JP5093172B2 - Air conditioner - Google Patents

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JP5093172B2
JP5093172B2 JP2009078324A JP2009078324A JP5093172B2 JP 5093172 B2 JP5093172 B2 JP 5093172B2 JP 2009078324 A JP2009078324 A JP 2009078324A JP 2009078324 A JP2009078324 A JP 2009078324A JP 5093172 B2 JP5093172 B2 JP 5093172B2
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大貴 澤田
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Fujitsu General Ltd
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Description

本発明は、空気調和機の構造に関する。
The present invention relates to the structure of an air conditioner.

従来の遠心送風機には、送風ファンを小型化することなくケーシングの小型化を図れるようにしたものとして、図４に示すように、側面に略円形状の空気吸込部ａを設け、略矩形状の空気吹出部ｂを前端部に設けた渦巻形のケーシングｃと、これら空気吸込部ａと空気吹出部ｂとを結ぶ空気通路に設けた遠心式の送風ファンｄとを備え、ケーシングｃの巻き始めノーズ部ｅの側端から空気吹出部ｂの側端にかけて、空気吸込部ａの外周面を順次拡大するように形成したものが知られている（例えば、特開２００６−１５２９３６号公報および特開平９−２８７７５６号公報）。   As shown in FIG. 4, the conventional centrifugal blower is provided with a substantially circular air suction portion a on the side surface so that the casing can be miniaturized without reducing the size of the blower fan. And a centrifugal blower fan d provided in an air passage connecting the air suction part a and the air blowing part b, and a winding of the casing c. A device is known in which the outer peripheral surface of the air suction portion a is first enlarged from the side end of the nose portion e to the side end of the air blowing portion b (see, for example, Japanese Patent Application Laid-Open No. 2006-152936 and a special one). (Kaihei 9-287756).

これにより、ケーシングの小型化を図ることができるとともに、送風量が減少してしまったり、騒音を発生させてしまうといった性能の低下が生じないようにしていた。   As a result, the casing can be reduced in size, and the deterioration in performance such as a decrease in the amount of blown air or generation of noise is prevented.

しかしながら、空気吸込部ａの外周面の傾斜角度を大きく形成できにくいため、小型化を図ったケーシングｃの後端部において、空気吸込部ａの外周面と、空気吸込部ａの側方に配置した図示しないファンモータとの間の隙間は、空気吸込部ａの外周面の傾斜角度を利用して大きく確保することが困難になって、該箇所から空気吸込部ａに吸い込まれる空気の抵抗を減少できにくくなる。   However, since it is difficult to form a large inclination angle of the outer peripheral surface of the air suction portion a, the rear end portion of the casing c with a reduced size is disposed on the outer peripheral surface of the air suction portion a and on the side of the air suction portion a. It is difficult to ensure a large gap between the fan motor (not shown) using the inclination angle of the outer peripheral surface of the air suction portion a, and the resistance of air sucked into the air suction portion a from the location is reduced. It becomes difficult to decrease.

空気吸込部ａに吸い込まれる空気の抵抗を減少させるには、送風ファンｄとケーシングｃとの隙間を大きくする必要があるため、この隙間が大きい上記公報に記載の遠心送風機を空気調和機に用いた場合、静圧を維持しつつ空気調和機の筐体の小型軽量化を図ることが困難になるという問題点を有していた。   In order to reduce the resistance of the air sucked into the air suction part a, it is necessary to increase the gap between the blower fan d and the casing c. Therefore, the centrifugal blower described in the above publication with a large gap is used for an air conditioner. In such a case, it is difficult to reduce the size and weight of the casing of the air conditioner while maintaining the static pressure.

特開２００６−１５２９３６号公報JP 2006-152936 A 特開平９−２８７７５６号公報JP-A-9-287756

そこで、本発明は上述した課題を解決するためになされたものであって、その目的は、静圧を維持しつつ筐体の小型軽量化を図った空気調和機を提供することにある。
Accordingly, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide an air conditioner that achieves a reduction in size and weight of the housing while maintaining a static pressure.

上述した目的を達成できるように構成するため、本発明は以下に示す特徴を備えている。   In order to achieve the above-described object, the present invention has the following features.

