CN115336811B

CN115336811B - Electronic atomization device

Info

Publication number: CN115336811B
Application number: CN202110518077.8A
Authority: CN
Inventors: 刘成川; 赵月阳; 杨豪; 夏畅; 雷桂林
Original assignee: Shenzhen Smoore Technology Ltd
Current assignee: Shenzhen Smoore Technology Ltd
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2025-08-29
Anticipated expiration: 2041-05-12
Also published as: CN115336811A

Abstract

The application discloses an electronic atomization device which comprises a liquid storage cavity, an atomization core and a liquid supply assembly, wherein the liquid storage cavity is used for storing aerosol generating matrixes, the atomization core is used for atomizing the aerosol generating matrixes, the liquid supply assembly is provided with a pump cavity, an inlet channel and an outlet channel, the inlet channel and the outlet channel are of a shrinkage expansion hole structure, one end of the inlet channel is communicated with the liquid storage cavity, 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, the other end of the outlet channel is connected to the atomization core, the liquid supply assembly comprises an adjusting piece which is used for periodically adjusting the volume of the pump cavity, so that the liquid flowing from the inlet channel to the pump cavity is larger than the liquid flowing from the pump cavity to the inlet channel, and the liquid flowing from the pump cavity to the outlet channel is larger than the liquid flowing from the outlet channel to the pump cavity, and therefore the aerosol generating matrixes in the liquid storage cavity are pumped to the atomization core. Through the arrangement, initiative and quantitative liquid supply to the atomizing core are realized.

Description

Electronic atomizing device

Technical Field

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

Background

Currently, most of liquid supply technologies of electronic atomization devices are passive liquid supply by matching suction negative pressure with porous ceramic or cotton core liquid suction. However, the capillary action of the porous ceramic or cotton core ensures that each component of the aerosol generating matrix is not uniformly transported and is influenced by the negative pressure in the liquid storage cavity, the transportation quantity of the aerosol generating matrix cannot be accurately controlled, the taste is influenced, and the use experience of a user is reduced.

Based on this, a liquid supply technology through the micropump liquid supply is proposed, but the existing micropump is a valved micropump, and a valve plate in the valved micropump has life risk and corrosion resistance risk, so that the life and safety of the micropump cannot be guaranteed.

Disclosure of Invention

In view of the above, the present application provides an electronic atomization device to solve the technical problems of how to realize quantitative liquid supply and guarantee the life and safety of micropump in the prior art.

In order to solve the technical problem, the first technical scheme of the application is that the electronic atomization device comprises a liquid storage cavity, an atomization core and a liquid supply assembly, wherein the liquid storage cavity is used for storing aerosol generating matrixes, the atomization core is used for atomizing the aerosol generating matrixes, the liquid supply assembly is provided with a pump cavity, an inlet channel and an outlet channel, the inlet channel and the outlet channel are of a shrinkage expansion hole structure, one end of the inlet channel is communicated with the liquid storage cavity, 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, the other end of the outlet channel is connected with the atomization core, and the liquid supply assembly comprises an adjusting piece used for periodically adjusting the volume of the pump cavity so that the liquid flowing from the inlet channel to the pump cavity is larger than the liquid flowing from the pump cavity to the inlet channel, and the liquid flowing from the pump cavity to the outlet channel is larger than the liquid flowing from the outlet channel to the pump cavity, so that the aerosol generating matrixes in the liquid storage cavity are pumped to the atomization core.

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

Wherein the auxiliary heating assembly heats the aerosol-generating substrate entering the pump chamber to a viscosity of less than 50 cp.

Wherein the auxiliary heating assembly heats the aerosol-generating substrate entering the pump chamber to a viscosity of less than 30 cp.

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

The length of the inlet channel is L1, the size of the shrinkage opening of the inlet channel is W1, the L1/W1 is 11:1-15:1, the length of the outlet channel is L2, the size of the shrinkage opening of the outlet channel is W2, and the L2/W2 is 11:1-15:1.

Wherein the shrinkage-expansion hole structure is conical; the contracting port of the inlet channel is communicated with the pump cavity, and the expanding port of the inlet channel is communicated with the liquid storage cavity; the expansion port of the outlet channel is communicated with the pump cavity, the contraction 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 section of a central shaft, and the included angle between the first side edge and the second side edge is 30-40 degrees.

The controller controls the battery to apply alternating current to the piezoelectric ceramic plate and the substrate so as to enable the pump cavity to realize periodic expansion/compression.

The liquid supply assembly further comprises a base and a cover plate, wherein the base is provided with a groove, an inlet groove and an outlet groove, the inlet groove and the outlet groove are respectively communicated with the groove, the adjusting piece covers the groove, the cover plate covers the inlet groove and the outlet groove, and the pump cavity, the inlet channel and the outlet channel are respectively formed.

