Atomizer, method for making atomizer, and electronic cigarette

Abstract

An atomizer, a method for making an atomizer, and an electronic cigarette. The atomizer comprises a porous ceramic body and a heating body. The porous ceramic body comprises a liquid guide area and an atomization area. Liquid is introduced into the atomization area through the liquid guide area. The heating body is used to heat the porous ceramic body so that the liquid is heated and atomized in the atomization area. An escape hole is formed on the outer surface of the atomizer. Particles formed by liquid atomization escape to the outside through the escape hole. Along the depth direction of the escape hole, the width dimension of the bottom of the escape hole is not greater than the width dimension of the opening, so that the escape hole has a larger opening angle, the number of rebounds of the particles in the escape hole is reduced, the escape impedance is reduced, and the efficient escape of the particles can be achieved, so as to avoid the particles staying in the escape hole and being heated for too long to produce harmful substances.

Description

Technical Field

[0001] The invention belongs to the field of atomizers, and in particular relates to an atomizer, a method for manufacturing an atomizer, and an electronic cigarette. Background Art

[0002] Atomizers can atomize tobacco products by heating without burning them, thus forming smoke for inhalation. At the same time, atomizers can also be used in the medical field, that is, atomizing drugs into particles through atomizers, and patients deposit the particles into the lungs through breathing, thus achieving a painless, rapid and effective treatment method. In addition, it can also be used in purification and humidification, aromatherapy beauty, surface spraying and many other fields.

[0003] At present, the most widely used atomizer is a ceramic heating element. The ceramic heating element generally includes a porous ceramic body and a heating element disposed on the porous ceramic body. However, the existing ceramic heating elements have randomly distributed micropores, which have a large impedance to particles, resulting in the particles not being able to escape effectively. The heating time in the cavity is too long, which can easily destroy the components of the e-liquid or drugs and produce harmful substances. Summary of the invention

[0004] The purpose of the present invention is to provide an atomizer, a method for manufacturing the atomizer and an electronic cigarette, which can reduce the escape impedance of particles, achieve efficient escape, and avoid the generation of harmful substances due to excessive heating time.

[0005] To achieve the purpose of the present invention, the present invention provides the following technical solutions:

[0006] In a first aspect, an embodiment of the present invention provides an atomizer, comprising a porous ceramic body and a heating body, wherein the porous ceramic body comprises a liquid conducting area and an atomizing area, wherein liquid is introduced into the atomizing area through the liquid conducting area, and the heating body is used to heat the porous ceramic body so that the liquid is heated and atomized in the atomizing area; wherein an escape hole is formed on the outer surface of the atomizer, and particles formed by the atomization of the liquid escape from the escape hole to the outside, and along the depth direction of the escape hole, the width dimension of the bottom of the escape hole is not greater than the width dimension of the opening.

[0007] In one embodiment, along the depth direction of the escape hole, the width dimension of the escape hole gradually increases from the bottom to the opening.

[0008] In one embodiment, the heating body covers the surface of the atomization area, and the escape hole is formed on the heating body and connected to the atomization area.

[0009] In one embodiment, the escape hole is formed on the surface of the atomization area, and the heating body covers a portion of the surface of the atomization area.

[0010] In one embodiment, the escape hole is formed in a surface area of ​​the atomization zone that is not covered by the heating body.

[0011] In one embodiment, the shape of the longitudinal section of the escape hole is any one of the following:

[0012] Circle, oval, triangle, rectangle, inverted trapezoid, wave.

[0013] In a second aspect, an embodiment of the present invention provides an electronic cigarette, comprising an atomizer as described in any one of the various embodiments of the first aspect.

[0014] In a third aspect, an embodiment of the present invention provides a method for manufacturing an atomizer, wherein the atomizer comprises a porous ceramic body and a heating body, wherein the porous ceramic body comprises a liquid conducting area and an atomizing area, wherein the liquid is introduced into the atomizing area through the liquid conducting area, and the heating body is used to heat the porous ceramic body so that the liquid is heated and atomized in the atomizing area; the method for manufacturing the atomizer comprises: forming an escape hole on the outer surface of the atomizer, and the particles formed by the atomization of the liquid escape from the escape hole to the outside, and making the width dimension of the bottom of the escape hole not greater than the width dimension of the opening along the depth direction of the escape hole.

