CN219613077U - Curved surface heat-generating body, atomizer and electron atomizing device - Google Patents

Abstract

The utility model discloses a curved heating body, an atomizer and an electronic atomization device, wherein the curved heating body comprises a substrate; the base body is provided with an atomization surface, a liquid suction surface and a containing cavity, and the liquid suction surface is a wall surface of the containing cavity; the atomizing surface is positioned on the outer surface of the matrix; the first end of the base body is a closed end, and the second end of the base body opposite to the first end is provided with a liquid inlet which is communicated with the accommodating cavity; the base body has a plurality of liquid-guiding holes for guiding the aerosol-generating substrate from the liquid-absorbing surface to the atomizing surface; the area of the atomizing surface is larger than the cross-sectional area of the liquid inlet, and the atomizing surface is a curved surface. The curved surface heat-generating body is mainly through inlet to stock solution chamber conduction heat, through making the area of atomizing face be greater than the cross section area of inlet, and atomizing face area is greater than 1 with the ratio of the area of cooling surface, does benefit to the reduction heat loss, improves the heat utilization efficiency, and then has improved atomization efficiency.

Description

Curved surface heat-generating body, atomizer and electron atomizing device

Technical Field

The utility model relates to the technical field of electronic atomization, in particular to a curved-surface heating body, an atomizer and an electronic atomization device.

Background

The electronic atomization device consists of a curved surface heating body, a battery, a control circuit and the like, wherein the curved surface heating body is used as a core element of the electronic atomization device, and the characteristics of the curved surface heating body determine the atomization effect and the use experience of the electronic atomization device.

The common atomization mode of the existing curved-surface heating body is resistance heating; specifically, the curved heating element includes a porous substrate and a heating element. Porous substrates include rigid substrates (e.g., ceramics, glass) and non-rigid substrates (e.g., cotton, fiber), which are less prone to scorching than non-rigid substrates, and are widely used.

However, the electronic atomizing device employing the curved-surface heat generating body has low atomization efficiency.

Disclosure of Invention

The curved surface heating body, the atomizer and the electronic atomization device provided by the utility model are used for reducing the heat loss of the curved surface heating body.

In order to solve the technical problems, the first technical scheme provided by the utility model is as follows: there is provided a curved heating body for use in an electronic atomizing device for atomizing an aerosol-generating substrate, comprising: a base; the substrate is provided with an atomization surface, a liquid suction surface and a containing cavity, and the liquid suction surface is a wall surface of the containing cavity; the atomizing surface is positioned on the outer surface of the matrix; the first end of the base body is a closed end, and the second end of the base body opposite to the first end is provided with a liquid inlet which is communicated with the accommodating cavity; the base body having a plurality of liquid-directing apertures for directing the aerosol-generating substrate from the liquid-absorbing surface to the atomizing surface;

the area of the atomizing surface is larger than the cross-sectional area of the liquid inlet, and the atomizing surface is a curved surface.

In one embodiment, the shape of the matrix is a bulb, sphere, hemisphere, spherical cap with a major arc in longitudinal section or bullet shape.

In one embodiment, the cross-sectional shape of the substrate is one of a circular ring and an elliptical ring.

In one embodiment, the base includes annular side walls and a bottom wall; the bottom wall plugs one end of the annular side wall to form the closed end;

and/or, the matrix is integrally formed.

In an embodiment, a capillary structure is disposed on a wall surface of the accommodating cavity, and a capillary force of the capillary structure is smaller than a capillary force of the liquid guide hole.

In an embodiment, the wall surface of the accommodating cavity is provided with a plurality of protrusions or grooves which are arranged at intervals, and capillary gaps or grooves formed between adjacent protrusions serve as the capillary structure.

In one embodiment, a plurality of said protrusions or recesses extend from said liquid inlet to said closed end.

In an embodiment, a plurality of protrusions are arranged between the end faces of the wall surface of the accommodating cavity in a surrounding mode to form a buffer cavity, and the buffer cavity is communicated with the liquid inlet.

In one embodiment, a plurality of the protrusions are integrally formed with the base.

In an embodiment, a filler is disposed in the accommodating cavity, the filler includes at least one of fibers and particles, and the filler is used as the capillary structure.

