CN117223908A - Atomizing core and electronic atomizing device - Google Patents
Atomizing core and electronic atomizing device Download PDFInfo
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- CN117223908A CN117223908A CN202210631709.6A CN202210631709A CN117223908A CN 117223908 A CN117223908 A CN 117223908A CN 202210631709 A CN202210631709 A CN 202210631709A CN 117223908 A CN117223908 A CN 117223908A
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- 241000208125 Nicotiana Species 0.000 claims abstract description 97
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims abstract description 97
- 238000000889 atomisation Methods 0.000 claims abstract description 65
- 239000007788 liquid Substances 0.000 claims abstract description 64
- 239000011159 matrix material Substances 0.000 claims abstract description 62
- 238000005086 pumping Methods 0.000 claims abstract description 50
- 238000003860 storage Methods 0.000 claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 239000000758 substrate Substances 0.000 claims description 34
- 230000035515 penetration Effects 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 4
- 239000000779 smoke Substances 0.000 description 12
- 239000000443 aerosol Substances 0.000 description 7
- 230000001276 controlling effect Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000003571 electronic cigarette Substances 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000000391 smoking effect Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
- A24F40/46—Shape or structure of electric heating means
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
- A24F40/44—Wicks
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
- A24F40/48—Fluid transfer means, e.g. pumps
- A24F40/485—Valves; Apertures
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/10—Devices using liquid inhalable precursors
Landscapes
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Catching Or Destruction (AREA)
Abstract
The application provides an atomization core and an electronic atomization device, wherein the atomization core comprises a porous matrix and a heating element, the porous matrix is provided with a liquid suction surface and an atomization surface, and the heating element is arranged on the atomization surface; defining that the porous matrix is divided into a seepage part and a temporary liquid storage part which are connected, wherein the temporary liquid storage part is close to the atomization surface, and the temporary liquid storage part is the maximum volume Q of tobacco tar which can be atomized in one suction period of the atomization core c1 A portion occupying the volume of the porous matrix; in any one of the suction cycles in which successive suction is performed, the atomizing core satisfies: q (Q) cn ≥Q xn ≥Q bn ，Q cn Representing the volume of tobacco tar stored in the temporary reservoir prior to the start of the nth pumping cycle, Q xn Represents the volume of the tobacco tar actually atomized in the nth pumping cycle, Q bn Representing the volume of tobacco tar entering the porous matrix during the nth pumping cycle. The atomized wick may not be fried and not stick to the wick during multiple successive pumping cycles.
Description
Technical Field
The application relates to the technical field of electronic atomization devices, in particular to an atomization core and an electronic atomization device.
Background
With the improvement of the health consciousness of tobacco consumers and the development of international smoking control exercises, electronic cigarettes are gradually popular with consumers. The key device in electronic cigarettes is an atomizing core, which generally comprises a porous matrix and a heating element arranged on the porous matrix. When the consumer sucks the electronic cigarette, the porous matrix adsorbs tobacco tar to the heating element, and the tobacco tar can be heated and atomized under the electric heating effect of the heating element to generate smoke. At present, the commercial electronic cigarette generally has the phenomenon of oil explosion caused by too much tobacco tar content in a porous matrix or the phenomenon of core pasting caused by too little tobacco tar content in the porous matrix, thereby seriously affecting the use feeling of a user.
Disclosure of Invention
In view of this, the present application provides an atomizing core and an electronic atomizing device. The atomized wick may not be fried and not stick to the wick during multiple successive pumping cycles.
The first aspect of the application provides an atomization core, which comprises a porous matrix and a heating element, wherein the porous matrix is provided with a liquid suction surface and an atomization surface, and the heating element is arranged on the atomization surface; defining that the porous matrix is divided into a seepage part and a temporary liquid storage part which are connected, wherein the temporary liquid storage part is close to the atomization surface, and the temporary liquid storage part is the maximum volume Q of tobacco tar which can be atomized in one suction period of the atomization core c1 A portion occupying the volume of the porous matrix;
wherein,
Q c1 ＝V×σ (1)
in any one of the suction cycles in which successive suction is performed, the atomizing core satisfies:
Q cn ≥Q xn ≥Q bn (2)
when n is more than or equal to 2,
wherein V is the volume of the temporary liquid storage part, and the unit is cm 3 The method comprises the steps of carrying out a first treatment on the surface of the Sigma is the porosity of the porous matrix; q (Q) cn Representing the volume of the tobacco tar stored in the temporary reservoir before the start of the nth pumping cycle, Q xn Representing the volume of tobacco tar actually atomized during the nth pumping cycle，Q bn Representing the volume of tobacco tar entering the porous matrix during the nth pumping cycle, said Q cn 、Q c1 、Q xn And Q bn The units of (a) are mL; i is any integer value between 1 and n; f (T) i ) Representing the mass of the actually atomized tobacco tar as a function of suction time during the ith cycle; t (T) i The duration of the ith pumping cycle is s; t is t i Is the interval time between the i-th pumping cycle and the (i+1) -th pumping cycle, in s; v (v) b (h) The penetration speed of tobacco tar in the porous matrix at a distance h from the atomization surface is given in cm/s; s (h) is the cross-sectional area of the porous matrix in cm at a distance h from the atomizing face 2 。
The atomization core stores the volume Q of tobacco tar in the temporary liquid storage part in a plurality of continuous pumping cycles cn Volume Q of tobacco tar consumed by atomization on atomization surface xn And the volume Q of tobacco tar entering the atomizing core bn The relation can always be met, and a proper amount of tobacco tar can be always stored in the atomization core, so that the phenomena of core pasting and oil frying in the process of a plurality of continuous pumping periods can be effectively avoided, and the use experience of consumers can be remarkably improved.
