Patent Application
20230363455
This application relates to the field of vaporization technologies, and in particular, to a heating body, a vaporizer, and an electronic vaporization device.
An electronic vaporization device is formed by components such as a heating body, a battery, and a control circuit. The heating body is a core component of the electronic vaporization device, and characteristics thereof decide a vaporization effect and use experience of the electronic vaporization device.
As technologies advance, requirements of a user on the vaporization effect of the electronic vaporization device become increasingly high. To meet the requirements of the user, a porous heating body adopting a dense substrate such as glass is provided. However, the heat conduction efficiency of a dense substrate provided with run-through holes is relatively poor when compared with a porous substrate provided with disordered through holes (such as porous ceramic), which affects the vaporization efficiency.
This application provides a heating body with a dense substrate, a vaporizer including the heating body, and an electronic vaporization device, to improve the vaporization efficiency.
To resolve the foregoing technical problem, a first technical solution provided in this application is to provide a heating body, applicable to an electronic vaporization device and configured to heat and vaporize an aerosol-generation substrate, the heating body including a dense substrate, where the dense substrate includes a liquid absorbing surface and a vaporization surface arranged opposite to each other; a plurality of micropores are provided on the dense substrate, and the plurality of micropores run through the liquid absorbing surface and the vaporization surface; and
In an implementation, the vaporization surface includes a first concave-convex structure to form the wetting structure; and the first concave-convex structure includes a plurality of first grooves, and the plurality of first grooves are in communication with the plurality of micropores in a liquid guiding manner.
In an implementation, the plurality of first grooves are provided parallel to each other, and a length direction of each of the plurality of first grooves is parallel to a first direction; and a first protruding bar is arranged between every two adjacent first grooves; or
In an implementation, the plurality of first grooves include the plurality of first sub-grooves and the plurality of second sub-grooves; and the plurality of first sub-grooves cooperate with the plurality of second sub-grooves to form a plurality of bumps distributed in an array.
In an implementation, a plurality of end openings of the plurality of micropores that are away from the liquid absorbing surface are all provided on bottom surfaces of the plurality of first grooves; or
In an implementation, the plurality of end openings of the plurality of micropores that are away from the liquid absorbing surface are all provided on the bottom surfaces of the plurality of first grooves; or the plurality of micropores are distributed in an array, each of the plurality of first sub-grooves corresponds to one row of micropores, and each of the plurality of second sub-grooves correspond to one column of micropores; and a plurality of rows of bumps and a plurality of rows of micropores are provided alternately, and a plurality of columns of bumps and a plurality of columns of micropores are provided alternately.
In an implementation, the heating body further includes a heating film, the heating film is arranged on a surface of the wetting structure, the heating film is configured to heat and vaporize the aerosol-generation substrate, and the heating film allows corresponding micropores to be exposed to the outside.
In an implementation, the heating body further includes a heating film, the heating film includes a first part, a second part, a third part, and a fourth part, the first part is arranged on a side wall and a bottom wall of each of the plurality of first sub-grooves, the second part is arranged on a side wall and a bottom wall of each of the plurality of second sub-grooves, the third part is arranged on an end surface of each of the plurality of bumps that is away from the liquid absorbing surface, and the fourth part extends to a pore wall of a corresponding micropore.
In an implementation, a width of each of the plurality of first grooves ranges from 1 μm to 100 μm.
In an implementation, a width of each of the plurality of first grooves is less than or equal to 1.2 times of a pore size of each of the plurality of micropores.
In an implementation, a depth of each of the plurality of first grooves ranges from 1 μm to 200 μm.
In an implementation, the depth of each of the plurality of first grooves ranges from 1 μm to 50 μm.
In an implementation, the plurality of micropores are provided in an array and include a plurality of micropore columns parallel to a first direction; and the wetting structure includes a plurality of first sub-grooves, an extending direction of each of the plurality of first sub-grooves is parallel to the first direction, and each of the plurality of first sub-grooves at least corresponds to one of the plurality of micropore columns parallel to the first direction.
In an implementation, the plurality of micropores include a plurality of micropore columns parallel to a second direction, the wetting structure includes a plurality of second sub-grooves, an extending direction of each of the plurality of second sub-grooves is parallel to the second direction, and each of the plurality of second sub-grooves at least corresponds to one of the plurality of micropore columns parallel to the second direction, where the plurality of first sub-grooves and the plurality of second sub-grooves are communicated in an intersecting manner to form a mesh structure.
In an implementation, the heating body further includes a positive electrode and a negative electrode, and two ends of the heating film are respectively electrically connected to the positive electrode and the negative electrode; and the first direction is a direction approaching the negative electrode along the positive electrode.
In an implementation, a surface of the heating film is a lipophilic structure and/or a surface of the heating film that is away from the dense substrate includes a scrubbing structure or a sandblasting structure.
In an implementation, a thickness of the heating film ranges from 200 nm to 5 μm; and a material of the heating film is one or more of aluminum and alloy thereof, copper and alloy thereof, silver and alloy thereof, nickel and alloy thereof, chromium and alloy thereof, platinum and alloy thereof, titanium and alloy thereof, zirconium and alloy thereof, palladium and alloy thereof, iron and alloy thereof, gold and alloy thereof, molybdenum and alloy thereof, niobium and alloy thereof, or tantalum and alloy thereof.
