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; 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; the inlet channel and the outlet channel are both contraction-expansion pore structures; one end of the inlet channel is connected to the liquid storage chamber, and the other end is connected to the pump chamber; one end of the outlet channel is connected to the pump chamber, and the other end is connected to the atomizing core; the liquid supply assembly includes a regulating member for periodically regulating the volume of the pump chamber so that the amount of liquid flowing from the inlet channel to the pump chamber is greater than the amount of liquid flowing from the pump chamber to the inlet channel, and the amount of liquid flowing from the pump chamber to the outlet channel is greater than the amount of liquid flowing from the outlet channel to the pump chamber, thereby pumping the aerosol-generating matrix in the liquid storage chamber to the atomizing core. Through the above arrangement, active and quantitative liquid supply to the atomizing core is achieved.

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, including 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; the inlet channel and the outlet channel are both contraction-expansion pore structures; one end of the inlet channel is connected to the liquid storage chamber, and the other end is connected to the pump chamber; one end of the outlet channel is connected to the pump chamber, and the other end is connected to the atomization core; the liquid supply assembly includes an adjusting member for periodically adjusting the volume of the pump chamber, so that the amount of liquid flowing from the inlet channel to the pump chamber is greater than the amount of liquid flowing from the pump chamber to the inlet channel, and the amount of liquid flowing from the pump chamber to the outlet channel is greater than the amount of liquid flowing from the outlet channel to the pump chamber, thereby pumping the aerosol-generating matrix in the liquid storage chamber to the atomization core.

[0006] Wherein, the electronic atomization device further includes an auxiliary heating component, which heats the aerosol-generating matrix entering the pump chamber.

[0007] The auxiliary heating component heats the aerosol-generating matrix entering the pump cavity until its viscosity is reduced to below 50 cp.

[0008] The auxiliary heating component heats the aerosol-generating matrix entering the pump cavity until its viscosity is reduced to below 30 cp.

[0009] In which, the contraction and expansion hole structure is conical; the contraction port of the inlet channel is connected to the liquid storage chamber, and the expansion port of the inlet channel is connected to the pump chamber; the contraction port of the outlet channel is connected to the pump chamber, and the expansion port of the outlet channel is connected to the atomizer core; the inlet channel and the outlet channel both include a first side and a second side symmetrically arranged on the central axis cross section; the angle between the first side and the second side is 5-10 degrees.

[0010] The length of the inlet channel is L1, the size of the contraction opening of the inlet channel is W1, and L1 / W1 is 11:1-15:1; the length of the outlet channel is L2, the size of the contraction opening of the outlet channel is W2, and L2 / W2 is 11:1-15:1.

[0011] In which, the contraction and expansion hole structure is conical; the contraction port of the inlet channel is connected to the pump chamber, and the expansion port of the inlet channel is connected to the liquid storage chamber; the expansion port of the outlet channel is connected to the pump chamber, and the contraction port of the outlet channel is connected to the atomizer core; the inlet channel and the outlet channel both include a first side and a second side symmetrically arranged on the central axis cross section; the angle between the first side and the second side is 30-40 degrees.

[0012] 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.

[0013] In which, the liquid supply component also includes a base and a cover plate; the base is provided with a groove, an inlet groove and an outlet groove, and the inlet groove and the outlet groove are respectively connected to the groove; the adjusting member covers the groove, and the cover plate covers the inlet groove and the outlet groove, forming the pump chamber, the inlet channel and the outlet channel respectively.

[0014] In which, the base is also provided with a liquid inlet groove and a liquid outlet groove, the liquid inlet groove is arranged at the end of the inlet groove away from the internal space of the groove and is connected to the inlet groove, and the liquid outlet groove is arranged at the end of the outlet groove away from the internal space of the groove and is connected to the outlet groove; a liquid inlet hole is provided on the cover plate corresponding to the liquid inlet groove, and a liquid outlet hole is provided corresponding to the liquid outlet groove.

[0015] 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 auxiliary heating component to operate.

[0016] In response to the auxiliary heating component heating the aerosol-generating substrate in the liquid supply component to a preset temperature, the controller controls the regulating member to operate so as to deliver a fixed amount of aerosol-generating substrate to the atomizing core.

