Ultrasonic atomizer
By designing an inclined return tube and a conical return channel in an ultrasonic atomizer, the problem that aerosol particles cannot penetrate deep into the lower respiratory tract in the prior art is solved, and more uniform and fine aerosol generation is achieved, which improves drug absorption efficiency and therapeutic effects.
Patent Information
- Application Number
- CN202520080671.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2035-01-14
AI Technical Summary
When existing ultrasonic nebulizers treat lower respiratory tract diseases, since the atomized medicine liquid is prone to produce larger aerosol particles, these particles may not be able to penetrate deep into the lower respiratory tract, affecting the absorption efficiency and therapeutic effect of the drug.
An ultrasonic atomizer is designed. By tilting the reflux tube between the input end of the breathing tube and the medicine liquid chamber, the larger aerosol particles are settled and returned to the medicine liquid chamber for secondary atomization using gravity. The inner wall of the return tube is smooth and the diameter gradually decreases, and the tapered design helps concentrate the airflow and increases the airflow velocity to separate larger particles.
Secondary atomization ensures that the generated aerosol particles are more uniform and fine, improve the absorption efficiency of drugs, reduce drug waste and optimize the therapeutic effect.
Smart Images
Figure CN222488441U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical equipment, in particular to an ultrasonic atomizer. Background Art
[0002] Nebulization is an important means of treating nasopharyngeal and respiratory diseases. The drug solution is atomized through an ultrasonic nebulizer, and the atomized drug solution is delivered to the human respiratory tract through breathing and a mask to promote the patient's physical recovery.
[0003] However, when the existing ultrasonic nebulizer is in use, it is easy for the ultrasonic nebulizer to produce larger aerosol particles due to factors such as the frequency of the ultrasonic wave, the viscosity and density of the drug solution, and the structural design of the drug solution chamber. The larger aerosol particles are easy to deposit in the patient's upper respiratory tract such as the mouth and throat, and may not penetrate into the lower respiratory tract, which not only affects the absorption efficiency of the drug but also has a poor therapeutic effect on lower respiratory tract diseases. Utility Model Content
[0004] In view of this, the purpose of the utility model is to provide an ultrasonic nebulizer to solve the technical problem in the prior art that, when treating lower respiratory tract diseases, the ultrasonic nebulizer easily produces larger aerosol particles when atomizing the medicine solution, and the larger aerosol particles may not penetrate deeply into the lower respiratory tract, thereby affecting the absorption efficiency of the drug and the treatment effect.
[0005] The utility model is realized by the following technical solutions:
[0006] An ultrasonic atomizer comprises a shell with a liquid medicine chamber, an ultrasonic generator is installed at the bottom of the liquid medicine chamber, and a breathing tube is located outside the shell, a reflux pipe is installed obliquely between the input end of the breathing tube and the liquid medicine chamber, a reflux channel is provided inside the reflux pipe, the inner wall of the reflux channel is smooth, and the diameter of the reflux channel gradually decreases from the liquid medicine chamber end to the breathing tube end.
[0007] Further, the reflux pipe includes an upper connection portion extending out of the housing and connected to the breathing tube, and a lower connection portion communicating with the liquid medicine chamber, and an inclined portion is integrally formed between the two connection portions;
[0008] A filter core tube is threadedly connected in the upper connection portion, and a filter screen A is installed in the bottom opening of the filter core tube.
[0009] Furthermore, the bottom of the filter core tube is truncated cone-shaped to form a filtering space between the bottom of the filter core tube and the inner wall of the upper connecting portion. A plurality of through holes are radially penetrated through the bottom of the filter core tube, and a filter net B is fixedly connected to each of the through holes.
[0010] Furthermore, a rod body is fixedly connected to the inner wall of the filter core tube, and the rod body is located in the top opening of the filter core tube.
[0011] Furthermore, a plurality of stopper sheets A and stopper sheets B are fixedly connected to the inner wall of the reflux channel in an inclined manner, and the stopper sheets A and the stopper sheets B are arranged in a staggered manner relative to each other;
[0012] The length of the stopper piece B is greater than that of the stopper piece A, and the stopper piece A and the stopper piece B respectively form a stopper space with the inner wall of the reflux channel, and the opening of the stopper space is inclined downward.
