Electronic atomization device and atomization assembly for electronic atomization device

Abstract

This application discloses an electronic atomizing device and an atomizing component for the electronic atomizing device; wherein the electronic atomizing device includes: a liquid storage chamber for storing a liquid matrix; a porous element having a first side in fluid communication with the liquid storage chamber and a second side away from the first side, and for transferring the liquid matrix from the first side to the second side; a heating element formed on the second side of the porous element, and for heating the liquid matrix; the heating element includes a first electrode portion and a second electrode portion spaced apart along the length direction, and at least two heating tracks connected in parallel between the first electrode portion and the second electrode portion; the at least two heating tracks extend straight along the length direction and are arranged spaced apart in the width direction. In the above electronic atomizing device, the heating element heats simultaneously in parallel through multiple straight heating tracks arranged at intervals, which is advantageous for reducing backflow generated during concentrated atomization and eliminating local dry burning.

Description

Technical Field

[0001] This application relates to the field of electronic atomization technology, and in particular to an electronic atomization device and an atomization component 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 may be tobacco or other non-tobacco products, which may or may not contain nicotine. As another example, aerosol-providing articles exist, such as so-called electronic atomizing devices. These devices typically contain a liquid that is heated to vaporize, thereby producing an inhalable aerosol. The liquid may contain nicotine and / or flavorings and / or aerosol-generating substances (e.g., glycerin). Known electronic atomizing devices adsorb or transfer liquid through a porous element and heat at least a portion of the liquid within the porous element to generate an aerosol by printing or depositing tortuous patterns or grid-shaped resistance heating traces on the porous element. 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 in fluid communication with the liquid storage cavity and a second side away from the first side, and for transferring a liquid matrix from the first side to the second side;

[0007] A heating element is formed or incorporated on the second side of the porous element and is used to heat a liquid matrix to generate an aerosol; the heating element includes a first electrode portion and a second electrode portion arranged at intervals along the length direction, and at least two or more heating tracks connected in parallel between the first electrode portion and the second electrode portion; the at least two or more heating tracks extend straight along the length direction of the heating element and are arranged at intervals along the width direction of the heating element.

[0008] In some embodiments, the width of the heating trajectory is smaller than the spacing between two adjacent heating trajectories.

[0009] In some embodiments, the width of the heating trajectory is between 0.15 mm and 0.4 mm;

[0010] And / or, the spacing between two adjacent heating tracks is between 0.2 mm and 0.5 mm.

[0011] In some embodiments, the width of the heating trajectory is substantially constant.

[0012] In some embodiments, the heating element includes 2 to 5 heating tracks.

[0013] In some embodiments, the initial resistance of the heating element is between 0.5Ω and 2.5Ω.

[0014] In some embodiments, the porous body element includes a plurality of porous portions arranged at intervals along the width direction; the porous portions are provided with a plurality of first liquid guiding channels extending from the first side to the second side for transferring a liquid matrix from the first side to the second side.

[0015] In some embodiments, the porous body element further includes at least two track support portions arranged at intervals along the width direction; the heating track is formed or incorporated into the track support portions and avoids the porous portions.

[0016] In some embodiments, the trajectory support portion is dense.

[0017] In some embodiments, the trajectory support portion and the porous portion are arranged alternately in the width direction of the porous body element.

[0018] In some embodiments, the first liquid channels are arranged in an array on the porous portion, thereby giving the porous portion a honeycomb structure.

[0019] In some embodiments, the diameter of the first liquid guiding channel is between 0.02 mm and 0.1 mm;

[0020] And / or, the spacing between adjacent first liquid channels is between 5µm and 40µm.

[0021] In some embodiments, it also includes:

[0022] Several second liquid guiding channels pass sequentially through the porous body element and the heating trajectory from the first side.

[0023] In some embodiments, the diameter of the second liquid guiding channel is smaller than the diameter of the first liquid guiding channel.

[0024] In some embodiments, the ratio of the diameter of the second liquid guiding channel to the width of the heating trajectory is less than 0.2.

[0025] In some embodiments, the diameter of the second liquid guiding channel is between 0.01 mm and 0.08 mm.

