Heating element, atomization component and electronic atomization device

Abstract

The present application provides a heating element, an atomization component and an electronic atomization device. The heating element includes a dense matrix, and an atomization area and a non-atomization area are provided on the dense matrix; the atomization area has a plurality of liquid guiding holes penetrating through the dense matrix for transporting an aerosol-forming matrix from one side of the dense matrix to the other side; at least one air exchange hole is provided in the non-atomization area; the aperture of the air exchange hole is larger than the aperture of the liquid guiding hole. Through the above arrangement, the heating element has an air exchange function, reducing the processing difficulty of the air exchange structure in the electronic atomization device.

Description

Technical Field

[0001] The present invention relates to the technical field of atomization components, and in particular to a heating element, an atomization component and an electronic atomization device. Background Art

[0002] The main function of an electronic atomization device is realized by an atomization component. The atomization component atomizes the aerosol-forming matrix stored inside to generate an aerosol for the user to inhale. Based on the required functions, the atomization component usually has a liquid storage cavity for storing the aerosol-forming matrix, a heating element for atomizing the aerosol-forming matrix, a seal for preventing the liquid in the liquid storage cavity from flowing to places other than the heating element, and an air flow channel for the external gas and aerosol to flow. The user inhales the aerosol through the port of the air flow channel.

[0003] When the electronic atomization device is heating and atomizing, as the aerosol-forming matrix in the liquid storage cavity is consumed, the gas space inside the liquid storage cavity increases, the air pressure in the liquid storage cavity decreases, and the resistance of the aerosol-forming matrix flowing to the heating element increases, which easily leads to insufficient liquid supply and dry burning phenomenon. To solve this problem, usually a ventilation structure connecting the external gas and the liquid storage cavity is added to the atomization base. Driven by the pressure difference, the external gas replenishes the gas in the liquid storage cavity through the ventilation structure to balance the air pressure. However, the current ventilation structure is difficult to process. Summary of the Invention

[0004] In view of this, the present application provides a heating element, an atomization component and an electronic atomization device to solve the technical problem of the large processing difficulty of the ventilation structure in the prior art.

[0005] To solve the above technical problem, the first technical solution provided by the present application is: to provide a heating element, including a dense matrix, on which an atomization area and a non-atomization area are provided; the atomization area has a plurality of liquid guiding holes penetrating through the dense matrix for transporting the aerosol-forming matrix from one side of the dense matrix to the other side; the non-atomization area is provided with at least one ventilation hole; the aperture of the ventilation hole is larger than the aperture of the liquid guiding hole.

[0006] Wherein, the heating element further includes a heating element, which is arranged in the atomization area of the dense matrix for heating and atomizing the aerosol-forming matrix.

[0007] Wherein, it further includes an electrode, the electrode is arranged in the non-atomization area of the dense matrix, the heating element is electrically connected to the electrode; the ventilation hole is arranged on the side of the electrode away from the atomization area.

[0008] Wherein, the electrode includes a positive electrode and a negative electrode, and the positive electrode and the negative electrode are respectively disposed on opposite sides of the atomization zone; only one air exchange hole is provided on the dense substrate, and the air exchange hole is located on the side of the positive electrode or the negative electrode away from the atomization zone.

[0009] Wherein, one of the positive electrode and the negative electrode is disposed at the edge of the dense substrate, and the other is disposed at an interval from the edge of the dense substrate; the air exchange hole is located on the side of the other of the positive electrode and the negative electrode away from the atomization zone.

[0010] Wherein, the electrode includes a positive electrode and a negative electrode, and the positive electrode and the negative electrode are respectively disposed on opposite sides of the atomization zone; two air exchange holes are symmetrically arranged at the center of the dense substrate, one air exchange hole is located on the side of the positive electrode away from the atomization zone, and the other air exchange hole is located on the side of the negative electrode away from the atomization zone.

[0011] Wherein, the non-atomization zone surrounds the atomization zone and is a blank area.

[0012] Wherein, the thickness of the dense substrate is 0.2 mm to 1 mm, the pore diameter of the air exchange hole is 100 μm to 200 μm, and the air exchange pressure of the air exchange hole is -600 Pa to -1200 Pa.

[0013] Wherein, the pore diameter of the liquid guiding hole is 10 μm to 100 μm.

[0014] Wherein, the pore diameter of the liquid guiding hole is 15 μm to 60 μm.

[0015] Wherein, the ratio of the pore diameter of the air exchange hole to the pore diameter of the liquid guiding hole is 1:1 to 4:1.

[0016] Wherein, the material of the dense substrate is glass, dense ceramic or silicon.

[0017] Wherein, the heating element is a heating wire, a heating mesh or a heating film; the heating element is disposed on the surface of the dense substrate or buried inside the dense substrate.

[0018] To solve the above technical problems, the second technical solution provided by this application is: to provide an atomization assembly, including a liquid storage cavity and a heating body; the liquid storage cavity is used for storing an aerosol generating matrix; the heating body is used for atomizing the aerosol generating matrix from the liquid storage cavity; the heating body is the heating body described in any one of the above; one end of the air exchange hole is communicated with the liquid storage cavity, and the other end is communicated with the outside atmosphere.

[0019] Further, a seal and an abutting portion are included; the seal is located on a side of the abutting portion away from the liquid storage cavity; at least a part of the seal is located between the heating element and the abutting portion, and the seal is used to seal a structural gap between the heating element and the liquid storage cavity; a liquid passage hole is provided on the seal to enable fluid communication between the atomization area of the heating element and the liquid storage cavity.

