CN216147263U - MEMS silicon-based membrane hole atomizing core - Google Patents
MEMS silicon-based membrane hole atomizing core Download PDFInfo
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- CN216147263U CN216147263U CN202122113888.8U CN202122113888U CN216147263U CN 216147263 U CN216147263 U CN 216147263U CN 202122113888 U CN202122113888 U CN 202122113888U CN 216147263 U CN216147263 U CN 216147263U
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Abstract
The utility model discloses an MEMS silicon-based film hole atomizing core, which belongs to the technical field of liquid heating atomizing cores and comprises a silicon substrate sheet, at least one layer of film hole mechanism and a metal electrode, wherein at least one layer of film hole mechanism is fixedly connected to the top surface of the silicon substrate sheet, the metal electrode is fixedly connected to the top of the film hole mechanism, at least one liquid guide hole is formed in the silicon substrate sheet, and the liquid guide hole is communicated with the bottom of the silicon substrate sheet and the top of the film hole mechanism; the multi-layer film hole mechanism is adopted, so that the decomposition of the whole thickness is facilitated, the opening thickness of the primary atomization hole or the secondary atomization hole is reduced, the opening difficulty of the atomization hole is reduced, the opening of the small-aperture non-straight-through hole of the atomization hole is realized, and the liquid locking and storing functions are good; the manufacturing process of the holes of the atomization holes is controllable, the consistency is high, the uniformity is good, and the problems of local overheating and dry burning carbonization are solved.
Description
Technical Field
The utility model belongs to the technical field of liquid heating atomization cores, and particularly relates to an MEMS silicon-based film hole atomization core.
Background
The heat-generating atomization element is a core component of the liquid vaporization device, heats liquid, turns the liquid into mist aerosol and is inhaled by a smoker of the electronic cigarette. In order to ensure that the smoker has a good taste, the atomizing element is required to heat the atomized liquid quickly, uniformly, consistently and finely, and the generation of harmful substances is reduced as much as possible. The heating atomization core of the existing liquid atomization device mainly has two types, namely a first ceramic atomization core, the technical scheme is mature, and is the scheme adopted by the current mainstream product, the heating atomization core is composed of two parts, namely ceramic and a heating electrode, the ceramic is sintered at high temperature to form a bowl-shaped structure, a heating film is designed to be in a specific shape and is attached to the surface of the ceramic, and in the working process, the heating film heats liquid to form mist through uniform heating and the mist is emitted through ceramic honeycomb holes; the second is a silicon-based atomizing core, which is currently in the research, development and popularization stage, compared with a ceramic core, the processing consistency and structural diversity can be realized, the material is relatively environment-friendly, the development direction of the future technology is provided, a micro-nano processing technology is generally used, a metal material is deposited on a silicon substrate, a metal resistance heating wire and an electrode in a specific shape are made in a graphical mode, and a through hole is etched outside a metal resistance wire and an electrode area on the silicon substrate to serve as a liquid atomizing channel.
The existing ceramic atomizing core is prepared by adopting a porous ceramic sintering technology, so that a structure with consistent pore diameter cannot be prepared, and liquid atomization is uneven, local overheating and carbonization blockage are easily caused. And because the ceramic has poor heat-conducting property, the atomization speed is slow, and the atomization unevenness is further aggravated.
The existing silicon-based atomizing core has consistent processing aperture and good thermal conductivity, overcomes some defects of the ceramic core, and also brings some problems. With a single silicon substrate structure, limited by mechanical strength, thicker silicon substrates, typically greater than 300 μm, must be used. It is difficult to realize a high aspect ratio via structure due to process capability limitations. The diameter or side length of the hole is usually more than 30 μm, the atomization is not fine and the liquid locking performance is poor. The atomization core with the structure has good thermal conductivity, so the atomization core cannot be in direct contact with a liquid cabin, otherwise, a bin explosion can be caused, and in addition, the liquid storage and locking performance of the atomization core is poor, so the auxiliary liquid isolating, liquid storage and liquid locking materials are needed. Other improved silicon-based atomizing core solutions do not take advantage of and ameliorate the disadvantages of the silicon-based solutions.
At present, the atomizing core has the following defects: 1. the porous apertures of the ceramic atomizing cores are not consistent, so that the ceramic atomizing cores are heated unevenly and are locally overheated and carbonized in a dry burning manner; 2. the ceramic material has poor heat-conducting property, so that the atomization speed is slow; 3. the existing silicon-based atomizing core has large and straight hole diameter due to thickness and process limitation, so that liquid locking cannot be realized and the liquid storage performance is poor; 4. the existing silicon-based atomization core has high heat conductivity, and the liquid directly contacting the liquid storage cabin is easy to explode; 5. the existing porous silicon atomizing core scheme also has the problems of uneven heating and local overheating dry burning carbonization caused by poor process controllability and inconsistent pore diameter.
