Heating element assembly and manufacturing method thereof, and electronic atomization device

Abstract

The present invention provides a heating element component and a manufacturing method thereof, and an electronic atomization device, wherein the heating element component includes: at least one first porous substrate for storing liquid; a first heating film, located on a surface of the first porous substrate, for quantitatively conducting the liquid; a second porous substrate, located on a side of the first heating film away from the first porous substrate, for directional conduction of the liquid quantitatively conducted by the first heating film; a second heating film, located on a side of the second porous substrate away from the first heating film, for generating heat to atomize the liquid in the second porous substrate. In this way, atomized substances are provided quantitatively, thereby improving the user's taste and user experience.

Description

Technical Field

[0001] The present invention relates to the field of electronic smoking devices, and in particular to a heating element component and a manufacturing method thereof, and an electronic atomization device. Background Art

[0002] Existing electronic atomizers mostly use cotton cores, fiber ropes or ceramic heating elements for heating and atomization. Among them, ceramic heating elements are mainly divided into two categories. The first category is a tubular ceramic heating element, in which the heating wire is wrapped around the inner wall of a porous ceramic and then sintered together; the second category is a sheet-type ceramic heating element, in which a metal film or metal mesh is placed on the surface of a porous ceramic sheet and then sintered together. However, for existing ceramic heating elements, no matter which category, it is impossible to control the consumption of atomizing chemicals during each atomization, and it is also impossible to control the effect of atomized smoke, resulting in inconsistent taste for each puff of consumer use, affecting user experience. Summary of the invention

[0003] The present invention provides a heating element component and a manufacturing method thereof, and an electronic atomization device, which are used to quantitatively provide atomized substances, thereby improving the user's taste and enhancing the user experience.

[0004] In order to solve the above technical problems, the first technical solution provided by the present invention is: to provide a heating element assembly, comprising: at least one first porous substrate for storing liquid; a first heating film, located on a surface of the first porous substrate, for quantitatively conducting the liquid; a second porous substrate, located on a side of the first heating film away from the first porous substrate, for directionally conducting the liquid quantitatively conducted by the first heating film; a second heating film, located on a side of the second porous substrate away from the first heating film, for generating heat and atomizing the liquid in the second porous substrate.

[0005] The first heating film and the second heating film are connected to a first control circuit, and the first heating film and the second heating film are made of different materials.

[0006] The first heating film is connected to the second control circuit; the second heating film is connected to the first heating film and the third control circuit, and the first heating film and the second heating film are made of the same or different materials.

[0007] Among them, the first heating film includes a first metal grid portion and a first metal sheet portion connected to the first metal grid portion, and the first metal sheet portion is provided with a first connecting hole; the second heating film includes a second metal grid portion and a second metal sheet portion connected to the second metal grid portion, and the second metal sheet portion is provided with a second connecting hole; wherein the first metal sheet portion and the second metal sheet portion are connected to the first control circuit, and the first connecting hole and the second connecting hole are connected through a conductive material.

[0008] Among them, the first heating film includes a first metal grid portion and a first metal sheet portion connected to the first metal grid portion, and the first metal sheet portion is provided with a first connecting hole; the second heating film includes a second metal grid portion and a second metal sheet portion connected to the second metal grid portion; the second metal sheet portion has a third metal sheet portion on a side away from the second metal grid portion, and the third metal sheet portion has a second connecting hole corresponding to the position of the first connecting hole; wherein the first metal sheet portion is connected to the second control circuit, the second metal sheet portion is connected to the third control circuit, and the second connecting hole is connected to the first connecting hole through a conductive material.

[0009] Wherein, the first porous matrix and the second porous matrix have a plurality of holes, wherein the directions of the plurality of holes in the second porous matrix are perpendicular to the second porous matrix; the holes in the first porous matrix account for 40% to 70% of the volume of the first porous matrix, and the diameter of the holes in the first porous matrix is ​​5 to 50 μm; the holes in the second porous matrix account for 30% to 60% of the volume of the second porous matrix, and the diameter of the holes in the second porous matrix is ​​5 to 30 μm.

