CN103928287A - Ion source and air pump integration device and application thereof - Google Patents
Ion source and air pump integration device and application thereof Download PDFInfo
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- CN103928287A CN103928287A CN201410152820.2A CN201410152820A CN103928287A CN 103928287 A CN103928287 A CN 103928287A CN 201410152820 A CN201410152820 A CN 201410152820A CN 103928287 A CN103928287 A CN 103928287A
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Abstract
The invention provides an ion source and air pump integration device. The ion source and air pump integration device comprises a frame assembly, a cathode assembly and an anode assembly. The frame assembly comprises a face plate, wherein a cavity structure is formed by wrapping the face plate, and the face plate is provided with air outlet holes. The cathode assembly and the anode assembly are arranged in the frame assembly, and the cathode assembly and the anode assembly are opposite. According to the ion source and air pump integration device, the cathode assembly and the anode assembly are utilized to achieve the functions of ionized matter through corona discharge or glow discharge under a high voltage; meanwhile, ion wind is generated in the discharge process, flows out of the air outlet holes and carries ions generated through ionization to enter a follow-up separation or detection device. The ion source and air pump integration device is simple in structure, achieves and integrates the functions of an ion source and the functions of an air pump, and can be applied to analytical instruments such as mass spectrographs, ionic migration spectrometers and high-field asymmetric ionic migration spectrometers.
Description
Technical field
The present invention relates to field of analytic instrument, particularly relate to the gentle pump integrated device of ion source and application thereof.
Background technology
The analytical instrument such as mass spectrometer, ion mobility spectrometry, High-Field asymmetric waveform ion mobility spectrometry are to detect the important scientific method of analyzing all kinds of chemical substances.
Along with micro electro mechanical system (MEMS) technology (MEMS, Micro Electro-Mechanical Systems) in the application in chemical analysis instrument field, the analytical instrument such as mass spectrometer, ion mobility spectrometry, High-Field asymmetric waveform ion mobility spectrometry are just towards microminiaturized, integrated, low-power consumption, portable future development, and ionogenic microminiaturization is key wherein.
Traditional mass spectrometer, ion mobility spectrometry, High-Field asymmetric waveform ion mobility spectrometry comprise ion source and air pump.Ion source produces the function that stable corona discharge is realized ionization material; Air pump is introduced high velocity air from outside, on the one hand ionogenic region of discharge is dispelled the heat, and suppresses the generation of electric arc, carries on the other hand detection material and enters ionized space.
In recent years, microminiaturized research for analytical instrument such as mass spectrometer, ion mobility spectrometry, High-Field asymmetric waveform ion mobility spectrometries focuses mostly in ionogenic improvement, ionogenic structure is improved, but still need the air pump of bulky complex to coordinate with it, be unfavorable for the microminiaturization of such analytical instrument.
Summary of the invention
Based on this, be necessary to comprise that for analytical instrument ion source and air pump cause bulky problem, provide a kind of ion source gentle pump integrated device.
The gentle pump integrated device of ion source, comprising:
Frame set, described frame set comprises panel, and described panel is wrapped to form cavity structure, and described panel is provided with exhaust vent;
Cathode sets, described cathode sets is arranged in described frame set;
Anode group, described anode group is arranged in described frame set, and described anode group and described cathode sets are oppositely arranged.
Therein in an embodiment, the gentle pump integrated device of described ion source also comprises connection group, described connection group comprises fixture and connection handle, described panel offers the side through hole coordinating with described connection handle, described connection handle one end is connected with described fixture through described side through hole, and described cathode sets is connected in described fixture.
Therein in an embodiment, described frame set is quadra group, and described panel comprises side plate, top board and base plate, and described exhaust vent and described side through hole are all arranged at described side plate, the top board of described frame set offers through hole, and described anode group through hole from described stretches in described frame set.
In an embodiment, described fixture is slidably connected in described frame set therein.
In an embodiment, described cathode sets is metal needle therein, and described anode group is metal column.
