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JP2014201271A - Ship air conditioner - Google Patents

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JP2014201271A
JP2014201271A JP2013081082A JP2013081082A JP2014201271A JP 2014201271 A JP2014201271 A JP 2014201271A JP 2013081082 A JP2013081082 A JP 2013081082A JP 2013081082 A JP2013081082 A JP 2013081082A JP 2014201271 A JP2014201271 A JP 2014201271A
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air
air conditioner
cabin
low
outlet
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展久 冨田
Nobuhisa Tomita
展久 冨田
洋志 上原
Hiroshi Uehara
洋志 上原
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Yanmar Co Ltd
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Yanmar Co Ltd
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Abstract

【課題】空調吹出し口の開口部面積が大きくても、船室に伝播する低周波騒音を減らし、居室騒音を低減する船舶用空調装置を提供する。【解決手段】エアコン本体、及び、該エアコン本体の吹出し口と船室をつなぐ空気通路５を備える船舶用空調装置であって、前記空気通路内に、入口面積よりも出口面積が小さく形成される低周波低減装置１０、及び、該低周波低減装置を通過した調和空気に含まれる高周波騒音を吸音する吸音部１１を設ける。前記低周波低減装置及び吸音部は、前記空気通路から独立した部材として構成されるとともに、前記エアコン本体の吹出し口８に一体化して設けられる。【選択図】図２A ship air conditioner that reduces low-frequency noise transmitted to a cabin and reduces cabin noise even when the opening area of the air-conditioning outlet is large. A marine air conditioner including an air conditioner main body and an air passage 5 that connects a blowout port of the air conditioner main body and a cabin. The air passage has a lower exit area than an inlet area. A frequency reducing device 10 and a sound absorbing unit 11 that absorbs high frequency noise contained in the conditioned air that has passed through the low frequency reducing device are provided. The low-frequency reduction device and the sound absorbing unit are configured as members independent of the air passage and are provided integrally with the air outlet 8 of the air conditioner body. [Selection] Figure 2

Description

本発明は、船舶用空調装置に関する。   The present invention relates to a marine air conditioner.

特許文献１には、エアコン本体から給気ダクトを通して複数の船室に調和空気を供給する船舶用空調装置が開示される。   Patent Document 1 discloses a marine air conditioner that supplies conditioned air from a main body of an air conditioner to a plurality of cabins through an air supply duct.

特開２０１２−１３７２４５号公報JP 2012-137245 A

船室の空調吹出し口の開口面積が大きいと、エアコン本体から発生する低周波騒音がダクトを通して伝播され、船室に放出されてしまうため、居室の騒音につながる。
そこで、本発明は、空調吹出し口の開口面積が大きくても、船室に伝播する低周波騒音を減らし、居室騒音を低減する船舶用空調装置を提供する。 If the opening area of the air conditioning outlet of the cabin is large, low frequency noise generated from the air conditioner body is propagated through the duct and released into the cabin, leading to noise in the cabin.
Therefore, the present invention provides a marine air conditioner that reduces low-frequency noise transmitted to a cabin and reduces cabin noise even when the opening area of the air-conditioning outlet is large.

本発明の船舶用空調装置は、エアコン本体、及び、該エアコン本体の吹出し口と船室をつなぐ空気通路を備える船舶用空調装置であって、前記空気通路内に、入口面積よりも出口面積が小さく形成される低周波低減装置、及び、該低周波低減装置を通過した調和空気に含まれる高周波騒音を吸音する吸音部を設ける。
このように、低周波低減装置の出口面積が絞られていることにより、波長の長い低周波騒音は低周波低減装置を通過しにくく、エアコン本体から空気通路を伝播する低周波騒音をカットすることができる。また、低周波低減装置を通過する際に、調和空気の流速が増加することによって発生する高周波騒音が吸音部で吸収される。従って、エアコン本体から空気通路を介して船室内に伝わる騒音を低減することができる。 The ship air conditioner of the present invention is a ship air conditioner including an air conditioner main body and an air passage connecting the air outlet of the air conditioner main body and the cabin, and has an outlet area smaller than an inlet area in the air passage. A low frequency reducing device to be formed and a sound absorbing portion for absorbing high frequency noise contained in the conditioned air that has passed through the low frequency reducing device are provided.
Thus, by narrowing the exit area of the low-frequency reduction device, low-frequency noise having a long wavelength is difficult to pass through the low-frequency reduction device, and cuts low-frequency noise that propagates through the air passage from the air conditioner body. Can do. In addition, when passing through the low frequency reduction device, high frequency noise generated by increasing the flow velocity of the conditioned air is absorbed by the sound absorbing unit. Therefore, noise transmitted from the air conditioner body to the cabin through the air passage can be reduced.

