Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide an improved electronic atomization device, an atomizer and a heating component thereof.
The invention solves the technical problems by adopting the technical scheme that the heating component is constructed and used for an atomizer and comprises a porous body for absorbing liquid medium and a heating body for heating and atomizing the liquid medium absorbed into the porous body, wherein the porous body comprises a first surface and a second surface which are oppositely arranged, and the first surface is an atomizing surface for installing the heating body;
the second surface is inwards recessed to form a liquid guide hole for accommodating a liquid guide element, the liquid guide hole is provided with a bottom surface, the bottom surface of the liquid guide hole is a core atomization area in a projection area of the atomization surface, and the core atomization area is a concentrated distribution area of the heating element;
During normal operation, after the heating body heats for a preset time, the first average temperature of the core atomization area is higher than the second average temperature of the whole atomization surface.
In some embodiments, the first average temperature is 120-200 ℃, and the first average temperature is 20 ℃ or more above the second average temperature.
In some embodiments, the width of the heating element along the extending direction is uniform, and the core atomization area is positioned at the center of the atomization surface.
In some embodiments, the atomizing surface has a first width L1, and the core atomizing area has a second width L2 along an extension direction of the first width L1, and the second width L2 is 30% -85% of the first width L1.
In some embodiments, the second width L2 is 63% -70% of the first width L1.
In some embodiments, 40-90% of the heater is distributed within the core atomization zone.
In some embodiments, the porous body includes a first body and a second body in a stepped configuration, the first body having a cross-sectional area greater than a cross-sectional area of the second body, a side of the first body remote from the second body forming the atomizing face.
In some embodiments, the heating component further comprises a first electrode and a second electrode which are respectively connected to two ends of the heating body, and the first electrode and the second electrode are diagonally arranged on the atomization surface.
In some embodiments, the heating element is symmetrically disposed with respect to a center point of the atomizing face, the heating element including a first straight section, a second straight section, and a connecting section connecting the first straight section and the second straight section in series, the first straight section being parallel to the second straight section;
The connecting section comprises a first circular arc section connected with the first straight section, a second circular arc section connected with the second straight section, and a first inclined straight section connecting the first circular arc section and the second circular arc section in series, wherein the first circular arc section and the second circular arc section are positioned on the same circumference, and the first circular arc section and the second circular arc section are close to or positioned at the edge of the core atomization area.
In some embodiments, the heating element is symmetrically disposed with respect to a center point of the atomizing face, the heating element including a first straight section, a second straight section, and a connecting section connecting the first straight section and the second straight section in series, the first straight section being parallel to the second straight section;
the connecting section comprises at least one third straight section and at least one first curved section connected in series with the at least one third straight section, the third straight section being perpendicular to the first straight section.
In some embodiments, the heating element is symmetrically disposed with respect to a center point of the atomizing face, the heating element including a first straight section, a second straight section, and a connecting section connecting the first straight section and the second straight section in series, the first straight section being parallel to the second straight section;
The connecting section comprises at least one second inclined straight section, at least one third inclined straight section and at least one fourth straight section which is used for connecting the at least one second inclined straight section with the at least one third inclined straight section in series, the fourth straight section is parallel to the first straight section, the second inclined straight section and the third inclined straight section are arranged in a staggered mode, and the included angles among the second inclined straight section, the third inclined straight section and the fourth straight section are equal.
The invention also provides an atomizer comprising the heating assembly, a liquid storage cavity for storing liquid medium and a liquid guide element for connecting the liquid storage cavity and the heating assembly.
The invention also provides an electronic atomization device which comprises a power supply device and the atomizer, wherein the power supply device is electrically connected with the atomizer.
The heating component has the advantages that when the heating component is heated, the liquid medium volatilizes faster due to higher temperature of the core atomization area, so that the liquid medium outside the core atomization area flows to the core atomization area and gathers towards the core atomization area, the condition of liquid leakage can be avoided, liquid drops are not inhaled when a user inhales mist, and the user experience is improved.
Detailed Description
For a clearer understanding of technical features, objects and effects of the present invention, a detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.
