WO2023218795A1 - 車両搭載型のドレンセパレータ、及び、車両搭載型の排ガス分析装置 - Google Patents
車両搭載型のドレンセパレータ、及び、車両搭載型の排ガス分析装置 Download PDFInfo
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- WO2023218795A1 WO2023218795A1 PCT/JP2023/013691 JP2023013691W WO2023218795A1 WO 2023218795 A1 WO2023218795 A1 WO 2023218795A1 JP 2023013691 W JP2023013691 W JP 2023013691W WO 2023218795 A1 WO2023218795 A1 WO 2023218795A1
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- exhaust gas
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- drain separator
- heat radiation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N1/2252—Sampling from a flowing stream of gas in a vehicle exhaust
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/10—Testing internal-combustion engines by monitoring exhaust gases or combustion flame
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N1/2252—Sampling from a flowing stream of gas in a vehicle exhaust
- G01N2001/2255—Sampling from a flowing stream of gas in a vehicle exhaust with dilution of the sample
Definitions
- the passage area of the exhaust gas heat dissipation passage may be formed larger than the opening area of the exhaust gas introduction port.
- the first exhaust gas heat radiation flow path is connected to the dilution gas flow path. It is sufficient that the flow path is formed as an internal flow path within the flow path forming block.
- the condensed water storage section may be provided at the lower part of the second exhaust gas heat radiation flow path.
- the exhaust gas flow path and the dilution gas flow path may be placed close to each other. It is sufficient if it is provided so that the Further, if moisture can be sufficiently condensed from the exhaust gas on the upstream side of the exhaust gas flow path, the dew condensation water storage section may be provided only on the upstream side of the exhaust gas flow path.
- a vehicle-mounted exhaust gas analyzer comprising a vehicle-mounted drain separator according to the present invention and an analyzer for analyzing exhaust gas, and configured such that the exhaust gas that has passed through the analyzer is introduced into the drain separator. If so, water can be removed from the exhaust gas after analysis without increasing power consumption, so for example, condensation downstream of the drain separator can cause a pressure increase in the pipes, causing problems in the exhaust gas flow. can be prevented. Therefore, it is possible to ensure highly accurate analysis. In addition, since pressure rise in the piping is less likely to occur, it is possible to perform analysis satisfactorily even with, for example, an exhaust pump with a low discharge pressure.
- the dilution air which was conventionally used only to dilute the exhaust gas, can be used for heat dissipation of the exhaust gas, and the moisture contained in the exhaust gas can be removed. can be sufficiently removed.
- each flow path it is possible to generate heat exchange between the exhaust gas and the air, which improves the ability to remove moisture from the exhaust gas compared to conventional methods, without generating new power consumption. You can do it like this.
- FIG. 3 is a schematic cross-sectional view showing a dilution gas flow path in the flow path forming block in the first embodiment.
- FIG. 3 is a schematic cross-sectional view showing a second exhaust gas heat radiation flow path in the first embodiment.
- FIG. 3 is a schematic diagram showing an outline of each flow path configuration of a drain separator in a second embodiment.
- FIG. 1 is a schematic diagram showing the configuration of a conventional vehicle-mounted exhaust gas analyzer.
- the detector uses a quantum photoelectric element, and in this embodiment, InAsSb is used as the detection element.
- the detection element is not limited to this, and for example, HgCdTe, InGaAs, PbSe, etc. may be used.
- the information processing unit COM is a dedicated or general-purpose computer that has a CPU, internal memory, A/D converter, D/A converter, various input/output devices, etc. Acquire and process, record, or display data from a group of sensors.
- FIGS. 2 and 3 are schematic diagrams.
- the drain separator 100 of the present embodiment includes not only an exhaust gas flow path EL through which exhaust gas flows, but also a dilution gas flow path AL through which air flows before diluting the exhaust gas.
- the exhaust gas before dilution flowing through the exhaust gas flow path EL is configured to be cooled using the air flowing through the dilution gas flow path AL.
