CN216747543U - Photoionization ionization chamber device - Google Patents
Photoionization ionization chamber device Download PDFInfo
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- CN216747543U CN216747543U CN202220157109.6U CN202220157109U CN216747543U CN 216747543 U CN216747543 U CN 216747543U CN 202220157109 U CN202220157109 U CN 202220157109U CN 216747543 U CN216747543 U CN 216747543U
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- ionization chamber
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- photoionization
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Abstract
The utility model relates to the technical field of gas detection, and discloses a photoionization ionization chamber device, which comprises an ionization chamber device, a first ionization chamber and a second ionization chamber; the ionization chamber device comprises a shell, a first accommodating cavity, a circuit board, a cover body, a collecting chamber and a PCB (printed circuit board), wherein the first accommodating cavity and a second accommodating cavity are formed in the shell, an ultraviolet lamp is installed in the first accommodating cavity, the circuit board matched with the ultraviolet lamp is arranged in the second accommodating cavity, and the cover body is arranged at the top of the shell; this photoionization ionization chamber device, through the electrode simplification with the device, and ion collector and electric field bias electrode position interchangeable, reference electrode fixes on the PCB board with the mode of ring, simplifies the research and development design of product, and the voltage that adds at electric field bias electrode can be the positive voltage, also can be the negative voltage, thereby can change the little current direction of ion collector, makes circuit design simple, and simple structure, the compactness, the material resources of using manpower sparingly reduce product cost.
Description
Technical Field
The utility model relates to the technical field of gas detection, in particular to a photoionization ionization chamber device.
Background
The detection mode of the photoionization sensor in the current commercial application is as follows: when gas enters an ionization chamber of the photoionization sensor, the gas molecules with ionization energy less than or equal to ultraviolet energy are ionized to generate positively charged ions and electrons only after absorbing one photon. In the ionization chamber, ions and electrons are accelerated by an external electric field and rapidly move towards the metal electrode, so that a micro-current signal related to the concentration of an object to be detected is formed, the corresponding concentration of the gas to be detected can be calculated by detecting the magnitude of the current, the gas leaves the ionization chamber after detection and is reduced into the original gas, and the gas is not damaged.
The existing photoionization sensor device has a complex structure, multiple working procedures in the production process and excessive material use, and can not be maintained frequently after being damaged in use, and needs to be replaced again, so that serious resource waste is caused, and the investment of the cost of an enterprise is increased.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Aiming at the defects of the prior art, the utility model provides a photoionization ionization chamber device which has the advantage of simplifying the structure and solves the problems of high production cost, high investment and low benefit.
(II) technical scheme
In order to achieve the purpose, the utility model provides the following technical scheme: a photoionization ionization chamber device, comprising an ionization chamber device;
the ionization chamber device comprises a shell, a first accommodating chamber, a circuit board, a cover body, a collecting chamber and a PCB, wherein the first accommodating chamber and a second accommodating chamber are formed in the shell, an ultraviolet lamp is arranged inside the first accommodating chamber, the circuit board matched with the ultraviolet lamp is arranged inside the second accommodating chamber, the cover body is arranged at the top of the shell, the collecting chamber is formed in the cover body, the PCB and an electrode are arranged inside the collecting chamber, and a plug is arranged at the bottom of the shell.
Preferably, the electrodes comprise an ion collecting electrode, a reference electrode, an electric field bias electrode and a wafer, the ion collecting electrode, the reference electrode and the electric field bias electrode are assembled and fixed on the PCB through the wafer, and the ion collecting electrode, the reference electrode and the electric field bias electrode are connected through metal wires.
By adopting the scheme, the electrodes comprise the ion collecting electrode, the reference electrode, the electric field bias electrode and the wafer, the ion collecting electrode, the reference electrode and the electric field bias electrode are assembled and fixed on the PCB through the wafer, the electrode is simple and compact in design, the cost can be reduced, the anti-interference function is enhanced, and the ion collecting electrode, the reference electrode and the electric field bias electrode are connected through the metal wire.