前記低周波低減装置及び吸音部は、前記空気通路から独立した部材として構成されるとともに、前記エアコン本体の吹出し口に一体化して設けられることが好ましい。
これによれば、既存の船舶に対して防音処理を施す際に、エアコン本体の吹出し口の接続部を交換するだけでよく、空気通路全体を取り替える必要がない。従って、騒音低減構造の導入コストを低く抑えることができる。 It is preferable that the low frequency reduction device and the sound absorbing unit are configured as members independent of the air passage and are provided integrally with the air outlet of the air conditioner body.
According to this, when the soundproofing process is performed on the existing ship, it is only necessary to replace the connection part of the air outlet of the air conditioner body, and it is not necessary to replace the entire air passage. Therefore, the introduction cost of the noise reduction structure can be kept low.

エアコン本体から発生する低周波騒音を低周波低減装置で減らし、低周波低減装置を設けることで発生する高周波騒音を吸音部で吸収することで船内の居室騒音を低減することができる。   The low-frequency noise generated from the air conditioner main body is reduced by the low-frequency reduction device, and the high-frequency noise generated by providing the low-frequency reduction device is absorbed by the sound absorbing portion, so that the cabin noise in the ship can be reduced.

船内の空調装置を示す図である。It is a figure which shows the air conditioner in a ship. 低周波低減装置及び吸音材の配列を示す模式図である。It is a schematic diagram which shows the arrangement | sequence of a low frequency reduction apparatus and a sound-absorbing material. 低周波低減装置及び吸音部の配置の別実施形態を示す図である。It is a figure which shows another embodiment of arrangement | positioning of a low frequency reduction apparatus and a sound absorption part. 船内の空調装置の別実施形態を示す図である。It is a figure which shows another embodiment of the air conditioner in a ship. ダクトダンパーの配置の別実施形態を示す図である。It is a figure which shows another embodiment of arrangement | positioning of a duct damper.

図１に示すように、空調装置１は、船舶の船室２内の空気を調和するものであり、エアコン本体３、及び、エアコン本体３の吹出し口４と各船室２とを繋ぐ給気ダクト５を備える。エアコン本体３には、船内空気及び船外空気を吸入するための吸込ダクト６が接続される。エアコン本体３は、吸込ダクト６から空気を吸い込み、冷媒を利用してその空気を調和空気として吹出し口４から給気ダクト５へ分配して送り出す。   As shown in FIG. 1, the air conditioner 1 harmonizes the air in the cabin 2 of the ship, and includes an air conditioner body 3 and an air supply duct 5 that connects the outlet 4 of the air conditioner body 3 and each cabin 2. Is provided. The air conditioner body 3 is connected to a suction duct 6 for sucking inboard air and outboard air. The air conditioner body 3 sucks air from the suction duct 6 and distributes the air as conditioned air to the air supply duct 5 from the outlet 4 using the refrigerant.

調和空気の通路となる給気ダクト５内には、船室２内に吹き出す風量を調整するダクトダンパー７が設けられる。ダクトダンパー７によって風量調整された調和空気が船室２に開口する吹出し口８を介して室内に噴出される。
エアコン本体３から給気ダクト５に送り出された調和空気は、ダクトダンパー７で風量を調整され、船室２に設けられた吹出し口８から室内に吹き出される。 A duct damper 7 that adjusts the amount of air blown into the cabin 2 is provided in the air supply duct 5 serving as a passage for conditioned air. The conditioned air whose air volume has been adjusted by the duct damper 7 is blown into the room through the air outlet 8 that opens into the cabin 2.
The conditioned air sent from the air conditioner body 3 to the air supply duct 5 is adjusted in air volume by the duct damper 7 and blown into the room from the outlet 8 provided in the cabin 2.

エアコン本体３からは、本体の運転に伴って低周波騒音が発生している。この低周波騒音は、上記の調和空気とともに給気ダクト５を通して伝播される。例えば、低周波対策を持たないエアコン本体で、かつ、空調吹出し口の開口面積が大きい場合は、騒音として室内に放出されてしまう。   Low-frequency noise is generated from the air conditioner body 3 along with the operation of the body. This low frequency noise is propagated through the air supply duct 5 together with the conditioned air. For example, if the air conditioner main body has no low frequency countermeasure and the opening area of the air conditioning outlet is large, it will be emitted into the room as noise.

