A hand-held intermittent misting mesh atomizer and control method thereof

Abstract

The application relates to the technical field of atomizers, in particular to a handheld intermittent mist net atomizer and a control method thereof. The handheld intermittent mist net atomizer comprises a main machine, a liquid medicine bin and a spraying interface; the liquid medicine bin and the spraying interface are detachably connected; a main PCB is arranged in the main machine; the main PCB and the spraying interface are electrically connected; the liquid medicine bin is provided with a liquid medicine cup and a liquid medicine bottle, and the liquid medicine cup and the liquid medicine bottle are detachably connected; the spraying interface comprises a mesh bag, a mist outlet head and an airflow chip bag; a mesh is arranged in the mesh bag; the mesh bag, the mesh and the inner wall of the liquid medicine cup jointly form an inner cavity for containing atomized liquid medicine; the mist outlet head is internally provided with an atomization channel and a breathing channel; a hot airflow chip is arranged in the airflow chip bag, and the airflow chip bag is arranged in the breathing channel; the outer edge of the mist outlet head is matched with a mask or a mouthpiece for atomization treatment. The application adopts a method of detecting thermal field symmetry to judge the breathing and inhaling rhythm, the intelligent degree and the detection sensitivity are higher, and liquid medicine waste is reduced.

Description

Technical Field

[0001] This application relates to the field of atomizer technology, and in particular to a handheld intermittent mist-emitting mesh atomizer and its control method. Background Technology

[0002] The use of mesh nebulizers is a common treatment method in respiratory therapy. In related technologies, their working mode is mostly continuous nebulization, which will result in waste of medication.

[0003] Related technologies have also proposed a breathing-sensor-controlled nebulizer solution, the core of which is to control the nebulizer's on / off state by using the internal and external pressure difference generated by the patient's breathing. However, its built-in micro differential pressure sensor is too large to meet the needs of handheld and portable use.

[0004] For example, Chinese patent CN106377823B describes a nebulizer delivery nozzle and an intelligent self-adjusting nebulizer delivery device and method of use. It utilizes a first sensor and a second sensor to detect the opening angle of the exhalation and inhalation detection valves to determine whether the current process is exhalation or inhalation, and controls the nebulizer to open or close based on the determined exhalation or inhalation process. Both the exhalation and inhalation detection valves are one-way valves. Therefore, the overall process is as follows: the one-way valves respond to the breathing state with mechanical action—the first / second sensor detects the opening degree of the one-way valves—logic judgment determines the exhalation / inhalation state based on the data detected by the first / second sensor—controlling the nebulizer to open or close based on the exhalation or inhalation state.

[0005] Based on the description of existing technology, it is indeed possible to control the operation of the nebulizer according to the exhalation or inhalation state. However, the problem is that the single process of exhalation and inhalation needs to be short. At the same time, the mechanical one-way valve driven by the air pressure of inhalation or exhalation will consume the air volume passed in a single process. By the time the sensor detects exhalation or inhalation, the user's inhalation or exhalation process has already passed the halfway mark. At this point, controlling the nebulizer to open or close has lost its effect of reducing medication waste. Furthermore, placing the mechanical one-way valve in the inhalation / exhalation channel restricts the structure of the inhalation / exhalation channel. To ensure timely response during inhalation and exhalation, the structure of the inhalation / exhalation channel cannot be altered. Without changing the structure, it becomes impossible to maximize the inhalation of medication during inhalation and minimize medication consumption during exhalation. A large amount of nebulized medication remaining in the nozzle cavity at the end of inhalation is completely expelled during exhalation. Replenishing the nebulized medication in the nozzle cavity during exhalation results in wasting all the nebulized medication that the nozzle cavity can store in a single breath, leading to medication waste. Summary of the Invention

[0006] To overcome the above-mentioned defects, this application provides a handheld intermittent misting mesh nebulizer and its control method, which uses the detection of thermal field symmetry to determine the exhalation and inhalation rhythm, thereby reducing medication waste.

