Disclosure of Invention
In order to solve the above problems, the present invention provides a heating element and an electronic atomizing device, which can reduce heat dissipation and effectively improve heat utilization rate when the heating element heats tobacco.
In order to solve the technical problems, the invention adopts a technical scheme that: there is provided a heating assembly, the heating assembly comprising: the heating device comprises a heating matrix, a heating module and a heat-conducting module, wherein the heating matrix comprises a heating area and a non-heating area along the length direction of the heating matrix, and the heat conductivity coefficient of the heating area is larger than that of the non-heating area; and the conductive track is arranged on the heating matrix, at least covers the heating area and is used for heating the heating area when the power is on.
Wherein the heating area and the non-heating area are connected by high-temperature sintering to form the heating matrix.
Wherein the heating region is made of at least one material selected from silicon carbide, silicon nitride and aluminum nitride.
Wherein the non-heating region is made of at least one material selected from silicon oxide ceramic, zirconium oxide ceramic, silicon nitride ceramic, cordierite ceramic, silicon carbide ceramic, aluminum titanate ceramic, spodumene ceramic and mullite ceramic.
The heating matrix is made of a metal material, and an insulating layer is arranged between the heating matrix and the conductive track.
Wherein the conductive trace comprises: the heating track is arranged in the heating area; and the conductive circuit is arranged in the non-heating area, is connected with the heating track and an external power supply and is used for providing electric energy for the heating track.
Wherein the conductive trace comprises: the heating tracks are arranged on the first side surface of the heating substrate and are mutually isolated; and the multiple groups of conductive circuits are respectively and correspondingly connected with the multiple groups of heating tracks and are used for independently controlling the multiple groups of heating tracks.
Wherein, the multiunit heating orbit includes at least: the first heating track is arranged on the first side surface of the heating matrix and is far away from one end of the non-heating area along the length direction of the heating matrix;
the second heating track and the third heating track are arranged on the first side surface of the heating substrate and at the same horizontal position along the length direction of the heating substrate, and are positioned at two ends of the heating substrate in the width direction.
At least part of the plurality of groups of conductive circuits are arranged on a second side surface of the heating substrate opposite to the first side surface, and at least part of the plurality of groups of heating tracks are connected through holes on the heating substrate.
In order to solve the technical problems, the invention adopts another technical scheme that: an electronic atomization device is provided, which comprises a shell and any one of the heating components, wherein the heating components are arranged in the shell.
The embodiment of the invention has the beneficial effects that: unlike the prior art, the heat generating component provided by the invention comprises: the heating device comprises a heating matrix, a heating module and a heat-conducting module, wherein the heating matrix comprises a heating area and a non-heating area along the length direction of the heating matrix, and the heat conductivity coefficient of the heating area is larger than that of the non-heating area; and the conductive track is arranged on the heating matrix, at least covers the heating area and is used for heating the heating area when the power is on. Through the mode, the heating matrix is divided into two materials with different heat conductivity coefficients, so that heat dissipation can be reduced when the heating component heats tobacco, and the heat utilization rate can be effectively improved.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of an electronic atomization device provided by the present invention, where the electronic atomization device 10 includes a battery assembly 100 and a heating module 200, the battery assembly 100 is used for providing electric energy for heating the heating module 200 or providing electric energy for the whole electronic cigarette, and the heating module 200 is used for heating an aerosol generating substrate to generate an aerosol; the heat generating module 200 is detachably connected to the battery assembly 100, for example, the heat generating module 200 is detachably fixed to one end of the battery assembly 100.
Optionally, in some embodiments, the electronic atomization device 10 may further be provided with a fixed cover (not shown), which may be used to cover the heat generating module 200 and cooperate with the heat generating module 200.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a heating module in an embodiment of an electronic atomizing device according to the present invention, and the heating module 200 in this embodiment includes a fixing base 210, a heating component 220, a buffer 230, a glue portion (not shown) and a housing (not shown). The heating assembly 220 converts electric energy into thermal energy under the action of the battery assembly 100, and heats a material to be heated, and a specific structure of the heating assembly 220 will be described in detail in the following embodiments. The fixing base 210 may be used to fix the heat generating component 220, and the heat generating component 220 is fixed to one end of the battery assembly 100 through the fixing base 210; the buffer 230 is used for providing a buffering function when the heating element 220 is fixed on the fixing base 210; the glue part can fix the heating component 220 and the fixing base 210 to each other; the fixing base 210, the heating component 220, the buffer 230 and other components are all disposed in the housing.
Referring to fig. 3 and 4, fig. 3 is a schematic structural diagram of an embodiment of a heat generating component provided in the present invention, and fig. 4 is a schematic structural diagram of a heat generating substrate in the embodiment of fig. 3.
