JPH0456213B2 - - Google Patents
Info
- Publication number
- JPH0456213B2 JPH0456213B2 JP22345783A JP22345783A JPH0456213B2 JP H0456213 B2 JPH0456213 B2 JP H0456213B2 JP 22345783 A JP22345783 A JP 22345783A JP 22345783 A JP22345783 A JP 22345783A JP H0456213 B2 JPH0456213 B2 JP H0456213B2
- Authority
- JP
- Japan
- Prior art keywords
- noise
- cover part
- outdoor equipment
- air
- sound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000001816 cooling Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 10
- 230000002265 prevention Effects 0.000 claims description 7
- 238000009423 ventilation Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 5
- 230000010363 phase shift Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 6
- 230000000644 propagated effect Effects 0.000 description 5
- 230000003321 amplification Effects 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002847 sound insulator Substances 0.000 description 1
Landscapes
- Other Air-Conditioning Systems (AREA)
Description
【発明の詳細な説明】
本発明は空気取入口および空気排出口の両方を
備えた充分な吸排気を必要とする、冷房装置、暖
房装置、換気装置等の空冷型室外機器用の新規な
騒音防止箱に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a novel noise reduction device for air-cooled outdoor equipment such as air conditioners, heating devices, ventilation devices, etc., which requires sufficient air intake and exhaust with both air intake and air outlet. Regarding the prevention box.
従来、実開昭58−78467号公報によつて、防音
体で囲んだコンプレツサをフアンで外から冷却す
る形式が開示されているが、この形式はフアンの
羽切音を防音できない欠陥がある。 Conventionally, Japanese Utility Model Application Publication No. 58-78467 discloses a method in which a compressor surrounded by a sound insulator is cooled from the outside with a fan, but this method has the drawback that it cannot insulate the fan blade noise.
また、実開昭58−87085号公報によつて、フア
ンの羽切音の1/4波長に設定した波長共鳴型の消
音器を利用した形式が開示されているが、この形
式フアンの他の騒音源をもつ機器には向かない欠
陥がある。 In addition, Utility Model Application Publication No. 58-87085 discloses a type using a wavelength resonance type muffler set to 1/4 wavelength of the fan blade noise, but other types of fans of this type It has a defect that makes it unsuitable for equipment with noise sources.
また、実開昭55−69645号公報によつて、換気
用送風機の吐出側に設けた低周波域騒音の減音用
膨脹型消音器内に、細径丸棒の曲面による騒音の
乱反射を起して更に減音する形式が開示されてい
るが、この形式は吸入側が密閉区画、準密閉区画
である場合には適しているが外気を吸入する構造
のものには不向きである、乱反射したものが必ず
しも全部が減音に有効に機能するとは限らず中に
は増幅するものもあるので、この増幅分によつて
減音効果が低くなつてしまう等の欠陥がある。 In addition, according to Japanese Utility Model Application Publication No. 55-69645, the curved surface of a small diameter round rod causes diffused reflection of noise in an expansion type muffler for reducing low frequency noise installed on the discharge side of a ventilation blower. However, this type is suitable when the intake side is a sealed compartment or semi-sealed compartment, but is not suitable for a structure that sucks in outside air. However, not all of them necessarily function effectively at sound reduction, and some of them amplify, so there is a drawback that the sound reduction effect becomes lower due to this amplification.
本発明は、フアンの羽切音も減音でき、フアン
の羽切音の波長に無関係に減音効果を得ることが
でき、フアンの他に騒音源をもつ機器に利用で
き、外気を吸入する必要のある構造のものに利用
でき、高い減音効果を得ることがてきる新規の空
冷型室外機器用騒音防止箱を提供することを目的
とする。 The present invention can also reduce fan blade noise, and can obtain a sound reduction effect regardless of the wavelength of the fan blade noise, and can be used for equipment that has a noise source other than the fan, and can be used for equipment that has a noise source other than the fan. To provide a novel noise prevention box for air-cooled outdoor equipment that can be used in a required structure and can obtain a high sound reduction effect.
この目的を達成するために本発明に係わる冷房
装置、暖房装置、換気装置等の空冷型室外機器用
騒音防止箱は、空冷フアン１１付き室外機器１２
の前後左右を囲繞する同室外機器１２より背の高
い防音壁材製カバー部１３と、カバー部１３の壁
の下辺個所に下向きに開口する状態で設けたＬ状
の防音壁材製外気取入口部材１４と、カバー部１
３の前後左右各壁の上辺個所の内側に設置台部２
０を介して固定した、上記空冷フアン１１付き室
外機器１２から出る騒音の一部の通過を許容して
位相のずれた屈折伝播音をつくる複数の管路長差
を有する中空管路１７をもつ中空体１９と、これ
等前後左右の中空体１９により囲繞した、騒音の
残り分の通過を許容する直接伝播音出口兼排気口
２１と、から成るものである。 In order to achieve this object, the noise prevention box for air-cooled outdoor equipment such as a cooling device, a heating device, a ventilation device, etc. according to the present invention has a noise prevention box for outdoor equipment 12 with an air cooling fan 11.