- the exhaust gas flow path EL and the dilution gas flow path AL are provided close to each other, and heat transfer occurs between the gases flowing through the respective flow paths.
- a heat conducting structure is provided.
- the drain separator 100 of this embodiment is configured so that heat exchange occurs between the exhaust gas before dilution flowing through each flow path and the air before being mixed with the exhaust gas.
- the exhaust gas flow path EL and the dilution gas flow path AL are provided close to each other with a distance of, for example, 550 mm or less.
- the exhaust gas flow path EL and the dilution gas flow path AL may be arranged close to each other by 350 mm or 255 mm, or the respective flow paths may be provided so as to be substantially in contact with each other.
- the dilution gas flow path AL is open to the air at its base end and is configured to take in air from the outside of the drain separator 100 or the exhaust gas analyzer 200.
- the base end of the dilution gas flow path AL opens into a casing (not shown) that houses the drain separator 100 therein.
- a confluence point CP with the exhaust gas flow path EL is provided at the downstream end of the dilution gas flow path AL, and the exhaust gas is diluted by mixing the exhaust gas and air at the confluence point CP.
- a diluted exhaust gas flow path DL through which exhaust gas diluted with air flows is connected to the downstream side of the confluence point CP, and an exhaust pump P is provided on this diluted exhaust gas flow path DL. That is, exhaust gas and air are sucked in by one exhaust pump P, and are configured to flow through each of the exhaust gas flow path EL and the dilution gas flow path AL.
- the exhaust gas flow path EL includes a first exhaust gas heat radiation flow path EL1 that forms an upstream portion of the exhaust gas flow path EL, and a second exhaust gas heat radiation flow path EL2 that forms a downstream portion of the exhaust gas flow path EL.
- the first exhaust gas heat radiation flow path EL1 is connected to the exhaust gas introduction port EP, and is formed on the upper side of the drain separator 100 as shown in FIG.
- the first exhaust gas heat radiation flow path EL1 is formed as an internal flow path within one flow path forming block 1 together with the dilution gas flow path AL. That is, the first exhaust gas heat dissipation flow path EL1 and the dilution air flow path are adjacent to each other via the thermally conductive metal forming the flow path forming block 1, and between the exhaust gas and air flowing through the respective flow paths. Heat exchange occurs.
- the exhaust gas since the exhaust gas was heated to, for example, 100 degrees or more before being introduced into the analyzer X, the exhaust gas has a higher temperature than, for example, the air taken in from the outside, which is at about the same temperature. Therefore, heat transfer from the exhaust gas to the air occurs, and the exhaust gas flowing through the first exhaust gas heat radiation flow path EL1 continues to radiate heat to the air flowing through the dilution gas flow path AL.
- the second exhaust gas heat radiation flow path EL2 is provided on the downstream side of the first exhaust gas heat radiation flow path EL1, and merges with the dilution gas flow path AL at the confluence point CP. More specifically, the second exhaust gas heat dissipation flow path EL2 is formed on the lower side of the drain separator 100, and includes a meandering flow path formed in the housing 2 and a part of the flow path forming block 1. Consisting of Further, as shown in FIG. 3, the first exhaust gas heat radiation flow path EL1 and the second exhaust gas heat radiation flow path EL2 are arranged to vertically sandwich the dilution gas flow path AL on the upstream side of the confluence point CP. .
- the drain separator 100 has a generally rectangular parallelepiped shape. As shown in FIG. 5, the drain separator 100 includes a flow path forming block 1 constituting an upper end surface, a housing 2 welded to the lower side of the flow path forming block 1, and a housing 2 housed within the housing 2 and containing a flow path.
- the heat transfer mechanism 3 is provided in contact with the lower surface side of the path forming block 1.
- a first exhaust gas heat radiation flow path EL1 and a dilution gas flow path AL are formed as internal flow paths.
- a second exhaust gas heat radiation flow path EL2 is formed.
- the channel forming block 1 has a generally plate-like shape, and as shown in FIGS. 6 and 7, independent internal channels are formed in two layers in the thickness direction.