少なくとも一側面に略円形状の空気吸込部を備え、略矩形状の空気吹出部を前端部に設けた渦巻形のケーシングと、前記空気吸込部と前記空気吹出部とを結ぶ空気通路に設けた送風ファンと、同送風ファンに連結して前記空気吸込部の側方に設けたファンモータとを備えた遠心送風機と、
前記遠心送風機が設置され前記空気吸込部に連通する吸込口を有する送風機室と、熱交換器が設置され前記空気吹出部に連通する吹出口を有する熱交換器室とを備えた筐体とを備え、
前記ケーシングの側面における前記送風ファンの軸方向の長さが、前記空気吹出部から前記空気吸込部の側に向けて漸次縮小するように傾斜し、前記吸込口が、前記空気吹出部の対向位置となる前記ケーシングの後端部と、前記ファンモータとの間に臨ませるように設けられてなることを特徴としている。
A substantially circular air suction portion is provided on at least one side surface, and a spiral casing having a substantially rectangular air blowing portion provided at a front end portion thereof is provided in an air passage connecting the air suction portion and the air blowing portion. A centrifugal fan provided with a blower fan and a fan motor connected to the blower fan and provided on the side of the air suction portion;
A fan chamber having a suction port where the centrifugal blower is installed and communicating with the air suction portion, and a heat exchanger chamber having a heat exchanger where a heat exchanger is installed and communicating with the air blowing portion. Prepared,
The length in the axial direction of the blower fan on the side surface of the casing is inclined so as to gradually decrease from the air blowing portion toward the air suction portion, and the suction port is opposed to the air blowing portion. It is provided so that it may face between the rear-end part of the said casing which becomes and the said fan motor.

本発明によれば、静圧を維持しつつ筐体の小型軽量化を図った空気調和機を提供できる。
ADVANTAGE OF THE INVENTION According to this invention, the air conditioner which aimed at size reduction and weight reduction of the housing | casing can be provided, maintaining a static pressure.

本発明による遠心送風機およびそれを用いた空気調和機の平面図である。It is a top view of the centrifugal blower by this invention, and an air conditioner using the same. 本発明による遠心送風機およびそれを用いた空気調和機の説明図で、（Ａ）は図１に示すＡ−Ａ断面図であり、（Ｂ）は図２（Ａ）に示すＢ−Ｂ断面図である。It is explanatory drawing of the centrifugal blower by this invention, and an air conditioner using the same, (A) is AA sectional drawing shown in FIG. 1, (B) is BB sectional drawing shown in FIG. 2 (A). It is. 本発明による遠心送風機およびそれを用いた空気調和機の静圧特性を示す図で、（Ａ）は静圧（Ｐａ）と入力（Ｗ）との関係を示す図であり、（Ｂ）は静圧（Ｐａ）と風量（ｍ３／ｈ）との関係を示す図である。It is a figure which shows the static pressure characteristic of the centrifugal blower by this invention, and an air conditioner using the same, (A) is a figure which shows the relationship between static pressure (Pa) and input (W), (B) is static. It is a figure which shows the relationship between a pressure (Pa) and an air volume (m3 / h). 従来例による遠心送風機の斜視図である。It is a perspective view of the centrifugal blower by a prior art example.

以下、本発明を実施するための形態を、添付図面に基づいた実施例として詳細に説明する。   EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing this invention is demonstrated in detail as an Example based on an accompanying drawing.

本発明による遠心送風機１の構成について、図１と、図２（Ａ）および図２（Ｂ）とに基づいて以下に説明するとともに、この遠心送風機１が用いられている空気調和機１３の構成について、図１に基づいて以下に説明する。   The configuration of the centrifugal blower 1 according to the present invention will be described below based on FIG. 1, FIG. 2 (A) and FIG. 2 (B), and the configuration of the air conditioner 13 in which the centrifugal blower 1 is used. Will be described below with reference to FIG.

本発明による遠心送風機１は、両側面に略円形状の空気吸込部２を備え、略矩形状の空気吹出部３を前端部４ａに設けた渦巻形のケーシング４と、空気吸込部２と空気吹出部３とを結ぶ空気通路に設けた遠心式の送風ファン（シロッコファン）５とを備えている。   A centrifugal blower 1 according to the present invention is provided with a substantially circular air suction portion 2 on both side surfaces, a spiral casing 4 having a substantially rectangular air blowing portion 3 provided at a front end portion 4a, an air suction portion 2 and air. A centrifugal blower fan (sirocco fan) 5 provided in an air passage connecting the blowout part 3 is provided.

