CN115251473A - Atomizing device, porous atomizing core and manufacturing method of porous atomizing core - Google Patents

Abstract

The invention relates to an atomizing device, a porous atomizing core and a manufacturing method of the porous atomizing core, wherein the manufacturing method of the porous atomizing core comprises the following steps: attaching the heating element to the outer surface of the fixing element, wherein the fixing element is made of high-temperature degradable material, a concave part is arranged on the surface of the fixing element, and the heating circuit is positioned outside the concave part; placing the heating element and the fixing piece into the die cavity, forming a die cavity between the die cavity and the fixing piece, and positioning the heating element in the die cavity; injecting slurry into the cavity to coat the heating element, and removing the cavity after the slurry is solidified to obtain an atomized blank with a fixing piece; sintering the atomized blank, and burning off the fixing piece to obtain the porous atomized core. The heat-generating body is on the mounting, has to support to be difficult to warp, has guaranteed to bury the uniformity of the substrate degree of depth after the sintering, and the taste of smog has been guaranteed to the equilibrium of temperature when also having guaranteed atomizing core heating atomizing medium. After the slurry is sintered and solidified, the fixing piece can be burnt out through the reaction of high temperature and air in a sintering furnace in a sintering high-temperature section.

Description

Atomizing device, porous atomizing core and manufacturing method of porous atomizing core

Technical Field

The invention relates to the field of atomization, in particular to an atomization device, a porous atomization core and a manufacturing method of the porous atomization core.

Background

The electronic atomization device is a device which heats atomized liquid to atomization and evaporation through electric heating to generate aerosol, and is widely applied to the field of electronic atomization at present.

The core of the electronic atomization device is a heating atomization core which mainly comprises a liquid guide material with a porous structure and a heating element, in the field, a planar mesh heating element is wound in a liquid guide cotton material and is applied a lot, but the planar mesh heating element is not applied in the field of porous ceramics, mainly because the strength of the planar mesh heating element is poor, the winding forming is difficult to ensure the forming consistency, and the heating element needs to be placed in a mold and then injected with porous ceramic slurry for sintering forming.

The heating body has poor strength, easy deformation, low efficiency and low yield, so the columnar porous ceramic structure using the reticular heating body needs to be researched, the columnar porous ceramic structure is easy to produce, good in consistency and difficult to deform. High production efficiency and high yield.

Disclosure of Invention

The present invention provides an atomizing device, a porous atomizing core and a method for manufacturing the porous atomizing core, which aims to solve the above-mentioned drawbacks of the prior art.

The technical scheme adopted by the invention for solving the technical problem is as follows: constructing a porous atomizing core, which is characterized by comprising a porous substrate and a heating body;

the heating body comprises a first electrode, a second electrode, at least one heating line connected between the first electrode and the second electrode, and a plurality of supporting parts respectively connected with the heating line;

an atomization surface is formed on the heating body, the atomization surface comprises a support area and an atomization area, and the support area is lower than the atomization area;

the heating circuit is embedded in the atomization zone, the supporting part is embedded in the supporting zone, and the embedding depth of the heating circuit is larger than that of the supporting part.

In some embodiments, the support part and the heating circuit are crossed to form a mesh heating body.

In some embodiments, the heat generating circuit is embedded outside the base material to a depth of 0.1-0.8mm.

In some embodiments, the substrate is provided with an airflow hole for airflow to pass through, the heating element is embedded in an inner wall surface of the airflow hole, the heating circuit is bent along the circumferential direction, the atomizing area and the supporting area are respectively arranged along the circumferential direction, and the inner diameter of the atomizing area is smaller than that of the supporting area.

In some embodiments, the support portion is exposed to the support region.

In some embodiments, the first electrode and the second electrode are located in the substrate, and the porous atomizing core further comprises two leads respectively connected with the first electrode and the second electrode, and the leads are led out of the substrate.

An atomization device comprises an atomizer, and the atomizer comprises the porous atomization core.

