CN115736365A - Heating element and electronic atomization device - Google Patents
Heating element and electronic atomization device Download PDFInfo
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- CN115736365A CN115736365A CN202211395293.9A CN202211395293A CN115736365A CN 115736365 A CN115736365 A CN 115736365A CN 202211395293 A CN202211395293 A CN 202211395293A CN 115736365 A CN115736365 A CN 115736365A
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Abstract
The application relates to a heating component and an electronic atomization device, wherein the heating component comprises a heating part, a first electrode layer and a second electrode layer, at least part of the first electrode layer is arranged on the outer peripheral surface of one axial end of the heating part, and at least part of the second electrode layer is arranged on the outer peripheral surface of the other axial end of the heating part; the heating element is an electric conductor, and current flowing from one of the first electrode layer and the second electrode layer to the other electrode layer along the self axial direction is formed in the heating element. Set up first electrode layer and second electrode layer respectively at the axial relative both ends of the piece that generates heat, first electrode layer and second electrode layer access circuit in the back of circular telegram, alright form on the piece that generates heat along the piece axial that generates heat, by the electric current of one in first electrode layer and the second electrode layer flow to another person, need not set up the recess that runs through the thickness direction like traditional the piece that generates heat and form the current path of U-shaped, the piece mechanical strength that generates heat is better, is difficult to the fracture.
Description
Technical Field
The application relates to the technical field of atomization, in particular to a heating component and an electronic atomization device.
Background
The aerosol is a colloidal dispersion system formed by dispersing small solid or liquid particles in a gas medium, and the aerosol can be absorbed by a human body through a respiratory system, so that a novel alternative absorption mode is provided for a user, for example, an atomization device which can bake and heat an aerosol generating substrate of herbs or pastes to generate the aerosol is applied to different fields, and the aerosol which can be inhaled is delivered to the user to replace the conventional product form and absorption mode.
Generally, aerosol is generated substrate and is atomized into aerosol through the piece that generates heat in the electron atomizer, and in the related art, the integral type piece that generates heat can self electrically conduct generate heat and heat atomizing aerosol, and offers the recess on the piece that generates heat and form the electric current that makes the piece that generates heat generate heat, but the recess that directly offers on the piece that generates heat runs through along the thickness direction of the piece that generates heat and sets up, makes the mechanical strength of the piece that generates heat lower, and the piece that generates heat breaks easily.
Disclosure of Invention
Accordingly, it is desirable to provide a heating element and an electronic atomizing device, which can solve the problem of low mechanical strength of the heating element.
A heating component comprises a heating element, a first electrode layer and a second electrode layer, wherein the first electrode layer is at least partially arranged on the outer peripheral surface of one axial end of the heating element, and the second electrode layer is at least partially arranged on the outer peripheral surface of the other axial end of the heating element;
the heating element is an electric conductor, and the heating element can electrically conduct the first electrode layer and the second electrode layer.
The heating component can be electrified to generate heat as a conductive piece so as to heat and atomize the aerosol generating substrate sleeved on the heating component. And, set up first electrode layer and second electrode layer respectively at the axial relative both ends of the piece that generates heat and come as the electric connecting portion of connecting the positive and negative electrode, like this first electrode layer and second electrode layer access circuit in the back of circular telegram, alright form along the piece axial that generates heat on the piece that generates heat, by the electric current of one flow to the other in first electrode layer and the second electrode layer, form linear current path through setting up first electrode layer and second electrode layer respectively at the axial both ends of the piece that generates heat like this, need not set up the recess that runs through the thickness direction like traditional piece that generates heat and form the current path of U-shaped, the piece mechanical strength that generates heat is better, be difficult to the fracture.
In one embodiment, a hollow cavity is formed in the heating element along the axial direction of the heating element.
In one embodiment, the heating element comprises an open end and a closed end which are oppositely arranged along the axial direction of the heating element, and the open end is provided with an opening communicated with the hollow cavity;
at least a portion of one of the first electrode layer and the second electrode layer is disposed on an outer peripheral surface of the open end, and at least a portion of the other is disposed on an outer peripheral surface of the closed end.
In one embodiment, the first electrode layer is disposed on the outer circumferential surface of the open end, the second electrode layer includes a first section and a second section that are arranged along the axial direction of the heat generating member and are connected to each other, the first section is disposed on the outer circumferential surface of the closed end, and the second section extends toward the side of the open end.
