CN212479715U - Silencing device - Google Patents
Silencing device Download PDFInfo
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- CN212479715U CN212479715U CN202021081702.4U CN202021081702U CN212479715U CN 212479715 U CN212479715 U CN 212479715U CN 202021081702 U CN202021081702 U CN 202021081702U CN 212479715 U CN212479715 U CN 212479715U
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- blower
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Abstract
The utility model discloses a silencing device, which comprises an air duct module, an air blower and a silencing module; the air channel module comprises a cavity, an air inlet end and an air outlet end are arranged on the cavity, the air blower is installed in the cavity of the air channel module, an air outlet of the air blower is connected with the noise reduction module, one or more cavities are arranged in the noise reduction module, and the cross section of a pipeline of each cavity is larger than that of the air outlet of the air blower. When gas enters the silencing module, sound waves enter the silencing module from the same direction, sudden expansion of the section of the pipeline causes sudden change of sound impedance inside the channel, and sudden change of the propagation direction of the sound waves causes reflection and interference phenomena in the cavity, so that the aim of silencing is fulfilled.
Description
Technical Field
The present invention relates to the field of medical devices, and more particularly to a silencer device for use on a continuous positive airway pressure device, the use of which in a continuous positive airway pressure therapy apparatus is described herein, but it is to be understood that the features of the present invention will include use in other fields.
Background
A cpap treatment apparatus generally includes a blower which rotates at a high speed by a blower blade therein to generate a negative pressure therein. External air is continuously supplemented through the air inlet, and the air enters the continuous positive airway pressure ventilation treatment equipment from the air inlet, then passes through a section of airway, reaches the chamber where the blower is located, and is directly input to the patient end through the humidification tank or the blower. The noise generated when the cpap treatment apparatus is operated is mainly generated by the above 2 reasons: the broadband noise that air-blower self produced when the work to and the wind noise that the air produced through the wind channel.
Because the continuous positive airway pressure treatment equipment is used mostly at night, if continuous high decibel noise exists, the sleep quality of a user can be influenced. Therefore, it is desirable to design a silencing device to improve the user experience.
Disclosure of Invention
To the technical problem, the utility model relates to a silencing device for last positive airway pressure ventilation treatment facility.
The utility model adopts the technical proposal that:
a silencing device mainly comprises an air duct module, a blower and a silencing module.
The air channel module comprises an air channel main body which is a cavity, an air inlet end and an air outlet end are arranged on the air channel main body, the air blower is installed in the air channel main body, an air outlet of the air blower is connected with the silencing module, one or more chambers are arranged in the silencing module, and the cross section of the pipeline of each chamber is larger than that of the air outlet of the air blower.
Further, the chambers of the sound attenuating module are separated by a partition with openings.
Furthermore, the silencing module is assembled inside the humidifying tank, and an air outlet of the silencing module is communicated into the humidifying tank.
Further, an air outlet of the humidifying tank is arranged on an upper cover of the humidifying tank.
Furthermore, one end of the air outlet end of the air duct module is connected with an air outlet of the air blower, and the other end of the air outlet end of the air duct module is connected with an air inlet of the silencing module.
As a preferred mode, the air blower and the silencing module are both arranged in the air duct main body, and the air outlet of the silencing module is arranged at the air outlet end of the air duct module.
Furthermore, in the above silencing device, the air outlet of the blower and the air inlet of the silencing module are sealed by a silica gel ring.
When gas enters the silencing module, sound waves enter the silencing module from the same direction, sudden expansion of the section of the pipeline causes sudden change of sound impedance inside the channel, and sudden change of the propagation direction of the sound waves causes reflection and interference phenomena in the cavity, so that the aim of silencing is fulfilled.
The utility model discloses following beneficial effect has: the utility model discloses can reduce the noise that produces in the treatment facility working process of lasting positive airway pressure, improve user experience.
Drawings
Fig. 1 is an assembly view of a silencing module and an air duct module according to an embodiment of the present invention.