In the present embodiment, the heat generating component 220 includes a heat generating base 221 and conductive traces 222. As shown in fig. 4, the heat generating substrate 221 includes a heated region 2211 and a non-heated region 2212 along the substrate length direction, and the heated region 2211 and the non-heated region 2212 are connected by high-temperature sintering to form the heat generating substrate 221.
Wherein the thermal conductivity of the material of the heated region 2211 is greater than the thermal conductivity of the non-heated region 2212. Specifically, the heating region 2211 is made of at least one material of silicon carbide, silicon nitride, and aluminum nitride having a thermal conductivity of 10W/m·k or more; the non-heating region 2212 is made of at least one material of a silicon oxide ceramic, a zirconium oxide ceramic, a silicon nitride ceramic, a cordierite ceramic, a silicon carbide ceramic, an aluminum titanate ceramic, a spodumene ceramic, and a mullite ceramic.
Optionally, in some embodiments, the heating substrate 221 may be further made of two metal materials with different thermal conductivity coefficients, where the two metal materials with different thermal conductivity coefficients correspond to the heating area 2211 and the non-heating area 2212, respectively, and at this time, a glaze layer or other insulating layer may be first disposed on the heating substrate 221, and then an electrically conductive trace is silk-screened on the heating substrate 221 with the insulating layer; here, the insulating layer may be a part of the heat generating substrate 221, and at this time, the insulating layer is made of two materials having different thermal conductivity coefficients and corresponds to the heating region 2211 and the non-heating region 2212 as well.
Referring to fig. 3, the conductive trace 222 includes a heating trace 2221 and a conductive line 2222, and the conductive trace 222 is integrally disposed on the heat generating substrate 221. The heating trace 2221 is disposed in a heating region 2211 corresponding to the heating substrate 221, and the conductive line 2222 is disposed in a non-heating region 2212 corresponding to the heating substrate 221. One end of the conductive trace 2222 is connected to the heating trace 2221, and the other end is connected to a connector 223 for connecting the battery pack 100 for supplying electric power to the conductive trace 222.
The heating track 2221 may be made of ferromagnetic or ferrimagnetic material with strong magnetic permeability, and may be specifically made of carbon steel, adhesive, cobalt, nickel, stainless steel, seamless steel tube, alloy, etc.; the conductive line 2222 may be a silver line, a nickel line, a copper line electrode line, or the like, without being particularly limited thereto.
In the conductive trace 222, the width of the heating trace 2221 may be smaller than the width of the conductive trace 2222, and the resistance of the wire is related to the cross section when the length and the resistivity of the wire are unchanged according to the resistance law formula. In this embodiment, since the conductive trace 222 is disposed on the heat generating substrate 221, it can be considered that the thickness of the entire conductive trace 222 is uniform, that is, the thickness of the heating trace 2221 is equal to the thickness of the conductive line 2222, and since the width of the heating trace 2221 is smaller, the cross-sectional area of the heating trace 2221 is smaller than that of the conductive line 2222, and the heat generated by the heating trace 2221 will be greater than that generated by the conductive line 2222 according to the law of resistance and the law of joule.
Optionally, in this embodiment, the length of the heating area 2211 is greater than the length of the non-heating area 2212, that is, the length of the heating track 2221 is greater than the length of the conductive line 2222, and since the thermal conductivity of the heating area 2211 is greater than that of the non-heating area 2212, at this time, the heat generated by the whole heating area 2211 will be far greater than that of the non-heating area 2212, so that the heating area 2211 can be quickly heated to improve the user experience, and the low thermal conductivity and low heat generation of the non-heating area 2212 can effectively reduce the dissipation of heat, and improve the heat utilization rate.
Optionally, in some embodiments, the width of the heating track 2221 may be increased appropriately to increase the heating surface area of the entire heating track 2221, so that the generated heat can heat the tobacco in a larger range, and avoid the heat being too concentrated to uniformly heat the tobacco.
Optionally, in some embodiments, the heating track 2221 and the conductive line 2222 may be made of different materials, so that the resistivity of the heating track 2221 is greater than the resistivity of the conductive line 2222, that is, the heating region 2211 generates heat greater than the non-heating region 2212. Or on the basis that the width of the heating track 2221 is smaller than that of the conductive line 2222, the resistivity of the heating track 2221 is set to be larger than that of the conductive line 2222, so that the heat of the heating area 2211 is further increased, and the effect of improving the heat utilization rate is achieved.
Compared with the prior art, the heating element is divided into two different materials with heat conductivity coefficients, so that heat loss can be reduced when the heating element heats tobacco, and the heat utilization rate can be effectively improved.