[0013] Furthermore, the angle between the inclined portion and the vertical plane is between fifteen and thirty degrees.
[0014] The beneficial effects of the utility model are:
[0015] 1. By obliquely installing a reflux pipe between the input end of the breathing tube and the liquid medicine chamber, the larger aerosol particles generated by the atomization of the liquid medicine are suspended in the air for a shorter time due to gravity, so that they settle and flow back to the liquid medicine chamber for secondary atomization, so as to ensure that the generated aerosol particles are more uniform and fine, improve the absorption efficiency of the medicine, reduce the waste of the medicine and optimize the treatment effect;
[0016] Secondly, the reflux pipe can extend the flow path of the aerosol generated after the drug solution is atomized, thereby providing more space and time for larger aerosol particles to settle.
[0017] 2. The reflux tube has a reflux channel inside. The smooth inner wall of the reflux channel can reduce the adhesion of particles on the tube wall, making it easier for the particles to return to the liquid medicine chamber for secondary atomization. The diameter of the reflux channel gradually decreases from the liquid medicine chamber end to the breathing tube end, so that the cross-section of the reflux channel is similar to a cone. The conical reflux channel design helps to concentrate the airflow, making it easier for larger aerosol particles to settle near the tube wall. As the tube diameter gradually decreases, the airflow velocity increases, which increases the kinetic energy of the airflow. Larger particles are easier to separate from the airflow due to their greater inertia, and larger aerosol particles are easier to settle.
[0018] Secondly, higher air flow velocities can better disperse aerosol particles to ensure that aerosol particles are evenly distributed in the airflow, improving the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural schematic diagram of the ultrasonic atomizer of the utility model.
[0020] Figure 2 It is a cross-sectional view of the shell of the ultrasonic atomizer of the utility model.
[0021] Figure 3 It is a schematic diagram of the connection between the filter core tube and the upper connecting part of the ultrasonic atomizer of the utility model.
[0022] Figure 4 The utility model is a schematic diagram of the connection between the filter screen A and the filter core tube of the ultrasonic atomizer.
[0023] In the figure: 1-liquid chamber, 2-shell, 3-ultrasonic generator, 4-breathing tube, 5-reflux pipe, 51-reflux channel, 52-upper connecting part, 53-lower connecting part, 54-inclined part, 6-filter core tube, 7-filter screen A, 8-filter space, 9-through hole, 10-filter screen B, 11-rod body, 12-stop plate A, 13-stop plate B, 14-stop space. DETAILED DESCRIPTION
[0024] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present invention.
[0025] In the description of the present application, the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the structure referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0026] See also Figure 1 and Figure 2 The utility model provides a technical solution: an ultrasonic atomizer, comprising a housing 2 having a liquid medicine chamber 1, an ultrasonic generator 3 is installed at the bottom of the liquid medicine chamber 1, and the ultrasonic generator 3 is used to atomize the liquid medicine in the liquid medicine chamber 1 to generate aerosol particles. The specific structure and working principle of the ultrasonic atomizer are relatively mature in the current technology, and no further elaboration is made here;
[0027] It also includes a breathing tube 4 located outside the shell 2, the output end of the breathing tube 4 is connected to an atomizing mask for the patient to wear, and cooperate with the breathing tube 4 to inhale the atomized liquid medicine into the body for treatment, and a reflux pipe 5 is obliquely installed between the input end of the breathing tube 4 and the liquid medicine chamber 1. At this time, the larger aerosol particles generated by the atomization of the liquid medicine have a shorter suspension time in the air due to the action of gravity, so that they settle and flow back to the liquid medicine chamber 1 for secondary atomization, which can ensure that the generated aerosol particles are more uniform and fine, improve the absorption efficiency of the medicine, reduce the waste of the medicine and optimize the treatment effect;
[0028] The angle between the return pipe 5 and the vertical plane is between 15 and 30 degrees. If the angle is too large, it may cause air turbulence and affect the sedimentation effect.
[0029] Secondly, the reflux pipe 5 can extend the flow path of the aerosol generated after the liquid medicine is atomized, thereby providing more space and time for larger aerosol particles to settle.
