Electronic atomization device and atomization assembly for electronic atomization device

Abstract

The invention provides an electronic atomization device and an atomization assembly for the electronic atomization device. The electronic atomization device comprises a liquid storage cavity used for storing a liquid matrix; the porous body comprises a first side in fluid communication with the liquid storage cavity and a second side deviating from the first side; a plurality of liquid guide holes penetrating from the first side to the second side are formed in the porous body and are used for transferring the liquid matrix from the first side to the second side; the surface of the second side of the porous body is at least partially a rough surface; the heating element is combined with the rough surface of the second side of the porous body and is used for heating the liquid substrate to generate aerosol; the ratio of the thickness of the heating element to the surface roughness of the rough surface is larger than or equal to 2. According to the electronic atomization device, the heating element is formed or combined on the rough surface, with the surface roughness, of the second side of the porous body, so that the binding force between the heating element and the surface of the porous body is favorably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic atomization, and in particular to an electronic atomization device and an atomization assembly for the electronic atomization device. BACKGROUND

[0002] Tobacco products, such as cigarettes, cigars, and the like, burn tobacco during use to produce tobacco smoke. Attempts have been made to provide alternatives to these burning tobacco products by creating products that release compounds without burning.

[0003] Examples of such products are heat-not-burn devices that release compounds by heating, rather than burning, a material. For example, the material can be tobacco or other non-tobacco products, which can or can not contain nicotine. As another example, there are aerosol provision devices, such as so-called electronic atomization devices, which typically contain a liquid and produce an inhalable aerosol by heating the liquid with a heating element. In known electronic atomization devices, the heating element is arranged on a porous glass having through holes formed by laser drilling or mechanical drilling, etc. on a dense glass to form through holes in a predetermined direction, the through holes being used to transfer the liquid to the heating element for heating and atomization; the heating element is formed by deposition or printing, etc. and combined on the surface of the porous glass in known electronic atomization devices. SUMMARY

[0004] One embodiment of the present application provides an electronic atomization device, comprising:

[0005] a liquid storage cavity for storing a liquid substrate;

[0006] a porous body having a first side in fluid communication with the liquid storage cavity and a second side facing away from the first side; the porous body has a plurality of liquid guide holes penetrating from the first side to the second side for transferring the liquid substrate from the first side to the second side; the surface of the second side of the porous body is at least partially a rough surface;

[0007] a heating element combined with the rough surface of the second side of the porous body for heating the liquid substrate to generate an aerosol; the ratio of the thickness of the heating element to the surface roughness of the rough surface is greater than or equal to 2.

[0008] In some embodiments, the heating element is configured to be a coating or plating layer formed on the rough surface by deposition or spraying or printing.

[0009] In some embodiments, the surface roughness of the rough surface is between 3 and 320 nm.

[0010] In some embodiments, the ratio of the thickness of the heating element to the surface roughness of the rough surface is between 10 and 200.

[0011] In some embodiments, the surface roughness of the rough surface is greater than or equal to 20 nm.

[0012] In some embodiments, the thickness of the heating element is less than or equal to 2.5 pm.

[0013] In some embodiments, the heating element comprises a first coating or plating and a second coating or plating formed in sequence; the first coating or plating is located between the porous body and the second coating or plating.

[0014] In some embodiments, the coefficient of thermal expansion of the material of the first coating or plating is less than the coefficient of thermal expansion of the material of the coating or plating.

[0015] In some embodiments, the first coating or plating is made of or formed from chromium, titanium or alloys thereof;

[0016] Alternatively, the second coating or plating is made of or formed from stainless steel; or the second coating or plating is made of or formed from gold, platinum or alloys thereof.

[0017] In some embodiments, the thickness of the first coating or plating is between 200 nm and 2 pm.

[0018] In some embodiments, the rough surface is formed by at least one or more surface roughening treatments of at least part of the surface of the second side of the porous body, such as laser etching, chemical etching, sandblasting or mechanical polishing.

[0019] In some embodiments, at least part of the outer side edges of the porous body are uneven;

[0020] And / or, at least part of the outer side edges of the porous body are in the shape of a sawtooth.

[0021] In some embodiments, the outer side edges of the porous body are provided with protrusions arranged at intervals;

[0022] The ventilation channel is at least partially defined by the gaps between adjacent protrusions to provide a path for air to pass from the second side across the porous body into the liquid storage cavity.

[0023] In some embodiments, the porous body comprises:

[0024] A porous liquid conducting portion for delivering a liquid substrate; the liquid conducting holes are arranged in the porous liquid conducting portion;

[0025] a dense portion surrounding the porous liquid conducting portion; the electronic atomization device provides support or retention to the porous body through the dense portion.

[0026] In some embodiments, further comprising:

[0027] a holder for accommodating or retaining the porous body;

[0028] a flexible sealing element between the holder and the dense portion for providing a seal therebetween.

[0029] In some embodiments, the porous body is configured to be substantially a sheet shape;

[0030] and / or, the first side and the second side are opposite along a thickness direction of the porous body.

[0031] In some embodiments, the porous body comprises a third side and a fourth side opposite along a width direction;

[0032] the heating element is configured to be a square or rectangular shape extending along a length direction of the porous body; the heating element is spaced apart from the third side with a first spacing therebetween; and / or, the heating element is spaced apart from the fourth side with a second spacing therebetween.

[0033] In some embodiments, a portion of the liquid conducting holes is within the first spacing and / or the second spacing.

[0034] Yet another embodiment of the present application further provides an electronic atomization device, comprising:

[0035] a liquid storage cavity for storing a liquid substrate;

[0036] a porous body comprising a first side and a second side opposite along a thickness direction, and a third side and a fourth side opposite along a width direction; the first side is in fluid communication with the liquid storage cavity; the porous body has a plurality of liquid conducting holes therethrough from the first side to the second side for transferring the liquid substrate from the first side to the second side;

[0037] a heating element coupled to a surface of the second side of the porous body and for heating the liquid substrate to generate an aerosol; the heating element is a rectangular or square shape extending along a length direction of the porous body; the heating element is spaced apart from the third side with a first spacing therebetween; and / or, the heating element is spaced apart from the fourth side with a second spacing therebetween;

[0038] a portion of the liquid conducting holes is opposite to the heating element, and a portion of the liquid conducting holes is within the first spacing and / or the second spacing.

[0039] Yet another embodiment of the present application also provides an atomization assembly for an electronic atomization device, comprising:

[0040] a porous body comprising a first side and a second side opposite to each other, and a plurality of liquid guiding holes penetrating from the first side to the second side; a surface of the second side of the porous body is at least partially a rough surface;

[0041] a heating element coupled to the rough surface of the second side of the porous body; a ratio of a thickness of the heating element to a surface roughness of the rough surface is greater than or equal to 2.

[0042] Yet another embodiment of the present application also provides an atomization assembly for an electronic atomization device, comprising:

[0043] a porous body comprising a first side and a second side opposite to each other along a thickness direction, and a third side and a fourth side opposite to each other along a width direction;

[0044] a heating element coupled to a surface of the second side of the porous body and configured to be arranged in a rectangular or square shape along a length direction of the porous body; the heating element is spaced apart from the third side with a first spacing therebetween; and / or, the heating element is spaced apart from the fourth side with a second spacing therebetween;

[0045] the porous body has a plurality of liquid guiding holes penetrating from the first side to the second side; a portion of the liquid guiding holes is opposite to the heating element, and a portion of the liquid guiding holes is within the first spacing and / or the second spacing.

[0046] An embodiment of the present application provides an electronic atomization device, comprising:

[0047] a liquid storage cavity for storing a liquid substrate;

[0048] a porous body comprising a first side in fluid communication with the liquid storage cavity and a second side opposite to the first side; the porous body has a plurality of liquid guiding holes penetrating from the first side to the second side for transferring the liquid substrate from the first side to the second side;

[0049] a heating element coupled to the second side of the porous body for heating the liquid substrate to generate an aerosol;

[0050] a ratio of a shortest distance between adjacent liquid guiding holes to a diameter or width dimension of the liquid guiding holes is less than 1.0.

[0051] For the liquid guide holes that are approximately circular, the shortest distance between adjacent liquid guide holes can be understood as the distance between them in the direction of a virtual straight line passing through the centers of the two adjacent liquid guide holes. For the liquid guide holes that are not circular, such as triangular, quadrilateral, pentagonal, etc., the shortest distance between adjacent liquid guide holes can be understood as the interval distance in the direction of a virtual straight line passing through the geometric centers of the two adjacent liquid guide holes.

