Heating components, atomizers and electronic atomization devices

Abstract

The present invention relates to a heating component, an atomizer and an electronic atomization device. The heating component includes a preheating part and an atomization part located on the preheating part, the preheating part is a porous ceramic, and the preheating part is a positive temperature coefficient thermistor material, and the circuit where the preheating part is located is connected in parallel with the circuit where the atomization part is located. The preheating part of the heating component can simultaneously realize the functions of guiding liquid and preheating the liquid to be atomized, so that the fluidity of the liquid to be atomized in the preheating part is improved and there is enough liquid to be atomized for atomization, thereby avoiding the electronic cigarette having a small amount of smoke or no smoke at the beginning of each puff.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic cigarettes, and in particular to a heating component, an atomizer and an electronic atomization device. Background Art

[0002] Electronic cigarettes generally include a storage chamber for storing tobacco oil, an atomizer for atomizing tobacco oil, and a battery assembly for powering the atomizer. The atomizer has a heating element, and the tobacco oil in the storage chamber is atomized by infiltration or conduction to the heating element. The atomizer is the core device for generating atomized gas in electronic cigarettes, and its atomization effect determines the quality and taste of the smoke.

[0003] At present, electronic cigarettes require a high concentration of e-liquid. However, the viscosity of high-concentration e-liquid is also high, and its permeability or fluidity is poor. It is not easy to penetrate or conduct from the oil storage chamber to the heating element, and it is easy to have insufficient oil supply and less atomized e-liquid. In addition, the current e-liquid is easily affected by low temperature. Under low temperature conditions, the e-liquid is even less likely to penetrate or conduct to the heating element. Therefore, the current electronic cigarettes often produce less smoke or no smoke at the first puff, and the user experience is poor. Summary of the invention

[0004] Based on this, in order to solve the problem that little or no smoke is produced at the beginning of smoking, it is necessary to provide a heating component that can preheat the e-liquid.

[0005] In addition, an atomizer and an electronic atomization device including the heating component capable of preheating the e-liquid are also provided.

[0006] A heating component comprises a preheating part and an atomizing part located on the preheating part, wherein the preheating part is porous ceramic and a positive temperature coefficient thermistor material, and a circuit where the preheating part is located is connected in parallel with a circuit where the atomizing part is located.

[0007] The preheating part of the above-mentioned heating component is porous ceramic, and the preheating part is a positive temperature coefficient thermistor. The structure of the porous ceramic enables the preheating part to have the function of oil conduction, and the positive temperature coefficient thermistor makes the preheating part a thermistor. Therefore, the above-mentioned heating component in which the circuit where the preheating part is located and the circuit where the atomization part is located are arranged in parallel can achieve: at the beginning of power-on, the preheating part generates heat, and the preheating part quickly preheats the smoke oil to improve its fluidity in the preheating part so that enough smoke oil reaches the atomization part, thereby solving the problem of small smoke volume due to insufficient atomized smoke oil at the beginning of each puff.

[0008] In addition, as the temperature of the preheating part gradually increases, the resistance of the preheating part rises sharply until almost no current flows through it, and the circuit where the preheating part is located is equivalent to being broken. At this time, the current mainly flows through the atomization part, causing the atomization part to atomize the e-liquid. The preheating part does not have to have current flowing through it all the time, and the preheating part can further preheat the e-liquid through the residual heat. When the temperature of the preheating part is low, it can automatically restart the circuit where the preheating part is located to make the preheating part heat up. This working mode can make the above-mentioned heating component consume less energy.

[0009] In one of the embodiments, under normal temperature conditions, the ratio of the resistance of the atomization part to the resistance of the preheating part is 1:0.1-2.

[0010] In one embodiment, the Curie temperature of the preheating portion does not exceed 200°C; and / or the resistivity of the preheating portion at room temperature is 0.25Ω / cm to 28Ω / cm; and / or the lift-to-drag ratio of the preheating portion is 1×10 2 ~1×10 5 .

