阅读说明：本技术 一种消音装置 (Silencing device ) 是由 乐志超 张佳 赵帅 郭建明 朱晶 杜文芝 李鑫 朱婷婷 于 2020-06-12 设计创作，主要内容包括：本发明公开了一种消音装置,包括风道模块,鼓风机,消音模块；风道模块包括一腔体,在腔体上设置进气端和出气端,鼓风机安装在风道模块的腔体内,鼓风机的出气口与消音模块连接,消音模块中设置有一个或多个腔室,腔室的管道截面大于鼓风机的出气口截面。当气体进入消音模块的同时,声波从同一方向进入消音模块,由于管道截面的突然扩张,造成通道内部的声音阻抗发生突变,声波的传播方向产生突变在腔室内发生反射及干涉现象,从而达到消声的目的。(The invention discloses a silencing device, which comprises an air duct module, a blower and a silencing module, wherein the air duct module is provided with a fan inlet; 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.)

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.

Technical Field

The present invention is in the field of medical devices and more particularly relates to a noise reduction device for use with a continuous positive airway pressure device, the use of which in a continuous positive airway pressure therapy apparatus is described herein, but it will be appreciated that features of the 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

Aiming at the technical problem, the invention designs a silencing device for continuous positive airway pressure treatment equipment.

The technical scheme adopted by the invention is as follows:

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 invention has the following beneficial effects: the invention can reduce the noise generated in the working process of the continuous positive airway pressure treatment equipment and improve the user experience.

Drawings

FIG. 1 is an assembly view of a silencer 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 silencer module and the air duct module according to the embodiment of the present invention.

FIG. 3 is a cross-sectional view of an assembly of a silencer module and an air duct module according to an embodiment of the invention.

FIG. 4 is an assembly view of the muffler module disposed inside the humidification tank in accordance with an embodiment of the present invention.

FIG. 5 is an exploded view of the components of the muffler module disposed inside the humidification tank in accordance with an embodiment of the present invention.

FIG. 6 is a cross-sectional view of an assembly in which a silencer module is disposed inside a humidification tank in accordance with an embodiment of the present invention.

FIG. 7 is an assembly view of a silencer module disposed within an air duct module according to an embodiment of the present invention.

Fig. 8 is an exploded view of an assembly in which a noise dampening module is disposed inside an air duct module according to an embodiment of the present invention.

FIG. 9 is a cross-sectional view of an assembly in which a noise dampening module is disposed within an air duct module according to an 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.