CN115487383B - Control assembly and electronic atomization device - Google Patents

Control assembly and electronic atomization device Download PDF

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Publication number
CN115487383B
CN115487383B CN202110673230.4A CN202110673230A CN115487383B CN 115487383 B CN115487383 B CN 115487383B CN 202110673230 A CN202110673230 A CN 202110673230A CN 115487383 B CN115487383 B CN 115487383B
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CN
China
Prior art keywords
liquid
assembly
atomizing
microporous
needle tube
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Active
Application number
CN202110673230.4A
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Chinese (zh)
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CN115487383A (en
Inventor
阳胜
程时毅
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Shenzhen Smoore Technology Ltd
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Shenzhen Smoore Technology Ltd
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Priority to CN202110673230.4A priority Critical patent/CN115487383B/en
Priority to PCT/CN2022/093946 priority patent/WO2022262520A1/en
Publication of CN115487383A publication Critical patent/CN115487383A/en
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Publication of CN115487383B publication Critical patent/CN115487383B/en
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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M15/00—Inhalators
    • A61M15/0065—Inhalators with dosage or measuring devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M15/00—Inhalators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M15/00—Inhalators
    • A61M15/0001—Details of inhalators; Constructional features thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M15/00—Inhalators
    • A61M15/06—Inhaling appliances shaped like cigars, cigarettes or pipes

Abstract

The invention discloses a control assembly and an electronic atomization device, wherein the control assembly comprises a driving assembly and a liquid storage assembly, wherein the driving assembly is used for supplying liquid in the liquid storage assembly to the atomization assembly to form liquid to be atomized; the controller is used for controlling the driving assembly to work and detecting whether the atomizing assembly is provided with liquid to be atomized or not; the controller controls the driving assembly to supply liquid to the atomizing assembly in response to the liquid supply signal received by the controller, and detects whether the atomizing assembly has liquid to be atomized or not; and in response to the controller detecting that the atomizing assembly has liquid to be atomized, the controller controls the drive assembly to continue supplying liquid to provide a constant dose of liquid to be atomized. By the method, the atomized dosage is accurately controlled, so that the atomization inhalation treatment achieves the expected treatment effect.

Description

Control assembly and electronic atomization device
Technical Field
The invention relates to the technical field of atomizers, in particular to a control assembly and an electronic atomizing device.
Background
Among respiratory disease treatment methods, aerosol inhalation treatment is an important and effective treatment method. The aerosol inhalation treatment is to atomize the liquid medicine into tiny liquid drops by an atomizer, and the patient inhales the medicine into the respiratory tract and the lung by breathing, so that the liquid medicine is deposited in the respiratory tract or the lung, thereby achieving the purpose of painless, rapid and effective treatment.
Traditional atomizer, at atomizing in-process, actual atomizing dosage has the deviation with predetermineeing the atomizing dosage, influences the atomizing precision, and then influences the treatment.
Disclosure of Invention
In view of the above, the present invention provides a control assembly to solve the technical problem that the atomized dosage of the liquid medicine cannot be precisely controlled in the prior art.
In order to solve the technical problems, the first technical scheme provided by the invention is as follows: there is provided a control assembly comprising: a drive assembly and a controller; the driving assembly is used for providing the liquid in the liquid storage assembly to the atomizing assembly to form liquid to be atomized; the controller is used for controlling the driving assembly to work and detecting whether the atomizing assembly is provided with the liquid to be atomized or not; wherein, in response to the controller receiving a liquid supply signal, the controller controls the driving assembly to supply liquid to the atomizing assembly and detects whether the atomizing assembly has the liquid to be atomized; and in response to the controller detecting that the atomizing assembly has the liquid to be atomized, the controller controls the drive assembly to continue to supply liquid to provide a constant dose of the liquid to be atomized.
The atomizing assembly comprises a needle tube and a microporous atomizing sheet, the controller is respectively connected with the needle tube and the microporous atomizing sheet electrically, and the controller judges whether the atomizing assembly has the liquid to be atomized or not by detecting whether the needle tube is communicated with the microporous atomizing sheet through the liquid to be atomized or not.
The controller is used for controlling the driving assembly to supply liquid in a first stage in response to the liquid supply signal received by the controller, and the liquid supply in the first stage is continued until the controller detects that the needle tube is communicated with the microporous atomizing sheet; and responding to the controller to detect the conduction between the needle tube and the microporous atomizing sheet, the controller controls the driving assembly to perform second-stage liquid supply, and in the second-stage liquid supply process, the controller controls the driving assembly to flow out constant dosage of the liquid to be atomized from the liquid storage assembly.
When the controller controls the driving assembly to supply liquid in the first stage, the liquid to be atomized is adsorbed between the microporous atomizing sheet and the needle tube through surface tension, so that the controller detects that the microporous atomizing sheet is communicated with the needle tube.
Wherein the liquid supply amount in the first stage is less than 1 microliter.
Wherein the drive assembly comprises: the motor is connected with the controller; and one end of the push rod is connected with the motor, and the other end of the push rod is in butt joint with the liquid storage component and is used for pushing liquid in the liquid storage component into the needle tube under the drive of the motor and guiding the liquid into the space between the needle tube and the microporous atomization sheet through the needle tube.
The controller is used for controlling the motor to drive the push rod to move until the controller detects that the needle tube is communicated with the microporous atomizing sheet in response to the liquid supply signal received by the controller; and in response to the controller detecting that the needle tube is communicated with the microporous atomizing sheet, the controller controls the motor to count steps and reset the steps and then count constant steps again, so that the push rod is driven to move for a constant stroke.
When liquid is supplied in the first stage, if the liquid in the needle tube is in a first state, the push rod moves for a first stroke; if the liquid in the needle tube is in a second state, the push rod moves for a second stroke; if the liquid in the needle tube is in a third state, the push rod moves for a third stroke; the second stroke is greater than the third stroke, which is greater than the first stroke.
And the controller is used for further controlling the microporous atomizing sheet to perform atomizing operation in response to the fact that the controller detects that the needle tube is communicated with the microporous atomizing sheet.
Wherein, in response to the controller detecting disconnection between the needle tube and the microporous atomizing sheet, the controller controls the microporous atomizing sheet to stop atomizing operation.
The second technical scheme provided by the invention is that the liquid storage device comprises an atomization assembly and a control assembly, wherein the control assembly is used for providing liquid in the liquid storage assembly for the atomization assembly.
The atomizing assembly comprises a microporous atomizing sheet and a needle tube, wherein one end of the needle tube is arranged at intervals with the microporous atomizing sheet, and the other end of the needle tube is communicated with the liquid; the control assembly is used for conveying the liquid in the liquid storage assembly to the microporous atomizing sheet through the needle tube so as to form the liquid to be atomized.
The invention has the beneficial effects that: unlike the prior art, the controller receives the liquid supply signal, the controller controls the driving assembly to supply the liquid in the liquid storage assembly to the atomizing assembly, and starts to detect whether the atomizing assembly has the liquid to be atomized or not, the atomizing assembly has the liquid to be atomized, and the controller controls the driving assembly to continuously supply the constant dosage of the liquid to be atomized to the atomizing assembly. The driving assembly is controlled by the controller to provide liquid to be atomized for the atomizing assembly, and whether the atomizing assembly has the liquid to be atomized or not is detected, so that accurate control of atomized dosage is realized, and the atomization inhalation treatment achieves the expected treatment effect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, 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 invention, 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 invention.