In one embodiment, the heat generating component further comprises an insulating layer, and the insulating layer is arranged on one side, facing the heat generating part, of the second section.
In one embodiment, the heat generating member includes a middle portion connected between the open end and the closed end, the insulating layer is disposed outside the middle portion and a portion of the first electrode layer, and the second segment is disposed outside the insulating layer and extends above the first electrode layer.
In one embodiment, the heat generating member is configured as a rod-shaped structure, and the closed end is configured as a sharp structure.
In one embodiment, the heat generating component further includes a first electrode and a second electrode, and the first electrode and the second electrode are both disposed at the open end and are connected to the first electrode layer and the second electrode layer, respectively.
In one embodiment, the heat generating component further comprises a mounting member, and the mounting member is sleeved on the periphery of the opening end.
In one embodiment, the heat generating member includes a ceramic material and a metal material, and in the heat generating member, the volume ratio of the metal material is 30% -65%, and the volume ratio of the ceramic material is 35% -75%.
In one embodiment, the metallic material comprises at least one of nickel, iron, cobalt, copper, titanium, aluminum, and stainless steel; and/or
The ceramic material includes at least one of alumina, zirconia, silica, yttria, lanthana, ceria, magnesia, manganese oxide, and titania.
In one embodiment, the resistivity of the heat generating member is in a range of 4 × 10 -6 Ω·m-8×10 -4 Ω·m。
In one embodiment, the temperature coefficient of resistance of the heat generating member is greater than 600 ppm/DEG C.
An electronic atomization device comprises the heating component.
Drawings
Fig. 1 is a schematic structural diagram of a heating element according to an embodiment of the present application.
Description of reference numerals: 100. a heat generating component; 10. a heat generating member; 12. an open end; 14. an intermediate portion; 16. a closed end; 20. a hollow cavity; 30. a first electrode layer; 50. a second electrode layer; 52. a first stage; 54. a second stage; 70. an insulating layer; 82. a first electrode; 84. a second electrode.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediary. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Referring to fig. 1, in an embodiment of the present application, a heat generating assembly 100 is provided, which includes a heat generating component 10, a first electrode layer 30 and a second electrode layer 50, wherein the first electrode layer 30 is at least partially disposed on an outer circumferential surface of one axial end of the heat generating component 10, and the second electrode layer 50 is at least partially disposed on an outer circumferential surface of the other axial end of the heat generating component 10; the heating element 10 is a conductive element, and the heating element 10 can electrically connect the first electrode layer 30 and the second electrode layer 50, so as to form a current flowing from one of the first electrode layer 30 and the second electrode layer 50 to the other in the axial direction of the heating element 10.
In this way, the heat generating member 10 itself, acting as a conductive member, is able to heat up after being energized, to heat up the aerosol-generating substrate that is sheathed on the heat generating member 10. In addition, the first electrode layer 30 and the second electrode layer 50 are respectively arranged at two opposite ends of the heating element 10 in the axial direction to serve as electric connection parts for connecting the positive electrode and the negative electrode, so that after the first electrode layer 30 and the second electrode layer 50 are connected into a circuit and electrified, a current flowing from one of the first electrode layer 30 and the second electrode layer 50 to the other along the axial direction of the heating element 10 can be formed on the heating element 10, a linear current path is formed by respectively arranging the first electrode layer 30 and the second electrode layer 50 at two ends of the heating element 10 in the axial direction, a groove penetrating through the thickness direction is not required to be formed as in the conventional heating element 10 to form a U-shaped current path, and the heating element 10 is good in mechanical strength and not easy to break.
In some embodiments, the hollow cavity 20 is formed in the heating element 10 along the axial direction thereof, so that the heating element 10 is disposed in a hollow manner, the cross-sectional area of the heating element 10 is reduced, and the energy consumption of the heating element 10 during operation is further reduced. And adopt hollow structure can show to reduce the position hot melt that generates heat to can show and promote rate of heating up, reduce latency, thereby can improve consumer experience and feel.
