JP2011012881A - Indoor machine for air conditioning device - Google Patents

Indoor machine for air conditioning device Download PDF

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JP2011012881A
JP2011012881A JP2009156956A JP2009156956A JP2011012881A JP 2011012881 A JP2011012881 A JP 2011012881A JP 2009156956 A JP2009156956 A JP 2009156956A JP 2009156956 A JP2009156956 A JP 2009156956A JP 2011012881 A JP2011012881 A JP 2011012881A
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indoor unit
impeller
rib
front panel
panel
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JP5287549B2 (en
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Kenichi Sakota
健一 迫田
Hironori Nagai
宏典 永井
Yusuke Adachi
祐介 安達
Hitoshi Suzuki
斉 鈴木
Shoji Yamada
彰二 山田
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Mitsubishi Electric Corp
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Abstract

PROBLEM TO BE SOLVED: To reduce noise while suppressing degradation in power efficiency in the indoor machine of an air conditioning device having a suction opening at a lower end of a front panel.SOLUTION: This indoor unit 1 of the air conditioning device includes an impeller 2 rotated around a shaft and having a plurality of blades 7 in the circumferential direction, and heat exchangers 13, 14 disposed upstream of the impeller 2, further includes a top panel 11 having an upper suction opening 12 for sucking air and disposed on the top face of the indoor machine 1, a front panel 8 having a lower suction opening 9 for sucking air on its lower end and disposed on the front face of the indoor unit 1, and a supporting panel 15 disposed between the top panel 11 and the front panel 8, and the heat exchangers 13, 14, and a rib 10 extending with the height position variable in the axial direction of the impeller 2, is disposed between the front panel 8 and the supporting panel 15.

Description

この発明は、空気調和装置の室内機に関するものである。   The present invention relates to an indoor unit of an air conditioner.

空気調和装置の室内機は、室内空気を吸気する吸込口が設けられた前面パネルと、吸込口から吸気された空気と冷媒とが熱交換するための熱交換器と、複数の羽根とを有し熱交換器が熱交換した空気を吸い込んで吹き出すファンとを備えている。このような空気調和装置の室内機においては、空気が熱交換器からファンに流入する位置で発生する騒音を抑えることが問題となっている。   An indoor unit of an air conditioner has a front panel provided with a suction port for sucking indoor air, a heat exchanger for heat exchange between air sucked from the suction port and a refrigerant, and a plurality of blades. And a fan that sucks and blows out air that has been heat-exchanged by the heat exchanger. In such an indoor unit of an air conditioner, there is a problem of suppressing noise generated at a position where air flows from the heat exchanger to the fan.

従来の空気調和装置の室内機においては、ファン流入部での風速をファン軸方向に変化させファン流入部での音の発生タイミングを変化させることによって、ファン流入位置での騒音の発生を抑制することを目的に、前面パネルの吸込口の吸込面積、前面パネルの横格子の格子角度、熱交換器のフィンピッチ、または熱交換器とファンとの距離をファン軸方向に変化させたものがある。（例えば、特許文献１参照）。   In a conventional air conditioner indoor unit, noise generation at the fan inflow position is suppressed by changing the wind speed at the fan inflow portion in the fan axial direction and changing the sound generation timing at the fan inflow portion. For this purpose, the suction area of the suction opening of the front panel, the lattice angle of the horizontal lattice of the front panel, the fin pitch of the heat exchanger, or the distance between the heat exchanger and the fan is changed in the fan axial direction. . (For example, refer to Patent Document 1).

