Electronic atomization device

Abstract

The present application discloses an electronic atomization device, comprising a liquid storage chamber, an atomizing core and a liquid supply assembly; the liquid storage chamber is used to store an aerosol generating matrix, and the atomizing core is used to atomize the aerosol generating matrix; the liquid supply assembly has a pump chamber, an inlet channel and an outlet channel; one end of the inlet channel is connected to the pump chamber, and the other end is connected to the liquid storage chamber; one end of the outlet channel is connected to the pump chamber, and the other end is connected to the atomizing core; the inlet channel is provided with a first valve to control the aerosol generating matrix to flow from the liquid storage chamber to the pump chamber in one direction, and the outlet channel is provided with a second valve to control the aerosol generating matrix to flow from the pump chamber to the atomizing core in one direction; the liquid supply assembly includes an adjusting member for adjusting the volume of the pump chamber, thereby pumping the aerosol generating matrix in the liquid storage chamber to the atomizing core. Through the above-mentioned arrangement, directional liquid supply of the liquid supply assembly is achieved; the adjusting member adjusts the volume of the pump chamber to achieve active and quantitative liquid supply to the atomizing core, so that the atomizing core consumes each component in the aerosol generating matrix more evenly.

Description

Technical Field

[0001] The present application relates to the technical field of atomizers, and in particular to an electronic atomization device. Background Art

[0002] Most existing liquid supply technologies for electronic atomizers rely on passive liquid supply, using negative pressure from suction combined with liquid absorption through porous ceramic or cotton wicks. However, the capillary action of the porous ceramic or cotton wick results in uneven delivery of the various components of the aerosol-generating matrix. Furthermore, due to the negative pressure in the liquid storage chamber, the delivery volume of the aerosol-generating matrix cannot be precisely controlled, which can affect the taste and reduce the user experience.

[0003] Based on this, a liquid supply technology using a micropump was proposed. However, the existing micropumps are all valved micropumps. The valve plates in the valved micropumps have life risks and corrosion resistance risks, and the life and safety of the micropump cannot be guaranteed. Summary of the Invention

[0004] In view of this, the present application provides an electronic atomization device to solve the technical problem in the prior art of how to achieve quantitative liquid supply and ensure the life and safety of the micropump.

[0005] In order to solve the above technical problems, the first technical solution provided in this application is: to provide an electronic atomization device, comprising: a liquid storage chamber, an atomization core, and a liquid supply assembly; the liquid storage chamber is used to store an aerosol generating matrix; the atomization core is used to atomize the aerosol generating matrix; the liquid supply assembly has a pump chamber, an inlet channel, and an outlet channel; one end of the inlet channel is connected to the pump chamber, and the other end is connected to the liquid storage chamber; one end of the outlet channel is connected to the pump chamber, and the other end is connected to the atomization core; the inlet channel is provided with a first valve to control the aerosol generating matrix to flow unidirectionally from the liquid storage chamber to the pump chamber; the outlet channel is provided with a second valve to control the aerosol generating matrix to flow unidirectionally from the pump chamber to the atomization core; the liquid supply assembly includes an adjusting member for periodically adjusting the volume of the pump chamber, thereby pumping the aerosol generating matrix in the liquid storage chamber to the atomization core.

[0006] Wherein, the first valve and the second valve are both electronically controlled mechanical valves or one-way valves.

[0007] Wherein, a first Tesla structure is provided on the inlet channel to form the first valve; and a second Tesla structure is provided on the outlet channel to form the second valve.

[0008] Among them, one end of the inlet channel used to connect to the pump chamber is set as a first constriction structure to form the first valve; one end of the outlet channel used to connect to the pump chamber is set as a second constriction structure to form the second valve.

[0009] The inlet channel includes a first section of the inlet channel and a second section of the inlet channel, the cross-sectional area of ​​the first section of the inlet channel is larger than the cross-sectional area of ​​the second section of the inlet channel, thereby forming the first constricted structure; the side of the first section of the inlet channel close to the pump chamber is flush with or tangent to the side of the second section of the inlet channel close to the pump chamber;

[0010] The outlet channel includes a first section outlet channel and a second section outlet channel, the cross-sectional area of ​​the first section outlet channel is larger than the cross-sectional area of ​​the second section outlet channel, thereby forming the second necking structure; the first section outlet channel and the second section outlet channel are coaxially arranged.

[0011] Wherein, the first necking structure is a tapered structure;

[0012] The outlet channel includes a first section outlet channel and a second section outlet channel, the cross-sectional area of ​​the first section outlet channel is larger than the cross-sectional area of ​​the second section outlet channel, thereby forming the second necking structure; the first section outlet channel and the second section outlet channel are coaxially arranged.

[0013] Wherein, the movement direction of the regulating member is parallel or perpendicular to the flow direction of the aerosol generating substrate into the pump chamber.

[0014] In which, the liquid supply component includes two inlet channels, the two inlet channels and the outlet channel intersect at one place and are connected to the pump chamber through a connecting channel; the two inlet channels are symmetrically arranged along the outlet channel and are located on both sides of the intersection of the two inlet channels and the outlet channels.

[0015] Wherein, the connecting channel is a conical structure.

[0016] It also includes a controller and a battery; the regulating member includes a piezoelectric ceramic sheet and a substrate, and the controller controls the battery to apply alternating current to the piezoelectric ceramic sheet and the substrate to enable the pump chamber to achieve periodic expansion / compression.

[0017] It also includes a controller and a first detection element; in response to a start signal from the first detection element, the controller controls the adjustment member to operate so as to deliver a quantitative amount of aerosol-generating matrix to the atomization core.

[0018] Wherein, a second detection element is further included; after the controller controls the adjustment member to operate to deliver a quantitative aerosol-generating matrix to the atomization core, the controller controls the atomization core to operate in response to a detection signal of the second detection element.

[0019] The controller is further configured to determine a puffing interval and control the regulating member to operate during the puffing interval so as to deliver a quantitative amount of aerosol-generating substrate to the atomizing core again.

