CN115336811A - Electronic atomization device - Google Patents

Abstract

The application discloses an electronic atomization device, which comprises a liquid storage cavity, an atomization core and a liquid supply assembly; a reservoir for storing an aerosol-generating substrate; an atomising wick for atomising an aerosol-generating substrate; the liquid supply assembly has a pump chamber, an inlet passage and an outlet passage; the inlet channel and the outlet channel are both in a shrinkage and expansion hole structure; one end of the inlet channel is communicated with the liquid storage cavity, and the other end of the inlet channel is communicated with the pump cavity; one end of the outlet channel is communicated with the pump cavity, and the other end of the outlet channel is connected to the atomizing core; the liquid supply assembly comprises an adjustment member for periodically adjusting the volume of the pump chamber such that more liquid flows from the inlet passage to the pump chamber than from the pump chamber to the inlet passage and more liquid flows from the pump chamber to the outlet passage than from the outlet passage to the pump chamber, thereby pumping aerosol-generating substrate in the reservoir chamber towards the atomizing cartridge. Through the arrangement, active and quantitative liquid supply to the atomization core is realized.

Description

Electronic atomization device

Technical Field

The application relates to the technical field of atomizers, in particular to an electronic atomizing device.

Background

Most of the existing liquid supply technologies of electronic atomization devices are passive liquid supply by matching suction negative pressure with porous ceramic or cotton core liquid absorption. However, due to the capillary action of the porous ceramic or cotton core, the components of the aerosol generating substrate are not uniformly transported and are influenced by the negative pressure in the liquid storage cavity, the transportation amount of the aerosol generating substrate cannot be accurately controlled, the mouth feel is influenced, and the use experience of a user is reduced.

Based on this, the confession liquid technique of confession liquid through the micropump has been proposed, but current micropump is the valve micropump, and there are life-span risk, corrosion-resistant risk in the valve block among the valve micropump, can't guarantee the life-span and the security of micropump.

Disclosure of Invention

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

In order to solve the above technical problem, a first technical solution provided by the present application is: an electronic atomization device is provided, which comprises a liquid storage cavity, an atomization core and a liquid supply assembly; a reservoir for storing an aerosol-generating substrate; an atomising wick for atomising the aerosol-generating substrate; a liquid supply assembly having a pump chamber, an inlet passage and an outlet passage; the inlet channel and the outlet channel are both in a contraction and expansion hole structure; one end of the inlet channel is communicated with the liquid storage cavity, and the other end of the inlet channel is communicated with the pump cavity; one end of the outlet channel is communicated with the pump cavity, and the other end of the outlet channel is connected to the atomizing core; the liquid supply assembly includes an adjustment member for periodically adjusting the volume of the pump chamber such that more liquid flows from the inlet passage to the pump chamber than from the pump chamber to the inlet passage and more liquid flows from the pump chamber to the outlet passage than from the outlet passage to the pump chamber, thereby pumping aerosol-generating substrate in the reservoir chamber toward the atomizing wick.

Wherein the electronic atomising device further comprises an auxiliary heating assembly that heats aerosol-generating substrate entering the pump chamber.

Wherein the auxiliary heating assembly heats the aerosol-generating substrate entering the pump chamber to a point where its viscosity is reduced to below 50 cp.

Wherein the auxiliary heating assembly heats the aerosol-generating substrate entering the pump chamber to a point where its viscosity is reduced to below 30 cp.

Wherein the contracting and expanding pore structure is conical; the contraction port of the inlet channel is communicated with the liquid storage cavity, and the expansion port of the inlet channel is communicated with the pump cavity; the contraction port of the outlet channel is communicated with the pump cavity, and the expansion port of the outlet channel is connected to the atomizing core; the inlet channel and the outlet channel respectively comprise a first side edge and a second side edge which are symmetrically arranged on the cross section of the central shaft; the included angle between the first side edge and the second side edge is 5-10 degrees.

Wherein the length of the inlet channel is L1, the size of the contraction port of the inlet channel is W1, and L1/W1 is 11; the length of the outlet channel is L2, the size of the contraction port of the outlet channel is W2, and L2/W2 is 11.

Wherein the contracting and expanding pore structure is conical; the contraction port of the inlet channel is communicated with the pump cavity, and the expansion port of the inlet channel is communicated with the liquid storage cavity; the expansion opening of the outlet channel is communicated with the pump cavity, and the contraction opening of the outlet channel is connected to the atomizing core; the inlet channel and the outlet channel respectively comprise a first side edge and a second side edge which are symmetrically arranged on the cross section of the central shaft; the included angle between the first side edge and the second side edge is 30-40 degrees.

Wherein, also include controller and battery; the regulating part comprises a piezoelectric ceramic piece and a substrate, and the controller controls the battery to apply alternating current to the piezoelectric ceramic piece and the substrate so as to realize periodic expansion/compression of the pump cavity.

Wherein the liquid supply assembly further comprises a base and a cover; the base is provided with a groove, an inlet groove and an outlet groove, and the inlet groove and the outlet groove are respectively communicated with the groove; the regulating member covers the recess, and the cover plate covers the inlet groove and the outlet groove to form the pump chamber, the inlet passage, and the outlet passage, respectively.

The base is further provided with a liquid inlet groove and a liquid outlet groove, the liquid inlet groove is arranged at the end part, far away from the inner space of the groove, of the inlet groove and is communicated with the inlet groove, and the liquid outlet groove is arranged at the end part, far away from the inner space of the groove, of the outlet groove and is communicated with the outlet groove; the cover plate is provided with a liquid inlet hole corresponding to the liquid inlet groove and a liquid outlet hole corresponding to the liquid outlet groove.