In an implementation, a thickness of the heating film ranges from 200 nm to 10 μm; and a material of the heating film is one or more of stainless steel, nickel-chromium iron alloy, or nickel-based corrosion-resistant alloy.
In an implementation, the vaporization surface is a scrubbing structure or a sandblasting structure to form the wetting structure.
In an implementation, the liquid absorbing surface is a scrubbing structure or a sandblasting structure.
In an implementation, the liquid absorbing surface includes a second concave-convex structure, the second concave-convex structure includes a plurality of second grooves, and the plurality of second grooves are in communication with the plurality of micropores in a liquid guiding manner.
In an implementation, a material of the dense substrate is quartz, glass, or dense ceramic, and the plurality of micropores are ordered.
In an implementation, the plurality of micropores are straight through holes, and an axis of each of the plurality of micropores is perpendicular to the dense substrate.
In an implementation, the heating body further includes a liquid guiding member, where the liquid guiding member and the liquid absorbing surface of the dense substrate are spaced to form a gap; or the liquid guiding member is in contact with the liquid absorbing surface of the dense substrate.
In an implementation, the liquid guiding member is porous ceramic or a cotton core; or a material of the liquid guiding member is dense, and a plurality of run-through holes are provided on the liquid guiding member.
In an implementation, a plurality of transverse holes are further provided in the dense substrate, and the plurality of transverse holes communicate the plurality of micropores; and an axis of each of the plurality of transverse holes intersects with an axis of each of the plurality of micropores.
To resolve the foregoing technical problem, a second technical solution provided in this application is to provide a vaporizer, including a liquid storage cavity and a heating body, where the liquid storage cavity is configured to store an aerosol-generation substrate; the heating body is in fluid communication with the liquid storage cavity; and the heating body is the heating body according to any one of the foregoing.
To resolve the foregoing technical problem, a third technical solution provided in this application is to provide an electronic vaporization device, including a vaporizer and a main unit, where the vaporizer is the vaporizer according to the foregoing; and the main unit is configured to supply electric energy for operation of the vaporizer.
Beneficial effects of this application are as follows: different from the related art, this application discloses a heating body, a vaporizer, and an electronic vaporization device. The heating body includes a dense substrate; and the dense substrate includes a liquid absorbing surface and a vaporization surface arranged opposite to each other, a plurality of micropores are provided on the dense substrate, and the plurality of micropores run through the liquid absorbing surface and the vaporization surface. The vaporization surface is a wetting structure on which surface treatment is performed, and the wetting structure is in communication with the plurality of micropores in a liquid guiding manner. Therefore, a wetted area of the vaporization surface is enlarged, and the vaporization efficiency is improved.
To describe the technical solutions in the embodiments of this application more clearly, the following briefly introduces the accompanying drawings required for describing the embodiments. Apparently, the accompanying drawings in the following description show merely some embodiments of this application, and a person of ordinary skill in the art may still derive other accompanying drawings from these accompanying drawings without creative efforts.
The technical solutions in the embodiments of this application are clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Apparently, the described embodiments are merely some rather than all of the embodiments of this application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of this application without creative efforts shall fall within the protection scope of this application.
In the following description, for the purpose of illustration rather than limitation, specific details such as the specific system structure, interface, and technology are proposed to thoroughly understand this application.
The terms “first”, “second”, and “third” in this application are merely intended for a purpose of description, and shall not be understood as indicating or implying relative significance or implicitly indicating the number of indicated technical features. Therefore, features defining “first”, “second”, and “third” can explicitly or implicitly include at least one of the features. In the description of this application, “a plurality of” means at least two, such as two and three unless it is specifically defined otherwise. All directional indications (for example, upper, lower, left, right, front, and rear) in the embodiments of this application are only used for explaining relative position relationships, movement situations, or the like between various components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications change accordingly. In the embodiments of this application, the terms “include”, “have”, and any variant thereof are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but further optionally includes a step or unit that is not listed, or further optionally includes another step or component that is intrinsic to the process, method, product, or device.
“Embodiment” mentioned in this specification means that particular features, structures, or characteristics described with reference to the embodiment may be included in at least one embodiment of this application. The term appearing at different positions of this specification may not refer to the same embodiment or an independent or alternative embodiment that is mutually exclusive with another embodiment. A person skilled in the art explicitly or implicitly understands that the embodiments described in this specification may be combined with other embodiments.
This application is described in detail below with reference to the accompanying drawings and the embodiments.
Referring to
In this embodiment, an electronic vaporization device 100 is provided. The electronic vaporization device 100 may be configured to vaporize an aerosol-generation substrate. The electronic vaporization device 100 includes a vaporizer 1 and a main unit 2 that are electrically connected to each other.