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 of the inlet groove, which is far away from the inner space of the groove, and is communicated with the inlet groove, the liquid outlet groove is arranged at the end part of the outlet groove, which is far away from the inner space of the 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.

The auxiliary heating assembly is characterized by further comprising a controller and a first detection element, wherein the controller is used for controlling the auxiliary heating assembly to work in response to a starting signal of the first detection element.

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

Wherein the preset temperature is 30-80 ℃.

The aerosol-generating device further comprises a second detection element, and the controller controls the operation of the regulating element to control the operation of the atomization core in response to a detection signal of the second detection element after the regulating element is controlled to operate to deliver a fixed amount of aerosol-generating substrate to the atomization core.

Wherein the controller is further configured to determine a pumping interval, and control the auxiliary heating assembly to heat the aerosol-generating substrate in the liquid supply assembly to a preset temperature again during the pumping interval, and control the regulator to operate to deliver a metered amount of aerosol-generating substrate to the atomizing core again.

The electronic atomization device has the advantages that the electronic atomization device is different from the prior art, the electronic atomization device comprises a liquid storage cavity, an atomization core and a liquid supply assembly, the liquid storage cavity is used for storing aerosol-generating matrixes, the atomization core is used for atomizing the aerosol-generating matrixes, the liquid supply assembly is provided with a pump cavity, an inlet channel and an outlet channel, the inlet channel and the outlet channel are of a shrinkage expansion hole structure, one end of the inlet channel is communicated with the liquid storage cavity, 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, the other end of the outlet channel is connected to the atomization core, and the liquid supply assembly comprises an adjusting piece used for periodically adjusting the volume of the pump cavity so that the liquid flowing from the inlet channel to the pump cavity is larger than the liquid flowing from the pump cavity to the inlet channel, and the liquid flowing from the pump cavity to the outlet channel is larger than the liquid flowing from the outlet channel to the pump cavity, and therefore aerosol-generating matrixes in the liquid storage cavity are pumped to the atomization core. Through the arrangement, the active and quantitative liquid supply to the atomizing core is realized, so that the atomizing core consumes various components in the aerosol generating matrix more uniformly in the atomizing process, and the active liquid supply is realized through the liquid supply assembly, so that the durability and the safety of the liquid supply are improved, and the performance of the electronic atomizing device is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an electronic atomizing device provided by the application;

FIG. 2 is a simplified schematic diagram of a liquid supply assembly according to the present application;

FIG. 3 is a schematic illustration of a specific construction of a liquid supply assembly provided by the present application;

FIG. 4 is a schematic view of the structure of the adjusting member provided by the present application;

FIG. 5 is a schematic diagram of the operation of the adjustment member provided by the present application;

FIG. 6 is a schematic view of the operation of the adjustment member provided by the present application;

FIG. 7 is a schematic view of the structure of the inlet channel in the liquid supply assembly provided by the application;

FIG. 8 is a schematic view of the structure of the outlet channel in the liquid supply assembly provided by the present application;

FIG. 9 is an analysis of the angle between the first side and the second side of the inlet channel of FIG. 7;

FIG. 10 is a schematic diagram of the operation of the liquid supply assembly provided by the present application;

FIG. 11 is a simulation result of a liquid supply assembly provided by the present application;

FIG. 12 is a graph of viscosity versus temperature for different media provided by the present application;

Fig. 13 is a flowchart of the operation process of the electronic atomizing device provided by the application.

Detailed Description

The application is described in further detail below with reference to the drawings and examples. It is specifically noted that the following examples are only for illustrating the present application, but do not limit the scope of the present application. Likewise, the following examples are only some, but not all, of the examples of the present application, and all other examples, which a person of ordinary skill in the art would obtain without making any inventive effort, are within the scope of the present application.

The terms "first," "second," "third," and the like in this disclosure are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. All directional indications (such as up, down, left, right, front, rear) in embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular pose (as shown in the drawings), and if the particular pose changes, the directional indication changes accordingly. The terms "comprising" and "having" and any variations thereof in embodiments of the present application are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may alternatively include other steps or elements not listed or 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 may be included in at least one embodiment of the application. The appearances of such phrases 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. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

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

The electronic atomization device comprises a liquid storage cavity 1, an atomization 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 shell 10. The liquid storage cavity 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 arranged in the accommodating cavity 100 formed by the shell 10. The liquid storage cavity 1 is used for storing aerosol generating matrixes, the atomization core 2 is used for atomizing the aerosol generating matrixes, the liquid supply assembly 3 is used for conveying the aerosol generating matrixes in the liquid storage cavity 1 to the atomization core 2, the auxiliary heating assembly 4 is used for heating the aerosol generating matrixes entering the liquid supply assembly 3, the liquid inlet channel 5 is communicated with the liquid storage cavity 1 and the liquid supply assembly 3, and the liquid outlet channel 6 is communicated with the liquid supply assembly 3 and the atomization core 2. The atomizing core 2 can atomize aerosol generating matrixes through resistance heating, microwave heating and atomizing, electromagnetic heating and atomizing, infrared heating and atomizing and ultrasonic vibration, preferably, the atomizing core 2 comprises a heating element 21 and a porous liquid guide element 22, the heating element 21 is arranged on the surface of the porous liquid guide element 22, and optionally, the porous liquid guide element 22 is porous ceramic, fiber cotton or glass fiber, and the heating element 21 is in resistance heating.