A second aspect of the present application provides an electronic atomizing device with an atomizing core provided in the first aspect of the present application.
When the electronic atomization device works, tobacco tar and the like are led into the heating body arranged on the electronic atomization device through the porous matrix, and smoke can be evaporated when the heating body is heated. Due to the adoption of the atomization core, when the electronic atomization device continuously works for a plurality of pumping periods, the core is not stuck and oil is not fried, so that the use experience of a user is good, and the service life of the electronic atomization device is long. In addition, the smoke produced by the electronic atomization device has good taste and high plumpness.
Drawings
FIG. 1 is a schematic view of an atomizing core according to an embodiment of the present disclosure;
FIG. 2 is a gray scale view of a view angle of the atomizing core according to embodiment 1 of the present disclosure;
FIG. 3 is a plot of aerosol mass of aerosol core measured as a function of time for an aerosol of aerosol core according to example 1 of the present application;
fig. 4 is a gray scale view of a viewing angle of the atomizing core according to embodiment 3 of the present disclosure.
Description of the drawings: 100-atomizing cores; 10-a porous matrix; 101-sucking liquid level; 102-atomizing surface; 103-a seepage part; 104-a temporary reservoir; 20-heating element.
Detailed Description
At present, electronic atomization devices on the market have the problems of oil frying and core pasting. The "frying oil" is generated by the phenomenon that excessive tobacco oil is accumulated on the atomization surface in a short time, so that the tobacco oil on the atomization surface is boiled when heated, and similar "frying oil" sound generated when water drops into the frying pan occurs. And when "frying oil", unnecessary tobacco tar can splash to electron atomizing device's atomizing intracavity, causes the liquid in the atomizing chamber to pile up, seriously influences consumer's use experience and causes the waste of tobacco tar. The 'burnt core' is generated by dry burning of the heating element on the atomization surface, and the burnt smell is generated, so that the use experience of consumers is seriously affected. To solve the above problems, embodiments of the present application provide an atomizing core.
Specifically, the technical scheme of the application is described in detail below with reference to the accompanying drawings.
Referring to fig. 1, the atomizing core 100 includes a porous substrate 10 and a heat generating member 20, wherein the porous substrate 10 has a liquid suction surface 101 and an atomizing surface 102, and the heat generating member 20 is disposed on the atomizing surface 102; defining the porous matrix 10 to be divided into a connected liquid permeable portion 103 and a temporary liquid storage portion 104, the temporary liquid storage portion 104 being adjacent to the atomizing face 102, the temporary liquid storage portion 104 being the maximum volume Q of tobacco tar that can be atomized in one pumping cycle of the atomizing core 100 c1 A portion occupying the volume of the porous matrix 10;
wherein,
Q c1 ＝V×σ (1)
in any one of the suction cycles in which successive suction is performed, the atomizing core 100 satisfies:
Q cn ≥Q xn ≥Q bn (2)
when n is more than or equal to 2,
wherein V is the volume of the temporary reservoir 104 in cm 3 The method comprises the steps of carrying out a first treatment on the surface of the σ is the porosity of the porous matrix 10; q (Q) cn Represents the volume of tobacco tar stored in temporary reservoir 104 prior to the start of the nth pumping cycle, Q xn Represents the volume of the tobacco tar actually atomized in the nth pumping cycle, Q bn Representing the volume of tobacco tar entering the porous substrate 10 in the nth pumping cycle, above Q cn 、Q xn And Q bn The units of (a) are mL; i is any integer value between 1 and n; f (T) i ) Representing the mass of the actually atomized tobacco tar as a function of suction time during the ith cycle; t (T) i The duration of the ith pumping cycle is s; t is t i Is the interval time between the i-th pumping cycle and the (i+1) -th pumping cycle, in s; v (v) b (h) Is the penetration rate of the tobacco tar in the porous matrix 10 at a distance h from the atomizing surface 102, in cm/s; s (h) is the cross-sectional area of the porous substrate 10 in cm at a distance h from the atomizing face 102 2 。
Note that, all of the tobacco tar atomized in the i-th suction period comes from the tobacco tar already stored in the temporary liquid storage portion 104 before the suction, and the tobacco tar entered into the porous substrate 10 in the i-th suction period is atomized in the (i+1) -th suction period.
The temporary liquid storage portion 104 and Q c1 Is described in detail below:
defining a maximum volume Q of tobacco tar that can be atomized during a pumping cycle of the atomizing core 100 c1 The portion occupying the volume of the porous matrix 10 is the temporary reservoir 104. That is, the maximum volume of tobacco tar that can be atomized by one suction is at the upper level in the atomizing core 100 at a distance h from the atomizing face 102 d The entire space surrounded by the plane and the atomizing face 102, and part of the side wall of the porous base body 10 is a temporary liquid reservoir 104 (i.e., temporary liquid reservoirHas a height of h d See fig. 1). Naturally, the entire space surrounded by the surface of the upper liquid surface of the tobacco tar, the liquid suction surface 101, and a part of the side wall of the porous substrate 10 is the liquid seepage portion 103.