[0010] Wherein, the material of the first heating film and the second heating film is one or any combination of FeCrAl, FeCrNi, and TiZr.

[0011] Wherein, the power of the first heating film is smaller than the power of the second heating film.

[0012] In order to solve the above technical problems, the second technical solution provided by the present invention is: to provide an electronic atomization device, the electronic atomization device includes the heating element assembly described in any one of the above items.

[0013] To solve the above technical problems, the third technical solution provided by the present invention is: to provide a method for manufacturing a heating element assembly, comprising: manufacturing a first porous substrate and a second porous substrate; manufacturing a first heating film and a second heating film; arranging a first heating film on the first porous substrate, and manufacturing a second heating film on the second porous substrate; stacking the first porous substrate and the second porous substrate, and making the second porous substrate contact with the first heating film.

[0014] Among them, the preparation of the first porous matrix and the second porous matrix specifically includes: preparing a green substrate by tape casting, ceramic powder injection molding, low-temperature co-fired ceramic technology or high-temperature co-fired ceramic technology; preparing a plurality of holes on the green substrate to form a first porous matrix, and preparing a plurality of holes perpendicular to the green substrate on the green substrate to form a second porous matrix; the preparation of the first heating film and the second heating film also includes: preparing the control circuit required for the first heating film and the second heating film as required; the stacking of the first porous matrix and the second porous matrix and contacting the second porous matrix with the first heating film specifically includes: performing debinding and sintering to bond the first porous matrix and the second porous matrix.

[0015] The beneficial effect of the present invention is as follows: Different from the prior art, the heating element assembly proposed in the present invention includes a first porous substrate, a first heating film, a second porous substrate and a second heating film. Among them, the first porous substrate is used to store liquid, the second heating film is located on a surface of the first porous substrate, and is used to quantitatively guide the liquid, the second porous substrate is located on a side of the first heating film away from the first porous substrate, and is used to directional conduct the liquid quantitatively guided out by the first heating film, and the second heating film is located on a side of the second porous substrate away from the first heating film, and is used to generate heat and atomize the liquid in the second porous substrate. In this way, the amount of atomized liquid is controlled by the first heating film, thereby achieving quantitative atomization, thereby improving the user's taste and user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of a heating element assembly of the present invention;

[0017] Figure 2 It is a structural schematic diagram of an embodiment of the first heating film of the present invention;

[0018] Figure 3 It is a structural schematic diagram of a first embodiment of the second heating film of the present invention;

[0019] Figure 4 is a schematic structural diagram of a second embodiment of a second heating film of the present invention;

[0020] Figure 5 It is a schematic flow chart of a method for manufacturing a heating element assembly of the present invention;

[0021] Figure 6 It is a schematic diagram of the structure of the electronic atomization device of the present invention. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0024] See also Figure 1 , is a schematic diagram of the structure of the first embodiment of the heating element assembly of the present invention. It includes at least a first porous substrate 11, a first heating film 12, a second porous substrate 13 and a second heating film 14. Among them, the first porous substrate 11 is used to store liquid, the first heating film 12 is located on a surface of the first porous substrate 11, and is used to quantitatively guide the liquid, the second porous substrate 13 is located on a side of the first heating film 12 away from the first porous substrate 11, and is used to directional conduct the liquid quantitatively guided by the first heating film 12; the second heating film 14 is located on a side of the second porous substrate 13 away from the first heating film 12, and is used to generate heat and atomize the liquid in the second porous substrate 13.

[0025] In this embodiment, there is one first porous matrix 11. In another embodiment, there may be multiple first porous matrices 11, which are respectively located on the side of the first porous matrix 11 away from the second porous matrix 13 and are used to store liquid. In this case, the liquid stored in the first porous matrix 11 away from the second porous matrix 13 decreases in sequence as it approaches the second porous matrix 13.

