JP3556087B2 - Ultra low noise air conditioner - Google Patents

Ultra low noise air conditioner Download PDF

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Publication number
JP3556087B2
JP3556087B2 JP05404698A JP5404698A JP3556087B2 JP 3556087 B2 JP3556087 B2 JP 3556087B2 JP 05404698 A JP05404698 A JP 05404698A JP 5404698 A JP5404698 A JP 5404698A JP 3556087 B2 JP3556087 B2 JP 3556087B2
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Japan
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air
passage
casing
return
fan
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JP05404698A
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JPH11248183A (en
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▲隆▼文 和田
州三 秋田
正 鈴木
圭二 渡辺
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Kubota Corp
Kubota Air Conditioner Ltd
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Kubota Corp
Kubota Air Conditioner Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、空気調和機に係り、音楽ホール、病院等の静寂な室内空間を空調するための超低騒音空気調和機に関する。
【0002】
【従来の技術】
従来、空気調和機は、在室者にとって快適な環境を作ることを目的として、部屋の用途に適した室内空気の温度、湿度、清浄度を維持しており、夏季における冷房の機能と冬季における暖房の機能とを併せ持ち、四季を通じて常に安定した状態の空気を室内に供給している。
【0003】
このために、空気調和機は、送風機によって送風する空気をダクトを通して対象とする室へ供給し、室の天井や壁に設けた吹出口から室内空間へ空気を送り込んでおり、空気調和機内では、熱交換器のコイルの管群に熱媒を通し、管の外側を流れる空気を冷やしたり、温めたりして、空気の温度や湿度を調整している。
【0004】
しかし、調整した空気の供給に際して、空気調和機内で送風機等から発生する騒振音が空気の吹き出しとともに室内に伝わり、このことが、音楽ホール、病院等の静寂な室内空間を空調するうえで問題であった。
【0005】
この問題に対する解決策として、特許第2546185号に記載する技術がある。これは、送風機における還気側送風通路(室内の吸込口に通じる)と送風側送風通路(室内の吹出口に通じる)とをクロス状に迂曲形成して消音チャンバーを構成するとともに、各送風通路の途中に消音機構を設置したものである。この構成により、機内で発生して送風側送風通路を流れる騒振音と、室内で発生して還気側送風通路を流れる騒振音とを通路の隔壁を介して相互に影響させて、騒振音を緩和している。
【0006】
【発明が解決しようとする課題】
しかし、上記した従来の構成においては、空気調和機の主要部を納める領域と消音チャンバーの領域とを単純に隣接配置して一体化しているために、主要部の限られた空間領域に送風機や熱交換器を配置せねばならず、主要部の領域における還気側送風通路と送風側送風通路の構造が複雑となり、熱交換器と給気用送風機の間の通風路が狭くなって、空気流のスムーズな流れを確保することができず、圧力損失の増加による消費エネルギーの増大を招く恐れがあった。また、送風機や熱交換器を配置する領域が狭いので、組み込む送風機が限られたものとなる問題があった。
【0007】
本発明は上記した課題を解決するものであり、騒振音を抑制した低騒音で、かつ空気流がスムーズに流れる超低騒音空気調和機を提供することを目的とする。
【0008】
【課題を解決するための手段】
上記した課題を解決するために、請求項1に係る本発明の超低騒音空気調和機は、ケーシングの長手方向の一方側に還気口と給気口を設けるとともに、他方側に排気口と外気口を設け、ケーシング内に還気口と排気口を連通する還気通風路と、外気口と給気口を連通する給気通風路とを設け、還気通風路の終端側と給気通風路の始端側を連通し、還気通風路に還気ファンを配置し、給気通風路にエアフィルタと熱交換器と給気ファンを配置する空気調和機において、
ケーシングの一方側の領域に、還気通風路の還気口から還気ファンに至る経路を、ケーシングの底部側で反転するU字状をなして内面に吸音材を有する還気消音通風路として、ケーシングの上下方向に沿って形成し、還気消音通風路のU字状の底部が吸音材を厚く形成して気流および音波の衝突を受け止めて吸音する部位をなし、ケーシングの他方側の領域に還気ファンを配置し、
ケーシングの上方側の領域に、給気通風路の給気ファンから給気口に至る経路を、ケーシングの他方側で反転する横向きU字状をなして内面に吸音材を有する給気消音通風路として、ケーシングの長手方向に沿って形成し、給気消音通風路のU字状の底部が吸音材を厚く形成して気流および音波の衝突を受け止めて吸音する部位をなし、ケーシングの下方側の領域に、エアフィルタと熱交換器と給気ファンを配置し、