The manufacturing method of the porous atomization core comprises the following steps:

attaching the heating element to the outer surface of a fixing piece, wherein the fixing piece is made of high-temperature degradable materials, a concave part is arranged on the surface of the fixing piece, and the heating circuit is positioned outside the concave part;

placing the heating element and the fixing piece into a die cavity, forming a die cavity between the die cavity and the fixing piece, and positioning the heating element in the die cavity;

injecting slurry into the cavity to coat the heating element, and removing the cavity after the slurry is solidified to obtain an atomized blank with the fixing piece;

and sintering the atomization blank, and burning the fixing piece to obtain the porous atomization core.

In some embodiments, the fixing member is in a cylindrical shape, and attaching the heating element to an outer surface of the fixing member further includes:

the heating circuit aligns the depressed part of mounting, the laminating of the supporting part of heat-generating body the outer wall of mounting after, will the heat-generating body curls the shaping and fixes to the mounting.

In some embodiments, the heating lines are arranged at intervals, at least one side of the heating lines is connected with the supporting parts, and a plurality of concave parts respectively corresponding to the supporting parts are distributed on the fixing part at intervals.

In some embodiments, the mold cavity includes a base for the fixing member to be inserted into, and a first mold plate and a second mold plate that are assembled from two sides of the fixing member, at least one of the first mold plate and the second mold plate is provided with a filling port for injecting slurry, and the step of placing the heating element and the fixing member into the mold cavity further includes the steps of:

inserting the fixing piece onto the base, clamping the fixing piece to form the cavity after the first template and the second template are assembled;

and injecting slurry into the cavity from the injection port.

In some embodiments, sintering the atomized blank further comprises the steps of:

and placing the atomized blank in a sintering carrier, covering the atomized blank with the buried burning powder, and sintering.

In some embodiments, the slurry is formed by mixing a ceramic powder, a pore former, and a binder; or the slurry is formed by mixing glass powder, pore-forming agent and binder.

In some embodiments, the adhesive comprises at least one of paraffin, plastic.

In some embodiments, the fixing member is made of at least one of wood, plastic, starch, and plant fiber material.

The implementation of the atomization device, the porous atomization core and the manufacturing method of the porous atomization core has the following beneficial effects: the heating body is arranged on the fixing piece, and the support is not easy to deform. And when the slurry is sintered and solidified, the fixing piece can be burnt out through the reaction of high temperature and air in a sintering furnace when the fixing piece is finally at the high temperature of sintering, such as more than 500 ℃. The placing of the heating body supports and positions the fixing piece, the consistency of the depth of the substrate after sintering is guaranteed, the temperature balance when the atomizing core heats the atomizing medium is also guaranteed, and the taste of smoke is guaranteed.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic perspective view of a porous atomizing core in an embodiment of the present invention;

FIG. 2 is an exploded view of the substrate and the heat-generating body of the porous atomizing core in FIG. 1;

FIG. 3 is a schematic front view of the heat-generating body in FIG. 2 when it is developed;

FIG. 4 is a schematic cross-sectional view of the porous atomizing core of FIG. 1;

FIG. 5 is a schematic cross-sectional view of the porous atomizing core of FIG. 1 in another orientation;

FIG. 6 is a perspective view of the fastener;

FIG. 7 is a perspective view of the heat generating member bent, wrapped and attached to the side of the fixing member;

FIG. 8 is a schematic view of the fixing member with the heat generating member of FIG. 7 before being inserted into the base;

FIG. 9 is a schematic view of the fixing member with the heat generating member of FIG. 6 inserted into the base;

FIG. 10 is a schematic view of the mold cavity prior to clamping of the first and second mold plates;

FIG. 11 is a schematic cross-sectional view of the first and second mold plates after they are closed;

FIG. 12 is a schematic perspective view of an atomized blank with fasteners;

FIG. 13 is a schematic cross-sectional view taken laterally and through the heating circuit of FIG. 12;

fig. 14 is a schematic cross-sectional view of fig. 12 taken laterally and through the support.