Wherein, also include controller and first detecting element; the controller controls the auxiliary heating assembly to operate in response to an activation signal of the first detection element.

Wherein, in response to the auxiliary heating assembly heating the aerosol-generating substrate in the liquid supply assembly to a preset temperature, the controller controls the regulating member to operate to deliver a metered amount of aerosol-generating substrate to the atomizing wick.

Wherein the preset temperature is 30-80 ℃.

Wherein, also include the second detecting element; the controller controls the operation of the atomizing cartridge in response to a detection signal of the second detection element after controlling the operation of the regulating member to deliver a metered amount of aerosol-generating substrate to the atomizing cartridge.

Wherein the controller is further configured to determine a puff interval, control the auxiliary heating assembly to heat the aerosol generating substrate in the liquid supply assembly to a preset temperature again at the puff interval, and control the adjustment member to operate to deliver a metered amount of aerosol generating substrate to the atomizing wick again.

The beneficial effect of this application: different from the prior art, the electronic atomization device comprises a liquid storage cavity, an atomization core and a liquid supply assembly; a reservoir chamber for storing an aerosol-generating substrate; an atomising wick for atomising an aerosol-generating substrate; the liquid supply assembly has a pump chamber, an inlet passage and an outlet passage; the inlet channel and the outlet channel are both in a shrinkage and expansion hole structure; one end of the inlet channel is communicated with the liquid storage cavity, and the other end of the inlet channel is communicated with the pump cavity; one end of the outlet channel is communicated with the pump cavity, and the other end of the outlet channel is connected to the atomizing core; the liquid supply assembly comprises an adjustment member for periodically adjusting the volume of the pump chamber such that more liquid flows from the inlet passage to the pump chamber than from the pump chamber to the inlet passage and more liquid flows from the pump chamber to the outlet passage than from the outlet passage to the pump chamber, thereby pumping aerosol-generating substrate in the reservoir chamber towards the aerosol wick. Through the arrangement, the atomizing core is actively and quantitatively supplied with liquid, so that the atomizing core consumes all components in the aerosol generating substrate more uniformly in the atomizing process; and realize initiatively supplying liquid through above-mentioned liquid supply assembly, improved the persistence and the security that supply liquid, do benefit to the performance that improves electron atomizing device.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an electronic atomizer provided herein;

FIG. 2 is a simplified structural schematic of a liquid supply assembly provided herein;

FIG. 3 is a schematic illustration of a particular construction of a liquid supply assembly provided herein;

FIG. 4 is a schematic view of the structure of an adjustment member provided herein;

FIG. 5 is a functional schematic of an adjustment member provided herein;

FIG. 6 is a schematic view of the operation of the adjustment member provided herein;

FIG. 7 is a schematic view of a structure of an inlet passage in the liquid supply assembly provided herein;

FIG. 8 is a schematic view of an outlet passage in the liquid supply assembly provided herein;

FIG. 9 is a graph illustrating an analysis of an angle between a first side and a second side of the inlet channel provided in FIG. 7;

FIG. 10 is a schematic diagram illustrating operation of a liquid supply assembly provided herein;

FIG. 11 is a simulation result of the liquid supply assembly provided herein;

FIG. 12 is a graph of viscosity versus temperature for various media as provided herein;

fig. 13 is a flowchart of the operation process of the electronic atomization device provided by the present application.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be noted that the following examples are only illustrative of the present application, and do not limit the scope of the present application. Likewise, the following examples are only some examples and not all examples of the present application, and all other examples obtained by a person of ordinary skill in the art without any inventive work are within the scope of the present application.

The terms "first", "second" and "third" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any indication of the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise. In the embodiment of the present application, all the directional indicators (such as the upper, lower, left, right, front, and rear … …) are only used to explain the relative position relationship between the components in a specific posture (as shown in the drawing), the motion situation, and the like, and if the specific posture is changed, the directional indicator is changed accordingly. The terms "comprising" and "having," as well as any variations thereof, in the embodiments of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or may alternatively include other steps or elements inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic atomization device provided in the present application.

The electronic atomization device comprises a liquid storage cavity 1, an atomization core 2, a liquid supply component 3, an auxiliary heating component 4, a liquid inlet channel 5, a liquid outlet channel 6, an air inlet channel 7, a battery 8, a controller 9 and a shell 10. The liquid storage cavity 1, the atomizing core 2, the liquid supply component 3, the auxiliary heating component 4, the liquid inlet channel 5, the liquid outlet channel 6, the air inlet channel 7, the battery 8 and the controller 9 are arranged in an accommodating cavity 100 formed by the shell 10. Liquid storage cavity 1 is used for storing aerosol and generates the matrix, and atomizing core 2 is used for atomizing aerosol and generates the matrix, and liquid supply assembly 3 is arranged in generating the matrix with the aerosol in liquid storage cavity 1 and carries to atomizing core 2, and auxiliary heating subassembly 4 heats the aerosol that gets into in liquid supply assembly 3 and generates the matrix, and inlet channel 5 intercommunication liquid storage cavity 1 and liquid supply assembly 3, and outlet channel 6 intercommunication liquid supply assembly 3 and atomizing core 2. The atomizing core 2 can generate a substrate by resistance heating atomization, microwave heating atomization, electromagnetic heating atomization, infrared heating atomization and ultrasonic vibration atomization of aerosol; preferably, the atomizing core 2 includes a heat generating member 21 and a porous liquid guiding member 22, the heat generating member 21 is disposed on a surface of the porous liquid guiding member 22, optionally, the porous liquid guiding member 22 is made of porous ceramic, fiber cotton, or glass fiber, and the heat generating member 21 is resistance-heated.