[0020] Beneficial effects of the present application: Different from the prior art, the electronic atomization device of the present application includes a liquid storage chamber, an atomization core and a liquid supply assembly; the liquid storage chamber is used to store an aerosol generating matrix; the atomization core is used to atomize the aerosol generating matrix; the liquid supply assembly has a pump chamber, an inlet channel and an outlet channel; one end of the inlet channel is connected to the pump chamber, and the other end is connected to the liquid storage chamber; one end of the outlet channel is connected to the pump chamber, and the other end is connected to the atomization core; the inlet channel is provided with a first valve to control the aerosol generating matrix to flow unidirectionally from the liquid storage chamber to the pump chamber; the outlet channel is provided with a second valve to control the aerosol generating matrix to flow unidirectionally from the pump chamber to the atomization core; the liquid supply assembly includes an adjusting part for adjusting the volume of the pump chamber, thereby pumping the aerosol generating matrix in the liquid storage chamber to the atomization core. By arranging a first valve on the inlet channel and a second valve on the outlet channel, directional liquid supply of the liquid supply component is achieved; by arranging an adjustment member to adjust the size of the pump chamber volume, active and quantitative liquid supply to the atomization core is achieved, so that the atomization core consumes the various components in the aerosol generating matrix more evenly during the atomization process; and the active liquid supply is achieved by the above-mentioned liquid supply component, which improves the durability and safety of the liquid supply, and is conducive to improving the performance of the electronic atomization device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1 It is a structural schematic diagram of the electronic atomization device provided by this application;

[0023] Figure 2 This is a simplified structural diagram of the liquid supply assembly provided in this application;

[0024] Figure 3 It is a structural diagram of the regulating member provided in this application;

[0025] Figure 4 It is a working principle diagram of the regulating member provided in this application;

[0026] Figure 5 It is a working schematic diagram of the adjustment member provided in this application;

[0027] Figure 6a This is a simplified structural diagram of the first embodiment of the liquid supply assembly provided by this application;

[0028] Figure 6b This is a simplified structural diagram of the second embodiment of the liquid supply assembly provided by this application;

[0029] Figure 7 yes Figure 6a A schematic diagram of the structure of the liquid supply assembly provided;

[0030] Figure 8 It is a working principle diagram of the liquid supply component provided by this application;

[0031] Figure 9a yes Figure 6a A velocity cloud diagram of the pump chamber of the liquid supply assembly in a contracted state is provided;

[0032] Figure 9b yes Figure 6a Streamlines of the pump chamber of the provided liquid supply assembly in a contracted state;

[0033] Figure 9c yes Figure 6a A velocity cloud diagram of the pump cavity expansion state of the provided liquid supply assembly;

[0034] Figure 9d yes Figure 6a A streamline diagram of the pump chamber of the liquid supply assembly in an expanded state is provided;

[0035] Figure 10 yes Figure 6a and Figure 6b The simulation results of the liquid supply component provided;

[0036] Figure 11 This is a simplified structural diagram of the third embodiment of the liquid supply assembly provided by this application;

[0037] Figure 12 This is a simplified structural diagram of a fourth embodiment of the liquid supply assembly provided by the present application;

[0038] Figure 13 yes Figure 11 The simulation results of the liquid supply component provided;

[0039] Figure 14 yes Figure 11 Another simulation result diagram of the liquid supply component provided;

[0040] Figure 15 yes Figure 12 The simulation results of the liquid supply component provided;

[0041] Figure 16 This is a simplified structural diagram of a fifth embodiment of the liquid supply assembly provided by the present application;

[0042] Figure 17 This is an analysis diagram of the angle of the cone structure provided by this application;

[0043] Figure 18 This is a flow chart of the working process of the electronic atomization device provided in this application. DETAILED DESCRIPTION

[0044] The present application will be further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only intended to illustrate the present application and are not intended to limit the scope of the present application. Similarly, the following examples are only some examples of the present application and not all examples. All other examples obtained by those of ordinary skill in the art without creative work are intended to fall within the scope of protection of this application.

[0045] The terms "first," "second," and "third" in this application are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of such features. In the description of this application, "multiple" means at least two, for example, two, three, etc., unless otherwise specifically defined. All directional indications in the embodiments of this application (such as up, down, left, right, front, back...) are only used to explain the relative positional relationship, movement, etc. between the components under a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The terms "including" and "having" in the embodiments of this application and any variations thereof are intended to cover non-exclusive inclusions. 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 may optionally include steps or units that are not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0046] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0047] See also Figure 1 , Figure 1 It is a structural schematic diagram of the electronic atomization device provided in this application.

[0048] The electronic atomization device includes a liquid storage chamber 1, an atomizing core 2, a liquid supply assembly 3, a liquid inlet channel 5, a liquid outlet channel 6, an air inlet channel 7, a battery 8, a controller 9, and a housing 10. The liquid storage chamber 1, atomizing core 2, liquid supply assembly 3, liquid inlet channel 5, liquid outlet channel 6, air inlet channel 7, battery 8, and controller 9 are disposed within a receiving chamber 100 formed by the housing 10. The liquid storage chamber 1 is used to store aerosol-generating substrate, the atomizing core 2 is used to atomize the aerosol-generating substrate, and the liquid supply assembly 3 is used to transport the aerosol-generating substrate from the liquid storage chamber 1 to the atomizing core 2. The liquid inlet channel 5 connects the liquid storage chamber 1 and the liquid supply assembly 3, and the liquid outlet channel 6 connects the liquid supply assembly 3 and the atomizing core 2. Among them, the atomization core 2 includes a heating element 21 and a porous liquid-conducting element 22. The heating element 21 is arranged on the surface of the porous liquid-conducting element 22. The heating element 21 can generate an aerosol matrix through resistance heating atomization, microwave heating atomization, electromagnetic heating atomization, and ultrasonic vibration atomization; optionally, the porous liquid-conducting element 22 is porous ceramic, and the heating element 21 is resistance heating.

