CN114259086A - Atomizer, electronic cigarette using same and atomization method - Google Patents
Atomizer, electronic cigarette using same and atomization method Download PDFInfo
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- CN114259086A CN114259086A CN202010973371.3A CN202010973371A CN114259086A CN 114259086 A CN114259086 A CN 114259086A CN 202010973371 A CN202010973371 A CN 202010973371A CN 114259086 A CN114259086 A CN 114259086A
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Abstract
The invention discloses an atomizer which comprises a film bulk acoustic resonator and an oscillator circuit, wherein the film bulk acoustic resonator comprises a piezoelectric film, a first electrode layer and a second electrode layer, the first electrode layer and the second electrode layer are respectively arranged on the upper surface and the lower surface of the piezoelectric film, the first electrode layer and the second electrode layer are respectively electrically connected to two ends of the oscillator circuit, a tobacco tar conveying mechanism is arranged above the first electrode layer, and the tobacco tar conveying mechanism is used for conveying tobacco tar to the upper surface of the first electrode layer. The atomizer provided by the invention has the advantages of high energy conversion rate, high energy utilization rate, high atomization efficiency, good atomization effect consistency, no need of a heating element, simple structure and small volume. The invention also provides the electronic cigarette and an atomization method.
Description
Technical Field
The invention relates to the field of atomization, in particular to an atomizer, an electronic cigarette using the atomizer and an atomization method.
Background
The electronic cigarette adopting the electric heating mode can solve the health and environmental problems caused by the traditional smoking mode, but the electronic cigarette adopting the electric heating mode has high working temperature, and the high temperature can cause the tobacco tar, the heating element and the material of the oil guide pipe to generate a series of complex decomposition, cracking, carbonization and dissolution reactions, thereby influencing the smoking quality and having potential health hidden troubles.
Problem to the electron cigarette of electrical heating mode brings, patent CN205922888U provides an ultrasonic nebulizer, including the ultrasonic atomization piece, the front of ultrasonic atomization piece, the back communicate with each other with the air duct of electron cigarette, oil storage part respectively, the ultrasonic atomization piece includes piezoceramics, micropore area and metal substrate, be provided with 1 at least micropore area that is used for smog to pass through on the ultrasonic atomization piece and around the heating element that micropore area set up, be provided with heat insulation part between heating element and the piezoceramics, heating element, piezoceramics set up respectively in the back of ultrasonic atomization piece, front.
However, the ultrasonic atomizer has low energy conversion rate, low energy utilization rate, low atomization efficiency and poor atomization effect consistency of the ultrasonic atomization element.
Disclosure of Invention
The invention mainly aims to provide an atomizer, which solves the problems of low energy conversion rate, low energy utilization rate, low atomization efficiency and poor atomization effect consistency of an ultrasonic atomizer.
In order to solve the above problems, the present invention provides an atomizer, including a film bulk acoustic resonator and an oscillator circuit, where the film bulk acoustic resonator includes a piezoelectric film, a first electrode layer and a second electrode layer, the first electrode layer and the second electrode layer are respectively disposed on an upper surface and a lower surface of the piezoelectric film, and the first electrode layer and the second electrode layer are respectively electrically connected to two ends of the oscillator circuit, and a tobacco tar conveying mechanism is disposed above the first electrode layer and is configured to convey tobacco tar to the upper surface of the first electrode layer.
Optionally, the first electrode layer and the second electrode layer are made by a photolithography process.
Optionally, an insulating layer is disposed on an upper surface of the first electrode layer.
Optionally, the tobacco tar output by the tobacco tar conveying mechanism is located at the center of the upper surface of the first electrode layer.
Optionally, the oscillator circuit comprises a signal source for generating a signal having the same frequency as the natural frequency of the film bulk acoustic resonator.
Optionally, the oscillator circuit further comprises a signal amplification circuit electrically connected to the signal source, the signal amplification circuit for boosting the energy of the signal.
Optionally, the oscillator circuit comprises a phase shifting network for adjusting a signal frequency of the oscillator circuit and a signal amplifying circuit electrically connected to the phase shifting network for supplementing energy lost by atomization.