遠心式の送風ファン５は、ケーシング４の両側面に備えた空気吸込部２から空気を吸い込めるように、主板５ａの両側に複数の翼を環状に配設した多翼ファンと、主板５ａに接続されている多翼ファンの回転軸とからなる構成になっており、この多翼ファンの回転軸と、多翼ファンの回転軸を回転させるファンモータ６の駆動軸７とが同軸状に連結され、このファンモータ６は、その側部をケーシング４の空気吸込部２に近接させている。   The centrifugal blower fan 5 includes a multi-blade fan in which a plurality of blades are annularly arranged on both sides of the main plate 5a so as to suck air from the air suction portions 2 provided on both side surfaces of the casing 4, and a main plate 5a. The rotary shaft of the connected multi-blade fan is configured, and the rotary shaft of the multi-blade fan and the drive shaft 7 of the fan motor 6 that rotates the rotary shaft of the multi-blade fan are connected coaxially. The fan motor 6 has its side portion close to the air suction portion 2 of the casing 4.

これにより、ケーシング４の空気吸込部２の外周面２ａを傾斜させることによって、ファンモータ６の側部を、ケーシング４の空気吸込部２に近づけることができるようになって、遠心送風機１として小型化を図ることができるようになる。   Thus, by tilting the outer peripheral surface 2 a of the air suction portion 2 of the casing 4, the side portion of the fan motor 6 can be brought closer to the air suction portion 2 of the casing 4. It becomes possible to plan.

その際、筐体１１の前部に備えた吸込口１１ａに臨ませているケーシング４の空気吸込部２と、ファンモータ６との間（の隙間）が狭くならないように構成できるので、該箇所から吸い込まれて空気吸込部２に向かう空気流に対する抵抗が増加しなくなり、また同様に、ファンモータ６を近接させた空気吸込部２に対向する側の空気吸込部２に向かう空気流に対する抵抗も増加しなくなって、静圧を維持しつつ筐体１１の小型軽量化を図れるようにした空気調和機となる。   In that case, since it can comprise so that the space | gap between the air suction part 2 of the casing 4 facing the suction inlet 11a with which the front part of the housing | casing 11 was equipped, and the fan motor 6 may not become narrow, The resistance to the air flow toward the air suction portion 2 that is sucked from the air does not increase, and similarly, the resistance to the air flow toward the air suction portion 2 on the side facing the air suction portion 2 that is close to the fan motor 6 is also provided. The air conditioner can be reduced in size and weight while maintaining the static pressure without increasing.

本発明による遠心送風機１は、渦巻形のケーシング４と、ケーシング４内に設置された遠心式の送風ファン５と、送風ファン５に連結された駆動軸７を有するファンモータ６とからなる構成になっており、この遠心送風機１を用いた空気調和機１３は、空気調和機１３を構成する筐体１１の内部が、仕切板１０により、遠心送風機１が設置されている送風機室と、熱交換器８が設置されている熱交換器室とに区画されており、熱交換器室の側部には電装部１２が設けられている。   The centrifugal blower 1 according to the present invention includes a spiral casing 4, a centrifugal blower fan 5 installed in the casing 4, and a fan motor 6 having a drive shaft 7 connected to the blower fan 5. The air conditioner 13 using the centrifugal blower 1 is configured such that the inside of the casing 11 constituting the air conditioner 13 is heat-exchanged with the blower chamber in which the centrifugal blower 1 is installed by the partition plate 10. The heat exchanger room is divided into a heat exchanger room, and an electrical component 12 is provided on the side of the heat exchanger room.

これにより、ファンモータ６を起動し送風ファン５を駆動することにより、図１と、図２（Ａ）とに示す矢印ａのように、筐体１１に備えた送風機室内に吸込口１１ａから空気が吸い込まれたのち、空気吸込部２からケーシング４内に吸い込まれ、ケーシング４内に設置されている送風ファン５を経て、ケーシング４の前端部４ａに設けられている空気吹出部３から吹き出されるようになっている。   As a result, the fan motor 6 is activated and the blower fan 5 is driven, so that the air from the suction port 11a enters the blower chamber provided in the housing 11 as shown by the arrow a in FIG. 1 and FIG. Is sucked into the casing 4 from the air suction portion 2 and blown out from the air blowing portion 3 provided at the front end portion 4 a of the casing 4 through the blower fan 5 installed in the casing 4. It has become so.

