An atomization module and an atomizer

Abstract

The application discloses an atomization module and an atomizer, and belongs to the technical field of medical devices. The atomization module comprises: an atomization cylinder, which is internally provided with a liquid storage atomization cavity; and an atomization outlet end of the atomization cylinder is provided with an atomization outlet structure, and an atomization outlet channel and an air inlet channel are formed in the atomization outlet structure, wherein the atomization outlet channel is in communication with the liquid storage atomization cavity, and the air inlet channel is isolated from the atomization outlet channel. Through the above structure, the double-cavity isolation flow channel design of external air suction and drug aerosol output is realized, the mutual interference of the air inlet and the atomization airflow is eliminated, and the atomization efficiency is improved. The application further provides an atomizer comprising the atomization module. The application has the advantages of simple structure, excellent leakage prevention performance, high atomization efficiency, and suitability for various atomization treatment scenes.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an atomizing module and an atomizer. Background Technology

[0002] Compressed nebulizer technology, with its core advantages of strong drug compatibility, stable nebulization performance, and long service life, has become the mainstream technology in both clinical and home nebulization therapy. Its core component is the nebulizer cup. The structural design of the nebulizer cup directly determines core performance aspects such as atomized particle size, drug utilization rate, and treatment safety, making it the core technological carrier of nebulization devices. After years of technological iteration, compressed nebulizer cups have formed a mature standardized production system, and their safety and reliability have been verified through long-term practice by medical institutions and home users worldwide.

[0003] At the core nebulization performance level, most mainstream compressor nebulizers on the market currently rely on the Venturi effect to atomize medication, and their core working principles are highly consistent: compressed gas is delivered from the main unit to the nozzle of the nebulizer, forming a high-speed jet of air and generating negative pressure. This draws the medication from the storage chamber into the airflow channel, where it is torn apart by the high-speed airflow and broken into atomized particles after impacting the impactor pin. These particles are then filtered by a sieve structure to select fine particles that meet medical requirements, which are then delivered to the patient's respiratory tract by the airflow for targeted drug delivery. This technology is highly mature, has low production costs, and has been widely used in various scenarios, including respiratory departments and pediatric departments in hospitals at all levels, as well as home nebulization therapy.

[0004] Regarding the anti-tipping and leak-proof functions, existing nebulizer cup products generally have inherent design flaws: the liquid storage chamber and the liquid atomization chamber of conventional nebulizer cups are open structures that are directly connected, allowing the liquid to flow freely within the chamber. When the nebulizer cup is tilted at an angle exceeding 30° or is bumped and tipped over, the liquid will leak directly from the mist outlet and air inlet. This not only wastes medication and contaminates clothing and equipment, but more seriously, the leaked liquid remains inside the cup. If used improperly, droplets can accumulate and flow into the patient's airway, causing safety risks such as choking and suffocation. This flaw means that traditional nebulizer cups can only be used when the patient is sitting upright, making them completely unsuitable for children who are crying or moving around, or for patients undergoing treatment while lying on their side. Furthermore, compressor nebulizers require an active environment and cannot meet the needs of outdoor emergency scenarios, severely limiting the applicable scenarios for nebulization therapy and significantly reducing the patient's user experience and treatment compliance.

[0005] To address the aforementioned tipping issues, the industry has proposed several improvement solutions, typically including adding leak-proof baffles, simple one-way valves, and side baffles to the liquid storage chamber inside the nebulizer cup. However, these solutions all have significant technical limitations: First, their leak-proof effect is limited, only achieving leak prevention at small angles of ≤45°. When the nebulizer cup is tilted at a large angle or inverted, leakage of the liquid cannot be prevented. Second, there is an irreconcilable contradiction between the leak-proof structure and nebulization performance. The added leak-proof structure will seriously interfere with the airflow field and liquid suction efficiency inside the nebulizer cup, leading to a decrease in the uniformity of atomized particles, a reduction in the proportion of effective particles, an increase in drug residue, and even failure to meet the performance requirements of medical-grade nebulization. Third, the structure has poor reliability, and after long-term use, problems such as valve assembly jamming and sealing failure are prone to occur, resulting in many vulnerable parts and a short service life.

