×

Ejector fan shroud arrangement

  • US 3,937,192 A
  • Filed: 09/03/1974
  • Issued: 02/10/1976
  • Est. Priority Date: 09/03/1974
  • Status: Expired due to Term
First Claim
Patent Images

1. An automotive engine cooling means for use intermediate a radiator and an engine, said cooling means comprising a fan having a plurality of fan blades and being operatively connected to and driven by said engine, and concentric inner and outer fan shrouds, each mounted so as to have a portion thereof positioned radially outwardly of said fan with said outer shroud extending a predetermined distance past said fan toward said engine, one of said shrouds having a rectangular-shaped face formed on an end thereof and secured to said radiator with the other end thereof being circular-shaped, and the other of said shrouds being cylindrically-shaped and secured to one of said fan at the outer tips of said fan blades thereof, said other shroud, and a separate fixed abutment, providing a clearance of a predetermined width intermediate said inner and outer shrouds, the air drawn through said fan and the air entrained through said clearance between said shrouds terminating in an ejector action extending from the engine end of said inner shroud to the engine end of said outer shroud, said ejector action serving to substantially diminish air-flow recirculation around the outer tips of said fan blades to the low-pressure area intermediate the fan and the radiator.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×