Further, the electronic atomizer further comprises a temperature sensor (not shown) disposed in the liquid inlet conduit 5 and electrically connected to the controller 9, for detecting the temperature of the aerosol-generating substrate entering the liquid supply assembly 3 and feeding back the detected temperature to the controller 9.

The air inlet channel 7 is communicated with the external atmosphere, and when a user sucks, the external atmosphere enters the electronic atomization device through the air inlet channel 7 and carries the atomized aerosol of the atomization core 2 to be sucked by the user. In order to ensure the liquid outlet of the liquid storage cavity 1 to be smooth, the electronic atomization device also comprises a ventilation channel 11; one end of the ventilation channel 11 is communicated with the liquid storage cavity 1, and the other end of the ventilation channel is communicated with the air inlet channel 7, so that the balance between air pressure in the liquid storage cavity 1 and the outside atmosphere is ensured. The battery 8, the atomizing core 2 and the liquid supply assembly 3 are electrically connected with the controller 9, and the controller 9 controls the battery 8 to supply power to the atomizing core 2 or the liquid supply assembly 3.

In order to facilitate the starting of the electronic atomization device, the electronic atomization device further comprises a first detection element 12, the first detection element 12 is arranged on the shell 10, and the first detection element 12 is electrically connected with the controller 9. That is, after the first detecting element 12 is triggered, the controller 9 controls the liquid supply assembly 3 and the atomizing core 2 to operate. The first detecting element 12 may be a mechanical button or a touch button, and is disposed at a position convenient for a user to touch, for example, on a sidewall of the housing 10. It is understood that the first detecting element 12 may also be configured to activate the electronic atomization device by a voice control or a light control, and the specific activation manner may be designed as required, which is not limited in this application.

The electronic atomization device further comprises a second detection element (not shown); optionally, the second detection element is an airflow sensor, the airflow sensor is electrically connected with the controller 9, the airflow sensor detects suction negative pressure, and the controller 9 controls the atomizing core 2 to work; the airflow sensor can be a microphone or a negative pressure sensor and can be designed according to requirements.

Referring to fig. 2 and 3, fig. 2 is a schematic view of a simplified structure of a liquid supply assembly provided herein, and fig. 3 is a schematic view of a detailed structure of the liquid supply assembly provided herein.

The liquid supply assembly 3 has a pump chamber 31, an inlet passage 32 and an outlet passage 33; both the inlet passage 32 and the outlet passage 33 are of a constricted and expanded bore configuration. One end of the inlet channel 32 is communicated with the liquid storage cavity 1, and the other end is communicated with the pump cavity 31; one end of the outlet passage 33 communicates with the pump chamber 31, and the other end is connected to the atomizing core 2. The liquid supply assembly 3 comprises an adjustment member 34 for periodically adjusting the volume of the pump chamber 31 such that more liquid flows from the inlet passage 32 to the pump chamber 31 than from the pump chamber 31 to the inlet passage 32 and more liquid flows from the pump chamber 31 to the outlet passage 33 than from the outlet passage 33 to the pump chamber 31, thereby pumping aerosol-generating substrate in the reservoir 1 towards the atomizing wick 2.

In one embodiment, the liquid supply assembly 3 specifically includes a base 35 and a cover 36, and the adjuster 34, the base 35, and the cover 36 cooperate to form the pump chamber 31, the inlet passage 32, and the outlet passage 33. Specifically, the base 35 is provided with a groove 351, an inlet groove 352 and an outlet groove 353; the adjuster 34 covers the recess 351 and the cover plate 36 covers the inlet and outlet slots 352, 353, respectively forming the pump chamber 31, the inlet passage 32 and the outlet passage 33. Specifically, the groove 351 is not limited in shape, and may be, for example, circular and have an annular sidewall; the inlet slot 352 and the outlet slot 353 are respectively communicated with the groove 351, for example, the inlet slot 352 and the outlet slot 353 are respectively arranged at two opposite sides of the groove 351, and the communication part of the inlet slot 352 and the outlet slot 353 with the groove 351 is a gap of the side wall of the groove 351; the shape of the regulating member 34 matches the shape of the groove 351, and the regulating member 34 covers the entire groove 351 to form the pump chamber 31; the cover plate 36 has a through hole 364 formed in the middle thereof, and the cover plate 36 covers the inlet and outlet grooves 352 and 353 to form the inlet and outlet passages 32 and 33 and expose the adjuster 34 to provide a space for displacement of the adjuster 34, thereby achieving adjustment of the volume of the pump chamber 31.

The base 35 is further provided with an inlet slot 354 and an outlet slot 355, the inlet slot 354 being disposed at an end of the inlet slot 352 remote from the interior of the recess 351 and communicating with the inlet slot 352, and the outlet slot 355 being disposed at an end of the outlet slot 353 remote from the interior of the recess 351 and communicating with the outlet slot 353. In one embodiment, the cross-sectional area of the inlet channel 354 is greater than the cross-sectional area of the expanded opening of the inlet channel 352, and the cross-sectional area of the outlet channel 355 is greater than the cross-sectional area of the expanded opening of the outlet channel 353; optionally, the inlet channel 354 and the outlet channel 355 are the same size.

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 361 is communicated with the liquid inlet channel 5, and the liquid outlet 362 is communicated with the liquid outlet channel 6. The inlet opening 361 is matched with the structural size of the inlet groove 354, and the outlet opening 362 is matched with the structural size of the outlet groove 355. In one embodiment, the liquid inlet hole 361 and the liquid outlet hole 362 are disposed at opposite sides of the through hole 364, respectively.