[0026] The first heating film 12 and the second heating film 14 can be controlled by the same control circuit or by different control circuits. That is, the first heating film 12 and the second heating film 14 are connected to a common first control circuit (not shown); or, the first heating film 12 is connected to a second control circuit (not shown), and the second heating film 14 is connected to a third control circuit (not shown). In a specific embodiment, since the function of the first heating film 12 is to quantitatively derive the liquid, and the function of the second heating film 14 is to atomize the liquid, the power of the first heating film 12 needs to be less than the power of the second heating film 14. Specifically, when the first heating film 12 and the second heating film 14 are connected to the first control circuit, since the voltage and current received by the first heating film 12 and the second heating film 14 from the first control circuit are the same, in order to make the power of the first heating film 12 and the second heating film 14 different, the materials of the first heating film 12 and the second heating film 14 are different. In another embodiment, when the first heating film 12 is connected to the second control circuit and the second heating film 14 is connected to the third control circuit, since the second control circuit and the third control circuit separately control the first heating film 12 and the second heating film 14, in a specific embodiment, if the current, voltage, etc. of the second control circuit and the third control circuit are the same, in order to ensure the power difference, the materials of the first heating film 12 and the second heating film 14 are different; if the current and voltage of the second control circuit are different from those of the third control circuit, the materials of the first heating film 12 and the second heating film 14 can be the same. It can be understood that in order to satisfy that the power of the second heating film 14 is greater than the power of the first heating film 12, the current and voltage of the second control circuit need to be smaller than the current and voltage of the third control circuit.

[0027] The heating element assembly provided by the present invention is provided with a first porous substrate 11 and a second porous substrate 13, a first heating film 12 is provided between the first porous substrate 11 and the second porous substrate 13, and a second heating film 14 is provided on the side of the second porous substrate 13 away from the first porous substrate 11, so that the first heating film 12 and the second heating film 14 are controlled by a control circuit, and the power of the first heating film 12 is less than the power of the second heating film 14, the first heating film 12 generates heat according to the power to quantitatively guide the liquid, and the second heating film 14 atomizes the guided liquid according to the power. In a specific embodiment, the liquid is smoke oil, which has a certain viscosity. Under the condition of satisfactory temperature, it will penetrate from the first heating film 12 into the second porous substrate 13. When the amount of liquid entering the second porous substrate 13 meets the demand, the power of the first heating film 12 is adjusted so that the smoke oil no longer penetrates.

[0028] The second porous matrix 13 of the present invention is used to store the liquid from the first porous matrix 11 and direct it into the second heating film 14. In a specific application, the second porous matrix 13 is not in direct contact with the liquid. In one embodiment, the thickness of the second porous matrix 13 is 0.5-1 mm.

[0029] In a specific embodiment, the second porous matrix 13 has a plurality of holes 131 in the same direction, such as Figure 1 As shown, in order to ensure that the liquid entering the second porous matrix 13 can be discharged from one direction and then atomized, the hole 131 is a directional hole. Figure 1 The holes shown to be perpendicular to the second porous matrix 13 may also be holes in other directions, as long as they can meet the needs, and there is no specific limitation.

[0030] In a specific embodiment, the first porous matrix 11 is used to store e-liquid. In order to store a certain amount of e-liquid, the first porous matrix 11 has a plurality of holes 111, such as Figure 1 As shown, the pores 111 may be parallel to the first porous matrix 11 , or may be perpendicular to the first porous matrix 11 .

[0031] The pores 111 in the first porous matrix 11 account for 40% to 70% of the volume of the first porous matrix 11, and the diameter of the pores 111 is 5 to 50 μm. The pores 131 in the second porous matrix 13 account for 30% to 60% of the volume of the second porous matrix 13, and the diameter of the pores 131 is 5 to 30 μm.