In an embodiment, the material of the matrix is a porous material, and the disordered pores of the matrix are used as the liquid guide pores.

In one embodiment, the material of the substrate is a dense material, and the liquid guiding hole is a through hole penetrating through the liquid suction surface and the atomization surface.

In one embodiment, the equivalent diameter of the liquid guiding hole is 10 μm to 500 μm; and/or the cross section of the liquid guide hole is circular, strip-shaped or polygonal.

In one embodiment, the shapes of the cross sections of the liquid guide holes are the same along the axial direction of the liquid guide holes; and/or the longitudinal section of the liquid guide hole is rectangular, trapezoid or stepped.

In one embodiment, the curved heating element further comprises a heating element, and the heating element is arranged on the atomization surface or embedded in the matrix;

or, at least the part of the matrix located on the atomizing surface is doped with a conductive material.

In one embodiment, the heating element covers the entire outer surface of the substrate.

In one embodiment, the material of the substrate is a compact material, and the liquid guide hole is a through hole penetrating through the liquid suction surface and the atomization surface; the heating element is provided with a plurality of through holes, the cross section shape and the size of the through holes are the same as those of the port of the liquid guide hole on the atomization surface, and the axis of the through holes of the heating element coincides with the axis of the liquid guide hole.

In order to solve the technical problems, a second technical scheme provided by the utility model is as follows: providing an atomizer, comprising a liquid storage cavity and a curved surface heating body; the reservoir is for storing an aerosol-generating substrate; the curved heating body is in fluid communication with the liquid storage cavity and is used for atomizing the aerosol-generating substrate; the curved heating element is any one of the curved heating elements described above.

In order to solve the technical problems, a third technical scheme provided by the utility model is as follows: an electronic atomization device is provided, which comprises an atomizer and a host; the atomizer is the atomizer; the host is used for providing electric energy for the operation of the curved heating body of the atomizer and controlling the curved heating body of the atomizer to atomize the aerosol generating substrate.

The utility model has the beneficial effects that: the utility model discloses a curved heating body, an atomizer and an electronic atomization device, which are different from the prior art, wherein the curved heating body comprises a substrate; the base body is provided with an atomization surface, a liquid suction surface and a containing cavity, and the liquid suction surface is a wall surface of the containing cavity; the atomizing surface is positioned on the outer surface of the matrix; the first end of the base body is a closed end, and the second end of the base body opposite to the first end is provided with a liquid inlet which is communicated with the accommodating cavity; the base body has a plurality of liquid-guiding holes for guiding the aerosol-generating substrate from the liquid-absorbing surface to the atomizing surface; the area of the atomizing surface is larger than the cross-sectional area of the liquid inlet, and the atomizing surface is a curved surface. Through above-mentioned setting, curved surface heat-generating body is mainly through inlet to stock solution chamber conduction heat, through making the area of atomizing face be greater than the cross sectional area of inlet, and the ratio of atomizing face area and the area of cooling surface is greater than 1, does benefit to the reduction heat loss. Meanwhile, a part of heat generated by the curved-surface heating body is used for atomizing aerosol-generating matrixes on the atomizing surface, and the other part of heat is conducted to the accommodating cavity and absorbed by the aerosol-generating matrixes in the accommodating cavity, and the aerosol-generating matrixes in the accommodating cavity quickly enter the next round of atomizing process, which is equivalent to preheating the aerosol-generating matrixes in the accommodating cavity, so that the part of heat is not wasted, the heat loss is reduced, the heat utilization rate is improved, and the atomizing efficiency is further improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an embodiment of an electronic atomizing device according to the present utility model;

FIG. 2 is a schematic view of a nebulizer according to an embodiment of the utility model;

FIG. 3 is a schematic view showing the structure of a first embodiment of a curved heat-generating body;

FIG. 4 is a schematic cross-sectional view of the curved heat-generating body shown in FIG. 3 in the A-A direction;

FIG. 5 is a schematic view showing the structure of a second embodiment of a curved heat-generating body;

FIG. 6 is a schematic view of the structure of a third embodiment of a curved heat-generating body.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, interfaces, techniques, etc., in order to provide a thorough understanding of the present utility model.

