Electronic atomization device and porous body element for electronic atomization device

Abstract

The utility model provides an electronic atomization device and a porous body element for the electronic atomization device. The electronic atomization device comprises a liquid storage cavity; the porous body element is provided with a first side and a second side, and the first side is communicated with the liquid storage cavity; the heating element is combined on the second side; the porous body element includes at least two porous layers arranged in a stacked manner; a plurality of liquid guide holes are formed in the porous layer, each liquid guide hole is provided with a first port located in the first surface and a second port located in the second surface, and the diameter of the first port is larger than that of the second port; every two adjacent first ports are partially overlapped or interfered, so that the plurality of first ports are communicated on the first surface, and a cross-linked network-shaped liquid storage channel is formed between every two adjacent porous layers. According to the electronic atomization device, the porous body element can prevent the liquid guide holes of the porous layer from influencing liquid guide due to bubble clamping, and meanwhile, the problem that liquid supply is insufficient due to the fact that aerosol generated in the atomization process reversely pushes a liquid matrix can be solved.

Description

Technical Field

[0001] This application relates to the field of electronic atomization technology, and in particular to an electronic atomization device and a porous element for the electronic atomization device. Background Technology

[0002] Tobacco products (such as cigarettes, cigars, etc.) produce tobacco smoke by burning tobacco during use. Efforts are being made to replace these tobacco-burning products by creating products that release compounds without combustion.

[0003] Examples of such products are heating devices that release compounds by heating rather than burning materials. For example, the material could be tobacco or other non-tobacco products, which may or may not contain nicotine. As another example, there are aerosol-providing articles, such as so-called electronic atomizing devices. These electronic atomizing devices typically contain a liquid, which is heated by a heating element to produce an inhalable aerosol; the heating element is arranged on a porous ceramic with through-holes, which is prepared by forming through-holes in a predetermined direction on dense ceramic through methods such as laser drilling or mechanical drilling. These through-holes are used to transfer the liquid to the heating element for heating and atomization. Utility Model Content

[0004] One embodiment of this application provides an electronic atomizing device, comprising:

[0005] A liquid storage chamber is used to store a liquid matrix;

[0006] A porous element having a first side and a second side facing away from each other, wherein the first side is in communication with the liquid storage cavity to receive a liquid matrix; the porous element includes at least two porous layers stacked from the first side to the second side; the porous layers have a plurality of liquid guiding holes arranged in a predetermined direction for transferring the liquid matrix from the first side to the second side.

[0007] A heating element, at least partially formed or incorporated into the second side of the porous element, is used to heat the liquid matrix to generate an aerosol;

[0008] The porous layer has a first surface facing the first side and a second surface facing the second side; the liquid guiding hole has a first port located on the first surface and a second port located on the second surface, the diameter of the first port being larger than the diameter of the second port; two adjacent first ports partially overlap or interfere with each other so that a plurality of first ports form a connection on the first surface, thereby forming a cross-linked network of liquid storage channels between two adjacent porous layers.

[0009] In some embodiments, the liquid guiding hole is a tapered hole.

[0010] In some embodiments, the diameter of the first port is between 0.04 and 0.2 mm;

[0011] And / or, the diameter of the second port is between 0.02 and 0.1 mm.

[0012] In some embodiments, the second ports of the plurality of liquid guiding holes are arranged discretely or at intervals on the second surface.

[0013] In some embodiments, a gap is provided in the partition wall between two adjacent first ports on the first surface, thereby connecting the two adjacent first ports.

[0014] In some embodiments, the first surface is a rough surface; and / or, the second surface is a flat plane.

[0015] In some embodiments, the porous layer has a thickness of 0.2 to 1 mm;

[0016] And / or, the porous element comprises 2 to 10 porous layers arranged in a stacked manner.

[0017] In some embodiments, a plurality of the liquid guiding pores in the porous layer are arranged in an array, thereby giving the porous layer a honeycomb structure.

[0018] In some embodiments, the distance between adjacent first ports on the first surface is less than the diameter of the first port.

