EP4691294A1

EP4691294A1 - Atomizer and electronic atomization apparatus

Info

Publication number: EP4691294A1
Application number: EP24792083.8A
Authority: EP
Inventors: Rui Hong; Ruilong HU; Zhongli XU; Yonghai LI
Original assignee: Shenzhen FirstUnion Technology Co Ltd
Current assignee: Shenzhen FirstUnion Technology Co Ltd
Priority date: 2023-04-19
Filing date: 2024-04-18
Publication date: 2026-02-11
Also published as: WO2024217498A1; CN118805979A

Abstract

This application provides an atomizer and an electronic atomization apparatus. The atomizer includes a housing assembly. The housing assembly includes a liquid storage cavity; and an atomization core in fluid communication with the liquid storage cavity. The atomization core is configured to heat and atomize a liquid substrate in the liquid storage cavity, to generate an aerosol; and the atomization core includes a susceptor and a holder. The susceptor is combined on at least a part of the holder, and the susceptor is configured to generate heat when penetrated by a variable magnetic field. The holder is configured to not generate heat or generate heat whose amount is less than an amount of heat generated by the susceptor by one or more orders of magnitude when penetrated by the variable magnetic field. According to the foregoing atomizer and electronic atomization apparatus, the atomization core is formed by the susceptor and the holder, the susceptor is held on the holder, and the holder does not generate heat or generate heat whose amount is less than the amount of heat generated by the susceptor by one or more orders of magnitude when being penetrated by the variable magnetic field. In this way, a volume of the susceptor is relatively small, so that power consumption of the atomizer is reduced, heating efficiency of the atomizer is improved, and inhaling experience of a user is improved.

Description

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application No. 202310462317.6, filed with the China National Intellectual Property Administration on April 19, 2023 and entitled "ATOMIZER AND ELECTRONIC ATOMIZATION APPARATUS", which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

This application relates to the field of electronic atomization technologies, and in particular, to an atomizer and an electronic atomization apparatus.

BACKGROUND

An electronic atomization apparatus is an electronic product that is configured to atomize a liquid substrate for a user to inhale, and typically includes two parts of an atomizer and a power supply assembly. The liquid substrate is stored in the atomizer, and a heating element configured to atomize the liquid substrate is arranged in the atomizer. The power supply assembly includes a battery and a circuit board.
In an existing electronic atomization apparatus, a heating element is configured to generate heat when being penetrated by a variable magnetic field The electronic atomization apparatus has problems of low electromagnetic atomization efficiency and relatively poor inhaling experience of a user.

SUMMARY

This application provides an atomizer and an electronic atomization apparatus, to resolve problems of low electromagnetic atomization efficiency and relatively poor inhaling experience of a user that exist in an existing electronic atomization apparatus.
An aspect of this application provides an atomizer, including a housing assembly, where the housing assembly includes:

a liquid storage cavity, configured to store a liquid substrate; and
an atomization core in fluid communication with the liquid storage cavity, where the atomization core is configured to heat and atomize the liquid substrate in the liquid storage cavity, to generate an aerosol.

The atomization core includes a susceptor and a holder, where the susceptor is combined on at least a part of the holder, and the susceptor is configured to be capable of being penetrated by a variable magnetic field and generate heat; and
The holder is configured to not generate heat or generate heat whose amount is less than an amount of heat generated by the susceptor when being penetrated by the variable magnetic field.
Another aspect of this application further provides an electronic atomization apparatus, including the atomizer and a power supply assembly detachably connected to the atomizer, where the power supply assembly includes:

a receiving portion, configured to receive at least a part of the housing assembly; and
a magnetic field generator, configured to generate a variable magnetic field under an alternating current, where the magnetic field generator is arranged close to the receiving portion.

According to the foregoing atomizer and electronic atomization apparatus, the atomization core is formed by the susceptor and the holder, the susceptor is held on the holder, and the holder does not generate heat or generates heat whose amount is less than the amount of heat generated by the susceptor when being penetrated by the variable magnetic field. In this way, a volume of the susceptor is relatively small, so that power consumption of the atomizer is reduced, heating efficiency of the atomizer is improved, and inhaling experience of a user is improved.

BRIEF DESCRIPTION OF THE DRAWINGS

One or more embodiments are exemplarily described with reference to the corresponding figures in the accompanying drawings, and the descriptions do not constitute a define to the embodiments. Elements in the accompanying drawings that have same reference numerals are represented as similar components, and unless otherwise particularly stated, the figures in the accompanying drawings are not drawn to scale.

