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Title:
CURVED HONEYCOMB STRUCTURAL BODY
Document Type and Number:
Japanese Patent JP2664118
Kind Code:
B2
Abstract:

PURPOSE: To provide a curved honeycomb mold body where the flow rate of fluid which comes in from one end face, and comes out of the other end face through through holes, is uniformly distributed.
CONSTITUTION: The curved honeycomb mold body 8 in an ellipse shape in cross section while each cell is in a square shape, includes a plurality of through holes (curved passage) 14 which are penetrated through from one end face to the other end face. Each through hole 14 is formed into a partition composed of inner walls 12 extended in the radial direction and inner walls 10 extended in the major axis direction of the aforesaid ellipse. In this case, a pitch Py between bulkheads, that is, the adjacent inner walls 10 and 10 forming each through hole 14, is so set as to be made gradually small at a linear rate or stepwise as it goes from the inward diameter side to the outward diameter side. Each through hole 14 is in a square shape in cross section. A pitch Px between the bulkheads in the direction perpendicularly intersected with the radial direction over a cross sectional surface is kept constant. By this constitution, when fluid comes in the curved honeycomb mold body from one end face, and comes out of the other end face through the through holes 14, the flow speed can thereby be uniformly distributed over the end face from the inward diameter side to the outward diameter side.


Inventors:
MACHIDA MINORU
KAMYA MASAOMI
Application Number:
JP31218192A
Publication Date:
October 15, 1997
Filing Date:
November 20, 1992
Export Citation:
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Assignee:
NIPPON GAISHI KK
International Classes:
B01J35/04; F01N3/28; F15D1/04; F16L9/18; F16S5/00; C04B38/00; (IPC1-7): F01N3/28; F01N3/28; B01J35/04; C04B38/00; F16S5/00
Domestic Patent References:
JP1274844A
JP648926U
JP6411315U
JP51130752U
JP5725735U
Attorney, Agent or Firm:
Hattori Masaki