PIPE MODULE FOR EJECTOR

To provide a pipe module for an ejector which prevents freezing of an ejector and can achieve improvement of sound insulation performance etc.SOLUTION: An ejector 34 used in a fuel off-gas circulation system of a fuel cell system comprises: a nozzle part 61 which jets a fuel gas at high speed; and a...

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Bibliographic Details
Main Authors KUMAGAI TAKUHIRO, OTA KATSUHISA, YAMAGUCHI NAOKI, KANEKO KENICHIRO
Format Patent
LanguageEnglish
Japanese
Published 20.05.2021
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Summary:To provide a pipe module for an ejector which prevents freezing of an ejector and can achieve improvement of sound insulation performance etc.SOLUTION: An ejector 34 used in a fuel off-gas circulation system of a fuel cell system comprises: a nozzle part 61 which jets a fuel gas at high speed; and a pipe member 62 forming a gas passage in which the fuel gas and a fuel off-gas circulate and is integrally assembled to an end plate 23A of a fuel cell. The end plate 23A includes a compartment 130 in which a coolant heated by heat generated by power generation of the fuel cell circulates. The pipe member 62 of the ejector 34 is disposed so as to penetrate through the compartment 130. The pipe member 62 is disposed so that at least an insertion port (insertion pipe part 82) of the nozzle part 61 and a branch part 86 of a suction port (suction pipe part 83) of the fuel off-gas are located within the compartment 130.SELECTED DRAWING: Figure 4 【課題】エジェクタの凍結を防止する共に、遮音性の向上等を図ることのできるエジェクタ用パイプモジュールを提供する。【解決手段】燃料電池システムの燃料オフガス循環系に用いられるエジェクタ34は、燃料ガスを高速で噴出させるノズル部61と、燃料ガス及び燃料オフガスが流通するガス流路を構成するパイプ部材62とから構成され、燃料電池のエンドプレート23Aに一体に組付けられている。エンドプレート23Aは、燃料電池の発電に伴う発熱によって温められた冷却液が流通する区画室130を備え、エジェクタ34のパイプ部材62は、この区画室130を貫通するように配設されている。パイプ部材62は、少なくともノズル部61の挿入口(挿入管部82)と、燃料オフガスの吸引口(吸引管部83)の分岐部86が区画室130内に位置するように配設されている。。【選択図】 図4
Bibliography:Application Number: JP20190204531