Detailed Description

For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in fig. 1, an atomization apparatus in a preferred embodiment of the present invention includes an atomizer, the atomizer includes a porous atomization core 1, a liquid storage cavity, and the like, a liquid atomization medium may be injected into the liquid storage cavity, and the porous atomization core 1 may adsorb the liquid atomization medium, and heat and atomize the adsorbed liquid atomization medium after being electrified.

As shown in fig. 1 to 3, the porous atomizing core 1 includes a porous base material 11 and a heating element 12, the heating element 12 includes a first electrode 121, a second electrode 122, two heating lines 123 connected between the first electrode 121 and the second electrode 122, and a plurality of support portions 124 connected to the heating lines 123, respectively, and the number of the heating lines 123 may be one or plural, and when two or more heating lines 123 are provided, they are spaced from each other.

Preferably, the support portion 124 is connected between two adjacent heating lines 123 to connect the heating lines 123, and the support portion 124 and the heating lines 123 intersect to form the mesh-shaped heating element 12.

As shown in fig. 4 and 5, preferably, the heating element 12 is formed with an atomization surface a, the atomization surface a includes a support region 112 and an atomization region 113, and the support region 112 is lower than the atomization region 113.

The heating circuit 123 is embedded in the base material 11, the supporting portion 124 is embedded in the supporting region 112, and the depth of the embedded heating circuit 123 is greater than that of the embedded supporting portion 124. The heating circuit 123 of the heating element 12 is slightly embedded in the substrate 11, and the embedding depth is larger than that of the supporting part 124, so that the bonding strength of the heating element 12 and the substrate 11 can be ensured, loosening can not occur, and the depth is optimal between 0.1 mm and 0.8mm, so as to achieve better atomization effect.

Referring to fig. 1 to 5, in the present embodiment, the porous atomizing core 1 is mainly composed of two parts, i.e., a porous ceramic base material 11 and a heating element 12 made of a metal material. Wherein the porous ceramic material powder material is formed by injection molding. The heating element 12 is made of a metal sheet, generally having a thickness of 0.03-0.2mm, by forming a heating circuit by etching, laser cutting, punching, etc., and then by welding a lead wire 13, crimping, etc.

Preferably, the first electrode 121 and the second electrode 122 are located in the substrate 11, the porous atomizing core 1 further includes two leads 13 connected to the first electrode 121 and the second electrode 122, respectively, and the leads 13 are led out of the substrate 11, electrically connected to a power supply device, and supply power to the heating element 12.

The heating circuit 123 of the heating element 12 is a core of the heating element 12, and generates heat due to resistance heat effect when power is supplied to electrodes at both ends thereof. The heating line 123 must be in good contact with the porous ceramic substrate 11 to ensure that the heating element 12 is in liquid form and does not produce any aldehydes by dry burning.

The supporting part 124 does not generate heat because it is not between the conductive loops, and only a small part of heat of the heating body 12 is conducted to the supporting part 124, and the function of the supporting part is mainly to ensure the stability of the structural strength of the heating body 12, so that the lines of the heating body 12 are uniform and do not deform.

The first electrode 121 and the second electrode 122 of the heating element 12 are mainly used for welding the lead-out wire 13, and are generally all embedded in the porous ceramic substrate 11 so that the lead wire 13 can bear a larger tensile force. And the lead 13 part is convenient to contact with an external power supply by mainly utilizing the flexibility characteristic of the lead so as to realize electrical connection.

Preferably, in this embodiment, the substrate 11 is provided with an airflow hole 111 through which an airflow passes, the heating element 12 is embedded in an inner wall surface of the airflow hole 111, and when the heating element 12 generates heat, the atomized medium in the airflow hole 111 of the substrate 11 is heated and atomized, and the gas in the airflow hole 111 flows to carry away the atomized mist.

Furthermore, the heating line 123 is bent along the circumferential direction of the airflow hole 111, so that each position of the airflow hole 111 in the circumferential direction is heated more uniformly, in addition, the atomizing area 113 and the supporting area 112 are respectively arranged along the circumferential direction, the inner diameter of the atomizing area 113 is smaller than that of the supporting area 112, the supporting portion 124 can be exposed out of the supporting area 112, the supporting area 112 is formed by a mold, the supporting portion 124 is supported during forming, the heating line 123 is avoided, and the slurry is coated on the heating line 123.