[0052] For the liquid guide holes that are approximately circular, the diameter of a liquid guide hole can be characterized as the distance between the center in the radial direction of a liquid guide hole and two points on the edge. Since the shape of the liquid guide holes can be distorted or deformed during preparation, they are not very standard circular shapes, such as ellipses or approximately circular shapes, etc. Thus, for the liquid guide holes that are not standard circular, the diameter of a liquid guide hole can be characterized as the maximum width of the liquid guide hole in the radial direction. For liquid guide holes of more shapes such as triangular, quadrilateral, pentagonal, etc., the diameter of a liquid guide hole can be characterized as the diameter of its circumscribed circle, i.e., twice the distance from the geometric center of the liquid guide hole to one of the vertices.

[0053] In some embodiments, the ratio of the shortest distance between adjacent liquid guide holes to the diameter or width dimension of the liquid guide holes is between 0.1 and 0.8.

[0054] In some embodiments, the shortest distance between adjacent liquid guide holes is between 5 and 35 μm.

[0055] In some embodiments, the diameter or width dimension of the liquid guide holes is between 10 and 120 μm.

[0056] In some embodiments, at least part of the outer side edge of the porous body is uneven;

[0057] And / or, at least part of the outer side edge of the porous body is in the shape of a sawtooth.

[0058] In some embodiments, the outer side edge of the porous body is provided with protrusions arranged at intervals;

[0059] An air passage is at least partially defined by the gap between adjacent protrusions to provide a path for air to pass from the second side across the porous body into the liquid storage cavity.

[0060] In some embodiments, the porous body is at least partially formed by heat fusing a plurality of fiber filaments.

[0061] In some embodiments, the fiber filaments have a cross-sectional shape that is approximately a regular hexagon or a circle or a square.

[0062] In some embodiments, the fiber filaments include at least one of glass fiber filaments or ceramic fiber filaments.

[0063] In some embodiments, the fiber filament comprises a solid fiber filament and / or a hollow fiber filament.

[0064] In some embodiments, the fiber filament comprises an inner core and an outer cladding layer wrapping the inner core.

[0065] In some embodiments, the inner core has a higher glass transition temperature than the outer cladding layer.

[0066] In some embodiments, the liquid conducting pores of the porous body are formed by chemical etching.

[0067] The above "chemical etching" is a commonly used term in the field of chemical processing, which refers to a process of using chemical reactions to corrode and remove part of the etched object, so that part of it is removed to form a void structure.

[0068] In some embodiments, the preparation of the porous body comprises:

[0069] Obtaining a dense precursor having an etchable inner core disposed therein and extending through the dense precursor;

[0070] Chemically etching the inner core of the dense precursor to remove the inner core of the dense precursor.

[0071] In some embodiments, the porous body comprises:

[0072] A porous liquid conducting portion for delivering a liquid substrate; the liquid conducting pores are disposed in the porous liquid conducting portion;

[0073] A dense portion surrounding the porous liquid conducting portion; the electronic atomization device provides support or retention to the porous body through the dense portion.

[0074] In some embodiments, further comprising:

[0075] A holder for accommodating or retaining the porous body;

[0076] A flexible sealing element between the holder and the dense portion for providing a seal therebetween.

[0077] In some embodiments, the porosity of the porous liquid conducting portion is between 30-80%.

[0078] In some embodiments, the porous body comprises:

[0079] A porous liquid conducting portion for delivering a liquid substrate; the liquid conducting pores are disposed in the porous liquid conducting portion;

[0080] A dense portion surrounding the porous liquid conducting portion;

[0081] The porous liquid conducting portion comprises or is made of first fiber filaments, which comprise an inner core and an outer cladding layer wrapping the inner core;

[0082] The dense portion comprises or is made of second fiber filaments.

[0083] In some embodiments, further comprising:

[0084] A transition layer arranged between the porous body and the heating element, the transition layer being configured to prevent the heating element from being detached from the surface of the second side of the porous body due to thermal deformation.

[0085] In some embodiments, the transition layer comprises at least one of silicon, titanium, zirconium, iron, nickel, aluminum, tungsten, chromium, niobium, tantalum, molybdenum, vanadium, gallium, samarium, zinc, tin, magnesium, or oxides, nitrides, or carbides containing them.

[0086] Yet another embodiment of the present application further provides an electronic atomization device, comprising:

[0087] A liquid storage cavity configured to store a liquid substrate;

[0088] A porous body having a first side and a second side facing away from each other; the porous body comprises:

[0089] A first porous layer proximate to or defining the first side and being in fluid communication with the liquid storage cavity to draw the liquid substrate; the pores in the first porous layer are distributed in disorder;

[0090] A second porous layer proximate to or defining the second side; the second porous portion is arranged with a plurality of liquid conducting holes penetrating through the second porous layer in the thickness direction; and the ratio of the shortest distance between adjacent liquid conducting holes to the diameter or width dimension of the liquid conducting holes is less than 1.0;

[0091] A heating element combined with the second porous layer and facing away from the first porous layer, and configured to heat the liquid substrate to generate an aerosol.

[0092] Yet another embodiment of the present application further provides an electronic atomization device, comprising:

[0093] A liquid storage cavity configured to store a liquid substrate;

[0094] A porous body having a first side and a second side facing away from each other; the porous body comprises:

[0095] A heating element combined with the second porous layer and facing away from the first porous layer, and configured to heat the liquid substrate to generate an aerosol.

[0096] The porous body is at least partially prepared by chemical etching of a dense precursor having an inner core that can be etched, after etch-removing the inner core.

[0097] In some embodiments, the dense precursor is formed by hot-melting a plurality of fiber filaments having the inner core.

[0098] Yet another embodiment of the present application also provides an electronic atomization device, comprising:

[0099] a liquid storage cavity for storing a liquid substrate;

[0100] a porous body comprising a first side in fluid communication with the liquid storage cavity and a second side facing away from the first side; the porous body having a plurality of liquid guiding holes therethrough from the first side to the second side for transferring the liquid substrate from the first side to the second side;

[0101] a heating element coupled to the second side of the porous body for heating the liquid substrate to generate an aerosol;

[0102] At least a portion of the outer edge of the porous body is in a sawtooth shape.

[0103] Yet another embodiment of the present application also provides an atomization assembly for an electronic atomization device, comprising:

[0104] a porous body comprising a first side and a second side facing away from the first side; the porous body having a plurality of liquid guiding holes therethrough from the first side to the second side for transferring the liquid substrate from the first side to the second side;

[0105] a heating element coupled to the second side of the porous body for heating the liquid substrate to generate an aerosol;

[0106] A ratio of a shortest distance between adjacent liquid guiding holes to a diameter or width dimension of the liquid guiding holes is less than 1.0.

[0107] Yet another embodiment of the present application also provides an atomization assembly for an electronic atomization device, comprising:

[0108] a porous body comprising a first side and a second side facing away from the first side; the porous body having a plurality of liquid guiding holes therethrough from the first side to the second side for transferring the liquid substrate from the first side to the second side;

[0109] a heating element coupled to the second side of the porous body for heating the liquid substrate to generate an aerosol;

[0110] The porous body is at least partially prepared by chemical etching of a dense precursor having an inner core that can be etched, after etch-removing the inner core.

[0111] Yet another embodiment of the present application also provides a method for manufacturing an atomization assembly for an electronic atomization device, comprising:

[0112] obtaining a dense precursor comprising a first side and a second side opposite to each other, the dense precursor having an inner core arranged therein and being etchable from the first side to the second side;

[0113] removing the inner core of the dense precursor by chemical etching to obtain a porous body having a hole from the first side to the second side;

[0114] forming a heating element on the second side of the porous body.

[0115] Yet another embodiment of the present application also provides a method for manufacturing an atomization assembly for an electronic atomization device, comprising:

[0116] obtaining a plurality of first fiber filaments, and fastening the plurality of first fiber filaments into at least one bundle of fiber filaments; the first fiber filaments comprising an inner core and an outer cladding layer wrapping the inner core;

[0117] heat melting the at least one bundle of fiber filaments to fuse the outer cladding layers of adjacent first fiber filaments to obtain a dense precursor having the inner core;

[0118] chemically etching the dense precursor to remove the inner core to obtain a porous body;

[0119] forming a heating element on the porous body.

[0120] The above electronic atomization device, the heating element is formed on or bonded to a rough surface with surface roughness on the second side of the porous body, which is advantageous for improving the bonding force between the heating element and the surface of the porous body. BRIEF DESCRIPTION OF DRAWINGS

[0121] One or more embodiments are illustrated by way of example in the figures that form a part of this patent document, these example are not intended to limit the embodiments, elements having the same reference numbers in the figures indicate like elements, unless otherwise expressly stated, the figures in the drawings do not constitute a proportional limitation.

