CN207821111U - A kind of surface acoustic wave drainage set - Google Patents
A kind of surface acoustic wave drainage set Download PDFInfo
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- CN207821111U CN207821111U CN201820134324.8U CN201820134324U CN207821111U CN 207821111 U CN207821111 U CN 207821111U CN 201820134324 U CN201820134324 U CN 201820134324U CN 207821111 U CN207821111 U CN 207821111U
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- acoustic wave
- surface acoustic
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Abstract
The utility model discloses a kind of surface acoustic wave drainage sets comprising piezoelectric substrate (1), the first interdigital transducer (51), containing liquid chamber (6) and fluid channel (8).The containing liquid chamber (6) and fluid channel (8) are fitted tightly over the surface of the piezoelectric substrate (1)；First interdigital transducer (51) and fluid channel (8) are arranged in the both sides of the containing liquid chamber (6)；The containing liquid chamber (6) is connected to fluid channel (8).The surface acoustic wave drainage set of the utility model can ensure that the continual and steady pumping and fully atomization in time of tobacco juice, solves technological deficiency existing for passive type drain, avoids the generation of dry combustion method phenomenon, so as to improve suction quality, the user experience is improved.
Description
Technical field
The utility model belongs to electronic cigarette technical field, and in particular to a kind of surface acoustic wave drainage set.
Background technology
In recent years, under global tobacco control situation and the dual-pressure of public health public opinion, the development of traditional cigarette is by more
It restricts more, electronic cigarette is just being increasingly subject to the universal blueness of consumers in general as a kind of novel Less harmful cigarette substitute
It looks at, sustainable development situation is presented in global electronic cigarette market.
Existing electronic cigarette, it is most be atomized with electrothermal based on, small part uses ultrasonic atomization.Electrothermal is atomized
Based on heat-conduction principle, electronic cigarette work is triggered by gas flow transducer, mechanical key or touch controlled key, turning circuit is given by nickel
Heating wire made of evanohm, stainless steel alloy, 200 alloy of nickel or titanium alloy coiling is powered, and heating tobacco juice is atomized that form gas molten
Glue is simultaneously sucked for user.Although electrothermal Atmized electronic cigarrette heat conduction rate is fast, nebulization efficiency is high, electronic cigarette continuous sucking process
In, persistently overheating up to 500-600 DEG C of heating wire, there are while potential security risk, tobacco juice high temperature pyrolysis can discharge aldehyde
The harmful components such as class, healthy hidden danger are big.Ultrasonic atomization causes vibrating reed high-frequency resonant using the high frequency oscillation of ultrasonic transducer,
And then ultrasonic directional pressure is generated, make tobacco juice surface elevation, cavitation occurs around the liquid level of protuberance, tobacco juice is made to be atomized
Generate aerosol.Although compared with electrothermal Atmized electronic cigarrette, the non-high thermal characteristics of ultrasonic atomization electronic cigarette makes safety
It improves, the reduction of harmful substance burst size, however since ultrasonic wave is a kind of bulk acoustic wave, energy can be uncontrollably in communication process
It spreads around, causing tobacco juice to be atomized, power consumption is high, rate is slow, efficiency is low, it is difficult to it is uniform continuously and stably to generate particle diameter distribution
Aerosol, and it is bad for high viscosity tobacco juice atomizing effect.In addition, it is noted that the electricity based on aforementioned 2 kinds of atomizing types
Sub- cigarette, the also following common problem of generally existing：(1) passive drain is carried out by the effect of drain material capillary, drain rate can not
It controls, is unstable, when drain rate is less than atomization rates, being easy dry combustion method and generate peculiar smell, seriously affect suction quality and sense organ body
It tests；(2) belong to contact atomization, tobacco juice is in direct contact with heating wire or vibrating reed, is easy sintering adherency, and then influence fever
The atomization of silk or vibrating reed, or even shorten its service life.Therefore, the prior art is urgently improved and is broken through.
Utility model content
In view of above-mentioned deficiencies of the prior art, the utility model is by the work(of the unique advantage of surface acoustic wave techniques and electronic cigarette
Energy feature, performance requirement organically combine, and cause stream effect and standing wave surface acoustic wave atomization mechanism based on surface acoustic wave sound, provide one
Kind realizing that active drain, surface acoustic wave are non-contact by surface acoustic wave is atomized and the electronic cigarette system of surface acoustic wave, effective gram
The electrothermal atomization quickly high potential safe and healthy risk of thermal initiation, ultrasonic atomization high cost with low efficiency, aerosol particle diameter distribution are taken
It is uneven, be not suitable for the defect of high viscosity tobacco juice atomization, and rationally solve electronic cigarette passive type drain in the prior art and make
Obtain the problem of suction quality is bad, contact atomization influences heating wire or vibrating reed atomization or service life.
