Atomized gas recovery device

Abstract

The utility model provides an atomized gas recovery device, which comprises a shell and a filter membrane in the shell, the shell comprises a rear shell and a front shell, and the atomized gas recovery device is characterized in that the front shell comprises a front shell cover and a suction component, the front shell cover is provided with a front shell positioning port, the rear shell is provided with a gas outlet and a rear shell mounting positioning port, the filter membrane is an annular sheet, and the suction component is provided with a gas inlet and a gas outlet. And the suction component penetrates through the front shell positioning opening, the filtering membrane and the rear shell mounting positioning opening. An expiration opening with an expiration one-way valve is formed in the middle of a pipe body of the inhalation component and located in the inner space of the shell, a mist inlet in one end of the pipe body of the inhalation component is used for being connected with a mist suction opening of an atomization device, and a mist suction opening in the other end of the pipe body of the inhalation component is connected with an inhalation mask insertion hole in an inserted mode. And the filter membrane is sleeved on the inhalation part between the expiration port and the mist inlet, so that the expired gas pushes the expiration one-way valve after going out from the expiration port, and the expired gas overflows from the gas outlet on the rear shell after being filtered by the filter membrane. And the structure design is reasonable, simple and compact, the aerosol transmission efficiency is high, recovery of exhaled gas is facilitated, and operation and use are convenient.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology and relates to the improvement of medical nebulization technology, specifically a nebulized gas recovery device. Background Technology

[0002] Nebulizers are important devices for the treatment of respiratory diseases and are also widely used in vaccination and the treatment of various non-respiratory diseases, with a broad market prospect.

[0003] Regarding the working principle of nebulizers: Nebulizers convert liquid medications into tiny aerosol particles through specific methods for patient inhalation. Common compressor nebulizers use the high-speed movement of compressed gas to impact and break down the medication into tiny aerosol particles; ultrasonic nebulizers use ultrasonic energy to cause the liquid medication to vibrate violently, breaking it into countless fine aerosol particles; vibrating sieve nebulizers use ultrasonic vibration on a diaphragm to force the liquid medication through tiny sieve holes of a fixed diameter, releasing it as fine particles. In this process, a large amount of aerosol is inevitably generated.

[0004] In terms of applications, nebulizers are commonly used to treat various upper and lower respiratory system diseases, such as asthma, chronic obstructive pulmonary disease, pneumonia, bronchitis, and respiratory infections. It is an important and effective treatment method for respiratory diseases, widely used in hospitals, clinics, and homes. Nebulization therapy has a broad range of applications, including the nebulization of antibiotics for the treatment of acute and chronic respiratory infections. Nebulization allows for localized drug delivery, resulting in rapid efficacy and reducing the metabolic burden on the liver and kidneys.

[0005] With the increasing popularity of nebulizer therapy, public awareness of the risks of aerosol-transmitted diseases has risen. The primary concern is the health hazards, especially during respiratory infectious disease outbreaks when nebulizer use is more frequent, further increasing the risk of aerosol-transmitted diseases. If aerosols contain pathogens such as bacteria and viruses, inhalation by individuals other than patients can lead to infection, posing a serious threat to the health of those around them. If antibiotic aerosols spill into the environment, they can cause bacteria to develop drug resistance, increasing the difficulty of treatment. Aerosol spills can cause widespread transmission, particularly in poorly ventilated indoor environments such as hospitals or clinics. When a patient receives nebulizer treatment, spilled aerosols can easily accumulate in the local space, significantly increasing the likelihood of infection for medical staff, other patients, and even healthy individuals. This can also lead to increased drug resistance in pathogens in the surrounding environment. This risk is particularly pronounced in areas such as respiratory wards.

[0006] In recent years, with increasing emphasis on medical and health safety, relevant departments have formulated a series of regulations and standards requiring medical institutions to take effective measures to prevent aerosol spillage and spread when using equipment such as nebulizers, in order to ensure the safety of medical staff and patients. This has also spurred the development and application of aerosol spill prevention technology for nebulizers.