[0122] Figure 1 is a schematic diagram of an electronic atomization device provided by an embodiment;

[0123] Figure 2 is Figure 1 is a structural schematic diagram of an atomizer in the electronic atomization device;

[0124] Figure 3 is Figure 2 is a structural schematic diagram of an atomization assembly in the electronic atomization device;

[0125] Figure 4 is a schematic diagram of a first fiber filament of an embodiment;

[0126] Figure 5 is a schematic diagram of a second fiber filament of an embodiment;

[0127] Figure 6 is a schematic diagram of the first fiber filament and the second fiber filament being aligned and aggregated by a jig in an embodiment;

[0128] Figure 7 is a schematic diagram of the first fiber filament and the second fiber filament in Figure 6 being fused or coupled at their abutting surfaces by vacuum heat pressing or vacuum heat drawing;

[0129] Figure 8 is a schematic diagram of a dense precursor formed by fusing or coupling the first fiber filament and the second fiber filament in Figure 7 ;

[0130] Figure 9 is a schematic diagram of a porous precursor formed by etching the inner core of the dense precursor in Figure 8 ;

[0131] Figure 10 is a schematic diagram of a porous body prepared by edge cutting and polishing the porous precursor in Figure 9 ;

[0132] Figure 11 is a scanning electron microscope image of a portion of the surface of a porous body prepared in an embodiment;

[0133] Figure 12 is a schematic diagram of a method of preparing a heating element on the surface of a porous body in an embodiment;

[0134] Figure 13 is a schematic diagram of a porous body in an embodiment after a heating element has been formed on the surface of the porous body;

[0135] Figure 14 is a scanning electron microscope image of a heating element formed on the surface of a porous body in an embodiment;

[0136] Figure 15 is a scanning electron microscope image of a porous body prepared in an embodiment after a polishing process has been performed on the surface of the porous body to remove surface defects;

[0137] Figure 16 is a micrograph of the surface of a porous body in Figure 15 after a polishing process has been performed on the surface of the porous body to remove surface defects;

[0138] Figure 17is a cross-sectional view of the roughened surface of the porous body of Figure 16 is a cross-sectional view of the polished surface of the porous body of

[0139] Figure 18 is a cross-sectional view of the roughened surface of the porous body of Figure 15 is a cross-sectional view of the polished surface of the porous body of

[0140] Figure 19 is a cross-sectional view of the roughened surface of the porous body of Figure 15 is a cross-sectional view of the polished surface of the porous body of DETAILED DESCRIPTION

[0141] For the purpose of facilitating the understanding of the present application, the present application will be described in more detail below in conjunction with the accompanying drawings and specific embodiments.

[0142] One embodiment of the present application proposes an electronic atomization device, which can be seen from Figure 1 , and comprises an atomizer 100 storing a liquid substrate and atomizing the liquid substrate to generate an aerosol, and a power supply mechanism 200 supplying power to the atomizer 100. In Figure 1 , the atomizer 100 and the power supply mechanism 200 of the electronic atomization device are separable or detachable relative to each other; the electronic atomization device having such an atomizer 100 and power supply mechanism 200 separable or detachable relative to each other, for example, a so-called "replaceable cartridge" electronic atomization device. Or in some other variant embodiments, the atomizer 100 and the power supply mechanism 200 of the electronic atomization device are tightly wrapped and fixed by the housing components of the electronic atomization device, so that the atomizer 100 and the power supply mechanism 200 cannot be formed to be detachable relative to each other from the inside of the housing components; the electronic atomization device having such an atomizer 100 and power supply mechanism 200 relative to each other, for example, a so-called "integrated or disposable" electronic atomization device.

[0143] In an optional embodiment, such as Figure 1 , the power supply mechanism 200 comprises a receiving cavity 270 arranged at one end along the length direction for receiving and accommodating at least a portion of the atomizer 100, and an electrical contact 230 at least partially exposed on the surface of the receiving cavity 270 for supplying power to the atomizer 100 when at least a portion of the atomizer 100 is received and accommodated in the power supply mechanism 200.

[0144] According to the exemplary embodiment shown in Figure 1 , the atomizer 100 is provided with an electrical contact 21 on the end opposite to the power supply mechanism 200 along the length direction, and when at least a portion of the atomizer 100 is received in the receiving cavity 270, the electrical contact 21 forms an electrical conduction by contacting and abutting against the electrical contact 230.

[0145] A sealing element 260 is provided inside the power supply mechanism 200, and the sealing element 260 divides at least a portion of the internal space of the power supply mechanism 200 to form the receiving cavity 270. Figure 1 In the exemplary embodiment shown, the seal 260 is configured to extend perpendicular to the longitudinal direction of the power supply mechanism 200. Furthermore, the seal 260 is preferably made of a flexible material to prevent the liquid matrix that seeps from the atomizer 100 into the receiving chamber 270 from flowing into components such as the controller 220 and sensor 250 inside the power supply mechanism 200.

[0146] exist Figure 1 In the exemplary embodiment shown, the power supply mechanism 200 further includes a battery cell 210 for power supply located at the other end of the receiving cavity 270 along the length direction; and a controller 220 disposed between the battery cell 210 and the receiving cavity, the controller 220 being operable to guide current between the battery cell 210 and the electrical contact 230.

[0147] In use, the power supply mechanism 200 includes a sensor 250 for sensing the suction airflow generated when the atomizer 100 is inhaled, and then the controller 220 controls the battery cell 210 to output current to the atomizer 100 according to the detection signal of the sensor 250.

[0148] exist Figure 1 In the exemplary embodiment shown, the power supply mechanism 200 is provided with a charging interface 240 at the other end away from the receiving cavity 270 for charging the battery cell 210.

[0149] Figure 2 It shows Figure 1 A schematic diagram of one embodiment of the atomizer 100 includes:

[0150] Main housing 10; according to Figure 2 As shown, the main housing 10 is generally longitudinally elongated cylindrical in shape, with a hollow interior for accommodating essential functional components for storing and atomizing the liquid matrix. The main housing 10 has a proximal end 110 and a distal end 120 that are opposite to each other along its length. The proximal end 110 is configured as the end where the user inhales the aerosol, and has an outlet 111 for the user to inhale. The distal end 120 is configured as the end that is connected to the power supply mechanism 200.

[0151] See Figure 2 As shown, the main housing 10 has a liquid storage chamber 12 for storing a liquid matrix, and an atomizing assembly for drawing the liquid matrix from the liquid storage chamber 12 and heating and atomizing the liquid matrix. Among these, in... Figure 2In the illustrated schematic view, the main housing 10 is provided with an aerosol transmission tube 11 arranged in an axial direction, and a space between the aerosol transmission tube 11 and an inner wall of the main housing 10 forms a liquid storage cavity 12 for storing a liquid substrate; the aerosol transmission tube 11 extends to or terminates at an air outlet 111, so as to transmit the generated aerosol to the air outlet 111 for smoking.

[0152] In some optional embodiments, the aerosol transmission tube 11 and the main housing 10 are integrally molded by using a moldable material, thereby defining the liquid storage cavity 12 between the aerosol transmission tube 11 and the main housing 10, and the liquid storage cavity 12 has an open end opening towards the distal end 120.

[0153] Referring to Figure 2 to Figure 3 As shown, the atomizer 100 further comprises an atomization assembly for drawing and atomizing the liquid substrate from the liquid storage cavity 12 to generate an aerosol; specifically, the atomization assembly comprises:

[0154] a rigid porous body 30, which is generally configured in a plate or sheet shape; and the porous body 30 has a first side 310 and a second side 320 facing away from each other; the first side 310 is arranged towards the liquid storage cavity 12 and is in fluid communication with the liquid storage cavity 12;

[0155] a heating element 40 combined with the second side 320 for heating at least part of the liquid substrate aerosol transmitted by the porous body 30.

[0156] Referring to Figure 2 As shown in the illustrated embodiment, the atomizer 100 further comprises:

[0157] a rigid support 20, for example made of organic polymer plastic or ceramic, etc.; the support 20 is used to accommodate and support the atomization assembly, in particular to accommodate the porous body 30;

[0158] a flexible sealing element 50, for example made of flexible material including silicone or thermoplastic elastomer, etc.; the sealing element 50 is at least partially located in the support 20 and partially surrounds or encloses the porous body 30; the sealing element 50 is used to provide a seal between the support 20 and the porous body 30.