[0017] Wherein, the preset temperature is 30-80°C.

[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 also used to determine the puffing interval, and control the auxiliary heating component to heat the aerosol generating matrix in the liquid supply component to a preset temperature again during the puffing interval, and control the regulating member to operate to deliver a quantitative amount of aerosol generating matrix 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; the inlet channel and the outlet channel are both contraction-expansion pore structures; one end of the inlet channel is connected to the liquid storage chamber, and the other end is connected to the pump chamber; one end of the outlet channel is connected to the pump chamber, and the other end is connected to the atomization core; the liquid supply assembly includes an adjusting part for periodically adjusting the volume of the pump chamber, so that the amount of liquid flowing from the inlet channel to the pump chamber is greater than the amount of liquid flowing from the pump chamber to the inlet channel, and the amount of liquid flowing from the pump chamber to the outlet channel is greater than the amount of liquid flowing from the outlet channel to the pump chamber, thereby pumping the aerosol-generating matrix in the liquid storage chamber to the atomization core. Through the above-mentioned setting, active and quantitative liquid supply to the atomizer core is achieved, so that the atomizer core consumes the various components in the aerosol generating matrix more evenly during the atomization process; and active liquid supply is achieved through 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 2This is a simplified structural diagram of the liquid supply assembly provided in this application;

[0024] Figure 3 It is a schematic diagram of the specific structure of the liquid supply component provided in this application;

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

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

[0027] Figure 6 It is a working schematic diagram of the adjustment member provided in this application;

[0028] Figure 7 It is a schematic structural diagram of the inlet channel in the liquid supply assembly provided in this application;

[0029] Figure 8 It is a schematic structural diagram of the outlet channel in the liquid supply assembly provided in this application;

[0030] Figure 9 yes Figure 7 Provided is an analysis diagram of the angle between the first side and the second side of the entrance passage;

[0031] Figure 10 It is a working principle diagram of the liquid supply component provided by this application;

[0032] Figure 11 This is the simulation result of the liquid supply component provided by this application;

[0033] Figure 12 It is the viscosity-temperature relationship diagram of different media provided in this application;

[0034] Figure 13 This is a flow chart of the working process of the electronic atomization device provided in this application. DETAILED DESCRIPTION

[0035] 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.

[0036] 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.

[0037] 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.

[0038] See also Figure 1 , Figure 1 It is a structural schematic diagram of the electronic atomization device provided in this application.

[0039] The electronic atomization device includes a liquid storage chamber 1, an atomizing core 2, a liquid supply assembly 3, an auxiliary heating assembly 4, 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, the atomizing core 2, the liquid supply assembly 3, the auxiliary heating assembly 4, the liquid inlet channel 5, the liquid outlet channel 6, the air inlet channel 7, the battery 8, and the controller 9 are disposed in a receiving chamber 100 formed by the housing 10. The liquid storage chamber 1 is used to store the aerosol-generating substrate, the atomizing core 2 is used to atomize the aerosol-generating substrate, the liquid supply assembly 3 is used to transport the aerosol-generating substrate in the liquid storage chamber 1 to the atomizing core 2, and the auxiliary heating assembly 4 heats the aerosol-generating substrate entering the liquid supply assembly 3. 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 can generate an aerosol matrix through resistance heating atomization, microwave heating atomization, electromagnetic heating atomization, infrared heating atomization, and ultrasonic vibration atomization; preferably, the atomization core 2 includes a heating element 21 and a porous liquid-conducting element 22, and the heating element 21 is arranged on the surface of the porous liquid-conducting element 22. Optionally, the porous liquid-conducting element 22 is porous ceramic, fiber cotton, or glass fiber, and the heating element 21 is resistance heating.

[0040] Furthermore, the electronic atomization device also includes a temperature sensor (not shown), which is arranged in the liquid inlet pipe 5 and electrically connected to the controller 9, for detecting the temperature of the aerosol generating matrix entering the liquid supply component 3 and feeding back to the controller 9.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] See also Figure 2 and Figure 3 , Figure 2 This is a simplified structural diagram of the liquid supply assembly provided in this application. Figure 3 It is a schematic diagram of the specific structure of the liquid supply component provided in this application.

