Check patentability & draft patents in minutes with Patsnap Eureka AI!

Photoionization detection device with intelligent on/off function and detection method thereof

A photoionization detection and functional technology, applied in measurement devices, material analysis by electromagnetic means, instruments, etc., can solve problems such as the decrease of the output light intensity of ultraviolet lamps, improve long-term work stability, reduce instrument maintenance frequency, The effect of slowing down deposition

Pending Publication Date: 2019-12-20
盟莆安电子(上海)有限公司 +1
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the VOC molecules entering the ionization chamber are ionized into ions, some of them will be adsorbed on the window of the UV lamp. At the same time, a small amount of dust particles may also be deposited on the window of the UV lamp. As the running time increases, the surface of the window of the UV lamp The deposits also continue to increase, which will lead to a sharp drop in the output light intensity of the UV lamp, which requires users to clean and maintain the ionization chamber and the window of the UV lamp frequently

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Photoionization detection device with intelligent on/off function and detection method thereof
  • Photoionization detection device with intelligent on/off function and detection method thereof
  • Photoionization detection device with intelligent on/off function and detection method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] as attached figure 1 As shown, a photoionization detection device with intelligent start-stop function includes an ionization chamber 1 and an ultraviolet lamp 2, the emitting end of the ultraviolet lamp 2 is inserted into the ionization chamber 1, and the ionization chamber 1 is provided with an air inlet 3 , air outlet 4, described air inlet 3, air outlet 4 are connected with inlet pipe 5, outlet pipe 6 respectively, also comprise air flow control device, time controller 9, time controller can adopt the time control that model is XHST-10 device;

[0030] The air flow control device is used to control the circulation of the gas to be detected, wherein the air flow control device is an air pump 8 communicated with the gas outlet pipe 6 .

[0031] The time controller 9 is electrically connected with the air pump 8, and the time controller 9 is used for periodically controlling the opening or closing of the air pump 8.

[0032] Wherein, the ionization chamber 1 comprise...

Embodiment 2

[0038] as attached figure 2 As shown, the difference between this embodiment and Embodiment 1 is that the airflow control device is a solenoid valve 7 arranged on the intake pipe 5, the time controller 9 is electrically connected with the solenoid valve 7, and the solenoid valve is set through the time controller 9. 7, so as to periodically control the opening and closing of the solenoid valve 7, reduce the amount of VOC entering the ionization chamber 1, and slow down the deposition of VOC ions on the window surface of the ultraviolet lamp 2.

Embodiment 3

[0040] as attached image 3 As shown, the difference between this embodiment and Embodiment 1 is that the time controller 9 is electrically connected to the ultraviolet lamp 2, and the time controller 9 is used to set the on-time and off-time of the ultraviolet lamp 2, thereby periodically controlling the ultraviolet lamp 2 is turned on and off to reduce the ionization of VOC by the ultraviolet lamp 2, so as to slow down the deposition of VOC ions on the window surface of the ultraviolet lamp 2.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a photoionization detection device with an intelligent on / off function. The device comprises an ionization chamber and an ultraviolet lamp, wherein the emitting end of the ultraviolet lamp is inserted into the ionization chamber, the ionization chamber is provided with an air inlet and an air outlet, and the air inlet and the air outlet are connected with an air inlet pipeand an air outlet pipe respectively; the device is characterized by further comprising an airflow control device and a time controller; the airflow control device is used for controlling circulation of a to-be-detected gas; and the time controller is electrically connected with the ultraviolet lamp or / and the airflow control device and is used for periodically controlling on / off of the ultravioletlamp or / and the airflow control device. Through the device, deposition of VOC ions on the surface of a window of the ultraviolet lamp can be relieved, therefore, the long-term working stability of the photoionization detector is improved, and instrument maintenance frequency is effectively lowered.

Description

technical field [0001] The invention relates to the technical field of photoionization detection, in particular to a photoionization detection device with an intelligent start-stop function and a detection method thereof. Background technique [0002] Photoionization sensor technology is widely used in the detection of volatile organic gases (VOC). The photoionization sensor ionizes organic molecules in the ionization chamber through the high-energy photons emitted by the vacuum ultraviolet lamp, and the ionized ions are captured by the collecting electrode. Finally, it is converted into an electrical signal, which is directly related to the VOC concentration, and after a series of processing, it is converted into the VOC concentration that people care about. After the VOC molecules entering the ionization chamber are ionized into ions, some of them will be adsorbed on the window of the UV lamp. At the same time, a small amount of dust particles may also be deposited on the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N27/66
CPCG01N27/66
Inventor 任欢欢崔国治齐宝玲
Owner 盟莆安电子(上海)有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com