なお、筐体１１に備えている送風機室に設けられた吸込口１１ａは、ケーシング４に設けられた空気吸込部２に連通するように設けられた構成になっている。   The suction port 11 a provided in the blower chamber provided in the housing 11 is configured to communicate with the air suction part 2 provided in the casing 4.

ケーシング４に設けられた空気吹出部３は、筐体１１内を区画する仕切板１０を挿通して、筐体１１に備えている熱交換器室内に突出するように構成されている。   The air blowing portion 3 provided in the casing 4 is configured to pass through a partition plate 10 that partitions the inside of the housing 11 and protrudes into a heat exchanger chamber provided in the housing 11.

筐体１１に備えた熱交換器室は、ケーシング４に設けられた空気吹出部３の前方である空気流通路からなり、この空気流通路には熱交換器８が配置されており、熱交換器８の下部には、この熱交換器８から滴下するドレン水を受けるためのドレンパン９が設置された構成になっている。   The heat exchanger chamber provided in the housing 11 is composed of an air flow passage in front of the air blowing portion 3 provided in the casing 4, and a heat exchanger 8 is disposed in the air flow passage. A drain pan 9 for receiving drain water dripping from the heat exchanger 8 is installed at the lower part of the vessel 8.

これにより、ケーシング４の前端部４ａに設けられた空気吹出部３から、筐体１１に備えた空気流通路からなる熱交換器室に吹き出された空気は、熱交換器８によって熱交換されたのち、図１と、図２（Ａ）とに示す矢印ｂのように、筐体１１に備えた熱交換器室に設けられている吹出口１１ｂから室内に吹き出されて空気調和が行われることになる。   As a result, the air blown from the air blowing portion 3 provided at the front end portion 4 a of the casing 4 to the heat exchanger chamber including the air flow passage provided in the housing 11 was heat-exchanged by the heat exchanger 8. After that, as indicated by the arrow b shown in FIG. 1 and FIG. 2 (A), the air is conditioned by being blown into the room from the air outlet 11b provided in the heat exchanger room provided in the housing 11. become.

なお、筐体１１に備えた熱交換器室に設けられている吹出口１１ｂは、図１と、図２（Ａ）とに矢印ｂで示す調和空気の吹出位置に設けられている。   In addition, the blower outlet 11b provided in the heat exchanger chamber provided in the housing | casing 11 is provided in the blowing position of the conditioned air shown by the arrow b in FIG. 1 and FIG. 2 (A).

次に、上述した構成でなる遠心送風機１の小型化を図るとともに、この遠心送風機１を用いることにより、空気調和機１３として静圧を維持しつつ筐体１１の小型軽量化に寄与できるようにした構成について、実施例１として示す図１と、図２（Ａ）および図２（Ｂ）とに基づいて以下に説明する。   Next, the centrifugal blower 1 having the above-described configuration is reduced in size, and by using the centrifugal blower 1, the air conditioner 13 can contribute to reducing the size and weight of the casing 11 while maintaining a static pressure. The configuration described above will be described below based on FIG. 1 shown as the first embodiment and FIGS. 2 (A) and 2 (B).

遠心送風機１は、送風ファン５の回転軸方向となるケーシング４の幅寸法が、ケーシング４の前端部４ａとなる空気吹出部３の側から後端部４ｂに向けて、空気吸込部２の外周面２ａが傾斜して徐々に縮小するように形成された構成になっている。   The centrifugal blower 1 has an outer periphery of the air suction portion 2 such that the width dimension of the casing 4 in the rotational axis direction of the blower fan 5 is directed from the air blowing portion 3 side, which is the front end portion 4a of the casing 4, toward the rear end portion 4b. The surface 2a is inclined so as to be gradually reduced.

ケーシング４の幅寸法は、ケーシング４の前端部４ａとなる空気吹出部３の幅寸法Ｌ１から、ケーシング４の後端部４ｂの幅寸法Ｌ２に向けて、空気吸込部２の外周面２ａが徐々に縮小するように平面状に傾斜することにより、２°〜５°程度の図２（Ｂ）に示す傾斜角θを有してＬ１＞Ｌ２の関係となるように形成されている。   The width dimension of the casing 4 is such that the outer peripheral surface 2a of the air suction part 2 gradually increases from the width dimension L1 of the air blowing part 3 serving as the front end part 4a of the casing 4 toward the width dimension L2 of the rear end part 4b of the casing 4. By being inclined in a planar shape so as to be reduced, the inclination angle θ shown in FIG. 2B is about 2 ° to 5 °, and the relationship of L1> L2 is established.