[0015] In one embodiment, an escape hole is formed on the outer surface of the atomizer, so that along the depth direction of the escape hole, the width of the escape hole gradually increases from the bottom to the opening.

[0016] In one embodiment, the heating body covers the surface of the atomization area, and the method for manufacturing the atomizer includes: forming the escape hole on the heating body, and making the escape hole connected to the atomization area.

[0017] In one embodiment, the method for manufacturing the atomization area includes: forming the escape hole on the surface of the atomization area; printing the heating body on the surface of the atomization layer, wherein the heating body covers a portion of the surface of the atomization area.

[0018] In one embodiment, the surface area of ​​the atomization zone not covered by the heating body forms the escape hole.

[0019] In one embodiment, forming the escape hole on the outer surface of the atomizer includes: grinding the outer surface of the atomizer so that the sharp corner structure at the opening of the escape hole collapses due to stress concentration.

[0020] In one embodiment, forming an escape hole on the outer surface of the atomizer includes: manufacturing the escape hole through an exposure, development and etching process.

[0021] In one embodiment, an escape hole is formed on the outer surface of the atomizer, comprising: providing a stamping piece, the stamping piece comprising a plurality of microneedles; using the stamping piece to stamp the atomizer, wherein the plurality of microneedles are embedded in the atomizer to form the escape hole.

[0022] In one embodiment, an escape hole is formed on the outer surface of the atomizer, comprising: providing a mold, the mold comprising a mold cavity and a plurality of protrusions protruding from the inner wall of the mold cavity; filling the mold cavity with material to make the atomizer, and the atomizer is defined by the protrusions to form the escape hole.

[0023] By forming an escape hole on the outer surface of the atomizer and making the width of the bottom of the escape hole no greater than the width of the opening along the depth direction of the escape hole, the escape hole has a larger opening angle, the number of rebounds of particles in the escape hole is reduced, the escape impedance is reduced, and the efficient escape of particles can be achieved, avoiding the particles staying in the escape hole for too long and being heated to produce harmful substances. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 is a schematic structural diagram of an atomizer according to an embodiment;

[0026] Figure 2 is a schematic cross-sectional structure diagram of an atomizer according to an embodiment;

[0027] Figure 3 is a schematic cross-sectional structure diagram of an atomizer according to an embodiment;

[0028] Figure 4 is a schematic cross-sectional structure diagram of an atomizer according to an embodiment;

[0029] Figure 5 is a schematic diagram of a method for manufacturing an atomizer according to an embodiment;

[0030] Figure 6 yes Figure 5 Schematic diagram of the escape hole in;

[0031] Figure 7 is a schematic diagram of a method for manufacturing an atomizer according to an embodiment;

[0032] Figure 8a is a schematic cross-sectional structure diagram of an atomizer according to an embodiment;

[0033] Figure 8b is a schematic cross-sectional structure diagram of an atomizer according to an embodiment;

[0034] Fig. 9 is a schematic diagram of a method for manufacturing an atomizer according to an embodiment;

[0035] Fig.10 The present invention is a schematic diagram of a method for manufacturing an atomizer according to an embodiment.