The vaporizer 1 is configured to store an aerosol-generation substrate and vaporize the aerosol-generation substrate to form aerosols that can be inhaled by a user. The vaporizer 1 specifically may be applied to different fields such as medical care, cosmetology, and recreation inhalation. In a specific embodiment, the vaporizer 1 may be applied to an electronic aerosol vaporization device to vaporize an aerosol-generation substrate and generate aerosols for inhalation by an inhaler, and the following embodiments are described by using the recreation inhalation as an example.
For a specific structure and functions of the vaporizer 1, reference may be made to the specific structure and functions of the vaporizer 1 involved in the following embodiments, same or similar technical effects may also be implemented, and details are not described herein again.
The main unit 2 includes a battery (not shown in the figure) and a controller (not shown in the figure). The battery is configured to supply electric energy for operation of the vaporizer 1, to cause the vaporizer 1 to vaporize the aerosol-generation substrate to form aerosols. The controller is configured to control operation of the vaporizer 1. The main unit 2 further includes other components such as a battery holder and an airflow sensor.
The vaporizer 1 and the main unit 2 may be integrally arranged or may be detachably connected to each other, which may be designed according to a specific requirement.
Referring to
The vaporizer 1 includes a housing 10, a heating body 11, and a vaporization base 12. The vaporization base 12 includes a mounting cavity (not marked in the figure), and the heating body 11 is arranged in the mounting cavity; and the heating body 11 is arranged together with the vaporization base 12 in the housing 10. The housing 10 is provided with a vapor outlet channel 13, an inner surface of the housing 10, an outer surface of the vapor outlet channel 13, and a top surface of the vaporization base 12 cooperate to form a liquid storage cavity 14, and the liquid storage cavity 14 is configured to store a liquid aerosol-generation substrate. The heating body 11 is electrically connected to the main unit 2, to vaporize the aerosol-generation substrate to generate aerosols.
The vaporization base 12 includes an upper base 121 and a lower base 122, and the upper base 121 and the lower base 122 cooperate to form the mounting cavity; and a vaporization surface of the heating body 11 and a cavity wall of the mounting cavity cooperate to form a vaporization cavity 120. A liquid supplying channel 1211 is provided on the upper base 121; and The aerosol-generation substrate in the liquid storage cavity 14 flows into the heating body 11 through the liquid supplying channel 1211, namely, the heating body 11 is in fluid communication with the liquid storage cavity 14. An air inlet channel 15 is provided on the lower base 122, external air enters the vaporization cavity 120 through the air inlet channel 15, carries aerosols vaporized by the heating body 11 to flow to the vapor outlet channel 13, and a user inhales the aerosols through an end opening of the vapor outlet channel 13.
Referring to
The heating body 11 includes a dense substrate 111, and the dense substrate 111 includes a liquid absorbing surface 1111 and a vaporization surface 1112 arranged opposite to each other. A plurality of micropores 1113 are provided on the dense substrate 111, the plurality of micropores 1113 are through holes running through the liquid absorbing surface 1111 and the vaporization surface 1112, and the plurality of micropores 1113 are ordered. The plurality of micropores 1113 are configured to guide the aerosol-generation substrate from the liquid absorbing surface 1111 to the vaporization surface 1112. That is, the aerosol-generation substrate in the liquid storage cavity 14 flows to the liquid absorbing surface 1111 of the dense substrate 111 through the liquid supplying channel 1211, and is guided to the vaporization surface 1112 through capillary force of the plurality of micropores 1113. In other words, under the action of gravity and/or capillary force, the aerosol-generation substrate flows from the liquid absorbing surface to the vaporization surface. The aerosol-generation substrate is heated and vaporized on the vaporization surface of the heating body 11 to generate aerosols. The vaporization surface 1112 is a wetting structure on which surface treatment is performed, and the wetting structure is in communication with the plurality of micropores 1113 in a liquid guiding manner. The liquid absorbing surface 1111 is a smooth surface.
It may be understood that, because the aerosol-generation substrate is vaporized on the vaporization surface 1112 to generate aerosols, by arranging the wetting structure on the vaporization surface 1112, a wetted area of the vaporization surface 1112 is enlarged, so that more aerosol-generation substrates may be attached to the vaporization surface 1112, thereby improving the vaporization efficiency.
A material of the dense substrate 111 is glass, dense ceramic, silicon, or quartz. When the material of the dense substrate 111 is glass, the glass may be one of common glass, quartz glass, borosilicate glass, or photosensitive lithium aluminosilicate glass.
The dense substrate 111 is in a shape of a sheet. It may be understood that, a sheet-like body is said compared to a block-shaped body, a ratio of a length to a thickness of a sheet-like body is greater than a ratio of a length to a thickness of a block-shaped body; and for example, the dense substrate may be in a shape of a rectangular sheet. The dense substrate 111 may also be in a shape of a plate, an arc, or a cylinder, which is specifically designed as required, and other structures of the vaporizer 1 are arranged cooperating with the shape of the dense substrate 111. The plurality of micropores 1113 on the dense substrate 111 are straight through holes running through two opposite surfaces of the dense substrate 111, and an axis of each of the plurality of micropores 1113 is perpendicular to the dense substrate 111. That is, an extending direction of each of the plurality of micropores 1113 is perpendicular to the dense substrate 111.
