CN116406858A - Atomizing core, preparation method thereof, atomizer and electronic atomizing device - Google Patents

Abstract

The invention discloses an atomization core and a preparation method thereof, an atomizer and an electronic atomization device, wherein the atomization core comprises a liquid guide body, a heating body and a heat insulation liquid guide layer, the heating body is positioned on the liquid outlet side of the liquid guide body and is arranged at intervals with the liquid guide body, the heat insulation liquid guide layer is arranged between the liquid guide body and the heating body, and the heat insulation liquid guide layer is sintered and connected on the surface of the liquid guide body opposite to the heating body so as to enable the liquid guide body to be connected with the heating body. So, through setting up thermal-insulated liquid guide layer between liquid guide and the heat-generating body that the interval set up to when making liquid guide and heat-generating body be connected, can realize the thermal-insulated effect between liquid guide and the heat-generating body, heat that heat-generating body department can reduce to liquid transmission promptly can reduce relatively to the heat loss of heat-generating body, thereby can improve the atomizing speed of atomizing core.

Description

Atomizing core, preparation method thereof, atomizer and electronic atomizing device

Technical Field

The invention relates to the technical field of electronic atomization, in particular to an atomization core, a preparation method thereof, an atomizer and an electronic atomization device.

Background

As an important component of electronic atomizing devices, atomizing cores have been the focus of research by those skilled in the art. The conductive ceramic atomizing core has the advantages of high dry burning resistance, no peculiar smell, no precipitate at high temperature, high oxidation resistance and the like, and is an ideal atomizing material.

However, the current conductive ceramic atomizing core on the market has the common hot melting problem, if the monomer is made thicker, the conductive ceramic atomizing core can be melted more, the atomizing speed is slower, so that the first few smoke absorbed by a user are smaller or even no smoke, and the high-power driving is needed during working, so that the energy consumption is much higher than that of the common atomizing core; if the monomer is made thinner, although the problem of large hot melting can be solved, the conductive ceramic atomizing core has poor heat shock resistance and is easy to damage, and meanwhile, the heat is easily conducted to the atomized liquid due to the thinness, so that the temperature of the oil cup is rapidly increased to generate scalding, and the bad experience of scalding hands is brought to a user.

Disclosure of Invention

The invention mainly aims to provide an atomization core, a preparation method thereof, an atomizer and an electronic atomization device, and aims to solve the technical problems that when an existing porous conductive ceramic body is made into a sheet, the thermal shock resistance is poor, heat is easily conducted to an atomized liquid, and therefore the temperature of an oil cup is rapidly increased and scalded.

To achieve the above object, the present invention proposes an atomizing core including:

a liquid guide body, wherein a plurality of pores are distributed in the liquid guide body, and the pores are used for liquid guide;

the heating body is positioned on the liquid outlet side of the liquid guide body and is arranged at intervals with the liquid guide body; and

the heat-insulating liquid-guiding layer is arranged between the liquid-guiding body and the heating body, and is connected to the surface of the liquid-guiding body opposite to the heating body in a sintering manner so as to enable the liquid-guiding body to be connected with the heating body, wherein the heat-insulating liquid-guiding layer is a porous ceramic layer, and the porosity of the porous ceramic layer is 20% -70%.

In an alternative embodiment, the porosity of the thermally insulating liquid-conducting layer is greater than the porosity of the liquid-conducting layer.

In an alternative embodiment, the material of the insulating liquid guide layer includes at least one of silicon carbide, silicon oxide, aluminum oxide, or zirconium oxide.

In an alternative embodiment, the insulating liquid-guiding layer is a sand layer made of at least one material selected from silicon carbide, silicon oxide, aluminum oxide, or zirconium oxide.

In an alternative embodiment, the thickness of the heating element is 0.1mm to 0.5mm.

In an alternative embodiment, the heating element is a porous conductive ceramic body, and the porous conductive ceramic body is formed by mixing at least one material of silicon carbide, silicon oxide, aluminum oxide or zirconium oxide with conductive powder and sintering.

In an alternative embodiment, the liquid guiding body is a porous conductive ceramic body made of the same material as the heating body; or alternatively

The liquid guide body is a porous conductive ceramic body which is made of a material different from that of the heating body.

In an alternative embodiment, the sintering temperature of the liquid guiding body is equal to the sintering temperature of the heating body, and the sintering temperature of the heat insulating liquid guiding layer is greater than the sintering temperature of the liquid guiding body or the heating body.

In an alternative embodiment, the porosity of the heater is 30% to 70%.

In an alternative embodiment, the liquid guiding body is a porous ceramic body, and the porous ceramic body is sintered and formed by at least one material of silicon carbide, silicon oxide, aluminum oxide or zirconium oxide.

In an alternative embodiment, the sintering temperature of the liquid guiding body is equal to the sintering temperature of the heating body, and the sintering temperature of the heat insulating liquid guiding layer is greater than the sintering temperature of the liquid guiding body or the heating body.

In an alternative embodiment, the heating element coincides with the projection of the insulating liquid guiding layer on the liquid guiding body.

In an alternative embodiment, the contact areas among the heating element, the heat insulation liquid guide layer and the liquid guide layer are equal.