The terms "first," "second," "third," and the like in this disclosure are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may include at least one such feature, either explicitly or implicitly. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. All directional indications (such as up, down, left, right, front, rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indication is changed accordingly. The terms "comprising" and "having" and any variations thereof in embodiments of the present utility model are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may alternatively include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The applicant researches find that the prior heating element has a substrate in a flat plate shape, two opposite planes are respectively a liquid suction surface and an atomization surface, and the thickness of the substrate is generally made as thin as possible in order to improve the liquid supply capability of the heating element, but the heat is easily conducted to an aerosol generating substrate with high fluidity in a liquid storage cavity, so that heat loss is caused, the aerosol generating substrate in the liquid storage cavity is repeatedly heated and dissipated, and the atomization efficiency of an electronic atomization device adopting the heating element is reduced.

The present utility model will be described in detail with reference to the accompanying drawings and examples.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic atomization device according to an embodiment of the utility model.

In the present embodiment, an electronic atomizing device 100 is provided. The electronic atomizing device 100 may be used for atomizing an aerosol-generating substrate. The electronic atomizing device 100 includes an atomizer 1 and a main body 2 electrically connected to each other.

Wherein the atomizer 1 is for storing an aerosol-generating substrate and atomizing the aerosol-generating substrate to form an aerosol for inhalation by a user. The atomizer 1 is particularly useful in different fields, such as medical, cosmetic, leisure, and the like. In one embodiment, the atomizer 1 may be used in an electronic aerosolization device for atomizing an aerosol-generating substrate and generating an aerosol for inhalation by a smoker, the following embodiments taking this leisure inhalation as an example.

The specific structure and function of the atomizer 1 can be referred to as the specific structure and function of the atomizer 1 according to the following embodiments, and the same or similar technical effects can be achieved, which are not described herein.

The host 2 includes a battery (not shown) and a controller (not shown). The battery is used to provide electrical energy for the operation of the atomizer 1 to enable the atomizer 1 to atomize an aerosol-generating substrate to form an aerosol; the controller is used to control the operation of the atomizer 1, i.e. to control the atomizer 1 to atomize the aerosol-generating substrate. The host 2 also includes other components such as a battery holder, an airflow sensor, and the like.

The atomizer 1 and the host machine 2 can be integrally arranged, can be detachably connected, and can be designed according to specific needs.

Referring to fig. 2, fig. 2 is a schematic structural diagram of an atomizer according to an embodiment of the utility model.

The atomizer 1 comprises a liquid storage cavity 11 and a curved heating body 12. The reservoir 11 is for storing an aerosol-generating substrate; optionally, the aerosol-generating substrate is stored in a liquid state. The curved heat-generating body 12 is in fluid communication with the liquid storage chamber 11, the curved heat-generating body 12 being for atomizing an aerosol-generating substrate. The curved heating element 12 is electrically connected with the host 2, so that the host 2 controls the curved heating element 12 to atomize and provides electric energy for the atomization of the curved heating element 12.

It will be appreciated that the atomizer 1 further includes an air inlet passage (not shown) through which external air enters and an aerosol outlet passage (not shown) to which aerosol generated by atomization of the curved heat generating body 12 is carried, and through the port of which the user sucks the aerosol.

Referring to fig. 3 and 4, fig. 3 is a schematic structural view of a first embodiment of the curved heat-generating body, and fig. 4 is a schematic sectional structural view of the curved heat-generating body shown in fig. 3 along A-A direction.

The curved heat-generating body 12 includes a base 121. The base 121 has a liquid suction surface 1211, an atomizing surface 1212, and a housing chamber 1210, and the liquid suction surface 1211 is a wall surface of the housing chamber 1210. The atomizing face 1212 is located on the outer surface of the base 121. The first end of the base 121 is a closed end, and a second end of the base 121 opposite to the first end thereof is provided with a liquid inlet 1213, and the liquid inlet 1213 communicates with the accommodating chamber 1210. The base 121 has a plurality of liquid-directing holes 1214, the liquid-directing holes 1214 for directing aerosol-generating substrate from the liquid-absorbing surface 1211 to the atomizing surface 1212. The area of the atomizing face 1212 is larger than the cross-sectional area of the inlet 1213. The substrate 121 has a hollow structure, and the wall surface of the accommodating cavity 1210 is an inner surface of the substrate 121.