FIG. 2 is a schematic cross-sectional view of an atomizing assembly provided by the present disclosure;
FIG. 3 is a perspective view of an atomizing base in an atomizing assembly provided by the present invention;
FIG. 4 is a perspective view of a first seal in an atomizing assembly according to the present disclosure;
FIG. 5 is an exploded view of a reservoir assembly provided by the present invention;
FIG. 6 is a schematic structural view of a first embodiment of a control assembly provided by the present invention;
FIG. 7 is a schematic view of a driving member in a first embodiment of a control assembly according to the present invention;
FIG. 8 is a schematic view of a push rod in a first embodiment of a control assembly according to the present invention;
FIG. 9 is a schematic cross-sectional view of a push rod in a first embodiment of a control assembly provided by the present invention;
FIG. 10 is a schematic cross-sectional view of another embodiment of a pushrod of the first embodiment of the control assembly provided by the present invention;
FIG. 11 is a schematic view of a second embodiment of a control assembly provided by the present invention;
FIG. 12 is a schematic cross-sectional view of a second embodiment of a control assembly provided by the present invention;
FIG. 13 is an exploded view of a second embodiment of a control assembly provided by the present invention;
FIG. 14 is a functional block diagram of a first embodiment of a control assembly provided by the present invention;
FIG. 15 is a schematic view of a needle provided by the present invention with residual liquid;
FIG. 16 is a schematic view of the vaporization of a liquid within a syringe provided by the present invention;
FIG. 17 is a schematic view of the liquids V1, V2 to be atomized provided by the present invention;
FIG. 18 is a functional block diagram of a second embodiment of a control assembly provided by the present invention;
Detailed Description
The invention 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 invention, but do not limit the scope of the present invention. Likewise, the following examples are only some, but not all, of the examples of the present invention, 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 invention.
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 invention, 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, back … …) in embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture (as shown in the drawings), and if the particular gesture changes, the directional indication changes accordingly. The terms "comprising" and "having" and any variations thereof in embodiments of the present invention 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 invention. 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.
Fig. 1 is a schematic structural diagram of an electronic atomization device according to the present invention.
The electronic atomization device can be used for atomizing liquid matrixes such as liquid medicine and the like, and is applied to medical equipment for treating upper and lower respiratory diseases so as to atomize medical medicines. The electronic atomization device comprises an atomization assembly 1, a liquid storage assembly 2 and a control assembly 3. In use, the atomizing assembly 1 and the reservoir assembly 2 are mounted on the control assembly 3. Wherein, the liquid storage component 2 is used for storing liquid medicine; the atomizing assembly 1 is used for atomizing liquid in the liquid storage assembly 2; the control assembly 3 comprises a controller 31 and a mounting cavity 321, the atomizing assembly 1 and the liquid storage assembly 2 are mounted in the mounting cavity 321, and the control assembly 3 is used for conveying liquid in the liquid storage assembly 2 to the atomizing assembly 1 and controlling the atomizing assembly 1 to work.
The atomizing assembly 1, the liquid storage assembly 2 and the control assembly 3 can be integrally arranged, can be detachably connected and are designed according to specific needs.
Fig. 2 is a schematic cross-sectional view of an atomizing assembly according to the present disclosure.
The atomizing assembly 1 comprises an atomizing housing 10, an atomizing base 11, a microporous atomizing sheet 12 and a needle tube 13. The microporous atomizing sheet 12 is arranged at one end of the atomizing seat 11 and is matched with the end part of the atomizing seat 11 to form an atomizing bin 14. The extending direction of the needle tube 13 is perpendicular to the extending direction of the microporous atomizing sheet 12. The extending direction of the needle tube 13 may be at other angles, for example, 60 degrees to 90 degrees, with respect to the extending direction of the microporous atomizing sheet 12, and is designed as needed. The needle tube 13 is fixed on the atomizing seat 11; one end of the needle tube 13 is arranged in the atomization bin 14 and is spaced from the microporous atomization sheet 12; in use, the other end of the needle tube 13 is inserted into the liquid storage component 2 to convey the liquid in the liquid storage component 2 to the microporous atomizing sheet 12 to form the liquid to be atomized. The microporous atomizer plate 12 is used for atomizing a liquid to be atomized. The liquid to be atomized is adsorbed between the microporous atomizing sheet 12 and the needle tube 13 by surface tension. A nozzle 15 is formed or arranged at one end of the atomization shell 10, and the microporous atomization sheet 12 and the needle tube 13 are arranged in the atomization shell 10 together with the atomization seat 11; wherein, suction nozzle portion 15 and micropore atomizing piece 12 and atomizing seat 11 enclose and establish the atomizing storehouse 14 intercommunication that forms, and the user is inhaled the liquid medicine that micropore atomizing piece 12 atomized through suction nozzle portion 15.
Referring to fig. 3 and fig. 4, fig. 3 is a perspective view of an atomization seat in an atomization assembly according to the present application, and fig. 4 is a perspective view of a first seal in the atomization assembly according to the present application.
One end of the atomizing base 11 is provided with a mounting groove 110, and the mounting groove 110 is used for mounting the microporous atomizing sheet 12; the mounting groove 110 is shaped to match the shape of the microporous atomizer plate 12. A first seal 111 is provided at the periphery of the microporous atomizing sheet 12, and the microporous atomizing sheet 12 is disposed in the mounting groove 110 together with the first seal 111. The first sealing member 111 plays a role in fixing the microporous atomizing sheet 12, and prevents the microporous atomizing sheet 12 from shaking at one end of the atomizing base 11 to influence the process of atomizing the liquid medicine.
The microporous atomizing sheet 12 comprises a piezoelectric ceramic sheet, a metal substrate, a first electrode electrically connected to the piezoelectric ceramic sheet, and a second electrode electrically connected to the metal substrate, both of which are electrically connected to the controller 31. The metal substrate is a circular sheet, the piezoelectric ceramic sheet is a circular ring, and the diameter of the metal substrate is larger than the inner diameter of the piezoelectric ceramic sheet. The central area of the piezoelectric ceramic plate is provided with a through hole, and the area of the metal substrate corresponding to the central area of the piezoelectric ceramic plate is provided with a plurality of micropores; that is, the microporous atomizing sheet 12 includes a microporous region provided with a plurality of micropores which communicate the nozzle portion 15 with the atomizing bin 14. In this embodiment, the central area of the metal substrate protrudes in a direction approaching the nozzle 15, so as to provide a larger adhesion surface for the liquid to be atomized, thereby increasing the adhesion force of the liquid to be atomized. In other embodiments, the metal substrate may be a planar structure, and is selected according to need, which is not limited in the present application.
The first seal 111 includes a first panel 1111, a second panel 1112, and a sidewall 1113. The first panel 1111 and the second panel 1112 are disposed opposite to each other. The first panel 1111 is disposed at one end of the sidewall 1113, and the second panel 1112 is disposed at the other end of the sidewall 1113; that is, the first panel 1111 and the second panel 1112 are disposed on the sidewall 1113 at a distance, and the sidewall 1113 connects the first panel 1111 and the second panel 1112. In one embodiment, sidewall 1113 connects the edges of first panel 1111 and second panel 1112 to form a unitary structure; preferably, the first panel 1111, the second panel 1112 and the side wall 1113 are integrally formed. The material of the first sealing member 111 is rubber, silicone rubber, or the like.
The first panel 1111 is disposed on a side of the second panel 1112 near the nozzle portion 15. The first panel 1111, the second panel 1112 and the sidewall 1113 are all circular ring structures; the outer diameter of the first panel 1111 is the same as the outer diameter of the second panel 1112; the inner diameter of the first panel 1111 and the inner diameter of the second panel 1112 may be the same or different, and may be designed as needed; the inner diameter of the sidewall 1113 is the same as the outer diameters of the first panel 1111 and the second panel 1112. The thickness of the first panel 1111 and the second panel 1112 are the same, and the difference between the inner and outer diameters of the sidewall 1113 is the same as the thickness of the first panel 1111 and the second panel 1112.
