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公开(公告)号：US09765760B2
公开(公告)日：2017-09-19
申请号：US14851628
申请日：2015-09-11
申请人： NGK Insulators, Ltd.
发明人： Yukio Miyairi , Shinichi Miwa , Yuji Deguchi , Teruyoshi Mori , Kazuhiko Hamatsuka , Hiroyuki Suenobu , Masayuki Hironaga , Kazuhiko Kumazawa , Naomi Noda
CPC分类号： F03G7/00 , F02G1/0435 , F02G2243/54 , F03G7/002 , F25B9/145 , F25B2309/1402
摘要： A heat/acoustic wave conversion component includes a plurality of monolithic honeycomb segments each including a partition wall that defines a plurality of cells extending between both end faces, and the plurality of monolithic honeycomb segments each mutually converts heat exchanged between the partition wall and the working fluid in the cells and energy of acoustic waves resulting from oscillations of the working fluid. In the heat/acoustic wave conversion component including the plurality of honeycomb segments each being monolithic configured, hydraulic diameter HD of the cells is 0.4 mm or less, open frontal area of the honeycomb segments is 60% or more and 93% or less, heat conductivity of the honeycomb segments is 5 W/mK or less, and a ratio HD/L of the hydraulic diameter HD to the length L of the honeycomb segment is 0.005 or more and less than 0.02.
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公开(公告)号：US11084199B2
公开(公告)日：2021-08-10
申请号：US15664351
申请日：2017-07-31
申请人： NGK INSULATORS, LTD.
发明人： Yuta Imaizumi , Kazuhiko Hamatsuka
摘要： The honeycomb structure forming die includes a first die in which a central region on the side of a kneaded material discharging surface has a convex region projecting toward a downstream side in an extruding direction of a kneaded material, and a ring-shaped second die. In the first die, first kneaded material introducing holes are formed and latticed first slits are formed on the side of the kneaded material discharging surface of the convex region, and in the second die, there are formed second kneaded material introducing holes and latticed second slits communicating with the second kneaded material introducing holes, and the honeycomb structure forming die has a groove region where movement of the kneaded material is performed between the first kneaded material introducing hole and the second kneaded material introducing hole, in abutment surfaces of the first die and the second die.
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公开(公告)号：US09759201B2
公开(公告)日：2017-09-12
申请号：US14853015
申请日：2015-09-14
申请人： NGK Insulators, Ltd.
发明人： Yukio Miyairi , Shinichi Miwa , Naomi Noda , Yuji Deguchi , Teruyoshi Mori , Kazuhiko Hamatsuka , Hiroyuki Suenobu , Masayuki Hironaga , Kazuhiko Kumazawa
CPC分类号： F03G7/00 , F02G1/0435 , F02G2243/54 , F03G7/002 , F25B9/145 , F25B2309/1402 , H02K35/06
摘要： A heat/acoustic wave conversion component includes a partition wall that defines a plurality of cells, inside of the cells being filled with fluid that oscillates to transmit acoustic waves, the heat/acoustic wave conversion component mutually converting heat exchanged between the partition wall and the fluid and energy of acoustic waves resulting from oscillations of the fluid. The plurality of cells have an average of hydraulic diameters HDs that is 0.4 mm or less in a plane perpendicular to the cell extending direction, the heat/acoustic wave conversion component has an open frontal area at each end face of 60% or more and 93% or less, and distribution of hydraulic diameters HDs of the plurality of cells has relative standard deviation that is 2% or more and 30% or less.
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公开(公告)号：US20180169896A1
公开(公告)日：2018-06-21
申请号：US15830372
申请日：2017-12-04
申请人： NGK INSULATORS, LTD.
发明人： Yuta Imaizumi , Kazuhiko Hamatsuka
CPC分类号： B28B3/269 , B28B11/243 , B28B2003/203 , B29C48/11 , B29C48/30 , C04B38/0006
摘要： A manufacturing method of a honeycomb structure include a forming step of extruding a kneaded material including a forming raw material by use of a horizontal forming machine include a forming die in which latticed slits are formed in a kneaded material discharge surface, to obtain a round pillar-shaped honeycomb formed body having latticed partition walls; and a firing step of firing the obtained honeycomb formed body to prepare the honeycomb structure. In the forming step, there is used the forming die in which there are formed the slits different in lattice shape between a central portion and a circumferential portion in the kneaded material discharge surface, and the forming die is disposed in an orientation in which an inclination of one row of the latticed slits formed in the central portion is within an angle of ±10° to a vertical direction, to extrude the kneaded material in a horizontal direction.
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公开(公告)号：US09869303B2
公开(公告)日：2018-01-16
申请号：US14851569
申请日：2015-09-11
申请人： NGK Insulators, Ltd.