[0007] In a first aspect, this application provides a handheld intermittent mist-emitting mesh atomizer, including a main unit, a medicine tank, and a spray interface; the medicine tank and the spray interface are detachably connected. The main unit contains a main PCB board; the main PCB board and the spray interface are electrically connected. The medicine container is equipped with a medicine cup and a medicine bottle, which can be detachably connected; The spray interface includes a mesh pack, a mist outlet, and an airflow chip pack. The mesh pack contains a mesh sheet, and the mesh pack, mesh sheet, and inner wall of the medication cup together form an inner cavity for containing the atomized medication. The mist outlet has an atomization channel and a breathing channel. A thermal airflow chip is disposed inside the airflow chip pack, which is also disposed inside the breathing channel. The side of the mist outlet has a vent communicating with the atomization channel and a breathing detection port communicating with the breathing channel. The atomization channel has an air guiding structure that mates with the vent. The air guiding structure includes a hemispherical diffusion surface that diffuses from the mesh pack, and the vent is perpendicular to the axial direction of the mist outlet and communicates with the hemispherical diffusion surface. The outer edge of the mist outlet is fitted with a face mask or mouthpiece for nebulization therapy. A thermal airflow chip is used to detect the direction of airflow generated by the patient's breathing in real time, and the mesh is vibrated according to the direction of airflow to atomize the medicine in the medicine cup.

[0008] The main unit includes a main PCB board; the liquid tank includes a liquid bottle, a spin-on stage, a soft adhesive, and a liquid cup; the spray interface includes a spin-on plate, a mist outlet, a mesh, a hot airflow chip, a mesh pack, an airflow chip pack, and an auxiliary PCB board.

[0009] Furthermore, the thermal airflow chip includes a micro heat source located on a sensitive thin film, an upstream temperature sensor and a downstream temperature sensor symmetrically arranged about the micro heat source, and an ambient temperature sensor located on a silicon substrate.

[0010] Furthermore, the spray interface is also equipped with an auxiliary PCB board; the main PCB board is equipped with multiple copper pillars, and the auxiliary PCB board has multiple first spring pins at corresponding positions, with the copper pillars abutting against the first spring pins; the auxiliary PCB board is connected to the mesh and the hot airflow chip by wire bonding.

[0011] Furthermore, the main unit contains a battery, and the main PCB board is electrically connected to the battery; the main unit also has a charging interface for charging the battery.

[0012] Furthermore, the medicine container also includes a soft rubber; the top of the medicine cup has an installation hole, the soft rubber is fixed in the installation hole, and the soft rubber has a through hole inside for inserting the medicine bottle.

[0013] Furthermore, a sliding groove is provided on the top of the main unit, and a sliding platform is provided in the liquid medicine tank, with the sliding platform and the sliding groove being slidably connected; a boss is provided at the bottom of the liquid medicine tank, and an elastic buckle is provided on the top of the main unit, with the elastic buckle and the boss engaging.

[0014] Furthermore, the medicine cup also includes a column, which corresponds to the opening stopper of the medicine bottle and is connected to the bottom wall of the medicine cup. A temperature sensing probe is installed inside the medicine cup, and the temperature sensing probe abuts against the second spring pin on the main PCB board.

[0015] Furthermore, the handheld intermittent mist-emitting mesh atomizer is also equipped with a top cover; the inner wall of the top cover is provided with a slot that corresponds to the top edge of the medicine cup.

[0016] Furthermore, the air guiding structure also includes an air guiding baffle, which is disposed at the end of the air vent facing the hemispherical diffusion surface, and forms a narrowing channel from the air vent to the mesh; an air deflection hole is provided between the air guiding baffle and the outer wall of the mist outlet, the air deflection hole is connected to the air vent and is arranged along the air outlet direction of the mist outlet.

[0017] Secondly, this application also provides a control method for a handheld intermittent mist-emitting mesh atomizer, including the aforementioned handheld intermittent mist-emitting mesh atomizer, controlling the micro heat source to heat, and acquiring the upstream temperature value collected by the upstream temperature sensor and the downstream temperature value collected by the downstream temperature sensor. When the downstream temperature value is higher than the upstream temperature value, and the difference between the two reaches a preset air intake threshold, it is determined to be an air intake flow, which drives the mesh to start oscillating atomization. When the downstream temperature value is lower than or equal to the upstream temperature value, or when the difference between the two does not reach the preset intake threshold, the atomization of the mesh is stopped.

