JP2020121268A - Dilution device - Google Patents

Dilution device Download PDF

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JP2020121268A
JP2020121268A JP2019014523A JP2019014523A JP2020121268A JP 2020121268 A JP2020121268 A JP 2020121268A JP 2019014523 A JP2019014523 A JP 2019014523A JP 2019014523 A JP2019014523 A JP 2019014523A JP 2020121268 A JP2020121268 A JP 2020121268A
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diluting device
gas
air inlet
gas outlet
air
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JP7300098B2 (en
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岳 下新原
Gaku Shimonihara
岳 下新原
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Suzuki Motor Corp
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Suzuki Motor Corp
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/50Fuel cells

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Abstract

To suppress the lowering of a dilution effect of a dilution device.SOLUTION: A box-shaped dilution device 3 comprises a gas flow-in port 31 into which a dilution-objective gas flows, an air flow-in port 32a into which air at the outside flows, and a gas flow-out port 32c out of which the gas diluted by the air flows. The gas flow-in port is formed at a first face 31 of the dilution device, and the air flow-in port and the gas flow-out port are formed at a second face 32, which is different from the first face, of the dilution device.SELECTED DRAWING: Figure 2

Description

本発明は、希釈対象のガスを希釈する希釈装置に関する。 The present invention relates to a diluter for diluting a gas to be diluted.

特許文献1に、燃料ガスを用いた化学反応によりエネルギーを発生する装置から排出された燃料ガスを導入し、この燃焼ガスを空気により希釈拡散する拡散スペースを設けた希釈ボックスと、前記希釈ボックス内に突出して配設され、前記装置から排出された燃料ガスを放出する燃料ガス放出配管と、前記希釈ボックス内に空気を送風する送風装置とを備えた希釈装置が記載されている。前記希釈ボックスは、前記送風装置から送風された空気をボックス内に導入するための空気導入口と、ボックス内で希釈された希釈燃料ガスを外部に排出する希釈燃料ガス排出口とを備え、前記空気導入口と前記希釈燃料ガス排出口とを結ぶ排出流路の外側に前記拡散スペースが設けられている。 In Patent Document 1, a fuel box discharged from an apparatus for generating energy by a chemical reaction using a fuel gas is introduced, and a diluting box provided with a diffusion space for diluting and diffusing the combustion gas with air; There is described a diluting device provided with a fuel gas discharge pipe, which is disposed so as to project out from the device, for discharging the fuel gas discharged from the device, and a blower device for blowing air into the diluting box. The dilution box comprises an air inlet for introducing air blown from the blower into the box, and a diluted fuel gas outlet for discharging the diluted fuel gas diluted in the box to the outside, The diffusion space is provided outside the discharge flow path connecting the air introduction port and the diluted fuel gas discharge port.

特開2005−158574号公報JP, 2005-158574, A

希釈装置において、希釈のための空気が流入する空気流入口から希釈ガス流出口へと向かう流路が直線状である場合、空気と希釈対象ガスとの混合が不十分となり希釈効果が低下することが考えられる。本発明はこのような実状に鑑みてなされたものであって、希釈装置の希釈効果低下を抑えることを目的とする。 In the diluter, if the flow path from the air inlet for the dilution air to the dilution gas outlet is linear, the mixing of air and the gas to be diluted becomes insufficient and the dilution effect decreases. Is possible. The present invention has been made in view of such circumstances, and an object thereof is to suppress a reduction in the dilution effect of a diluting device.

上記目的を達成するために、本発明に係る希釈装置は、希釈対象のガスが流入するガス流入口と、外部の空気が流入する空気流入口と、前記空気により希釈された前記ガスが流出するガス流出口とを備えたボックス状の希釈装置である。そして、前記希釈装置の第1の面に前記ガス流入口が設けられ、前記第1の面とは異なる前記希釈装置の第2の面に前記空気流入口及び前記ガス流出口が設けられている。 In order to achieve the above object, the diluting device according to the present invention has a gas inlet into which a gas to be diluted flows, an air inlet into which external air flows, and the gas diluted with the air flows out. It is a box-shaped diluter equipped with a gas outlet. The gas inlet is provided on the first surface of the diluting device, and the air inlet and the gas outlet are provided on the second surface of the diluting device different from the first surface. ..

本発明によれば、希釈装置の希釈効果低下を抑えることができる。 According to the present invention, it is possible to suppress a decrease in the dilution effect of the diluting device.

