Atomizing core, atomizer and electronic atomization device

Abstract

The application discloses an atomizing core, an atomizer and an electronic atomizing device, wherein the atomizing core comprises: a porous conductive ceramic body provided with a positive electrode contact and a negative electrode contact, the porous conductive ceramic body is integrally distributed with a plurality of pores, the pores are used for guiding liquid and flowing gas, and the porous conductive ceramic body comprises: a liquid guiding portion; and a heating portion connected integrally with the liquid guiding portion, the heating portion is used for heating atomizing liquid which is conducted from the liquid guiding portion to the inside of the heating portion, the heating portion is arranged in a protruding mode from one side of the liquid guiding portion in a direction away from the liquid guiding portion, and the contact area between the heating portion and the liquid guiding portion is less than the surface area of one side of the liquid guiding portion connected with the heating portion. The atomizing core disclosed by the application can solve the technical problem that the existing atomizing core is prone to liquid deficiency dry burning and affects taste when the continuous use time is too long.

Description

Technical Field

[0001] This invention relates to the field of electronic atomization technology, and in particular to an atomizing core, an atomizer, and an electronic atomization device. Background Technology

[0002] As a crucial component of electronic atomizing devices, the atomizer coil has always been a focus of research for those skilled in the art. Among them, ceramic atomizer coils are widely used in electronic atomizing devices because they do not produce harmful substances even if they occasionally dry-burn.

[0003] Currently, ceramic atomizing cores on the market are mainly composed of a heating element and a liquid conductor. They are generally manufactured by embedding heating resistors (such as heating elements or heating wires) within the ceramic, or by using a thick-film printing process. That is, the heating element is either laid flat on top of the liquid conductor or covers the liquid conductor.

[0004] However, this type of ceramic atomizing core generally has the following defects:

[0005] When the heating resistor is working, the temperature around it rises rapidly to heat and atomize the surrounding atomizing liquid. The large amount of heat generated by the heating resistor creates pressure around it, pushing the atomizing liquid flowing from the guide liquid towards the heating resistor away from it. Only after the heating resistor stops working will the atomizing liquid flow from the guide liquid back to its vicinity. Once the heating resistor starts working again, the heat generated by the heating resistor will again create pressure, pushing the atomizing liquid away from it, thus creating a pulsed e-liquid feeding pattern. This can easily lead to the atomizer coil being used continuously for too long, risking dry burning due to insufficient liquid around the heating resistor, and will also affect the user's vaping experience. Summary of the Invention

[0006] The main objective of this invention is to provide an atomizing core, atomizer, and electronic atomization device, aiming to solve the technical problem that existing atomizing cores are prone to running out of liquid and dry burning when used continuously for too long, thus affecting the taste.

[0007] To achieve the above objectives, the present invention proposes an atomizing core, which includes:

[0008] A porous conductive ceramic body is provided with positive and negative contacts. The porous conductive ceramic body has multiple pores distributed throughout it, which are used for liquid conduction and gas flow. The porous conductive ceramic body comprises:

[0009] Liquid guiding section;

[0010] A heating element is integrally connected to the liquid guiding part. The heating element is used to heat and atomize the atomized liquid that is conducted from the liquid guiding part to the interior of the heating element. The heating element protrudes from one side of the liquid guiding part in a direction away from the liquid guiding part. The contact area between the heating element and the liquid guiding part is smaller than the surface area of ​​the side of the liquid guiding part to which the heating element is connected.

[0011] Furthermore, the liquid guiding part is provided with at least one power-off gap for blocking current.

[0012] Furthermore, at least one power-off gap is provided on the liquid guiding part along the vertical direction of the atomizing liquid flowing from the liquid guiding part to the heating part, and the length of the power-off gap is less than or equal to the height of the liquid guiding part along the vertical direction of the atomizing liquid flowing from the liquid guiding part to the heating part.

[0013] Furthermore, the atomizing core also includes a positive electrode pin and a negative electrode pin. The positive electrode contact and the negative electrode contact are both disposed on the heating element. The positive electrode pin is electrically connected to the positive electrode contact, and the negative electrode pin is electrically connected to the negative electrode contact.

[0014] Furthermore, the heating element is provided with a first silver paste coating and a second silver paste coating. The first silver paste coating covers the positive electrode contact and is soldered to the positive electrode lead, and the second silver paste coating covers the negative electrode contact and is soldered to the negative electrode lead.

[0015] Furthermore, along the length of the heating element, the positive electrode lead and the negative electrode lead are disposed opposite to each other on the side wall of the heating element.

[0016] Furthermore, both the positive electrode contact and the negative electrode contact are disposed on the liquid guiding part, and the liquid guiding part is provided with a first silver paste coating and a second silver paste coating. The first silver paste coating covers the positive electrode contact, and the second silver paste coating covers the negative electrode contact.