It will be appreciated that for each atomizing core, Q c1 Is determined. And, the volume of the temporary liquid storage portion 104 can be determined according to h d Is calculated by a mathematical formula. As can be appreciated, the critical conditions for the occurrence of the sticking phenomenon are: maximum volume Q of aerosol in temporary reservoir 104 during a single puff c1 Equal to the volume Q 'of tobacco tar actually consumed by the suction' x1 I.e. the level of the tobacco tar at the end of a single puff is exactly coincident with the atomizing face 102. If Q c1 Less than Q 'above' x1 The core pasting occurs.
Thus, it is assumed that T is continuously and uniformly sucked h When the paste core occurs, the height at the atomizing face 102 is noted as 0, namely:
there is also a combination of the above-mentioned materials,
Q c1 ＝V×σ＝Q' x1 (5)
in the above relation, v b (h) Refers to the penetration rate of the tobacco tar in the porous substrate 10 at a height h from the atomizing surface 102, and is closely related to the viscosity of the tobacco tar, the temperature of the tobacco tar in the porous substrate, and the pore structure (pore size distribution and porosity sigma) of the porous substrate 11, and can be determined by the oil penetration experiment of the atomizing core. In addition, σ is a known parameter for the existing atomizing core, or σ can be experimentally measured.
Also because of Q at this time c1 And is equal to Q' x1 Q 'above' x1 From the amount of actually atomized tobacco tar and the suction time T h The above-mentioned functional relationship can also be obtained by earlier experiments, so that the combined formula (4) and formula (5) can obtain T h And h d Can then determine a value ofMaximum volume Q of aerosol which can be atomized during a pumping cycle c1 And the volume V of the temporary reservoir 104.
It will be appreciated that when n.gtoreq.2, Q cn After (n-1) cycles of continuous operation of the atomizing core 100, the amount of smoke stored in the temporary reservoir 104, i.e., the total volume Q of smoke in the temporary reservoir 104 before the start of the 1 st cycle c1 Adding (n-1) the total volume of tobacco tar entering the porous matrix in each cycle(during the interval period t between two adjacent pumping cycles) i In, because of inertial effects, also of smoking oil being sucked into the porous matrix 10), subtracting the total volume of actually atomized smoking oil in (n-1) cycles ∈>Thus, equation (3) can be obtained:
when n is more than or equal to 2,
also, the tobacco tar entering the porous substrate 10 during the ith pumping cycle will be atomized during the (i+1) th pumping cycle, and it will be appreciated that the critical conditions for the "frying" of the atomized core 100 are:
volumetric amount Q 'of tobacco tar into porous matrix 10' b1 Equal to the total volume Q 'of the tobacco tar actually atomized' x1 The total volume of tobacco tar in the atomizing core 100 after the end of the pumping cycle is Q c1 -Q' x1 +Q' b1 This value is equal to the capacity Q of the temporary reservoir 104 c1 . If Q' x1 <Q' b1 Then there is Q c2 >Q c1 At this time, the tobacco tar overflows into the liquid seepage portion 103. And excessive amounts of soot inside the porous matrix 10 may cause soot to accumulate on the atomizing face 102 in a short period of time, resulting in "frying". Therefore, to ensure that the atomizing core 100 does not experience frying oil during any of a plurality of consecutive pumping cycles, Q is required to be satisfied xn ≥Q bn 。
In summary, the temporary reservoir 104 is controlled to contain a sufficient amount of tobacco tar before each pumping cycle begins, such that the volume Q of tobacco tar atomized per pumping cycle xn Less than or equal to the volume Q of tobacco tar stored in temporary reservoir 104 cn The phenomenon of sticking the core can be effectively avoided. While controlling the volumetric quantity Q of tobacco tar entering the atomizing core 100 during each puff xn Between Q bn And Q is equal to cn In between, when enough tobacco tar exists in the temporary liquid storage portion 104 before the next pumping period starts, the phenomenon of 'frying oil' caused by the fact that excessive tobacco tar permeates into the atomization surface 102 in a short time can be avoided, and therefore the use experience of consumers can be remarkably improved. In addition, the service life of the atomizing core 100 may also be extended.
In some embodiments of the application, Q as described above bn The following relationship is satisfied: q (Q) bn ＝ν b (h)×S(h)×T n X sigma (formula 6); wherein v b (h) Is the penetration rate of the tobacco tar in the porous matrix 10 at a distance h from the atomizing surface 102, in cm/s; s (h) is the cross-sectional area of the porous substrate 10 in cm at a distance h from the atomizing face 102 2 。
In some embodiments of the application, Q as described above xn The following relationship is satisfied:wherein f (T) n ) Represents the mass of the atomized tobacco tar as a function of the time of suction, ρ being the density of the tobacco tar in mg/mL. f (T) n ) Can be measured by earlier experiments. In some cases, the mass of the tobacco tar actually atomized by the atomizing core at different time points is measured respectively to obtain a relation curve of the mass of the tobacco tar actually atomized and time, and f (T) n ) And then substituting the density of the tobacco tar to obtain Q of the atomizing core 100 xn 。
In some embodiments of the application, t is as defined above i The following relationship is satisfied:in general, if a user continuously sucks a plurality of cigarettes, the duration of time for which a single-port suction is performed is generally 2.0s to 2.5s, and the interval time between two adjacent ports is generally required to be a certain duration, for example, in the range of more than 0s to less than or equal to 1 s. And define t i Within the above range, it is convenient to define whether or not a plurality of pumping actions performed by the user account for continuous pumping.