Further, the heat generating member 10 includes an open end 12 and a closed end 16 disposed opposite to each other in an axial direction thereof, and the open end 12 has an opening communicating with the hollow cavity 20. When the hollow cavity 20 is opened inside the heat generating component 10, the hollow cavity 20 is opened from the side of the open end 12, an opening communicated with the hollow cavity 20 is formed at the open end 12, and the end of the heat generating component 10 opposite to the open end 12 along the axial direction is a closed end 16, i.e. the hollow cavity 20 is not opened along the axial direction of the heat generating component 10, the closed end 16 has no opening, and the aerosol generating substrate can be inserted into the heat generating component 10 through the closed end 16. One of the first electrode layer 30 and the second electrode layer 50 is at least partially disposed on the outer circumferential surface of the open end 12, and at least partially disposed on the outer circumferential surface of the closed end 16, so that the first electrode layer 30 and the second electrode layer 50 are respectively disposed at two ends of the heat generating member 10 in the axial direction to form a current flowing in the axial direction on the heat generating member 10.
In addition, the opening depth of the hollow cavity 20 can affect the temperature field distribution of the heat generating member 10, for example, the shallower the opening depth of the hollow cavity 20, the closer the temperature field distribution is to the open end 12, and the deeper the opening depth of the hollow cavity 20, the closer the temperature field distribution is to the closed end 16.
Further, the first electrode layer 30 is disposed on the outer circumferential surface of the open end 12, the second electrode layer 50 includes a first section 52 and a second section 54 which are arranged along the axial direction of the heat generating element 10 and connected to each other, the first section 52 is disposed on the outer circumferential surface of the closed end 16, the second section 54 extends toward the side where the open end 12 is located, so that the first electrode layer 30 is disposed on the open end 12, the second electrode layer 50 is disposed on the closed end 16 and electrically connected to the closed end 16, and the second electrode layer 50 extends toward the side where the open end 12 is located, so that both the positive and negative electrodes are connected to the first electrode layer 30 and the second electrode layer 50 at the side where the open end 12 is located, which is convenient for installation and circuit connection.
Optionally, the first electrode layer 30 and the second electrode layer 50 are both annular layer bodies disposed around the entire periphery of the heat generating member 10, so that the heat generating member 10 can be uniformly electrified and heated in the circumferential direction.
In some embodiments, the heat generating component 100 further includes an insulating layer 70, and the insulating layer 70 is disposed on a side of the second section 54 facing the heat generating member 10. The second electrode layer 50 comprises a first segment 52 and a second segment 54, the first segment 52 and the closed end 16 are covered and electrically connected with the second electrode layer 50, the second segment 54 extends from the side of the open end 12, the second electrode layer 50 is guided to the side of the open end 12, electrodes of the first electrode layer 30 and the second electrode layer 50 are conveniently arranged from the side of the open end 12, and the first electrode layer 30 and the second electrode layer 50 are conveniently connected into a circuit. In addition, the insulating layer 70 is disposed on one side of the second segment 54 facing the heat generating component 10, so as to prevent the second segment 54 from being conducted with the heat generating component 10 or the first electrode layer 30 at the bottom in the process of extending to the opening end 12, and ensure that the current flowing along the axial direction of the heat generating component 10 is formed in the heat generating component 10.
Further, the heat generating member 10 includes a middle portion 14 connected between the open end 12 and the closed end 16, the insulating layer 70 is disposed outside the middle portion 14 and a portion of the first electrode layer 30, the second segment 54 is disposed outside the insulating layer 70 and extends above the first electrode layer 30, so that the insulating layer 70 is disposed on a side of the second segment 54 facing the heat generating member 10 to prevent the second segment 54 from short-circuiting with the middle portion 14 and the first electrode layer 30, and the second segment 54 extends above the first electrode layer 30 to facilitate subsequent electrode connection. Optionally, the insulating layer 70 is disposed beyond the second section 54 in a direction toward the open end 12 to ensure an insulating effect of the insulating layer 70 on the second section 54.
In some embodiments, the heat generating member 10 is configured as a rod-like structure and the closed end 16 is configured as a pointed structure to facilitate insertion of the aerosol-generating substrate through the closed end 16 onto the heating member. Specifically, the first segment 52 of the second electrode layer 50 covers the sharp closed end 16.
In some embodiments, the heat generating component 100 further comprises a first electrode 82 and a second electrode 84, wherein the first electrode 82 and the second electrode 84 are both disposed at the open end 12 and are respectively connected to the first electrode layer 30 and the second electrode layer 50, so that the first electrode 82 and the second electrode 84 are respectively used to connect the first electrode layer 30 and the second electrode layer 50 into an electric circuit to supply power to the heat generating element 10. Optionally, the first electrode layer 30 and the second electrode layer 50 are both conductive layers to be electrically connected to the first electrode 82 and the second electrode 84, respectively.