[0011] In one embodiment, the Curie temperature of the preheating portion is 100°C to 200°C; and / or the resistivity of the preheating portion at room temperature is 1Ω / cm to 20Ω / cm; and / or the lift-to-drag ratio of the preheating portion is 1×10 3 ~1×10 5 .

[0012] In one of the embodiments, the preheating part is selected from one of a BaTiO3-based PTC ceramic with a porous structure, a SrTiO3-based PTC ceramic with a porous structure, a PbTiO3-based PTC ceramic with a porous structure, and a V2O3-based PTC ceramic with a porous structure.

[0013] In one embodiment, the preheating part is doped with at least one of La, Y, Nb and Sb.

[0014] In one embodiment, the preheating portion has a liquid inlet surface and a liquid outlet surface opposite to the liquid inlet surface, and the atomization portion is located on the liquid outlet surface.

[0015] In one embodiment, the material of the atomization part is selected from at least one of a single metal, an alloy, NTC ceramics, carbon fiber and graphite.

[0016] In one embodiment, the material of the atomization part is NTC ceramic;

[0017] The resistivity of the atomization part at room temperature is 1×10 1 Ω / cm~1×10 6Ω / cm; and / or, the resistivity of the atomization portion at 60°C to 300°C is 1×10 -1 Ω / cm~1×10 2 Ω / cm.

[0018] In one embodiment, the atomization portion is doped with at least one of La, Nd and Ce.

[0019] In one of the embodiments, it further includes a liquid guiding portion, which is located on a side of the preheating portion away from the atomization portion, and the liquid guiding portion is porous ceramic.

[0020] An atomizer, comprising:

[0021] A liquid storage container, wherein the liquid storage container has a liquid storage cavity for storing the liquid to be atomized, and the liquid storage cavity is provided with a liquid outlet;

[0022] The heating component is used to atomize the liquid to be atomized. The heating component is the heating component mentioned above, and the preheating part is close to the liquid outlet.

[0023] In one embodiment, the preheating part is located between the atomizing part and the liquid outlet, and the atomizing part is used to atomize the liquid to be atomized that is conducted through the preheating part.

[0024] An electronic atomization device, comprising:

[0025] Atomizer, the atomizer comprising:

[0026] A liquid storage container, wherein the liquid storage container has a liquid storage cavity for storing the liquid to be atomized, and the liquid storage cavity is provided with a liquid outlet;

[0027] A heating component, used for atomizing the liquid to be atomized, the heating component is the above-mentioned heating component, and the preheating part is close to the liquid outlet;

[0028] A power source is used to supply power to the atomizer. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a cross-sectional view of an electronic atomization device according to one embodiment;

[0030] Figure 2 for Figure 1 A partial view of a heating component of the electronic atomization device shown;

[0031] Figure 3 A circuit diagram of an initial and later stage of power-on of a heating component in one embodiment;

[0032] Figure 4 A circuit diagram of the initial and later stages of power-on of a heating component according to another embodiment;

[0033] Figure 5 is a cross-sectional view of an electronic atomization device according to another embodiment;

[0034] Figure 6 for Figure 5 A partial view of a heating component of an electronic atomization device of the illustrated embodiment. DETAILED DESCRIPTION

[0035] In order to facilitate understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Some embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a centered element at the same time. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0037] See also Figure 1 In one embodiment of the present invention, an electronic atomization device 10 is provided. The electronic atomization device 10 includes a housing 101 and an atomizer 100. The atomizer 100 is accommodated in the housing 101 and is used to atomize the liquid. Of course, the shape of the housing is not particularly limited and can be designed according to actual conditions, such as a columnar, strip or block shape. Of course, it is understandable that in some embodiments, the housing 101 can be omitted.

[0038] In one embodiment, the electronic atomization device 10 is an electronic cigarette, and the atomizer 100 is used to atomize the e-liquid. Of course, in other embodiments, the electronic atomization device 10 is not limited to the electronic cigarette, but can also be other devices including the atomizer 100, and the electronic atomization device 10 can atomize liquids with higher viscosity.

[0039] Specifically, the atomizer 100 includes a liquid storage container 110, a heating component 130, a sealing member 140, connecting lines and a power source.