The first panel 1111, the second panel 1112 and the sidewall 1113 together enclose an atomization sheet cavity 1114 for accommodating the microporous atomization sheet 12; that is, the microporous atomizer sheet 12 is located between the first panel 1111 and the second panel 1112, and does not exceed the area enclosed by the side wall 1113. The central through-hole of the first panel 1111 and the central through-hole of the second panel 1112 communicate with each other and can expose the micro-porous region on the micro-porous atomizing sheet 12. In one embodiment, the first panel 1111 is coaxially disposed with the second panel 1112, and the inner diameter of the first panel 1111 is greater than the inner diameter of the second panel 1112.
An opening 1115 is provided in the first seal 111 to facilitate installation of the microporous atomizer plate 12 into the atomizer plate chamber 1114. In this embodiment, the opening 1115 is provided at the junction of the side wall 1113 and the first panel 1111, i.e., the opening 1115 is cut off at the edge of the first sealing member 111. The opening 1115 may also be provided in the sidewall 1113, so long as the microporous atomizer plate 12 is capable of being mounted in the atomizer plate cavity 1114, which is not limited in this disclosure.
In other embodiments, the microporous atomizing sheet 12 may have other shapes such as a square shape, the structure of the first sealing member 111 is matched with the microporous atomizing sheet 12, and the shape of the mounting groove 110 is matched with the microporous atomizing sheet, and the shape is selected according to the need.
With continued reference to fig. 3, a protrusion 112 is provided on the bottom wall of the mounting groove 110, the height of the protrusion 112 being the same as the thickness of the second panel 1112. The protrusion 112 is embedded in the central through hole of the second panel 1112. The bulge 112 is provided with an opening 113, and the opening 113 is arranged corresponding to the micropore area of the micropore atomization sheet 12; that is, one end of the atomizing base 11, which is close to the microporous atomizing sheet 12, is provided with an opening 113, the microporous atomizing sheet 12 covers the opening 113, the microporous region is suspended at the opening 113, and the microporous atomizing sheet 12 and the opening 113 are matched to form an atomizing bin 14. On the projection 112, an annular groove 114 is provided around the opening 113 for mounting a second seal 115; the size of the annular groove 114 is matched with the size of the second sealing element 115; that is, an annular groove 114 is arranged at one end of the atomizing base 11 close to the microporous atomizing sheet 12, and a second sealing element 115 is arranged in the annular groove 114; the non-microporous region of microporous atomizer sheet 12 covers annular recess 114. The second sealing element 115 is a circular ring, and the second sealing element 115 is made of rubber, silica gel or the like; the annular recess 114 is annular. The second seal 115 serves to prevent the liquid pumped by the needle tube 13 from leaking out of the nebulization cartridge 14, so that the accuracy of the dose of nebulized medical fluid is reduced. That is, an annular groove 114 is provided on the protrusion 112, and a second seal 115 is provided in the annular groove 114; the projection of the annular groove 114 onto the plane of the microporous atomizing sheet 12, the annular groove 114 is disposed around the microporous region on the microporous atomizing sheet 12, i.e., the inner diameter of the annular groove 114 is larger than the diameter of the microporous region.
In one embodiment, the cross-section of the protrusion 112 is circular and the cross-section of the aperture 113 is circular and is concentrically disposed; the outer diameter of the annular groove 114 is equal to the inner diameter of the through hole in the central region of the piezoelectric ceramic sheet of the microporous atomizing sheet 12; a second seal 115 is disposed around the microporous region and abuts the metal substrate of the microporous atomizing sheet 12.
In a specific implementation, the opening 113 may be a through hole or a blind hole; specifically, the aperture of the opening 113 is larger than the outer diameter of the needle tube 13, and one end of the needle tube 13 close to the microporous atomizing sheet 12 is spaced from the side wall of the opening 113. In this embodiment, the opening 113 is a through hole, and the atomization bin 14 is of an open structure, so that the liquid medicine sprayed reversely can flow out of the atomization bin 14 along the side wall of the atomization bin 14, and the influence of the liquid medicine sprayed reversely on the atomization process is avoided. In another embodiment, the opening 113 is a blind hole, and the atomization bin 14 is of a closed structure, so that the back-sprayed liquid medicine can flow along the side wall of the atomization bin 14 in a direction away from the microporous atomization sheet 12, and finally is deposited at the bottom of the atomization bin 14, so that the influence of the back-sprayed liquid medicine on the atomization process is avoided. That is, the opening 113 is formed at one end of the atomizing seat 11, which is close to the microporous atomizing sheet 12, so that the liquid medicine reversely sprayed in the atomizing process of the microporous atomizing sheet 12 can flow along the side wall of the atomizing bin 14 in the direction away from the microporous atomizing sheet 12, so that bubbles or water films are prevented from being formed between the needle tube 13 and the microporous atomizing sheet 12 by the liquid medicine reversely sprayed after the atomization of the liquid medicine is completed, whether the liquid to be atomized still exists or not can not be accurately detected by the controller 31, and the controller 31 can further control the microporous atomizing sheet 12 to atomize, so that the problem of dry burning occurs, and the service life of the electronic atomizing device is influenced.
In other embodiments, the aperture of the opening 113 is equal to the outer diameter of the needle tube 13, and the micro atomization bin 14 formed by matching the micro-porous atomization sheet 12 with the end part of the atomization seat 11 is of a closed structure and can accurately control the amount of atomized liquid. It will be appreciated that the micro-atomizing bin 14 of this construction does not allow the reverse spray of liquid medicine to flow along the side walls of the atomizing bin 14 in a direction away from the microporous atomizing sheet 12, which would have a certain effect on the atomization process. In addition, the atomization bin 14 is a miniature atomization bin 14, and the closed structure also has the probability that liquid is adsorbed to the bottom of the closed structure, so that atomization cannot be performed.
With continued reference to fig. 2, the atomizing chamber 14, needle cannula 13, and the microporous region of microporous atomizing sheet 12 are coaxially disposed. The largest cross-sectional area of the atomizing bin 14 is less than four times the area of the microporous region of the microporous atomizing sheet 12. In this embodiment, the cross-section and the micropore area of the atomizing chamber 14 are both circular, and the diameter of the atomizing chamber 14 is greater than the diameter of the micropore area and less than twice the diameter of the micropore area. Specifically, the diameter of the atomization bin 14 is 4mm-5mm, and the distance between one end of the needle tube 13, which is close to the microporous atomization sheet 12, and the side wall of the atomization bin 14 is 1.2mm-1.8mm, so that the liquid to be atomized pumped out through the needle tube 13 is adsorbed between the microporous atomization sheet 12 and the needle tube 13, atomized liquid medicine at any angle is realized, and the dosage of the atomized liquid medicine is accurately controlled. If the diameter of the atomizing bin 14 is too large, for example, greater than 5mm, the liquid medicine adsorbed outside the micropore area increases, the area of the liquid medicine subjected to back spraying increases, the amount of the liquid medicine subjected to back spraying increases, and the accuracy of the dosage of the liquid medicine sucked by a user decreases; if the diameter of the atomizing chamber 14 is too small, for example, less than 4mm, the liquid to be atomized may flow out to the side wall of the atomizing chamber in addition to being adsorbed between the microporous atomizing sheet 12 and the needle 13, the residual amount of the non-atomized liquid medicine increases, and the accuracy of sucking the liquid medicine dose by the user decreases.
In one embodiment, the nebulization cartridge 14 is formed of an aperture 113 and a microporous nebulization sheet 12, the diameter of the nebulization cartridge 14 being the aperture of the aperture 113.
