CN215675652U

CN215675652U - Novel ventilation of homogeneous mixing, wide band noise elimination device

Info

Publication number: CN215675652U
Application number: CN202122258270.0U
Authority: CN
Inventors: 靳继港; 杜宪峰; 马西阳; 姜松林; 刘大伟; 律茵
Original assignee: Yantai University
Current assignee: Yantai University
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2022-01-28
Anticipated expiration: 2031-09-17

Abstract

The utility model discloses a novel uniform mixing and broadband silencing ventilation device, which comprises: a housing having an accommodating chamber therein; the air inlet channel is communicated with one end of the shell; the air outlet channel is communicated with the other end of the shell; a plurality of air guide boxes which are arranged in parallel at intervals; the plurality of partition plates are respectively arranged on two sides of the air guide boxes, and adjacent air guide boxes are connected through the partition plates; a plurality of air guide box through holes which are formed on the upper surface and the lower surface of the air guide box; a plurality of partition through holes opened on the partition; a sound absorbing material disposed between the housing and the air guide box and the partition. This device is through leading the porous structure on bellows and the baffle, can strengthen the gas disturbance effect, overcomes the inhomogeneous problem of gas mixing to set up sound absorbing material, realize absorbing sound and fall making an uproar.

Description

Novel ventilation of homogeneous mixing, wide band noise elimination device

Technical Field

The utility model relates to a ventilation device, in particular to a novel uniform mixing and broadband silencing ventilation device.

Background

Sound is generated by vibration of an object, and propagates in the air in the form of waves. The noise is the sound produced when the sounding body does irregular vibration. With the continuous development of social economy, various professional devices are used, the generated noise is more and more, and the normal life of people can be influenced, so that appropriate measures need to be taken to reduce the noise, and the ventilation and noise elimination device not only can allow gas to pass through and uniformly mix the gas, but also can reduce the noise generated when the gas passes through.

The existing ventilation noise-abatement equipment, its problem and defect that exist mainly have:

1) traditional ventilation noise eliminator, its sound absorbing material have adopted and have inhaled the sound piece or inhale the sound cotton, mainly absorb high frequency noise, and the absorption effect to low frequency noise is very poor and abandonment back is very big to the polluting nature of environment, so the working range who is suitable for is very narrow, and can not satisfy most operational environment.

2) The traditional ventilation noise-abatement device usually utilizes the resonator to eliminate the noise, and the resonator is not good to the sound absorption effect of broadband noise, in order to strengthen the sound absorption effect, consequently needs a plurality of resonators to link to each other, can occupy huge spatial position like this, so can receive certain restriction in the application.

3) In the traditional ventilation and noise elimination process, because the flow velocity of gas passing through the ventilation and noise elimination device is very high, the gas is discharged through the gas outlet channel after being not fully and uniformly mixed, the density of the gas cannot be guaranteed, and the performance of the gas is greatly influenced.

SUMMERY OF THE UTILITY MODEL

The utility model designs and develops a novel uniformly-mixed broadband noise-elimination ventilation device, which can enhance the gas disturbance effect and overcome the problem of non-uniform gas mixing by virtue of porous structures on a wind guide box and a partition plate, and realizes sound absorption and noise reduction by arranging a sound absorption material.

The technical scheme provided by the utility model is as follows:

a novel uniform mixing and broadband silencing ventilation device comprises:

a housing having an accommodating chamber therein;

the air inlet channel is communicated with one end of the shell;

the air outlet channel is communicated with the other end of the shell;

a plurality of air guide boxes which are arranged in parallel at intervals;

the plurality of partition plates are respectively arranged on two sides of the air guide boxes, and adjacent air guide boxes are connected through the partition plates;

the air guide box through holes are formed in the upper surface and the lower surface of the air guide box, and the air guide box through holes in the upper surface and the lower surface are communicated in the vertical direction;

a plurality of partition through holes opened on the partition;

a sound absorbing material disposed between the housing and the air guide box and the partition.

Preferably, inside the housing, a resonant cavity, an expansion cavity and a sound absorption cavity are sequentially formed between the inner wall of the housing and the plurality of air guide boxes and the plurality of partition plates.

Preferably, the partition plates arranged in the resonant cavity and the expansion cavity are provided with a plurality of partition plate through holes, and the partition plate arranged in the sound absorption cavity is not provided with partition plate through holes.

Preferably, the diameters of the plurality of air guide through holes are different, and the diameters of the partition plate through holes are the same.