The utility model discloses a kind of surface acoustic wave drainage sets comprising piezoelectric substrate 1, the first interdigital transducer
51, containing liquid chamber 6 and fluid channel 8.First interdigital transducer 51, the containing liquid chamber 6 and fluid channel 8 are fitted tightly over the pressure
The surface of electric substrate 1, first interdigital transducer 51 and fluid channel 8 are arranged in the both sides of the containing liquid chamber 6；The containing liquid chamber
6 are connected to fluid channel 8.
Preferably, first interdigital transducer 51 is finger cross shaped head, for the metal in the piezoelectric substrate 1
Film.
Preferably, the metallic film is one of aluminium film, Copper thin film or gold thin film.
Preferably, 1 material of the piezoelectric substrate is one kind in quartz, piezoelectric ceramics, lithium tantalate or lithium niobate.
Preferably, the piezoelectric substrate 1 is the lithium niobate that Y cuts the 128.68 ° of directions X, thickness, electromechanical coupling factor, temperature
The spread speed for spending coefficient and surface acoustic wave is respectively 0.5mm, 5.5%, -72 × 10-6/ DEG C and 3992m/s.
Preferably, the containing liquid chamber 6 and/or 8 material of the fluid channel are high-boron-silicon glass or dimethyl silicone polymer
It is a kind of.
Preferably, the traveling wave pattern surface acoustic wave that first interdigital transducer 51 excites will be stored in the containing liquid chamber 6
Tobacco juice be actively pumped to the fluid channel 8.
Compared with prior art, the utility model has the beneficial effects that：
(1) surface acoustic wave is a kind of mechanical wave propagated along elastic fluid surface, and energy is concentrated mainly on dielectric surface,
And exponentially decay with depth.Its energy directional concentrates characteristic so that nebulization efficiency is high, can continuously and stably generate uniform particle sizes
The good aerosol of property, and be more suitable for than ultrasonic wave being atomized highly viscous tobacco juice.In addition, the driving frequency of surface acoustic wave is usually
10MHz-500MHz, an order of magnitude higher than ultrasonic wave 20kHz-3MHz.By the relational expression of aerosol grain size and frequency(wherein, d is aerosol grain size, and γ is tobacco juice surface tension, and ρ is tobacco juice density, and f is driving frequency)
It learns, aerosol grain size is inversely proportional to 2/3 power of driving frequency.Therefore, compared with ultrasonic atomization, surface acoustic wave atomization generates
Aerosol grain size smaller, be not easy to remain on oral mucosa or lingual surface, suction comfort it is stronger, also more alcohol is just thin for fragrance
It is greasy.
(2) surface acoustic wave enters the acoustic energy realization atomization of tobacco juice by diffraction, and driving power is generally 0.5W-3W, generates heat
Measure it is small, in addition piezoelectric substrate have certain heat dissipation effect, even if when continuous sucking, heat is not easy to accumulate, temperature will not be fast
Speed rises, and greatly reduces the possibility of high temperature pyrolysis.Therefore, surface acoustic wave atomization has a safety feature, and harmful substance is released
It high-volume will certainly be also atomized than electrothermal much lower.
(3) the electronic cigarette system integration of the utility model has liquid guiding cavity, causes stream effect based on surface acoustic wave sound, utilizes first
The traveling wave pattern surface acoustic wave that interdigital transducer generates provides driving force to realize that tobacco juice actively pumps, and drives work(by adjusting
Rate accurately controls tobacco juice drain rate, it is made to be adapted with atomization rates, it is ensured that the continual and steady pumping of tobacco juice and in time fills
Point atomization, solve technological deficiency existing for passive type drain, avoid dry combustion method phenomenon generation, so as to improve suction quality,
The user experience is improved.
(4) the electronic cigarette system of the utility model is swashed by the second interdigital transducer and third interdigital transducer collective effect
The standing wave mode surface acoustic wave of hair is not straight with energy converter to realize the non-contact atomization to tobacco juice liquid film in T-type fibrous paper, tobacco juice
Contact, the problem of being sintered adherency on the transducer there is no tobacco juice and influence energy converter working performance or service life in turn.