[0026] Another embodiment of this application provides an atomizing component for an electronic atomizing device, comprising:

[0027] A porous element having a first side and a second side facing away from each other;

[0028] A heating element is formed or incorporated into a second side of the porous element; the heating element includes a first electrode portion and a second electrode portion arranged at intervals along the length direction, and at least two or more heating tracks connected in parallel between the first electrode portion and the second electrode portion; the at least two or more heating tracks extend straight along the length direction of the heating element and are arranged at intervals along the width direction of the heating element.

[0029] In the above electronic atomizing device, the heating element is heated simultaneously in parallel through multiple straight heating tracks arranged at intervals, which is beneficial for reducing backflow generated during the concentrated atomization process and eliminating local dry burning. Attached Figure Description

[0030] 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.

[0031] Figure 1 This is a schematic diagram of an electronic atomizing device provided in one embodiment;

[0032] Figure 2 yes Figure 1 A schematic diagram of the structure of an embodiment of a central atomizer;

[0033] Figure 3 yes Figure 2 Another structural diagram of the atomizing component;

[0034] Figure 4 yes Figure 3 Another structural diagram of the atomizing component;

[0035] Figure 5 yes Figure 3 A schematic diagram of the second side surface of a porous element;

[0036] Figure 6 This is a schematic diagram of the atomizing component from one perspective of yet another embodiment;

[0037] Figure 7 This is a schematic diagram of the atomizing component from one perspective of yet another embodiment;

[0038] Figure 8yes Figure 7 A schematic diagram of the porous element of the atomizing component from one perspective;

[0039] Figure 9 A schematic diagram of a comparative atomizing component is shown. Detailed Implementation

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] exist Figure 1 In 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 1In 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.

[0045] 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.

[0046] In an embodiment, 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.

[0047] 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.

[0048] Figure 2 It shows Figure 1 A schematic diagram of one embodiment of the atomizer 100 includes:

[0049] 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.

[0050] 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 2 In 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.

[0051] 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.

[0052] 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:

[0053] 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.

[0054] 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.

[0055] See Figure 2 In the embodiment shown, the atomizer 100 further includes:

[0056] 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;

[0057] The flexible 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.

[0058] 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 first side 310 of the porous element 30 is arranged towards the liquid reservoir 12 and is in fluid communication with the liquid reservoir 12, for example in... Figure 2 The first side 310, indicated by the middle arrow R1, is in fluid communication with the liquid storage chamber 12 through the liquid 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 surface of the atomizing surface / the second side 320 of the porous element 30.

[0059] according to Figure 2As 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.

[0060] 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.

[0061] 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.

[0062] exist Figures 2 to 3 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.

[0063] See Figures 2 to 4As shown, the rigid porous element 30 includes a plurality of first liquid guiding channels 311 arranged on a dense matrix material; the plurality of first liquid guiding channels 311 extend straight along the thickness direction of the porous element 30. The first liquid guiding channels 311 penetrate the porous element 30 along the thickness direction. The first liquid guiding channels 311 penetrate or extend from the surface of the first side 310 to the surface of the second side 320. In use, the liquid matrix is ​​delivered from the surface of the first side 310 to the surface of the second side 320 by capillary wetting through the first liquid guiding channels 311 and then heated and atomized by the heating element 40. In this embodiment, the plurality of first liquid guiding channels 311 are arranged in an ordered manner within the porous element 30. The extension of the plurality of first liquid guiding channels 311 is oriented in a predetermined direction, rather than randomly. In an embodiment, a plurality of first liquid channels 311 are arranged in an array within the porous element 30; and in an embodiment, the plurality of first liquid channels 311 are capable of transferring a liquid matrix from the surface of the first side 310 to the surface of the second side 320 at a predetermined rate.

[0064] In some embodiments, the first liquid channel 311 has a generally circular cross-sectional shape. Alternatively, in other embodiments, the first liquid channel 311 may have a cross-sectional shape such as elliptical, semi-circular, trapezoidal, star-shaped, petal-shaped, triangular, quadrilateral, polygonal, or other irregular shapes.

[0065] In some embodiments, the diameter of the first liquid guiding channel 311 is between 0.02 mm and 0.1 mm. In some embodiments, for a first liquid guiding channel 311 with a circular or substantially near-circular cross-section, this diameter can directly characterize the diameter of the circular cross-section; while for some first liquid guiding channels 311 with non-circular cross-sections, such as those with elliptical or polygonal cross-sections, this diameter can be characterized as an equivalent circular diameter. The term "equivalent circular diameter" is a geometric parameter that equates a non-circular shape to the diameter of a circle with the same area, for ease of analysis or measurement.

