WO2021046905A1 - Atomizer provided with multiple heating passages - Google Patents

Abstract

An atomizer provided with multiple heating passages. The atomizer comprises: a positive electrode (2), a negative electrode (3), heating lines (4) and a circuit bearing body (1), wherein the positive electrode (2), the negative electrode (3) and the heating lines (4) are arranged on the circuit bearing body (1); the heating lines (4) are electrically connected between the positive electrode (2) and the negative electrode (3); there are multiple heating lines (4); the multiple heating lines (4) are connected between the two electrodes in an intersecting or non-intersecting manner, so as to form a closed communication area; and the closed communication area forms a heating area. Due to the electrical competitiveness between the various heating lines, a more uniform temperature distribution is obtained. By means of slots being formed on the circuit bearing body, the atomization effect and the atomization amount are improved.

Description

Multi-heating channel atomizer Technical field

The invention relates to the technical field of electronic cigarettes, and in particular to a multi-heating path atomizer applied to electronic cigarettes.

Background technique

An electronic cigarette is an electronic product that imitates cigarettes. It converts nicotine into steam through atomization and other means for users to smoke, so as to achieve functions similar to traditional cigarettes. The existing electronic cigarettes mainly include: battery components, atomizers, etc., wherein the atomizer can atomize the stored cigarette liquid for users to inhale under the power of the battery components. In this way, the problem of simultaneous release of harmful substances such as tar and carbon monoxide when traditional cigarettes are burned is overcome.

However, when the porous ceramics for storing e-liquid in the existing electronic cigarette vaporizers are heated, there is a problem that the e-liquid is not fully heated, resulting in a waste of e-liquid. In addition, in order to realize the heating function of the atomizer, the existing electronic cigarette atomizer is provided with a heating circuit, but when a part of the circuit is damaged, this heating circuit will be scrapped. Therefore, it is necessary to propose further solutions to the above-mentioned problems.

Summary of the invention

The present invention aims to provide a multi-heating path atomizer and electronic cigarette to overcome the deficiencies in the prior art.

In order to solve the above technical problems, the technical solution of the present invention is:

A multi-heating path atomizer, which includes: a positive electrode, a negative electrode, a heating circuit and a circuit carrier;

The positive electrode, the negative electrode, and the heating circuit are arranged on the circuit carrier;

The heating circuit is electrically connected between the positive electrode and the negative electrode, the number of the heating circuit is M, M≥2, and each heating circuit has L intersections, L≥0;

The positive and negative electrodes and the heating circuit constitute a closed connection area, each closed connection area constitutes a heating area, there is no circuit in the heating area, and the number of the heating areas is N, N=M+L-1;

The circuit carrier is an insulator with dense pore channels so that liquid can penetrate into the heating area through the pore channels;

At least one low liquid flow resistance channel area is provided on the circuit carrier, and the low liquid flow resistance channel area corresponds to the heating area, so that the resistance of liquid entering the heating area is smaller than the resistance of entering other areas.

As an improvement of the multi-heating path atomizer of the present invention, the L≥1.

As an improvement of the multi-heating path atomizer of the present invention, the material of the circuit carrier is selected from ceramics, crystals, glass, or their mixtures.

As an improvement of the multi-heating path atomizer of the present invention, the low liquid flow resistance channel area is an oil guide groove and/or an oil guide hole opened on the circuit carrier, and the oil guide groove and/or oil guide hole It may be filled with a material with higher porosity, and the extension direction of the oil guide groove and/or the oil guide hole is kept perpendicular to the surface where the heating circuit is located.

As an improvement of the multi-heating path atomizer of the present invention, the depth of the oil guide groove is 10%-90% of the thickness of the circuit carrier.

As an improvement of the multi-heating path atomizer of the present invention, the material of the heating circuit is selected from one of silver, nickel, chromium, platinum, palladium, ruthenium, iron, and gold, or an alloy formed by them.

As an improvement of the multi-heating path atomizer of the present invention, the square resistance of any one of the heating circuits is 50-500Ω/sq.

As an improvement of the multi-heating path atomizer of the present invention, the heating circuit uses a positive temperature coefficient of resistance material.

As an improvement of the multi-heating path atomizer of the present invention, the positive temperature resistivity is 100-3000 ppm/°C.

As an improvement of the multi-heating path atomizer of the present invention, when there are two heating circuits, the two heating circuits do not intersect.

