JP5334644B2

JP5334644B2 - Compact air conditioner

Info

Publication number: JP5334644B2
Application number: JP2009083836A
Authority: JP
Inventors: 未来高口; 英暢二宮
Original assignee: Kubota Corp; Kubota Air Conditioner Ltd
Current assignee: Kubota Corp; Kubota Air Conditioner Ltd
Priority date: 2009-03-31
Filing date: 2009-03-31
Publication date: 2013-11-06
Anticipated expiration: 2029-03-31
Also published as: JP2010236735A

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact type air conditioner reducing noise itself, reducing abnormal noise due to standing waves, and capable of improving blower performance. <P>SOLUTION: A blower 401 is equipped in an air supply ventilation passage of a casing 100, the blower 401 has a discharge ports 404 around a blade rotating shaft, and a non-vertical inclined plane is comprised with respect to a face of a closure plate 403 orthogonal to the blade rotating shaft comprising a wall surface facing the discharge ports 404 of the blower. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明はコンパクト型空気調和機に関し、ケーシング内での異常騒音を低減する技術に係るものである。 The present invention relates to a compact air conditioner and relates to a technique for reducing abnormal noise in a casing.

従来の空気調和機としては、例えば図６および図７に示すものがある。これはケーシング１の内部に、還気セクション２、コイルセクション３、給気セクション４を設けている。還気セクション２では、還気口２１から還流する空気を例えば中性能フィルタ等のフィルタ２２で濾過する。コイルセクション３では、還気セクション２からフィルタ２２を通して吸込んだ空気の温度、湿度を冷水コイル３１、温水コイル３２および気化式加湿器３３により調える。給気セクション４では、コイルセクション３から流入する空気を例えばプラグファン等の送風機４１により給気口４２から給気する。 Examples of conventional air conditioners include those shown in FIGS. 6 and 7. In the casing 1, a return air section 2, a coil section 3 and an air supply section 4 are provided. In the return air section 2, the air returning from the return air port 21 is filtered by a filter 22 such as a medium performance filter. In the coil section 3, the temperature and humidity of the air sucked from the return air section 2 through the filter 22 are adjusted by the cold water coil 31, the hot water coil 32 and the vaporizing humidifier 33. In the air supply section 4, the air flowing in from the coil section 3 is supplied from the air supply port 42 by a blower 41 such as a plug fan.

先行技術としては特許文献１に記載する空気調和機がある。これは、ケーシングの給気通風路にファン装置を備えるものであり、ファン装置のベースプレートそれ自体が給気通風路を仕切る隔壁をなしている。ベースプレートは緩衝手段を介して取付架台に支持されており、ベースプレートの外周縁に設けたシール手段が給気通風路の壁面との間を気密に封止し、かつ壁面に摺接して防振機能を発揮する。 As a prior art, there is an air conditioner described in Patent Document 1. This is provided with a fan device in the air supply passage of the casing, and the base plate itself of the fan device forms a partition that partitions the air supply passage. The base plate is supported by the mounting base via the buffering means, and the sealing means provided on the outer peripheral edge of the base plate hermetically seals between the wall surface of the supply air passage and slides against the wall surface to prevent vibration. Demonstrate.

また、特許文献２に記載する送風装置では、送風ユニットケースが互いに対向する前後一対の短辺側壁面と左右一対の長辺側壁面を有しており、内部にチャンバを有するとともに、上部に吐出口を備えている。送風ユニットケースの内部にハウジングレスのターボファンを収容しており、このターボファンは空気取入口から吸込んだ空気を送風ユニットケースの内部に吐出するようになっている。送風ユニットケースの短辺側壁面の上下方向中間部と、吐出口の開口縁部との間に風案内板が配置されている。風案内板と壁面のなす角度は１５°〜３５°の範囲にある。 Further, in the blower described in Patent Document 2, the blower unit case has a pair of front and rear short side wall surfaces and a pair of left and right long side wall surfaces facing each other, has a chamber inside, and discharges to the top. Has an exit. A housingless turbofan is accommodated inside the blower unit case, and the turbofan discharges air sucked from the air intake port into the blower unit case. A wind guide plate is disposed between the vertical middle portion of the short side wall surface of the blower unit case and the opening edge of the discharge port. The angle formed by the wind guide plate and the wall surface is in the range of 15 ° to 35 °.