[0017] Furthermore, the atomizing core also includes a positive electrode lead and a negative electrode lead. The positive electrode contact and the negative electrode contact are both disposed on the liquid guiding part. The positive electrode lead is electrically connected to the positive electrode contact, and the negative electrode lead is electrically connected to the negative electrode contact.

[0018] Furthermore, in the vertical direction from the liquid guide portion to the heating portion, the height of the heating portion is less than or equal to the height of the liquid guide portion.

[0019] Furthermore, in the vertical direction from the liquid guide portion to the heating portion, the height of the heating portion is greater than the height of the liquid guide portion.

[0020] Furthermore, the height of the heating element in the vertical direction from the liquid guide to the heating element along the atomizing liquid is 1 to 3 times the width of the heating element in its own width direction.

[0021] Furthermore, a plurality of blind holes for gas return are provided on one side of the liquid guiding part connected to the heating element and / or on the other side of the liquid guiding part opposite to the heating element.

[0022] Furthermore, the porosity of the porous conductive ceramic body is 10% to 60%.

[0023] Furthermore, the porous conductive ceramic body is a one-piece structure.

[0024] To achieve the above objectives, the present invention also proposes an atomizer comprising a mouthpiece, an air outlet for gas and smoke to flow to the outside, and an atomizing core as described above, wherein the atomizing core is disposed axially in the atomizer at a position further away from the mouthpiece than the air outlet.

[0025] Furthermore, the heating element of the atomizing core is positioned facing the inlet end of the air outlet, or the heating element is positioned away from the inlet end of the air outlet, or the atomizing core is tilted to the side so that the heating element is positioned at a certain angle to the inlet end of the air outlet.

[0026] Furthermore, the atomizing core is coaxially arranged with the air outlet.

[0027] To achieve the above objectives, the present invention also proposes an electronic atomizing device, which includes the aforementioned atomizer.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] In the technical solution of this invention, a porous conductive ceramic body with both liquid guiding and heating functions is used as both the liquid guiding and heating body. The porous conductive ceramic body is designed with a structure comprising a heating part and a liquid guiding part. This allows the heating part to serve as the main heating area of ​​the entire porous conductive ceramic body during operation, and the liquid guiding part to serve as the main liquid guiding area. Simultaneously, by exposing the heating part protruding to the side of the liquid guiding part, and ensuring that the contact area between the heating part and the liquid guiding part is smaller than the surface area of ​​one side of the liquid guiding part, the contact area between the high-temperature part (i.e., the heating part) and the liquid guiding part in the porous conductive ceramic body is reduced. This avoids an excessively large high-temperature contact area between the heating part and the liquid guiding part, which could lead to expansion of the vapor volume after the atomized liquid is atomized into vaporous smoke (or before the atomized liquid is atomized into vaporous smoke). Excessive atomizing liquid temperature rises, generating greater pressure, which in turn creates excessive pressure around the heating element. This prevents the atomizing liquid in the guide section from flowing away from the heating element under this pressure, solving the technical problem of pulsed atomizing liquid inflow. Therefore, during the heating process of the porous conductive ceramic body, when the atomizing liquid in the heating element is heated and atomized, the atomizing liquid content in the heating element decreases, making the liquid pressure in the heating element lower than the liquid pressure in the guide section, thus creating a negative pressure. This allows the atomizing liquid to flow smoothly from the guide section into the heating element for replenishment, enabling the heating element to continuously produce sufficient smoke during the heating process. Therefore, it not only effectively reduces the risk of the atomizing core running dry due to insufficient liquid when used continuously for too long, but also effectively improves the user's inhalation experience. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 This is a three-dimensional structural diagram of the atomizing core in one embodiment of the present invention;

[0032] Figure 2 for Figure 1 A sectional view;

[0033] Figure 3 This is a schematic diagram illustrating the working principle of the atomizing core in one embodiment of the present invention;

[0034] Figure 4 This is a three-dimensional structural diagram of the atomizing core in another embodiment of the present invention;

[0035] Figure 5 for Figure 4 Side sectional view;

[0036] Figure 6 for Figure 4 Front sectional view;

[0037] Figure 7 This is a schematic diagram illustrating the working principle of the atomizing core in another embodiment of the present invention;

[0038] Figure 8 This is a three-dimensional structural diagram of the atomizing core in another embodiment of the present invention;

[0039] Figure 9 This is a cross-sectional view of the atomizing core in one embodiment of the present invention;

[0040] Figure 10 This is a cross-sectional view of the atomizing core in another embodiment of the present invention;

[0041] Figure 11 This is a cross-sectional view of the atomizing core in another embodiment of the present invention;

[0042] Figure 12 This is a front sectional view of an atomizer in one embodiment of the present invention;

[0043] Figure 13 This is a side sectional view of an atomizer in one embodiment of the present invention.

