An ion receiving device
An ion receiving, off-center technology, applied to the parts of the particle separator tube, etc., can solve the problems of large area, unstable air flow, and unstable air flow velocity, and achieve high ion receiving efficiency, stable air flow, and simple structure Effect
Active Publication Date: 2017-05-31
HARBIN INST OF TECH AT WEIHAI
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Problems solved by technology
[0002] In traditional ion mobility spectrometry or other similar mobility spectrometry, a metal plate is usually used as a receiving plate, and the airflow flows through the side of the pole piece. Due to the large area of the metal disc, the airflow is unstable. This phenomenon is manifested as , a trumpet-shaped low-pressure area appears in front of the receiving pole, and the airflow velocity at each point at different positions is not stable
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[0011] The present invention will be further described below in conjunction with the accompanying drawings.
[0012] The ion receiving device includes a metal pole piece 1, an insulating layer 2, and a metal shielding layer 3, and is characterized in that: the metal pole piece 1 is provided with a hole, the outer side of the metal pole piece 1 is connected with the insulating layer 2, and the outer side of the insulating layer 2 is arranged Metal shielding layer 3;
[0013] The metal pole piece 1 is circular or square or triangular or other polygonal, and the holes on the metal pole piece 1 can be circular or square or triangular or other polygonal;
[0014] The number of holes on the metal pole piece 1 is more than one;
[0015] The number of perforated pole pieces of the metal pole piece 1 is 1 piece or more than 2 pieces.
[0016] When the metal pole piece 1 with holes has more than 2 layers, the centers of the holes of two adjacent layers can be completely opposite, and ...
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The present invention provides an ion receiving device, comprising a metal pole piece (1), an insulating layer (2) and a metal shielding layer (3), characterized in that: the metal pole piece (1) is provided with a hole, and air flows from the hole Through, the outer side of the metal pole piece (1) is connected with the insulating layer (2), and the outer side of the insulating layer (2) is provided with a metal shielding layer (3). The hole, the airflow flows through the hole, and the ions can be received in the airflow field, which overcomes the current phenomenon that a metal sheet is used to receive ions, and the airflow flows through the side wall of the metal sheet, resulting in unstable airflow. One pole piece is divided into several The small pole piece makes the air flow relatively stable after the airflow flows through the receiving pole piece, and has the characteristics of simple structure, stable airflow and high ion receiving efficiency.
Description
technical field [0001] The invention relates to an ion device, in particular to an ion receiving device. Background technique [0002] In traditional ion mobility spectrometry or other similar mobility spectrometry, a metal plate is usually used as a receiving plate, and the airflow flows through the side of the pole piece. Due to the large area of the metal disc, the airflow is unstable. This phenomenon is manifested as , a trumpet-shaped low-pressure area appears in front of the receiving pole, and the airflow velocity at each point at different positions is not stable. Contents of the invention [0003] The purpose of the present invention is to solve the defects and deficiencies of the current domestic existing technologies and design principles in this field. The present invention provides an ion receiving device. Since a plurality of small holes are opened on the receiving electrode plate, the airflow flows through , which is equivalent to dividing one pole piece ...
Claims
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IPC IPC(8): H01J49/02
Inventor 赵占锋周志权张晶晶姜杰
Owner HARBIN INST OF TECH AT WEIHAI