[0036] Description of reference numerals:

[0037] 10 - porous ceramic body, 11 - liquid conducting area, 12 - atomization area, 13 - sharp corner structure;

[0038] 20 - heating element;

[0039] 30 - circuit pin;

[0040] 40 - photoresist, 41 - sacrificial structure, 42 - hollow space, 45 - resistor structure;

[0041] 50 - escape hole;

[0042] 60 - stamped part, 61 - microneedle;

[0043] 70 - auxiliary part, 71 - projection;

[0044] 80 - mold cavity. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Please refer to Figure 1, an embodiment of the present invention provides an atomizer, including a porous ceramic body 10, a heating body 20 and a circuit pin 30. The porous ceramic body 10 has a plurality of micropores (not shown in the figure), and the micropores are used for liquid flow. Of course, the micropores can also be used for gas or gaseous particles to flow. The heating body 20 is used to heat the porous ceramic body 10 to atomize the liquid. The circuit pin 30 is connected to the heating body 20 and is used to connect to a power source such as a rechargeable battery so that the heating body 20 is powered on and heated. This embodiment does not limit the specific position of the heating body 20 relative to the porous ceramic body 10, nor does it limit the specific position of the circuit pin 30 relative to the porous ceramic body 10. Among them, the principle of liquid atomization is to utilize the Leidenfoster effect. When the liquid is at the Leidenfoster temperature, the liquid vaporizes to form particles, and a thin film is formed on the inner wall of the micropore or escape hole 50, and the particles bounce at high frequency in the micropore or escape hole 50 and are atomized.

[0047] Optionally, the liquid may be tobacco oil, liquid medicine, fragrance, etc., and the particles formed after atomization may be aerosol or aerogel.

[0048] Optionally, the heating body 20 is not limited to a heating wire (such as a resistance wire) or a heating surface.

[0049] Please refer to Figure 2 The porous ceramic body 10 includes a liquid conducting area 11 and an atomizing area 12. Optionally, the liquid conducting area 11 can extend into the liquid storage cavity and be immersed in the liquid; optionally, the liquid can also be transported to the liquid conducting area 11 through structures such as oil-absorbing cotton. There are multiple micropores in the liquid conducting area 11 and the atomizing area 12. The liquid is introduced into the atomizing area 12 through the liquid conducting area 11, and the liquid is heated and atomized in the atomizing area 12. When the porous ceramic body 10 is heated, the liquid in the low temperature area (i.e., the liquid conducting area 11) will not be atomized but in liquid state, while the liquid in the high temperature area (i.e., the atomizing area 12) will be atomized into a plurality of particles, which appear as a gaseous mist in macroscopic form.

[0050] Please refer to Figures 2 to 6 An escape hole 50 is formed on the outer surface of the atomizer, and the particles formed by liquid atomization escape to the outside from the escape hole 50. Along the depth direction of the escape hole 50, the width of the bottom of the escape hole 50 is not greater than the width of the opening.

[0051] Optionally, the escape hole 50 is a micropore, that is, a micropore opened on the outer surface of the atomizer is the escape hole 50; optionally, the escape hole 50 may also be other types of holes, which may not be manufactured and formed in the same process as the micropore, and may have a different structure.

[0052] According to the different shapes of the escape hole 50 , its width dimension can be expressed as the width of the two opposite side walls, the inner diameter of the inner wall, etc.

[0053] For details, please refer to Figure 5 and Figure 6 , Figure 5 The opening angles of various escape holes 50 are shown. Figure 6 2 shows the M and N paths of two particles when they are injected into the escape hole 50. Taking the escape hole 50 formed on the outer surface of the porous ceramic body 10 as an example, the particles are transferred to the escape hole 50 in the micropores of the porous ceramic body 10. Due to the high temperature of heating, the particles still have considerable thermal energy and can move at high speed. The bottom width of the escape hole 50 is set to be no larger than the width of the opening, so that the probability of the particles being blocked by the side wall of the escape hole 50 when escaping outward can be reduced.

[0054] like Figure 5 As shown, when the escape hole 50 is not processed in any way, the escape hole 50 includes a hole A with a semicircular longitudinal section, a hole B with a minor arc longitudinal section, and a hole C with a major arc longitudinal section, and the corresponding opening angles are α, β, and γ. After the escape hole 50 is processed, the escape hole 50 includes a hole A' with a semicircular longitudinal section, a hole B' with a minor arc longitudinal section, and a hole C' with a major arc longitudinal section, and the corresponding opening angles are α', β', and γ'. Before the escape hole 50 is processed, the bottom width dimensions of the holes A and B are smaller than the width dimension of the opening, and the bottom width dimension of the hole C is larger than the width dimension of the opening; after the escape hole 50 is processed, the opening angles α, β, α', and β' are all larger, while γ is smaller and γ' is larger.