[0159] Referring to Figure 2 to Figure 3 As shown, the porous body 30 is configured to be arranged along the longitudinal extension of the atomizer 100; and the porous body 30 is generally configured in a sheet shape. And the porous body 30 has a first side 310 and a second side 320 facing away from each other along the thickness direction. Among them, the first side 310 is arranged towards the liquid storage cavity 12 and is in fluid communication with the liquid storage cavity 12, for example in Figure 2The first side 310, as indicated by the middle arrow R1, is in fluid communication with the liquid reservoir 12 through the liquid passage 13 defined within the holder 20 to receive the liquid substrate; the surface of the second side 320 of the porous body 30 is configured to be an atomization surface, and the heating element 40 is coupled to the surface of the second side 320 of the atomization surface / porous body 30.

[0160] According to Figure 2 As shown, the porous body 30 is substantially arranged perpendicular to the longitudinal direction of the main housing 10; and a second side 320 of the porous body 30 and the distal end 120 of the main housing 10 define an atomization chamber 340, which is located at the side of the porous body 30 facing away from the liquid reservoir 12; the atomization chamber 340 is used to accommodate the released aerosol. At least a portion of the heating element 40 is exposed to the atomization chamber 340. When suction is applied, external air enters the atomization chamber 340 through the air inlet 22 of the distal end 120, carries the aerosol in the atomization chamber 340, and is output to the aerosol transmission tube 11, and then is sucked by the user at the air outlet 111, as shown in Figure 2 As indicated by the middle arrow R2.

[0161] In some embodiments, the porous body 30 is a flat sheet or plate; and the surface of the first side 310 and / or the surface of the second side 320 / atomization surface is a flatly extending plane. Or in yet other variant embodiments, the porous body 30 is a curved arc-shaped sheet; and the surface of the first side 310 and / or the surface of the second side 320 / atomization surface is a curved surface.

[0162] In Figure 2 to Figure 3 The porous body 30 is square in shape; or in yet other variant embodiments, the porous body 30 can generally have a circular, elliptical, polygonal, or other shape with side notches, etc. The porous body 30 can include at least one of glass, ceramic, carbon, metal, and high-temperature-resistant polymer plastic.

[0163] In Figure 2 to Figure 3 In the embodiment shown, the heating element 40 is a sheet-shaped heating element cut or etched from a sheet-shaped substrate and attached to the second side 320. Or in other variant embodiments, the heating element 40 includes a thin layer or conductive track formed on the second side 320 by printing, deposition, etc. Specifically, the heating element 40 includes a printed conductive track extending in a meandering or serpentine manner.

[0164] According to Figure 2 to Figure 3 As shown, the porous body 30 includes:

[0165] The plurality of liquid guide holes 321 are through from the first side 310 to the second side 320, and the liquid substrate is transferred from the first side 310 to the heating element 40 located at the second side 320 for heating and atomization through the liquid guide holes 321.

[0166] In some embodiments, the plurality of liquid conducting holes 321 in the porous body 30 are straightly extended along the thickness direction of the porous body 30; or, the liquid conducting holes 321 are penetrated through the porous body 30 along the thickness direction of the porous body 30. In some embodiments, the plurality of liquid conducting holes 321 are orderly arranged in the porous body 30. The plurality of liquid conducting holes 321 are extended in a predetermined direction, rather than disorderly. In some embodiments, the plurality of liquid conducting holes 321 are arrayed in the porous body 30; and in some embodiments, the plurality of liquid conducting holes 321 can transfer liquid matrix from the first side 310 to the second side 320 at a predetermined rate. In some embodiments, the arrangement of the plurality of liquid conducting holes 321 in the porous body 30 makes the porous body 30 in the form of a honeycomb structure.

[0167] In some general embodiments, the porous body 30 with the liquid conducting holes 321 is prepared by laser drilling or mechanical drilling on a dense substrate such as ceramic or glass.

[0168] In one embodiment of the present application, the porous body 30 with the liquid conducting holes 321 is prepared by fiber filaments. Specifically, the porous body 30 is prepared by vacuum hot melt pressing or vacuum hot melt stretching of fiber filaments followed by etching.

[0169] One embodiment of the present application also proposes a method for preparing the porous body 30 by fiber filaments, comprising:

[0170] S10, obtaining Figure 4 The first fiber filament 3100 is shown in the figure; the first fiber filament 3100 is a fiber filament with an inner core 3120 and an outer wrapping layer 3110. The inner core 3120 is etch-corrodible or dissolvable, and the outer wrapping layer 3110 is etch-resistant. Figure 4 In the embodiment shown in the figure, the first fiber filament 3100 has a cross-sectional shape of approximately regular hexagon; the inner core 3120 is substantially circular. In some embodiments, the first fiber filament 3100 has a cross-sectional shape of approximately regular hexagon; the inner core 3120 is substantially circular. Figure 4 In the embodiment shown in the figure, the first fiber filament 3100 can have at least one or more inner cores 3120.

[0171] S20, obtaining Figure 5 The second fiber filament 3200 is shown in the figure; the second fiber filament 3200 is without an inner core. The second fiber filament 3200 has the same cross-sectional shape as the first fiber filament 3100, which is regular hexagon. In some embodiments, the second fiber filament 3200 is etch-resistant, for example, the material of the second fiber filament 3200 is the same as the material of the outer wrapping layer 3110 of the first fiber filament 3100.

[0172] S30, according to Figure 6As shown, a plurality of first fiber filaments 3100 and a plurality of second fiber filaments 3200 are arranged in aggregation and clamped by the jig 4000 to form a bundle of fiber filaments or a bundle; in Figure 6 the arrangement, the second fiber filaments 3200 are arranged on the outside, and the first fiber filaments 3100 are arranged on the inside; and the abutting surfaces 3300 between adjacent fiber filaments are in abutting contact.

[0173] S40, the Figure 6 aggregated arrangement of a plurality of first fiber filaments 3100 and a plurality of second fiber filaments 3200 is subjected to vacuum hot melt stretching or vacuum hot melt pressing, so that the abutting surfaces 3300 between them are partially fused and coupled after being melted at a temperature above the glass transition temperature, as shown in Figure 7 ; after Figure 7 the abutting surfaces 3300 between the plurality of first fiber filaments 3100 and the plurality of second fiber filaments 3200 in the dense precursor are fused, a dense precursor as shown in Figure 8 is formed; in Figure 8 , the abutting surfaces 3300 between the fiber filaments in the dense precursor are substantially eliminated by fusion or coupling.

[0174] S50, the dense precursor as shown in Figure 8 is cut according to the thickness of the desired porous body 30, and the cut plurality of dense precursors are etched in an etching solution to dissolve or erode the inner core 3120 in the dense precursor, thereby obtaining a porous precursor 300 as shown in Figure 9 ; in the porous precursor 300, there are through holes 321 produced by etching and eroding the inner core 3120 by the etching solution. In some embodiments, the cutting is performed by a cutting knife or laser cutting.

[0175] S60, at least part of the outer edges of the porous precursor 300 as shown in Figure 9 are cut and polished to make the edges smooth and flat, thereby obtaining a porous body 30 as shown in Figure 10 . For example Figure 10 , the two side edges of the porous body 30 in the length direction are cut and polished to form a flat surface. For example Figure 10 , the two side edges of the porous body 30 in the width direction are not cut and polished, and the two side edges of the porous body 30 in the width direction are jagged or have different concave-convex shapes.

[0176] For example Figure 11 , an electron microscope magnified view of part of the surface of the porous body 30 prepared in an embodiment is shown; from Figure 11 , it can be seen that the residual traces of the abutting surfaces 3300 between the first fiber filaments 3100 and the second fiber filaments 3200 which were not completely fused and eliminated during preparation can be seen faintly on the porous body 30.

[0177] In embodiments, the first fiber filaments 3100 and the second fiber filaments 3200 are both solid fiber filaments.

[0178] According to Figure 10 and Figure 11 In embodiments, the porous body 30 comprises:

[0179] a central porous liquid guiding portion 32, and a dense portion 31 surrounding or avoiding the porous liquid guiding portion 32; wherein the porous liquid guiding portion 32 is substantially arranged to define a liquid guiding and atomizing region, and the liquid guiding holes 321 are located in the porous liquid guiding portion 32; and the dense portion 31 is mainly configured as a region for mounting or sealing fit.

[0180] In embodiments, the liquid guiding holes 321 are located in the porous liquid guiding portion 32 and avoid the dense portion 31.

