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:
Jan. 16, 2018
Filed:
Sep. 11, 2015
Ngk Insulators, Ltd., Nagoya, JP;
Yukio Miyairi, Nagoya, JP;
Shinichi Miwa, Nagoya, JP;
Naomi Noda, Nagoya, JP;
Yuji Deguchi, Nagoya, JP;
Teruyoshi Mori, Nagoya, JP;
Kazuhiko Hamatsuka, Nagoya, JP;
Hiroyuki Suenobu, Nagoya, JP;
Masayuki Hironaga, Nagoya, JP;
Kazuhiko Kumazawa, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A heat/acoustic wave conversion component having a first end face and a second end face, includes a partition wall that defines a plurality of cells extending from the first end face to the second end face, inside of the cells being filled with working fluid that oscillates to transmit acoustic waves, the heat/acoustic wave conversion component mutually converting heat exchanged between the partition wall and the working fluid and energy of acoustic waves resulting from oscillations of the working fluid. Hydraulic diameter HD of the heat/acoustic wave conversion component is 0.4 mm or less, where the hydraulic diameter HD is defined as HD=4×S/C, where S denotes a cross-sectional area of each cell perpendicular to the cell extending direction and C denotes a perimeter of the cross section, and the heat/acoustic wave conversion component has three-point bending strength of 5 MPa or more.