[0055] like Figure 6 As shown, when the bottom width dimension of the escape hole 50 is not greater than the width dimension of the opening, that is, when the bottom width dimension of the escape hole 50 is greater than the width dimension of the opening, the particles are shot into the escape hole 50 from the bottom along the M path, rebounded on the inner wall of the escape hole 50, blocked by the sharp corner structure 13 at the opening of the escape hole 50, and return to the inner wall of the escape hole 50 to rebound again, and must go through multiple rebounds before escaping from the opening of the escape hole 50. When the particles are shot into the escape hole 50 along the N path, they will also be blocked by the sharp corner structure 13 at the opening of the escape hole 50 and change the escape angle. When the number of particles is large, each particle will collide with each other. In addition, the width dimension of the opening of the escape hole 50 is smaller than the width dimension of the bottom. On the one hand, the sharp corner structure 13 at the opening of the escape hole 50 will block the movement of some particles. On the other hand, the mutual collision of several particles whose escape angles are changed by the sharp corner structure 13 will cause congestion at the opening of the escape hole 50, thereby increasing the overall escape impedance of the particles.

[0056] like Figure 6 As shown, after the bottom width dimension of the escape hole 50 is set to be no greater than the width dimension of the opening, the particles are shot into the escape hole 50 at the same angle. When the particles bounce off the inner wall of the escape hole 50, there is no obstruction by the sharp-angle structure 13, so the particles can escape with a reduced number of bounces. At the same time, the collision between particles can also be reduced, and the escape impedance at the opening of the escape hole 50 is reduced.

[0057] Therefore, the present invention forms an escape hole 50 on the outer surface of the atomizer, and makes the width of the bottom of the escape hole 50 not greater than the width of the opening along the depth direction of the escape hole 50, so that the escape hole 50 has a larger opening angle, the number of rebounds of particles in the escape hole 50 is reduced, the escape impedance is reduced, and the efficient escape of particles can be achieved, which prevents the particles from staying in the escape hole 50 for too long and being heated to produce harmful substances.

[0058] According to different shapes of the escape hole 50, there are many options for the width of the escape hole 50 along the depth direction of the escape hole 50. Specifically, Figures 2 to 4 As shown, when the longitudinal section of the escape hole 50 is in a semicircular shape, the width of the escape hole 50 gradually increases from the bottom to the opening; Figure 5 The longitudinal section of the middle hole A and hole A' is semicircular, and its width gradually increases from the bottom to the opening. The longitudinal section of the hole B and hole B' is a minor arc, and its width gradually increases from the bottom to the opening. The longitudinal section of the hole C' is a combination of a semicircle and a rectangle, and its width gradually increases from the bottom to the outside, and reaches the maximum value at the connection of the rectangle, and then maintains the width to the opening. Please refer to Figure 7 , Fig. 9 and Fig.10 The longitudinal section of the escape hole 50 is in the shape of an inverted trapezoid, and its width gradually increases from the bottom to the opening. Figure 8a The longitudinal cross-section of the escape hole 50 is triangular, and its width gradually increases from the bottom to the opening. Figure 8b The shape of the longitudinal section of the escape hole 50 is a waveform, which can be a regular sine wave or an arbitrary wave shape, and its width gradually increases from the bottom to the opening.

[0059] In summary, the shape of the longitudinal section of the escape hole 50 may be any feasible shape including but not limited to a circle, an ellipse, a triangle, an inverted trapezoid, a waveform, etc. In the depth direction of the escape hole 50, its width dimension generally increases gradually from the bottom to the opening. In this way, the opening angle of the escape hole 50 can be made larger, avoiding the inner wall of the escape hole 50 from causing additional obstruction to the escape of particles.

