CN218921703U

CN218921703U - Heating atomizing structure and electronic atomizer

Info

Publication number: CN218921703U
Application number: CN202223053802.8U
Authority: CN
Inventors: 陈家太; 周胜文; 黄先培
Original assignee: Shenzhen Smiss Technology Co Ltd
Current assignee: Shenzhen Smiss Technology Co Ltd
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-04-28
Anticipated expiration: 2032-11-16

Abstract

The utility model discloses a heating atomization structure and an electronic atomizer, wherein the heating atomization structure comprises a liquid absorbing body made of porous ceramics, a hollow cavity penetrating through the liquid absorbing body is axially arranged on the liquid absorbing body, and a foam metal layer or a foam metal circuit serving as a heating body is combined on the inner wall of the hollow cavity. The utility model adopts foam metal to be uniformly attached on the inner wall of the hollow cavity of the porous ceramic body, so as to solve the problems of unstable combination of the heating element and the liquid absorption body, uneven heating temperature and the like; and the foam metal has excellent thermal properties such as high heat conductivity coefficient, high heat exchange area, heat enhancement characteristic, high porosity and the like, and can improve the heating and atomizing efficiency of the heating and atomizing structure.

Description

Heating atomizing structure and electronic atomizer

Technical Field

The utility model relates to the technical field of electronic cigarettes, in particular to a heating atomization structure and an electronic atomizer.

Background

At present, with the gradual popularization of heating and atomizing equipment such as medical atomizers, tobacco tar, perfume and the like, the market demand for the heating and atomizing equipment is increasing. Among them, ceramic heating atomization structures are widely used in such types of products as water replenishing instruments, electronic cigarettes, aromatherapy devices, and the like. The existing ceramic heating atomization structure is generally characterized in that a resistance heating wire is embedded in the ceramic, so that the problem of infirm combination with the ceramic exists. In addition, in the heating and atomizing process of the ceramic, the thickness of an effective heating and atomizing working surface is within 50 mu m, and a heating wire used at present is basically in the millimeter (0.1-0.3 mm) level, and is uneven in combination with the ceramic, so that uneven oil immersion is caused, and the uneven heating temperature distribution can further influence the particle size of atomized steam and uneven atomizing components. Even harmful substances appear due to uneven temperature, and hidden danger exists for human health. For example, patent (CN 216393065U) discloses an electronic cigarette and heating filament assembly thereof, the heating element body includes ceramic body and buries in the inside metalwork of ceramic body, the both ends of metalwork respectively are equipped with a pin, metalwork and pin can select for use stainless steel heating filament, titanium heating filament, nickel heating filament or the heating filament of other materials, for example copper wire or ferrochrome wire, the diameter of heating filament can be 0.3mm, be greater than effectual heating atomizing working face thickness far, there is the uneven problem of combining height with ceramic, the uneven immersion oil influences the atomizing steam particle diameter, reduce user's suction taste.

Disclosure of Invention

In view of the above, the present utility model aims to provide a heating atomization structure and an electronic atomizer, which adopt foam metal to be uniformly attached on the inner wall of a hollow cavity of a porous ceramic body, so as to solve the problems of unstable combination of a heating element and a liquid absorption body, uneven combination, uneven heating temperature, etc.; and the foam metal has excellent thermal properties such as high heat conductivity coefficient, high heat exchange area, heat enhancement characteristic, high porosity and the like, and can improve the heating and atomizing efficiency of the heating and atomizing structure.

The utility model provides a heating atomization structure, which comprises a liquid absorbing body made of porous ceramics, wherein a hollow cavity penetrating through the liquid absorbing body is arranged on the liquid absorbing body along the axial direction, and a foam metal layer or a foam metal circuit serving as a heating body is combined on the inner wall of the hollow cavity.

Further, the metal foam layer is bonded to the entire inner wall of the hollow cavity.