特開２００５−７６９５２（第２頁〜第６頁、図１）JP-A-2005-76952 (2nd to 6th pages, FIG. 1)

しかしながら、上記特許文献１に記載された空気調和装置の室内機では、前面パネルの吸込口の吸込面積、熱交換器のフィンピッチまたは熱交換器とファンとの距離をファン軸方向に変化させる場合には、空気の流路の圧力損失が増大し、空気調和装置の電力効率が低下する。また、意匠性を向上させるため、前面パネルに格子状の吸込口を設けず下端部に吸込口を設けた空気調和装置の室内機では、横格子の格子角度をファン軸方向に変化させることができない。
この発明は、前面パネルの下端部に吸込口を設けた空気調和装置の室内機において、電力効率の悪化を抑制しながら、騒音を低減することを目的としている。 However, in the indoor unit of the air conditioner described in Patent Document 1, the suction area of the suction port of the front panel, the fin pitch of the heat exchanger, or the distance between the heat exchanger and the fan is changed in the fan axial direction. The pressure loss of the air flow path increases, and the power efficiency of the air conditioner decreases. In order to improve the design, in an air conditioner indoor unit in which the front panel is not provided with a lattice-shaped suction port but a lower end is provided with a suction port, the lattice angle of the horizontal lattice can be changed in the fan axis direction. Can not.
An object of the present invention is to reduce noise while suppressing deterioration of power efficiency in an indoor unit of an air conditioner provided with a suction port at a lower end portion of a front panel.

この発明による空気調和装置の室内機は、軸を中心に回転し周方向に複数の羽根を有する羽根車と、前記羽根車の上流側に設けられた熱交換器とを備えた空気調和装置の室内機であって、空気を吸い込む上吸込口を有し前記室内機の上面に設けられた上面パネルと、空気を吸い込む下吸込口を下端部に有し前記室内機の前面に設けられた前面パネルと、前記上面パネルおよび前記前面パネルと前記熱交換器との間に設けられた支持パネルとを備え、高さ方向の位置が前記羽根車の軸方向に異なるよう延在するリブを前記前面パネルと前記支持パネルとの間に設けたものである。   An indoor unit of an air conditioner according to the present invention is an air conditioner provided with an impeller that rotates around an axis and has a plurality of blades in the circumferential direction, and a heat exchanger provided on the upstream side of the impeller. An indoor unit having an upper suction port for sucking air and having a top panel provided on the upper surface of the indoor unit, and a front surface having a lower suction port for sucking air at the lower end and provided on the front surface of the indoor unit A rib that extends in such a manner that the position in the height direction differs in the axial direction of the impeller, and a front panel, and a support panel provided between the top panel and the front panel and the heat exchanger. It is provided between the panel and the support panel.

この発明の空気調和装置の室内機によれば、前面パネルの下端部に吸込口を設けた空気調和装置の室内機において、電力効率の悪化を抑制しながら、騒音を低減する空気調和装置の室内機を提供することができる。   According to the indoor unit of the air conditioner of the present invention, in the indoor unit of the air conditioner provided with a suction port at the lower end of the front panel, the indoor unit of the air conditioner that reduces noise while suppressing deterioration of power efficiency. Machine can be provided.

この発明の実施の形態１による空気調和装置の室内機における羽根車の軸方向に垂直な面での断面図である。It is sectional drawing in a surface perpendicular | vertical to the axial direction of the impeller in the indoor unit of the air conditioning apparatus by Embodiment 1 of this invention. この発明の実施の形態１による空気調和装置の室内機における前面パネルを背面側から見た斜視図である。It is the perspective view which looked at the front panel in the indoor unit of the air conditioning apparatus by Embodiment 1 of this invention from the back side. この発明の実施の形態１による空気調和装置の室内機における前面パネルの他の例を背面側から見た斜視図である。It is the perspective view which looked at the other example of the front panel in the indoor unit of the air conditioning apparatus by Embodiment 1 of this invention from the back side. この発明の実施の形態１による空気調和装置と従来の空気調和装置の騒音の周波数特性を示す図である。It is a figure which shows the frequency characteristic of the noise of the air conditioning apparatus by Embodiment 1 of this invention and the conventional air conditioning apparatus. この発明の実施の形態１による空気調和装置の室内機におけるリブ長さ比と卓越音圧レベルとの関係を示す図である。It is a figure which shows the relationship between the rib length ratio and the prevailing sound pressure level in the indoor unit of the air conditioning apparatus by Embodiment 1 of this invention. この発明の実施の形態２による空気調和装置の室内機における羽根車の軸方向に垂直な面での断面図である。It is sectional drawing in a surface perpendicular | vertical to the axial direction of the impeller in the indoor unit of the air conditioning apparatus by Embodiment 2 of this invention. この発明の実施の形態３による空気調和装置の室内機における羽根車の軸方向に垂直な面での断面図である。It is sectional drawing in a surface perpendicular | vertical to the axial direction of the impeller in the indoor unit of the air conditioning apparatus by Embodiment 3 of this invention.