その際、図２（Ｂ）に示す送風ファン５の幅寸法Ｄは小型化することなく、送風ファン５と空気吸込部２との間に隙間Ｇを有したままの構成になっている。   At that time, the width D of the blower fan 5 shown in FIG. 2 (B) is configured such that the gap G remains between the blower fan 5 and the air suction portion 2 without being reduced in size.

これにより、送風ファン５の幅寸法Ｄは小型化することなく、ケーシング４の幅寸法を、ケーシング４の前端部４ａとなる空気吹出部３の側から後端部４ｂに向かうにしたがって小型化できるようになる。   Thereby, without reducing the width dimension D of the blower fan 5, the width dimension of the casing 4 can be reduced as it goes from the air blowing part 3 side, which is the front end part 4a of the casing 4, toward the rear end part 4b. It becomes like this.

その際、ケーシング４の幅寸法を小型化したことにより、送風ファン５の回転軸に同軸状に連結される駆動軸７を備えたファンモータ６は、図２（Ｂ）に示す傾斜角θを有して傾斜させた空気吸込部２の外周面２ａに近づけることができるようになって、遠心送風機１として小型化を図れるようになる。   At that time, by reducing the width of the casing 4, the fan motor 6 having the drive shaft 7 coaxially connected to the rotating shaft of the blower fan 5 has an inclination angle θ shown in FIG. The centrifugal blower 1 can be reduced in size by being able to approach the outer peripheral surface 2a of the air suction portion 2 that is inclined.

また、遠心送風機１は、空気調和機１３に用いられた際、ケーシング４の空気吸込部２の外周面２ａと、ファンモータ６との間の隙間が、筐体１１の前部に備えた吸込口１１ａに向かうにしたがって拡大するように構成されているので、吸込口１１ａから吸い込まれて空気吸込部２に向かう空気流に対する抵抗を減少させることで空気流量は増加することになって、空気調和機１３として静圧を維持しつつ筐体１１の小型軽量化を図れるようになる。   Further, when the centrifugal blower 1 is used in the air conditioner 13, the suction between the outer peripheral surface 2 a of the air suction portion 2 of the casing 4 and the fan motor 6 is provided in the front portion of the housing 11. Since it is configured to expand toward the port 11a, the air flow rate is increased by reducing the resistance to the air flow sucked from the suction port 11a and directed to the air suction unit 2, and thus air conditioning. As the machine 13, the casing 11 can be reduced in size and weight while maintaining a static pressure.

同様に、ケーシング４の両側面に備えた略円形状の空気吸込部２の外周面２ａを傾斜させることで、ファンモータ６を近接させた空気吸込部２に対向する側の空気吸込部２に向かう空気流に対する抵抗も増加しなくなって、静圧を維持しつつ筐体１１の小型軽量化を図れるようにした空気調和機となる。   Similarly, by inclining the outer peripheral surface 2a of the substantially circular air suction portion 2 provided on both side surfaces of the casing 4, the air suction portion 2 on the side facing the air suction portion 2 close to the fan motor 6 is provided. The resistance to the air flow to which it goes is not increased, and the air conditioner can be reduced in size and weight while maintaining the static pressure.

次に、ケーシング４の側面に設けられた空気吸込部２の外周面２ａを傾斜させることなく、図２（Ｂ）の破線で示すように、Ｌ２＝Ｌ２’となるようにケーシング４の小型化を図る場合の構成を従来の遠心送風機とし、空気吸込部２の外周面２ａを傾斜させたケーシング４の構成を本発明による遠心送風機１とした時の「静圧（Ｐａ）−入力（Ｗ）」の関係について、図２（Ｂ）と、図３（Ａ）とに基づいて以下に説明する。   Next, the casing 4 is reduced in size so that L2 = L2 ′ as shown by the broken line in FIG. 2B without inclining the outer peripheral surface 2a of the air suction portion 2 provided on the side surface of the casing 4. "Static pressure (Pa)-input (W)" when the configuration of the conventional centrifugal blower is used and the configuration of the casing 4 in which the outer peripheral surface 2a of the air suction portion 2 is inclined is the centrifugal blower 1 according to the present invention. ”Will be described below with reference to FIG. 2B and FIG.