FIG. 1 is a schematic diagram of an electronic atomization apparatus according to an implementation of this application;
FIG. 2 is a schematic exploded view of an electronic atomization apparatus according to an implementation of this application;
FIG. 3 is a schematic exploded view of an atomizer according to an implementation of this application;
FIG. 4 is a schematic cross-sectional view of an atomizer according to an implementation of this application;
FIG. 5 is a schematic diagram of an upper support according to an implementation of this application;
FIG. 6 is a schematic exploded view of an atomization core according to an implementation of this application;
FIG. 7 is a schematic diagram of a bottom base according to an implementation of this application.
FIG. 8 is a schematic cross-sectional view of a bottom base according to an implementation of this application.
FIG. 9 is a schematic cross-sectional view of a power supply assembly according to an implementation of this application;
FIG. 10 is a schematic diagram of a lower housing according to an implementation of this application;
FIG. 11 is a schematic diagram of a lower support according to an implementation of this application;
FIG. 12 is a schematic diagram of a base according to an implementation of this application;
FIG. 13 is a schematic diagram of a magnetic field generator according to an implementation of this application; and
FIG. 14 is a schematic cross-sectional view of a magnetic field generator according to an implementation of this application.

DETAILED DESCRIPTION

For ease of understanding of this application, this application is described in further detail below with reference to the accompanying drawings and specific implementations. It should be noted that, when an element is expressed as "being fixed to" another element, the element may be directly on the another element, or one or more intermediate elements may exist between the element and the another element. When an element is expressed as "being connected to" another element, the element may be directly connected to the another element, or one or more intermediate elements may exist between the element and the another element. The terms "upper", "lower", "left", "right", "inner", "outer", and similar expressions used in this specification are merely used for an illustrative purpose.
Unless otherwise defined, meanings of all technical and scientific terms used in this specification are the same as that typically understood by a person skilled in the technical field to which this application belongs. The terms used in this specification of this application are merely intended to describe objectives of the specific implementations, and are not intended to limit this application. The term "and/or" used in this specification includes any or all combinations of one or more related listed items.
As shown in FIG. 1 and FIG. 2, an electronic atomization apparatus 100 includes an atomizer 10 and a power supply assembly 20.
The atomizer 10 is detachably or removably connected to the power supply assembly 20, including but not limited to a buckle connection, a magnetic connection, and a screw connection.
In a preferred implementation, an outer surface of the atomizer 10 is provided with a protrusion, an inner surface of the power supply assembly 20 is provided with a groove, and the buckle connection between the atomizer 10 and the power supply assembly 20 is implemented through cooperation between the protrusion and the groove.
As shown in FIG. 3 to FIG. 8, the atomizer 10 includes an upper housing 11, a seal member 12, an upper support 13, an atomization core 14, a seal member 15, and a bottom base 16.
The upper housing 11 includes a suction nozzle end and an open end. The suction nozzle end is provided with an air outlet, and an atomized aerosol can be used or inhaled by a user through the air outlet. The upper housing 11 further has an integrally formed transmission tube 11a, an inner surface of the transmission tube 11a defines a part of an airflow channel, an upper end of the transmission tube 11a is in communication with the air outlet, and a lower end of the transmission tube 11a is connected to the upper support 13. In another example, that the transmission tube 11a is in a form of a separate hollow tube is alternatively feasible.
A liquid storage cavity A is defined and formed by an inner surface of the upper housing 11 and an inner surface of the bottom base 16 together, and the liquid storage cavity A is configured to store a liquid substrate that can generate an aerosol. It can be learned from the figure that a part of the liquid storage cavity A extends to a second connection portion 162 of the bottom base 16 and surrounds the atomization core 14.
The liquid substrate preferably includes a tobacco-containing material, and the tobacco-containing material includes a volatile tobacco aroma compound that is released from the liquid substrate when the liquid substrate is heated. Alternatively, or in addition, the liquid substrate may include a non-tobacco material. The liquid substrate may include water, ethanol or another solvent, a plant extract, a nicotine solution, and a natural or artificial flavoring agent. Preferably, the liquid substrate further includes an aerosol-forming agent. Examples of a suitable aerosol-forming agent are glycerol and propylene glycol.
The seal member 12 is arranged between the transmission tube 11a and the upper support 13 and between the bottom base 16 and the upper housing 11, to seal a gap between the transmission tube 11a and the upper support 13 and a gap between the bottom base 16 and the upper housing 11. In another example, the seal member 12 may include a plurality of split seal members. For example, one seal member is arranged between the transmission tube 11a and the upper support 13, and another seal member is arranged between the bottom base 16 and the upper housing 11. In another example, that the seal member 12 and the bottom base 16 (or the upper housing 11) are integrally formed is alternatively feasible, for example, the seal member 12 and the bottom base 16 are integrally formed through two-color injection. In another example, that the seal member 12 is not arranged is alternatively feasible.
