JPH0618083A - Air-conditioning machine - Google Patents

Air-conditioning machine

Info

Publication number
JPH0618083A
JPH0618083A JP4177964A JP17796492A JPH0618083A JP H0618083 A JPH0618083 A JP H0618083A JP 4177964 A JP4177964 A JP 4177964A JP 17796492 A JP17796492 A JP 17796492A JP H0618083 A JPH0618083 A JP H0618083A
Authority
JP
Japan
Prior art keywords
chamber
duct
discharging port
sound
discharge port
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.)
Pending
Application number
JP4177964A
Other languages
Japanese (ja)
Inventor
Shinichi Abe
伸一 阿部
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP4177964A priority Critical patent/JPH0618083A/en
Publication of JPH0618083A publication Critical patent/JPH0618083A/en
Pending legal-status Critical Current

Links

Landscapes

  • Duct Arrangements (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

PURPOSE:To permit the reduction of noise generated out of a discharging port by providing a chamber, larger than the discharging port, near the discharging port at the tip end of the ventilating passage of a duct. CONSTITUTION:When the operation of an air-conditioning machine 1 is started, air, sent out of a fan 3, flows through the inside of a duct and sound is generated. Sound wave has straight-going property and, therefore, sound wave travels straightly through the inside of the duct 4. Then, a chamber 6, larger than a discharging port 5, is provided near the discharging port 5 to hit the sound wave, advanced straightly through the duct 4, against the wall of the chamber 6 and attenuate the sound in the chamber 6. When the chamber 6 is same as or smaller than the discharging port 5, sound deadening effect is small and, therefore, the chamber 6, larger than the discharging port 5 as much as possible, is provided. Thus, the noise, generated out of the discharging port can be reduced.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、ダクト付き空気調和機
に係り、ダクトの静音構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner with a duct and relates to a silent structure of the duct.

【０００２】[0002]

【従来の技術】従来品は、実開昭５２−３８５３８号
は、ダクト内を多重構造することにより騒音の低減図っ
ていたが、ダクト内すべてを多重構造にしているため高
価で構造が複雑になる問題があった。2. Description of the Related Art Conventionally, in Japanese Utility Model Laid-Open No. 52-38538, noise was reduced by making a multiple structure inside the duct, but since the inside of the duct was made multiple structure, it was expensive and the structure was complicated. There was a problem.

【０００３】[0003]

【発明が解決しようとする課題】[Problems to be Solved by the Invention]

【０００４】[0004]

【課題を解決するための手段】上記目的はダクトの通風
路の先端の吐出口近傍に吐出口より大きいチャンバーを
設けることにより達成される。The above object can be achieved by providing a chamber larger than the discharge port in the vicinity of the discharge port at the tip of the ventilation passage of the duct.

【０００５】[0005]

【作用】音波は直進性をもっているため、ダクト内を直
進してくる。そこで、吐出口近傍に吐出口より大きいチ
ャンバーを設け、ダクト内を直進してくる音波をチャン
バーの壁に当てて、音を減衰させる。チャンバーが吐出
口より同じか小さいと消音効果は小さいので、吐出口よ
り大きいチャンバーを設ける。また、吐出口より大きい
内壁と外壁の有する二重構造のチャンバーを設け、この
内壁が多数の孔の明いている吸音材により構成すること
により、吸音材とチャンバー外壁の間の空気層にて音を
吸音し減衰させることにより達成される。[Operation] Since the sound wave has a straight traveling property, it travels straight in the duct. Therefore, a chamber larger than the discharge port is provided in the vicinity of the discharge port, and a sound wave traveling straight in the duct is applied to the wall of the chamber to attenuate the sound. If the chamber is the same as or smaller than the discharge port, the muffling effect is small, so a chamber larger than the discharge port is provided. In addition, by providing a double-structured chamber having an inner wall and an outer wall that are larger than the discharge port, and the inner wall is made of a sound absorbing material with many holes, sound is generated in the air layer between the sound absorbing material and the chamber outer wall. This is achieved by absorbing and damping the sound.

【０００６】[0006]

【実施例】以下、本発明の一実施例を図１、図２、図
３、図４により説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1, 2, 3, and 4.

【０００７】空気調和機１は熱交換器２、送風機３より
構成されダクト４は空気調和機１の本体外に取り付けら
れ、ダクト４の先にチャンバー５を介して吐出口６に接
続されている構成となっている。The air conditioner 1 comprises a heat exchanger 2 and a blower 3, and a duct 4 is attached to the outside of the main body of the air conditioner 1 and connected to a discharge port 6 through a chamber 5 at the tip of the duct 4. It is composed.

【０００８】上記構成において空気調和機１の運転を開
始すると送風機３より送り出される空気がダクト４内を
流動し音が発生する。音波は直進性をもっているため、
ダクト４内を直進してくる。そこで、吐出口５近傍に吐
出口５より大きいチャンバー６を設け、ダクト４内を直
進してくる音波をチャンバー６の壁に当てて、チャンバ
ー６内で音を減衰させる。チャンバー６が吐出口５より
同じか小さいと消音効果は小さいので、吐出口５よりで
きるだけ大きいチャンバー６を設ける。When the operation of the air conditioner 1 is started in the above structure, the air sent from the blower 3 flows in the duct 4 and a sound is generated. Since the sound wave has a straightness,
Go straight in the duct 4. Therefore, a chamber 6 larger than the discharge port 5 is provided in the vicinity of the discharge port 5, and a sound wave traveling straight in the duct 4 is applied to the wall of the chamber 6 to attenuate the sound in the chamber 6. If the chamber 6 is the same as or smaller than the discharge port 5, the muffling effect is small. Therefore, the chamber 6 as large as possible than the discharge port 5 is provided.