- the internal flow path is formed by, for example, performing drilling or the like and then sealing unnecessary portions.
- the channel forming block 1 may be formed using, for example, metal 3D printer technology instead of machining.
- FIG. 6(b) which is a cross-sectional view taken along line A-A in FIG. It is formed.
- the exhaust gas that has passed through the analyzer X is introduced into the flow path forming block 1 from the exhaust gas inlet EP located on the upper right side in FIG. 6(b). After winding inside the flow path forming block 1, the exhaust gas opens at the lower left portion of FIG. 6(b), extends in the thickness direction of the flow path forming block 1, and opens at the lower surface side of the flow path forming block 1.
- the liquid flows into the space formed by the housing 2 through the first communication hole CH1.
- FIG. 7(b) which is a sectional view taken along the line BB in FIG. It is formed as. Air taken in from the outside air is introduced into the flow path forming block 1 through the air introduction port provided on the upper left side in FIG. 7(b). After winding through the flow path forming block 1, the air reaches the downstream end of the dilution gas flow path AL located on the upper left side of FIG. 7(b). A second communication hole CH2 extending in the thickness direction of the flow path forming block 1 and opening at the lower surface of the flow path forming block 1 is formed at this downstream end. Exhaust gas flows from the second exhaust gas heat radiation flow path EL2 in the housing 2 to the dilution gas flow path AL through this second communication hole CH2.
- the part where the second communication hole CH2 is formed is the confluence point CP of the exhaust gas flow path EL and the dilution gas flow path AL, and after the exhaust gas and air are mixed here, they are sent to the exhaust pump P as diluted exhaust gas. It will flow.
- FIG. 8 is a view of the approximately rectangular parallelepiped housing 2 of the drain separator 100 and the heat transfer mechanism 3 housed within the housing 2, viewed from the top side.
- the casing 2 and the heat transfer mechanism 3 form a second exhaust gas heat dissipation passage EL2 that flows in the lower part of the drain separator 100 in a meandering manner.
- the heat transfer mechanism 3 is in the flow direction of the second exhaust gas heat radiation flow path EL2, and includes three partition plates 31 extending along the longitudinal direction of the housing 2; Four heat absorbing plates 32 are provided so as to be orthogonal to each other and to block the flow direction of the second exhaust gas heat radiation flow path EL2.
- a notch CT is formed in the center of one end of the partition plate in the longitudinal direction, and a gap is formed between it and the casing 2. This gap allows exhaust gas to flow in the vertical direction in FIG.
- the partition plates are oriented in alternate directions, the second exhaust gas heat radiation flow path EL2 has a meandering shape.
- the vehicle-mounted drain separator 100 of the first embodiment configured in this way, heat exchange occurs between the exhaust gas flowing in the exhaust gas flow path EL and the air flowing in the dilution gas flow path AL. This makes it possible to increase the exhaust gas cooling capacity and sufficiently condense and remove moisture in the exhaust gas without increasing power consumption compared to the conventional method.
- the drain separator 100 itself can be configured compactly, while maintaining the flow between the exhaust gas and air.
- the distance over which heat is exchanged can be increased. Therefore, the amount of heat transferred from the exhaust gas to the air can be further increased, and the ability to remove moisture from the exhaust gas can be improved.
- the dew condensation water is removed from the surface of the heat absorption plate 32.
- the condensed water can be deposited and collected and directly collected into the condensed water storage section 4 located below the drain separator 100 efficiently.
- the passage area of the second exhaust gas heat radiation passage EL2 provided on the downstream side is configured to be larger than the passage area of the first exhaust gas heat radiation passage EL1, the condensed water storage section It is possible to reduce the flow velocity of the exhaust gas flowing through the second exhaust gas heat dissipation flow path EL2 having the exhaust gas flow path EL2, lengthen the residence time, and increase the probability that more moisture is collected by the heat absorption plate 32.