A pore size of each of the plurality of micropores 1113 on the dense substrate 111 ranges from 1 μm to 100 μm. When the pore size of each of the plurality of micropores 1113 is less than 1 μm, the liquid supplying requirement cannot be met, leading to a decrease in an amount of aerosols; and when the pore size of each of the plurality of micropores 1113 is greater than 100 μm, the aerosol-generation substrate may easily leak out from the plurality of micropores 1113 to cause liquid leakage. Optionally, the pore size of each of the plurality of micropores 1113 ranges from 20 μm to 50 μm. It may be understood that, the pore size of each of the plurality of micropores 1113 is selected according to an actual requirement.
A thickness of the dense substrate 111 ranges from 0.1 mm to 2 mm. The thickness of the dense substrate 111 is a distance between the liquid absorbing surface 1111 and the vaporization surface 1112. When the thickness of the dense substrate 111 is greater than 2 mm, the liquid supplying requirement cannot be met, leading to a decrease in the amount of aerosols, a great heat loss, and high costs for providing the dense substrate 111; and when the thickness of the dense substrate 111 is less than 0.1 mm, the intensity of the dense substrate 111 cannot be ensured, which is not conducive to improve the performance of the electronic vaporization device. Optionally, the thickness of the dense substrate 111 ranges from 0.3 mm to 0.8 mm. It may be understood that, the thickness of the dense substrate 111 is selected according to an actual requirement.
A ratio of the thickness of the dense substrate 111 to the pore size of each of the plurality of micropores 1113 ranges from 20:1 to 3:1, to improve a liquid supplying capability. When the ratio of the thickness of the dense substrate 111 to the pore size of each of the plurality of micropores 1113 is greater than 20:1, the aerosol-generation substrate supplied through the capillary force of each of the plurality of micropores 1113 can hardly meet a vaporization requirement, which easily leads to dry burning and a decrease in an amount of aerosols generated in single vaporization; and when the ratio of the thickness of the dense substrate 111 to the pore size of each of the plurality of micropores 1113 is less than 3:1, the aerosol-generation substrate may easily leak out from each of the plurality of micropores 1113 to cause a waste, leading to a decrease in the vaporization efficiency and a decrease in a total amount of aerosols. Optionally, the ratio of the thickness of the dense substrate 111 to the pore size of each of the plurality of micropores 1113 ranges from 15:1 to 5:1.
A ratio of a distance between centers of two adjacent micropores 1113 to the pore size of each of the plurality of micropores 1113 ranges from 3:1 to 1.5:1, so that the intensity of the dense substrate 111 is improved as much as possible while causing the plurality of micropores 1113 on the dense substrate 111 to meet the liquid supplying capability. Optionally, the ratio of the distance between centers of two adjacent micropores 1113 to the pore size of each of the plurality of micropores 1113 ranges from 3:1 to 2:1. Further optionally, the ratio of the distance between centers of two adjacent micropores 1113 to the pore size of each of the plurality of micropores 1113 ranges from 3:1 to 2.5:1.
In this implementation, the heating body 11 further includes a heating component 112, a positive electrode 113, and a negative electrode 114, where two ends of the heating component 112 are respectively electrically connected to the positive electrode 113 and the negative electrode 114. The heating component 112 is configured to vaporize the aerosol-generation substrate. The heating component 112 is arranged on the vaporization surface 1112 of the dense substrate 111, namely, the heating component 112 is arranged on a surface of the wetting structure, to heat and vaporize the aerosol-generation substrate to generate aerosols. The positive electrode 113 and the negative electrode 114 are both arranged on the vaporization surface 1112 of the dense substrate 111 to be electrically connected to the main unit 2. The heating component 112 may be a heating sheet, a heating film, or a heating mesh, provided that the aerosol-generation substrate can be heated and vaporized. In another implementation, the heating component 112 may be buried inside the dense substrate 111. In still another embodiment, the dense substrate 111 is at least partially conductive to serve as the heating component 112.
Optionally, the heating component 112 is a heating film, a thickness of the heating film ranges from 200 nm to 5 μm, and a material of the heating film is one or more of aluminum and alloy thereof, copper and alloy thereof, silver and alloy thereof, nickel and alloy thereof, chromium and alloy thereof, platinum and alloy thereof, titanium and alloy thereof, zirconium and alloy thereof, palladium and alloy thereof, iron and alloy thereof, gold and alloy thereof, molybdenum and alloy thereof, niobium and alloy thereof, or tantalum and alloy thereof.
Optionally, the heating component 112 is a heating film, a thickness of the heating film ranges from 200 nm to 10 μm, and a material of the heating film is one or more of stainless steel (304, 316L, 317L, or 904L), nickel-chromium iron alloy (inconel625 or inconel718), or nickel-based corrosion-resistant alloy (nickel-molybdenum alloy B-2 or nickel-chromium-molybdenum alloy C-276).
In some other implementations, the aerosol-generation substrate may be vaporized in a microwave heating or laser heating manner, which is specifically designed as required.
The following describes the heating body 11 in detail by using an example in which the heating component 112 performs heating, the heating component 112 is arranged on the surface of the wetting structure, and the heating component 112 is a heating film.