特開２００７−２７１１４１号公報JP 2007-271141 A 特開平６−２８１１９４号公報JP-A-6-281194

ところで、図８および図９に示すものでは、ケーシング１の給気セクション４において鉛直軸廻りで送風機４１の周囲を囲む４つの壁面４ａ、４ｂ、４ｃ、４ｄは垂直面をなし、相対向する壁面４ａと壁面４ｂまたは壁面４ｃと壁面４ｄが平行壁をなしている。 8 and 9, the four wall surfaces 4a, 4b, 4c, and 4d surrounding the blower 41 around the vertical axis in the air supply section 4 of the casing 1 form a vertical surface and are opposed to each other. 4a and the wall surface 4b or the wall surface 4c and the wall surface 4d are parallel walls.

このため、給気セクション４の平行壁間に発生する定在波は、平行壁の壁間距離、つまり相対向する壁面４ａと壁面４ｂまたは壁面４ｃと壁面４ｄの壁間距離と、送風機４１のファン羽根周波数から求められる送風機４１で発生する騒音の波長が一致したときに大きな騒音が生じ易くなる。 For this reason, the standing wave generated between the parallel walls of the air supply section 4 is the distance between the parallel walls, that is, the distance between the opposing wall surfaces 4a and 4b or the wall surfaces 4c and 4d, Large noise is likely to occur when the wavelengths of noise generated by the blower 41 determined from the fan blade frequency coincide.

また、送風機４１が周囲の壁面４ａ、４ｂ、の距離が小さい場合に、送風抵抗が大４ｃ、４ｄに向けて空気を吐出する構造にあって、送風機４１と壁面４ａ、４ｂ、４ｃ、４ｄときくなって送風機性能が低下し、騒音レベルが増大する。 In addition, when the distance between the blower 41 and the surrounding wall surfaces 4a and 4b is small, the blower resistance is configured to discharge air toward the large walls 4c and 4d, and the blower 41 and the wall surfaces 4a, 4b, 4c, and 4d As a result, the fan performance decreases and the noise level increases.

本発明は上記した課題を解決するものであり、騒音自体を低減するとともに、定在波による異常騒音を低減し、かつ送風機性能を向上させることができるコンパクト型空気調和機を提供することを目的とする。 The present invention solves the above-described problems, and an object thereof is to provide a compact air conditioner that can reduce noise itself, reduce abnormal noise due to standing waves, and improve blower performance. And

上記課題を解決するために、本発明のコンパクト型空気調和機は、ケーシングの給気通風路に送風機が備えられ、給気通風路の送風機を囲む壁面のうちで少なくとも１つの壁面は、その壁面全体が通風方向と直交する面に対して非垂直な面をなすことを特徴とする。 In order to solve the above problems, the compact air conditioner of the present invention is provided with a blower in the air supply passage of the casing, and at least one of the wall surfaces surrounding the blower of the supply air passage is the wall surface. whole is characterized by forming a non-perpendicular plane to the plane perpendicular to the direction of airflow.

また、本発明のコンパクト型空気調和機において、羽根回転軸廻りに吐出口を有した送風機が羽根回転軸を通風方向と平行となるように備えられ、給気通風路の壁面のうちで送風機の吐出口に対向し、かつ給気通風路とケーシング内の他の領域とを隔てる閉鎖板からなる壁面が羽根回転軸と直交する面に対して非垂直な傾斜面を有し、少なくとも送風機の吐出口に対向する部分がケーシング内の他の領域へ張り出すことを特徴とする。 In the compact air conditioner of the present invention, a blower having a discharge port around the blade rotation axis is provided so as to be parallel to the ventilation direction of the blade rotation shaft. The wall surface of the closing plate that faces the discharge port and separates the air supply passage from the other area in the casing has an inclined surface that is non-perpendicular to the surface orthogonal to the blade rotation axis, and at least the discharge of the blower A portion facing the outlet projects to another area in the casing.