[0044] Explanation of icon numbers:

[0045] 1-Positive terminal;

[0046] 2-Negative terminal;

[0047] 3-Porous conductive ceramic body, 31-Liquid guiding part, 311-Power-off gap, 312-Blind hole, 32-Heating part;

[0048] 4-Air vent;

[0049] 5-Liquid storage cup;

[0050] 6-Atomizer coil holder;

[0051] 7- Cigarette mouthpiece;

[0052] 81 - First silver paste coating, 82 - Second silver paste coating.

[0053] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0055] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0056] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or," "and / or," or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0057] Reference Figures 1 to 3 An embodiment of the present invention provides an atomizing core, the atomizing core comprising:

[0058] A porous conductive ceramic body 3 is provided with positive and negative contacts (not shown in the figure). The porous conductive ceramic body 3 has multiple pores (not shown in the figure) distributed throughout it. The pores are used for liquid conduction and gas flow. The porous conductive ceramic body 3 includes:

[0059] Liquid guiding section 31;

[0060] The heating element 32 is integrally connected to the liquid guiding part 31. The heating element 32 is used to heat the atomized liquid that is conducted from the liquid guiding part 31 to the interior of the heating element 32. The heating element 32 protrudes from one side of the liquid guiding part 31 in a direction away from the liquid guiding part 31. The contact area between the heating element 32 and the liquid guiding part 31 is smaller than the surface area of ​​the side of the liquid guiding part 31 to which the heating element 32 is connected.

[0061] In this embodiment, the porous conductive ceramic body 3 is a conductive ceramic material sintered at high temperature, possessing a large number of interconnected pores that also permeate the material surface. Specifically, the porous conductive ceramic body 3 can be a mixture of at least one of silicon carbide, silicon oxide, alumina, and zirconium oxide with conductive powder. 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. To reduce the manufacturing cost of the porous conductive ceramic body 3, it is preferably a one-piece structure; schematically, the longitudinal section of the porous conductive ceramic body 3 is convex.

[0062] In this embodiment, the positive contact is used to connect to the positive terminal of the power supply, and the negative contact is used to connect to the negative terminal of the power supply. The atomizing core of this embodiment can be applied to an electronic atomizing device. In specific applications, both the positive and negative contacts can be set on the heating part 33. Then, the positive contact is electrically connected to the positive terminal of the power supply of the electronic atomizing device, and the negative contact is electrically connected to the negative terminal of the power supply of the electronic atomizing device, so that the heating part 32 can generate heat after the porous conductive ceramic body 3 is energized.

[0063] In the technical solution of this invention embodiment, a porous conductive ceramic body 3 with both liquid guiding and heating functions is used as both the liquid guiding and heating body. The porous conductive ceramic body 3 is designed with a structure comprising a heating part 32 and a liquid guiding part 31. During the operation of the atomizing core, the heating part 32 serves as the main heating area of ​​the entire porous conductive ceramic body 3, and the liquid guiding part 31 serves as the main liquid guiding area. Simultaneously, by exposing the heating part 32 protruding outwards on the liquid guiding side, and ensuring that the contact area between the heating part 32 and the liquid guiding part 31 is smaller than the surface area of ​​one side of the liquid guiding part 31, the contact area between the high-temperature portion (i.e., the heating part 32) and the liquid guiding part 31 in the porous conductive ceramic body 3 is reduced. This avoids an excessively large high-temperature contact area between the heating part 32 and the liquid guiding part 31, which could lead to the expansion of the vapor volume after the atomized liquid is atomized into vapor (or the atomized liquid is atomized into vapor). The excessive pressure generated by the high temperature of the atomizing liquid before the vapor rises can cause excessive pressure on the periphery of the heating element 32. This prevents the atomizing liquid in the liquid guiding section 31 from flowing away from the heating element 32 under the action of this pressure, thus solving the technical problem of pulsed inflow of atomizing liquid. Therefore, during the heating process of the porous conductive ceramic body 3, when the atomizing liquid contained in the heating element 32 is heated and atomized, the atomizing liquid content in the heating element 32 decreases, making the liquid pressure in the heating element 32 lower than the liquid pressure in the liquid guiding section 31, thus forming a negative pressure. This allows the atomizing liquid to flow smoothly from the liquid guiding section 31 into the heating element 32 for replenishment, so that the heating element 32 can continuously produce sufficient vapor during the heating process. Therefore, it not only effectively reduces the risk of the atomizing core running dry due to insufficient liquid when used for a long time, but also effectively improves the user's inhalation experience.