Fig. 2-4 show a heating assembly 10 according to some embodiments of the present invention, where the heating assembly 10 may be applied to a heating atomizer for heating and atomizing a liquid medium such as a smoke liquid, a liquid medicine, etc., and may include a porous body 11 for sucking the liquid medium and a heating body 12a for heating and atomizing the liquid medium sucked into the porous body 11. The porous body 11 includes oppositely disposed first and second faces 1121. Wherein the first surface is an atomization surface 1111 for mounting the heating element 12a, and the second surface 1121 is recessed inward to form a liquid guiding hole 1122 for accommodating the liquid guiding member 20 (see fig. 15). The shape of the liquid guide hole 1122 is not limited to a circular hole, and may be other shapes such as a square hole and a rectangular hole.
The porous body 11 may include a first substrate 111 and a second substrate 112 having a stepped shape in some embodiments, and the cross-sectional area of the first substrate 111 is larger than that of the second substrate 112, so that a positioning step is formed between the first substrate 111 and the second substrate 112, thereby facilitating installation and positioning of the heat generating component 10. Preferably, a side of the first substrate 111 remote from the second substrate 112 forms the atomizing surface 1111, so that the area of the atomizing surface 1111 can be increased without changing the space occupied by the heat generating component 10.
In the present embodiment, each of the first base 111 and the second base 112 has a substantially rectangular parallelepiped shape, and the atomizing surface 1111 is formed on the rectangular surface of the first base 111. Further, the length of the first substrate 111 may be greater than the length of the second substrate 112, and the width of the first substrate 111 may be comparable to the width of the second substrate 112. In other embodiments, the cross-sections of the first substrate 111 and the second substrate 112 may be circular, oval, diamond, square, or other shapes.
The liquid guiding hole 1122 has a bottom surface 1123, and the projection area of the bottom surface 1123 of the liquid guiding hole 1122 on the atomizing surface 1111 is a core atomizing area a, which is a concentrated distribution area of the heating element 12 a. In normal operation, after the heating body 12a is heated for a preset time, the first average temperature of the core atomizing area a is higher than the second average temperature of the entire atomizing face 1111.
The atomizing face 1111 may generally include a core atomizing area a and a rim atomizing area B located outside of the core atomizing area a, which may generally be located at a central location of the atomizing face 1111. The liquid guiding element guides the liquid medium in the liquid storage cavity of the atomizer to the porous body 11, the liquid is outwards diffused by taking the bottom surface 1123 of the liquid guiding hole 1122 as a center, the atomization surface 1111 corresponds to the bottom surface 1123 to form a core atomization area A, and the liquid is outwards diffused to form an edge atomization area B. When the heating component 10 heats, because the temperature of the core atomization area a is higher, the liquid medium volatilizes faster, besides the liquid medium of the liquid guide element, part of the liquid medium of the edge atomization area B flows to the core atomization area a and gathers to the core atomization area a, so that the edge atomization area B is limited in a certain range, the condition of liquid leakage can be avoided, liquid drops can not be inhaled when a user inhales mist, and the user experience is improved.
In some embodiments, the temperature difference between the first average temperature and the second average temperature may be configured to enable a portion of the liquid medium of the edge atomizing area B to flow to the core atomizing area a. Preferably, the first average temperature may be 120-200 ℃, and the first average temperature may be 20 ℃ or more higher than the second average temperature.
In general, the width of the heat generating body 12a in the extending direction is uniform, and the distribution density of the heat generating body 12a in the core atomization region a is greater than that in the edge atomization region B outside the core atomization region a. The distribution density may be a ratio of an area occupied by the heat generating body 12a in the core atomization region a (or the edge atomization region B) to an area of the core atomization region a (or the edge atomization region B) in some embodiments.
Typically, 40-90% of the heating element 12a is distributed within the core atomization zone A. The atomizing surface 1111 has a first width L1, the core atomizing area a has a second width L2 along the extending direction of the first width L1, and the second width L2 may be 30% -85% of the first width L1. Preferably, the second width L2 is about 2/3 of the first width L1, which may typically be selected between 63% -70%.