In other embodiments, the substrate 11 may also be a plate or an arc, the heating element 12 is embedded on one side of the substrate 11, and the airflow flows from the side of the substrate 11 where the heating element 12 is located, so as to carry away the mist generated by heating and atomizing the heating element 12.

In some embodiments, the method of making the porous atomizing core 1 comprises the steps of:

as shown in fig. 6 and 7, the heating element 12 is bonded to the outer surface of the fixing material 2, the fixing material 2 is made of a high-temperature degradable material, the surface is provided with a recess 21, and the heating line 123 is located outside the recess 21.

As shown in fig. 8 to 11, the heating element 12 and the fixing member 2 are placed in the cavity 3, and a cavity H is formed between the cavity 3 and the fixing member 2, and the heating element 12 is located in the cavity H.

As shown in fig. 11, a slurry-coated heating element 12 was injected into the cavity H, and after the slurry was solidified, the cavity 3 was removed to obtain an atomized blank 4 with a fixing member 2 as shown in fig. 12.

As shown in fig. 13 and 14, after the slurry is filled into the recessed portion 21 and cured, the cured slurry is filled between the heating line 123 and the fixing element 2, and the support portion 124 is bonded to the outer surface of the fixing element 2.

And sintering the atomization blank 4, and simultaneously burning the fixing piece 2 to obtain the porous atomization core 1.

Sintering the fixing part 2 together, wherein the heating element 12 can be effectively prevented from deforming in the glue discharging time period in the sintering process, the cooled and solidified porous ceramic atomized blank 4 can be melted again along with heating in the sintering process, the temperature is generally 70-200 ℃, the binder is selected and used differently, the heating element 12 is not supported at this time, and the porous ceramic atomized blank is easy to deform.

The heating element 12 of this patent is supported by the fixing member 2 so as not to be easily deformed. When the slurry is sintered and solidified, the fixing member 2 can be burned off by the reaction of the high temperature and the air in the sintering furnace at the high temperature stage of sintering, for example, above 500 ℃.

Placing of heat-generating body 12 mounting 2 supports and fixes a position, has guaranteed to bury the uniformity of the 11 degree of depth of substrate after the sintering, has also guaranteed the equilibrium of temperature when atomizing core heating atomizing medium, has guaranteed the taste of smog.

Further, when sintering the atomized blank 4, the atomized blank 4 is placed on a sintering carrier, covered with the buried sintering powder, and then sintered.

The slurry is formed by mixing ceramic powder, pore-forming agent and binder; in other embodiments, the slurry is formed by mixing glass powder, pore former, and binder, and the binder may include at least one of paraffin wax and plastic.

The fixing member 2 is made of high-temperature degradable material, such as wood, plastic and other combustible volatile substances, preferably, the fixing member 2 is made of one of wood and plastic, and can be burnt off when sintered at high temperature.

Referring to fig. 7 to 11, the heat generating circuit 123 generates heat in a region aligned with the recess 21 of the fixing member 2, and the support portion 124 of the heat generating body 12 is formed by being curled to be close to the outer periphery of the fixing member 2. The heating element 12 is fixed on the fixing member 2, and here, the heating element 12 can be bonded by glue, and if the fixing member 2 is plastic, the heating element can be fixed on the fixing member 2 by welding or the like without limitation. So that the shape of the heating element 12 is fixed and the curling size is accurate.

The heating lines 123 are arranged at intervals, at least one side of the heating lines 123 is connected with a supporting part 124, and a plurality of concave parts 21 corresponding to the supporting part 124 are distributed on the fixing member 2 at intervals.