Fig. 2 is an exploded view of the assembly of the noise reduction module and the air duct module according to the embodiment of the present invention.
Fig. 3 is a sectional view of an assembly of a noise reduction module and an air duct module according to an embodiment of the present invention.
Fig. 4 is an assembly view of the silencing module disposed inside the humidification tank according to the embodiment of the present invention.
Fig. 5 is an exploded view of the assembly of the silencing module disposed inside the humidification tank according to the embodiment of the present invention.
Fig. 6 is a sectional view of the assembly of the silencing module disposed inside the humidification tank according to the embodiment of the present invention.
Fig. 7 is an assembly view of the silencing module disposed inside the air duct module according to the embodiment of the present invention.
Fig. 8 is an exploded view of the assembly of the noise reduction module disposed inside the air duct module according to the embodiment of the present invention.
Fig. 9 is a sectional view of the assembly of the noise reduction module disposed inside the air duct module according to the embodiment of the present invention.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following embodiments and accompanying drawings.
Example 1: fig. 1 shows an assembly view of the air duct module and the silencer module 3, and fig. 2 shows an exploded view of the air duct module and the silencer module 3.
The air channel module comprises an air channel main body 1 and an air channel upper cover 4, the air channel main body 1 is a cavity, an air inlet end 5 and an air outlet end 11 are arranged on the air channel main body 1, the air blower 2 is installed in the air channel main body 1, an air outlet of the air blower 2 is connected with the silencing module 3, one or more cavities are arranged in the silencing module 3, and the cross section of a pipeline of each cavity is larger than that of the air outlet of the air blower 2.
The chambers of the silencing module 3 are cylindrical and are arranged in parallel in 4 groups, namely a first chamber 3-1, a second chamber 3-2, a third chamber 3-3 and a fourth chamber 3-4, and the chambers are separated by a partition plate with an opening.
One end of the air outlet end 11 of the air channel module is connected with the air outlet of the air blower 2, and the other end of the air outlet end is connected with the air inlet of the silencing module 3.
The air outlet of the air blower 2 and the air inlet of the noise reduction module 3 are sealed through a silica gel ring 7.
As shown in fig. 3, which is a cross-sectional view, air is sucked into the air duct main body 1 through the air inlet on the air duct upper cover 4 at the top of the air duct module, and the air inlet of the blower 2 is arranged at the bottom.
The fan blades inside the blower 2 rotate at a high speed to generate negative pressure, and the blower 2 sucks gas from the gas inlet at the bottom and outputs the gas to the silencing module 3. One or more chambers are arranged in the silencing module 3, when gas enters the silencing module 3, sound waves enter the silencing module 3 from the same direction, sudden expansion of the cross section of the pipeline causes sudden change of sound impedance inside the channel, and the propagation direction of the sound waves generates sudden change and reflection and interference phenomena in the chambers, so that the aim of silencing is achieved.
Example 2: fig. 4-6 show the embodiment of the silencing module 3 assembled inside the humidification tank, and the rest is the same as example 1. Fig. 5 shows an explosion diagram, which comprises an air duct main body 1, an air duct upper cover 4, a blower 2, a silica gel ring 7, a humidification tank upper cover 9, a silencing module 3 and a humidification tank main body 8. The silencing module 3 is assembled inside the humidifying tank, and an air outlet 6 of the silencing module 3 is communicated into the humidifying tank main body 8. An air outlet 10 of the humidifying tank is arranged on an upper cover 9 of the humidifying tank.
As shown in fig. 6, the fan blades inside the blower 2 rotate at a high speed to generate negative pressure, air is sucked into the air duct main body 1 through the air inlet, the air sucked by the blower 2 is output to the silencing module 3, and the silencing module 3 is arranged in the humidification canister main body 8. One or more chambers are arranged in the silencing module 3, when gas enters the silencing module 3, sound waves enter the silencing module 3 from the same direction, sudden expansion of the cross section of the pipeline causes sudden change of sound impedance inside the channel, and the propagation direction of the sound waves generates sudden change and reflection and interference phenomena in the chambers, so that the aim of silencing is achieved.
