公开(公告)号：US20180033601A1

公开(公告)日：2018-02-01

申请号：US15727696

申请日：2017-10-09

Applicant: Yongqiang Qiu

Inventor： Yongqiang Qiu

IPC: H01J49/04 ,  H01J49/24 ,  H01J49/00

CPC classification number: H01J49/0422 ,  H01J49/0022 ,  H01J49/0404 ,  H01J49/24

Abstract: Atmospheric sampling system designed to minimize cross-contamination between successive samples acquired by a portable, or handheld, mass spectrometer. Techniques to reduce the overall sample load on portable mass spectrometers having limited pumping capacity, such as capture pumps. Techniques and methods employing simple manual devices and micro vacuum pumps for purging the inlet system of a mass spectrometer. Reduction of cross-contamination between successive samples, permitting a portable mass spectrometer to correctly associate sample positives with specific sample sites or individuals.

公开(公告)号：US20160056029A1

公开(公告)日：2016-02-25

申请号：US14466918

申请日：2014-08-22

Applicant: Yongqiang Qiu

Inventor： Yongqiang Qiu

IPC: H01J49/04 ,  H01J49/24

CPC classification number: H01J49/0422 ,  H01J49/0022 ,  H01J49/0404 ,  H01J49/24

Abstract: Atmospheric sampling system designed to minimize cross-contamination between successive samples acquired by a portable, or handheld, mass spectrometer. Techniques to reduce the overall sample load on portable mass spectrometers having limited pumping capacity, such as capture pumps. Techniques and methods employing simple manual devices and micro vacuum pumps for purging the inlet system of a mass spectrometer. Reduction of cross-contamination between successive samples, permitting a portable mass spectrometer to correctly associate sample positives with specific sample sites or individuals.

Abstract translation: 大气采样系统设计用于最小化由便携式或手持式质谱仪获取的连续样品之间的交叉污染。 降低泵送能力有限的便携式质谱仪上的样品总量的技术，例如捕集泵。 使用简单的手动装置和微型真空泵清洗质谱仪入口系统的技术和方法。 减少连续样品之间的交叉污染，允许便携式质谱仪正确地将样品阳性与特定样品位点或个体相关联。

公开(公告)号：US08829425B1

公开(公告)日：2014-09-09

申请号：US14228379

申请日：2014-03-28

Applicant: William (Wei) Yang ,  Charlie Zhang ,  Ming Chai ,  Yongqiang Qiu ,  Doneil Hoekman

Inventor： William (Wei) Yang ,  Charlie Zhang ,  Ming Chai ,  Yongqiang Qiu ,  Doneil Hoekman

IPC: H01J49/26 ,  H01J49/10 ,  B01D59/44 ,  H01J49/00 ,  H01J49/24

CPC classification number: H01J49/24 ,  H01J49/0022

Abstract: A portable or handheld mass spectrometer making use of a cryogenic pumping, ion pumping or getter pumping system. The portable mass spectrometer contains a cryopump, ion pump, or getter pump, and operates in conjunction with a fixed docking station. The docking station contains a backing pump to bring the mass spectrometer manifold down to operating pressure prior to being placed into portable operation using the cryopump, ion pump, or getter pump. The individual pumps may be operated either separately or simultaneously. This configuration permits the portable mass spectrometer module to be small, lightweight and rugged, and yet be easily and quickly recharged and regenerated for use in either a field or laboratory environment.

Abstract translation: 使用便携式或手持式质谱仪，利用低温泵送，离子泵送或吸气剂泵送系统。 便携式质谱仪包含一个低温泵，离子泵或吸气泵，并与一个固定的对接站配合使用。 对接站包含背衬泵，以便在使用低温泵，离子泵或吸气泵进入便携式操作之前将质谱仪歧管降至工作压力。 单独的泵可以单独地或同时地操作。 该配置允许便携式质谱模块小型，重量轻且坚固，并且容易且快速地再充电和再生以用于现场或实验室环境中。

公开(公告)号：US10228167B2

公开(公告)日：2019-03-12

申请号：US14130263

申请日：2012-06-29

Applicant: Kevin P. Flynn ,  Yongqiang Qiu ,  HaeYong Moon

Inventor： Kevin P. Flynn ,  Yongqiang Qiu ,  HaeYong Moon

IPC: F25B49/00 ,  F25B29/00 ,  F25B9/00

Abstract: In accordance with an embodiment of the invention, there is provided a method of warming a heat exchanger array of a very low temperature refrigeration system, the method comprising diverting at least a portion of refrigerant flow in the refrigeration system away from a refrigerant flow circuit used during very low temperature cooling operation of the refrigeration system, to effect warming of at least a portion of the heat exchanger array; and while diverting the at least a portion of refrigerant flow, preventing excessive refrigerant mass flow through a compressor of the refrigeration system.

公开(公告)号：US20140144165A1

公开(公告)日：2014-05-29

申请号：US14130263

申请日：2012-06-29

Applicant: Kevin P. Flynn ,  Yongqiang Qiu ,  HaeYong Moon

Inventor： Kevin P. Flynn ,  Yongqiang Qiu ,  HaeYong Moon

IPC: F25B29/00

CPC classification number: F25B29/003 ,  F25B9/00 ,  F25B49/005 ,  F25B2400/04 ,  F25B2600/2501

Abstract: In accordance with an embodiment of the invention, there is provided a method of warming a heat exchanger array of a very low temperature refrigeration system, the method comprising diverting at least a portion of refrigerant flow in the refrigeration system away from a refrigerant flow circuit used during very low temperature cooling operation of the refrigeration system, to effect warming of at least a portion of the heat exchanger array; and while diverting the at least a portion of refrigerant flow, preventing excessive refrigerant mass flow through a compressor of the refrigeration system.

Abstract translation: 根据本发明的实施例，提供了一种加热非常低温制冷系统的热交换器阵列的方法，该方法包括将制冷系统中的至少一部分制冷剂流转向远离制冷剂流动回路 在制冷系统的非常低的冷却操作期间，使至少一部分热交换器阵列变暖; 并且在分流至少一部分制冷剂流动的同时，防止过量的制冷剂质量流过制冷系统的压缩机。