Optionally, a substrate is arranged below the film bulk acoustic resonator.
Optionally, the substrate is a cavity-backed substrate, an air gap substrate, or a solid-state mount substrate.
Optionally, the atomizer further includes an oil storage bin, the tobacco tar conveying mechanism includes a liquid guiding structure, a liquid storage structure, and a liquid permeating structure, which are connected in sequence, the oil storage bin is connected with the liquid guiding structure, and the tobacco tar is exuded from the liquid permeating structure and flows to the upper surface of the first electrode layer.
Optionally, a duct is arranged in the liquid guiding structure, a choke is arranged on the duct, and the aperture of the choke is smaller than that of the duct.
Optionally, the liquid conducting structure is made of glass.
Optionally, the reservoir structure is made of a porous material.
Optionally, the porous material has a porosity greater than 80%, an open porosity greater than 90%, and a pore diameter less than 2 microns.
Optionally, the porous material is one of a metal foam, a metal fiber, a porous ceramic, and a fiber material.
Optionally, the liquid permeable structure is made of porous ceramic.
Optionally, the porous ceramic has a porosity greater than 60%, an open porosity greater than 90%, and a pore diameter greater than 2 microns.
Optionally, the piezoelectric film is made of a piezoelectric crystal material.
Optionally, the piezoelectric crystal material is one of quartz, lithium niobate, lithium tantalate, and a silicon wafer.
Optionally, the first electrode layer and the second electrode layer are made of a metal material.
Optionally, the metal material is one of aluminum, copper, gold, and platinum.
The invention also provides an electronic cigarette which comprises the atomizer.
The invention also provides an atomization method using the atomizer, which comprises the following steps:
the oscillator circuit generates electromagnetic waves, and the frequency of the electromagnetic waves is the same as the natural frequency of the film bulk acoustic resonator;
the electromagnetic wave is transmitted to the film bulk acoustic resonator and converted into bulk acoustic wave;
the bulk acoustic wave propagates along the piezoelectric film and to the upper surface of the first electrode layer;
the bulk acoustic waves atomize the soot on the upper surface of the first electrode layer.
By applying the technical scheme of the invention, when the frequency of the electromagnetic wave is the inherent frequency of the film bulk acoustic resonator, the conversion rate to the bulk acoustic wave is high, and correspondingly, the energy conversion rate and the energy utilization rate of the atomizer are high; moreover, as the bulk acoustic wave frequency generated by the atomizer is high, the atomization efficiency of the atomizer is high; in addition, due to the high quality factor frequency selection characteristic of the film bulk acoustic resonator of the atomizer, the atomization effect consistency of the atomizer is good.
Because the atomization efficiency is high, a heating element is not needed to be arranged in the atomizer to assist atomization, so that the atomizer is simple in structure and small in size; the film bulk acoustic resonator of the atomizer has very small volume due to the extremely thin thickness of the piezoelectric film and the first and second electrode layers, so that the volume of the atomizer is further reduced.
Drawings
FIG. 1(a) shows a perspective view of an atomizer of a cavity-backed substrate according to an embodiment of the present invention;
FIG. 1(b) shows a perspective view of an atomizer for an air gap type substrate according to an embodiment of the present invention;
FIG. 1(c) shows a perspective view of an atomizer of a solid mount substrate according to an embodiment of the present invention;
FIG. 2(a) is a schematic diagram of circuit elements of a signal source oscillator circuit according to an embodiment of the present invention;
FIG. 2(b) shows a schematic diagram of circuit elements of a self-oscillating oscillator circuit according to an embodiment of the invention;
fig. 3 shows a cross-sectional view of a fluid-directing structure in accordance with an embodiment of the present invention.