A plurality of first mounting holes 363 are further disposed on the periphery of the cover plate 36, a plurality of second mounting holes 356 are disposed on the base 35 corresponding to the plurality of first mounting holes 363, and the first mounting holes 363 and the second mounting holes 356 are cooperatively configured in terms of structural size, so that the cover plate 36 and the base 35 are fixed together through the first mounting holes 363 and the second mounting holes 356.

Further, the base 35 is further provided with a sealing groove 357, and the sealing groove 357 is disposed around the groove 351, the inlet groove 352, the outlet groove 353, the liquid inlet groove 354 and the liquid outlet groove 355; that is, the groove 351, the inlet slot 352, the outlet slot 353, the liquid inlet slot 354, and the liquid outlet slot 355 are located in an inner space of a pattern defined by the sealing slot 357. The liquid supply assembly 3 further comprises a sealing ring 37, the sealing ring 37 being arranged in a sealing groove 357. During assembly, adjuster 34 covers groove 351, and adjuster 24 forms a closed cavity with cover plate 36 and sealing ring 37 that is interference fit in sealing groove 357.

Referring to fig. 4-6, fig. 4 is a schematic structural diagram of an adjusting member provided in the present application, fig. 5 is a schematic working diagram of the adjusting member provided in the present application, and fig. 6 is a schematic working diagram of the adjusting member provided in the present application.

The adjusting element 34 may be a PZT piezoelectric sheet composed of a piezoelectric ceramic sheet 341 and a substrate 342, or may be a piston, which can adjust the volume of the pump chamber 31. In this embodiment, the adjusting element 34 is a PZT piezoelectric plate composed of a piezoelectric ceramic plate 341 and a substrate 342; typically, the substrate 342 is a copper sheet. In a specific embodiment, the shapes of the piezoceramic wafer 341 and the substrate 342 are both circular, and the diameter of the piezoceramic wafer 341 is smaller than the diameter of the substrate 342.

Applying a voltage between the piezoceramic wafer 341 and the substrate 342 causes a longitudinal bending displacement of the PZT piezoelectric wafer (as shown in figure 5), and applying an alternating voltage causes a reciprocating vibration, thereby effecting a periodic adjustment of the volume of the pump chamber 31.

Referring to fig. 6, the pzt piezoelectric sheet moves from a positive maximum displacement state to a negative maximum displacement state, during which the pump chamber 31 is continuously compressed, and the medium in the pump chamber 31 is continuously pumped out. The state of the pump cavity 31 corresponding to the movement of the PZT piezoelectric sheet from the equilibrium position (y = 0) to the positive maximum displacement and the movement of the PZT piezoelectric sheet from the negative maximum displacement to the equilibrium position is the continuous expansion, and the pump cavity 31 is in the medium suction state in the process. The compression/expansion state of the pump chamber 31 is periodically performed with a sinusoidal signal, and unidirectional operation of the liquid supply assembly 3 is realized. Specifically, the controller 9 controls the battery 8 to apply alternating current to the piezoceramic sheet 341 and the substrate 342 to achieve periodic expansion/compression of the pump chamber 31.

Referring to FIGS. 7 and 8, FIG. 7 is a schematic view of an inlet passage of a liquid supply assembly provided herein, and FIG. 8 is a schematic view of an outlet passage of a liquid supply assembly provided herein.

The inlet channel 32 and the outlet channel 33 are substantially the same size. Except that the expansion port of the inlet passage 32 communicates with the pump chamber 31, and the contraction port of the outlet passage 33 communicates with the pump chamber 31; alternatively, the contraction port of the inlet passage 32 communicates with the pump chamber 31, and the expansion port of the outlet passage 33 communicates with the pump chamber 31. It will be appreciated that the cross-section of the inlet passage 32 and the outlet passage 33 may be triangular, polygonal, circular or irregular, simply by forming a converging-diverging mouth structure. Alternatively, the converging-diverging mouth structures of the inlet passage 32 and the outlet passage 33 are both conical.

In one embodiment, the converging-diverging mouth structure of the inlet passageway 32 is conical. The contraction port of the inlet channel 32 is communicated with the liquid storage cavity 1, and the expansion port of the inlet channel 32 is communicated with the pump cavity 31; the inlet channel 32 comprises a first side 321 and a second side 322 which are symmetrically arranged on the central shaft section, that is, the inlet slot 352 comprises two opposite sides on the central shaft section, and the included angle α between the first side 321 and the second side 322 is 5-10 degrees; optionally, the included angle α between the first side edge 321 and the second side edge 322 is 7.2 degrees. The length of the inlet channel 32 is L1, the size of the constriction of the inlet channel 32 is W1, and L1/W1 is 11; optionally, L1/W1 is 13.

The converging-diverging mouth of the outlet passage 33 is conically shaped. The contraction port of the outlet passage 33 is communicated with the pump chamber 31, and the expansion port of the outlet passage 33 is connected to the atomizing core 2; the outlet channel 33 comprises a first side 321 and a second side 322 which are symmetrically arranged on the cross section of the central shaft, that is, the outlet slot 353 comprises two opposite sides on the cross section of the central shaft, and the included angle α between the first side 321 and the second side 322 is 5-10 degrees; optionally, the included angle α between the first side edge 321 and the second side edge 322 is 7.2 degrees. The length of the outlet channel 33 is L2, the size of the constriction of the outlet channel 33 is W2, and L2/W2 is 11; alternatively, L2/W2 is 13.