[0049] The air inlet channel 7 is connected to the outside atmosphere. When a user draws in air, the outside air enters the electronic atomizer device through the air inlet channel 7 and carries the aerosol atomized by the atomizer core 2 to be inhaled by the user. To ensure smooth liquid discharge from the liquid storage chamber 1, the electronic atomizer device also includes a ventilation channel 11; one end of the ventilation channel 11 is connected to the liquid storage chamber 1, and the other end is connected to the air inlet channel 7, ensuring that the air pressure in the liquid storage chamber 1 is balanced with that of the outside atmosphere. The battery 8, atomizer core 2, and liquid supply assembly 3 are electrically connected to a controller 9, which controls the battery 8 to supply power to the atomizer core 2 and the liquid supply assembly 3.

[0050] In order to facilitate the startup of the electronic atomization device, a first detection element 12 is also included. The first detection element 12 is arranged on the shell 10, and the first detection element 12 is electrically connected to the controller 9. That is to say, after the first detection element 12 is triggered, the controller 9 controls the operation of the liquid supply component 3 and the atomization core 2. The first detection element 12 can be a mechanical button or a touch button, which is arranged in a position convenient for the user to touch, such as on the side wall of the shell 10. It can be understood that the first detection element 12 can also be set to start the electronic atomization device by voice control or light control. The specific startup method can be designed as needed, and this application does not limit this.

[0051] The electronic atomization device also includes a second detection element (not shown); optionally, the second detection element is an airflow sensor, which is electrically connected to the controller 9. The airflow sensor detects the suction negative pressure, and the controller 9 controls the operation of the atomization core 2; the airflow sensor can be a microphone or a negative pressure sensor, and can be designed as needed.

[0052] See also Figure 2 , Figure 2 It is a simplified structural diagram of the liquid supply assembly provided in this application.

[0053] The liquid supply assembly 3 has a pump chamber 31, an inlet channel 32 and an outlet channel 33; one end of the inlet channel 32 is connected to the pump chamber 31, and the other end is connected to the liquid storage chamber 1; one end of the outlet channel 33 is connected to the pump chamber 31, and the other end is connected to the atomizer core 2; the inlet channel 32 is provided with a first valve 323, the first valve 323 controls the unidirectional flow of the aerosol generating substrate from the liquid storage chamber 1 to the pump chamber 31; the outlet channel 33 is provided with a second valve 331, the second valve 331 controls the unidirectional flow of the aerosol generating substrate from the pump chamber 31 to the atomizer core 2; the liquid supply assembly 3 includes a regulating member 34 for periodically adjusting the volume of the pump chamber 31, thereby pumping the aerosol generating substrate in the liquid storage chamber 1 to the atomizer core 2.

[0054] See also Figure 3-Figure 5 , Figure 3 It is a structural diagram of the regulating member provided in this application. Figure 4 This is the working principle diagram of the regulating member provided in this application. Figure 5 This is a working diagram of the adjustment member provided in this application.

[0055] The regulating member 34 can be a PZT piezoelectric piece composed of a piezoelectric ceramic piece 341 and a substrate 342, or a piston, which can adjust the volume of the pump chamber 31. In this embodiment, the regulating member 34 is a PZT piezoelectric piece composed of a piezoelectric ceramic piece 341 and a substrate 342 (such as Figure 3 Typically, the substrate 342 is a copper sheet. In a specific embodiment, the piezoelectric ceramic sheet 341 and the substrate 342 are both circular in shape, and the diameter of the piezoelectric ceramic sheet 341 is smaller than the diameter of the substrate 342.

[0056] Applying a voltage between the piezoelectric ceramic piece 341 and the substrate 342 causes the PZT piezoelectric piece to undergo longitudinal bending displacement (e.g. Figure 4 As shown), applying an AC voltage will achieve reciprocating vibration, thereby achieving periodic adjustment of the volume of the pump chamber 31.

[0057] See also Figure 5 , the PZT piezoelectric piece moves from the positive maximum displacement state to the negative maximum displacement state. During this process, the pump chamber 31 is continuously compressed, and the medium in the pump chamber 31 is continuously pumped out. The state of the pump chamber 31 corresponding to the PZT piezoelectric piece moving from the equilibrium position (y=0) to the positive maximum displacement and the PZT piezoelectric piece moving from the negative maximum displacement to the equilibrium position is continuous expansion. During this process, the pump chamber 31 is in the state of sucking in the medium. The compression / expansion state of the pump chamber 31 is periodic with the sinusoidal signal to realize the unidirectional operation of the liquid supply component 3. Specifically, the controller 9 controls the battery 8 to apply alternating current to the piezoelectric ceramic piece 341 and the substrate 342 to enable the pump chamber 31 to achieve periodic expansion / compression.

[0058] See also Figure 6a 、 Figure 6b and Figure 7 , Figure 6a This is a simplified structural diagram of the first embodiment of the liquid supply assembly provided in this application. Figure 6b This is a simplified structural diagram of the second embodiment of the liquid supply assembly provided in this application. Figure 7 yes Figure 6a A schematic diagram of the structure of the liquid supply component is provided.

[0059] In a specific implementation, the movement direction of the regulating member 34 is parallel or perpendicular to the flow direction of the aerosol generating substrate flowing into the pump chamber 31. In other words, the regulating member 34 can be set so that the movement direction of the regulating member 34 is perpendicular to the flow direction of the aerosol generating substrate flowing into the pump chamber 31, and the liquid supply component 3 is a planar structure (such as Figure 6a The regulating member 34 can be set to a direction of movement of the regulating member 34 and the flow direction of the aerosol generating matrix into the pump chamber 31 is parallel, the liquid supply component 3 is an axisymmetric structure (such as Figure 6b shown).