In some embodiments, the heat generating component 100 further includes a mounting member, which is sleeved on the outer periphery of the opening end 12, so as to use the mounting member as a mounting base of the heat generating component 100 to mount the heat generating component 100 in the electronic atomization device.
In some embodiments, the heat generating member 10 includes a ceramic material and a metal material, wherein the volume ratio of the metal material in the heat generating member 10 is 30% to 65%, the volume ratio of the ceramic material is 35% to 75%, the metal material has an electrical conductivity, has a lower electrical resistivity and a higher Temperature Coefficient of Resistance (TCR), and the ceramic material has a resistance adjusting effect and a strength enhancing effect. Moreover, the metal phase and the ceramic phase have the characteristics of good high-temperature chemical compatibility and high sintering activity, and the densification and sintering of the metal ceramic can be realized at normal pressure and relatively low sintering temperature. In the whole sintering process, the metal phase and the ceramic phase do not generate chemical reaction and high-temperature chemical diffusion, so that the resistivity of the heating element 10 made of metal ceramic is strongly related to the volume ratio of the metal phase to the ceramic phase, and the resistivity of the heating element 10 can be adjusted by adjusting the volume ratio of the metal phase to the ceramic phase, thereby meeting different heating requirements.
In addition, the metal material has high toughness, so the metal ceramic heating element 10 has both metal toughness and ceramic high strength in terms of mechanical properties, so that the heating element 10 has very high mechanical strength and very high fracture resistance.
Further, the metal material includes at least one of nickel, iron, cobalt, copper, titanium, aluminum and stainless steel, and/or the ceramic material includes at least one of alumina, zirconia, silica, yttria, lanthana, ceria, magnesia, manganese oxide and titania, and the heat generating member 10 has a wide source of raw materials and is inexpensive, so the material cost is low. In addition, the sintering activity is high and the processing performance is good, so the process for preparing the metal ceramic heating element 10 is simple and the manufacturing cost is low.
Alternatively, the ceramic material may be doped with appropriate element species and doping amount for the purpose of properly improving the structural stability and mechanical properties of the ceramic phase. For example, doping zirconia with yttrium can improve the phase structure stability of zirconia, and doping alumina with zirconium can improve the toughness of alumina. It is understood that the kind and doping amount of the doping element are set according to the requirement, and are not limited herein.
In some embodiments, the heat generating member 10 has a resistivity in the range of 4 × 10 -6 Ω·m-8×10 -4 Omega.m, fills the application range of the conventional heating resistor at present, can meet the requirement of the electronic atomization device on the resistivity of the heating component 100, and can realize the functions of heating and automatic temperature control.
Further, the resistance temperature coefficient of the heating element 10 is greater than 600 ppm/DEG C, that is, the resistance temperature coefficient of the heating element 10 is larger, so that accurate temperature control can be performed, and the atomization effect is improved.
For the heating element 100 in any of the above embodiments, the specific manufacturing method includes the following steps: (1) mixing materials: uniformly mixing a metal material, a ceramic material and a mixing agent according to a required proportion; (2) molding: preparing a biscuit by adopting an injection molding method, or preparing the biscuit by adopting an extrusion or dry pressing method; and (3) sintering: placing the formed biscuit in an atmosphere furnace or a vacuum furnace for glue discharging and sintering; (4) finishing of the sintered body: simply machining and finishing the sintered metal ceramic heating element 10 into a quasi-hollow cylinder (one end of which is not communicated and is used for processing a needle point) with the outer diameter meeting the requirement; (5) According to the arrangement mode of the positive electrode and the negative electrode, preparing an insulating coating and an electrode layer on the outer surface of the quasi-hollow cylinder, and further pointing the quasi-hollow cylinder for sharpening, specifically, coating a first electrode layer 30 on the outer surface of the open end 12 of the quasi-hollow cylinder, coating an insulating layer 70 on the middle part 14 and the closed end 16 of the quasi-hollow cylinder, then pointing the closed end 16 of the space cylinder for sharpening, removing the insulating layer 70 on the closed end 16, and finally coating a second electrode layer 50 on the pointed closed end 16 and the insulating layer 70 to finish coating the insulating layer 70 and the electrode layer; (6) preparing positive and negative electrodes and a mounting piece: brazing and preparing an electrode and a mounting piece in an atmosphere furnace or a vacuum furnace; (7) preparing a glaze layer; sintering the surface of the heating needle in an atmosphere furnace or a vacuum furnace to prepare the protective glaze layer. According to the specific situation, the installation part can be completed after the glaze layer is prepared.
