JP2015187522A - Duct air conditioner - Google Patents

Duct air conditioner Download PDF

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JP2015187522A
JP2015187522A JP2014065106A JP2014065106A JP2015187522A JP 2015187522 A JP2015187522 A JP 2015187522A JP 2014065106 A JP2014065106 A JP 2014065106A JP 2014065106 A JP2014065106 A JP 2014065106A JP 2015187522 A JP2015187522 A JP 2015187522A
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duct
wall
air conditioner
indoor unit
type air
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JP6195114B2 (en
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拓 小椋
Taku Ogura
拓 小椋
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Fujitsu General Ltd
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Abstract

PROBLEM TO BE SOLVED: To improve the noise suppression effect even if a lower duct is short.SOLUTION: A duct air conditioner comprises: an indoor unit 110 in which a heat exchanger and a blower fan are disposed, that includes a blow-off opening 111 provided in an upper surface and an intake opening 112 provided in a lower surface, and that is disposed in a wall; an upper duct 120 connecting the blow-off opening 111 of the indoor unit 110 to an upper grille 130; and a lower duct 140 connecting the intake opening 112 of the indoor unit 110 to a lower grille 160. The lower duct 140 is a rectangular parallelepiped shape whose cross-section includes major sides 144 and minor sides 145. An interior of the lower duct 140 is divided into two air flow passages 140A and 140B in a direction of the minor sides 145 by a partition wall 143, and sound absorbers 143 are bonded to inner walls of the respective air flow passages 140A and 140B.

Description

本発明は、ダクト型空気調和機に関する。   The present invention relates to a duct type air conditioner.

屋内の壁の背面側（屋内に面する壁面の反対側）に縦姿勢で埋込設置されるダクト型空気調和機は、家屋の新築時あるいはリフォーム時に構築される。このダクト型空気調和機は、屋内の壁の背面側に熱交換器と送風ファンを備えた室内機を配置するとともに、その室内機の上方に上部ダクトを配置し、下方に下部ダクトを配置して、上部ダクトの上端を壁面の上方に取り付けた吹出グリルに接続し、下部ダクトの下端を同じ壁面の下方に取り付けた吸込グリルに接続して、構築されている。上部ダクト内および下部ダクト内にはそれぞれ吸音材が貼付されている。   A duct-type air conditioner that is embedded in a vertical posture on the back side of an indoor wall (opposite the wall facing the indoor side) is constructed when a house is newly constructed or renovated. In this duct type air conditioner, an indoor unit having a heat exchanger and a blower fan is disposed on the back side of an indoor wall, an upper duct is disposed above the indoor unit, and a lower duct is disposed below. Then, the upper end of the upper duct is connected to a blowing grill attached above the wall surface, and the lower end of the lower duct is connected to a suction grill attached below the same wall surface. A sound absorbing material is attached to each of the upper duct and the lower duct.

そして、室内機のメンテナンスのために、室内機が配置される高さの壁にメンテナンス扉を形成して、このメンテナンス扉を開くことで、壁の背面側の室内機の例えば電装品箱のメンテナンスができるようにしていた。   For maintenance of the indoor unit, a maintenance door is formed on the wall at the height where the indoor unit is arranged, and the maintenance door is opened, for example, maintenance of the electrical component box of the indoor unit on the back side of the wall. I was able to.

その室内機の床面からの高さは、作業員がメンテナンス作業を行い易いように、作業員のほぼ胸位置の高さに設定される。前記した吹出グリルはできるだけ高い位置に配置され、吸込グリルはできるだけ低い位置に配置されるが、室内機の配置高さは、上記したメンテナンス性の確保の観点から、その吹出グリルと吸込グリルの中間位置よりも下側になる。   The height of the indoor unit from the floor surface is set to the height of the chest position of the worker so that the worker can easily perform the maintenance work. The above-mentioned blowing grill is arranged at a position as high as possible, and the suction grill is arranged at a position as low as possible, but the arrangement height of the indoor unit is intermediate between the blowing grill and the suction grille from the viewpoint of ensuring the maintainability described above. Below the position.