- the vehicle-mounted drain separator 100 of the second embodiment has a simplified configuration compared to the first embodiment. Specifically, on the upstream side of the confluence point CP of the dilution gas flow path AL and the exhaust gas flow path EL, the dilution gas flow path AL and the exhaust gas flow path EL are provided in parallel and close to each other. That is, the casing 2 forming the exhaust gas flow path EL and the condensed water reservoir 4 and the piping forming the dilution gas flow path AL with respect to the casing 2 are provided in contact with each other. Note that in the second embodiment, the exhaust gas passage EL is not provided with the heat absorption plate 32 in the first embodiment, and there is no member that blocks the exhaust gas in the flow direction.
- the air before diluting the exhaust gas can remove heat from the exhaust gas to lower its temperature and cause moisture to condense in the exhaust gas flow path EL. Furthermore, since there is no need to form a complicated flow path, the manufacturability of the drain separator 100 can also be improved.
- the configuration for causing heat exchange between the exhaust gas flowing through the exhaust gas flow path and the air flowing through the dilution gas flow path is not limited to that shown in the first and second embodiments.
- a first metal tube forming an exhaust gas flow path and a second metal tube forming a dilution gas flow path are provided separately from each other, and each tube is connected with a heat conductive member. Heat transfer may also occur from the exhaust gas to the air.
- a heat absorption plate was not provided in the first exhaust gas heat radiation flow path, but a heat absorption plate may be provided in the first exhaust gas flow path.
- the first exhaust gas heat dissipation flow path and the dilution gas flow path are not limited to those formed as internal flow paths within the flow path forming block, but may be formed using tubes, pipes, or the like. It is sufficient that the structure is such that heat transfer occurs between the exhaust gas flowing through the first exhaust gas heat radiation flow path and the air flowing through the dilution gas flow path, preferably by heat conduction.
- each flow path is formed in a meandering shape, but for example, the number of bends in each flow path may be increased or decreased, or the flow path may be formed only in straight lines.
- the heat absorption plate may be omitted in the second exhaust gas heat dissipation flow path, and moisture may be removed from the exhaust gas by, for example, causing dew condensation on the inner circumferential surface of the casing.
- the arrangement of the first exhaust gas heat radiation flow path and the second exhaust gas heat radiation flow path with respect to the dilution gas flow path is not limited to the arrangement in which they are sandwiched in the vertical direction as shown in the first embodiment.
- first exhaust gas heat radiation flow path and the second exhaust gas heat radiation flow path may be arranged so as to sandwich the dilution gas flow path in the horizontal direction.
- first exhaust gas heat radiation flow path and the second exhaust gas heat radiation flow path sandwiching the dilution gas flow path
- one flow path flows in parallel above the dilution gas flow path, and the other flow path flows in parallel.
- the gas may be arranged so as to flow in parallel on the side of the dilution gas flow path. That is, it is sufficient that both the first exhaust gas heat radiation flow path and the second exhaust gas heat radiation flow path are arranged so that heat exchange can occur between them and the dilution gas flow path.
- the object to be measured by the analyzer does not have to include all of the target gas components exemplified in each embodiment, and only some of them may be the target gas components. Further, the measurement principle of the analyzer can be appropriately selected depending on the target gas component.
- the gas flowed into the dilution gas flow path is not limited to the air taken in from the base end of the flow path.
- a cylinder filled with gas for diluting and cooling the exhaust gas may be connected to the base end of the dilution gas flow path, and the dilution and cooling gas may be supplied from the cylinder.
- the exhaust gas can be diluted after being cooled with gas supplied from the cylinder.
- the gas supplied from it can perform the two functions of cooling and diluting the exhaust gas, so even if the total weight of the exhaust gas analyzer increases, it can be adopted as a configuration. It's easy to do.
- the component of the gas flowed through the dilution gas flow path is not limited to air, and may be any other component that does not cause problems to the environment even if it is discharged to the outside after diluting the exhaust gas.
- a heat absorption plate may be provided to block the flow direction of the exhaust gas. Further, the number and diameter of the exhaust gas flow holes may be set as appropriate.