Aerosol-generating substrate in liquid storage chamber 11 flows from liquid inlet 1213 into receiving chamber 1210, and aerosol-generating substrate in receiving chamber 1210 is guided to atomizing surface 1212 via liquid guide hole 1214, so that aerosol is atomized at atomizing surface 1212. By setting the outer surface of the substrate 121 as the atomizing surface 1212, aerosol generated by atomization is facilitated to be taken away by external air for inhalation by a user, i.e., aerosol release is facilitated. The heat generated by the curved-surface heating body 12 is partially used for atomizing the aerosol-generating substrate on the atomizing surface 1212, and is partially transmitted to the accommodating cavity 1210 through the substrate 121, the heat transmitted to the accommodating cavity 1210 is absorbed by the aerosol-generating substrate in the accommodating cavity 1210, and the aerosol-generating substrate in the accommodating cavity 1210 quickly enters the next round of atomizing process, which is equivalent to preheating the aerosol-generating substrate in the accommodating cavity 1210, and the heat is rarely wasted. It will be appreciated that in the prior art the heat generated by the heater is lost by a substantial portion of the heat being transferred to the aerosol-generating substrate within the reservoir 11, in addition to being used for atomisation; the curved-surface heating body 12 provided by the utility model generates heat which is mainly used for preheating aerosol-generating substrates in the accommodating cavity 1210 except for atomization, and is equivalent to utilizing part of heat which is lost, so that the heat loss is reduced, and the heat utilization rate is improved.

For example, in the flat plate-shaped heating element in the prior art, two opposite planes are a liquid suction surface and an atomization surface respectively, the area of the liquid suction surface is the same as that of the atomization surface, and heat generated at the atomization surface is easily conducted to a liquid storage cavity through the liquid suction surface, so that heat loss is caused; it is understood that for a flat plate-shaped heating element, the liquid absorption surface area is the heat dissipation surface area, and the ratio of the atomization surface area to the heat dissipation surface area is 1. The curved-surface heating body 12 mainly conducts heat to the liquid storage cavity 11 through the liquid inlet 1213, namely, the cross section area of the liquid inlet 1213 is the area of a radiating surface; by configuring the area of the atomizing face 1212 to be greater than the cross-sectional area of the liquid inlet 1213, the ratio of the atomizing face 1212 area to the area of the cooling face is greater than 1, improving heat density and reducing heat dissipation. Wherein, the cross section of the liquid inlet 1213 refers to a cross section perpendicular to the axial direction of the liquid inlet 1213.

Since the liquid inlet 1213 communicates with the liquid outlet of the liquid storage chamber 11, the wall surface of the liquid inlet 1213 also dissipates heat to the liquid storage chamber 11, and the area of the atomizing surface 1212 is configured to be larger than the cross-sectional area of the second end (the end having the liquid inlet 1213) of the base 121 in order to further reduce the heat loss. Wherein the cross-section of the second end of the base body 121 is parallel to the cross-section of the liquid inlet 1213.

In order to facilitate the assembly of the curved heat generating body 12 to other structures of the atomizer 1, an end surface of the base 121 for connecting to the second end of the liquid storage chamber 11 is set to be a flat surface. At this time, the cross-sectional area of the second end of the base 121 is the end surface area of the second end of the base 121.

In one embodiment, the atomizing surface 1212 is curved, which reduces the fluidity of the aerosol-generating substrate at the liquid inlet 1213, and avoids the heat dissipation of repeatedly heating the aerosol-generating substrate in the liquid storage chamber 11, thereby facilitating the improvement of heat utilization. Meanwhile, on the premise of the same area of the atomization surface 1212, the space occupied by the curved surface atomization surface 1212 relative to the plane is smaller, which is beneficial to miniaturization of the curved surface heating body 12. Alternatively, the shape of the base 121 may be a bulb shape, a sphere shape, a hemispherical shape, a spherical cap having a major arc in longitudinal section, a bullet shape, or the like.

In one embodiment, the cross-sectional shape of the substrate 121 is one of a circular ring, an elliptical ring, and the like.