In an embodiment, described frame set middle part is provided with dividing plate therein, and described top board and described dividing plate all offer groove, and described fixture coordinates with described groove, and the junction of described connection handle and described fixture and described dividing plate offset.
In an embodiment, described top board offers the upper through hole that does not wait in a plurality of apertures therein, and described dividing plate is provided with corresponding blind hole, and described metal column through hole from one of them stretches in corresponding blind hole.
Therein in an embodiment, described fixture comprises long arm end and galianconism end, described galianconism end is vertically connected at described long arm end, described connection handle is connected in described long arm end, described galianconism end offers supported hole and compressing hole, the afterbody of described metal needle stretches in described supported hole, described in being pressed in, supports hole wall by the bolt coordinating with described compressing hole.
Therein in an embodiment,, the diameter of the needle point of described metal needle is xx～xx micron, the diameter of described metal cylinder is 2～4 millimeters.
The present invention also provides the application of the gentle pump integrated device of above-mentioned ion source in mass spectrometer, ion mobility spectrometry, High-Field asymmetric waveform ion mobility spectrometry.
The gentle pump integrated device of above-mentioned ion source, utilize anode group and cathode sets under high pressure by corona discharge or glow discharge, to realize the function of ionization material, simultaneously in discharge process, produced ion wind, ion wind flows out from exhaust vent, ionogenic region of discharge is dispelled the heat, and the ion that carries ionization generation enters follow-up separation or checkout gear.The gentle pump integrated device of above-mentioned ion source is simple in structure, has realized simultaneously and integrated the function of ion source and air pump.
Accompanying drawing explanation
Fig. 1 is the structural representation of the frame set of the gentle pump integrated device of an execution mode ion source;
Fig. 2 is the structural representation of the gentle pump integrated device of an execution mode ion source;
Fig. 3 is the test circuit schematic diagram of the gentle pump integrated device of ion source.
Embodiment
The gentle pump integrated device 100 of a kind of ion source, as depicted in figs. 1 and 2, comprising:
Frame set 200, frame set 200 comprises panel 220, and panel 220 is wrapped to form cavity structure, and panel 220 is provided with exhaust vent 222.
Cathode sets 300, cathode sets 300 is arranged in frame set 200.
Anode group 400, anode group 400 is arranged in frame set 200, and anode group 400 and cathode sets 300 are oppositely arranged.
Frame set 200 is set to cavity structure, in order to hold cathode sets 300 and anode group 400, and is provided with exhaust vent 222, form one for the cavity of airflow, make the ion wind of formation, along cavity, collect circulation, make the wind speed of ion wind larger, and can control the mobile direction of ion wind.Be understandable that, the shape of frame set 200 does not affect it and plays a role, so can not the limiting of frame set 200 shapes.Frame set 200 can be sphere structure, spheroid structure, cylindrical structure or other rule and irregular cube structure.
Cathode sets 300 can be metal needle, metal column, metal wire etc.Cathode sets 300 can be directly connected in frame set 200 one end, also can be connected in frame set 200 by connector.The connected mode of cathode sets 300 can be the common connected modes such as welding, gluing, bolt connection.
Same, anode group 400 can be metal column, metal wire, metallic plate etc., is arranged in frame set 200, can be directly connected in frame set 200 one end, also can be connected in frame set 200 by connector.The connected mode of anode group 400 can be the common connected modes such as welding, gluing, bolt connection.
Cathode sets 300 can be connected with power supply by exhaust vent 222 lead-in conductors with anode group 400.
Therein in an embodiment, as shown in Figure 2, the gentle pump integrated device 100 of ion source also comprises connection group 500, connection group 500 comprises fixture 520 and connection handle 540, panel 220 offers the side through hole 224 coordinating with connection handle 540, connection handle 540 one end are connected with fixture 520 through side through hole 224, and cathode sets 300 is connected in fixture 520.