A cover part 13 made of soundproof wall material that is taller than the outdoor equipment 12 surrounding the room on the front, back, left, and right sides of the room, and an L-shaped outside air intake made of soundproof wall material that is opened downward at the lower side of the wall of the cover part 13. Member 14 and cover part 1
Install the stand part 2 on the inside of the upper side of each wall on the front, back, left, and right sides of 3.
A hollow pipe 17 having a plurality of pipe length differences that allows passage of a part of the noise emitted from the outdoor equipment 12 with the air cooling fan 11 fixed via the air cooling fan 11 and creates refraction propagation sound with a phase shift is provided. It consists of a hollow body 19 with a hollow body 19, and a directly propagated sound outlet/exhaust port 21 surrounded by the hollow bodies 19 on the front, rear, left and right sides and allowing the remainder of the noise to pass through.
図に示す実施例は防音壁材を以て冷暖房機の空
冷フアン１１付き室外機部１２の上下両面を除い
た全面を囲繞する同室外機部１２より僅かに高い
背丈の筒型カバー部１３を構成し、このカバー部
１３の左右および後面壁の下辺に同防音壁材を以
て構成した下向きＬ状の外気取入口部材１４を、
同じく前面壁の下半個所に点検用扉１５を夫々取
付けると共に当該カバー部１３に於ける前後左右
各面壁の上辺縁部１９の内側に上記冷却フアン１
１付き室外機部１２から出る音波を減音する下記
の干渉型防音装置１６を設置台部２０を介して固
定し、これ等干渉型防音装置１６より囲繞した、
騒音の残り分の通過を許容する直接伝播音出口兼
排気口２１を形成したものである。 In the embodiment shown in the figure, a cylindrical cover part 13 that is slightly taller than the outdoor unit part 12 that surrounds the entire surface of the outdoor unit part 12 with the air cooling fan 11 of the air conditioner/heater, except for the top and bottom surfaces, is constructed using a soundproof wall material. , A downward L-shaped outside air intake member 14 made of the same soundproof wall material is provided on the left and right sides of the cover part 13 and on the lower side of the rear wall.
Similarly, the inspection doors 15 are installed at the lower half of the front wall, and the cooling fans 1 are installed inside the upper edges 19 of the front, rear, left, and right walls of the cover section 13.
The following interference type soundproofing device 16 for reducing the sound waves emitted from the outdoor unit section 12 with 1 is fixed via the installation base section 20, and is surrounded by these interference type soundproofing devices 16,
A direct propagation sound outlet/exhaust port 21 is formed to allow the remainder of the noise to pass through.
これ等各干渉型防音装置１６は、第３，４図に
示すように上記空冷フアン１１付き室外機器１２
から出る騒音の一部の通過を許容して位相のずれ
た屈折伝播音をつくる複数の管路長差を有する中
空管路１７をもつ中空体１９であつて、カバー部
１３の上辺縁部１９及び設置台部２０と互に作用
しあうようにして使用しているものである。 Each of these interference type soundproofing devices 16 is connected to the outdoor equipment 12 with the air cooling fan 11, as shown in FIGS. 3 and 4.
A hollow body 19 having a hollow pipe 17 having a plurality of pipe length differences that allows passage of a part of the noise emitted from the pipe to create phase-shifted refraction propagation sound, the upper edge of the cover part 13 19 and the installation stand part 20.
本発明に係わる冷房装置、暖房装置、換気装置
等の空冷型室外機器用騒音防止箱は、上記中空体
１９の中空管路１７でつくられた屈折伝播音と排
気口２１から出る騒音すなわち中空管路１７を通
過しないので排出口２１から出て中空体１８を乗
り越える直接伝播音との位相が異なることによる
破壊的干渉現象が中空体１８の上部外方で生じ、
減音領域を筒状カバー部１３の上部の外周個所お
よび同個所の上方個所につくるものである。この
とき、防音壁材製カバー部１３および防音壁材製
外気取入口部材１４の減音も行なわれるので、結
果的に相乗的にカバー部１３のまわり全体が減音
される。 The noise prevention box for air-cooled outdoor equipment such as a cooling device, a heating device, a ventilation device, etc. according to the present invention is designed to reduce the noise produced by the refraction propagation sound created by the hollow conduit 17 of the hollow body 19 and the noise emitted from the exhaust port 21. Since it does not pass through the hollow pipe 17, a destructive interference phenomenon occurs outside the upper part of the hollow body 18 due to a difference in phase from the directly propagated sound that exits from the discharge port 21 and crosses the hollow body 18.