In addition, the energy radix of standing wave mode surface acoustic wave is big, it is strong to the atomization ability of tobacco juice, therefore the electronic cigarette system of the utility model
System can generate sufficiently large amount of smoke within the unit interval, and user can obtain rapidly suction satisfaction.
Description of the drawings
Fig. 1 is the structure that the utility model realizes active drain and the electronic cigarette system of non-contact atomization by surface acoustic wave
Schematic diagram；
Fig. 2 is the drain schematic diagram of the surface acoustic wave of the utility model；
Fig. 3 is the contactless atomization schematic diagram of the surface acoustic wave of the utility model.
Reference sign：1. piezoelectric substrate, 2. liquid guiding cavities, 3. atomization chambers, 4. feed ports, 51. first interdigital transducings
Device, 52. second interdigital transducers, 53. third interdigital transducers, 6. containing liquid chambers, 7. liquid injection ports, 8. fluid channels, 9. liquid outlets,
10.T fiber type paper, 11. air inlets, 12. suction nozzles, 13. isolation boards.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below with reference to attached drawing and reality
Example is applied, the utility model is described in further detail.
The structural schematic diagram of the surface acoustic wave electronic cigarette system of the utility model embodiment is as shown in Figure 1, the system includes
Piezoelectric substrate 1, liquid guiding cavity 2, atomization chamber 3 and feed port 4.The liquid guiding cavity 2 is set to the piezoelectricity base with the atomization chamber 3
1 top of bottom, two cavitys are equipped with isolation board 13 close to placement, centre.Liquid guiding cavity and the partial enlarged view of atomization chamber see respectively Fig. 2 and
Fig. 3.The feed port 4 is set to 1 outside of the piezoelectric substrate, external high-frequency signal source.The liquid guiding cavity 2 is interdigital by first
Energy converter 51, containing liquid chamber 6, the liquid injection port 7 at the top of containing liquid chamber 6 and the composition of fluid channel 8 being connected to containing liquid chamber 6.It is described
3 bottom of atomization chamber is provided with T-type fibrous paper 10, the second interdigital transducer 52 and third interdigital transducer 53, the side of atomization chamber 3
And top is respectively arranged with air inlet 11 and suction nozzle 12.
First interdigital transducer 51, containing liquid chamber 6, fluid channel 8, the second interdigital transducer 52, third interdigital transducer
53 and T-type fibrous paper 10 vertically fit closely in 1 surface of piezoelectric substrate.The piezoelectric substrate 1 is by the material with piezoelectric property
It constitutes, such as quartz, piezoelectric ceramics, lithium tantalate or lithium niobate.It is preferred that Y cuts the lithium niobate in the 128.68 ° of directions X, thickness, machine
Electric coupling coefficient, temperature coefficient and acoustic surface wave propagation speed are respectively 0.5mm, 5.5%, -72x10-6/ DEG C and 3992m/s.Institute
Finger will be had using micro fabrication by stating the first interdigital transducer 51, the second interdigital transducer 52 and third interdigital transducer 53
The metallic films sputter such as aluminium, copper or gold of cross shaped head is deposited in the piezoelectric substrate after surface polishes and is formed, and by setting
Feed port 4 on the outside of piezoelectric substrate is connect with high-frequency signal source.6 side of the containing liquid chamber is placed with the first interdigital transducer
51, the other side on the other side is connected to fluid channel 8.The material selection high-boron-silicon glass or poly- diformazan of containing liquid chamber 6 and fluid channel 8
Radical siloxane.For exciting traveling wave pattern surface acoustic wave, the tobacco juice to be stored in containing liquid chamber 6 carries first interdigital transducer 51
For driving force, and tobacco juice is actively pumped to fluid channel 8.The T-type fibrous paper 10 is embedded into fluid channel 8 by liquid outlet 9, uses
Liquid film is formed in evenly dispersed tobacco juice and quickly, material selection polyester fiber or other organic porous materials.Described second is interdigital
Energy converter 52 and third interdigital transducer 53 are positioned over T-type fibrous paper both sides in opposite directions, apart from one phase bit of upper formation, common work
The tobacco juice liquid film in T-type fibrous paper is atomized into aerosol with the standing wave mode surface acoustic wave of generation.