In some embodiments of the application, t is as defined above i And 0.6s or less.
In some embodiments of the application, T is as described above i And 3s or less. Generally, when a consumer sucks tobacco tar by using the electronic atomization device, a comfortable use experience can be obtained only when the single-port sucking time is not longer than 3s.
In some embodiments of the application, n is 15 or less. At this time, the atomizing core 100 does not cause the core burn phenomenon in not more than 15 consecutive suction cycles.
In some embodiments, when each pumping cycle is performed for 3s, and the interval between every two adjacent pumping cycles is 0.6s, and 15 cycles are continuously pumped, the atomizing core 100 does not generate the phenomena of core pasting and frying oil.
In some embodiments of the present application, the porosity σ of the porous substrate 10 is in the range of 40% -60%. Illustratively, the porosity of the porous matrix 10 may be 40%, 45%, 50%, 55%, 60%, etc. By controlling the porosity of the porous matrix 10, not only the total volume of the tobacco tar entering the porous matrix 10 in each pumping cycle can be directly regulated, but also the conduction rate of the tobacco tar in the seepage part 103 and the temporary liquid storage part 104 can be changed, so that the Q of the atomization core 100 can be further regulated bn In a proper range, the tobacco tar can be conducted onto the atomization surface 102 faster and better, so that a fast and excellent atomization effect can be realized, and the atomization core 100 is also beneficial to ensuring that the core is not stuck and the oil is not fried.
In some embodiments, the porosity σ may be the same or different throughout the interior of the porous matrix 10. The parameters may be determined according to the shape, size and actual use requirements of the porous matrix.
In some embodiments of the application, the volume V of the temporary reservoir 104 is 0.01cm 3 -0.2cm 3 Within a range of (2). In some embodiments, V is at 0.01cm 3 -0.1cm 3 Within a range of (2). The above V may be, for example, 0.01cm 3 、0.02cm 3 、0.03cm 3 、0.04cm 3 、0.05cm 3 、0.1cm 3 、0.15cm 3 、0.2cm 3 Etc. By adjusting and controlling the dimensions of the porous substrate 10 and the pore structure and distribution of the porous substrate 10, V can be controlled within the above range, which is beneficial to ensuring that the atomizing core 100 can provide a proper amount of tobacco tar for atomization in each pumping cycle, thereby ensuring that the core is not stuck and the oil is not fried and improving the sucking experience of users.
In some embodiments of the application, qc 1 At 0.004cm 3 -0.12cm 3 Within a range of (2). In some embodiments, qc 1 At 0.004cm 3 -0.06cm 3 Within a range of (2). Illustratively, the above Qc 1 Can be 0.004cm 3 、0.005cm 3 、0.006cm 3 、0.007cm 3 、0.008cm 3 、0.009cm 3 、0.01cm 3 、0.05cm 3 、0.06cm 3 、0.07cm 3 、0.08cm 3 、0.09cm 3 、0.1cm 3 、0.12cm 3 Etc. Control Qc 1 Within the above ranges, it is advantageous to control the aerosol core 100 to provide an appropriate amount of tobacco tar in each puff cycle, thereby allowing a user to obtain a good use experience.
In some embodiments of the application, the penetration rate v of the tobacco tar in the porous substrate 10 at a distance h from the atomizing face 102 b (h) In the range of 0.01cm/s to 0.2 cm/s. In some embodiments, the penetration rate v of the tobacco tar in the porous substrate 10 at a distance h from the atomizing face 102 b (h) In the range of 0.01cm/s to 0.1 cm/s. Illustratively, the v b (h) May be 0.01cm/s, 0.02cm/s, 0.03cm/s, 0.04cm/s, 0.05cm/s, 0.1cm/s, 0.15cm/s, 0.2cm/s, etc. Controlling multiple poresPenetration velocity v of the matrix 10 everywhere b (h) Within the above range, it is advantageous to control the total volume Q of tobacco tar entering the porous substrate 10 during each pumping cycle bn In a proper range, the conduction rate of the tobacco tar in the porous matrix 10 is also favorable to be ensured to be proper, so that the tobacco tar can enter the temporary liquid storage part 104 in the expected time, the atomization core 100 is favorable to be ensured not to be fried and not to be burnt in a plurality of continuous pumping periods, the tobacco tar is favorable to be converted into smoke with fine taste, and the sucking experience of a user can be improved.
In the present application, v of porous substrate 10 at different heights h from atomizing surface 102 b (h) May be the same or different. Wherein v b (h) The smoke can be gradually reduced along the penetration direction of the smoke oil, can be unchanged and then reduced, and can also be changed in a gradient way.
In some embodiments of the application, the maximum cross-sectional dimension of the weeping portion 103 is smaller than the maximum cross-sectional dimension of the temporary reservoir portion 104. Wherein the cross section is perpendicular to the direction of the liquid suction surface 101 of the porous substrate 10 to the atomizing surface 102. The maximum cross-sectional dimension of the liquid seepage portion 103 is smaller than that of the temporary liquid storage portion 104, so that the volume of tobacco tar entering the temporary liquid storage portion 104 from the liquid seepage portion 103 in unit time can be further controlled, and the phenomenon of oil frying can be better avoided.