還気消音通風路と還気ファンを、ケーシングの長手方向および上下方向において、給気消音通風路と干渉しない位置に設け、給気消音通風路とエアフィルタと熱交換器と給気ファンを、ケーシングの長手方向および上下方向において、還気消音通風路と干渉しない位置に設けた構成とするものである。
【0009】
上記した構成により、還気ファンおよび給気ファンを駆動した状態において、対象の室内に連通する還気系から還気口を通って還気通風路に流入した還気は、U字状の還気消音通風路を通り還気ファンを経て排気口から外部へ流出し、一部が還気通風路の終端側において給気通風路の始端側に流入する。給気通風路に流入した還気は、外気口から流入する外気空気と合流し、給気としてエアフィルタ、熱交換器、給気ファンを経てU字状の給気消音通風路を通り、給気口から対象の室内に連通する給気系に流出する。
【0010】
この間に、還気消音通風路および給気消音通風路においては、内面の吸音材によって消音効果を得るとともに、還気消音通風路および給気消音通風路におけるU字の反転部と、還気消音通風路から還気ファンへの曲がり部と、給気ファンから給気消音通風路への曲がり部とにおいて、内面に衝突する気流および音波の衝突を受け止めて効果的に消音することができる。
【0011】
しかも、還気消音通風路および給気消音通風路は、互いの位置が相互に干渉し合わないので、還気消音通風路をケーシングの上下方向の領域幅を有効に利用して長く形成することができ、給気消音通風路をケーシングの長手方向の領域幅を有効に利用して長く形成することができ、双方の消音通風路における吸音材による吸音工程が長くなり、消音効果が高くなる。
【0012】
還気通風路および給気通風路は、曲がり部が少なくて直線部分が多く、方向が二次元の範囲で変化しているので、気流がスムーズに流れ、従来の構造に比べて、各通風路を流れる気流に与える通風抵抗が少なく、圧力損失が小さくなり、還気ファンおよび給気ファンにおける消費エネルギーを抑制できる。
【0013】
還気消音通風路および給気消音通風路においては、内面の吸音材によって消音効果を得るとともに、U字状の底部において、厚い吸音材とすることにより音波の衝突を受け止めて吸音効果を高めることができる。
【0014】
還気消音通風路および給気消音通風路においては、内面の吸音材によって消音効果を得るとともに、U字状の底部において、空気層を設けることにより音波の衝突を受け止めてさらに吸音効果を高めることができる。
【0015】
【発明の実施の形態】
以下、本発明の実施形態を図面に基づいて説明する。図1において、本発明の超低騒音空気調和機における通風路の概略構造を説明する。
【0016】
還気通風路1は、前半部が還気口2から還気ファン3に至る還気消音通風路4をなし、後半部が還気ファン3から排気口5および循環気ダンパ6に至る経路を構成している。給気通風路7は、前半部が外気口8からエアフィルタ9、熱交換器10a、加湿器10bを通して給気ファン11に至る経路をなし、後半部が給気ファン11から給気口12に至る給気消音通風路13を構成している。還気通風路1の終端側と給気通風路7の始端側が循環気ダンパ6において連通している。
【0017】
図2〜図10に示すように、還気口2および給気口12はケーシング14の長手方向の一方側の天面に設けており、排気口5および外気口8は、ケーシング14の他方側の側面に設けている。
【0018】
還気消音通風路4は、ケーシング14の底部側で反転するU字状をなし、ケーシング14の長手方向の一方側で、かつ幅方向の一方側の領域に、ケーシング14の上下方向に沿って形成している。還気消音通風路4は内面の全域に吸音材15を設けており、U字状の底部に対応する部位15aにおける吸音材15を他の部位より厚く形成して、気流および音波の衝突を受け止めて吸音するようにしている。この吸音材15はグラスウール等で形成したものであり、U字状の底部に対応する部位15aにおいて200mmの厚さを有し、他の部位において50mmの厚さを有している。還気ファン3は、ケーシング14の長手方向の他方側で、かつ幅方向の一方側で、かつ上方側の領域に設けている。
【0019】
給気消音通風路13は、ケーシング14の他方側で反転する横向きU字状をなし、ケーシング14の上方側で、かつ幅方向の他方側の領域に、ケーシング14の長手方向に沿って形成している。給気消音通風路13は、還気消音通風路4と同様に内面の全域に吸音材15を設けており、U字状の底部に対応する部位15aにおける吸音材15を他の部位より厚く形成して、気流および音波の衝突を受け止めて吸音するようにしている。エアフィルタ9と熱交換器10aと加湿器10bと給気ファン11は、ケーシング14の下方側で、かつ幅方向の他方側の領域に配置している。
【0020】
したがって、還気消音通風路4と還気ファン3は、ケーシング14の長手方向および上下方向において、給気消音通風路13と干渉しない位置に存在しており、給気消音通風路13とエアフィルタ9と熱交換器10aと加湿器10bと給気ファン11は、ケーシング14の長手方向および上下方向において、還気消音通風路4と干渉しない位置に存在しており、還気消音通風路4と給気消音通風路13とが隔壁を介して隣接している。
【0021】
給気ファン11および還気ファン3としては、両吸込遠心ファン、片吸込遠心ファン、またはファンハウジングの無い片吸込ターボファンを採用することができる。
【0022】
また、還気消音通風路4および給気消音通風路13のU字状の底部に対応する部位には、吸音材15に代えて空気層を形成する中空部材を設けることも可能である。
【0023】
上記した構成により、還気ファン3および給気ファン11を駆動する状態において、対象の室内に連通する還気系から還気口2を通って還気通風路1に流入する還気RAは、還気消音通風路4を通り、還気ファン3を経て排気口5から外部へ排気EAとして流出し、一部が還気通風路1の終端側において循環気ダンパ6を通って給気通風路7の始端側に流入する。
