Soft oxygen cabin silencer accessory structure

Abstract

The utility model discloses a soft oxygen cabin silencer accessory structure which comprises an air pipe, a shell and silencing cotton arranged in the shell, the shell is of a cylindrical structure, an air inlet connector is arranged on the side wall of the shell, a plurality of air leakage holes are formed in the shell at equal intervals in the axial direction, one end of the air pipe is connected with an oxygen cabin air inlet, and the other end of the air pipe is connected with the air inlet connector. The silencing cotton is used for absorbing whistling generated by high-speed air inlet, and a flexible silencing cotton nozzle is arranged on the outer side of the air leakage hole so as to further restrain exhaust noise. The shell is detachable, the shell is sleeved with a silencing sleeve, the silencing sleeve comprises a pad body wrapping the shell and a hook-and-loop fastener connecting band avoiding the air leakage hole, and a notch is formed in the position, at the air inlet connector, of the pad body. The accessory structure can effectively reduce noise interference in the air inlet process of the oxygen cabin and improve the use experience, and has the advantages of being reasonable in structure, convenient to install and excellent in noise reduction effect.

Description

Technical Field

[0001] This utility model relates to the field of accessories for hyperbaric oxygen therapy equipment, specifically to a structure of a soft oxygen chamber silencer accessory. Background Technology

[0002] Soft hyperbaric oxygen chambers (also known as foldable or soft-shell hyperbaric oxygen chambers) have been widely used in home healthcare, rehabilitation therapy and sports recovery in recent years due to their lightweight, portability and small space occupation.

[0003] However, as the pressurization device supplies outside air or oxygen into the chamber, the high-speed airflow entering through the air inlet pipes of the flexible chamber generates a noticeable whistling sound due to the small diameter of the trachea inside the chamber and the high gas velocity. This noise interferes with the user's rest and treatment process. It is particularly pronounced during the initial pressurization phase of treatment, often leading users to mistakenly believe the equipment has malfunctioned, thus affecting their user experience.

[0004] Therefore, there is an urgent need to design a soft oxygen chamber silencer accessory structure to meet users' needs for a quiet treatment environment. Utility Model Content

[0005] The purpose of this utility model is to provide a soft oxygen chamber silencer auxiliary structure that can effectively suppress the whistling sound generated by high-speed air entering the chamber, and improve user comfort and equipment operation stability without affecting air intake efficiency.

[0006] The technical solution adopted by this utility model to solve the above problems is: a soft oxygen chamber silencer auxiliary structure, including an air pipe, a shell, and sound-absorbing cotton disposed in the shell. The shell adopts a cylindrical structure design, and its side wall is provided with an air inlet connector and several air vents are opened. The air vents are arranged at equal intervals along the axial direction of the shell. One end of the air pipe is connected to the air inlet in the oxygen chamber, and the other end is connected to the air inlet connector of the shell.

[0007] Preferably, the shell includes a cylindrical body and two sets of covers, which are detachably connected to both ends of the cylindrical body.

[0008] Preferably, the cover is provided with a lifting ring, and a hanging rope is connected between the lifting rings of the two sets of covers, with a hook attached to the hanging rope.

[0009] Preferably, the end of the cover has several sets of limiting protrusions arranged at equal intervals around the circumference, and when the shell is suspended, the two ends of the hanging rope are respectively inserted between two adjacent sets of limiting protrusions on the corresponding cover.

[0010] Preferably, the outer shell is provided with a sound-absorbing sleeve, and the cover is provided with an annular retaining edge, with the sound-absorbing sleeve sandwiched between the annular retaining edges of the two sets of covers.

[0011] Preferably, the sound-absorbing sleeve includes a pad and a connecting strap. The pad is wrapped around the outer perimeter of the cylinder, and the length of the pad is less than the outer perimeter of the cylinder to expose the vent hole. One end of the connecting strap is fixed to the pad, and the other end is glued to the pad by a Velcro structure. The pad has a notch at the air inlet.

[0012] Preferably, a flexible sound-absorbing cotton nozzle is also provided on the outside of the vent hole.

[0013] Preferably, the air intake connector is a pagoda-type connector.