[0007] Chinese Patent (Application No.: 202322148299.2) discloses an atomization recovery device and an atomizing mouthpiece. The atomization recovery device includes a rear shell, a front shell, and a filter membrane fixed between them. The front shell has an air outlet, and the rear shell has an air inlet. The end of the air inlet pipe connected to the air inlet is a quick-connect interface I, used for detachable connection to a quick-connect interface II on the atomizing mouthpiece. The atomizing mouthpiece includes an inhalation port, an inlet port, an exhalation inhalation port, and an exhalation one-way valve. The exhalation inhalation port of the atomizing mouthpiece has an internal exhalation one-way valve, and an outwardly extending quick-connect interface II is provided at the exhalation inhalation port for detachable connection to the quick-connect interface I on the atomization recovery device. This patent can filter the gas exhaled from the atomizing mouthpiece, preventing the spread of viruses and bacteria. The filter and aerosol inhalation device in this patent are designed separately and need to be combined through a three-way tube to form an aerosol spill prevention device. The structure is cumbersome, the aerosol transmission efficiency is low, and it is inconvenient to use. Moreover, the design of the three-way tube makes it easy for exhaled gas to generate gas resistance at the connection of the three-way tube, which can easily condense into droplets and is not conducive to the recovery of exhaled gas.

[0008] Therefore, there is a need to design an atomized gas recovery device that can prevent aerosol spillage, has a reasonable, simple, and compact structure, high aerosol transmission efficiency, facilitates the recovery of exhaled gas, and is easy to operate. This is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0009] To address the aforementioned problems in the existing technology, this utility model provides an atomizing gas recovery device and an atomizing device, which has a reasonable, simple, and compact structure, high aerosol transmission efficiency, facilitates the recovery of exhaled gas, and is convenient to operate and use.

[0010] The objective of this utility model is achieved through the following technical solution:

[0011] A gas atomizing recovery device includes a housing and a filter membrane within the housing. The housing comprises a rear shell and a front shell, with the filter membrane sandwiched between the front and rear shells. The front shell includes a front cover and an intake component. The front cover has a front shell positioning port, and the rear shell has an outlet and a rear shell mounting positioning port. The filter membrane is an annular sheet. The intake component is tubular, with its tube extending through the front shell positioning port, the middle of the filter membrane, and the rear shell mounting positioning port. The tube body is provided with an exhalation port with an exhalation one-way valve in the middle, and the exhalation port is located in the internal space of the housing. One end of the tube body of the inhalation component is a mist inlet for connecting with the mist inlet of the nebulizer. The other end of the tube body of the inhalation component is a mist inlet. The mist inlet is inserted into the insertion hole in the middle of an inhalation mask. The filter membrane is fitted on the inhalation component between the exhalation port and the mist inlet, so that the exhaled gas pushes open the exhalation one-way valve after coming out of the exhalation port, and overflows from the air outlet on the rear housing after being filtered by the filter membrane.

[0012] Improvements to the above technical solution: One end of the mist inlet of the inhalation component is a round tube, the surface of the inhalation mask is closed, the insertion hole in the middle of the inhalation mask is a round hole, and one end of the mist inlet of the inhalation component is inserted into the round hole in the middle of the inhalation mask to form a tight fit.

[0013] Further improvements to the above technical solution: The tube of the inhalation component is also provided with a one-way valve positioning port, and the one-way exhalation valve is provided with a valve plate and a positioning pin. The positioning pin is passed through the one-way valve positioning port to realize the relative installation and fixation of the one-way exhalation valve and the inhalation component. The valve plate is placed outside the exhalation port and completely covers the exhalation port. The one-way exhalation valve is made of soft elastic material, and the gas exhaled from the inhalation component can only be exhaled from the exhalation port in one direction.