In an alternative embodiment, the surface of the heating element facing away from the liquid guide body is provided with a first connecting area and a second connecting area which are oppositely arranged, wherein the first connecting area is used for being electrically connected to a first electrode of a power supply through a silver paste coating or a first wire pin, and the second connecting area is used for being electrically connected to a second electrode of the power supply through a silver paste coating or a second wire pin, and the polarity of the first electrode is opposite to that of the second electrode.

In order to achieve the above purpose, the invention also provides a preparation method of the atomizing core, which comprises the following steps:

preparing a liquid guide body and a heating body, wherein the heating body is arranged on the liquid outlet side of the liquid guide body and is spaced from the liquid guide body; and

and uniformly coating a preset mixed material on the surface of the liquid guide body opposite to the heating body, and sintering to obtain the heat-insulating liquid guide layer, wherein the preset mixed material comprises at least one of silicon carbide, silicon oxide, aluminum oxide or zirconium oxide.

In an alternative embodiment, the porosity of the thermally insulating liquid-conducting layer is greater than the porosity of the liquid-conducting layer.

In an alternative embodiment, the insulating liquid-guiding layer is a sand layer made of at least one material selected from silicon carbide, silicon oxide, aluminum oxide, or zirconium oxide. In an alternative embodiment, the step of preparing the liquid guide and the heating element includes:

mixing at least one material of silicon carbide, silicon oxide, aluminum oxide or zirconium oxide with conductive powder, and sintering to obtain the heating element; and

sintering at least one material of silicon carbide, silicon oxide, aluminum oxide or zirconium oxide to obtain the liquid guide body.

In an alternative embodiment, the step of preparing the liquid guide and the heating element includes:

mixing at least one material of silicon carbide, silicon oxide, aluminum oxide or zirconium oxide with conductive powder, and sintering to obtain the heating element; and

mixing at least one material of silicon carbide, silicon oxide, aluminum oxide or zirconium oxide with conductive powder, and sintering to obtain the conductive liquid.

In an alternative embodiment, the sintering temperature of the liquid guiding body is equal to the sintering temperature of the heating body, and the sintering temperature of the heat insulating liquid guiding layer is greater than the sintering temperature of the liquid guiding body or the heating body.

In an alternative embodiment, the surface of the heating element facing away from the liquid guiding body is provided with a first connecting area and a second connecting area which are oppositely arranged, and the preparation method of the atomizing core comprises the following steps:

the first connecting region is coated with silver paste coating or the prepared first wire leg is connected to the first connecting region, and the second connecting region is coated with silver paste coating or the prepared second wire leg is connected to the first connecting region.

To achieve the above object, the present invention also proposes an atomizer comprising the aforementioned atomizing core.

In order to achieve the above object, the present invention further provides an electronic atomization device, which includes the aforementioned atomizer.

Compared with the prior art, the invention has the beneficial effects that:

in the technical scheme of the invention, the atomizing core comprises a liquid guide body, a heating body and a heat insulation liquid guide layer, wherein a plurality of holes are distributed in the liquid guide body and are used for guiding liquid, the heating body is positioned on the liquid outlet side of the liquid guide body and is arranged at intervals with the liquid guide body, and the heat insulation liquid guide layer is arranged between the liquid guide body and the heating body and is connected on the surface of the liquid guide body opposite to the heating body in a sintering way so as to enable the liquid guide body to be connected with the heating body. Therefore, the heat insulation liquid guide layer is arranged between the liquid guide and the heating body which are arranged at intervals, so that the heat insulation effect between the liquid guide and the heating body can be realized when the liquid guide is connected with the heating body, namely, the heat of the heating body cannot be conducted to the liquid guide position through the heat insulation liquid guide layer, and the phenomenon that the temperature of the oil cup is rapidly increased and the oil cup is scalded can be avoided; moreover, as the heat of the heating element can not be conducted to the liquid guide body through the heat insulation liquid guide layer, the heat of the heat-conducting body can be reduced, namely, the heat loss of the heating element can be relatively reduced, and the heating element can be ensured to have sufficient heat to intensively heat the atomized liquid, so that the atomization speed of the atomization core is effectively improved.

Drawings

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

FIG. 1 is a schematic view of a mist core in accordance with an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of a atomizing core according to another embodiment of the present invention;

FIG. 3 is a schematic view of the structure of a atomizing core according to another embodiment of the present invention;

FIG. 4 is a flow chart showing the steps of a method for preparing a atomized core according to an embodiment of the invention.

Reference numerals illustrate:

100-liquid guiding;

200-a heating element;

300-insulating liquid-conducting layer;

400-first terminal pin;

500-second terminal pin;

a-first connection region, B-second connection region, H-liquid outlet side.

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. 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.

It should be noted that, if a directional indication (such as up, down, left, right, front, and rear … …) is included in the embodiment of the present invention, the directional indication is merely used to explain a relative positional relationship, a movement condition, and the like between the components in a specific posture, and if the specific posture is changed, the directional indication is correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if "and/or", "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B ", including a scheme, or B scheme, or a scheme where a and B meet simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

An embodiment of the present application provides an atomizing core.

Referring to fig. 1 to 3, the atomizing core includes a liquid guide 100, a heating element 200, and a heat insulating liquid guide layer 300. The liquid guide 100 has a plurality of pores distributed therein for guiding liquid. The heating element 200 is located on the liquid outlet side H of the liquid guide 100 and is spaced apart from the liquid guide 100. The heat insulating and conducting liquid layer 300 is provided between the liquid guide 100 and the heating element 200, and is sintered and connected to the surface of the liquid guide 100 opposite to the heating element 200 so that the liquid guide 100 is connected to the heating element 200.