希釈装置が搭載された二輪車の側面図である。It is a side view of a two-wheeled vehicle equipped with a diluter. 車幅方向に垂直な面に沿った、希釈装置の断面図である。It is sectional drawing of the diluting device along the surface perpendicular|vertical to the vehicle width direction.

以下、本発明を図示の実施の形態に基づいて説明する。ただし、本発明は、以下に説明する実施の形態によって限定されるものではない。なお、図において、矢印F及びBは二輪車の車両前方及び車両後方をそれぞれ示し、矢印U及びDは車両上方及び車両下方をそれぞれ示す。 Hereinafter, the present invention will be described based on the illustrated embodiments. However, the present invention is not limited to the embodiments described below. In the figure, arrows F and B indicate the front side and the rear side of the motorcycle, respectively, and arrows U and D indicate the upper side and the lower side of the vehicle, respectively.

図1に示すように、二輪車1の後輪1aの上方に、当該二輪車を駆動するための、水素を燃料ガスとする燃料電池2が搭載されている。燃料電池2の下方には、燃料電池から排出された水素を希釈するための希釈装置3が配置されている。燃料電池2の車両後方には、希釈装置3において希釈された水素を外部に放出するための排気ダクト4が配置されている。 As shown in FIG. 1, above the rear wheel 1a of the two-wheeled vehicle 1, a fuel cell 2 for driving the two-wheeled vehicle using hydrogen as fuel gas is mounted. Below the fuel cell 2, a diluting device 3 for diluting hydrogen discharged from the fuel cell is arranged. An exhaust duct 4 for releasing the hydrogen diluted in the diluting device 3 to the outside is arranged behind the fuel cell 2 in the vehicle.

図2に示すように、希釈装置3はボックス状に形成されており、その上面31は燃料電池2に面している。上面31には、後面32よりも前面33に近い位置に水素流入口31aが設けられている。燃料電池2から排出された水素は、水素流入口31aを経て希釈装置3の内部に流入する。 As shown in FIG. 2, the diluting device 3 is formed in a box shape, and the upper surface 31 thereof faces the fuel cell 2. A hydrogen inlet 31 a is provided on the upper surface 31 at a position closer to the front surface 33 than the rear surface 32. Hydrogen discharged from the fuel cell 2 flows into the diluter 3 through the hydrogen inlet 31a.

後面32には空気流入口32aが設けられ、希釈装置外部の空気が空気流入口32aを経て希釈装置内部に流入する。空気流入口32aの外側には、希釈装置の外部から内部へと空気を送り込むためのファン32bが取り付けられている。
後面32にはさらに、希釈装置内部で希釈された希釈水素が流出する希釈ガス流出口32cが空気流入口32aの下方に設けられている。この希釈ガス流出口32cと排気ダクト4とはホース5により連結されており、希釈ガス流出口から流出した希釈水素はホース5及び排気ダクト4を経て外部へと排出される。
An air inlet 32a is provided on the rear surface 32, and air outside the diluting device flows into the diluting device through the air inflow port 32a. A fan 32b for sending air from the outside to the inside of the diluting device is attached to the outside of the air inlet 32a.
The rear surface 32 is further provided below the air inlet 32a with a diluent gas outlet 32c through which the diluted hydrogen diluted in the diluter flows out. The diluent gas outlet 32c and the exhaust duct 4 are connected by a hose 5, and the diluted hydrogen flowing out from the diluent gas outlet is discharged to the outside via the hose 5 and the exhaust duct 4.

ファン32bの動作中においては、希釈装置3の内部にて略半円弧状の矢印Y1に示すような気流が発生する。すなわち、空気流入口32aから流入した空気は前面33に向かって流れ、前面33に当たることで向きが変わり、希釈ガス流出口32cに向かって流れる。
このような矢印Y1に示す気流に起因して、矢印Y2に示す渦が、上面31及び前面33により形成される隅部35において発生する。すなわち、隅部35において、空気と水素の混合気体が前面33に向かって流れ、前面33に当たることで向きが上向きになり、その後上面31に当たることでさらに向きが変わり、後面32に向かって流れる。
During the operation of the fan 32b, an air flow as indicated by a substantially semi-circular arrow Y1 is generated inside the diluting device 3. That is, the air flowing in from the air inlet 32a flows toward the front surface 33, changes its direction by hitting the front surface 33, and flows toward the dilution gas outlet 32c.
Due to the air flow indicated by the arrow Y1, the vortex indicated by the arrow Y2 is generated in the corner portion 35 formed by the upper surface 31 and the front surface 33. That is, in the corner portion 35, a mixed gas of air and hydrogen flows toward the front surface 33, hits the front surface 33 to turn upward, and then hits the upper surface 31 to turn further and flows toward the rear surface 32.