このため、上部ダクトの長さに比べて下部ダクトの長さが短くなるので、室内機の送風ファンの騒音が、下部ダクト内に貼付した吸音材で十分に吸収されないうちに吸込口から洩れ出る問題があった。壁の背面側に設置するダクト型空気調和機については、特許文献１に記載がある。   For this reason, since the length of the lower duct is shorter than the length of the upper duct, the noise of the blower fan of the indoor unit leaks out from the suction port before it is sufficiently absorbed by the sound absorbing material stuck in the lower duct. There was a problem. Patent Document 1 describes a duct type air conditioner installed on the back side of a wall.

特開平０７−２３３９６６号公報Japanese Patent Application Laid-Open No. 07-233966

下部ダクトから漏れ出る騒音を抑制するには、内部に吸音材を貼付した下部ダクトを長くすればよいが、メンテナンスの関係からその長さには限界があった。   In order to suppress the noise leaking from the lower duct, the lower duct with the sound absorbing material affixed inside may be lengthened, but there is a limit to the length due to maintenance.

本発明の目的は、下部ダクトの長さが短くても騒音抑制効果を飛躍的に高めることができるようにしたダクト型空気調和機を提供することである。   An object of the present invention is to provide a duct type air conditioner capable of dramatically improving the noise suppression effect even when the length of the lower duct is short.

上記目的を達成するために、請求項１にかかる発明は、熱交換器と送風ファンが配置され、上部と下部のいずれか一方に吹出開口が設けられ、前記上部と下部のいずれか他方に吸込開口が設けられ、壁の背面側に配置される室内機と、該室内機の前記吹出開口と前記吸込開口のいずれか一方と前記壁に設けられた上部グリルとの間を前記壁の背面側において接続する上部ダクトと、前記室内機の前記吹出開口と前記吸込開口のいずれか他方と前記壁に設けられた下部グリルとの間を前記壁の背面側において接続する下部ダクトとを備え、前記上部ダクトおよび前記下部ダクトの内壁にそれぞれ吸音材が貼付されたダクト型空気調和機において、前記下部ダクトは、上下方向の空気流通路が複数になるように内部が複数個に分割され、該複数個に分割されたそれぞれの前記空気流通路の内壁に前記吸音材が貼付されていることを特徴とする。
請求項２にかかる発明は、請求項１に記載のダクト型空気調和機において、前記下部ダクトは、上下方向の長さが前記上部ダクトよりも短く設定されていることを特徴とする。
請求項３にかかる発明は、請求項１又は２に記載のダクト型空気調和機において、前記下部ダクトの横断面は長辺と短辺を有する直方体形状であり、前記複数の空気流通路は、前記短辺の方向に複数個に分割されることで形成されていることを特徴とする。
請求項４にかかる発明は、請求項１、２又は３に記載のダクト型空気調和機において、前記吸音材は、グラスウールからなることを特徴とする。 In order to achieve the above object, according to a first aspect of the present invention, a heat exchanger and a blower fan are arranged, a blow-off opening is provided in one of the upper part and the lower part, and a suction is provided in the other of the upper part and the lower part. An indoor unit provided with an opening and disposed on the back side of the wall, and a back side of the wall between any one of the outlet opening and the suction opening of the indoor unit and the upper grill provided on the wall An upper duct connected at the bottom, and a lower duct connecting the other grille opening of the indoor unit and the lower grille provided on the wall on the back side of the wall, In the duct-type air conditioner in which sound absorbing materials are respectively attached to the inner walls of the upper duct and the lower duct, the lower duct is divided into a plurality of parts so that there are a plurality of vertical air flow passages. Pieces Wherein the sound absorbing material in each of the divided inner wall of the air passage was is attached.
According to a second aspect of the present invention, in the duct type air conditioner according to the first aspect, the length of the lower duct is set shorter than that of the upper duct.
The invention according to claim 3 is the duct type air conditioner according to claim 1 or 2, wherein the lower duct has a rectangular parallelepiped cross section having a long side and a short side, and the plurality of air flow passages are: It is formed by being divided into a plurality in the direction of the short side.
The invention according to claim 4 is the duct type air conditioner according to claim 1, 2, or 3, wherein the sound absorbing material is made of glass wool.