Wire can be connected with cathode sets 300 via fixture 520 by connection handle 540, cathode sets 300 can be connected in the outside of frame set 200 with wire, element in frame set 200 is more simplified, and gentle pump integrated device 100 structures of ion source are more compact, and versatility is stronger.Connection handle 540 and side through hole 224 coordinate, and can reduce ion wind and overflow from gap.
Therein in an embodiment, as shown in Figure 2, frame set 200 is quadra group 200, panel 220 comprises side plate 226, top board 228 and base plate 229, exhaust vent 222 and side through hole 224 are all arranged at side plate 226, the top board 228 of frame set 200 offers through hole 230, and anode group 400 stretches in frame set 200 from upper through hole 230.
Top board 228 is provided with through hole 230, anode group 400 can stretch in frame set 200 from upper through hole 230, and anode group 400 can be connected in the outside of frame set 200 with wire, and the element in frame set 200 is more simplified, gentle pump integrated device 100 structures of ion source are more compact, and versatility is stronger.And anode group 400 can easily be extracted out from frame set 200, is convenient for changing maintenance.
Exhaust vent 222 and side through hole 224 can be arranged at same side plate 226, also can be arranged at different side plate 226, do not affect use.Be understandable that, exhaust vent 222 is arranged at respectively two relative side plates 226 with side through hole 224, and connection handle 540 is away from exhaust vent 222, and when connection handle 540 is operated, the ion wind that can not go out exhaust vent 222 forms and hinders.
Preferably, upper through hole 230 and anode group 400 match, and are understandable that, between upper through hole 230 and anode group 400, gap is less, can reduce ion wind and overflow from gap.
In an embodiment, fixture 520 is slidably connected in frame set 200 therein.Fixture 520 is slidably connected in frame set 200, and the distance between adjustable anode group 400 and cathode sets 300, to regulate as required strength of discharge and ion wind size.
The mode that is slidably connected of fixture 520 and frame set 200 is a lot, for example, can be at the interior slide rail that arranges of frame set 200, fixture 520 is arranged on corresponding slide block.
In an embodiment, cathode sets 300 is metal needle therein, and anode group 400 is metal column.The tip of metal needle is thinner, can make the asymmetry of cathode sets 300 and anode group 400 larger, enhanced discharge electric current.
In an embodiment, as shown in Figure 2, frame set 200 middle parts are provided with dividing plate 600 therein, and top board 228 and dividing plate 600 all offer groove 620, and fixture 520 coordinates with groove 620, and connection handle 540 offsets with junction and the dividing plate 600 of fixture 520.By connecing handle 540, regulate the position of fixture 520, groove 620 and fixture 520 coordinate, and can make the slip of fixture 520 more smooth, and the distance of glide direction and slip are controlled, make to regulate the size of discharging current and ion wind more convenient and accurate.
In an embodiment, as shown in Figure 2, top board 228 offers the upper through hole 230 that does not wait in a plurality of apertures therein, and dividing plate 600 is provided with corresponding blind hole 640, and metal column through hole 230 from one of them stretches in corresponding blind hole 640.
Dividing plate 600 is provided with corresponding blind hole 640, and blind hole 640 does not connect on dividing plate 600.The aperture of blind hole 640 is more than or equal to the aperture of corresponding upper through hole 230, is understandable that, when the aperture of the two equates, better to the fixed effect of metal column.
Metal column one end is stretched into from upper through hole 230, supports in blind hole 640 and fixes, and metal column has upper through hole 230 and 640 two strong points of blind hole, comparatively stable, is not easy to be subjected to displacement.Metal column offsets by blind hole 640 and dividing plate 600 through upper through hole 230.Be provided with a plurality of upper through holes 230, be convenient to select as required the metal column of different-diameter size.More excellent, can be provided with the stopper coordinating with upper through hole 230, in use, untapped upper through hole 230 is blocked, avoid ion wind to overflow.
Certainly, dividing plate 600 also can not arrange blind hole 640, and metal column one end is stretched into from upper through hole 230, directly and dividing plate 600 offset, equally can fixing metal post, avoid metal column landing downwards.