In this embodiment, by arranging the heat insulating liquid layer 300 between the heat conducting body 100 and the heat generating body 200 which are arranged at intervals, the heat insulating effect between the heat conducting body 100 and the heat generating body 200 can be achieved while the heat conducting body 100 is connected with the heat generating body 200, that is, the heat generated by the heat generating body 200 is isolated from being conducted to the heat conducting body 100 by the heat insulating liquid layer 300, so that the phenomenon that the temperature of an oil cup contacted with the heat conducting body 100 is rapidly increased, and the oil cup is scalded is avoided; moreover, since the heat of the heating element 200 is not conducted to the liquid guiding body 100 through the heat insulation liquid guiding layer 300, the heat of the heating element 200 transmitted to the liquid guiding body can be reduced, namely, the heat loss of the heating element 200 can be relatively reduced, so that the heating element 200 is ensured to have sufficient heat to intensively heat the atomized liquid, and the atomization speed of the atomization core is effectively improved.

The atomized liquid is tobacco tar, that is, the tobacco tar can sequentially pass through the liquid guide 100 and the heat insulation liquid guide layer 300 and be conducted to the heating element 200 for heating and atomization, so as to form smokeable smoke.

The liquid guide 100, the heating element 200, and the heat insulating liquid guide layer 300 are stacked, wherein the heat insulating liquid guide layer 300 is provided between the liquid guide 100 and the heating element 200. The heat insulation liquid guide 300 is configured to insulate heat generated by the heating element 200 from being transmitted to the liquid guide 100, namely, to realize an insulation effect between the liquid guide 100 and the heating element 200, thereby preventing the oil cup from being scalded and improving the atomization speed of the atomization core; in addition, the heat-insulating liquid-guiding layer 300 is further configured to conduct the atomized liquid in the liquid-guiding body 100 into the heating element 200, so that after the heating element 200 is electrified, the atomized liquid is heated and atomized, and aerosol smog which can be sucked by a user is formed.

Further, the heat-insulating liquid-guiding layer 300 is formed between the liquid-guiding body 100 and the heating body 200 through a sintering process, so that the strength of the heat-insulating liquid-guiding layer 300 can be increased while the stable connection between the liquid-guiding body 100 and the heating body 200 is ensured, and the heat-generating body 200 is prevented from falling off from the liquid-guiding body 100 in the use process of the atomization core. In addition, the components of the insulating liquid-guiding layer 300 formed by the sintering process are more stable, and thus the insulating performance of the insulating liquid-guiding layer 300 can be improved.

In this embodiment, the liquid guiding body 100 is in a cuboid shape, the lower surface of the cuboid shape is used as the liquid inlet surface of the liquid guiding body 100, the upper surface of the cuboid shape is used as the liquid outlet surface of the liquid guiding body 100, that is, the atomized liquid is conducted into the liquid guiding body 100 from the liquid inlet surface of the liquid guiding body 100, is conducted to the heat insulation liquid guiding layer 300 from the liquid outlet surface of the liquid guiding body 100, and is then conducted to the heating body 200 from the heat insulation liquid guiding layer 300 for heating and atomizing, so as to form the inhalable aerosol.

The shape of the heat insulating liquid guiding layer 300 and the shape of the heat generating body 200 are both cuboid, that is, the same as the shape of the liquid guiding layer 100, and at this time, the projection of the heat generating body 200 and the heat insulating liquid guiding layer 300 on the liquid guiding body 10 are overlapped, that is, the contact area between the heat generating body 200 and the heat insulating liquid guiding layer 300 is equal.

Of course, the contact areas between the heat insulating liquid guide layer 300 and the liquid guide 100 may be equal, that is, the contact areas between the liquid guide 100, the heating element 200, and the heat insulating liquid guide layer 300 may be equal.

It should be understood that, in other embodiments, the contact areas between the heat insulating liquid guiding layer 300 and the liquid guiding layer 100 may be unequal, that is, the liquid guiding material may be disposed at the overlapping portion between the liquid guiding layer 100 and the heat insulating liquid guiding layer 300 to conduct the atomized liquid, and the non-liquid guiding material may be disposed at the non-overlapping portion between the liquid guiding layer 100 and the heat insulating liquid guiding layer 300 to block the conduction of the atomized liquid, which is not limited herein.

Alternatively, the shape of the liquid guide 100 may be a cylinder, a prism, or the like, which is not limited herein. Of course, in the present embodiment, the shape of the liquid guide 100 may be an irregular structure, for example, a truncated cone shape, etc., and is not limited thereto.

Further, in order to enable the heat insulating liquid guide layer 300 to conduct the atomized liquid at the liquid guide 100 to the heating body 200, the heat insulating liquid guide layer 300 is a porous ceramic layer which is a ceramic material sintered at a high temperature and having a large number of pore structures communicating with each other and also communicating with the surface of the material in the body so as to be capable of conducting the atomized liquid, wherein the ceramic material includes at least one of silicon carbide, silicon oxide, aluminum oxide, or zirconium oxide.