It can be understood that the heating element 100 manufactured by the above-described manufacturing method, wherein the heating element 10 has a resistivity of 4 x 10-6 Ω · m to 8 x 10-4 Ω · m and a temperature coefficient of resistance of more than 600 ppm/deg.c.
The above-mentioned preparation method is exemplified by the following specific examples in terms of the volume ratio of the metal material and the ceramic material, the selected material components of the metal material and the ceramic material, the particle sizes of the metal material and the ceramic material, and the degree of vacuum and temperature of sintering.
Example 1:
1) Proportioning 430L of stainless steel powder (metal material) with the grain diameter of-10 mu m according to the volume percentage of 35 percent and zirconium oxide powder (ceramic material) with the grain diameter of-1 mu m according to the volume percentage of 65 percent, then adding a proper amount of Triethanolamine (TEA) serving as a dispersant, and wet-grinding the mixture in a ball mill for 40 hours to obtain mixed powder;
2) Putting the mixture into a vacuum drying oven at 60 ℃ for drying;
3) Adding 3.0 mass percent of PVB solution serving as a forming binder into the dried mixture, and fully stirring and mixing;
4) Pouring the mixture into a mortar for grinding uniformly to form granulated powder;
5) Pouring the granulation powder into a dry pressing mould, and pressing the powder into a target shape under the molding pressure of 200 MPa;
6) Drying the molded green body in a vacuum drying oven at 60 ℃ for 4 hours;
7) Sintering the dried green body in a vacuum furnace at the vacuum degree of 10-3Pa and the sintering temperature of 1350 ℃ for 120min;
8) The sintered body is simply machined by centerless grinding to obtain a quasi-hollow cylinder (one end is not connected and is used for machining the sharp closed end 16) so that the outer diameter dimension of the quasi-hollow cylinder meets the requirement.
9) Preparing a first electrode layer 30 on the outer surface of the quasi-hollow cylinder with the open end by using a dip coating-vacuum sintering method, and preparing an insulating coating on the first electrode layer 30;
10 Sharpening the end of the cylinder far away from the opening, and further preparing a second electrode layer 50 on the outer surface of the heat generating member 10, wherein one end of the second electrode layer 50 is communicated with the heat generating member 10 through the closed end 16, and the other end extends towards the side of the opening and is positioned on the insulating layer 70, but not beyond the insulating layer 70;
11 The first electrode 82 and the second electrode 84 are respectively connected to the first electrode layer 30 and the second electrode layer 50;
12 Preparation of a glaze layer; and sintering the surface of the heating element 10 in an atmosphere furnace or a vacuum furnace to prepare the protective glaze layer. According to the specific situation, the mounting piece can be mounted and fixed after the glaze layer is prepared.
The resistance value of the heating element 10 prepared by the process is 0.8 omega, and the Temperature Coefficient of Resistance (TCR) of the heating element 10 is 1320 ppm/DEG C.
Example 2
1) Mixing 35% by volume of 316L stainless steel powder (metal material) with the particle size of-10 mu m and 65% by volume of zirconia powder (ceramic material) with the particle size of-1 mu m, adding a proper amount of Triethanolamine (TEA) serving as a dispersant, and wet-milling in a ball mill for 40 hours to obtain mixed powder;
2) Putting the mixture into a vacuum drying oven at 60 ℃ for drying;
3) Adding 3.0 mass percent of paraffin wax forming binder into the dried mixture, and fully stirring and mixing;
4) Pressing the mixture into a target shape by using an injection molding machine under the molding pressure of 10MPa, and then demolding;
5) And (3) soaking the demoulded green body in paraffin extraction liquid for 2 hours to remove most of paraffin.
6) And sintering the extracted green body in a vacuum furnace at the vacuum degree of 10-3Pa and the sintering temperature of 1350 ℃ for 120min.
7) And (3) simply machining the sintered body by a centerless grinder to obtain a semi-hollow cylinder, so that the outer diameter of the semi-hollow cylinder meets the requirement.