Further, the electronic atomizing device further comprises a temperature sensor (not shown) arranged in the liquid inlet pipe 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 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 that the liquid storage cavity 1 can smoothly discharge liquid, the electronic atomization device further comprises a ventilation channel 11, wherein 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 the air pressure in the liquid storage cavity 1 and the external 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 starting the electronic atomizing device, the electronic atomizing device further comprises a first detection element 12, wherein 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 operation of the liquid supply assembly 3 and the atomizing core 2. 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 side wall of the housing 10. It will be appreciated that the first detecting element 12 may be configured to activate the electronic atomizing device by means of sound control or light control, and the specific activation mode may be designed according to the need, which is not limited by the present application.

The electronic atomization device further comprises a second detection element (not shown), wherein the second detection element is an air flow sensor, the air flow sensor is electrically connected with the controller 9, the air flow sensor detects suction negative pressure, the controller 9 controls the atomization core 2 to work, and the air flow 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 structural diagram of a liquid supply assembly according to the present application, and fig. 3 is a schematic structural diagram of a liquid supply assembly according to the present application.

The liquid supply assembly 3 has a pump chamber 31, an inlet channel 32 and an outlet channel 33, and the inlet channel 32 and the outlet channel 33 are of a contracted and expanded hole structure. One end of the inlet channel 32 is communicated with the liquid storage cavity 1, the other end is communicated with the pump cavity 31, and one end of the outlet channel 33 is communicated with the pump cavity 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 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 reservoir chamber 1 towards the atomizing core 2.

In one embodiment, the liquid supply assembly 3 specifically includes a base 35 and a cover 36, and the regulator 34, the base 35, and the cover 36 cooperate to form the pump chamber 31, the inlet channel 32, and the outlet channel 33. Specifically, the base 35 is provided with a groove 351, an inlet groove 352 and an outlet groove 353, and the regulating member 34 covers the groove 351, and the cover plate 36 covers the inlet groove 352 and the outlet groove 353, forming the pump chamber 31, the inlet passage 32 and the outlet passage 33, respectively. Specifically, the shape of the groove 351 is not limited, and may be circular and have an annular sidewall, the inlet and outlet grooves 352 and 353 are respectively communicated with the groove 351, for example, the inlet and outlet grooves 352 and 353 are respectively disposed at opposite sides of the groove 351, the communication between the inlet and outlet grooves 352 and 353 and the groove 351 is a notch of the sidewall of the groove 351, the shape of the adjusting member 34 is matched with that of the groove 351, the adjusting member 34 covers the entire groove 351 to form the pump chamber 31, a through hole 364 is formed in the middle of the cover plate 36, the cover plate 36 covers the inlet and outlet grooves 352 and 353 to form the inlet and outlet passages 32 and 33, and the adjusting member 34 is exposed to provide a space for displacement of the adjusting member 34, thereby realizing adjustment of the volume of the pump chamber 31.

The base 35 is further provided with a liquid inlet tank 354 and a liquid outlet tank 355, wherein the liquid inlet tank 354 is arranged at the end of the inlet tank 352 far away from the inner space of the groove 351 and is communicated with the inlet tank 352, and the liquid outlet tank 355 is arranged at the end of the outlet tank 353 far away from the inner space of the groove 351 and is communicated with the outlet tank 353. In one embodiment, the cross-sectional area of the liquid inlet tank 354 is greater than the cross-sectional area of the expansion opening of the inlet tank 352, and the cross-sectional area of the liquid outlet tank 355 is greater than the cross-sectional area of the expansion opening of the outlet tank 353. Alternatively, the liquid inlet tank 354 and the liquid outlet tank 355 are the same in size.

A liquid inlet 361 is formed in the cover plate 36 corresponding to the liquid inlet tank 354, and a liquid outlet 362 is formed in the cover plate corresponding to the liquid outlet tank 355. The liquid inlet 361 communicates with the liquid inlet channel 5, and the liquid outlet 362 communicates with the liquid outlet channel 6. The liquid inlet 361 is matched with the liquid inlet tank 354 in size, and the liquid outlet 362 is matched with the liquid outlet tank 355 in size. In one embodiment, the liquid inlet 361 and the liquid outlet 362 are disposed on opposite sides of the through hole 364.