The mold cavity 3 includes a base 31 for inserting the fixing member 2, and a first mold plate 32 and a second mold plate 33 for closing the mold from both sides of the fixing member 2, at least one of the first mold plate 32 and the second mold plate 33 is provided with a filling opening M for filling slurry, the fixing member 2 is inserted onto the base 31, the fixing member 2 is clamped to form a mold cavity H after the first mold plate 32 and the second mold plate 33 are closed, and slurry is filled into the mold cavity H through the filling opening M.

The gap between the heating element 12 and the fixing element 2 can be filled with the porous ceramic slurry, the heating element 12 is completely wrapped in the porous ceramic substrate 11, the loosening of the heating element 12 can be effectively prevented, the heating element 12 cannot deviate in the sintering process, and the substrate 11 is wrapped more tightly.

After fixing heat-generating body 12 and mounting 2, the die filling is convenient, and is efficient, can not have the problem that heat-generating body 12 warp moreover, and heat-generating body 12 has been equivalent to the support intensity that has mounting 2, has submitted assembly efficiency greatly. Moreover, the lead 13 is not used for positioning, and the heating body 12 is accurate in position.

And injecting porous ceramic slurry into the cavity H, embedding the heating body 12 into the slurry, curing, demolding after curing to obtain a formed porous ceramic atomization component blank, and sintering to form the porous atomization core 1.

The heating body 12 has stable structure after being formed, is not easy to deform during transportation and loading into the die cavity 3, has high die loading efficiency, is not easy to damage and deform in the product sintering process, and has accurate size of the finished atomizing core. The microstructure of the atomization surface A of the porous atomization core 1 can be ensured, the heating body 12 and the porous ceramic substrate 11 are prevented from being separated, the heating circuit 123 can be in full contact with the substrate 11, and the position in the substrate 11 is stable.

Preferably, mounting 2 is the column, and the method of this patent is, through coiling the shaping back with heat-generating body 12, fixes on mounting 2, designs some structures on mounting 2 for can fix heat-generating body 12 on mounting 2 earlier, then pour into porous ceramic thick liquids into, porous ceramic thick liquids wrap up the fixed back with heat-generating body 12 heating area completely, put into the fritting furnace with mounting 2, heat-generating body 12, porous ceramic substrate 11 together again and sinter, and the 2 materials of mounting can adopt the high temperature degradation material as: at least one of wood, plastic, starch, plant fiber material, etc. is made, the high temperature of the sintering furnace when the porous ceramic is sintered and formed enables the fixing part 2 to be burnt or degraded at high temperature, and only the heating body 12 and the porous ceramic substrate 11 are left.

In this embodiment, the porous ceramic substrate 11 has a columnar structure having the gas flow holes 111 penetrating vertically, the inner walls of the gas flow holes 111 are the atomizing surface a, and the heating element 12 is fitted into the atomizing surface a. The supporting area 112 with the supporting part 124 exposed makes the atomizing surface A form a step structure, the inner hole at the position of the heating area is smaller than the inner hole at the position of the non-heating area, so that the heating area of the heating element 12 is completely embedded in the porous ceramic substrate 11, the part of the non-heating area is embedded on the surface of the airflow hole of the porous ceramic substrate 11, and the embedding depth of the heating element 12 is between 0.1 and 0.8mm.

It is to be understood that the above-described respective technical features may be used in any combination without limitation.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (15)

1. A porous atomizing core is characterized by comprising a porous substrate (11) and a heating body (12);

the heating element (12) comprises a first electrode (121), a second electrode (122), at least one heating line (123) connected between the first electrode (121) and the second electrode (122), and a plurality of support parts (124) respectively connected with the heating line (123);

an atomization surface (A) is formed on the heating body (12), the atomization surface (A) comprises a support area (112) and an atomization area (113), and the support area (112) is lower than the atomization area (113);

the heating line (123) is embedded in the atomization zone (113), the supporting part (124) is embedded in the supporting zone (112), and the embedding depth of the heating line (123) is larger than that of the supporting part (124).

2. The porous atomizing core according to claim 1, wherein the support part (124) and the heat generating circuit (123) are crossed to form a mesh-shaped heat generating body (12).