[0030] See also Figure 2 The reflux tube 5 has a reflux channel 51 inside. The smooth inner wall of the reflux channel 51 can reduce the adhesion of particles on the tube wall, making it easier for the particles to reflux into the liquid medicine chamber 1 for secondary atomization. The diameter of the reflux channel 51 gradually decreases from the end of the liquid medicine chamber 1 to the end of the breathing tube 4, so that the cross-section of the reflux channel 51 is similar to a cone. The conical design of the reflux channel 51 helps to concentrate the airflow, making it easier for larger aerosol particles to settle near the tube wall. As the tube diameter gradually decreases, the airflow velocity increases, which increases the kinetic energy of the airflow. Larger particles are easier to separate from the airflow due to their larger inertia, and larger aerosol particles are easier to settle.
[0031] Secondly, higher air flow velocities can better disperse aerosol particles to ensure that aerosol particles are evenly distributed in the airflow, improving the treatment effect.
[0032] See also Figure 2 A plurality of stopper sheets A12 and stopper sheets B13 are fixedly connected to the inner wall of the reflux channel 51 in an inclined manner, and the stopper sheets A12 and the stopper sheets B13 are arranged in a staggered manner relative to each other;
[0033] The length of the stop piece B13 is greater than that of the stop piece A12, and the stop piece A12 and the stop piece B13 respectively form a stop space 14 with the inner wall of the reflux channel 51, and the opening of the stop space 14 is inclined downward, and the stop space 14 is formed by the staggered cooperation of the stop piece A12 and the stop piece B13. During the atomization process, the flow of aerosol particles is physically blocked to prevent them from continuing to move forward with the airflow, thereby separating larger aerosol particles. The separated larger aerosol particles are freely settled down along the reflux channel 51 from the opening of the stop space 14 under the influence of gravity and flow back into the medicine liquid chamber 1 for secondary atomization.
[0034] See also Figures 2 to 4 The return pipe 5 includes an upper connecting portion 52 extending from the housing 2 and connected to the breathing tube 4, and a lower connecting portion 53 communicating with the liquid medicine chamber 1. The two connecting portions are provided with a sealing structure in the prior art (not shown), such as an O-ring, etc., to ensure that there is no leakage during the atomization process. An inclined portion 54 is integrally formed between the two connecting portions;
[0035] The upper connecting portion 52 is threadedly connected with a filter core tube 6, and the inner wall of the filter core tube 6 is fixedly connected with a rod body 11, and the rod body 11 is located in the top opening of the filter core tube 6, and the filter core tube 6 can be screwed and disassembled and installed by the rod body 11. A filter screen A7 is installed in the bottom opening of the filter core tube 6, and the filter screen A7 is set before the aerosol particles are about to enter the breathing tube 4 to ensure that only fine particles pass through;
[0036] The bottom of the filter core tube 6 is truncated cone-shaped to form a filtering space 8 between the bottom of the filter core tube 6 and the inner wall of the upper connecting part 52. A plurality of through holes 9 are radially penetrated at the bottom of the filter core tube 6. A filter screen B10 is fixedly connected to each of the through holes 9. The material and aperture of the filter screen B10 and the filter screen A7 can be selected as needed. Common materials include metal mesh, fiber mesh, etc. The filtering efficiency can be ensured by installing a plurality of filter screens on the side of the filter core tube 6. Secondly, a filtering space 8 is formed between the bottom of the filter core tube 6 and the inner wall of the upper connecting part 52 to provide space for further filtering of aerosol particles, and larger aerosol particles settle downward for reflux.
[0037] The working process of the utility model is as follows: the liquid medicine in the liquid medicine chamber 1 is atomized into aerosol particles by the ultrasonic generator 3, and then the aerosol particles flow along the reflux pipe 5 into the breathing tube 4, and finally are inhaled into the patient's body through the atomizing mask connected to the breathing tube 4 for treatment. As for how to add liquid medicine to the liquid medicine chamber 1, it is not the focus of this application document, and the prior art is relatively mature, so it will not be elaborated here.