[0006] In summary, although existing compression atomizing cup technology is mature and widely used, it has not been able to overcome the industry's technical bottleneck of "the inability to simultaneously achieve high-efficiency atomization performance and all-angle anti-tipping and anti-leakage," resulting in a significant technological gap and market demand gap. Summary of the Invention

[0007] The purpose of this invention is to provide an atomizing module and atomizer to solve existing problems.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: Firstly, this application provides an atomizing module, which includes: Atomizing cylinder, which has a liquid storage atomizing chamber inside; Atomizing cylinder, which has a liquid storage atomizing chamber inside; The atomizing cylinder has a mist outlet structure at its mist outlet end. The mist outlet structure has a mist outlet channel that communicates with the liquid storage atomizing chamber and an air inlet channel that is isolated from the mist outlet channel.

[0009] In a preferred embodiment of this application, the mist-emitting structure is a nozzle disposed at the mist-emitting end of the atomizing cylinder. The nozzle includes an inner layer and an outer layer, with the mist-emitting channel sandwiched between the inner layer and the outer layer. The outer layer has a mist outlet at one end away from the atomizing cylinder. Around the circumference of the nozzle, the outer layer and the inner layer have correspondingly opened multiple air inlets. The air inlet channel penetrates the mist-emitting channel, and the air inlets are connected to the interior of the inner layer through the air inlet channel.

[0010] In a preferred embodiment of this application, an atomizing core is provided inside the liquid storage atomizing chamber. The atomizing core is connected to a compressed gas source through a compressed gas inlet and to the liquid storage atomizing chamber through an airflow nozzle. It also includes a striker assembly, which includes a liquid guide cone, a striker, and an aerosol baffle. The liquid guide cone is coaxially sleeved on the outside of the atomizing core and sandwiched between the outer wall of the atomizing core to form a liquid inlet channel. The striker is disposed on the outside of the airflow nozzle. The striker and the aerosol baffle are both disposed inside the inner layer. Along the axial direction of the striker, the air inlet is disposed on the side of the aerosol baffle away from the striker.

[0011] In a preferred embodiment of this application, the outer layer has an outer cone-shaped portion at the end away from the atomizing cylinder, and the tip of the outer cone-shaped portion is provided with the mist outlet. The inner layer has an inner cone-shaped portion at the end away from the atomizing cylinder. The outer cone-shaped portion is coaxially sleeved on the outside of the inner cone-shaped portion, and the opening angle of the inner cone-shaped portion is not less than the opening angle of the outer cone-shaped portion.

[0012] In a preferred embodiment of this application, the bottom wall of the liquid storage atomizing chamber includes a sloped portion and a flat portion. The two ends of the flat portion are respectively connected to the sloped portion and the outer wall of the atomizing core. The sloped portion, the flat portion, and the outer wall of the atomizing core form a reflux groove facing the interior of the liquid storage atomizing chamber.

[0013] In a preferred embodiment of this application, around the circumference of the liquid guiding cone, a plurality of mating protrusions are provided at intervals on the flat end face of the liquid guiding cone, and a liquid guiding gap is provided between two adjacent mating protrusions to allow the liquid to pass through, and the plurality of mating protrusions abut against the flat portion.

[0014] In a preferred embodiment of this application, a screening section is provided at one end of the inner layer facing the interior of the liquid storage atomization chamber. Along the axial direction of the impact pin, the screening section is located on the side of the impact pin away from the aerosol baffle, and is used to screen the aerosol after it has been broken by the impact pin, so that the aerosol that meets the particle size requirements enters the mist outlet channel.

[0015] As a preferred embodiment of this application, a dust cap is also included, which is detachably fitted onto the outside of the nozzle to simultaneously block the mist outlet and the air inlet.

[0016] Secondly, this application also provides an atomizer, which includes a compressed air source and an atomizing module as described above, wherein the compressed air source is connected to the atomizing module and is used to supply air to the atomizing module.

[0017] In a preferred embodiment of this application, the compressed air source, the atomizing cylinder, and the nozzle are connected in sequence along the mist outlet direction of the mist outlet channel; or, the compressed air source is located on the side of the atomizing cylinder.

[0018] By adopting the above technical solution, the technical effects achieved by this application include: 1. By adopting the above scheme, the axial direction of the air intake channel is perpendicular to the axial direction of the mist outlet channel, realizing a dual-cavity isolation flow channel design that allows for radial intake of external air and axial output of drug aerosol. This completely eliminates the mutual interference between the intake airflow and the mist outlet airflow, avoids secondary condensation and deposition of atomized particles caused by airflow turbulence, thereby significantly improving atomization efficiency and uniformity of atomized particles. It also avoids the problem of uneven mist output caused by a single-sided air intake.