[0032] The heating element assembly provided by the present invention realizes quantitative liquid conduction through the first heating film 12, directionally conducts the liquid through the second porous matrix 13, and then atomizes the liquid through the second heating film 14, thereby realizing quantitative atomization, thereby improving the user's taste and user experience.

[0033] See also Figure 2 and Figure 3 , Figure 2 is a schematic structural diagram of an embodiment of the first heating film of the present invention, Figure 3 Schematic diagram of the structure of the first embodiment of the second heating film of the present invention. In this embodiment, the first heating film 12 and the second heating film 14 are both connected to the first control circuit.

[0034] The first heating film 12 includes a first metal mesh portion 121 and two first metal sheet portions 122 connecting the first metal mesh portion 121 , namely, there is a first metal sheet portion 122 on each side of the first metal mesh portion 121 , and each first metal sheet portion 122 is provided with a first connection hole 123 .

[0035] The second heating film 14 includes a second metal mesh portion 145 and two second metal sheet portions 146 connecting the second metal mesh portion 145 , that is, there is a second metal sheet portion 146 on each side of the second metal mesh portion 145 , and each second metal sheet portion 146 is provided with a second connection hole 147 corresponding to the position of the first connection hole 123 .

[0036] In this embodiment, the first connection hole 123 is connected to the second connection hole 147 through a conductive material, and the first metal sheet portion 122 of the first heating film 12 may be integrated with a first control circuit, so that the first heating film 12 and the second heating film 14 may be connected to the first control circuit. The first connection hole 123 may be connected to the second connection hole 147 through a wire, or may be connected to the second connection hole 147 through a conductive paste. It can be understood that when the first connection hole 123 is connected to the second connection hole 147, a channel for the wire or the conductive paste to pass through is provided at a designated position of the second porous matrix 13.

[0037] In this embodiment, the materials of the first heating film 12 and the second heating film 14 are different to ensure that the power of the first heating film 12 and the second heating film 14 are different, specifically, to ensure that the power of the first heating film 12 is less than the power of the second heating film 14. In a specific embodiment, the materials of the first heating film 12 and the second heating film 14 can be one of FeCrAl, FeCrNi, TiZr, or any combination thereof.

[0038] See also Figure 2 and Figure 4 , Figure 2 is a schematic structural diagram of an embodiment of the first heating film of the present invention, Figure 4 Schematic diagram of the structure of the second embodiment of the second heating film of the present invention. In this embodiment, the first heating film 12 is connected to the second control circuit, and the second heating film 14 is connected to the third control circuit.

[0039] Among them, Figure 2 As shown, the first heating film 12 includes a first metal grid portion 121 and two first metal sheet portions 122 connecting the first metal grid portion 121 , that is, there is a first metal sheet portion 122 on each side of the first metal grid portion 121 , and each first metal sheet portion 122 is provided with a first connecting hole 123 .

[0040] like Figure 4As shown, the second heating film 14 includes a second metal grid portion 141 and two second metal sheet portions 142 connected to the second metal grid portion 141, that is, there is a second metal sheet portion 142 on each side of the second metal grid portion 141. Each second metal sheet portion 142 has a third metal sheet portion 143 on a side away from the second metal grid portion 141, and each third metal sheet portion 143 has a second connection hole 144 corresponding to the position of the first connection hole 123.

[0041] In this embodiment, the first metal sheet portion 122 is connected to the second control circuit, the second metal sheet portion 142 is connected to the third control circuit, and the first connection hole 123 is connected to the second connection hole 144 through a conductive material. The first connection hole 123 can be connected to the second connection hole 144 through a wire, or can be connected to the second connection hole 144 through a conductive paste. It can be understood that when the first connection hole 123 is connected to the second connection hole 144, a channel for the wire or the conductive paste to pass through is provided at a designated position of the second porous matrix 13.