[0064] Further, please continue to refer to Figures 1 to 3In an exemplary embodiment of the present invention, in the vertical direction from the liquid guiding part 31 to the heating part 32, the height of the heating part 32 is less than or equal to the height of the liquid guiding part 31. Thus, under the premise that the height of the porous conductive ceramic body 3 in the vertical direction along the atomizing liquid from the liquid guiding part 31 to the heating part 32 is a certain value, by setting the height of the heating part 32 to be less than or equal to the height of the liquid guiding part 31, it is beneficial to shorten the path length of the atomizing liquid from the liquid guiding part 31 to the heating part 32. This allows the atomizing liquid to flow more quickly from the liquid guiding part 31 to the heating part 32 for replenishment during the heating process of the porous conductive ceramic body 3 being energized. Furthermore, since the liquid content in the pores of the liquid guiding part 31 is greater than that in the heating part 32 (because the volume of the liquid guiding part 31 is greater than that of the heating part 32), when the atomizing liquid in the heating part 32 decreases due to heating and atomization, the hydraulic pressure difference between the heating part 32 and the liquid guiding part 31 will be greater. This allows a stronger negative pressure to be formed on one side of the heating part 32, which in turn allows the atomizing liquid to flow more quickly from the liquid guiding part 31 to the heating part 32 for replenishment. This further helps to reduce the risk of dry burning of the atomizing core due to lack of liquid.

[0065] Furthermore, in another exemplary embodiment of the present invention, in the vertical direction from the liquid guiding section 31 to the heating section 32, the height of the heating section 32 is greater than the height of the liquid guiding section 31. Thus, given that the height of the porous conductive ceramic body 3 in the vertical direction from the liquid guiding section 31 to the heating section 32 is a constant, setting the height of the heating section 32 to be greater than the height of the liquid guiding section 31 helps to increase the heating volume of the heating section 32, allowing it to generate more smoke per unit time, thereby further improving the user's inhalation experience.

[0066] Furthermore, referring to Figure 4 , Figure 5 , Figure 7 and Figure 12Considering the application of the atomizing core in electronic atomization devices, during the heating process of the porous conductive ceramic body 3, in addition to the heating part 32 generating heat through electrical conduction, the liquid guiding part 31 also generates heat due to the passage of current. If the heat generated by the liquid guiding part 31 is excessive, the large amount of heat generated by the liquid guiding part 31 will also exert excessive pressure on the surrounding area of ​​the liquid guiding part 31 (specifically, the large amount of heat generated by the liquid guiding part 31 will cause the temperature of the atomizing liquid stored in the liquid guiding part 31 to be too high, resulting in a certain pressure, i.e., the atomizing liquid on the side with higher temperature will be affected). The pressure of the liquid is greater than that of the atomizing liquid on the side with a lower temperature. This pressure will hinder the flow of the atomizing liquid from the liquid guiding part 31 to the heating part 32, thereby reducing the speed at which the atomizing liquid flows from the liquid guiding part 31 to the heating part 32 (and also reducing the speed at which the atomizing liquid flows from the liquid storage cup 5 of the electronic atomizing device to the liquid guiding part 31). Therefore, in order to avoid the liquid guiding part 31 generating too much heat and reducing the speed at which the atomizing liquid flows from the liquid guiding part 31 to the heating part 32, in an exemplary embodiment of the present invention, at least one power-off gap 311 for blocking the current is provided on the liquid guiding part 31.

[0067] Specifically, please continue to refer to Figure 4 , Figure 5 and Figure 7At least one power-off gap 311 is provided on the liquid guiding section 31 in the vertical direction along which the atomized liquid flows from the liquid guiding section 31 to the heating section 32, and the length of the power-off gap 311 is less than or equal to the height of the liquid guiding section 31 in the vertical direction along which the atomized liquid flows from the liquid guiding section 31 to the heating section 32. This arrangement allows the liquid guiding section 31 to achieve a slight heating effect or even no heating (since the transmission of current in the liquid guiding section 31 is blocked by the power-off gap 311, the heat of the liquid guiding section 31 at this time mainly comes from the small amount of heat transferred by the heating section 32), avoiding the liquid guiding section 31 from generating too much heat and reducing the speed at which the atomized liquid flows from the liquid guiding section 31 to the heating section 32, ensuring that the atomized liquid in the heating section 32 can be replenished in time during the conductive heating process of the heating section 32, thereby helping to reduce the risk of insufficient liquid and dry burning of the porous conductive ceramic body 3. In specific implementation, the number of power-off gaps 311 can be determined by considering both the amount of atomized liquid received by the liquid guiding section 31 and the degree of heat generation. Generally speaking, the more power-off gaps 311 there are, the better the current blocking effect and the less heat generated by the liquid guiding section 31 (i.e., the better the effect of preventing the liquid guiding section 31 from heating up). The atomized liquid in the storage cup 5 can then flow more easily into the heating section 32 through the liquid guiding section 31. However, at the same time, the more power-off gaps 311 there are, the smaller the volume of the liquid guiding section 31 becomes, and the less atomized liquid it can receive. Furthermore, in specific implementation, preferably, the length of the power-off gap 311 along the axial direction of the porous conductive ceramic body 3 is equal to the height of the liquid guiding section 31 along the axial direction of the porous conductive ceramic body 3. This allows the power-off gap 311 to achieve a better current blocking effect, thereby reducing the heat generation of the liquid guiding section 31.