The distance between the end of the needle tube 13 close to the microporous atomizing sheet 12 and the microporous atomizing sheet 12 is 0.2mm-0.4mm. If the distance between the end of the needle tube 13, which is close to the microporous atomizing sheet 12, and the microporous atomizing sheet 12 is too far, for example, greater than 0.4mm, the amount of the liquid medicine adsorbed on the side wall of the atomizing bin 14 is increased, part of the liquid medicine cannot be adhered to the microporous atomizing sheet 12, atomization cannot be realized, and the accuracy of the dosage of the liquid medicine sucked by a user is reduced; if the distance between the end of the needle tube 13, which is close to the microporous atomizing sheet 12, and the microporous atomizing sheet 12 is too short, for example, less than 0.2mm, after the atomization of the liquid medicine is completed, the liquid medicine forms bubbles or a water film between the needle tube 13 and the microporous atomizing sheet 12, so that the controller 31 cannot accurately detect whether the liquid to be atomized still exists, and further the controller 31 continuously controls the microporous atomizing sheet 12 to atomize, so that the problem of dry burning occurs, and the service life of the electronic atomizing device is affected.
In one embodiment, the needle tube 13 is provided with a sleeve 131 at one end near the microporous atomizing sheet 12, and the outer wall of the sleeve 131 is spaced from the side wall of the atomizing bin 14. The sleeve 131 is used for increasing the surface area of the needle tube 13 near one end of the microporous atomizing sheet 12, namely increasing the liquid adhesion area of the needle tube 13, and further increasing the adhesion force of the liquid to be atomized, so that the liquid to be atomized pumped out by the needle tube 13 is better adsorbed between one end of the needle tube 13 near the microporous atomizing sheet 12 and the microporous atomizing sheet 12. In this embodiment, the sleeve 131 has a hollow cylindrical structure, the inner diameter of the sleeve 131 is the same as the outer diameter of the needle tube 13, and the outer diameter is smaller than the diameter of the opening 113; the sleeve 131 is made of silica gel, rubber, or the like. The sleeve 131 may be a solid structure, and the needle tube 13 may be inserted.
The needle tube 13 is a hollow metal member. In this embodiment, the needle tube 13 is a hollow cylindrical metal tube, the inner diameter of the needle tube 13 is 0.7mm-1.0mm, and the material of the needle tube 13 is preferably stainless steel. The needle tube 13 can also be a hollow metal piece with other structures, and only the liquid in the liquid storage component 2 can be pumped out to the microporous atomizing sheet 12 to form liquid to be atomized; the material of the needle tube 13 is not required to react with the liquid medicine to be atomized, so that the liquid medicine is deteriorated.
In one embodiment, needle cannula 13 may also be used for detection. A conductive member 132 is provided on the needle tube 13, and the conductive member 132 is electrically connected to the controller 31. In this embodiment, the conducting member 132 is a spring needle. In other embodiments, other components may be used for the conductive member 132, and only the conductive member 132 is needed to electrically connect the needle cannula 13 and the controller 31.
The metal substrate in the microporous atomizing sheet 12 is electrically connected with the controller 31 through a wire, the needle tube 13 is electrically connected with the controller 31 through a conducting piece 132 and a wire, and the needle tube 13 and the metal substrate form an impedance sensor, namely, the needle tube 13 and the metal substrate in the microporous atomizing sheet 12 are equivalent to two metal electrodes. When the liquid in the liquid storage component 2 is pumped out by the needle tube 13, the liquid to be atomized is adsorbed between one end of the needle tube 13, which is close to the microporous atomizing sheet 12, and the metal substrate in the microporous atomizing sheet 12 is communicated with the needle tube 13, and the resistance between the metal substrate in the microporous atomizing sheet 12 and the needle tube 13 is small and is about 0; when the liquid to be atomized is atomized, no liquid to be atomized exists between one end of the needle tube 13, which is close to the microporous atomizing sheet 12, and the metal substrate in the microporous atomizing sheet 12 and the needle tube 13 are in an open state, and the resistance between the metal substrate in the microporous atomizing sheet 12 and the needle tube 13 is far greater than 0, and is simultaneously greater than the resistance of the metal substrate in the microporous atomizing sheet 12 and the needle tube 13 in a conducting state through the liquid to be atomized. The controller 31 detects the resistance between the metal substrate in the microporous atomizing sheet 12 and the needle tube 13, and then judges whether the liquid to be atomized exists. That is, if the controller 31 detects that the resistance between the metal substrate in the microporous atomizing sheet 12 and the needle tube 13 is close to 0, it is determined that the liquid to be atomized exists between the microporous atomizing sheet 12 and the needle tube 13, and the microporous atomizing sheet 12 is controlled to atomize the liquid to be atomized; if the controller 31 detects that the resistance between the metal substrate in the microporous atomizing sheet 12 and the needle tube 13 is far greater than 0, it is determined that the liquid to be atomized between the microporous atomizing sheet 12 and the needle tube 13 is about to be consumed or has been consumed, so as to control the microporous atomizing sheet 12 to stop working directly or in a delayed manner (the specific value of the extension time is set empirically, for example, 2 s).
In another embodiment, the needle tube 13 is made of silica gel, plastic, etc., and the needle tube 13 has no detection function and can only be used for pumping the liquid in the liquid storage component 2 to the microporous atomization sheet 12.
The liquid is pumped out of the needle tube 13 and then adsorbed on the microporous atomizing sheet 12 due to the surface tension and adhesion force of the liquid. The liquid is located between the end of the needle tube 13 near the microporous atomizing sheet 12 and spreads all around when the liquid reaches the front edge of the atomizing bin 14. When the microporous atomizing sheet 12 is operated, the liquid is sprayed to the nozzle portion 15. In the atomization process, as the liquid is consumed, the unagglomerated liquid continuously moves to the micro-pore region of the micro-pore atomizing sheet 12 under the action of atmospheric pressure, and finally is completely atomized. Under the combined action of the surface tension, the adhesive force and the atmospheric pressure of the liquid, the process of delivering the liquid by the needle tube 13 and atomizing the liquid is completely free from the restriction of the direction and the gravity. Therefore, in other embodiments, the needle tube 13 and the microporous atomizing sheet 12 may be disposed in parallel, and other structures are changed accordingly, so that the working principles of the needle tube 13 and the microporous atomizing sheet 12 are the same as those described above, and will not be repeated.
The end of the atomizing seat 11 far away from the microporous atomizing sheet 12 is provided with a containing groove 116, and the containing groove 116 is used for containing the liquid storage component 2. One end of the needle tube 13 far away from the microporous atomizing sheet 12 is arranged in the accommodating groove 116, so that one end of the needle tube 13 far away from the microporous atomizing sheet 12 is inserted into the liquid storage component 2, and liquid in the liquid storage component 2 is pumped out onto the microporous atomizing sheet 12.
Fig. 5 is an exploded view of a liquid storage assembly according to the present invention.
The liquid storage assembly 2 comprises a liquid storage shell 21, a liquid storage cover 22, a sealing plug 23 and a piston 24. One end of the liquid storage shell 21 is provided with a liquid storage cover 22, and the other end is provided with a piston 24. A sealing plug 23 is arranged at one end of the liquid storage cover 22, which is close to the liquid storage shell 21, and the sealing plug 23 is used for sealing the liquid storage shell 21 to prevent liquid leakage in the liquid storage assembly 2. The liquid storage shell 21, the sealing plug 23 and the piston 24 enclose a liquid storage bin, and the liquid storage bin is used for storing liquid to be atomized. An opening may be provided in the reservoir cap 22 to expose a portion of the sealing plug 23.
The liquid storage component 2 is arranged in the mounting cavity 321 of the control component 3, and one end of the liquid storage component 2 provided with the sealing plug 23 faces to the opening of the mounting cavity 321, so that the needle tube 13 in the atomization component 1 can be conveniently inserted into the liquid storage component 2. The end of the liquid storage component 2 provided with the piston 24 faces the bottom of the mounting cavity 321, so that the components in the control component 3 can push the piston 24 conveniently, and the liquid in the liquid storage component 2 is conveyed into the needle tube 13 and then reaches the microporous atomization sheet 12.
