Double-heating ceramic atomizing core and aerosol generating device

Abstract

The utility model discloses a double-heating ceramic atomizing core and an aerosol generating device, and relates to the technical field of atomizing cores. The double-heating ceramic atomizing core comprises porous ceramic, and the porous ceramic is provided with an oil absorption face and an atomizing face which are oppositely arranged. The heating films are arranged on the atomizing surface and used for heating the liquid aerosol matrix permeating the atomizing surface so as to generate aerosol for smoking, and the number of the heating films is at least two; and the electrode plates are arranged on the atomizing surface, the number of the electrode plates is at least three, and the electrode plates are electrically connected with the adjacent heating films. According to the double-heating ceramic atomizing core and the aerosol generating device, the number of the heating films is increased, and the double heating films are used alternately or simultaneously, so that the service life of the ceramic atomizing core is prolonged, the power adjustable range of the ceramic atomizing core is expanded, and the application range of the ceramic atomizing core is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of atomizer cores, and in particular to a double-heating ceramic atomizer core and an aerosol generating device. Background Art

[0002] The atomizer core is an important component of the aerosol generating device. Most of the existing atomizer cores have only one heating film. Therefore, the service life of the atomizer core is determined by the single heating film. In addition, the power of the atomizer core can be adjusted by the heating film, but the adjustment range of a single heating film is limited. A single heating film cannot withstand excessive power, which will cause the atomizer core to burn. Therefore, it is necessary to seek a dual-heating ceramic atomizer core and an aerosol generating device. Utility Model Content

[0003] In order to solve the above technical problems, the utility model aims to propose a double-heating ceramic atomization core and an aerosol generating device. By increasing the number of heating films and arranging the double heating films for alternating use or simultaneous use, the service life of the ceramic atomization core is extended and the power adjustable range of the ceramic atomization core is expanded, so that the ceramic atomization core has a wider range of application.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] In a first aspect, a double-heating ceramic atomizing core is provided, comprising:

[0006] Porous ceramic, having an oil absorption surface and an atomization surface arranged oppositely;

[0007] A heating film is provided on the atomizing surface and is used to heat the liquid aerosol matrix that permeates the atomizing surface to generate an aerosol for inhalation. There are at least two heating films;

[0008] The electrode sheets are arranged on the atomizing surface, there are at least three electrode sheets and the electrode sheets are electrically connected to the adjacent heating films.

[0009] The porous ceramic has micropores for transmitting liquid aerosol matrix.

[0010] Preferably, the porous ceramic has a micropore diameter of 15-45 um, a porosity of 40-80%, and a compressive strength of 8-20 MPa.

[0011] Wherein, the heating film can be configured to heat simultaneously or alternately.

[0012] Preferably, the heating film is made by printing nickel-chromium alloy paste.

[0013] Preferably, the heating film has a line width of 0.25-0.45 mm, a length of 5-10 mm, and a thickness of 60-100 um.

[0014] Preferably, the distance between adjacent electrode sheets is 2.5-4 mm.

[0015] Furthermore, the porous ceramic is arranged in a rectangular shape, the heating films and the electrode sheets are sequentially spaced apart along the length direction of the porous ceramic, and both sides of each heating film are electrically connected to an electrode sheet respectively.

[0016] Furthermore, there are two heating films and three electrode sheets, which are spaced apart in sequence along the length direction of the porous ceramic. Two heating films are respectively located between two adjacent electrode sheets, and the electrode sheet in the middle is the common electrode of the two heating films.

[0017] Furthermore, the porous ceramic is arranged in a rectangular shape, the heating film is spaced apart along the width direction of the porous ceramic, one of the electrode sheets is arranged on one side of the porous ceramic as a common electrode, and the remaining electrode sheets are arranged on the other opposite side of the porous ceramic and spaced apart in sequence along the width direction of the porous ceramic.

[0018] Furthermore, there are two heating films and three electrode sheets, the two heating films are spaced apart along the width direction of the porous ceramic, one of the three electrode sheets is arranged on one side of the porous ceramic and is electrically connected to the two heating films, and the other two electrode sheets are arranged on the other opposite side of the porous ceramic, and the other two electrode sheets are electrically connected to the two heating films respectively.