Reference numerals
1. A piezoelectric film; 2. a first electrode layer and a second electrode layer; 3. an atomization zone; 4. a drainage structure; 41. a substrate; 42. a duct; 43. a choke; 5. a liquid storage structure; 6. a liquid-permeable structure; 7. a substrate; 8. an oscillator circuit; 81. a signal amplification circuit; 82. a signal source; 83. a phase shifting network; 9. a low acoustic impedance layer; 10. a high acoustic impedance layer.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to these embodiments. On the contrary, the invention is described in connection with the embodiments for the purpose of covering alternatives or modifications that may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Moreover, some of the specific details have been left out of the description in order to avoid obscuring or obscuring the focus of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.
In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the present invention.
The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The ultrasonic atomizer has the advantages of low energy conversion rate, low energy utilization rate, low atomization efficiency and poor atomization effect consistency.
As shown in fig. 1(a), 1(b), and 1(c), the present invention provides an atomizer, which includes a film bulk acoustic resonator and an oscillator circuit 8, where the film bulk acoustic resonator includes a piezoelectric film 1, a first electrode layer and a second electrode layer 2, the first electrode layer and the second electrode layer 2 are respectively disposed on an upper surface and a lower surface of the piezoelectric film 1, the first electrode layer and the second electrode layer 2 are respectively electrically connected to two ends of the oscillator circuit 8, and a smoke oil delivery mechanism is disposed above the first electrode layer and used for delivering smoke oil to the upper surface of the first electrode layer.
The oscillator circuit 8 generates electromagnetic waves, and the frequency of the electromagnetic waves is the same as the natural frequency of the film bulk acoustic resonator; the electromagnetic wave is transmitted to the film bulk acoustic resonator, and is converted into a bulk acoustic wave under the action of the inverse piezoelectric effect, and the bulk acoustic wave is transmitted along the piezoelectric film 1 and is transmitted to the upper surface of the first electrode layer, so that the tobacco tar on the upper surface of the first electrode layer is atomized.
Because the bulk acoustic wave frequency generated by the atomizer is high, the frequency of the electromagnetic wave converted into the bulk acoustic wave is high, when the frequency of the electromagnetic wave is the natural frequency of the film bulk acoustic wave resonator, the conversion rate of the electromagnetic wave to the bulk acoustic wave is high, more electric energy is converted into mechanical energy, namely, the energy conversion rate and the energy utilization rate of the atomizer are high. Moreover, as the bulk acoustic wave frequency generated by the atomizer is high, the speed of atomizing the tobacco tar is high, namely the atomization efficiency of the atomizer is high; in addition, due to the high quality factor frequency selection characteristic of the film bulk acoustic resonator of the atomizer, the bulk acoustic wave frequency consistency of electromagnetic wave conversion is high and is the natural frequency of the film bulk acoustic resonator, namely, the bulk acoustic wave frequencies used for atomization are the same, and the atomization effect consistency of the atomizer is good.
Because the atomization efficiency is high, a heating element is not needed to be arranged in the atomizer to assist atomization, so that the atomizer is simple in structure and small in size; and the film bulk acoustic resonator of the atomizer has very small volume due to the extremely thin thickness of the piezoelectric film 1, the first electrode layer and the second electrode layer 2, so that the volume of the atomizer is further reduced.
Specifically, the first electrode layer and the second electrode layer 2 are manufactured by a photoetching process, so that the film bulk acoustic resonator is free from assembly, parts for connection are not needed, the structure is simple, the size is small, and the atomizer is further simple in structure and small in size.
Specifically, the upper surface of the first electrode layer is provided with an insulating layer to insulate the first electrode layer from other objects except the piezoelectric film. The insulating layer can be made of silicon dioxide or silicon nitride by vacuum evaporation process, and the thickness of the insulating layer is 50-3000 nm.
Specifically, the soot output by the soot conveying mechanism is located at the center of the upper surface of the first electrode layer because the loss of the bulk acoustic wave is minimal at the center of the upper surface of the first electrode layer, and the efficiency of atomizing the soot is highest.
As shown in fig. 2(a), in one embodiment of the present invention, the oscillator circuit 8 includes a signal source 82, and the signal source 82 is used for generating a signal, and the frequency of the signal is the same as the natural frequency of the film bulk acoustic resonator, so that the oscillator circuit 8 can generate an electromagnetic wave with the same frequency as the natural frequency of the film bulk acoustic resonator, so as to convert the electromagnetic wave into a bulk acoustic wave for atomization, thereby improving the energy conversion rate.