In another embodiment, the converging-diverging mouth structure of the inlet passageway 32 is conical; the expanded port of the inlet passage 32 communicates with the liquid storage chamber 1, and the contracted port of the inlet passage 32 communicates with the pump chamber 31. The outlet passage 33 has a conical structure with the contracting and expanding openings; the expanded mouth of the outlet channel 33 communicates with the pump chamber 31 and the constricted mouth of the outlet channel 33 is connected to the atomizing core 2. The inlet channel 32 and the outlet channel 33 each comprise, in a central axial section, a first side 321 and a second side 322 arranged symmetrically; the included angle α between the first side 321 and the second side 322 is 30-40 degrees; optionally, the included angle α between the first side edge 321 and the second side edge 322 is 35 degrees.

Referring to fig. 9, fig. 9 is a diagram illustrating an analysis of an included angle between a first side and a second side of the inlet channel provided in fig. 7.

When the included angle between the first side edge 321 and the second side edge 322 is 5-10 degrees, the resistance of the liquid flowing from the contraction opening to the expansion opening is about 0.28, and the resistance of the liquid flowing from the expansion opening to the contraction opening is about 1.009; that is, the resistance to flow of liquid (e.g. aerosol-generating substrate) from the constricted opening to the expanded opening at the characteristic dimension is less than the resistance to flow of liquid from the expanded opening to the constricted opening. Therefore, when the contraction port of the inlet channel 32 is communicated with the liquid storage cavity 1, the expansion port of the inlet channel 32 is communicated with the pump cavity 31, the contraction port of the outlet channel 33 is communicated with the pump cavity 31, and the expansion port of the outlet channel 33 is connected to the atomizing 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 is 5-10 degrees, which is beneficial to the liquid feeding and pumping of the pump cavity 31.

When the included angle between the first side edge 321 and the second side edge 322 is 30-40 degrees, the resistance of the liquid flowing from the contraction opening to the expansion opening is larger than 1.46, and the resistance of the liquid flowing from the expansion opening to the contraction opening is about 1.005; that is, the resistance to fluid flow from the expanded port to the constricted port at the characteristic dimension is less than the resistance to fluid flow from the constricted port to the expanded port. Therefore, when the expanded opening of the inlet channel 32 is communicated with the liquid storage cavity 1, the contracted opening of the inlet channel 32 is communicated with the pump cavity 31, the expanded opening of the outlet channel 33 is communicated with the pump cavity 31, and the contracted opening of the outlet channel 33 is connected to the atomizing core 2 (when the liquid in the inlet channel 32 flows from the expanded opening to the contracted opening, and the liquid in the outlet channel 33 flows from the expanded opening to the contracted opening), the angle between the first side 321 and the second side 322 is 30-40 degrees, which is favorable for the liquid feeding and pumping of the pump cavity 31.

The resistance of the liquid flowing from the contraction opening to the expansion opening is 0.28 when the included angle between the first side edge 321 and the second side edge 322 is 5-10 degrees, and is less than 1.005 when the liquid flows from the expansion opening to the contraction opening when the included angle between the first side edge 321 and the second side edge 322 is 30-40 degrees. And when the included angle between the first side 321 and the second side 322 is 30-40 degrees, the liquid flows from the contraction opening to the expansion opening, the wall liquid separation phenomenon occurs, and part of the liquid flows back from the expansion opening to the contraction opening. That is, the angle between the first side 321 and the second side 322 is 5-10 degrees, which is more favorable for the liquid inlet and pumping of the pump chamber 31.

Referring to FIG. 10, FIG. 10 is a schematic view of the liquid supply assembly of the present application.

The liquid storage cavity 1 is communicated according to the contraction opening of the inlet channel 32, and the pump cavity 31 is communicated with the expansion opening; the contraction port of the outlet passage 33 communicates with the pump chamber 31, and the expansion port is an ejection port and is connected to the atomizing core 2. The periodic expansion/compression of the pump chamber 31 is achieved by applying an alternating current to the adjustment member 34 to provide a periodic positive/negative pressure to the pump chamber 31; when the pump chamber 31 is under negative pressure, the pump chamber 31 is in an expanded state, and the liquid flowing into the pump chamber 31 from the inlet passage 32 is more than the liquid flowing into the pump chamber 31 from the outlet passage 33; when the pump chamber 31 is pressurized positively, the pump chamber 31 is contracted, more liquid flows out of the pump chamber 31 from the outlet passage 33 than flows out of the pump chamber 31 from the inlet passage 32, and the liquid flowing out of the outlet passage 33 is atomized by spraying the liquid onto the atomizing core 2 through its divergent opening (ejection opening).

Specifically, the adjusting member 34 (PZT piezoelectric sheet) is displaced upward, the volume of the pump chamber 31 is increased, the pump chamber 31 is in an expanded state, and the pump chamber 31 is in a medium inflow state, in the process, the medium in the Inlet channel 32 (i.e., inlet) on the left side is from left to right, and the medium in the Outlet channel 33 (i.e., outlet) on the right side is from right to left; that is, liquid enters the pump chamber 31 from the constricted opening of the inlet passage 32 to the expanded opening of the inlet passage 32, and liquid enters the pump chamber 31 from the expanded opening of the outlet passage 33 to the constricted opening of the outlet passage 33. Further, although the liquid enters the pump chamber 31 from the inlet passage 32 and the outlet passage 33, the resistance of the liquid flowing from the constricted opening to the expanded opening is smaller than the resistance of the liquid flowing from the expanded opening to the constricted opening, the inlet passage 32 flows more liquid than the outlet passage 33, and the liquid mainly enters the pump chamber 31 from the inlet passage 32.