[0019] Furthermore, the heating film includes a first straight line segment, a first arc segment, a second straight line segment, a second arc segment and a third straight line segment connected in sequence, the end of the first straight line segment away from the first arc segment is electrically connected to the electrode sheet, and the end of the third straight line segment away from the second arc segment is electrically connected to another electrode sheet.

[0020] Furthermore, at least two first grooves and at least three second grooves are formed on the atomization surface of the porous ceramic, the heating films are respectively embedded in the first grooves, and the electrode sheets are respectively embedded in the second grooves.

[0021] Among them, due to the setting of the first groove, the heating film and the porous ceramic are more closely combined, which can prevent the heating film from falling off the surface of the porous ceramic and improve the bonding strength between the heating film and the porous ceramic.

[0022] Furthermore, a temperature sensor for detecting atomization temperature is also provided on the atomization surface of the porous ceramic.

[0023] Furthermore, the porous ceramic has a length of 4-20 mm, a width of 4-20 mm, and a thickness of 1-5 mm.

[0024] In a second aspect, an aerosol generating device is provided, comprising the double-heating ceramic atomizing core described in the first aspect.

[0025] Preferably, the temperature sensor is used to be electrically connected to a control board of the aerosol generating device.

[0026] Compared with the prior art, the utility model provides a double-heating ceramic atomization core and an aerosol generating device, which has the beneficial effect of increasing the number of heating films and arranging the double heating films for alternating use or simultaneous use, thereby extending the service life of the ceramic atomization core and expanding the power adjustable range of the ceramic atomization core, thereby making the ceramic atomization core more applicable. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 This is a schematic diagram of the structure of the double-heating ceramic atomizing core of Example 1 of the utility model;

[0029] Figure 2 This is a top view of the double-heating ceramic atomizing core of Example 1 of the utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the double-heating type atomizer core of Example 2 of the utility model;

[0031] Figure 4 It is a top view schematic diagram of the double-heating type atomizer core of Example 2 of the utility model.

[0032] Description of the symbols in the figure:

[0033] 1-porous ceramic; 2-heating film; 3-electrode sheet; 4-common electrode. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] It should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0036] The terms "parallel", "vertical", etc. do not mean that the components must be absolutely parallel or vertical, but can be slightly tilted. For example, "parallel" only means that its direction is more parallel than "vertical", and does not mean that the structure must be completely parallel, but can be slightly tilted.

[0037] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In this embodiment, the preparation method of the double-heating ceramic atomizing core comprises the following steps:

[0039] (1) Using a 100-500 mesh screen, a nickel-chromium alloy slurry is printed on the atomized surface of the porous ceramic. The printing conditions are as follows: a printing pressure of 0.2-0.4 MPa, a printing number of 1-4 times, a printing thickness of 40-90 μm, and after printing, the porous ceramic is placed in an oven at 60-80° C. and dried for 10-60 min to obtain a porous ceramic with a heating film;

[0040] (2) using a vacuum sintering furnace or an atmosphere sintering furnace to sinter the porous ceramic provided with the heating film, the sintering conditions being as follows: after debinding at 300-600° C. for 30-120 min, sintering at 900-1130° C. for 60-120 min;

[0041] (3) The electrode is welded to the atomization surface of the porous ceramic to obtain a double-heating ceramic atomization core.

[0042] Preferably, in step (1), the mesh size of the screen is 300 meshes.

[0043] Preferably, in step (1), the printing conditions are as follows: printing pressure is 0.3 MPa, printing times is 3 times, and printing thickness is 65 um.

[0044] Preferably, in step (1), after printing, the porous ceramic is placed in an oven at 70° C. and dried for 40 minutes.

[0045] Preferably, in step (2), the sintering conditions are specifically: debinding at 450° C. for 70 minutes, and then sintering at 1000° C. for 90 minutes.

