct the coolant through the sleeve 36, through a port 46 leading to a duct 44 (Fig. 1) and thence to the engine B. Cooling air is expelled radially outwardly, between the fan blades. The blade assembly may be cast as an integral unit.