[0060] Optionally, the longitudinal section of the escape hole 50 may be rectangular, and its width is the same from the bottom to the opening along the depth direction of the escape hole 50. In this way, the opening of the escape hole 50 can be made larger, and the inner wall of the escape hole 50 can be prevented from causing additional obstruction to the escape of particles.

[0061] In one embodiment, please refer to Figure 2 and Figure 3The escape hole 50 is formed on the surface of the atomization area 12 , and the heating body 20 covers a portion of the surface of the atomization area 12 .

[0062] Optional, please refer to Figure 3 The escape hole 50 is formed on the surface of the atomization area 12, the heating body 20 is closely attached to the surface of the atomization area 12 facing away from the liquid guide area 11 and the inner wall of the escape hole 50, and the heating body 20 has micro gaps to allow the atomized particles to pass through.

[0063] In this embodiment, the heating body 20 can be a very thin film layer, which covers part of the surface of the atomization area 12 as a whole. The thickness of the heating body 20 at each position is roughly the same. The heating body 20 covers the surface of the atomization area 12 facing away from the liquid guide area 11. At the position of the escape hole 50, the heating body 20 also extends to the inside of the escape hole 50 and is close to the inner wall of the escape hole 50. The heating body 20 has a micro-gap, and the slit width of the micro-gap can be nanometer or micron level. The particles entering the escape hole 50 from the micropores of the atomization area 12 can escape through the micro-gap. From the outside, this embodiment is also a structure in which the escape hole 50 is formed on the outer surface of the atomizer.

[0064] Optionally, the escape hole 50 is formed on the surface of the atomization area 12 that is not covered by the heating body 20. This can avoid the heating body 20 from blocking the escape hole 50.

[0065] In one embodiment, please refer to Figure 4 The heating body 20 covers the surface of the atomization area 12 , and the escape hole 50 is formed on the heating body 20 and connected to the atomization area 12 .

[0066] In other words, the heating body 20 can be a very thin film layer, which covers the surface of the atomizing area 12 as a whole, and the outer surface of the atomizer is the surface of the heating body 20 facing away from the atomizing area 12. The escape hole 50 formed on the heating body 20 is connected with the micropores of the atomizing area 12, so that the particles atomized in the atomizing area 12 can enter the heating body 20 and escape to the outside through the escape hole 50 on the heating body 20.

[0067] Figure 3 and Figure 4 The manufacturing process of the heating body 20 covering the surface of the atomization area 12 in the illustrated embodiment can be to print electronic paste on a ceramic green body, bake at a high temperature to simultaneously form the porous ceramic body 10 and the heating body 20, or to first manufacture the porous ceramic body 10, and then manufacture the heating body 20 by processes such as pasting, plating, etc. Of course, other processes such as coating, spraying, etc. can also be used.

[0068] In one embodiment, please refer to Figure 1 and Figure 2 The heating bodies 20 are distributed in a plurality of strips at intervals on the surface of the atomization area 12 , and the escape holes 50 are formed on the surface of the atomization area 12 at intervals between the plurality of heating bodies 20 .

[0069] In this embodiment, the outer surface of the atomizer includes the surface of the heating body 20 facing away from the atomizing area 12 and the surface of the atomizing area 12 facing away from the liquid guide area 11. The escape hole 50 is formed on the surface of the atomizing area 12, and the atomizing function can also be realized. The escape hole 50 can be formed on the entire surface of the atomizing area 12, or only on the surface of the atomizing area 12 at intervals between multiple heating bodies 20.

[0070] In another embodiment, reference may be made to Figure 2 The heating body 20 is distributed in a mesh shape on the surface of the atomization area 12 , and the escape holes 50 are formed on the surface of the atomization area 12 at the mesh holes of the heating body 20 .

[0071] In another embodiment, reference may be made to Figure 2 The heating body 20 may be arranged on the surface of the atomization area 12 in an “S” shape.