[0068] Furthermore, compared to traditional ceramic atomizing cores (traditional ceramic atomizing cores have relatively large heat melting, and after the heating resistor is embedded in the ceramic, the entire ceramic needs to be heated before smoke can be atomized, resulting in a slow atomization speed, and it requires high power to drive at the beginning, resulting in high power consumption), the atomizing core of this embodiment of the invention has the advantage of opening at least one power-off gap 311 on the liquid guiding part 31: during the operation of the atomizing core, the heat generated by the entire porous conductive ceramic body 3 can be more concentrated in the heating part 32 used for vaporizing the atomizing liquid, thereby effectively reducing the heat melting of the entire atomizing core. During the operation of the atomizing core, only the atomizing liquid in the heating part 32 needs to be heated in a concentrated manner to quickly generate smoke, without the need to heat and atomize the entire porous conductive ceramic body 3. This not only improves the atomization speed of the atomizing liquid, but also reduces the power consumption of the atomizing core.

[0069] Furthermore, referring to Figure 1 or Figure 4In an exemplary embodiment of the present invention, the atomizing core further includes a positive electrode pin 1 and a negative electrode pin 2. Both the positive and negative electrodes are disposed on the heating element 32. The positive electrode pin 1 is electrically connected to the positive electrode contact, and the negative electrode pin 2 is electrically connected to the negative electrode contact. In this embodiment, in specific implementation, the positive electrode pin 1 and the negative electrode pin 2 can be metal wires, which can be electrically connected to the heating element 32 by means of soldering or other methods. In this case, the connection between the positive electrode pin 1 and the heating element 32 is the positive electrode contact, and the connection between the negative electrode pin 2 and the heating element 32 is the negative electrode contact. When the atomizing core of this embodiment is applied to an electronic atomizing device, the positive electrode pin 1 can be electrically connected to the positive terminal of the power supply section of the electronic atomizing device, and the negative electrode pin 2 can be electrically connected to the negative terminal of the power supply section of the electronic atomizing device, so that the heating element 32 can generate heat after the porous conductive ceramic body 3 is energized. In this embodiment, by providing positive and negative terminals, it is easy to electrically connect the porous conductive ceramic body 3 to the power supply part of the electronic atomization device.

[0070] Furthermore, referring to Figure 9 In an exemplary embodiment of the present invention, the heating element 32 is provided with a first silver paste coating 81 and a second silver paste coating 82 (the silver paste coating is made of silver paste material and has good conductivity). The first silver paste coating 81 covers the positive electrode contact and is soldered to the positive electrode pin 1, and the second silver paste coating 82 covers the negative electrode contact and is soldered to the negative electrode pin 2. Thus, by adding the silver paste coating, on the one hand, it is convenient to electrically connect the positive and negative electrode pins to the positive and negative electrode contacts, and on the other hand, it can improve the reliability of the electrical connection between the positive and negative electrode pins and the heating element 32.

[0071] Furthermore, referring to Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 8 In an exemplary embodiment of the present invention, the positive electrode pin 1 and the negative electrode pin 2 are disposed opposite to each other on the side wall of the heating part 32 along the length direction of the heating part 32. This arrangement can avoid the problem of short circuit due to the positive electrode pin 1 and the negative electrode pin 2 being too close together, thereby ensuring that the heating part 32 can be powered on and heated normally without short circuit.