[0060] When the liquid supply component 3 is a planar structure, see Figure 7 The liquid supply assembly 3 further includes a base 35 and a cover plate 36. The adjusting member 34, the base 35, and the cover plate 36 cooperate to form the pump chamber 31, the inlet channel 32, and the outlet channel 33. Specifically, the base 35 is provided with a groove 351, an inlet groove 352, and an outlet groove 353. The adjusting member 34 covers the groove 351, and the cover plate 36 covers the inlet groove 352 and the outlet groove 353, forming the pump chamber 31, the inlet channel 32, and the outlet channel 33, respectively.

[0061] The base 35 is further provided with a liquid inlet groove 354 and a liquid outlet groove 355. The liquid inlet groove 354 is provided at the end of the inlet groove 352 away from the interior space of the groove 351 and is in communication with the inlet groove 352. The liquid outlet groove 355 is provided at the end of the outlet groove 353 away from the interior space of the groove 351 and is in communication with the outlet groove 353. In one embodiment, the cross-sectional shape and dimensions of the liquid inlet groove 354 are the same as the cross-sectional shape and dimensions of the inlet groove 352 near the end of the liquid inlet groove 354, and the cross-sectional shape and dimensions of the liquid outlet groove 355 are the same as the cross-sectional shape and dimensions of the outlet groove 353 near the end of the liquid outlet groove 355.

[0062] The cover plate 36 is provided with a liquid inlet hole 361 corresponding to the liquid inlet groove 354, and a liquid outlet hole 362 corresponding to the liquid outlet groove 355. The liquid inlet hole 361 communicates with the liquid inlet channel 5, thereby connecting to the liquid storage chamber 1; the liquid outlet hole 362 communicates with the liquid outlet channel 6, thereby connecting to the atomizer core 2. The liquid inlet hole 361 is designed to match the structural dimensions of the liquid inlet groove 354, and the liquid outlet hole 362 is designed to match the structural dimensions of the liquid outlet groove 355.

[0063] A plurality of first mounting holes 363 are provided on the periphery of the cover plate 36, and a plurality of second mounting holes 356 are provided on the base 35 in locations corresponding to the plurality of first mounting holes 363. The first mounting holes 363 and the second mounting holes 356 are designed to match the structural dimensions of the first mounting holes 363 and the second mounting holes 356, and the cover plate 36 and the base 35 are fixed together through the first mounting holes 363 and the second mounting holes 356. The cover plate 36 is also provided with a through hole 364 to expose the adjustment member 34, providing space for the adjustment member 34 to move, thereby adjusting the volume of the pump chamber 31.

[0064] See also Figure 6a-6b In this embodiment, the liquid supply assembly 3 includes two inlet channels 32. The two inlet channels 32 and the outlet channel 33 converge at a point and connect to the pump chamber 31 through a connecting channel 37. The two inlet channels 32 are symmetrically arranged along the outlet channel 33, located on either side of the intersection. The symmetrical arrangement of the two inlet channels 32 along the outlet channel 33 helps maintain the balance of the liquid supply assembly 3. The arrangement and number of the inlet channels 32 and outlet channels 33 can be selected as needed to ensure that the liquid in the inlet channels 32 flows into the pump chamber 31 and the liquid in the outlet channels 33 flows out of the pump chamber 31. Furthermore, the connecting channel 37 can be configured as a tapered structure to reduce resistance to liquid flow into or out of the pump chamber 31, ensuring smoother liquid flow into and out of the pump chamber 31. Optionally, the end of the connecting channel 37 facing away from the pump chamber 31 is tapered. Specifically, a connecting groove 356 is provided on the base 35, and a cover plate 36 covers the connecting groove 356 to form the connecting channel 37.

[0065] When the liquid supply assembly 3 is an axisymmetric structure, the structures of the base 35 and the cover plate 36 in the liquid supply assembly 3 are changed accordingly, which will not be described in detail.

[0066] In one embodiment, the first valve 323 and the second valve 331 can both be electronically controlled mechanical valves or one-way valves, which can enable the liquid in the inlet channel 32 to flow from the liquid storage chamber 1 to the pump chamber 31, and the liquid in the outlet channel 33 to flow from the pump chamber 31 to the atomizer core 2. Specifically, when the first valve 323 and the second valve 331 are both electronically controlled mechanical valves, when the pump chamber 31 expands, the first valve 323 opens and the second valve 331 closes; when the pump chamber 31 compresses, the first valve 323 closes and the second valve 331 opens. When the first valve 323 and the second valve 331 are both one-way valves, such as silicone one-way valves, when the pump chamber 31 expands, the first valve 323 opens and the second valve 331 closes; when the pump chamber 31 compresses, the first valve 323 closes and the second valve 331 opens.

[0067] In another embodiment, the first valve 323 and the second valve 331 may be Tesla valves or structures similar to Tesla valves, which can ensure that the liquid in the inlet channel 32 flows from the liquid storage chamber 1 to the pump chamber 31, and the liquid in the outlet channel 33 flows from the pump chamber 31 to the atomizer core 2. This application describes the valve-like structures that form the first valve 323 and the second valve 331.

[0068] See also Figure 6a In the first embodiment of the liquid supply assembly 3, a first Tesla structure is provided on the inlet channel 32 to form a first valve 323; and a second Tesla structure is provided on the outlet channel 33 to form a second valve 331. Figure 6b In the second embodiment of the liquid supply assembly 3 , a first Tesla structure is provided on the inlet channel 32 to form a first valve 323 ; and a second Tesla structure is provided on the outlet channel 33 to form a second valve 331 . Figure 6a and Figure 6b The difference between the provided liquid supply component 3 is that the movement direction of the adjusting member 34 in the first embodiment is perpendicular to the flow direction of the aerosol generating matrix flowing into the pump chamber 31, and the movement direction of the adjusting member 34 in the second embodiment is parallel to the flow direction of the aerosol generating matrix flowing into the pump chamber 31; regardless of whether the movement direction of the adjusting member 34 is parallel to the flow direction of the aerosol generating matrix flowing into the pump chamber 31, or the movement direction of the adjusting member 34 is perpendicular to the flow direction of the aerosol generating matrix flowing into the pump chamber 31, the principles of liquid entry and pumping in the pump chamber 31 are the same. This application introduces the working principle of the liquid supply component 3 when the movement direction of the adjusting member 34 is perpendicular to the flow direction of the aerosol generating matrix flowing into the pump chamber 31.

