Patent Description:
An aerosol is a colloidal dispersion system formed by solid or liquid particles dispersing and suspending in a gaseous medium. The aerosol can be absorbed by human body through the respiratory system to provide users with a new alternative method of absorption. For example, a vaporization device, which can produce an aerosol by baking and heating an herbal or pasty aerosol-forming substrate, is applied in different fields to deliver an inhalable aerosol to users, replacing a conventional product form and a conventional absorption mode.

Generally, the vaporization device vaporizes the aerosol-forming substrate into an aerosol, and common vaporization methods include heating vaporization and ultrasonic vaporization. The principle of the ultrasonic vaporization includes that a microporous ultrasonic vaporization plate is driven to resonate by the high frequency vibration of a piezoceramic; vaporization holes in the microporous ultrasonic vaporization plate continuously and repeatedly deform or vibrate along with the vibration; and a solution is pressed and broken into fine droplets to form vaporized steam. In a microporous ultrasonic vaporization device, a vaporization plate is bonded to the piezoceramic plate. In a process of vaporization, the vaporization plate vibrates at a high frequency, and a liquid (which is not limited to a strong acid, a strong base, and a strong oxidant liquid) enters an adhesive layer between the vaporization plate and the piezoceramic plate due to vaporization vibration, corroding the adhesive layer and causing adhesive failure, which tends to lead to vibration failure to affect product performance and use effect. An example of a vaporization device can be seen in document <CIT>.

Based on this, it is necessary to provide a microporous vaporization assembly and an electronic vaporization device to solve the problem that a microporous ultrasonic vaporization device is prone to vibration failure.

According to an aspect of the application, a microporous vaporization assembly is provided, the microporous vaporization assembly includes:.

The fence part is arranged protruding from a surface of the body part stacked with the piezoceramic plate and surrounds an outer circumference of the piezoceramic plate.

In the foregoing microporous vaporization assembly, the vaporization plate is provided with the fence part. The fence part is arranged to protrude from the surface of the body part facing the piezoceramic plate, and to surround the outer circumference of the piezoceramic plate. Thus, the fence part covers a gap between the piezoceramic plate and the body part, so as to prevent a liquid from permeating between the piezoceramic plate and the body part from an edge of the piezoceramic plate during vaporization, and thus, from corroding an adhesive, thereby ensuring the effective bonding between the piezoceramic plate and the vaporization plate and further ensuring that the vaporization plate can effectively vibrate. In addition, the fence part arranged to protrude from the vaporization plate improves the rigidity of the vaporization plate, so that the vaporization plate can be firmly bonded to the piezoceramic plate. In this way, the vaporization plate is prevented from being bent due to its low rigidity after repeated vibrations, and from being separated from the piezoceramic plate due to bending, so that the bonding stability of the vaporization plate and the piezoceramic plate is further improved.

In addition, the fence part is arranged surrounding the outer circumference of the piezoceramic plate, so that an adhesive bonded between the piezoceramic plate and the vaporization plate is prevented from overflowing from an edge of the vaporization plate during compression, heating, and curing, thereby preventing the adhesive from overflowing and affecting a bonding process. In addition, the fence part is arranged on an outer circumference of the vaporization plate, so that the vibration of the vaporization plate can be better restricted in the central area. The central area of the vaporization plate is the area corresponding to the through hole of the piezoceramic plate. The plurality of vaporization holes is provided in the central area of the vaporization plate for vaporizing an aerosol-forming substrate. In this way, the vibration amplitude of an area on the vaporization plate where the vaporization is performed is increased, thereby improving the vaporization effect. Therefore, the microporous vaporization assembly can prevent adhesive failure and adhesive overflow as well as improve the vaporization effect.

In an embodiment, the fence part is integrated with the body part, so that a gap, that allows a liquid to enter a side of the piezoceramic plate, between the fence part and the body part is avoided, thereby further improving a liquid blocking effect of the fence part.

In an embodiment, the fence part is constructed as an annular protrusion sleeved on the outer circumference of the piezoceramic plate at an interval, so as to reserve a particular gap in the outer circumference of the piezoceramic plate to allow the piezoceramic plate to vibrate in a radial direction thereof after being energized, thereby further driving the vaporization holes in the vaporization plate to deform in the axial direction and press and vaporize the aerosol-forming substrate.