Wherein the porosity of the porous ceramic layer is 20% -70%. The porosity of the porous ceramic layer can be understood as the flow rate per unit area through the porous ceramic layer. The porous ceramic layer is formed by the gaps among the grains in the porous ceramic layer, namely the porosity of the porous ceramic layer can also be the gaps among the grains of the porous ceramic layer, and the gaps are used for the atomized liquid to pass through.

Since the liquid guide 100 can conduct the atomized liquid into the heat insulation liquid guide layer 300, i.e. in this embodiment, in order to facilitate the conduction of the atomized liquid in the liquid guide 100 into the heat insulation liquid guide layer 300, the porosity of the heat insulation liquid guide layer 300 is larger than that of the liquid guide layer 100. For example, when the porosity of the liquid guiding body 100 is 50%, the porosity of the heat insulation liquid guiding layer 300 can be any value (excluding 50%) between 50% and 70%, so that all the atomized liquid at the liquid guiding body 100 can be conducted to the heat insulation liquid guiding layer 300 and conducted to the heating body 200 through the heat insulation liquid guiding layer 300, thereby ensuring that the heating body 200 has sufficient atomized liquid, and thus, the problem of liquid shortage and dry heating of the heating body 200 in the working process can be effectively avoided.

In particular embodiments, the material of the insulating liquid guide layer 300 may be at least one of silicon carbide, silicon oxide, aluminum oxide, and zirconium oxide. More specifically, the insulating liquid-guiding layer 300 is a sand grain layer made of at least one material selected from silicon carbide, silicon oxide, aluminum oxide and zirconium oxide, and the sand grain layer has a single-layer structure and has the characteristics of small thickness, good insulation and liquid guiding.

In this embodiment, the heating element 200 is a porous conductive ceramic body, which is formed by mixing at least one material of silicon carbide, silicon oxide, aluminum oxide or zirconium oxide with conductive powder and sintering, and the material of the conductive powder may be at least one material of titanium nitride, zirconium nitride, titanium carbonitride, titanium carbide, zirconium carbide, thallium carbide, hafnium carbide, titanium boride, zirconium boride, thallium boride, hafnium boride, molybdenum silicide and tungsten carbide. That is, the material of the heat-generating body 200 may be the same as that of the insulating conductive layer 300 except for the conductive powder. For example, when the material of the insulating and conductive layer 300 is silicon carbide, the material of the heating element 200 is silicon carbide mixed with conductive powder, and the material is not limited thereto.

Of course, other materials than the conductive powder in the heating element 200 may be different from the material of the heat insulating conductive layer 300. For example, when the material of the insulating and conductive layer 300 is silicon carbide, the material of the heating element 200 is silicon oxide mixed with conductive powder, and the material is not limited thereto.

Further, the liquid guide 100 is a porous conductive ceramic body made of the same material as the heating element 200. For example, when the material of the liquid 100 is a mixture of silicon carbide and hafnium boride, the material of the heating element 200 is a mixture of silicon carbide and hafnium boride, and the present invention is not limited thereto.

The liquid conductor 100 may be a porous conductive ceramic body made of a material different from that of the heating element 200. For example, when the material of the liquid 100 is a mixture of silicon carbide and hafnium boride, the material of the heating element 200 is a mixture of silicon oxide and hafnium boride, or the material of the heating element 200 is a mixture of silicon carbide and molybdenum silicide, or the material of the heating element 200 is a mixture of silicon oxide and molybdenum silicide, the material is not limited thereto.

Of course, the materials listed above for the liquid guide 100, the heating element 200, and the heat insulating and conducting layer 300 are only for convenience in describing the embodiment, and are not limited to the materials of the liquid guide 100, the heating element 200, and the heat insulating and conducting layer 300.

In this embodiment, the materials of the liquid guide 100 and the heating element 200 are the same, and the liquid guide 100 and the heating element 200 can be obtained by sintering the same material at one time, without material reconfiguration for sintering, thereby saving time and cost.

Specifically, in order to enable the heat-insulating liquid-guiding layer 300 to be sintered and connected to the liquid-guiding body 100 and the heating element 200, the sintering temperature of the liquid-guiding body 100 is equal to the sintering temperature of the heating element 200, and the sintering temperature of the heat-insulating liquid-guiding layer 300 is greater than the sintering temperature of the liquid-guiding body 100 or the heating element 200, so that the liquid-guiding body 100, the heating element 200 and the heat-insulating conductive layer 300 can be mutually connected; and the stability of the heat insulation liquid guide layer 300 can be improved through the sintering process, so that the connection among the liquid guide 100, the heating body 200 and the heat insulation conductive layer 300 is more stable.

Further, in order to enable all the atomized liquid in the heat insulation liquid guiding layer 300 to be transmitted to the heating element 200, the porosity of the heating element 200 is 30% -70%, so that the liquid guiding speed of the heating element 200 is ensured, and the problems of liquid shortage, dry burning or liquid leakage of the heating element 200 in the working process are prevented.

Of course, in another embodiment, the liquid guiding body 100 may also be a porous ceramic body, and the porous ceramic body is sintered and formed by at least one material of silicon carbide, silicon oxide, aluminum oxide or zirconium oxide. That is, in this case, the liquid guide 100 and the heat insulating liquid guide layer 300 may be made of the same material. For example, the material of the liquid guide 100 is alumina, and the insulating liquid guide layer 300 is also alumina, which is not limited thereto.

Alternatively, liquid conductor 100 and insulating liquid conductor layer 300 may be made of different materials. For example, the material of the liquid guide 100 is alumina, and the insulating liquid guide layer 300 is zirconia, which is not limited thereto.