Therein in an embodiment, as shown in Figure 2, fixture 520 comprises long arm end 522 and galianconism end 524, galianconism end 524 is vertically connected at long arm end 522, connection handle 540 is connected in long arm end 522, galianconism end 524 offers supported hole and compressing hole, and the afterbody of metal needle stretches in supported hole, described in being pressed in, supports hole wall by the bolt coordinating with described compressing hole.By this kind of mode, connect, the relative altitude of adjustable metal needle needle point, and good fixing effect, metal needle is not easy to be subjected to displacement.
Therein in an embodiment, as shown in Figure 2, metal needle parallel with metal column over against, the distance between metal needle and metal column is 2～4 millimeters, the diameter of the needle point of described metal needle is 10～1000 microns, the diameter of described metal column is 2～4 millimeters.Under this kind of design, the asymmetry of metal needle and metal column is larger, and near electric field strength metal needle is large, and the average discharge current that corona discharge or glow discharge produce is larger.
Data test
Test case 1
The gentle pump integrated device of ion source, metal needle is stainless pin, and the diameter of needle point is 626 microns, and metal column is copper post, and the diameter of copper post is 4 millimeters.Stainless pin parallel with copper post over against, the distance between draw point and copper post is 2 millimeters.
Adopt the test circuit shown in Fig. 3 to test, steady resistance R
1after series connection stainless pin, connect positive source, discharge resistance R
2in parallel with power supply, test resistance R
3be connected with power cathode with the series connection of copper post is rear, oscilloscope is in parallel with test resistance R3, test resistance R
3resistance be 1K Ω, steady resistance R
1resistance be 10M Ω, discharge resistance R
2resistance be 10M Ω, supply voltage is-3800V.Adopt Faraday cup to carry out charge-trapping and carry out current measurement by Keithley6487 type Pi Anbiao at the gentle pump integrated device exhaust vent of ion source place, testo 405-V1 anemobiagraph carries out measuring wind speed in experimental provision outlet, recording electric current is 240pA, and the wind speed of ion wind is 1.15 m/s.
Test case 2
The gentle pump integrated device of ion source, metal needle is stainless pin, and the diameter of needle point is 148 microns, and metal column is copper post, and the diameter of copper post is 3 millimeters.Pin parallel with copper post over against, the distance between draw point and copper post is 8 millimeters.
Adopt the test circuit shown in Fig. 3 to test, steady resistance R
1after series connection stainless pin, connect positive source, discharge resistance R
2in parallel with power supply, test resistance R
3be connected with power cathode with the series connection of copper post is rear, oscilloscope is in parallel with test resistance R3, test resistance R
3resistance be 1K Ω, steady resistance R
1resistance be 16M Ω, discharge resistance R
2resistance be 16M Ω, supply voltage is-10000V.Adopt Faraday cup to carry out charge-trapping and carry out current measurement by Keithley6487 type Pi Anbiao at the gentle pump integrated device exhaust vent of ion source place, testo 405-V1 anemobiagraph carries out measuring wind speed in experimental provision outlet, recording electric current is 280pA, and the wind speed of ion wind is 1.6 m/s.
The gentle pump integrated device of the provable ion source of the present invention of above-mentioned test experiments is in corona discharge process, produced ion wind simultaneously, realize simultaneously and integrated the function of ion source and air pump, can be applicable in mass spectrometer, ion mobility spectrometry, High-Field asymmetric waveform ion mobility spectrometry.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. the gentle pump integrated device of ion source, is characterized in that, comprising:
Frame set, described frame set comprises panel, and described panel is wrapped to form cavity structure, and described panel is provided with exhaust vent;
Cathode sets, described cathode sets is arranged in described frame set;
Anode group, described anode group is arranged in described frame set, and described anode group and described cathode sets are oppositely arranged.