[0020] Wherein, the seal is arranged in a dislocation manner with respect to the air exchange hole to enable communication between the air exchange hole and the liquid storage cavity; or, a first through hole is provided at a position of the seal corresponding to the air exchange hole to enable communication between the air exchange hole and the liquid storage cavity.

[0021] Wherein, the heating element is the heating element described above; only one of the two air exchange holes corresponds to the seal and is provided with one of the first through holes.

[0022] Wherein, the heating element is the heating element described above; two first through holes are provided on the seal, and the two first through holes are symmetrically arranged at the center; one of the two first through holes is arranged corresponding to the air exchange hole.

[0023] Wherein, a first through hole is provided at a position of the seal corresponding to the air exchange hole; the abutting portion is arranged in a dislocation manner with respect to the first through hole, or the abutting portion has a second through hole communicating with the first through hole to enable communication between the air exchange hole and the liquid storage cavity.

[0024] Wherein, a coating is provided on the pore wall of the first through hole, and the material of the coating has stronger wettability than the material of the seal, or the contact angle between the material of the coating and the aerosol-forming substrate is smaller than the contact angle between the material of the seal and the aerosol-forming substrate.

[0025] Wherein, the abutting portion has a second through hole communicating with the first through hole; a hollow protrusion communicating with the second through hole is provided at a position of the abutting portion corresponding to the first through hole, and the hollow protrusion is arranged inside the first through hole; the material of the abutting portion has stronger wettability than the material of the seal, or the contact angle between the material of the abutting portion and the aerosol-forming substrate is smaller than the contact angle between the material of the seal and the aerosol-forming substrate.

[0026] Further, an atomization seat is included, the atomization seat has a receiving cavity, and the heating element is arranged in the receiving cavity;

[0027] The abutting portion is located on the atomization seat and / or the cavity wall of the liquid storage cavity.

[0028] Wherein, the viscosity of the aerosol-forming substrate is 60 cp to 500 cp.

[0029] To solve the above technical problems, the third technical solution provided by this application is: to provide an electronic atomization device, including an atomization component and a battery component, where the atomization component is the atomization component described in any one of the above, and the battery component provides energy for the operation of the atomization component.

[0030] Advantages of this application: Different from the prior art, the heating element in this application includes a dense matrix, and an atomization area and a non-atomization area are provided on the dense matrix; the atomization area has a plurality of liquid guiding holes penetrating the dense matrix for transporting the aerosol-forming matrix from one side of the dense matrix to the other side; at least one ventilation hole is provided in the non-atomization area; the aperture of the ventilation hole is larger than the aperture of the liquid guiding hole. Through the above settings, the heating element has a ventilation function, reducing the processing difficulty of the ventilation structure in the electronic atomization device. Description of the Drawings

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 is a schematic structural diagram of the electronic atomization device provided by this application;

[0033] Figure 2 is a schematic structural diagram of the atomization component provided by this application;

[0034] Figure 3 is a partial structural sketch of another embodiment of the atomization component provided by this application;

[0035] Figure 4 is a three-dimensional structural diagram of the heating element provided by this application;

[0036] Figure 5 is Figure 4 a cross-sectional schematic diagram of the heating element provided;

[0037] Figure 6 is Figure 4 a structural sketch of the assembly of the heating element, the seal, and the liquid storage cavity provided;

[0038] Figure 7 is Figure 4 another structural sketch of the assembly of the heating element, the seal, and the liquid storage cavity provided;

[0039] Figure 8 is a cross-sectional schematic diagram of another embodiment of the heating element provided by this application;

[0040] Figure 9 isFigure 8 Schematic diagram of the assembly structure of the heating element, the seal, and the liquid storage chamber provided

[0041] Figure 10 Is a three-dimensional structure schematic diagram of another embodiment of the heating element provided in this application

[0042] Figure 11 Is Figure 10 Schematic diagram of the assembly structure of the heating element, the seal, and the liquid storage chamber provided

[0043] Figure 12 Is Figure 10 Schematic diagram of the assembly structure of the heating element, the seal, and the abutting portion provided

[0044] Figure 13 Is Figure 10 Schematic diagram of the assembly structure of another embodiment of the heating element and the seal provided Specific embodiments

[0045] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application

[0046] The terms "first", "second", and "third" in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", and "third" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. All directional indications (such as up, down, left, right, front, back...) in the embodiments of this application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products, or devices

[0047] References herein to "embodiments" mean that the particular features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0048] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of an electronic atomization device provided by the present application.

[0049] The electronic atomization device can be used for atomizing a liquid matrix. The electronic atomization device includes an atomization component 1 and a power supply component 2 that are connected to each other. The atomization component 1 and the power supply component 2 can be integrally provided or detachably connected, and are designed according to specific needs.

[0050] The atomization component 1 is used to store a liquid aerosol generating matrix and atomize the aerosol generating matrix to form an aerosol for the user to inhale. The liquid aerosol generating matrix can be a liquid matrix such as a liquid medicine or a liquid of plant leaves; the atomization component 1 can be specifically used in different fields, such as medical treatment, beauty, and recreational inhalation. The power supply component 2 includes elements such as a battery (not shown in the figure), an air flow sensor (not shown in the figure), and a controller (not shown in the figure); the battery is used to supply power to the atomization component 1 so that the atomization component 1 can atomize the aerosol generating matrix to form an aerosol; the air flow sensor is used to detect changes in the air flow in the electronic atomization device, and the controller controls whether the atomization component 1 operates according to the air flow changes detected by the air flow sensor and a preset program.

[0051] Please refer to Figure 2 , Figure 2 which is a schematic structural diagram of the atomization component provided by the present application.