【0024】
給気通風路7に流入した還気RAは、外気口から流入する外気OAと合流し、エアフィルタ9、熱交換器10a、加湿器10b、給気ファン11を経て給気消音通風路13を通り、給気口12から対象の室内に給気SAとして対象の室内に連通する給気系に流出する。
【0025】
この間に、還気消音通風路4および給気消音通風路13においては、内面の吸音材15によって消音効果を得る。このとき、還気消音通風路4および給気消音通風路13は、互いの位置が相互に干渉し合わないので、還気消音通風路4をケーシング14の上下方向の領域幅を有効に利用して長く形成し、給気消音通風路13をケーシング14の長手方向の領域幅を有効に利用して長く形成しているので、双方の消音通風路における吸音材15による吸音行程が長くなり、消音効果が高くなる。
【0026】
また、気流および騒振音の音波は、還気消音通風路4および給気消音通風路13におけるU字の反転部と、還気消音通風路4から還気ファン3への曲がり部と、給気ファン11から給気消音通風路13への曲がり部とにおいて、ケーシング14の内面に衝突し、吸音材15が衝突を受け止めて効果的に消音する。特に、U字状の底部において、厚い吸音材15により気流および音波の衝突を受け止めることにより効果的に吸音することができる。
【0027】
還気通風路1および給気通風路7は、曲がり部が少なくて直線部分が多い形状をなし、曲がる方向が二次元の範囲で変化しているので、各通風路を流れる気流に与える通風抵抗が少なく、圧力損失が小さくなり、還気ファン3および給気ファン11における消費エネルギーを抑制できる。
【0028】
本発明の他の実施形態として、図11〜図16に、還気ファン3および給気ファン11としてプラグファン(ファンハウジングの無い片吸込形遠心式ターボファン)を組み込んだ構成を示す。
【0029】
また、図17〜図18に示すように、還気口2および給気口12は、ケーシング14の長手方向の一方側の側面に設けることもでき、排気口5および外気口8は、ケーシング14の長手方向の他方側の天面に設けることもできる。
【0030】
さらに、図19〜図22に示すように、還気ファン3および給気ファン11として片吸込形遠心式ファンを組み込むこともできる。
【0031】
【発明の効果】
以上述べたように、本発明によれば、還気消音通風路および給気消音通風路を互いに干渉し合わない位置に設けることにより、還気消音通風路をケーシングの上下方向の領域幅を有効に利用して長く形成し、給気消音通風路をケーシングの長手方向の領域幅を有効に利用して長く形成できるので、双方の消音通風路における吸音材による吸音行程が長くなり、消音効果を高めることができる。また、還気消音通風路および給気消音通風路のU字状の底部において、厚い吸音材により音波の衝突を受け止めることにより、効果的な吸音を行なえる。あるいは、U字状の底部において、空気層が音波の衝突を受け止めることにより、効果的な吸音を行なえる。さらに、還気通風路および給気通風路は、曲がり部が少なくて直線部分が多く、方向が二次元の範囲で変化するので、気流に与える通風抵抗および圧力損失が小さく、消費エネルギーを抑制できる。しかも、組み込む送風機に各種のものを使用できる。
【図面の簡単な説明】
【図1】本発明の実施形態における超低騒音空気調和機の概略構成を示す摸式図である。
【図2】同実施形態における超低騒音空気調和機の正面図である。
【図3】同実施形態における超低騒音空気調和機の平面図である。
【図4】同実施形態における超低騒音空気調和機の右側面図である。
【図5】同実施形態における超低騒音空気調和機の左側面図である。
【図6】図3におけるA−A矢視断面図である。
【図7】図2におけるC−C矢視断面図である。
【図8】図3におけるB−B矢視断面図である。
【図9】図2におけるD−D矢視断面図である。
【図10】図2におけるE−E矢視断面図である。
【図11】本発明の他の実施形態における超低騒音空気調和機の概略構成を示す摸式図である。
【図12】同実施形態における超低騒音空気調和機の平面図である。
【図13】同実施形態における超低騒音空気調和機の正面図である。
【図14】同実施形態における超低騒音空気調和機の側面図である。
【図15】図12におけるA−A矢視断面図である。
【図16】図12におけるB−B矢視断面図である。
【図17】本発明の他の実施形態における超低騒音空気調和機を示す平面図である。
【図18】同実施形態における超低騒音空気調和機の正面図である。
【図19】本発明の他の実施形態における超低騒音空気調和機の概略構成を示す摸式図である。
【図20】同実施形態における超低騒音空気調和機の正面図である。
【図21】同実施形態における超低騒音空気調和機の平面図である。
【図22】同実施形態における超低騒音空気調和機の側面図である。
【符号の説明】
1 還気通風路
2 還気口
3 還気ファン
4 還気消音通風路
5 排気口
6 循環気ダンパ
7 給気通風路
8 外気口
9 エアフィルタ
10a 熱交換器
10b 加湿器
11 給気ファン
12 給気口
13 給気消音通風路
14 ケーシング
15 吸音材
RA 還気
EA 排気
OA 外気
SA 給気
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an air conditioner, and more particularly to an ultra-low noise air conditioner for air-conditioning a quiet indoor space such as a music hall or a hospital.
[0002]
[Prior art]
