A muffler assembly

Abstract

The utility model provides a kind of silencer assembly, it is related to household electrical appliances technical field, including dust collector body, still including noise reduction assembly, the noise reduction assembly includes fixedly connected in the suction end of dust collector body suction pipe, the outside fixed connection of the suction pipe has muffler pipe, the inside rotation of the muffler pipe is connected with shaft, the outside fixed connection of the shaft has plasterboard;Sound insulation component, the sound insulation component includes fixedly connected in the buffer column of muffler pipe inner wall, the one end fixed connection of the buffer column away from muffler pipe has vertical board, the inside of the vertical board is provided with several sound insulation felt;This design utilizes airflow kinetic energy to drive silencing structure, realizes the effect of active noise reduction.Combined with passive sound insulation technology of multilayer material, thereby formed the effect of collaborative silencing.Thereby solve the problem that straight pipe type air duct is prone to turbulent noise and turbulent noise in the operation process.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a muffler assembly. Background Technology

[0002] Household appliances refer to electrical equipment that is powered by electricity or other energy sources and is used in homes and similar living environments. They achieve functions such as cleaning, cooking, environmental regulation, clothing care, and information entertainment through mechanical and electronic means. They cover multiple categories such as kitchen appliances, cleaning appliances, and environmental appliances. Their core function is to replace manual labor and improve the efficiency and comfort of life. They are indispensable tools for modern family life.

[0003] Taking vacuum cleaners as an example among existing home appliances, when they are working, the fan rotates at high speed to form a strong airflow. The airflow is prone to turbulence at the air inlet, the corner of the air duct, and the filter. Existing technologies mostly use simple straight-tube air ducts, resulting in relatively large aerodynamic noise. Existing shells are mostly single-layer plastic structures with poor sound insulation, which can easily cause auditory interference to users in the home environment.

[0004] Therefore, this utility model provides a muffler assembly. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a muffler assembly.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a silencer assembly, including a vacuum cleaner body and a noise reduction assembly, wherein the noise reduction assembly includes a suction pipe fixedly connected to the suction end of the vacuum cleaner body, a silencer pipe fixedly connected to the outside of the suction pipe, a rotating shaft rotatably connected inside the silencer pipe, and a gypsum board fixedly connected to the outside of the rotating shaft.

[0007] The sound insulation component includes a buffer column fixedly connected to the inner wall of the silencer pipe, and a vertical plate fixedly connected to the end of the buffer column away from the silencer pipe. Several sound insulation felts are provided on the inner side of the vertical plate.

[0008] In a preferred embodiment, the end of the upright panel away from the sound insulation felt is fixedly connected with sound insulation cotton.

[0009] In a preferred embodiment, the outer side of the upright plate is in contact with the outer side of the sound insulation cotton.

[0010] In a preferred embodiment, a dust suction handle is fixedly connected to the end of the silencer pipe away from the suction pipe.

[0011] In a preferred embodiment, the sound insulation felt is laid continuously along the inner surface of the upright plate.

[0012] In a preferred embodiment, the buffer columns are arranged at equal intervals along the circumferential direction of the inner wall of the silencer pipe.

[0013] In a preferred embodiment, the sound-absorbing cotton covers the entire surface of the upright panel on the side away from the sound-absorbing felt.

[0014] In a preferred embodiment, the vertical plate forms a gap between the buffer column and the silencer pipe.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] This invention utilizes the vacuum cleaner body to drive the suction pipe, transmitting negative pressure to the vacuum handle to form an airflow channel. The airflow causes the rotating shaft and plasterboard inside the silencer pipe to rotate, changing the sound wave incident angle and disrupting standing waves. Simultaneously, the buffer column drives the upright plate to support the sound insulation felt and cotton, achieving noise conversion and absorption. This design utilizes the kinetic energy of airflow to drive the silencer structure for active noise reduction, combined with passive sound insulation of multiple layers of materials, to form a synergistic noise reduction effect. It solves the problem of turbulent noise easily generated in straight-pipe air ducts. Attached Figure Description

[0017] Figure 1 A perspective view of a muffler assembly provided by this utility model;

[0018] Figure 2 A schematic diagram of the silencer pipe structure of a silencer assembly provided by this utility model;

[0019] Figure 3 for Figure 2 Enlarged view of point A in the image;

[0020] Figure 4 A schematic diagram of the sound insulation component structure of a muffler assembly provided by this utility model;

[0021] Figure 5 A schematic diagram of the sound insulation cotton structure of a muffler assembly provided by this utility model.

[0022] Legend:

[0023] 1. Vacuum cleaner body;

[0024] 2. Noise reduction components; 21. Air intake duct; 22. Silencing duct; 23. Rotary shaft; 24. Gypsum board;

[0025] 3. Sound insulation components; 31. Buffer columns; 32. Sound insulation felt; 33. Vertical panels; 34. Sound insulation cotton;

[0026] 4. Vacuum cleaner handle. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figure 1 - Figure 4 As shown, this embodiment provides a technical solution: a silencer assembly, including a vacuum cleaner body 1 and a noise reduction assembly 2. The noise reduction assembly 2 includes a suction pipe 21 fixedly connected to the suction end of the vacuum cleaner body 1, a silencer pipe 22 fixedly connected to the outside of the suction pipe 21, a rotating shaft 23 rotatably connected inside the silencer pipe 22, a plasterboard 24 fixedly connected to the outside of the rotating shaft 23, and a vacuum handle 4 fixedly connected to the end of the silencer pipe 22 away from the suction pipe 21.