[0072] Furthermore, when the liquid-conducting part 31 is provided with a current-blocking gap 311 for interrupting current, both the positive and negative contacts can be disposed on the liquid-conducting part 31. This allows the current to mainly flow through the heating part 32 after the porous conductive ceramic body 3 is energized. The heating part 32 can serve as the main heating area of ​​the entire porous conductive ceramic body 3, and the liquid-conducting part 31 can serve as the main liquid-conducting area of ​​the entire porous conductive ceramic body 3. Specifically, refer to... Figure 11In an exemplary embodiment of the present invention, both the positive and negative contacts are disposed on the liquid guiding portion 31. A first silver paste coating 81 and a second silver paste coating 82 are disposed on the liquid guiding portion 31. The first silver paste coating 81 covers the positive contact, and the second silver paste coating 82 covers the negative contact. In this embodiment, by providing conductive coatings on the liquid guiding portion 31 to cover the positive and negative contacts, the first silver paste coating 81 can serve as the positive contact of the porous conductive ceramic body 3, and the second silver paste coating 82 can serve as the negative contact of the porous conductive ceramic body 3. Thus, in the application of the atomizing core of this embodiment to an electronic atomizing device, the reliability of the electrical connection between the power supply and the porous conductive ceramic body 3 can be improved. Optionally, both the first silver paste coating 81 and the second silver paste coating 82 are disposed on the lower end face of the liquid guiding portion 31. Thus, in some electronic atomizing device applications where the positive and negative terminals of the power supply are elastic pin-type structures, the convenience of the electrical connection between the power supply and the porous conductive ceramic body 3 can be improved.

[0073] Furthermore, in another exemplary embodiment of the present invention, when a power-off gap 311 for blocking current is provided on the liquid-conducting part 31, both the positive and negative contacts can be disposed on the liquid-conducting part 31, so that after the porous conductive ceramic body 3 is energized, the current mainly flows through the heating part 32, and the heating part 32 can serve as the main heating area of ​​the entire porous conductive ceramic body 3, while the liquid-conducting part 31 can serve as the main liquid-conducting area of ​​the entire porous conductive ceramic body 3. Specifically, refer to... Figure 10 The atomizing core also includes a positive electrode pin 1 and a negative electrode pin 2. Both the positive and negative contacts are located on the liquid-conducting part 31. The positive electrode pin 1 is electrically connected to the positive contact, and the negative electrode pin 2 is electrically connected to the negative contact. In this embodiment, the positive electrode pin 1 and the negative electrode pin 2 can be metal wires, which can be electrically connected to the liquid-conducting part 31 by means of soldering or other methods. In this case, the connection between the positive electrode pin 1 and the liquid-conducting part 31 is the positive contact, and the connection between the negative electrode pin 2 and the liquid-conducting part 31 is the negative contact. Thus, by providing positive and negative electrodes, it is convenient to electrically connect the porous conductive ceramic body 3 to the power supply part of the electronic atomizing device.

[0074] Furthermore, referring to Figure 4 , Figure 6 and Figure 7The applicant's research found that, given a fixed length of the heating element 32, if the ratio of the height of the heating element 32 in the vertical direction along the atomizing liquid from the guide liquid section 31 to the width of the heating element 32 in its own width direction is too small (specifically, the ratio is less than 1), the heating volume of the heating element 32 will be insufficient, thus reducing the amount of mist produced (i.e., the amount of smoke generated). Conversely, if the ratio of the height of the heating element 32 in the vertical direction along the atomizing liquid from the guide liquid section 31 to the width of the heating element 32 in its own width direction is too large (specifically, the ratio is greater than 3), it will extend the... The long liquid guiding path of the heating part 32 makes it easy for insufficient liquid supply to occur on the side of the heating part 32 away from the liquid guiding part 31, resulting in local dry burning due to insufficient liquid supply. Based on this discovery, in an exemplary embodiment of the present invention, preferably, the height of the heating part 32 in the vertical direction of the atomized liquid flowing from the liquid guiding part 31 to the heating part 32 is 1 to 3 times the width of the heating part 32 in its own width direction. Figuratively, assuming that the height of the heating part 32 in the vertical direction of the atomized liquid flowing from the liquid guiding part 31 to the heating part 32 is H, and the width of the heating part 32 in its own width direction is W, then H:W = 1:1 to 3:1.

[0075] Furthermore, referring to Figure 8 and Figure 12 In an exemplary embodiment of the present invention, a plurality of blind holes 312 for gas return are provided on one side of the liquid guiding part 31 connected to the heating part 32 and / or on the other side of the liquid guiding part 31 facing away from the heating part 32. In specific implementation, the number of blind holes 312 can be flexibly set as needed, for example, there can be one or more; in addition, the position of the blind holes 312 can also be flexibly set as needed, for example, the blind holes 312 can be set on the side of the liquid guiding part 31 connected to the heating part 32, or on the other side of the liquid guiding part 31 facing away from the heating part 32, or blind holes 312 can be provided on both the side of the liquid guiding part 31 connected to the heating part 32 and the other side of the liquid guiding part 31 facing away from the heating part 32.

