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Patent Searching and Data


Title:
CENTRIFUGAL ROTARY MACHINE
Document Type and Number:
Japanese Patent JP2017141691
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a centrifugal rotary machine capable of eliminating foreign material particles incoming to an impeller part of the centrifugal rotary machine.SOLUTION: A centrifugal rotary machine comprises: an impeller 3 having a disk 3a rotating around an axis, blades 3c provided on a surface facing one side in an axial direction of the disk 3a, and a cover 3b for covering the blades 3c from the outside in the radial direction; a casing 6 that forms a clearance between the same and an outer peripheral surface of the cover 3b; and a seal device 7 for sealing the clearance. The casing 6 includes: an end wall surface 6f that defines a radial direction passage between the same and a cover end face 3b1; an entrance side inner peripheral surface 6g connected to a radial direction inner side of the end wall surface 6f and extending to one side in the axial direction so as to define a fluid introduction flow passage 9 to the impeller 3; and a recycling passage 6h that is formed within the casing 6 and that opens to one end part on the outer side in the radial direction of the end wall surface 6f and to the entrance side inner peripheral surface 6g, thereby establishing communication between a radial direction passage 8 and the fluid introduction flow passage 9.SELECTED DRAWING: Figure 2

Inventors:
NAKANIWA TERUHIRO
TOKUYAMA SHINICHIRO
Application Number:
JP2016021939A
Publication Date:
August 17, 2017
Filing Date:
February 08, 2016
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND LTD
MITSUBISHI HEAVY IND COMPRESSOR CORP
International Classes:
F04D29/70; F04D29/44
Attorney, Agent or Firm:
森 隆一郎
志賀 正武
高橋 詔男
山崎 哲男
松沼 泰史