In some embodiments of the application, the cross-sectional area of the porous substrate 10 is constant and then increases along the extension of the liquid suction surface 101 toward the atomizing surface 102. At this time, the longitudinal section of the porous substrate (the longitudinal section is parallel to the direction from the liquid suction surface 101 of the porous substrate 10 to the atomization surface 102) is in a "step shape", which is beneficial to controlling the tobacco tar in the temporary liquid storage portion 104 to continuously and uniformly infiltrate onto the atomization surface 102, so that consumers obtain better use experience.
In some embodiments of the present application, the cross-sectional area of the porous substrate 10 increases gradually along the extension of the liquid suction surface 101 toward the atomizing surface 102. At this time, the shape of the porous substrate 10 may be a prismatic table, and the tobacco tar in the temporary liquid storage portion 104 can be well controlled to continuously and uniformly infiltrate onto the atomization surface 102, so that consumers obtain better use experience.
In the present application, the shape of the longitudinal section of the porous substrate 10 (the longitudinal section being parallel to the direction of the liquid suction surface 101 of the porous substrate 10 toward the atomizing surface 102) may be an inverted "T" shape, a trapezoid shape, an irregular pattern composed of a plurality of trapezoids or rectangles, or the like, and the side wall of the porous substrate 10 (the portion of the porous substrate 10 between the liquid suction surface 101 and the atomizing surface 102, the side wall connecting the liquid suction surface 101 and the atomizing surface 102) may be a plane or a curved surface, and the shapes of the liquid suction surface 101 and the atomizing surface 102 are not particularly limited. Wherein the wicking surface 101 and the atomizing surface 102 may be disposed opposite one another. Those skilled in the art can choose according to the actual production requirements.
In some embodiments of the present application, heat-generating component 20 includes, but is not limited to, any of a heat-generating film, a heat-generating sheet, a heat-generating circuit, and a heat-generating mesh.
In some embodiments of the present application, the material of the porous substrate 10 includes, but is not limited to, at least one of porous ceramic and oil-guiding cotton, the porous substrate 10 may be porous ceramic, or the porous substrate 10 may be oil-guiding cotton, or the porous substrate 10 is composed of porous ceramic and oil-guiding cotton.
The embodiment of the application also provides an electronic atomization device, which is provided with the atomization core 100 provided by the embodiment of the application.
When the electronic atomization device works, tobacco tar and the like are led into the heating body arranged on the electronic atomization device through the porous matrix, and smoke can be evaporated when the heating body is heated. Due to the adoption of the atomization core, when the electronic atomization device continuously works for a plurality of pumping periods, the core is not stuck and oil is not fried, so that the use experience of a user is good, and the service life of the electronic atomization device is long. In addition, the smoke produced by the electronic atomization device has good taste and high plumpness.
The technical scheme of the application is described in detail below with reference to specific embodiments.
Example 1
Embodiment 1 provides an aerosolizing core with a gray scale view at a certain viewing angle as can be seen in fig. 2.
The atomizing core is in the shape ofThe inverted T-shaped structure is provided with a liquid suction surface and an atomization surface which are oppositely arranged, and a heating element is arranged on the atomization surface, wherein the liquid suction surface is arranged on the upper surface (the surface with smaller cross section maximum size) of the porous matrix, and the atomization surface is arranged on the lower surface (the surface with larger cross section maximum size) of the porous matrix. The atomizing core has a temporary liquid storage part with a volume of V (the temporary liquid storage part has a distance h from the atomizing surface d The plane of the part and the atomizing surface, the side wall of the porous matrix, the liquid seepage part is the part of the porous matrix except the temporary liquid storage part), namely the maximum volume Q of the tobacco tar which can be atomized in one suction period of the atomizing core c1 The volume occupied by the porous matrix is V. The liquid suction surface of the atomizing core has a size of 4.8mm×2.2mm, the atomizing surface has a size of 8.0mm×3.0mm, and the upper rectangular body has a thickness h 1 Thickness dimension h of lower cuboid of 2.5mm 2 The heating element is a metal heating wire which is arranged on the atomization surface in a screen printing mode and is 0.8 mm. Wherein, the porosity sigma of the porous matrix is 58%, and the density rho of the adopted tobacco tar is 1.1mg/mL.