Preferably, the air inlet channel, the air outlet channel, the shell, the air guide box and the partition plate are all made of metal materials.

Preferably, the sound absorbing material is a metal fiber sound absorbing material.

Preferably, the housing has a rectangular parallelepiped structure.

Preferably, the end surface area of one end of the inlet channel and one end of the outlet channel is smaller than the end surface area of the shell.

The utility model has the following beneficial effects:

(1) the utility model is characterized in that the upper and lower surfaces of the air guide box in the resonant cavity and the expansion cavity in the main structure are provided with through holes with different apertures, and the porous structure on the through holes can enhance the disturbance effect of the gas when the gas passes through, so that the gas can be fully and uniformly mixed, and the application field of the ventilation noise-abatement device is widened.

(2) The utility model adopts the structure that in the sound absorption cavity in the main structure, the closed space formed by the shell, the partition board and the air guide box is filled with the high-performance sound absorption material, aiming at the problem that high-temperature gas can be filled with the metal fiber sound absorption material, the noise of the gas in the device is reasonably controlled, and the comprehensive performance of the ventilation noise elimination device is improved.

(3) The resonant cavity, the expansion cavity and the sound absorption cavity in the main structure of the utility model adopt the design arrangement with equal spacing, the resonant cavity and the expansion cavity mainly uniformly mix the passing gas, and the sound absorption cavity absorbs the noise generated by the passing gas, so that the discharged gas meets the requirement in the actual working requirement.

The product can be used for ventilating and reducing noise of different gases, is suitable for ventilating and reducing noise of traditional food processing, medical equipment and the like, and can be applied to heavy industrial fields such as metallurgy, machinery and the like.

Drawings

Fig. 1 is a schematic view of the assembly of the ventilation muffler device of the present invention.

Fig. 2 is a schematic structural diagram of the housing according to the present invention.

Fig. 3 is a schematic structural diagram of an inlet channel and an outlet channel according to the present invention.

Fig. 4 is a schematic view of a main structure inside the housing according to the present invention.

FIG. 5 is a top view of the main structure of the interior of the housing according to the present invention

FIG. 6 is a half sectional view of the ventilation muffler device of the present invention

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the utility model by referring to the description text.

As shown in fig. 1-6, the present invention provides a novel ventilation device with uniform mixing and wide-frequency noise elimination, comprising: the air inlet passage 110, the shell 120, the air outlet passage 130, the air guide box 140, the air guide box through hole 141, the partition 150 and the sound absorption material 160.

As shown in fig. 1 and 2, the housing 120 is a rectangular parallelepiped structure, a containing cavity is provided inside, the air inlet passage 110 and the air outlet passage 130 are respectively communicated with two ends of the housing 120, in the housing 120, a plurality of air guide boxes 140 are provided, the air guide boxes 140 are arranged in parallel at intervals, partition plates 150 are provided on two sides of the air guide boxes 140, adjacent air guide boxes 140 are connected through the partition plates 150, between the housing 120 and the air guide boxes 140 and the partition plates 150, a sound absorbing material 160 is further provided, a plurality of air guide box through holes 141 are provided on the upper and lower surfaces of the air guide boxes 140, the air guide box through holes 141 provided on the upper and lower surfaces are coaxially arranged, the air guide box through holes are communicated in the vertical direction, the diameters of the air guide box through holes 141 are different, a plurality of partition plate through holes are provided on the partition plates 150, and the diameters of the partition plate holes are the same.

As shown in fig. 4 to 6, the main structure is embedded in the casing 120, inside the casing 120, a resonant cavity, an expansion cavity and a sound absorption cavity are sequentially formed between the casing 120 and the plurality of air guide boxes 140 and the partition boards 150, the three cavities are sequentially and closely connected at equal intervals to form the main structure, through holes are formed in the partition boards 150 forming the resonant cavity and the expansion cavity of the main structure, the through holes are regularly distributed, the diameters of the through holes are the same, air guide box through holes 141 with different pore sizes are formed in the upper and lower surfaces of each air guide box 140 of the main structure, and in the sound absorption cavity of the main structure, sound absorption materials 160 are filled in a closed space formed among the casing 120, the partition boards 150 and the air guide boxes 140, wherein the air inlet channel 110, the casing 120, the air outlet channel 130, the air guide boxes 140 and the partition boards 150 are made of the same metal materials.

In the present invention, preferably, the air inlet passage 110, the housing 120, the air outlet passage 130, the air guiding box 140, and the partition plate 150 are made of aluminum.