[0072] In one embodiment, please refer to Figure 4 When the outer surface of the atomizer is only partially covered with the heating body 20, that is, the heating body 20 can be in the shape of a plurality of spaced strips, or in the shape of a mesh, or in the shape of an "S", in addition to the escape holes 50 formed on the surface of the atomization area 12 exposed to the outside, the escape holes 50 can also be formed on the heating body 20, and the escape holes 50 are connected to the micropores of the atomization area 12.

[0073] That is to say, the entire outer surface of the atomizer is formed with escape holes 50, so that the distribution area of ​​the escape holes 50 is large enough, which can increase the escape amount of particles and improve the atomization efficiency.

[0074] The embodiment of the present invention also provides an electronic cigarette, including the atomizer in any of the above embodiments. The electronic cigarette in the embodiment of the present invention forms an escape hole 50 on the outer surface of the atomizer, and makes the width of the bottom of the escape hole 50 not greater than the width of the opening along the depth direction of the escape hole 50, so that the escape hole 50 has a larger opening angle, the number of rebounds of particles in the escape hole 50 is reduced, the escape impedance is reduced, and the efficient escape of particles can be achieved, and the particles are prevented from staying in the escape hole 50 for too long and being heated to produce harmful substances.

[0075] The embodiment of the present invention also provides a method for manufacturing an atomizer. The structure of the atomizer can be referred to the above description and will not be repeated here. The core of the method for manufacturing the atomizer is to form an escape hole 50 on the outer surface of the atomizer, and the width of the bottom of the escape hole 50 along the depth direction of the escape hole 50 is not greater than the width of the opening.

[0076] By forming an escape hole 50 on the outer surface of the atomizer and ensuring that the width of the bottom of the escape hole 50 is not greater than the width of the opening along the depth direction of the escape hole 50, the escape hole 50 has a larger opening angle, and the number of rebounds of particles in the escape hole 50 is reduced, thereby reducing the escape impedance, enabling efficient escape of particles, and preventing particles from staying in the escape hole 50 for too long and being heated to produce harmful substances.

[0077] In one embodiment, please refer to Figure 5 , forming an escape hole 50 on the outer surface of the atomizer, including:

[0078] The outer surface of the atomizer is ground so that the sharp corner structure 13 at the opening of the escape hole 50 collapses due to stress concentration.

[0079] In this embodiment, when the escape hole 50 is formed on the atomization area 12 of the porous ceramic body 10, the escape hole 50 is a micropore with an opening in the porous ceramic body 10 that is connected to the outside world, so there is no need to add a step of making the escape hole 50. In this embodiment, since the micropores are randomly distributed in the porous ceramic body 10, the positions of the escape holes 50 formed are also random, which may occur. Figure 5 The escape hole 50 is shaped like the middle hole A, the hole B and the hole C. The ceramic material has poor ductility and strong brittleness, and part of the structure can be removed by grinding. Specifically, when the escape hole 50 is Figure 5 When the hole C is formed, the inner wall of the escape hole 50 is provided with a sharp angle structure 13, so that the opening angle γ of the escape hole 50 hole C is small. The sharp angle structure 13 can be collapsed due to stress concentration by grinding, forming Figure 5 The shape of the middle hole C' significantly increases the width of the escape hole 50 at its opening, and the opening angle γ' of the obtained hole C' is significantly increased. Figure 6 It can be seen that by grinding to collapse the sharp-angle structure 13 at the opening of the escape hole 50 , the opening angle of the escape hole 50 can be increased, the escape impedance of the particles can be reduced, and the atomization efficiency can be improved.

[0080] in addition, Figure 5 After grinding, the holes A and B in the mold can also increase the width of the openings of the holes A and B, so that the corresponding opening angles α' and β' are also increased.

[0081] That is, after grinding, the opening angle α' of hole A' is greater than the opening angle α of hole A, the opening angle β' of hole B' is greater than the opening angle β of hole B, and the opening angle γ' of hole C' is greater than the opening angle γ of hole C. In short, through grinding, the opening angle of the escape hole 50 formed on the atomization area 12 can be increased, thereby reducing the escape impedance of the particles.