本発明によれば、下部ダクトは、上下方向の空気流通路が複数になるように内部が複数個に分割され、該複数個に分割されたそれぞれの空気流通路の内壁に吸音材が貼付されているので、その吸音面積が増大するため、下部ダクトの長さが短くても騒音抑制効果が大きくなる。また、下部ダクトの長さを短かくしても騒音を抑制できることから、室内機を十分下方に配置することができるので、そのメンテナンス性を高めることが可能となる。また、下部ダクトの長さを短くすることができるので、その分だけ上部ダクトの上下方向の長さを長くできることから、上部ダクトにおける騒音抑制効果も大きくなる。   According to the present invention, the lower duct is divided into a plurality of parts so that there are a plurality of vertical air flow passages, and a sound absorbing material is attached to the inner wall of each of the divided air flow passages. Therefore, since the sound absorption area increases, the noise suppression effect is increased even if the length of the lower duct is short. In addition, since the noise can be suppressed even if the length of the lower duct is shortened, the indoor unit can be disposed sufficiently downward, so that the maintainability can be improved. In addition, since the length of the lower duct can be shortened, the length of the upper duct in the vertical direction can be increased by that much, and the noise suppression effect in the upper duct is also increased.

本発明の実施例のダクト型空気調和機の正面図である。It is a front view of the duct type air conditioner of the Example of this invention. 図１のダクト型空気調和機の下部ダクトの斜視図である。It is a perspective view of the lower duct of the duct type air conditioner of FIG. 図１のダクト型空気調和機の下部ダクトの分解斜視図である。It is a disassembled perspective view of the lower duct of the duct type air conditioner of FIG.

図１に本発明の実施例のダクト型空気調和機１００を示す。本実施例のダクト型空気調和機１００は、天井２００と床面３００の間の壁４００の背面側に配置される。なお、図１は壁４００の背面側に配置されたダクト型空気調和機１００を壁４００の室内側から見た状態を示している。ダクト型空気調和機１００は、熱交換器と送風ファンが筐体内に配置された室内機１１０と、その室内機１１０の上面の吹出開口１１１に接続されるフレキシブルな吹出用の上部ダクト１２０と、その上部ダクト１２０の上端が接続され壁４００の上部に取り付けられる上部グリル（吹出グリル）１３０と、室内機１１０の下面の吸込開口１１２に接続される吸込用の下部ダクト１４０と、その下部ダクト１４０の下端に接続されるアダプタ１５０（図２、図３参照）と、壁４００の下部に取り付けられそのアダプタ１５０に接続される下部グリル（吸込グリル）１６０とを備える。図１に点線で示した４１０は壁４００に設けられたメンテナンス扉であり、室内機１１０に対応する高さに設けられている。上部ダクト１２０および下部ダクト１４０の内壁には、それぞれ吸音材（例えばグラスウール）が貼付されているが、下部ダクト１４０の吸音材については後に詳述する。   FIG. 1 shows a duct type air conditioner 100 according to an embodiment of the present invention. The duct type air conditioner 100 according to the present embodiment is disposed on the back side of the wall 400 between the ceiling 200 and the floor surface 300. FIG. 1 shows a state in which the duct type air conditioner 100 arranged on the back side of the wall 400 is viewed from the indoor side of the wall 400. The duct type air conditioner 100 includes an indoor unit 110 in which a heat exchanger and a blower fan are disposed in a housing, a flexible upper duct 120 connected to a blowout opening 111 on the upper surface of the indoor unit 110, An upper grill (blowing grill) 130 connected to the upper portion of the wall 400 with the upper end of the upper duct 120 connected thereto, a suction lower duct 140 connected to the suction opening 112 on the lower surface of the indoor unit 110, and the lower duct 140 Adapter 150 (see FIGS. 2 and 3) connected to the lower end of the wall 400 and a lower grill (suction grill) 160 attached to the lower part of the wall 400 and connected to the adapter 150. A maintenance door 410 indicated by a dotted line in FIG. 1 is a maintenance door provided on the wall 400 and provided at a height corresponding to the indoor unit 110. A sound absorbing material (for example, glass wool) is affixed to the inner walls of the upper duct 120 and the lower duct 140. The sound absorbing material of the lower duct 140 will be described in detail later.