[0069] See also Figure 8 、 Figure 9a 、 Figure 9b 、 Figure 9c 、 Figure 9d , Figure 8 This is the working principle diagram of the liquid supply component provided in this application. Figure 9a yes Figure 6a The velocity cloud diagram of the pump cavity contraction state of the liquid supply component provided, Figure 9b yes Figure 6a Provided is a streamline diagram of the contraction state of the pump chamber of the liquid supply component. Figure 9c yes Figure 6a The velocity cloud diagram of the pump cavity expansion state of the liquid supply component provided, Figure 9d yes Figure 6a A streamline diagram of the pump chamber expansion state of the liquid supply component is provided.

[0070] By applying alternating current to the regulating member 34 to provide periodic positive / negative pressure to the pump chamber 31, the pump chamber 31 is periodically expanded / compressed. When the pump chamber 31 is under negative pressure, the pump chamber 31 is in an expanded state, and more liquid flows into the pump chamber 31 through the inlet channel 32 than flows into the pump chamber 31 through the outlet channel 33. When the pump chamber 31 is under positive pressure, the pump chamber 31 is in a compressed state, and more liquid flows out of the pump chamber 31 through the outlet channel 33 than flows out of the pump chamber 31 through the inlet channel 32. The liquid flowing out of the outlet channel 33 is sprayed onto the atomizer core 2 for atomization.

[0071] Specifically, the adjustment member 34 is displaced upward (the PZT piezoelectric piece moves from the equilibrium position to the positive maximum displacement and the PZT piezoelectric piece moves from the negative maximum displacement to the equilibrium position), the volume of the pump chamber 31 increases, the pump chamber 31 is in an expansion state, and the pump chamber 31 is in a medium inflow state. At this time, the arc surface A of the first Tesla valve generates a vortex, which is the same direction as the liquid flowing into the pump chamber 31; the arc surface B of the second Tesla valve generates a vortex, which is opposite to the direction of the liquid flowing into the pump chamber 31, preventing the medium from flowing into the pump chamber 31 from the outlet channel 33. Furthermore, although when the pump chamber 31 is in an expansion state, liquid enters the pump chamber 31 from both the inlet channel 32 and the outlet channel 33, but due to the flow-blocking effect of the arc surface B, the liquid mainly enters the pump chamber 31 from the inlet channel 32, and the amount of liquid entering the pump chamber 31 from the outlet channel 33 is very small.

[0072] Conversely, the adjustment member 34 moves downward (the PZT piezoelectric piece moves from the maximum positive displacement to the maximum negative displacement), the volume of the pump chamber 31 decreases, the pump chamber 31 is in a contracted state, and the pump chamber 31 is in a medium pumping out state. At this time, the arc surface A of the first Tesla valve generates a vortex, which is opposite to the direction of the liquid flowing into the pump chamber 31, preventing the liquid in the pump chamber 31 from flowing out from the inlet channel 32; the arc surface B of the second Tesla valve generates a vortex, which is the same as the direction of the liquid flowing into the pump chamber 31. Furthermore, although the liquid in the pump chamber 31 is pumped out from both the inlet channel 32 and the outlet channel 33 when the pump chamber 31 is in a contracted state, due to the flow-blocking effect of the arc surface A, the liquid is mainly pumped out from the outlet channel 33 into the atomizer core 2, and the amount of liquid pumped out from the inlet channel 32 is very small.

[0073] Therefore, during the periodic up-and-down motion of the regulating element 34 (PZT piezoelectric plate), the pump chamber 31 compresses and expands periodically in response to the sinusoidal signal. Within each cycle, liquid flows out of the outlet channel 33 and inflows into the inlet channel 32, achieving directional liquid transport. Because the regulating element 34 has maximum positive and negative displacements, the liquid in the pump chamber 31 is constant, thus achieving a constant supply of liquid to the atomizer core 2.

[0074] See also Figure 10 , Figure 10 yes Figure 6a and Figure 6bA plot of simulation results for the provided fluid supply component.

[0075] By implementing discovery, see Figure 10 In the simulation result graph, the horizontal axis is defined as time and the vertical axis is defined as mass flow rate. When the mass flow rate of the liquid in the outlet channel 33 is negative, the aerosol-generating substrate flows from the pump chamber 31 to the outlet channel 33; when the mass flow rate of the liquid in the outlet channel 33 is positive, the aerosol-generating substrate flows from the outlet channel 33 to the pump chamber 31; that is, the portion above the horizontal axis is the reflux of the outlet channel 33. Figure 10 The simulation results provided show that, Figure 6b The reflux ratio of the outlet channel 33 in the liquid supply component 3 is provided Figure 6a The outlet channel 33 of the liquid supply assembly 3 provides less backflow, which is more conducive to pumping liquid from the pump chamber 31. In other words, a configuration in which the regulating member 24 is arranged so that its movement direction is parallel to the flow direction of the aerosol-generating substrate into the pump chamber 31 is more advantageous than a configuration in which the regulating member 24 is arranged so that its movement direction is perpendicular to the flow direction of the aerosol-generating substrate into the pump chamber 31. In other words, an axisymmetric structure of the liquid supply assembly 3 is more conducive to directional liquid supply to the atomizer core 2 than a planar structure.

[0076] See also Figure 11 and Figure 12 , Figure 11 This is a simplified structural diagram of the third embodiment of the liquid supply assembly provided in this application. Figure 12 This is a simplified structural diagram of the fourth embodiment of the liquid supply assembly provided in this application.