Conversely, when the adjusting member 34 (PZT piezoelectric plate) is displaced downward, the volume of the pump chamber 31 is decreased, the pump chamber 31 is in a contracted state, and the pump chamber 31 is in a medium pumping state, in which the medium in the left Inlet channel 32 (i.e., inlet) is from right to left, and the medium in the right Outlet channel 33 (i.e., outlet) is from left to right; that is, the liquid in the pump chamber 31 enters the liquid storage chamber 1 from the expanded opening of the inlet passage 32 toward the contracted opening of the inlet passage 32, and the liquid in the pump chamber 31 enters the atomizing core 2 from the contracted opening of the outlet passage 33 toward the expanded opening of the outlet passage 33. Further, while both the inlet passage 32 and the outlet passage 33 have liquid pumped out of the pump chamber 31, the resistance to flow of liquid from the constricted opening to the expanded opening is less than the resistance to flow of liquid from the expanded opening to the constricted opening, and the outlet passage 33 flows more liquid than the inlet passage 32, and liquid enters the atomizing core 2 primarily from the outlet passage 33.

Therefore, during the periodic up-and-down movement of the adjusting member 34 (PZT piezo), the compression/expansion state of the pump chamber 31 is performed periodically with a sinusoidal signal, and in each period, the outlet channel 33 is in clear liquid flow and the inlet channel 32 is in clear liquid flow, so that the directional liquid transportation is realized. Due to the maximum positive and negative displacements of the adjustment member 34, the liquid in the pump chamber 31 is metered, thereby enabling a metered supply of the atomizing core 2.

Referring to FIG. 11, FIG. 11 is a simulation result of the liquid supply assembly provided herein.

It has been found experimentally that less liquid enters and less liquid enters the left Inlet channel 32 (i.e. Inlet) and less liquid enters the right Outlet channel 33 (i.e. Outlet), thereby pumping aerosol-generating substrate in the reservoir chamber 1 towards the atomizing cartridge 2. The peak in the second cycle in fig. 11 is that the adjuster 34 is at the positive maximum displacement, i.e. the pump chamber 31 is in an expanded state, the amount of liquid entering the pump chamber 31 through the inlet passage 32 is 3.439kg/s and the amount of liquid entering the pump chamber 31 through the outlet passage 33 is 2.947kg/s; the peak-valley between the second period and the third period is that the regulating member 34 is at the negative maximum displacement, i.e. the pump chamber 31 is in the contracted state, the amount of liquid entering the outlet channel 33 from the pump chamber 31 is 3.443kg/s, and the amount of liquid entering the inlet channel 32 from the pump chamber 31 is 2.94kg/s.

Referring to fig. 12, fig. 12 is a graph of viscosity versus temperature for various media provided herein.

It is found through experiments that different media have different viscosities at different temperatures, but the viscosities of the media decrease with increasing temperature. Figure 12 is a graph of viscosity versus temperature for a portion of an aerosol-generating substrate nebulizable by an electronic nebulizing device, all at ambient temperature at a viscosity of 150cp or greater. Since the liquid supply assembly 3 is a micro-pump and the inlet passage 32 and the outlet passage 33 are both of a constricted and expanded pore structure, the viscosity of the aerosol-generating substrate is too high for transport. Therefore, transport is facilitated by heating the aerosol-generating substrate entering the liquid supply assembly 3 to reduce its viscosity; the heating temperature of the aerosol-generating substrate within the pump chamber 31 is set to 30-80 c, with the particular heating temperature being set according to the characteristics of the aerosol-generating substrate. Optionally, the auxiliary heating assembly 4 heats the aerosol generating substrate entering the pump chamber 31 of the liquid supply assembly 3 to a temperature at which its viscosity is reduced to below 50 cp; that is, the aerosol generating substrate entering the pump chamber 31 of the liquid supply assembly 3 is preferably heated to a temperature of 50-80 ℃. Optionally, the auxiliary heating assembly 4 heats the aerosol-generating substrate entering the pump chamber 31 to a point where its viscosity is reduced to below 30 cp; that is, the aerosol-generating substrate within the pump chamber 31 is preferably heated to a temperature of 60-80 ℃.

Referring to fig. 13, fig. 13 is a flowchart illustrating a working process of the electronic atomization device according to the present application.

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

1) Preheating: before the first suction, the liquid level in the liquid storage chamber 1 is higher than the liquid level in the pump chamber 31 of the liquid supply assembly 3 in the vertical direction, and the pump chamber 31 will be filled with the aerosol-generating substrate in the state where the electronic atomizing device is placed vertically. When the user wants to use the electronic atomization device, the first detection element 12 is triggered to activate the electronic atomization device, and the controller 9 controls the auxiliary heating assembly 4 to operate in response to the activation signal of the first detection element 12. That is, when the electronic atomizer is activated, the controller 9 controls the battery 8 to supply power to the auxiliary heating assembly 4, so that the auxiliary heating assembly 4 heats the aerosol-generating substrate in the pump chamber 31 of the liquid supply assembly 3, and the viscosity of the aerosol-generating substrate in the pump chamber 31 is reduced to within the operating range of the liquid supply assembly 3.

2) Pre-pumping liquid: in response to the auxiliary heating assembly 4 heating the aerosol-generating substrate within the pump chamber 31 to a preset temperature, the controller 9 controls the regulating member 34 to operate to deliver a metered dose of aerosol-generating substrate to the atomizing wick 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 predetermined temperature, and the controller 9 controls the battery 8 to supply power to the regulating member 34, so that the liquid supply assembly 3 delivers a predetermined amount of aerosol-generating substrate to the porous liquid-guiding member 22 of the atomizing cartridge 2, at which time the preparation is completed, followed by a normal suction process. Wherein the predetermined temperature is 30-80 deg.C, and is selected based on the characteristics of the aerosol-generating substrate.