[0052] The atomization assembly 1 includes a housing 10, an atomization base 11, and a heating element 12. The housing 10 has a liquid storage cavity 13 and an air outlet channel 14. The liquid storage cavity 13 is used to store the liquid aerosol generating matrix, and the liquid storage cavity 13 is arranged around the air outlet channel 14. Optionally, the viscosity of the aerosol generating matrix in the liquid storage cavity 13 is 60 cp to 500 cp. The end of the housing 10 also has a suction port 15, and the suction port communicates with the air outlet channel 14. The housing 10 has a receiving cavity 16 on the side of the liquid storage cavity 13 away from the suction port 15, and the atomization base 11 is arranged in the receiving cavity 16. The atomization base 11 includes an atomization top base 111 and an atomization bottom base 112. The atomization top base 111 and the atomization bottom base 112 cooperate to form a receiving cavity 113; that is, the atomization base 11 has a receiving cavity 113. The heating element 12 is arranged in the receiving cavity 113 and is arranged in the receiving cavity 16 together with the atomization base 11. Among them, the heating element 12 is in fluid communication with the liquid storage cavity 13, and the heating element 12 is used to absorb and heat the aerosol generating matrix in the liquid storage cavity 13 to generate aerosol.

[0053] In this embodiment, the heating element 12 includes a liquid absorption surface and an atomization surface. The surface of the heating element 12 that is in fluid communication with the liquid storage cavity 13 is the liquid absorption surface. The surface of the heating element 12 away from the liquid storage cavity 13 is the atomization surface. An atomization cavity 115 is formed between the atomization surface of the heating element 12 and the inner wall surface of the receiving cavity 113, and the atomization cavity 115 communicates with the air outlet channel 14. An air inlet 116 is arranged on the atomization bottom base 112 to communicate the outside with the atomization cavity 115. The outside air enters the atomization cavity 115 through the air inlet 116, carries the aerosol atomized by the heating element 12 into the air outlet channel 14, and finally reaches the suction port 15 and is inhaled by the user.

[0054] The atomization assembly 1 further includes a holding portion 110 and a seal 18. The seal 18 is located on the side of the holding portion 110 away from the liquid storage cavity 13. The seal 18 is at least partially located between the heating element 12 and the holding portion 110. The seal 18 is used to seal the structural gap between the heating element 12 and the liquid storage cavity 13 to prevent the aerosol generating matrix or condensate from overflowing from the edge of the heating element 12. That is, the seal 18 is used to seal the periphery of the heating element 12. Optionally, the material of the seal 18 is silicone or fluororubber. It can be understood that the seal 18 can be entirely located on the surface of the heating element 12 close to the holding portion 110; or, the seal 18 is partially located on the surface of the heating element 12 close to the holding portion 110 and partially located on the side surface of the heating element 12; or, the seal 18 is partially located on the surface of the heating element 12 close to the holding portion 110, partially located on the side surface of the heating element 12, and partially located on the surface of the heating element 12 away from the holding portion 110. The setting manner of the seal 18 can be designed according to specific needs.

[0055] In this embodiment, the atomizing base 11 has an abutting portion 110. Specifically, a receiving groove 1111 is provided on the atomizing top base 111, and the receiving groove 1111 cooperates with the atomizing bottom base 112 to form a receiving cavity 113. The heating element 12 is disposed in the receiving groove 1111, the bottom wall of the receiving groove 1111 forms the abutting portion 110, and the sealing member 18 is at least partially disposed between the bottom wall of the receiving groove 1111 and the liquid absorption surface of the heating element 12. The heating element 12 and the sealing member 18 are disposed in the receiving groove 1111.

[0056] Two liquid supply channels 114 are provided on the atomizing top base 111, and the two liquid supply channels 114 are disposed on both sides of the air outlet channel 14. One end of the liquid supply channel 114 communicates with the liquid storage cavity 13, and the other end communicates with the receiving groove 1111 of the receiving cavity 113, so that the aerosol generating matrix in the liquid storage cavity 13 enters the heating element 12 through the liquid supply channel 114.

[0057] In another embodiment, the receiving groove 1111 may not be provided on the atomizing top base 111, that is, the bottom wall of the receiving groove 1111 is not used as the abutting portion 110, and the abutting portion 110 may be formed by other structures of the atomizing base 11.

[0058] Refer to Figure 2 , the atomizing assembly 1 further includes a sealing top cover 19. The sealing top cover 19 is disposed on the surface of the atomizing top base 111 close to the liquid storage cavity 13 for sealing between the liquid storage cavity 13, the atomizing top base 11, and the air outlet channel 14 to prevent liquid leakage. Optionally, the materials of the sealing member 18 and the sealing top cover 19 are silicone or fluororubber.

[0059] The atomizing assembly 1 further includes a conducting member 17. The conducting member 17 is disposed on the side of the heating element 12 away from the liquid storage cavity 13, and the conducting member 17 is fixed to the atomizing bottom base 112. One end of the conducting member 17 is electrically connected to the heating element 12, and the other end is used for electrically connecting to the power supply assembly 2 so that the heating element 12 can operate. The conducting member 17 can be a metal thimble.

[0060] In some embodiments, the end face of the wall of the liquid storage cavity 13 close to the heating element 12 abuts against the sealing member 18, that is, the end face of the wall of the liquid storage cavity 13 close to the heating element 12 serves as the abutting portion 110 (please refer to Figure 3 , Figure 3 is a partial structural schematic diagram of another embodiment of the atomizing assembly provided by the present application), and the other structures of the atomizing assembly 1 are changed accordingly. The setting manner of the abutting portion 110 is designed according to needs, and the present application does not limit this.