SUMMERY OF THE UTILITY MODEL
The utility model provides an MEMS silicon-based film hole atomizing core for solving the problems.
In order to achieve the purpose, the utility model adopts the following technical scheme: an MEMS silicon-based film hole atomizing core comprises a silicon substrate sheet, at least one layer of film hole mechanism and a metal electrode, wherein at least one layer of film hole mechanism is fixedly connected to the top surface of the silicon substrate sheet, the metal electrode is fixedly connected to the top of the film hole mechanism, at least one liquid guide hole is formed in the silicon substrate sheet, the liquid guide hole is communicated with the bottom of the silicon substrate sheet and the top of the film hole mechanism through a transverse flow channel, and the transverse flow channel is located in the film hole mechanism;
the diaphragm orifice mechanism includes first layer silica and first layer polycrystalline silicon, first layer silica fixed connection be in on the silicon substrate piece, first layer polycrystalline silicon fixed connection be in on the first layer silica, be provided with one-level microchannel stock solution storehouse in the first layer silica, one-level microchannel stock solution storehouse intercommunication the drain hole, a plurality of one-level atomizer holes have been seted up on the first layer polycrystalline silicon, one-level atomizer hole intercommunication one-level microchannel stock solution storehouse with the top of first layer polycrystalline silicon.
As a further description of the above technical solution:
the liquid guide holes and the first-stage atomization holes are arranged in a staggered mode.
As a further description of the above technical solution:
the metal electrode is fixedly arranged on the first layer of polycrystalline silicon.
As a further description of the above technical solution:
the diaphragm orifice mechanism is two-layer, and the diaphragm orifice mechanism that is located the top includes second floor silicon oxide and second floor polycrystalline silicon, second floor silicon oxide fixed connection be in on the first layer polycrystalline silicon, second floor polycrystalline silicon is stipulated to be connected on the second floor silicon oxide, be provided with second grade microchannel stock solution storehouse in the second floor silicon oxide, second grade microchannel stock solution storehouse intercommunication the one-level atomizer hole, the second grade atomizer hole has been seted up on the second floor polycrystalline silicon, second grade atomizer hole intercommunication second grade microchannel stock solution storehouse with the top of second floor polycrystalline silicon.
As a further description of the above technical solution:
the first-stage atomization holes and the second-stage atomization holes are arranged in a staggered mode in a non-vertical penetrating mode.
As a further description of the above technical solution:
the metal electrode is fixedly arranged on the second layer of polycrystalline silicon.
In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:
1. according to the utility model, the multilayer film hole mechanism is adopted, so that the decomposition of the whole thickness is facilitated, the opening thickness of the primary atomization hole or the secondary atomization hole is reduced, the opening difficulty of the atomization hole is reduced, and the opening of the small-aperture non-straight-through hole of the atomization hole is realized, so that the liquid locking and storing functions are good; the manufacturing process of the holes of the atomization holes is controllable, the consistency is high, the uniformity is good, and the problems of local overheating and dry burning carbonization are solved.
2. In the utility model, the liquid guide holes are not directly communicated with the atomizing holes through the atomizing holes which are arranged in a staggered mode, the liquid guide holes are isolated from the metal electrodes by the multilayer film hole mechanism, and the multilayer film hole mechanism has a certain heat insulation function, so that the liquid guide holes on the silicon substrate sheet can directly contact liquid in the liquid storage bin, and the liquid explosion and bin explosion caused by local overheating are avoided.
3. In the utility model, the atomizing holes which are arranged in a staggered way are used for preventing the liquid guide holes from being directly communicated with the atomizing holes, so that the oil flowing between the first-stage atomizing holes and the liquid guide holes passes through the first-stage micro-channel liquid storage bin, and the oil flowing between the first-stage atomizing holes and the second-stage atomizing holes passes through the second-stage micro-channel liquid storage bin, so that the second-stage micro-channel liquid storage bin has enough large volume, and good liquid locking and storing functions are realized.
4. In the utility model, when the single-layer membrane hole mechanism is used, the metal electrode is positioned above the first-stage micro-channel liquid storage bin, and when the double-layer membrane hole mechanism is used, the metal electrode is positioned above the second-stage micro-channel liquid storage bin, so that the heating efficiency is high, and the atomization speed is high.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment one of an atomizing core of a silicon-based film hole of a MEMS.