[0014] Further improvements to the above technical solution: The inhalation component is provided with a first protrusion, which is connected to the front shell positioning port, so that the inhalation component is connected to the front shell cover. The front part of the front shell cover is frustum-shaped, and the front end of the frustum-shaped front shell cover is the front shell positioning port. The rear end of the frustum-shaped front shell cover is a raised annular outer edge, and a front shell buckle is provided on the annular outer edge. The rear shell is annular in shape, and a rear shell buckle is provided on the outer edge of the rear shell. The front shell and the rear shell are rotated and fastened by the front shell buckle and the rear shell buckle, and the filter membrane is clamped and fixed. The filter membrane is annular in shape, including a circular inner diameter and an outer diameter, and is used to filter particulate matter, aerosols, bacteria and viruses.

[0015] An improvement to the above technical solution: A front housing positioning buckle is provided on the edge of the front housing positioning port, and an inhalation component positioning buckle is provided on the first protrusion of the inhalation component. The inhalation component positioning buckle and the front housing positioning buckle are rotated and engaged, realizing the detachable installation and fixation of the inhalation component and the front housing. An extension pipe with a side opening extends from the front housing positioning port near the inside of the front housing. The tube of the inhalation component passes through the front housing positioning port into the extension pipe. In the fixed engagement state of the inhalation component and the front housing, the exhalation port on the tube of the inhalation component corresponds to the side opening, so that the exhaled gas is exhaled from the exhalation port and discharged into the inside of the front housing through the side opening, filtered by the filter membrane, and discharged from the air outlet of the rear housing. An inner protrusion is provided on the other end of the extension pipe away from the front housing positioning port, providing a supporting surface for supporting the inner diameter edge of the filter membrane.

[0016] Another improvement to the above technical solution: the suction component and the front cover are integral structures, the positioning port of the front cover and the first protrusion on the suction component are integrally connected by ultrasonic welding or adhesive bonding, and the suction component is provided with a second protrusion to provide a support surface for supporting the inner diameter edge of the filter membrane.

[0017] Further improvements to the above technical solution: The outer edge of the front shell has a front shell filter membrane support surface to support the outer diameter edge of the filter membrane; the inner ring of the rear shell is a rear shell mounting and positioning port, the outer edge of the rear shell has a rear shell outer edge filter membrane support surface to support the outer diameter of the filter membrane, and the edge of the rear shell mounting and positioning port has a rear shell center filter membrane support surface to support the inner diameter of the filter membrane; the filter membrane is clamped between the front shell and the rear shell, and the inner diameter edge and outer diameter edge of the filter membrane form a tight sealing structure under the action of the rear shell center filter membrane support surface and the rear shell outer edge filter membrane support surface, respectively.

[0018] Further improvement to the above technical solution: The inhalation component is equipped with an adapter tube, one end of which is inserted into the mist inlet of the inhalation component, and the outer diameter of the other end of the adapter tube matches the insertion hole in the middle of the inhalation mask and is inserted into the insertion hole in the middle of the inhalation mask.

[0019] Compared with the prior art, this utility model has the following advantages and positive effects:

[0020] 1. The atomized gas recovery device of this utility model effectively prevents the leakage of drugs or gases by installing a filter membrane between the front and rear shells and clamping it in a rotating manner, thereby improving the accuracy and safety of drug delivery and preventing exhaled aerosols from spreading into the surrounding environment. Compared with existing technologies, this design is more reliable and can effectively avoid drug waste and aerosol transmission caused by leakage.

[0021] 2. This utility model has a simple and compact structure and is easy to operate: The atomized gas recovery device of this utility model combines aerosol input and exhaled filtration functions, achieving an integrated design with high aerosol transmission efficiency, which is beneficial for the recovery of exhaled gas. In the prior art, the filtration device and the aerosol inhalation device are designed separately, requiring a three-way tube to form an aerosol spill prevention device, which is cumbersome, has low aerosol transmission efficiency, and is inconvenient to use; moreover, the three-way tube design makes it easy for exhaled gas to generate gas resistance at the connection of the three-way tube, which easily condenses into droplets, which is not conducive to the recovery of exhaled gas.

