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US 4,088,181 AGranted
Disc type matrix of rotary regenerative heat exchanger
AssigneesNissan Motor Co., Ltd., Kabushiki Kaisha Tsuchiya Seisakusho
InventorsYoshihiro Sakaki, Takeshi Mitomo, Akitsuna Nakagaki
Life of this patent
Estimating the term…
Abstract
A disc type matrix is constructed by spirally winding as a unit a flat sheet metal strip and a longitudinally corrugated sheet metal strip. The outermost layer of the matrix is formed with the flat sheet metal strip and has, on the circumferential surface thereof, a plurality of recesses for receiving coupling members which are arranged to couple the matrix and a driving ring gear member.
Claims8
A rotary regenerative heat exchanger for use in a gas turbine engine, comprising:
- a disc type matrix arranged to be rotatable about the center axis thereof, said disc type matrix including a spirally wound stack of a flat sheet metal strip and a longitudinally corrugated sheet metal strip, the outermost layer of the matrix being formed with a part of the flat sheet metal strip, a plurality of recesses formed on the circumferential surface of the outermost layer thereof, and a plurality of portions of the wound stack, respectively adjacent to the recesses each of which portions is of a layer formed by a plurality of flat sheet metals constituting the flat sheet metal strip and a plurality of longitudinally corrugated sheet metals constituting the corrugated sheet metal strip in which each flat sheet metal is superimposed upon each corrugated sheet metal, said layer being higher in density than the other portions of the wound stack in which the intervals among the flat sheet metals are smaller than those in the other portions of the wound stack;
- and
- driving means for forcing to rotatable said disc type matrix by applying the torque to the matrix through the recesses thereof.
Dependencies are inferred from the claim text.