[0066] In some embodiments, the spacing between adjacent first liquid guiding channels 311 is 5µm to 40µm.

[0067] In some embodiments, the porous element 30 is prepared by forming a plurality of first liquid-conducting channels 311 on a dense substrate material by means of laser drilling, mechanical drilling, or etching. In some embodiments, the dense substrate material may be prepared from at least one of dense glass, ceramic, carbon, metal, or high-temperature resistant polymer plastic; wherein the high-temperature resistant polymer plastic may include at least one of polyamide, polysulfone, polyphenylene sulfide, polyetherimide, polyimide, polyaryletherketone, polyarylate, polysulfone, liquid crystal polymer, polytetrafluoroethylene, polyvinylidene fluoride, etc. In some embodiments, the dense substrate material may be produced by means of hot die casting, dry pressing, casting, or chemical synthesis.

[0068] In one embodiment, the cross-sectional area and / or diameter of the first liquid guiding channel 311 is constant. Alternatively, in some other embodiments, the cross-sectional area and / or diameter of the first liquid guiding channel 311 varies. For example, in some embodiments, the cross-sectional area and / or diameter of the first liquid guiding channel 311 is a tapered orifice with varying cross-sectional area or diameter. Specifically, the cross-sectional area or diameter of the first liquid guiding channel 311 gradually decreases along the direction approaching the second side 320.

[0069] In one embodiment, the ports of a plurality of first liquid guiding channels 311 on the first side 310 are arranged discretely or isolatedly on the surface of the first side 310. In another embodiment, the ports of a plurality of first liquid guiding channels 311 on the second side 320 are arranged discretely or isolatedly on the surface of the second side 320. Alternatively, in some variations, the ports of a plurality of first liquid guiding channels 311 on the first side 310 are arranged non-discretely or non-isolatedly on the surface of the first side 310; for example, in some embodiments, the ports of a plurality of first liquid guiding channels 311 on the first side 310 are interconnected on the surface of the first side 310. Specifically, for example, a portion of the ports of any two adjacent first liquid guiding channels 311 on the first side 310 overlaps, thereby connecting the ports of two adjacent first liquid guiding channels 311 on the first side 310.

[0070] In some embodiments, the thickness of the porous element 30 is 0.1 mm to 3 mm; more preferably, the thickness of the porous element 30 is 0.2 mm to 2 mm. The length of the porous element 30 is 6 mm to 12 mm; and the width of the porous element 30 is approximately 2.5 mm to 5 mm. In some embodiments, the arrangement of a plurality of first liquid guiding channels 311 within the porous element 30 results in the porous element 30 having a honeycomb structure.

[0071] Alternatively, in some other variations, the porous element 30 may include conventional porous materials, such as rigid foam metal, porous ceramics, porous glass, etc., formed by sintering a mixture of raw materials of the matrix with a pore-forming agent; and the porous element 30 may contain a large number of disordered micropores arranged inside the porous element 30 defined by the sintering of the pore-forming agent to absorb and transfer the liquid matrix.

[0072] Alternatively, in some other variations, the porous element 30 may include a plurality of ordered first liquid guiding channels 311 formed by further mechanical drilling or laser drilling on a porous material having a plurality of disordered micropores inside; the porous element 30 includes both a plurality of ordered first liquid guiding channels 311 and a plurality of disordered micropores inside.

[0073] In some embodiments, the heating element 40 is made of a resistive material, such as a composite material of a metal, metal alloy, graphite, carbon, conductive ceramic, or other ceramic and metal materials with appropriate impedance. Suitable metal or alloy materials include at least one of nickel, cobalt, zirconium, titanium, nickel alloys, cobalt alloys, zirconium alloys, titanium alloys, nickel-chromium alloys, nickel-iron alloys, iron-chromium alloys, iron-chromium-aluminum alloys, iron-manganese-aluminum based alloys, or stainless steel.

[0074] In some embodiments, the heating element 40 is formed on the surface of the second side 320 of the porous element 30 by deposition, spraying, or printing. For example, in some embodiments, the heating element 40 is formed on the surface of the second side 320 of the porous element 30 by physical vapor deposition or chemical vapor deposition.