3) Suction and atomization: after the controller 9 controls the operation of the regulating member 34 to deliver a metered dose of aerosol-generating substrate to the atomizing cartridge 2, the controller 9 controls the operation of the atomizing cartridge 2 in response to a signal from the second detection element (e.g. a suction underpressure detected by the air flow sensor). That is, the second detecting element feeds back the detection signal to the controller 9, and the controller 9 controls the battery 8 to supply power to the heating element 21 of the atomizing core 2 according to the signal, so that the atomizing core 2 operates to atomize the aerosol-generating substrate to generate aerosol, and the atomized aerosol is mixed with the air entering from the air inlet channel 7 and is inhaled by the user. After the suction action is finished, the controller 9 controls the battery 8 to stop supplying power to the atomizing core 2, so that the heating element 21 of the atomizing core 2 stops acting.

4) Sucking interval fluid infusion: the controller 9 is also arranged to determine a suction interval and to control the auxiliary heating assembly 4 to again heat aerosol-generating substrate entering the pump chamber 31 of the liquid supply assembly 3 to a predetermined temperature during the suction interval and to control the regulating member 34 to operate to again deliver a metered dose of aerosol-generating substrate to the atomizing wick 2. That is, after a puff is completed, 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, and then the controller 9 controls the battery 8 to supply power to the regulating member 34 to deliver a metered dose of aerosol generating substrate to the atomizing cartridge 2 in preparation for the next puff.

Wherein the aspiration interval is the time interval between the completion of one aspiration and the start of the next aspiration. In one embodiment, the suction gap infusion is performed by: fluid replacement is performed between the completion of each aspiration and the start of the next aspiration: that is, a refill of liquid is added to each puff 1 time, thereby ensuring that the aerosol concentration is the same for each puff. In another embodiment, the suction interval fluid infusion is performed by: liquid supplementing is carried out between the completion of the preset suction times and the beginning of the next preset suction times, and the preset suction times are more than 1 time; for example, the liquid is replenished every 3 times, so that the liquid replenishing times are reduced, and the service life of the liquid supply assembly 3 is prolonged.

In the mode of pumping and replenishing the liquid for each time, the liquid supply amount of the liquid supply assembly 3 for each liquid replenishment is enough for the user to pump for a plurality of times. As different users draw different amounts of aerosol-generating substrate at one time, in the initial setting, the liquid supply assembly 3 replenishes liquid according to a preset suction interval liquid replenishing frequency, and the liquid replenishing frequency or the liquid replenishing interval is set according to the suction habits of most users; after the liquid supplying assembly is used for a period of time, the controller 9 adjusts the frequency of liquid supplying of the liquid supplying assembly 3 at the suction interval according to the use habit of a user, so that the phenomenon of liquid leakage caused by too much liquid supplying or dry burning caused by too little liquid supplying is prevented. For example, if the average length of time per puff by the user is greater than the average length of time per puff by a majority of users, then it is indicated that the average consumption per puff by the user is greater than the average consumption per puff by a majority of users; generally, if the average length of each puff by a user is greater than the average length of each puff by most users, the fluid replacement frequency needs to be increased, and conversely, the fluid replacement frequency needs to be decreased.

Further, in order to avoid simultaneous working of the liquid supply assembly 3 and the atomizing core 2 of the electronic atomizing device, in the process of liquid supply assembly 3 liquid supplementing, if the suction action of a user is detected, liquid supplementing is stopped, and prompt information is further sent, so that the user is prevented from rapidly sucking, and the liquid supply assembly 3 and the atomizing core 2 can work simultaneously due to the fact that one-time liquid supplementing is not completed at a suction interval.

After the electronic atomization device finishes the working process of 1) preheating and 2) pre-pumping liquid after being unsealed for the first time, the normal suction state is the circulation of 3) suction atomization and 4) suction interval oil supplement. The liquid supply component 3 is arranged in the electronic atomization device, so that quantitative liquid supply to the atomization core 2 is realized, the problem of uneven transportation of aerosol generation substrate components caused by liquid guiding only by the porous liquid guiding piece 22 of the atomization core 2 is avoided, and the taste of the aerosol is continuous; and the liquid supply component 3 does not need to be provided with a valve plate, so that the service life and the safety of the liquid supply component 3 are ensured, and the valve plate is prevented from being corroded or foreign particles are prevented from being mixed into the aerosol generating substrate conveyed to the atomizing core 2. The liquid supply component 3 utilizes the suction interval to replenish the liquid for the atomizing core 2, the volume of the liquid supply component 3 can be reduced, the volume of the electronic atomizing device is reduced, and the cost is saved.

The electronic atomization device comprises a liquid storage cavity, an atomization core and a liquid supply assembly; the reservoir chamber is for storing an aerosol-generating substrate; an atomising core for atomising an aerosol-generating substrate; the liquid supply assembly has a pump chamber, an inlet passage and an outlet passage; the inlet channel and the outlet channel are both in a shrinkage and expansion hole structure; one end of the inlet channel is communicated with the liquid storage cavity, and the other end of the inlet channel is communicated with the pump cavity; one end of the outlet channel is communicated with the pump cavity, and the other end of the outlet channel is connected to the atomizing core; the liquid supply assembly comprises an adjustment member for periodically adjusting the volume of the pump chamber such that more liquid flows from the inlet passage to the pump chamber than from the pump chamber to the inlet passage and more liquid flows from the pump chamber to the outlet passage than from the outlet passage to the pump chamber, thereby pumping aerosol-generating substrate in the reservoir chamber towards the atomizing cartridge. Through the arrangement, the atomizing core is actively and quantitatively supplied with liquid, so that the atomizing core consumes all components in the aerosol generating substrate more uniformly in the atomizing process; and realize initiatively supplying liquid through above-mentioned liquid supply assembly, improved the persistence and the security that supply liquid, do benefit to the performance that improves electron atomizing device.