[0042] In this embodiment, the first heating film 12 and the second heating film 14 are controlled by different control circuits respectively. The materials of the first heating film 12 and the second heating film 14 can be the same or different. In a specific embodiment, in order to ensure that the power of the first heating film 12 is less than the power of the second heating film 14, if the current and voltage of the second control circuit connected to the first heating film 12 are the same as the current and voltage of the third control circuit connected to the second heating film 14, the materials of the first heating film 12 and the second heating film 14 are different. If the current and voltage of the second control circuit connected to the first heating film 12 are different from the current and voltage of the third control circuit connected to the second heating film 14, the materials of the first heating film 12 and the second heating film 14 can be the same. In a specific embodiment, the materials of the first heating film 12 and the second heating film 14 can be one of FeCrAl, FeCrNi, TiZr, or any combination thereof.

[0043] See also Figure 5 , is a schematic flow chart of a first embodiment of a method for manufacturing a heating element assembly of the present invention. It includes:

[0044] Step S51: manufacturing a first porous matrix and a second porous matrix.

[0045] Specifically, the green substrate is prepared by tape casting, colloidal ceramic injection molding (CIM), low-temperature co-fired ceramics (LTCC) technology or high-temperature co-fired ceramics (HTCC) technology.

[0046] A plurality of holes are arranged on the prepared green substrate as required to form a first porous matrix and a second porous matrix. Specifically, a plurality of non-directional holes are arranged on the green substrate to form the first porous matrix, and a plurality of holes perpendicular to the green substrate are arranged on the green substrate to form the second porous matrix.

[0047] Step S52: manufacturing a first heating film and a second heating film.

[0048] Specifically, holes may be punched on the metal sheet as required to form a grid portion, thereby forming the first heating film and the second heating film.

[0049] Specifically, when manufacturing the first heating film and the second heating film, it is necessary to prepare the control circuit as required. If the first heating film is as follows Figure 2 The heat-generating film shown in FIG. 1 is a heat-generating film prepared as follows. Figure 3 If the first heating film is as shown in FIG. Figure 2 The heat-generating film shown in FIG. 1 is a heat-generating film prepared as follows. Figure 4 The heating film shown requires two control circuits, one of which controls the first heating film and the other controls the second heating film.

[0050] Step S53: a first heating film is arranged on the first porous substrate, and a second heating film is made on the second porous substrate.

[0051] The first heating film and the second heating film are stacked with the first porous substrate and the second porous substrate as required.

[0052] Step S54: stacking the first porous substrate and the second porous substrate, and making the second porous substrate contact with the first heating film.

[0053] The first porous substrate and the second porous substrate are stacked and arranged, and the first porous substrate and the second porous substrate are bonded together by debonding and sintering to form a heating element assembly.

[0054] See also Figure 6, is a schematic diagram of the structure of an embodiment of the electronic atomization device of the present invention. The electronic atomization device provided by the present invention includes the heating element assembly 61 described above. Specifically, the electronic atomization device of the present invention can be used in an electronic cigarette, so that the e-liquid can be quantitatively provided through the heating element assembly 61, and then the quantitatively provided e-liquid is atomized, thereby achieving quantitative atomization and improving the user's taste.

[0055] The heating element assembly and the electronic atomization device described in the present invention only describe part of the functional structure, and the other structures are the same as those in the prior art and will not be described here.

[0056] The above are only implementation modes of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A heating element assembly, characterized in that: include: At least one first porous matrix for storing liquid; A first heating film, comprising a first metal mesh portion, located on a surface of the first porous substrate, and used for quantitatively conducting the liquid; A second porous matrix is ​​located at a side of the first heating film away from the first porous matrix and is used for directionally conducting the liquid quantitatively conducted from the first heating film; A second heating film is located on a side of the second porous substrate away from the first heating film and is used to generate heat to atomize the liquid in the second porous substrate; A control circuit connects the first heating film and the second heating film; wherein the first heating film generates heat according to power to quantitatively extract the liquid, and when the amount of liquid entering the second porous matrix meets the demand, the power of the first heating film is adjusted so that the liquid no longer penetrates.