[0019] 2. By setting up an aerosol baffle, the aerosol that splashes upward after being broken by the impact pin is effectively blocked from directly entering the air inlet, preventing the aerosol from escaping from the air inlet and causing drug waste, thus further improving drug utilization.

[0020] 3. By setting a dust cap to simultaneously block the mist outlet and air inlet, the atomizing module achieves a completely sealed cavity when not in use. No matter the angle or posture of the atomizing module, the liquid in the storage atomizing chamber cannot leak from any port, truly achieving 360° all-angle storage and leak-proof protection. This completely breaks through the limitation of traditional atomizing cups that can only be stored in an upright position, allowing the atomizing module to be carried in a pocket or bag without worrying about leakage.

[0021] 4. By setting the ends of both the outer and inner layers as conical sections with the opening angle of the inner conical section not less than that of the outer conical section, a tapered flow channel structure is formed at the end of the mist outlet channel. Based on the Laval tube effect, the aerosol flow is accelerated, allowing the aerosol to smoothly cross the oral or nasal cavity area and reach the lesion site in the lower respiratory tract, achieving precise targeted drug delivery while reducing condensation.

[0022] 5. By setting a sloping and flat surface on the bottom wall of the liquid storage atomization chamber to form a reflux groove, and setting a matching protrusion at the flat end of the liquid guide cone to form a liquid guide gap, the liquid can be effectively guided back and the liquid inlet volume can be precisely controlled, thereby further reducing drug residue and improving atomization stability.

[0023] 6. By setting up a screening section, large particles are intercepted using the principle of inertial collision and re-nebulized, ensuring that only fine particles that meet the medical particle size requirements are output, thus improving the safety and effectiveness of nebulization therapy. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the atomization module in an example; Figure 2 for Figure 1 A cross-sectional view of the atomizing module from an AA perspective; Figure 3 A cross-sectional view of the combined structure of the nozzle, atomizing cylinder, and impact pin assembly from one perspective; Figure 4 for Figure 3 Enlarged view of the structure of section B; Figure 5 for Figure 3 Enlarged view of the structure of section C in the middle; Figure 6 This is a partial structural cross-sectional view of the assembly structure of the mouthpiece, atomizing cylinder, and firing pin from one perspective. Figure 7 This is a schematic diagram of the atomizing cylinder. Figure 8 This is a cross-sectional view of the atomizing cylinder. Figure 9 This is a schematic diagram of the nozzle structure; Figure 10 for Figure 9 A cross-sectional view of the nozzle from a DD perspective; Figure 11 Here is a schematic diagram of the structure of a dust cap in an example; Figure 12 Here is a schematic diagram of the firing pin assembly in an example; Figure 13 This is a schematic diagram of the structure of an atomizer in an example; Figure 14 This is a partial structural diagram of an atomizer in another example.

[0025] List of components and reference numerals: 1 Atomizing cylinder, 11 Liquid storage atomizing chamber, 111 Sloping part, 112 Flat part, 113 Return groove, 12 Atomizing core, 121 Airflow nozzle, 122 Compressed gas inlet, 13 Swirl groove; 2. Nozzle, 21. Outer layer, 211. Mist outlet, 212. Outer cone-shaped part, 213. Twist, 22. Inner layer, 221. Inner cone-shaped part, 222. Screening part, 23. Air inlet, 24. Air inlet channel; 3 fog exit channels; 41 firing pin, 42 liquid guide cone, 421 mating protrusion, 43 aerosol cover; 5 liquid inlet channels; 6. Dustproof cap; 61. End face sealing surface; 62. Annular silicone seal; 7. Compressed air source. Detailed Implementation

[0026] To more clearly illustrate the overall concept of the present invention, a detailed description will be provided below with reference to the accompanying drawings and examples.