[0040] Specifically, the liquid storage container 110 has a liquid storage chamber 120 for storing liquid to be atomized (such as e-liquid). Of course, the liquid storage chamber 120 has a liquid outlet 121, and the liquid outlet 121 is used for the inflow and / or outflow of the liquid to be atomized.

[0041] Specifically, the heating component 130 is close to the liquid outlet 121, and the heating component 130 is used to absorb the liquid to be atomized from the liquid storage chamber 120, and preheat and atomize the liquid to be atomized. Figure 2 The heating component 130 includes a preheating portion 131 and an atomizing portion 133 located on the preheating portion 131. The preheating portion 131 is porous ceramic and is a positive temperature coefficient thermistor material (PTC). Specifically, the preheating portion 131 has a liquid inlet surface 131a and a liquid outlet surface 131b opposite to the liquid inlet surface 131a. The liquid inlet surface 131a is close to the liquid outlet 121.

[0042] The preheating portion 131 is used to absorb the liquid to be atomized in the liquid storage chamber 120 and preheat the liquid to be atomized absorbed from the liquid storage chamber 120, thereby improving the fluidity of the liquid to be atomized in the preheating portion 131, and further allowing the liquid to be atomized in the liquid storage chamber 120 to reach the atomization portion 133 more quickly and be atomized into smoke for the user to inhale. Specifically, since the preheating part 131 is a porous ceramic, the porous ceramic enables the preheating part 131 to absorb the liquid to be atomized in the liquid storage chamber 120 and play a role in guiding the flow; at the same time, the preheating part 131 is also a positive temperature coefficient thermistor, that is, the preheating part 131 is a thermistor, and its resistance will increase with the increase of temperature, which enables the preheating part 131 to use the electric energy mainly for preheating the liquid to be atomized at the beginning of power-on, and can use the electric energy mainly for atomizing the liquid to be atomized after the preheating is completed, thereby realizing the preheating of the liquid to be atomized and avoiding that only a small amount of the liquid to be atomized is atomized due to poor fluidity of the liquid to be atomized; at the same time, since the preheating circuit is not always in a working state (not a large amount of current is always passing through), when the electric energy is mainly used for atomizing the liquid to be atomized, the preheating part 131 preheats the liquid to be atomized by the residual heat, which also achieves energy saving.

[0043] In one embodiment, the Curie temperature of the preheating section 131 does not exceed 200°C. Furthermore, the Curie temperature of the preheating section 131 is 100°C to 200°C. The Curie temperature refers to the temperature at which the resistance value of the PTC begins to increase steeply. The Curie temperature of the preheating section 131 is set as described above so that the liquid to be atomized is preheated quickly; at the same time, the Curie temperature of the preheating section 131 is set as described above, which also controls the distribution of electric energy. By controlling the electric energy on the preheating section 131, it is avoided that too much electric energy on the preheating section 131 is converted into heat energy and waste caused, thereby improving the utilization rate of electric energy.

[0044] In one embodiment, the lift-to-drag ratio of the preheating unit 131 is greater than 1×10 2Furthermore, the lift-to-drag ratio of the preheating unit 131 is 1×10 2 ~1×10 5 Furthermore, the lift-to-drag ratio of the preheating unit 131 is 10 3 -~10 5 The rise-to-resistance ratio of the preheating section 131 is set as described above, so that the resistance value of the preheating section 131 can be quickly increased after reaching a temperature range suitable for preheating, so that the resistance of the preheating section 131 increases rapidly, so that the circuit where the preheating section 131 is located is turned into an open circuit more quickly, and then the current mainly flows to the circuit where the atomization section 133 is located, thereby realizing a rapid transition between the electric energy being mainly used for preheating and being mainly used for atomization.

[0045] In one embodiment, the resistivity of the preheating part 131 at room temperature is 0.25Ω / cm to 28Ω / cm. Further, the resistivity of the preheating part 131 at room temperature is 1Ω / cm to 20Ω / cm. The resistivity of the preheating part 131 is set as above so that the preheating part 131 can generate heat quickly and heat the liquid to be atomized in the pores of the preheating part 131.