Conventionally, air conditioners maintain the temperature, humidity, and cleanliness of indoor air suitable for room use in order to create a comfortable environment for occupants. Combined with the heating function, the air is supplied to the room in a stable state throughout the year.
[0003]
For this purpose, the air conditioner supplies air to be blown by a blower to a target room through a duct, and sends air into a room from an outlet provided on a ceiling or a wall of the room. A heat medium is passed through the tube group of the coil of the heat exchanger, and the air flowing outside the tube is cooled or heated to adjust the temperature and humidity of the air.
[0004]
However, when the adjusted air is supplied, the noise generated by the blower and the like inside the air conditioner is transmitted to the room together with the blowing of air, which is a problem in air conditioning the quiet indoor spaces such as music halls and hospitals. Met.
[0005]
As a solution to this problem, there is a technique described in Japanese Patent No. 2546185. This means that a return-side ventilation passage (connected to a suction port in the room) and a ventilation-side ventilation passage (connected to an air outlet in the room) of the blower are formed in a cross shape so as to form a noise reduction chamber. The sound muffler is installed in the middle of. With this configuration, the noise generated inside the machine and flowing through the ventilation side ventilation passage and the noise generated inside the room and flowing through the return side ventilation passage mutually influence each other via the partition wall of the passage, and the noise is generated. The noise is reduced.
[0006]
[Problems to be solved by the invention]
However, in the above-described conventional configuration, since the area for accommodating the main part of the air conditioner and the area of the silencing chamber are simply arranged adjacent to each other and integrated, a blower or the like is provided in a limited space area of the main part. A heat exchanger must be provided, and the structure of the return-side ventilation passage and the ventilation-side ventilation passage in the area of the main part becomes complicated, and the ventilation passage between the heat exchanger and the supply air blower becomes narrow, and the air It was not possible to ensure a smooth flow, which could lead to an increase in energy consumption due to an increase in pressure loss. In addition, there is a problem that the area for disposing the blower and the heat exchanger is narrow, so that the blower to be incorporated is limited.