[0046] Example 1

[0047] See also Figure 1-Figure 2 The double-heating ceramic atomization core shown includes a porous ceramic 1, a heating film 2 and an electrode sheet 3. Among them, the porous ceramic 1 has an oil absorption surface and an atomization surface that are arranged oppositely; the length of the porous ceramic 1 is 4-20mm, the width is 4-20mm, and the thickness is 1-5mm. In this embodiment, the length of the porous ceramic 1 is 20mm, the width is 10mm, and the thickness is 5mm. The porous ceramic 1 has micropores for transmitting liquid aerosol matrix. The micropore diameter of the porous ceramic 1 is 15-45um, the porosity is 40-80%, and the compressive strength is 8-20MPa. In this embodiment, the micropore diameter of the porous ceramic 1 is 30um, the porosity is 60%, and the compressive strength is 15MPa. The heating film 2 is arranged on the atomization surface, which is used to heat the liquid aerosol matrix that penetrates the atomization surface to produce an aerosol for inhalation, and the heating film 2 is at least two. The heating film 2 is made by printing nickel-chromium alloy slurry. The heating film 2 can be set to heat simultaneously or alternately. The line width of the heating film 2 is 0.25-0.45mm, the length is 5-10mm, and the thickness is 60-100um. In this embodiment, the line width of the heating film 2 is 0.35mm, the length is 8mm, and the thickness is 80um. The electrode sheet 3 is arranged on the atomizing surface, and the electrode sheets 3 are at least three and the electrode sheets 3 are electrically connected to the adjacent heating films 2. In addition, the distance between adjacent electrode sheets 3 is 2.5-4mm. In this embodiment, the distance between adjacent electrode sheets 3 is 3mm.

[0048] The porous ceramic 1 is arranged in a rectangular shape, and the heating films 2 and the electrode sheets 3 are sequentially spaced apart along the length direction of the porous ceramic 1, and each heating film 2 is electrically connected to an electrode sheet 3 on both sides. In this embodiment, there are two heating films 2 and three electrode sheets 3, and the three electrode sheets 3 are sequentially spaced apart along the length direction of the porous ceramic 1, and two heating films 2 are respectively located between two adjacent electrode sheets 3, and the electrode sheet 3 located in the middle is the common electrode 4 of the two heating films 2.

[0049] The heating film 2 includes a first straight line segment, a first arc segment, a second straight line segment, a second arc segment and a third straight line segment connected in sequence, the end of the first straight line segment away from the first arc segment is electrically connected to the electrode sheet 3, and the end of the third straight line segment away from the second arc segment is electrically connected to another electrode sheet 3. At least two first grooves and at least three second grooves are provided on the atomization surface of the porous ceramic 1, and the heating film 2 is respectively embedded in the first grooves, and the electrode sheets 3 are respectively embedded in the second grooves. In this embodiment, there are two first grooves and three second grooves. Due to the setting of the first groove, the heating film 2 is more tightly combined with the porous ceramic 1, which can prevent the heating film 2 from falling off the surface of the porous ceramic 1 and improve the bonding strength between the heating film 2 and the porous ceramic 1. A temperature sensor for detecting the atomization temperature is also provided on the atomization surface of the porous ceramic 1. The temperature sensor is used to be electrically connected to the control board of the aerosol generating device including a double heating ceramic atomization core.

[0050] Example 2

[0051] See also Figure 3-Figure 4 The double-heating ceramic atomization core shown includes a porous ceramic 1, a heating film 2 and an electrode sheet 3. Among them, the porous ceramic 1 has an oil absorption surface and an atomization surface arranged oppositely. The length of the porous ceramic 1 is 4-20mm, the width is 4-20mm, and the thickness is 1-5mm. In this embodiment, the length of the porous ceramic 1 is 15mm, the width is 10mm, and the thickness is 5mm. The porous ceramic 1 has micropores for transmitting liquid aerosol matrix. Preferably, the micropore diameter of the porous ceramic 1 is 15-45um, the porosity is 40-80%, and the compressive strength is 8-20MPa. In this embodiment, the micropore diameter of the porous ceramic 1 is 30um, the porosity is 60%, and the compressive strength is 15MPa. The heating film 2 is arranged on the atomization surface, and is used to heat the liquid aerosol matrix that penetrates the atomization surface to produce an aerosol for inhalation. The heating film 2 is at least two. The heating film 2 is made by printing of nickel-chromium alloy slurry. The heating film 2 can be set to heat simultaneously or alternately. The line width of the heating film 2 is 0.25-0.45mm, the length is 5-10mm, and the thickness is 60-100um. In this embodiment, the line width of the heating film 2 is 0.35mm, the length is 8mm, and the thickness is 80um. The electrode sheet 3 is arranged on the atomizing surface, and the electrode sheets 3 are at least three and the electrode sheets 3 are electrically connected to the adjacent heating films 2. The distance between adjacent electrode sheets 3 is 2.5-4mm. In this embodiment, the distance between adjacent electrode sheets 3 is 3mm.