また、本発明のコンパクト型空気調和機は、ケーシングの給気通風路に送風機が備えられ、給気通風路の壁面のうちで少なくとも１つの壁面が通風方向と直交する面に対して非垂直な面を有し、羽根回転軸廻りに吐出口を有した送風機が羽根回転軸を通風方向と平行となるように備えられ、給気通風路の壁面のうちで送風機の吐出口に対向し、かつ給気通風路とケーシング内の他の領域とを隔てる閉鎖板からなる壁面が羽根回転軸と直交する面に対して非垂直な傾斜面を有し、少なくとも送風機の吐出口に対向する部分がケーシング内の他の領域へ張り出し、前記閉鎖板が下方から上方へ行くほどにケーシング内の他の領域へ張り出すように形成され、ケーシング内の他の領域から給気通風路へ空気を導くガイドをなすことを特徴とする。 In the compact air conditioner of the present invention , a blower is provided in the supply air passage of the casing, and at least one wall surface of the supply air passage is non-perpendicular to a surface perpendicular to the ventilation direction. A blower having a surface and having a discharge port around the blade rotation axis is provided so as to be parallel to the ventilation direction of the blade rotation shaft, facing the discharge port of the blower in the wall surface of the supply air passage, and The wall surface of the closing plate that separates the air supply ventilation path from the other region in the casing has an inclined surface that is non-perpendicular to the surface orthogonal to the blade rotation axis, and at least the portion facing the discharge port of the blower is the casing A guide that guides air from the other region in the casing to the air supply passage, and is formed so as to project to the other region in the casing as the closing plate goes from the lower side to the upper side. It is characterized by doing.

また、本発明のコンパクト型空気調和機は、ケーシングの給気通風路に送風機が備えられ、給気通風路の壁面のうちで少なくとも１つの壁面が通風方向と直交する面に対して非垂直な面を有し、羽根回転軸廻りに吐出口を有した送風機が羽根回転軸を通風方向と平行となるように備えられ、給気通風路の壁面のうちで送風機の吐出口に対向し、かつ給気通風路とケーシング内の他の領域とを隔てる閉鎖板からなる壁面が羽根回転軸と直交する面に対して非垂直な傾斜面を有し、少なくとも送風機の吐出口に対向する部分がケーシング内の他の領域へ張り出し、給気通風路が熱交換器を備えたケーシング内の他の領域と前記閉鎖板を介して隣接することを特徴とする。
また、本発明のコンパクト型空気調和機は、ケーシングの給気通風路に送風機が備えられ、給気通風路の壁面のうちで少なくとも１つの壁面が通風方向と直交する面に対して非垂直な面を有し、送風機の羽根回転軸廻りで吐出口に対向するケーシングの扉の内側面に羽根回転軸と直交する面に対して非垂直な傾斜面を有することを特徴とする。 In the compact air conditioner of the present invention , a blower is provided in the supply air passage of the casing, and at least one wall surface of the supply air passage is non-perpendicular to a surface perpendicular to the ventilation direction. A blower having a surface and having a discharge port around the blade rotation axis is provided so as to be parallel to the ventilation direction of the blade rotation shaft, facing the discharge port of the blower in the wall surface of the supply air passage, and The wall surface of the closing plate that separates the air supply ventilation path from the other region in the casing has an inclined surface that is non-perpendicular to the surface orthogonal to the blade rotation axis, and at least the portion facing the discharge port of the blower is the casing It protrudes to the other area | region inside, and an air supply ventilation path adjoins the other area | region in the casing provided with the heat exchanger through the said closing plate, It is characterized by the above-mentioned.
In the compact air conditioner of the present invention , a blower is provided in the supply air passage of the casing, and at least one wall surface of the supply air passage is non-perpendicular to a surface perpendicular to the ventilation direction. And having an inclined surface that is non-perpendicular to the surface orthogonal to the blade rotation axis on the inner surface of the casing door facing the discharge port around the blade rotation axis of the blower.