[0018] This application has the following beneficial effects: 1. This application relates to a handheld intermittent misting mesh nebulizer, which integrates a thermal airflow chip within the spray interface. This enables an intermittent misting mode where misting occurs during inhalation and stops during exhalation. It offers higher intelligence, detection sensitivity, and control precision. Furthermore, it effectively avoids unnecessary medication waste during nebulization and is compact and easy to carry in daily life.

[0019] 2. A medicine bottle can be fixedly connected inside the medicine container. Before nebulization begins, the medicine is stored in the medicine bottle. The medicine bottle can be inverted and inserted downwards into the medicine cup. The column will pierce the medicine bottle stopper, and the medicine will flow along the column into the medicine cup. There is no need to manually open the medicine bottle stopper and pour out the medicine, which can effectively avoid contamination of the medicine by human hands during the dosing process.

[0020] 3. The medicine bottle and the soft rubber are highly compatible, keeping the neck size of the medicine bottle unchanged while changing the body size to adjust the capacity of the medicine bottle. Multiple sizes of medicine bottles can be replaced without changing the soft rubber, making it highly versatile and practical.

[0021] 4. During the inhalation process, the air entering through the vent is blown towards the outlet of the mesh pack through the constricted channel, thereby quickly blowing the atomized medicine generated by the mesh pack away from the mesh pack through the hemispherical diffuser surface. This, together with the air entering through the deflector, carries the atomized medicine to the user, improving the efficiency of delivering the atomized medicine to the human body after it is generated, reducing the amount of medicine remaining in the mist outlet, and thus reducing medicine waste. Attached Figure Description

[0022] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application; Figure 2 This is an exploded view of the overall structure of Embodiment 1 of this application; Figure 3 This is a schematic cross-sectional view of the overall structure of Embodiment 1 of this application; Figure 4 This is a schematic diagram of the screw-on stage, soft rubber, and vent structure of the liquid cup in Embodiment 1 of this application; Figure 5 This is a schematic diagram of the thermal airflow chip structure without airflow in Embodiment 1 of this application; Figure 6 This is a schematic diagram of the forward (inhalation direction) airflow of the thermal airflow chip structure in Embodiment 1 of this application; Figure 7 This is a three-dimensional cross-sectional view of the overall structure of Embodiment 1 of this application; Figure 8 This is an enlarged cross-sectional view of the main unit, the liquid tank, and the spray interface connection portion in Embodiment 1 of this application; Figure 9 This is a schematic diagram of the Type-C charging interface structure according to Embodiment 1 of this application; Figure 10 This is a schematic diagram of the structure of the temperature sensing probe 25 according to Embodiment 2 of this application; Figure 11 This is a schematic diagram of a side view of an embodiment of this application; Figure 12 This application Figure 11 Sectional view of AA; Figure 13 This is a schematic diagram of the exploded structure of the spin-on plate and the mist outlet in Embodiment 1 of this application; Figure 14 This is a schematic diagram from another angle of the exploded structure of the spin-on plate and the mist outlet in Embodiment 1 of this application.

[0023] Attached reference numerals: 1. Main unit; 2. Liquid tank; 3. Spray interface; 4. Top cover; 11. Main PCB board; 12. Battery; 13. Type-C charging interface; 21. Liquid cup; 22. Liquid bottle; 23. Spin-on stage; 24. Soft rubber; 25. Temperature probe; 31. Mesh; 32. Mesh pack; 33. Auxiliary PCB board; 34. Thermal airflow chip; 35. Spin-on plate; 36. Mist nozzle; 37. Airflow chip pack; 101. Slide; 102. Elastic buckle; 103. Push button; 104. Copper pillar; 105. Switch; 106. Second spring; 107. Limiting slope; 201. Slide table; 202. Boss; 203. Column; 204. Vent hole; 301. First spring needle; 302. Atomization channel; 303. Breathing channel; 304. Vent hole; 305. Breathing monitoring hole; 306. Hemispherical diffuser; 307. Air guide baffle; 308. Deflecting vent; 341. Micro heat source; 342. Upstream temperature sensor; 343. Downstream temperature sensor; 344. Ambient temperature sensor; 345. Temperature field. Detailed Implementation

[0024] The specific embodiments of this application are described below with reference to the accompanying drawings and examples. Through the content described in this specification, those skilled in the art can clearly and completely understand the technical solution, the technical problem solved, and the resulting technical effects of this application. It is understood that the specific embodiments described herein are only for explaining this application and not for limiting it. Furthermore, for ease of description, only the parts related to this application are shown in the accompanying drawings.

