Air passage type or water passage type soundproof wall having acoustic isolation resonance chamber formed in air passage channel or water passage channel

A resonant cavity and channel technology, which is applied in the direction of noise absorption devices, sound insulation, and sound emitting devices, can solve problems such as air permeability, different technical ideas, and different structures, and achieve the effect of reducing noise pollution

Inactive Publication Date: 2015-12-09
MOKPO NAT MARITIME UNIV IND ACADEMIC COOPERATION FOUND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the technology disclosed in Korean Registered Patent No. 10-1009991 allows the noise incident to the local reaction type entrance hole of the front panel to pass through the partial reaction type sound absorption holes of the plurality of partitions in sequence t

Method used

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  • Air passage type or water passage type soundproof wall having acoustic isolation resonance chamber formed in air passage channel or water passage channel
  • Air passage type or water passage type soundproof wall having acoustic isolation resonance chamber formed in air passage channel or water passage channel
  • Air passage type or water passage type soundproof wall having acoustic isolation resonance chamber formed in air passage channel or water passage channel

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] After fabricating the soundproof wall structure of the present invention according to the data described later, the sound insulation performance was tested at the Korea Machinery Research Institute, No. 171, Changdong, Yucheng District, Daejeon Metropolitan City (test acceptance number: system 350-1-12101).

[0089]The test was conducted using the simple sound insulation performance system of the Korea Machinery Research Institute, and the measurement method was carried out for the simple sound insulation performance implemented in the microcavity in compliance with the sound insulation performance test specifications (ISO140-3:1995, ASTME90-09:2009 and KSF2808:2001) Measurement, the schematic diagram of the simple sound insulation performance measurement system used in the test is as follows Figure 7 shown.

[0090] The measurement conditions are as follows.

[0091] (measurement conditions)

[0092] -Effective diameter of ventilation channel: 5cm

[0093] -Specime...

Embodiment 2

[0111] The diameter (D) of the ventilation passage (10) of the aforementioned embodiment 1 is 5cm, compared with it, the effective diameter (D) of the ventilation passage (10) is set to 2cm in embodiment 2, and all the other are the same as the previous embodiment 1 is the same.

[0112] The following table 1 sorts out the test results of the foregoing embodiment 1 and embodiment 2, Figure 6 is the graph of its sound pressure transmission loss.

[0113] Table 1

[0114]

[0115] As mentioned earlier, the frequency range that humans can hear is 20Hz-20KHz, but most of the mechanical sounds are high-frequency and its value is above 500Hz. High frequencies above 5KHz are easy to scatter and cannot be transmitted to distant areas. Moreover, due to Most of the soundproof windows or soundproof walls are sufficient as long as they can block the range of 500Hz to 5000Hz. From the above Table 1, it can be seen that in the range of 400Hz to 5000Hz, both embodiments have an average...

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Abstract

A window or a wall is made, an air passage channel (10) passing through the window or the wall is made, at least one resonance chamber (r1, r2, and r3) is disposed near the air passage channel (10), and the air passage type channel and the resonance chamber are separated from each other by a porous sound absorbing material (30). When sound and air pass through the air passage type channel (10), the sound is absorbed and blocked by the resonance chambers (r1, r2 and r3), and the air passes through the air passage type channel (10). Using this, the air passage type soundproof window or soundproof wall by which air passes therethrough and sound is blocked can be manufactured, and using the same principle, the water passage type soundproof window and soundproof wall by which water passes therethrough and sound is blocked can be manufactured. The present invention can be applied to various industrial fields in which noise is generated by an air blower, and can be used for constructing a quiet ecological environment of epibenthos.

Description

technical field [0001] The technology disclosed in the present invention aims to solve the problem that the prior art cannot simultaneously realize ventilation and soundproofing or water passage and soundproofing in various industrial fields. [0002] Installing soundproof walls around roads or railways will not only block sound, but also block air flow, resulting in an ecological isolation phenomenon that hinders the passage of wind, heat, and pollen, thereby affecting the protection of the natural environment. [0003] If you open the windows of houses next to the road for ventilation, the noise will enter, but if you close them to block the noise, you will not be able to ventilate. Therefore need to develop a kind of soundproof window (or soundproof wall) that can allow air to pass through and only isolate noise. [0004] Moreover, many of the home appliances or industrial machines use air blowers to make moving air for air cooling (heat exchange) or supply hot air in orde...

Claims

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Application Information

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IPC IPC(8): E01F8/00G10K11/16
CPCE01F8/0047G10K11/172E01F8/00G10K11/16E01F8/0005E04B1/7038E04B1/7076E04B1/8209E04B1/84
Inventor 金相勋
Owner MOKPO NAT MARITIME UNIV IND ACADEMIC COOPERATION FOUND
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