Preferably, a convex block is arranged at the top of the shell, and a groove matched with the convex block is formed at the bottom of the cover body.
By adopting the scheme, the convex block is arranged at the top of the shell, the groove matched with the convex block is formed in the bottom of the cover body, and the sealing performance between the shell and the cover body is improved.
Preferably, a clamping block is arranged inside the groove, and a protruding structure matched with the clamping block is arranged on the outer side wall of the protruding block.
By adopting the scheme, the clamping block is arranged in the groove, the protruding structure matched with the clamping block is arranged on the outer side wall of the protruding block, and the shell and the cover body can be fixed and can be detached conveniently.
Preferably, the outer side wall of the projection is in threaded connection with the inner side wall of the groove.
Through adopting above-mentioned scheme, the stability between casing and the lid is further strengthened to the lateral wall of lug and the inside wall threaded connection of recess.
Preferably, a protective pad is arranged on the top of the shell.
Through adopting above-mentioned scheme, the top of casing is provided with the protection and fills up, strengthens the leakproofness.
(III) advantageous effects
Compared with the prior art, the utility model provides a photoionization ionization chamber device, which has the following beneficial effects:
this photoionization ionization chamber device, through the electrode simplification with the device, and ion collector and electric field bias electrode position interchangeable, reference electrode fixes on the PCB board with the mode of ring, simplifies the research and development design of product, and the voltage that adds at electric field bias electrode can be the positive voltage, also can be the negative voltage, thereby can change the little current direction of ion collector, makes circuit design simple, and simple structure, and is compact, uses manpower sparingly material resources, reduces product cost.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of an electrode according to the present invention;
FIG. 3 is a schematic diagram of the working principle of the present invention;
FIG. 4 is a schematic diagram of the bias electrode of the present invention at a positive voltage;
FIG. 5 is a schematic diagram of the bias electrode of the present invention being a negative voltage.
In the figure: 1. an ion collecting electrode; 2. a reference electrode; 3. an electric field biasing electrode; 4. an ultraviolet lamp; 5. a wafer; 6. an ionization chamber arrangement; 61. a housing; 611. a bump; 612. a protective pad; 62. a first accommodating cavity; 621. a second accommodating cavity; 63. a circuit board; 64. a cover body; 641. a groove; 642. a clamping block; 65. a collection chamber; 66. a PCB board; 67. and (4) a plug.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Examples
A photoionization ionization chamber device comprising an ionization chamber device 6;
The electrode includes ion collecting electrode 1, reference electrode 2, electric field bias electrode 3 and disk 5, ion collecting electrode 1 reference electrode 2 with pass through between the electric field bias electrode 3 disk 5 equipment is fixed in on the PCB board 66, ion collecting electrode 1 reference electrode 2 with connect through the wire between the electric field bias electrode 3.
The top of the housing 61 is provided with a protrusion 611, the bottom of the cover 64 is provided with a groove 641 matching the protrusion 611, the inside of the groove 641 is provided with a detent 642, the outer side wall of the protrusion 611 is provided with a protruding structure matching the detent 642, the outer side wall of the protrusion 611 is in threaded connection with the inner side wall of the groove 641, and the top of the housing 61 is provided with a protection pad 612.