[0076] In this embodiment, it should be noted that, in the field of electronic atomization technology, the so-called "return gas" refers to gas passing through the liquid guiding section 31 and entering the liquid storage cup 5 (the liquid storage cup 5 stores atomizing liquid; when the atomizing liquid in the liquid guiding section 31 decreases, the atomizing liquid in the liquid storage cup 5 can flow into the liquid guiding section 31 to replenish it), thereby offsetting the negative pressure in the liquid storage cup 5 (the reason for the negative pressure in the liquid storage cup 5 is that as the atomizing liquid in the liquid storage cup 5 gradually decreases, and the part of the liquid storage cup 5 without atomizing liquid is a vacuum, the pressure in the liquid storage cup 5 will gradually decrease and become less than the external atmospheric pressure, thus generating negative pressure, causing the atomizing liquid to be unable to continue flowing out of the liquid storage cup 5 or the flow rate to become slower and slower), so that the pressure in the liquid storage cup 5 is the same as the external atmospheric pressure, thereby allowing the atomizing liquid to flow smoothly from the liquid storage cup 5 into the liquid guiding section 31.

[0077] In this embodiment, compared to the liquid guiding section 31 without blind holes 312, the path of gas passing through the liquid guiding section 31 is shortened by adding blind holes 312, thus increasing the return gas speed and achieving a better return gas effect. This allows the atomizing liquid to flow more smoothly from the storage cup 5 into the liquid guiding section 31 during the conductive heating process of the heating element 32. In other words, since the liquid guiding section 31 itself is a porous structure, it can also return gas. However, compared to the liquid guiding section 31 with blind holes 312 for return gas, the path of gas passing through the liquid guiding section 31 without blind holes 312 is longer, resulting in a relatively slower return gas speed.

[0078] Furthermore, the applicant's research found that when the porosity of the porous conductive ceramic body 3 is less than 10%, the liquid conduction speed of the porous conductive ceramic body 3 will be slow, and the problem of dry burning due to lack of liquid is likely to occur. When the porosity of the porous conductive ceramic body 3 is greater than 60%, the porous conductive ceramic body 3 is prone to leakage. Based on this discovery, in an exemplary embodiment of the present invention, preferably, the porosity of the porous conductive ceramic body 3 is 10% to 60%, so as to effectively avoid the problem of dry burning due to lack of liquid or leakage of liquid during the operation of the porous conductive ceramic body 3.

[0079] Correspondingly, refer to Figures 1 to 13 The present invention also provides an atomizer, which includes a mouthpiece 7, an air outlet 4 for gas and smoke to flow to the outside, and an atomizing core as described in any of the above embodiments. The atomizing core is disposed axially in the atomizer at a position further away from the mouthpiece 7 than the air outlet 4.

[0080] In this embodiment, the heating element 32 of the atomizing core can be positioned facing the inlet end of the air outlet 4 (illustratively, the inlet end of the air outlet 4 is the lower end of the air outlet 4), or the heating element 32 can be positioned away from the inlet end of the air outlet 4. Alternatively, the atomizing core can be tilted so that the heating element 32 is at a certain angle to the inlet end of the air outlet 4 (for example, the porous conductive ceramic body 3 is tilted so that the liquid guiding part 31 forms a certain angle with the axis of the air outlet 4 and the heating element 32 is positioned below the inlet end of the air outlet 4). As long as the smoke generated by the heating element 32 during the operation of the atomizing core can be smoothly carried away by the airflow in the airway, this embodiment does not impose any specific limitations on this.

[0081] In this embodiment, thanks to the improvements to the atomizing core, the atomizer of this embodiment has the same technical effect as the atomizing core described above, which will not be repeated here.

[0082] Furthermore, referring to Figure 12 and Figure 13 In an exemplary embodiment of the present invention, the atomizing core and the air outlet 4 are coaxially arranged. More specifically, the atomizer also includes a liquid reservoir 5 and an atomizing core support 6. The liquid reservoir 5 is provided with at least one liquid outlet hole (not shown in the figure), and the atomizing core support 6 is provided with at least one liquid inlet hole (not shown in the figure). The atomizing core support 6 is sleeved on the outside of the atomizing core, and the liquid outlet hole and the liquid inlet hole are connected. The inner wall of the atomizing core support 6 is attached to the outer wall of the liquid guiding part 31, and the liquid inlet hole is provided corresponding to the liquid guiding part 31. In this way, by coaxially arranging the atomizing core and the air outlet 4 (specifically, the central axis of the atomizing core coincides with the axis of the air outlet 4), compared with tilting the atomizing core, it is beneficial to improve the convenience of installation of the porous conductive ceramic body 3.

[0083] Correspondingly, embodiments of the present invention also provide an electronic atomizing device, which includes the atomizer in any of the above embodiments.