[0022] 3. Robust Fastening Method of This Utility Model: The atomizing gas recovery device of this utility model adopts a method of fastening the front and rear shells by rotating and snapping together. Compared with the one-time fastening method of the prior art, the method of this utility model is simpler, facilitates the replacement of the filter membrane, and ensures a firm assembly that is not prone to loosening, thereby guaranteeing the fixing effect of the filter membrane. This design makes the atomizing gas recovery device more stable during use.

[0023] 4. Excellent filtration effect of this invention: The built-in filter membrane of the atomizing gas recovery device of this invention is circular in shape and adopts a ring-shaped design, which can filter various particles, aerosols, bacteria and viruses smaller than 1μm. The filtration effect is significant and the installation and replacement are convenient. This design makes it safer during use and effectively reduces the risk of infection.

[0024] 5. The humanized design of this utility model: The nebulized gas recovery device of this utility model is equipped with a one-way valve positioning port and an exhalation port. The one-way valve positioning port is equipped with an exhalation one-way valve, which is made of soft and elastic material, making the patient more comfortable during use and reducing breathing resistance.

[0025] 6. This utility model allows for direct connection between the inhalation component and the inhalation mask, or connection via an adapter, making it flexible, convenient, and effective. Attached Figure Description

[0026] Figure 1 This is an exploded assembly diagram of Embodiment 1 of the atomized gas recovery device of this utility model;

[0027] Figure 2 This is an exploded view of the assembly on the other side of Embodiment 1 of the atomized gas recovery device of this utility model;

[0028] Figure 3 This is a schematic diagram of the atomized gas recovery device body and the inhalation mask before assembly in Embodiment 1 of this utility model;

[0029] Figure 4This is a schematic diagram of the atomized gas recovery device body and the inhalation mask assembled in Embodiment 1 of this utility model;

[0030] Figure 5 This is a perspective view of the front cover and the inhalation component before assembly in Embodiment 1 of the atomized gas recovery device of this utility model;

[0031] Figure 6 This is a schematic diagram of the inhalation component before the expiratory one-way valve is installed in Embodiment 1 of the atomized gas recovery device of this utility model;

[0032] Figure 7 This is an exploded assembly diagram of the main body of the atomized gas recovery device in Embodiment 1 of this utility model;

[0033] Figure 8 This is a schematic diagram of the main body of the atomized gas recovery device after assembly in Embodiment 1 of this utility model;

[0034] Figure 9 This is an exploded assembly diagram of an embodiment 1 of the atomizing gas recovery device of this utility model, with the addition of a transfer pipe;

[0035] Figure 10 This is a perspective view of the front cover and the inhalation component before assembly in Embodiment 2 of the atomized gas recovery device of this utility model;

[0036] Figure 11 This is a perspective view of the front cover and the suction component assembled in Embodiment 2 of the atomized gas recovery device of this utility model;

[0037] Figure 12 This is a perspective view of the other side of the front cover and the inhalation component after assembly in Embodiment 2 of the present invention for an atomized gas recovery device;

[0038] Figure 13 This is a perspective view of the main body of the atomizing gas recovery device of this utility model after it is connected to the atomizer;

[0039] Figure 14 This is a partial cross-sectional view of the main body of the atomizing gas recovery device of this utility model after it is connected to the atomizer;

[0040] Figure 15 This is a perspective view of the entire atomizing gas recovery device of this utility model after the atomizer is connected.

[0041] The diagram is labeled as follows: 1. Medicine cup; 2. Spacer; 3. Shell; 3.1. Front shell cover; 3.2. Inhalation component; 3.3. Rear shell; 3.4. Rear shell latch; 3.5. Front shell latch; 3.6. Heat-fused rib; 3.7. Air outlet; 3.8. Front shell filter membrane support surface; 3.9. Rear shell outer edge filter membrane support surface; 3.11. One-way exhalation valve; 3.12. First boss; 3.13. Second boss; 3. 14. Mist inlet; 3.15. Exhalation port; 3.16. One-way valve positioning port; 3.17. Rear shell mounting positioning port; 3.18. Rear shell center filter membrane support surface; 3.19. Inhalation component positioning buckle; 3.20. Front shell positioning buckle; 3.21. Positioning surface; 3.22. Front shell positioning port; 3.23. Mist inlet; 3.24. Adapter pipe; 4. Filter membrane; 5. Inhalation mask; 5.1. Insertion hole. Detailed Implementation