[0181] In some embodiments, the length dimension of the porous liquid guiding portion 32 is substantially between 1 / 3 and 4 / 5 of the length of the porous body 30; for example, in specific embodiments shown in Figure 10 or Figure 11 In specific embodiments shown in

[0182] In embodiments shown in Figure 10 and Figure 11 The dense portion 31 of the porous body 30 is substantially formed or defined by the second fiber filaments 3200 being fused or coupled after vacuum hot pressing or vacuum hot drawing. And the porous liquid guiding portion 32 of the porous body 30 is substantially defined by the first fiber filaments 3100 being fused or coupled after vacuum hot pressing. The liquid guiding holes 321 in the porous liquid guiding portion 32 are formed by the inner core 3120 of the first fiber filaments 3100 being etched away. As can be seen from Figure 11 , the partial region of the dense portion 31 also has traces of abutment surfaces 3300 between adjacent second fiber filaments 3200 that are not completely fused or coupled, and these traces can be eliminated by fusing or coupling them again by vacuum hot pressing.

[0183] In some embodiments, the first fiber filaments 3100 and the second fiber filaments 3200 are or comprise glass fiber filaments or ceramic fiber filaments or silicon fiber filaments. In some embodiments, the porous body 30 is a porous glass, a porous ceramic or a porous silicon.

[0184] In some embodiments, the vacuum hot pressing or vacuum hot drawing in step S40 can be performed using conventional hot pressing or hot drawing equipment such as a glass fiber hot press, a composite material hot press forming machine, or a vacuum furnace with a drawing function.

[0185] In some embodiments, the etching solution for the glass or ceramic in step S50 can generally include an acidic etching solution of at least one of nitric acid, hydrochloric acid, hydrofluoric acid, or an alkaline etching solution of sodium hydroxide, etc. Accordingly, the outer cladding layer 3110 of the first fiber filament 3100 and / or the second fiber filament 3200 can be resistant to the acidic etching solution; the inner core 3120 of the first fiber filament 3100 can be etchable or erodible by the acidic etching solution. Alternatively, the outer cladding layer 3110 of the first fiber filament 3100 and / or the second fiber filament 3200 can be made of an acid-insoluble glass or ceramic material; the inner core 3120 of the first fiber filament 3100 can be made of an acid-soluble glass or ceramic material.

[0186] In some embodiments, the material of the outer cladding layer 3110 of the first fiber filament 3100 and / or the second fiber filament 3200 includes at least one of high-purity quartz glass generally resistant to acid, ordinary silicate glass, borosilicate glass, etc.

[0187] In some embodiments, the material of the inner core 3120 of the first fiber filament 3100 includes an acid-soluble boroaluminate glass. For example, in some specific embodiments, the material of the inner core 3120 of the first fiber filament 3100 includes 50-60 wt% B2O3, 5-10 wt% Al2O3, 30-40 wt% Na2O; for another example, in some specific embodiments, the material of the inner core 3120 of the first fiber filament 3100 includes 40-50 wt% SiO2, 20-30 wt% PbO, 20-40 wt% Na2O; for yet another example, in some specific embodiments, the material of the inner core 3120 of the first fiber filament 3100 includes 30-40 wt% SiO2, 30-40 wt% B2O3, 20-40 wt% K2O; the glass of these materials is relatively easy to be eroded and removed in the acidic etching solution of nitric acid and hydrofluoric acid.

[0188] In some embodiments, the first glass transition temperature (Tg1) of the glass material of the inner core 3120 of the first glass fiber filament 3100 is greater than the second glass transition temperature (Tg2) of the glass material of the outer cladding layer 3110 of the first glass fiber filament 3100 and / or the glass material of the second fiber filament 3200. Then, in the process of the vacuum hot melt pressing or the vacuum hot melt drawing in step S40, by heating the first glass fiber filament 3100 and the second fiber filament 3200 polymerized into a bundle or a bundle to a temperature condition lower than the second glass transition temperature (Tg2) and lower than the first glass transition temperature (Tg1) to make them fuse or couple, the inner core 3120 of the first glass fiber filament 3100 is not softened; it is convenient for preparation.

[0189] In some embodiments, the first glass transition temperature (Tg1) of the glass material of the inner core 3120 of the first glass fiber filament 3100 is between 800-1200 °C. And in some embodiments, the second glass transition temperature (Tg2) of the glass material of the outer cladding layer 3110 of the first glass fiber filament 3100 and / or the glass material of the second fiber filament 3200 is between 500-800 °C. Then in step S40, the temperature condition of the vacuum hot pressing or vacuum hot drawing process is controlled to be between 550-750 °C.

[0190] In some embodiments, the porous body 30 is prepared by fusing or coupling, cutting, etching the above first fiber filament 3100 and second fiber filament 3200.

[0191] Or in yet some other embodiments, the porous body 30 is prepared by fusing or coupling, cutting, etching only the first fiber filament 3100; then the prepared porous body 30 does not have the dense portion 31 formed by the first fiber filament 3200, but only has the porous liquid conducting portion 32 formed by the first fiber filament 3100.

[0192] In some embodiments, the porosity of the porous liquid conducting portion 32 of the prepared porous body 30 is between 30-80 %. And in some embodiments, the porosity of the dense portion 31 of the prepared porous body 30 is less than 1 %, for example, the porosity of the prepared dense portion 31 is between 0-1 %.

[0193] In some embodiments, the diameter of the liquid conducting hole 321 in the prepared porous body 30 is between 10-120 pm. The diameter of the above liquid conducting hole 321 can represent the distance between the center of the radial direction of the substantially circular liquid conducting hole 321 and the two points on the edge. And due to the preparation of hot pressing and etching, the shape of the prepared liquid conducting hole 321 can be distorted or deformed, so that they are not very standard circular shape, for example, they can be elliptical or approximately circular, etc.; thus, for the liquid conducting hole 321 which is not a standard circular shape, the diameter of the liquid conducting hole 321 can be represented as the maximum width of the liquid conducting hole 321 in the radial direction. Or more preferably, the diameter of the liquid conducting hole 321 is between 40-100 pm.

[0194] Or in yet some other varied embodiments, the liquid conducting hole 321 can be triangular, quadrilateral, pentagonal, etc. more shapes; then for the diameter of such non-circular liquid conducting hole 321, it can be represented as twice the distance from the geometric center of the liquid conducting hole 321 to one of the vertices.

[0195] In some embodiments, the shortest distance between adjacent liquid conducting holes 321 in the porous body 30 is between 5-35 pm. In some embodiments, then according to Figure 12As shown in the drawings, the shortest distance d1 between the adjacent liquid guide holes 321 can be understood as the distance between them in the direction of the virtual straight line passing through the centers of the adjacent two liquid guide holes 321. And for the non-circular liquid guide holes 321 such as triangle, quadrangle, pentagon, etc., the shortest distance between the adjacent two liquid guide holes 321 can be understood as the interval distance in the direction of the virtual straight line passing through the geometric centers of the adjacent two liquid guide holes 321.

[0196] In some embodiments, the thickness of the porous body 30 is not less than 0.1 mm. In some embodiments, the thickness of the porous body 30 is between 0.8-3.0 mm.

[0197] In some embodiments, the first fiber filaments 3100 and the second fiber filaments 3200 are of hexagonal cross-sectional shape; and the side length of the cross-section of the first fiber filaments 3100 and / or the second fiber filaments 3200 is between 0.8-1.6 mm. And the inner core 3120 of the first fiber filaments 3100 is of circular shape; and the inner core 3120 has a diameter of about 10-120 μm. Or more preferably, the diameter of the inner core 3120 is between 40-100 μm.

[0198] In yet some varied embodiments, the first fiber filaments 3100 and / or the second fiber filaments 3200 can have square, triangular, polygonal, circular, or elliptical cross-sectional shape, etc. And in yet some varied embodiments, the inner core 3120 of the first fiber filaments 3100 can have a cross-sectional shape of about square, triangular, polygonal, elliptical, etc.

[0199] For example, in some embodiments, the first fiber filaments 3100 and / or the second fiber filaments 3200 are of square cross-sectional shape; when they are aggregatedly arranged into a bundle or a bunch of fiber filaments in square, they are closely abutting and contacting with each other, and there is substantially no gap between them; and the edges of the fiber filament bundle formed after the aggregated arrangement and fastening of them are substantially flatly joined; accordingly, the porous body 30 with flat outside edges can be prepared. And in the porous body 30 prepared by using the first fiber filaments 3100 and the second fiber filaments 3200 of square cross-section, the liquid guide holes 321 are arranged in matrix or array.