[0019] Another embodiment of this application provides a porous element for an electronic atomizing device, the porous element having a first side and a second side facing away from each other; the porous element includes:

[0020] At least two porous layers are stacked from the first side to the second side; the porous layers have a plurality of liquid guiding holes arranged in a predetermined direction for transferring the liquid matrix from the first side to the second side;

[0021] The porous layer has a first surface facing the first side and a second surface facing the second side; the liquid guiding hole has a first port located on the first surface and a second port located on the second surface, the diameter of the first port being larger than the diameter of the second port; two adjacent first ports partially overlap or interfere with each other so that a plurality of first ports form a connection on the first surface, thereby forming a cross-linked network of liquid storage channels between two adjacent porous layers.

[0022] Another embodiment of this application provides a porous element for an electronic atomizing device, comprising:

[0023] The first and second surfaces are opposite to each other;

[0024] A plurality of liquid guiding holes extend from the first surface to the second surface; the liquid guiding holes are configured as tapered holes with a cross-sectional area or diameter that gradually decreases in the direction close to the second surface; the liquid guiding holes have a first port located on the first surface and a second port located on the second surface, the diameter of the first port being larger than the diameter of the second port;

[0025] Two adjacent first ports partially overlap or interfere with each other, thereby forming a connected cross-linked network of several first ports on the first surface; the second ports are arranged discretely or at intervals on the second surface.

[0026] The above electronic atomization device, the liquid storage channel between adjacent porous layers of the porous body can avoid the liquid guiding hole being affected by trapped air bubbles, and at the same time can prevent or eliminate the insufficient liquid supply caused by the aerosol generated during the atomization process pushing the liquid matrix in the opposite direction. Attached Figure Description

[0027] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0028] Figure 1 This is a schematic diagram of an electronic atomizing device provided in one embodiment;

[0029] Figure 2 yes Figure 1 A schematic diagram of the structure of an embodiment of a central atomizer;

[0030] Figure 3 yes Figure 2 Another structural schematic diagram of a porous element;

[0031] Figure 4 yes Figure 3 Another structural schematic diagram of a porous element;

[0032] Figure 5 yes Figure 3 A partial enlarged view of the surface of the first side of the porous element;

[0033] Figure 6 yes Figure 2 A magnified view of a cross-section of a porous element;

[0034] Figure 7 yes Figure 2 A magnified view of another cross-sectional perspective of the porous element;

[0035] Figure 8 This is a schematic diagram showing the cross-linking formed by interference or overlap of the first port of the liquid-conducting pores in a porous layer on the surface;

[0036] Figure 9 yes Figure 2 A schematic diagram of the structure of one embodiment of the heating element;

[0037] Figure 10 yes Figure 2 A schematic diagram of another embodiment of the heating element. Detailed Implementation

[0038] To facilitate understanding of this application, a more detailed description of this application will be provided below in conjunction with the accompanying drawings and specific embodiments.

[0039] One embodiment of this application provides an electronic atomizing device, which can be found in [reference needed]. Figure 1 As shown, it includes an atomizer 100 that stores a liquid matrix and atomizes it to generate an aerosol, and a power supply mechanism 200 that supplies power to the atomizer 100. Figure 1 In the illustrated embodiment, the atomizer 100 and power supply mechanism 200 of the electronic atomizing device are separable or detachable relative to each other; an electronic atomizing device having such a separable or detachable atomizer 100 and power supply mechanism 200 is, for example, a so-called "refillable" electronic atomizing device. Alternatively, in some further variations, the atomizer 100 and power supply mechanism 200 of the electronic atomizing device are securely enclosed and fixed by the housing components of the electronic atomizing device, thereby preventing the atomizer 100 and power supply mechanism 200 from being detachable relative to each other; an electronic atomizing device having such a non-detachable atomizer 100 and power supply mechanism 200 relative to each other is, for example, a so-called "integrated or disposable" electronic atomizing device.

[0040] In an alternative embodiment, for example Figure 1 As shown, the power supply mechanism 200 includes a receiving cavity 270 disposed 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 within the power supply mechanism 200.

[0041] according to Figure 1 In the exemplary embodiment shown, an electrical contact 21 is provided at one end of the atomizer 100 along the length direction, so that when at least a portion of the atomizer 100 is received in the receiving cavity 270, the electrical contact 21 forms an electrical conductivity by contacting and abutting against the electrical contact 230.