In an embodiment, in a radial direction of the annular protrusion, a gap between the annular protrusion and the piezoceramic plate is in a range from <NUM> to <NUM>.

In an embodiment, a protrusion height of the fence part relative to the body part is less than or equal to a thickness of the piezoceramic plate.

In an embodiment, a ratio of the thickness of the piezoceramic plate to the protrusion height of the fence part relative to the body part is in a range from <NUM>: <NUM> to <NUM>:<NUM>.

In an embodiment, the protrusion height of the fence part relative to the body part is in a range from <NUM> to <NUM>; and/or the thickness of the piezoceramic plate is in a range from <NUM> to <NUM>.

In an embodiment, an outer diameter of the piezoceramic plate is in a range from <NUM> to <NUM>; and/or the thickness of the body part is in a range from <NUM> to <NUM>.

In an embodiment, the microporous vaporization assembly further includes a bonding layer bonded between the body part and the piezoceramic plate.

According to another aspect of the application, an electronic vaporization device is provided, the electronic vaporization device includes the microporous vaporization assembly according to any of the forgoing embodiments.

Reference numerals: <NUM>. microporous vaporization assembly; <NUM>. piezoceramic plate; <NUM>. through hole <NUM>. vaporization plate; <NUM>. tab; <NUM>. body part; <NUM>. convex; <NUM>. fence part; and <NUM>. bonding layer.

To make the foregoing objects, features and advantages of the present application more comprehensible, detailed description is made to specific implementations of the present application below with reference to the accompanying drawings. Many details are elaborated in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described, and similar improvements can be made by technicians in the field without violating the connotation of the present application, so the present application is not limited by specific embodiments disclosed below.

In the description of the present application, it should be understood that, orientation or position relationships indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are orientation or position relationship shown based on the accompanying drawings, and are merely used for describing the present application and simplifying the description, rather than indicating or implying that the mentioned device or element should have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be construed as a limitation to the present application.

In addition, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature restricted by "first" or "second" may explicitly indicate or implicitly include at least one of such features. In the description of the present application, unless otherwise explicitly defined, "a plurality of" means at least two, for example, two, three, and the like. In the present application, unless otherwise explicitly specified and defined, terms such as "mounted", "connected", "coupled", and "fixed" should be understood in a broad sense, which may, for example, refer to a fixed connection, a detachable connection, or an integration; or for example, refer to a mechanical connection or an electrical connection; or for example, refer to a direct connection, or an indirect connection through an intermediate medium; or for example, refer to and internal communication between two elements or a mutual action relationship between two elements, unless otherwise explicitly specified. A person of ordinary skill in the art may understand the specific meanings of the foregoing terms in the present application according to specific situations.

In the present application, unless otherwise explicitly specified and defined, a first feature is "on" or "below" a second feature may mean that the first feature and the second feature are in direct, or the first feature and the second feature are in indirect contact through an intermediate medium. In addition, that the first feature is "above", "over", or "on" the second feature may indicate that the first feature is directly above or obliquely above the second feature, or may merely indicate that the horizontal position of the first feature is higher than that of the second feature. That the first feature is "below", "under", and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or may merely indicate that the horizontal position of the first feature is lower than that of the second feature.

It should be noted that, when an element is referred to as "being fixed to" or "being arranged on" another element, the element may be directly on the another element, or an intermediate element may be present. When an element is considered to be "connected to" another element, the element may be directly connected to the another element, or an intermediate element may also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions used in this specification are only for purposes of illustration but not indicate a unique implementation.

Referring to <FIG>, an embodiment of the present application provides a microporous vaporization assembly <NUM> used for vaporizing an aerosol-forming substrate. The microporous vaporization assembly <NUM> includes a piezoceramic plate <NUM> and a vaporization plate <NUM>. The vaporization plate <NUM> and the piezoceramic plate <NUM> are stacked. A plurality of vaporization holes is provided in the vaporization plate <NUM>. When energized, the the piezoceramic plate <NUM> vibrates and drives the vaporization plate <NUM> to vibrate. The vaporization holes continuously and repeatedly deform or vibrate along with the vibration of the vaporization plate <NUM>, so that a liquid aerosol-forming substrate is pressed and broken into fine droplets to form a vaporized aerosol. Generally, the vaporization holes are micron-sized micropores. In some implementations, an aperture of the vaporization hole may be in a range from <NUM> to <NUM>. Preferably, the aperture of the vaporization hole may be in a range from <NUM> to <NUM>.