A plurality of first mounting holes 363 are also 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 first mounting holes 363 and the second mounting holes 356 being sized to fit, the cover plate 36 and the base 35 being secured together by 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 groove 352, the outlet groove 353, the liquid inlet groove 354 and the liquid outlet groove 355 are located in an inner space of a pattern formed by surrounding the sealing groove 357. The liquid supply assembly 3 further comprises a sealing ring 37, the sealing ring 37 being arranged in the sealing groove 357. The assembly process is that the adjusting piece 34 covers the groove 351, and the adjusting piece 24 forms a closed cavity with the cover plate 36 and the sealing ring 37 in interference fit with the sealing groove 357.

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

The adjusting member 34 may be a PZT piezoelectric sheet composed of a piezoelectric ceramic sheet 341 and a substrate 342, or may be a piston, so as to adjust the volume of the pump chamber 31. In this embodiment, the adjusting member 34 is a PZT piezoelectric sheet composed of a piezoelectric ceramic sheet 341 and a substrate 342, and typically, the substrate 342 is a copper sheet. In a specific embodiment, the piezoelectric ceramic sheet 341 and the substrate 342 are both circular in shape, and the diameter of the piezoelectric ceramic sheet 341 is smaller than the diameter of the substrate 342.

Applying a voltage between the piezoelectric ceramic 341 and the substrate 342 causes the PZT piezoelectric sheet to undergo a longitudinal bending displacement (as shown in fig. 5), and applying an ac voltage causes reciprocating vibration, thereby realizing 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 pumping chamber 31 continues to compress and the medium in the pumping chamber 31 continues to be pumped out. The state of the pump chamber 31 corresponding to the PZT piezoelectric sheet moving from the equilibrium position (y=0) to the positive maximum displacement and the PZT piezoelectric sheet moving from the negative maximum displacement to the equilibrium position is continuously expanded, and in this process, the pump chamber 31 is in a medium suction state. The compression/expansion state of the pump chamber 31 is periodically carried out along with the sine signal, so that the unidirectional operation of the liquid supply assembly 3 is realized. Specifically, the controller 9 controls the battery 8 to apply alternating current to the piezoelectric ceramic sheet 341 and the substrate 342 to cause the pump chamber 31 to realize periodic expansion/compression.

Referring to fig. 7 and 8, fig. 7 is a schematic structural view of an inlet channel in a liquid supply assembly according to the present application, and fig. 8 is a schematic structural view of an outlet channel in a liquid supply assembly according to the present application.

The inlet channel 32 and the outlet channel 33 are substantially identical in structural dimensions. The difference is that the expansion port of the inlet passage 32 is communicated to the pump chamber 31 and the contraction port of the outlet passage 33 is communicated to the pump chamber 31, or that the contraction port of the inlet passage 32 is communicated to the pump chamber 31 and the expansion port of the outlet passage 33 is communicated to the pump chamber 31. It will be appreciated that the inlet channel 32 and the outlet channel 33 may be triangular, polygonal, circular or irregular in cross-section, with only a constricting and expanding orifice structure being formed. Alternatively, the constriction and expansion port structures of the inlet channel 32 and the outlet channel 33 are conical.

In one embodiment, the constricting and expanding orifice structure of the inlet channel 32 is conical. The inlet channel 32 has a convergent mouth communicating with the liquid storage cavity 1, and an expansion mouth communicating with the pump cavity 31, the inlet channel 32 has a first side 321 and a second side 322 symmetrically arranged on a central axis section, that is, the inlet groove 352 has two opposite sides on the central axis section, the included angle alpha between the first side 321 and the second side 322 is 5-10 degrees, and optionally, the included angle alpha between the first side 321 and the second side 322 is 7.2 degrees. The inlet passage 32 has a length L1, the inlet passage 32 has a constriction of dimension W1, L1/W1 is 11:1-15:1, and optionally L1/W1 is 13:1.

The convergent-divergent mouth structure of the outlet passage 33 is conical. The convergent mouth of the outlet channel 33 communicates with the pump chamber 31, the divergent mouth of the outlet channel 33 is connected to the atomizing core 2, the outlet channel 33 comprises a first side 321 and a second side 322 symmetrically arranged in the central axis section, i.e. two opposite sides of the outlet slot 353 in the central axis section, the included angle α of the first side 321 and the second side 322 is 5-10 degrees, and optionally the included angle α of the first side 321 and the second side 322 is 7.2 degrees. The outlet channel 33 has a length L2, the constriction of the outlet channel 33 has a dimension W2, L2/W2 is 11:1-15:1, and optionally L2/W2 is 13:1.