[0042] The present invention will be further described in detail below with reference to the accompanying drawings:

[0043] See Figures 1-9 Embodiment 1 of the atomized gas recovery device of this utility model includes a housing 3 and a filter membrane 4 within the housing 3. The housing 3 includes a rear shell 3.3 and a front shell, with the filter membrane 4 sandwiched between the front shell and the rear shell 3.3. The front shell includes a front shell cover 3.1 and an inhalation component 3.2. The front shell cover 3.1 has a front shell positioning port 3.22, and the rear shell 3.3 has an outlet port 3.7 and a rear shell mounting positioning port 3.17. The filter membrane 4 is an annular sheet, and the inhalation component 3.2 is tubular in shape. The tube of the inhalation component 3.2 passes through the front shell positioning port 3.22, the middle of the filter membrane 4, and the rear shell mounting positioning port 3.17. An exhalation port 3.15 with an exhalation one-way valve 3.11 is provided in the middle of the tube of the inhalation component 3.2, and the exhalation port 3.15 is located inside the housing 3. One end of the tube of the inhalation component 3.2 is a mist inlet 3.23, which is inserted into the insertion hole 5.1 in the middle of the inhalation mask 5. The other end of the tube of the inhalation component 3.2 is a mist inlet 3.14, which is used to connect to the mist inlet of the nebulizer. The filter membrane 4 is fitted onto the inhalation component 3.2 between the exhalation port 3.15 and the mist inlet 3.14, so that the exhaled gas pushes open the one-way valve 3.11 after coming out of the exhalation port 3.15, and after being filtered by the filter membrane 4, it overflows from the outlet 3.7 on the rear shell 3.3.

[0044] Preferably, one end of the inhalation port of the aforementioned inhalation component is a round tube, and the insertion hole 5.1 in the middle of the inhalation mask 5 is a round hole. The inhalation port of the inhalation component is inserted into the round hole in the middle of the inhalation mask to form a tight fit. The surface of the inhalation mask 5 is closed. Apart from the face-contacting surface, the inhalation mask 5 has only one inlet, namely the insertion hole 5.1. The inhalation mask 5 has an inner lip and an outer lip, which can fit very closely to the face, preventing aerosol from leaking out between the inhalation mask and the face. Both inhalation and exhalation of the user are induced by the air flowing through the insertion hole 5.1.

[0045] Specifically: The inhalation component 3.2 is further provided with a one-way valve positioning port 3.16 on its tube body. The exhalation one-way valve 3.11 is provided with a valve plate and a positioning pin. The positioning pin is passed through the one-way valve positioning port 3.16 to achieve relative installation and fixation of the exhalation one-way valve 3.11 and the inhalation component 3.2. The valve plate is placed outside the exhalation port 3.15 and completely covers the exhalation port 3.15. The exhalation one-way valve 3.11 is made of soft elastic material, and the gas exhaled from the inhalation component 3.2 can only be exhaled unidirectionally from the exhalation port 3.15. The rear shell 3.3 is circular in shape, and a rear shell mounting positioning port 3.17 is provided in the middle of the rear shell 3.3. Several smaller diameter air outlets 3.7 are evenly arranged around the rear shell mounting positioning port 3.17.

[0046] Furthermore, a first protrusion 3.12 is provided on the suction component 3.2, which connects to the front shell positioning port 3.22, connecting the suction component 3.2 to the front shell cover 3.1. The front part of the aforementioned front shell cover 3.1 is frustum-shaped, with the front shell positioning port 3.22 at the front end of the frustum-shaped front shell cover 3.1, where the diameter is smallest. The rear end of the frustum-shaped front shell cover 3.1 is a raised annular outer edge, on which a front shell buckle 3.5 is provided. The aforementioned rear shell 3.3 is annular, with a rear shell buckle 3.4 provided on its outer edge. The front shell and rear shell 3.3 are rotated and fastened together by the front shell buckle 3.5 and the rear shell buckle 3.4, clamping and fixing the filter membrane 4. The filter membrane 4 is annular in shape, including a circular inner diameter and an outer diameter, and is used to filter particles smaller than 1μm, aerosols, bacteria, and viruses.