水素流入口31aから希釈装置内部に流入した水素は、矢印Y2に示す渦により拡散する結果、空気流入口32aから流入した空気によって希釈される。希釈された水素は、矢印Y1に示す気流に乗って希釈ガス流出口32cから流出する。このように、空気流入口から希釈ガス流出口へと向かう気流(矢印Y1に示す気流)の流路が曲線状であることにより、矢印Y2に示す渦が発生し、この渦により水素の希釈効果が向上する。上記流路が直線状である場合に比べて、希釈装置内部における水素の拡散の度合いが高まり、ひいては水素の希釈効果が高まる。 The hydrogen flowing into the diluter from the hydrogen inlet 31a is diffused by the vortex shown by the arrow Y2, and as a result, is diluted by the air flowing in from the air inlet 32a. The diluted hydrogen rides on the air flow indicated by the arrow Y1 and flows out from the dilution gas outlet 32c. As described above, since the flow path of the air flow (the air flow indicated by the arrow Y1) from the air inlet to the diluting gas outlet is curved, the vortex indicated by the arrow Y2 is generated, and the vortex indicates the hydrogen dilution effect. Is improved. Compared with the case where the flow path is linear, the degree of diffusion of hydrogen inside the diluting device is enhanced, and the hydrogen diluting effect is enhanced.

上記実施形態の注目すべき点について以下に整理する。
[その1]
希釈装置3は、ボックス状であり、希釈対象のガスが流入するガス流入口31aと、外部の空気が流入する空気流入口32aと、流入した空気により希釈されたガスが流出するガス流出口32cとを備えている。そして、希釈装置3の第1の面すなわち上面31にガス流入口31aが設けられ、第1の面とは異なる前記希釈装置の第2の面すなわち後面32に空気流入口32a及びガス流出口32cが設けられている。
空気流入口32a及びガス流出口32cが同一面に設けられているため、空気流入口32aからガス流出口32cへと向かう気流の流れ方向が途中で180度変わる。これにより、矢印Y2に示すような渦が発生する。このかかる渦に希釈対象ガス(水素)を滞留させることで希釈効果が向上する。さらには、空気流入口とガス流出口が設けられた後面32以外の面の外側において他部品のレイアウトがしやすい。
The points to be noted in the above-described embodiment will be summarized below.
[Part 1]
The diluting device 3 is box-shaped, and has a gas inlet 31a into which a gas to be diluted flows, an air inlet 32a into which external air flows, and a gas outlet 32c from which a gas diluted by the inflowing air flows out. It has and. A gas inlet 31a is provided on the first surface or upper surface 31 of the diluting device 3, and an air inlet 32a and a gas outlet 32c are provided on the second surface or rear surface 32 of the diluting device different from the first surface. Is provided.
Since the air inlet 32a and the gas outlet 32c are provided on the same plane, the flow direction of the air flow from the air inlet 32a to the gas outlet 32c changes by 180 degrees on the way. As a result, a vortex as shown by arrow Y2 is generated. The dilution effect is improved by allowing the gas to be diluted (hydrogen) to stay in this vortex. Furthermore, it is easy to lay out other components outside the surface other than the rear surface 32 where the air inlet and the gas outlet are provided.