実施の形態１．
図１は、この発明の実施の形態１による空気調和装置の室内機における羽根車の軸方向に垂直な面での断面図である。また、図２は、この発明の実施の形態１による空気調和装置の室内機における前面パネルを背面側から見た斜視図である。図において、同一の符号を付したものは、同一またはこれに相当するものであり、このことは、明細書の全文において共通することである。 Embodiment 1 FIG.
1 is a cross-sectional view taken along a plane perpendicular to the axial direction of an impeller in an indoor unit of an air-conditioning apparatus according to Embodiment 1 of the present invention. Moreover, FIG. 2 is the perspective view which looked at the front panel in the indoor unit of the air conditioning apparatus by Embodiment 1 of this invention from the back side. In the drawings, the same reference numerals are the same or equivalent, and this is common throughout the entire specification.

図１において、室内に設けられる空気調和装置の室内機１は、背面側に設けられたケーシング３、前面側に設けられたスタビライザー４、およびケーシング３とスタビライザー４との間に設けられた羽根車２とを有するクロスフローファン５を備えている。羽根車２は、両端および軸方向に複数設けられた円板状の支持板６と、支持板６の外周側に周方向に所定のピッチで設けられる複数の羽根７とを有し、羽根車軸周りに回転自在に室内機１に設置されている。   In FIG. 1, an indoor unit 1 of an air conditioner provided indoors includes a casing 3 provided on the back side, a stabilizer 4 provided on the front side, and an impeller provided between the casing 3 and the stabilizer 4. 2 is provided. The impeller 2 includes a plurality of disk-shaped support plates 6 provided at both ends and in the axial direction, and a plurality of blades 7 provided at a predetermined pitch in the circumferential direction on the outer peripheral side of the support plate 6. It is installed in the indoor unit 1 so as to be rotatable around.

羽根車２の上流側には、空気と冷媒とを熱交換する熱交換器１３，１４が設けられており、羽根車２の軸方向に複数設けられたフィンと、これらフィンを貫通するように設けられ内部を冷媒が流れる伝熱管とを有する。図１に示す室内機１においては、熱交換器１３，１４は、前面側に設けられた前面側熱交換器１３と背面側に設けられた背面側熱交換器１４とで、羽根車２の上流側を覆うように逆Ｖ字状に配設されている。   On the upstream side of the impeller 2, heat exchangers 13 and 14 for exchanging heat between the air and the refrigerant are provided, and a plurality of fins provided in the axial direction of the impeller 2 and the fins are penetrated. And a heat transfer tube through which the refrigerant flows. In the indoor unit 1 shown in FIG. 1, the heat exchangers 13, 14 include a front side heat exchanger 13 provided on the front side and a back side heat exchanger 14 provided on the back side. It is arranged in an inverted V shape so as to cover the upstream side.