The two ends of the heating body 12a may be respectively provided with a first electrode 141 and a second electrode 142, which are respectively electrically connected with the positive electrode and the negative electrode of the power supply device. Typically, the edge atomizing area B is located within the space defined by the first and second electrodes 141, 142.
The heating element 10 may adopt a side air intake or bottom air intake mode. When the heating component 10 is side air-in, the first electrode 141 and the second electrode 142 can be respectively arranged on opposite angles of the atomization surface 1111 to optimize the conveying effect of the smoke during side air-in, effectively prevent the obstruction of the first electrode 141 and the second electrode 142 to the airflow, avoid the smoke from being detained in the atomization cavity, and improve the smoke flow efficiency.
The heating element 12a may be a heating film or a heating wire, and the material thereof may be metal. The two ends of the heating body 12a may be provided with pads 13 for mounting the first and second electrodes 141 and 142, respectively. Preferably, the heat generating body 12a is a heat generating film, which may be printed on the atomizing surface 1111 of the porous body 11 using an electronic paste. When the porous body 11 has a sintered structure, the heat generating body 12a may be integrally formed with the porous body 11 by sintering.
In some embodiments, the heat generating film may include a first cover film and a second cover film sequentially formed on the atomizing face 1111. The first cover film and the second cover film may be porous films. The first covering film can be made of titanium, zirconium, titanium-aluminum alloy, titanium-zirconium alloy, titanium-molybdenum alloy, titanium-niobium alloy, iron-aluminum alloy or tantalum-aluminum alloy, etc., and the second covering film can be made of platinum, palladium-copper alloy, gold-silver-platinum alloy, gold-silver alloy, palladium-silver alloy or gold-platinum alloy, etc. Preferably, the first cover film is a titanium zirconium alloy film, and the second cover film is a gold-silver alloy film.
The porous body 11 may be made of a hard capillary structure such as porous ceramics, porous glass, or the like. Preferably, the porous body 11 is made of porous ceramic. The porous ceramic has high temperature resistance and stable chemical property, can not chemically react with smoke liquid, is an insulator, can not be electrically connected with a heating element 12a arranged on the porous ceramic to cause short circuit and other problems, and is convenient to manufacture and low in cost.
In some embodiments, the micropores on the porous ceramic may have a pore size ranging from 1 μm to 100 μm. The average pore size of the porous ceramic may be 10-35 μm. Preferably, the porous ceramic has an average pore size of 20-25 μm.
Preferably, the volume of micropores with a pore diameter of 5 μm to 30 μm on the porous ceramic accounts for more than 60% of the volume of all micropores on the porous ceramic. The volume of micropores with the pore diameter of 10-15 mu m in the porous ceramic accounts for more than 20% of the volume of all micropores on the porous ceramic, and the volume of micropores with the pore diameter of 30-50 mu m in the porous ceramic accounts for about 30% of the volume of all micropores on the porous ceramic.
The porous ceramic may have a porosity of 30% to 70%, the porosity referring to the ratio of the total volume of the minute voids within the porous medium to the total volume of the porous medium. The porosity can be adjusted according to the components of the tobacco juice, for example, the viscosity of the tobacco juice is high, and the porosity can be higher so as to ensure the liquid guiding effect. Preferably, the porous ceramic has a porosity of 50-60%.
The heat generating body 12a may be symmetrically disposed with respect to the center point of the atomizing surface 1111. In this embodiment, the atomizing face 1111 is substantially rectangular, and the core atomizing area a is circular.
The heat-generating body 12a may include a first straight section 121a, a second straight section 122a, and a connection section connecting the first straight section 121a and the second straight section 122a in series. The first and second straight sections 121a and 122a may be parallel and may be disposed along the longitudinal direction of the atomizing face 1111.