In another embodiment, the inlet channel 32 has a conical contraction/expansion port structure, the expansion port of the inlet channel 32 is communicated with the liquid storage cavity 1, and the contraction port of the inlet channel 32 is communicated with the pump cavity 31. The outlet channel 33 has a conical contraction and expansion port structure, the expansion port of the outlet channel 33 is communicated with the pump cavity 31, and the contraction port of the outlet channel 33 is connected to the atomizing core 2. The inlet channel 32 and the outlet channel 33 each comprise a first side 321 and a second side 322 which are symmetrically arranged on the central axis section, wherein an included angle alpha between the first side 321 and the second side 322 is 30-40 degrees, and optionally, an included angle alpha between the first side 321 and the second side 322 is 35 degrees.

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

The resistance to flow of liquid from the stoma to the stoma is about 0.28 and the resistance to flow of liquid from the stoma to the stoma is about 1.009 when the angle between the first side 321 and the second side 322 is between 5-10 degrees, i.e. the resistance to flow of liquid (e.g. aerosol-generating substrate) from the stoma to the stoma is less than the resistance to flow of liquid from the stoma to the stoma at this characteristic dimension. Therefore, when the constriction of the inlet channel 32 is communicated with the liquid storage cavity 1, the expansion of the inlet channel 32 is communicated with the pump cavity 31, the constriction of the outlet channel 33 is communicated with the pump cavity 31, and the expansion of the outlet channel 33 is connected to the atomizing core 2 (when the liquid flow direction in the inlet channel 32 is from the constriction to the expansion, and the liquid flow direction in the outlet channel 33 is from the constriction to the expansion Zhang Koushi), the included angle between the first side 321 and the second side 322 is 5-10 degrees, which is beneficial to liquid inlet and liquid 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 greater 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 of the liquid flowing from the expansion opening to the contraction opening is smaller than the resistance of the liquid flowing from the contraction opening to the expansion opening under the characteristic dimension. Therefore, when the expansion port of the inlet channel 32 is communicated with the liquid storage cavity 1, the contraction port of the inlet channel 32 is communicated with the pump cavity 31, the expansion port of the outlet channel 33 is communicated with the pump cavity 31, and the contraction port of the outlet channel 33 is connected to the atomizing core 2 (when the liquid flow direction in the inlet channel 32 is from the expansion port to the contraction port, and the liquid flow direction in the outlet channel 33 is from the expansion port to the contraction port), the first side 321 and the second side 322 have an included angle of 30-40 degrees, which is beneficial to liquid inlet and liquid 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, which is smaller than the resistance of the liquid flowing 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, which is 1.005. When the included angle between the first side edge 321 and the second side edge 322 is 30-40 degrees, the liquid flows from the contraction opening to the expansion opening, the wall-liquid separation phenomenon can occur, and part of the liquid can flow back from the expansion opening to the contraction opening. That is, the included angle between the first side 321 and the second side 322 is 5-10 degrees, which is more favorable for liquid inlet and liquid pumping of the pump chamber 31.

Referring to fig. 10, fig. 10 is a schematic diagram illustrating the operation of the liquid supply assembly according to the present application.

The inlet channel 32 has a constriction opening communicating with the liquid storage chamber 1 and an expansion opening communicating with the pump chamber 31, and the outlet channel 33 has a constriction opening communicating with the pump chamber 31, the expansion opening being a jet opening and being connected to the atomizing core 2. The pump chamber 31 is periodically expanded/compressed by applying alternating current to the regulating member 34 to provide positive/negative pressure to the pump chamber 31, the pump chamber 31 is in an expanded state when the pump chamber 31 is in negative pressure, the liquid flowing into the pump chamber 31 from the inlet channel 32 is more than the liquid flowing into the pump chamber 31 from the outlet channel 33, the pump chamber 31 is in a contracted state when the pump chamber 31 is in positive pressure, the liquid flowing out of the pump chamber 31 from the outlet channel 33 is more than the liquid flowing out of the pump chamber 31 from the inlet channel 32, and the liquid flowing out of the outlet channel 33 is sprayed to the atomizing core 2 through an expansion opening (an injection opening) thereof for atomizing.

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

Conversely, the displacement of the regulating member 34 (PZT piezoelectric sheet) downward, the volume of the pump chamber 31 decreases, the pump chamber 31 is in a contracted state, the pump chamber 31 is in a medium pumping state, and the medium in the left Inlet channel 32 (i.e., inlet) is in the process from right to left, the medium in the right Outlet channel 33 (i.e., outlet) is in the process from left to right, that is, the liquid in the pump chamber 31 flows from the expansion port of the Inlet channel 32 to the contraction port of the Inlet channel 32 into the liquid storage chamber 1, and the liquid in the pump chamber 31 flows from the contraction port of the Outlet channel 33 to the expansion port of the Outlet channel 33 into the atomizing core 2. Further, although both the inlet channel 32 and the outlet channel 33 have liquid pumped out from the pump chamber 31, the resistance to the flow of liquid from the constriction to the expansion is smaller than the resistance to the flow of liquid from the expansion to the constriction, and the outlet channel 33 is flowing out more liquid than the inlet channel 32, the liquid mainly entering the atomizing core 2 from the outlet channel 33.