室内機１の上面に設けられた上面パネル１１は、空気を吸い込むために桟状または格子状の開口を上吸込口１２として有する。室内機１の前面であって、上端部から羽根車２の前面側に前面パネル８が設けられ、上面パネル１１と熱交換器１３，１４との間および前面パネル８と前面側熱交換器１３との間に支持パネル１５が設けられる。支持パネル１５は、桟状の開口１６を複数有し、支持パネル１５の前面側および上面側にフィルター１７が配設される。   The upper panel 11 provided on the upper surface of the indoor unit 1 has a bar-like or grid-like opening as the upper inlet 12 for sucking air. A front panel 8 is provided on the front side of the indoor unit 1 from the upper end to the front side of the impeller 2, and between the upper panel 11 and the heat exchangers 13 and 14 and between the front panel 8 and the front side heat exchanger 13. A support panel 15 is provided between the two. The support panel 15 has a plurality of bar-shaped openings 16, and filters 17 are disposed on the front side and the upper side of the support panel 15.

スタビライザー４は、支持パネル１５の下端からケーシング３の下部と相対するように羽根車２側に突出して配設されている。また、前面パネル８、ケーシング３、スタビライザー４および上面パネル１１の長手方向は、羽根車２の軸方向に平行に配置され、前面パネル８、ケーシング３、スタビライザー４および上面パネル１１の両端に側壁板が設けられ、ケーシング３、スタビライザー４および側壁板に囲まれた開口が吹出口１１を構成する。   The stabilizer 4 is disposed so as to protrude from the lower end of the support panel 15 toward the impeller 2 so as to face the lower portion of the casing 3. The longitudinal direction of the front panel 8, the casing 3, the stabilizer 4, and the top panel 11 is arranged in parallel to the axial direction of the impeller 2, and side wall plates are provided at both ends of the front panel 8, the casing 3, the stabilizer 4, and the top panel 11. The opening surrounded by the casing 3, the stabilizer 4 and the side wall plate constitutes the air outlet 11.

前面パネル８の背面側であって、前面パネル８と支持パネル１５との間には、羽根車２の方向（背面側）に突出するリブ１０が設けられている。図２においては、羽根車２の図示を省略しているが、以降、羽根車２の回転軸方向を単に軸方向、羽根車２の回転方向を単に周方向と記載する。前面パネル８は、下端部に切りかきが形成され、スタビライザー４との間にスリット状の開口を、空気を吸い込む下吸込口９として有する。リブ１０は、前面パネル８の背面側に下吸込口９のやや上側から羽根車２に向けて設置されている。また、リブ１０は、下吸込口９を軸方向（長手方向）に覆うように形成され、かつリブ１０を形成する平面は、軸方向に対し湾曲するように構成されており、室内機１の高さ方向（図１の点線矢印方向）の位置が軸方向に異なるように延在する。   A rib 10 is provided on the back side of the front panel 8 and between the front panel 8 and the support panel 15 so as to protrude in the direction of the impeller 2 (back side). Although the illustration of the impeller 2 is omitted in FIG. 2, hereinafter, the rotational axis direction of the impeller 2 is simply referred to as an axial direction, and the rotational direction of the impeller 2 is simply referred to as a circumferential direction. The front panel 8 is formed with a notch at the lower end, and has a slit-like opening between the stabilizer 4 and the lower suction port 9 for sucking air. The rib 10 is installed on the back side of the front panel 8 from the slightly upper side of the lower suction port 9 toward the impeller 2. In addition, the rib 10 is formed so as to cover the lower suction port 9 in the axial direction (longitudinal direction), and a plane forming the rib 10 is configured to be curved with respect to the axial direction. It extends so that the position in the height direction (the direction of the dotted arrow in FIG. 1) differs in the axial direction.