The oscillator circuit 8 further comprises a signal amplification circuit 81 electrically connected to the signal source 82, the signal amplification circuit 81 being configured to boost the energy of the signal to ensure that the bulk acoustic wave used for atomization remains at a set intensity.
In another embodiment of the present invention, as shown in fig. 2(b), the oscillator circuit 8 includes a phase shift network 83 and a signal amplifying circuit 81 electrically connected to the phase shift network 83, and the phase shift network 83 is used to adjust the signal frequency of the electromagnetic wave of the oscillator circuit 8, so that the frequency of the electromagnetic wave of the oscillator circuit 8 is the same as the natural frequency of the film bulk acoustic wave resonator, thereby converting the electromagnetic wave into the bulk acoustic wave for atomization, and improving the energy conversion rate, i.e. the bulk acoustic wave oscillator formed by the film bulk acoustic wave resonator and the oscillator circuit 8 forms self-excited oscillation. The signal amplification circuit 81 is used to supplement the energy lost by atomization to ensure that the bulk acoustic wave used for atomization remains at a set intensity.
As shown in fig. 1(a), 1(b), and 1(c), a substrate 7 is provided below the thin film bulk acoustic resonator to support the thin film bulk acoustic resonator.
As shown in fig. 1(a), the substrate 7 may be a cavity-backed substrate, and the blocking of the downward vibration of the bulk acoustic wave is achieved by means of a cavity, as shown in fig. 1(b), the substrate 7 may be an air gap substrate, and the blocking of the downward vibration of the bulk acoustic wave is achieved by means of an air gap, as shown in fig. 1(c), and the substrate 7 may be a solid assembly substrate, and the low-acoustic-impedance layer 9 and the high-acoustic-impedance layer 10 are alternately disposed, and the blocking of the downward vibration of the bulk acoustic wave is achieved by means of both.
Continuing to refer to fig. 1, the atomizer still includes the oil storage storehouse, and tobacco tar conveying mechanism is including the drain structure 4 that connects gradually, stock solution structure 5, sepage structure 6, and the oil storage storehouse is connected with drain structure 4, and the tobacco tar flows out and flows to the upper surface of first electrode layer from sepage structure 6, and the region that the tobacco tar occupies at first electrode layer upper surface is atomization zone 3 to accomplish the transmission that the tobacco tar passes through drain structure 4, stock solution structure 5, sepage structure 6 to atomization zone 3 from the oil storage storehouse in proper order. Stock solution structure 5 has appropriate imbibition ability and higher stock solution ability, consequently possesses the ability of certain temporary storage tobacco tar, can carry partial tobacco tar to store temporarily under the too much condition of tobacco tar at drain structure 4, avoids atomizing district 3 tobacco tar too much, can carry the tobacco tar of self storage to atomizing district 3 transport under the too little condition of tobacco tar at drain structure 4, avoids atomizing district 3 tobacco tar too little. The liquid seepage structure 6 has lower stock solution ability and higher imbibition ability for evenly leading-in the electron tobacco tar in the stock solution structure 5 fast to atomizing area 3.
As shown in fig. 3, the base 41 of the liquid guiding structure 4 is provided with a pore 42, the pore 42 is provided with a choke 43, the pore diameter of the choke 43 is smaller than that of the pore 42, and under the condition that the liquid storage structure 5 and the liquid seepage structure 6 are in a liquid absorption saturation state and the driving pressure is not applied to the oil storage bin, the choke 43 can block or slow down the smoke oil from being led out from the oil storage bin, so as to avoid too much smoke oil in the atomization zone 3.
Specifically, the liquid guide structure 4 is made of glass, has no absorption to tobacco tar, has high chemical stability, and has no adverse effect on the aroma style of the electronic smoke.