Fig. 6 is a schematic structural diagram of a first embodiment of a control assembly according to the present invention.
The control assembly 3 further comprises a control housing 32, a housing seat 33, a push rod 34, a driving member 35, a battery 36.
One end of the control housing 32 is provided with a mounting cavity 321, and the mounting cavity 321 is used for accommodating the atomizing assembly 1 and part of the liquid storage assembly 2; part of the liquid storage assembly 2 is arranged in the accommodating groove 116 of the atomizing assembly 1 and is accommodated in the mounting cavity 321 together with the atomizing assembly 1. The mounting cavity 321 may be a ring body, and in this embodiment, the mounting cavity 321 is a ring shape. The mounting cavity 321 and the control housing 32 are fixed together by means of glue, bolts, etc., and preferably the mounting cavity 321 is integrally formed with the control housing 32. In one embodiment, the control housing 32 includes top and bottom walls disposed in spaced apart relation and annular side walls connecting the top and bottom walls. The top wall has a through hole as a mounting cavity 321 near the side wall, the through hole communicating the inner space of the control housing 32 with the outside.
The accommodating seat 33 is disposed in the control housing 32 and is fixedly connected with the control housing 32. The accommodating seat 33 is disposed at one end of the mounting cavity 321 near the bottom wall of the control housing 32, and the inner space of the accommodating seat 33 is communicated with the mounting cavity 321. The accommodating seat 33 and the mounting cavity 321 may be integrally formed. The accommodating seat 33 is used for accommodating part of the liquid storage assembly 2. After the atomizing assembly 1 is inserted into the mounting cavity 321, one end of the accommodating seat 33, which is close to the mounting cavity 321, is fixedly connected with the atomizing seat 11 in the atomizing assembly 1, for example, by means of bolts, clamping, magnetic force piece adsorption and the like. In this embodiment, they are fastened together by means of bolts. The end of the housing seat 33 adjacent to the mounting cavity 321 and the end of the atomizing seat 11 adjacent to the housing seat 33 are each provided with a mounting structure (e.g., a mounting hole) for facilitating fixing the atomizing seat 11 and the housing seat 33 together.
The push rod 34 is disposed at an end of the receiving seat 33 remote from the mounting cavity 321. The push rod 34 is movably connected with the accommodating seat 33, and the push rod 34 is abutted with the liquid storage assembly 2 arranged in the accommodating seat 33. One end portion of the push rod 34 is accommodated in the accommodation seat 33, and one end of the push rod 34 close to the driving member 35 and the driving member 35 are located outside the accommodation seat.
The driving member 35 is disposed at an end of the push rod 34 away from the accommodating seat 33. The driving member 35 is used for driving the push rod 34 to move towards the direction of approaching the liquid storage assembly 2, so that the push rod 34 pushes the piston 24 in the liquid storage assembly 2 to move towards the direction of approaching the atomization assembly 1, and liquid in the liquid storage assembly 2 is conveyed to the microporous atomization sheet 12.
The battery 36 is used to provide electrical power to the operation of the microporous aerosolized sheet 12 and the driver 35. The controller 31 is used for controlling the working states of the microporous atomizing sheet 12 and the driving piece 35, namely, the controller 31 controls whether the battery 36 supplies power to the microporous atomizing sheet 12 and the driving piece 35. After the controller 31 controls the driving piece 35 to start, the driving piece 35 drives the push rod 34 to move towards the direction close to the containing seat 33, so that the predetermined amount of liquid medicine in the liquid storage assembly 2 is conveyed into the atomization bin 14 through the needle tube 13; after detecting that the medicine liquid to be atomized exists between the needle tube 13 in the atomization bin 14 and the microporous atomization sheet 1, the controller 31 controls the microporous atomization sheet 12 to perform atomization operation; after detecting that the medicine liquid between the needle tube 13 in the atomization bin 14 and the microporous atomization sheet 1 is completely atomized, the controller 31 controls the microporous atomization sheet 12 to stop working. Because the distance of each movement of the push rod 34 can be controlled, a predetermined amount of liquid medicine can be further controlled to be delivered into the atomization bin 14 for atomization, and thus, the precise control of the amount of atomized liquid can be realized.
Fig. 7 is a schematic structural diagram of a driving member in a first embodiment of a control assembly according to the present invention.
The driving member 35 includes a motor 351 and a screw 352 rotatably coupled to the motor 351. The motor 351 is fixed on the side wall of the control housing 32 through the supporting piece 354, and the screw rod 352 is arranged at one end of the motor 351 close to the push rod 34; that is, the motor 351 is disposed at a distance from the accommodating seat 33. The motor 351 is provided with a first contact 355 near one end of the push rod 34, and the first contact 355 is electrically connected with the controller 31. The material of the first contact 355 may be, but not limited to, metal, and is only required to be conductive. In this embodiment, the first contact 355 has a cylindrical shape. In other embodiments, the first contact 355 may be a sheet or other structure, as desired.
Wherein, the screw 352 is sleeved with an elastic piece 353. In this embodiment, the elastic member 353 is a spring. In other embodiments, the elastic member 353 may be another deformable member that can be restored, and may be capable of satisfying the need.
In other embodiments, the driving member 35 may include a motor 351 and a gear rotatably connected to the motor 351, and the corresponding push rod 34 is provided with teeth matching thereto, so that the driving member 35 drives the push rod 34 to move. The driving member 35 can drive the push rod 34 to move along the extending direction, and the specific structures of the driving member 35 and the push rod 34 can be designed according to the needs.
Referring to fig. 8, 9 and 10, fig. 8 is a schematic structural diagram of a push rod in a first embodiment of a control assembly provided by the present invention, fig. 9 is a schematic sectional diagram of the push rod in the first embodiment of the control assembly provided by the present invention, and fig. 10 is a schematic sectional diagram of another implementation of the push rod in the first embodiment of the control assembly provided by the present invention.
The end of the push rod 34 remote from the receiving seat 33 is provided with a thread. One end of the push rod 34 far away from the accommodating seat 33 is sleeved on the screw rod 352, namely, one end of the push rod 34 provided with threads is rotatably connected with the screw rod 352. The threads on the push rod 34 are provided in mating engagement with the threads of the screw 352. As the screw 352 rotates, the threads on the push rod 34 move up and down in the direction of the screw 352. When the push rod 34 is driven by the screw rod 352 to move towards the direction approaching the accommodating seat 33, the piston 24 in the liquid storage assembly 2 is pushed to move so as to extrude the liquid medicine. The stroke of the push rod 34 and the piston 24 is controlled by controlling the number of turns of the screw 352 for single rotation, and the purpose of accurate liquid feeding is finally achieved. In order to accurately control the liquid amount pumped by the liquid in the liquid storage component 2 through the needle tube 13, the precision of the screw thread on the screw rod 352 and the screw thread on the push rod 34 is set to be less than or equal to 5 levels, so that the precision of single rotation is improved, the moving distance of the push rod 34 is accurately controlled, and further the atomization dosage is accurately controlled. It will be appreciated that the choice of thread accuracy is also associated with the need for atomization accuracy, the higher the accuracy the higher the atomization accuracy, wherein the smaller the value the accuracy of the thread is set to the higher the accuracy.
In the present embodiment, as shown in fig. 9, the push rod 34 includes a push rod body 341 and a nut 342, and the nut 342 is disposed at an end of the push rod 34 away from the accommodating seat 33 and on an inner wall of the push rod body 341. In another embodiment, as shown in fig. 10, the push rod 34 includes a push rod body 341 and a thread disposed on an inner wall of the push rod body 341, and the thread is disposed at an end of the push rod body 341 away from the receiving seat 33.