本実施形態では、図２に示すように、低周波対策として給気ダクト５内の上流側に低周波低減装置１０、その下流側に吸音部１１を設けている。
低周波低減装置１０は、入口１２の開口面積よりも出口１３の開口面積が小さくなるように形成されており、調和空気の流れる方向に従って通路断面積が小さくなる絞り形状を有する。このため、給気ダクト５から伝播してきた低周波騒音は、出口１３から放出され難くなる。 In this embodiment, as shown in FIG. 2, as a low frequency countermeasure, a low frequency reducing device 10 is provided on the upstream side in the air supply duct 5, and a sound absorbing unit 11 is provided on the downstream side thereof.
The low-frequency reduction device 10 is formed so that the opening area of the outlet 13 is smaller than the opening area of the inlet 12, and has a throttle shape in which the passage cross-sectional area decreases in accordance with the direction in which the conditioned air flows. For this reason, the low-frequency noise that has propagated from the air supply duct 5 is less likely to be emitted from the outlet 13.

一方、低周波低減装置１０は、出口１３が狭くなっているため、調和空気の流速が速くなる。そのため、出口１３からは高周波騒音（気流音）が発生する。
しかし、低周波低減装置１０の風下に吸音部１１を設けることで、低周波低減装置１０に起因する高周波騒音を吸収する。具体的には、ダクト内壁面にグラスウールや発泡ウレタンなどの吸音材を貼り、吸音処理をすることで吸音部１１を構成している。そして、気流音が発生した状態の調和空気が吸音部１１を通過する際に、高周波が吸音材に吸収され、高周波騒音が低減される。 On the other hand, since the low frequency reduction device 10 has a narrow outlet 13, the flow rate of conditioned air is increased. Therefore, high frequency noise (airflow sound) is generated from the outlet 13.
However, the high frequency noise resulting from the low frequency reduction device 10 is absorbed by providing the sound absorbing unit 11 on the lee side of the low frequency reduction device 10. Specifically, the sound absorbing section 11 is configured by attaching a sound absorbing material such as glass wool or foamed urethane to the inner wall surface of the duct and performing a sound absorbing process. And when the conditioned air in the state where the airflow sound is generated passes through the sound absorbing unit 11, the high frequency is absorbed by the sound absorbing material, and the high frequency noise is reduced.

以上のように、エアコン本体３から給気ダクト５を通じて伝播される低周波を低周波低減装置１０で減衰させてカットし、かつ、低周波低減装置１０で発生する高周波を吸音部１１で吸収している。これにより、船室２に開口面積の大きい吹出し口８を取り付けた場合でもエアコン本体３の低周波騒音を低減し、快適な居室空間を提供することができる。   As described above, the low frequency propagated from the air conditioner body 3 through the air supply duct 5 is attenuated and cut by the low frequency reducing device 10, and the high frequency generated by the low frequency reducing device 10 is absorbed by the sound absorbing unit 11. ing. Thereby, even when the air outlet 8 having a large opening area is attached to the cabin 2, low-frequency noise of the air conditioner body 3 can be reduced and a comfortable living room space can be provided.

給気ダクト５の内部とは、エアコン本体３の吹出し口４と船室２の吹出し口８とを接続する調和空気が流れる通路の内部のことを指し、吹出し口４の直後部分及び吹出し口８の直前部分を含む。   The inside of the air supply duct 5 refers to the inside of a passage through which conditioned air that connects the air outlet 4 of the air conditioner body 3 and the air outlet 8 of the cabin 2 flows, and the portion immediately after the air outlet 4 and the air outlet 8 Includes the previous part.