Further, the piezoceramic plate <NUM> is provided with a through hole <NUM>. The vaporization plate <NUM> includes a body part <NUM>. The body part <NUM> is stacked with and bonded to the piezoceramic plate <NUM> and covers the through hole <NUM>. A plurality of vaporization holes is provided in an area of the body part <NUM> corresponding to the through hole <NUM>, so that the vaporization holes are communicated with the through hole <NUM>. When the vaporization plate <NUM> vibrates, the aerosol-forming substrate is pressed and vaporized by the vaporization holes in the body part <NUM>, so that vaporized droplets are formed. The vaporized droplets may flow out through the through hole <NUM> in the piezoceramic plate <NUM>.

In some embodiments, the body part <NUM> and the piezoceramic plate <NUM> are bonded by a conductive adhesive. The microporous vaporization assembly <NUM> further includes a positive lead (not shown in the figures) and a negative lead (not shown in the figures). One of the positive lead and the negative lead is fixed and connected to the body part <NUM>, for example, by welding, and the other of the positive lead and the negative lead is fixed and connected to the piezoceramic plate <NUM>, for example, by welding. In this way, the piezoceramic plate <NUM> of the microporous vaporization assembly <NUM> is connected to a circuit by the positive lead and the negative lead, so that the piezoceramic plate <NUM> is energized and vibrates. Optionally, the positive lead or the negative lead is fixed and connected to the body part <NUM> by welding. Optionally, the body part <NUM> is provided with a tab <NUM>, which protrudes from the body part <NUM> in a radial direction, and the positive lead or the negative lead is welded to the tab <NUM>.

Further, generally, a side of the piezoceramic plate <NUM> away from the vaporization plate <NUM> is covered with an electrode layer. The electrode layer is a conductive metal layer, for example, the conductive metal layer includes an alloy containing silver. The electrode layer may be connected to the positive lead or the negative lead, and thus, may be further electrically connected to an external power supply, thereby implementing the electrical communication of the piezoceramic plate <NUM>.

Specifically, the area of the vaporization plate <NUM> provided with the plurality of vaporization holes is configured to protrude in a direction of extending into the through hole <NUM>. That is, a central area of the vaporization plate <NUM> forms a convex <NUM> that bends toward the inside of the through hole <NUM>, and the plurality of vaporization holes is provided in the convex <NUM>. In this way, when driven by the piezoceramic plate <NUM> to vibrate, the vaporization plate <NUM> may guide the aerosol-forming substrate to flow in a direction of passing through the through hole <NUM>. A protruding direction of the convex <NUM> is a flowing direction of the substrate.

The vaporization plate <NUM> further includes the fence part <NUM>. The fence part <NUM> is arranged to protrude from the surface of the body part <NUM> on which the piezoceramic plate <NUM> is stacked, and to surround an outer circumference of the piezoceramic plate <NUM>. Thus, the fence part <NUM> covers a gap between the piezoceramic plate <NUM> and the body part <NUM>, so as to prevent a liquid from permeating between the piezoceramic plate <NUM> and the body part <NUM> from an edge of the piezoceramic plate <NUM> during vaporization, and thus, prevent from corroding an adhesive, thereby ensuring the effective bonding between the piezoceramic plate <NUM> and the vaporization plate <NUM> and further ensuring that the vaporization plate <NUM> can effectively vibrate. In addition, the fence part <NUM> arranged to protrude from the vaporization plate <NUM> improves the rigidity of the vaporization plate <NUM>, so that the vaporization plate <NUM> can be firmly bonded to the piezoceramic plate <NUM>. In this way, the vaporization plate <NUM> is prevented from being bent due to its low rigidity after repeated vibrations, and from being separated from the piezoceramic plate <NUM> due to bending, so that the bonding stability of the vaporization plate <NUM> and the piezoceramic plate <NUM> is further improved.