[0014] Compared with the prior art, this utility model has the following advantages and effects:

[0015] This invention utilizes sound-absorbing cotton within a cylindrical shell to treat the high-speed intake airflow before it enters the oxygen chamber, effectively absorbing whistling noise and significantly reducing intake noise. By evenly spaced vent holes on the shell's sidewalls and flexible sound-absorbing cotton nozzles outside these holes, multi-stage diffusion and further noise attenuation are achieved in the exhaust channel. The intake connector employs a pagoda-style structure, adaptable to different sizes of air pipes and offering excellent connection stability. Furthermore, the invention features a detachable shell structure and a hanging rope limiting design, facilitating stable suspension within the chamber and preventing additional vibration noise caused by displacement or shaking. The accompanying sound-absorbing sleeve is secured to the cover via an annular flange, and the outer surface of the sleeve features a Velcro connecting strap with pre-drilled vent holes and an intake notch, further enhancing noise reduction on the outer side of the shell. Attached Figure Description

[0016] Figure 1 This is a perspective view of the structure of a soft oxygen chamber silencer accessory according to an embodiment of this utility model.

[0017] Figure 2 This is a perspective view of the structure of a soft oxygen chamber silencer accessory according to an embodiment of this utility model.

[0018] Figure 3 This is an exploded view of the shell structure of an embodiment of this utility model.

[0019] Figure 4 This is a structural cross-sectional view of the shell of an embodiment of this utility model.

[0020] Figure numbers: 11. Air tube, 12. Shell, 13. Sound-absorbing cotton, 14. Air inlet port, 15. Air inlet connector, 16. Vent hole, 21. Cylinder, 22. Cover, 23. Hanging ring, 24. Hanging rope, 25. Hook, 26. Limiting protrusion, 31. Sound-absorbing sleeve, 32. Annular edge, 33. Pad, 34. Connecting strap, 35. Velcro structure, 36. Notch, 37. Sound-absorbing cotton nozzle, 38. Zipper structure. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0022] Example:

[0023] See Figures 1-4 This embodiment relates to a silencer accessory structure for a soft oxygen chamber, specifically used to suppress the whistling sound generated when external air is input into the soft oxygen chamber through the air pipe 11, thereby improving the acoustic environment inside the chamber and enhancing user comfort. Specifically, it includes the air pipe 11, a housing 12, and sound-absorbing cotton 13 disposed within the housing 12.

[0024] Specifically, in this embodiment, the shell 12 has a cylindrical structure and is a hollow cylinder. The shell 12 is made of soft, transparent, and environmentally friendly TPU material. The sound-absorbing cotton 13 is filled inside the shell 12 and adheres tightly to the inner wall of the shell 12 to absorb airflow noise. One end of the air pipe 11 is connected to the air inlet port 14 of the soft oxygen chamber, and the other end is connected and fixed to the air inlet connector 15 located on the side wall of the shell 12, so that the air pipe 11 is connected to the inside of the shell 12. Several vent holes 16 are equally spaced along the axial direction of the shell 12. The vent holes 16 are used to allow airflow to be discharged from the side wall of the shell 12 and cooperate with the sound-absorbing cotton 13 to reduce noise. When in use, after the external pressurization device is activated, air (or oxygen) is introduced into the shell 12 through the air pipe 11 from the air inlet connector 15. The high-speed airflow impacts the sound-absorbing cotton 13, and the closed-cell structure of the sponge absorbs the high-frequency "whistling" sound. At the same time, the airflow inside the shell 12 is finally discharged into the oxygen chamber through the vent holes 16. In this embodiment, the intake noise is suppressed by setting the sound-absorbing cotton 13, so as to reduce the interference of the user's rest and treatment.

[0025] The housing 12 includes a cylindrical body 21 and two sets of covers 22, which are detachably connected to both ends of the cylindrical body 21. The covers 22 can be connected to the cylindrical body 21 by means of snap-fit, screw connection, or other detachable connection methods. In this embodiment, a screw connection is used (or high-frequency welding technology can be used to weld them into a whole). Specifically, the outer periphery of the covers 22 and the inside of the cylindrical body 21 are respectively provided with mutually connecting and compatible external threads and internal threads.

[0026] The cover 22 is equipped with a lifting ring 23, and a hanging rope 24 is connected between the two sets of lifting rings 23 of the cover 22. The hanging rope 24 is fitted with a hook 25, and the hook 25 is fixed in the middle of the hanging rope 24. After the gas flows through the shell 12, it will vibrate. In actual use, the user hangs the hook 25 on the top of the cabin through the fixing ring reserved in the inner wall of the air chamber to avoid friction noise caused by the air chamber wall or the ground when it vibrates.

[0027] The end of the cover 22 is provided with several sets of limiting protrusions 26 arranged at equal intervals around the circumference. When the shell 12 is suspended, the two ends of the hanging rope 24 are respectively inserted between two adjacent sets of limiting protrusions 26 on the corresponding cover 22, thereby limiting the hanging rope 24 in the suspended state and preventing the shell 12 from swinging along its suspension axis (the line connecting the two sets of cover 22 and the hanging rope 24), thereby improving the stability of the shell 12 when suspended.