[0025] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the contents described in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size should fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0026] The use of terms such as "first," "second," and "the" does not imply quantity limitation and may indicate singular or plural. The terms "comprising," "including," "having," and any variations thereof used in this application are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or modules is not limited to the listed steps or units, but may also include steps or units not listed, or other steps or units inherent to such processes, methods, products, or devices. The terms "connected," "linked," and "coupled" used in this application are not limited to physical or mechanical connections, but may also include direct or indirect electrical connections.

[0027] It should also be noted that the longitudinal section corresponding to the embodiment of this application can be the section corresponding to the front view direction, the transverse section can be the section corresponding to the right view direction, and the horizontal section can be the section corresponding to the top view direction.

[0028] Furthermore, where there is no conflict, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] Example 1 refer to Figure 1 — Figure 9 A handheld intermittent mist-emitting mesh atomizer includes a main unit 1, a liquid tank 2, and a spray interface 3; the liquid tank 2 and the main unit 1 are detachably connected; the liquid tank 2 and the spray interface 3 are detachably connected. The main unit 1 contains a main PCB board 11; the main PCB board 11 is electrically connected to the spray interface 3; The medicine container 2 is equipped with a medicine cup 21 and a medicine bottle 22, which are detachably connected; The spray interface 3 includes a mesh pack 32, a mist outlet 36, and an airflow chip pack 37; the mesh pack 32 contains a mesh 31, and the mesh pack 32, the mesh 31, and the inner wall of the medicine cup 21 together form an inner cavity for containing the nebulized medicine; the mist outlet 36 contains a nebulization channel 302 and a breathing channel 303; a heated airflow chip 34 is disposed inside the airflow chip pack 37, and the airflow chip pack 37 is disposed inside the breathing channel 303; the outer edge of the mist outlet 36 is fitted with a face mask or mouthpiece for nebulization therapy; The direction of airflow generated by the patient's breathing is detected in real time using a thermal airflow chip 34, and the mesh 31 is vibrated according to the airflow direction to atomize the medicine in the medicine cup 21.

[0030] Specifically, the main unit 1 has a main PCB board 11 and a battery 12 fixedly connected inside, and the top of the main PCB board 11 has several copper pillars 104. The main unit 1 has a power button 105 on the front and a push button 103 on the back. The main unit 1 also has a charging interface for charging the battery. Preferably, the charging interface is a Type-C charging interface 13.

[0031] Reference Figure 2 , Figure 3 and Figure 8 The liquid medicine tank 2 can be slidably connected to the slide groove 101 of the main unit 1 via the slide table 201. The liquid medicine tank 2 can be engaged with the spring buckle 102 of the main unit 1 via the boss 202. After pressing the push button 103 on the main unit 1, the spring buckle 102 retracts, and the liquid medicine tank 2 can be slid off the main unit 1. Specifically, the push button 103 has a first spring and a protrusion on its back. The spring buckle 102 has a limiting slope 107 below it, and a second spring 106 is provided at the bottom of the limiting slope 107. When the push button 103 on the main unit 1 is pressed, the first spring retracts, and the protrusion abuts against the limiting slope 107, causing the limiting slope 107 to move the spring buckle 102 downward. The spring buckle 102 no longer limits the boss 202, and the liquid medicine tank 2 can be slid off the main unit 1 along the slide groove 101.

[0032] The medicine container 2 also includes a soft rubber 24. The top of the medicine cup 21 has an installation hole, into which the soft rubber 24 is inserted. The soft rubber 24 has a through hole inside for inserting a medicine bottle 22. The size of the through hole is set according to common specifications. The medicine bottle 22 can keep the size of its neck unchanged and adjust its capacity by changing the size of the bottle body. The soft rubber 24 can be adapted to medicine bottles 22 of different capacities without the need to replace the soft rubber 24 or the medicine cup 21, making it highly versatile and practical.