[0075] according to Figures 2 to 4 As shown, the heating element 40 includes:

[0076] A first electrode portion 41 and a second electrode portion 42 are arranged at intervals along the length direction, and at least two heating tracks 43 extend between the first electrode portion 41 and the second electrode portion 42. The at least two heating tracks 43 are 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 at least two heating tracks 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.

[0077] according to Figures 2 to 4 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, at least two heating tracks 43 define the heating region of the heating element 40.

[0078] 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.

[0079] according to Figures 2 to 4 As shown, at least two heating tracks 43 extend from the first electrode portion 41 to the second electrode portion 42. In an embodiment, at least two heating tracks 43 extend in a straight line; specifically, at least two heating tracks 43 are arranged to extend along the length direction of the porous element 30. In an embodiment, the heating tracks 43 extend without bending or meandering.

[0080] In the embodiment, at least two or more heating trajectories 43 are not intersecting or connected to each other.

[0081] In one embodiment, the first electrode portion 41 and / or the second electrode portion 42 extend from one side to the other in the width direction of the porous element 30. Also in one embodiment, at least two or more heating tracks 43 are arranged at intervals along the width direction of the porous element 30.

[0082] In one embodiment, at least two or more heating tracks 43 are connected in parallel between the first electrode portion 41 and the second electrode portion 42. In another embodiment, at least two or more heating tracks 43 operate simultaneously in parallel.

[0083] In some embodiments, the length d21 of each heating track 43 may be between 4 mm and 10 mm. In some embodiments, the thickness of each heating track 43 may be between 0.2 µm and 10 µm. In some embodiments, the width of the heating track 43 may be between 0.05 mm and 0.4 mm; for example, in... Figure 4 In the specific embodiment shown, the width d22 of the heating track 43 is 0.05mm to 0.15mm. Furthermore, in this embodiment, by having the above thickness and width, the heating track 43 allows the heating element 40 to have an initial resistance value of 0.5Ω to 2.5Ω when at least two or more heating tracks 43 are connected in parallel; wherein, the "initial resistance value" is the resistance value of the heating element 40 made of resistive metal or alloy at room temperature. And when the heating element 40 is powered by a supply power of 4 to 10W during operation, the heating track 43 can have a resistance of 6 to 60W / mm². 2 The power distribution density.

[0084] In some preferred embodiments, the number of heating traces 43 connected in parallel between the first electrode portion 41 and the second electrode portion 42 may be between 2 and 5. This is advantageous for maintaining the desired initial resistance value of the heating element 40.

[0085] In one embodiment, the width d22 of each heating trajectory 43 is constant over its length. Alternatively, in some other embodiments, the width d22 of at least one heating trajectory 43 varies over its length. For example, in an optional embodiment, the width d22 of at least one heating trajectory 43 gradually decreases or increases over its length. As another example, at least one heating trajectory 43 includes a first segment and a second segment arranged sequentially along its length; wherein the first segment may connect to a first electrode portion 41, and the second segment may connect to a second electrode portion 42; the width of the first segment gradually increases or decreases in the direction away from the first electrode portion 41, and the width of the second segment gradually increases or decreases in the direction away from the second electrode portion 42.

[0086] In some embodiments, the extension length of the heating trajectory 43 is more than 5 times the width d22 of the heating trajectory 43. More preferably, the extension length of the heating trajectory 43 is more than 8 times the width d22 of the heating trajectory 43. More preferably, the extension length of the heating trajectory 43 is more than 10 times the width d22 of the heating trajectory 43.

[0087] In some embodiments, the width d22 of the heating trajectory 43 is smaller than the distance d31 between two adjacent heating trajectories 43. In some embodiments, the ratio of the width d22 of the heating trajectory 43 to the distance d31 between two adjacent heating trajectories 43 is less than 1:1. In a more preferred embodiment, the ratio of the width d22 of the heating trajectory 43 to the distance d31 between two adjacent heating trajectories 43 is less than 0.8:1. In some embodiments, the distance d31 between two adjacent heating trajectories 43 may be approximately between 0.2 mm and 0.5 mm.

[0088] according to Figures 2 to 5 As shown, the first liquid guiding channel 311 is arranged on the porous body element 30 to avoid the heating element 40; more specifically, the first liquid guiding channel 311 avoids the heating trajectory 43.