以上のように本発明によれば、給気通風路の壁面のうちで少なくとも１つの壁面が通風方向と直交する面に対して非垂直な傾斜面を有し、または送風機の羽根回転軸廻りで吐出口に対向する壁面のうちで少なくとも１つの壁面が羽根回転軸と直交する面に対して非垂直な傾斜面を有することで、この非垂直な傾斜面への入射波と傾斜面からの反射波とによる定在波は発生しないので、定在波による異常騒音を低減することができる。 As described above, according to the present invention, at least one of the wall surfaces of the supply air passage has an inclined surface that is non-perpendicular to the surface orthogonal to the ventilation direction, or around the blade rotation axis of the blower. Since at least one of the wall surfaces facing the discharge port has a non-perpendicular inclined surface with respect to the surface orthogonal to the blade rotation axis, incident waves on the non-perpendicular inclined surface and reflection from the inclined surface Since standing waves due to waves do not occur, abnormal noise due to standing waves can be reduced.

また、給気通風路とケーシング内の他の領域とを隔てる閉鎖板からなる壁面が少なくとも送風機の吐出口に対向する部分において羽根回転軸と直交する面に対して非垂直な傾斜面を有してケーシング内の他の領域側へ張り出すことにより、ケーシングの外形寸法を大きくすることなく、給気通風路の容積を増加させることができるとともに、送風機の羽根回転軸廻りで吐出口に対向する壁面のうちで少なくとも１つの壁面と送風機の吐出口との距離を大きくすることができるので、騒音自体を低減するとともに、送風機性能を向上させることができる。 In addition, the wall surface of the closing plate that separates the air supply ventilation path from the other area in the casing has an inclined surface that is non-perpendicular to the surface orthogonal to the blade rotation axis in at least a portion facing the discharge port of the blower. By projecting to the other region side in the casing, the volume of the air supply ventilation path can be increased without increasing the outer dimension of the casing, and the discharge port is opposed to the blade rotation axis of the blower. Since the distance between at least one of the wall surfaces and the outlet of the blower can be increased, noise itself can be reduced and the blower performance can be improved.

閉鎖板が非垂直な傾斜面をなして下方から上方へ行くほどにケーシング内の他の領域側へ張り出すことで、閉鎖板はケーシング内の他の領域から給気通風路へ空気を導くガイドをなし、送風機への空気の吸込が円滑となる。 A guide that guides air from the other area in the casing to the air supply passage by projecting to the other area side in the casing as the closing board forms a non-vertical inclined surface and goes upward from below. The air can be smoothly sucked into the blower.

また、本発明のコンパクト型空気調和機において、給気通風路が熱交換器を備えたケーシング内の他の領域と閉鎖板を介して隣接し、閉鎖板が熱交換器を備えたケーシング内の他の領域側へ張り出すことで、熱交換器を備えたケーシング内の他の領域におけるデッドスペースを利用して給気通風路を拡張することができ、騒音自体を低減するとともに、定在波による異常騒音を低減し、かつ送風機性能を向上させることができる。 In the compact air conditioner of the present invention, the air supply passage is adjacent to another region in the casing provided with the heat exchanger via the closing plate, and the closing plate is provided in the casing provided with the heat exchanger. By projecting to the other area side, the dead air space in the other area in the casing with the heat exchanger can be used to expand the air supply ventilation path, reducing noise itself and standing wave It is possible to reduce the abnormal noise caused by the fan and to improve the blower performance.

また、ケーシングの扉の内側面に羽根回転軸と直交する面に対して非垂直な傾斜面を形成することで定在波による異常騒音を低減できる。 Moreover, abnormal noise due to standing waves can be reduced by forming an inclined surface that is not perpendicular to the surface orthogonal to the blade rotation axis on the inner surface of the casing door.