[0033] Preferably, the top of the liquid container 2 is provided with a mounting platform 23, which can rotate and engage with the mounting hole on the top of the liquid cup 21. The inner wall of the mounting platform 23 has a locking protrusion, and the edge of the soft rubber 24 has a locking groove. The soft rubber 24 is embedded in the interior of the mounting platform 23, which can prevent the soft rubber 24 from rotating axially. The soft rubber 24 is abutted by the liquid cup 21 and the mounting platform 23 at the top and bottom, respectively, which can not only reliably fix the liquid bottle 22 inside, but also facilitate the disassembly, assembly, cleaning and maintenance of the various parts of the liquid container 2. The inner wall of the soft rubber 24 has a vent hole 204 to maintain the stability of the air pressure inside and outside the liquid chamber to avoid affecting the flow of the liquid from the liquid bottle 22. The liquid cup 21 includes a column 203, which is connected to the bottom wall of the liquid cup 21.

[0034] The upper cover 4 is snapped onto the medicine cup 21. The inner wall of the upper cover 4 is provided with a slot for the top edge of the medicine cup 21 to be snapped into, which facilitates the mutual disassembly and assembly of the two. The upper cover 4 also protects the medicine bottle 22, the spin-on stage 23 and other components in the medicine chamber 2.

[0035] The spray interface 3 includes a screw-on plate 35 and a mist outlet 36, which are connected as a whole by self-tapping screws to form the main body of the spray interface 3. The spray interface 3 can rotate and be snapped into the round hole at the front end of the liquid tank 2. For example, the outer wall of the cylindrical screw-on plate 35 and the inner wall of the round hole at the front end of the liquid tank 2 are snapped together, which facilitates the mutual disassembly, assembly, cleaning and maintenance of the two.

[0036] The spray port 3, facing the front circular hole of the liquid tank 2, is equipped with a mesh 31 and a mesh sleeve 32. The mesh sleeve 32 is nested within the central hole of the spin-on plate 35, and it abuts against the liquid cup 21 to ensure a leak-proof seal at the joint. The mesh sleeve 32 is a waterproof flexible component, and its edge fits into the inner wall of the liquid cup 21. The mesh 31 is wrapped inside the mesh sleeve 32. The mesh sleeve 32, the mesh 31, and the liquid cup 21 in the liquid tank 2 together form an inner cavity for containing the atomized liquid. The liquid in the liquid tank 2 can flow into the inner cavity of the mesh 31, allowing for liquid-liquid communication. The vibration of the mesh 31 atomizes the liquid into mist. Furthermore, the mesh sleeve 32 wraps around the mesh 31 and is embedded in the spin-on plate 35, ensuring a completely sealed joint and preventing liquid leakage from the spray port.

[0037] An auxiliary PCB board 33 is also fixedly connected inside the spray interface 3. The auxiliary PCB board 33 is located between the spin-on plate 35 and the mist outlet 36. Several first spring pins 301 are provided on the side of the auxiliary PCB board 33. Specifically, the several first spring pins 301 are positioned in the circular holes below the spin-on plate 35. The copper pillar 104 abuts against the first spring pins 301. The auxiliary PCB board 33 is wire-bonded to the mesh 31 and the hot airflow chip 34, thereby supplying power to the mesh 31 and the hot airflow chip 34.

[0038] Reference Figures 11-14 The nebulizer head 36 has a nebulization channel 302 and a breathing channel 303, which are isolated from each other. The outer edge of the nebulizer head 36 can be fitted with a mask or mouthpiece for nebulization therapy. The side wall of the nebulizer head 36 has two ventilation holes 304 for patient ventilation after wearing a mask or mouthpiece. The side of the nebulizer head 36 is provided with a ventilation hole 304 communicating with the nebulization channel 302 and a breathing detection hole 305 communicating with the breathing channel 303. The nebulization channel 302 is provided with an air guiding structure that cooperates with the ventilation hole 304. The air guiding structure includes a hemispherical diffusion surface 306 that diffuses from the position of the mesh pack 32. The ventilation hole 304 is perpendicular to the axial direction of the nebulizer head 36 and communicates with the hemispherical diffusion surface 306. The hemispherical diffusion surface 306 is located inside the nebulizer head 36.

[0039] The air guiding structure also includes an air guiding baffle 307, which is disposed at the end of the vent 304 facing the hemispherical diffusion surface 306, and forms a narrowing channel from the vent 304 to the mesh package 32; an air deflection hole 308 is provided between the air guiding baffle 307 and the outer wall of the mist outlet 36, the air deflection hole 308 is connected to the vent 304 and is arranged along the air outlet direction of the mist outlet 36.