- a plurality of independent exhaust pumps may be used to suction the exhaust gas flowing through the exhaust gas flow path and suction the gas flowing through the dilution gas flow path.
- Exhaust gas analyzer 100 Drain separator AL: Dilution gas flow path
- EP Exhaust gas inlet
- EL Exhaust gas flow path
- EL1 First exhaust gas heat radiation flow path
- EL2 Second exhaust gas heat radiation flow path
- CP Confluence point
- Diluted exhaust gas Channel 1 Channel forming block
- CH1 First communication hole
- CH2 Second communication hole 2: Housing 3: Heat transfer mechanism 31: Partition plate CT: Notch 32: Heat absorption plate
- EH Exhaust gas distribution hole
- SL: Slit 4 Condensation water storage part
- COM Information processing part
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Abstract
Description
100 :ドレンセパレータ
AL :希釈用気体流路
EP :排ガス導入口
EL :排ガス流路
EL1 :第1排ガス放熱流路
EL2 :第2排ガス放熱流路
CP :合流点
DL :希釈排ガス流路
1 :流路形成ブロック
CH1 :第1連通孔
CH2 :第2連通孔
2 :筐体
3 :伝熱機構
31 :仕切板
CT :切り欠き
32 :吸熱板
EH :排ガス流通孔
SL :スリット
4 :結露水貯留部
COM :情報処理部
P :排気ポンプ
X :分析計
Claims (13)
- 車両搭載型の排ガス分析装置に用いられる車両搭載型のドレンセパレータであって、
排ガスが流れる排ガス流路と、
排ガスを希釈するための気体が流れており、下流端部に設けられた合流点において前記排ガス流路と合流する希釈用気体流路と、を備え、
前記合流点よりも少なくとも上流側において前記排ガス流路を流れる排ガスと前記希釈用気体流路を流れる気体との間で熱交換が生じるように構成されていることを特徴とする車両搭載型のドレンセパレータ。 - 前記排ガス流路が、
排ガス導入口から排ガスが導入される第1排ガス放熱流路と、
前記第1排ガス放熱流路の下流側に設けられ、前記合流点において前記希釈用気体流路と合流する第2排ガス放熱流路と、を具備し、
前記第2排ガス放熱流路に排ガスから結露した水分が貯留される結露水貯留部が設けられた請求項1記載の車両搭載型のドレンセパレータ。 - 前記第1排ガス放熱流路の流路面積が、前記排ガス導入口の開口面積よりも大きく形成されている請求項2記載の車両搭載型のドレンセパレータ。
- 前記第2排ガス放熱流路の流路面積が、前記第1排ガス放熱流路の流路面積よりも大きく形成されている請求項2記載の車両搭載型のドレンセパレータ。
- 前記第1排ガス放熱流路、又は、前記第2排ガス放熱流路において、排ガスの流れ方向を遮るように設けられるとともに、少なくとも1つの排ガス流通孔が形成された吸熱板をさらに備え、
前記吸熱板が、排ガスから吸熱した熱を、前記希釈用気体流路を流れる気体に伝熱するように構成された請求項2記載の車両搭載型のドレンセパレータ。 - 前記希釈用気体流路が、流路形成ブロック内の内部流路として形成されており、
前記吸熱板が、前記流路形成ブロックと接触させて設けられた請求項5記載の車両搭載型のドレンセパレータ。 - 前記第1排ガス放熱流路が前記希釈用気体流路とともに前記流路形成ブロック内の内部流路として形成されている請求項6記載の車両搭載型のドレンセパレータ。
- 前記第2排ガス放熱流路の下部に前記結露水貯留部が設けられた請求項2記載の車両搭載型のドレンセパレータ。
- 前記第1排ガス放熱流路と前記第2排ガス放熱流路とが、前記希釈用気体流路を挟み込むように配置された請求項2記載の車両搭載型のドレンセパレータ。
- 前記排ガス流路の流れ方向、又は、前記希釈用気体流路の流れ方向が少なくとも1度折り返すように構成されている請求項1記載の車両搭載型のドレンセパレータ。
- 前記排ガス流路と前記希釈用気体流路と近接させて設けられている請求項1記載の車両搭載型のドレンセパレータ。
- 請求項1乃至11いずれか一項に記載の車両搭載型のドレンセパレータと、
排ガスを分析する分析計と、を備え、
前記分析計を通過した排ガスが前記ドレンセパレータに導入されるように構成された車両搭載型の排ガス分析装置。 - 前記排ガス流路と前記希釈用気体流路の前記合流点の下流側に気体により希釈された排ガスが流れる希釈排ガス流路が設けられており、