[0046] In one embodiment, the preheating part 131 is selected from one of a BaTiO3-based PTC ceramic with a porous structure, a SrTiO3-based PTC ceramic with a porous structure, a PbTiO3-based PTC ceramic with a porous structure, and a V2O3-based PTC ceramic with a porous structure.

[0047] PTC ceramics are semiconductor ceramics made of barium titanate (or strontium titanate, lead titanate) as the main component, with a small amount of rare earth (Y, Nb, Bi, Sb), acceptor (Mn, Fe) elements, and glass (silicon oxide, aluminum oxide) and other additives added, and sintered. Ceramic PTC has a small resistance below the Curie temperature, and the resistance increases by 1000 to 1 million times above the Curie temperature. The commonly used doping method is to dope La, Y, Nb and Sb plasma as donors, and 3d group metal elements such as Mn, Cu, and Fe as acceptors. By doping, the resistivity of PTC ceramics at room temperature is reduced and the lift-to-resistance ratio is improved.

[0048] In this embodiment, the BaTiO3-based PTC ceramic with a porous structure is a porous ceramic made of barium titanate as the base and doped with other polycrystalline ceramic materials. The PTC effect of BaTiO3 is related to its ferroelectricity, and its resistivity mutation corresponds to the Curie temperature. However, BaTiO3 single crystals without grain boundaries do not have the PTC effect. Only BaTiO3 ceramics with fully semiconducting grains and appropriate insulation of grain boundaries have the PTC effect. When preparing BaTiO3-based PTC ceramics, donor doping is used to make the grains fully semiconducting, and oxygen atmosphere sintering is used to oxidize the grain boundaries and their vicinity to have appropriate insulation. Slow cooling also makes the grain boundaries fully oxidized, and the PTC effect is enhanced.

[0049] Specifically, at least one of La, Y, Nb and Sb is doped in the preheating part 131. By doping with rare earth elements, the impedance of the BaTiO3-based PTC ceramic is lower at room temperature, and the lift-to-drag ratio is also improved.

[0050] Furthermore, La is doped in the preheating part 131, and the doping amount of La is 0.1% to 1%. Doping La can make the resistivity of the preheating part 131 reach 28Ω / cm, and the lift-to-resistance ratio reach 1×10 3.7 Of course, in other embodiments, the preheating part 131 is not limited to the above-mentioned BaTiO3-based PTC ceramics with a porous structure, and can be other PTC ceramics with a porous structure.

[0051] Of course, the preheating part 131 is provided with an end electrode, and the end electrode of the preheating part 131 is electrically connected to the power supply. It is understood that the shape of the preheating part 131 is not particularly limited, for example, it can be strip-shaped, cylindrical, stepped, etc.

[0052] Specifically, the atomizing portion 133 is located between the preheating portion 131 and the liquid outlet 121, and is used to atomize the liquid to be atomized conducted by the preheating portion 131. More specifically, the atomizing portion 133 is located on the liquid outlet surface 131b, and the atomizing portion 133 is used to atomize the liquid to be atomized. In a static state, the circuit where the preheating portion 131 is located and the circuit where the atomizing portion 133 is located constitute a parallel circuit. In the illustrated embodiment, the atomizing portion 133 is arranged on the liquid outlet surface 131b in a contacting manner.

[0053] In one embodiment, at normal temperature, the ratio of the resistance of the atomizing portion 133 to the resistance of the preheating portion 131 is 1:0.1 to 2. At normal temperature, the ratio of the resistance of the atomizing portion 133 to the resistance of the preheating portion 131 is 1:0.1 to 1. Further, at normal temperature, the ratio of the resistance of the atomizing portion 133 to the resistance of the preheating portion 131 is 1:0.1 to 0.5. According to the above arrangement, the electric energy can be mainly used for heating the preheating portion 131 to preheat the liquid to be atomized at the initial stage of power-on.