[0027] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0028] like Figures 1-12 As shown, this application first provides an atomizing module, which includes an atomizing cylinder 1 and a mist outlet structure disposed at the mist outlet end of the atomizing cylinder 1. The atomizing cylinder 1 has a liquid storage atomizing chamber 11 inside, and the mist outlet structure has a mist outlet channel 3 communicating with the liquid storage atomizing chamber 11 and an air inlet channel 24 isolated from the mist outlet channel 3. In one example, refer to... Figure 1 and Figure 2 As shown, the mist-emitting structure is a nozzle 2 disposed at the mist-emitting end of the atomizing cylinder 1. Preferably, the nozzle 2 is detachably connected to the mist-emitting end of the atomizing cylinder 1. The nozzle 2 has a mist-emitting channel 3 communicating with the liquid storage atomizing chamber 11 and an air inlet channel 24 isolated from the mist-emitting channel 3, and the axial direction of the air inlet channel 24 is perpendicular to the axial direction of the mist-emitting channel 3. Specifically, refer to... Figures 2-6 and Figure 8 As shown, the nozzle 2 includes an inner layer 22 and an outer layer 21. A mist outlet channel 3 is sandwiched between the inner layer 22 and the outer layer 21. A mist outlet 211 is located at the end of the outer layer 21 furthest from the atomizing cylinder 1. Multiple air inlets 23 are correspondingly provided on the outer layer 21 and the inner layer 22 around the circumference of the nozzle 2. An air inlet channel 24 penetrates the mist outlet channel, and the air inlets 23 on the outer layer 21 and the inner layer 22 are connected to the interior of the inner layer 22 through the air inlet channel 24. This structure achieves a dual-cavity isolated flow channel design, allowing for radial intake of external air and axial output of the drug aerosol. This completely eliminates the mutual interference between the intake airflow and the mist outlet airflow, avoiding secondary condensation and deposition of atomized particles caused by airflow turbulence. This significantly improves atomization efficiency and the uniformity of atomized particles, while also avoiding the problem of uneven mist output caused by a single-sided air inlet.

[0029] It should be noted that the atomization structure in this application is not limited to the example above. The example above is only a preferred example of this application, and other different structural settings can also be adopted. This application does not make any specific limitations on this.

[0030] Furthermore, continue to refer to Figures 2-6 and Figure 8As shown, the liquid storage atomizing chamber 11 is provided with an atomizing core 12. The atomizing core 12 is connected to a compressed gas source through a compressed gas inlet 122 and is connected to the liquid storage atomizing chamber 11 through an airflow nozzle 121. It also includes a striker assembly, which includes a liquid guide cone 42, a striker 41 and an aerosol baffle 43. The liquid guide cone 42 is coaxially sleeved on the outside of the atomizing core 12 and sandwiched with the outer wall of the atomizing core 12 to form a liquid inlet channel 5. The striker 41 is located on the outside of the airflow nozzle 121. The striker 41 and the aerosol baffle 43 are both located inside the inner layer 22. Along the axial direction of the striker 41, the air inlet 23 is located on the side of the aerosol baffle 43 away from the striker 41. Since the air inlet 23 is located on the side of the aerosol cover 43 away from the impact pin 41, the aerosol cover 43 can effectively block the aerosol that splashes upward after being broken by the impact pin 41 from directly entering the air inlet 23, preventing the aerosol from escaping from the air inlet 23 and causing drug waste, ensuring that all aerosol is output through the mist outlet channel 3, and further improving the drug utilization rate.

[0031] In a preferred example, refer to Figure 2 , Figure 3 , Figure 6 and Figures 9-10 As shown, three air inlets 23 are provided, and the three air inlets 23 are evenly spaced around the circumference of the nozzle 2. This arrangement can ensure the stability of the mist flow in the mist outlet channel 3 and avoid the problem of secondary condensation and deposition of atomized particles caused by airflow turbulence. It should be noted that the above example is only a preferred example of this application. The arrangement of the air inlets 23 in this application is not limited to the above example. In another example, the outer air inlet 23 can also be set on the side wall of the air outlet end of the atomizing cylinder 1 near the nozzle 2. Similarly, it is connected to the interior of the inner layer 22 through the air inlet channel 24 that penetrates the mist outlet channel 3. Correspondingly, the position of the mist baffle 43 is moved to ensure that the air inlet 23 of the inner layer 22 is still on the side of the mist baffle 43 away from the impact pin 41, ensuring the isolation between the intake airflow and the mist outlet airflow. Of course, it can also adopt other different arrangements, such as adjusting the three equal parts of the mist outlet channel 3 inside the atomizing cylinder 1 to four or six equal parts of the circumferentially distributed mist outlet channel 3. In this way, the number of channels can be flexibly adjusted according to the overall size of the atomizing cylinder 1 and the rated aerosol output, to adapt to different gas source parameters and aerosol drug delivery requirements, and to achieve the core effects of reducing aerosol obstruction, reducing flow resistance and improving aerosol efficiency. This application does not make specific limitations in this regard.