In addition, the fence part <NUM> is arranged surrounding the outer circumference of the piezoceramic plate <NUM>, so that an adhesive bonded between the piezoceramic plate <NUM> and the vaporization plate <NUM> is prevented from overflowing from an edge of the vaporization plate <NUM> during compression, heating, and curing, thereby preventing the adhesive from overflowing and affecting a bonding process. In addition, the fence part <NUM> is arranged on an outer circumference of the vaporization plate <NUM>, so that the vibration of the vaporization plate <NUM> can be better restricted in the central area. The central area of the vaporization plate <NUM> is the area corresponding to the through hole <NUM> of the piezoceramic plate <NUM>. The plurality of vaporization holes is provided in the central area of the vaporization plate <NUM> for vaporizing the aerosol-forming substrate. In this way, the vibration amplitude of an area on the vaporization plate <NUM> where the vaporization is performed is increased, thereby improving the vaporization effect. Therefore, the microporous vaporization assembly <NUM> can prevent adhesive failure and adhesive overflow as well as improve the vaporization effect.

In some embodiments, the body part <NUM> is integrated with the fence part <NUM> to avoid a gap between the fence part <NUM> and the body part <NUM> that allows a liquid to enter a side of the piezoceramic plate <NUM>, thereby further improving a liquid blocking effect of the fence part <NUM>. Optionally, the vaporization plate <NUM> is made of any one of stainless steel, a titanium alloy, and a palladium nickel alloy. Optionally, blind holes are opened in raw materials through machining, electroforming or etching, so as to manufacture the body part <NUM> and the fence part <NUM> that are integrated.

Referring to <FIG>, in some embodiments, the microporous vaporization assembly <NUM> further includes a bonding layer <NUM>. The bonding layer <NUM> is bonded between the body part <NUM> and the piezoceramic plate <NUM> to bond the vaporization plate <NUM> to the piezoceramic plate <NUM>. Optionally, the bonding layer <NUM> is made of epoxy glue or a solid adhesive film. Specifically, in a bonding process, the bonding layer <NUM> is bonded to a surface of the piezoceramic plate <NUM> through screen printing (including, but not limited to, steps such as dispensing, coating, and the like); and then the piezoceramic plate <NUM> with the bonding layer <NUM> is placed on a portion of the vaporization plate <NUM> surrounded by the fence part <NUM>, so that the bonding layer <NUM> on the piezoceramic plate <NUM> is in contact with the body part <NUM>; finally, the piezoceramic plate <NUM> and the vaporization plate <NUM> are laminated and cured at a high temperature by a tools. A curing temperature and a curing duration are determined according to characteristics of the bonding layer <NUM>. In this way, the stacked and bonded piezoceramic plate <NUM> and the vaporization plate <NUM> are obtained, thereby obtaining the microporous vaporization assembly <NUM>.

In addition, the fence part <NUM> is arranged surrounding the outer circumference of the piezoceramic plate <NUM>, so that the adhesive bonded between the piezoceramic plate <NUM> and the vaporization plate <NUM> can be prevented from overflowing from an edge of the vaporization plate <NUM> during compression, heating, and curing, thereby avoiding that the normal use of the tools is affected due to the bonding of the adhesive with the external tools. Therefore, the microporous vaporization assembly <NUM> according to the embodiment of the present application can prevent adhesive failure and adhesive overflow.

In some embodiments, the fence part <NUM> is constructed as an annular protrusion which matches the shape of the outer circumference of the piezoceramic plate <NUM> to block and protect the piezoceramic plate <NUM> in all directions of the outer circumference of the piezoceramic plate <NUM>, so as to prevent the piezoceramic plate <NUM> from adhesive failure and adhesive overflow in a bonding process. In addition, the vibration of the vaporization plate <NUM> is concentrated to the central area through the annular protrusion, thereby improving the vaporization effect. Specifically, referring to <FIG>is a diagram of vibration modal simulation of an existing microporous vaporization assembly in the related art, and <FIG> is a diagram of vibration modal simulation of the microporous vaporization assembly <NUM>. It can be seen from <FIG> that the vibration of the microporous vaporization assembly <NUM> provided in the present application is concentrated in the central area of the vaporization plate <NUM>.

Referring to <FIG>, <FIG>, further, the annular protrusion is sleeved around the outer circumference of the piezoceramic plate <NUM> at an interval to from a particular gap between the outer circumference of the piezoceramic plate <NUM> and the annular protrusion, the gap allows the piezoceramic plate <NUM> to vibrate in a radial direction thereof after being energized, thereby driving the vaporization holes in the vaporization plate <NUM> to deform in the axial direction and press and vaporize the aerosol-forming substrate.

Optionally, in a radial direction of the annular protrusion, the gap between the annular protrusion and the piezoceramic plate <NUM> is in a range from <NUM> to <NUM>, allowing the piezoceramic plate <NUM> to vibrate in the radial direction thereof.