[0054] In one embodiment, the material of the atomizing portion 133 is selected from at least one of a single metal, an alloy, NTC ceramics, carbon fiber, and graphite. Specifically, the single metal may be a metal commonly used in the art for heating, such as nickel, aluminum, etc. The alloy may be an alloy commonly used in the art for heating, such as a nickel alloy, a silver alloy, an aluminum alloy, etc.

[0055] In one embodiment, the material of the atomization part 133 is NTC ceramic. The resistance value of NTC ceramics will gradually decrease with the increase of temperature. Most of NTC ceramics are spinel oxides, mainly manganese-containing binary and manganese-containing ternary oxides. For example, manganese-containing binary oxides include MnO-CuO-O2 oxides, MnO-CoO-O2 oxides, MnO-NiO-O2 oxides, etc.; manganese-containing ternary oxides include Mn-Co-Ni oxides, Mn-Cu-N oxides, Mn-Cu-Co oxides, etc. MnO-CoO-O2 oxide ceramics contain 23% to 60% manganese (mass fraction), the main crystal phases are cubic spinel MnCo2O4 and tetragonal spinel CoMn2O4, and the main conductive phase is MnCo2O4. After power is turned on, due to the large resistance of the atomization part 133, the start-up of the atomization function is relatively delayed, so the electric energy is mainly concentrated on the preheating part 131. As the preheating part 131 continues to generate heat, the atomized liquid is preheated, and part of the heat is also transferred to the atomizing part 133, thereby reducing the resistance value of the atomizing part 133, thereby starting the atomizing function of the atomizing part 133. Therefore, when the material of the atomizing part 133 is NTC ceramic, the heating component 130 can be preheated faster and the atomization can be faster.

[0056] Specifically, when the material of the atomizing portion 133 is NTC ceramic, the resistivity of the atomizing portion 133 at room temperature is 1×10 1 Ω / cm~1×10 6 Ω / cm. In one embodiment, the resistivity of the atomization portion 133 at 60°C to 300°C is 1×10 -1 Ω / cm~1×10 2 Ω / cm. Furthermore, the resistivity of the atomization portion 133 at room temperature is 1×10 1 Ω / cm~1×10 5 Ω / cm; and / or, the resistivity of the atomization portion 133 at 60°C to 300°C is 1×10 -1 Ω / cm~1×10 1.5 Ω / cm.

[0057] In one embodiment, the material of the atomization part 133 is a room temperature NTC thermistor ceramic. Further, the atomization part 133 is doped with at least one of La, Nd and Ce. Doping with at least one of La, Nd and Ce is used to reduce the thermal constant and the resistivity under room temperature conditions. In one embodiment, the atomization part 133 is doped with La. Further, the doping amount of La is 0.2%.

[0058] Of course, an end electrode is also provided on the atomizing part 133, and the end electrode of the atomizing part 133 is electrically connected to the power supply. The end electrode of the atomizing part 133 also forms an ohmic contact with the preheating part 131. The formation of ohmic contact between metal and semiconductor means that there is a pure resistance at the contact point, and the smaller the resistance, the better, so that when the component is operating, most of the voltage drop is in the active region (Active region) rather than on the contact surface. Therefore, its IV characteristic is a linear relationship, and the larger the slope, the smaller the contact resistance, and the size of the contact resistance directly affects the performance indicators of the device. Ohmic contact is widely used in metal processing, and the main measure to achieve it is to perform high doping on the surface layer of the semiconductor or introduce a large number of recombination centers.

[0059] It is understood that the shape of the atomization portion 133 is not particularly limited, and may be a common shape in the art, such as a sheet, a grid, a strip, etc.

[0060] Specifically, the seal 140 is located between the heating component 130 and the liquid storage container 110, and is used to seal the gap between the heating component 130 and the liquid storage container 110, so that the liquid to be atomized can reach the atomization part 133 and be atomized without flowing out from the side walls of the liquid guiding part and / or the preheating part 131.