[0045] The liquid supply assembly 3 comprises a pump chamber 31, an inlet channel 32, and an outlet channel 33; both the inlet channel 32 and the outlet channel 33 have contraction-expansion pore structures. One end of the inlet channel 32 communicates with the liquid storage chamber 1, and the other end communicates with the pump chamber 31. One end of the outlet channel 33 communicates with the pump chamber 31, and the other end connects to the atomizer core 2. The liquid supply assembly 3 includes an adjustment member 34 for periodically adjusting the volume of the pump chamber 31, so that the amount of liquid flowing from the inlet channel 32 to the pump chamber 31 is greater than the amount of liquid flowing from the pump chamber 31 to the inlet channel 32, and the amount of liquid flowing from the pump chamber 31 to the outlet channel 33 is greater than the amount of liquid flowing from the outlet channel 33 to the pump chamber 31, thereby pumping the aerosol-generating substrate in the liquid storage chamber 1 to the atomizer core 2.

[0046] In one embodiment, the liquid supply assembly 3 specifically includes a base 35 and a cover plate 36. The adjusting member 34, base 35, and cover plate 36 cooperate to form the pump chamber 31, inlet channel 32, and outlet channel 33. Specifically, the base 35 is provided with a groove 351, an inlet slot 352, and an outlet slot 353; the adjusting member 34 covers the groove 351, and the cover plate 36 covers the inlet slot 352 and outlet slot 353, forming the pump chamber 31, inlet channel 32, and outlet channel 33, respectively. Specifically, the shape of the groove 351 is not limited, for example, it can be circular and have an annular side wall; the inlet groove 352 and the outlet groove 353 are respectively connected to the groove 351, for example, the inlet groove 352 and the outlet groove 353 are respectively arranged on opposite sides of the groove 351, and the connection between the inlet groove 352 and the outlet groove 353 and the groove 351 is a notch in the side wall of the groove 351; the shape of the adjusting member 34 matches the shape of the groove 351, and the adjusting member 34 covers the entire groove 351 to form the pump chamber 31; the cover plate 36 has a through hole 364 in the middle, and the cover plate 36 covers the inlet groove 352 and the outlet groove 353 to form the inlet channel 32 and the outlet channel 33, and exposes the adjusting member 34 to provide space for the displacement of the adjusting member 34, thereby realizing the adjustment of the volume size of the pump chamber 31.

[0047] The base 35 is further provided with a liquid inlet groove 354 and a liquid outlet groove 355. The liquid inlet groove 354 is disposed 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 disposed 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 area of ​​the liquid inlet groove 354 is larger than the cross-sectional area of ​​the expanded opening of the inlet groove 352, and the cross-sectional area of ​​the liquid outlet groove 355 is larger than the cross-sectional area of ​​the expanded opening of the outlet groove 353. Optionally, the structural dimensions of the liquid inlet groove 354 and the liquid outlet groove 355 are the same.

[0048] 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, and the liquid outlet hole 362 communicates with the liquid outlet channel 6. The liquid inlet hole 361 is designed to match the structural dimensions of the liquid inlet groove 354, while the liquid outlet hole 362 is designed to match the structural dimensions of the liquid outlet groove 355. In one embodiment, the liquid inlet hole 361 and the liquid outlet hole 362 are respectively provided on opposite sides of the through hole 364.

[0049] 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 corresponding to the plurality of first mounting holes 363. The structural dimensions of the first mounting holes 363 and the second mounting holes 356 are matched with each other, and the cover plate 36 and the base 35 are fixed together through the first mounting holes 363 and the second mounting holes 356.

[0050] Furthermore, the base 35 is provided with a sealing groove 357, which surrounds the groove 351, the inlet groove 352, the outlet groove 353, the liquid inlet groove 354, and the liquid outlet groove 355. In other words, the groove 351, the inlet groove 352, the outlet groove 353, the liquid inlet groove 354, and the liquid outlet groove 355 are located within the internal space of the pattern formed by the sealing groove 357. The liquid supply assembly 3 also includes a sealing ring 37, which is disposed in the sealing groove 357. During assembly, the adjusting member 34 covers the groove 351, and the adjusting member 24, the cover plate 36, and the sealing ring 37, which is interference-fitted in the sealing groove 357, form a closed cavity.

