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1. (WO2017056578) EXHAUST GAS PURIFYING DEVICE
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Pub. No.: WO/2017/056578 International Application No.: PCT/JP2016/068154
Publication Date: 06.04.2017 International Filing Date: 17.06.2016
Chapter 2 Demand Filed: 02.06.2017
IPC:
F01N 3/24 (2006.01) ,F01N 3/08 (2006.01) ,F01N 3/20 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
N
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3
Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
08
for rendering innocuous
10
by thermal or catalytic conversion of noxious components of exhaust
24
characterised by constructional aspects of converting apparatus
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
N
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3
Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
08
for rendering innocuous
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
N
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3
Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
08
for rendering innocuous
10
by thermal or catalytic conversion of noxious components of exhaust
18
characterised by methods of operation; Regulation
20
specially adapted for catalytic conversion
Applicants: YANMAR CO., LTD.[JP/JP]; 1-32, Chayamachi, Kita-ku, Osaka-shi, Osaka 5308311, JP
Inventors: KOBAYASHI Ryota; JP
YOKOYAMA Tetsuya; JP
FUKUI Yoshinori; JP
TSUJIMOTO Keiichi; JP
ONISHI Kenya; JP
Agent: YANO Juichiro; JP
Priority Data:
2015-19540130.09.2015JP
Title (EN) EXHAUST GAS PURIFYING DEVICE
(FR) DISPOSITIF DE PURIFICATION DE GAZ D'ÉCHAPPEMENT
(JA) 排気浄化装置
Abstract:
(EN) The present invention addresses the problem of providing an exhaust gas purifying device with which adhesion of precipitated reducing agent onto a mixer is suppressed. This exhaust gas purifying device (1) is provided with: a spray nozzle provided in an exhaust pipe of an engine; a mixer (11) provided on the downstream side of the spray nozzle, in the direction of flow of exhaust gas; and a catalyst reactor (12) provided on the downstream side of the mixer (11). The configuration is such that a reducing agent is sprayed from a urea-water spray nozzle (2) into the exhaust gas from the engine (18), the exhaust gas and the reducing agent are mixed in the mixer (11), and nitrogen oxides in the exhaust gas are reduced by means of a catalyst housed in the catalyst reactor (12). The mixer (11) includes a tubular body (21) and a plurality of fins (22) disposed in a radial pattern about the axis of the tubular body (21), inside the tubular body (21). An upstream side part of each fin (22) has a cut-out portion (221) obtained by cutting the fin (22) from an upstream side edge portion 22a thereof toward the axis, toward the downstream side thereof.
(FR) La présente invention aborde le problème de la fourniture d'un dispositif de purification de gaz d'échappement avec lequel l'adhérence d'un agent de réduction précipité sur un mélangeur est supprimée. Ce dispositif de purification de gaz d'échappement (1) est pourvu : d'une buse de pulvérisation prévue dans un tuyau d'échappement d'un moteur ; d'un mélangeur (11) prévu sur le côté aval de la buse de pulvérisation, dans la direction d'écoulement des gaz d'échappement ; et d'un réacteur catalytique (12) disposé sur le côté aval du mélangeur (11). La configuration est telle qu'un agent de réduction est pulvérisé à partir d'une buse de pulvérisation d'urée-eau (2) dans le gaz d'échappement provenant du moteur (18), le gaz d'échappement et l'agent de réduction sont mélangés dans le mélangeur (11), et les oxydes d'azote dans les gaz d'échappement sont réduits au moyen d'un catalyseur logé dans le réacteur catalytique (12). Le mélangeur (11) comprend un corps tubulaire (21) et une pluralité d'ailettes (22) disposées dans un motif radial autour de l'axe du corps tubulaire (21), à l'intérieur du corps tubulaire (21). Une partie latérale amont de chaque ailette (22) présente une partie découpée (221) obtenue en découpant l'ailette (22) depuis une partie bord côté amont (22a) de celle-ci vers l'axe, vers le côté aval de celle-ci.
(JA) 混合器への析出した還元剤の付着を抑制した排気浄化装置を提供することを課題とする。排気浄化装置(1)は、エンジンの排気管内に設けられる噴射ノズルと、排気の流れ方向における噴射ノズルの下流側に設けられる混合器(11)と、混合器(11)の下流側に設けられる触媒反応器とを備え、エンジン(18)の排気に尿素水噴射ノズル(2)から還元剤を噴射して混合器(11)で混合し、触媒反応器(12)に収容されている触媒によって排気中の窒素酸化物を還元する構成であって、混合器(11)は、筒体(21)と、筒体(21)の軸心を中心として筒体(21)内に放射状に配置された複数のフィン(22)とを有し、フィン(22)の上流側部分は、フィン(22)の上流側端部22aから軸心に向かって下流側へ切り欠かれた切欠部(221)を有する。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)