In a further implementation, an air pressure balance channel may be provided in the seal member 12, and/or between the seal member 12 and the transmission tube 11a, and/or between the seal member 12 and the upper housing 11, and/or between the transmission tube 11a and the upper support 13, and/or between the bottom base 16 and the upper housing 11, to supplement the liquid storage cavity A with air, so as to balance air pressure inside and outside the liquid storage cavity A. This facilitates transfer of the liquid substrate.
The upper support 13 is approximately in a tubular shape. An upper end of the upper support 13 extends toward a first connection portion 161 and is connected to the transmission tube 11a. A lower end of the upper support 13 is accommodated in the second connection portion 162 of the bottom base 16, that is, arranged close to a bottom end of the atomizer 10. A hollow part inside the upper support 13 defines a part of an airflow channel. An inner diameter or an outer diameter of a middle part of the upper support 13 is less than an inner diameter or an outer diameter of another part.
In a further implementation, an outer surface of the upper support 13 close to the upper end has a positioning portion 13b extending radially outward, and the first connection portion 161 of the bottom base 16 has a groove 161c. During assembly, the positioning portion 13b needs to be aligned with the groove 161c, so that the positioning portion 13b is at least partially engaged in the groove 161c, to fix or hold the upper end of the upper support 13.
In a further implementation, a support portion may be further arranged in the second connection portion 162 of the bottom base 16, and an end portion of the lower end of the upper support 13 abuts against the support portion.
In a further implementation, an outer surface of the upper support 13 close to the lower end is provided with an accommodating groove 13c, the lower end of the upper support 13 has a notch groove 13d, the seal member 15 may be assembled to the accommodating groove 13c through the notch groove 13d, and after being assembled, the seal member 15 is at least partially accommodated in the accommodating groove 13c. The seal member 15 is configured to seal a gap between the upper support 13 and the second connection portion 162.
In another example, that the upper support 13 and the transmission tube 11a are integrally formed is alternatively feasible.
The atomization core 14 is accommodated in the upper support 13 and is arranged close to the lower end of the upper support 13. After being assembled, the atomization core 14 is completely located inside the second connection portion 162 of the bottom base 16. The atomization core 14 and the second connection portion 162 are coaxially arranged. A side wall of the upper support 13 is provided with a liquid passing hole 13a, and the liquid substrate stored in the liquid storage cavity A is transferred to the atomization core 14 through the liquid passing hole 13a.
The atomization core 14 includes a liquid transfer unit 141, a susceptor 142, and a holder 143.
The liquid transfer unit 141 absorbs the liquid substrate passing through the liquid passing hole 13a and transfers the absorbed liquid substrate to the susceptor 142. The liquid transfer unit 141 may surround the susceptor 142 to form an aerosol escape channel therein.
The liquid transfer unit 141 has a liquid holding capability, and may have any suitable capillarity and void degree, so as to be used with different physical properties of the liquid substrate, for example, density, viscosity, surface tension, and a vapor pressure.
An example of a suitable material may be a porcelain or graphitic material in a form of a fiber or sintered powder, or a porous metal, for example, a porous ceramic, a porous glass, a ceramic fiber, or a metal fiber.
An example of a suitable material may be a natural or artificial fiber material, for example, a natural cotton fiber, a glass fiber, a sponge, or non-wovens. For example, the liquid transfer unit 141 may be a fiber-like material made of a textile fiber or an extruded fiber, for example, acetate cellulose, a polyester fiber, bound polyolefin, a polyethylene fiber, a polypropylene fiber, or a nylon fiber.
In an example, a material of the liquid transfer unit 141 includes high density polyethylene (HDPE) or polyethylene terephthalate (PET).
In an example, the liquid transfer unit 141 includes a plurality of layers of fiber pads. For example, the liquid transfer unit 141 is formed by stacking or winding at least two layers of fiber pads. The fiber pads include fiber bundles that basically extend in a direction, and extension directions of fiber bundles on adjacent fiber pads are different.
In an example, the liquid transfer unit 141 uses a porous ceramic, and a material of the porous ceramic includes at least one of the following: aluminum oxide, zirconia, kaolin, diatomite, and montmorillonite. A porosity of the porous ceramic may be adjusted within a range of 10% to 90%, and an average pore size of the porous ceramic may be adjusted within a range of 10 µm to 150 µm. In some implementations, the adjustment may be performed, for example, through selection of an adding amount of a pore creating material and selection of a particle size of the pore creating material.
The liquid transfer unit 141 may be in a bar shape, a tube shape, a rod shape, or the like, or may be in a flat plate shape, or a concave block shape having a cavity on a surface, or an arch shape having an arch structure, or the like.
In an example, the liquid transfer unit 141 is in a hollow cylindrical shape or tube shape. An inner side wall of the hollow cylindrical liquid transfer unit 141 defines or forms an atomization surface of the atomization core 14, an outer side wall defines or forms a liquid absorbing surface for absorbing the liquid substrate, and a hollow part defines a part of an airflow channel. The atomized aerosol and air may flow to the air outlet of the electronic atomization apparatus 100 together.
The susceptor 142 is configured to be inductively coupled to a magnetic field generator 26, and generate heat when being penetrated by a variable magnetic field, to heat the liquid substrate, so as to generate an aerosol for inhaling.
The susceptor 142 may be made of at least one of the following materials: aluminum, iron, nickel, copper, bronze, cobalt, common carbon steel, stainless steel, ferritic stainless steel, martensitic stainless steel, or austenitic stainless steel.