[0032] Furthermore, referring to Figure 5 and Figure 12As shown, around the circumference of the liquid guiding cone 42, multiple mating protrusions 421 are spaced apart on the flat end face of the liquid guiding cone 42. A liquid guiding gap is provided between adjacent mating protrusions 421 to allow the liquid to pass through. The multiple mating protrusions 421 abut against the flat portion 112. By spaced apart on the flat end face of the liquid guiding cone 42 and abutting against the flat portion 112, a stable support structure is formed between the liquid guiding cone 42 and the flat portion 112. This ensures the coaxiality and spacing accuracy between the liquid guiding cone 42 and the atomizing core 12, avoiding the problem of uneven width of the inlet channel 5 due to assembly deviations, which would affect the stability of liquid suction. Furthermore, the liquid guiding gap between adjacent mating protrusions 421 constitutes the entrance for the liquid into the inlet channel 5. The size and number of this gap can be precisely designed according to atomization requirements, thereby achieving precise control of the liquid intake and making the atomization rate more stable and controllable. In actual use, high-pressure gas from an external compressed air source enters the atomizing core 12 through the compressed gas inlet 122 and is ejected, forming a high-speed jet of air and generating negative pressure. This draws the liquid medicine stored at the bottom of the liquid storage atomizing chamber 11 into the liquid inlet channel 5. The liquid medicine is torn apart by the high-speed airflow and then breaks into atomized particles after impacting the impact pin 41 located outside the airflow nozzle 121. The particles are then guided through the mist outlet channel 3 sandwiched between the inner and outer layers 21 of the nozzle 2 and finally flow out through the mist outlet 211 on the outer layer 21 of the nozzle 2 and are absorbed by the user. At the same time, during use, external air is drawn in through the air inlet 23 perpendicular to the mist outlet direction. During the intake process, the inner shell 22 and the mist baffle 43 effectively isolate the atomized liquid medicine in the mist outlet channel 3.

[0033] Continue to refer to Figure 2 As shown, the atomizing module in this application also includes a dust cap 6, which is detachably fitted onto the outside of the nozzle 2 to simultaneously block the mist outlet 211 and the air inlet 23. As a preferred embodiment of this application, refer to... Figure 2 and Figure 11 As shown, the inner wall shape of the dust cap 6 is adapted to the outer wall shape of the outer layer 21, and the inner wall of the dust cap 6 is provided with seals corresponding to the mist outlet 211 and the air inlet 23. When the dust cap 6 is closed, the seals abut against the mist outlet 211 and the air inlet 23 to achieve a seal. In one example, refer to... Figure 11As shown, the sealing element includes an end face sealing surface 61 on the bottom wall of the dust cap 6, and a highly elastic annular silicone seal 62 (such as an O-ring structure) on the inner wall of the dust cap 6. When the patient is intermittently nebulized or does not need to nebulize, the dust cap 6 is simply fastened to the end of the mouthpiece 2. After the cap is assembled, the end face sealing surface 61 of its inner bottom wall is tightly fitted with the end face of the mouthpiece 2 mist outlet 211, achieving a complete seal of the mist outlet 211. At the same time, the annular silicone seal 62 on the inner wall of the dust cap 6 is exactly aligned with the air inlet 23 of the outer layer 21 of the mouthpiece 2, and completely blocks the air inlet 23 through its own elastic deformation. In another example, the seal is an integrated end-face sealing gasket set on the inner wall of the dust cap 6. Specifically, a silicone end-face sealing gasket that corresponds completely to the mist outlet 211 and the air inlet 23 is set on the inner wall of the dust cap 6. When the dust cap 6 is assembled in place, the end-face sealing gasket is pressed axially to simultaneously adhere to and block the end face of the mist outlet 211 of the nozzle 2 and the outer end face of all the air inlets 23, thereby achieving a complete sealing of the entire cavity of the atomizing cylinder 1. By setting sealing elements on the inner wall of the dust cap 6 corresponding to the mist outlet 211 and the air inlet 23, and by having the sealing elements abut against the surfaces of the mist outlet 211 and the air inlet 23 respectively when the cap is closed, independent and reliable sealing of the two ports is achieved. This avoids the risk of loss of overall sealing function due to the failure of a single sealing structure. At the same time, since the sealing elements are precisely aligned with the port positions, no additional alignment operation is required when closing the cap. Users can simply fasten the dust cap 6 to automatically complete the sealing, which greatly improves the convenience of use and is especially suitable for users with weak fine motor skills, such as children and the elderly. In addition, the dust cap 6 can simultaneously block the mist outlet 211 and the air inlet 23, so that the atomizing module can achieve full cavity sealing when not in use. No matter what angle or posture the atomizing module is in, the liquid in the liquid storage atomizing chamber 11 cannot leak from any port, truly achieving 360° all-angle storage and leak prevention. This completely breaks through the limitation of traditional atomizing cups that can only be stored in an upright position, allowing the atomizing module to be carried in a pocket or bag without worrying about leakage.