发明人： Yukio Miyairi , Shinichi Miwa , Naomi Noda , Yuji Deguchi , Teruyoshi Mori , Kazuhiko Hamatsuka , Hiroyuki Suenobu , Masayuki Hironaga , Kazuhiko Kumazawa
CPC分类号： F03G7/00 , F02G1/0435 , F03G7/002 , F25B9/145 , F25B2309/1402
摘要： 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.
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公开(公告)号：US10828819B2
公开(公告)日：2020-11-10
申请号：US15386275
申请日：2016-12-21
申请人： NGK INSULATORS, LTD.
发明人： Hiroaki Ito , Kazuhiko Hamatsuka
摘要： In the adjusting method of the extrusion rate, a perforated plate is superimposed on and attached to a forming die, the perforated plate includes a plurality of through hole portions, the adjusting method includes a perforated plate group consisting of a plurality of perforated plates which are different in degree of diameter decrease of the hole diameter, and the adjusting method includes a trial extrusion step of extruding the forming material to form a trial honeycomb formed body, a shape measuring step of measuring a shape of a formed body end face of the trial honeycomb formed body, and a perforated plate selecting step of selecting the perforated plate to be suitably attached to the forming die.
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公开(公告)号：US10688706B2
公开(公告)日：2020-06-23
申请号：US15664429
申请日：2017-07-31
申请人： NGK INSULATORS, LTD.
发明人： Yuta Imaizumi , Kazuhiko Hamatsuka
摘要： The honeycomb structure forming die includes a first die in which a central region on the side of a kneaded material discharging surface has a convex region projecting toward a downstream side in an extruding direction of a kneaded material, a ring-shaped second die, and a reticulated member interposed between the first die and the second die. In the first die, first kneaded material introducing holes are formed and latticed first slits are formed on the side of the kneaded material discharging surface of the convex region, and in the second die, there are formed second kneaded material introducing holes and latticed second slits communicating with the second kneaded material introducing holes, and movement of a kneaded material is performed between the first kneaded material introducing hole and the second kneaded material introducing hole through meshes of the reticulated member.
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公开(公告)号：US09759157B2
公开(公告)日：2017-09-12
申请号：US14849984
申请日：2015-09-10
申请人： NGK Insulators, Ltd.
发明人： Yukio Miyairi , Shinichi Miwa , Tatsuo Kawaguchi , Naomi Noda , Yuji Deguchi , Teruyoshi Mori , Kazuhiko Hamatsuka , Hiroyuki Suenobu , Masayuki Hironaga , Kazuhiko Kumazawa
CPC分类号： F02G5/02 , F02G1/02 , F02G1/043 , F02G2243/54 , F03G7/002 , F25B9/145 , F25B2309/1402
摘要： A heat/acoustic wave conversion unit includes a heat/acoustic wave conversion component and two heat exchangers. Hydraulic diameter HD of the cells in the heat/acoustic wave conversion component is 0.4 mm or less, and a ratio HD/L of HD to the length L of the heat/acoustic wave conversion component is from 0.005 to 0.02. One of the heat exchangers includes a heat-exchanging honeycomb structure and an annular tube that surrounds a circumferential face of the heat-exchanging honeycomb structure. The annular tube includes a structure body that is disposed in the channel to increase a contact area with the heated fluid, an inflow port into which the heated fluid flows, and an outflow port through which the heated fluid flows out. At least one of the heat-exchanging honeycomb structure and the structure body is made of a ceramic material that contains SiC as a main component.
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公开(公告)号：US09486794B2
公开(公告)日：2016-11-08
申请号：US14885085
申请日：2015-10-16
申请人： NGK Insulators, Ltd.
CPC分类号： B01J35/04 , B23P15/243 , B28B3/269 , B29C47/0028 , B29C47/12
摘要： A die has two surfaces, in a forming material supplying surface which is one surface, a plurality of back holes to introduce a forming material of a honeycomb formed body into the die are formed, and in a honeycomb formed body extruding surface which is the other surface, lattice-shaped slits corresponding to cell partition walls are formed, the back holes communicate with the slits in slit intersecting portions of the slits, polygonal cell blocks defined by the slits include chamfered portions in which parts of corner portions and the like are chamfered at a chamfering angle θ of 1.0 to 8.0° to the extruding direction, from the honeycomb formed body extruding surface toward a slit depth direction, and straight portions which are not chamfered, and a ratio of a length L of the straight portion to a slit depth D is from 20 to 60%.
摘要翻译： 模具具有两个表面，在形成一个表面的成形材料供给表面上形成有将蜂窝成形体的成形材料引入模具中的多个后孔，并且在作为另一个的蜂窝成形体挤出表面 形成与单元隔壁相对应的表面的格子状的狭缝，后孔与狭缝的狭缝交叉部分中的狭缝连通，由狭缝限定的多边形单元块包括倒角部分，其中角部等的部分被倒角 以与挤出方向成1.0〜8.0°的倒角角度，从蜂窝成型体挤压面向狭缝深度方向，以及未倒角的直线部分，以及直线部分与狭缝的长度L的比 深度D为20〜60％。
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