[0042] exist Figure 1In the exemplary embodiment shown, a sealing member 260 is provided inside the power supply mechanism 200, and the sealing member 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 along the cross-sectional direction of the power supply mechanism 200, and is preferably made of a flexible material, thereby preventing the liquid matrix that seeps from the atomizer 100 into the receiving cavity 270 from flowing into components such as the controller 220 and sensor 250 inside the power supply mechanism 200.

[0043] 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 270, the controller 220 being operable to guide current between the battery cell 210 and the electrical contact 230.

[0044] 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.

[0045] 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.

[0046] Figure 2 It shows Figure 1 A schematic diagram of one embodiment of the atomizer 100 includes:

[0047] The housing 10 defines at least a portion of the outer surface of the atomizer 100. According to Figure 2 As shown, the outer casing 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 outer casing 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; while the distal end 120 is configured as the end that is connected to the power supply mechanism 200.

[0048] See Figure 2 As shown, the 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 schematic diagram shown, the outer shell 10 is provided with an aerosol transmission tube 11 arranged along the axial direction. The space between the aerosol transmission tube 11 and the inner wall of the outer shell 10 forms a liquid storage chamber 12 for storing liquid matrix. The aerosol transmission tube 11 extends to or terminates at the air outlet 111, thereby transmitting the generated aerosol to the air outlet 111 for inhalation.

[0049] In some alternative embodiments, the aerosol delivery tube 11 and the housing 10 are integrally molded from a moldable material, thereby defining a liquid reservoir 12 between the aerosol delivery tube 11 and the housing 10, and the liquid reservoir 12 has an opening that opens toward the distal end 120.

[0050] See Figures 2 to 3 As shown, the atomizer 100 further includes an atomizing component for drawing and atomizing the liquid matrix from the liquid reservoir 12 to generate an aerosol; specifically, the atomizing component includes:

[0051] The rigid porous element 30 is generally configured to be plate-shaped, sheet-shaped, or block-shaped; and the porous element 30 has a first side 310 and a second side 320 facing away from each other; the first side 310 is arranged toward the liquid storage cavity 12 and is in fluid communication with the liquid storage cavity 12.

[0052] Heating element 40, attached to the surface of the second side 320 of porous element 30, is used to heat at least a portion of the liquid matrix transferred by porous element 30 to generate an aerosol.

[0053] See Figure 2 In the embodiment shown, the atomizer 100 further includes:

[0054] The rigid support 20 is made of, for example, organic polymer plastic or ceramic; the support 20 is used to house and support the atomizing assembly, especially to house the porous element 30;

[0055] The sealing element 50 is made of a flexible material, such as silicone or a thermoplastic elastomer; the sealing element 50 is at least partially located within the support 20 and partially surrounds or encloses the porous element 30; the sealing element 50 is used to provide a seal between the support 20 and the porous element 30.

[0056] See Figures 2 to 3 As shown, the porous element 30 is configured to extend longitudinally perpendicular to the atomizer 100; the first side 310 and the second side 320 of the porous element 30 are arranged opposite to each other along the longitudinal direction of the atomizer 100. The surface of the first side 310 of the porous element 30 is configured as a liquid-absorbing surface for absorbing the liquid matrix of the liquid storage chamber 12; specifically, the first side 310 of the porous element 30 is arranged facing the liquid storage chamber 12 and is in fluid communication with the liquid storage chamber 12, for example in... Figure 2The first side 310, indicated by the middle arrow R1, is in fluid communication with the liquid storage chamber 12 through the liquid transfer channel 13 defined within the support 20 to receive the liquid matrix; the surface of the second side 320 of the porous element 30 is configured as an atomizing surface, and the heating element 40 is attached to the atomizing surface / the surface of the second side 320 of the porous element 30.

[0057] according to Figure 2 As shown, an atomizing chamber 340 is defined between the second side 320 of the porous element 30 and the distal end 120 of the housing 10. This atomizing chamber 340 is located on the side of the porous element 30 opposite to the liquid reservoir 12; the atomizing chamber 340 provides space for releasing aerosol from the atomizing surface of the porous element 30. At least a portion of the heating element 40 is exposed in the atomizing chamber 340. During suction, external air enters the atomizing chamber 340 through the air inlet 22 of the distal end 120, carrying the aerosol within the atomizing chamber 340 to the aerosol delivery tube 11, and is then drawn in by the user at the air outlet 111. Figure 2 As indicated by the middle arrow R2.