The susceptor 142 is in a hollow cylindrical shape or tube shape. An outer diameter of the susceptor 142 ranges from 1 mm to 5 mm; a wall thickness ranges from 0.1 mm to 0.5 mm; and a height (an axial length) ranges from 1 mm to 5 mm, preferably, from 1 mm to 4 mm; preferably, from 1 mm to 3 mm; and preferably, from 2 mm to 3 mm. The susceptor having the foregoing wall thickness and axial length is advantageous for reducing a heat-generating mass of the susceptor and increasing a temperature increase rate of the atomization core.
The susceptor 142 has a plurality of through holes 142a provided at intervals. A pore size of the through hole 142a ranges from 0.1 mm to 0.5 mm. A shape of the through hole 142a may be a circle, an ellipse, a triangle, a rhombus, or another regular or irregular shape. The aerosol may escape from the atomization surface into the airflow channel through the through hole 142a.
The holder 143 is made of a non-ferromagnetic material. When the non-ferromagnetic material is penetrated by the variable magnetic field, the non-ferromagnetic material does not generate heat or generates heat whose amount is far less than an amount of heat generated by the susceptor 142. For example, the amount of heat generated by the holder 143 is less than the amount of heat generated by the susceptor 142 by one or more orders of magnitude. The non-ferromagnetic material includes, but is not limited to, austenitic stainless steel, aluminum, copper, gold, silver, lithium, and the like.
The holder 143 is in a hollow cylindrical shape or tube shape. The holder 143 has a plurality of through holes 143a provided at intervals, and a pore size and a shape of the through hole 143a may be the same as those of the through hole 142a, or may be different from those of the through hole 142a.
The susceptor 142 is combined on at least a part of the holder 143. The susceptor 142 may be combined on the holder 143 in a manner such as assembly, printing, spraying, electroplating, or depositing. For example, the susceptor 142 includes a metal heat generating layer deposited on at least a partial surface of the holder 143. The susceptor 142 may be combined on the partial surface or an entire surface of the holder 143. The susceptor 142 may be combined on a surface region adjacent to two end portions of the holder 143, so as to expose a middle region.
In an example, the holder 143 has a first part and a second part connected to the first part, and the first part of the holder 143 is closer to the bottom end of the atomizer 10 than the second part of the holder 143. An axial length of the first part is basically the same as an axial length of the second part. For example, a difference (an absolute value) between the axial length of the first part and the axial length of the second part ranges from 0 mm to 0.5 mm, and it may be considered that the two axial lengths are basically the same. The axial length of the first part may alternatively be different from the axial length of the second part. The susceptor 142 is sleeved on the first part. In a further implementation, an outer diameter of the first part is less than an outer diameter of the second part, or a radial thickness of the first part is less than a radial thickness of the second part. In this way, after the susceptor 142 is sleeved on the first part, an outer surface of the susceptor 142 may be basically flush with an outer surface of the second part. When the susceptor 142 is sleeved on the first part, the through holes 142a of the susceptor 142 are aligned with the through holes 143a of the first part (a quantity of through holes 142a and a quantity of through holes 143a are preferably the same, and the through holes 142a are aligned with the through holes 143a one by one). In this way, the aerosol may escape from the atomization surface to the airflow channel through the through holes 142a and the through holes 143a. The second part of the holder 143 is also provided with the through hole 143a, and the aerosol can escape from the atomization surface to the airflow channel through the through hole 143a.
An axial length of the susceptor 142 is less than an axial length of the holder 143. After being assembled, a first axial distance between an upper end of the susceptor 142 and the lower end of the upper support 13 is basically the same as a second axial distance between the liquid passing hole 13a (a central position) and the lower end of the upper support 13. It should be noted that a difference between the first axial distance and the second axial distance ranges from 0 mm to 0.8 mm, and it may be considered that the first axial distance and the second axial distance are basically the same.
Because a volume and a thermal mass of the susceptor 142 are relatively small, when the susceptor 142 is penetrated by the variable magnetic field and generates heat, power consumption of the electronic atomization apparatus 100 can be reduced, a high-temperature region is more concentrated, and an atomization burst force of the liquid substrate is faster, thereby improving heating efficiency of the atomizer. Specifically, a temperature of a region in which the first part of the holder 143 is located is obviously higher than a temperature of a region in which the second part of the holder 143 is located because the susceptor 142 generates heat when being penetrated by the variable magnetic field. Although the second part of the holder 143 cannot be penetrated by the variable magnetic field and generate heat, the second part of the holder 143 can play a role of heat conduction and heat balancing. This can effectively improve a total particulate matter (Total Particulate Matter, TPM) of the electronic atomization apparatus 100 without affecting the atomization burst force in the high-temperature region, reduce a temperature of the aerosol that escapes into the airflow channel, and improve inhaling experience of a user. In an example, the holder 143 may be made of a material having a high thermal conductivity, for example, having a thermal conductivity approximately ranging from 1 W/m.k to 200 W/m.k. Alternatively, in some other implementations, the holder 143 may be made of a material having a higher thermal conductivity, for example, having a thermal conductivity of at least 40 W/m.k, preferably at least 60 W/m.k, 80 W/m.k, 100 W/m.k, or the like. Alternatively, in some implementations, a thermal conductivity of the holder 143 is greater than 200 W/m.k or higher.