[0077] One end of the inlet channel 32 connected to the pump chamber 31 is configured as a first constriction structure to form a first valve 323 ; one end of the outlet channel 33 connected to the pump chamber 31 is configured as a second constriction structure to form a second valve 331 .

[0078] In one embodiment, see Figure 11The direction of movement of the regulating member 34 is perpendicular to the flow direction of the aerosol generating substrate into the pump chamber 31. The inlet channel 32 includes a first section inlet channel 324 and a second section inlet channel 325. The cross-sectional area of ​​the first section inlet channel 324 is larger than the cross-sectional area of ​​the second section inlet channel 325, thereby forming a first constricted structure (i.e., forming a first valve 323). When the first section inlet channel 324 and the second section inlet channel 325 are both square, the side of the first section inlet channel 324 close to the pump chamber 31 is flush with the side of the second section inlet channel 325 close to the pump chamber 31; when the first section inlet channel 324 and the second section inlet channel 325 are both circular, the side of the first section inlet channel 324 close to the pump chamber 31 is tangent to the side of the second section inlet channel 325 close to the pump chamber 31. Through the above arrangement, a vortex is formed in region A of the inlet channel 32, which is the same as the flow direction of the liquid flowing from the inlet channel 32 to the pump chamber 31 and opposite to the flow direction of the liquid in the pump chamber 31 flowing out of the inlet channel 32. That is, the vortex formed in the region A of the first constricted structure hinders the liquid in the pump chamber 31 from flowing out of the inlet channel 32 .

[0079] The outlet channel 33 comprises a first outlet channel section 332 and a second outlet channel section 333. The cross-sectional area of ​​the first outlet channel section 332 is larger than that of the second outlet channel section 333, thereby forming a second constriction structure (i.e., forming a second valve 331). The first outlet channel section 332 and the second outlet channel section 333 are coaxially arranged. This arrangement creates a vortex in region B of the outlet channel 33, flowing in the same direction as the liquid from the pump chamber 31 to the outlet channel 33, and in the opposite direction of the liquid from the outlet channel 33 to the pump chamber 31. In other words, the vortex formed in region B of the second constriction structure hinders the flow of liquid from the outlet channel 33 into the pump chamber 31.

[0080] By providing the first constriction structure and the second constriction structure, liquid can flow into the pump chamber 31 from the inlet channel 32 and can flow out of the pump chamber 31 from the outlet channel 33 .

[0081] See also Figure 12 The movement direction of the regulating member 34 is parallel to the flow direction of the aerosol generating substrate into the pump chamber 31. Figure 12 The arrangement of the inlet channel 32 and the outlet channel 33 in the liquid supply component 3 is similar to that of the Figure 11 The inlet channel 32 and the outlet channel 33 in the provided liquid supply assembly 3 are arranged in the same manner and will not be described in detail.

[0082] See also Figure 13 , Figure 13 yes Figure 11 A plot of simulation results for the provided fluid supply component.

[0083] Through experiments, it was found that in the simulation result diagram, the horizontal axis is defined as time and the vertical axis is defined as mass flow rate. When the mass flow rate of the liquid in the outlet channel 33 is a negative value, the aerosol-generating matrix flows from the pump chamber 31 to the outlet channel 33; when the mass flow rate of the liquid in the outlet channel 33 is a positive value, the aerosol-generating matrix flows from the outlet channel 33 to the pump chamber 31; that is, the part above the horizontal axis is the reflux amount of the outlet channel 33. Providing a first constriction structure in the inlet channel 32 and a second constriction structure in the outlet channel 33 can also achieve directional liquid supply; and the reflux amount in the outlet channel 33 is particularly small, and its effect in overcoming reflux is better than providing a first Tesla valve structure in the inlet channel 32 and a second Tesla valve structure in the outlet channel 33 (such as Figure 13 Use Figure 11 The liquid supply component 3 provided was used for the experiment. Figure 14 The graph of the liquid flow rate at the outlet channel 33 over time; experimental conditions: when the regulating member 34 is in the non-operating state, the height of the pump chamber 31 is 100 μm, 20 Hz AC is applied to the regulating member 34, and the medium viscosity is 220 cp; the experimental results show that the liquid delivery rate is 12.4 mg / s (such as Figure 14 As shown, Figure 14 yes Figure 11 Another simulation result diagram of the liquid supply component provided). Use Figure 12 The liquid supply component 3 provided was used for the experiment. Figure 15 The graph of the liquid flow rate at the outlet channel 33 over time; experimental conditions: when the regulating member 34 is in the non-operating state, the height of the pump chamber 31 is 100 μm, 20 Hz AC is applied to the regulating member 34, and the medium viscosity is 220 cp; the experimental results show that the liquid delivery rate is 43.52 mg / s (such as Figure 15 As shown, Figure 15 yes Figure 12 ). This further demonstrates that an axisymmetric structure of the liquid supply assembly 3 is more conducive to directional liquid supply than a planar structure; that is, a solution in which the regulating member 24 is arranged so that the movement direction of the regulating member 34 is parallel to the flow direction of the aerosol-generating substrate into the pump chamber 31 is more advantageous than a solution in which the movement direction of the regulating member 24 is arranged so that the movement direction of the regulating member 34 is perpendicular to the flow direction of the aerosol-generating substrate into the pump chamber 31.

[0084] See also Figure 16 and Figure 17 , Figure 16 This is a simplified structural diagram of the fifth embodiment of the liquid supply assembly provided by this application. Figure 17 This is an analysis diagram of the angle size of the cone structure provided by this application.