[0061] Please refer to Figure 4 and Figure 5 , Figure 4 is a three-dimensional structural schematic diagram of the heating element provided by the present application, Figure 5 isFigure 4 Schematic cross-sectional view of the heating element provided.

[0062] The heating element 12 includes a dense matrix 121, and the material of the dense matrix 121 is glass, dense ceramic or silicon. When the dense matrix 121 is glass, it can be one of ordinary glass, quartz glass, borosilicate glass, and photosensitive lithium aluminosilicate glass. An atomization area 124 and a non-atomization area 125 are provided on the dense matrix 121; the atomization area 124 is the area where the heating element 12 atomizes the aerosol-forming matrix to generate aerosol, and the non-atomization area 125 is the other area on the dense matrix 121 except the atomization area 124. The atomization area 124 has a plurality of liquid guide holes 1211 penetrating through the dense matrix 121 for transporting the aerosol-forming matrix from one side of the dense matrix 121 to the other side; at least one air exchange hole 1212 is provided in the non-atomization area 125; the aperture of the air exchange hole 1212 is larger than the aperture of the liquid guide hole 1211. [[ID=X]] [[ID=Y]]

[0063] It can be understood that in order to improve the strength of the flat dense matrix 121, the liquid guide holes 1211 are only provided in the atomization area 124, and no liquid guide holes 1211 are provided in the non-atomization area 125. That is, the non-atomization area 125 surrounds the atomization area 124 and is a blank area. It can be understood that the area around the atomization area 124 on the dense matrix 121 in this application is larger than the aperture of the liquid guide hole 1211 to be called a blank area; that is, the blank area in this application is the area where the liquid guide hole 1211 can be formed but is not formed, and the area around the atomization area 124 where the liquid guide hole 1211 cannot be formed.

[0064] By providing the air exchange hole 1212 on the dense matrix 121 of the heating element 12, one end of the air exchange hole 1212 is communicated with the liquid storage cavity 13, and the other end of the air exchange hole 1212 is communicated with the atomization cavity 115 or the outside atmosphere. The air exchange of the liquid storage cavity 13 is realized through the air exchange hole 1212 to maintain the balanced air pressure in the liquid storage cavity 13, thereby ensuring smooth liquid supply in the liquid storage cavity 13 and making the heating element 12 well supplied with liquid. That is to say, the heating element 12 provided in the embodiment of this application has an air exchange function, and no additional air exchange structure needs to be provided on other structures of the atomization assembly 1, reducing the processing difficulty of the air exchange structure in the electronic atomization device.

[0065] In this embodiment, the dense matrix 121 is sheet-shaped. It can be understood that the sheet shape is relative to the block shape, and the ratio of the length to the thickness of the sheet is larger than the ratio of the length to the thickness of the block. That is to say, in this embodiment, the dense matrix 121 is flat. In other embodiments, the dense matrix 121 can also be arc-shaped, cylindrical, etc., such as cylindrical, and other structures in the atomization assembly 1 are arranged in cooperation with the specific structure of the dense matrix 121. Hereinafter, the case where the dense matrix 121 is flat will be taken as an example for introduction.

[0066] Specifically, the thickness of the dense matrix 121 is 0.2 mm to 1 mm. When the thickness of the dense matrix 121 is greater than 1 mm, the liquid supply requirement cannot be met, resulting in a decrease in the amount of aerosol and a large amount of heat loss, and the cost of setting the liquid guide hole 1211 is high; when the thickness of the dense matrix 121 is less than 0.2 mm, the strength of the dense matrix 121 cannot be guaranteed, which is not conducive to improving the performance of the electronic atomization device. Preferably, the thickness of the dense matrix 121 is 0.2 mm to 0.5 mm.

[0067] The aperture of the liquid guide hole 1211 is 10 μm to 100 μm; preferably, the size range of the liquid guide hole 1211 is 15 μm to 60 μm. When the aperture of the liquid guide hole 1211 is less than 10 μm, the liquid supply requirement cannot be met, resulting in a decrease in the amount of aerosol; when the aperture of the liquid guide hole 1211 is greater than 100 μm, the aerosol generating matrix easily flows out of the liquid guide hole 1211, causing liquid leakage and resulting in a decrease in the atomization efficiency. Preferably, the aperture of the liquid guide hole 1211 is 15 μm to 60 μm.

[0068] The aperture of the air exchange hole 1212 is 100 μm to 200 μm, and the air exchange pressure of the air exchange hole 1212 is -600 Pa to -1200 Pa. When the aperture of the air exchange hole 1212 is greater than 200 μm, there may be a risk of liquid leakage; when the aperture of the air exchange hole 1212 is less than 100 μm, a good air exchange effect cannot be achieved, thereby affecting the liquid supply speed and the atomization efficiency. It can be understood that the aperture of the air exchange hole 1212 can be designed according to the thickness of the dense matrix 121 and the preset air exchange pressure. When the pressure difference on both sides of the heating element 12 reaches the preset air exchange pressure, the liquid in the air exchange hole 1212 is pushed out by the gas to ventilate the liquid storage cavity 13. According to the theoretical calculation method of the air exchange pressure, the maximum theoretical air exchange pressure is the pressure generated by the frictional resistance + surface tension + liquid level height. When the thickness of the dense matrix 121 is 0.2 mm to 1 mm and the aperture of the air exchange hole 1212 is 100 μm to 200 μm, corresponding to the air exchange pressure of about -600 Pa to -1200 Pa, it can be applicable to the aerosol generating matrix with a viscosity in the range of 60 cp to 500 cp.