A limiting groove 343 is arranged at one end of the push rod body 341 close to the driving piece 35, and the limiting groove 343 is arranged around threads on the push rod body 341. The limiting groove 343 is used for accommodating an elastic member 353 sleeved on the screw 352. When the push rod 34 is sleeved on the screw rod 352, one end of the elastic piece 353 is abutted with the bottom wall of the limit groove 343, and the other end is abutted with the motor 351; along with the rotation of the screw rod 352, the elastic element 353 is compressed, the elastic element 353 applies a force to the push rod 34 opposite to the movement direction of the elastic element 353, and a gap between the thread on the screw rod 352 and the thread on the push rod 34 is eliminated, so that the thread on the screw rod 352 is tightly matched with the thread on the push rod 34, and the accurate control of the movement distance of the push rod 34 is realized. In other embodiments, the elastic member 353 is fixedly connected to the motor 351, so as to achieve the purpose of eliminating the gap between the thread on the screw 352 and the thread on the push rod 34.
A second contact 344 is provided at an end of the push rod 34 adjacent to the driving member 35, the second contact 344 being electrically connected to the controller 31. The material of the second contact 344 may be, but not limited to, metal, and is only required to be conductive. In this embodiment, the second contact 344 is cylindrical. The height of the first contact 355 and the second contact 344 after abutting together with the depth of the limit groove 343 is the same as the height of the elastic member 353 after maximum compression. In other embodiments, the second contact 344 may be in a sheet-like or other configuration, which may be designed as desired.
When the screw rod 352 drives the push rod 34 to move away from the accommodating seat 33, that is, drives the push rod 34 to move toward the direction approaching the motor 351, after the first contact member 355 contacts with the second contact member 344, the controller 31 detects that the first contact member 355 is in conduction with the second contact member 344, and controls the motor 351 to stop rotating, so that the push rod 34 stops moving toward the direction approaching the motor 351, and limitation of the downward moving position of the push rod 34 is realized.
Referring to fig. 11, 12 and 13, fig. 11 is a schematic structural diagram of a second embodiment of a control assembly according to the present invention, fig. 12 is a schematic sectional view of the second embodiment of the control assembly according to the present invention, and fig. 13 is an exploded schematic view of the second embodiment of the control assembly according to the present invention.
In the second embodiment, the structure of the control assembly 3 is substantially the same as that in the first embodiment, except for the structure of the accommodating seat 33, the arrangement position of the elastic member 353, and the connection relationship of the accommodating seat 33 with the push rod 34 and the driving member 35.
In the present embodiment, the accommodating seat 33, the push rod 34 and the driving member 35 are an integral structure. One end of the accommodating seat 33 is fixed on the mounting cavity 321 and is communicated with the mounting cavity 321; the other end of the receiving seat 33 is fixed to the supporting member 354. The accommodating seat 33 accommodates part of the liquid storage component 2; the push rod 34 and the screw 352 of the driving member 35 are entirely disposed in the accommodation seat 33; the motor 351 is disposed on a side of the supporting member 354 away from the accommodating seat 33, and is fixedly connected with the accommodating seat 33 through the supporting member 354 and the motor 351. It will be appreciated that in order to increase the accuracy of the dose of the aerosol, it is desirable to increase the rigidity of the overall structure, i.e. the ability to be deformed, i.e. it is desirable that the position of the push rod 34 is not changed by other factors during rotation of the screw 352. The accommodating seat 33, the push rod 34 and the driving piece 35 are arranged into an integral structure, so that the thrust deviation of the motor 351 caused by slight deformation of the supporting piece 354 of the driving piece 35 along the moving direction of the push rod 34 in the process that the screw rod 352 drives the push rod 34 to move can be avoided; the accommodating seat 33 is fixedly connected with the supporting member 354, and the accommodating seat 33 is fixed on the control housing 32, so that the supporting member 354 can be prevented from deforming, and the atomization dosage accuracy can be improved.
The retainer 331 is disposed in the accommodating seat 33, and the retainer 331 is in an annular structure and is disposed on an inner wall of the accommodating seat 33. The limiting piece 331 is fixedly connected with the accommodating seat 33, and can be fixed together by means of glue, etc., preferably, the limiting piece 331 and the accommodating seat 33 are integrally formed. The limiting piece 331 is arranged at one end of the liquid storage component 2 close to the driving piece 35 and is abutted against the liquid storage component 2; that is, the limiting member 331 is disposed at an end of the push rod 34 near the liquid storage assembly 2. The limiting member 331 is used for preventing the push rod 34 from rotating along with the rotation of the screw 352, i.e. is used for limiting the shake of the push rod 34. The gap between the push rod 34 and the limiting piece 331 is controlled within 0.05mm, the push rod 34 is prevented from shaking to the greatest extent, the accurate control of the moving distance of the push rod 34 is realized, and further, the accurate control of the atomization dosage is realized.
The elastic member 353 is sleeved on the push rod 34, i.e. the push rod 34 is elastically connected with the accommodating seat 33. In this embodiment, the elastic member 353 is a spring, one end of the spring abuts against the limiting member 331, and the other end of the spring is fixed to a flange of the outer wall of the push rod 34 near one end of the motor 351. Along with the rotation of the screw rod 352, the push rod 34 moves towards the direction approaching to the piston 24, the elastic element 353 is compressed, the elastic element 353 applies a force opposite to the movement direction of the push rod 34, and the gap between the threads on the screw rod 352 and the threads on the push rod 34 is eliminated, so that the threads on the screw rod 352 are tightly matched with the threads on the push rod 34, the push rod 34 cannot shake, and the accurate control of the movement distance of the push rod 34 is realized. In other embodiments, the elastic member 353 may be other deformable and recoverable elements, as required.
The electronic atomization device comprises a microporous atomization sheet and a needle tube; one end of the needle tube is arranged at intervals with the microporous atomization sheet, and the other end of the needle tube is inserted into the liquid storage component; the needle tube is used for conveying liquid in the liquid storage component to the microporous atomization sheet to form liquid to be atomized, the microporous atomization sheet is used for atomizing the liquid to be atomized, and the liquid to be atomized is adsorbed between the microporous atomization sheet and the needle tube through surface tension. Through using the needle tubing to carry the liquid in the stock solution subassembly to the micropore atomizing piece on, realize the accurate control to atomizing dosage, can avoid the patient to inhale too much liquid medicine or inhale the dosage of liquid medicine inadequately for atomizing inhalation treatment reaches expected treatment.
In the above process, in order to achieve a good therapeutic effect, strict control of the atomized dosage is required, generally, microliters are taken as a measurement unit, and the accuracy of the atomized dosage is within ±5%, so that the accuracy control of the dosage of the atomized liquid is always a difficult problem in the industry.
To solve this problem, the present inventors have studied and found that, in an ideal case, the dose of the drug solution pushed out from the reservoir assembly 2 at each atomization is equal to the dose to be atomized between the microporous atomizer plate 12 and the needle tube 13. However, in actual use, the liquid medicine sprayed reversely by the microporous atomizing sheet 12 after each atomization is accumulated on the needle tube 13, or the interval time between the two atomization is too long, so that the liquid medicine in one end of the needle tube 13 close to the microporous atomizing sheet 12 is evaporated; the above reasons may cause the dose of the liquid medicine pushed out from the liquid storage assembly 2 to be unequal to the dose to be atomized between the microporous atomizing sheet 12 and the needle tube 13, and affect the atomization accuracy. Accordingly, in order to reduce the atomization deviation and improve the atomization accuracy, the present inventors made the following improvements.
Referring to fig. 14, a functional module structure of a first embodiment of the control module of the present invention is shown.
The control assembly 3 comprises a driving assembly 30 and a controller 31, the driving assembly 30 is connected with the controller 31, wherein the driving assembly 30 provides the liquid in the liquid storage assembly 2 for the atomizing assembly 1 to form liquid to be atomized, and the controller 31 controls the driving assembly 30 to work and detects whether the liquid to be atomized exists in the atomizing bin 14.