[0200] In some embodiments, for example Figure 2 and Figure 10 , Figure 11 As shown in the drawings, the sealing element 50 provides sealing by surrounding or being combined with the dense portion 31. Or the stent 20 provides holding or support to the porous body 30 by being combined with or abutting against the dense portion 31.

[0201] In some embodiments, for example Figure 2 and Figure 10 ,Figure 11 In the illustrated embodiment, the outer edge of the porous body 30 has a plurality of spaced-apart protrusions 311. In the illustrated embodiment, the protrusions 311 are arranged in a staggered manner. In the illustrated embodiment, the protrusions 311 are arranged in a staggered manner along the length of the porous body 30. Figure 2 In the illustrated assembled state, the air exchange passage is defined by the gaps between adjacent protrusions 311; when the consumption of the liquid substrate causes the negative pressure within the liquid reservoir 12 to exceed a predetermined threshold, air within the aerosolization chamber 340 enters the liquid reservoir 12 through the gaps between adjacent protrusions 311 to relieve or eliminate the negative pressure within the liquid reservoir 12. Alternatively, the gaps between adjacent protrusions 311 define the air exchange passage to provide a passage path for air to pass through from the second side 320 to the first side 310 of the porous body 30.

[0202] According to Figure 12 to Figure 14 In the illustrated embodiment, the heating element 40 is formed on the surface / aerosolization surface of the second side 320 of the porous body 30 by deposition, e.g. vapor deposition. The heating element 40 comprises:

[0203] a first electrode portion 41 and a second electrode portion 42 opposite along the length of the porous body 30, and a heating portion 43 extending between the first electrode portion 41 and the second electrode portion 42. The heating portion 43 is configured to heat the liquid substrate to generate an aerosol; the first electrode portion 41 and the second electrode portion 42 are configured to direct an electric current through the heating portion 43. In the assembled state, the electrical contacts 21 extend through the distal end 120 into the atomizer 100 to abut against the first electrode portion 41 and the second electrode portion 42 to provide power to the heating element 40.

[0204] In some embodiments, the first electrode portion 41 and / or the second electrode portion 42 is further provided with an electrode, e.g. a first electrode is welded or mounted or painted and sintered on the first electrode portion 41, and a second electrode is welded or mounted or painted and sintered on the second electrode portion 42. The electrode can comprise a metal or an alloy with low resistivity, e.g. gold, silver, copper, etc.

[0205] Alternatively, in yet some embodiments, the first electrode portion 41 and / or the second electrode portion 42 is connected to the circuitry / power supply mechanism 200 by welding a conductive lead or the like to access the circuitry / power supply mechanism 200, so as to provide power to the heating element 40 by the controller 220 / power supply mechanism 200.

[0206] In embodiments, the heating element 40 is formed on the second side 320 of the porous body 30 by printing, deposition, spraying or printing, etc. to be integrated with the porous body 30. According to Figure 13 In the illustrated embodiment, the heating element 40 is substantially square or rectangular arranged along the length of the porous body 30. According to Figure 13 In the illustrated embodiment, the heating element 40 is substantially extending from the first end to the second end along the length of the porous body 30.

[0207] In Figure 13 In the embodiment shown, the first electrode portion 41 and the second electrode portion 42 are combined with the dense portion 31 of the porous body 30. In Figure 13 In the embodiment shown, the first electrode portion 41 and the second electrode portion 42 are dense. The porous body 30 has a first end and a second end opposite to each other along a length direction; the first electrode portion 41 is formed or located between the porous liquid conducting portion 32 and the first end of the porous body 30; the second electrode portion 42 is formed or located between the porous liquid conducting portion 32 and the second end of the porous body 30. The heating portion 43 is formed or located at the porous liquid conducting portion 32. The first electrode portion 41 and the second electrode portion 42 define an electrical connection region of the heating element 40. And, the heating portion 43 defines an electrical resistance heating region of the heating element 40.

[0208] In Figure 13 In the embodiment shown, the heating portion 43 of the heating element 40 is fluid permeable; as used herein, "fluid permeable" means that an aerosol in a gas phase can easily pass through the heating portion 43. For example, in Figure 13 , the heating portion 43 deposited or sprayed or printed on the surface / atomizing surface of the second side 320 of the porous body 30 can be in a mesh shape with mesh holes, thereby forming fluid permeable. In Figure 13 In the embodiment shown, the mesh holes of the heating element 40 and / or the heating portion 43 deposited or sprayed are substantially aligned with the liquid conducting holes 321, which are exposed at the port of the second side 320.

[0209] In Figure 12 to Figure 14 In the embodiment shown, the heating element 40 is substantially in a rectangular shape formed or combined with the surface of the second side 32 of the porous body 30.

[0210] In Figure 13 to Figure 14 In the embodiment shown, the heating element 40 does not entirely cover the surface of the second side 32 of the porous body 30. For example, in Figure 13 and Figure 14 In the embodiment shown, the heating element 40 is spaced apart or has a spacing from both sides of the porous body 30 along a width direction. For example, in Figure 13 and Figure 14 In the embodiment shown, the porous body 30 has a third side and a fourth side opposite to each other along a width direction; the heating element 40 is spaced apart from the third side and has a first spacing d11; the heating element 40 is spaced apart from the fourth side and has a second spacing d12. In some embodiments, the first spacing d11 and / or the second spacing d12 is between 0.5-2mm.

[0211] In Figure 13 to Figure 14In the illustrated embodiment, the porous liquid guide portion 32 is at least partially within the first distance d11 and / or the second distance d12 in width. A portion of the liquid guide holes 321 is opposite the heating portion 43 of the heating element 40, and a portion is within the first distance d11 and / or the second distance d12 and thus is offset or avoids the heating portion 43.

[0212] According to Figure 12 In the illustrated embodiment, the process of preparing the heating element 40 on the atomizing surface of the porous body 30 includes:

[0213] S100, performing surface treatment on the atomizing surface of the porous body 30 to form a rough surface having roughness on the atomizing surface;

[0214] S200, forming the heating element 40 on a portion of the rough surface of the second side 320 by deposition or spraying.

[0215] In embodiments, by performing surface treatment to roughen the atomizing surface of the porous body 30 before forming the heating element 40, the heating element 40 has more uniform thickness and / or bonding strength on the atomizing surface.

[0216] In some embodiments, the heating element 40 is prepared or formed from a resistive metal or alloy.

[0217] In some embodiments, the heating element 40 is a coating or plating formed on the surface of the porous body 30 by spraying or printing or deposition, etc.

[0218] In some embodiments, the heating element 40 can have only one coating or plating formed by spraying or deposition or printing, etc. In some embodiments, the heating element 40 can include at least two or more layers of coating or plating.

[0219] In Figure 3 In the illustrated embodiment, the heating element 40 includes a first coating or plating layer 410 and a second coating or plating layer 420 formed in sequence. The coefficient of thermal expansion of the material of the first coating or plating layer 410 is less than the coefficient of thermal expansion of the material of the second coating or plating layer 420.

[0220] In embodiments, the low coefficient of thermal expansion of the first coating or plating layer 410 is advantageous for reducing or inhibiting deformation of the heating element 40 caused by cold and hot cycles in use and providing stress compensation, preventing the heating element 40 from being loose from the surface of the second side 320.

[0221] In some embodiments, the material of the first coating or plating layer 410 includes one or more of chromium, titanium, zirconium, tungsten, chromium, niobium, tantalum, molybdenum, vanadium, and the like. Alternatively, in other embodiments, the material of the first coating or plating layer 410 includes one or more of oxides of silicon, titanium, zirconium, iron, nickel, aluminum, tungsten, chromium, niobium, tantalum, molybdenum, vanadium, gallium, samarium, zinc, tin, magnesium. In some embodiments, the material of the first coating or plating layer 410 includes titanium, zirconium, niobium, tantalum, molybdenum, iron, or alloys thereof and metal oxides formed after oxidation of the alloys. Alternatively, in other embodiments, the material of the first coating or plating layer 410 includes at least one of carbides such as boron carbide, silicon carbide, tungsten carbide, titanium carbide, zirconium carbide, hafnium carbide, tantalum carbide, titanium nitride carbide, and the like, and nitrides such as aluminum nitride, titanium nitride, silicon nitride, tantalum nitride, boron nitride, zirconium nitride, chromium nitride, titanium aluminum nitride (TiAlN), titanium aluminum carbonitride (TiAlCN), and the like.