[その2]
第1の面31及び第2の面32のいずれとも異なる希釈装置3の第3の面すなわち前面33の一部(具体的には前面33の下部)が希釈装置3の外側に突出してなる袋形状部33aが形成されている。これにより、袋形状部33aの内側に袋状の空間33aが生まれる。この空間33aは希釈装置3の内部空間の一部をなす。
これにより、矢印Y1に示す気流に起因して、空間33aにおいて矢印Y3に示す渦が発生する。すなわち、空間33aの車両後方領域において、空気と水素の混合気体が下面34に向かって流れ、下面34に当たることで向きが前向きになり、その後袋形状部33aに当たることでさらに向きが変わり、後面32に向かって流れる。
このように袋形状部を設けることでその内部の袋状の空間に、矢印Y3に示す渦が発生する。かかる渦に水素が滞留することで、希釈性能がさらに向上する。
[Part 2]
The third surface of the diluting device 3, which is different from both the first surface 31 and the second surface 32, that is, a part of the front surface 33 (specifically, the lower part of the front surface 33) projects outside the diluting device 3. The shaped portion 33a 1 is formed. As a result, a bag-shaped space 33a is created inside the bag-shaped portion 33a 1 . This space 33 a forms a part of the internal space of the diluting device 3.
As a result, the vortex shown by the arrow Y3 is generated in the space 33a due to the air flow shown by the arrow Y1. That is, in the vehicle rear region of the space 33a, the mixed gas of air and hydrogen flows toward the lower surface 34, hits the lower surface 34 to change its direction to the front, and then hits the bag-shaped portion 33a 1 to change its direction further. Flow toward 32.
By providing the bag-shaped portion in this manner, a vortex shown by an arrow Y3 is generated in the bag-shaped space inside thereof. The retention of hydrogen in such vortices further improves the dilution performance.

[その3]
袋形状部は少なくとも1つ設けることができる。袋形状部が単一であれば、複数である場合に比べて、希釈装置の、袋形状部以外の部位周辺に、他の部品を配置することができる。すなわち、部品レイアウトの選択肢を増やすことができる。
[Part 3]
At least one bag-shaped portion can be provided. If the bag-shaped portion is single, other parts can be arranged around the portion other than the bag-shaped portion of the diluting device as compared with the case where the bag-shaped portion is plural. That is, the choices of component layout can be increased.

[その4]
袋形状部33aとガス流出口32cとの距離が、袋形状部33aと空気流入口32aとの距離よりも短い。そのため、ガス流出口32cに向かって流れるガスの一部を、ガス流出口32cにより近い袋形状部の渦に滞留させることができる。これにより、効率的な希釈が期待できる。
[Part 4]
The distance between the bag-shaped portion 33a 1 and the gas outlet 32c is shorter than the distance between the bag-shaped portion 33a 1 and the air inlet 32a. Therefore, a part of the gas flowing toward the gas outlet 32c can be retained in the vortex of the bag-shaped portion closer to the gas outlet 32c. As a result, efficient dilution can be expected.

[その5]
先に述べたように、希釈装置の上面31を第1の面と呼び、第1の面に接する側面(後面)32を第2の面と呼び、前記第1の面に接するとともに前記第2の面と対向する側面(前面)33を第3の面と呼ぶことができる。そして、ガス流入口31aが第2の面よりも第3の面に近接して設けられ、第1の面から見て、ガス流出口32cは空気流入口32aよりも離れて配置されている。
これにより、矢印Y2に示す渦が発生する隅部35に水素が排出されるため、水素をより対流させやすくなり、希釈性能が向上する。
[Part 5]
As described above, the upper surface 31 of the diluting device is referred to as a first surface, and the side surface (rear surface) 32 in contact with the first surface is referred to as a second surface, which is in contact with the first surface and the second surface. The side surface (front surface) 33 opposite to the surface can be called the third surface. The gas inlet 31a is provided closer to the third surface than the second surface, and the gas outlet 32c is arranged farther from the air inlet 32a when viewed from the first surface.
As a result, hydrogen is discharged to the corner portion 35 where the vortex shown by the arrow Y2 is generated, so that hydrogen is more easily convected and the dilution performance is improved.

[その6]
希釈装置3の上下方向に沿った袋形状部33aの長さH2が、希釈装置3の高さH1の半分以下とすることができる。そのため、希釈装置全体との関係で空間33aを比較的小さくなり、より効果的に渦(矢印Y3)を発生させることができる。これにより希釈効果が向上する。
[Part 6]
The length H2 of the bag-shaped portion 33a 1 along the vertical direction of the diluting device 3 can be half or less of the height H1 of the diluting device 3. Therefore, the space 33a becomes relatively small in relation to the entire diluting device, and the vortex (arrow Y3) can be generated more effectively. This improves the dilution effect.

[その7]
希釈装置3の内部に、空気流入口32aとガス流出口32cとから略等距離に位置し、空気流入口とガス流出口とを結ぶ線に平行な回転軸を有するプロペラ36をさらに設けることができる。このプロペラの回転により水素が攪拌されて希釈性能が上がる。
[Part 7]
Inside the diluting device 3, a propeller 36 having an axis of rotation parallel to a line connecting the air inflow port and the gas outflow port, which is located approximately equidistant from the air inflow port 32a and the gas outflow port 32c, may be further provided. it can. The rotation of the propeller agitates the hydrogen to improve the dilution performance.