従来の遠心送風機および本発明による遠心送風機１における静圧（Ｐａ）−入力（Ｗ）の関係において、図３（Ａ）に示す破線および実線のように、入力（Ｗ）に対する静圧（Ｐａ）は、破線で示す従来の遠心送風機よりも、実線で示す本発明による遠心送風機１が上回っている。   In the relationship of static pressure (Pa) -input (W) in the conventional centrifugal blower and the centrifugal blower 1 according to the present invention, the static pressure (Pa) with respect to the input (W) as indicated by the broken line and the solid line shown in FIG. Is higher than the centrifugal blower 1 according to the present invention indicated by a solid line than the conventional centrifugal blower indicated by a broken line.

これにより、図２（Ｂ）の破線で示すように、Ｌ２＝Ｌ２’となるようにケーシング４の小型化を図る場合の構成に較べて、Ｌ１＞Ｌ２となるようにケーシング４を傾斜させて小型化を図る構成は、入力（Ｗ）に対する静圧（Ｐａ）を大きくすることができるようになることから、本発明の構成により、ケーシング４の小型化を図る以前の構成に対し、ケーシング４の小型化を図って、空気吸込部２に吸い込まれる吸込空気の抵抗を減少できるようにした遠心送風機１となる。   As a result, as shown by the broken line in FIG. 2B, the casing 4 is inclined so that L1> L2 as compared with the configuration in which the casing 4 is downsized so that L2 = L2 ′. Since the configuration for reducing the size can increase the static pressure (Pa) with respect to the input (W), the configuration of the present invention allows the casing 4 to be compared with the configuration before the casing 4 is reduced in size. Therefore, the centrifugal blower 1 is configured such that the resistance of the suction air sucked into the air suction portion 2 can be reduced.

同様に、ケーシング４の側面に設けられた空気吸込部２の外周面２ａを傾斜させることなく、図２（Ｂ）の破線で示すように、Ｌ２＝Ｌ２’となるようにケーシング４の小型化を図る場合の構成を従来の遠心送風機とし、空気吸込部２の外周面２ａを傾斜させたケーシング４の構成を本発明による遠心送風機１とした時の「静圧（Ｐａ）−風量（ｍ３／ｈ）」の関係について、図２（Ｂ）と、図３（Ｂ）とに基づいて以下に説明する。   Similarly, the casing 4 is reduced in size so that L2 = L2 ′ as shown by the broken line in FIG. 2B without inclining the outer peripheral surface 2a of the air suction portion 2 provided on the side surface of the casing 4. "Static pressure (Pa)-air volume (m3 /) when the structure of the casing 4 in which the outer peripheral surface 2a of the air suction portion 2 is inclined is the centrifugal fan 1 according to the present invention. h) ”will be described below with reference to FIG. 2B and FIG.

従来の遠心送風機および本発明による遠心送風機１における静圧（Ｐａ）−風量（ｍ３／ｈ）の関係において、図３（Ｂ）に示す破線および実線のように、静圧（Ｐａ）に対する風量（ｍ３／ｈ）は、破線で示す従来の遠心送風機よりも、実線で示す本発明による遠心送風機１が上回っている。   In the relationship between the static pressure (Pa) and the air volume (m3 / h) in the conventional centrifugal fan and the centrifugal fan 1 according to the present invention, as shown by the broken line and the solid line in FIG. m3 / h) is higher than the centrifugal blower 1 according to the present invention indicated by the solid line than the conventional centrifugal blower indicated by the broken line.

これにより、図２（Ｂ）の破線で示すように、Ｌ２＝Ｌ２’となるようにケーシング４の小型化を図る構成に較べて、Ｌ１’＞Ｌ２となるようにケーシング４を傾斜させて小型化を図る構成は、静圧（Ｐａ）に対する風量（ｍ３／ｈ）を大きくすることができるようになることから、本発明の構成により、ケーシング４の小型化を図る以前の構成に対し、ケーシング４の小型化を図って、空気吸込部２に吸い込まれる吸込空気の抵抗を減少できるようにした遠心送風機１となる。   As a result, as shown by the broken line in FIG. 2 (B), the casing 4 is inclined so that L1 ′> L2 and is smaller than the configuration in which the casing 4 is downsized so that L2 = L2 ′. Since the structure to achieve the reduction can increase the air volume (m3 / h) with respect to the static pressure (Pa), the casing of the present invention is different from the structure before the casing 4 is reduced in size by the structure of the present invention. Therefore, the centrifugal blower 1 is configured so that the resistance of the suction air sucked into the air suction portion 2 can be reduced.