[0051] See also Figure 4-Figure 6 , Figure 4 It is a structural diagram of the regulating member provided in this application. Figure 5 This is the working principle diagram of the regulating member provided in this application. Figure 6 This is a working diagram of the adjustment member provided in this application.

[0052] The adjusting member 34 can be a PZT piezoelectric disc composed of a piezoelectric ceramic disc 341 and a substrate 342, or a piston, as long as it can adjust the volume of the pump chamber 31. In this embodiment, the adjusting member 34 is a PZT piezoelectric disc composed of a piezoelectric ceramic disc 341 and a substrate 342; typically, the substrate 342 is a copper disc. In a specific embodiment, the piezoelectric ceramic disc 341 and the substrate 342 are both circular in shape, with the diameter of the piezoelectric ceramic disc 341 being smaller than that of the substrate 342.

[0053] 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 5 As shown), applying an AC voltage will achieve reciprocating vibration, thereby achieving periodic adjustment of the volume of the pump chamber 31.

[0054] See also Figure 6 , 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.

[0055] See also Figure 7 and Figure 8 , Figure 7 This is a schematic diagram of the structure of the inlet channel in the liquid supply assembly provided in this application. Figure 8 It is a schematic structural diagram of the outlet channel in the liquid supply assembly provided in this application.

[0056] The inlet channel 32 and the outlet channel 33 have substantially identical dimensions. The difference lies in the fact that the expanded opening of the inlet channel 32 connects to the pump chamber 31, while the contracted opening of the outlet channel 33 connects to the pump chamber 31; alternatively, the contracted opening of the inlet channel 32 connects to the pump chamber 31, while the expanded opening of the outlet channel 33 connects to the pump chamber 31. It is understood that the cross-sections of the inlet channel 32 and the outlet channel 33 can be triangular, polygonal, circular, or irregular, as long as they form a contracting-expanding opening structure. Alternatively, the contracting-expanding openings of both the inlet channel 32 and the outlet channel 33 can be conical.

[0057] In one embodiment, the converging and expanding opening of the inlet channel 32 is conical. The converging opening of the inlet channel 32 communicates with the liquid storage chamber 1, while the expanding opening of the inlet channel 32 communicates with the pump chamber 31. The inlet channel 32 includes a first side 321 and a second side 322 symmetrically arranged along the central axis cross-section, i.e., the inlet groove 352 has two opposing sides along the central axis cross-section. The angle α between the first side 321 and the second side 322 is 5-10 degrees; optionally, the angle α between the first side 321 and the second side 322 is 7.2 degrees. The length of the inlet channel 32 is L1, and the dimension of the converging opening of the inlet channel 32 is W1. The ratio L1 / W1 is 11:1-15:1; optionally, L1 / W1 is 13:1.

[0058] The outlet channel 33 has a conical converging opening. The converging opening of the outlet channel 33 communicates with the pump chamber 31, while the expanding opening of the outlet channel 33 connects to the atomizer core 2. The outlet channel 33 includes a first side 321 and a second side 322 symmetrically arranged on a central axis cross-section, i.e., the outlet slot 353 has two opposing sides on the central axis cross-section. The angle α between the first side 321 and the second side 322 is 5-10 degrees; optionally, the angle α between the first side 321 and the second side 322 is 7.2 degrees. The outlet channel 33 has a length L2, and a dimension W2 at the converging opening of the outlet channel 33. The ratio L2 / W2 is 11:1-15:1; optionally, the ratio L2 / W2 is 13:1.

[0059] In another embodiment, the converging and expanding opening structure of the inlet channel 32 is conical; the expanding opening of the inlet channel 32 communicates with the liquid storage chamber 1, while the converging opening of the inlet channel 32 communicates with the pump chamber 31. The converging and expanding opening structures of the outlet channel 33 are both conical; the expanding opening of the outlet channel 33 communicates with the pump chamber 31, while the converging opening of the outlet channel 33 connects to the atomizer core 2. In a cross-section of the central axis, both the inlet channel 32 and the outlet channel 33 include a first side 321 and a second side 322 symmetrically arranged; the angle α between the first side 321 and the second side 322 is 30-40 degrees; optionally, the angle α between the first side 321 and the second side 322 is 35 degrees.