[0082] In one embodiment, please refer to Figure 7 , forming an escape hole 50 on the outer surface of the atomizer, including:

[0083] The escape hole 50 is formed by an exposure, development and etching process.

[0084] In this embodiment, when the escape hole 50 is formed on the surface of the heater 20, since the heater 20 is made of metal and has good ductility, it is difficult to change its structure by grinding. The escape hole 50 can be made by exposure, development and etching processes.

[0085] Specifically, a layer of photoresist 30 can be coated on the outer surface of the porous ceramic body 10, wherein the photoresist 30 is a negative material, and the photoresist 30 layer can be exposed and developed through a mask, so that the exposed photoresist 30 is retained to form a sacrificial structure 41, and the unexposed photoresist 30 is removed to form a hollow space 42. Then, the atomizer is placed in an electroforming liquid for electroforming, so that the hollow space 42 is filled with a metal material to form a resistor structure 45, and the resistor structure 45 is the heating body 20; and then the sacrificial structure 41 is removed by an etching process, and the escape hole 50 is formed after the sacrificial structure 41 is removed.

[0086] Optionally, when the heating body 20 is thinner, the escape hole 50 may penetrate the heating body 20 , that is, the escape hole 50 is connected to the outer surface of the porous ceramic body 10 and connected to the micropores of the porous ceramic body 10 . This arrangement does not require the micropores to be made inside the heating body 20 .

[0087] Optionally, when the heater 20 is thicker, the escape hole 50 may not penetrate the heater 20 , but a plurality of micropores may be formed in the heater 20 by laser etching or other processes, and the plurality of micropores in the heater 20 are connected to the plurality of micropores of the porous ceramic body 10 .

[0088] During exposure and development, the light-transmitting pattern or transparency of the mask can be set as required to form hollow spaces 42 of different shapes, and further to form escape holes 50 of different shapes. Figure 7 , Figure 8a and Figure 8b Three different shapes of escape holes 50 are shown.

[0089] In one embodiment, please refer to Fig. 9 , forming an escape hole 50 on the outer surface of the atomizer, including:

[0090] A stamping member 60 is provided, wherein the stamping member 60 includes a plurality of microneedles 61;

[0091] The atomizer is stamped using a stamping member 60 , and a plurality of microneedles 61 are embedded in the atomizer to form an escape hole 50 .

[0092] In this embodiment, the shape of the microneedle 61 can be set as needed to obtain the desired shape of the escape hole 50. In this embodiment, the stamping piece 60 can stamp the porous ceramic body 10 or the heating body 20. The specific steps may include: contacting multiple microneedles 61 with the atomizer; applying pressure to the stamping piece 60 so that multiple positions are embedded in the atomizer; after obtaining the desired escape hole 50, the stamping piece 60 is pulled out of the atomizer.

[0093] In this embodiment, the escape hole 50 is manufactured by stamping. The shape of the escape hole 50 is highly controllable and can ensure the atomization efficiency of the atomizer. The stamping method is simple and easy to operate.

[0094] In one embodiment, please refer to Fig.10 , forming an escape hole 50 on the outer surface of the atomizer, including:

[0095] A mold is provided, the mold comprising a mold cavity 80 and a plurality of protrusions 71 protruding from the inner wall of the mold cavity 80;

[0096] The mold cavity 80 is filled with material to make an atomizer, and the atomizer is defined by the protrusion 71 to form an escape hole 50 .

[0097] In this embodiment, the shape of the protrusion 71 can be set as required to obtain the desired shape of the escape hole 50. The porous ceramic body 10 and / or the heating body 20 can be made by making an atomizer in the mold cavity 80. Fig. 9 The auxiliary member 70 has a similar structure to the stamping member 60 shown in the figure, and the protrusion 71 is formed on the auxiliary member 70. The specific steps may include: installing the auxiliary member 70 and the mold, wherein the protrusion 71 of the auxiliary member 70 protrudes from the inner wall of the mold cavity 80; filling the mold cavity 80 with material (the material of the material depends on whether the porous ceramic body 10 and / or the heating body 20 is manufactured), when the material fills the space of the mold cavity 80, due to the limitation of the multiple protrusions 71, the material surrounds the multiple protrusions 71, that is, the multiple protrusions 71 define the shape of the escape hole 50; after the material in the mold cavity 80 is solidified and formed, the auxiliary member 70 and the mold are removed to obtain the desired atomizer.