Referring to fig. 1-5, when the ionization chamber device 6 works, gas enters the ionization chamber, the gas is ionized under the irradiation of the ultraviolet lamp 4, ionized ions and electrons are accelerated in an external electric field and rapidly move towards the metal electrode, so that a micro-current signal related to the concentration of the gas to be measured is formed, because a positive voltage is applied to the electric field bias electrode 3 at the moment, positive ions are received by the ion collection electrode 1, the generated micro-current flows out, the current gas concentration can be known through processing and calculation on the size of the flowing out current, the electrodes comprise the ion collection electrode 1, the reference electrode 2, the electric field bias electrode 3 and the wafer 5, the ion collection electrode 1, the reference electrode 2 and the electric field bias electrode 3 are assembled and fixed on the PCB 66 through the wafer 5, the electrode design is simple and compact, the cost can be reduced, and the anti-interference function can be enhanced, the ion collecting electrode 1, the reference electrode 2 and the electric field bias electrode 3 are connected through metal wires, the ion collecting electrode 1 and the electric field bias electrode 3 can be switched in position, analysis of original gas concentration cannot be affected, a convex block 611 is arranged at the top of the shell 61, a groove 641 matched with the convex block 611 is formed in the bottom of the cover 64, sealing performance between the shell 61 and the cover 64 is improved, a clamping block 642 is arranged inside the groove 641, a protruding structure matched with the clamping block 642 is arranged on the outer side wall of the convex block 611, the shell 61 and the cover 64 can be fixed and conveniently detached, the outer side wall of the convex block 611 is in threaded connection with the inner side wall of the groove 641, stability between the shell 61 and the cover 64 is further enhanced, a protective pad 612 is arranged at the top of the shell 61, and sealing performance is enhanced.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A photoionization ionization chamber device, comprising: comprises an ionization chamber device (6);
ionization chamber device (6) include casing (61), hold chamber one (62), circuit board (63), lid (64), collect room (65) and PCB board (66), seted up in the inside of casing (61) hold chamber one (62) and hold chamber two (621), the internally mounted that holds chamber one (62) has ultraviolet lamp (4), the inside that holds chamber two (621) is provided with the cooperation circuit board (63) of ultraviolet lamp (4), the top of casing (61) is provided with lid (64), seted up in the inside of lid (64) collect room (65), the internally mounted that collects room (65) has PCB board (66) and electrode, the bottom of casing (61) is provided with plug (67).
2. A photoionization ionization chamber device according to claim 1, wherein: the electrode includes ion collecting electrode (1), reference electrode (2), electric field bias electrode (3) and disk (5), ion collecting electrode (1) reference electrode (2) with pass through between electric field bias electrode (3) disk (5) equipment is fixed in on PCB board (66), ion collecting electrode (1) reference electrode (2) with connect through the wire between electric field bias electrode (3).
3. A photoionization ionization chamber device according to claim 2, wherein: the top of the shell (61) is provided with a convex block (611), and the bottom of the cover body (64) is provided with a groove (641) matched with the convex block (611).
4. A photoionization ionization chamber device according to claim 3, wherein: a clamping block (642) is arranged inside the groove (641), and a protruding structure matched with the clamping block (642) is arranged on the outer side wall of the convex block (611).
5. A photoionization ionization chamber device according to claim 4, wherein: the outer side wall of the convex block (611) is in threaded connection with the inner side wall of the groove (641).
6. A photoionization ionization chamber device according to claim 5, wherein: the top of the shell (61) is provided with a protective pad (612).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220157109.6U CN216747543U (en) | 2022-01-20 | 2022-01-20 | Photoionization ionization chamber device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220157109.6U CN216747543U (en) | 2022-01-20 | 2022-01-20 | Photoionization ionization chamber device |
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| Publication Number | Publication Date |
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| CN216747543U true CN216747543U (en) | 2022-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220157109.6U Active CN216747543U (en) | 2022-01-20 | 2022-01-20 | Photoionization ionization chamber device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115561302A (en) * | 2022-11-24 | 2023-01-03 | 河北讯辉科技股份有限公司 | Intelligent gas detection system |
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2022
- 2022-01-20 CN CN202220157109.6U patent/CN216747543U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115561302A (en) * | 2022-11-24 | 2023-01-03 | 河北讯辉科技股份有限公司 | Intelligent gas detection system |
| CN115561302B (en) * | 2022-11-24 | 2023-03-03 | 河北讯辉科技股份有限公司 | Intelligent gas detection system |
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