[0060] See also Figure 9 , Figure 9 yes Figure 7 Provided is an analysis diagram of the angle between the first side and the second side of the entrance channel.

[0061] When the angle between the first side 321 and the second side 322 is 5-10 degrees, the resistance of the liquid flowing from the contraction port to the expansion port is approximately 0.28, and the resistance of the liquid flowing from the expansion port to the contraction port is approximately 1.009; that is, under this characteristic size, the resistance of the liquid (e.g., the aerosol-generating substrate) flowing from the contraction port to the expansion port is less than the resistance of the liquid flowing from the expansion port to the contraction port. Therefore, when the contraction port of the inlet channel 32 is connected to the liquid storage chamber 1, the expansion port of the inlet channel 32 is connected to the pump chamber 31, the contraction port of the outlet channel 33 is connected to the pump chamber 31, and the expansion port of the outlet channel 33 is connected to the atomizer core 2 (when the liquid in the inlet channel 32 flows from the contraction port to the expansion port, and the liquid in the outlet channel 33 flows from the contraction port to the expansion port), the angle between the first side 321 and the second side 322 of 5-10 degrees is conducive to liquid inflow and pumping of the pump chamber 31.

[0062] When the angle between the first side 321 and the second side 322 is 30-40 degrees, the resistance of the liquid flowing from the contraction port to the expansion port is greater than 1.46, and the resistance of the liquid flowing from the expansion port to the contraction port is approximately 1.005; that is, under this characteristic dimension, the resistance of the liquid flowing from the expansion port to the contraction port is less than the resistance of the liquid flowing from the contraction port to the expansion port. Therefore, when the expansion port of the inlet channel 32 is connected to the liquid storage chamber 1, the contraction port of the inlet channel 32 is connected to the pump chamber 31, the expansion port of the outlet channel 33 is connected to the pump chamber 31, and the contraction port of the outlet channel 33 is connected to the atomizer core 2 (when the liquid in the inlet channel 32 flows from the expansion port to the contraction port, and the liquid in the outlet channel 33 flows from the expansion port to the contraction port), the angle between the first side 321 and the second side 322 of 30-40 degrees is conducive to liquid inflow and pumping of the pump chamber 31.

[0063] When the angle between the first side 321 and the second side 322 is 5-10 degrees, the resistance to liquid flow from the contracting opening to the expanding opening is 0.28, which is lower than the resistance to liquid flow from the expanding opening to the contracting opening (1.005) when the angle between the first side 321 and the second side 322 is 30-40 degrees. Furthermore, when the angle between the first side 321 and the second side 322 is 30-40 degrees, liquid wall separation occurs when liquid flows from the contracting opening to the expanding opening, causing some liquid to flow back from the expanding opening to the contracting opening. In other words, selecting an angle between the first side 321 and the second side 322 of 5-10 degrees is more conducive to liquid inflow and pumping into the pump chamber 31.

[0064] See also Figure 10 , Figure 10 This is a working principle diagram of the liquid supply component provided in this application.

[0065] The inlet channel 32 has a contraction opening that connects to the liquid storage chamber 1, while its expansion opening connects to the pump chamber 31. The outlet channel 33 has a contraction opening that connects to the pump chamber 31, while its expansion opening serves as a spray port and is connected to the atomizer core 2. By applying alternating current to the regulating member 34, the pump chamber 31 is provided with periodic positive / negative pressure, thereby achieving periodic expansion / compression of the pump chamber 31. When the pump chamber 31 is under negative pressure, the pump chamber 31 is in an expansion state, and more liquid flows into the pump chamber 31 through the inlet channel 32 than through the outlet channel 33. When the pump chamber 31 is under positive pressure, the pump chamber 31 is in a contraction state, and more liquid flows out of the pump chamber 31 through the outlet channel 33 than from the inlet channel 32. The liquid flowing out of the outlet channel 33 is sprayed through its expansion opening (spray port) onto the atomizer core 2 for atomization.