[0069] It can be understood that the thickness of the dense matrix 121, the aperture of the liquid guide hole 1211, and the aperture of the air exchange hole 1212 can be selected according to actual needs. Among them, preferably, the ratio of the aperture of the air exchange hole 1212 to the aperture of the liquid guide hole 1211 is 1:1 to 4:1, such as 2:1, which can achieve a good air exchange effect.

[0070] In this embodiment, the heating element 12 further includes a heating element 122, which is disposed in the atomization region 124 of the dense matrix 121 and is used to heat and atomize the aerosol generating matrix. The heating element 122 can be a heating sheet, a heating wire, a heating film, a heating mesh, etc., and can be disposed on the surface of the dense matrix 121 or buried inside the dense matrix 121, and is specifically designed according to needs. In other embodiments, the dense matrix 121 itself can generate heat, for example, a conductive ceramic that can generate heat by itself.

[0071] In one embodiment, the heating element 122 is a heating film formed on the surface of the dense matrix 121, and the heating film is a thin film; the thickness range of the heating film is 200 nanometers to 5 micrometers. Preferably, the thickness range of the heating film is 200 nanometers to 1 micrometer. More preferably, the thickness range of the heating film is 200 nanometers to 500 nanometers. When the heating film is a thin film, the heating film has a plurality of micropores 1221 that correspond to and communicate with the plurality of liquid guide holes 1211 one by one. Further, the heating film is also formed on the inner surface of the liquid guide holes 1211; preferably, the heating film is also formed on the entire inner surface of the liquid guide holes 1211 (the structure is as Figure 5 shown). The arrangement of the heating film on the inner surface of the liquid guide holes 1211 enables the aerosol generating matrix to be atomized within the liquid guide holes 1211, which is beneficial to improving the atomization effect.

[0072] In this embodiment, the heating element 12 further includes an electrode 123, which is disposed in the non-atomization region 125 of the dense matrix 121. The electrode 123 is electrically connected to the heating element 122, and the ventilation hole 1212 is disposed on the side of the electrode 123 away from the atomization region 124. Specifically, the electrode 123 is electrically connected to the power supply assembly 2 through a conduction member 17 to enable the heating element 122 to atomize the aerosol generating matrix when the power supply assembly 2 is powered on. The electrode 123 includes a positive electrode 1231 and a negative electrode 1232, and the positive electrode 1231 and the negative electrode 1232 are respectively disposed on opposite sides of the atomization region 124. The electrode 123 can be a metal thin film.

[0073] The number and position of the ventilation holes 1212 are not limited. Preferably, the ventilation holes 1212 are located on the side of the electrode 123 away from the atomization region 124. Generally, one ventilation hole 1212 corresponds to form one ventilation channel. The inventors of the present application have found that for an atomizer using a sheet-shaped dense matrix 121, only one ventilation channel is provided, and the ventilation stroke is more stable. Therefore, preferably, only one ventilation hole 1212 is provided on the dense matrix 121, which further simplifies the manufacturing process of the dense matrix 121 because drilling holes in the dense matrix 121 is time-consuming.

[0074] In one embodiment, only one ventilation hole 1212 is provided on the dense substrate 121, and the ventilation hole 1212 is located on the side of the positive electrode 1231 or the negative electrode 1232 away from the atomization area 124. One of the positive electrode 1231 and the negative electrode 1232 is arranged at the edge of the dense substrate 121, and the other of the positive electrode 1231 and the negative electrode 1232 is arranged at an interval from the edge of the dense substrate 121; the ventilation hole 1212 is located on the side of the other of the positive electrode 1231 and the negative electrode 1232 away from the atomization area 124. Specifically, the electrode 123 and the heating element 122 can be offset as a whole on the dense substrate 121, or one of the positive electrode 1231 and the negative electrode 1232 can be enlarged in area so that it is arranged at the edge of the dense substrate 121. For example, Figure 4 in which, the negative electrode 1232 is arranged at the edge of the dense substrate 121, and a ventilation hole 1212 is arranged on the side of the positive electrode 1231 away from the atomization area 124.

[0075] Please refer to Figure 6 , Figure 6 which Figure 4 is a schematic diagram of the assembly structure of the heating element, the seal and the liquid storage cavity provided.

[0076] Figure 6 In [the figure], an example is introduced with the seal 18 entirely arranged on the surface of the heating element 12 close to the abutting portion 110.

[0077] A liquid inlet hole 181 is provided on the seal 18 to make the atomization area 124 of the heating element 12 communicate with the liquid storage cavity 13 in a fluid manner. In one embodiment, the liquid inlet hole 181 on the seal 18 makes the liquid inlet channel 114 on the atomization top seat 111 communicate with the liquid guiding hole 1211 on the dense substrate 121, and the liquid inlet channel 114 communicates the liquid inlet hole 181 with the liquid storage cavity 13. The aerosol generating matrix in the liquid storage cavity 13 enters the heating element 12 through the liquid inlet channel 114 and the liquid inlet hole 181; that is to say, the liquid absorption surface of the heating element 12 communicates with the liquid storage cavity 13 in a fluid manner through the liquid inlet hole 181 of the seal 18. In another embodiment, the liquid inlet hole 181 on the seal 18 makes the heating element 12 communicate directly with the liquid storage cavity 13 in a fluid manner; that is to say, there is no need to provide the liquid inlet channel 114, and the aerosol generating matrix in the liquid storage cavity 13 can enter the heating element 12 only through the liquid inlet hole 181. It can be understood that the liquid inlet hole 181 of the seal 18 is arranged corresponding to the atomization area 124 of the dense substrate 121, and the liquid inlet hole 181 exposes at least part of the atomization area 124 to complete atomization.