Example 3: fig. 7 to 9 show an embodiment in which the silencer module 3 is mounted inside the air duct module. Air-blower 2 and amortization module 3 all set up in the wind channel main part 1 of wind channel module, and amortization module 3 gas outlet 6 is installed at the end 11 of giving vent to anger of wind channel module. Fig. 8 shows an exploded view.
As shown in fig. 9, which is a cross-sectional view, the blades inside the blower 2 rotate at a high speed to generate negative pressure, air is sucked into the air duct main body 1 through the air inlet, and the air sucked by the blower 2 is output to the noise reduction module 3. One or more chambers are arranged in the silencing module 3, when gas enters the silencing module 3, sound waves enter the silencing module 3 from the same direction, sudden expansion of the cross section of the pipeline causes sudden change of sound impedance inside the channel, and the propagation direction of the sound waves generates sudden change and reflection and interference phenomena in the chambers, so that the aim of silencing is achieved.
The above embodiment is only for explaining the utility model discloses a technical thought, can not injecing with this the utility model discloses a protection scope, all according to the utility model provides a technical thought, any change of doing on technical scheme basis all falls into the utility model discloses within the protection scope.
Claims (9)
1. A silencing apparatus, characterized in that: the device comprises an air duct module, a blower and a silencing module;
the air channel module comprises an air channel main body which is a cavity, an air inlet end and an air outlet end are arranged on the air channel main body, the air blower is installed in the air channel main body, an air outlet of the air blower is connected with the silencing module, one or more chambers are arranged in the silencing module, and the cross section of the pipeline of each chamber is larger than that of the air outlet of the air blower.
2. The acoustic abatement apparatus of claim 1, wherein: the chambers of the sound attenuating module are separated by a partition with openings.
3. The acoustic abatement apparatus of claim 1, wherein: the silencing module is assembled inside the humidifying tank, and an air outlet of the silencing module is communicated into the humidifying tank.
4. The acoustic abatement apparatus of claim 3, wherein: the air outlet of the humidifying tank is arranged on the upper cover of the humidifying tank.
5. The silencing apparatus according to any one of claims 1 to 4, wherein: one end of the air outlet end of the air channel module is connected with an air outlet of the air blower, and the other end of the air outlet end of the air channel module is connected with an air inlet of the silencing module.
6. The acoustic abatement apparatus of claim 5, wherein: the air outlet of the air blower and the air inlet of the noise reduction module are sealed through a silica gel ring.
7. The silencing apparatus according to any one of claims 1 to 4, wherein: the air outlet of the air blower and the air inlet of the noise reduction module are sealed through a silica gel ring.
8. The silencing apparatus according to claim 1 or 2, wherein: the air blower and the silencing module are both arranged in the air duct main body, and the air outlet of the silencing module is arranged at the air outlet end of the air duct module.
9. The acoustic abatement apparatus of claim 8, wherein: the air outlet of the air blower and the air inlet of the noise reduction module are sealed through a silica gel ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021081702.4U CN212479715U (en) | 2020-06-12 | 2020-06-12 | Silencing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021081702.4U CN212479715U (en) | 2020-06-12 | 2020-06-12 | Silencing device |
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| Publication Number | Publication Date |
|---|---|
| CN212479715U true CN212479715U (en) | 2021-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021081702.4U Active CN212479715U (en) | 2020-06-12 | 2020-06-12 | Silencing device |
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| CN (1) | CN212479715U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021248719A1 (en) * | 2020-06-12 | 2021-12-16 | 江苏鱼跃医疗设备股份有限公司 | Silencing device |
-
2020
- 2020-06-12 CN CN202021081702.4U patent/CN212479715U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021248719A1 (en) * | 2020-06-12 | 2021-12-16 | 江苏鱼跃医疗设备股份有限公司 | Silencing device |
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