Further, a first porous ceramic layer is arranged on the inner side of the heating body, and/or a second porous ceramic layer is arranged on the outer wall of the liquid suction body, the permeability of the second porous ceramic layer is larger than that of the liquid suction body, and the thickness of the first porous ceramic layer is smaller than that of the liquid suction body.

Further, the metal foam wire is bonded to only a portion of the inner wall of the hollow cavity.

Further, the foam metal line is formed into a zigzag structure or a net structure formed by interweaving and connecting a plurality of hollow nodes.

Further, the liquid suction body is a hollow cylinder, a prism, a truncated cone or a truncated pyramid, and the cross section of the hollow cavity is circular or polygonal.

Further, two wires are welded at the top end or the bottom end of the heating body.

Further, the average wall thickness of the liquid absorption body is 1-2mm, and the average thickness of the heating body is less than 50 mu m.

Further, the heating element is combined on the inner wall of the liquid-absorbing hollow cavity in a sintering mode.

The utility model also provides an electronic atomizer which comprises the heating atomization structure.

The utility model has the beneficial effects that: the heating body made of foam metal is integrated on the inner wall of the liquid-absorbing hollow cavity made of the porous ceramic body, the foam metal is uniform in thickness and controllable in thickness, and the problems that the original resistance heating wire is embedded in the ceramic, the combination with the ceramic is unstable, the combination level is uneven and the heating temperature is uneven can be solved. Meanwhile, the foam metal has a rich pore structure, is favorable for liquid permeation, can ensure that the heating atomization structure is fully supplied with liquid in the heating and atomizing processes, is uniform in liquid distribution, reduces the problem of uneven oil immersion, ensures uniform particle size of atomized steam, and improves the suction taste of users.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1a is a perspective view of a heating atomizing structure according to an embodiment of the present disclosure;

FIG. 1b is a cross-sectional view of FIG. 1a along the axial direction;

FIG. 1c is a top view of FIG. 1 a;

FIG. 2a is a perspective view of a heating atomizer structure according to another embodiment of the present utility model;

FIG. 2b is a cross-sectional view of FIG. 2a along the axial direction;

FIG. 2c is a top view of FIG. 2 a;

FIG. 3a is a perspective view of a heating atomizer structure according to another embodiment of the present utility model;

FIG. 3b is a cross-sectional view of FIG. 3a along the axial direction;

FIG. 3c is a top view of FIG. 3 a;

FIG. 4a is a perspective view of a heating atomizer structure according to another embodiment of the present utility model;

FIG. 4b is a cross-sectional view of FIG. 4a along the axial direction;

FIG. 5a is a perspective view of a heating atomizer structure according to another embodiment of the present utility model;

FIG. 5b is a cross-sectional view of FIG. 5a along the axial direction;

FIG. 6 is a perspective view of a heating atomizer structure according to another embodiment of the present utility model;

FIG. 7a is a perspective view of a heating atomizer structure according to another embodiment of the present utility model;

FIG. 7b is a cross-sectional view of FIG. 7a along the axial direction;

fig. 8 is a perspective view of a heating atomizer structure according to another embodiment of the present utility model.

Detailed Description

Specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms described above will be understood to those of ordinary skill in the art in a specific context.

The terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," and the like are used as references to orientations or positional relationships based on the orientation or positional relationships shown in the drawings, or the orientation or positional relationships in which the inventive product is conventionally disposed in use, merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore are not to be construed as limiting the utility model.

The terms "first," "second," "third," and the like, are merely used for distinguishing between similar elements and not necessarily for indicating or implying a relative importance or order.

The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a list of elements does not include only those elements but may include other elements not expressly listed.