[0089] exist Figures 2 to 5In the illustrated embodiment, the porous element 30 includes a plurality of spaced porous portions 312; first liquid guiding channels 311 are formed or arranged in the porous portions 312. The first liquid guiding channels 311 on each porous portion 312 are arranged in an array, thereby making the porous portion 312 flowable to a liquid matrix. The first liquid guiding channels 311 on each porous portion 312 are arranged in an array, thereby giving the porous portion 312 a honeycomb structure. In the embodiment, the first liquid guiding channels 311 are not completely distributed within the porous element 30; and the first liquid guiding channels 311 are arranged only within the porous portions 312 within the porous element 30.

[0090] In one embodiment, the heating trajectory 43 avoids the porous portion 312. In another embodiment, the porous portion 312 and the heating trajectory 43 are arranged alternately in the width direction of the porous body element 30.

[0091] exist Figures 2 to 5 In the illustrated embodiment, the portion of the porous element 30 located between adjacent porous portions 312 is dense. Alternatively, the porous element 30 has a plurality of dense track support portions 313; each track support portion 313 is formed or defined between two adjacent porous portions 312; the dense track support portions 313 and the porous portions 312 are arranged intersectingly. The heating track 43 of the heating element 40 is coupled to the track support portions 313.

[0092] exist Figures 2 to 5 In the illustrated embodiment, the surface of the second side 320 of the porous element 30 includes:

[0093] A first electrode arrangement region 321 and a second electrode arrangement region 322 are spaced apart along the length direction. A first electrode portion 41 of the heating element 40 is attached to the first electrode arrangement region 321, and a second electrode portion 42 of the heating element 40 is attached to the second electrode arrangement region 322. In an embodiment, a plurality of porous portions 312 are located between the first electrode arrangement region 321 and the second electrode arrangement region 322. The first electrode arrangement region 321 and the second electrode arrangement region 322 are dense.

[0094] In an embodiment, the porous element 30 may further include a first electrode support portion and a second electrode support portion spaced apart in the length direction; a first electrode arrangement region 321 is defined by the first electrode support portion, and a second electrode arrangement region 322 is defined by the second electrode support portion. A first electrode portion 41 of the heating element 40 is formed or incorporated into and supported by the first electrode support portion, and a second electrode portion 42 of the heating element 40 is formed or incorporated into and supported by the second electrode support portion. The porous portion 312 and the trajectory support portion 313 of the porous element 30 are located between the first electrode support portion and the second electrode support portion. Furthermore, the first electrode support portion and / or the second electrode support portion are dense.

[0095] In an embodiment, the fabrication of the atomizing assembly, including the porous body element 30 and the heating element 40, may include:

[0096] S10, a dense precursor, such as dense glass, for the porous element 30 is obtained, and a heating element 40 is formed on the surface of the second side 320 of the dense precursor of the porous element 30 by deposition, spraying, or printing in a predetermined shape; the heating element 40 may include a first electrode portion 41, a second electrode portion 42, and at least two or more heating tracks 43.

[0097] S20, a pore is formed on a predetermined portion of the dense precursor of the porous element 30 by laser drilling or etching to form a first liquid channel 311.

[0098] In the preparation process, the heating element 40 is first formed on a dense precursor of the porous element 30, and then the dense precursor of the porous element 30 is porousened. In the embodiments, the heating element 40 formed by deposition, spraying, or printing is dense.

[0099] In an embodiment, the heating element 40, which is formed on the surface of the second side 320 of the porous element 30 by deposition, spraying, or printing, may protrude relative to the surface of the second side 320 of the porous element 30.

[0100] Alternatively, in one embodiment, the dense precursor of the porous element 30 has grooves arranged on the surface of the second side 320, the shape of which is the same as that of the heating element 40. The depth of the grooves can be greater than or equal to the thickness of the heating element 40, for example, the depth of the grooves can be between 0.2µm and 200µm. In fabrication, the heating element 40 is deposited or formed within the grooves on the surface of the second side 320. More preferably, the depth of the grooves can be substantially equal to the thickness of the heating element 40, for example, approximately 0.2µm to 10µm; then, when the heating element 40 is deposited or formed within the grooves on the surface of the second side 320, the heating element 40 is substantially flush with the surface of the second side 320.

[0101] In some embodiments, the heating element 40 may have only one coating or plating formed by the above resistive material deposition, spraying, or printing. In some embodiments, the heating element 40 may include at least two or more coatings or platings.