[0058] Alternatively, in some variations, the atomizer 100 includes a transverse direction perpendicular to the longitudinal direction; for example, the transverse direction can be either the width direction or the thickness direction of the atomizer 100. Alternatively, for a cylindrical or similar polygonal atomizer 100, the transverse direction can be radial. In an embodiment, the porous element 30 is configured to extend longitudinally along the atomizer 100; the first side 310 and the second side 320 of the porous element 30 are arranged opposite to each other along the transverse direction of the atomizer 100. Thus, the surfaces of the first side 310 and / or the second side 320 of the porous element 30 both extend longitudinally along the atomizer 100; for example, a so-called "side-atomizing" atomizing assembly.

[0059] In some embodiments, the porous element 30 is a flat sheet or plate; and the surface of the first side 310 and / or the surface / atomizing surface of the second side 320 are flat, extended planes. Alternatively, in some other variations, the porous element 30 is a curved, arcuate sheet; and the surface of the first side 310 and / or the surface / atomizing surface of the second side 320 are curved surfaces.

[0060] exist Figures 2 to 4 In this embodiment, the porous element 30 is square in shape; or in some other variations, the porous element 30 may be generally circular, elliptical, polygonal, or other shapes with side notches. The porous element 30 may include at least one of glass, ceramic, carbon, metal, and high-temperature resistant polymer plastics.

[0061] In some embodiments, the heating element 40 is a sheet-like heating element that is cut or etched from a sheet substrate and then mounted on the second side 320. In some embodiments, the heating element 40 may be made of a sheet of resistive metal or alloy. In some embodiments, the heating element 40 may include at least one sheet of stainless steel, iron-chromium-aluminum, nickel-chromium alloy, titanium alloy, etc. In embodiments, the sheet-like heating element 40 may be bonded to the porous element 30 by means of glass enamel bonding or surface mounting.

[0062] In some embodiments, the heating element 40 is formed on the second side 320 of the porous element 30 by printing, deposition, spraying, or other methods, thereby achieving close bonding with the porous element 30. Alternatively, in other variations, the heating element 40 includes a thin layer or conductive trace formed on the second side 320 by printing, deposition, or other methods. Specifically, the heating element 40 includes printed, meandering, or meandering conductive traces. In some embodiments, the coating-type heating element 40 may be prepared from one or more of gold, platinum, tantalum, zirconium, niobium, molybdenum, tungsten, tantalum nitride, tungsten carbide, titanium nitride, stainless steel, gold-silver alloys, TiAlN alloys, silver-palladium alloys, nickel-based alloys, nickel-chromium alloys, etc. In some embodiments, the thickness of the coating-type heating element 40 is 0.5–5 μm.

[0063] In some embodiments, a transition layer is further provided between the heating element 40 and the surface of the second side 320 of the porous element 30. The transition layer is advantageous for reducing or suppressing deformation of the heating element 40 caused by thermal cycling during use and for providing stress compensation, thus preventing the heating element 40 from loosening.

[0064] In some embodiments, the transition layer comprises one or more of Ti, Cr, Ni, Mo, Ta, and their oxides or alloys. The coefficient of thermal expansion of the transition layer material is preferably between that of the porous element 30 and the heating element 40; this is advantageous for providing stress compensation and reducing thermal deformation and shedding of the heating element 40. In some embodiments, the thickness of the transition layer is 50–200 μm; in some embodiments, the transition layer is formed between the heating element 40 and the surface of the second side 320 of the porous element 30 by vapor deposition or thermal spraying.

[0065] Alternatively, in some other embodiments, a protective layer may be deposited, sprayed, or covered on the surface of the heating element 40; the protective layer may include one or more of gold, platinum, titanium nitride, tantalum nitride, tungsten carbide, titanium aluminum nitride, chromium aluminum nitride, silicon oxide, silicon nitride, and stainless steel.

[0066] according to Figure 2 , Figure 9 and Figure 10 As shown, the heating element 40 includes:

[0067] A first electrode portion 41 and a second electrode portion 42 are arranged at intervals along the length direction, and a heating portion 43 extends between the first electrode portion 41 and the second electrode portion 42. The heating portion 43 is used to heat the liquid matrix to generate an aerosol; the first electrode portion 41 and the second electrode portion 42 are used to guide current on the heating portion 43. After assembly, an electrical contact 21 extends from the distal end 120 into the atomizer 100 and abuts against the first electrode portion 41 and the second electrode portion 42 to supply power to the heating element 40.