As an improvement of the multi-heating-path atomizer of the present invention, when there are two heating circuits, the two heating circuits intersect and are arranged in a "8" shape.

As an improvement of the multi-heating path atomizer of the present invention, when there are more than three heating circuits, each heating circuit forms a network structure.

Compared with the prior art, the beneficial effect of the present invention is that there are multiple heating circuits in the present invention, and the multiple heating circuits are connected between the two electrodes in an intersecting or disjoint manner, so as to form a closed communication area. , Each closed communication area constitutes a heating area that plays a role of atomization heating.

The intersecting or non-intersecting connection between multiple heating lines increases the reliability of the line, so that when one or several lines are damaged, the lines are still connected and still have the function of heating and atomizing. And due to the power competition between the heating circuits, the heating is more uniform and symmetric, and thus a more uniform temperature distribution is obtained.

In the present invention, the circuit carrier is slotted, so that the liquid stored in the circuit carrier can be led to the high temperature area with actual atomization ability in the shortest distance, and will not damage the mechanical structure of the circuit carrier and the heating resistance. Function, which in turn improves the atomization effect and the amount of atomization.

The present invention adopts the positive temperature coefficient of resistance material, so that when the temperature of a heating circuit is slightly higher, by increasing the resistance, reducing the branch current, and then automatically reducing the heating, and finally achieving uniform heating.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments described in the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

Fig. 1 is a top view of an embodiment of the multi-heating path atomizer of the present invention, in which the distance between two heating lines gradually increases and then gradually decreases, and the oil guide groove is a rectangular groove;

Figure 2 is a top view of another embodiment of the multi-heating path atomizer of the present invention, in which the distance between two heating circuits gradually increases and then gradually decreases, and the oil guide groove is a rectangular groove;

Figure 3 is a cross-sectional view of the multi-heating channel atomizer of the present invention;

Figure 4 is a top view of another embodiment of the multi-heating path atomizer of the present invention, in which two heating circuits are kept parallel;

Figure 5-1 is a top view of another embodiment of the multi-heating path atomizer of the present invention, in which the shape of the heating circuit is roughly M-shaped, and the low liquid flow resistance channel area is a radial cross section set in the middle of the heating area A circular area;

Figure 5-2 is a top view of another embodiment of the multi-heating path atomizer of the present invention, in which the shape of the heating circuit is roughly M-shaped, and the low liquid flow resistance channel areas are radially arranged on both sides of the heating area. Areas with circular cross-sections;

Fig. 6 is a top view of another embodiment of the multi-heating-path atomizer of the present invention, in which two heating lines intersect and are arranged in an "8" shape;

Fig. 7 is a top view of another embodiment of the multi-heating path atomizer of the present invention, in which each heating circuit forms a network structure, and there are a plurality of oil guide holes;

Fig. 8 is a top view of another embodiment of the multi-heating-path atomizer of the present invention, in which each heating circuit forms a network structure, and there is one oil guide hole.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

As shown in FIGS. 1-3, the multi-heating path atomizer of the present invention includes: a circuit carrier 1, a positive electrode 2, a negative electrode 3, and a heating circuit 4. The positive electrode 2, the negative electrode 3, and the heating circuit 4 are arranged on the circuit carrier 1, and the heating circuit 4 is electrically connected between the positive electrode 2 and the negative electrode 3.

In an exemplary embodiment, the circuit carrier 1 is used as the main structure of the multi-heating path atomizer, and its shape is a rectangular parallelepiped or a shape similar to a rectangular parallelepiped or a cylinder, or other polyhedral shapes.

In an exemplary embodiment, the material of the circuit carrier 1 may be an insulator, and the insulator portion is formed with densely-spaced oil storage holes and/or liquid storage channels, by means of which the oil storage holes and/or the liquid storage channels can store Smoke oil, thereby avoiding additional smoke bombs. In this embodiment, the material of the circuit carrier 1 is selected from ceramics, crystals, glass, or their mixtures.

When the circuit carrier 1 is a porous ceramic, the circuit carrier 1 is selected from one of oxides, nitrides and carbides. Wherein, the oxide is selected from one of aluminum oxide, silicon oxide, zirconium oxide, calcium oxide, titanium oxide, magnesium oxide, etc.; the nitride is selected from silicon nitride, aluminum nitride, and titanium nitride. One; the carbide is silicon carbide and the like.