After the susceptor 142 is sleeved on the holder 143, the susceptor 142 and the holder 143 may be arranged on an inner surface of the liquid transfer unit 141 together, and are both in contact with the inner surface of the liquid transfer unit 141. Alternatively, the susceptor 142 and the holder 143 are embedded in the liquid transfer unit 141.
In an example, the susceptor 142 and the holder 143 are embedded in the liquid transfer unit 141 together, and are co-fired with the liquid transfer unit 141 to form the atomization core 14. In this way, the liquid substrate does not need to be atomized when being conducted to and in contact with a surface of the susceptor 142, and starts to be atomized when being heated near the susceptor 142. Heat conduction contact between the susceptor 142 and the liquid transfer unit 142 does not cause dry burning, and a large amount of liquid substrate is not in direct contact with the susceptor 142 during atomization, which can avoid metal contamination generated by the susceptor 142.
It should be noted that, in another example, that the susceptor 142 and the holder 143 are integrally formed is alternatively feasible.
The bottom base 16 and the upper housing 11 form a housing assembly of the atomizer 10. The bottom base 16 includes the first connection portion 161 and the second connection portion 162 that are integrally formed. In another example, that the first connection portion 161 and the second connection portion 162 are separately formed may alternatively be feasible.
The first connection portion 161 is accommodated in the upper housing 11, and a cross section of the first connection portion 161 is approximately in an elliptic shape. An area of an upper end opening of the first connection portion 161 is greater than an area of a lower end opening of the first connection portion 161, and the lower end opening is close to the second connection portion 162 or defines an upper end opening of the second connection portion 162. In the first connection portion 161, the upper end opening and the lower end opening are connected through at least one inclined surface 161d, so that the first connection portion is in a funnel shape. Therefore, when there is a relatively small amount of liquid substrate in the liquid storage cavity, the liquid substrate can flow to the second connection portion 162 instead of being accumulated in the first connection portion 161, thereby improving utilization of the liquid substrate.
In a preferred implementation, an outer surface of the first connection portion 161 is provided with a protrusion (not shown), the inner surface of the upper housing 11 is provided with a groove (not shown), and a buckle connection between the first connection portion 161 and the upper housing 11 is implemented through cooperation between the protrusion and the groove.
In a preferred implementation, a lower end of the first connection portion 161 has a support portion 161a extending radially outward, to support an end portion of the open end of the upper housing 11. An outer surface of the first connection portion 161 close to the upper end further has a step, and a part of the seal member 12 is held on the step.
The second connection portion 162 is exposed outside the upper housing 11. In this way, the upper housing 11 forms a first part of the housing assembly of the atomizer 10, and the second connection portion 162 forms a second part of the housing assembly of the atomizer 10.
The second connection portion 162 is configured in a sleeve shape, and a radial size of the second connection portion 162 is less than or equal to 9 mm. The radial size of the second connection portion 162 is less than a radial size of the first connection portion 161. For example, a dimension of a cross section of the second connection portion 162 in a width direction is less than a dimension of the first connection portion 161 in a width direction, or a dimension of a cross section of the second connection portion 162 in a length direction is less than a dimension of the first connection portion 161 in a length direction, or an outer diameter of a cross section of the second connection portion 162 is less than an outer diameter of the first connection portion 161, or a cross sectional area of the first connection portion 161 is greater than a cross sectional area of the second connection portion 162, and a length dimension of the second connection portion 162 extending in a longitudinal direction is greater than a length dimension of the first connection portion 161.
In a preferred implementation, as shown in FIG. 7, a cross section of the second connection portion 162 is elliptic, and a radial size of the second connection portion 162 is a size of a major axis or a minor axis of the ellipse. A difference between the major axis and the minor axis of the second connection portion 162 ranges from 0.5 mm to 2 mm (preferably, from 0.5 mm to 1.5 mm; and further preferably, from 0.5 mm to 1 mm). Specifically, a length of the major axis d1 of the ellipse ranges from 8 mm to 9 mm (preferably, from 8 mm to 8.8 mm; further preferably, from 8 mm to 8.6 mm; further preferably, from 8.2 mm to 8.6 mm; and further preferably, from 8.4 mm to 8.6 mm). A length of the minor axis d2 of the ellipse ranges from 6 mm to 8 mm (preferably, from 7 mm to 8 mm; further preferably, from 7.2 mm to 8 mm; further preferably, from 7.4 mm to 8 mm; further preferably, from 7.6 mm to 8 mm; and further preferably, from 7.6 mm to 7.8 mm). In a specific embodiment, the length of the major axis d1 is 8.5 mm, and the length of the minor axis d2 is 7.7 mm.
In another example, the cross section of the second connection portion 162 may alternatively be circular. The radial size of the second connection portion 162 is a diameter of the circle.
An air inlet 162a is provided at a bottom end of the second connection portion 162, and a wall in which the air inlet 162a is formed protrudes from the bottom end of the second connection portion 162, to prevent the liquid substrate collected by a collection cavity 162b from directly flowing to the power supply assembly 20 through the air inlet 162a. External air flows into through the air inlet 162a, sequentially passes through the atomization core 14, the upper support 13, and the transmission tube 11a, and then flows out from the air outlet of the upper housing 11.