[0085] In the fifth embodiment of the liquid supply assembly 3, the first constriction structure (i.e., the first valve 323) is a conical structure; optionally, the end of the conical structure used to connect to the pump chamber 31 is the constriction end. Figure 17 When the angle between the two side walls of the tapered structure is 5-10 degrees, the resistance to liquid flow from the constricted opening to the expanded opening is approximately 0.28, and the resistance to liquid flow from the expanded opening to the constricted opening is approximately 1.009; that is, under this characteristic dimension, the resistance to liquid flow from the constricted opening to the expanded opening is less than the resistance to liquid flow from the expanded opening to the constricted opening. When the angle between the two side walls of the tapered structure is 30-40 degrees, the resistance to liquid flow from the constricted opening to the expanded opening is greater than 1.46, and the resistance to liquid flow from the expanded opening to the constricted opening is approximately 1.005; that is, under this characteristic dimension, the resistance to liquid flow from the expanded opening to the constricted opening is less than the resistance to liquid flow from the constricted opening to the expanded opening. It is understood that the end of the tapered structure that connects to the pump chamber 31 can be either the constricted end or the expanded end. It is sufficient to ensure that the tapered structure, which is positioned near one end of the pump chamber 31, ensures that the amount of liquid flowing into the pump chamber 31 through the inlet channel 32 is greater than the amount of liquid in the pump chamber 31 that flows out through the inlet channel 32.

[0086] The outlet channel 33 comprises a first outlet channel section 332 and a second outlet channel section 333. The cross-sectional area of ​​the first outlet channel section 332 is larger than that of the second outlet channel section 333, thereby forming a second constriction structure (i.e., forming a second valve 331). The first outlet channel section 332 and the second outlet channel section 333 are coaxially arranged. This arrangement creates a vortex in region B of the outlet channel 33, flowing in the same direction as the liquid from the pump chamber 31 to the outlet channel 33, and in the opposite direction of the liquid from the outlet channel 33 to the pump chamber 31. In other words, the vortex formed in region B of the second constriction structure hinders the flow of liquid from the outlet channel 33 into the pump chamber 31.

[0087] See also Figure 18 , Figure 18 This is a flow chart of the working process of the electronic atomization device provided in this application.

[0088] The working process of the electronic atomization device is described as follows:

[0089] 1) Pre-pumping: When the user wants to use the electronic atomizer, the first detection element 12 is triggered to start the electronic atomizer. In response to the activation signal from the first detection element 12, the controller 9 controls the regulating member 34 to operate to deliver a fixed amount of aerosol-forming substrate to the atomizer core 2. In other words, the controller 9 controls the battery 8 to power the regulating member 34, causing the liquid supply assembly 3 to deliver a fixed amount of aerosol-forming substrate to the porous liquid guide 22 of the atomizer core 2. At this point, preparations are complete, and the normal inhalation process continues.

[0090] 2) Suction atomization: After the controller 9 controls the adjustment member 34 to work to deliver a fixed amount of aerosol-generating matrix to the atomizer core 2, the controller 9 controls the atomizer core 2 to work in response to the detection signal of the second detection element (for example, the suction negative pressure detected by the airflow sensor). That is, the second detection element feeds back its detection signal to the controller 9, and the controller 9 controls the battery 8 to power the heating element 21 of the atomizer core 2 according to the signal, so that the atomizer core 2 works to atomize the aerosol-generating matrix to generate aerosol, and the atomized aerosol is mixed with the air entering from the air inlet channel 7 and inhaled by the user. After the puffing action is completed, the controller 9 controls the battery 8 to stop powering the atomizer core 2, so that the heating element 21 of the atomizer core 2 stops working.

[0091] 3) Replenishment Between Puffs: The controller 9 is also used to determine the puff interval and control the adjustment member 34 to operate during the puff interval to deliver a predetermined amount of aerosol-forming substrate to the atomizer core 2. In other words, after completing a puff, the controller 9 controls the battery 8 to power the adjustment member 34 to deliver a predetermined amount of aerosol-forming substrate to the atomizer core 2, preparing for the next puff.

[0092] The puff interval is the time interval between the completion of one puff and the start of the next. In one embodiment, the puff interval rehydration method is to perform rehydration between the completion of each puff and the start of the next puff: that is, rehydration is performed once after each puff, thereby ensuring that the aerosol concentration obtained by each puff is the same. In another embodiment, the puff interval rehydration method is to perform rehydration between the completion of a predetermined number of puffs and the start of the next predetermined number of puffs, and the predetermined number of puffs is greater than one; for example, rehydration is performed once after every three puffs, thereby reducing the number of rehydration times and extending the service life of the liquid supply assembly 3.

[0093] In the method of replenishing liquid once after completing multiple puffs, the amount of liquid supplied by the liquid supply component 3 each time must be sufficient for the user to puff multiple times. Since different users consume different amounts of aerosol-generating matrix per puff, in the initial setting, the liquid supply component 3 replenishes liquid according to a pre-set frequency of replenishment between puffs. This frequency or interval is set according to the puffing habits of most users. After a period of use, the controller 9 adjusts the frequency of replenishment of the liquid supply component 3 between puffs according to the user's usage habits to prevent leakage due to excessive replenishment or dry burning due to insufficient replenishment. For example, if the average duration of each puff of a user is longer than the average duration of each puff of most users, it indicates that the average consumption of each puff of the user is greater than the average consumption of each puff of most users. Generally, if the average duration of each puff of a user is longer than the average duration of each puff of most users, the frequency of replenishment needs to be increased, otherwise, the frequency of replenishment needs to be reduced.

[0094] Furthermore, in order to avoid the liquid supply component 3 and the atomizer core 2 of the electronic atomization device working at the same time, during the process of liquid replenishment of the liquid supply component 3, if the user's puffing action is detected, the liquid replenishment is stopped and a prompt message is further issued, thereby avoiding the user's rapid puffing, and the liquid supply component 3 and the atomizer core 2 working at the same time due to insufficient puffing interval to complete one liquid replenishment.