Further, in order to reduce the hot melting of the heat generating body 200 and to make the heat generation of the heat generating body 200 faster, the thickness of the heat generating body 200 of this embodiment is 0.1mm to 0.5mm. Therefore, the thickness of the heating element 200 is small, the heating is faster, and the heat generated by the heating element 200 cannot be conducted to the liquid guide 100 because the heat-insulating liquid guide layer 300 is sintered and connected between the heating element 200 and the liquid guide 100, so that the phenomenon that the oil cup is scalded due to the rapid temperature rise of the oil cup contacted with the liquid guide 100 is avoided.

Optionally, the thickness of the thermally insulating liquid-conducting layer 300 is less than 0.5mm.

The thickness of the liquid guide 100 in this embodiment is 2mm to 6mm, and specific values may be set according to actual production requirements, and are not limited herein.

Further, the surface of the heating element 200 facing away from the liquid guiding body 100 is provided with a first connection area a and a second connection area B, wherein the first connection area a is used for being electrically connected to a first electrode of the power supply through a silver paste coating or a first wire leg, and the second connection area B is used for being electrically connected to a second electrode of the power supply through a silver paste coating or a second wire leg, and the polarities of the first electrode and the second electrode are opposite.

Taking the first terminal pin and the second terminal pin as an example, referring to fig. 2 or 3, one end of the first terminal pin 400 is electrically connected to the first connection area a, one end of the second terminal pin 500 is electrically connected to the second connection area B, the other end of the first terminal pin 400 is used for connecting to a first electrode of a power supply, and the other end of the second terminal pin 500 is used for connecting to a second electrode of the power supply.

The first leg 400 is a positive leg, the second leg 500 is a negative leg, the first electrode is a positive pole, and the second electrode is a negative pole. That is, the positive electrode terminal is connected to the positive electrode of the power supply, the negative electrode terminal is connected to the negative electrode of the power supply, and the first connection area a and the second connection area B are arranged opposite to each other, so that the positive electrode terminal and the negative electrode terminal are arranged at intervals, the problem of short circuit caused by too close distance between the positive electrode terminal and the negative electrode terminal can be avoided, and the problem of short circuit caused by normal energizing and heating of the heating element 200 is avoided.

In another embodiment, the second leg 500 is a positive leg, the first leg 400 is a negative leg, the second electrode is a positive pole, and the first electrode is a negative pole.

Of course, in the present embodiment, since the heating element 200 is rectangular, that is, the first wire leg 400 and the second wire leg 500 may be connected to the first connection region a and the second connection region B along the length direction of the heating element 200, respectively (as shown in fig. 2); alternatively, the first leg 400 and the second leg 500 may be connected to the first connection region a and the second connection region B, respectively, along the width direction of the heating element 200 (as shown in fig. 3); alternatively, the first leg 400 and the second leg 500 may be connected to the first connection region a and the second connection region B (not shown) along the height direction of the heating element 200, respectively, and are not limited thereto.

In other embodiments, when the heating element 200 is in other shapes, the first wire leg 400 and the second wire leg 500 are connected to the heating element 200 at intervals, so as to avoid the problem of short circuit between the first wire leg 400 and the second wire leg 500, thereby ensuring that the heating element 200 can be normally electrified and heated without short circuit.

Further, the first wire leg 400 is connected to the first connection area a by means of laser welding or soldering; the second terminal 500 is connected to the second connection area B by laser welding or soldering, which is not limited herein.

The atomizing core of the above embodiment includes the liquid guide 100, the heating element 200, and the heat insulating liquid guide layer 300. The liquid guide 100 has a plurality of pores distributed therein. The heating element 200 is located on the liquid outlet side of the liquid guide 100 and is spaced apart from the liquid guide 100. The heat insulating and conducting liquid layer 300 is provided between the liquid guide 100 and the heating element 200, and is sintered and connected to the surface of the liquid guide 100 opposite to the heating element 200 so that the liquid guide 100 is connected to the heating element 200. In this way, by arranging the heat insulating liquid layer 300 between the heat conducting body 100 and the heat generating body 200 which are arranged at intervals, the heat insulating effect between the heat conducting body 100 and the heat generating body 200 can be realized when the heat conducting body 100 is connected with the heat generating body 200, namely, the heat generated by the heat conducting body 200 is isolated from being conducted to the heat conducting body 100 through the heat insulating liquid 300, so that the phenomenon that the oil cup is scalded due to the rapid temperature rise of the oil cup contacted with the heat conducting body 100 is avoided; moreover, since the heat of the heating element 200 is not conducted to the liquid guiding body 100 through the heat insulation liquid guiding layer 300, the heat of the heating element 200 transmitted to the liquid guiding body can be reduced, namely, the heat loss of the heating element 200 can be relatively reduced, so that the heating element 200 is ensured to have sufficient heat to intensively heat the atomized liquid, and the atomization speed of the atomization core is effectively improved.

Based on the embodiment, the application also discloses a preparation method of the atomization core.

As shown in fig. 4, the preparation method of the atomizing core includes:

s10, preparing a liquid guide body and a heating body, wherein the heating body is arranged on the liquid outlet side of the liquid guide body and is spaced from the liquid guide body;

s20, uniformly coating a preset mixed material on the surface of the liquid guide body opposite to the heating body, and then sintering to obtain the heat insulation liquid guide layer, wherein the preset mixed material comprises at least one of silicon carbide, silicon oxide, aluminum oxide or zirconium oxide.