[0029] The vacuum cleaner body 1 generates negative pressure, providing a power source for the entire airflow channel. The suction pipe 21 transmits the negative pressure of the vacuum cleaner body 1 to the vacuum handle 4, forming a complete airflow channel and providing an installation interface for the silencer pipe 22. This allows the silencer structure to be modularly fitted onto the outside of the suction pipe 21 for easy assembly. The silencer pipe 22 provides a closed cavity to accommodate the rotating shaft 23, the gypsum board 24 rotating sound-absorbing structure, and the subsequent sound insulation components 3. The rotating shaft 23 allows the gypsum board 24 to rotate at a low speed with the airflow or external drive, periodically changing the incident angle of the sound wave and destroying the standing wave. The gypsum board 24 utilizes its dual characteristics of porosity and mass to dissipate sound energy through micropores and reflect low-frequency noise through its surface mass. The vacuum handle 4 forms the end pickup port to complete the vacuuming function and is integrated with the silencer pipe 22 as an integrated handle, so the user does not need to hold the silencer pipe 22 separately, improving ergonomics.

[0030] like Figure 1 , Figure 4 and Figure 5 As shown, the sound insulation component 3 includes a buffer column 31 fixedly connected to the inner wall of the silencer pipe 22. A vertical plate 33 is fixedly connected to the end of the buffer column 31 away from the silencer pipe 22. Several sound insulation felts 33 are arranged on the inner side of the vertical plate 33. A sound insulation cotton 34 is fixedly connected to the end of the vertical plate 33 away from the sound insulation felts 32. The outer side of the vertical plate 33 is in contact with the outer side of the sound insulation cotton 34. The sound insulation felts 32 are continuously laid along the inner surface of the vertical plate 33. The buffer columns 31 are arranged equidistantly along the circumference of the inner wall of the silencer pipe 22. The sound insulation cotton 34 covers the entire surface of the vertical plate 33 on the side away from the sound insulation felts 32. A gap is formed between the vertical plate 33 and the silencer pipe 22 through the buffer column 31.

[0031] The buffer column 31 forms a vibration isolation between the silencer pipe 22 and the vertical plate 33, blocking the solid sound transmission path. At the same time, the circumferentially equidistant arrangement makes the vertical plate 33 uniformly stressed, preventing the high-speed airflow from causing secondary noise radiation due to plate vibration. The vertical plate 33 serves as the skeleton of the sound insulation felt 32 and the sound insulation cotton 34, and together with the buffer column 31, it forms a double-layer sound insulation shell. The sound insulation felt 32 is located on the inner side of the vertical plate 33, directly facing the airflow noise, and converts sound energy into heat energy through viscoelastic damping. The sound insulation cotton 34 is filled between the outer side of the vertical plate 33 and the inner wall of the silencer pipe 22, absorbing the residual noise radiated outward and further damping the vibration of the vertical plate 33.

[0032] Working principle:

[0033] like Figure 1 - Figure 5 As shown:

[0034] In use: First, the vacuum cleaner body 1 generates negative pressure, which is then transmitted to the vacuum handle 4 through the suction pipe 21, thus forming a complete airflow channel. Within this airflow channel, the airflow drives the rotating shaft 23 inside the silencer 22 to rotate at a low speed. The low-speed rotation of the rotating shaft 23 further drives the plasterboard 24 to rotate synchronously. This rotation can periodically change the incident angle of the sound waves, thereby effectively disrupting the formation of standing waves. At the same time, the buffer column 31 on the inner wall of the silencer 22, through its vibration isolation effect, enables the upright plate 33 to stably support the sound insulation felt 32 and the sound insulation cotton 34. The sound insulation felt 32 can convert the direct airflow noise into heat energy, while the sound insulation cotton 34 can absorb residual noise and dampen the vibration of the upright plate 33. Through this comprehensive design, the noise generated when the vacuum cleaner is working is effectively silenced.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A muffler assembly, comprising a vacuum cleaner body (1), characterized in that, It also includes a noise reduction component (2), which includes a suction pipe (21) fixedly connected to the suction end of the vacuum cleaner body (1), a silencer pipe (22) fixedly connected to the outside of the suction pipe (21), a rotating shaft (23) rotatably connected inside the silencer pipe (22), and a plasterboard (24) fixedly connected to the outside of the rotating shaft (23). The sound insulation component (3) includes a buffer column (31) fixedly connected to the inner wall of the silencer pipe (22). A vertical plate (33) is fixedly connected to one end of the buffer column (31) away from the silencer pipe (22). Several sound insulation felts (32) are provided on the inner side of the vertical plate (33).

2. A muffler assembly according to claim 1, characterized in that: The end of the upright plate (33) away from the sound insulation felt (32) is fixedly connected to sound insulation cotton (34).

3. A muffler assembly according to claim 1, characterized in that: The outer side of the upright plate (33) is in contact with the outer side of the sound insulation cotton (34).

4. A muffler assembly according to claim 1, characterized in that: The end of the silencer pipe (22) away from the suction pipe (21) is fixedly connected to a vacuum handle (4).

5. A muffler assembly according to claim 1, characterized in that: The sound insulation felt (32) is laid continuously along the inner surface of the vertical plate (33).

6. A muffler assembly according to claim 1, characterized in that: The buffer columns (31) are arranged at equal intervals along the inner wall of the silencer pipe (22).

7. A muffler assembly according to claim 3, characterized in that: The sound insulation cotton (34) covers the entire surface of the upright plate (33) on the side away from the sound insulation felt (32).

8. A muffler assembly according to claim 1, characterized in that: The vertical plate (33) forms a gap between the buffer column (31) and the silencer pipe (22).

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