[0078] In one embodiment, the seal 18 is arranged offset from the air exchange hole 1212 on the dense substrate 121 so that the air exchange hole 1212 communicates with the liquid storage chamber 13; that is to say, while sealing the edge of the heating element 12, the seal 18 does not block the air exchange hole 1212. For example, the pore wall of the lower liquid hole 181 of the seal 18 is located between the air exchange hole 1212 and the edge of the seal 18.

[0079] In another embodiment, while sealing the edge of the heating element 12, the seal 18 covers the air exchange hole 1212, and a first through hole 182 is provided at the position of the seal 18 corresponding to the air exchange hole 1212 so that the air exchange hole 1212 communicates with the liquid storage chamber 13.

[0080] Optionally, as Figure 6 shown, the seal 18 is provided with only one first through hole 182 corresponding to the air exchange hole 1212 on the dense substrate 121. Specifically, the seal 18 is a rectangular ring structure, and the two short side frames of the seal 18 are one wide and one narrow. The first through hole 182 is provided on the wider short side frame, which is equivalent to the offset arrangement of the first through hole 182 and the lower liquid hole 181. Since the atomization area 124 and the electrode 123 of the heating element 12 are offset on the dense substrate 121, the seal 18 is also arranged in a corresponding offset structure, which is convenient for aligning the first through hole 182 with the air exchange hole 1212 during installation.

[0081] Optionally, as Figure 7 shown ( Figure 7 is Figure 4 another assembly structure diagram of the heating element, the seal and the liquid storage chamber provided), Figure 7 in which the case where the seal 18 is entirely arranged on the surface of the heating element 12 close to the abutting portion 110 is taken as an example for introduction. Two first through holes 182 are provided on the seal 18, and the two first through holes 182 are symmetrically arranged along the geometric center of the seal 18. One of the two first through holes 182 is correspondingly arranged with the air exchange hole 1212 on the dense substrate 121. This structural design can solve the problem of blind installation and reduce the assembly error rate. It can be understood that the dense substrate 121 and the seal 18 are usually rectangular. Since the apertures of the air exchange hole 1212 and the first through hole 182 are very small and not easily visible to the naked eye, if only one first through hole 182 is provided on the seal 18, it is necessary to ensure that the only first through hole 182 must be aligned with the only air exchange hole 1212, that is, the seal 18 cannot be installed reversely. Two first through holes 182 are provided on the seal 18 and are symmetrically arranged along the geometric center of the seal 18. Even if the seal 18 is installed reversely, there is always one first through hole 182 aligned with the only air exchange hole 1212. Therefore, blind installation is possible.

[0082] Please refer to Figure 8 and Figure 9 ,Figure 8 It is a cross-sectional schematic diagram of another embodiment of the heating element provided by the present application. Figure 9 It is Figure 8 A simplified assembly structure diagram of the heating element provided, the seal, and the liquid storage cavity.

[0083] In one embodiment, referring to Figure 8 , the atomization area 124 of the heating element 12 and the electrode 123 are symmetrically arranged about the geometric center of the dense matrix 121 on the dense matrix 121. Only one air exchange hole 1212 is provided on the dense matrix 121, and the air exchange hole 1212 is located on the side of the positive electrode 1231 or the negative electrode 1232 away from the atomization area 124. For example, the air exchange hole 1212 is located on the side of the positive electrode 1231 away from the atomization area 124.

[0084] Figure 9 takes the example that the seal 18 is entirely arranged on the surface of the heating element 12 close to the abutting portion 110 for introduction. A liquid inlet hole 181 is provided on the seal 18 to enable the atomization area 124 of the heating element 12 to be in fluid communication with the liquid storage cavity 13. The liquid inlet hole 181 is also symmetrically arranged about the geometric center of the seal 18; in this way, even if the seal 18 is installed reversely, the corresponding position between the liquid inlet hole 181 and the atomization area 124 remains unchanged. Two first through holes 182 are provided on the seal 18, and the two first through holes 182 are symmetrically arranged along the geometric center of the seal 18. One of the two first through holes 182 is correspondingly arranged with the air exchange hole 1212 on the dense matrix 121. This structural design can solve the problem of blind installation and reduce the assembly error rate. It can be understood that the dense matrix 121 and the seal 18 are usually rectangular. Since the apertures of the air exchange hole 1212 and the first through hole 182 are very small and not easily visible to the naked eye, if only one first through hole 182 is provided on the seal 18, it is necessary to ensure that the only first through hole 182 must be aligned with the only air exchange hole 1212, that is, the seal 18 cannot be installed reversely. Two first through holes 182 that are symmetrically arranged along the geometric center of the seal 18 are provided on the seal 18. Even if the seal 18 is installed reversely, there is always one first through hole 182 aligned with the only air exchange hole 1212. Therefore, blind installation is possible.

[0085] Please refer to Figure 10 , Figure 10 It is a three-dimensional structural schematic diagram of another embodiment of the heating element provided by the present application.

[0086] In one embodiment, referring to Figure 10, the atomization area 124 of the heating element 12 and the electrode 123 are symmetrically arranged on the dense substrate 121 with respect to the geometric center of the dense substrate 121. Two air exchange holes 1212 are symmetrically arranged on the dense substrate 121 along the geometric center of the dense substrate 121. One air exchange hole 1212 is located on the side of the positive electrode 1231 away from the atomization area 124, and the other air exchange hole 1212 is located on the side of the negative electrode 1232 away from the atomization area 124. Preferably, the dense substrate 121 is rectangular, and the two air exchange holes 1212 are arranged on the midline in the length direction of the dense substrate 121.