アダプタ１５０は、図２、図３に示すように、下部グリル１６０から水平方向に吸い込んだ空気を垂直上方に導くために、下部グリル１６０への取付側（正面）と下部ダクト１４０への取付側（上面）がそれぞれ開口した形状に形成されている。このアダプタ１５０は必要に応じて設けられる。   As shown in FIGS. 2 and 3, the adapter 150 has an attachment side (front face) to the lower grill 160 and an attachment side to the lower duct 140 in order to guide the air sucked in horizontally from the lower grill 160 vertically upward. Each (upper surface) is formed in an open shape. The adapter 150 is provided as necessary.

下部ダクト１４０は、横断面が長辺１４４と短辺１４５を有する直方体形状であり、正面の上部側には、着脱可能なメンテナンス蓋１４１が取り付けられている。また、内部には横断面を短辺１４５の方向に２分割するように縦姿勢配置の仕切板１４２が設けられ、これにより短辺１４５の方向が２分割された空気流通路１４０Ａ，１４０Ｂが形成されている。２分割された空気流通路１４０Ａ，１４０Ｂには、その内壁の全面に吸音材１４３が貼付されている。なお、図２では図示が不明瞭になるおそれがあるので、この吸音材１４３の図示を省略している。また、仕切板１４２におけるメンテナンス蓋１４１に対応する部分（図示せず）は切除され、その切除部分に電装品箱（図示せず）が配置されてもよい。   The lower duct 140 has a rectangular parallelepiped shape having a long side 144 and a short side 145 in the cross section, and a removable maintenance lid 141 is attached to the upper side of the front. In addition, a partition plate 142 arranged in a vertical posture is provided so as to divide the cross section into two in the direction of the short side 145, thereby forming air flow passages 140A and 140B in which the direction of the short side 145 is divided into two. Has been. A sound absorbing material 143 is attached to the entire inner wall of the two divided air flow passages 140A and 140B. In addition, in FIG. 2, since illustration may become indistinct, illustration of this sound-absorbing material 143 is omitted. Further, a portion (not shown) corresponding to the maintenance lid 141 in the partition plate 142 may be cut out, and an electrical component box (not shown) may be arranged in the cut portion.

このように、下部ダクト１４０の２分割された空気流通路１４０Ａ，１４０Ｂの内壁全面に吸音材１４３を貼付することにより、下部ダクト１４０を２分割せずにその内壁全面に吸音材を貼付した場合と比べて、その吸音材の貼付面積が大幅に増大する。   In this way, when the sound absorbing material 143 is applied to the entire inner wall of the two divided air flow passages 140A and 140B of the lower duct 140, the sound absorbing material is applied to the entire inner wall without dividing the lower duct 140 into two. As compared with the above, the area of the sound absorbing material is greatly increased.

たとえば、下部ダクト１４０が横断面正方形の場合では、仕切板１４２の両面に貼付する吸音材１４３の面積が、横断面正方形の下部ダクト１４０の内壁に貼付する吸音材の面積の５０％に相当するので、仕切板１４２を設けない場合に比べて吸音材１４３の貼付面積が１５０％に増大する。下部ダクト１４０を図２、図３に示すように横長断面に形成しその長手方向に仕切板１４２を設けた場合は、吸音材の貼付面積は仕切板１４２がない場合に対して２００％近くにまでも増大させることができる。   For example, when the lower duct 140 has a square cross section, the area of the sound absorbing material 143 attached to both surfaces of the partition plate 142 corresponds to 50% of the area of the sound absorbing material attached to the inner wall of the lower duct 140 having a square cross section. Therefore, the sticking area of the sound absorbing material 143 increases to 150% as compared with the case where the partition plate 142 is not provided. When the lower duct 140 is formed in a laterally long cross section as shown in FIGS. 2 and 3 and a partition plate 142 is provided in the longitudinal direction, the sound absorbing material sticking area is close to 200% compared to the case where the partition plate 142 is not provided. Can be increased.

