CN216976214U - Air duct capable of eliminating noise - Google Patents
Air duct capable of eliminating noise Download PDFInfo
- Publication number
- CN216976214U CN216976214U CN202123319898.3U CN202123319898U CN216976214U CN 216976214 U CN216976214 U CN 216976214U CN 202123319898 U CN202123319898 U CN 202123319898U CN 216976214 U CN216976214 U CN 216976214U
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- Prior art keywords
- air duct
- flexible tube
- shell
- flexible pipe
- wall
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Abstract
The utility model belongs to the technical field of medical equipment, and particularly relates to an air duct capable of eliminating noise, which comprises a shell and a flexible pipe, wherein the flexible pipe is arranged in the shell, two ends of the flexible pipe are respectively fixed with two ends of the shell, a cavity is formed between the flexible pipe and the shell, columns with different heights are arranged on the inner side wall of the shell in the cavity in the circumferential direction, and the flexible pipe is attached to the top end of the column during ventilation so that the inner wall of the flexible pipe forms an uneven air duct wall. The utility model can be suitable for noise reduction treatment of different positions of the complete air duct of equipment.
Description
Technical Field
The utility model belongs to the technical field of medical equipment, and particularly relates to an air duct capable of eliminating noise.
Background
When air flow is conveyed in a pipeline, noise is generated due to vibration, internal medium flow friction, collision and disturbance, the existing common silencing technology is basically realized by adopting sound insulation, sound absorption, vibration isolation and other methods, the vibration isolation mode is that a plurality of links are added in a vibration energy transmission path from a vibration source to a related structure, the links can be hard or soft, the mechanical impedance between the vibration source and a receptor can be changed, the coupling loss capacity of a joint part is increased, most of vibration energy is reflected back, and part of vibration energy transmitted by the vibration source is consumed, so that the structure which does not want to generate vibration is not vibrated or the vibration is very small, and the noise generated by the structure is also controlled.
At present, the air inlet of the commercially available ventilation treatment equipment generally has large wind noise, and the experience of a patient using the equipment is greatly influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an air duct capable of reducing noise, which can be suitable for noise reduction treatment of different positions of a complete air duct of equipment.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a can eliminate air vent of noise, the air vent includes casing and flexible tube, arrange the casing in the flexible tube, the both ends of flexible tube are fixed with the both ends of casing respectively, form the cavity between flexible tube and casing, and the casing inside wall in the cavity is at the cylinder that highly varies of circumferencial direction arrangement, and the flexible tube laminating makes the inner wall of flexible tube form unevenness's air duct wall with the top of cylinder during the ventilation.
Preferably, the two ends of the flexible pipe are fixed with the two ends of the shell respectively in a bonding, interference fit or buckling mode.
Preferably, the inner cavity of the flexible tube is in a free-floating state or tends to be closed before being ventilated.
In the utility model, the left side and the right side of the shell are respectively provided with an air inlet and an air outlet, the inner side wall of the shell is provided with columns with different heights in the circumferential direction, the flexible pipe is fixed with the shell at the air inlet and the air outlet, the fixing mode can adopt bonding, interference fit, buckle and other modes, and a cavity in the flexible pipe is in a free suspension state or tends to be in a closed state before ventilation.
The utility model can well eliminate the noise generated when the gas passes through the gas passage, and has simple structure and convenient arrangement.
Drawings
FIG. 1 is a schematic structural view of an airway according to the present invention;
FIG. 2 is a first schematic view of the structure of the airway of the present invention when the airway is not ventilated;
FIG. 3 is a second schematic structural view of the airway of the present invention when not venting;
FIG. 4 is a schematic view of the airway of the present invention during ventilation;
FIG. 5 is a view of the external shape of the air duct of the present invention;
reference numerals:
1. a housing; 2. a flexible tube; 3. a column.
Detailed Description
The utility model is described in further detail below with reference to the figures and the detailed description.
Example 1
As shown in fig. 1-5, an air duct capable of eliminating noise comprises a shell 1 and a flexible pipe 2, the flexible pipe 2 is arranged in the shell 1, two ends of the flexible pipe 2 are respectively fixed with two ends of the shell 1, a cavity is formed between the flexible pipe 2 and the shell 1, columns 3 with different heights are arranged on the inner side wall of the shell in the cavity in the circumferential direction, and the flexible pipe is attached to the top end of the column to enable the inner wall of the flexible pipe to form an uneven air duct wall during ventilation.
The two ends of the flexible pipe are fixed with the two ends of the shell respectively in a bonding, interference fit or buckling mode.
The inner lumen of the flexible tube is in a free-floating state (as shown in fig. 2) or tends to a closed state (as shown in fig. 3) before being vented.
As shown in fig. 4, when the air passage of the flexible tube is in a ventilation state, when the shell is ventilated, the flexible air passage is under the pressure of the action of the circulating gas, after the flexible air passage is opened, the flexible air passage can be supported on the columns with different heights on the inner wall of the shell, at the moment, the flexible air passage can form an uneven air passage wall, and the noise generated during the circulation of the gas is continuously reflected and counteracted by the irregular air passage wall;
the utility model arranges the cylinders with different heights in the circumferential direction of the inner wall of the shell and is used for the supporting function when the flexible body is opened; after the flexible air passage is ventilated, the air passage is influenced by the size of the column body to form an irregular side wall for reflecting noise generated by air circulation.
The flexible pipe can be made of latex materials, has no fixed overall dimension in a natural state, and can refer to a natural placing shape similar to soft cloth in a specific shape. The inner wall of the shell is cylindrical, but the external dimension is fixed.
Conventional technical knowledge in the art can be used for the details which are not described in the present invention.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (3)
1. The utility model provides an air duct that can noise abatement, its characterized in that, the air duct includes casing and flexible tube, arrange the casing in the flexible tube, the both ends of flexible tube are fixed with the both ends of casing respectively, form the cavity between flexible tube and casing, and the casing inside wall in the cavity arranges the unequal cylinder of height in the circumferencial direction, and the flexible tube laminating makes the inner wall of flexible tube form unevenness's air duct wall with the top of cylinder during the ventilation.
2. The air duct of claim 1, wherein the two ends of the flexible tube are fixed to the two ends of the housing by means of adhesive, interference fit, or snap fit.
3. The noise dampening airway of claim 1 wherein the interior lumen of the flexible tube is in a free-air state or tends to be closed before venting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123319898.3U CN216976214U (en) | 2021-12-27 | 2021-12-27 | Air duct capable of eliminating noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123319898.3U CN216976214U (en) | 2021-12-27 | 2021-12-27 | Air duct capable of eliminating noise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216976214U true CN216976214U (en) | 2022-07-15 |
Family
ID=82348290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123319898.3U Active CN216976214U (en) | 2021-12-27 | 2021-12-27 | Air duct capable of eliminating noise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216976214U (en) |
-
2021
- 2021-12-27 CN CN202123319898.3U patent/CN216976214U/en active Active
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