In particular, the reservoir structure 5 is made of a porous material. The porosity of the porous material is more than 80%, the opening rate is more than 90%, and the pore diameter is less than 2 microns. The porous material is one of foam metal, metal fiber, porous ceramic and fiber material, has high chemical stability and has no adverse effect on the fragrance style of the electronic smoke; can contain tobacco tar and play the role of buffering and liquid storage.
Specifically, the liquid-permeable structure 6 is made of porous ceramic, and the porous ceramic has good temperature resistance and high chemical stability. The porosity of the porous ceramic is more than 60%, the opening rate is more than 90%, and the pore diameter is more than 2 microns.
Specifically, the piezoelectric film 1 is made of a piezoelectric crystal material. The piezoelectric crystal material is one of quartz, lithium niobate, lithium tantalate and silicon chips.
Specifically, the first electrode layer and the second electrode layer 2 are made of a metal material. The metal material is one of aluminum, copper, gold and platinum.
The invention also provides an electronic cigarette which comprises the atomizer, so that the electronic cigarette has the advantages of high energy conversion rate, high energy utilization rate, high atomization efficiency, good atomization effect consistency, simple structure and small volume.
The invention also provides an atomization method using the atomizer, which comprises the following steps: the oscillator circuit 8 generates electromagnetic waves, and the frequency of the electromagnetic waves is the same as the natural frequency of the film bulk acoustic resonator; the electromagnetic wave is transmitted to the film bulk acoustic resonator and converted into bulk acoustic wave; the bulk acoustic wave propagates along the piezoelectric film 1 and to the upper surface of the first electrode layer; the bulk acoustic waves atomize the soot on the upper surface of the first electrode layer. The atomization method has the advantages of high energy conversion rate, high energy utilization rate, high atomization efficiency and good atomization effect consistency.
Specific embodiments of the atomizer, the electronic cigarette and the atomization method provided by the present application are described below with reference to fig. 1, 2 and 3:
example 1
The atomizer comprises a film bulk acoustic resonator comprising 36 DEG LiTaO and an oscillator circuit 83The piezoelectric ceramic comprises a piezoelectric film 1 with (lithium tantalate) as a substrate material and a first electrode layer and a second electrode layer 2 which are respectively arranged on the upper surface and the lower surface of the piezoelectric film 1, wherein the first electrode layer and the second electrode layer 2 are made of metal aluminum as electrode materials by a photoetching process. The first electrode layer and the second electrode layer have silicon dioxide insulating layers on the surfaces, and the thickness is 500 nm. The tobacco tar conveying mechanism is arranged above the first electrode layer and comprises a liquid guiding structure 4 made of glass, a liquid storage structure 5 made of porous ceramic and a liquid permeating structure 6 made of porous ceramic which are sequentially connected, the oil storage bin is connected with the liquid guiding structure 4, the tobacco tar is seeped out of the liquid permeating structure 6 and flows to the center of the upper surface of the first electrode layer, and the occupied area is an atomizing area 3. On the substrate 41 of the liquid guiding structure 4A choke 43 having a smaller diameter than the tunnel 42 is provided. And a back cavity type substrate is arranged below the film bulk acoustic resonator. And the first electrode layer and the second electrode layer 2 are electrically connected to both ends of the oscillator circuit 8, respectively, and the oscillator circuit 8 includes a signal source 82 and a signal amplification circuit 81 electrically connected to the signal source 82. The electronic cigarette comprises the atomizer.
The tobacco tar flows out from the oil storage bin and flows to the atomization area 3 through the liquid guiding structure 4, the liquid storage structure 5 and the liquid seepage structure 6. The signal source 82 generates a signal having the same frequency as the natural frequency of the film bulk acoustic resonator so that the oscillator circuit 8 can generate an electromagnetic wave having the same frequency as the natural frequency of the film bulk acoustic resonator to be converted into a bulk acoustic wave when propagating to the film bulk acoustic resonator, and the bulk acoustic wave propagates along the piezoelectric film 1 and propagates to the first electrode layer, atomizing the soot. The signal amplification circuit 81 increases the energy of the signal by about 10dBm (decibel-milliwatt), which ensures that the bulk acoustic wave for atomizing the tar is maintained at a predetermined intensity.