Fig. 2 is a schematic structural diagram of a second embodiment of the MEMS silicon-based film hole atomizing core.
Illustration of the drawings:
1. a silicon substrate slice; 2. a membrane pore mechanism; 3. a metal electrode; 4. a drain hole; 5. a first layer of silicon oxide; 6. a first layer of polycrystalline silicon; 7. a first-level micro-channel liquid storage bin; 8. a primary atomization hole; 9. a second layer of silicon oxide; 10. a second layer of polysilicon; 11. a second-stage micro-channel liquid storage bin; 12. a secondary atomization orifice; 13. and a transverse flow passage.
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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: an MEMS silicon-based film hole atomizing core comprises a silicon substrate sheet 1, at least one layer of film hole mechanism 2 and a metal electrode 3, wherein the at least one layer of film hole mechanism 2 is fixedly connected to the top surface of the silicon substrate sheet 1, the metal electrode 3 is fixedly connected to the top of the film hole mechanism 2, at least one liquid guide hole 4 is formed in the silicon substrate sheet 1, the liquid guide hole 4 is communicated with the bottom of the silicon substrate sheet 1 and the top of the film hole mechanism 2 through a transverse flow channel 13, and the transverse flow channel 13 is positioned in the film hole mechanism 2;
the membrane hole mechanism 2 comprises a first layer of silicon oxide 5 and a first layer of polycrystalline silicon 6, the first layer of silicon oxide 5 is fixedly connected to the silicon substrate sheet 1, the first layer of polycrystalline silicon 6 is fixedly connected to the first layer of silicon oxide 5, a first-level micro-channel liquid storage bin 7 is arranged in the first layer of silicon oxide 5, the first-level micro-channel liquid storage bin 7 is communicated with the liquid guide hole 4, a plurality of first-level atomizing holes 8 are formed in the first layer of polycrystalline silicon 6, and the first-level atomizing holes 8 are communicated with the first-level micro-channel liquid storage bin 7 and the top of the first layer of polycrystalline silicon 6;
the liquid guide holes 4 and the primary atomizing holes 8 are arranged in a staggered mode, so that the primary atomizing holes 8 are not directly communicated with the liquid guide holes 4, oil flowing between the primary atomizing holes 8 and the liquid guide holes 4 passes through the primary micro-channel liquid storage bin 7, the primary micro-channel liquid storage bin 7 has a large enough volume, and good liquid locking and storing functions are achieved;
the metal electrode 3 is fixedly arranged on the first layer of polycrystalline silicon 6, the metal electrode 3 is positioned above the primary micro-channel liquid storage bin 7, the heating efficiency is high, and the atomization speed is high;
the membrane hole mechanism 2 is two layers, the membrane hole mechanism 2 positioned above comprises a second layer of silicon oxide 9 and a second layer of polysilicon 10, the second layer of silicon oxide 9 is fixedly connected on the first layer of polysilicon 6, the second layer of polysilicon 10 is connected on the second layer of silicon oxide 9 in a specified way, a second-level micro-channel liquid storage bin 11 is arranged in the second layer of silicon oxide 9, the second-level micro-channel liquid storage bin 11 is communicated with the first-level atomizing hole 8, a second-level atomizing hole 12 is arranged on the second layer of polysilicon 10, the second-level atomizing hole 12 is communicated with the second-level micro-channel liquid storage bin 11 and the top of the second layer of polysilicon 10, the multilayer membrane hole mechanism 2 is favorable for the decomposition of the whole thickness, the opening thickness of the first-level atomizing hole 8 or the second-level atomizing hole 12 is reduced, the opening difficulty of the atomizing holes is reduced, and the opening of small-aperture non-through holes of the atomizing holes is realized, thereby having good liquid locking and storing functions; the manufacturing process of the opening of the atomization hole is controllable, the consistency is high, the uniformity is good, and the problems of local overheating and dry burning carbonization are solved; the atomizing holes which are arranged in a staggered mode enable the liquid guide holes 4 not to be directly communicated with the atomizing holes, the liquid guide holes 4 are isolated from the metal electrodes 3 by the multilayer film hole mechanism 2, and the multilayer film hole mechanism 2 has a certain heat insulation function, so that the liquid guide holes 4 in the silicon substrate sheet 1 can be directly contacted with liquid in the liquid storage bin, and liquid explosion and bin explosion caused by local overheating are avoided;
the primary atomization holes 8 and the secondary atomization holes 12 are arranged in a non-up-down penetrating and staggered mode, so that the primary atomization holes 8 are not directly communicated with the secondary atomization holes 12, oil flowing between the primary atomization holes 8 and the secondary atomization holes 12 passes through the secondary micro-channel liquid storage bin 11, the secondary micro-channel liquid storage bin 11 is large enough in volume, and good liquid locking and storage functions are achieved;
the metal electrode 3 is fixedly arranged on the second layer of polycrystalline silicon 10, the metal electrode 3 is positioned above the second-level micro-channel liquid storage bin 11, the heating efficiency is high, and the atomization speed is high.