Illustratively, the distance between the opposite sides of the longitudinal section of the atomizing face 1212, along the direction in which the second end of the base 121 is directed toward the first end thereof, is maintained and then gradually decreases so as to form a bullet shape. That is, the atomizing face 1212 includes a cylindrical surface and a curved surface that blocks one end of the cylindrical surface. The cross-sectional shape of the base 121 is a circular ring (as shown in fig. 3).

In one embodiment, the shape of the base 121 is bullet-shaped, the base 121 including annular side walls 1215 and a bottom wall 1216; the annular side wall 1215 encloses a receiving chamber 1210, the bottom wall 1216 is curved (e.g., hemispherical, semi-elliptical or paraboloid of revolution) and closes off one end of the annular side wall 1215 to form a closed end of the base 121; the other end of the annular side wall 1215 is an open end, forming a liquid inlet 1213. Alternatively, the base 121 is integrally formed for ease of processing and assembly.

In one embodiment, the base 121 is provided with a fluid inlet 1213 at only a second end thereof.

In one embodiment, only one liquid inlet 1213 is provided on the substrate 121, which is beneficial to reducing the heat dissipation area and improving the heat utilization rate.

In one embodiment, the substrate 121 is hollow, and the thickness of the substrate 121 is the same throughout the thickness range of 0.5mm-1mm.

In one embodiment, the substrate 121 is a rigid substrate, and the material is a porous material, and the disordered pores of the substrate 121 itself serve as the fluid guide holes 1214.

In one embodiment, substrate 121 is a rigid substrate that is a dense material and fluid-conducting holes 1214 are through holes that extend through fluid-absorbing surface 1211 and atomizing surface 1212.

Alternatively, the material of the substrate 121 is one of dense ceramic, glass, and silicon.

Alternatively, the equivalent diameter of the weep hole 1214 is 10 μm to 500 μm; the equivalent diameter of the liquid guide hole 1214 is smaller than 10 mu m, and the liquid supply amount is too small to meet the atomizing requirement; the equivalent diameter of the liquid-guiding hole 1214 is larger than 500 μm, which is liable to cause liquid leakage.

Alternatively, the cross-sectional shape of the fluid guide hole 1214 may be a circle, an elongated shape, or a polygon. When the cross-sectional shape of the liquid-guiding hole 1214 is circular, the equivalent diameter of the liquid-guiding hole 1214 refers to the diameter of the liquid-guiding hole 1214; when the cross-sectional shape of the weep hole 1214 is elongated, the equivalent diameter of the weep hole 1214 refers to the width of the weep hole 1214.

Optionally, along the axial direction of the liquid guiding hole 1214, the shape of each cross section of the liquid guiding hole 1214 is the same; and/or the longitudinal cross-sectional shape of the liquid guiding hole 1214 is rectangular or trapezoidal or stepped. It is understood that when the longitudinal cross-sectional shape of the liquid guide hole 1214 is rectangular, the equivalent diameter of the liquid guide hole 1214 is the same along the axial direction of the liquid guide hole 1214; when the longitudinal cross-sectional shape of the liquid guide hole 1214 is trapezoidal, the equivalent diameter of the liquid guide hole 1214 gradually and continuously decreases along the axial direction of the liquid guide hole 1214; when the longitudinal cross-sectional shape of the drain hole 1214 is stepped, the equivalent diameter of the drain hole 1214 gradually and stepwise decreases along the axial direction of the drain hole 1214.

In one embodiment, the wall surface of the accommodating cavity 1210 is provided with a capillary structure, and the capillary force of the capillary structure is smaller than that of the liquid guide hole 1214, so that the liquid guide hole 1214 is prevented from being difficult to absorb liquid from the capillary structure. In addition, by providing capillary structures on the lumen wall of the receiving cavity 1210, aerosol-generating substrate entering from the liquid inlet 1213 is delivered to the liquid-guiding aperture 1214 by the capillary structures on the lumen wall of the receiving cavity 1210; and the capillary structure makes the aerosol generating substrate only go in and out, effectively prevents the aerosol generating substrate from flowing back to the liquid storage cavity 11 after being preheated in the accommodating cavity 1210, reduces heat loss, and avoids the phenomenon that the aerosol generating substrate is not kept fresh due to repeated heating.