In some embodiments, a protrusion height of the fence part <NUM> relative to the body part <NUM> is less than or equal to the thickness of the piezoceramic plate <NUM>. That is, the fence part <NUM> is not higher than the piezoceramic plate <NUM>. In this way, the vibration of the vaporization plate <NUM> is prevented from being hindered by the excessive thickness and weight of the fence part <NUM>, thereby maintaining better vibration and vaporization performance of the vaporization plate <NUM>.

Further, a ratio of the thickness of the piezoceramic plate <NUM> to the protrusion height of the fence part <NUM> relative to the body part <NUM> is in a range from <NUM>: <NUM> to <NUM>:<NUM>. That is, in a case where the fence part <NUM> has the minimum protrusion height, the thickness of the piezoceramic plate <NUM> is six times the protrusion height of the fence part <NUM>; and in a case where the fence part <NUM> has the maximum the protrusion height, the thickness of the piezoceramic plate <NUM> is equal to the protrusion height of the fence part <NUM>. That is, the protrusion height of the fence part <NUM> relative to the body part <NUM> is configured to less than or equal to the thickness of the piezoceramic plate <NUM>.

Optionally, the protrusion height of the fence part <NUM> relative to the body part <NUM> is in a range from <NUM> to <NUM>, the thickness of the piezoceramic plate is in a range from <NUM> to <NUM>. According to the thickness of the piezoceramic plate <NUM>, the protrusion height of the fence part <NUM> relative to the body part <NUM> is appropriately selected so that a liquid is prevent from flowing into a gap on a side of the piezoceramic plate <NUM> by the fence part <NUM>, thereby preventing the adhesive from corroding. Further, the fence part <NUM> prevents the adhesive from overflowing from the outer circumference of the vaporization plate <NUM> during the assembly process, thereby avoiding the influence of the overflow of the adhesive on the assembly process. In addition, the vibration amplitude in the central area of the vaporization plate <NUM> can be improved by selecting an appropriate thickness for the fence part, so that the vaporization effect of the vaporization plate <NUM> can be improved. Preferably, the protrusion height of the fence part <NUM> relative to the body part <NUM> is in a range from <NUM> to <NUM>, and the thickness of the piezoceramic plate is in a range from <NUM> to <NUM>, so that the microporous vaporization assembly <NUM> can better prevent adhesive failure and adhesive overflow and have better vibration vaporization performance.

Further, an outer diameter of the piezoceramic plate <NUM> is in a range from <NUM> to <NUM>, and the thickness of the body part <NUM> is in a range from <NUM> to <NUM>. Specifically, the protrusion height of the fence part <NUM> relative to the body part <NUM> is in a range from <NUM> to <NUM>, and the thickness of the piezoceramic plate is in a range from <NUM> to <NUM>. In addition, the outer diameter of the piezoceramic plate <NUM> is in a range from <NUM> to <NUM>, and the thickness of the body part <NUM> is in a range from <NUM> to <NUM>. The size of each component of the microporous vaporization assembly <NUM> is kept in an appropriate range, thereby ensuring that the microporous vaporization assembly <NUM> prevents adhesive failure and adhesive overflow and has vibration vaporization performance. The foregoing microporous vaporization assembly <NUM> includes a piezoceramic plate <NUM> and a vaporization plate <NUM>. The vaporization plate <NUM> is stacked on and bonded to the piezoceramic plate. A fence part <NUM> surrounding an outer circumference of the piezoceramic plate <NUM> is arranged on the vaporization plate <NUM> to prevent a liquid from entering a gap between the vaporization plate <NUM> and the piezoceramic plate <NUM>, and thus, from corroding the adhesive. In addition, the fence part <NUM> prevents adhesive overflow in a process of assembling the piezoceramic plate <NUM> and the vaporization plate <NUM>. In addition, the fence part <NUM> concentrates the vibration of the vaporization plate <NUM> to the central area provided with vaporization holes, thereby improving the vaporization effect.