[0052] The porous ceramic 1 is arranged in a rectangular shape, the heating films 2 are spaced apart along the width direction of the porous ceramic 1, one of the electrode sheets 3 is arranged on one side of the porous ceramic 1 as a common electrode 4, and the other electrode sheets 3 are arranged on the other opposite side of the porous ceramic 1 and are spaced apart in sequence along the width direction of the porous ceramic 1. In this embodiment, there are two heating films 2, and there are three electrode sheets 3. The two heating films 2 are spaced apart along the width direction of the porous ceramic 1, one of the three electrode sheets 3 is arranged on one side of the porous ceramic 1 and is electrically connected to the two heating films 2, and the other two electrode sheets 3 are arranged on the other opposite side of the porous ceramic 1, and the other two electrode sheets 3 are electrically connected to the two heating films 2, respectively.

[0053] The heating film 2 includes a first straight line segment, a first arc segment, a second straight line segment, a second arc segment and a third straight line segment connected in sequence, the end of the first straight line segment away from the first arc segment is electrically connected to the electrode sheet 3, and the end of the third straight line segment away from the second arc segment is electrically connected to another electrode sheet 3. At least two first grooves and at least three second grooves are provided on the atomization surface of the porous ceramic 1, and the heating film 2 is respectively embedded in the first grooves, and the electrode sheets 3 are respectively embedded in the second grooves. In this embodiment, there are two first grooves and three second grooves. Due to the setting of the first groove, the heating film 2 is more tightly combined with the porous ceramic 1, which can prevent the heating film 2 from falling off the surface of the porous ceramic 1 and improve the bonding strength between the heating film 2 and the porous ceramic 1. A temperature sensor for detecting the atomization temperature is also provided on the atomization surface of the porous ceramic 1. The temperature sensor is used to be electrically connected to the control board of the aerosol generating device including a double heating ceramic atomization core.

[0054] Comparative Example 1

[0055] A single heating ceramic atomization core comprises a porous ceramic and a heating film and an electrode arranged on the atomization surface of the porous ceramic; the heating film and the electrode are both one, and the heating film and the electrode are electrically connected. The difference between Comparative Example 1 and Examples 1 and 2 is that the heating film and the electrode arranged on the atomization surface of the porous ceramic are both one, and the other conditions are the same.

[0056] Performance test of ceramic atomizer core (life test):

[0057] The ceramic atomizer core is loaded into an aerosol generating device, and the aerosol generating device is used to perform an (aerosol) suction test. The suction capacity of the aerosol generating device is 10 mL (refillable after use), the suction duration is 3 seconds, the suction interval is 8 seconds, and 0.01 mL of aerosol is sucked per puff. Suction until the heating film in the ceramic atomizer core breaks, and the service life of the ceramic atomizer core is measured. In addition, it should be noted that during the performance test, the heating film of the double-heating ceramic atomizer core is set to be heated separately, that is, the heating film is used alternately (the heating film is heated alternately). Performance tests were performed on the double-heating ceramic atomizer cores of Examples 1-2 and the single-heating ceramic atomizer core of Comparative Example 1. The test results are shown in Table 1 below:

[0058] Table 1 Performance test results of the double-heating ceramic atomizer cores of Examples 1-2 and the single-heating ceramic atomizer core of Comparative Example 1

[0059]

[0060]