[0007]
An object of the present invention is to solve the above-described problems, and an object of the present invention is to provide an ultra-low noise air conditioner in which noise is suppressed and low-noise air flows smoothly.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the ultra-low noise air conditioner of the present invention according to claim 1 is provided with a return air inlet and an air inlet on one side in a longitudinal direction of a casing, and an exhaust port on the other side. An outside air port is provided, and a return air ventilation path connecting the return air port and the exhaust port in the casing, and a supply air ventilation path connecting the outside air port and the air supply port are provided. In an air conditioner that communicates the start end side of the ventilation path, arranges a return air fan in the return air ventilation path, and arranges an air filter, a heat exchanger, and an air supply fan in the air supply ventilation path,
In one region of the casing, a path from the return air opening of the return air ventilation path to the return air fan is formed as a U-shaped inverted air passage having a sound absorbing material on the inner surface which is inverted at the bottom side of the casing. , Formed along the vertical direction of the casing, the U-shaped bottom of the return air silencing ventilation path forms a thick sound absorbing material, forms a part that receives the collision of airflow and sound waves and absorbs the sound , and the area on the other side of the casing Place a return air fan in
In the upper region of the casing, a path from the air supply fan to the air supply port of the air supply ventilation path is formed in a laterally U-shape that is inverted on the other side of the casing, and has a sound absorbing material on its inner surface. As formed along the longitudinal direction of the casing, the U-shaped bottom of the air supply silencing air passage forms a thicker sound absorbing material to form a part that absorbs air currents and sound waves to absorb sound and absorbs sound . In the area, place an air filter, heat exchanger and air supply fan,
The return air silencing air passage and the return air fan are provided at positions that do not interfere with the air supply silencing air passage in the longitudinal direction and the vertical direction of the casing, and the air supply silencing air passage, the air filter, the heat exchanger, and the air supply fan are provided. In the longitudinal direction and the vertical direction of the casing, the casing is provided at a position that does not interfere with the return air silencing ventilation passage.
[0009]
With the above-described configuration, in a state where the return air fan and the supply air fan are driven, the return air flowing into the return air ventilation passage from the return air system communicating with the target room through the return air port is formed into a U-shaped return air. The air flows out of the exhaust port through the return air fan through the air silencing air passage, and a part of the air flows into the start side of the supply air passage at the end side of the air return passage. The return air that has flowed into the supply air passage merges with the outside air that flows in from the outside air port, passes through an air filter, a heat exchanger, and an air supply fan, passes through a U-shaped air supply silencing ventilation passage, and supplies air. The air flows out of the vent into the air supply system that communicates with the target room.
[0010]
In the meantime, in the return air silencing air passage and the supply air silencing air passage, a sound absorbing material is provided on the inner surface to obtain a silencing effect, and a U-shaped inversion portion in the return air silencing air passage and the air supply silencing air passage, The bend from the ventilation path to the return air fan and the bend from the air supply fan to the air supply muffling ventilation path can effectively muffle the sound by receiving the collision of the airflow and the sound waves colliding with the inner surface.
[0011]
Moreover, since the return air silencing air passage and the supply air silencing air passage do not interfere with each other, the return air silencing air passage should be formed to be long by effectively utilizing the vertical width of the casing. Thus, the air supply / silence ventilation passage can be formed long by effectively utilizing the width of the region in the longitudinal direction of the casing, so that the sound absorption process by the sound absorbing material in both the silencing ventilation passages is lengthened, and the noise reduction effect is enhanced.
[0012]
The return air passage and the supply air passage have few bends, many straight lines, and the direction changes in a two-dimensional range, so that the air flow flows smoothly, and each ventilation passage is different from the conventional structure. The ventilation resistance applied to the airflow flowing through the air is small, the pressure loss is reduced, and the energy consumption of the return air fan and the air supply fan can be suppressed.
[0013]
In the return air silencing air passage and the supply air silencing air passage, a sound absorbing material is obtained by the sound absorbing material on the inner surface, and a thick sound absorbing material is used at the U-shaped bottom to receive the collision of sound waves to enhance the sound absorbing effect. Can be.
[0014]
In the return air silencing ventilation passage and the supply air silencing ventilation passage, the sound absorbing material on the inner surface provides a sound absorbing effect, and the U-shaped bottom is provided with an air layer to receive the collision of sound waves to further enhance the sound absorbing effect. Can be.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 illustrates a schematic structure of a ventilation path in the ultra-low noise air conditioner of the present invention.
[0016]
The return air ventilation passage 1 forms a return air silencing ventilation passage 4 in the first half from the return air opening 2 to the return air fan 3, and a path in the second half from the return air fan 3 to the exhaust outlet 5 and the circulation air damper 6. Make up. The air supply ventilation passage 7 has a front half that forms a path from the outside air opening 8 to the air supply fan 11 through the air filter 9, the heat exchanger 10 a, and the humidifier 10 b, and a rear half that connects the air supply fan 11 to the air supply port 12. The air supply silencing ventilation passage 13 is formed. The end of the return air passage 1 and the start of the supply air passage 7 communicate with each other through a circulating air damper 6.