[0102] In some embodiments, the heating element 40 includes a transition layer and a heating layer formed sequentially. The transition layer and the heating layer are made of different materials to provide different functions. For example, the coefficient of thermal expansion of the transition layer material is less than that of the heating layer material. In embodiments, the low coefficient of thermal expansion of the transition layer is advantageous for reducing or suppressing deformation of the heating element 40 during use due to thermal cycling and for providing stress compensation, preventing the heating element 40 from detaching from the surface of the second side 320. Alternatively, the surface adhesion between the transition layer and the porous element 30 is greater than that between the heating layer and the porous element 30, which is advantageous for improving the bonding between the heating element 40 and the porous element 30.

[0103] In some embodiments, the transition layer of the heating element 40 is made of one or more of the following substances: chromium, titanium, zirconium, tungsten, chromium, niobium, tantalum, molybdenum, vanadium, etc. Alternatively, in other embodiments, the transition layer is made of one or more oxides of silicon, titanium, zirconium, iron, nickel, aluminum, tungsten, chromium, niobium, tantalum, molybdenum, vanadium, gallium, samarium, zinc, tin, magnesium, etc. In some embodiments, the transition layer is made of titanium, zirconium, niobium, tantalum, molybdenum, iron, or alloys thereof, and metal oxides formed by the oxidation of such alloys. Alternatively, in other embodiments, the transition layer is made of carbides such as boron carbide, silicon carbide, tungsten carbide, titanium carbide, zirconium carbide, hafnium carbide, tantalum carbide, titanium carbide nitride, etc., 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), etc.

[0104] In some embodiments, the thickness of the transition layer of the heating element 40 is between 50 nm and 2.0 µm.

[0105] In some embodiments, the heating layer of the heating element 40 is made of one or more of the following materials: gold, platinum, tantalum, zirconium, niobium, molybdenum, tungsten, tantalum nitride, stainless steel, tungsten carbide, titanium nitride, gold-silver alloy, and TiAlN. In some embodiments, the thickness of the heating layer of the heating element 40 is 0.5µm to 5µm.

[0106] Alternatively, in some embodiments, the heating element 40 may further include a protective layer disposed outside the heating layer to provide protection for the heating layer. In some embodiments, 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, silicon nitride, and stainless steel.

[0107] or Figure 6 A schematic diagram of an atomizing assembly according to yet another embodiment is shown; in this embodiment, the atomizing assembly includes:

[0108] The porous element 30a has a first side and a second side 320a facing away from each other;

[0109] Heating element 40a is formed or arranged on the surface of the second side 320a of porous element 30a.

[0110] In this embodiment, the heating element 40a includes a first electrode portion 41a and a second electrode portion 42a arranged at intervals along the length direction, and at least two or more heating tracks 43a extending between the first electrode portion 41a and the second electrode portion 42a.

[0111] according to Figure 6 As shown, the heating trajectory 43a has an increased width d23; in this embodiment, the width d23 of the heating trajectory 43a is greater than... Figure 4 The width d22 of the heating trajectory 43. Figure 6 In a specific embodiment, the width d23 of the heating trajectory 43a can be between 0.15 and 0.4 mm.

[0112] exist Figure 6 In the illustrated embodiment, a first liquid guiding channel 311a is arranged on the porous element 30a, extending from a first side 310a to a second side 320a. Furthermore, the first liquid guiding channel 311a is arranged to avoid the heating trajectory 43a. The first liquid guiding channel 311a can be arranged on the porous portion of the porous element 30a.

[0113] exist Figure 6 In the embodiment shown, the atomizing component further includes a plurality of second liquid guiding channels 314a that pass through the trajectory support portion of the porous body element 30a and the heating trajectory 43a in sequence; the second liquid guiding channels 314a are used to directly provide liquid matrix transfer to the central position within the widened heating trajectory 43a to prevent local dry burning at the central position of the heating trajectory 43a.

[0114] In some embodiments, the ratio of the diameter of the second liquid guiding channel 314a to the width d23 of the heating trajectory 43a is less than 0.2, so that the heating trajectory 43a can still have a high degree of continuity.