[0068] according to Figure 2 , Figure 9 and Figure 10 In the illustrated embodiment, the first electrode portion 41 and the second electrode portion 42 define the electrical connection region of the heating element 40. Additionally, the heating portion 43 defines the resistance heating region of the heating element 40.

[0069] In some embodiments, electrodes are further arranged on the first electrode portion 41 and / or the second electrode portion 42. For example, the first electrode is arranged by welding, mounting, or sintering after applying silver paste to the first electrode portion 41, and the second electrode is arranged by welding, mounting, or sintering after applying silver paste to the second electrode portion 42. The material of the electrodes may include metals or alloys with low resistivity such as gold, silver, and copper.

[0070] Alternatively, in some other embodiments, the first electrode portion 41 and / or the second electrode portion 42 are connected to the circuit / power supply mechanism 200 by welding conductive leads or the like, so as to enable the controller 220 / power supply mechanism 200 to provide power to the heating element 40.

[0071] In some embodiments, the heating element 40 is fluid-permeable; as used herein, "fluid-permeable" means that aerosols in the gas phase can easily pass through the heating element 40. For example, in Figure 8 As shown, the heating element 40 formed or incorporated on the surface / atomizing surface of the second side 320 of the porous element 30 can be in a mesh shape with pores 431, thereby creating a fluid-permeable environment. For example, in Figure 8 In the illustrated embodiment, the heating portion 43 is a mesh shape with openings 431, through which aerosols can pass through the heating portion 43 and / or the heating element 40, thereby making the heating portion 43 and / or the heating element 40 fluid-permeable. Alternatively, in... Figure 9In the illustrated embodiment, the heating portion 43 is arranged to meander or meander along the length of the heating element 40. Several slits or gaps are formed on the heating portion 43, through which aerosol can pass through the heating portion 43 and / or the heating element 40, thereby making the heating portion 43 and / or the heating element 40 fluid-permeable.

[0072] according to Figures 2 to 4 As shown, the porous element 30 can be essentially sheet-like or block-like. In Figures 2 to 4 As shown, the length of the porous element 30 may be greater than its width, and the width may be greater than its height. In some embodiments, the length of the porous element 30 is approximately between 6 and 15 mm; the width of the porous element 30 is approximately between 3 and 6 mm; and the thickness of the porous element 30 is approximately between 0.8 and 3 mm.

[0073] according to Figures 2 to 4 As shown, the porous element 30 may include:

[0074] At least two or more porous layers are stacked or laminated from the first side 310 to the second side 320.

[0075] In some embodiments, the porous layer is rigid.

[0076] In some embodiments, the porous layer is prepared by forming an ordered plurality of liquid-conducting pores in a dense substrate through mechanical drilling, laser drilling, electrochemical drilling, or the like. In some embodiments, the dense substrate may include at least one of a dense glass sheet, a dense ceramic sheet, a dense silicon sheet, a dense metal sheet, and a dense plastic sheet; wherein the porosity of the dense substrate is less than 5%.

[0077] In some embodiments, the porous layer is porous glass; for example, quartz glass, borosilicate glass, silicate glass, modified silicate glass, etc.

[0078] In some embodiments, a plurality of liquid guiding holes are arranged on the porous layer. The liquid guiding holes are arranged along a predetermined direction on the porous layer. The liquid guiding holes are arranged in an orderly manner on the porous layer. Specifically, the liquid guiding holes penetrate the porous layer along the thickness direction. In embodiments, the liquid guiding holes on the porous layer are arranged in an array or matrix, thereby making the porous layer generally have a honeycomb structure.

[0079] In some embodiments, the liquid guiding holes on the porous layer can be round holes, square holes, elliptical holes, polygonal holes, etc.

[0080] In some embodiments, the porous layer may have a thickness of 0.2 to 1 mm. In some specific embodiments, the porous layer may have a thickness of 0.2 to 0.5 mm; more specifically, the porous layer may have a thickness of 0.3 to 0.4 mm.