【０００９】図２、図３は、本発明の第２実施例を示す
もので、吐出口７より大きい内壁８と外壁９の有する二
重構造のチャンバーを設け、この内壁８が多数の孔の明
いている吸音材により構成されている。吸音材とチャン
バーの外壁９の間の空気層にて音を吸音し減衰させるこ
とにより騒音を低減することが出来る。内壁８と外壁９
の隙間は、２０mmから１００mmあり隙間が大きいほど低
周波の騒音を低減することが出来る。尚、吸音材とは金
属板に多数の***を設けたパンチングプレートやエキス
パンドメタルやグラスウール及び***を設けた樹脂成形
品のようなものである。また、図４のように、チャンバ
ー１０をダクト１１の反対側に大きく伸ばしたものも同
様の消音効果を得ることが出来る。FIGS. 2 and 3 show a second embodiment of the present invention, in which a chamber having a double structure having an inner wall 8 and an outer wall 9 larger than the discharge port 7 is provided, and the inner wall 8 has a large number of holes. It is composed of a bright sound absorbing material. Noise can be reduced by absorbing and damping the sound in the air layer between the sound absorbing material and the outer wall 9 of the chamber. Inner wall 8 and outer wall 9
The gap is 20 mm to 100 mm, and the larger the gap, the more the low frequency noise can be reduced. The sound absorbing material is a punching plate in which a large number of small holes are formed in a metal plate, expanded metal, glass wool, or a resin molded product in which small holes are formed. Further, as shown in FIG. 4, the chamber 10 that is greatly extended to the opposite side of the duct 11 can also obtain the same sound deadening effect.

【００１０】[0010]

【発明の効果】本発明によれば、ダクトの内部を空気が
流動することにより発生した音を、吐出口より大きいチ
ャンバーを設けることにより、吐出口から出る騒音を低
減させる効果がある。さらに、チャンバーを二重構造に
することにより、よりいっそう騒音を低減させることが
出来る。According to the present invention, the sound generated by the air flowing inside the duct is provided with a chamber larger than the discharge port, so that the noise emitted from the discharge port can be reduced. Furthermore, by making the chamber a double structure, it is possible to further reduce noise.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の一実施例における断面図である。FIG. 1 is a sectional view of an embodiment of the present invention.

【図２】本発明の第２実施例における正面断面図であ
る。FIG. 2 is a front sectional view of a second embodiment of the present invention.

【図３】本発明の第２実施例における平面断面図であ
る。FIG. 3 is a plan sectional view of a second embodiment of the present invention.

【図４】本発明のその他の実施例における断面図であ
る。FIG. 4 is a sectional view of another embodiment of the present invention.

【符号の説明】[Explanation of symbols]

１…空気調和機 ２…熱交換器 ３…送風機 ４…ダクト ５…吐出口 ６…チャンバー ７…吐出口 ８…内壁 ９…外壁 １０…チャンバー １１…ダクト 1 ... Air conditioner 2 ... Heat exchanger 3 ... Blower 4 ... Duct 5 ... Discharge port 6 ... Chamber 7 ... Discharge port 8 ... Inner wall 9 ... Outer wall 10 ... Chamber 11 ... Duct

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】空気調和機本体内に熱交換器及び送風機を
備え、前記本体外に送風用のダクトを設けた空気調和機
において、吐出口近傍に吐出口より大きいチャンバーを
設けたことを特徴とした空気調和機。1. An air conditioner having a heat exchanger and a blower inside a main body of the air conditioner, and a duct for blowing air provided outside the main body, wherein a chamber larger than the discharge port is provided near the discharge port. And an air conditioner. 【請求項２】請求項１の空気調和機において、吐出口近
傍に吐出口より大きい内壁と外壁の有する二重構造のチ
ャンバーを設け、この内壁が多数の孔の明いている吸音
材により構成されていることを特徴とした空気調和機。2. The air conditioner according to claim 1, wherein a chamber having a double structure having an inner wall and an outer wall larger than the discharge port is provided in the vicinity of the discharge port, and the inner wall is made of a sound absorbing material having many holes. An air conditioner that is characterized by
JP4177964A 1992-07-06 1992-07-06 Air-conditioning machine Pending JPH0618083A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4177964A JPH0618083A (en) 1992-07-06 1992-07-06 Air-conditioning machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4177964A JPH0618083A (en) 1992-07-06 1992-07-06 Air-conditioning machine

Publications (1)

Publication Number Publication Date
JPH0618083A true JPH0618083A (en) 1994-01-25

Family

ID=16040159

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4177964A Pending JPH0618083A (en) 1992-07-06 1992-07-06 Air-conditioning machine

Country Status (1)

Country Link
JP (1) JPH0618083A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5669844A (en) * 1994-11-16 1997-09-23 Toyota Jidosha Kabushiki Kaisha Lubrication system for a parallel-axis differential
JP2015004448A (en) * 2013-06-19 2015-01-08 トヨタホーム株式会社 Air conditioning installation for building
JP2020041765A (en) * 2018-09-12 2020-03-19 パナソニックＩｐマネジメント株式会社 Humidifying unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5669844A (en) * 1994-11-16 1997-09-23 Toyota Jidosha Kabushiki Kaisha Lubrication system for a parallel-axis differential
JP2015004448A (en) * 2013-06-19 2015-01-08 トヨタホーム株式会社 Air conditioning installation for building
JP2020041765A (en) * 2018-09-12 2020-03-19 パナソニックＩｐマネジメント株式会社 Humidifying unit

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