[0115] In some embodiments, the diameter of the second liquid guiding channel 314a is smaller than the diameter of the first liquid guiding channel 311a. In some embodiments, the diameter of the second liquid guiding channel 314a may be between 0.01 mm and 0.08 mm. In some embodiments, the distance between adjacent second liquid guiding channels 314a is greater than the distance between adjacent first liquid guiding channels 311a.

[0116] according to Figure 6 As shown, the distribution density of the second liquid guiding channel 314a is less than the distribution density of the first liquid guiding channel 311a. The number of second liquid guiding channels 314a per unit area is less than the number of first liquid guiding channels 311a per unit area.

[0117] exist Figure 6 As shown, each heating trajectory 43a has only one row of second liquid guiding channels 314a arranged at intervals along the length direction. Each porous portion of the porous body element 30a may have at least two or more rows of first liquid guiding channels 311a arranged at intervals along the length direction. The number of rows of second liquid guiding channels 314a penetrating each heating trajectory 43a is less than the number of rows of first liquid guiding channels 311a in each porous portion of the porous body element 30a.

[0118] Figure 7 and Figure 8 A schematic diagram of an atomizing assembly according to yet another embodiment is shown, in which the atomizing assembly includes:

[0119] The porous element 30b includes a first side and a second side 320b facing away from each other;

[0120] Heating element 40b is formed or arranged on the surface of the second side 320b of porous element 30b.

[0121] In this embodiment, the heating element 40b includes a plurality of heating tracks 43b connected between the first electrode portion 41b and the second electrode portion 42b. Furthermore, in this embodiment, the heating tracks 43b have a smaller width d24, thereby allowing the heating element 40b to have a greater number of heating tracks 43b. For example, in... Figure 7 and Figure 8 In the embodiment shown, the heating element 40b has five parallel heating tracks 43b.

[0122] exist Figure 7 and Figure 8 In the illustrated embodiment, the porous element 30b includes a plurality of porous portions 312b and at least two trajectory support portions 313b; the plurality of porous portions 312b and the plurality of trajectory support portions 313b are arranged alternately across the width of the porous element 30b. A first liquid guiding channel 311b is arranged on the porous portion 312b; and the trajectory support portions 313b are dense.

[0123] exist Figure 7 and Figure 8In the illustrated embodiment, the width d32 of the porous portion 312b located at the width edge of the porous body element 30b is greater than the width d33 of the porous portion 312b located between adjacent track support portions 313b. For example, in some optional embodiments, the width d32 of the porous portion 312b located at the width edge of the porous body element 30b may be approximately between 0.3 mm and 0.5 mm; the width d33 of the porous portion 312b located between adjacent track support portions 313b may be approximately between 0.2 mm and 0.4 mm.

[0124] In the embodiment, the liquid matrix is ​​mainly transferred to the surface of the second side 320 / 320a / 320b via the first liquid guiding channel 311 / 311a / 311b, and then driven by tension and fluidity to flow to the heating trajectory 43 / 43a / 43b to be atomized. On the one hand, it can reduce the back gas generated by concentrated atomization, and on the other hand, the multiple heating trajectories 43 / 43a / 43b can relatively disperse the heat, thereby reducing the heat accumulation in the center of the atomized surface, thus eliminating local dry burning in the atomization process from multiple aspects.

[0125] For example, the following shows the adoption Figure 4 Example 1 of the atomizing component shown. Figure 6 The atomizing component shown in Embodiment 2, and Figure 9 The atomizing component shown is used as a comparative example 1 to compare the room temperature resistance value R0 before testing and the room temperature resistance value R20 / Ω after 20 dry-burning tests without a liquid matrix, powered by different constant power P. Figure 9 In the atomizing assembly of Comparative Example 1, the porous portion of the porous element is continuously located in the center, and the liquid guiding channels are arranged in an array within the porous portion. The heating element is a rectangular metal film formed by vapor deposition on the second side surface of the porous element. The size and material of the porous element, the material and deposition thickness of the heating element, etc., are the same as in Examples 1 and 2. The width of the heating element in Comparative Example 1 is the same as the width of the electrode portion in Examples 1 and 2. Furthermore, the dry-burning test of 20 cycles was performed by continuously repeating the process of heating the heating element for 3 seconds each time and then cooling it to room temperature.

[0126] In the table above, the total area of ​​the heating portion in Examples 1 and 2 is the sum of the areas of the multiple heating trajectories 43 / 43b; the total area of ​​the heating portion in Comparative Example 1 refers to the area of ​​the heating element located in the porous portion (excluding the area of ​​the port of the liquid guiding channel).