[0017]
As shown in FIGS. 2 to 10, the return air port 2 and the air supply port 12 are provided on the top surface on one side in the longitudinal direction of the casing 14, and the exhaust port 5 and the outside air port 8 are provided on the other side of the casing 14. On the side.
[0018]
The return air silencing ventilation passage 4 has a U-shape that is inverted on the bottom side of the casing 14, and is located on one side in the longitudinal direction of the casing 14 and on one side in the width direction along the vertical direction of the casing 14. Has formed. The return air silencing ventilation passage 4 is provided with a sound absorbing material 15 over the entire inner surface, and the sound absorbing material 15 at a portion 15a corresponding to the U-shaped bottom is formed thicker than other portions to receive the collision of airflow and sound waves. To absorb sound . The sound absorbing material 15 is made of glass wool or the like, and has a thickness of 200 mm at a portion 15a corresponding to a U-shaped bottom portion and a thickness of 50 mm at other portions. The return air fan 3 is provided on the other side in the longitudinal direction of the casing 14, on one side in the width direction, and in an upper region.
[0019]
The air supply silencing ventilation passage 13 has a laterally U-shape inverted on the other side of the casing 14, and is formed in the region on the upper side of the casing 14 and on the other side in the width direction along the longitudinal direction of the casing 14. ing. The air supply silencing air passage 13 is provided with a sound absorbing material 15 over the entire inner surface in the same manner as the return air silencing air passage 4, and the sound absorbing material 15 at a portion 15 a corresponding to the U-shaped bottom is formed thicker than other portions. In this way , airflow and sound wave collision are received and sound is absorbed . The air filter 9, the heat exchanger 10a, the humidifier 10b, and the air supply fan 11 are arranged below the casing 14 and on the other side in the width direction.
[0020]
Therefore, the return air silencing ventilation passage 4 and the return air fan 3 are located at positions that do not interfere with the air supply silencing air passage 13 in the longitudinal direction and the vertical direction of the casing 14, and the air supply silencing air passage 13 and the air filter 9, the heat exchanger 10a, the humidifier 10b, and the air supply fan 11 are present at positions that do not interfere with the return air silencing air passage 4 in the longitudinal direction and the vertical direction of the casing 14. The air supply silencing ventilation passage 13 is adjacent via a partition.
[0021]
As the air supply fan 11 and the return air fan 3, a double suction centrifugal fan, a single suction centrifugal fan, or a single suction turbo fan without a fan housing can be employed.
[0022]
In addition, a hollow member that forms an air layer can be provided in place of the sound absorbing material 15 at a portion corresponding to the U-shaped bottom of the return air silence ventilation passage 4 and the supply air silence ventilation passage 13.
[0023]
With the above-described configuration, when the return air fan 3 and the supply air fan 11 are driven, the return air RA flowing from the return air system communicating with the target room into the return air ventilation passage 1 through the return air port 2 is: The air passes through the return air silencing air passage 4, passes through the return air fan 3, flows out of the exhaust port 5 to the outside as the exhaust air EA, and a part of the air flows through the circulation air damper 6 at the end side of the return air air passage 1. 7 flows into the starting end side.
[0024]
The return air RA flowing into the air supply ventilation passage 7 merges with the outside air OA flowing from the outside air opening, and passes through the air filter 9, the heat exchanger 10 a, the humidifier 10 b, the air supply fan 11, and the air supply silencing air passage 13. As described above, the air flows out of the air supply port 12 into the target room as air supply SA to the air supply system communicating with the target room.
[0025]
In the meantime, in the return air silencing air passage 4 and the supply air silencing air passage 13, a sound absorbing effect is obtained by the sound absorbing material 15 on the inner surface. At this time, since the return air silence ventilation passage 4 and the supply air silence ventilation passage 13 do not interfere with each other, the return air silence ventilation passage 4 effectively utilizes the vertical width of the casing 14. And the air supply / muffling ventilation passage 13 is formed to be long by effectively utilizing the width of the region in the longitudinal direction of the casing 14, so that the sound absorption process by the sound absorbing material 15 in both the muffling ventilation passages becomes longer, and The effect is higher.