A sound reduction area is created at the outer periphery of the upper part of the cylindrical cover part 13 and above the same area. At this time, the noise of the cover part 13 made of the soundproof wall material and the outside air intake member 14 made of the soundproof wall material is also reduced, so that as a result, the entire area around the cover part 13 is reduced synergistically.
屈折伝播音と直接伝播音との位相のずれ量は管
路長差等で決めることができ、このずれ量を大き
くしたときには減音領域が大きくなる。 The amount of phase shift between refraction propagated sound and directly propagated sound can be determined by the difference in pipe length, etc., and when this amount of shift is increased, the sound reduction area becomes larger.
本発明は上記のように空冷フアン１１付き室外
機器１２の前後左右を囲繞する同室外機器１２よ
り背の高い防音壁材製カバー部１３と、カバー部
１３の壁の下辺個所に下向きに開口する状態で設
けたＬ状の防音壁材製外気取入口部材１４と、カ
バー部１３の前後左右各壁の上辺個所の内側に設
置台部２０を介して固定した、上記空冷フアン１
１付き室外機器１２から出る騒音の一部の通過を
許容して位相のずれた屈折伝播音をつくる複数の
管路長差を有する中空管路１７をもつ中空体１９
と、これ等前後左右の中空体１９により囲繞し
た、騒音の残り分の通過を許容する直接伝播音出
口兼排気口２１と、から成るので、フアンの羽切
音も減音でき、フアンの羽切音の波長に無関係に
減音効果を得ることができ、フアンの他に騒音源
をもつ機器に利用でき、外気を吸入する必要のあ
る構造のものに利用できるものであり、しかも、
中空管路１７の管路長差、カバー部１３の上辺縁
部１９および設定台部２０の位置および広さ、直
接伝播音出口兼排気口２１の大小等の設定によつ
て、屈折伝播音と直接伝播音との位相のずれ量、
減音領域の広狭および位置などを決めることが可
能であつて、破壊的干渉現象により高い減音効果
を得ることができるものである。特に本発明にお
いて中空管路１７は位相ずれを起すためのもの
で、上記従来の技術において述べた乱反射を起す
細径丸棒のような減音を妨げる増幅分を有してい
ないように構成できるものであつて、高い減音効
果を得るのに有効に機能するものである。また本
発明において外気取入口部材１４は防音壁材製で
ありＬ状に曲がつており床に向つて開口している
吸気機能を果たすことおよび内部から外に出る騒
音を効果的に抑えることを、また排気口２１は排
気機能を果たすことおよび上記した防音機能に寄
与することをそれぞれなすものであつて、吸排気
を必要とする空冷型室外機器に極めて好適なもの
である。 As described above, the present invention includes a cover part 13 made of a soundproof wall material that is taller than the outdoor equipment 12 that surrounds the outdoor equipment 12 with an air cooling fan 11 on the front, rear, left and right sides, and a downward opening at the lower side of the wall of the cover part 13. The above-mentioned air cooling fan 1 is fixed to the L-shaped outside air intake member 14 made of a soundproof wall material provided in the state, and the above-mentioned air cooling fan 1 is fixed to the inside of the upper side of each of the front, rear, left, and right walls of the cover part 13 via the installation stand part 20.
A hollow body 19 having a plurality of hollow pipes 17 having a plurality of pipe length differences that allow passage of a part of the noise emitted from the outdoor equipment 12 and create phase-shifted refraction propagation sound.
and a direct propagation sound outlet/exhaust port 21 which is surrounded by hollow bodies 19 on the front, rear, left and right sides and allows the remainder of the noise to pass through. It is possible to obtain a sound reduction effect regardless of the wavelength of the cutting sound, it can be used for equipment that has a noise source other than a fan, and it can be used for things that have a structure that requires intake of outside air.
Refraction propagation sound can be controlled by setting the difference in length of the hollow pipe 17, the position and width of the upper edge 19 of the cover part 13 and the setting table part 20, the size of the direct propagation sound outlet/exhaust port 21, etc. and the amount of phase shift between the directly propagated sound,
It is possible to determine the width and position of the sound attenuation area, and a high sound attenuation effect can be obtained through destructive interference phenomena. In particular, in the present invention, the hollow conduit 17 is for causing a phase shift, and is constructed so as not to have an amplification component that hinders sound reduction, such as the narrow diameter round rod that causes diffused reflection as described in the above-mentioned conventional technology. It is possible to do so, and it functions effectively in obtaining a high sound reduction effect. In addition, in the present invention, the outside air intake member 14 is made of a soundproof wall material, is curved in an L shape, and functions to take in air by opening toward the floor, and effectively suppresses noise emitted from the inside to the outside. Furthermore, the exhaust port 21 performs an exhaust function and contributes to the above-mentioned soundproofing function, and is extremely suitable for air-cooled outdoor equipment that requires air intake and exhaust.