Optionally, the heating film is formed on the vaporization surface 1112 of the dense substrate 111 through a physical vapor deposition process. The heating film allows corresponding micropores 1113 to be exposed to the outside (as shown in
Referring to
By providing the microporous array region 1114 and the blank region 1115 provided surrounding the periphery of the microporous array region 1114 on the dense substrate 111, a number of micropores 1113 on the dense substrate 111 is reduced. Therefore, the intensity of the dense substrate 111 is improved, and production costs for providing the micropores 1113 on the dense substrate 111 are reduced. The microporous array region 1114 in the dense substrate 111 serves as a vaporization region and covers the heating component 112 and a region around the heating component 112, that is, basically covers regions reaching a temperature for vaporizing the aerosol-generation substrate, so that the thermal efficiency is fully utilized.
It may be understood that, only when a size of a region around the microporous array region 1114 of the dense substrate 111 in this application is greater than a pore size of each of the plurality of micropores 1113, can the region be referred to as the blank region 1115. That is, the blank region 1115 in this application is a region in which micropores 1113 can be formed but no micropore 1113 is formed, rather than a region around the microporous array region 1114 and in which micropores 1113 cannot be formed. In an implementation, it is considered that a blank region 1115 is provided in a circumferential direction of the microporous array region 1114 only when a gap between a micropore 1113 that is closest to a touchline of the dense substrate 111 and the touchline of the dense substrate 111 is greater than a pore size of the dense substrate 111.
In this implementation, the vaporization surface 1112 of the dense substrate 111 includes a first concave-convex structure 1116 to form the wetting structure. The first concave-convex structure 1116 includes a plurality of first grooves 1116a, the plurality of first grooves 1116a are in communication with the plurality of micropores 1113 in a liquid guiding manner, capillary force of the plurality of first grooves 1116a can guide the aerosol-generation substrate from the plurality of micropores 1113 into the plurality of first grooves 1116a, and a part of the heating film (the heating component 112) is deposited in the plurality of first grooves 1116a. The plurality of first grooves 1116a crosses the microporous array region 1114. It may be understood that, compared with a case that the vaporization surface is a smooth surface, the vaporization surface 1112 includes the plurality of first grooves 1116a, and the aerosol-generation substrate may be stored in the plurality of first grooves 1116a, so that an area of the vaporization surface 1112 is enlarged, and a contact area between the aerosol-generation substrate and the heating film (the heating component 112) is also enlarged, thereby enlarging an effective vaporization area and helping improve the vaporization efficiency. In addition, because the plurality of first grooves 1116a include capillary force, the aerosol-generation substrate in the plurality of first grooves 1116a may not reflux to the liquid storage cavity 14, and the aerosol-generation substrate in the plurality of first grooves 1116a is directly vaporized, so that repeated heating is avoided, and an aerosol reduction degree is relatively high. In addition, because after the electronic vaporization device is stopped for a period, a specific amount of aerosol-generation substrates may be stored in the plurality of first grooves 1116a, and dry burning may not occur even if the user inversely places the electronic vaporization device and perform inhalation for several times during next use.
Optionally, a width of each of the plurality of first grooves 1116a ranges from 1 μm to 100 μm. When the width of each of the plurality of first grooves 1116a is greater than 100 μm, the capillary force of the plurality of first grooves 1116a is not strong, and the vaporization efficiency is not apparently improved; and When the width of each of the plurality of first grooves 1116a is less than 1 μm, flow resistance is excessively great, and flowing of the aerosol-generation substrate is slow.
Optionally, the width of each of the plurality of first grooves 1116a is less than or equal to 1.2 times of the pore size of each of the plurality of micropores 1113, thereby ensuring that the capillary force of the plurality of first grooves 1116a meets a requirement.
Optionally, a depth of each of the plurality of first grooves 1116a ranges from 1 μm to 200 μm. When the depth of each of the plurality of first grooves 1116a is less than 1 μm, the capillary force of the plurality of first grooves 1116a is not apparent, and the aerosol-generation substrate in the plurality of micropores 1113 can be hardly guided to the plurality of first grooves 1116a, leading to dry burning in the plurality of first grooves 1116a; and when the depth of each of the plurality of first grooves 1116a is greater than 200 μm, e-liquid explosion may easily occur, the heating film (the heating component 112) can be hardly formed in the plurality of first grooves 1116a, and if the dense substrate 111 is quite thin and the depth of each of the plurality of first grooves 1116a is excessively great, the intensity may be easily affected. Optionally, the depth of each of the plurality of first grooves 1116a ranges from 1 μm to 50 μm, so that e-liquid explosion may be prevented and a particle size of aerosols may be prevented from being excessively great. If the particle size of aerosols needs to be greater, the depth of each of the plurality of first grooves 1116a may range from 50 μm to 200 μm.