[0081] In some embodiments, at least two or more porous layers of the porous element 30 are securely connected to each other. Specifically, in some embodiments, a secure connection can be formed between any two adjacent porous layers in the porous element 30 by means of laser welding, anodic bonding, glass enamel bonding, high-temperature hot pressing fusion, etc. Thus, at least two or more porous layers in the porous element 30 are laminated together. In embodiments, each porous layer of the porous element 30 is inseparable or cannot be independently disassembled.

[0082] In some embodiments, the porous body element 30 may include approximately 2 to 10 porous layers. More specifically, the porous body element 30 may include 3 to 6 porous layers.

[0083] In some embodiments, in the porous element 30, the liquid guiding holes of two adjacent porous layers are aligned. Alternatively, in other embodiments, the liquid guiding holes of two adjacent liquid guiding layers are at least partially staggered.

[0084] according to Figures 3 to 7 In the illustrated embodiment, the liquid-conducting layer of the porous element 30 includes:

[0085] Porous layers 31, 32, and 33 are arranged in sequence. Porous layer 31 is close to and defines the first side 310, and porous layer 33 is close to and defines the second side 320.

[0086] exist Figures 3 to 7 In the illustrated embodiment, the porous layer 31 has a plurality of liquid guiding holes 311; the porous layer 32 has a plurality of liquid guiding holes 321; and the porous layer 33 has a plurality of liquid guiding holes 331. In some embodiments, the liquid guiding holes 311 define the first inlet of the liquid matrix of the liquid storage cavity 12 into the porous body element 30 at the port of the first side 310. Furthermore, the liquid matrix within the porous body element 30 is sequentially transferred via the liquid guiding holes 311, 321, and 331 to the heating element 40 attached to the second side 320 for heating and atomization.

[0087] exist Figures 3 to 7 In the illustrated embodiment, the liquid guiding holes of two adjacent porous layers are aligned and connected to each other. For example, the liquid guiding holes 311 of porous layer 31 and 321 of porous layer 32 are aligned and connected; and the liquid guiding holes 321 of porous layer 32 and 331 of porous layer 33 are aligned and connected. Alternatively, in some other alternative embodiments, the liquid guiding holes of two adjacent porous layers are partially staggered.

[0088] exist Figures 3 to 7In the illustrated embodiments, the liquid guiding holes 311 of porous layer 31, 321 of porous layer 32, and 331 of porous layer 33 extend substantially straight. In other embodiments, the liquid guiding holes 311 of porous layer 31, 321 of porous layer 32, or 331 of porous layer 33 are arranged at an angle.

[0089] exist Figures 3 to 7 In the illustrated embodiment, the cross-sectional area or diameter of the liquid-conducting holes on the porous layer varies. Alternatively, the liquid-conducting holes on the porous layer are tapered holes with varying cross-sectional areas or diameters. Specifically, the cross-sectional area or diameter of the liquid-conducting holes on the porous layer gradually decreases along the direction approaching the second side 320. For example, liquid-conducting holes 311 and / or 321 and / or 331 are tapered holes with gradually decreasing diameters along the direction approaching the second side 320.

[0090] In some embodiments, for fluid guide holes with a circular or substantially near-circular cross-section, the above diameter can directly characterize the diameter of the circular cross-section; for some fluid guide holes with non-circular cross-sections, the diameter can be the equivalent circular diameter or the equivalent diameter. Here, "equivalent diameter" is a fluid dynamics term referring to the diameter of a circular channel with the same hydraulic radius as the non-circular channel, for ease of analysis or measurement; similarly, the term "equivalent circular diameter" is a geometric parameter that equates a non-circular irregular object to the diameter of a circle with the same area, for ease of analysis or measurement.

[0091] exist Figures 3 to 7 In the illustrated embodiment, the liquid guiding holes on the porous layer have a first port facing the first side 310 and a second port facing the second side 320; wherein the area or diameter of the first port is larger than the area or diameter of the second port. For example, the diameter of the first port 3111 of the liquid guiding hole 311 facing the first side 310 is larger than the diameter of the second port 3112; the diameter of the first port 3211 of the liquid guiding hole 321 facing the first side 310 is larger than the diameter of the second port 3212; and the diameter of the first port 3311 of the liquid guiding hole 331 facing the first side 310 is larger than the diameter of the second port 3312.