The connection section may include a first circular arc section 123a connected to the first straight section 121a, a second circular arc section 125a connected to the second straight section 122a, and a first diagonal section 124a connecting the first circular arc section 123a and the second circular arc section 125a in series. The first arc segment 123a and the second arc segment 125a are located on the same circumference, and the first arc segment 123a and the second arc segment 125a may be close to or located at the edge of the core atomization area a. The two ends of the first inclined straight section 124a can be connected with the first arc section 123a and the second arc section 125a through a straight line or an arc.
Fig. 6 shows a heat-generating body 12b in some embodiments of the invention as an alternative to the heat-generating body 12a of the heat-generating component 10 described above. The heat generating body 12b may include a first straight section 121b, a second straight section 122b, and a connecting section connecting the first straight section 121b and the second straight section 122b in series, and the first straight section 121b may be parallel to the second straight section 122b and may be disposed along the longitudinal direction of the atomizing surface 1111.
The connection section may include at least one third flat section 123b and at least one first curved section 124b connected in series with the at least one third flat section 123b, and the third flat section 123b may be perpendicular to the first flat section 121b. A substantial portion of the connecting section may be disposed in the core atomizing area a, and the distance of the connecting section along the length or width of the atomizing face 1111 may be equivalent or substantially equivalent to the diameter of the core atomizing area a.
Fig. 8 shows a heat generating body 12c in some embodiments of the invention as an alternative to the heat generating body 12a of the heat generating assembly 10 described above. The heat generating body 12c may include a first straight section 121c, a second straight section 122c, and a connecting section connecting the first straight section 121c and the second straight section 122c in series, and the first straight section 121c may be parallel to the second straight section 122c and may be disposed along the longitudinal direction of the atomizing surface 1111.
The connecting section may include at least one second diagonal segment 123c, at least one third diagonal segment 125c, and at least one fourth straight segment 124c connecting the at least one second diagonal segment 123c and the at least one third diagonal segment 125c in series. The fourth straight section 124c may be parallel to the first straight section 121c, the second inclined straight section 123c and the third inclined straight section 125c are staggered, and the included angles between the second inclined straight section 123c and the third inclined straight section 125c and the fourth straight section 124c are equal, and the second inclined straight section 123c and the third inclined straight section 125c located at the outermost periphery of the connecting section are respectively connected with the two bonding pads 13. A substantial portion of the connecting section may be disposed in the core atomizing area a, and the distance of the connecting section along the length or width of the atomizing face 1111 may be equivalent or substantially equivalent to the diameter of the core atomizing area a.
In the present embodiment, the connection section includes two second inclined straight sections 123c, two third inclined straight sections 125c, and three fourth straight sections 124c connecting the two second inclined straight sections 123c and the two third inclined straight sections 125c in series.
Fig. 10 shows a heat generating body 12d in some embodiments of the invention as an alternative to the heat generating body 12a of the heat generating component 10 described above. The heat generating body 12d may include a first straight section 121d, a second straight section 122d, and a connecting section connecting the first straight section 121d and the second straight section 122d in series, and the first straight section 121d may be parallel to the second straight section 122d and may be disposed along the longitudinal direction of the atomizing surface 1111.
The connection section may include a second curved section 123d connected to the first straight section 121d, a third curved section 125d connected to the second straight section 122d, and a fifth straight section 124d connecting the second curved section 123d and the third curved section 125d in series, and the fifth straight section 124d is parallel to the first straight section 121 d. The first flat section 121d, the second curved section 123d, the fifth flat section 124d, the third curved section 125d, and the second flat section 122d are sequentially connected in series to form a substantially S-shaped structure.
Fig. 5, 7 and 9 show temperature field distribution diagrams of the atomizing surface 1111 after the heating elements shown in fig. 4, 6 and 8 are heated for 3s, respectively. According to simulation experiments, the first average temperature of the heating body in the core atomization area A is 120-200 ℃, and the temperature of the edge atomization area B is below 120 ℃. When a user smokes, as the temperature of the core atomization area A is high enough, the smoke liquid is volatilized very fast, so that the smoke liquid in the edge atomization area B is gathered towards the core atomization area A, the occurrence of liquid leakage can be avoided, liquid drops can not be inhaled when the user inhales fog, and the user experience is improved.