図は本発明冷房装置、暖房装置、換気装置等の
空冷型室外機器用騒音防止箱の実施例を示すもの
であつて、第１図は全体の正面図、第２図は同じ
く平面図、第３図は第２ズＡ−Ａ線に沿う断面略
図、第４図は防音装置の斜視図である。
１１……空冷フアン、１２……室外機部、１３
……カバー部、１４……外気取入口、１５……点
検用扉、１６……干渉型防音装置、１７……中空
管路、１８……中空体、１９……上辺縁部、２０
……設置台部、２１……排気口。
The figures show an embodiment of the noise prevention box for air-cooled outdoor equipment such as a cooling device, heating device, or ventilation device according to the present invention. 3 is a schematic cross-sectional view taken along the second line A-A, and FIG. 4 is a perspective view of the soundproofing device. 11...Air cooling fan, 12...Outdoor unit, 13
... Cover part, 14 ... Outside air intake, 15 ... Inspection door, 16 ... Interference type soundproofing device, 17 ... Hollow pipe, 18 ... Hollow body, 19 ... Upper edge part, 20
...Installation stand, 21...Exhaust port.
Claims (1)
を囲繞する同室外機器１２より背の高い防音壁材
製カバー部１３と、カバー部１３の壁の下辺個所
に下向きに開口する状態で設けたＬ状の防音壁材
製外気取入口部材１４と、カバー部１３の前後左
右各壁の上辺個所の内側に設置台部２０を介して
固定した、上記空冷フアン１１付き室外機器１２
から出る騒音の一部の通過を許容して位相のずれ
た屈折伝播音をつくる複数の管路長差を有する中
空管路１７をもつ中空体１９と、これ等前後左右
の中空体１９により囲繞した、騒音の残り分の通
過を許容する直接伝播音出口兼排気口２１と、か
ら成ることを特徴とする冷房装置、暖房装置、換
気装置等の空冷型室外機器用騒音防止箱。1. A cover part 13 made of a soundproof wall material that is taller than the outdoor equipment 12 and surrounding the outdoor equipment 12 with an air cooling fan 11 on the front, rear, left and right sides, and an L-shaped cover part 13 that is opened downward at the lower side of the wall of the cover part 13. The outdoor equipment 12 with the air cooling fan 11 is fixed to the inside of the upper side of each of the front, rear, left, and right walls of the cover part 13 via the installation base part 20.
A hollow body 19 has a hollow pipe 17 having a plurality of pipe length differences that allows a part of the noise to pass through and creates refraction propagation sound with a phase shift. A noise prevention box for air-cooled outdoor equipment such as a cooling system, a heating system, a ventilation system, etc., comprising a surrounding direct propagation sound outlet/exhaust port 21 that allows the remainder of the noise to pass through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58223457A JPS60114674A (en) | 1983-11-28 | 1983-11-28 | Noise preventive box for apparatus, such as air cooling device, heating apparatus, ventilating device, etc. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58223457A JPS60114674A (en) | 1983-11-28 | 1983-11-28 | Noise preventive box for apparatus, such as air cooling device, heating apparatus, ventilating device, etc. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60114674A JPS60114674A (en) | 1985-06-21 |
| JPH0456213B2 true JPH0456213B2 (en) | 1992-09-07 |
Family
ID=16798447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58223457A Granted JPS60114674A (en) | 1983-11-28 | 1983-11-28 | Noise preventive box for apparatus, such as air cooling device, heating apparatus, ventilating device, etc. |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60114674A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0238024U (en) * | 1988-09-06 | 1990-03-13 | ||
| JP2008193989A (en) * | 2007-02-15 | 2008-08-28 | Daiichi Seiko Co Ltd | Tripod stand for fishing rod |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS593304Y2 (en) * | 1978-11-08 | 1984-01-30 | 石川島播磨重工業株式会社 | Silencer for ventilation blowers |
| JPS5878467U (en) * | 1981-11-20 | 1983-05-27 | 三洋電機株式会社 | Outdoor units such as air conditioners |
| JPS5887085U (en) * | 1981-12-07 | 1983-06-13 | 松下冷機株式会社 | refrigerator |
-
1983
- 1983-11-28 JP JP58223457A patent/JPS60114674A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60114674A (en) | 1985-06-21 |
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