As shown in FIG. 9 to FIG. 14, the power supply assembly 20 includes a lower housing 21, a lower support 22, a cell 23, a circuit 24, a base 25, a magnetic field generator 26, a shielding member 27, and a sensor 28.
The lower housing 21 has a cylindrical structure with two opening ends. The lower housing 21 and the upper housing 11 define a housing of the electronic atomization apparatus 100.
An outer surface of the lower housing 21 is provided with an airflow entrance 21a, and external air may flow into the lower housing 21 through the airflow entrance 21a. A part of outer surfaces of front and rear sides of the lower housing 21 protrudes to form a protruding portion 21b (or a part of inner surfaces of front and rear sides of the lower housing 21 is recessed, to form a protruding portion 21b on an outer surface of the lower housing 21). A size of a part of the electronic atomization apparatus 100 in a thickness direction can be increased through the protruding portion 21b, so that the magnetic field generator 26 having a relatively large size, for example, an induction coil, may be accommodated.
The lower support 22 includes an accommodating portion 221 and a mounting portion 222. The accommodating portion 221 and the mounting portion 222 are separated through a partition 223.
The lower support 22 is accommodated in the lower housing 21. A dimension of the lower support 22 in a length direction is less than a dimension of the lower housing 21 in a length direction. A receiving portion B is defined between an upper end of the lower support 22 and an upper end of the lower housing 21 or between the lower support 22 and an inner surface of the lower housing 21. A lower end of the lower support 22 abuts against an end portion of a lower end of the lower housing 21. After assembly, a part of the upper housing 11 is received in the receiving portion B.
An outer surface of the accommodating portion 221 has a suspension arm 221a, and the suspension arm 221a is in a buckle connection with a groove on the inner surface of the lower housing 21. An inner surface of the accommodating portion 221 has a step 221b, a main body portion 25a of the base 25 is accommodated in the accommodating portion 221, an extending portion 25b of the base 25 abuts against the step 221b, and a plurality of extending portions 25c of the base 25 abut against the partition 223.
Components may be mounted in front of and behind the mounting portion 222. In this example, the cell 23 is mounted in front of the mounting portion 222, and the circuit 24 is mounted behind the mounting portion 222, that is, the cell 23 and the circuit 24 are sequentially arranged in a thickness direction of the electronic atomization apparatus 100. An accommodating cavity 222a and an accommodating cavity 222b are further provided in the mounting portion 222. The accommodating cavity 222a is configured to accommodate the sensor 28, and the accommodating cavity 222b is configured to accommodate a motor (not shown). The motor generates a prompt signal to prompt a user. Specific prompt information is not limited herein.
The partition 223 has a groove 223a. The groove 223a is coaxial with a receiving portion C. An airflow entrance 223b is provided in the groove 223a. Air may flow into the groove 223a through the airflow entrance 223b, and then flow into the atomizer 10 through the air inlet 162a of the bottom base 16. A sensing channel 223c is further provided in the groove 223a, and the sensing channel 223c is in communication with the accommodating cavity 222a.
The cell 23 provides electric power used for operating the electronic atomization apparatus 100. The cell 23 may be a re-chargeable cell or a disposable cell.
The circuit 24 may control an overall operation of the electronic atomization apparatus 100. The circuit 24 not only controls operations of the cell 23 and the magnetic field generator 26, but also controls operations of other elements in the electronic atomization apparatus 100. The circuit 24 includes at least one processor. The processor may include a logic gate array, or may include a combination of a general-purpose microprocessor and a memory that stores a program executable in the microprocessor. In addition, a person skilled in the art should understand that the circuit 24 may include hardware of another type.
The base 25 includes the main body portion 25a, and a hollow part inside the main body portion defines or forms at least a part of the receiving portion C. An upper end of the main body portion 25a has the extending portion 25b, and a lower end of the main body portion 25a has a plurality of extending portion s 25c. After assembly, the second connection portion 162 of the bottom base 16 is at least partially received in the receiving portion C. A radial size of the receiving portion C ranges from 7 mm to 20 mm.
In a preferred implementation, a cross section of the main body portion 25a is in an elliptic shape, that is, the receiving portion C is in an elliptic shape, and the radial side of the receiving portion C is a size of a major axis or a minor axis of the ellipse. A difference between the major axis and the minor axis of the receiving portion C ranges from 0.5 mm to 2 mm (preferably, from 0.5 mm to 1.5 mm; and further preferably, from 0.5 mm to 1 mm). The receiving portion C is in an elliptic shape. This helps the electronic atomization apparatus 100 have a flat shape as a whole, thereby improving beautiful appearance of the electronic atomization apparatus 100. Specifically, a length of the major axis d11 of the ellipse ranges from 7 mm to 10 mm (preferably, from 7 mm to 9 mm; further preferably, from 7.5 mm to 9 mm; further preferably, from 8 mm to 9 mm; and further preferably, from 8.5 mm to 9 mm). A length of the minor axis d12 of the ellipse ranges from 7 mm to 9 mm (preferably, from 7 mm to 8.5 mm; further preferably, from 7 mm to 8.3 mm; further preferably, from 7 mm to 8.1 mm; further preferably, from 7.5 mm to 8.1 mm; further preferably, from 7.7 mm to 8.1 mm; and further preferably, from 7.9 mm to 8.1 mm). In a specific embodiment, the length of the major axis d11 is 8.8 mm, and the length of the minor axis d12 is 8 mm.
