Spiral-slot radiating pipe for diesel engine waste gas recirculation cooling device

Spiral-slot radiating pipe for diesel engine waste gas recirculation cooling device

CN
  • CN 2,720,138 Y
  • Filed: 08/27/2004
  • Issued: 08/24/2005
  • Est. Priority Date: 08/27/2004
  • Status: Active Grant
First Claim
Patent Images

1. , the helical groove heat dissipating pipe used of a kind of diesel engine exhaust recycle cooler, it comprises the Stainless Steel Tube of surface smoothing, it is characterized in that:

  • its axial direction spiral surrounding of Stainless Steel Tube outer wall upper edge is pressed and is provided with two or three helical grooves;

    Described helical groove forms two or three spiral fins in the inner wall surface of Stainless Steel Tube;

    Interval between described two helical grooves on the circumference of the cross section of Stainless Steel Tube each other at a distance of 180 °

    ;

    Interval between described three helical grooves on the circumference of the cross section of Stainless Steel Tube each other at a distance of 120 °

    ;

    The diameter of described Stainless Steel Tube is 6mm-12mm.

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