[0028] The housing 12 is covered with a sound-absorbing sleeve 31, and the cover 22 is provided with annular baffles 32. The upper and lower opening edges of the sound-absorbing sleeve 31 are respectively snapped or attached between the two sets of annular baffles 32, thereby firmly clamping the sound-absorbing sleeve 31 between the two sets of cover bodies 22, effectively preventing the sound-absorbing sleeve 31 from falling off the housing 12 during use.

[0029] The muffler sleeve 31 includes a pad 33 and a connecting strap 34. The pad 33 wraps around the outer periphery of the cylinder 21, and the length of the pad 33 is less than the outer periphery of the cylinder 21 to ensure that the vent hole 16 is exposed outside the pad 33, ensuring unobstructed exhaust. One end of the connecting strap 34 is fixed to the pad 33, and the other end is glued to the pad 33 via a Velcro structure 35. The connecting strap 34 has the same number of openings as the vent hole 16. When fixed, the openings face the vent hole 16 to expose the vent hole 16 and prevent secondary noise caused by the exhaust airflow colliding with the connecting strap 34. In this embodiment, the pad 33 has a notch 36 at the air inlet connector 15, so that when the muffler sleeve 31 is installed, the notch 36 of the pad 33 can be aligned with the air inlet connector 15 of the housing 12 for installation. At the same time, it can also restrict the rotation of the muffler sleeve 31 around the outer periphery of the cylinder 21, improving the installation stability of the muffler sleeve 31.

[0030] A flexible sound-absorbing nozzle 37 is also provided on the outside of the vent 16. This nozzle 37 is made of a flexible porous material (such as silicone foam or polyurethane microporous foam), and has an overall cylindrical or trumpet-shaped structure. One end is fitted onto the outside of the vent 16 of the shell 12, and the other end faces the interior of the soft oxygen chamber. Its structural design can form a local diffusion cavity and sound-absorbing channel during airflow discharge, thereby further attenuating the mid-to-high frequency noise generated by airflow disturbance.

[0031] The air inlet connector 15 is a pagoda-type connector, which includes multiple stepped conical sections with diameters ranging from small to large, and its outer contour is pagoda-shaped. The pagoda-type connector can be compatible with air inlet pipes 11 of different specifications of soft oxygen chambers through the steps, enhancing its versatility. At the same time, the air inlet connector 15 is equipped with a sealing ring groove, which can form a reliable sealing connection with the end of the air pipe 11.

[0032] In this embodiment, the cylindrical body 21 is provided with a zipper structure 38. The zipper structure 38 can be an invisible (nylon) zipper, which can be set along the length or circumference of the cylindrical body 21. In this embodiment, the zipper structure 38 is set in the middle part of the cylindrical body 21. After it is pulled open, the sound-absorbing cotton 13 inside can be replaced.

[0033] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A soft oxygen chamber silencer accessory structure, comprising an air pipe, a shell, and sound-absorbing cotton disposed within the shell, characterized in that, The shell adopts a cylindrical structure design, with an air inlet connector on its side wall and several vent holes. The vent holes are arranged at equal intervals along the axial direction of the shell. One end of the air pipe is connected to the air inlet in the oxygen chamber, and the other end is connected to the air inlet connector of the shell. The shell includes a cylindrical body and two sets of covers, which are detachably connected to both ends of the cylindrical body. The shell is covered with a sound-absorbing sleeve, and the covers are provided with annular baffles. The sound-absorbing sleeve is sandwiched between the annular baffles of the two sets of covers. Flexible sound-absorbing cotton nozzles are also provided on the outside of the vent holes.

2. The auxiliary structure of a soft oxygen chamber silencer according to claim 1, characterized in that: The cover is equipped with a lifting ring, and a hanging rope is connected between the two sets of lifting rings of the cover. The hanging rope is fitted with a hook.

3. The auxiliary structure of a soft oxygen chamber silencer according to claim 1, characterized in that: The end of the cover has several sets of limiting protrusions arranged at equal intervals around its circumference. When the shell is suspended, the two ends of the hanging rope are respectively inserted between two adjacent sets of limiting protrusions on the corresponding cover.

4. The auxiliary structure of a soft oxygen chamber silencer according to claim 1, characterized in that: The sound-absorbing sleeve includes a pad and a connecting strap. The pad is wrapped around the outer perimeter of the cylinder, and the length of the pad is less than the outer perimeter of the cylinder to expose the vent hole. One end of the connecting strap is fixed to the pad, and the other end is glued to the pad by a Velcro structure. The pad has a notch at the air inlet.

5. The auxiliary structure of a soft oxygen chamber silencer according to claim 1, characterized in that: The air intake connector is a pagoda-type connector.

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