なお、本発明による遠心送風機１は、図１に示すように、ケーシング４の両側面に設けられた空気吸込部２の外周面２ａを傾斜させることによって、空気吸込部２に吸い込まれる吸込空気の抵抗を減少できるようにしたものとして説明しているが、ケーシング４の一側面にのみ設けられた空気吸込部２の外周面２ａを傾斜させるように構成してもよい。   In addition, as shown in FIG. 1, the centrifugal blower 1 according to the present invention tilts the outer peripheral surface 2a of the air suction portion 2 provided on both side surfaces of the casing 4 so that the suction air sucked into the air suction portion 2 is reduced. Although it has been described that the resistance can be reduced, the outer peripheral surface 2a of the air suction portion 2 provided only on one side surface of the casing 4 may be inclined.

以上説明したように、本発明の構成によれば、静圧を維持しつつ筐体の小型軽量化を図った空気調和機を提供できる。
As described above, according to the configuration of the present invention, it is possible to provide an air conditioner in which the casing is reduced in size and weight while maintaining a static pressure.

１ 遠心送風機
２ 空気吸込部
２ａ 外周面
３ 空気吹出部
４ ケーシング
４ａ 前端部
４ｂ 後端部
５ 送風ファン（シロッコファン）
５ａ 主板
６ ファンモータ
７ 駆動軸
８ 熱交換器
９ ドレンパン
１０ 仕切板
１１ 筐体
１１ａ 吸込口
１１ｂ 吹出口
１２ 電装部
１３ 空気調和機 DESCRIPTION OF SYMBOLS 1 Centrifugal blower 2 Air suction part 2a Outer peripheral surface 3 Air blowing part 4 Casing 4a Front end part 4b Rear end part 5 Blower fan (sirocco fan)
5a Main plate 6 Fan motor 7 Drive shaft 8 Heat exchanger 9 Drain pan 10 Partition plate 11 Housing 11a Suction port 11b Air outlet 12 Electrical component 13 Air conditioner

Claims (1)

少なくとも一側面に略円形状の空気吸込部を備え、略矩形状の空気吹出部を前端部に設けた渦巻形のケーシングと、前記空気吸込部と前記空気吹出部とを結ぶ空気通路に設けた送風ファンと、同送風ファンに連結して前記空気吸込部の側方に設けたファンモータとを備えた遠心送風機と、
前記遠心送風機が設置され前記空気吸込部に連通する吸込口を有する送風機室と、熱交換器が設置され前記空気吹出部に連通する吹出口を有する熱交換器室とを備えた筐体とを備え、
前記ケーシングの側面における前記送風ファンの軸方向の長さが、前記空気吹出部から前記空気吸込部の側に向けて漸次縮小するように傾斜し、前記吸込口が、前記空気吹出部の対向位置となる前記ケーシングの後端部と、前記ファンモータとの間に臨ませるように設けられてなることを特徴とする空気調和機。
A substantially circular air suction portion is provided on at least one side surface, and a spiral casing having a substantially rectangular air blowing portion provided at a front end portion thereof is provided in an air passage connecting the air suction portion and the air blowing portion. A centrifugal fan provided with a blower fan and a fan motor connected to the blower fan and provided on the side of the air suction portion;
A fan chamber having a suction port where the centrifugal blower is installed and communicating with the air suction portion, and a heat exchanger chamber having a heat exchanger where a heat exchanger is installed and communicating with the air blowing portion. Prepared,
The length in the axial direction of the blower fan on the side surface of the casing is inclined so as to gradually decrease from the air blowing portion toward the air suction portion, and the suction port is opposed to the air blowing portion. An air conditioner characterized in that the air conditioner is provided so as to face between a rear end portion of the casing and the fan motor.
JP2009078324A 2009-03-27 2009-03-27 Air conditioner Active JP5093172B2 (en)

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Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5421608A (en) * 1977-07-18 1979-02-19 Sanyo Electric Co Ltd Centrifugal fan

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