[0092] In some optional embodiments, the diameter of the first port of the liquid guiding hole facing the first side 310 may be approximately between 0.04 and 0.2 mm; for example, the diameter of the first port 3111 / first port 3211 / first port 3311 may be approximately between 0.04 and 0.2 mm. In some optional embodiments, the diameter of the second port of the liquid guiding hole facing the second side 320 may be approximately between 0.02 and 0.1 mm; for example, the diameter of the second port 3112 / second port 3212 / second port 3312 may be approximately between 0.02 and 0.1 mm.

[0093] In some embodiments, the first ports of the plurality of liquid guiding holes are arranged non-discretely or non-isolatedly on the surface of the porous layer facing the first side 310. Alternatively, in some embodiments, the first ports of the plurality of liquid guiding holes are connected on the surface of the porous layer facing the first side 310. Specifically, for example in… Figures 3 to 7 As shown, any two adjacent liquid guiding holes 311 partially overlap at their first port 3111, thereby forming a gap 312 in the partition wall between them, thus connecting the first ports 3111 of the two adjacent liquid guiding holes 311 through the gap 312. Similarly, any two adjacent liquid guiding holes 321 partially overlap at their first port 3211, thereby forming a gap 322 in the partition wall between them, thus connecting the first ports 3211 of the two adjacent liquid guiding holes 321 through the gap 322. And again, any two adjacent liquid guiding holes 331 partially overlap at their first port 3311, thereby forming a gap 332 in the partition wall between them, thus connecting the first ports 3311 of the two adjacent liquid guiding holes 331 through the gap 332.

[0094] In some embodiments, the notches connecting the first ports of two adjacent liquid guiding holes, such as notches 312 / 322 / 332, are formed by the partial interference or overlap of the first ports of the two adjacent liquid guiding holes. Several first ports form a cross-linked network on the surface of the porous layer through interference or overlap. For example, in... Figure 8 The diagram shows a schematic representation of the first ports 3211 of a plurality of liquid guiding holes 321 partially interfering with or overlapping each other on the surface of the porous layer 32 facing the first side 310. According to... Figure 8 As shown, the first ports 3211 of any two adjacent liquid guiding holes 321 partially interfere to form an interference region S1, thereby connecting the first ports 3211 of the adjacent liquid guiding holes 321. Furthermore, during fabrication, a notch 322 is formed by the interference or overlap of portions of adjacent liquid guiding holes 321 at their first ports 3211. And according to... Figure 8 As shown, the distance d1 between the geometric centers of the first ports 3211 of adjacent liquid guiding holes 321 is less than the diameter of the first ports 3211 of the liquid guiding holes 321.

[0095] In some embodiments, for the first port 3211 of a circular or substantially circular liquid guide hole 321, the geometric center is the center of the first port 3211; for a non-circular first port 3211, such as an ellipse, polygon, or other geometric shapes, the geometric center may be the center of their inscribed circle or circumscribed circle, etc.

[0096] In this embodiment, the second ports of a plurality of liquid guiding holes are arranged discretely or at intervals on the surface of the porous layer facing the second side 320, and are therefore spaced apart from each other and not interconnected. For example, the second ports 3112 of liquid guiding holes 311 facing the second side 320, the second ports 3212 of liquid guiding holes 321 facing the second side 320, and the second ports 3312 of liquid guiding holes 331 facing the second side 320 are all arranged at intervals.

[0097] In this embodiment, the surfaces of the porous layers, such as porous layers 31, 32, and 33, facing the first side 310 are rough surfaces. And the surfaces of the porous layers, such as porous layers 31, 32, and 33, facing the second side 320 are flat surfaces.

[0098] according to Figures 3 to 7 As shown, liquid storage channels are also formed between two adjacent porous layers; specifically, the liquid storage channels are defined by the surface of one porous layer and the surface of another porous layer. For example, in Figure 6 and Figure 7 As shown, after the surfaces of porous layer 31 and porous layer 32 come into contact and bond, the gaps 322 between the first ports 3211 of the liquid guiding holes 321 on the surface of porous layer 32 connect to form a liquid storage channel for adsorption and transfer, as shown. Figure 6 and Figure 7 As shown by the middle arrow R3. For example, after the surface of porous layer 32 and the surface of porous layer 33 come into contact and bond, the gaps 332 between the liquid guiding holes 321 on the surface of porous layer 32 are connected to form a liquid storage channel for adsorption and transfer.