The above-mentioned atomized core was subjected to a fume suction collection test, and the results of the fume suction collection test at different times were shown in fig. 3. Further fitting to obtain a functional relation between the atomization amount of the tobacco tar and the suction timeMeanwhile, the penetration speed of tobacco tar in the porous matrix is 2.8x10 according to the oil penetration experimental test -2 cm/s. The critical conditions for the occurrence of the core pasting phenomenon are as follows: the level of the tobacco tar at the end of a single puff coincides exactly with the plane of atomization, i.e. assuming continuous and uniform puffs T h When the paste core occurs, the height of the atomizing surface 102 is recorded as 0, and there are:
Q c1 ＝V×σ (1)
there is also a combination of the above-mentioned materials,
ν b (h)×T h ＝T d (8)
substituting the above measurement results into equations (1), (4) and (8), respectively, there are:
0.28×T h ＝h d
wherein, find h d ＝1.23×10 -1 cm，T h =4.53 s. According to h d Can be calculated as v= 21.8596 ×10 -3 cm 3 。
Also, Q bn ＝ν b (h)×S(h)×T n X sigma (formula 6). Then a single pumping cycle duration T i If the values are 3s, substituting the values into the formulas (1), (6) and (7) respectively, and calculating to obtain Q c1 、Q x1 And Q b1 12.67×10 respectively -3 mL、6.39×10 -3 mL、5.14×10 -3 mL, satisfy Q c1 ≥Q x1 ≥Q b1 。
When continuously sucking two atomizing cores, the interval time t between the second sucking period and the first sucking period 1 0.6s, substituted into (3)Calculated to obtain Q c2 ＝12.44×10 -3 mL and Q x2 And Q b2 6.39X10 respectively -3 mL、5.14×10 -3 mL, also satisfy Q c2 ≥Q x2 ≥Q b2 。
When continuously sucking 15 atomizing cores, the interval time t between 15 th suction period and 14 th suction period 14 Also 0.6s (T) 15 ＝3s，t 14 =0.6 s), Q can be calculated according to the above formula (3) c15 9.45X10 -3 mL, simultaneously with Q x15 And Q b15 6.39X10 respectively -3 mL、5.14×10 -3 mL, see Q satisfied c15 ≥Q x15 ≥Q b15 Thus the atomized cores still did not stick to the cores and did not blow oil when continuously sucking 15 ports.
Example 2
Example 2 provides an atomizing core having structural features and dimensions consistent with example 1. The porosity sigma of the porous matrix is 40%, and the density rho of the adopted tobacco tar is 1.1mg/mL.
The smoke sucking and collecting test is carried out on the atomization core, and the function relation between the smoke oil atomization amount and the sucking time is obtained by fittingAt the same time, the penetration rate of tobacco tar in the porous matrix is 2.5 multiplied by 10 according to the experimental test of the penetration rate of tobacco tar -2 cm/s, and substituting the above measured results into the formulae (1), (4) and (8), respectively, there are:
0.25×T h ＝h d
obtaining h d ＝1.04×10 -1 cm，T h =4.17 s. Namely, the temporary liquid storage part has a height of 1.04 multiplied by 10 from the atomization surface -1 The plane at cm is the whole space surrounded by the atomizing surface and the side wall of the porous matrix. According to h d ＝1.04×10 -1 cm can be calculated to obtain the volume V= 21.7344 ×10 of the temporary liquid storage part -3 cm 3 Duration T of a single pumping cycle i All 3s, Q c1 、Q x1 And Q b1 8.71×10 respectively -3 mL、4.51×10 -3 mL、3.17×10 -3 mL, satisfy Q c1 ≥Q x1 ≥Q b1 。
The interval time t from the first suction period when the second port is continuously sucked 1 At 0.6s, Q can be obtained c2 、Q x2 And Q b2 8.43×10 respectively -3 mL、4.51×10 -3 mL、3.17×10 -3 mL, also satisfy Q c2 ≥Q x2 ≥Q b2 。
When port 15 is continuously sucked (T 15 ＝3s，t 14 =0.6 s), Q can be obtained c15 、Q x15 And Q b15 4.84×10 respectively -3 mL、4.51×10 -3 mL、3.17×10 -3 mL, satisfy Q c15 ≥Q x15 ≥Q b15 Thus the atomized cores still did not stick to the cores and did not blow oil when continuously sucking 15 ports.
Example 3
Example 3 provides an atomizing core that is prismatic in shape (as shown in fig. 4). The liquid suction surface of the atomizing core has a size of 5.0mm×4.0mm, the atomizing surface has a size of 10.0mm×4.0mm, and the trapezoid thickness h has a thickness of 5.0mm. The longitudinal section of the atomizing core is isosceles trapezoid, and the height of the isosceles trapezoid is h 3 The width at the point is (10-h 3 ). The heating element is a metal heating wire arranged on the atomization surface in a screen printing mode. The porosity sigma of the porous matrix is 58%, the density rho of the adopted tobacco tar is 1.1mg/mL, and the penetration speed of the tobacco tar in the porous matrix is 1.8X10 -2 cm/s. Fitting to obtain a functional relation between the atomization amount of the tobacco tar and the suction timeSubstituting the above measurement results into equations (1), (4) and (8), respectively, there are:
0.18T h ＝h d
obtaining h d ＝1.28×10 -1 cm，T h =7.09 s. Namely the temporary liquid storage part is 1.28X10 height from the atomization surface -1 The plane at cm position, the atomizing surface and the side wall of the porous matrix form a whole space, and the volume V= 47.8217 ×10 of the temporary liquid storage part - 3 cm 3 . Duration T of a single pumping cycle i When the two are 3s, Q is calculated c1 、Q x1 And Q b1 27.741 ×10 respectively -3 mL、8.55×10 -3 mL、6.26×10 -3 mL, satisfy Q c1 ≥Q x1 ≥Q b1 。
Interval from the first suction period when the second port is continuously suckedTime t 1 At 0.6s, Q can be obtained c2 、Q x2 And Q b2 27.61×10 respectively -3 mL、8.55×10 -3 mL、6.26×10 -3 mL, also satisfy Q c2 ≥Q x2 ≥Q b2 。
When port 15 is continuously sucked (T 15 ＝3s，t 14 =0.6 s), Q can be obtained c15 、Q x15 And Q b15 25.97X10 respectively -3 mL、8.55×10 -3 mL、6.26×10 -3 mL, satisfy Q c15 ≥Q x15 ≥Q b15 Thus the atomized cores still did not stick to the cores and did not blow oil when continuously sucking 15 ports.