[0084] In this embodiment, specifically, the electronic atomizing device can be an electronic cigarette (at this time, the atomizing liquid mentioned in the above embodiments of the present invention can be a medium such as e-liquid). Thanks to the improvement of the atomizing core, the electronic atomizing device of this embodiment has the same technical effect as the atomizing core, which will not be repeated here.

[0085] It should be noted that other aspects of the atomizing core, atomizer, and electronic atomizing device disclosed in this invention can be found in the prior art, and will not be repeated here.

[0086] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural transformations made using the contents of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of patent protection of the present invention.

Claims

1. An atomizing core, characterized in that, include: A porous conductive ceramic body is provided with positive and negative contacts. The porous conductive ceramic body has multiple pores distributed throughout it, which are used for liquid conduction and gas flow. The porous conductive ceramic body comprises: Liquid guiding section; A heating element is integrally connected to the liquid guiding part. The heating element is used to heat and atomize the atomized liquid that is conducted from the liquid guiding part to the interior of the heating element. The heating element protrudes from one side of the liquid guiding part in a direction away from the liquid guiding part. The contact area between the heating element and the liquid guiding part is smaller than the surface area of ​​the side of the liquid guiding part to which the heating element is connected. The height of the heating element in the vertical direction of the atomized liquid flowing from the liquid guiding part to the heating element is 1 to 3 times the width of the heating element in its own width direction. At least one power-off gap is formed on the liquid guiding part in the vertical direction of the atomized liquid flowing from the liquid guiding part to the heating element, and the length of the power-off gap is less than or equal to the height of the liquid guiding part in the vertical direction of the atomized liquid flowing from the liquid guiding part to the heating element.

2. The atomizing core as described in claim 1, characterized in that, The atomizing core also includes a positive electrode pin and a negative electrode pin. The positive electrode contact and the negative electrode contact are both disposed on the heating element. The positive electrode pin is electrically connected to the positive electrode contact, and the negative electrode pin is electrically connected to the negative electrode contact.

3. The atomizing core as described in claim 2, characterized in that, The heating element is provided with a first silver paste coating and a second silver paste coating. The first silver paste coating covers the positive electrode contact and is soldered to the positive electrode lead. The second silver paste coating covers the negative electrode contact and is soldered to the negative electrode lead.

4. The atomizing core as described in claim 2, characterized in that, Along the length of the heating element, the positive electrode lead and the negative electrode lead are disposed opposite to each other on the side wall of the heating element.

5. The atomizing core as described in claim 1, characterized in that, Both the positive electrode contact and the negative electrode contact are disposed on the liquid guiding part. The liquid guiding part is provided with a first silver paste coating and a second silver paste coating. The first silver paste coating covers the positive electrode contact, and the second silver paste coating covers the negative electrode contact.

6. The atomizing core as described in claim 1, characterized in that, The atomizing core also includes a positive electrode lead and a negative electrode lead. The positive electrode contact and the negative electrode contact are both disposed on the liquid guiding part. The positive electrode lead is electrically connected to the positive electrode contact, and the negative electrode lead is electrically connected to the negative electrode contact.

7. The atomizing core as described in claim 1, characterized in that, In the vertical direction from the liquid guide section to the heating section, the height of the heating section is less than or equal to the height of the liquid guide section.

8. The atomizing core as described in claim 1, characterized in that, In the vertical direction from the liquid guide section to the heating section, the height of the heating section is greater than the height of the liquid guide section.

9. The atomizing core as described in claim 1, characterized in that, A plurality of blind holes for gas return are provided on one side of the liquid guiding part connected to the heating element and / or on the other side of the liquid guiding part opposite to the heating element.

10. The atomizing core as described in claim 1, characterized in that, The porosity of the porous conductive ceramic body is 10% to 60%; And / or, the porous conductive ceramic body is a one-piece structure.

11. An atomizer, characterized in that, The atomizer includes a mouthpiece, an outlet for gas and smoke to flow to the outside, and an atomizing core as described in any one of claims 1 to 10, wherein the atomizing core is disposed axially in the atomizer at a position further away from the mouthpiece than the outlet.

12. The atomizer as described in claim 11, characterized in that, The heating element of the atomizing core is positioned facing the inlet end of the air outlet, or the heating element is positioned away from the inlet end of the air outlet, or the atomizing core is tilted to the side so that the heating element is positioned at a certain angle to the inlet end of the air outlet.

13. The atomizer as described in claim 12, characterized in that, The atomizing core is coaxially arranged with the air outlet.

14. An electronic atomizing device, characterized in that, The electronic atomizing device includes an atomizer as described in any one of claims 11 to 13.

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