したがって、下部ダクト１４０の上下方向の長さが短い場合であっても、その内壁への吸音材１４３の貼付面積を飛躍的に増大させることができるので、その吸音効果が増大し、室内機１１０の送風ファンで発生する騒音を効果的に抑制することができる。また、下部ダクト１４０の長さを短かくすることができることから、室内機１１０を十分下方に配置することができるので、その室内機１１０のメンテナンス性を高めることが可能となる。また、下部ダクト１４０の長さを短くすることができるので、その分だけ上部ダクト１２０の上下方向の長さを長くできることから、吸音材を内壁に貼付した上部ダクト１２０における騒音抑制効果も大きくなる。   Therefore, even if the length of the lower duct 140 in the vertical direction is short, the area of the sound absorbing material 143 attached to the inner wall can be dramatically increased, so that the sound absorbing effect is increased and the indoor unit 110 is increased. The noise generated by the blower fan can be effectively suppressed. Moreover, since the length of the lower duct 140 can be shortened, the indoor unit 110 can be disposed sufficiently downward, so that the maintainability of the indoor unit 110 can be improved. Moreover, since the length of the lower duct 140 can be shortened, and the length of the upper duct 120 in the vertical direction can be increased accordingly, the noise suppressing effect in the upper duct 120 with the sound absorbing material attached to the inner wall is also increased. .

なお、以上の実施例では、上部グリル１３０を吹出用として、下部グリル１５０を吸込用としてそれぞれ配置した例について説明したが、室内機１１０の吹出開口１１１と吸込開口１１２を上下逆に設けた場合は、上部グリル１３０は吸込用となり、下部グリル１５０は吹出用となる。この場合でも、下部ダクト１４０は同様に短くなるので、その下部ダクト１４０について、同様に仕切板１４２を設けて吸音材１４３を貼付すれば、同様な騒音抑制効果を得ることができる。   In the above embodiment, the example in which the upper grill 130 is used for blowing and the lower grill 150 is used for suction has been described. However, when the blowing opening 111 and the suction opening 112 of the indoor unit 110 are provided upside down. The upper grill 130 is for suction, and the lower grill 150 is for blowing. Even in this case, since the lower duct 140 is similarly shortened, the same noise suppression effect can be obtained if the partition plate 142 is similarly provided and the sound absorbing material 143 is attached to the lower duct 140.

また、仕切板１４２によって下部ダクト１４０の内部に形成する空気流通路は、２個に限られることはなく、３個以上であってもよく、その数が多いほど吸音材１４３の貼付面積が大きくなるので、吸音効果が増大する。   Further, the number of air flow passages formed in the lower duct 140 by the partition plate 142 is not limited to two, and may be three or more. The larger the number, the larger the area where the sound absorbing material 143 is attached. Therefore, the sound absorption effect is increased.

１００：ダクト型空気調和機、１１０：室内機、１１１：吹出開口、１１２：吸込開口、１２０：上部ダクト、１３０：上部グリル、１４０：下部ダクト、１４１：メンテナンス蓋、１４２：仕切板、１４３：吸音材、１４４：長辺、１４５：短辺、１５０：アダプタ、１６０：下部グリル
２００：天井
３００：床面
４００：壁、４１０：：メンテナンス扉 100: Duct type air conditioner, 110: Indoor unit, 111: Blowing opening, 112: Suction opening, 120: Upper duct, 130: Upper grill, 140: Lower duct, 141: Maintenance lid, 142: Partition plate, 143: Sound absorbing material, 144: long side, 145: short side, 150: adapter, 160: lower grille 200: ceiling 300: floor surface 400: wall, 410 :: maintenance door

Claims (4)