[0034] It should also be noted that the structural design of the dust cap 6 in this application is not limited to the above example. The above example is only a preferred example of this application. The dust cap 6 can adopt the structural design scheme in the above example, or it can adopt other different structural design schemes. This application does not make any specific limitation on this.

[0035] In a preferred embodiment of this application, the nozzle 2 and the atomizing cylinder 1 are detachably connected by a screw-on or threaded structure. In a preferred example, refer to… Figures 7-10As shown, the outer layer 21 of the nozzle 2 has a buckle 213 at its end edge, and the mist outlet edge of the atomizing cylinder 1 has a groove 13 corresponding to the buckle 213. The nozzle 2 and the atomizing cylinder 1 are detachably connected through the engagement of the buckle 213 and the groove 13. In the above solution, the connection structure between the nozzle 2 and the atomizing cylinder 1 is simple and reliable. On the one hand, it ensures the reliability of the connection during normal use and carrying, and will not loosen even under violent shaking or accidental impact, thus avoiding leakage of medicine due to loose connection. On the other hand, the detachable design allows users to easily remove the nozzle 2 for separate cleaning or replacement, reducing the maintenance difficulty and usage cost of the atomizing module, and also providing a structural basis for the disposable application of the atomizing module.

[0036] Furthermore, referring to Figure 2 , Figure 3 , Figure 6 and Figure 10 As shown, the outer layer 21 has an outer cone-shaped portion 212 at the end away from the atomizing cylinder 1, and the tip of the outer cone-shaped portion 212 is provided with a mist outlet 211. The inner layer 22 has an inner cone-shaped portion 221 at the end away from the atomizing cylinder 1. The outer cone-shaped portion 212 is coaxially sleeved on the outside of the inner cone-shaped portion 221, and the opening angle of the inner cone-shaped portion 221 is not less than the opening angle of the outer cone-shaped portion 212. By setting the ends of both the outer layer 21 and the inner layer 22 as conical portions, and ensuring that the opening angle of the inner conical portion 221 is not less than that of the outer conical portion 212, a tapered flow channel structure is formed at the end of the mist outlet channel 3. Based on the Laval tube effect, the aerosol is continuously accelerated as it flows through this tapered flow channel, and is finally ejected from the mist outlet 211 at a high flow rate. This allows the aerosol to smoothly cross the oral or nasal cavity area and reach the lesion site in the lower respiratory tract, achieving precise targeted drug delivery. At the same time, the high-speed airflow can effectively reduce the condensation phenomenon caused by temperature difference and gas phase change, further enhancing the nebulization effect. In addition, the inner surface of the inner conical portion 221 forms a conical guide surface. When large particles of condensate or unnebulized drug inevitably occur at the mist outlet 211, these liquids will slide down along the conical surface under the action of gravity and flow back into the liquid storage nebulization chamber 11 to re-participate in nebulization, greatly reducing drug residue and waste.