Based on the same inventive concept, an embodiment of the present application further provides an electronic vaporization device including the foregoing microporous vaporization assembly <NUM>. The microporous vaporization assembly <NUM> further includes a piezoceramic plate <NUM> and a vaporization plate <NUM>. The vaporization plate <NUM> and the piezoceramic plate <NUM> are stacked. The vaporization holes are provided in the vaporization plate <NUM>. When energized, the piezoceramic plate <NUM> vibrates and drives the vaporization plate <NUM> to vibrate. The vaporization holes continuously and repeatedly deform with the vibration of the vaporization plate <NUM>, so that the liquid aerosol-forming substrate is pressed and broken into fine droplets to form a vaporized aerosol.

Further, the piezoceramic plate <NUM> is provided with a through hole <NUM>. The vaporization plate <NUM> includes a body part <NUM>. The body part <NUM> is stacked on and bonded to the piezoceramic plate <NUM> and covers the through hole <NUM>. A plurality of vaporization holes is provided in the area of the body part <NUM> corresponding to the through hole <NUM>, so that the vaporization holes are communicated with the through hole <NUM>. When the vaporization plate <NUM> vibrates, the aerosol-forming substrate is pressed and vaporized by the vaporization holes in the body part <NUM>, so that the vaporized droplets are med. The vaporized droplets may flow out through the through hole <NUM> in the piezoceramic plate <NUM>.

The vaporization plate <NUM> further includes the fence part <NUM>. The fence part <NUM> is arranged to protrude from the surface of the body part <NUM> on which the piezoceramic plate <NUM> is stacked, and to surround an outer circumference of the piezoceramic plate <NUM>. Thus, the fence part <NUM> covers a gap between the piezoceramic plate <NUM> and the body part <NUM>, so as to prevent a liquid from permeating between the piezoceramic plate <NUM> and the body part <NUM> from an edge of the piezoceramic plate <NUM> during vaporization, and thus, from corroding the adhesive, thereby ensuring the effective bonding between the piezoceramic plate <NUM> and the vaporization plate <NUM> and further ensuring that the vaporization plate <NUM> can effectively vibrate. In addition, the fence part <NUM> arranged to protrude from the vaporization plate <NUM> improves the rigidity of the vaporization plate <NUM>, so that the vaporization plate <NUM> can be firmly bonded to the piezoceramic plate <NUM>. In this way, the vaporization plate <NUM> is prevented from being bent due to its low rigidity after repeated vibrations, and from being separated from the piezoceramic plate <NUM> due to bending, so that the bonding stability of the vaporization plate <NUM> and the piezoceramic plate <NUM> is further improved.

In some embodiments, the body part <NUM> is integrated with the fence part <NUM>, to avoid a gap between the fence part <NUM> and the body part <NUM> that allows a liquid to enter a side of the piezoceramic plate <NUM>, thereby further improving a liquid blocking effect of the fence part <NUM>. Optionally, the vaporization plate <NUM> is made of any one of stainless steel, a titanium alloy, and a palladium nickel alloy. Optionally, blind holes are opened in raw materials through machining, electroforming or etching, so as to manufacture the body part <NUM> and the fence part <NUM> that are integrated.

The foregoing microporous vaporization assembly <NUM> includes a piezoceramic plate <NUM> and a vaporization plate <NUM>. The vaporization plate <NUM> is stacked on and bonded to the piezoceramic plate. A fence part <NUM> surrounding an outer circumference of the piezoceramic plate <NUM> is arranged on the vaporization plate <NUM> to prevent a liquid from entering a gap between the vaporization plate <NUM> and the piezoceramic plate <NUM>, and thus, form corroding an adhesive. In addition, the fence part <NUM> prevents adhesive overflow in a process of assembling the piezoceramic plate <NUM> and the vaporization plate <NUM>. In addition, the fence part <NUM> concentrates the vibration of the vaporization plate <NUM> to the central area provided with vaporization holes, thereby improving the vaporization effect.

Claim 1:
A microporous vaporization assembly (<NUM>), comprising
a piezoceramic plate (<NUM>) provided with a through hole (<NUM>); characterized in that the assembly comprises also
a vaporization plate (<NUM>) including a body part (<NUM>) and a fence part (<NUM>), the body part (<NUM>) being stacked on and bonded to the piezoceramic plate (<NUM>) and covering the through hole (<NUM>), a plurality of vaporization holes being provided in an area of the body part (<NUM>) corresponding to the through hole (<NUM>),
wherein the fence part (<NUM>) is arranged to protrude from a surface of the body part (<NUM>) on which the piezoceramic plate (<NUM>) is stacked, and to surround an outer circumference of the piezoceramic plate (<NUM>).