前記希釈排ガス流路上に排気ポンプが設けられている請求項11記載の車両搭載型の排ガス分析装置。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380029838.0A CN118946795A (zh) | 2022-05-10 | 2023-03-31 | 车辆搭载型的排液分离器和车辆搭载型的排气分析装置 |
| JP2023524971A JP7433525B1 (ja) | 2022-05-10 | 2023-03-31 | 車両搭載型のドレンセパレータ、及び、車両搭載型の排ガス分析装置 |
| US18/836,230 US20250389625A1 (en) | 2022-05-10 | 2023-03-31 | Vehicle-mounted drain separator, and vehicle-mounted exhaust gas analysis device |
| DE112023002188.0T DE112023002188T5 (de) | 2022-05-10 | 2023-03-31 | Fahrzeugmontierter ablaufabscheider und fahrzeugmontierte abgasanalysevorrichtung |
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| JP2022077592 | 2022-05-10 | ||
| JP2022-077592 | 2022-05-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2026074884A1 (ja) * | 2024-10-03 | 2026-04-09 | 株式会社堀場製作所 | ガス分析装置、ガス分析方法及びガス分析システム |
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- 2023-03-31 US US18/836,230 patent/US20250389625A1/en active Pending
- 2023-03-31 JP JP2023524971A patent/JP7433525B1/ja active Active
- 2023-03-31 WO PCT/JP2023/013691 patent/WO2023218795A1/ja not_active Ceased
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| JPS59206741A (ja) * | 1983-05-11 | 1984-11-22 | Mitsubishi Heavy Ind Ltd | 固気混相流体の希釈方法および装置 |
| JPS63298133A (ja) * | 1987-05-29 | 1988-12-05 | Toyota Motor Corp | 微粒子サンプリング装置 |
| JPH06500851A (ja) * | 1990-09-04 | 1994-01-27 | キャタピラー インコーポレイテッド | ガス試料抽出装置と同装置に使用する希釈トンネル |
| US20080202261A1 (en) * | 2007-02-28 | 2008-08-28 | Gas Technology Institute | Apparatus and method for maintaining multi-component sample gas constituents in vapor phase during sample extraction and cooling |
| JP2010107304A (ja) * | 2008-10-29 | 2010-05-13 | Horiba Ltd | 排ガス希釈装置 |
| JP2018197711A (ja) * | 2017-05-24 | 2018-12-13 | 株式会社堀場製作所 | 排ガス分析装置及び排ガス分析方法 |
| WO2021193753A1 (ja) * | 2020-03-26 | 2021-09-30 | 株式会社堀場製作所 | 希釈器、分析システム、及び、分析方法 |
| KR20210124801A (ko) * | 2020-04-07 | 2021-10-15 | 한국전력공사 | 가스 희석장치 및 이를 구비하는 미세입자 측정장치 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2026074884A1 (ja) * | 2024-10-03 | 2026-04-09 | 株式会社堀場製作所 | ガス分析装置、ガス分析方法及びガス分析システム |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112023002188T5 (de) | 2025-04-30 |
| CN118946795A (zh) | 2024-11-12 |
| JP7433525B1 (ja) | 2024-02-19 |
| JPWO2023218795A1 (ja) | 2023-11-16 |
| US20250389625A1 (en) | 2025-12-25 |
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