[0040] During the inhalation process, the air entering through the vent 304 is blown towards the outlet of the mesh pack 32 through the constricted channel, thereby quickly blowing the atomized medicine generated by the mesh 31 away from the mesh pack 32 through the hemispherical diffuser surface 306. This, together with the air entering through the deflector vent 308, carries the atomized medicine to the user, improving the efficiency of delivering the atomized medicine to the human body after it is generated, reducing the amount of medicine remaining in the mist outlet 36, and thus reducing medicine waste.

[0041] The heated airflow chip 34 is enclosed within the airflow chip package 37, and both are located within the breathing channel 303. (See reference) Figure 5 The thermal airflow chip 34 consists of a micro heat source 341 located on a sensitive thin film, an upstream temperature sensor 342 and a downstream temperature sensor 343 symmetrically arranged about the micro heat source, and an ambient temperature sensor 344 located on a silicon substrate. When there is no airflow on the chip surface, the temperature field 345 around the micro heat source is symmetrically distributed. The ambient temperature sensor 344 is used to detect the ambient temperature. Regardless of the ambient temperature, the temperature of the micro heat source 341 is kept constant above the ambient temperature to ensure that the cold airflow always passes through the hot temperature field 345.

[0042] Reference Figure 6 When there is a forward (inhalation direction) gas flow on the chip surface, the gas has a cooling effect on the micro heat source, which will take away some heat from the micro heat source, thereby causing the 345 symmetry of the temperature field around the micro heat source to be destroyed. This principle can be used to identify the direction of gas flow, and thus realize the atomization to start when inhaling and stop when exhaling.

[0043] The working principle of this application embodiment: Before starting nebulization therapy, first snap the clean medication container 2 (excluding the medication bottle 22) into place with the spray interface 3, then install it onto the main unit 1. Remove the medication bottle 22, which can be inverted and inserted downwards into the medication cup 21. The column 203 will puncture the medication bottle stopper, and the medication will flow along the column 203 into the medication cup 21. Then, replace the top cover 4, attach the nebulizer mask or mouthpiece, and place it on the patient's face. Hold the nebulizer and press and hold the power button for 3 seconds to start nebulization. This is the continuous mist output mode. Press the power button again briefly to switch to the intermittent mist output mode. In this mode, the device can recognize the patient's breathing rhythm, starting nebulization during inhalation and stopping during exhalation. In continuous mist output mode, regardless of breathing movements, the mesh 31 will vibrate continuously, causing the medication to be continuously atomized until the user manually turns it off or the set working time ends.

[0044] The handheld intermittent misting mesh nebulizer integrates a thermal airflow chip 34 within its spray interface 3, enabling intermittent misting during inhalation and stopping during exhalation. This effectively avoids unnecessary medication waste during nebulization and is compact, making it easy to carry in daily life. A medication bottle 22 can be fixedly connected to the medication compartment 2. Before nebulization begins, the medication is stored in the medication bottle 22. The medication bottle 22 can be inverted and inserted downwards into the medication cup 21. The column 203 punctures the stopper of the medication bottle 22, allowing the medication to flow along the column 203 into the medication cup 21. This eliminates the need for manual opening of the medication bottle 22 and emptying the medication, effectively preventing contamination of the medication by hand during dispensing. The medication bottle 22 and the soft rubber 24 have a high compatibility, maintaining the same neck size while adjusting the bottle body size to control the capacity. Multiple sizes of medication bottles 22 can be replaced without changing the soft rubber 24, offering high versatility and practicality.

[0045] The method of using the handheld intermittent mist-emitting mesh atomizer of this application includes the following steps: S1. Assembly: Insert the medicine bottle 22 containing the medicine into the medicine cup 21, and the medicine flows into the medicine cup 21; assemble the mask or mouthpiece into the mist outlet 36; S2. Power-on mode switching: Select continuous fog output mode or intermittent fog output mode; S3. Breathing mist control: When the user wears a mask / mouthpiece to breathe, when the intermittent mist output mode is selected, the thermal airflow chip 34 is used to detect the direction of the airflow generated by the patient's breathing in real time. When the thermal airflow chip 34 detects airflow in the inhalation direction, it controls the mesh 31 to vibrate to atomize the medicine in the medicine cup 21; when it detects airflow in the exhalation direction, it controls the mesh 31 to stop vibrating.