[0061] The connection circuit is used to electrically connect the preheating part 131 and the atomizing part 133 to the power supply. The preheating part 131 and the atomizing part 133 are connected in parallel through the connection circuit and are connected to the power supply. It is understood that in some other embodiments, the connection circuit can also be omitted. When the connection circuit is omitted, the atomizer 100 is used by providing the connection circuit from the outside so that the power supply supplies power to the parallel preheating part 131 and the atomizing part 133.

[0062] The power supply is used to supply power to the atomizer 100. Furthermore, the power supply is used to supply power to the heating component 130. In the present embodiment, the power supply is contained in the housing 101. Of course, in other embodiments, the power supply may not be contained in the housing 101. In this case, the power supply may be contained in a housing alone, or the power supply may be contained in a space formed by the liquid storage container 110 extending in its extension direction. It is understandable that in some other embodiments, the power supply may be omitted. When the power supply is omitted, the atomizer 100 supplies power to the heating component 130 through an external power supply.

[0063] The above-mentioned electronic atomization device 10 has the following advantages:

[0064] (1) The preheating part 131 is a porous ceramic, and the preheating part 131 is a positive temperature coefficient thermistor material, so that the preheating part 131 has a liquid-conducting function and the characteristics of a thermistor. Figure 3 ( Figure 3 A is the circuit diagram at the initial stage of power-on. Figure 3 Figure B is a circuit diagram at the later stage of power-on, where R1 is the atomization part 133, and R2 is the preheating part 131). At the beginning of power-on, the resistance of the atomization part 133 is relatively small, and the current flows through the preheating part 131, causing the preheating part 131 to generate heat, thereby preheating the liquid to be atomized. As the temperature of the preheating part 131 gradually rises, the resistance gradually increases, and the fluidity of the liquid to be atomized improves, so that there is enough liquid to be atomized for the atomization part 133 to atomize. When the temperature reaches the Curie temperature, the resistance of the preheating part 131 will rise sharply, causing the circuit where the preheating part 131 is located to be in an open circuit state, and the electrical energy is mainly used for atomization. Therefore, the above-mentioned electronic atomization device 10 is not prone to the problem of insufficient supply and low smoke volume due to the high viscosity of the liquid to be atomized.

[0065] (2) The preheating section 131 does not have to have current flowing through it all the time. The preheating section 131 can further preheat the liquid to be atomized through the residual heat. When the temperature of the preheating section 131 is low, it can automatically restart the circuit where the preheating section 131 is located to make the preheating section 131 heat up. This working mode can make the electronic atomization device 10 consume less energy.

[0066] (3) When the atomizing part 133 is NTC ceramic, the resistance value of NTC ceramic decreases as the temperature increases. Figure 4 ( Figure 4 A is the circuit diagram at the initial stage of power-on. Figure 4 Figure B is a circuit diagram at the later stage of power-on, where R1 is the preheating unit 131 and R2 is the atomizing unit 133. At the initial stage of power-on, due to the large resistance of the atomizing unit 133, the start of its atomizing function is relatively delayed, so the electric energy is mainly concentrated on the preheating unit 131. As the preheating unit 131 continues to generate heat, the atomized liquid is preheated, and at the same time, part of the heat is also transferred to the atomizing unit 133, which reduces the resistance value of the atomizing unit 133, thereby starting the atomizing function of the atomizing unit 133. Therefore, when the material of the atomizing unit 133 is NTC ceramic, the heating component 130 can be preheated faster and the atomization can be faster.

[0067] See also Figure 5 and Figure 6, one embodiment of the present invention also provides another electronic atomization device 20, whose structure is roughly the same as the above-mentioned electronic atomization device 10, and the difference is that the heating component 230 of the electronic atomization device 20 also includes a liquid guide portion 235, and the liquid guide portion 235 is located on the side of the preheating portion 231 away from the atomization portion 233, and the liquid guide portion 235 is a porous ceramic. Specifically, the liquid guide portion 235 is located between the liquid outlet 221 and the preheating portion 231, so that the liquid to be atomized flows out of the liquid outlet 221 and reaches the preheating portion 231 through the liquid guide portion 235. More specifically, the liquid guide portion 235 is located on the liquid inlet surface 231a of the preheating portion 231, and the liquid guide portion 235 has a liquid suction surface 235a, and the liquid suction surface 235a is away from the liquid inlet surface 231a.