[0066] Specifically, the adjustment member 34 (PZT piezoelectric piece) is displaced upward, the volume of the pump chamber 31 increases, the pump chamber 31 is in an expanded state, and the pump chamber 31 is in a medium inflow state. During this process, the medium in the left inlet channel 32 (i.e., Inlet) flows from left to right, and the medium in the right outlet channel 33 (i.e., Outlet) flows from right to left; that is, the liquid flows from the contraction port of the inlet channel 32 to the expansion port of the inlet channel 32 to enter the pump chamber 31, and the liquid flows from the expansion port of the outlet channel 33 to the contraction port of the outlet channel 33 to enter the pump chamber 31. Furthermore, although the liquid enters the pump chamber 31 from the inlet channel 32 and the outlet channel 33, the resistance when the liquid flows from the contraction port to the expansion port is less than the resistance when the liquid flows from the expansion port to the contraction port. More liquid flows into the inlet channel 32 than into the outlet channel 33, and the liquid mainly enters the pump chamber 31 from the inlet channel 32.

[0067] Conversely, when the adjustment member 34 (PZT piezoelectric plate) moves downward, the volume of the pump chamber 31 decreases, and the pump chamber 31 enters a contracted state. The pump chamber 31 is in a medium-pumping state. During this process, the medium in the left inlet channel 32 (i.e., Inlet) flows from right to left, and the medium in the right outlet channel 33 (i.e., Outlet) flows from left to right. In other words, the liquid in the pump chamber 31 flows from the expanded opening of the inlet channel 32 to the contracted opening of the inlet channel 32, entering the liquid storage chamber 1, and the liquid in the pump chamber 31 flows from the contracted opening of the outlet channel 33 to the expanded opening of the outlet channel 33, entering the atomizer core 2. Furthermore, although liquid is pumped out of the pump chamber 31 in both the inlet channel 32 and the outlet channel 33, the resistance to liquid flowing from the contracted opening to the expanded opening is less than the resistance to liquid flowing from the expanded opening to the contracted opening. Therefore, more liquid flows out of the outlet channel 33 than the inlet channel 32, and the liquid mainly enters the atomizer core 2 from the outlet channel 33.

[0068] 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.

[0069] See also Figure 11 , Figure 11 This is the simulation result of the liquid supply component provided in this application.

[0070] Through experiments, it was found that the liquid in the left inlet channel 32 (i.e., Inlet) is larger than the liquid out, while the liquid in the right outlet channel 33 (i.e., Outlet) is larger than the liquid in, thereby achieving the goal of pumping the aerosol-generating matrix in the liquid storage chamber 1 to the atomizer core 2. Figure 11 The peak in the second cycle is when the regulating member 34 is at the maximum positive displacement, that is, the pump chamber 31 is in an expansion state, the amount of liquid entering the pump chamber 31 through the inlet channel 32 is 3.439 kg / s, and the amount of liquid entering the pump chamber 31 through the outlet channel 33 is 2.947 kg / s; the peak and valley at the junction of the second cycle and the third cycle is when the regulating member 34 is at the maximum negative displacement, that is, the pump chamber 31 is in a contraction state, the amount of liquid entering the outlet channel 33 from the pump chamber 31 is 3.443 kg / s, and the amount of liquid entering the inlet channel 32 from the pump chamber 31 is 2.94 kg / s.

[0071] See also Figure 12 , Figure 12 It is a viscosity-temperature relationship diagram of different media provided in this application.

[0072] Through experiments, it was found that different media have different viscosities at different temperatures, but their viscosity decreases with increasing temperature. Figure 12This is a viscosity-temperature relationship diagram of the aerosol generating matrix that can be atomized by some electronic atomization devices. The viscosity at room temperature is above 150cp. Since the liquid supply component 3 is a micropump, the inlet channel 32 and the outlet channel 33 are both contraction-expansion pore structures, and the viscosity of the aerosol generating matrix is ​​too high to be conducive to transportation. Therefore, the aerosol generating matrix entering the liquid supply component 3 is heated to reduce its viscosity for easy transportation; the aerosol generating matrix in the pump chamber 31 is heated to a temperature of 30-80°C, and the specific heating temperature is set according to the characteristics of the aerosol generating matrix. Optionally, the auxiliary heating component 4 heats the aerosol generating matrix entering the pump chamber 31 of the liquid supply component 3 until its viscosity is reduced to below 50cp; that is, the heating temperature of the aerosol generating matrix entering the pump chamber 31 of the liquid supply component 3 is preferably 50-80°C. Optionally, the auxiliary heating component 4 heats the aerosol-generating substrate entering the pump chamber 31 until its viscosity is reduced to below 30 cp; that is, the aerosol-generating substrate in the pump chamber 31 is preferably heated to a temperature of 60-80°C.