上記のように構成された空気調和装置の室内機１では、モータによって羽根車２が回転すると、空気が上吸込口１２および下吸込口１３から吸込まれ、フィルター１６、支持パネル１５および熱交換器１３，１４を通過して、羽根車２を貫流する。このとき、ケーシング３の上端は、羽根車２の上吸込口側まで延設しており、羽根車２を貫流した空気は、ケーシング３によって室内機１の吹出口１１に案内されるようになっている。空気は、ケーシング３とスタビライザー４とが相対する空間を通過して吹出口１１から室内に吹き出される。   In the indoor unit 1 of the air conditioner configured as described above, when the impeller 2 is rotated by the motor, air is sucked from the upper suction port 12 and the lower suction port 13, and the filter 16, the support panel 15, and the heat exchanger Passes 13 and 14 and flows through the impeller 2. At this time, the upper end of the casing 3 extends to the upper suction port side of the impeller 2, and the air flowing through the impeller 2 is guided to the outlet 11 of the indoor unit 1 by the casing 3. ing. The air passes through a space where the casing 3 and the stabilizer 4 are opposed to each other and is blown into the room from the air outlet 11.

ここで、前面パネル８の背面側には、リブ１０が軸方向に対し湾曲するように設置されているので、下吸込口９および上吸込口１２から吸込まれて、羽根車２の前面側で合流した空気が羽根車２に流入する周方向位置は、軸方向に変化する。   Here, since the rib 10 is installed on the back side of the front panel 8 so as to be curved with respect to the axial direction, it is sucked in from the lower suction port 9 and the upper suction port 12, and on the front side of the impeller 2. The circumferential position where the merged air flows into the impeller 2 changes in the axial direction.

一般にクロスフローファン５においては、羽根車２の内部のスタビライザー４の近傍に最も低圧の領域が生じる。前面パネル８の下端に下吸込口９が設置された従来の空気調和装置の室内機１の場合には、下吸込口９から流入した気流と、上吸込口１２から流入した気流の一部とが、羽根車２の前面側で合流し、流速の速い気流となって羽根車２に流入する。そのため、流速の速い気流が流入する羽根車２の周方向位置が軸方向に同一となるので、風量変動および圧力変動の同時性が強まり、離散周波数騒音が発生する。   In general, in the cross flow fan 5, the lowest pressure region is generated in the vicinity of the stabilizer 4 inside the impeller 2. In the case of the indoor unit 1 of the conventional air conditioner in which the lower suction port 9 is installed at the lower end of the front panel 8, the airflow flowing from the lower suction port 9 and a part of the airflow flowing from the upper suction port 12 However, they merge at the front side of the impeller 2 and flow into the impeller 2 as an air current having a high flow velocity. Therefore, since the circumferential direction position of the impeller 2 into which the airflow having a high flow velocity flows is the same in the axial direction, the simultaneity of the air volume fluctuation and the pressure fluctuation is increased, and discrete frequency noise is generated.

これに対し、本発明の空気調和装置の室内機１においては、前面パネル８と支持パネル１５との間に高さ方向の位置が軸方向に異なるようにリブ１０を設置することによって、羽根車２の前面側で合流した流速の速い気流が羽根車２に流入する周方向位置が軸方向に変化するので、風量変動および圧力変動の同時性が弱まり、離散周波数騒音の発生を抑制することができる。また、本発明の実施の形態１に示す空気調和装置の室内機１においては、空気の流路の圧力損失を増大させることがないので、電力効率の悪化を抑制しながら、騒音を低減することができる。さらに、下吸込口１３および上吸込口１２の面積を軸方向に一定としているので、吸込み面積の減少による電力効率の悪化を招くことなく、騒音を低減することができる。   On the other hand, in the indoor unit 1 of the air conditioning apparatus of the present invention, the impeller is installed by installing the rib 10 so that the position in the height direction differs between the front panel 8 and the support panel 15 in the axial direction. Since the circumferential position at which the airflow with a high flow velocity merged on the front side of 2 flows into the impeller 2 changes in the axial direction, the simultaneity of the air volume fluctuation and the pressure fluctuation is weakened, and the generation of discrete frequency noise can be suppressed. it can. Moreover, in the indoor unit 1 of the air conditioning apparatus shown in Embodiment 1 of the present invention, since the pressure loss of the air flow path is not increased, noise is reduced while suppressing deterioration of power efficiency. Can do. Furthermore, since the areas of the lower suction port 13 and the upper suction port 12 are constant in the axial direction, noise can be reduced without causing deterioration of power efficiency due to the reduction of the suction area.