[0095] After the electronic atomizer device is unsealed for the first time, it completes the working process of 1) pre-pumping the liquid, and the normal suction state is a cycle of 2) suction atomization and 3) oil replenishment during the suction interval. By setting a liquid supply component 3 in the electronic atomizer device, quantitative liquid supply to the atomizer core 2 is achieved, avoiding the problem of uneven transportation of aerosol generation matrix components caused by only using the porous liquid guide 22 of the atomizer core 2 to guide the liquid, so that the mouth feel of the aerosol is continuous; and there is no need to set a valve plate in the liquid supply component 3, so that the life and safety of the liquid supply component 3 are guaranteed, and the valve plate is prevented from being corroded or foreign particles are mixed into the aerosol generation matrix transported to the atomizer core 2. The liquid supply component 3 uses the suction interval to replenish the atomizer core 2, which can reduce the volume of the liquid supply component 3, which is conducive to reducing the volume of the electronic atomizer device and saving costs.

[0096] The electronic atomization device of the present application includes a liquid storage chamber, an atomization core and a liquid supply assembly; the liquid storage chamber is used to store an aerosol-generating matrix; the atomization core is used to atomize the aerosol-generating matrix; the liquid supply assembly has a pump chamber, an inlet channel and an outlet channel; one end of the inlet channel is connected to the pump chamber, and the other end is connected to the liquid storage chamber; one end of the outlet channel is connected to the pump chamber, and the other end is connected to the atomization core; the inlet channel is provided with a first valve to control the aerosol-generating matrix to flow from the liquid storage chamber to the pump chamber in one direction; the outlet channel is provided with a second valve to control the aerosol-generating matrix to flow from the pump chamber to the atomization core in one direction; the liquid supply assembly includes an adjusting member for adjusting the volume of the pump chamber, thereby pumping the aerosol-generating matrix in the liquid storage chamber to the atomization core. By arranging a first valve on the inlet channel and a second valve on the outlet channel, directional liquid supply of the liquid supply component is achieved; by arranging an adjustment member to adjust the size of the pump chamber volume, active and quantitative liquid supply to the atomization core is achieved, so that the atomization core consumes the various components in the aerosol generating matrix more evenly during the atomization process; and the active liquid supply is achieved by the above-mentioned liquid supply component, which improves the durability and safety of the liquid supply, and is conducive to improving the performance of the electronic atomization device.

[0097] The above description is only part of the embodiments of the present application and does not limit the scope of protection of the present application. Any equivalent device or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly used in other related technical fields, are also included in the scope of patent protection of this application.

Claims

1. An electronic atomization device, characterized in that: include: a liquid storage chamber for storing an aerosol-generating matrix; an atomizing core, for atomizing the aerosol-generating matrix; A liquid supply assembly having a pump chamber, an inlet channel, and an outlet channel; One end of the inlet channel is in communication with the pump chamber, and the other end is in communication with the liquid storage chamber; one end of the outlet channel is in communication with the pump chamber, and the other end is connected to the atomizer core; the inlet channel is provided with a first valve to control the unidirectional flow of the aerosol-generating substrate from the liquid storage chamber to the pump chamber; the outlet channel is provided with a second valve to control the unidirectional flow of the aerosol-generating substrate from the pump chamber to the atomizer core; the liquid supply assembly includes a regulating member for periodically adjusting the volume of the pump chamber, thereby pumping the aerosol-generating substrate in the liquid storage chamber to the atomizer core; the inlet channel is provided with a first Tesla structure to form the first valve, and the outlet channel is provided with a second Tesla structure to form the second valve; Alternatively, one end of the inlet channel for connecting to the pump chamber is configured as a first constriction structure to form the first valve, and one end of the outlet channel for connecting to the pump chamber is configured as a second constriction structure to form the second valve; wherein the inlet channel comprises a first section inlet channel and a second section inlet channel, the cross-sectional area of ​​the first section inlet channel being larger than the cross-sectional area of ​​the second section inlet channel, thereby forming the first constriction structure; or, the first constriction structure is a tapered structure, the tapered structure causing the amount of liquid flowing into the pump chamber through the inlet channel to be larger than the amount of liquid in the pump chamber flowing out of the inlet channel; the outlet channel comprises a first section outlet channel and a second section outlet channel, the cross-sectional area of ​​the first section outlet channel being larger than the cross-sectional area of ​​the second section outlet channel, thereby forming the second constriction structure; A controller and a first detection element; in response to a start signal from the first detection element, the controller controls the adjustment member to operate so as to deliver a quantitative aerosol-generating substrate to the atomizing core; the controller is further configured to determine a puff interval and control the adjustment member to operate so as to deliver a quantitative aerosol-generating substrate to the atomizing core again during the puff interval.

2. The electronic atomization device according to claim 1, characterized in that The inlet channel includes a first section of the inlet channel and a second section of the inlet channel, wherein a side of the first section of the inlet channel close to the pump chamber and a side of the second section of the inlet channel close to the pump chamber are flush or tangent to each other; The first section outlet channel and the second section outlet channel are coaxially arranged.

3. The electronic atomization device according to claim 1, characterized in that The movement direction of the regulating member is parallel or perpendicular to the flow direction of the aerosol generating substrate into the pump chamber.

4. The electronic atomization device according to claim 1, characterized in that The liquid supply component includes two inlet channels, which intersect with the outlet channel at one point and are connected to the pump chamber through a connecting channel; the two inlet channels are symmetrically arranged along the outlet channel and are located on both sides of the intersection of the two inlet channels and the outlet channel.

5. The electronic atomization device according to claim 4, characterized in that: The connecting channel is a tapered structure.

6. The electronic atomization device according to claim 1, characterized in that It also includes a controller and a battery; the regulating member includes a piezoelectric ceramic sheet and a substrate, and the controller controls the battery to apply alternating current to the piezoelectric ceramic sheet and the substrate to enable the pump chamber to achieve periodic expansion / compression.

7. The electronic atomization device according to claim 1, characterized in that It also includes a second detection element; after the controller controls the adjustment member to operate to deliver a quantitative aerosol-generating substrate to the atomization core, the controller controls the atomization core to operate in response to a detection signal from the second detection element.

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