[0073] See also Figure 13 , Figure 13 This is a flow chart of the working process of the electronic atomization device provided in this application.

[0074] The working process of the electronic atomization device is described as follows:

[0075] 1) Preheating: Before the first inhalation, the liquid level in the liquid storage chamber 1 in the vertical direction is higher than the liquid level in the pump chamber 31 of the liquid supply component 3. When the electronic atomization device is placed vertically, the pump chamber 31 will be filled with the aerosol generating matrix. When the user wants to use the electronic atomization device, the first detection element 12 is triggered to start the electronic atomization device. In response to the start signal of the first detection element 12, the controller 9 controls the auxiliary heating component 4 to work. In other words, when the electronic atomization device is started, the controller 9 controls the battery 8 to supply power to the auxiliary heating component 4, so that the auxiliary heating component 4 heats the aerosol generating matrix in the pump chamber 31 of the liquid supply component 3, thereby reducing the viscosity of the aerosol generating matrix in the pump chamber 31 to within the working range of the liquid supply component 3.

[0076] 2) Pre-pumping: In response to the auxiliary heating assembly 4 heating the aerosol-generating substrate in the pump chamber 31 to a preset temperature, the controller 9 controls the regulating member 34 to operate to deliver a fixed amount of aerosol-generating substrate to the atomizer core 2. That is, the auxiliary heating assembly 4 heats the aerosol-generating substrate in the pump chamber 31 of the liquid supply assembly 3 to a preset temperature. 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-generating substrate to the porous liquid guide 22 of the atomizer core 2. At this point, preparations are complete, and the normal inhalation process continues. The preset temperature is 30-80°C, which is selected based on the characteristics of the aerosol-generating substrate.

[0077] 3) 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 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.

[0078] 4) Replenishment Between Puffs: The controller 9 is also used to determine the puff interval and, during the puff interval, control the auxiliary heating assembly 4 to reheat the aerosol-generating substrate entering the pump chamber 31 of the liquid supply assembly 3 to a preset temperature, and control the regulating member 34 to operate to deliver another fixed amount of aerosol-generating substrate to the atomizer core 2. In other words, after completing a puff, the controller 9 controls the battery 8 to supply power to the auxiliary heating assembly 4 to heat the aerosol-generating substrate in the pump chamber 31 of the liquid supply assembly 3 to a preset temperature. The controller 9 then controls the battery 8 to supply power to the regulating member 34 to deliver a fixed amount of aerosol-generating substrate to the atomizer core 2, preparing for the next puff.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] After the electronic atomizer device is opened for the first time, it completes the working process of 1) preheating and 2) pre-pumping liquid. The normal suction state is a cycle of 3) suction atomization and 4) oil replenishment during suction intervals. 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 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.

[0083] 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; the inlet channel and the outlet channel are both contraction-expansion pore structures; one end of the inlet channel is connected to the liquid storage chamber, and the other end is connected to the pump chamber; one end of the outlet channel is connected to the pump chamber, and the other end is connected to the atomization core; the liquid supply assembly includes an adjusting member for periodically adjusting the volume of the pump chamber, so that the amount of liquid flowing from the inlet channel to the pump chamber is greater than the amount of liquid flowing from the pump chamber to the inlet channel, and the amount of liquid flowing from the pump chamber to the outlet channel is greater than the amount of liquid flowing from the outlet channel to the pump chamber, thereby pumping the aerosol-generating matrix in the liquid storage chamber to the atomization core. Through the above-mentioned setting, active and quantitative liquid supply to the atomizer core is achieved, so that the atomizer core consumes the various components in the aerosol generating matrix more evenly during the atomization process; and active liquid supply is achieved through 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.