本発明の実施の形態における空気調和機を示す正面図The front view which shows the air conditioner in embodiment of this invention 同空気調和機の要部を示す図The figure which shows the principal part of the air conditioner 同空気調和機を示す平面図Plan view showing the air conditioner 同空気調和機の要部を示す斜視図The perspective view which shows the principal part of the air conditioner 同空気調和機の要部を示す斜視図The perspective view which shows the principal part of the air conditioner 本発明の他の実施の形態における空気調和機を示す正面図The front view which shows the air conditioner in other embodiment of this invention. 同空気調和機の要部を示す模式図Schematic showing the main parts of the air conditioner 従来の空気調和機を示す平面図Plan view showing a conventional air conditioner 同空気調和機を示す正面図Front view showing the air conditioner

以下、本発明の実施の形態を図面に基づいて説明する。図１から図５において、空気調和機はケーシング１００の外壁が固定したパネル体からなり、正面側のパネル体が後述する各セクションの開閉扉をなす。ケーシング１００の内部には、還気セクション２００、コイルセクション３００、給気セクション４００を設けている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 5, the air conditioner includes a panel body to which the outer wall of the casing 100 is fixed, and the panel body on the front side forms an opening / closing door of each section described later. Inside the casing 100, a return air section 200, a coil section 300, and an air supply section 400 are provided.

還気セクション２００は還気通風路を形成しており、天面に還気口２０１を有し、コイルセクション３００との間に中性能フィルタ等のフィルタ２０２を備えている。フィルタ２０２はケーシング１００の底面側に立設しており、還気セクション２００は正面側に開閉扉２０３を有している。 The return air section 200 forms a return air ventilation path, has a return air port 201 on the top surface, and includes a filter 202 such as a medium performance filter between the coil section 300. The filter 202 is erected on the bottom surface side of the casing 100, and the return air section 200 has an opening / closing door 203 on the front side.

コイルセクション３００は調整通風路を形成しており、内部に冷水コイル３０１、温水コイル３０２および気化式加湿器３０３を備えている。冷水コイル３０１、温水コイル３０２および気化式加湿器３０３はケーシング１００の底面側に立設している。冷水コイル３０１は還気セクション２００のフィルタ２０２に隣接して配置し、冷水コイル３０１の下流側に温水コイル３０２および気化式加湿器３０３を順次に配置している。コイルセクション３００は正面側に開閉扉３０４を有している。 The coil section 300 forms an adjusted ventilation path, and includes a cold water coil 301, a hot water coil 302, and a vaporizing humidifier 303 therein. The cold water coil 301, the hot water coil 302 and the vaporizing humidifier 303 are erected on the bottom side of the casing 100. The cold water coil 301 is disposed adjacent to the filter 202 of the return air section 200, and the hot water coil 302 and the vaporizing humidifier 303 are sequentially disposed on the downstream side of the cold water coil 301. The coil section 300 has an open / close door 304 on the front side.

給気セクション４００は給気通風路を形成しており、ここでは内部にプラグファンの送風機４０１を備え、天面に給気口４０２を有している。給気セクション４００は送風機４０１を境として下部領域側がコイルセクション３００に連通し、送風機４０１を境とする上部領域側の給気通風路が閉鎖板４０３を介してコイルセクション３００の調整通風路と隣接している。給気通風路の壁面のうちで少なくとも１つの壁面、ここでは閉鎖板４０３が給気通風路における流路軸心方向に沿った通風方向と直交する面に対して非垂直な面を有している。 The air supply section 400 forms an air supply ventilation path. Here, the air supply section 400 includes a blower 401 of a plug fan inside, and has an air supply port 402 on the top surface. The air supply section 400 communicates with the coil section 300 on the lower region side with the blower 401 as a boundary, and the air supply passage on the upper region side with the blower 401 as a boundary is adjacent to the adjustment air passage of the coil section 300 through the closing plate 403. doing. At least one of the wall surfaces of the supply air passage, here, the closing plate 403 has a surface that is non-perpendicular to a surface perpendicular to the air flow direction along the axial direction of the flow passage in the supply air passage. Yes.

