公开(公告)号：US20250164453A1

公开(公告)日：2025-05-22

申请号：US18839954

申请日：2022-10-31

Applicant: SHIMADZU CORPORATION

Inventor： Wenjian LU ,  Shigeaki SHIBAMOTO

IPC: G01N30/40 ,  G01N30/02 ,  G01N30/32 ,  G01N30/46

Abstract: A gas analysis system (1) includes an inflow portion (C1) into which sample gas flows, a column (41, 42), a detector (50, 51) that detects a component in sample gas, a sampler module (M1) and a switching module (M2) including a plurality of valves (V1 to V10), and a controller (100) that independently controls the plurality of valves (V1 to V10). The controller (100) includes a storage (120) where function pattern information that defines correspondence between a plurality of basic functions and opening and closing patterns of the plurality of valves is stored and an output unit (110) that uses the function pattern information stored in the storage (120) to output control signals to the respective valves (V1 to V10).

公开(公告)号：US20240329015A1

公开(公告)日：2024-10-03

申请号：US18586063

申请日：2024-02-23

Applicant: SHIMADZU CORPORATION

Inventor： Shigeaki SHIBAMOTO ,  Wenjian LU

IPC: G01N30/46 ,  B01D53/02 ,  G01N30/02 ,  G01N30/32

CPC classification number: G01N30/46 ,  B01D53/025 ,  G01N30/32 ,  G01N2030/025 ,  G01N2030/328

Abstract: A gas analysis system includes a first column, a second column, a merge portion connected to an outlet of the first column and an outlet of the second column, a detector that detects a gas component introduced from the merge portion, a switching valve arranged between the first column and the merge portion, and a controller. The controller performs delay processing of switching the switching valve between open and closed states so that timing of start of introduction of the gas component separated in the first column into the detector is delayed to be later than timing of completion of introduction of the gas component separated in the second column into the detector.

公开(公告)号：US20250164454A1

公开(公告)日：2025-05-22

申请号：US18839959

申请日：2023-01-12

Applicant: SHIMADZU CORPORATION

Inventor： Wenjian LU ,  Shigeaki SHIBAMOTO

IPC: G01N30/66 ,  B01D53/02 ,  B01D53/30 ,  G01N30/02 ,  G01N30/46

Abstract: A gas analysis system (1) includes a first flow channel (L1) through which sample gas that has passed through a column (41, 42) over helium gas as carrier gas flows, a second flow channel (L2) through which sample gas that has passed through a column (43, 44) over nitrogen gas as carrier gas flows, a TCD (90) that detects components in gas by making use of a difference in thermal conductivity among the components, and a switching module (M3). The switching module (M3) is arranged among the first flow channel (L1), the second flow channel (L2), and the TCD (90), and configured to switch between a first state in which the TCD (90) is connected to the first flow channel (L1) and a second state in which the TCD (90) is connected to the second flow channel (L2).

公开(公告)号：US20210088155A1

公开(公告)日：2021-03-25

申请号：US16925007

申请日：2020-07-09

Applicant: Shimadzu Corporation

Inventor： Wenjian LU ,  Shigeaki SHIBAMOTO ,  Kazunori TAKAHASHI ,  Ayaka SATO

IPC: F16K99/00

Abstract: Provided is a micro-valve having a laminate structure capable of improving sealing performance when a foreign substance is mixed. The micro-valve 10 has a laminate structure and includes a base layer 20 and a diaphragm layer 30. The base layer is formed with an inlet port 23 for introducing a gas into the micro-valve and an outlet port for allowing the gas to flow outside. The diaphragm layer is arranged to face the base layer. The diaphragm layer switches the flowing and blocking of the gas from the inlet port to the outlet port by elastic deformation thereof. The diaphragm layer has a configuration in which a plurality of deformation regions 33 and a plurality of rigid body regions 34 are alternately formed, the deformation region being elastically deformable in accordance with an inflow of a pneumatic fluid into the micro-valve. The diaphragm layer closes at least one of the inlet port and the outlet port by elastic deformation of at least a part of the plurality of deformation regions.

公开(公告)号：US20210088484A1

公开(公告)日：2021-03-25

申请号：US16919789

申请日：2020-07-02

Applicant: Shimadzu Corporation

Inventor： Shigeaki SHIBAMOTO ,  Wenjian LU ,  Ayaka SATO

IPC: G01N30/38 ,  G01N1/24 ,  G01N30/06

Abstract: A gas sampler (30) is provided with a connection portion (C1) connectable to a sample tank (20), a sample loop (PL) for holding a sample gas introduced from the sample tank (20) to the connection portion (C1), pneumatic switching valves (V1 to V6) for switching a flow path connected to the sample loop (PL), a control piping (81) for transmitting a driving pressure to the switching valves (V1 to V6), a pump (31) for suctioning an inside of the sample loop (PL), and a pressure accumulation tank (80) for accumulating the pressure generated by the operation of the pump (31) as a source pressure.

公开(公告)号：US20210088421A1

公开(公告)日：2021-03-25

申请号：US16913357

申请日：2020-06-26

Applicant: Shimadzu Corporation

Inventor： Shigeaki SHIBAMOTO ,  Wenjian LU ,  Ayaka SATO

IPC: G01N1/22 ,  G01N30/32

Abstract: A gas sampler includes a connection portion connectable to an introduction piping connected to a sample tank, a switching valve for switching a connection state between the connection portion and a sample loop, a pump, and a control device. A buffer flow path between the sample loop and the pump is configured to be selectively connectable to any one of a plurality of buffer tanks different in volume. A volume of the buffer flow path is greater than a volume of the introduction piping by a predetermined amount. The control device operates the pump in a state in which the switching valve is in a closed state to set an inside of the buffer flow path to a negative pressure, and thereafter stops the pump and make the switching valve in an open state to fill the sample loop with a sample gas by using the negative pressure of the buffer flow path.

公开(公告)号：US20190219194A1

公开(公告)日：2019-07-18

申请号：US16217523

申请日：2018-12-12

Applicant: SHIMADZU CORPORATION

Inventor： Wenjian LU ,  Shigeaki SHIBAMOTO ,  Jun YANAGIBAYASHI

IPC: F16K99/00

CPC classification number: F16K99/0015

Abstract: A first flow path is connected to an inlet for introducing gas into a microvalve. A second flow path is connected to an outlet for allowing gas to flow out of the microvalve. A third flow path is for introducing a pneumatic fluid into the microvalve. A negative pressure generation mechanism (a pump) is for generating a negative pressure on the second flow path to suck gas from the first flow path forward the second flow path via the microvalve. A pressure adjustment mechanism (a connection flow path and a valve) is for reducing a pressure difference between the second flow path and the third flow path to prevent the inlet and the outlet from being blocked by a diaphragm layer in response to the negative pressure generated on the second flow path side.