Specifically, referring to fig. 1 and 2, the atomizing assembly 1 includes a microporous atomizing sheet 12, and the atomizing assembly 1 and a portion of the liquid storage assembly 2 are accommodated in the mounting cavity 321, one end of the liquid storage assembly 2 provided with a sealing plug 23 faces the opening of the mounting cavity 321, the needle tube 13 in the atomizing assembly 1 is inserted into the liquid storage assembly 2, one end of the liquid storage assembly 2 provided with a piston 24 faces the bottom of the mounting cavity 321, and the component of the driving assembly 30 pushes the piston 24 to transfer the liquid in the liquid storage assembly 2 into the needle tube 13, and then reaches the microporous atomizing sheet 12.
Further, referring to fig. 2 again, the atomizing assembly 1 further includes an atomizing housing 10, an atomizing base 11 and a needle tube 13, the metal substrate in the microporous atomizing sheet 12 is electrically connected with the controller 31 through a conductive wire, the needle tube 13 is electrically connected with the controller 31 through a conductive member 132 and a conductive wire, the needle tube 13 and the metal substrate form an impedance sensor, that is, the needle tube 13 and the metal substrate in the microporous atomizing sheet 12 are equivalent to two metal electrodes, and the controller 31 determines whether the atomizing bin 14 is provided with the liquid to be atomized by detecting whether the liquid to be atomized is conducted between the needle tube 13 and the microporous atomizing sheet 12.
It will be understood that the metal substrate in the microporous atomizing sheet 12 is in a conductive state with the needle tube 13, the resistance between the metal substrate in the microporous atomizing sheet 12 and the needle tube 13 is about 0, the metal substrate in the microporous atomizing sheet 12 is in an open state with the needle tube 13, the resistance between the metal substrate in the microporous atomizing sheet 12 and the needle tube 13 is far greater than 0, and the controller 31 determines whether the atomizing bin 14 has liquid to be atomized or not through the resistance.
Ideally, when one atomization is completed, the liquid to be atomized between the microporous atomization sheet 12 and the needle tube 13 is completely atomized, and the liquid medicine in the needle tube 13 is flush with the end of the needle tube 13. In practice, referring to fig. 15, after one atomization is completed, the liquid to be atomized may accumulate at one end of the needle tube 13 near the microporous atomization sheet 12, thereby causing residue; alternatively, referring to fig. 16, when the interval between two atomization is long, a certain amount of vaporization of the liquid medicine in the needle tube 13 occurs. In the above case, the metal substrate in the microporous atomizing sheet 12 and the needle tube 13 are in an open state.
Referring to fig. 17, when the liquid to be atomized remains at the end of the needle tube 13 or the liquid in the needle tube 13 evaporates, that is, when the metal substrate in the microporous atomizing sheet 12 and the needle tube 13 are in an open state, the controller 31 receives a liquid supply signal, the controller 31 controls the driving assembly 30 to start the first-stage liquid supply, and the first-stage liquid supply continues until the controller 31 detects that the liquid to be atomized is conducted between the needle tube 13 and the microporous atomizing sheet 12; the controller 31 then controls the driving assembly 30 to start the second stage liquid supply, and during the second stage liquid supply, the controller 31 controls the driving assembly 30 to flow out a constant dose of the liquid to be atomized from the liquid storage assembly 2.
It will be understood that referring to fig. 2 again, the microporous atomizing sheet 12 is disposed at one end of the atomizing seat 11 and cooperates with the end of the atomizing seat 11 to form the atomizing bin 14, one end of the needle tube 13 is disposed in the atomizing bin 14 and is spaced from the microporous atomizing sheet 12, the spacing distance is fixed, and in a non-conductive state, the controller 31 firstly controls the driving assembly 30 to provide the liquid in the liquid storage assembly 2 to the atomizing bin 14 to form the liquid to be atomized, and the liquid to be atomized can be adsorbed between the microporous atomizing sheet 12 and the needle tube 13 through surface tension, so that the controller 31 detects that the microporous atomizing sheet 12 is conductive to the needle tube 13.
The first stage of liquid supply is completed, and at this time, a dose V1 to be atomized exists in the atomization bin 14, and the dose V1 to be atomized is smaller than 1 microliter; the controller 31 then controls the driving assembly 30 to perform the second-stage liquid supply, wherein the second-stage liquid supply is a constant dose, and the constant dose is a dose V2 to be atomized.
For further understanding of the first-stage liquid supply, the present application is characterized in that the liquid to be atomized remains and evaporates, and the dosage of the first-stage liquid supply is not a constant quantity, so that the quantity of the liquid medicine pushed out from the liquid storage assembly 2 is only required to realize that the needle tube 13 is communicated with the metal substrate of the microporous atomizing sheet 12. The design is that the surface tension of the same material is the same and is affected by the surface tension, no matter the atomizing sheet 12 is placed at any angle with the needle tube 13, the dosage of the liquid V1 to be atomized between the atomizing sheet 12 and the needle tube 13 is approximately equal, and the error precision is less than +/-5%. The liquid pumped from the liquid storage assembly 2 is adsorbed between the atomizing plate 12 and the needle tube 13, which is detected by the controller 31, and the liquid V1 to be atomized is already present on the atomizing plate 12.
Referring to fig. 18, a functional block diagram of a second embodiment of a control assembly according to the present invention is shown.
The control assembly comprises a driving assembly 30 and a controller 31, wherein the driving assembly 30 comprises a motor 351 and a push rod 34, the motor 351 is electrically connected with the controller 31, one end of the push rod 34 is connected with the motor 351 through a screw rod 352, and the other end of the push rod 34 is abutted with the liquid storage assembly 2.
The controller 31 includes a signal receiving unit, a detecting unit, an atomization control unit, and a liquid supply control unit; the signal receiving unit is used for receiving a liquid supply signal provided by a user; the detection unit detects whether the liquid to be atomized passes through between the needle tube 13 and the microporous atomization sheet 12 to be conducted; the atomization control unit controls the microporous atomization sheet 12 to start or stop the atomization operation; the liquid supply control unit controls the driving assembly 30 to push the piston.
Referring to fig. 6 and 7, in one embodiment, the driving assembly 30 includes a push rod 34 and a driving member 35, and the driving member 35 includes a motor 351 and a screw 352 rotatably connected to the motor 351.
When the device is used, after receiving a liquid supply signal provided by a user, the liquid supply control unit controls the motor 351 to rotate, the motor 351 drives the screw rod 352 to rotate, the screw rod 352 drives the push rod 34 to move towards the direction close to the liquid storage component 2, so that the piston 24 in the liquid storage component 2 moves towards the direction close to the atomizing component 1, liquid in the liquid storage component 2 is conveyed to the microporous atomizing sheet 12, and at the moment, the detection unit detects whether the liquid to be atomized exists in the atomizing bin 14 or not, namely, whether the needle tube 13 is communicated with the metal substrate of the microporous atomizing sheet 12 or not; and the detection unit detects that the atomization bin 14 contains liquid to be atomized, and the liquid supply control unit controls the motor 351 to continuously supply constant doses of the liquid to be atomized into the atomization bin 14.
In the present application, in order to precisely control the liquid supply amount, the stroke of the push rod 34 is divided into two stages, the first stage is: the controller 31 controls the stroke of the push rod 34 to be L1, so that the liquid storage assembly 2 provides the dose V1 to be atomized into the atomization bin 14; the second stage is as follows: the controller 31 controls the stroke of the push rod 34 to be L2, so that the liquid storage assembly 2 provides the dose V2 to be atomized into the atomization chamber 14, and l0=l1+l2 and v0=v1+v2 at this time, wherein the liquid supply amount V0 may be several microliters to several tens microliters, and the unit of the stroke L0 is in micrometers.