In the step S10 of this embodiment, when preparing the liquid guide 100 and the heating element 200, at least one material selected from silicon carbide, silicon oxide, aluminum oxide and zirconium oxide is mixed with conductive powder and sintered to obtain the heating element 200; and sintering at least one material of silicon carbide, silicon oxide, aluminum oxide or zirconium oxide to obtain the liquid guide 100. The material of the conductive powder can be at least one of titanium nitride, zirconium nitride, titanium carbonitride, titanium carbide, zirconium carbide, thallium carbide, hafnium carbide, titanium boride, zirconium boride, thallium boride, hafnium boride, molybdenum silicide and tungsten carbide.

The material of the heating element 200 other than the conductive powder may be the same as that of the liquid conductor 100. For example, when the material of the liquid conductor 100 is silicon carbide, the material of the heating element 200 is silicon carbide mixed with conductive powder, and the material is not limited thereto.

Of course, the heating element 200 may be made of a material other than the conductive powder, which is different from the material of the liquid conductor 100. For example, when the material of the liquid conductor 100 is silicon carbide, the material of the heating element 200 is silicon oxide mixed with conductive powder, and the material is not limited thereto.

Of course, in this embodiment, the liquid guide 100 is the same material as the heating element 200. At least one material of silicon carbide, silicon oxide, aluminum oxide or zirconium oxide is mixed with conductive powder and sintered to obtain a heating element 200; and mixing at least one material of silicon carbide, silicon oxide, aluminum oxide or zirconium oxide with conductive powder and sintering to obtain the liquid guide 100.

At this time, the liquid guide 100 and the heating element 200 may be formed by one-step sintering using the same material, and the liquid guide 100 and the heating element 200 may be obtained respectively, without material reconfiguration for sintering, thereby saving time and cost.

After the liquid guiding body 100 and the heating body 200 are obtained, the heating body 200 is arranged on the liquid outlet side H of the liquid guiding body 100 and is arranged at intervals from the liquid guiding body 100, so that a preset mixed material is uniformly coated on the surface of the liquid guiding body 100 opposite to the heating body 200 and then sintered, and the heat insulation liquid guiding layer 300 is obtained, wherein the preset mixed material comprises at least one of silicon carbide, silicon oxide, aluminum oxide or zirconium oxide.

Namely, the heat insulation liquid guide 300 is configured to insulate heat generated by the heating element 200 from being transmitted to the liquid guide 100, namely, an insulation effect between the liquid guide 100 and the heating element 200 is realized, thereby preventing the oil cup from being scalded and improving the atomizing speed of the atomizing core; in addition, the heat-insulating liquid-guiding layer 300 is further configured to conduct the atomized liquid in the liquid-guiding body 100 into the heating element 200, so that after the heating element 200 is electrified, the atomized liquid is heated and atomized, and aerosol smog which can be sucked by a user is formed.

Further, the heat-insulating liquid-guiding layer 300 is formed between the liquid-guiding body 100 and the heating body 200 through a sintering process, so that the strength of the heat-insulating liquid-guiding layer 300 can be increased while the stable connection between the liquid-guiding body 100 and the heating body 200 is ensured, and the heat-generating body 200 is prevented from falling off from the liquid-guiding body 100 in the use process of the atomization core. In addition, the components of the insulating liquid-guiding layer 300 formed by the sintering process are more stable, and thus the insulating performance of the insulating liquid-guiding layer 300 can be improved.

Further, in order to enable the heat-insulating liquid-guiding layer 300 to conduct the atomized liquid at the liquid-guiding body 100 to the heating body 200, the heat-insulating liquid-guiding layer 300 is a porous ceramic layer, and the porous ceramic layer is a ceramic material sintered at a high temperature and having a plurality of pore structures communicated with each other and the surface of the material in the body so as to conduct the atomized liquid, wherein the ceramic material is a preset mixed material, that is, the ceramic material comprises at least one of silicon carbide, silicon oxide, aluminum oxide or zirconium oxide.

Wherein the porosity of the porous ceramic layer is 20% -70%. The porosity of the porous ceramic layer can be understood as the flow rate per unit area through the porous ceramic layer. The porous ceramic layer is formed by the gaps among the grains in the porous ceramic layer, namely the porosity of the porous ceramic layer can also be the gaps among the grains of the porous ceramic layer, and the gaps are used for the atomized liquid to pass through.

Since the liquid guide 100 can conduct the atomized liquid into the heat insulation liquid guide layer 300, i.e. in this embodiment, in order to facilitate the conduction of the atomized liquid in the liquid guide 100 into the heat insulation liquid guide layer 300, the porosity of the heat insulation liquid guide layer 300 is larger than that of the liquid guide layer 100. For example, when the porosity of the liquid guiding body 100 is 50%, the porosity of the heat insulation liquid guiding layer 300 can be any value (excluding 50%) between 50% and 70%, so that all the atomized liquid at the liquid guiding body 100 can be conducted to the heat insulation liquid guiding layer 300 and conducted to the heating body 200 through the heat insulation liquid guiding layer 300, thereby ensuring that the heating body 200 has sufficient atomized liquid, and thus, the problem of liquid shortage and dry heating of the heating body 200 in the working process can be effectively avoided.