[0087] Please refer to Figure 11 , Figure 11 is Figure 10 a schematic diagram of the assembly structure of the heating element provided, the seal, and the liquid storage cavity.

[0088] Figure 11 Taking the example that the entire seal 18 is arranged on the surface of the heating element 12 close to the abutting portion 110, a liquid inlet hole 181 is arranged on the seal 18 to enable the atomization area 124 of the heating element 12 to be in fluid communication with the liquid storage cavity 13. The liquid inlet hole 181 is also symmetrically arranged with respect to the geometric center of the seal 18. In this way, even if the seal 18 is installed reversely, the corresponding position between the liquid inlet hole 181 and the atomization area 124 remains unchanged. Optionally, first through holes 182 are arranged at both positions of the seal 18 corresponding to the two air exchange holes 1212 on the dense substrate 121, thereby forming two air exchange channels. Preferably, only one first through hole 182 (as shown in Figure 11 ) is arranged on the seal 18 corresponding to only one of the two air exchange holes 1212, thereby forming only one air exchange channel, and the problem of blind installation can be solved, and the assembly error rate can be reduced.

[0089] Please refer to Figure 12 , Figure 12 is Figure 10 a schematic diagram of the assembly structure of the heating element provided, the seal, and the abutting portion.

[0090] In an embodiment, Figure 12Taking the example where the seal 18 is entirely disposed on the surface of the heating element 12 near the abutting portion 110, a first through hole 182 is provided at the position of the seal 18 corresponding to the ventilation hole 1212. The abutting portion 110 covers the first through hole 182, and the abutting portion 110 has a second through hole 183 communicating with the first through hole 182, so that the ventilation hole 1212 communicates with the liquid storage chamber 13 through the first through hole 182 and the second through hole 183. Optionally, a coating may be provided on the hole walls of the first through hole 182 and the second through hole 183. The material of the coating has stronger wettability than the material of the seal 18, or the contact angle between the material of the coating and the aerosol generating matrix is smaller than the contact angle between the material of the seal 18 and the aerosol generating matrix; the material of the coating is one of polysiloxane and vinyl acetate, and the hydrophilicity and / or lipophilicity of these materials are better than those of silica gel and fluororubber. Optionally, a hollow protrusion 184 communicating with the second through hole 183 may be provided at the position of the abutting portion 110 corresponding to the first through hole 182. The hollow protrusion 184 is disposed in the first through hole 182 and covers the hole wall of the first through hole 182 (as Figure 11 shown); the material of the abutting portion 110 has stronger wettability than the material of the seal 18, or the contact angle between the material of the abutting portion 110 and the aerosol generating matrix is smaller than the contact angle between the material of the seal 18 and the aerosol generating matrix; the material of the abutting portion 110 is one of plastic, glass and silicon, and the hydrophilicity and / or lipophilicity of these materials are better than those of silica gel and fluororubber.

[0091] Since air bubbles are likely to adhere to the seal 18 (silica gel part or fluororubber part), by providing a coating on the hole wall of the first through hole 182 on the seal 18, or by making the abutting portion 110 (plastic part or glass part) have a hollow protrusion 184 communicating with the second through hole 183 and covering the hole wall of the first through hole 182, air bubble adhesion is avoided, thereby preventing the phenomenon of air bubble jamming and achieving a better ventilation effect.

[0092] In another embodiment, when a first through hole 182 is provided at the position of the seal 18 corresponding to the ventilation hole 1212, the abutting portion 110 and the first through hole 182 may also be misaligned, and the abutting portion 110 does not block the first through hole 182, so that the ventilation hole 1212 communicates with the liquid storage chamber 13 through the first through hole 182.

[0093] Please refer to Figure 13 , Figure 13 which is Figure 10 a schematic assembly structure diagram of another embodiment of the heating element and the seal provided.

[0094] In Figure 13Among them, the seal 18 is partially located on the surface of the heating element 12 close to the abutting portion 110, partially located on the side surface of the heating element 12, and partially located on the surface of the heating element 12 away from the abutting portion 110; that is, the seal 18 completely covers the edge of the heating element 12. A first through hole 182 is provided corresponding to the ventilation hole 1212 in the part of the seal 18 located on the surface of the heating element 12 close to the abutting portion 110, so that the ventilation hole 1212 communicates with the liquid storage cavity 13; a first through hole 182 is also provided corresponding to the ventilation hole 1212 in the part of the seal 18 located on the surface of the heating element 12 away from the abutting portion 110, so that the ventilation hole 1212 communicates with the atomization cavity 115 or the outside atmosphere, thereby realizing ventilation for the liquid storage cavity 13. Liquid holes 181 are provided in both the part of the seal 18 located on the surface of the heating element 12 close to the abutting portion 110 and the part located on the surface of the heating element 12 away from the abutting portion 110, so that the atomization area 124 is exposed. The setting method between the seal 18 and the abutting portion 110 can refer to the above introduction content and will not be elaborated here.

[0095] The above description is only the implementation mode of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present application by the same token.