[0222] In one specific embodiment, the first coating or plating layer 410 is a titanium layer, a chromium layer, or an alloy layer containing titanium or chromium. Alternatively, the material of the first coating or plating layer 410 is formed of titanium, chromium, or alloys thereof.

[0223] In some embodiments, the thickness of the first coating or plating layer 410 is between 20 nm and 2.5 μm.

[0224] In some embodiments, the first coating or plating layer 410 and the second coating or plating layer 420 formed on the surface of the second side 320 of the porous body 30 are sequentially sprayed or deposited and are fluid permeable.

[0225] In some embodiments, the second coating or plating layer 420 includes at least one of iron, palladium, nickel, aluminum, tungsten, chromium, niobium, tantalum, molybdenum, gallium, or alloys containing the same. In some embodiments, the second coating or plating layer 420 includes carbides and / or nitrides of at least one of palladium, nickel, aluminum, tungsten, chromium, niobium, tantalum, molybdenum, gallium.

[0226] In some embodiments, the second coating or plating layer 420 includes at least one of silver, gold, platinum. In some specific embodiments, the material of the second coating or plating layer 420 is stainless steel. In some specific embodiments, the material of the second coating or plating layer 420 is gold, platinum, or alloys thereof.

[0227] In some embodiments, the thickness of the second coating or plating layer 420 is less than 2 μm.

[0228] In some embodiments, the thickness of the heating element 40 including one or more coating or plating layers is less than or equal to 2.5 μm.

[0229] In some embodiments, the controller 220 / power supply mechanism 200 controls the supply of power to the heating element 40 at a power of approximately 5 to 20 W.

[0230] In some embodiments, the surface power density carried by the heating portion 43 of the heating element 40 is less than 1 W / mm 2 In some embodiments, by making the heating portion 43 have an area of 5-20 mm 2 , the surface power density carried by the heating portion 43 of the heating element 40 is less than 1 W / mm 2 .

[0231] In yet some embodiments, the surface power density carried by the heating portion 43 of the heating element 40 is greater than 0.4 W / mm 2 , so that the heating portion 43 can generate sufficient electric resistance Joule heat in operation.

[0232] In some embodiments, the way of roughening the atomizing surface of the porous body 30 by surface treatment can include at least one or more of laser etching, chemical etching, sandblasting or mechanical polishing. In yet some embodiments, the way of roughening the atomizing surface of the porous body 30 by surface treatment can include sandblasting or polishing. In some specific or optional embodiments, the chemical etching is performed, for example, etching with a chemical reagent such as NaOH or HF solution, etc. In some specific or optional embodiments, the laser etching is performed, for example, infrared or ultraviolet laser etching, etc.

[0233] In embodiments, the atomizing surface of the porous body 30 is formed into a frosted surface with surface microstructure after the surface roughening treatment. In embodiments, the atomizing surface of the porous body 30 is a rough surface with unevenness.

[0234] In embodiments, the surface / atomizing surface of the second side 320 of the porous body 30 has a roughness Ra of 3-320 nm. In more preferred embodiments, the surface / atomizing surface of the second side 320 of the porous body 30 has a roughness Ra of 50-320 nm. In more preferred embodiments, the surface / atomizing surface of the second side 320 of the porous body 30 has a surface roughness Ra of not more than 200 nm.

[0235] In which, the "surface roughness" is a term in the field of machining, which refers to the unevenness of the machining surface with small pitch and tiny peaks and valleys. In actual provisions and uses, the surface roughness has multiple characterization parameters, for example, the national standard GB / T1031-2009 "Surface Structure Profile Method Surface Roughness Parameters and Their Numerical Values" details the relevant terms and evaluation parameter standards of surface roughness; among them, the height characteristic parameter, the pitch characteristic parameter, and the shape characteristic parameter can all be used to measure the surface roughness.

[0236] The "Ra, i.e. the arithmetical mean deviation of the profile" is one of the height parameters of the surface roughness; in the national standard GB / T 1031-2009 "Surface texture - Parameters of surface roughness and their numerical values", it is detected and calculated by the arithmetical mean value of the absolute value of the profile deviation within the sampling length lr.

[0237] In yet some embodiments, before the roughening surface treatment of the surface / atomizing surface of the second side 320 of the porous body 30, it can further comprise: a smoothing treatment such as polishing or grinding treatment of the surface / atomizing surface of the second side 320 of the porous body 30; by first performing the smoothing treatment to eliminate surface defects such as recesses, burrs or protrusions on the surface, it is advantageous for improving the consistency of the atomizing surface roughness of the porous body 30 in subsequent mass production.

[0238] Figure 15 The micro-morphology of the atomizing surface of the cut-prepared porous body 30 after the polishing treatment to eliminate surface defects such as recesses, burrs or protrusions on the surface is shown in FIG. 8. Figure 15 As can be seen from FIG. 8, the atomizing surface after the surface polishing treatment is flat or smooth, and the surface defects such as residual traces of fiber boundary fusion, burrs or protrusions are basically completely eliminated. Figure 16 The micro-morphology of the atomizing surface of the porous body 30 after the polishing treatment in FIG. 6 is shown in FIG. 7. Figure 15 The micro-morphology of the atomizing surface of the porous body 30 after the sandblasting to form a roughened surface after the polishing treatment in FIG. 7 is shown in FIG. 8. Figure 16 As can be seen from FIG. 8, the atomizing surface after the further sandblasting treatment forms a rough structure with unevenness.

[0239] In some embodiments, the deposition of the heating element 40 on the roughened surface of the second side 320 in step S200 can comprise chemical vapor deposition or physical vapor deposition. In some embodiments, the spraying of the heating element 40 on the roughened surface of the second side 320 in step S200 can comprise plasma spraying or the like.

[0240] Figure 17 The electron microscope magnified view of the heating element 40 of the alloy material of gold and platinum formed by vapor deposition on the atomizing surface of the porous body 30 after the roughening treatment in one embodiment is shown in FIG. 9. Figure 18 and Figure 19 The electron microscope magnified view of the heating element 40 of the alloy material of gold and platinum formed by vapor deposition on the atomizing surface of the porous body 30 before the roughening treatment in two comparative examples is shown in FIG. 10.

[0241] As can be seen from FIG. 10, the heating element 40 formed by vapor deposition has a large area of unbound area on the atomizing surface of the porous body 30, i.e. Figure 18 and Figure 19 As can be seen from FIG. 10, the heating element 40 formed by vapor deposition has a large area of unbound area on the atomizing surface of the porous body 30, i.e. Figure 18 andFigure 19 The large number of black voids in the alloy material of the heating element 40 is due to the atomized surface of the porous body 30 not being combined with the alloy material of gold and platinum. This makes the overall thickness of the prepared heating element 40 uneven, and there are a large number of cracks or voids that cannot conduct electricity continuously, so that the resistance value of the prepared heating element 40 is unstable. From the enlarged view of the embodiment, it can be seen that the overall thickness of the heating element 40 deposited on the atomized surface of the porous body 30 after the roughening treatment is uniform, and there are basically no black voids in the heating element 40 in the embodiment. Figure 17 Figure 18 Figure 19

[0242] The following shows the data of the resistance value measured by the electrical contact 21 under different heating and cooling cycles of the heating element 40 (including a 0.8 μm titanium layer and a 0.65 μm gold-platinum alloy layer) with a deposition width of 1.8 mm and a thickness of 1.45 μm after cutting the second side 320 of the prepared porous body 30 under non-roughening treatment and roughening treatment, respectively. Among them, the heating and cooling cycle is a cycle of repeatedly supplying power to the heating element 40 at a constant working power of 7.5 W for 3 s of suction time to heat the liquid matrix, and then cooling for 20 s. Among them, R0 is the initial resistance value measured by the electrical contact 21 on the heating element 40 before the heating and cooling cycle test; R100 is the resistance value measured by the electrical contact 21 on the heating element 40 when the heating and cooling cycle is 100 times; R200 is the resistance value measured by the electrical contact 21 on the heating element 40 when the heating and cooling cycle is 200 times; R400 is the resistance value measured by the electrical contact 21 on the heating element 40 when the heating and cooling cycle is 400 times; R800 is the resistance value measured by the electrical contact 21 on the heating element 40 when the heating and cooling cycle is 800 times; R1000 is the resistance value measured by the electrical contact 21 on the heating element 40 when the heating and cooling cycle is 400 times.