In particular embodiments, the material of the insulating liquid guide layer 300 may be at least one of silicon carbide, silicon oxide, aluminum oxide, and zirconium oxide. More specifically, the insulating liquid-guiding layer 300 is a sand grain layer made of at least one material selected from silicon carbide, silicon oxide, aluminum oxide and zirconium oxide, and the sand grain layer has a single-layer structure and has the characteristics of small thickness, good insulation and liquid guiding.

In order to enable the heat-insulating liquid-guiding layer 300 to be sintered and connected to the liquid-guiding body 100 and the heating element 200, the sintering temperature of the liquid-guiding body 100 is equal to the sintering temperature of the heating element 200, and the sintering temperature of the heat-insulating liquid-guiding layer 300 is greater than the sintering temperature of the liquid-guiding body 100 or the heating element 200, so that the liquid-guiding body 100, the heating element 200 and the heat-insulating conductive layer 300 can be mutually connected; and the stability of the heat insulation liquid guide layer 300 can be improved through the sintering process, so that the connection among the liquid guide 100, the heating body 200 and the heat insulation conductive layer 300 is more stable.

Further, in order to reduce the hot melting of the heat generating body 200 and to make the heat generation of the heat generating body 200 faster, the thickness of the heat generating body 200 of this embodiment is 0.1mm to 0.5mm. Therefore, the thickness of the heating element 200 is small, the heating is faster, and the heat generated by the heating element 200 cannot be conducted to the liquid guide 100 because the heat-insulating liquid guide layer 300 is sintered and connected between the heating element 200 and the liquid guide 100, so that the phenomenon that the oil cup is scalded due to the rapid temperature rise of the oil cup contacted with the liquid guide 100 is avoided.

Optionally, the thickness of the thermally insulating liquid-conducting layer 300 is less than 0.5mm.

The thickness of the liquid guide 100 in this embodiment is 2mm to 6mm, and specific values may be set according to actual production requirements, and are not limited herein.

Further, the surface of the heating element 200 facing away from the liquid guiding body 100 is provided with a first connection area a and a second connection area B which are oppositely arranged, and the preparation method of the atomization core comprises the following steps: the first connecting region is coated with silver paste coating or the prepared first wire leg is connected to the first connecting region, and the second connecting region is coated with silver paste coating or the prepared second wire leg is connected to the first connecting region. Wherein the prepared first wire leg and the second wire leg can be a pre-prepared wire leg structure; alternatively, the standard stitch structure prepared in advance is not limited herein.

Namely, the preparation method provided by the embodiment is characterized in that the liquid guiding body and the heating body are prepared, wherein the heating body is arranged on the liquid outlet side of the liquid guiding body and is spaced from the liquid guiding body, and a preset mixed material is uniformly coated on the surface of the liquid guiding body opposite to the heating body and then sintered to obtain the heat insulation liquid guiding layer, wherein the preset mixed material comprises at least one of silicon carbide, silicon oxide, aluminum oxide or zirconium oxide.

In this way, by arranging the heat insulating liquid layer 300 between the heat conducting body 100 and the heat generating body 200 which are arranged at intervals, the heat insulating effect between the heat conducting body 100 and the heat generating body 200 can be realized when the heat conducting body 100 is connected with the heat generating body 200, namely, the heat generated by the heat conducting body 200 is isolated from being conducted to the heat conducting body 100 through the heat insulating liquid 300, so that the phenomenon that the oil cup is scalded due to the rapid temperature rise of the oil cup contacted with the heat conducting body 100 is avoided; moreover, since the heat of the heating element 200 is not conducted to the liquid guiding body 100 through the heat insulation liquid guiding layer 300, the heat of the heating element 200 transmitted to the liquid guiding body can be reduced, namely, the heat loss of the heating element 200 can be relatively reduced, so that the heating element 200 is ensured to have sufficient heat to intensively heat the atomized liquid, and the atomization speed of the atomization core is effectively improved.

Based on the embodiment of the atomizing core, the application also discloses an atomizer, and the atomizer comprises the atomizing core in the embodiment, and has the same technical effect as the atomizing core due to the structural improvement of the atomizing core, and is not repeated here.

Based on the embodiment of the atomizing core, the application also discloses an electronic atomizing device, which comprises the atomizer in the embodiment, and has the same technical effect as the atomizer due to the structural improvement of the atomizer, and the electronic atomizing device of the embodiment is not repeated here.

Specifically, the electronic atomization device may be an electronic cigarette. In this case, the atomized liquid according to the above embodiment of the present invention may be a medium such as tobacco tar.

It should be noted that, other contents of the atomizing core, the atomizer and the electronic atomizing device disclosed in the present disclosure may be referred to the prior art, and will not be described herein.

The foregoing description of the embodiments of the present invention is merely an optional embodiment of the present invention, and is not intended to limit the scope of the invention, and all equivalent structural modifications made by the present invention in the light of the present invention, the description of which and the accompanying drawings, or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims (23)

1. An atomizing core, comprising:

a liquid guide body, wherein a plurality of pores are distributed in the liquid guide body, and the pores are used for liquid guide;

the heating body is positioned on the liquid outlet side of the liquid guide body and is arranged at intervals with the liquid guide body; and

the heat-insulating liquid-guiding layer is arranged between the liquid-guiding body and the heating body, and is connected to the surface of the liquid-guiding body opposite to the heating body in a sintering manner so as to enable the liquid-guiding body to be connected with the heating body, wherein the heat-insulating liquid-guiding layer is a porous ceramic layer, and the porosity of the porous ceramic layer is 20% -70%.