Electronic cigarette system by tobacco juice by liquid injection port 7 before use, be injected into containing liquid chamber 6, until tobacco juice liquid level reaches certain
Highly.At normal atmospheric pressure, due to the coefficient of viscosity of 8 inner wall of the surface tension of tobacco juice and 6 inner wall of containing liquid chamber and fluid channel
It is constant, therefore tobacco juice will not flow automatically.Start high-frequency signal source, the first interdigital transducer 51, the second interdigital transducer 52 and third
Interdigital transducer 53 is energized by feed port 4 imposes ac signal, and energy converter utilizes the inverse pressure of piezoelectric substrate itself
Electric signal is changed into acoustical signal by electrical effect, the sound surface for being formed with external signal same frequency and being propagated along piezoelectric substrate surface
Wave.When in the traveling wave pattern acoustic surface wave propagation to containing liquid chamber 6 that the first interdigital transducer 51 generates, acoustic energy diffraction enters cigarette
Acoustic streaming coupling effect occurs for liquid so that containing liquid chamber 6 is beaten with pressure difference, the pressure field balance of containing liquid chamber 6 is formed at liquid outlet 9
Broken, tobacco juice flows through fluid channel 8 and is actively pumped to liquid outlet 9, and Quick uniform disperses to form smoke liquid solution in T-type fibrous paper 10
Film.Pressure difference can be changed by adjusting driving power, the quantified controlling of drain rate is realized, to ensure the continual and steady pump of tobacco juice
It send and fully atomization in time.The traveling wave pattern surface acoustic wave that second interdigital transducer 52 and third interdigital transducer 53 excite is opposite
The larger standing wave mode surface acoustic wave of energy radix can be formed after propagating interference superposition.When standing wave mode surface acoustic wave and T-type are fine
When tobacco juice liquid film on dimension paper 10 is in contact, the energy carried can generate strong disturbance to liquid film Free Surface so that liquid film
Own face tension is not enough to keep the stabilization of geometric shape, and ruptures generation aerosol.
The foregoing is merely the preferred embodiments of the utility model, are not intended to limit the utility model.For this field
Technical staff for, without creative efforts, it is all according to the utility model disclose technical solution or skill
All any modification, equivalent and improvement etc. made by art feature, should all belong to the scope of protection of the utility model.
Claims (7)
1. a kind of surface acoustic wave drainage set, which is characterized in that it includes piezoelectric substrate (1), the first interdigital transducer (51), storage
Liquid storehouse (6) and fluid channel (8)；First interdigital transducer (51), containing liquid chamber (6) and fluid channel (8) are fitted tightly over described
The surface of piezoelectric substrate (1), first interdigital transducer (51) and fluid channel (8) are arranged in the both sides of the containing liquid chamber (6)；
The containing liquid chamber (6) is connected to fluid channel (8).
2. surface acoustic wave drainage set according to claim 1, which is characterized in that first interdigital transducer (51) is
Finger cross shaped head, for the metallic film in the piezoelectric substrate (1).
3. according to the surface acoustic wave drainage set described in claim 2, which is characterized in that the metallic film is aluminium film, copper is thin
One of film or gold thin film.
4. surface acoustic wave drainage set according to claim 1, which is characterized in that piezoelectric substrate (1) material is stone
One kind in English, piezoelectric ceramics, lithium tantalate or lithium niobate.
5. surface acoustic wave drainage set according to claim 4, which is characterized in that the piezoelectric substrate (1) is that Y cuts X
The lithium niobate in 128.68 ° of directions, thickness, electromechanical coupling factor, temperature coefficient and surface acoustic wave spread speed be respectively
0.5mm, 5.5%, -72 × 10-6/ DEG C and 3992m/s.
6. surface acoustic wave drainage set according to claim 1, which is characterized in that the containing liquid chamber (6) and/or described micro-
Runner (8) material is one kind of high-boron-silicon glass or dimethyl silicone polymer.
7. surface acoustic wave drainage set according to claim 1, which is characterized in that first interdigital transducer (51) is swashed
The tobacco juice stored in the containing liquid chamber (6) is actively pumped to the fluid channel (8) by the traveling wave pattern surface acoustic wave of hair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820134324.8U CN207821111U (en) | 2018-01-26 | 2018-01-26 | A kind of surface acoustic wave drainage set |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820134324.8U CN207821111U (en) | 2018-01-26 | 2018-01-26 | A kind of surface acoustic wave drainage set |
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| CN207821111U true CN207821111U (en) | 2018-09-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108095200A (en) * | 2018-01-26 | 2018-06-01 | 云南中烟工业有限责任公司 | A kind of surface acoustic wave drainage set |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108095200A (en) * | 2018-01-26 | 2018-06-01 | 云南中烟工业有限责任公司 | A kind of surface acoustic wave drainage set |
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