In an implementation, the plurality of first grooves 1116a are provided parallel to each other, and a length direction of each of the plurality of first grooves 1116a is parallel to a first direction; and a first protruding bar 1116b is arranged between every two adjacent first grooves 1116a (as shown in
Optionally, a plurality of end openings of the plurality of micropores 1113 that are away from the liquid absorbing surface 1111 are all provided on bottom surfaces of the plurality of first grooves 1116a (as shown in
Optionally, an end opening of a same micropore 1113 that is away from the liquid absorbing surface 1111 is provided on a bottom surface of each of the plurality of first grooves 1116a (as shown in
Optionally, the heating film includes a first part, a second part, and a third part, where the first part of the heating film (the heating component 112) is arranged on a side wall and a bottom wall of each of the plurality of first grooves 1116a, the second part is arranged on the end surface of each of the plurality of first protruding bars 1116b that is away from the liquid absorbing surface 1111, and the third part extends to a pore wall of a corresponding micropore 1113. Because the part of the heating film that is arranged on the side wall and/or the bottom wall of each of the plurality of first grooves 1116a is directly electrically connected to the positive electrode 113 and the negative electrode 114, a current flows through the part of the heating film arranged on the side wall and/or the bottom wall of each of the plurality of first grooves 1116a, so that heat may be directly generated to heat the aerosol-forming substrate in the plurality of first grooves 1116a and the plurality of micropores 1113, thereby improving the energy utilization.
In another implementation, the plurality of first grooves 1116a are provided parallel to each other, and a length direction of each of the plurality of first grooves 1116a is parallel to a second direction; and a second protruding bar 1116c is arranged between every two adjacent first grooves 1116a (as shown in
Optionally, a plurality of end openings of the plurality of micropores 1113 that are away from the liquid absorbing surface 1111 are all provided on bottom surfaces of the plurality of first grooves 1116a (as shown in
Optionally, an end opening of a same micropore 1113 that is away from the liquid absorbing surface 1111 is provided on a bottom surface of each of the plurality of first grooves 1116a (as shown in
Optionally, the heating film includes a first part, a second part, and a third part, where the first part of the heating film (the heating component 112) is arranged on a side wall and a bottom wall of each of the plurality of first grooves 1116a, the second part is arranged on the end surface of each of the plurality of second protruding bars 1116c that is away from the liquid absorbing surface 1111, and the third part extends to a pore wall of a corresponding micropore 1113. Because the part of the heating film that is arranged on the side wall and/or the bottom wall of each of the plurality of first grooves 1116a is directly electrically connected to the positive electrode 113 and the negative electrode 114, a current flows through the part of the heating film arranged on the side wall and/or the bottom wall of each of the plurality of first grooves 1116a, so that heat may be directly generated to heat the aerosol-forming substrate in the plurality of first grooves 1116a and the plurality of micropores 1113, thereby improving the energy utilization.
In still another implementation, the plurality of first grooves 1116a include a plurality of first sub-grooves A extending in the first direction and a plurality of second sub-grooves B extending in the second direction, and the plurality of first sub-grooves A and the plurality of second sub-grooves B are provided in an intersecting manner; and a bump 1116d is arranged between every two adjacent first sub-grooves A and between every two adjacent second sub-grooves B (as shown in
Optionally, a plurality of end openings of the plurality of micropores 1113 that are away from the liquid absorbing surface 1111 are all provided on bottom surfaces of the plurality of first grooves 1116a (as shown in
Optionally, an end opening of a same micropore 1113 that is away from the liquid absorbing surface 1111 is provided on a bottom surface of each of the plurality of first grooves 1116a (as shown in
Optionally, the plurality of first sub-grooves A cooperate with the plurality of second sub-grooves B to form a plurality of bumps 1116d distributed in an array. The plurality of micropores 1113 are provided in an array and include a plurality of micropore columns parallel to the first direction and a plurality of micropore columns parallel to the second direction; an extending direction of each of the plurality of first sub-grooves A is parallel to the first direction, and each of the plurality of first sub-grooves at least corresponds to one of the plurality of micropore columns parallel to the first direction; and an extending direction of each of the plurality of second sub-grooves B is parallel to the second direction, and each of the plurality of second sub-grooves at least corresponds to one of the plurality of micropore columns parallel to the second direction, where the plurality of first sub-grooves A and the plurality of second sub-grooves B are communicated in an intersecting manner to form a mesh structure.