[0047] Furthermore, the suction component 3.2 and the front housing 3.1 are an integrated structure. The front housing positioning port 3.22 and the first boss 3.12 on the suction component 3.2 are integrally connected, using ultrasonic welding or adhesive bonding. When using ultrasonic welding, a heat-melting rib 3.6 can be provided around the front housing positioning port 3.22, serving as the heat-melting medium during ultrasonic welding to weld the two components. A second boss 3.13 is provided on the suction component 3.2, providing a supporting surface for supporting the inner diameter edge of the filter membrane 4.

[0048] Furthermore, the outer edge of the aforementioned front shell has a front shell filter membrane support surface 3.8 to support the outer diameter edge of the filter membrane 4; the inner ring of the rear shell 3.3 is a rear shell mounting positioning port 3.17, the outer edge of the rear shell 3.3 has a rear shell outer edge filter membrane support surface 3.9 to support the outer diameter of the filter membrane 4, and the edge of the rear shell mounting positioning port 3.17 has a rear shell center filter membrane support surface 3.18 to support the inner diameter of the filter membrane 4; the filter membrane 4 is clamped between the front shell and the rear shell 3.3, and the inner diameter edge and outer diameter edge of the filter membrane 4 form a tight sealing structure under the action of the rear shell center filter membrane support surface 3.18 and the rear shell outer edge filter membrane support surface 3.9, respectively.

[0049] See Figure 9 This invention can also provide an adapter tube 3.24 for the inhalation component 3.2. One end of the adapter tube 3.24 is inserted into one end of the mist inlet 3.23 of the inhalation component 3.2, and the outer diameter of the other end of the adapter tube 3.24 matches the insertion hole 5.1 in the middle of the inhalation mask 5 and is inserted into the insertion hole 5.1 in the middle of the inhalation mask 5. Multiple adapter tubes 3.24 can be provided, and their two ends can also have different diameters, so as to be used with insertion holes 5.1 of different diameters in the middle of the inhalation mask 5.

[0050] See Figures 10-12 This invention provides a second embodiment of an atomized gas recovery device. Embodiment 2 has the same basic structure as Embodiment 1, except that the fixing connection method between the inhalation component 3.2 and the front cover 3.1 is different. The specific structure is as follows:

[0051] In Example 2, the suction component 3.2 and the front cover 3.1 are connected in a detachable manner: a front cover positioning buckle 3.20 is provided on the edge of the front cover positioning port 3.22, and a suction component positioning buckle 3.19 is provided on the first boss 3.12 of the suction component 3.2. The suction component positioning buckle 3.19 and the front cover positioning buckle 3.20 are rotated and engaged, so as to realize the detachable installation and fixation of the suction component 3.2 and the front cover 3.1. In the fixed state, the first boss 3.12 is in contact with the positioning surface 3.21 on the front cover positioning port 3.22, which plays a sealing role.

[0052] An extension pipe with a side opening extends from the front housing positioning port 3.22 near the interior of the front housing cover 3.1. The tube of the inhalation component 3.2 passes through the front housing positioning port 3.22 into the extension pipe. With the front housing cover 3.1 of the inhalation component 3.2 in a fixed engaged state, the exhalation port 3.15 on the tube of the inhalation component 3.2 corresponds to the side opening, allowing exhaled air to exit from the exhalation port 3.15 and exit into the interior of the front housing cover 3.1 through the side opening. After being filtered by the filter membrane 4, the air is discharged from the outlet 3.7 of the rear housing 3.3. An inner boss is provided at the other end of the extension pipe away from the front housing positioning port 3.22, providing a supporting surface for supporting the inner diameter edge of the filter membrane 4.