[0026]
In addition, the sound waves of the air current and the noise are supplied to the U-shaped reversal portion in the return air silence ventilation passage 4 and the supply air silence ventilation passage 13, the bent portion from the return air silence ventilation passage 4 to the return air fan 3, At the bent portion from the air fan 11 to the air supply silencing ventilation passage 13, it collides with the inner surface of the casing 14, and the sound absorbing material 15 receives the collision and silences effectively. In particular, at the U-shaped bottom, the thick sound absorbing material 15 receives the collision of the air current and the sound wave, so that the sound can be effectively absorbed.
[0027]
The return air ventilation passage 1 and the supply air ventilation passage 7 have a shape with a small number of bends and a large number of straight portions, and since the direction of the bend changes in a two-dimensional range, the ventilation resistance applied to the airflow flowing through each air passage. , The pressure loss is reduced, and the energy consumption in the return air fan 3 and the supply air fan 11 can be suppressed.
[0028]
As another embodiment of the present invention, FIGS. 11 to 16 show a configuration in which a plug fan (a single suction centrifugal turbofan without a fan housing) is incorporated as the return air fan 3 and the air supply fan 11.
[0029]
As shown in FIGS. 17 and 18, the return air port 2 and the air supply port 12 may be provided on one side surface in the longitudinal direction of the casing 14, and the exhaust port 5 and the external air port 8 may be provided on the casing 14. May be provided on the top surface on the other side in the longitudinal direction.
[0030]
Further, as shown in FIGS. 19 to 22, a single suction centrifugal fan can be incorporated as the return air fan 3 and the air supply fan 11.
[0031]
【The invention's effect】
As described above, according to the present invention, by providing the return air silencing air passage and the supply air silencing air passage at positions where they do not interfere with each other, the return air silencing air passage can effectively reduce the vertical width of the casing. And the air supply silencing air passage can be formed longer by effectively utilizing the longitudinal width of the casing. Can be enhanced. Further, effective sound absorption can be performed by receiving a sound wave collision with a thick sound absorbing material at the U-shaped bottom of the return air silencing air passage and the supply air silencing air passage. Alternatively, an effective sound absorption can be performed by the air layer receiving the collision of the sound wave at the U-shaped bottom. Furthermore, since the return air ventilation path and the supply air ventilation path have few bent portions and many linear portions, and the direction changes in a two-dimensional range, the ventilation resistance and pressure loss given to the airflow are small, and energy consumption can be suppressed. . Moreover, various types of blowers can be used.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a schematic configuration of an ultra-low noise air conditioner according to an embodiment of the present invention.
FIG. 2 is a front view of the ultra-low noise air conditioner according to the embodiment.
FIG. 3 is a plan view of the ultra-low noise air conditioner according to the embodiment.
FIG. 4 is a right side view of the ultra-low noise air conditioner according to the embodiment.
FIG. 5 is a left side view of the ultra-low noise air conditioner according to the embodiment.
6 is a sectional view taken along the line AA in FIG. 3;
FIG. 7 is a sectional view taken along the line CC in FIG. 2;
FIG. 8 is a sectional view taken along the line BB in FIG. 3;
FIG. 9 is a sectional view taken along the line DD in FIG. 2;
10 is a sectional view taken along the line EE in FIG. 2;
FIG. 11 is a schematic diagram showing a schematic configuration of an ultra-low noise air conditioner according to another embodiment of the present invention.
FIG. 12 is a plan view of the ultra-low noise air conditioner according to the embodiment.
FIG. 13 is a front view of the ultra-low-noise air conditioner of the embodiment.
FIG. 14 is a side view of the ultra-low noise air conditioner according to the embodiment.
15 is a sectional view taken along the line AA in FIG.
FIG. 16 is a sectional view taken along the line BB in FIG. 12;
FIG. 17 is a plan view showing an ultra-low noise air conditioner according to another embodiment of the present invention.
FIG. 18 is a front view of the ultra-low-noise air conditioner of the embodiment.
FIG. 19 is a schematic diagram showing a schematic configuration of an ultra-low noise air conditioner according to another embodiment of the present invention.
FIG. 20 is a front view of the ultra-low-noise air conditioner of the embodiment.
FIG. 21 is a plan view of the ultra-low noise air conditioner according to the embodiment.