The magnetic field generator 26 generates a variable magnetic field under an alternating current, and the magnetic field generator 26 includes, but is not limited to, an induction coil. The magnetic field generator 26 is arranged close to the receiving portion C. The magnetic field generator 26 at least partially surrounds the receiving portion C. A main body portion 26a of the magnetic field generator 26 is sleeved outside the main body portion 25a of the base 25. An electrical connection portion 26b and an electrical connection portion 26c of the magnetic field generator 26 are configured to electrically connect to the cell 23. When the second connection portion 162 of the bottom base 16 is at least partially received in the receiving portion C, the atomization core 14 or the susceptor 142 is completely located in the receiving portion C, so that a magnetic field generated by the magnetic field generator 26 can basically cover the susceptor 142. In this way, a coupling distance between the susceptor 142 and the magnetic field generator 26 is reduced, so that heating efficiency of the atomizer 10 can be improved.improve the heat efficiency of the atomizer 10. In a preferred implementation, when the second connection portion 162 of the bottom base 16 is at least partially received in the receiving portion C, the susceptor 142 and the magnetic field generator 26 are coaxial, and both extend in an axial direction of the electronic atomization apparatus 100. This is beneficial to improving the heating efficiency of the atomizer 10. An extension length of the magnetic field generator 26 in an axial direction is greater than an extension length of the susceptor 142 in an axial direction.
As shown in FIG. 13 and FIG. 14, the main body portion 26a of the magnetic field generator 26 is a solenoid coil formed by winding a relatively long wire material, for example, formed by winding 1600 to 1900 pieces of 0.02 mm Litz wires, or formed by winding 750 to 1050 pieces of 0.03 mm Litz wires. A quantity of turns or windings of the solenoid coil ranges from 6 turns to 20 turns, preferably, from 6 turns to 15 turns, further preferably, from 6 turns to 12 turns, and further preferably, from 6 turns to 10 turns. A spacing between adjacent windings approximately ranges from 0.1 mm to 0.5 mm. In a specific embodiment, the spacing between the adjacent windings is 0.2 mm or 0.4 mm. Spacings between adjacent windings may be the same or may be different.
A cross section of the wire material has a first side extending in a radial direction X of the magnetic field generator 26 and a second side extending in an axial direction Y of the magnetic field generator 26. The cross section of the wire material is approximately in a rectangular shape, and a size L of the first side is greater than a size H of the second side, so that the wire material of the magnetic field generator 26 is in a flat configuration. This is advantageous for increasing the quantity of turns of the magnetic field generator 26 per unit length, thereby increasing an inductance. In addition, the second side is arranged against a wall of the receiving portion C, that is, abuts against an outer surface of the main body portion 25a of the base 25, so that the quantity of turns of the magnetic field generator 26 an also be increased in a limited height space.
In a preferred implementation, a ratio of the size L of the first side to the size H of the second side ranges from 1.5 to 3, preferably, from 2 to 3, and further preferably, from 2.5 to 3. For example, in a specific embodiment, the ratio of the size L of the first side to the size H of the second side is 2.8.
In a preferred implementation, the size L of the first side approximately ranges from 1 to 5 mm; and the size H of the second side approximately ranges from 0.3 to 1 mm. For example, in a specific embodiment, the size L of the first side is 2.5 mm; and the size H of the second side is 0.9 mm.
In a preferred implementation, a total length of the main body portion 26a of the magnetic field generator 26 in the axial direction Y approximately ranges from 5 mm to 20 mm. In a specific embodiment, the total length of the main body portion 26a of the magnetic field generator 26 in the axial direction Y is 12.2 mm.
In a preferred implementation, a cross section of a hollow part of the main body portion 26a is non-circular, for example, is elliptic, oval, or racetrack-shaped. In some examples, a difference between a major axis and a minor axis of the ellipse ranges from 0.5 mm to 2 mm. Specifically, a length of the major axis R1 of the ellipse ranges from 8 mm to 15 mm (preferably, from 8 mm to 12 mm; further preferably, from 8 mm to 10 mm; and further preferably, from 9 mm to 10 mm). A length of the minor axis R2 of the ellipse ranges from 8 mm to 13 mm (preferably, from 8 mm to 11 mm; further preferably, from 8 mm to 10 mm; and further preferably, from 8 mm to 9 mm). In a specific embodiment, the length of the major axis R1 of the ellipse is 9.7 mm, and the length of the minor axis R2 of the ellipse is 8.9 mm.
The shielding member 27 is arranged around or sleeved outside the main body portion 26a of the magnetic field generator 26. The shielding member 27 is configured to shield a magnetic field radiated by the magnetic field generator 26 approximately in a radial direction, to avoid impact of the radiated magnetic field another component.
The sensor 28 senses an airflow change in the groove 223a through the sensing channel 223c, that is, detects inhaling of a user, to generate a signal to control the atomizer 10 to start working.
It should be noted that, the specification of this application and the accompanying drawings thereof illustrate preferred embodiments of this application. However, this application may be implemented in various different forms, and is not limited to the embodiments described in this specification. These embodiments are not intended to be an additional limitation on the content of this application, and are described for the purpose of providing a more thorough and comprehensive understanding of the content disclosed in this application. Moreover, the above technical features may further be combined to form various embodiments not listed above, and all such embodiments shall be construed as falling within the scope of the specification of this application. Further, a person of ordinary skill in the art may make improvements and variations according to the above descriptions, and such improvements and variations shall all fall within the protection scope of the appended claims of this application.