In order to facilitate the conduction of e-liquid, at least one channel area 11 with low liquid flow resistance is provided on the circuit carrier 1. The low liquid flow resistance channel area 11 corresponds to the heating area formed by the heating circuit 4, so that the resistance of the e-liquid entering the corresponding heating area is smaller than the resistance of entering other areas. The shape of the low liquid flow resistance channel region 11 can be set according to actual requirements.

Since the oil conduction rate is directly proportional to the temperature difference, that is, the temperature difference between the heating area and the circuit carrier 1 is inversely proportional to the transmission distance of the liquid through the circuit carrier 1 to the heating area. Therefore, grooving is conducive to oil conduction. 0% slotting depth is equal to double the oil guide speed. Especially when the atomization speed is relatively high, the oil conduction rate must match it, otherwise it will cause dry burning problems.

In an exemplary embodiment, the low liquid flow resistance channel region 11 is an oil guide groove and/or an oil guide hole opened on the circuit carrier 1. Wherein, the structural feature of the oil guide groove is a structure with a radial shape of a strip or a similar shape, and the structural feature of the oil guide hole is a structure with a radial shape of a circle or an ellipse or a similar shape.

The oil guide groove and/or the oil guide hole should be arranged in an area that does not interfere with the heating circuit 4. In this way, during the atomization heating, the e-liquid stored in the circuit carrier 1 gradually converges and flows into the oil guide groove and/or the oil guide hole through the oil storage hole, so as to realize the concentrated heating of the e-liquid and overcome the insufficient heating of the e-liquid The problem.

Preferably, the depth of the oil guide groove and/or the oil guide hole is 10%-90% of the thickness of the circuit carrier 1. Alternatively, the depth of the oil guide groove and/or the oil guide hole is 30%-60% of the depth of the circuit carrier 1. For example, when the thickness of the circuit carrier 1 is 2 mm, the corresponding depth of the oil guide groove and/or the oil guide hole is 0.6-1.2 mm.

In order to further improve the oil guiding effect of the low liquid flow resistance channel region 11, the oil guiding groove and/or the oil guiding hole and/or the oil guiding hole may be filled with a material 12 with a higher porosity. At the same time, the extension direction of the oil guide groove and/or the oil guide hole and/or the oil guide hole is kept perpendicular to the surface where the heating circuit 4 is located, so as to ensure the shortest stroke of the oil guide path.

Because the heating circuit 4 is arranged on the circuit carrier 1, and the heating circuit 4 is electrically connected between the positive electrode 2 and the negative electrode 3. When the heating circuit 4 is working, a heating area is formed on the circuit carrier 1. The oil guide groove and/or the oil guide hole are opened at the position where the heating area is located. In this way, the oil can be guided to the area that actually has the atomization ability to the greatest extent, while the porous ceramic mechanical structure and the function of bearing the heating resistance are not damaged, and the atomization effect and the amount of atomization are improved. The specific shape and combination of the oil guide groove and/or the oil guide hole can be flexibly set according to the position of the heating area.

In an exemplary embodiment, the oil guide groove and/or the oil guide hole are sintered and formed integrally with the circuit carrier 1 by means of a mold, or the oil guide groove and/or the oil guide hole is sintered and formed in the circuit carrier 1 After that, it is formed by forming. Wherein, the forming processing includes: mechanical processing, laser processing, plasma processing and the like. This embodiment can be combined with the above-mentioned embodiments, that is, formed by integral sintering with the circuit carrier 1, or, after the circuit carrier 1 is sintered and formed, the oil guide groove and/or the oil guide hole are formed by forming In the manner of formation, the oil guide groove and/or the oil guide hole in the foregoing embodiments are formed.

The relationship between the depth of the slot/hole and the amount of atomization is demonstrated below.

Select the circuit carrier 1 with a size of 9x3x2mm in length, width and thickness, and a slot/hole radius of 1mm. The heating power is 6 watts. Select the same liquid, the data relationship between the average atomization amount and the groove depth is shown in the following table:

Slotting/hole depth (mm)	Atomization amount (μl/s)
0	0.9

0.3	1.1
0.5	1.3
0.8	1.6
1.0	2.0
1.3	2.5
1.5	3.2

It can be seen that through slotting/holes, and with the increase of slots/holes, it is beneficial to improve the atomization effect.