[0068] The electronic atomization device 20 has a similar structure to the electronic atomization device 10, and therefore has similar advantages to the electronic atomization device 10. In addition, the electronic atomization device 20 also uses the liquid guide portion 235 to centrally heat the liquid to be atomized in the pores of the preheating portion 231 with the heat generated by the preheating portion 231, thereby reducing the heat dissipation generated by the preheating portion 231 and improving the preheating efficiency of the preheating portion 231. On the other hand, since there are certain requirements for the thickness of the flow-guiding element in the atomizer, and both the liquid guide portion 235 and the preheating portion 231 have the flow-guiding function, the provision of the liquid guide portion 235 also saves costs.

[0069] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A heating component, characterized in that: It comprises a preheating part and an atomizing part located on the preheating part, wherein the preheating part is porous ceramic and a positive temperature coefficient thermistor material, and the circuit where the preheating part is located is connected in parallel with the circuit where the atomizing part is located; the preheating part has a liquid inlet surface and a liquid outlet surface opposite to the liquid inlet surface, and the atomizing part is located on the liquid outlet surface; The material of the atomization part is NTC ceramic; The ratio of the resistance of the atomizing part to the resistance of the preheating part is 1:0.1~1; the lift-to-drag ratio of the preheating part is 1×10 2 ~1×10 5 .

2. The heating component according to claim 1, characterized in that: The Curie temperature of the preheating part does not exceed 200° C.; and / or the resistivity of the preheating part at room temperature is 0.25Ω / cm to 28Ω / cm.

3. The heating component according to claim 1, characterized in that: The Curie temperature of the preheating part is 100°C to 200°C; and / or the resistivity of the preheating part at room temperature is 1Ω / cm to 20Ω / cm; and / or the lift-to-drag ratio of the preheating part is 1×10 3 ~1×10 5 .

4. The heating component according to claim 1, characterized in that: The preheating part is selected from one of a BaTiO3-based PTC ceramic having a porous structure, a SrTiO3-based PTC ceramic having a porous structure, a PbTiO3-based PTC ceramic having a porous structure, and a V2O3-based PTC ceramic having a porous structure.

5. The heating component according to claim 3, characterized in that: The preheating part is doped with at least one of La, Y, Nb and Sb.

6. The heating component according to any one of claims 1 to 5, characterized in that: The resistivity of the atomization part at room temperature is 1×10 1 Ω / cm~1×10 6 Ω / cm; and / or, the resistivity of the atomization portion at 60°C~300°C is 1×10 -1 Ω / cm ~1×10 2 Ω / cm.

7. The heating component according to claim 6, characterized in that: The atomization portion is doped with at least one of La, Nd and Ce.

8. The heating component according to any one of claims 1 to 5, characterized in that: It also includes a liquid guiding part, which is located on a side of the preheating part away from the atomizing part, and the liquid guiding part is made of porous ceramic.

9. An atomizer, characterized in that: include: A liquid storage container, wherein the liquid storage container has a liquid storage cavity for storing the liquid to be atomized, and the liquid storage cavity is provided with a liquid outlet; A heating component is used to atomize the liquid to be atomized, the heating component is the heating component according to any one of claims 1 to 8, and the preheating part is close to the liquid outlet.

10. The atomizer according to claim 9, characterized in that The preheating part is located between the atomizing part and the liquid outlet, and the atomizing part is used to atomize the liquid to be atomized conducted through the preheating part.

11. An electronic atomization device, characterized in that: include: Atomizer, the atomizer comprising: A liquid storage container, wherein the liquid storage container has a liquid storage cavity for storing the liquid to be atomized, and the liquid storage cavity is provided with a liquid outlet; A heating component, used for atomizing the liquid to be atomized, wherein the heating component is the heating component according to any one of claims 1 to 8, and the preheating part is close to the liquid outlet; A power source is used to supply power to the atomizer.

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