[0038] Specifically, when the aerosol flows in the reflux pipe 5: a reflux pipe 5 is obliquely installed between the input end of the breathing tube 4 and the liquid medicine chamber 1, and the flow path of the aerosol generated after the liquid medicine is atomized can be extended through the reflux pipe 5, thereby providing more space and time for larger aerosol particles to settle;
[0039] The reflux tube 5 has a reflux channel 51 inside, and the diameter of the reflux channel 51 gradually decreases from the end of the liquid medicine chamber 1 to the end of the breathing tube 4, so that the cross section of the reflux channel 51 is similar to a cone. The conical design of the reflux channel 51 helps to concentrate the airflow, so that larger aerosol particles are more likely to settle near the tube wall, and as the tube diameter gradually decreases, the airflow speed increases, which increases the kinetic energy of the airflow. Larger particles are more likely to be separated from the airflow due to their greater inertia, and larger aerosol particles are more likely to settle;
[0040] Secondly, the stopper sheet A12 and the stopper sheet B13 in the reflux pipe 5 are staggered to form a stopper space 14, which physically blocks the flow of aerosol particles during the atomization process, so that the aerosol particles cannot continue to move forward with the airflow, thereby separating larger aerosol particles.
[0041] Finally, before the aerosol particles generated by atomization enter the breathing tube 4, they pass through the filter A7 and the filter B10 to ensure that only fine particles pass through and enter the breathing tube 4. The larger aerosol particles separated in the whole process settle due to gravity and flow back to the medicine liquid chamber 1 for secondary atomization, which can ensure that the generated aerosol particles are more uniform and fine, thereby improving the absorption efficiency of the drug, reducing the waste of the drug and optimizing the treatment effect.
[0042] Finally, it should be noted that the above-mentioned implementation is only a preferred implementation of the utility model, and cannot be used to limit the scope of protection of the utility model. Any non-substantial changes and substitutions made by technicians in this field on the basis of the utility model are within the scope of protection required by the utility model.
Claims
1. An ultrasonic nebulizer, comprising a housing (2) having a liquid medicine chamber (1), an ultrasonic generator (3) being installed at the bottom of the liquid medicine chamber (1), and a breathing tube (4) located outside the housing (2), characterized in that: A reflux pipe (5) is obliquely installed between the input end of the breathing tube (4) and the liquid medicine chamber (1), the interior of the reflux pipe (5) is provided with a reflux channel (51), the inner wall of the reflux channel (51) is smooth, and the diameter of the reflux channel (51) gradually decreases from the end of the liquid medicine chamber (1) to the end of the breathing tube (4); A plurality of stopper sheets A (12) and stopper sheets B (13) are obliquely fixedly connected to the inner wall of the reflux channel (51), and the stopper sheets A (12) and the stopper sheets B (13) are arranged in a staggered manner relative to each other.
2. The ultrasonic atomizer according to claim 1, characterized in that: The return pipe (5) comprises an upper connecting portion (52) extending out of the housing (2) and connected to the breathing tube (4), and a lower connecting portion (53) communicating with the drug liquid chamber (1), and an inclined portion (54) is integrally formed between the two connecting portions; A filter core tube (6) is threadedly connected to the upper connection portion (52), and a filter screen A (7) is installed in the bottom opening of the filter core tube (6).
3. The ultrasonic atomizer according to claim 2, characterized in that: The bottom of the filter core tube (6) is in a truncated cone shape, so as to form a filtering space (8) between the bottom of the filter core tube (6) and the inner wall of the upper connecting portion (52); a plurality of through holes (9) are radially penetrated through the bottom of the filter core tube (6), and a filter screen B (10) is fixedly connected to each of the through holes (9).
4. The ultrasonic atomizer according to claim 2, characterized in that: A rod body (11) is fixedly connected to the inner wall of the filter core tube (6), and the rod body (11) is located in the top opening of the filter core tube (6).
5. The ultrasonic atomizer according to any one of claims 1 to 4, characterized in that: The length of the stop sheet B (13) is greater than the length of the stop sheet A (12), and the stop sheet A (12) and the stop sheet B (13) respectively form a stop space (14) with the inner wall of the reflux channel (51), and the opening of the stop space (14) is inclined downward.
6. The ultrasonic atomizer according to claim 2, characterized in that: The included angle between the inclined portion (54) and the vertical plane is between fifteen and thirty degrees.