Therefore, during the periodic up-and-down movement of the regulating member 34 (PZT piezoelectric sheet), the compression/expansion state of the pump chamber 31 is periodically performed with the sinusoidal signal, and in each period, the liquid in the outlet channel 33 flows out and the liquid in the inlet channel 32 flows in, thereby realizing the directional transportation of the liquid. The liquid in the pump chamber 31 is dosed by the maximum positive displacement and the maximum negative displacement of the regulating member 34, whereby a dosed supply of liquid to the atomizing core 2 is achieved.

Referring to fig. 11, fig. 11 is a simulation result of a liquid supply assembly provided by the present application.

It has been found through experimentation that the liquid in the left Inlet channel 32 (i.e. the Inlet) is more or less and the liquid in the right Outlet channel 33 (i.e. the Outlet) is more or less, thereby effecting pumping of the aerosol-generating substrate in the reservoir 1 towards the atomizing core 2. The peak in the second cycle in fig. 11 is the peak at which the regulating member 34 is at the positive maximum displacement, i.e., the pump chamber 31 is in the expanded state, the amount of liquid entering the pump chamber 31 through the inlet channel 32 is 3.439kg/s, the amount of liquid entering the pump chamber 31 through the outlet channel 33 is 2.947kg/s, and the peak valley at the boundary between the second cycle and the third cycle is the peak at which 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 showing viscosity-temperature relationship of different media according to the present application.

It was found by experiment that the viscosity of different media at different temperatures was different, but the viscosity was reduced with increasing temperature. Fig. 12 is a graph of viscosity versus temperature for a portion of an aerosol-generating substrate nebulizable by an electronic nebulizing device, all having a viscosity above 150cp at ambient temperature. Since the liquid supply assembly 3 is a micropump, both the inlet channel 32 and the outlet channel 33 are of a convergent-divergent pore structure, the viscosity of the aerosol-generating substrate is too high for delivery. The aerosol-generating substrate entering the liquid supply assembly 3 is therefore conveniently transported by heating it to a reduced viscosity, and the heating temperature of the aerosol-generating substrate within the pump chamber 31 is set to 30-80 ℃, the specific heating temperature being set in dependence on 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 viscosity of less than 50cp, that is to say, preferably, the aerosol-generating substrate entering the pump chamber 31 of the liquid supply assembly 3 is 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 viscosity of less than 30cp, that is, preferably to a temperature of 60-80 ℃.

Referring to fig. 13, fig. 13 is a flowchart of an operation process of the electronic atomizing device provided by the present application.

The operation of the electronic atomizing device is described as follows:

1) Preheating, that is, before the first suction, the liquid level in the liquid storage cavity 1 is higher than the liquid level in the pump cavity 31 of the liquid supply assembly 3 in the vertical direction, and the aerosol generating substrate is filled in the pump cavity 31 in the state that the electronic atomizing device is vertically placed. When the user wants to use the electronic atomizing device, the first detecting element 12 is triggered to start the electronic atomizing device, and the controller 9 controls the auxiliary heating assembly 4 to operate in response to the start signal of the first detecting element 12. That is, when the electronic atomizing device 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 be 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 operation of the regulator 34 to deliver a metered amount of aerosol-generating substrate to the atomizing 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, and the controller 9 controls the battery 8 to supply power to the regulating member 34, so that the liquid supply assembly 3 conveys a fixed amount of aerosol-generating substrate to the porous liquid guide member 22 of the atomizing core 2, and at this time, the preparation is completed, followed by a normal suction flow. Wherein the preset temperature is 30-80 ℃, specifically selected according to the characteristics of the aerosol-generating substrate.

3) Suction nebulization after the controller 9 controls the operation of the regulating member 34 to deliver a metered amount of aerosol-generating substrate to the nebulizing core 2, the controller 9 controls the operation of the nebulizing core 2 in response to a signal of the second detection element (e.g. suction negative pressure detected by the air flow sensor). That is, the second detecting element feeds back its detection signal to the controller 9, and based on this signal, the controller 9 controls the battery 8 to supply power to the heat generating element 21 of the atomizing core 2, 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 intake passage 7 and sucked by the user. After the suction operation is completed, the controller 9 controls the battery 8 to stop supplying power to the atomizing core 2, so that the heat generating member 21 of the atomizing core 2 stops operating.