[0099] exist Figures 3 to 7 In the illustrated embodiment, the liquid storage channel is a cross-linked mesh. More specifically, the liquid storage channel is a cross-linked mesh in both the length and width directions of the porous element 30. In use, the liquid storage channel prevents the liquid matrix from being blocked during transfer between adjacent liquid guide holes due to air bubbles, and also prevents or eliminates insufficient liquid supply caused by aerosols generated during atomization pushing the liquid matrix backward.

[0100] It should be noted that the preferred embodiments of this application are given in the specification and accompanying drawings, but are not limited to the embodiments described in this specification. Furthermore, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An electronic atomizing device, characterized in that, include: A liquid storage chamber is used to store a liquid matrix; A porous element having a first side and a second side facing away from each other, wherein the first side is in communication with the liquid storage cavity to receive a liquid matrix; the porous element includes at least two porous layers stacked from the first side to the second side; the porous layers have a plurality of liquid guiding holes arranged in a predetermined direction for transferring the liquid matrix from the first side to the second side. A heating element, at least partially formed or incorporated into the second side of the porous element, is used to heat the liquid matrix to generate an aerosol; The porous layer has a first surface facing the first side and a second surface facing the second side; the liquid guiding hole has a first port located on the first surface and a second port located on the second surface, the diameter of the first port being larger than the diameter of the second port; two adjacent first ports partially overlap or interfere with each other so that a plurality of first ports form a connection on the first surface, thereby forming a cross-linked network of liquid storage channels between two adjacent porous layers.

2. The electronic atomizing device as described in claim 1, characterized in that, The liquid guiding hole is a tapered hole.

3. The electronic atomizing device as described in claim 1 or 2, characterized in that, The diameter of the first port is between 0.04 and 0.2 mm; And / or, the diameter of the second port is between 0.02 and 0.1 mm.

4. The electronic atomizing device as described in claim 1 or 2, characterized in that, The second ports of the plurality of liquid guiding holes are arranged discretely or at intervals on the second surface.

5. The electronic atomizing device as described in claim 1 or 2, characterized in that, There is a gap in the partition wall between two adjacent first ports on the first surface, thereby connecting the two adjacent first ports.

6. The electronic atomizing device as described in claim 1 or 2, characterized in that, The first surface is a rough surface; and / or the second surface is a flat plane.

7. The electronic atomizing device as described in claim 1 or 2, characterized in that, The porous layer has a thickness of 0.2 to 1 mm; And / or, the porous element comprises 2 to 10 porous layers arranged in a stacked manner.

8. The electronic atomizing device as described in claim 1 or 2, characterized in that, The porous layer has a plurality of liquid guiding holes arranged in an array, thereby giving the porous layer a honeycomb structure.

9. The electronic atomizing device as described in claim 1 or 2, characterized in that, The distance between adjacent first ports on the first surface is less than the diameter of the first port.

10. A porous element for an electronic atomizing device, characterized in that, The porous element has a first side and a second side facing away from each other; the porous element includes: At least two porous layers are stacked from the first side to the second side; the porous layers have a plurality of liquid guiding holes arranged in a predetermined direction for transferring the liquid matrix from the first side to the second side; The porous layer has a first surface facing the first side and a second surface facing the second side; the liquid guiding hole has a first port located on the first surface and a second port located on the second surface, the diameter of the first port being larger than the diameter of the second port; two adjacent first ports partially overlap or interfere with each other so that a plurality of first ports form a connection on the first surface, thereby forming a cross-linked network of liquid storage channels between two adjacent porous layers.

11. A porous element for an electronic atomizing device, characterized in that, include: The first and second surfaces are opposite to each other; Several liquid guiding holes extend from the first surface to the second surface; The liquid guiding hole is configured as a tapered hole whose cross-sectional area or diameter gradually decreases along the direction close to the second surface; The liquid guiding hole has a first port located on the first surface and a second port located on the second surface, wherein the diameter of the first port is larger than the diameter of the second port; Two adjacent first ports partially overlap or interfere with each other, thereby forming a connected cross-linked network of several first ports on the first surface; the second ports are arranged discretely or at intervals on the second surface.

Images