For example, the plurality of micropores 1113 are distributed in an array. A plurality of end openings of the plurality of micropores 1113 that are away from the liquid absorbing surface 1111 are all provided on bottom surfaces of the plurality of first grooves 1116a; each of the plurality of first sub-grooves A corresponds to one of the plurality of micropore columns parallel to the first direction, and each of the plurality of second sub-grooves B corresponds to one of the plurality of micropore columns parallel to the second direction; and a plurality of rows of bumps 1116d and a plurality of rows of micropores 1113 are provided alternately, and a plurality of columns of bumps 1116d and a plurality of columns of micropores 1113 are provided alternately (as shown in
Optionally, the heating film includes a first part, a second part, a third part, and a fourth part, where the first part of the heating film (the heating component 112) is arranged on a side wall and a bottom wall of each of the plurality of first sub-grooves A, the second part is arranged on a side wall and a bottom wall of each of the plurality of second sub-grooves B, the third part is arranged on the end surface of each of the plurality of bumps 1116d that is away from the liquid absorbing surface 1111, and the fourth part extends to a pore wall of a corresponding micropore 1113 (as shown in
It should be noted that, when the vaporization surface of the heating body is a smooth surface, when a heating film is formed on the vaporization surface through a physical vapor deposition process, the heating film includes a plane heating film, an in-hole heating film, and a corner connection region heating film, where the plane heating film is arranged on the vaporization surface, the in-hole heating film is arranged in each of the plurality of micropores, and the corner connection region heating film connects the plane heating film and the in-hole heating film. Through simulation analysis on potentials of the heating body when powered-on, it is found that in this type of heating bodies, currents basically flow through the plane heating film and the corner connection region heating film, and almost no current flows through the in-hole heating film. Therefore, it may be considered that, a region where the heating body actually generates heat is the plane heating film and the corner connection region heating film, and the in-hole heating film is a heat conduction region. Through observation on the vaporization surface during vaporization, it is found that basically no e-liquid film is formed on the vaporization surface no matter the vaporization surface works or does not work, so that it is determined that the in-hole heating film is actually configured for vaporization. In the simulation analysis on the potentials of the heating body when powered-on, the in-hole heating film is a heat conduction region, so that the energy utilization of the heating film is relatively low, which is intuitively expressed as a small vaporization amount. Meanwhile, it is found through adverse inference that, heat dissipation is only performed on the in-hole heating film to implement heat dissipation on the entire heating film, and a problem such as a risk of dry burning or burnout is synchronously caused.
In this application, the vaporization surface 1112 of the dense substrate 111 is set to be a wetting structure. For example, the vaporization surface 1112 includes the first concave-convex structure 1116, and the heating film (the heating component 112) is also formed on the side wall and the bottom wall of each of the plurality of first grooves 1116a of the first concave-convex structure 1116, so that an effective heating area of the heating component 112 is improved, the energy utilization is improved, and a part of the aerosol-generation substrate is guided by the plurality of first grooves 1116a to the grooves for vaporization, thereby helping improve the vaporization efficiency. Because vaporization may be performed in the plurality of first grooves 1116a and the plurality of micropores 1113 at the same moment, the aerosol-generation substrate in the plurality of micropores may be effectively prevented from being empty instantly due to excessively strong vaporization in the plurality of micropores, and a sound of inhalation air-back caused due to air intaking may be effectively avoided. In addition, the contact area between the aerosol-generation substrate and the heating component 112 is enlarged through the first concave-convex structure 1116, so that a heat dissipation area of the heating component 112 is enlarged, and dry burning is effectively prevented.
The inventor further found that, by setting the vaporization surface 1112 to be a wetting structure, the heating film is deposited on a coarse surface, and compared with a case that the vaporization surface is a smooth surface and the heating film is deposited on the smooth surface, a vaporization amount is apparently increased, for example, increased from 6.2 mg/puff to 8.5 mg/puff. In addition, dirt accumulation is also apparently reduced, and the taste and sweetness of aerosols are also improved.
It may be understood that, a shape of a longitudinal section of each of the plurality of first grooves 1116a is a rectangle, a triangle, a circle, an arc, V/U, or Ω, which is specifically designed as required. The longitudinal section refers to a section in a direction perpendicular to the dense substrate 111.
In other implementations, the first concave-convex structure 1116 on the vaporization surface 1112 may cover a region on which the heating film (the heating component 112) is arranged; the first concave-convex structure 1116 on the vaporization surface 1112 may only cover a part of the region on which the heating film (the heating component 112) is arranged; or the first concave-convex structure 1116 on the vaporization surface 1112 may cover a part of the region on which the heating film (the heating component 112) is arranged and cover a part of the blank region 1115, provided that the energy utilization of the heating component 112 can be improved to some extent.
In other implementations, the vaporization surface 1112 is set to be a scrubbing structure or a sandblasting structure to form a wetting structure, and same technical effects may be implemented when compared with the wetting structure formed by the first concave-convex structure 1116 included by the vaporization surface 1112, which are not described herein again.
Referring to
Structures of the heating body 11 provided in
In this implementation, the liquid absorbing surface 1111 includes a second concave-convex structure 1117, and the second concave-convex structure 1117 includes a plurality of second grooves 1117a; and for a specific arrangement manner of the second concave-convex structure 1117, reference may be made to the specific arrangement manner of the first concave-convex structure 1116, and details are not described herein again. The plurality of second grooves 1117a are in communication with the plurality of micropores 1113 in a liquid guiding manner, and through arrangement of the plurality of second grooves 1117a, bubbles entering from the plurality of micropores 1113 are prevented from being attached to the liquid absorbing surface 1111 and growing up to block liquid supplying of micropores 1113 in a surrounding region.