4) The suction interval fluid infusion controller 9 is also adapted to determine the suction interval and to control the auxiliary heating assembly 4 during the suction interval to heat the aerosol-generating substrate again into the pump chamber 31 of the fluid supply assembly 3 to a preset temperature and to control the operation of the regulator 34 to deliver a metered amount of aerosol-generating substrate again to the atomizing core 2. That is, after one puff is completed, the controller 9 controls the battery 8 to power 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 power the regulator 34 to deliver a metered amount of aerosol-generating substrate to the aerosol-generating core 2 ready for the next puff.

Wherein the suction interval is the time interval between completion of one suction and initiation of the next suction. In one embodiment, the interval of pumping is such that fluid replenishment occurs between the completion of each pumping event and the initiation of the next pumping event, i.e., 1 fluid replenishment event per pumping event, thereby ensuring that the aerosol concentration per pumping event is the same. In another embodiment, the interval of suction is such that the liquid is replenished between the completion of a predetermined number of suction and the start of the next predetermined number of suction, and the predetermined number of suction is greater than 1, for example, one liquid replenishment per 3 suction, thereby reducing the number of liquid replenishment and prolonging the service life of the liquid supply assembly 3.

In the manner of filling liquid by sucking for a plurality of times, the liquid supply amount of the liquid supply assembly 3 for filling liquid for each time is enough for the user to suck for a plurality of times. Because the consumption of aerosol generating substrates is different when different users suck once, in the initial setting, the liquid supplying component 3 supplements liquid according to the preset suction interval, the liquid supplementing frequency or the liquid supplementing interval is set according to the suction habits of most users, after a period of use, the controller 9 adjusts the liquid supplementing frequency of the liquid supplying component 3 at the suction interval according to the use habits of the users, and the phenomenon that liquid leakage occurs due to excessive liquid supplementing or dry burning occurs due to insufficient liquid supplementing is prevented. For example, if the average time period per puff of the user is greater than the average time period per puff of the majority of users, then the average consumption per puff of the user is indicated to be greater than the average consumption per puff of the majority of users, and typically, if the average time period per puff of the user is greater than the average time period per puff of the majority of users, then the fluid replacement frequency needs to be increased, and conversely, the fluid replacement frequency needs to be decreased.

Further, in order to avoid the simultaneous operation of the liquid supply assembly 3 and the atomizing core 2 of the electronic atomizing device, if the suction action of the user is detected in the liquid supply assembly 3 liquid supplementing process, liquid supplementing is stopped, and prompt information is further sent out, so that the simultaneous operation of the liquid supply assembly 3 and the atomizing core 2 caused by the fact that the user rapidly sucks and supplements liquid for one time at insufficient suction intervals is avoided.

After the electronic atomizing device is unsealed for the first time, the working process of 1) preheating and 2) pre-pumping liquid is completed, and the normal pumping state is the circulation of 3) pumping atomization and 4) pumping interval oil supplementing. By arranging the liquid supply assembly 3 in the electronic atomization device, quantitative liquid supply to the atomization core 2 is realized, the problem of uneven transportation of aerosol generating matrix components caused by liquid guiding by the porous liquid guide 22 of the atomization core 2 is avoided, the mouthfeel of aerosol is continuous, and the service life and safety of the liquid supply assembly 3 are ensured because no valve plate is arranged in the liquid supply assembly 3, and the valve plate is prevented from being corroded or foreign particles are prevented from being mixed into the aerosol generating matrix conveyed to the atomization core 2. The liquid supply assembly 3 supplements the atomizing core 2 by utilizing the suction interval, so that the volume of the liquid supply assembly 3 can be reduced, the volume of the electronic atomizing device can be reduced, and the cost can be saved.

The electronic atomization device comprises a liquid storage cavity, an atomization core and a liquid supply assembly, wherein the liquid storage cavity is used for storing aerosol-generating substrates, the atomization core is used for atomizing the aerosol-generating substrates, the liquid supply assembly is provided with a pump cavity, an inlet channel and an outlet channel, the inlet channel and the outlet channel are of a shrinkage expansion hole structure, one end of the inlet channel is communicated with the liquid storage cavity, 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, the other end of the outlet channel is connected to the atomization core, the liquid supply assembly comprises an adjusting piece which is used for periodically adjusting the volume of the pump cavity, so that the liquid flowing from the inlet channel to the pump cavity is larger than the liquid flowing from the pump cavity to the inlet channel, and the liquid flowing from the pump cavity to the outlet channel is larger than the liquid flowing from the outlet channel to the pump cavity, and therefore the aerosol-generating substrates in the liquid storage cavity are pumped to the atomization core. Through the arrangement, the active and quantitative liquid supply to the atomizing core is realized, so that the atomizing core consumes various components in the aerosol generating matrix more uniformly in the atomizing process, and the active liquid supply is realized through the liquid supply assembly, so that the durability and the safety of the liquid supply are improved, and the performance of the electronic atomizing device is improved.