[0098] This embodiment adopts a mold to make the escape hole. The shape of the escape hole is highly controllable and can ensure the atomization efficiency of the atomizer. The mold has a simple structure, a simple process, and is easy to operate.

[0099] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. An atomizer, characterized in that: It comprises a porous ceramic body and a heating body, wherein the porous ceramic body comprises a liquid guide area and an atomization area, and the heating body is used to heat the porous ceramic body; The outer surface of the atomization area is formed with an escape hole, and the particles formed by the atomization of the liquid escape to the outside from the escape hole. Along the depth direction of the escape hole, the width of the bottom of the escape hole is not greater than the width of the opening; Wherein, the liquid guiding area and the atomizing area both have a plurality of micropores, and the liquid is introduced into the micropores of the atomizing area through the micropores of the liquid guiding area; When the porous ceramic body is heated by the heating body, the liquid in the liquid-conducting area does not atomize but remains in liquid form, and the liquid in the atomizing area is atomized into a plurality of particles; The atomized particles in the micropores of the atomization zone move at high speed and are ejected into the escape hole; The escape holes are micropores with openings in the porous ceramic body that are connected to the outside world. The outer surface of the atomization zone is ground so that the sharp corner structures at the openings of the micropores collapse due to stress concentration to form the escape holes.

2. The atomizer according to claim 1, wherein Along the depth direction of the escape hole, the width of the escape hole gradually increases from the bottom to the opening.

3. The atomizer according to claim 1, wherein The heating body covers a portion of the surface of the atomization area.

4. The atomizer according to claim 3, wherein The escape hole is formed in a surface area of ​​the atomization zone that is not covered by the heating body.

5. The atomizer according to any one of claims 1 to 4, characterized in that The shape of the longitudinal section of the escape hole is any one of the following: Circle, oval, triangle, rectangle, inverted trapezoid, wave.

6. An electronic cigarette, characterized in that: The atomizer comprises the atomizer according to any one of claims 1 to 5.

7. A method for manufacturing an atomizer, characterized in that: The atomizer includes a porous ceramic body and a heating body, the porous ceramic body includes a liquid guide area and an atomization area, and the heating body is used to heat the porous ceramic body; The manufacturing method of the atomizer comprises: An escape hole is formed on the outer surface of the atomization area, and the particles formed by the atomization of the liquid escape to the outside through the escape hole, and the width of the bottom of the escape hole along the depth direction of the escape hole is not greater than the width of the opening; Wherein, the liquid guiding area and the atomizing area both have a plurality of micropores, and the liquid is introduced into the micropores of the atomizing area through the micropores of the liquid guiding area; When the porous ceramic body is heated by the heating body, the liquid in the liquid-conducting area does not atomize but remains in liquid form, and the liquid in the atomizing area is atomized into a plurality of particles; The atomized particles in the micropores of the atomization zone move at high speed and are ejected into the escape hole; An escape hole is formed on the outer surface of the atomization zone, comprising: The outer surface of the atomization zone is ground so that the sharp corner structure at the opening of the micropore collapses due to stress concentration to form the escape hole.

8. The method for manufacturing an atomizer according to claim 7, wherein: An escape hole is formed on the outer surface of the atomizer, so that along the depth direction of the escape hole, the width of the escape hole gradually increases from the bottom to the opening.

9. The method for manufacturing an atomizer according to claim 7, wherein: The manufacturing method of the atomizer comprises: The heating body is printed on the surface of the atomization area, and the heating body covers a portion of the surface of the atomization area.

10. The method for manufacturing an atomizer according to claim 9, wherein: The surface area of ​​the atomization zone that is not covered by the heating body forms the escape hole.

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