In one embodiment, the wall surface of the accommodating cavity 1210 is provided with a plurality of protrusions 1217 spaced apart, and capillary gaps formed between adjacent protrusions 1217 serve as the capillary structure described above. Illustratively, the protrusions 1217 are fins, and capillary gaps formed between adjacent fins serve as the capillary structure described above.

Optionally, a plurality of protrusions 1217 extend from the liquid inlet 1213 to the closed end of the base 121.

Optionally, a buffer cavity (not shown) is formed by matching and enclosing the end surfaces of the plurality of protrusions 1217 away from the wall surface of the accommodating cavity 1210, and the buffer cavity is communicated with the liquid inlet 1213.

Optionally, the plurality of protrusions 1217 are integrally formed with the base 121, which is advantageous for reducing assembly difficulty.

In one embodiment, the wall surface of the accommodating cavity 1210 is provided with a plurality of grooves, and the grooves serve as the capillary structure. Optionally, a plurality of grooves extend from the liquid inlet 1213 to the closed end of the base 121.

In one embodiment, the filling 1218 is disposed in the accommodating cavity 1210, and the filling 1218 has a capillary action as the capillary structure. Filler 1218 has a capillary force that is less than the capillary force of fluid-conducting holes 1214, avoiding difficulty in fluid-conducting holes 1214 drawing fluid from filler 1218. The filler 1218 includes at least one of fibers and particles. Illustratively, the filler 1218 is cotton, which is a fiber.

Optionally, the number of particles is a plurality. The plurality of particles are hydrophilic; or, the plurality of particles each have hydrophobicity; alternatively, a portion of the plurality of particles may be hydrophilic and another portion may be hydrophobic.

Alternatively, the size of the particles is 10nm-10mm.

Optionally, the material of the particles is glass.

Optionally, the plurality of particles are sintered or otherwise bonded together.

It should be noted that, the accommodating cavity 1210 may be provided with only the protrusion 1217 or the groove to form a capillary structure, or may be provided with only the filler 1218 to form a capillary structure, or may be provided with the protrusion 1217 or the groove and the filler 1218 to form a capillary structure, so that the aerosol-generating substrate can be effectively prevented from flowing back to the liquid storage cavity 11 after being preheated, and the flowing direction of the aerosol-generating substrate in the atomization process always flows from the wall surface of the accommodating cavity 1210 to the outer surface of the substrate 121. Illustratively, when the capillary structure is composed of a plurality of protrusions 1217 provided on the wall surface of the receiving chamber 1210 and a filler 1218, the filler 1218 is provided in the buffer chamber and/or the capillary gap formed by the plurality of protrusions 1217.

In one embodiment, at least the portion of the substrate 121 that is located at the atomizing face 1212 is doped with a conductive material so that it can spontaneously heat upon energization. Optionally, the entire outer surface portion of the substrate 121 is doped with a conductive material. Optionally, the entire substrate 121 is doped with a conductive material.

In one embodiment, the curved heating element 12 further includes a heating element 122, and the heating element 122 is disposed on the atomizing surface 1212 or embedded in the base 121.

Optionally, heating element 122 covers the entire atomizing face 1212. It will be appreciated that the base 121 includes annular side walls 1215 and a bottom wall 1216, and that the heating element 122 is disposed on the outer surfaces of the annular side walls 1215 and bottom wall 1216. The heating element 122 covers the whole atomization surface 1212, which may be that the projection of the heating element 122 on the atomization surface 1212 completely coincides with the atomization surface 1212, or that the temperature field generated by the heating element 122 may enable the whole atomization surface 1212 to atomize the aerosol generating substrate; when the heating element 122 covers the entire atomization face 1212, it means that the temperature field generated by the heating element 122 can make the entire atomization face 1212 atomize the aerosol-generating substrate, and the heating element 122 can expose a portion of the liquid guide hole 1214.

Alternatively, when the material of the base 121 is a dense material and the liquid guiding hole 1214 is a through hole penetrating the liquid absorbing surface 1211 and the atomizing surface 1212, the heating element 122 has a plurality of through holes, and the cross-sectional shape and size of the through hole is the same as the shape and size of the port of the liquid guiding hole 1214 on the atomizing surface 1212, and the axis of the through hole of the heating element 122 coincides with the axis of the liquid guiding hole 1214.