Example 4
Example 4 provides an atomizing core having structural features and dimensions consistent with example 3. The porosity sigma of the porous matrix is 58%, the density rho of the adopted tobacco tar is 1.1mg/mL, and the penetration speed of the tobacco tar in the porous matrix is 0.011cm/s. Fitting to obtain a functional relation between the atomization amount of the tobacco tar and the suction timeSubstituting the above measurement results into equations (1), (4) and (8), respectively, there are:
0.11T h ＝h d
obtaining h d ＝7.18×10 -1 cm，T h =6.53 s. Namely, the temporary liquid storage part is 7.18 multiplied by 10 from the atomizing surface -1 The plane at cm position, the atomizing surface and the side wall of the porous matrix form a whole space, and the volume V= 23.168 ×10 of the temporary liquid storage part - 3 cm 3 . Duration T of a single pumping cycle i All 3s, Q c1 、Q x1 And Q b1 16.06X10 respectively -3 mL、5.85×10 -3 mL、3.83×10 -3 mL, satisfy Q c1 ≥Q x1 ≥Q b1 。
The interval time t from the first suction period when the second port is continuously sucked 1 At 0.6s, Q can be obtained c2 、Q x2 And Q b2 15.35×10 respectively -3 mL、5.85×10 -3 mL、3.83×10 -3 mL, also satisfy Q c2 ≥Q x2 ≥Q b2 。
When port 15 is continuously sucked (T 15 ＝3s，t 14 =0.6 s), Q can be obtained c15 、Q x15 And Q b15 6.23×10 respectively -3 mL、5.85×10 -3 mL、3.83×10 -3 mL, satisfy Q c15 ≥Q x15 ≥Q b15 Thus the atomized cores still did not stick to the cores and did not blow oil when continuously sucking 15 ports.
While the foregoing is directed to exemplary embodiments of the present application, it will be appreciated by those skilled in the art that various modifications and adaptations can be made thereto without departing from the principles of the present application, and such modifications and adaptations are intended to be comprehended within the scope of the present application.
Claims (13)
1. The atomizing core is characterized by comprising a porous matrix and a heating element, wherein the porous matrix is provided with a liquid suction surface and an atomizing surface, and the heating element is arranged on the atomizing surface; defining that the porous matrix is divided into a seepage part and a temporary liquid storage part which are connected, wherein the temporary liquid storage part is close to the atomization surface, and the temporary liquid storage part is the maximum volume Q of tobacco tar which can be atomized in one suction period of the atomization core c1 A portion occupying the volume of the porous matrix;
wherein,
Q c1 ＝V×σ (1)
in any one of the suction cycles in which successive suction is performed, the atomizing core satisfies:
Q cn ≥Q xn ≥Q bn (2)
when n is more than or equal to 2,
wherein V is the volume of the temporary liquid storage part, and the unit is cm 3 The method comprises the steps of carrying out a first treatment on the surface of the Sigma is the porosity of the porous matrix; q (Q) cn Representing the volume of the tobacco tar stored in the temporary reservoir before the start of the nth pumping cycle, Q xn Represents the volume of the tobacco tar actually atomized in the nth pumping cycle, Q bn Representing the volume of tobacco tar entering the porous matrix during the nth pumping cycle, said Q cn 、Q c1 、Q xn And Q bn The units of (a) are mL; i is any integer value between 1 and n; f (T) i ) Representing the mass of the actually atomized tobacco tar as a function of suction time during the ith cycle; t (T) i The duration of the ith pumping cycle is s; t is t i Is the interval time between the i-th pumping cycle and the (i+1) -th pumping cycle, in s; v (v) b (h) The penetration speed of tobacco tar in the porous matrix at a distance h from the atomization surface is given in cm/s; s (h) is the cross-sectional area of the porous matrix in cm at a distance h from the atomizing face 2 。
2. The atomizing core of claim 1, wherein the Q bn The following relationship is satisfied: q (Q) bn ＝ν b (h)×S(h)×T n ×σ。
3. The atomizing core of claim 1, wherein the Q xn The following relationship is satisfied:wherein ρ is the density of the tobacco tar in mg/mL.
4. An atomizing core as set forth in claim 1, wherein said t i The following relationship is satisfied:
5. the atomizing core of claim 1, wherein the Qc is 1 At 0.004cm 3 -0.12cm 3 Within a range of (2).
6. An atomizing core as set forth in claim 1, wherein said σ is in the range of 40% -60%.
7. The atomizing core of claim 1, wherein the v b (h) In the range of 0.01cm/s to 0.2 cm/s.
8. An atomizing core as set forth in claim 1 or 4, wherein said t i And 0.6s or less.
9. The atomizing core of claim 1, wherein n is 15 or less.
10. An atomizing core as set forth in claim 1, wherein said T i And 3s or less.
11. The atomizing wick of claim 1, wherein a maximum cross-sectional dimension of the liquid permeable portion is less than a maximum cross-sectional dimension of the temporary liquid reservoir.
12. The atomizing core of claim 11, wherein a cross-sectional area of the porous substrate increases gradually along an extension of the liquid-absorbing surface toward the atomizing surface, or wherein a cross-sectional area of the porous substrate increases first and then along an extension of the liquid-absorbing surface toward the atomizing surface.