[0053] The front shell has a front shell filter membrane support surface 3.8 on its outer edge to support the outer diameter edge of the filter membrane 4. The rear shell 3.3 is annular in shape. The inner ring of the rear shell 3.3 is the rear shell mounting and positioning port 3.17. The outer edge of the rear shell 3.3 has a rear shell outer edge filter membrane support surface 3.9 to support the outer diameter of the filter membrane 4. The rear shell mounting and positioning port edge 3.17 has a rear shell center filter membrane support surface 3.18 to support the inner diameter of the filter membrane 4. The filter membrane 4 is clamped between the front shell and the rear shell 3.3. The inner diameter edge and outer diameter edge of the filter membrane 4 form a tight sealing structure under the action of the rear shell center filter membrane support surface 3.18 and the rear shell outer edge filter membrane support surface 3.9, respectively.

[0054] See Figure 13 , Figure 14 The atomized gas recovery device of this utility model (inhalation mask 5 not shown) is used in conjunction with a nebulizer. The nebulizer includes an atomizing unit, a medicine cup 1, and a mist storage tank 2. The medicine cup 1 is provided with a mist outlet, which is connected to the mist inlet 3.14 of the inhalation component 3.2. After the liquid medicine in the medicine cup 1 is atomized, it generates an aerosol in the mist storage tank 2, and then enters the inhalation component 3.2 through the mist inlet 3.14 and is inhaled by the user. The user's exhaled air passes through the inhalation component 3.2, and is then filtered by the atomized gas recovery device before being discharged into the air.

[0055] See Figure 15 After the entire atomizing gas recovery device of this utility model is connected to the atomizer, the user will experience better results when wearing the inhalation mask 5.

[0056] Of course, the above description is not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model are also within the protection scope of the present utility model.

Claims

1. A device for recovering atomized gas, comprising a housing and a filter membrane therein, the housing comprising a rear shell and a front shell, the filter membrane being sandwiched between the front shell and the rear shell, characterized in that, The front shell includes a front cover and an inhalation component. The front cover has a front shell positioning port, and the rear shell has an air outlet and a rear shell mounting positioning port. The filter membrane is an annular sheet. The inhalation component is tubular in shape, with its tube extending through the front shell positioning port, the middle of the filter membrane, and the rear shell mounting positioning port. The middle of the tube of the inhalation component has an exhalation port with a one-way valve, and the exhalation port is located inside the shell. One end of the tube of the inhalation component is a mist inlet for connecting to the mist inlet of the nebulizer, and the other end is a mist inlet. The mist inlet is inserted into a hole in the middle of an inhalation mask. The filter membrane is fitted onto the inhalation component between the exhalation port and the mist inlet, so that the exhaled gas pushes open the one-way valve after exiting the exhalation port, is filtered by the filter membrane, and overflows from the air outlet on the rear shell.

2. The atomizing gas recovery device according to claim 1, characterized in that, The inhalation component has a round tube at one end of its mist inlet, the surface of the inhalation mask is closed, and the insertion hole in the middle of the inhalation mask is a round hole. The mist inlet of the inhalation component is inserted into the round hole in the middle of the inhalation mask to form a tight fit.

3. The atomizing gas recovery device according to claim 1 or 2, characterized in that, The tube of the inhalation component is also provided with a one-way valve positioning port. The one-way exhalation valve is provided with a valve plate and a positioning pin. The positioning pin is passed through the one-way valve positioning port to realize the relative installation and fixation of the one-way exhalation valve and the inhalation component. The valve plate is placed outside the exhalation port and completely covers the exhalation port. The one-way exhalation valve is made of soft elastic material. The gas exhaled from the inhalation component can only be exhaled from the exhalation port in one direction.