When the liquid is supplied in the first stage, if the liquid in the needle tube is in the first state, the push rod moves for a first stroke. The first state is a state in which the liquid on the needle tube is in a residual state, as shown in fig. 16, in which the liquid protrudes from the end of the needle tube. If the liquid in the needle tube is in the second state, the push rod moves for a second stroke. The second state is where the liquid in the syringe is in an evaporated state, as shown in fig. 15, where the liquid is below the tip of the syringe. If the liquid in the needle tube is in the third state, the push rod moves for a third stroke. The third state is an ideal state, that is, the third state, in which the liquid in the needle tube is approximately flush with the end of the needle tube, and there is no evaporation as shown in fig. 15 or residue as shown in fig. 16. Specifically, the second stroke is greater than the third stroke, which is greater than the first stroke and is L1.
It will be appreciated that the number of steps taken by the controller 31 in the motor 351 during the first phase of fluid delivery is not constant due to evaporation or residue of fluid within the syringe.
Specifically, when the liquid in the needle tube is in an evaporated state, the liquid supply amount in the first stage is V1, and the stroke of the push rod 34 is L3, wherein L3 is more than L1.
Specifically, when the liquid on the needle tube 13 is in the residual state, the liquid supply amount in the first stage is V1, but since there is a residual, the liquid supply amount in the first stage is V3, and only the liquid supply in the first stage is V4, v3+v4=v1, and the stroke of the plunger 34 is L4, L4 < L1 < L3.
Therefore, when the liquid is supplied in the first stage, the controller 31 firstly controls the motor 351 and the screw 352 to drive the push rod 34 to move until the detection unit detects the liquid to be atomized, so that the liquid dose V1 to be atomized exists in the atomization bin 14, and the error is reduced. The controller 31 clears the step count of the motor 351, and then resumes the step count, so that the driving push rod 34 completes the stroke of the second stage, namely, moves a constant stroke L2, supplies a constant dose of the liquid V2 to be atomized into the atomization bin 14, and ensures that v1+v2=v0 is constant, thereby realizing accurate control of the atomization dose.
Further, referring to fig. 17, in the liquid storage assembly 2, the liquid is delivered to the microporous atomizing sheet 12, the metal substrate in the microporous atomizing sheet 12 is conducted with the needle tube 13, the resistance between the metal substrate in the microporous atomizing sheet 12 and the needle tube 13 is about 0, the detection unit detects that the atomizing bin 14 is provided with the liquid to be atomized, the atomizing control unit controls the microporous atomizing sheet 12 to start atomizing operation, at the same time, the liquid supply control unit controls the motor 351, the screw 352 and the push rod 34 to continuously supply the liquid to be atomized into the atomizing bin 14, and the detection unit continuously detects the state between the needle tube 13 and the microporous atomizing sheet 12.
Still further, referring to fig. 15 and 16, the liquid in the liquid storage assembly 2 is not delivered to the microporous atomizing sheet 12, that is, the metal substrate in the microporous atomizing sheet 12 and the needle tube 13 are in an open state, the resistance between the metal substrate in the microporous atomizing sheet 12 and the needle tube 13 is far greater than 0, the detection unit detects that the liquid to be atomized exists in the atomizing bin 14, the liquid supply control unit controls the motor 351, the screw 352 and the push rod 34 to continuously supply the liquid to be atomized into the atomizing bin 14 until the detection unit detects the liquid to be atomized, the atomizing control unit controls the microporous atomizing sheet 12 to start the atomizing operation, and at the same time, the liquid supply control unit controls the driving assembly 30 to continuously supply the quantitative liquid to be atomized into the atomizing bin 14, and the detection unit continuously detects the state between the needle tube 13 and the microporous atomizing sheet 12.
The foregoing description is only a partial embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent devices or equivalent processes using the descriptions and the drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.

Claims (12)

1. A control assembly for an electronic atomizing device, comprising:
A drive assembly for providing the liquid in the liquid storage assembly to the atomizing assembly to form a liquid to be atomized;
the controller is used for controlling the driving assembly to work and detecting whether the atomizing assembly is provided with the liquid to be atomized or not;
wherein, in response to the controller receiving a liquid supply signal, the controller controls the driving assembly to supply liquid in a first stage, and the liquid supply in the first stage is continued until the controller detects that the atomizing assembly has the liquid to be atomized; and responding to the controller to detect that the atomization assembly has the liquid to be atomized, the controller controls the driving assembly to perform second-stage liquid supply, and in the second-stage liquid supply process, the controller controls the driving assembly to flow out constant dosage of the liquid to be atomized from the liquid storage assembly.
2. The control assembly of claim 1, wherein the atomizing assembly comprises a needle tube and a microporous atomizing sheet, the controller is electrically connected with the needle tube and the microporous atomizing sheet respectively, and the controller judges whether the atomizing assembly has the liquid to be atomized by detecting whether the liquid to be atomized is conducted between the needle tube and the microporous atomizing sheet.
3. The control assembly of claim 2, wherein in response to the controller receiving a liquid supply signal, the controller controls the drive assembly to perform a first stage liquid supply that continues until the controller detects that the needle cannula is in communication with the microporous atomizing sheet; and responding to the controller to detect the conduction between the needle tube and the microporous atomizing sheet, the controller controls the driving assembly to perform second-stage liquid supply, and in the second-stage liquid supply process, the controller controls the driving assembly to flow out constant dosage of the liquid to be atomized from the liquid storage assembly.
4. A control assembly according to claim 3, wherein when the controller controls the drive assembly for the first stage of liquid supply, the liquid to be atomized is adsorbed between the microporous atomizing sheet and the needle tube by surface tension so that the controller detects that the microporous atomizing sheet is in communication with the needle tube.
5. The control assembly of claim 4 wherein the first stage has a liquid supply of less than 1 microliter.
6. A control assembly as claimed in claim 3, wherein the drive assembly comprises:
The motor is connected with the controller;
and one end of the push rod is connected with the motor, and the other end of the push rod is in butt joint with the liquid storage component and is used for pushing liquid in the liquid storage component into the needle tube under the drive of the motor and guiding the liquid into the space between the needle tube and the microporous atomization sheet through the needle tube.
7. The control assembly of claim 6, wherein in response to the controller receiving a liquid supply signal, the controller controls the motor to drive the push rod to move until the controller detects that the needle cannula is in communication with the microporous atomizing sheet; and in response to the controller detecting that the needle tube is communicated with the microporous atomizing sheet, the controller controls the motor to count steps and reset the steps and then count constant steps again, so that the push rod is driven to move for a constant stroke.
8. The control assembly of claim 7 wherein the control assembly comprises a control valve,
when liquid is supplied in the first stage, if the liquid in the needle tube is in a first state, the push rod moves for a first stroke;
if the liquid in the needle tube is in a second state, the push rod moves for a second stroke;
if the liquid in the needle tube is in a third state, the push rod moves for a third stroke;
The second stroke is greater than the third stroke, which is greater than the first stroke.
9. The control assembly of claim 7, wherein the controller further controls the microporous atomizing sheet to perform an atomizing operation in response to the controller detecting communication between the needle cannula and the microporous atomizing sheet.
10. The control assembly of claim 7, wherein the controller controls the microporous atomizing sheet to cease atomizing operation in response to the controller detecting a disconnection between the needle cannula and the microporous atomizing sheet.
11. An electronic atomizing device, comprising:
an atomizing assembly;
a control assembly for providing liquid in a liquid storage assembly to the atomizing assembly, the control assembly being as claimed in any one of claims 1 to 10.
12. The electronic atomizing device of claim 11, wherein the atomizing assembly comprises:
microporous atomizing sheet;
one end of the needle tube is arranged at intervals with the microporous atomization sheet, and the other end of the needle tube is communicated with the liquid;
the control assembly is used for conveying the liquid in the liquid storage assembly to the microporous atomizing sheet through the needle tube so as to form the liquid to be atomized.
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