[0084] 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; The inlet channel and the outlet channel are both contraction-expansion hole structures; one end of the inlet channel is connected to the liquid storage chamber, and the other end is connected to the pump chamber; one end of the outlet channel is connected to the pump chamber, and the other end is connected to the atomization core; the liquid supply component includes an adjusting member for periodically adjusting the volume of the pump chamber so that the amount of liquid flowing from the inlet channel to the pump chamber is greater than the amount of liquid flowing from the pump chamber to the inlet channel, and the amount of liquid flowing from the pump chamber to the outlet channel is greater than the amount of liquid flowing from the outlet channel to the pump chamber, thereby pumping the aerosol-generating matrix in the liquid storage chamber to the atomization core; the contraction-expansion hole structure is conical; the contraction port of the inlet channel is connected to the liquid storage chamber, and the expansion port of the inlet channel is connected to the The pump chamber is connected; the contraction opening of the outlet channel is connected to the pump chamber, and the expansion opening of the outlet channel is connected to the atomizer core; the inlet channel and the outlet channel both include a first side and a second side symmetrically arranged on the central axis cross section; the angle between the first side and the second side is 5-10 degrees; or, the contraction-expansion hole structure is conical; the contraction opening of the inlet channel is connected to the pump chamber, and the expansion opening of the inlet channel is connected to the liquid storage chamber; the expansion opening of the outlet channel is connected to the pump chamber, and the contraction opening of the outlet channel is connected to the atomizer core; the inlet channel and the outlet channel both include a first side and a second side symmetrically arranged on the central axis cross section; the angle between the first side and the second side is 30-40 degrees; an auxiliary heating component, which heats the aerosol-generating substrate entering the liquid supply component; The controller is used to determine the puff interval, and control the auxiliary heating component to heat the aerosol-generating matrix in the liquid supply component to a preset temperature during the puff interval, and control the regulating member to operate so as to deliver a fixed amount of aerosol-generating matrix to the atomizing core.

2. The electronic atomization device according to claim 1, characterized in that The auxiliary heating component heats the aerosol-generating substrate entering the pump cavity until its viscosity is reduced to below 50 cp.

3. The electronic atomization device according to claim 1, characterized in that The auxiliary heating component heats the aerosol-generating substrate entering the pump cavity until its viscosity is reduced to below 30 cp.

4. The electronic atomization device according to claim 1, characterized in that The length of the inlet channel is L1, the size of the contraction opening of the inlet channel is W1, and L1 / W1 is 11:1-15:1; the length of the outlet channel is L2, the size of the contraction opening of the outlet channel is W2, and L2 / W2 is 11:1-15:

1.

5. 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.

6. The electronic atomization device according to claim 1, characterized in that The liquid supply assembly also includes a base and a cover plate; the base is provided with a groove, an inlet groove and an outlet groove, and the inlet groove and the outlet groove are respectively connected to the groove; the adjusting member covers the groove, and the cover plate covers the inlet groove and the outlet groove, forming the pump chamber, the inlet channel and the outlet channel respectively.

7. The electronic atomization device according to claim 6, characterized in that: The base is also provided with a liquid inlet groove and a liquid outlet groove, the liquid inlet groove is arranged at the end of the inlet groove away from the internal space of the groove and is connected to the inlet groove, and the liquid outlet groove is arranged at the end of the outlet groove away from the internal space of the groove and is connected to the outlet groove; the cover plate is provided with a liquid inlet hole corresponding to the liquid inlet groove, and a liquid outlet hole is provided corresponding to the liquid outlet groove.

8. The electronic atomization device according to claim 1, characterized in that 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 auxiliary heating component to operate.

9. The electronic atomization device according to claim 8, characterized in that: In response to the auxiliary heating component heating the aerosol-generating substrate in the liquid supply component to a preset temperature, the controller controls the regulating member to operate so as to deliver a fixed amount of aerosol-generating substrate to the atomizing core.

10. The electronic atomization device according to claim 9, characterized in that: The preset temperature is 30-80°C.

11. The electronic atomization device according to claim 9, 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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