FIG. 22 is a side view of the ultra-low noise air conditioner according to the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Return air ventilation path 2 Return air opening 3 Return air fan 4 Return air silencing ventilation path 5 Exhaust port 6 Circulating air damper 7 Supply ventilation path 8 Outside air opening 9 Air filter 10a Heat exchanger 10b Humidifier 11 Supply fan 12 Supply Vent 13 Air supply silencing ventilation passage 14 Casing 15 Sound absorbing material RA Return air EA Exhaust OA Outside air SA Air supply

Claims (1)

ケーシングの長手方向の一方側に還気口と給気口を設けるとともに、他方側に排気口と外気口を設け、ケーシング内に還気口と排気口を連通する還気通風路と、外気口と給気口を連通する給気通風路とを設け、還気通風路の終端側と給気通風路の始端側を連通し、還気通風路に還気ファンを配置し、給気通風路にエアフィルタと熱交換器と給気ファンを配置する空気調和機において、
ケーシングの一方側の領域に、還気通風路の還気口から還気ファンに至る経路を、ケーシングの底部側で反転するU字状をなして内面に吸音材を有する還気消音通風路として、ケーシングの上下方向に沿って形成し、還気消音通風路のU字状の底部が吸音材を厚く形成して気流および音波の衝突を受け止めて吸音する部位をなし、ケーシングの他方側の領域に還気ファンを配置し、
ケーシングの上方側の領域に、給気通風路の給気ファンから給気口に至る経路を、ケーシングの他方側で反転する横向きU字状をなして内面に吸音材を有する給気消音通風路として、ケーシングの長手方向に沿って形成し、給気消音通風路のU字状の底部が吸音材を厚く形成して気流および音波の衝突を受け止めて吸音する部位をなし、ケーシングの下方側の領域に、エアフィルタと熱交換器と給気ファンを配置し、
還気消音通風路と還気ファンを、ケーシングの長手方向および上下方向において、給気消音通風路と干渉しない位置に設け、給気消音通風路とエアフィルタと熱交換器と給気ファンを、ケーシングの長手方向および上下方向において、還気消音通風路と干渉しない位置に設けたことを特徴とする超低騒音空気調和機。
A return air port and an air supply port are provided on one side in the longitudinal direction of the casing, and an exhaust port and an outside air port are provided on the other side, and a return air ventilation passage communicating the return air port and the exhaust port in the casing, and an outside air port. An air supply passage that communicates with the air supply port is provided.The end of the return air passage and the start end of the air supply passage are connected to each other, and a return air fan is arranged in the air return passage. In an air conditioner where an air filter, a heat exchanger and an air supply fan are
In one region of the casing, a path from the return air opening of the return air ventilation path to the return air fan is formed as a U-shaped inverted air passage having a sound absorbing material on the inner surface which is inverted at the bottom side of the casing. , Formed along the vertical direction of the casing, the U-shaped bottom of the return air silencing ventilation path forms a thick sound absorbing material, forms a part that receives the collision of airflow and sound waves and absorbs the sound , and the area on the other side of the casing Place a return air fan in
In the upper region of the casing, a path from the air supply fan to the air supply port of the air supply ventilation path is formed in a laterally U-shape that is inverted on the other side of the casing, and has a sound absorbing material on its inner surface. As formed along the longitudinal direction of the casing, the U-shaped bottom of the air supply silencing air passage forms a thicker sound absorbing material to form a part that absorbs air currents and sound waves to absorb sound and absorbs sound . In the area, place an air filter, heat exchanger and air supply fan,
The return air silencing air passage and the return air fan are provided at positions that do not interfere with the air supply silencing air passage in the longitudinal direction and the vertical direction of the casing, and the air supply silencing air passage, the air filter, the heat exchanger, and the air supply fan are provided. An ultra-low noise air conditioner, which is provided in a position that does not interfere with a return air silencing ventilation passage in a longitudinal direction and a vertical direction of a casing.
JP05404698A 1998-03-06 1998-03-06 Ultra low noise air conditioner Expired - Lifetime JP3556087B2 (en)

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CN103925648A (en) * 2014-04-25 2014-07-16 江苏兆胜空调有限公司 Marine low-noise vertical cabinet type air conditioner

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JP2009216898A (en) * 2008-03-10 2009-09-24 Swcc Showa Device Technology Co Ltd Sound insulating device
CN105180303A (en) * 2015-10-08 2015-12-23 江苏兆胜空调有限公司 Low noise unit type air conditioning processor for warehouse

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103925648A (en) * 2014-04-25 2014-07-16 江苏兆胜空调有限公司 Marine low-noise vertical cabinet type air conditioner
CN103925648B (en) * 2014-04-25 2017-01-04 江苏兆胜空调有限公司 A kind of low noise vertical air conditioner machine peculiar to vessel

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