This application further provides a heating body 11. In this implementation, a structure of the heating body is basically the same as the structure of the heating body 11 provided in
In a group of comparative experiments, in a case that other conditions remain unchanged, the dense substrate is quartz glass, the thickness of the dense substrate is 400 μm, the pore size of each of the plurality of micropore is 40 μm, a pore distance is 80 μm, the heating film is a thin film, and a power is 6.5 W, the inventor performs vaporization amount comparison experiment on heating bodies (referring to
Referring to
Structures of the heating body 11 provided in
The first protective film 115 is arranged on a surface of the heating component 112 that is away from the dense substrate 111, and a material of the first protective film 115 is an aerosol-generation substrate corrosion-resistant non-conductive material. The second protective film 116 is arranged on surfaces of the positive electrode 113 and the negative electrode 114 that are away from the dense substrate 111, and a material of the second protective film 116 is an aerosol-generation substrate corrosion-resistant conductive material, which effectively prevents corrosion of the aerosol-generation substrate on the heating component 112, the positive electrode 113, and the negative electrode 114, and helps improve a service life of the heating body 11.
Optionally, the material of the first protective film 115 is ceramic or glass. Because a material of the heating component 112 is metal, a thermal expansion coefficient of ceramic or glass matches the metal heating component 112, and adhesion of ceramic or glass matches the metal heating component 112. Therefore, ceramic or glass is used as the first protective film 115, and the first protective film 115 can hardly fall off a heating portion 1121, so that the heating portion is well protected.
When the material of the first protective film 115 is ceramic, the material of the ceramic may be one or more of aluminum nitride, silicon nitride, aluminum oxide, silicon oxide, silicon carbide, or zirconium oxide, which is specifically selected as required.
Optionally, a thickness of the first protective film 115 ranges from 10 nm to 1000 nm.
Optionally, a thickness of the second protective film 116 ranges from 10 nm to 2000 nm.
Optionally, a material of the second protective film 116 is conductive ceramic or metal. Compared with a case that the first protective film 115 is made of a non-conductive material, the second protective film 116 is made of a conductive material, so that the second protective film 116 does not affect the electrical connection between the positive electrode 113 and the negative electrode 114 with the main unit 2 while protecting the positive electrode 113 and the negative electrode 114 from corrosion of the aerosol-generation substrate. Conductive ceramic or metal is used as the second protective film 116, which helps reduce contact resistance.
When the material of the second protective film 116 is conductive ceramic, a material of the conductive ceramic is one or more of titanium nitride or titanium diboride. It may be understood that, conductive ceramic is more aerosol-generation substrate corrosion-resistant than metal.
Referring to
Structures of the heating body 11 provided in
Optionally, a material of the liquid guiding member 117 is a porous material, such as porous ceramic or a cotton core.
Optionally, the material of the liquid guiding member 117 is dense, such as dense ceramic or glass. In this case, a plurality of run-through holes (not shown in the figure) are provided on the liquid guiding member 117, and the plurality of run-through holes include capillary force.
Optionally, the liquid guiding member 117 is in contact with the liquid absorbing surface 1111 of the dense substrate 111 (as shown in
Optionally, the liquid guiding member 117 and the liquid absorbing surface 1111 of the dense substrate 111 are arranged opposite to each other and at intervals to form a gap (not shown in the figure). The aerosol-generation substrate is guided to the gap through the capillary force of the liquid guiding member 117, and then enters the liquid absorbing surface 1111 of the dense substrate 111.
By arranging the liquid guiding member 117 on one side of the liquid absorbing surface 1111 of the dense substrate 111, a liquid supplying speed is further controlled.
Referring to
Structures of the heating body 11 provided in
The plurality of transverse holes 1118 communicates the plurality of micropores 1113. An axis of each of the plurality of transverse holes 1118 intersects with an axis of each of the plurality of micropores 1113. Optionally, the axis of each of the plurality of transverse holes 1118 is perpendicular to the axis of each of the plurality of micropores 1113.
The plurality of micropores 1113 and the plurality of transverse holes 1118 form a mesh microfluidic channel, and bubbles may enter the plurality of micropores 1113 during vaporization. By providing the plurality of transverse holes 1118, bubbles entering through adjacent micropores 1113 may be prevented from being connected, namely, may be prevented from being growing up. Meanwhile, even if the bubbles enter the liquid absorbing surface 1111 from the vaporization surface 1112 through the plurality of micropores 1113 and are attached to the liquid absorbing surface 1111 and grow up to block a part of the micropores 1113, the plurality of transverse holes 1118 may supplement aerosol-generation substrates to the blocked micropores 1113, so that liquid is supplied to the vaporization surface 1112 in time, thereby preventing dry burning. The plurality of transverse holes 1118 further include a specific liquid storage function, and it may ensure that the transverse holes may not be burnt out for at least two times of reverse inhalation.
It may be understood that, features of the first embodiment of the heating body 11, the second embodiment of the heating body 11, the third embodiment of the heating body 11, the fourth embodiment of the heating body 11, and the fifth embodiment of the heating body 11 may be randomly combined as required.
The foregoing descriptions are merely implementations of this application, and the patent scope of this application is not limited thereto. All equivalent structure or process changes made according to the content of this specification and the accompanying drawings in this application or by directly or indirectly applying this application in other related technical fields shall fall within the protection scope of this application.
This application is a continuation of International Application No. PCT/CN2022/092856, filed on May 13, 2022, the entire disclosure of which is hereby incorporated by reference.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/CN2022/092856 | May 2022 | US |
| Child | 18091958 | US |
