The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 16, 2019
Filed:
Nov. 21, 2014
Mitsubishi Hitachi Power Systems, Ltd., Kanagawa, JP;
Naoki Suganuma, Tokyo, JP;
Takahiro Okimoto, Tokyo, JP;
Noboru Kawamoto, Tokyo, JP;
Shun Yamanouchi, Tokyo, JP;
Tetsuya Yamada, Tokyo, JP;
Toshifumi Kudo, Tokyo, JP;
MITSUBISHI HITACHI POWER SYSTEMS, LTD., Kanagawa, JP;
Abstract
An object is to provide a decompression device including a plurality of stages of orifice plates disposed in a flow passage, which generates less noise in response to sonic feedback phenomenon and gas-column resonance. A decompression deviceA includes: an upstream orifice platedisposed in a ductforming a flow passage for a fluid F; and a downstream orifice platedisposed in the flow passage and downstream of the upstream orifice plate. A jet-flow interference partA is disposed only partially on an outlet rim portion of an orificeon the upstream orifice plateand configured to interfere with a jet flow discharged from the orifice. Positions of Karman vortices e are differentiated in a duct axial direction between regions with and without the jet-flow interference partA to reduce generation of noise.