[0061] It can be seen from the test results in Table 1 that the heating film of the ceramic atomizer core (Comparative Example 1) using a single heating film broke when the 800th puff was drawn. It can be seen that the maximum life of the ceramic atomizer core using a single heating film is 8mL. However, when the double heating ceramic atomizer core (Example 1 and Example 2) of the embodiment of the present invention was drawn for the 2000th puff, the heating film of the ceramic atomizer core still did not break. It can be seen that the maximum life of the ceramic atomizer core using a double heating film is longer than that of the ceramic atomizer core using a single heating film. This is because the heating film of the double heating ceramic atomizer core in the embodiment of the present invention can be heated alternately or simultaneously, so that the maximum life of the double heating ceramic atomizer core exceeds twice the maximum life of the single heating ceramic atomizer core. It can be seen that the double heating ceramic atomizer core can expand the adjustable power range of the ceramic atomizer core.

[0062] The beneficial effects compared with the prior art are:

[0063] The utility model provides a double-heating ceramic atomizer core and an aerosol generating device, the beneficial effects of which are: by increasing the number of heating films and arranging the double heating films for alternate or simultaneous use, the service life of the ceramic atomizer core is prolonged and the power adjustable range of the ceramic atomizer core is expanded, so that the ceramic atomizer core has a wider application range.

[0064] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A double-heating ceramic atomizing core, characterized in that: include: Porous ceramic, having an oil absorption surface and an atomization surface arranged oppositely; A heating film is provided on the atomizing surface and is used to heat the liquid aerosol matrix that permeates the atomizing surface to generate an aerosol for inhalation. There are at least two heating films; The electrode sheets are arranged on the atomizing surface, there are at least three electrode sheets and the electrode sheets are electrically connected to the adjacent heating films.

2. The double-heating ceramic atomizing core according to claim 1, characterized in that: The porous ceramic is arranged in a rectangular shape, the heating films and the electrode sheets are sequentially spaced and distributed along the length direction of the porous ceramic, and both sides of each heating film are electrically connected to an electrode sheet respectively.

3. The double-heating ceramic atomizing core according to claim 2, characterized in that: There are two heating films and three electrode sheets, which are spaced in sequence along the length direction of the porous ceramic. Two heating films are located between two adjacent electrode sheets, and the electrode sheet in the middle is the common electrode of the two heating films.

4. The double-heating ceramic atomizing core according to claim 1, characterized in that: The porous ceramic is arranged in a rectangular shape, the heating film is spaced apart along the width direction of the porous ceramic, one of the electrode sheets is arranged on one side of the porous ceramic as a common electrode, and the remaining electrode sheets are arranged on the other opposite side of the porous ceramic and spaced apart in sequence along the width direction of the porous ceramic.

5. The double-heating ceramic atomizing core according to claim 4, characterized in that: There are two heating films and three electrode sheets. The two heating films are spaced apart along the width direction of the porous ceramic. One of the three electrode sheets is arranged on one side of the porous ceramic and is electrically connected to the two heating films. The other two electrode sheets are arranged on the other opposite side of the porous ceramic, and the other two electrode sheets are electrically connected to the two heating films respectively.

6. The double-heating ceramic atomizing core according to claim 1, characterized in that: The heating film includes a first straight line segment, a first arc segment, a second straight line segment, a second arc segment and a third straight line segment connected in sequence, the end of the first straight line segment away from the first arc segment is electrically connected to the electrode sheet, and the end of the third straight line segment away from the second arc segment is electrically connected to another electrode sheet.

7. The double-heating ceramic atomizing core according to claim 1, characterized in that: At least two first grooves and at least three second grooves are formed on the atomization surface of the porous ceramic, the heating films are respectively embedded in the first grooves, and the electrode sheets are respectively embedded in the second grooves.

8. The double-heating ceramic atomizing core according to claim 1, characterized in that: The atomization surface of the porous ceramic is also provided with a temperature sensor for detecting the atomization temperature.

9. The double-heating ceramic atomizing core according to claim 1, characterized in that: The porous ceramic has a length of 4-20 mm, a width of 4-20 mm, and a thickness of 1-5 mm.

10. An aerosol generating device, characterized in that: It comprises the double-heating ceramic atomizing core as described in any one of claims 1 to 9.

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