13. An electronic atomizing device, characterized in that it is provided with an atomizing core as set forth in any one of claims 1 to 12.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210631709.6A CN117223908A (en) | 2022-06-06 | 2022-06-06 | Atomizing core and electronic atomizing device |
| PCT/CN2023/077343 WO2023236585A1 (en) | 2022-06-06 | 2023-02-21 | Atomization core and electronic atomization device |
| EP23177377.1A EP4289296A1 (en) | 2022-06-06 | 2023-06-05 | Vaporization core and electronic vaporization apparatus |
| US18/328,794 US20230389609A1 (en) | 2022-06-06 | 2023-06-05 | Vaporization core and electronic vaporization apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210631709.6A CN117223908A (en) | 2022-06-06 | 2022-06-06 | Atomizing core and electronic atomizing device |
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| CN117223908A true CN117223908A (en) | 2023-12-15 |
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| CN202210631709.6A Pending CN117223908A (en) | 2022-06-06 | 2022-06-06 | Atomizing core and electronic atomizing device |
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| Country | Link |
|---|---|
| US (1) | US20230389609A1 (en) |
| EP (1) | EP4289296A1 (en) |
| CN (1) | CN117223908A (en) |
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| US10612770B2 (en) * | 2014-10-20 | 2020-04-07 | Numerical Design, Inc. | Microfluidic-based apparatus and method for vaporization of liquids |
| CN111820461A (en) * | 2019-04-16 | 2020-10-27 | 常州市派腾电子技术服务有限公司 | Cigarette bullet and electron cigarette |
| CN110384258A (en) * | 2019-06-14 | 2019-10-29 | 深圳麦克韦尔科技有限公司 | Electronic atomization device and its atomizer and heat generating component |
| CN110477456A (en) * | 2019-08-02 | 2019-11-22 | 深圳麦克韦尔科技有限公司 | Porous structure component and electronic cigarette |
| CN112385898A (en) * | 2019-08-13 | 2021-02-23 | 彭晓峰 | Novel atomizing core |
| CN110558632A (en) * | 2019-10-23 | 2019-12-13 | 深圳市你我网络科技有限公司 | Atomizer and electronic cigarette |
| CN111000293A (en) * | 2019-12-05 | 2020-04-14 | 东莞市陶陶新材料科技有限公司 | Electronic cigarette atomization core and preparation method thereof |
| KR102399212B1 (en) * | 2020-01-31 | 2022-05-17 | 주식회사 케이티앤지 | Vaporizer and aerosol-generating apparatus including the same |
| CN111227310A (en) * | 2020-02-17 | 2020-06-05 | 深圳麦克韦尔科技有限公司 | Electronic atomization device and atomization core thereof |
| EP4136992A4 (en) * | 2020-04-26 | 2024-01-10 | Shenzhen Smoore Technology Ltd | Heating assembly, atomizer and electronic atomization device |
| CN212814262U (en) * | 2020-05-11 | 2021-03-30 | 深圳陶陶科技有限公司 | Atomizing core and electron cigarette |
| JP7357792B2 (en) * | 2020-06-30 | 2023-10-06 | 日本たばこ産業株式会社 | Non-combustion suction device |
| CN112315027A (en) * | 2020-08-31 | 2021-02-05 | 深圳麦克韦尔科技有限公司 | Electronic atomization device and atomizer and atomization core thereof |
| CN114532607A (en) * | 2020-11-24 | 2022-05-27 | 深圳雾芯科技有限公司 | Atomizing core reaches atomizer and electron cigarette including it |
| CN215422803U (en) * | 2021-03-15 | 2022-01-07 | 比亚迪股份有限公司 | Atomizing core, atomizing device and electron cigarette |
| CN215224787U (en) * | 2021-04-26 | 2021-12-21 | 东莞市国研电热材料有限公司 | Micropore ceramic heating element |
| CN216088844U (en) * | 2021-06-15 | 2022-03-22 | 深圳哈珀生物科技有限公司 | Electronic atomization device and atomizer and atomization core thereof |
| CN216088845U (en) * | 2021-06-15 | 2022-03-22 | 深圳哈珀生物科技有限公司 | Atomizing core, atomizer and electronic atomization device thereof |
| CN215736884U (en) * | 2021-07-26 | 2022-02-08 | 比亚迪精密制造有限公司 | Electronic cigarette atomization assembly and electronic cigarette |
| CN215992753U (en) * | 2021-08-31 | 2022-03-11 | 常州市派腾电子技术服务有限公司 | Atomizing core, atomizer and aerosol generating device |
| CN114451585A (en) * | 2021-12-22 | 2022-05-10 | 深圳雪雾科技有限公司 | Atomizing core, preparation method thereof, atomizer and electronic atomizing device |
| CN114468397A (en) * | 2022-02-10 | 2022-05-13 | 刘松青 | Preparation method of porous ceramic atomizing core with high adaptability |
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2022
- 2022-06-06 CN CN202210631709.6A patent/CN117223908A/en active Pending
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- 2023-02-21 WO PCT/CN2023/077343 patent/WO2023236585A1/en unknown
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- 2023-06-05 US US18/328,794 patent/US20230389609A1/en active Pending
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| EP4289296A1 (en) | 2023-12-13 |
| WO2023236585A1 (en) | 2023-12-14 |
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