Example 2
The atomizer comprises a film bulk acoustic resonator comprising 36 DEG LiTaO and an oscillator circuit 83The piezoelectric ceramic comprises a piezoelectric film 1 with (lithium tantalate) as a substrate material and a first electrode layer and a second electrode layer 2 which are respectively arranged on the upper surface and the lower surface of the piezoelectric film 1, wherein the first electrode layer and the second electrode layer 2 are made of metal aluminum as electrode materials by a photoetching process. The first electrode layer and the second electrode layer have silicon dioxide insulating layers on the surfaces, and the thickness is 200 nm. The tobacco tar conveying mechanism is arranged above the first electrode layer and comprises a liquid guiding structure 4 made of glass, a liquid storage structure 5 made of foam metal and a liquid permeating structure 6 made of porous ceramic, the liquid guiding structure 4, the liquid storage bin and the liquid guiding structure are sequentially connected, the tobacco tar is seeped out of the liquid permeating structure 6 and flows to the center of the upper surface of the first electrode layer, and the occupied area is an atomizing area 3. The base body 41 of the liquid guiding structure 4 is provided with a choke 43 having a smaller pore diameter than the pore passage 42. An air gap type substrate is arranged below the film bulk acoustic resonator. And the first electrode layer and the second electrode layer 2 are electrically connected to both ends of the oscillator circuit 8, respectively, and the oscillator circuit 8 includes a phase shift network 83 and a signal amplification circuit 81 electrically connected to the phase shift network 83. Electronic deviceThe cigarette contains the atomizer.
The tobacco tar flows out from the oil storage bin and flows to the atomization area 3 through the liquid guiding structure 4, the liquid storage structure 5 and the liquid seepage structure 6. The phase shift network 83 adjusts the signal frequency of the electromagnetic wave of the oscillator circuit 8 so that the frequency of the electromagnetic wave of the oscillator circuit 8 is the same as the natural frequency of the film bulk acoustic resonator, thereby converting the electromagnetic wave into a bulk acoustic wave when propagating to the film bulk acoustic resonator, the bulk acoustic wave propagates along the piezoelectric film 1 and propagates to the first electrode layer, and atomized soot, that is, the bulk acoustic wave oscillator composed of the film bulk acoustic resonator and the oscillator circuit 8, forms self-excited oscillation. The signal amplification circuit 81 supplements the energy lost by atomization, ensuring that the bulk acoustic wave used for atomization remains at a set intensity. The bulk acoustic wave which is not consumed by atomization is converted into electromagnetic wave to enter the circuit under the action of the piezoelectric effect, the signal frequency is adjusted through the phase-shifting network 83, the energy lost by atomization is supplemented through the signal amplifying circuit 81, the electromagnetic wave is transmitted to the film bulk acoustic wave resonator again and is converted into bulk acoustic wave for atomization, and therefore a closed loop is formed.
While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more detailed description of the invention, taken in conjunction with the specific embodiments thereof, and that no limitation of the invention is intended thereby. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (23)
1. An atomizer, comprising a film bulk acoustic resonator and an oscillator circuit,
the film bulk acoustic resonator comprises a piezoelectric film, a first electrode layer and a second electrode layer, wherein the first electrode layer and the second electrode layer are respectively arranged on the upper surface and the lower surface of the piezoelectric film, the first electrode layer and the second electrode layer are respectively electrically connected to the two ends of the oscillator circuit, a tobacco tar conveying mechanism is arranged above the first electrode layer, and the tobacco tar conveying mechanism is used for conveying tobacco tar to the upper surface of the first electrode layer.
2. A nebulizer as claimed in claim 1, wherein the first electrode layer and the second electrode layer are made by a photolithographic process.
3. A nebulizer as claimed in claim 1, wherein the upper surface of the first electrode layer is provided with an insulating layer.
4. The atomizer of claim 1, wherein said tobacco delivery mechanism outputs tobacco centrally located on the upper surface of said first electrode layer.