送風機４０１はハウジングのないプラグファンを用いており、羽根回転軸廻りに吐出口４０４を有している。送風機４０１は羽根回転軸を通風方向と平行となるように備えられ、給気セクション４００において送風機４０１の吐出口４０４に対向する給気通風路の壁面のうちで少なくとも１つの壁面が羽根回転軸と直交する面に対して非垂直な傾斜面をなしており、本実施の形態では閉鎖板４０３が羽根回転軸と直交する面に対して非垂直な傾斜面を有している。 The blower 401 uses a plug fan without a housing, and has a discharge port 404 around the blade rotation axis. The blower 401 is provided so as to be parallel to the ventilation direction of the blade rotation axis, and at least one wall surface of the air supply section 400 facing the discharge port 404 of the blower 401 in the supply section 400 is a blade rotation axis. In this embodiment, the closing plate 403 has a non-perpendicular inclined surface with respect to a plane orthogonal to the blade rotation axis.

すなわち、閉鎖板４０３を介して給気セクション４００の上部領域がコイルセクション３００の上部領域と隣接し、閉鎖板４０３が下方から上方へ行くほどにコイルセクション３００の上部領域側へ張り出しており、少なくとも送風機４０１の吐出口４０４に対向する部分がケーシング内の他の領域へ張り出している。 That is, the upper region of the air supply section 400 is adjacent to the upper region of the coil section 300 through the closing plate 403, and protrudes toward the upper region side of the coil section 300 as the closing plate 403 goes upward from below. A portion of the blower 401 that faces the discharge port 404 protrudes to another area in the casing.

このように閉鎖板４０３が下方から上方へ行くほどにコイルセクション３００の領域側へ張り出すことで、閉鎖板４０３がコイルセクション３００の調整通風路から給気セクション４００の給気通風路へ空気を導くガイドをなす。閉鎖板４０３の内面にはグラスウール等の吸音材４０５を設けている。 In this way, the closing plate 403 protrudes from the lower side to the upper side of the coil section 300 so that the closing plate 403 draws air from the adjustment ventilation path of the coil section 300 to the supply ventilation path of the supply section 400. Make a guide to guide. A sound absorbing material 405 such as glass wool is provided on the inner surface of the closing plate 403.

また、給気セクション４００は正面側に開閉扉４０６を有し、開閉扉４０６は送風機４０１の羽根回転軸廻りで吐出口４０４に対向しており、この開閉扉４０６の内面側に羽根回転軸と直交する面に対して非垂直な傾斜面を形成することも可能である。この傾斜面は開閉扉４０６とは別途の部材で形成することも可能であるし、開閉扉４０６それ自体に形成することも可能である。 The air supply section 400 has an opening / closing door 406 on the front side, and the opening / closing door 406 faces the discharge port 404 around the blade rotation axis of the blower 401. It is also possible to form an inclined surface that is non-perpendicular to the orthogonal surface. The inclined surface can be formed by a member separate from the opening / closing door 406 or can be formed on the opening / closing door 406 itself.

上記した構成において、空気調和機は送風機４０１の運転による送風により給気し、吸引により還気を行なう。運転時に負圧となる還気セクション２００では、還気口２０１か吸込む空気が還流し、この空気をフィルタ２０２で濾過する。運転時に負圧となるコイルセクション３００では、還気セクション２００からフィルタ２０２を通して吸込んだ空気の温度、湿度を冷水コイル３０１、温水コイル３０２および気化式加湿器３０３により調える。運転時に正圧となる給気セクション４００では、コイルセクション３００から流入する空気を送風機４０１により給気口４０２から給気する。 In the configuration described above, the air conditioner supplies air by blowing air from the operation of the blower 401 and returns air by suction. In the return air section 200, which has a negative pressure during operation, air sucked from the return air port 201 circulates and is filtered by the filter 202. In the coil section 300 that becomes negative pressure during operation, the temperature and humidity of the air sucked from the return air section 200 through the filter 202 are adjusted by the cold water coil 301, the hot water coil 302, and the vaporizing humidifier 303. In the air supply section 400 that has a positive pressure during operation, the air flowing from the coil section 300 is supplied from the air supply port 402 by the blower 401.