The positive electrode 2, the negative electrode 3, and the heating circuit 4 are arranged on the circuit carrier 1, and the heating circuit 4 is electrically connected between the positive electrode 2 and the negative electrode 3.

Specifically, the number of heating circuits 4 is M, M≥2, and there are L intersections between each heating circuit 4, and L≥0. Preferably, said L≥1. That is, the solution in which the heating circuit 4 has at least one intersection is a preferred solution. The positive and negative electrodes 3 and the heating circuit 4 constitute a closed connection area, each closed connection area constitutes a heating area, there is no circuit in the heating area, the number of the heating area is N, N=M+L-1 . In this way, a plurality of heating lines 4 are connected between the two electrodes in an intersecting or disjoint manner to form a closed communication area, and each closed communication area constitutes a heating area that functions as an atomizing heating.

At the same time, the intersecting or non-intersecting connection between multiple heating lines 4 also increases line reliability. That is, when one or several of them are damaged, the lines are still connected and still have the function of heating and atomizing. Moreover, due to the power competition among the heating circuits 4, the heating is more uniform and symmetric, and thus a more uniform temperature distribution is obtained. Specifically, the temperature uniformity of the heating zone can reach <20°C. Preferably, it can reach <5°C.

In an exemplary embodiment, the material of the heating circuit 4 is selected from one of silver, nickel, chromium, platinum, palladium, ruthenium, iron, and gold, or an alloy formed by them.

In addition, in order to make the heating circuit 4 better realize uniform heating, the heating circuit 4 may also use a positive temperature coefficient of resistance material. The positive temperature resistivity is preferably 100-3000 ppm/°C. In this way, by adopting the positive temperature coefficient of resistance material, when the temperature of the heating circuit is slightly higher, by increasing the resistance, reducing the branch current, and then automatically reducing the heating, and finally achieving uniform heating.

In an exemplary embodiment, any heating circuit 4 is a straight line, an arc shape, or a combination of a straight line and an arc line, and the specific shape can be set according to actual layout requirements.

In an exemplary embodiment, the width of any heating circuit 4 along its extension direction remains unchanged, or gradually becomes smaller, and the latter gradually increases, or first decreases and then increases, or first increases and then decreases, Or reduce and increase the cycle change. That is, the width of the heating line 4 is not particularly limited.

In an exemplary embodiment, the resistance values of any two heating circuits 4 are the same or different. The difference in resistance value can be realized by the difference in the shape of the heating circuit 4 or the difference in the material. The square resistance of any heating circuit 4 is 50-500Ω/sq.

In an exemplary embodiment, any heating circuit 4 is arranged on the circuit carrier 1 by printing and sintering, vacuum coating, or mechanical bonding.

In the following, in conjunction with several specific embodiments, an example of the arrangement of the heating circuit 4 will be described.

As shown in FIGS. 1-2 and 4, in one embodiment, when there are two heating circuits 4, the two heating circuits 4 do not intersect each other. In this embodiment, the heating circuit 4 can be a straight line or an arc line. Correspondingly, the two heating circuits 4 between the positive electrode 2 and the negative electrode 3 are kept parallel, and the distance between the latter is Gradually increase first, then gradually decrease.

As shown in Figures 5-1 and 5-2, in one embodiment, when there are two heating circuits 4, the two heating circuits 4 do not intersect each other. In this embodiment, the shape of the heating circuit 4 is approximately M-shaped, and the two heating circuits 4 are symmetrically arranged. The heating area is a closed communication area surrounded by two heating circuits 4 and electrodes 2 and 3. The low liquid flow resistance channel area 11 is one or more sub-areas in the heating area.

As shown in FIG. 6, in an embodiment, when there are two heating circuits 4, the two heating circuits 4 intersect and are arranged in a "8" shape. At this time, once there is a short circuit in the heating circuit 4, the current can still be conducted. And when there is a short circuit, the total resistance is reduced by a quarter. At the same time, due to the relatively simple structure of the "8"-shaped heating circuit 4, the shielding area of the circuit carrier 1 is relatively small, which is conducive to the escape of e-liquid after atomization.