[0046] This application also provides a control method for a handheld intermittent mist-emitting mesh atomizer, wherein the main PCB board 11 is electrically connected to the auxiliary PCB board 33, controls the micro heat source 341 to heat, and obtains the upstream temperature value collected by the upstream temperature sensor 342 and the downstream temperature value collected by the downstream temperature sensor 343. When the downstream temperature value is higher than the upstream temperature value, and the difference between the two reaches a preset air intake threshold, it is determined to be an air intake flow, driving the mesh 31 to start oscillating atomization; When the downstream temperature value is lower than or equal to the upstream temperature value, or the difference between the two does not reach the preset intake threshold, the atomization of the mesh 31 is stopped.

[0047] During inhalation, external air enters the breathing channel 303 through the mist outlet 36 and passes forward over the thermal airflow chip 34. The airflow breaks the symmetrical state of the temperature field around the micro heat source 341. The thermal airflow chip 34 recognizes the inhalation signal and drives the mesh 31 to oscillate and atomize. The liquid medicine is output as mist through the atomization channel 302. During exhalation, the airflow flows in the opposite direction through the breathing channel 303. The thermal airflow chip 34 detects no forward inhalation airflow, and the device immediately shuts down the atomization.

[0048] Example 2 Reference Figure 10 The difference between this embodiment and Embodiment 1 is that the inner cavity of the medicine cup 21 in this embodiment uses a heat-insulating material. When nebulizing a biologically active agent (such as exosomes) that requires cold chain storage, this material can effectively delay the loss of biological activity caused by the rise in the temperature of the medicine. A temperature-sensing probe 25 is embedded in the bottom wall of the medicine cup 21. The temperature-sensing probe 25 abuts against the second spring pin on the main PCB board 11, which can detect the temperature of the medicine in real time. If the temperature exceeds the range, the biological activity of the medicine is lost, and the indicator light on the main unit 1 will flash to remind the patient to stop nebulization and replace the medicine.

[0049] This application uses the detection of thermal field symmetry to determine the rhythm of exhalation and inhalation, which has a higher degree of intelligence and detection sensitivity, and reduces drug waste.

[0050] Although this application has been described and illustrated with reference to specific embodiments thereof, such description and illustration are not limiting of this application. It will be readily understood by those skilled in the art that various changes can be made and equivalent elements can be substituted within embodiments without departing from the true spirit and scope of this application as defined by the appended claims. Illustrations may not be drawn to scale. Differences may exist between the technical representation in this application and actual implementation due to variables in the manufacturing process, etc. Other embodiments of this application may exist that are not specifically described. The description and illustrations should be considered illustrative rather than restrictive. Modifications can be made to adapt particular circumstances, materials, composition, methods, or processes to the objectives, spirit, and scope of this application. All such modifications fall within the scope of the appended claims. While the methods disclosed herein have been described with reference to specific operations performed in a particular order, it should be understood that these operations can be combined, subdivided, or reordered to form equivalent methods without departing from the teachings of this application. Therefore, unless specifically indicated herein, the order and grouping of operations do not limit this application.

Claims

1. A handheld intermittent mist-emitting mesh atomizer, characterized in that, Includes a main unit (1), a liquid tank (2), and a spray interface (3); the liquid tank (2) and the spray interface (3) are detachably connected; The main unit (1) is equipped with a main PCB board (11); the main PCB board (11) and the spray interface (3) are electrically connected; The medicine container (2) is equipped with a medicine cup (21) and a medicine bottle (22), which are detachably connected; The spray interface (3) includes a mesh pack (32), a mist outlet (36), and an airflow chip pack (37); a mesh (31) is provided inside the mesh pack (32), and the mesh pack (32), the mesh (31), and the inner wall of the liquid cup (21) together form an inner cavity for containing atomized liquid; the mist outlet (36) is provided with an atomization channel (302) and a breathing channel (303); a hot airflow chip (34) is disposed inside the airflow chip pack (37), and the airflow chip pack (37) is disposed inside the breathing channel (303). The atomizing head (36) is provided with a vent (304) communicating with the atomizing channel (302) and a breathing detection hole (305) communicating with the breathing channel (303) on its side; the atomizing channel (302) is provided with an air guiding structure that cooperates with the vent (304); the air guiding structure includes a hemispherical diffusion surface (306) diffused from the position of the mesh pack (32), and the vent (304) is perpendicular to the axial direction of the atomizing head (36) and communicates with the hemispherical diffusion surface (306); The direction of airflow generated by the patient's breathing is detected in real time using a thermal airflow chip (34), and the mesh (31) is vibrated according to the airflow direction to atomize the medicine in the medicine cup (21).