[0037] Furthermore, referring to Figure 5 and Figure 8As shown, the bottom wall of the liquid storage atomizing chamber 11 includes a sloped portion 111 and a flat portion 112. The two ends of the flat portion 112 are respectively connected to the sloped portion 111 and the outer wall of the atomizing core 12. The sloped portion 111, the flat portion 112 and the outer wall of the atomizing core 12 form a reflux groove 113 facing the inside of the liquid storage atomizing chamber 11. By setting a sloping surface 111 and a flat surface 112 on the bottom wall of the liquid storage atomizing chamber 11, and having the two together with the outer wall of the atomizing core 12 to form a return groove 113 facing the inside of the liquid storage atomizing chamber 11, when the atomizing module is in a tilted or shaking state, the un-atomized liquid will be collected by the return groove 113 and guided to the area near the atomizing core 12, ensuring that the atomizing core 12 can continuously and stably draw liquid for atomization, avoiding atomization interruption or fluctuation in atomization volume caused by uneven distribution of liquid. At the same time, when the atomizing module returns to a vertical state, the liquid remaining on the sloping surface 111 and the flat surface 112 will also be collected along the sloping surface into the return groove 113 under the action of gravity, minimizing the residue of liquid on the bottom wall and improving drug utilization.

[0038] In a preferred embodiment of this application, a hydrophobic layer is provided on the inner wall of the liquid storage atomizing chamber 11, the inner wall of the outer layer 21, and the surface of the inner layer 22. By providing a hydrophobic layer on the inner wall of the liquid storage atomizing chamber 11, the inner wall of the outer layer 21, and the surface of the inner layer 22, all surfaces inside the atomizing module that come into contact with the liquid have hydrophobic properties. When tiny droplets or condensate generated during atomization come into contact with these surfaces, they will quickly aggregate into larger droplets due to the hydrophobic effect and roll back into the liquid storage atomizing chamber 11 under the action of gravity. This prevents the liquid from adhering to the wall surface in the form of a thin film and forming stubborn residues, thereby significantly reducing the amount of drug residue. At the same time, the hydrophobic layer can also effectively inhibit the adhesion and reproduction of bacteria and microorganisms on the wall surface, improving the hygiene and safety of the atomizing module, which is especially suitable for application scenarios of disposable atomizing products.

[0039] As a preferred embodiment of this application, refer to Figure 3 , Figure 4 , Figure 6 and Figures 9-10As shown, a screening section 222 is provided at one end of the inner layer 22 facing the interior of the liquid storage atomization chamber 11. Along the axial direction of the impact pin 41, the screening section 222 is located on the side of the impact pin 41 away from the aerosol baffle 43. It is used to screen the aerosol after it has been broken by the impact pin 41, so that the aerosol that meets the particle size requirements enters the mist outlet channel 3. When the aerosol containing particles of different sizes formed by the impact pin 41 flows upward, the screening section 222 uses the principle of inertial collision to classify and screen large and small particles: large particles, due to their greater inertia, cannot follow the direction of the airflow and collide with the surface of the screening section 222 and are intercepted. Then, under the action of gravity, they flow back to the liquid storage atomization chamber 11 for re-atomization, while small particles can smoothly bypass the screening section 222 and enter the mist outlet channel 3. This ensures that only fine particles that meet the medical particle size requirements can be delivered to the patient, significantly improving the safety and effectiveness of nebulization therapy. At the same time, the intercepted large particles are not discarded but are recycled, further improving drug utilization and reducing drug waste.

[0040] Furthermore, referring to Figure 13 and Figure 14 As shown, this application also provides a nebulizer, which includes a compressed air source 7 and the aforementioned nebulization module. The compressed air source 7 is connected to the compressed gas inlet 122 of the nebulization core 12. The aforementioned nebulization module and compressed air source 7 are combined to form a complete nebulizer, realizing a closed-loop process from compressed gas supply to liquid nebulization and then to aerosol output. Users only need to inject the liquid into the liquid storage nebulization chamber 11 and connect the compressed air source 7 to start nebulization treatment immediately. The operation is extremely simple. At the same time, since the nebulization module itself has an all-angle storage and anti-leakage function, even if the nebulizer is placed or carried at will when not in use, there is no need to worry about liquid leakage. This greatly expands the application scenarios of the nebulizer, making it not only suitable for fixed places such as hospitals and homes, but also easily applicable to mobile scenarios such as outdoor travel and business trips.

[0041] In one example, refer to Figure 13 As shown, along the mist outlet direction of the mist outlet channel 3, the compressed air source 7, the atomizing cylinder 1, and the nozzle 2 are connected in sequence. In another example, refer to... Figure 14 As shown, the compressed air source 7 is located on the side of the atomizing cylinder 1. When the compressed air source 7, the atomizing cylinder 1, and the mouthpiece 2 are connected in sequence, the atomizer has an overall vertical layout, a compact structure, and a central center of gravity, making it easy for users to hold and operate, especially suitable for children and elderly users. When the compressed air source 7 is located on the side of the atomizing cylinder 1, the overall height of the atomizer is reduced, making it easier to put in a pocket or bag for carrying.