熱交換器と送風ファンが配置され、上部と下部のいずれか一方に吹出開口が設けられ、前記上部と下部のいずれか他方に吸込開口が設けられ、壁の背面側に配置される室内機と、該室内機の前記吹出開口と前記吸込開口のいずれか一方と前記壁に設けられた上部グリルとの間を前記壁の背面側において接続する上部ダクトと、前記室内機の前記吹出開口と前記吸込開口のいずれか他方と前記壁に設けられた下部グリルとの間を前記壁の背面側において接続する下部ダクトとを備え、前記上部ダクトおよび前記下部ダクトの内壁にそれぞれ吸音材が貼付されたダクト型空気調和機において、
前記下部ダクトは、上下方向の空気流通路が複数になるように内部が複数個に分割され、該複数個に分割されたそれぞれの前記空気流通路の内壁に前記吸音材が貼付されていることを特徴とするダクト型空気調和機。 An indoor unit in which a heat exchanger and a blower fan are arranged, a blow-off opening is provided in one of the upper part and the lower part, a suction opening is provided in either the upper part or the lower part, and is arranged on the back side of the wall An upper duct that connects between one of the blowout opening and the suction opening of the indoor unit and an upper grill provided on the wall on the back side of the wall; the blowout opening of the indoor unit; A lower duct connecting the other side of the suction opening and the lower grill provided on the wall on the back side of the wall, and a sound absorbing material is respectively attached to the inner walls of the upper duct and the lower duct In duct type air conditioner,
The lower duct is divided into a plurality of parts so that there are a plurality of vertical air flow passages, and the sound absorbing material is attached to the inner wall of each of the divided air flow passages. A duct type air conditioner characterized by 請求項１に記載のダクト型空気調和機において、
前記下部ダクトは、上下方向の長さが前記上部ダクトよりも短く設定されていることを特徴とするダクト型空気調和機。 In the duct type air conditioner according to claim 1,
The lower air duct has a vertical length set shorter than that of the upper air duct. 請求項１又は２に記載のダクト型空気調和機において、
前記下部ダクトの横断面は長辺と短辺を有する直方体形状であり、前記複数の空気流通路は、前記短辺の方向に複数個に分割されることで形成されていることを特徴とするダクト型空気調和機。 In the duct type air conditioner according to claim 1 or 2,
A cross section of the lower duct has a rectangular parallelepiped shape having a long side and a short side, and the plurality of air flow passages are formed by being divided into a plurality in the direction of the short side. Duct type air conditioner. 請求項１、２又は３に記載のダクト型空気調和機において、
前記吸音材は、グラスウールからなることを特徴とするダクト型空気調和機。 In the duct type air conditioner according to claim 1, 2, or 3,
The duct type air conditioner, wherein the sound absorbing material is made of glass wool.
JP2014065106A 2014-03-27 2014-03-27 Duct type air conditioner Active JP6195114B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4037396A1 (en) 2015-09-24 2022-08-03 Ntt Docomo, Inc. User apparatus, and transmission method

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Publication number Priority date Publication date Assignee Title
JPS4969301U (en) * 1972-09-30 1974-06-17
JPS5130701B1 (en) * 1973-07-26 1976-09-02
JPH07233966A (en) * 1994-02-24 1995-09-05 Sanyo Electric Co Ltd Air conditioner
JP2004257597A (en) * 2003-02-24 2004-09-16 Howa Kasei Kk Bent duct and method of manufacturing bent duct
JP2010071475A (en) * 2008-09-16 2010-04-02 Panasonic Corp Ceiling embedded ventilation fan

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4969301U (en) * 1972-09-30 1974-06-17
JPS5130701B1 (en) * 1973-07-26 1976-09-02
JPH07233966A (en) * 1994-02-24 1995-09-05 Sanyo Electric Co Ltd Air conditioner
JP2004257597A (en) * 2003-02-24 2004-09-16 Howa Kasei Kk Bent duct and method of manufacturing bent duct
JP2010071475A (en) * 2008-09-16 2010-04-02 Panasonic Corp Ceiling embedded ventilation fan

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4037396A1 (en) 2015-09-24 2022-08-03 Ntt Docomo, Inc. User apparatus, and transmission method

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