2. The handheld intermittent mist-emitting mesh atomizer according to claim 1, characterized in that, The thermal airflow chip (34) includes a micro heat source (341) located on a sensitive film, an upstream temperature sensor (342) and a downstream temperature sensor (343) symmetrically arranged about the micro heat source, and an ambient temperature sensor (344) located on a silicon substrate.

3. The handheld intermittent mist-emitting mesh atomizer according to claim 2, characterized in that, The spray interface (3) is also provided with an auxiliary PCB board (33); the main PCB board (11) is provided with multiple copper pillars (104), and the auxiliary PCB board (33) has multiple first spring pins (301) at corresponding positions. The copper pillars (104) abut against the first spring pins (301); the auxiliary PCB board (33) is wire-bonded to the mesh (31) and the hot airflow chip (34).

4. The handheld intermittent mist-emitting mesh atomizer according to claim 3, characterized in that, The main unit (1) is equipped with a battery, and the main PCB board (11) is electrically connected to the battery; the main unit (1) is also equipped with a charging interface, which is used to charge the battery.

5. The handheld intermittent mist-emitting mesh atomizer according to claim 4, characterized in that, The medicine container (2) also includes a soft rubber (24); the top of the medicine cup (21) is provided with an installation hole, the soft rubber (24) is fixed in the installation hole, and the soft rubber (24) has a through hole inside for inserting the medicine bottle (22).

6. The handheld intermittent mist-emitting mesh atomizer according to claim 5, characterized in that, The main unit (1) is provided with a slide groove (101) on the top, and the liquid medicine tank (2) is provided with a slide table (201), which is slidably connected to the slide groove (101); The bottom of the liquid medicine tank (2) is provided with a boss (202), and the top of the main unit (1) is provided with a spring buckle (102). The spring buckle (102) and the boss (202) are engaged.

7. The handheld intermittent mist-emitting mesh atomizer according to claim 6, characterized in that, The medicine cup (21) also includes a column (203), which corresponds to the opening stopper of the medicine bottle (22) and is connected to the bottom wall of the medicine cup (21). A temperature probe (25) is provided inside the medicine cup (21), and the temperature probe (25) abuts against the second spring pin on the main PCB board (11).

8. The handheld intermittent mist-emitting mesh atomizer according to claim 7, characterized in that, The handheld intermittent mist-emitting mesh atomizer is also provided with a top cover (4); the inner wall of the top cover (4) is provided with a slot that corresponds to the top edge of the medicine cup (21) into which it is inserted.

9. The handheld intermittent mist-emitting mesh atomizer according to claim 1, characterized in that, The air guiding structure also includes an air guiding baffle (307), which is disposed at the end of the vent (304) facing the hemispherical diffusion surface (306) and forms a narrowing channel from the vent (304) to the mesh package (32); an air deflection hole (308) is provided between the air guiding baffle (307) and the outer wall of the mist outlet (36), which is connected to the vent (304) and is arranged along the air outlet direction of the mist outlet (36).

10. A control method for a handheld intermittent mist-emitting mesh atomizer, comprising the handheld intermittent mist-emitting mesh atomizer according to any one of claims 1-9, characterized in that, The micro heat source (341) is controlled to heat, and the upstream temperature value collected by the upstream temperature sensor (342) and the downstream temperature value collected by the downstream temperature sensor (343) are obtained. When the downstream temperature value is higher than the upstream temperature value, and the difference between the two reaches the preset air intake threshold, it is determined to be an air intake flow, and the mesh (31) is driven to start oscillating atomization. When the downstream temperature value is lower than or equal to the upstream temperature value, or the difference between the two does not reach the preset intake threshold, the atomization of the mesh (31) is stopped.

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