Further, the shape and the length of the heating element can be changed, so that the temperature of the heating element in a dry heating state can be effectively reduced, the thermal stress between the heating element and the porous body can be further reduced, and the deformation of the heating element and the porous body can be further reduced. Generally, the shape of the heating element may be configured such that the area of the core atomization area a that needs to be heated by the heating element per unit length is substantially uniform, so that the local temperature of the porous body is prevented from being too high, the thermal stress between the heating element and the porous body is reduced, and the deformation amounts of the heating element and the porous body are reduced.
Fig. 11 and 12 show stress contrast diagrams and displacement (deformation) contrast diagrams of the heat generating component shown in fig. 1, 4 and 10, respectively, in which L11, L12 and L13 are stress distribution curves of the heat generating component shown in fig. 1, 10 and 4 along the arc length, and L21, L22 and L23 are displacement distribution curves of the heat generating component shown in fig. 1, 10 and 4 along the arc length, respectively. Among them, fig. 1 is a heat generating component 10e in some embodiments of the prior art, and the shape of a heat generating body 12e of the heat generating component 10e is similar to that of a heat generating body 12d shown in fig. 10. In the simulation test, the overall length of the heat generating component shown in FIG. 1 was 9.05mm and the width was 4.05mm, the overall length of the heat generating component shown in FIG. 4 was 8mm and the width was 4mm, and the overall length of the heat generating component shown in FIG. 10 was 10mm and the width was 6mm. As can be seen in connection with fig. 11-12, the heat generating component of fig. 1 has the highest stress and deflection, and the heat generating component of fig. 4 has the lowest stress and deflection. In the simulation experiment, by adopting the heating element of the heating element shown in fig. 6 and 8 in the invention, the effect similar to the stress and deformation of the heating element shown in fig. 4 can be achieved, and the lower stress and deformation of the heating element can be realized.
Fig. 13-15 illustrate an electronic atomization device in accordance with some embodiments of the present invention that may be used as an electronic cigarette, a medical atomizer, and the like.
The electronic atomization device can comprise an atomizer 1 and a power supply device 2, wherein the power supply device 2 is electrically connected with the atomizer 1. The atomizer 1 and the power supply means 2 may in some embodiments be detachably connected together by magnetic attraction, screwing or the like.
The atomizer 1 may comprise a liquid reservoir 31 for receiving a liquid medium, a heat generating component 10, and a liquid guiding element 20 connecting the liquid reservoir 31 and the heat generating component 10. After the atomizer 1 and the power supply device 2 are assembled, the power supply device 2 supplies power to a heating element of the heating component 10 in the atomizer 1, and the heating element heats and atomizes a liquid medium after heating so as to be sucked by a user. It will be appreciated that any of the heating elements described above may be suitable for use in the electronic atomizing device.
The atomizer 1 may in some embodiments further comprise a reservoir 30 for containing a liquid medium. The interior cavity of the reservoir 30 forms a reservoir chamber 31. The length and shape of the liquid guiding element 20 can be adjusted as desired. One end of the liquid guiding element 20 may extend into the liquid storage tank 30, and the other end abuts against the bottom surface of the liquid guiding hole 1122, so as to guide the liquid medium in the liquid storage tank 30 into the porous body 11, and the liquid medium diffuses outwards with the bottom surface of the liquid guiding hole 1122 as the center.
The liquid guiding element 20 may be made of a porous material, which may comprise at least one honeycomb hole 21 arranged in a honeycomb shape. By controlling the size and number of the honeycomb holes 21, the liquid guiding amount of the liquid guiding member 20 can be strictly controlled. In general, the size and number of the honeycomb holes 21 may be adjusted according to the viscosity of the liquid medium so that the liquid guiding amount of the liquid guiding member 20 matches the atomization amount of the heating element.
It will be appreciated that the above technical features may be used in any combination without limitation.
The foregoing examples have been given solely for the purpose of illustrating preferred embodiments of the invention and are not to be construed as limiting the scope of the invention, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit of the invention, and it is intended that all such changes and modifications be included within the scope of the invention as defined by the appended claims.