[その8]
希釈対象のガスが燃料電池2から排出される水素であり、第1の面の上方に燃料電池2が配置されている。そのため、希釈装置周辺の燃料電池の設置されていない部分に他の部品を配置することができる。つまり、部品配置の自由度が高まる。また、希釈装置3を燃料電池2の下側かつ隣接するように設置することで、主に燃料電池2からパージ時に排出される水素のための配管を、曲げ点の少ないもの、すなわち直線状のものとすることができる。さらに、重力方向にパージ水素に含まれる水分が流れるため、配管内に水が溜まることがない。これにより、配管内での凍結発生を抑えることができる。
[Part 8]
The gas to be diluted is hydrogen discharged from the fuel cell 2, and the fuel cell 2 is arranged above the first surface. Therefore, other parts can be arranged in the portion around the diluter where the fuel cell is not installed. That is, the degree of freedom in arranging components is increased. Further, by installing the diluting device 3 below and adjacent to the fuel cell 2, the piping for hydrogen mainly discharged from the fuel cell 2 at the time of purging has a small number of bending points, that is, a straight line. Can be something. Furthermore, since the water contained in the purged hydrogen flows in the direction of gravity, water does not collect in the pipe. As a result, the occurrence of freezing in the pipe can be suppressed.

[その9]
前記ガス流出口の断面積が前記空気流入口の断面積よりも小さいものとすることができる。空気の流入速度に対して希釈ガスの流出速度を小さくすることで、希釈装置内部でガスを滞留させることができ、希釈性能が向上する。
[Part 9]
The cross-sectional area of the gas outlet may be smaller than the cross-sectional area of the air inlet. By making the outflow rate of the diluting gas smaller than the inflow rate of the air, the gas can be retained inside the diluting device, and the diluting performance is improved.

[その10]
外部の空気を送り込むファン32bが空気流入口32aに接続されている。ファン32bは空気流入口に対して、直接的に接続されていてもよいし、ホース等の別部材(不図示)を通して間接的に接続されていてもよい。そのため、希釈装置自体の配置や希釈装置と他の周辺部品との配置を考慮してファンの位置を決めることができる。つまり、レイアウトの自由度が高まる。
[Part 10]
A fan 32b that sends in external air is connected to the air inlet 32a. The fan 32b may be directly connected to the air inlet, or may be indirectly connected to the air inlet through another member (not shown) such as a hose. Therefore, the position of the fan can be determined in consideration of the arrangement of the diluting device itself and the disposition of the diluting device and other peripheral components. That is, the degree of freedom in layout is increased.

[その他]
空気流入口32aは、後面32の高さ方向上半分の領域に形成するとともに、希釈水素排出口32cは、後面32の高さ方向下半分の領域に形成することができる。これにより、空気流入口32aと希釈水素排出口(ガス流出口)32cとがいずれも後面32の上面31に近い位置にある場合に比べて、ガス流入口とガス流出口の距離が長くなるため希釈効果が高い。
[Other]
The air inlet 32a can be formed in the upper half region of the rear surface 32 in the height direction, and the diluted hydrogen discharge port 32c can be formed in the lower half region of the rear surface 32 in the height direction. As a result, the distance between the gas inlet and the gas outlet becomes longer than in the case where both the air inlet 32a and the diluted hydrogen outlet (gas outlet) 32c are located near the upper surface 31 of the rear surface 32. High dilution effect.

希釈対象となるガスは、水素以外のガスを燃料ガスとする燃料電池から排出される燃料ガスであってもよい。さらには、希釈対象となるガスは、燃料電池以外の装置から排出されるガスであってもよい。 The gas to be diluted may be a fuel gas discharged from a fuel cell using a gas other than hydrogen as a fuel gas. Furthermore, the gas to be diluted may be a gas discharged from a device other than the fuel cell.

以上、本発明の実施の形態につき述べたが、本発明は既述の実施の形態に限定されるものではなく、本発明の技術的思想に基づいて各種の変形及び変更が可能である。 Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made based on the technical idea of the present invention.