[0042] The technical solutions protected by this invention are not limited to the above embodiments. It should be noted that any combination of the technical solutions of any embodiment with one or more other embodiments is within the scope of protection of this invention. Although the invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of this invention are within the scope of protection claimed by this invention.

Claims

1. An atomizing module, characterized in that, include: Atomizing cylinder, which has a liquid storage atomizing chamber inside; The atomizing cylinder has a mist outlet structure at its mist outlet end. The mist outlet structure has a mist outlet channel that communicates with the liquid storage atomizing chamber and an air inlet channel that is isolated from the mist outlet channel.

2. The atomizing module according to claim 1, characterized in that, The mist-emitting structure is a nozzle disposed at the mist-emitting end of the atomizing cylinder. The nozzle includes an inner layer and an outer layer. The mist-emitting channel is sandwiched between the inner layer and the outer layer. A mist outlet is provided at the end of the outer layer away from the atomizing cylinder. Around the circumference of the nozzle, the outer layer and the inner layer are provided with multiple air inlets corresponding to each other. The air inlet channel passes through the mist-emitting channel, and the air inlet is connected to the interior of the inner layer through the air inlet channel.

3. The atomizing module according to claim 2, characterized in that, The liquid storage atomizing chamber is equipped with an atomizing core. The atomizing core is connected to a compressed gas source through a compressed gas inlet and to the liquid storage atomizing chamber through an airflow nozzle. It also includes a striker assembly, which includes a liquid guide cone, a striker, and an aerosol baffle. The liquid guide cone is coaxially sleeved on the outside of the atomizing core and sandwiched between the outer wall of the atomizing core to form a liquid inlet channel. The striker is disposed on the outside of the airflow nozzle. The striker and the aerosol baffle are both disposed inside the inner layer. Along the axial direction of the striker, the air inlet is disposed on the side of the aerosol baffle away from the striker.

4. The atomizing module according to claim 2, characterized in that, The outer layer has an outer cone-shaped portion at the end away from the atomizing cylinder, and the tip of the outer cone-shaped portion is provided with the mist outlet. The inner layer has an inner cone-shaped portion at the end away from the atomizing cylinder. The outer cone-shaped portion is coaxially sleeved on the outside of the inner cone-shaped portion, and the opening angle of the inner cone-shaped portion is not less than the opening angle of the outer cone-shaped portion.

5. The atomizing module according to claim 3, characterized in that, The bottom wall of the liquid storage atomizing chamber includes a sloped portion and a flat portion. The two ends of the flat portion are respectively connected to the sloped portion and the outer wall of the atomizing core. The sloped portion, the flat portion and the outer wall of the atomizing core form a reflux groove facing the interior of the liquid storage atomizing chamber.

6. The atomizing module according to claim 5, characterized in that, Around the circumference of the liquid guiding cone, the flat end face of the liquid guiding cone is provided with a plurality of mating protrusions at intervals, and there is a liquid guiding gap between two adjacent mating protrusions that allows the liquid to pass through, and the plurality of mating protrusions abut against the flat part.

7. The atomizing module according to claim 3, characterized in that, A screening section is provided at one end of the inner layer facing the interior of the liquid storage atomization chamber. Along the axial direction of the impact pin, the screening section is located on the side of the impact pin away from the aerosol baffle, and is used to screen the aerosol after it has been broken by the impact pin, so that the aerosol that meets the particle size requirements enters the mist outlet channel.

8. The atomizing module according to claim 2, characterized in that, It also includes a dust cap, which is detachably fitted onto the outside of the nozzle to simultaneously block the mist outlet and the air inlet.

9. An atomizer, characterized in that, It includes a compressed air source and an atomizing module as described in any one of claims 1-8, wherein the compressed air source is connected to the atomizing module and is used to supply air to the atomizing module.

10. The atomizer according to claim 9, characterized in that, Along the mist outlet direction of the mist outlet channel, the compressed air source, the atomizing cylinder, and the nozzle are connected in sequence, or the compressed air source is located on the side of the atomizing cylinder.

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