Referring to fig. 5 and 6, fig. 5 is a schematic structural diagram of a first side of another embodiment of a heat generating component according to the present invention, and fig. 6 is a schematic structural diagram of a second side of the heat generating component according to the embodiment of fig. 5.
In this embodiment, conductive traces 222 include multiple sets of heating traces 2223 and multiple sets of conductive traces 2224. The plurality of groups of heating tracks 2223 are all arranged on the first side surface of the heating substrate 221, and the plurality of groups of heating tracks 2223 are mutually isolated and arranged corresponding to the heating area 2211; in the present embodiment, the plurality of sets of heating traces 2223 include at least a first heating trace 22231, a second heating trace 22232, and a third heating trace 22233.
The first heating track 22231 is disposed on the first side surface of the heating substrate 221, and specifically disposed at an end of the first side surface along the length direction of the heating substrate 221, which is far away from the non-heating area 2212; the second heating trace 22232 and the third heating trace 22233 are disposed adjacent to the first heating trace 22231 and are disposed at the same horizontal position in the longitudinal direction of the heat generating substrate 221 at both ends in the width direction of the heat generating substrate 221, so that the heating range of the heating trace 2223 is made larger, thereby improving the heat utilization rate. It should be noted that the multiple sets of heating traces 2223 shown in fig. 5 and the following are merely illustrative of the areas where specific heating traces exist, and do not represent the specific structure of the heating traces.
The multiple groups of conductive lines 2224 are respectively connected with the multiple groups of heating tracks 2223 correspondingly and are used for independently controlling the multiple groups of heating tracks 2223, and each group of conductive lines 2224 comprises two sub-conductive lines; at least a portion of the conductive wires 2224 are disposed on a first side of the heat generating substrate 221, the remaining portion of the conductive wires 2224 are disposed on a second side of the heat generating substrate 221 as shown in fig. 6, by disposing at least two openings 2225 on the heat generating substrate, at least a portion of the conductive wires 2224 on the second side are connected to at least a portion of the plurality of groups of heating traces 2223 on the first side through the at least two openings 2225, and the conductive wires 2224 are connected in series, referring specifically to fig. 7, fig. 7 is a schematic cross-sectional view of the heat generating substrate 221 in this embodiment, at this time, the heating area 2211 of the heat generating substrate 221 may be made of an insulating material for avoiding a short circuit when the conductive wires 2224 after opening pass through the heat generating substrate 221; in this embodiment, the conductive trace 2224 on the second side is specifically connected to the first heating trace 22231.
Alternatively, among the three groups of heating traces 2223 of the present embodiment, the number of heating traces 2223 of the first heating trace 22231 is at least 1, and is 1 in the present embodiment; the number of the heating traces 2223 of the second heating trace 22232 and the third heating trace 22233 is at least 2, in the present embodiment, 2, and are juxtaposed in the longitudinal direction of the heat generating substrate 221; only the specific number and location of the heating tracks 2223 in this embodiment are shown, and modifications to the heating tracks 2223 by those skilled in the art without any inventive effort are within the scope of the present invention.
Further, the three groups of heating tracks 2223 may implement segmented heating in the length direction of the heat-generating substrate 221, for example, the first heating track 22231 generates the largest amount of heat, the second heating track 22232 and the third heating track 22233 generate the smallest amount of heat in the length direction of the substrate, and the second and third heating tracks themselves include the plurality of heating tracks 2223 generating the smallest amount of heat in the length direction; or the whole of the plurality of groups of heating tracks 2223 adopts a big-small staggered arrangement mode for generating heat; or the second heating track and the third heating track are arranged side by side in the width direction of the substrate in different heat generation modes; the tobacco heating device can be specifically arranged according to actual conditions so as to heat tobacco better.
In addition, in this embodiment, printing of the conductive line 2224 may be performed in the form of paste printing.
Referring to fig. 8, fig. 8 is a schematic structural diagram of a heat generating component according to another embodiment of the present invention. The heat generating component 220 of the present embodiment is different from the heat generating component 220 in fig. 5 and 6 described above in that: in the heating element 220 of the present embodiment, the conductive lines 2224 connected to the plurality of groups of heating traces 2223 are all disposed on the same side of the heating substrate 221, that is, the conductive lines 2224 connected to the first heating trace 22231 are disposed on the first side of the heating substrate 221, so as to control the first heating trace 22231, at this time, the structure of the whole heating element 220 becomes compact, and the heat generation amount and the utilization rate are improved. Other parts of the heat generating component 220 are the same as those of the heat generating components of fig. 5 and 6, and are not described herein.
Compared with the prior art, the heating element is divided into two different materials with heat conductivity coefficients, so that heat loss can be reduced when the heating element heats tobacco, and the heat utilization rate can be effectively improved.
The foregoing description is only of embodiments of the present invention, and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.