4. The atomizing gas recovery device according to claim 1 or 2, characterized in that, The inhalation component is provided with a first protrusion, which is connected to the front shell positioning port, so that the inhalation component is connected to the front shell cover. The front part of the front shell cover is frustum-shaped, and the front end of the frustum-shaped front shell cover is the front shell positioning port. The rear end of the frustum-shaped front shell cover is a raised annular outer edge, and a front shell buckle is provided on the annular outer edge. The rear shell is annular in shape, and a rear shell buckle is provided on the outer edge of the rear shell. The front shell and the rear shell are rotated and locked together by the front shell buckle and the rear shell buckle, and the filter membrane is clamped and fixed. The filter membrane is annular in shape, including a circular inner diameter and an outer diameter, and is used to filter particulate matter, aerosols, bacteria and viruses.

5. The atomizing gas recovery device according to claim 4, characterized in that, The front housing positioning port has a front housing positioning buckle on its edge, and the first protrusion of the inhalation component has an inhalation component positioning buckle. The inhalation component positioning buckle and the front housing positioning buckle are rotated and engaged, realizing the detachable installation and fixation of the inhalation component and the front housing. An extension pipe with a side opening extends from the front housing positioning port near the inside of the front housing. The tube of the inhalation component passes through the front housing positioning port into the extension pipe. In the fixed engagement state of the inhalation component and the front housing, the exhalation port on the tube of the inhalation component corresponds to the side opening, so that the exhaled air is exhaled from the exhalation port and discharged into the inside of the front housing through the side opening. After being filtered by the filter membrane, it is discharged from the air outlet of the rear housing. The other end of the extension pipe away from the front housing positioning port has an inner protrusion, which provides a support surface for supporting the inner diameter edge of the filter membrane.

6. The atomizing gas recovery device according to claim 4, characterized in that, The suction component and the front cover are integral structures. The positioning port of the front cover and the first protrusion on the suction component are integrally connected by ultrasonic welding or adhesive bonding. The suction component is provided with a second protrusion, which provides a support surface for supporting the inner diameter edge of the filter membrane.

7. The atomizing gas recovery device according to claim 3, characterized in that, The outer edge of the front shell has a front shell filter membrane support surface to support the outer diameter edge of the filter membrane; the inner ring of the rear shell is a rear shell mounting and positioning port, and the outer edge of the rear shell has a rear shell outer edge filter membrane support surface to support the outer diameter of the filter membrane. The edge of the rear shell mounting and positioning port has a rear shell center filter membrane support surface to support the inner diameter of the filter membrane; the filter membrane is clamped between the front shell and the rear shell, and the inner diameter edge and outer diameter edge of the filter membrane form a tight sealing structure under the action of the rear shell center filter membrane support surface and the rear shell outer edge filter membrane support surface, respectively.

8. The atomizing gas recovery device according to claim 5 or 6, characterized in that, The outer edge of the front shell has a front shell filter membrane support surface to support the outer diameter edge of the filter membrane; the inner ring of the rear shell is a rear shell mounting and positioning port, and the outer edge of the rear shell has a rear shell outer edge filter membrane support surface to support the outer diameter of the filter membrane. The edge of the rear shell mounting and positioning port has a rear shell center filter membrane support surface to support the inner diameter of the filter membrane; the filter membrane is clamped between the front shell and the rear shell, and the inner diameter edge and outer diameter edge of the filter membrane form a tight sealing structure under the action of the rear shell center filter membrane support surface and the rear shell outer edge filter membrane support surface, respectively.

9. The atomizing gas recovery device according to claim 1 or 2, characterized in that, The inhalation component is equipped with an adapter tube. One end of the adapter tube is inserted into the mist inlet of the inhalation component, and the outer diameter of the other end of the adapter tube matches the insertion hole in the middle of the inhalation mask and is inserted into the insertion hole in the middle of the inhalation mask.

10. The atomizing gas recovery device according to claim 3, characterized in that, The inhalation component is equipped with an adapter tube. One end of the adapter tube is inserted into the mist inlet of the inhalation component, and the outer diameter of the other end of the adapter tube matches the insertion hole in the middle of the inhalation mask and is inserted into the insertion hole in the middle of the inhalation mask.

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