2 燃料電池

3 希釈装置
31 上面
31a ガス流入口
32 後面
32a 空気流入口
32b ファン
32c ガス流出口
33 前面
33a 空間
33a 袋形状部
34 下面
35 隅部
36 プロペラ
2 Fuel cell

3 Diluting device 31 Upper surface 31a Gas inlet 32 Rear surface 32a Air inlet 32b Fan 32c Gas outlet 33 Front surface 33a Space 33a 1 Bag-shaped portion 34 Lower surface 35 Corner 36 Propeller

Claims (10)

希釈対象のガスが流入するガス流入口と、
外部の空気が流入する空気流入口と、
前記空気により希釈された前記ガスが流出するガス流出口と
を備えたボックス状の希釈装置であって、
前記希釈装置の第1の面に前記ガス流入口が設けられ、
前記第1の面とは異なる前記希釈装置の第2の面に前記空気流入口及び前記ガス流出口が設けられている、希釈装置。
A gas inlet into which the gas to be diluted flows,
An air inlet into which outside air flows,
A box-shaped diluting device having a gas outlet through which the gas diluted with the air flows out,
The first side of the diluter is provided with the gas inlet,
The diluter, wherein the air inlet and the gas outlet are provided on a second surface of the diluter different from the first surface.
前記第1の面及び前記第2の面のいずれとも異なる前記希釈装置の第3の面の一部が前記希釈装置の外側に突出してなる袋形状部が形成されている、請求項1に記載の希釈装置。 The bag-shaped portion is formed in which a part of the third surface of the diluting device that is different from both the first surface and the second surface protrudes to the outside of the diluting device. Diluter. 単一の前記袋形状部が設けられている、請求項2に記載の希釈装置。 The diluting device according to claim 2, wherein a single bag-shaped portion is provided. 前記袋形状部と前記ガス流出口との距離が、前記袋形状部と前記空気流入口との距離よりも短い、請求項2又は3に記載の希釈装置。 The diluting device according to claim 2 or 3, wherein a distance between the bag-shaped portion and the gas outlet is shorter than a distance between the bag-shaped portion and the air inlet. 前記第1の面が前記希釈装置の上面であり、
前記第2の面が前記第1の面に接する側面であり、
前記第3の面が前記第1の面に接するとともに前記第2の面と対向する側面であり、
前記空気流入口が前記第2の面の高さ方向上半分の領域に形成され、
前記ガス流出口が前記第2の面の高さ方向下半分の領域に形成されている、
請求項2〜4のいずれか一項に記載の希釈装置。
The first surface is the top surface of the diluter,
The second surface is a side surface in contact with the first surface,
The third surface is a side surface that is in contact with the first surface and faces the second surface,
The air inlet is formed in a region of an upper half in a height direction of the second surface,
The gas outlet is formed in the lower half region in the height direction of the second surface,
The diluting device according to any one of claims 2 to 4.
前記希釈装置の上下方向に沿った前記袋形状部の長さが前記希釈装置の高さの半分以下である、請求項5に記載の希釈装置。 The diluting device according to claim 5, wherein the length of the bag-shaped portion along the vertical direction of the diluting device is equal to or less than half the height of the diluting device. 前記希釈装置の内部に、前記空気流入口と前記ガス流出口とから略等距離に位置し、前記空気流入口と前記ガス流出口とを結ぶ線に平行な回転軸を有するプロペラをさらに備える請求項5又は6に記載の希釈装置。 The diluter further comprises a propeller located substantially equidistant from the air inlet and the gas outlet and having a rotation axis parallel to a line connecting the air inlet and the gas outlet. Item 5. The diluting device according to item 5 or 6. 前記希釈対象のガスが燃料電池から排出される水素であり、
前記第1の面の上方に前記燃料電池が配置されている、
請求項5〜7のいずれか一項に記載の希釈装置。
The gas to be diluted is hydrogen discharged from the fuel cell,
The fuel cell is disposed above the first surface,
The diluting device according to any one of claims 5 to 7.
前記ガス流出口の断面積が前記空気流入口の断面積よりも小さい、請求項1〜8のいずれか一項に記載の希釈装置。 The diluting device according to claim 1, wherein a cross-sectional area of the gas outlet is smaller than a cross-sectional area of the air inlet. 前記外部の空気を送り込むファンが前記空気流入口に接続されている、請求項1〜9のいずれか一項に記載の希釈装置。 The diluting device according to any one of claims 1 to 9, wherein a fan that sends in the external air is connected to the air inlet.
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