Alternatively, heating element 122 may be a metal film formed on atomizing face 1212 by deposition (e.g., vapor deposition) or printing. The metal film may be net-shaped or wire-shaped. It can be appreciated that, since the atomizing surface 1212 is curved, the problems of abrupt resistance and easy breakage of the metal film at the bending portion of the bending surface when the atomizing surface 1212 is the bending surface can be avoided.

It should be noted that, the atomization efficiency of the curved heating element 12 provided by the utility model is greater than 1mg/mw, and/or the atomization temperature of the curved heating element 12 is 200-300 ℃.

Referring to fig. 5, fig. 5 is a schematic diagram showing the structure of a curved heat-generating body according to a second embodiment.

The second embodiment of the curved heat-generating body 12 is basically the same in structure as the first embodiment of the curved heat-generating body 12, except that: the shape of the base 121 is different. Specifically, in the first embodiment of the curved heating element 12, the shape of the base 121 is bullet-shaped, that is, the atomizing surface 1212 includes a cylindrical surface and a curved surface for blocking one end of the cylindrical surface; in the second embodiment of the curved heat-generating body 12, the shape of the base 121 is a spherical cap, and its longitudinal section is a major arc.

In the second embodiment of the curved heat-generating body 12, the base 121 has a hollow structure, and the thickness of the base 121 is the same throughout. The base 121 is spherical crown-shaped, the cross section of the base 121 is circular, and the outer surface of the spherical crown-shaped base 121 is an atomization surface 1212. In order to facilitate alignment of the liquid inlet 1213 with the liquid outlet of the liquid storage chamber 11, the curved heat generating body 12 further includes an extension 123, and the extension 123 is a hollow cylinder, and an inner wall surface of the hollow cylinder is aligned with the liquid inlet 1213. The outer surface of the extension 123 is not provided with the heating element 122. Alternatively, the extension 123 is integrally formed with the base 121.

The radius of the atomizing face 1212 is R and the radius at the inlet 1213 is R. The area of the atomizing face 1212 is the spherical surface area minus the spherical cap surface area at the inlet 1213, and the area of the inlet 1213 is pi r ² . When the substrate 121 is hollow, the thickness D of the substrate 121 is the same and the range of thickness D is 0.5mm-1mm, the thickness D of the extension 123 is the same as the thickness D of the substrate 121, and r+D<The ratio of the area of the atomizing area 1212 to the area of the inlet 1213 is greater than 8, 1/2 xr. The liquid inlet 1213 is a heat radiation surface area of the curved heat generating body 12.

Referring to fig. 6, fig. 6 is a schematic structural view of a third embodiment of a curved heat-generating body.

The third embodiment of the curved heat-generating body 12 is basically the same in structure as the first embodiment of the curved heat-generating body 12, except that: the shape of the base 121 is different. Specifically, in the first embodiment of the curved heat-generating body 12, the shape of the base 121 is bullet-shaped; in the third embodiment of the curved heat-generating body 12, however, the shape of the base 121 is hemispherical.

In the third embodiment of the curved heat-generating body 12, the base 121 has a hollow structure, and the thickness of the base 121 is the same throughout. The radius of the atomizing face 1212 is R and the radius at the inlet 1213 is R. The area of the atomizing face 1212 is 2pi R ² The area of the liquid inlet 1213 is pi r ² . The difference between R and R is equal to the thickness of the substrate 121, which ranges from 0.5mm to 1mm. The ratio of the area of the atomizing face 1212 to the area of the liquid inlet 1213 is greater than 2. The liquid inlet 1213 is a heat radiation surface area of the curved heat generating body 12.

The shape of the base 121 is not limited to spherical, hemispherical, spherical crown with a major arc in longitudinal section, bullet-shaped, or bulb, but may be an irregular curved shape, so that the ratio of the area of the atomizing surface 1212 to the area of the radiating surface may be larger than 1, and the heat utilization rate may be improved.

The foregoing is only the embodiments of the present utility model, and therefore, the patent scope of the utility model is not limited thereto, and all equivalent structures or equivalent processes using the descriptions of the present utility model and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the utility model.