[0127] According to the test results in the table above, the resistance values ​​of the atomizing components in Examples 1 and 2 remained almost unchanged after 20 dry-burning cycles at various constant power levels. The heating elements did not suffer local damage during heating, and their stability and service life were relatively good. However, the resistance value of the atomizing component in Comparative Example 1 remained almost unchanged after 20 dry-burning cycles at a relatively low constant power of 6W or below. But after 20 dry-burning cycles at a relatively high constant power of 7W, the resistance value increased significantly. After 20 dry-burning cycles at a constant power of 8W or above, the resistance value became unmeasurable, and the heating elements suffered local damage such as cracks or detachment.

[0128] 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 in fluid communication with the liquid storage cavity and a second side away from the first side, and for transferring a liquid matrix from the first side to the second side; A heating element is formed or incorporated on the second side of the porous element and is used to heat a liquid matrix to generate an aerosol; the heating element includes a first electrode portion and a second electrode portion arranged at intervals along the length direction, and at least two heating tracks connected in parallel between the first electrode portion and the second electrode portion; the at least two heating tracks extend straight along the length direction of the heating element and are arranged at intervals along the width direction of the heating element.

2. The electronic atomizing device as described in claim 1, characterized in that, The width of the heating trajectory is less than the distance between two adjacent heating trajectories.

3. The electronic atomizing device as described in claim 1 or 2, characterized in that, The width of the heating trajectory is between 0.15 mm and 0.4 mm; And / or, the spacing between two adjacent heating tracks is between 0.2 mm and 0.5 mm.

4. The electronic atomizing device as described in claim 1 or 2, characterized in that, The width of the heating trajectory is essentially constant.

5. The electronic atomizing device as described in claim 1 or 2, characterized in that, The heating element includes 2 to 5 heating tracks.

6. The electronic atomizing device as described in claim 1 or 2, characterized in that, The initial resistance of the heating element is between 0.5Ω and 2.5Ω.

7. The electronic atomizing device as described in claim 1 or 2, characterized in that, The porous element includes a plurality of porous portions arranged at intervals along its width; the porous portions are provided with a plurality of first liquid guiding channels extending from the first side to the second side for transferring a liquid matrix from the first side to the second side.

8. The electronic atomizing device as described in claim 7, characterized in that, The porous body element further includes at least two track support portions arranged at intervals along the width direction; the heating track is formed or incorporated into the track support portions and avoids the porous portions.

9. The electronic atomizing device as described in claim 8, characterized in that, The trajectory support portion is dense.

10. The electronic atomizing device as described in claim 8, characterized in that, The trajectory support portion and the porous portion are arranged alternately in the width direction of the porous body element.

11. The electronic atomizing device as described in claim 8, characterized in that, The first liquid guiding channels are arranged in an array on the porous portion, thereby making the porous portion have a honeycomb structure.

12. The electronic atomizing device as described in claim 11, characterized in that, The diameter of the first liquid guiding channel is between 0.02 mm and 0.1 mm; And / or, the spacing between adjacent first liquid guiding channels is between 5 μm and 40 μm.

13. The electronic atomizing device as described in claim 7, characterized in that, Also includes: Several second liquid guiding channels pass sequentially through the porous body element and the heating trajectory from the first side.

14. The electronic atomizing device as described in claim 13, characterized in that, The diameter of the second liquid guiding channel is smaller than the diameter of the first liquid guiding channel.

15. The electronic atomizing device as described in claim 13, characterized in that, The ratio of the diameter of the second liquid guiding channel to the width of the heating trajectory is less than 0.

2.

16. The electronic atomizing device as described in claim 13, characterized in that, The diameter of the second liquid guiding channel is between 0.01 mm and 0.08 mm.

17. An atomizing component for an electronic atomizing device, characterized in that, include: A porous element having a first side and a second side facing away from each other; A heating element is formed or incorporated into a second side of the porous element; the heating element includes a first electrode portion and a second electrode portion arranged at intervals along the length direction, and at least two heating tracks connected in parallel between the first electrode portion and the second electrode portion; the at least two heating tracks extend straight along the length direction of the heating element and are arranged at intervals along the width direction of the heating element.

Images