3. The porous atomizing core according to claim 1, wherein the heating line (123) is embedded outside the base material (11) to a depth of 0.1 to 0.8mm.

4. The porous atomizing core according to claim 1, wherein the substrate (11) is provided with an air flow hole (111) through which an air flow passes, the heat generating element (12) is embedded in an inner wall surface of the air flow hole (111), the heat generating line (123) is curved in a circumferential direction, the atomizing area (113) and the support area (112) are respectively arranged in the circumferential direction, and an inner diameter of the atomizing area (113) is smaller than an inner diameter of the support area (112).

5. The porous atomizing wick according to any one of claims 1 to 4, characterized in that said support portion (124) is exposed to said support region (112).

6. The porous atomizing core according to any one of claims 1 to 4, characterized in that the first electrode (121) and the second electrode (122) are located in the base material (11), and the porous atomizing core (1) further comprises two leads (13) connected to the first electrode (121) and the second electrode (122), respectively, wherein the leads (13) lead out of the base material (11).

7. An atomisation device, characterized in that it comprises an atomiser comprising a porous atomising core (1) according to any of the claims 1 to 6.

8. A method for making a porous atomizing core according to any one of claims 1 to 6, comprising the steps of:

the heating element (12) is attached to the outer surface of a fixing piece (2), the fixing piece (2) is made of high-temperature degradable materials, a concave part (21) is arranged on the surface of the fixing piece, and the heating circuit (123) is located outside the concave part (21);

placing the heating element (12) and the fixing piece (2) into a die cavity (3), forming a die cavity (H) between the die cavity (3) and the fixing piece (2), and positioning the heating element (12) in the die cavity (H);

injecting slurry into the cavity (H) to coat the heating element (12), and after the slurry is solidified, removing the cavity (3) to obtain an atomized blank (4) with the fixing piece (2);

sintering the atomization blank (4) and simultaneously burning the fixing piece (2) to obtain the porous atomization core (1).

9. The method for manufacturing the porous atomizing core according to claim 8, characterized in that the fixing member (2) is in a columnar shape, and the step of attaching the heating element (12) to the outer surface of the fixing member (2) further comprises the steps of:

the heating line (123) is aligned with the recess (21) of the fixing member (2), and the support portion (124) of the heating element (12) is attached to the outer wall surface of the fixing member (2) and then the heating element (12) is fixed to the fixing member (2) by crimping.

10. The method for manufacturing the porous atomizing core according to claim 9, wherein the heating lines (123) are arranged at intervals, at least one side of the heating lines (123) is connected with the supporting portion (124), and a plurality of concave portions (21) corresponding to the supporting portion (124) are distributed on the fixing member (2) at intervals.

11. The manufacturing method of the porous atomizing core according to claim 8, wherein the mold cavity (3) comprises a base (31) for the fixing member (2) to be inserted, and a first mold plate (32) and a second mold plate (33) which are assembled from two sides of the fixing member (2), at least one of the first mold plate (32) and the second mold plate (33) is provided with a filling port (M) for injecting slurry, and the step of placing the heating body (12) and the fixing member (2) into the mold cavity (3) further comprises the following steps:

the fixing piece (2) is inserted into the base (31), and the fixing piece (2) is clamped to form the cavity (H) after the first template (32) and the second template (33) are clamped;

and injecting slurry into the cavity (H) from the injection port (M).

12. Method for making a porous atomizing core according to claim 8, characterized in that sintering the atomizing blank (4) further comprises the steps of:

and placing the atomized blank (4) in a sintering carrier, covering the atomized blank with the buried burning powder, and sintering.

13. The method for manufacturing the porous atomizing core according to any one of claims 8 to 12, wherein the slurry is formed by mixing ceramic powder, pore-forming agent and binder; or the slurry is formed by mixing glass powder, pore-forming agent and binder.

14. The method of claim 13, wherein the binder comprises at least one of paraffin and plastic.

15. The method for manufacturing a porous atomizing core according to any one of claims 8 to 12, wherein the fixing member (2) is made of at least one of wood, plastic, starch and plant fiber material.

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