As shown in Figures 7 and 8, in one embodiment, when there are more than three heating circuits 4, each heating circuit 4 forms a network structure. In this way, the current has multiple channels connected to the positive and negative electrodes. Therefore, when the resistance of a certain point in the circuit changes greatly, or even short-circuited, the heating circuit 4 can be conducted by other routes, which improves the reliability of the heating circuit 4. In this embodiment, in order to form a network structure, the heating circuit 4 includes: a first heating circuit 41 electrically connected between the positive electrode 2 and the negative electrode 3, and at least one second heating circuit connected to each first heating circuit 41 42. When there are multiple second heating circuits 42, the first heating circuit 41 and the second heating circuit 42 form a network structure.

In summary, there are multiple heating circuits in the present invention, and the multiple heating circuits are connected between the two electrodes in an intersecting or disjoint manner, so as to form a closed communication area, and each closed communication area constitutes a The heating area for atomization heating.

The intersecting or non-intersecting connection between multiple heating lines increases the reliability of the line, so that when one or several lines are damaged, the lines are still connected and still have the function of heating and atomizing. And due to the power competition between the heating circuits, the heating is more uniform and symmetrical, and thus a more uniform temperature distribution can be obtained.

In the present invention, the circuit carrier is slotted, so that the liquid stored in the circuit carrier can be led to the high temperature area with actual atomization ability in the shortest distance, and will not damage the mechanical structure of the circuit carrier and the heating resistance. Features.

The invention adopts the positive resistance temperature coefficient material, so that when the temperature of the heating circuit is slightly higher, by increasing the resistance, reducing the branch current, and then automatically reducing the heating, and finally achieving uniform heating.

For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description, and therefore it is intended to fall within the claims. All changes within the meaning and scope of the equivalent elements of are included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

In addition, it should be understood that although this specification is described in accordance with the implementation manners, not each implementation manner only includes an independent technical solution. This narration in the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole The technical solutions in the various embodiments can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (12)

1. A multi-heating path atomizer, characterized in that, the multi-heating path atomizer includes: a positive electrode, a negative electrode, a heating circuit, and a circuit carrier;

   The positive electrode, the negative electrode, and the heating circuit are arranged on the circuit carrier;

   The heating circuit is electrically connected between the positive electrode and the negative electrode, the number of the heating circuit is M, M≥2, and each heating circuit has L intersections, L≥0;

   The positive and negative electrodes and the heating circuit constitute a closed connection area, each closed connection area constitutes a heating area, there is no circuit in the heating area, and the number of the heating areas is N, N=M+L-1;

   The circuit carrier is an insulator with dense pore channels so that liquid can penetrate into the heating area through the pore channels;

   At least one low liquid flow resistance channel area is provided on the circuit carrier, and the low liquid flow resistance channel area corresponds to the heating area, so that the resistance of liquid entering the heating area is smaller than the resistance of entering other areas.
2. The atomizer with multiple heating paths according to claim 1, wherein the L≥1.
3. The multi-heating path atomizer according to claim 1, wherein the material of the circuit carrier is selected from ceramics, crystals, glass, or their mixtures.
4. The multi-heating path atomizer according to claim 3, wherein the low liquid flow resistance channel area is an oil guide groove and/or an oil guide hole opened on the circuit carrier, and the oil guide groove and /Or the oil guide hole may be filled with a material with higher porosity, and the extension direction of the oil guide groove and/or the oil guide hole is kept perpendicular to the surface where the heating circuit is located.
5. The atomizer with multiple heating paths according to claim 4, wherein the depth of the oil guide groove is 10%-90% of the thickness of the circuit carrier.
6. The multi-heating path atomizer according to claim 1, wherein the material of the heating circuit is selected from one of silver, nickel, chromium, platinum, palladium, ruthenium, iron, and gold, or they are formed from one of silver, nickel, chromium, platinum, palladium, ruthenium, iron, and gold. Alloy.
7. The atomizer with multiple heating paths according to claim 6, wherein the square resistance of any one of the heating circuits is 50-500Ω/sq.
8. The multi-heating path atomizer according to any one of claims 1-7, wherein the heating circuit uses a positive temperature coefficient of resistance material.
9. The atomizer with multiple heating paths according to claim 8, wherein the positive temperature resistivity is 100-3000 ppm/°C.
10. The atomizer with multiple heating paths according to claim 1, wherein when there are two heating circuits, the two heating circuits do not intersect each other.
11. The multi-heating path atomizer according to claim 1, wherein when there are two heating circuits, the two heating circuits intersect and are arranged in a "8" shape.
12. The multi-heating path atomizer according to claim 1, wherein when there are more than three heating circuits, each heating circuit forms a network structure.

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