給気セクション４００では、送風機４０１の羽根回転軸廻りで吐出口４０４に対向する壁面のうちで少なくとも１つの壁面、ここでは閉鎖板４０３が羽根回転軸と直交する面に対して非垂直な傾斜面をなすことで、この非垂直な傾斜面への入射波と傾斜面からの反射波とによる定在波は発生しないので、定在波による異常騒音を低減することができる。 In the air supply section 400, at least one of the wall surfaces facing the discharge port 404 around the blade rotation axis of the blower 401, here, the closing plate 403 is a non-perpendicular inclined surface with respect to the plane orthogonal to the blade rotation axis By doing so, no standing wave is generated by the incident wave on the non-perpendicular inclined surface and the reflected wave from the inclined surface, so that abnormal noise due to the standing wave can be reduced.

また、給気セクション４００の給気通風路とケーシング１００の内部の他の領域、ここではコイルセクション３００とを隔てる閉鎖板４０３からなる壁面が羽根回転軸と直交する面に対して非垂直な傾斜面をなしてコイルセクション３００の領域側へ張り出すことにより、コイルセクション３００におけるデッドスペース、つまり冷水コイル３０１、温水コイル３０２、気化式加湿器３０３等の機器の上方領域を利用して給気通風路を拡張することができ、ケーシング１００の外形寸法を大きくすることなく、給気セクション４００の給気通風路の容積を増加させることができるとともに、送風機４０１の羽根回転軸廻りで吐出口４０４に対向する壁面のうちで少なくとも１つの壁面、ここでは閉鎖板４０３と送風機４０１の吐出口４０４との距離を大きくすることができるので、騒音自体を低減するとともに、送風機性能を向上させることができ、定在波による異常騒音を低減できる。また、送風機４０１の周りの空間容積を損なうことなく、吸音材４０５を配置することができる。 In addition, the wall surface of the closing plate 403 that separates the air supply passage of the air supply section 400 from the other area inside the casing 100, here the coil section 300, is non-perpendicular to the plane perpendicular to the blade rotation axis. By projecting to the area side of the coil section 300 by forming a plane, air supply ventilation is performed using the dead space in the coil section 300, that is, the upper area of the equipment such as the cold water coil 301, the hot water coil 302, and the vaporizing humidifier 303. The volume of the air supply ventilation path of the air supply section 400 can be increased without enlarging the outer dimensions of the casing 100, and the discharge port 404 around the blade rotation axis of the blower 401 can be expanded. At least one of the opposing walls, here a closing plate 403 and a discharge port 404 of the blower 401 The distance can be increased, while reducing the noise itself, blower performance can be improved, thereby reducing the abnormal noise due to the standing wave. Further, the sound absorbing material 405 can be arranged without impairing the space volume around the blower 401.

閉鎖板４０３が非垂直な傾斜面をなして下方から上方へ行くほどにコイルセクション３００の領域側へ張り出すことで、閉鎖板４０３はコイルセクション３００の領域から給気通風路へ空気を導くガイドをなし、送風機への空気の吸込が円滑となる。 As the closing plate 403 forms a non-vertical inclined surface and projects upward from the lower side to the upper side of the coil section 300, the closing plate 403 guides air from the coil section 300 region to the air supply passage. The air can be smoothly sucked into the blower.

開閉扉４０６の内面側に羽根回転軸と直交する面に対して非垂直な傾斜面を設けることでも、定在波による異常騒音を低減できる。
尚、上記各実施の形態では、閉鎖板４０３は下方から上方へ行くほどにケーシング内の他の領域側へ張り出していたが、図６に示すように、閉鎖板の中間部分から給気口４０２側へ向かうようにクの字状に折り曲げた形状であってもよい。この場合、閉鎖板の下方側はケーシング内の他の領域から給気通風路へ空気を導くガイドをなし、閉鎖板の上方側が給気通風路内の空気を給気口へ導くガイドとなるので、空気の流れが円滑となり、騒音を低減することができる。 Abnormal noise due to standing waves can also be reduced by providing an inclined surface that is not perpendicular to the surface orthogonal to the blade rotation axis on the inner surface side of the opening / closing door 406.
In each of the above embodiments, the closing plate 403 protrudes from the lower side to the other side of the casing as it goes from the lower side to the upper side. However, as shown in FIG. The shape bent in the shape of a square so that it may go to the side may be sufficient. In this case, the lower side of the closing plate serves as a guide for guiding air from other areas in the casing to the air supply passage, and the upper side of the closing plate serves as a guide for guiding the air in the supply air passage to the air supply port. The air flow becomes smooth and noise can be reduced.