The ceramic heating atomizer of hollow cavity type is generally heated in the internal hole, atomizes, and the atomizing steam that produces flows outwards along ceramic body hole, and ceramic body external surface need with bearing structure intensive contact guarantee that liquid transmission is normal, also can prevent the weeping simultaneously. Therefore, the integration of foam metal on the outer surface of the hollow cavity type ceramic heating and atomizing device can influence the heating and atomizing working state. As shown in fig. 1, the utility model provides a heating atomization structure, which comprises a liquid absorbing body 1 made of porous ceramic, wherein a hollow cavity 11 penetrating through the liquid absorbing body 1 is arranged on the liquid absorbing body 1 along the axial direction, and a foam metal layer or a foam metal circuit serving as a heating body 2 is combined on the inner wall of the hollow cavity 11. According to the utility model, the foam metal is integrated in the inner hole of the ceramic body, so that the problems of unstable combination of the metal heating wire and the ceramic, uneven heating temperature and the like can be solved, and the normal heating and atomizing work of the ceramic heating and atomizing structure can not be influenced. The heating body 2 made of foam metal is integrated on the inner wall of the hollow cavity of the liquid absorbing body 1, the thickness of the foam metal is uniform and controllable, a foam metal heating film is formed, and the problems that the original ceramic is embedded with a resistance heating wire, the combination with the ceramic is unstable and the heating temperature is uneven can be solved. Furthermore, the foam metal has excellent thermal properties such as high heat conductivity coefficient, high heat exchange area, heat enhancement characteristic, high porosity and the like, and the efficiency of ceramic heating and atomizing can be improved by integrating the foam metal serving as a heating film with a ceramic body. After the foam metal is integrated on the ceramic surface, the foam metal is required to be baked at high temperature, so that the foam metal is ensured to be firmly adhered on the ceramic surface. Still further, foam metal self has abundant pore structure, is favorable to the infiltration of liquid, can guarantee the abundant liquid supply of heating atomizing structure in heating atomizing process, and liquid distribution is even, reduces the uneven problem of immersion oil, guarantees that atomizing steam particle diameter is even, improves user's suction taste.

As an embodiment, as shown in fig. 1a to 3c, a metal foam layer is bonded to the entire inner wall of the hollow chamber 11 to form a metal foam heat generating film. As shown in fig. 1a and 3a, a heat generating film is formed on a cylindrical wall surface; as shown in fig. 2a, a heat generating film is formed on a polygonal column-shaped wall surface.

As an embodiment, as shown in fig. 8, the first porous ceramic layer 4 is provided inside the heat generating body 2 and/or the second porous ceramic layer 5 is provided on the outer wall of the liquid absorbing body 1, the permeability of the second porous ceramic layer 5 is larger than that of the liquid absorbing body 1, and the thickness of the first porous ceramic layer 4 is smaller than that of the liquid absorbing body 1. Specifically, by providing the first porous ceramic layer 4 inside the heat-generating body 2, the heat-generating body 2 is more tightly adhered between the first porous ceramic layer 4 and the liquid-absorbing body 1, the possibility of falling off of the heat-generating body 2 is further reduced, and the reliability of the device is improved. Further, through setting up second porous ceramic layer 5 at the outer wall of imbibition body 1, and the permeability of second porous ceramic layer 5 is greater than the permeability of imbibition body 1 for the tobacco tar can pass second porous ceramic layer 5, imbibition body 1's hole in proper order, and atomizing forms the aerosol after being heated with heat-generating body 2 contact, supplies the user to aspirate. The process of wrapping the oil absorbing cotton on the periphery of the liquid absorbing body 1 in the prior art is omitted, the cost of the oil absorbing cotton and the labor cost of manual wrapping are saved, the production cost is greatly reduced, the assembly efficiency is improved, and the economic benefit is better.

As an embodiment, as shown in fig. 4a to 7b, the metal foam wire is bonded to only a part of the inner wall of the hollow cavity 11.

Specifically, the metal foam wires may form a zigzag structure on the inner wall of the hollow cavity 11. As shown in fig. 4a and 5a, regular folding lines are formed on the inner wall of the hollow cavity 11 along the axial and radial directions; as shown in fig. 6, a spiral fold line structure is formed on the inner wall of the hollow chamber 11; alternatively, the metal foam wires may form a mesh structure on the inner wall of the hollow chamber 11, which is interweaved by a plurality of hollow nodes 21, as shown in fig. 7a and 7 b.