5. A nebulizer as claimed in any one of claims 1 to 4, wherein the oscillator circuit comprises a signal source for generating a signal having the same frequency as the natural frequency of the film bulk acoustic resonator.
6. The nebulizer of claim 5, wherein the oscillator circuit further comprises a signal amplification circuit electrically connected to the signal source, the signal amplification circuit configured to boost the energy of the signal.
7. The nebulizer of any one of claims 1 to 4, wherein the oscillator circuit comprises a phase shifting network and a signal amplification circuit electrically connected to the phase shifting network, the phase shifting network is configured to adjust a signal frequency of the oscillator circuit, and the signal amplification circuit is configured to supplement energy lost by nebulization.
8. The atomizer according to any one of claims 1 to 4, wherein a substrate is provided below the thin film bulk acoustic resonator.
9. The nebulizer of claim 8, wherein the substrate is a cavity-backed substrate, an air gap substrate, or a solid assembly substrate.
10. The atomizer according to any one of claims 1 to 4, further comprising an oil storage bin, wherein the tobacco tar conveying mechanism comprises a liquid guiding structure, a liquid storage structure and a liquid permeating structure which are connected in sequence, the oil storage bin is connected with the liquid guiding structure, and the tobacco tar seeps out of the liquid permeating structure and flows to the upper surface of the first electrode layer.
11. A nebulizer as claimed in claim 10, wherein a tunnel is provided in the liquid guiding structure, a choke is provided on the tunnel, and the aperture of the choke is smaller than that of the tunnel.
12. A nebulizer as claimed in claim 10, wherein the liquid conducting structure is made of glass.
13. A nebulizer as claimed in claim 10, wherein the reservoir structure is made of a porous material.
14. The nebulizer of claim 13, wherein the porous material has a porosity of greater than 80%, an open porosity of greater than 90%, and a pore diameter of less than 2 microns.
15. Atomiser according to claim 13 or 14, characterised in that the porous material is one of a metal foam, a metal fibre, a porous ceramic, a fibrous material.
16. A nebulizer as claimed in claim 10, wherein the liquid permeable structure is made of porous ceramic.
17. The atomizer of claim 16, wherein said porous ceramic has a porosity greater than 60%, an open porosity greater than 90%, and a pore diameter greater than 2 microns.
18. A nebulizer as claimed in any one of claims 1 to 4, wherein the piezoelectric film is made of a piezoelectric crystal material.
19. The nebulizer of claim 18, wherein the piezoelectric crystal material is one of quartz, lithium niobate, lithium tantalate, and silicon wafer.
20. The nebulizer of any one of claims 1 to 4, wherein the first electrode layer and the second electrode layer are made of a metal material.
21. The nebulizer of claim 20, wherein the metallic material is one of aluminum, copper, gold, and platinum.
22. An electronic cigarette, comprising the nebulizer of any one of claims 1 to 21.
23. An atomization method using the atomizer according to any one of claims 1 to 21, comprising the steps of:
the oscillator circuit generates electromagnetic waves, and the frequency of the electromagnetic waves is the same as the natural frequency of the film bulk acoustic resonator;
the electromagnetic wave is transmitted to the film bulk acoustic resonator and converted into a bulk acoustic wave;
the bulk acoustic wave propagates along the piezoelectric film and to the upper surface of the first electrode layer;
the bulk acoustic wave atomizes the tobacco tar on the upper surface of the first electrode layer.
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| CN202010973371.3A CN114259086A (en) | 2020-09-16 | 2020-09-16 | Atomizer, electronic cigarette using same and atomization method |
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| CN202010973371.3A CN114259086A (en) | 2020-09-16 | 2020-09-16 | Atomizer, electronic cigarette using same and atomization method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023221616A1 (en) * | 2022-05-18 | 2023-11-23 | 海南摩尔兄弟科技有限公司 | Electronic atomization device and atomizer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023221616A1 (en) * | 2022-05-18 | 2023-11-23 | 海南摩尔兄弟科技有限公司 | Electronic atomization device and atomizer |
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