In another embodiment, the air inlet channel 110, the housing 120, the air outlet channel 130, the wind guiding box 140, and the partition 150 are made of iron.

In the present invention, it is preferable that the resonance chamber, the expansion chamber, and the sound absorption chamber are arranged at equal intervals.

As shown in fig. 5, the apertures of the air guiding box through holes 141 formed in the upper and lower surfaces of the air guiding box 140 in the main structure are divided into three sizes, i.e., large, medium, and small, and are regularly distributed on the air guiding box 140, so that the air disturbance effect can be further enhanced, and the air can be sufficiently and uniformly mixed.

Wherein, the partition boards 150 in the resonant cavity and the expansion cavity are provided with partition board through holes which are regularly distributed and used for increasing air input and avoiding the influence on normal work due to insufficient air input.

In the utility model, the metal fiber sound absorption material is selected as a preferable sound absorption material, and the sound absorption material has the characteristics of excellent sound absorption performance, high temperature resistance and high strength.

When gas enters the body structure of the housing 120 through the inlet passage 110, the inlet passage 110 may initially serve as a flow guide, since the partition plate 150 is provided with the through holes regularly distributed and the ventilation area of the air guide box 140 is large enough, the gas can easily enter the resonant cavity of the main structure, as the through holes 141 with different apertures are arranged on the upper and lower surfaces of the wind guide box 140 in the resonant cavity, the gas disturbance effect is greatly enhanced, the gas is primarily and uniformly mixed in the resonant cavity, then the air enters the expansion cavity, the upper surface and the lower surface of the air guide box 140 in the expansion cavity also have a porous structure, therefore, the gas is fully and uniformly mixed in the expansion cavity again, and then is discharged out of the whole ventilation and noise elimination device through the sound absorption cavity and the gas outlet channel 130, so that the influence on the actual application due to the nonuniform mixing of the discharged gas is avoided.

The gas enters the main structure of the housing 120 through the inlet channel 110, and under the combined action of the special structures of the resonance cavity and the expansion cavity, the gas is fully and uniformly mixed at the moment, and the density of the gas is ensured, but because the flow rate of the gas is very high, noise may be generated when the gas passes through the device, when the gas passes through the sound absorption cavity, because the upper and lower surfaces of the wind guide box 140 positioned in the sound absorption cavity are provided with the through holes 141, the gas can be directly contacted with the sound absorption material 160 filled in the closed space formed by the housing 120, the partition plate 150 and the wind guide box 140, the sound absorption material 160 can absorb the noise in the middle and high frequency range, and the influence on normal work due to too large noise is avoided, and the gas is discharged out of the whole ventilation and noise elimination device through the outlet channel 130 after full uniform mixing and noise reduction.

While embodiments of the utility model have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the utility model pertains, and further modifications may readily be made by those skilled in the art, it being understood that the utility model is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims

1. The utility model provides a novel ventilation unit of homogeneous mixing, wide band noise elimination which characterized in that includes:

a housing having an accommodating chamber therein;

the air inlet channel is communicated with one end of the shell;

the air outlet channel is communicated with the other end of the shell;

a plurality of air guide boxes which are arranged in parallel at intervals;

a plurality of partition through holes opened on the partition;

2. The new homogenously mixed, broadband muffled, ventilating device of claim 1, wherein a resonant cavity, an expansion cavity, and a sound absorbing cavity are sequentially formed inside the housing between the inner wall of the housing and the plurality of air guide boxes and the plurality of partition plates.

3. The new uniform mixing, broadband muffling ventilator of claim 2 wherein the baffles disposed within the resonant chamber and the expansion chamber are perforated with a plurality of baffle through holes, and the baffles disposed within the acoustic chamber are not perforated with baffle through holes.

4. The new uniform mixing, broadband muffling ventilator of claim 3 wherein the diameters of said plurality of baffle through holes are different and the diameters of said baffle through holes are the same.

5. The new homogenously mixed, broadband muffling, ventilating device of claim 4, wherein the inlet channel, the outlet channel, the housing, the air-guiding box, and the partition are made of metal.

6. The novel homogeneously mixed, broadband, acoustically dampened vent of claim 5, wherein said sound absorbing material is a metal fiber sound absorbing material.

7. The new homogenously mixed, broadband muffled, ventilating device of claim 6, wherein said housing is a rectangular parallelepiped.

8. The new homogenously mixed, broadband muffled, ventilating device of claim 7, wherein the end surfaces of the inlet channel end and the outlet channel end are smaller than the end surface area of the housing.