Claims (19)

1. A curved heat-generating body for use in an electronic atomizing device for atomizing an aerosol-generating substrate, comprising: the base body is provided with an atomization surface, a liquid suction surface and a containing cavity, and the liquid suction surface is a wall surface of the containing cavity; the atomizing surface is positioned on the outer surface of the matrix; the first end of the base body is a closed end, and the second end of the base body opposite to the first end is provided with a liquid inlet which is communicated with the accommodating cavity; the base body having a plurality of liquid-directing apertures for directing the aerosol-generating substrate from the liquid-absorbing surface to the atomizing surface;

the area of the atomizing surface is larger than the cross-sectional area of the liquid inlet, and the atomizing surface is a curved surface.

2. A curved heat-generating body as described in claim 1, wherein said base body is in the shape of a bulb, a sphere, a hemisphere, a crown with a major arc in longitudinal section, or a bullet shape.

3. A curved heat-generating body as described in claim 1, wherein the cross-sectional shape of said base body is one of a circular ring and an elliptical ring.

4. A curved heat-generating body as described in claim 1, wherein said base body includes annular side walls and a bottom wall; the bottom wall plugs one end of the annular side wall to form the closed end;

and/or, the matrix is integrally formed.

5. A curved heating body as claimed in claim 1, wherein the wall surface of said accommodation chamber is provided with a capillary structure having a capillary force smaller than that of said liquid-guiding hole.

6. A curved heat-generating body as described in claim 5, wherein the wall surface of said housing chamber is provided with a plurality of protrusions or grooves arranged at intervals, and capillary gaps or grooves formed between adjacent protrusions serve as said capillary structure.

7. A curved heat-generating body as defined in claim 6, wherein a plurality of said protrusions or recesses extend from said liquid inlet to said closed end.

8. A curved surface heating body as set forth in claim 6 wherein a buffer cavity is formed between the end faces of the wall surfaces of said plurality of protrusions away from said receiving cavity, said buffer cavity being in communication with said liquid inlet.

9. A curved heat-generating body as described in claim 6, wherein a plurality of said protrusions are integrally formed with said base body.

10. A curved heat-generating body as described in claim 6, wherein said accommodating chamber is provided therein with a filler comprising at least one of fibers and particles, said filler serving as said capillary structure.

11. A curved heat-generating body according to claim 1, wherein the material of the base body is a porous material, and the unordered pores of the base body itself serve as the liquid-guiding pores.

12. A curved heat-generating body as described in claim 1, wherein said base body is made of a dense material, and said liquid-guiding hole is a through hole penetrating said liquid suction surface and said atomizing surface.

13. A curved heat-generating body as described in claim 12, wherein said liquid-guiding hole has an equivalent diameter of 10 μm to 500 μm; and/or the cross section of the liquid guide hole is circular, strip-shaped or polygonal.

14. A curved heat-generating body as described in claim 12, wherein the shape of each cross section of said liquid-guiding hole is the same along the axial direction of said liquid-guiding hole; and/or the longitudinal section of the liquid guide hole is rectangular, trapezoid or stepped.

15. A curved heat-generating body as described in claim 1, further comprising a heat-generating element provided on said atomizing face or embedded in said base;

or, at least the part of the matrix located on the atomizing surface is doped with a conductive material.

16. A curved heat-generating body as described in claim 15, wherein said heat-generating element covers the entire outer surface of said base body.

17. A curved heat-generating body as described in claim 15, wherein said base body is made of a dense material, and said liquid-guiding hole is a through hole penetrating said liquid suction surface and said atomizing surface; the heating element is provided with a plurality of through holes, the cross section shape and the size of the through holes are the same as those of the port of the liquid guide hole on the atomization surface, and the axis of the through holes of the heating element coincides with the axis of the liquid guide hole.

18. An atomizer, comprising:

a reservoir for storing an aerosol-generating substrate;

the curved surface heating body is in fluid communication with the liquid storage cavity and is used for atomizing the aerosol generating substrate; the curved heat-generating body is a curved heat-generating body as described in any one of claims 1 to 17.

19. An electronic atomizing device, comprising:

a nebulizer, which is the nebulizer of claim 18;

and the host is used for providing electric energy for the operation of the curved heating body of the atomizer and controlling the curved heating body of the atomizer to atomize the aerosol generating substrate.