また、図７に示すように、閉鎖板４０３は傾斜面が連続する山形の形状でもよい。この場合、先端部は僅かに垂直面を有していてもよい。 Further, as shown in FIG. 7, the closing plate 403 may have a mountain shape with continuous inclined surfaces. In this case, the tip may have a slightly vertical surface.

１００ケーシング
２００還気セクション
２０１還気口
２０２フィルタ
２０３開閉扉
３００コイルセクション
３０１冷水コイル
３０２温水コイル
３０３気化式加湿器
３０４開閉扉
４００給気セクション
４０１送風機
４０２給気口
４０３閉鎖板
４０４吐出口
４０５吸音材
４０６開閉扉 DESCRIPTION OF SYMBOLS 100 Casing 200 Return air section 201 Return air port 202 Filter 203 Opening and closing door 300 Coil section 301 Cold water coil 302 Hot water coil 303 Vaporizing humidifier 304 Opening and closing door 400 Air supply section 401 Blower 402 Air supply port 403 Closing plate 404 Discharge port 405 Sound absorption Material 406 door

Claims

Blower provided in the intake air passage of the casing, at least one wall surface among the wall surfaces surrounding the blower of the air supply air passage is to form a non-perpendicular plane to the plane of the entire wall surface is orthogonal to the direction of airflow A compact air conditioner characterized by

A blower having a discharge port around the blade rotation axis is provided so as to be parallel to the ventilation direction of the blade rotation shaft, facing the discharge port of the blower on the wall surface of the supply air passage, and the supply air passage The wall surface of the closing plate that separates the other area in the casing has an inclined surface that is non-perpendicular to the plane orthogonal to the blade rotation axis, and at least the portion facing the discharge port of the blower is the other area in the casing. The compact air conditioner according to claim 1, wherein the compact air conditioner projects to the outside.

A blower is provided in the supply air passage of the casing, and at least one wall surface of the wall surfaces of the supply air passage has a surface that is non-perpendicular to a surface orthogonal to the air flow direction,
A blower having a discharge port around the blade rotation axis is provided so as to be parallel to the ventilation direction of the blade rotation shaft, facing the discharge port of the blower on the wall surface of the supply air passage, and the supply air passage The wall surface of the closing plate that separates the other area in the casing has an inclined surface that is non-perpendicular to the plane orthogonal to the blade rotation axis, and at least the portion facing the discharge port of the blower is the other area in the casing. Overhang,
A compact type characterized in that the closing plate is formed so as to project to the other area in the casing as it goes from the lower side to the upper side, and serves as a guide for guiding air from the other area in the casing to the air supply passage. Air conditioner.

A blower is provided in the supply air passage of the casing, and at least one wall surface of the wall surfaces of the supply air passage has a surface that is non-perpendicular to a surface orthogonal to the air flow direction,
A blower having a discharge port around the blade rotation axis is provided so as to be parallel to the ventilation direction of the blade rotation shaft, facing the discharge port of the blower on the wall surface of the supply air passage, and the supply air passage The wall surface of the closing plate that separates the other area in the casing has an inclined surface that is non-perpendicular to the plane orthogonal to the blade rotation axis, and at least the portion facing the discharge port of the blower is the other area in the casing. Overhang,
A compact air conditioner characterized in that a supply air passage is adjacent to another region in a casing provided with a heat exchanger via the closing plate.

A blower is provided in the supply air passage of the casing, and at least one wall surface of the wall surfaces of the supply air passage has a surface that is non-perpendicular to a surface orthogonal to the air flow direction,
A compact air conditioner having an inclined surface that is non-perpendicular to a surface orthogonal to a blade rotation axis on an inner surface of a casing door facing a discharge port around a blade rotation shaft of a blower.