Heat exchanger core assembly for engine cooling system
OwnerGene K. Miyakawainventor
Life of this patent
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Abstract
A heat exchanger core assembly suitable for use in a motor vehicle and the like cooling system. The assembly has a multiplicity of parallel heat transfer fins pierced by a large number of liquid-filled tubes to be cooled. The leading edges of the fins are overturned to provide venturi-shaped inlets for the cooling air effective to increase the air flow velocity over the fins. These overturned edges have an outer broad surface lying in a plane normal to the air passages which surface is readily cleared of insects unable to enter the venturi throat.
Claims3
In a heat exchanger core assembly of the type having a multiplicity of cooling medium tubes arranged in spaced apart parallel relation between a pair of headers and piercing a multiplicity of heat conductive fins arranged in spaced apart parallel relation in good heat conducting intimacy to each of said tubes and cooperating to provide air flow passages crosswise of said tubes, that improvement which comprises:
- enlargements extending lengthwise of and restricted to the leading edges of said fins along the air inlets to said air flow passages, said enlargements cooperating with one another to form venturi-shaped air inlets into said air flow passages lying in a common plane at the air entrance of said air flow passages and effective to increase the velocity of air flow and the heat exchange between said tubes, fins and the air, and the portions of said air flow passages inwardly of said venturi shaped air inlets and between said cooling medium tubes being imperforate, parallel to one another and free of air flow disturbing obstructions.
Dependencies are inferred from the claim text.