Claims

An atomizer, comprising a housing assembly, wherein the housing assembly comprises:
a liquid storage cavity, configured to store a liquid substrate; and

an atomization core in fluid communication with the liquid storage cavity, wherein the atomization core is configured to heat and atomize the liquid substrate in the liquid storage cavity, to generate an aerosol, wherein

the atomization core comprises a susceptor and a holder, wherein the susceptor is combined on at least a part of the holder, and the susceptor is configured to be capable of being penetrated by a variable magnetic field and generate heat; and

the holder is configured to not generate heat or generate heat whose amount is less than an amount of heat generated by the susceptor by one or more orders of magnitude when being penetrated by the variable magnetic field.
The atomizer according to claim 1, wherein the holder is made of a non-ferromagnetic material, and the non-ferromagnetic material comprises at least one of the following: austenitic stainless steel, aluminum, copper, gold, silver, lithium, and magnesium.
The atomizer according to claim 1, wherein an axial length of the susceptor is less than an axial length of the holder.
The atomizer according to claim 1, wherein an axial length of the susceptor ranges from 1 mm to 5 mm.
The atomizer according to claim 1, wherein the holder has a first part and a second part connected to the first part, and the susceptor is arranged on the first part.
The atomizer according to claim 5, wherein the susceptor and the holder are both constructed as a tubular structure, and the susceptor is sleeved on the first part.
The atomizer according to claim 6, wherein an outer diameter of the first part is less than an outer diameter of the second part, or a radial thickness of the first part is less than a radial thickness of the second part.
The atomizer according to claim 5, wherein the susceptor has a plurality of first through holes provided at intervals, and the first part of the holder has a plurality of second through holes provided at intervals; and the first through holes are aligned with the second through holes one by one when the susceptor is arranged on the first part.
The atomizer according to claim 5, wherein the second part of the holder has a plurality of third through holes provided at intervals.
The atomizer according to claim 5, wherein an axial length of the first part is basically the same as an axial length of the second part.
The atomizer according to claim 1, wherein the atomization core further comprises a liquid transfer unit, configured to transfer the liquid substrate in the liquid storage cavity to the susceptor and/or the holder.
The atomizer according to claim 11, wherein the susceptor and the holder are both in contact with an inner surface of the liquid transfer unit, or the susceptor and the holder are embedded in the liquid transfer unit.
The atomizer according to claim 1, wherein an upper support is further arranged in the housing assembly, and the upper support has a liquid passing hole; and the susceptor and the holder are arranged in the upper support, and are in fluid communication with the liquid storage cavity through the liquid passing hole.
The atomizer according to claim 13, wherein the susceptor has a first end close to a bottom end of the atomizer and a second end opposite to the first end; the upper support has a third end close to the bottom end of the atomizer and a fourth end opposite to the third end; and
an axial distance between the second end of the susceptor and the third end of the upper support is basically the same as an axial distance between the liquid passing hole and the third end of the upper support.
The atomizer according to claim 1, wherein the housing assembly comprises a first part and a second part that are longitudinally arranged, an air outlet is provided on one end of the first part of the housing assembly, the first part of the housing assembly defines at least a portion of the liquid storage cavity, the second part of the housing assembly extends longitudinally from one end of the first part of the housing assembly away from the air outlet, and a radial size of the second part of the housing assembly is reduced relative to the first part of the housing assembly; and
the atomization core is accommodated inside the second part.
The atomizer according to claim 1, wherein the susceptor comprises a metal heat generating layer deposited on at least a partial surface of the holder.
An electronic atomization apparatus, comprising the atomizer according to any one of claims 1 to 16 and a power supply assembly detachably connected to the atomizer, wherein the power supply assembly comprises:
a receiving portion, configured to receive at least a part of the housing assembly; and

a magnetic field generator, configured to generate a variable magnetic field under an alternating current, wherein the magnetic field generator is arranged close to the receiving portion.