8) The sintered body is simply machined by centerless grinding to obtain a quasi-hollow cylinder (one end is not connected and is used for machining the sharp closed end 16) so that the outer diameter dimension of the quasi-hollow cylinder meets the requirement.
9) Preparing a first electrode layer 30 on the outer surface of the quasi-hollow cylinder with the open end by using a dip coating-vacuum sintering method, and preparing an insulating coating on the first electrode layer 30;
10 Sharpening the end of the cylinder far away from the opening, and further preparing a second electrode layer 50 on the outer surface of the heat generating member 10, wherein one end of the second electrode layer 50 is communicated with the heat generating member 10 through the closed end 16, and the other end extends towards the side of the opening and is positioned on the insulating layer 70, but not beyond the insulating layer 70;
11 The first electrode 82 and the second electrode 84 are respectively connected to the first electrode layer 30 and the second electrode layer 50;
12 Preparation of a glaze layer; and sintering the surface of the heating element 10 in an atmosphere furnace or a vacuum furnace to prepare the protective glaze layer. According to the specific situation, the base can be fixed after the glaze layer is prepared, and the installation sequence of the installation parts is not limited herein.
The resistance value of the heating element 10 prepared by the process is 0.82 omega, and the Temperature Coefficient of Resistance (TCR) of the heating element 10 is 1300 ppm/DEG C.
Through the above examples 1-2, it can be found that:
(1) The densification sintering of the heating element 10 can be realized under relatively low vacuum degree and sintering temperature. In the whole sintering process, the metal phase and the ceramic phase do not have chemical reaction and high-temperature chemical diffusion, so that the metal phase and the ceramic phase have the characteristics of good high-temperature chemical compatibility and high sintering activity.
(2) The raw material of the heating element 100 has a wide source and a low price, so the material cost of the heating element 100 is low. And because the metal phase and the ceramic phase have high sintering activity and good processing performance, the process for preparing the heating component 100 is simple, and the manufacturing cost is low.
(3) By the preparation method, the obtained heating component 100 can meet the requirements that the resistivity of the heating element 10 is 4 multiplied by 10 < -6 > omega.m to 8 multiplied by 10 < -4 > omega.m and the Temperature Coefficient of Resistance (TCR) is more than 600 ppm/DEG C, and the functions of heating and accurate temperature control of the heating component 100 can be realized.
(4) Because the mass percentage of the metal in the heating element 10 is high and the metal has high toughness, the heating element 10 has both the toughness of the metal and the high strength of the ceramic in terms of mechanical properties, so that the heating element 10 can have high bending strength.
(5) The heating member 10 has a high metal mass ratio and stable resistivity of the metal, and is not affected by the stoichiometric ratio and the sintering atmosphere, so that the heating member 10 has high reproducibility and high resistivity stability in preparation.
(6) The heating part 10 does not need to be grooved, the mechanical strength of the heating part 10 is guaranteed, the heating part 10 is prevented from being broken, meanwhile, the heating part 10 which does not need to be grooved is convenient to machine and form, and the machining difficulty and the manufacturing cost are reduced.
In summary, the resistivity of the heat generating element 10 can be set to 4 × 10 by the above method for manufacturing the heat generating component 100 -6 Ω·m～8×10 -4 Omega.m, the resistance temperature coefficient of the heating element 10 is more than 600 ppm/DEG C, the application range of the conventional heating resistor is filled, the requirements of some specific heating non-combustion aerosol forming devices on the resistivity of the heating component 100 can be met, and the heating and accurate temperature control functions can be realized.
In an embodiment of the present application, an electronic atomization device is further provided, which includes the heat generating component 100 described in any of the above embodiments, where the heat generating component 100 includes the heat generating element 10, a first electrode layer 30, and a second electrode layer 50, the first electrode layer 30 is at least partially disposed on an outer circumferential surface of one axial end of the heat generating element 10, and the second electrode layer 50 is at least partially disposed on an outer circumferential surface of the other axial end of the heat generating element 10; wherein, the heating element 10 is a conductive element, and a current flowing from one of the first electrode layer 30 and the second electrode layer 50 to the other is formed in the heating element 10 along the self-axial direction.