The working principle is as follows: at first, fluid enters into one-level microchannel stock solution storehouse 7 from drain hole 4 and keeps in, secondly, metal electrode 3 ohmic heating, the preliminary atomizing of oil heating in one-level microchannel stock solution storehouse 7 to enter into second grade microchannel stock solution storehouse 11 through one-level atomizing hole 8, and finally, metal electrode 3 lasts the heating, and the preliminary atomizing fluid in second grade microchannel stock solution storehouse 11 forms atomizing smog through atomizing heating again, and atomizing smog is discharged through second grade atomizing hole 12.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (6)
1. An MEMS silicon-based membrane hole atomizing core is characterized in that: the device comprises a silicon substrate sheet (1), at least one layer of film hole mechanism (2) and a metal electrode (3), wherein at least one layer of film hole mechanism (2) is fixedly connected to the top surface of the silicon substrate sheet (1), the metal electrode (3) is fixedly connected to the top of the film hole mechanism (2), at least one liquid guide hole (4) is formed in the silicon substrate sheet (1), the liquid guide hole (4) is communicated with the bottom of the silicon substrate sheet (1) and the top of the film hole mechanism (2) through a transverse flow channel (13), and the transverse flow channel (13) is positioned in the film hole mechanism (2);
membrane hole mechanism (2) include first layer silica (5) and first layer polycrystalline silicon (6), first layer silica (5) fixed connection be in on silicon substrate piece (1), first layer polycrystalline silicon (6) fixed connection be in on first layer silica (5), be provided with one-level microchannel stock solution storehouse (7) in first layer silica (5), one-level microchannel stock solution storehouse (7) intercommunication drain hole (4), a plurality of one-level atomizer hole (8) have been seted up on first layer polycrystalline silicon (6), one-level atomizer hole (8) intercommunication one-level microchannel stock solution storehouse (7) with the top of first layer polycrystalline silicon (6).
2. The atomizing core for the MEMS silicon-based film holes as set forth in claim 1, wherein the liquid guide holes (4) and the primary atomizing holes (8) are arranged in a staggered manner.
3. The atomizing core for the silicon-based membrane pores of MEMS as claimed in claim 1, wherein said metal electrode (3) is fixedly disposed on said first layer of polysilicon (6).
4. The MEMS silicon-based membrane pore atomizing core according to claim 1, wherein the membrane pore mechanism (2) is two layers, the membrane pore mechanism (2) located above comprises a second layer of silicon oxide (9) and a second layer of polysilicon (10), the second layer of silicon oxide (9) is fixedly connected to the first layer of polysilicon (6), the second layer of polysilicon (10) is connected to the second layer of silicon oxide (9) in a specified manner, a second-level micro-channel liquid storage bin (11) is arranged in the second layer of silicon oxide (9), the second-level micro-channel liquid storage bin (11) is communicated with the first-level atomizing hole (8), a second-level atomizing hole (12) is formed in the second layer of polysilicon (10), and the second-level atomizing hole (12) is communicated with the second-level micro-channel liquid storage bin (11) and the top of the second layer of polysilicon (10).
5. The atomizing core for the MEMS silicon-based film holes is characterized in that the primary atomizing holes (8) and the secondary atomizing holes (12) are arranged in a staggered mode in a non-vertical penetrating mode.
6. The atomizing core for the silicon-based membrane pores of MEMS as claimed in claim 4, wherein said metal electrode (3) is fixedly disposed on said second layer of polysilicon (10).
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| CN202122113888.8U CN216147263U (en) | 2021-09-02 | 2021-09-02 | MEMS silicon-based membrane hole atomizing core |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113647696A (en) * | 2021-09-02 | 2021-11-16 | 美满芯盛(杭州)微电子有限公司 | MEMS silicon-based film hole atomizing core and manufacturing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113647696A (en) * | 2021-09-02 | 2021-11-16 | 美满芯盛(杭州)微电子有限公司 | MEMS silicon-based film hole atomizing core and manufacturing method thereof |
| CN113647696B (en) * | 2021-09-02 | 2024-07-05 | 美满芯盛(杭州)微电子有限公司 | MEMS silicon-based membrane hole atomization core and manufacturing method thereof |
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