図３に示すように、低周波低減装置１０及び吸音部１１を給気ダクト５の分岐前に配置し、その下流側に位置するすべての船室２に効果が波及するように配置することで、低周波低減装置１０及び吸音部１１を含む騒音低減構造を複数箇所に配置する必要がなくなる。
さらに、低周波低減装置１０及び吸音部１１を給気ダクト５から独立した部材として構成し、かつ、低周波低減装置１０及び吸音部１１がエアコン本体３の吹出し口４と一体化して設けることが好ましい。このような構成により、騒音発生源に近い位置で騒音をカットして騒音低減効果を大きくすることができるとともに、既存船への適用の際のコストを低減することができる。特に、エアコン本体３と近い箇所に上記の騒音防止構造（低周波低減装置１０及び吸音部１１）を配置することで、既存の船舶における空調装置の騒音低減を図る際に、ダクトの根元部分を交換するだけで所望の効果を得ることができ、低コストでの施工が可能である。 As shown in FIG. 3, the low-frequency reduction device 10 and the sound absorbing unit 11 are arranged before the air supply duct 5 is branched, and are arranged so that the effect spreads to all the cabins 2 located on the downstream side thereof. It is not necessary to arrange the noise reduction structure including the low frequency reduction device 10 and the sound absorbing unit 11 at a plurality of locations.
Furthermore, the low frequency reduction device 10 and the sound absorption unit 11 are configured as members independent of the air supply duct 5, and the low frequency reduction device 10 and the sound absorption unit 11 are provided integrally with the air outlet 4 of the air conditioner body 3. preferable. With such a configuration, it is possible to increase the noise reduction effect by cutting noise at a position close to the noise generation source, and it is possible to reduce the cost when applied to an existing ship. In particular, when the noise prevention structure (the low frequency reduction device 10 and the sound absorbing unit 11) is disposed near the air conditioner main body 3, the root portion of the duct is reduced when the noise of the air conditioner in an existing ship is reduced. A desired effect can be obtained only by replacement, and construction at low cost is possible.

また、図４に示すように、給気ダクト５内の一系統に複数の低周波低減装置１０及び吸音部１１を設けてもよい。
さらに、ダクトダンパー７は、給気ダクト５内であればどこに配置してもよい。図１、図３及び図４に示すように、ダクトにつながる船室の風量を個別に調整できる位置に配置してもよいし、図５に示すように、同一系統のダクトに送風する風量を一括で調整できる位置に配置してもよい。 Further, as shown in FIG. 4, a plurality of low frequency reduction devices 10 and sound absorbing portions 11 may be provided in one system in the air supply duct 5.
Further, the duct damper 7 may be disposed anywhere within the air supply duct 5. As shown in FIG. 1, FIG. 3 and FIG. 4, it may be arranged at a position where the air volume of the cabin connected to the duct can be individually adjusted, or as shown in FIG. You may arrange in the position which can be adjusted with.

１：空調装置、３：エアコン本体、４：吹出し口、５：給気ダクト（空気通路）、７：ダクトダンパー、８：吹出し口、１０：低周波低減装置、１１：吸音部、１２：入口、１３：出口   1: air conditioner, 3: air conditioner main body, 4: air outlet, 5: air supply duct (air passage), 7: duct damper, 8: air outlet, 10: low frequency reducing device, 11: sound absorbing section, 12: inlet , 13: Exit

Claims (2)

エアコン本体、及び、該エアコン本体の吹出し口と船室をつなぐ空気通路を備える船舶用空調装置であって、
前記空気通路内に、入口面積よりも出口面積が小さく形成される低周波低減装置、及び、該低周波低減装置を通過した調和空気に含まれる高周波騒音を吸音する吸音部を設けることを特徴とする船舶用空調装置。 An air conditioner for a ship provided with an air conditioner main body and an air passage connecting the air outlet of the air conditioner main body and the cabin,
A low frequency reducing device having an outlet area smaller than an inlet area and a sound absorbing portion for absorbing high frequency noise contained in conditioned air that has passed through the low frequency reducing device are provided in the air passage. Ship air conditioner. 前記低周波低減装置及び吸音部は、前記空気通路から独立した部材として構成されるとともに、前記エアコン本体の吹出し口に一体化して設けられる請求項１に記載の船舶用空調装置。   2. The ship air conditioner according to claim 1, wherein the low frequency reduction device and the sound absorption unit are configured as members independent of the air passage and are provided integrally with the air outlet of the air conditioner body.
JP2013081082A 2013-04-09 2013-04-09 Ship air conditioner Pending JP2014201271A (en)

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CN107902066A (en) * 2017-12-13 2018-04-13 泰兴市汇辰过滤器制造有限公司 A kind of ventilation denoising device in ship cabin

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Publication number Priority date Publication date Assignee Title
KR20170004370A (en) * 2015-07-02 2017-01-11 대우조선해양 주식회사 Air Conditioning Equipment for Vessel and Offshore Structures
KR102314985B1 (en) * 2015-07-02 2021-10-21 대우조선해양 주식회사 Air Conditioning Equipment for Vessel and Offshore Structures
CN107902066A (en) * 2017-12-13 2018-04-13 泰兴市汇辰过滤器制造有限公司 A kind of ventilation denoising device in ship cabin

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