The above description is only a part of the embodiments of the present application, and not intended to limit the scope of the present application, and all equivalent devices or equivalent processes that can be directly or indirectly applied to other related technologies, which are made by using the contents of the present specification and the accompanying drawings, are also included in the scope of the present application.

Claims (15)

1. An electronic atomization device, comprising:

a reservoir for storing an aerosol-generating substrate;

an atomising wick for atomising the aerosol-generating substrate;

a liquid supply assembly having a pump chamber, an inlet passage and an outlet passage; the inlet channel and the outlet channel are both in a contraction and expansion hole structure; one end of the inlet channel is communicated with the liquid storage cavity, and the other end of the inlet channel is communicated with the pump cavity; one end of the outlet channel is communicated with the pump cavity, and the other end of the outlet channel is connected to the atomizing core; the liquid supply assembly includes an adjustment member for periodically adjusting the volume of the pump chamber such that more liquid flows from the inlet passage to the pump chamber than from the pump chamber to the inlet passage and more liquid flows from the pump chamber to the outlet passage than from the outlet passage to the pump chamber, thereby pumping aerosol-generating substrate in the reservoir to the atomizing cartridge.

2. The electronic atomization device of claim 1 further comprising an auxiliary heating assembly that heats aerosol-generating substrate entering the pump chamber.

3. An electronic atomisation device according to claim 2, in which the auxiliary heating assembly heats the aerosol-generating substrate entering the pump chamber to a point where its viscosity is reduced to below 50 cp.

4. An electronic atomisation device according to claim 2, in which the auxiliary heating assembly heats the aerosol-generating substrate entering the pump chamber to a point where its viscosity is reduced to below 30 cp.

5. The electronic atomization device of claim 1 wherein the constricted and expanded pore structure is conical; the contraction port of the inlet channel is communicated with the liquid storage cavity, and the expansion port of the inlet channel is communicated with the pump cavity; the contraction opening of the outlet channel is communicated with the pump cavity, and the expansion opening of the outlet channel is connected to the atomizing core; the inlet channel and the outlet channel respectively comprise a first side edge and a second side edge which are symmetrically arranged on the cross section of the central shaft; the included angle between the first side edge and the second side edge is 5-10 degrees.

6. The electronic atomization device of claim 5 wherein the inlet channel has a length L1, the constriction of the inlet channel has a dimension W1, L1/W1 is 11; the length of the outlet channel is L2, the size of a contraction port of the outlet channel is W2, and L2/W2 is 11.

7. The electronic atomization device of claim 1 wherein the constricted and expanded pore structure is conical; the contraction port of the inlet channel is communicated with the pump cavity, and the expansion port of the inlet channel is communicated with the liquid storage cavity; the expansion opening of the outlet channel is communicated with the pump cavity, and the contraction opening of the outlet channel is connected to the atomizing core; the inlet channel and the outlet channel respectively comprise a first side edge and a second side edge which are symmetrically arranged on the cross section of the central shaft; the included angle between the first side edge and the second side edge is 30-40 degrees.

8. The electronic atomization device of claim 1 further comprising a controller and a battery; the regulating part comprises a piezoelectric ceramic piece and a substrate, and the controller controls the battery to apply alternating current to the piezoelectric ceramic piece and the substrate so as to realize periodic expansion/compression of the pump cavity.

9. The electronic atomizer device of claim 1, wherein said liquid supply assembly further comprises a base and a cover; the base is provided with a groove, an inlet groove and an outlet groove, and the inlet groove and the outlet groove are respectively communicated with the groove; the regulating member covers the recess, and the cover plate covers the inlet groove and the outlet groove to form the pump chamber, the inlet passage, and the outlet passage, respectively.

10. The electronic atomizer device according to claim 9, wherein said base further comprises a liquid inlet channel and a liquid outlet channel, said liquid inlet channel being disposed at an end of said inlet channel remote from said interior space of said cavity and communicating with said inlet channel, said liquid outlet channel being disposed at an end of said outlet channel remote from said interior space of said cavity and communicating with said outlet channel; the cover plate is provided with a liquid inlet hole corresponding to the liquid inlet groove and a liquid outlet hole corresponding to the liquid outlet groove.

11. The electronic atomization device of claim 1 further comprising a controller and a first detection element; the controller controls the auxiliary heating assembly to operate in response to an activation signal of the first detection element.

12. The electronic atomizing device of claim 11, wherein the controller controls the regulating member to operate to deliver a metered amount of aerosol-generating substrate to the atomizing wick in response to the supplemental heating assembly heating the aerosol-generating substrate in the liquid supply assembly to a preset temperature.

13. The electronic atomization device of claim 12 wherein the predetermined temperature is 30-80 ℃.

14. The electronic vaping device of claim 12, further comprising a second detection element; the controller controls the operation of the atomizing cartridge in response to a detection signal of the second detection element after controlling the operation of the regulating member to deliver a metered amount of aerosol-generating substrate to the atomizing cartridge.

15. The electronic atomizer of claim 14, wherein said controller is further configured to determine a puff interval, and to control said auxiliary heating assembly to heat the aerosol generating substrate in said liquid supply assembly to the preset temperature again during said puff interval, and to control said regulating member to operate to deliver a measured amount of aerosol generating substrate to said atomizing wick again.

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