In this way, the heat generating member 10 itself, acting as a conductive member, is able to heat up after being energized, to heat up the aerosol-generating substrate that is sheathed on the heat generating member 10. In addition, the first electrode layer 30 and the second electrode layer 50 are respectively arranged at two opposite ends of the heating element 10 in the axial direction to serve as electric connection parts for connecting the positive electrode and the negative electrode, so that after the first electrode layer 30 and the second electrode layer 50 are connected into a circuit and electrified, a current flowing from one of the first electrode layer 30 and the second electrode layer 50 to the other along the axial direction of the heating element 10 can be formed on the heating element 10, a linear current path is formed by respectively arranging the first electrode layer 30 and the second electrode layer 50 at two ends of the heating element 10 in the axial direction, a groove penetrating through the thickness direction is not required to be formed as in the conventional heating element 10 to form a U-shaped current path, and the heating element 10 is good in mechanical strength and not easy to break.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several implementation modes of the present application, and the description thereof is specific and detailed, but not construed as limiting the scope of the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (14)
1. The heating assembly is characterized by comprising a heating element, a first electrode layer and a second electrode layer, wherein the first electrode layer is at least partially arranged on the outer peripheral surface of one axial end of the heating element, and the second electrode layer is at least partially arranged on the outer peripheral surface of the other axial end of the heating element;
the heating element is an electric conductor, and the heating element can electrically conduct the first electrode layer and the second electrode layer.
2. The heating assembly as claimed in claim 1, wherein the heating member has a hollow cavity formed therein along an axial direction thereof.
3. The heating assembly as claimed in claim 2, wherein the heating element includes an open end and a closed end disposed opposite to each other along the axial direction of the heating element, the open end having an opening communicating with the hollow cavity;
at least a portion of one of the first electrode layer and the second electrode layer is disposed on an outer peripheral surface of the open end, and at least a portion of the other is disposed on an outer peripheral surface of the closed end.
4. The heat generating assembly of claim 3, wherein the first electrode layer is disposed on the outer circumferential surface of the open end, the second electrode layer includes a first section and a second section that are arranged along the axial direction of the heat generating member and are connected to each other, the first section is disposed on the outer circumferential surface of the closed end, and the second section extends toward the side of the open end.
5. The heat generating assembly as claimed in claim 4, further comprising an insulating layer disposed on a side of the second section facing the heat generating member.
6. The heat generating assembly of claim 5, wherein the heat generating member includes a middle portion connected between the open end and the closed end, the insulating layer is disposed outside the middle portion and a portion of the first electrode layer, and the second segment is disposed outside the insulating layer and extends above the first electrode layer.
7. The heat generating component of claim 3, wherein the heat generating member is configured as a rod-like structure and the closed end is configured as a pointed structure.
8. The heating assembly of claim 3, further comprising a first electrode and a second electrode, both disposed at the open end and connected to the first electrode layer and the second electrode layer, respectively.
9. The heating element as claimed in claim 3, further comprising a mounting member, wherein the mounting member is sleeved on the outer periphery of the opening end.
10. The heating assembly according to any one of claims 1 to 9, wherein the heating member includes a ceramic material and a metal material, and in the heating member, the volume ratio of the metal material is 30% to 65%, and the volume ratio of the ceramic material is 35% to 75%.
11. The heat-generating component of claim 10, wherein the metallic material comprises at least one of nickel, iron, cobalt, copper, titanium, aluminum, and stainless steel; and/or
The ceramic material includes at least one of alumina, zirconia, silica, yttria, lanthana, ceria, magnesia, manganese oxide, and titania.
12. The heat generating component of claim 10, wherein the heat generating member has a resistivity in the range of 4 x 10 -6 Ω·m-8×10 -4 Ω·m。
13. The heat generating component of claim 10, wherein the temperature coefficient of resistance of the heat generating member is greater than 600ppm/° c.
14. An electronic atomizer device, comprising a heat-generating component according to any one of claims 1 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211395293.9A CN115736365A (en) | 2022-11-09 | 2022-11-09 | Heating element and electronic atomization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211395293.9A CN115736365A (en) | 2022-11-09 | 2022-11-09 | Heating element and electronic atomization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115736365A true CN115736365A (en) | 2023-03-07 |
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ID=85368385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211395293.9A Pending CN115736365A (en) | 2022-11-09 | 2022-11-09 | Heating element and electronic atomization device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115736365A (en) |
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2022
- 2022-11-09 CN CN202211395293.9A patent/CN115736365A/en active Pending
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