As an embodiment, the liquid absorbing body 1 is a hollow cylinder, a prism, a truncated cone, or a truncated pyramid. As shown in fig. 1a, 4a, 5a and 6, the liquid absorbing body 1 is a hollow cylinder; as shown in fig. 2a, the liquid-absorbing body 1 is a hollow prism; as shown in fig. 3a, the liquid absorbing body 1 is a hollow truncated cone; the embodiment of the suction body 1 as a hollow prismatic table is not shown. As shown in fig. 1a and 2a, the cross section of the hollow cavity 11 is circular or polygonal, in particular cylindrical or prismatic. Of course, the hollow cavity 11 may be formed in a gradual deformation, specifically a truncated cone shape, as shown in fig. 6.

As an embodiment, as shown in fig. 1a, two wires 3 are welded to the tip of the heating element 2; of course, two wires 3 may be welded to the bottom end of the heating element 2.

As one embodiment, the average wall thickness of the liquid-absorbing body 1 is 1-2mm, and the average thickness of the heat-generating body 2 is less than 50 μm. Further, the thickness of the heating element 2 may be 20 μm, 30 μm, or 40 μm. The heating body 2 made of foam metal is uniformly integrated in the inner hole of the ceramic body, the thickness is uniform and is controlled within 50 mu m, the thickness of an effective heating and atomizing working surface of the ceramic atomizing heating structure is within 50 mu m, and the foam metal can be just uniformly soaked in liquid, so that the optimal heating and atomizing effect is achieved.

As an embodiment, the heating element 2 is bonded to the inner wall of the hollow cavity 11 of the liquid absorbing body 1 by sintering. Foam metal is integrated on the ceramic body through high-temperature roasting, so that the foam metal heating body and the ceramic can be firmly combined, the foam metal heating body is ensured to be always attached to the surface of the ceramic, and the phenomenon of uneven heating temperature can not occur.

The heating atomization structure of the utility model adopts a special preparation process to uniformly attach foam metal on the surface of a ceramic body, and the specific preparation process technology and steps are as follows:

preparing a material: comprises a support body, metal slurry and ceramic slurry, and the specific preparation process is as follows:

(1) Preparing a support: the shape of the support body can be a solid cylinder or a square cylinder, wherein the support body is made of organic solid, such as plastic, wood, cotton column, composite organic matter, natural organic matter and the like;

(2) Preparing metal slurry: weighing a proper amount of metal powder, organic matters and ceramic powder, placing the weighed materials into a ball milling tank, and uniformly mixing the metal powder, the organic matters and the ceramic powder by adopting a ball milling process to prepare the metal slurry. Wherein the metal powder can be stainless steel, nickel, molybdenum, tungsten and the like, the organic matters can be polyethersulfone, N-methyl-1-pyrrolidone and the like, and the ceramic powder can be alumina and the like;

(3) Preparing ceramic slurry: weighing a proper amount of organic matters and ceramic powder, placing the weighed materials into a ball milling tank, and uniformly mixing the organic matters and the ceramic powder by adopting a ball milling process to prepare ceramic slurry. Wherein the organic matter can be polyethersulfone, N-methyl-1-pyrrolidone, etc., and the ceramic powder can be alumina, silica, zirconia, etc.;

step two, a green body forming method and a preparation flow are as follows:

(1) Firstly, coating a layer of metal slurry on a support body, wherein the coating thickness is controlled according to the resistance value;

(2) Secondly, a layer of ceramic slurry is coated on the basis of the step (1), and the thickness is 1-2mm (controlled according to the requirement of an atomization core);

(3) The "coating" may be coating, casting with a mold, extrusion molding, or the like; when the inner side of the heating body 2 is provided with a first porous ceramic layer 4 and/or the outer wall of the liquid absorbing body 1 is provided with a second porous ceramic layer 5, the materials are sequentially coated according to actual requirements;

the three-phase transformation technology is used for pore-forming, and the specific method is as follows:

immersing the molded blank body into purified water for phase inversion pore-forming and solidification, and then pumping out the support body;

and step four, glue discharging and sintering processes:

(1) Placing the prepared blank into a glue discharging furnace for glue discharging treatment, wherein the glue discharging temperature is 500-700 ℃ and the glue discharging time is 1-4 hours;

(2) Sintering the ceramic blank after glue discharging in atmosphere or vacuum to obtain a main body of a tubular heating atomization structure, wherein the sintering temperature is 1000-1400 ℃ and the sintering time is 1-4 hours;

step five: and welding contacts or pins on the sintered tubular heating atomization structure to form a tubular heating atomization structure finished product.

The beneficial effects of the utility model include:

(1) The foam metal heating body is uniformly integrated in the inner hole of the ceramic body, the thickness is uniform, the thickness can be controlled within 50 microns, the thickness of an effective heating atomization working surface of the ceramic heating body is within 50 microns, and the foam metal can be completely and uniformly infiltrated in smoke liquid, so that the optimal heating atomization effect is achieved;

(2) The foam metal heating element is integrated on the ceramic body and needs to be roasted at high temperature, so that the combination firmness of the foam metal heating element and the ceramic body is improved, the foam metal heating element is ensured to be always attached to the inner wall of the hollow cavity 11 of the ceramic body, and the phenomenon of uneven heating temperature can not occur;

(3) Foam metal has high coefficient of heat conductivity, heat enhancement characteristic, high-efficient preheating effect, and promotion heating atomization efficiency that can be very big has developed pore structure simultaneously, and assurance heating atomizing face liquid guide that can be abundant supplies, and liquid distribution is even, reduces the uneven problem of immersion oil, guarantees that atomizing steam particle diameter is even, improves user's suction taste.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the present utility model. Accordingly, the scope of the utility model should be assessed as that of the appended claims.

Claims

1. The utility model provides a heating atomizing structure, includes liquid absorbing body (1) of being made by porous ceramic, its characterized in that, liquid absorbing body (1) are equipped with along the axial and run through hollow cavity (11) of liquid absorbing body (1), the foam metal layer or the foam metal circuit of heat-generating body (2) have been combined on the inner wall in hollow cavity (11).

2. A heating atomisation structure according to claim 1, characterised in that the metal foam layer is bonded to the whole inner wall of the hollow cavity (11).

3. A heating and atomizing structure according to claim 2, characterized in that a first porous ceramic layer (4) is provided on the inner side of the heating element (2) and/or a second porous ceramic layer (5) is provided on the outer wall of the liquid absorbing body (1), the permeability of the second porous ceramic layer (5) is larger than that of the liquid absorbing body (1), and the thickness of the first porous ceramic layer (4) is smaller than that of the liquid absorbing body (1).

4. A heating atomising structure according to claim 1 wherein the metal foam wire is bonded to only part of the inner wall of the hollow cavity (11).

5. A heating atomizing structure according to claim 4, characterized in that the metal foam wire is formed in a zigzag structure or a mesh structure formed by interlacing a plurality of hollow nodes (21).

6. A heating and atomising structure according to claim 1, characterized in that the liquid absorbing body (1) is a hollow cylinder, a prism, a truncated cone or a truncated pyramid, and the cross section of the hollow cavity (11) is circular or polygonal.

7. A heating and atomizing structure according to claim 1, characterized in that two wires (3) are welded to the top or bottom end of the heating element (2).

8. A heating and atomizing structure according to claim 1, characterized in that the average wall thickness of the liquid absorbing body (1) is 1-2mm, and the average thickness of the heating body (2) is less than 50 μm.

9. A heating and atomizing structure according to claim 1, characterized in that the heating element (2) is bonded to the inner wall of the hollow cavity (11) of the liquid absorbing body (1) by sintering.

10. An electronic atomizer comprising a heated atomizing structure according to any one of claims 1 to 9.