The foregoing description is only a partial embodiment of the present application, and is not intended to limit the scope of the present application, and all equivalent devices or equivalent processes using the descriptions and the drawings of the present application or directly or indirectly applied to other related technical fields are included in the scope of the present application.

Claims

1. An electronic atomizing device, comprising:

a reservoir for storing an aerosol-generating substrate;

an atomizing core for atomizing 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 of a contracted expansion hole structure, one end of the inlet channel is communicated with the liquid storage cavity, 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, the other end of the outlet channel is connected to the atomization core, the liquid supply component comprises an adjusting piece which is used for periodically adjusting the volume of the pump cavity, so that the volume of liquid flowing from the inlet channel to the pump cavity is larger than that of liquid flowing from the pump cavity to the inlet channel, the volume of liquid flowing from the pump cavity to the outlet channel is larger than that of liquid flowing from the outlet channel to the pump cavity, the aerosol generating substrate in the liquid storage cavity is pumped to the atomization core, the contracted expansion hole structure is conical, the contracted opening of the inlet channel is communicated with the liquid storage cavity, the contracted opening of the inlet channel is communicated with the pump cavity, the contracted opening of the outlet channel is communicated with the pump cavity, the expanded opening of the outlet channel is connected to the atomization core, the inlet channel and the outlet channel comprise a first side edge and a second side edge which are symmetrical, the inlet channel and the contracted opening of the inlet channel are communicated with the inlet channel and the outlet channel are arranged at the same angle as the side edge of the inlet channel 10, 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 a central shaft, wherein the included angle between the first side edge and the second side edge is 30-40 degrees;

a supplemental heating assembly that heats the aerosol-generating substrate entering the liquid supply assembly;

And the controller is used for judging the suction interval, controlling the auxiliary heating assembly to heat the aerosol-generating substrate in the liquid supply assembly to a preset temperature in the suction interval, and controlling the regulating piece to work so as to convey a fixed amount of aerosol-generating substrate to the atomization core.

2. An electronic atomizing device according to claim 1, wherein the auxiliary heating assembly heats the aerosol-generating substrate entering the pump chamber to a viscosity of less than 50 cp.

3. An electronic atomizing device according to claim 1, wherein the auxiliary heating assembly heats the aerosol-generating substrate entering the pump chamber to a viscosity of less than 30 cp.

4. The electronic atomizing device according to claim 1, wherein the inlet channel has a length L1, the inlet channel has a constriction of a size W1, L1/W1 is 11:1-15:1, the outlet channel has a length L2, the outlet channel has a constriction of a size W2, and L2/W2 is 11:1-15:1.

5. The electronic atomizing device of claim 1, further comprising a controller and a battery, wherein the regulating member comprises a piezoelectric ceramic plate and a substrate, and wherein the controller controls the battery to apply an alternating current to the piezoelectric ceramic plate and the substrate to cause the pump chamber to periodically expand/compress.

6. The electronic atomizing device according to claim 1, wherein the liquid supply assembly further comprises a base and a cover plate, a groove, an inlet groove and an outlet groove are provided on the base, the inlet groove and the outlet groove are respectively communicated with the groove, the regulating member covers the groove, and the cover plate covers the inlet groove and the outlet groove, and the pump chamber, the inlet passage and the outlet passage are respectively formed.

7. The electronic atomizing device according to claim 6, wherein the base is further provided with a liquid inlet groove and a liquid outlet groove, the liquid inlet groove is arranged at an end of the inlet groove away from the inner space of the groove and is communicated with the inlet groove, the liquid outlet groove is arranged at an end of the outlet groove away from the inner space of the 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.

8. The electronic atomizing device of claim 1, further comprising a controller and a first sensing element, wherein the controller controls operation of the auxiliary heating assembly in response to an activation signal of the first sensing element.

9. An electronic atomizing device as set forth in claim 8, wherein said controller controls operation of said regulator to deliver a metered amount of aerosol-generating substrate to said atomizing core in response to said auxiliary heating assembly heating the aerosol-generating substrate in said liquid supply assembly to a preset temperature.

10. The electronic atomizing device of claim 9, wherein the predetermined temperature is 30-80 ℃.

11. The electronic aerosol-generating device according to claim 9, further comprising a second detection element, wherein the controller controls the operation of the aerosol-generating core in response to a detection signal from the second detection element after the controller controls the operation of the regulator to deliver a metered amount of aerosol-generating substrate to the aerosol-generating core.