2. The atomizing core of claim 1, wherein the thermally insulating liquid transfer layer has a porosity greater than a porosity of the liquid transfer layer.

3. The atomizing core of claim 1 or 2, wherein the material of the thermally insulating liquid transfer layer comprises at least one of silicon carbide, silicon oxide, aluminum oxide, or zirconium oxide.

4. The atomizing core of claim 3, wherein the thermally insulating liquid transfer layer is a sand grain layer of at least one of silicon carbide, silicon oxide, aluminum oxide, or zirconium oxide.

5. An atomizing core as set forth in claim 1 or 2, wherein said heat generating body has a thickness of 0.1mm to 0.5mm.

6. An atomizing core as set forth in claim 1 or 2, wherein said heat generating body is a porous conductive ceramic body formed by mixing at least one material of silicon carbide, silicon oxide, aluminum oxide or zirconium oxide with conductive powder and sintering.

7. An atomizing core as set forth in claim 6, wherein said liquid conductor is a porous conductive ceramic body of the same material as said heat generating body; or alternatively

The liquid guide body is a porous conductive ceramic body which is made of a material different from that of the heating body.

8. The atomizing core of claim 7, wherein the liquid guide has a sintering temperature equal to a sintering temperature of the heat generating body, and the heat insulating liquid guide layer has a sintering temperature greater than the sintering temperature of the liquid guide or the heat generating body.

9. An atomizing core as set forth in claim 6, wherein said heat generating body has a porosity of 30% to 70%.

10. The atomizing core of claim 6, wherein the liquid conductor is a porous ceramic body sintered from at least one of silicon carbide, silicon oxide, aluminum oxide, or zirconium oxide.

11. The atomizing core of claim 10, wherein the liquid guide has a sintering temperature equal to a sintering temperature of the heat generating body, and the heat insulating liquid guide layer has a sintering temperature greater than the sintering temperature of the liquid guide or the heat generating body.

12. An atomizing core as set forth in claim 1 or 2, wherein said heat generating body coincides with the projection of said heat insulating liquid guiding layer onto said liquid guiding body.

13. The atomizing core of claim 12, wherein a contact area between the heat generating body, the thermally insulating liquid transfer layer, and the liquid transfer layer is equal.

14. An atomising wick according to claim 1 or 2 wherein the surface of the heating element facing away from the liquid-conducting body has oppositely disposed first and second connection regions, the first connection region being for electrical connection to a first electrode of a power source via a silver paste coating or a first leg, the second connection region being for electrical connection to a second electrode of the power source via a silver paste coating or a second leg, wherein the polarity of the first electrode is opposite to the polarity of the second electrode.

15. A method of preparing an atomizing core, comprising the steps of:

preparing a liquid guide body and a heating body, wherein the heating body is arranged on the liquid outlet side of the liquid guide body and is spaced from the liquid guide body; and

and uniformly coating a preset mixed material on the surface of the liquid guide body opposite to the heating body, and sintering to obtain the heat-insulating liquid guide layer, wherein the preset mixed material comprises at least one of silicon carbide, silicon oxide, aluminum oxide or zirconium oxide.

16. The method of preparing an atomizing core of claim 15, wherein the thermally insulating liquid transfer layer has a porosity greater than a porosity of the liquid transfer layer.

17. The method of claim 15, wherein the thermally insulating liquid-conducting layer is a sand layer of at least one of silicon carbide, silicon oxide, aluminum oxide, or zirconium oxide.

18. The method of preparing an atomizing core as set forth in claim 15, wherein said step of preparing a liquid conductor and a heat generator includes:

mixing at least one material of silicon carbide, silicon oxide, aluminum oxide or zirconium oxide with conductive powder, and sintering to obtain the heating element; and

sintering at least one material of silicon carbide, silicon oxide, aluminum oxide or zirconium oxide to obtain the liquid guide body.

19. The method of preparing an atomizing core as set forth in claim 15, wherein said step of preparing a liquid conductor and a heat generator includes:

mixing at least one material of silicon carbide, silicon oxide, aluminum oxide or zirconium oxide with conductive powder, and sintering to obtain the heating element; and

mixing at least one material of silicon carbide, silicon oxide, aluminum oxide or zirconium oxide with conductive powder, and sintering to obtain the conductive liquid.

20. The method of producing an atomizing core according to claim 18 or 19, wherein the sintering temperature of the liquid guide is equal to the sintering temperature of the heat generating body, and the sintering temperature of the heat insulating liquid guide layer is greater than the sintering temperature of the liquid guide or the heat generating body.

21. The method of manufacturing an atomizing core according to claim 15, wherein the surface of the heating element facing away from the liquid guiding body has a first connection region and a second connection region which are disposed opposite to each other, the method comprising:

the first connecting region is coated with silver paste coating or the prepared first wire leg is connected to the first connecting region, and the second connecting region is coated with silver paste coating or the prepared second wire leg is connected to the first connecting region.

22. A nebulizer comprising a nebulizing core according to any one of claims 1 to 14.

23. An electronic atomizing device, comprising the atomizer of claim 22.

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