2. the gentle pump integrated device of ion source according to claim 1, it is characterized in that, the gentle pump integrated device of described ion source also comprises connection group, described connection group comprises fixture and connection handle, described panel offers the side through hole coordinating with described connection handle, described connection handle one end is connected with described fixture through described side through hole, and described cathode sets is connected in described fixture.
3. the gentle pump integrated device of ion source according to claim 2, it is characterized in that, described frame set is quadra group, described panel comprises side plate, top board and base plate, described exhaust vent and described side through hole are all arranged at described side plate, the top board of described frame set offers through hole, and described anode group through hole from described stretches in described frame set.
4. the gentle pump integrated device of ion source according to claim 2, is characterized in that, described fixture is slidably connected in described frame set.
5. the gentle pump integrated device of ion source according to claim 2, is characterized in that, described cathode sets is metal needle, and described anode group is metal column.
6. the gentle pump integrated device of ion source according to claim 5, it is characterized in that, described frame set middle part is provided with dividing plate, and described top board and described dividing plate all offer groove, described fixture coordinates with described groove, and the junction of described connection handle and described fixture and described dividing plate offset.
7. the gentle pump integrated device of ion source according to claim 6, is characterized in that, described top board offers the upper through hole that does not wait in a plurality of apertures, and described dividing plate is provided with corresponding blind hole, and described metal column through hole from one of them stretches in corresponding blind hole.
8. the gentle pump integrated device of ion source according to claim 5, it is characterized in that, described fixture comprises long arm end and galianconism end, described galianconism end is vertically connected at described long arm end, described connection handle is connected in described long arm end, described galianconism end offers supported hole and compressing hole, and the afterbody of described metal needle stretches in described supported hole, described in being pressed in, supports hole wall by the bolt coordinating with described compressing hole.
9. the gentle pump integrated device of ion source according to claim 5, it is characterized in that, described metal needle parallel with described metal column over against, distance between described metal needle and described metal column is 2～4 millimeters, the diameter of the needle point of described metal needle is 10～1000 microns, and the diameter of described metal column is 2～4 millimeters.
10. the application of the gentle pump integrated device of ion source described in claim 1～9 any one in mass spectrometer, ion mobility spectrometry, High-Field asymmetric waveform ion mobility spectrometry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410152820.2A CN103928287A (en) | 2014-04-17 | 2014-04-17 | Ion source and air pump integration device and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410152820.2A CN103928287A (en) | 2014-04-17 | 2014-04-17 | Ion source and air pump integration device and application thereof |
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| CN103928287A true CN103928287A (en) | 2014-07-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111540666A (en) * | 2020-04-20 | 2020-08-14 | 清华大学深圳国际研究生院 | Ion wind generating device and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3127441A1 (en) * | 1981-07-11 | 1983-01-27 | Leybold-Heraeus GmbH, 5000 Köln | Ion source |
| CN2053796U (en) * | 1989-10-06 | 1990-02-28 | 西安工业学院 | Wide-beam cold-cathode ionization source |
| CN1529898A (en) * | 2000-11-24 | 2004-09-15 | 英国国防部 | Radio frequency ion source |
| US8071957B1 (en) * | 2009-03-10 | 2011-12-06 | Science Applications International Corporation | Soft chemical ionization source |
-
2014
- 2014-04-17 CN CN201410152820.2A patent/CN103928287A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3127441A1 (en) * | 1981-07-11 | 1983-01-27 | Leybold-Heraeus GmbH, 5000 Köln | Ion source |
| CN2053796U (en) * | 1989-10-06 | 1990-02-28 | 西安工业学院 | Wide-beam cold-cathode ionization source |
| CN1529898A (en) * | 2000-11-24 | 2004-09-15 | 英国国防部 | Radio frequency ion source |
| US8071957B1 (en) * | 2009-03-10 | 2011-12-06 | Science Applications International Corporation | Soft chemical ionization source |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111540666A (en) * | 2020-04-20 | 2020-08-14 | 清华大学深圳国际研究生院 | Ion wind generating device and application thereof |
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