Claims

1. A heating element for atomizing a liquid aerosol - generating substrate, characterized in that, Comprising: A dense matrix, on which an atomization area and a non-atomization area are provided; the atomization area has a plurality of liquid guide holes penetrating through the dense matrix for transferring the aerosol-forming matrix from one side of the dense matrix to the other side; the non-atomization area is provided with at least one ventilation hole; the aperture of the ventilation hole is larger than the aperture of the liquid guide hole; Wherein, the thickness of the dense matrix is 0.2 mm to 1 mm, the aperture of the ventilation hole is 100 μm to 200 μm, and the ventilation pressure of the ventilation hole is -600 Pa to -1200 Pa; the ventilation hole is a straight through hole.

2. The heating element according to claim 1, wherein The heating element further includes a heating element disposed in the atomization area of the dense matrix for heating and atomizing the aerosol-forming matrix.

3. The heating element according to claim 2, wherein, It further includes an electrode, the electrode is disposed in the non-atomization area of the dense matrix, and the heating element is electrically connected to the electrode; the ventilation hole is disposed on the side of the electrode away from the atomization area.

4. The heating element according to claim 3, characterized in that, The electrode includes a positive electrode and a negative electrode, the positive electrode and the negative electrode are respectively disposed on opposite sides of the atomization area; only one ventilation hole is provided on the dense matrix, and the ventilation hole is located on the side of the positive electrode or the negative electrode away from the atomization area.

5. The heating element according to claim 4, characterized in that, One of the positive electrode and the negative electrode is disposed at the edge of the dense matrix, and the other is spaced from the edge of the dense matrix; the ventilation hole is located on the side of the other of the positive electrode and the negative electrode away from the atomization area.

6. The heating element according to claim 3, wherein The electrode includes a positive electrode and a negative electrode, the positive electrode and the negative electrode are respectively disposed on opposite sides of the atomization area; two ventilation holes are symmetrically arranged at the center of the dense matrix, one ventilation hole is located on the side of the positive electrode away from the atomization area, and the other ventilation hole is located on the side of the negative electrode away from the atomization area.

7. The heating element according to claim 1, characterized in that, The non-atomization area surrounds the atomization area and is a blank area.

8. The heating element according to claim 1, characterized in that, The aperture of the liquid guide hole is 10 μm to 100 μm.

9. The heating element according to claim 1, wherein The aperture of the liquid guide hole is 15 μm to 60 μm.

10. The heating element according to claim 1, characterized in that, The ratio of the aperture of the ventilation hole to the aperture of the liquid guide hole is 1:1 to 4:

1.

11. The heating element according to claim 1, characterized in that, The material of the dense matrix is glass, dense ceramic or silicon.

12. The heating element according to claim 2, characterized in that, The heating element is a heating wire, a heating mesh or a heating film; the heating element is disposed on the surface of the dense matrix or buried inside the dense matrix.

13. An atomization component for an electronic atomization device, characterized in that, Comprising: A liquid storage cavity for storing the aerosol-forming matrix; A heating element for atomizing the aerosol-forming matrix from the liquid storage cavity; The heating element is the heating element according to any one of claims 1-12; one end of the ventilation hole is communicated with the liquid storage cavity, and the other end is communicated with the outside atmosphere.

14. The atomization component according to claim 13, wherein It further includes a seal and a holding portion; the seal is located on the side of the holding portion away from the liquid storage cavity; the seal is at least partially located between the heating element and the holding portion, and the seal is used to seal the structural gap between the heating element and the liquid storage cavity; a liquid discharge hole is provided on the seal to enable the atomization area of the heating element to be in fluid communication with the liquid storage cavity.

15. The atomization component according to claim 14, characterized in that, The seal is arranged offset from the air exchange hole so that the air exchange hole communicates with the liquid storage cavity; alternatively, the seal is provided with a first through hole at a position corresponding to the air exchange hole so that the air exchange hole communicates with the liquid storage cavity.

16. The atomization component according to claim 15, wherein The heating element is the heating element described in claim 5; the seal is provided with only one first through hole corresponding to one of the two air exchange holes.

17. The atomization component according to claim 15, characterized in that, The heating element is the heating element described in claim 3; the seal is provided with two first through holes, and the two first through holes are symmetrically arranged; one of the two first through holes is arranged corresponding to the air exchange hole.

18. The atomization component according to claim 15, characterized in that, The seal is provided with a first through hole at a position corresponding to the air exchange hole; the abutting portion is arranged offset from the first through hole, or the abutting portion has a second through hole communicating with the first through hole so that the air exchange hole communicates with the liquid storage cavity.

19. The atomization component according to claim 18, wherein A coating is provided on the pore wall of the first through hole, and the material of the coating has stronger wettability than the material of the seal, or the contact angle between the material of the coating and the aerosol-forming substrate is smaller than the contact angle between the material of the seal and the aerosol-forming substrate.

20. The atomization assembly according to claim 18, wherein, The abutting portion has a second through hole communicating with the first through hole; a hollow protrusion communicating with the second through hole is provided at a position corresponding to the first through hole of the abutting portion, and the hollow protrusion is arranged in the first through hole; the material of the abutting portion has stronger wettability than the material of the seal, or the contact angle between the material of the abutting portion and the aerosol-forming substrate is smaller than the contact angle between the material of the seal and the aerosol-forming substrate.

21. The atomization component according to claim 14, wherein, It further includes an atomization base, and the atomization base has a receiving cavity, and the heating element is arranged in the receiving cavity; The abutting portion is located on the wall of the atomization base and / or the liquid storage cavity.

22. The atomization component according to claim 13, characterized in that, The viscosity of the aerosol-forming substrate is 60 cp to 500 cp.

23. An electronic atomization device, characterized in that, It includes an atomization component and a battery component, the atomization component is the atomization component described in any one of claims 13-22, and the battery component provides energy for the operation of the atomization component.

Images