2. The heating element assembly according to claim 1, characterized in that: The first heating film and the second heating film are connected to a first control circuit. Furthermore, the first heating film and the second heating film are made of different materials.

3. The heating element assembly according to claim 1, characterized in that: The first heating film is connected to a second control circuit; The second heating film is connected to the first heating film and the third control circuit. The first heating film and the second heating film are made of the same or different materials.

4. The heating element assembly according to claim 2, characterized in that: The power of the first heating film is smaller than the power of the second heating film; The first heating film further includes a first metal sheet portion connected to the first metal mesh portion, and a first connecting hole is provided on the first metal sheet portion; The second heating film includes a second metal mesh portion and a second metal sheet portion connected to the second metal mesh portion, and the second metal sheet portion is provided with a second connection hole corresponding to the position of the first connection hole; The first metal sheet portion and the second metal sheet portion are connected to the first control circuit, and the first connection hole and the second connection hole are connected via a conductive material.

5. The heating element assembly according to claim 3, characterized in that: The first heating film includes a first metal mesh portion and a first metal sheet portion connected to the first metal mesh portion, and the first metal sheet portion is provided with a first connecting hole; The second heating film comprises a second metal mesh portion and a second metal sheet portion connected to the second metal mesh portion; the second metal sheet portion has a third metal sheet portion on a side away from the second metal mesh portion, and the third metal sheet portion has a second connection hole corresponding to the position of the first connection hole; The first metal sheet portion is connected to the second control circuit, the second metal sheet portion is connected to the third control circuit, and the second connection hole is connected to the first connection hole through a conductive material.

6. The heating element assembly according to claim 1, characterized in that: The first porous matrix and the second porous matrix have a plurality of holes, wherein the directions of the plurality of holes in the second porous matrix are perpendicular to the second porous matrix; The pores in the first porous matrix account for 40% to 70% of the volume of the first porous matrix, and the diameter of the pores in the first porous matrix is ​​5 to 50 μm; The pores in the second porous matrix account for 30% to 60% of the volume of the second porous matrix. The diameter of the pores in the second porous matrix is ​​5 to 30 μm.

7. The heating element assembly according to claim 1, characterized in that: The material of the first heating film and the second heating film is one or any combination of FeCrAl, FeCrNi, and TiZr.

8. The heating element assembly according to claim 1, characterized in that: The power of the first heating film is smaller than the power of the second heating film.

9. An electronic atomization device, characterized in that: The electronic atomization device comprises a heating element assembly according to any one of claims 1 to 8.

10. A method for manufacturing a heating element assembly, used to form the heating element assembly according to any one of claims 1 to 8, characterized in that: The method comprises: Making a first porous substrate and a second porous substrate; Manufacturing a first heating film and a second heating film; wherein the first heating film comprises a metal mesh portion; Arranging a first heat-generating film on the first porous substrate, and making a second heat-generating film on the second porous substrate; The first porous substrate and the second porous substrate are stacked and the second porous substrate is in contact with the first heating film; Wherein, manufacturing the first heating film and the second heating film further comprises: Prepare the control circuits required for the first heating film and the second heating film as required.

11. The manufacturing method according to claim 10, characterized in that: The manufacturing of the first porous substrate and the second porous substrate specifically includes: The green substrate is prepared by tape casting, ceramic powder injection molding, low temperature co-fired ceramic technology or high temperature co-fired ceramic technology; A plurality of holes are prepared on the green substrate to form a first porous substrate, and a plurality of holes perpendicular to the green substrate are prepared on the green substrate to form a second porous substrate; The stacking of the first porous substrate and the second porous substrate and contacting the second porous substrate with the first heating film specifically includes: Debinding and sintering are performed to bond the first porous matrix and the second porous matrix.

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