[0243]

[0244] ​​​wherein the surface roughness of the atomized surface of the porous body 30 after surface polishing treatment to eliminate burrs, protrusions and other defects after cutting in sample 2 in the above table is approximately 1 nm, and the thickness of the heating element 40 of the titanium layer and the gold-platinum alloy layer deposited by vapor deposition. The surface roughness of the atomized surface of the porous body 30 after polishing and then laser etching roughening treatment in sample 3 in the above table is approximately 5 nm. As can be seen from the test results in the above table, when the surface of the second side 320 of the porous body 30 after fusion pressing, cutting and etching of the first fiber filament 3100 and the second fiber filament 3200 is not treated, due to the presence of burrs and other surface defects of cutting processing, the flatness and uniformity of the heating element 40 formed by vapor deposition are insufficient, and the resistance R200 measured by the cycle test of heating and cooling 200 times has been significantly increased compared with the initial resistance R0.

[0245] In some embodiments, the surface / atomized surface of the second side 320 of the porous body 30 has a roughness greater than 5 nm. In more preferred embodiments, the surface / atomized surface of the second side 320 of the porous body 30 has a roughness greater than or equal to 20 nm. In some preferred embodiments, the surface roughness Ra of the surface / atomized surface of the second side 320 of the porous body 30 is between 50 nm and 200 nm.

[0246] In some embodiments, the ratio of the thickness of the heating element 40 to the surface roughness Ra of the atomized surface of the porous body 30 is greater than or equal to 2. In some more preferred embodiments, the ratio of the thickness of the heating element 40 to the surface roughness Ra of the atomized surface of the porous body 30 is greater than or equal to 3. In some more preferred embodiments, the ratio of the thickness of the heating element 40 to the surface roughness Ra of the atomized surface of the porous body 30 is between 10 and 200.

[0247] The following table shows the data of the resistance value measured by the electrical contact 21 on the heating element 40 under the different heating and cooling cycles of 7.5W constant working power, when the atomized surface with different surface roughness Ra and the thickness of the heating element 40 in a plurality of samples in another embodiment. In which, the heating element 40 uses titanium layer as the first plating layer, and the alloy layer of gold and platinum as the second plating layer; the width of the heating element 40 is 1.6mm; and by keeping the thickness of the second plating layer constant at 0.6μm, and adjusting the thickness of the first plating layer according to the thickness of the heating element 40, so that the overall thickness of the heating element 40 is the thickness in each sample in the following table. And the heating and cooling cycle in the test is repeated to supply power to the heating element 40 at 7.5W constant working power for 3s suction time to heat the liquid matrix, and then cool for 20s. In which, R0 is the initial resistance value measured by the electrical contact 21 on the heating element 40 before the heating and cooling cycle test; R100 is the resistance value measured by the electrical contact 21 on the heating element 40 when the heating and cooling cycle is 100 times; R200 is the resistance value measured by the electrical contact 21 on the heating element 40 when the heating and cooling cycle is 200 times; R400 is the resistance value measured by the electrical contact 21 on the heating element 40 when the heating and cooling cycle is 400 times; R800 is the resistance value measured by the electrical contact 21 on the heating element 40 when the heating and cooling cycle is 800 times; R1000 is the resistance value measured by the electrical contact 21 on the heating element 40 when the heating and cooling cycle is 400 times.

[0248]

[0249]

[0250] From the measured resistance results in the above table, when the surface roughness Ra of the atomized surface is about 3nm, the initial resistance R0 exceeds the appropriate range of 2.0Ω, and the resistance value measured by the partial pressure detection after 100 heating cycles is basically not measurable, which may be that the plating layer of the heating element 40 is broken or peeled off after the heating cycle. And from the measured resistance results in the above table, within the interval of the surface roughness Ra of 20nm-320nm, and the ratio of the thickness of the heating element 40 to the surface roughness Ra is 4.4-60, the measured data is combined well.

[0251] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of the present application, but are not limited to the embodiments described in the specification, and further, those skilled in the art can make improvements or changes according to the above description, and all these improvements and changes shall belong to the protection scope of the appended claims of the present application.

Claims

1. An electronic atomizing device, characterized in that, include: A liquid storage chamber is used to store a liquid matrix; A porous body includes a first side in fluid communication with the liquid storage chamber and a second side away from the first side; the porous body has a plurality of liquid guiding holes extending from the first side to the second side for transferring a liquid matrix from the first side to the second side; the surface of the second side of the porous body is at least partially a rough surface; A heating element, incorporated into a rough surface on the second side of the porous body, is used to heat a liquid matrix to generate an aerosol; the ratio of the thickness of the heating element to the surface roughness of the rough surface is greater than or equal to 2.

2. The electronic atomizing device as described in claim 1, characterized in that, The heating element is configured as a coating or plating formed on the rough surface by deposition, spraying, or printing.

3. The electronic atomizing device as described in claim 1 or 2, characterized in that, The surface roughness of the rough surface is between 3 and 320 nm.

4. The electronic atomizing device as described in claim 3, characterized in that, The ratio of the thickness of the heating element to the surface roughness of the rough surface is between 4.4 and 60.

5. The electronic atomizing device as described in claim 1 or 2, characterized in that, The surface roughness of the rough surface is greater than or equal to 20 nm.

6. The electronic atomizing device as described in claim 1 or 2, characterized in that, The thickness of the heating element is less than or equal to 2.5 μm.

7. The electronic atomizing device as described in claim 1 or 2, characterized in that, The heating element includes a first coating or plating layer and a second coating or plating layer sequentially formed on the surface of the second side of the porous body.

8. The electronic atomizing device as described in claim 7, characterized in that, The coefficient of thermal expansion of the material of the first coating or plating layer is less than the coefficient of thermal expansion of the material of the coating or plating layer.

9. The electronic atomizing device as described in claim 7, characterized in that, The first coating or plating is prepared or formed of chromium, titanium, or alloys thereof; Alternatively, the second coating or plating may be prepared or formed of stainless steel; or the second coating or plating may be prepared or formed of gold, platinum, or alloys thereof.

10. The electronic atomizing device as described in claim 1 or 2, characterized in that, The rough surface is formed by performing at least one or more surface roughening treatments on at least a portion of the surface of the second side of the porous body, including laser etching, chemical etching, sandblasting, or mechanical polishing.

11. The electronic atomizing device as described in claim 1 or 2, characterized in that, The porous body is constructed in a basically sheet-like shape; And / or, the first side and the second side are opposite to each other along the thickness direction of the porous body.

12. The electronic atomizing device as described in claim 1 or 2, characterized in that, The porous body includes a third side and a fourth side that are opposite to each other along the width direction; The heating element is configured to be a square or rectangular shape extending along the length of the porous body; the heating element is spaced apart from the third side and has a first gap between them; and / or, the heating element is spaced apart from the fourth side and has a second gap between them.

13. The electronic atomizing device as described in claim 12, characterized in that, A portion of the liquid guiding hole is located within the first spacing and / or the second spacing.

14. An electronic atomizing device, characterized in that, include: A liquid storage chamber is used to store a liquid matrix; A porous body includes a first side and a second side opposite to each other along the thickness direction, and a third side and a fourth side opposite to each other along the width direction; the first side is in fluid communication with the liquid storage cavity; the porous body has a plurality of liquid guiding holes extending from the first side to the second side for transferring the liquid matrix from the first side to the second side; A heating element is attached to the surface of a second side of the porous body and is used to heat a liquid matrix to generate an aerosol; the heating element is a rectangular or square shape arranged extending along the length of the porous body; the heating element is spaced apart from the third side and has a first gap between it and the third side; and / or, the heating element is spaced apart from the fourth side and has a second gap between it and the fourth side; A portion of the liquid guiding hole is opposite to the heating element, and a portion is located within the first spacing and / or the second spacing.

15. An atomizing component for an electronic atomizing device, characterized in that, include: A porous body includes a first side and a second side facing away from each other, and a plurality of liquid guiding holes extending from the first side to the second side; the surface of the second side of the porous body is at least partially a rough surface; A heating element is attached to a rough surface on the second side of the porous body; the ratio of the thickness of the heating element to the surface roughness of the rough surface is greater than or equal to 2.

16. An atomizing component for an electronic atomizing device, characterized in that, include: The porous body includes a first side and a second side that are opposite to each other along the thickness direction, and a third side and a fourth side that are opposite to each other along the width direction; A heating element is attached to the surface of a second side of the porous body and is configured to be a rectangular or square shape extending along the length of the porous body; the heating element is spaced apart from the third side and has a first gap between them; and / or, the heating element is spaced apart from the fourth side and has a second gap between them. The porous body has a plurality of liquid guiding holes extending from the first side to the second side; a portion of the liquid guiding holes is opposite to the heating element, and a portion is located within the first spacing and / or the second spacing.

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