図３は、この発明の実施の形態１による空気調和装置の室内機における前面パネルの他の例を背面側から見た斜視図である。
図３（ａ）に示す前面パネル８においては、リブ１０は、平面が軸方向に対して傾斜して配置されている。また、図３（ｂ）に示す前面パネル８においては、リブ１０は、軸方向の中央で高さ方向位置が最も低くなるようにＶ字状に配置されている。さらに、図３（ｃ）に示す前面パネル８においては、リブ１０は、軸方向の中央で高さ方向位置が最も高くなるように逆Ｖ字状に配置されている。リブ１０は、羽根車２の前面で合流した流速の速い流速が羽根車２に流入する周方向位置を軸方向に変化させ得る形状であれば良いので、リブ１０の形状は、これらに限定されるものではない。 FIG. 3 is a perspective view of another example of the front panel in the indoor unit of the air-conditioning apparatus according to Embodiment 1 of the present invention, viewed from the back side.
In the front panel 8 shown in FIG. 3A, the rib 10 is arranged such that the plane is inclined with respect to the axial direction. Further, in the front panel 8 shown in FIG. 3B, the rib 10 is arranged in a V shape so that the height direction position is the lowest at the center in the axial direction. Furthermore, in the front panel 8 shown in FIG. 3C, the rib 10 is arranged in an inverted V shape so that the height direction position is the highest at the center in the axial direction. The rib 10 may have any shape that can change the position in the circumferential direction in which the high-speed flow velocity merged at the front surface of the impeller 2 flows into the impeller 2 in the axial direction. Therefore, the shape of the rib 10 is limited to these. It is not something.

本実施の形態１による空気調和装置の室内機１における騒音低減効果を試験によって確認したので、以下に説明する。図４は、この発明の実施の形態１による空気調和装置と従来のリブを設置していない空気調和装置の騒音の周波数特性を示す図であり、騒音の測定位置は室内機の中央表面から１ｍ、下方に０．８ｍ離れた位置である。図４（ａ）は、従来のリブを設置していない空気調和装置の騒音の周波数特性であり、図４（ｂ）は、この発明の実施の形態１による空気調和装置の騒音の周波数特性である。   Since the noise reduction effect in the indoor unit 1 of the air-conditioning apparatus according to Embodiment 1 has been confirmed by a test, it will be described below. FIG. 4 is a diagram showing the frequency characteristics of noise in the air conditioner according to Embodiment 1 of the present invention and the conventional air conditioner without ribs, and the noise measurement position is 1 m from the center surface of the indoor unit. The position is 0.8 m away downward. FIG. 4 (a) shows the frequency characteristics of noise of an air conditioner without conventional ribs, and FIG. 4 (b) shows the frequency characteristics of noise of the air conditioner according to Embodiment 1 of the present invention. is there.

図４に示されるように、リブ１０を設置していない従来の空気調和装置の騒音は、羽根車２の回転数Ｎとクロスフ羽根車２の羽根の枚数Ｚとの積ＮＺに相当する周波数において、強いピークを持つ周波数特性となっている。これに対して、リブ１０を軸方向に湾曲させて取り付けた本発明の空気調和装置１の騒音の周波数特性は、ＮＺに相当する周波数において、強いピークが現れておらず、聴感的に不快な回転音が発生していない。なお、図３（ａ）、図３（ｂ）および図３（ｃ）に示した形状のリブ１０を有する空気調和装置においても、同様の効果が得られることを確認した。   As shown in FIG. 4, the noise of the conventional air conditioner in which the rib 10 is not installed is at a frequency corresponding to the product NZ of the rotational speed N of the impeller 2 and the number of blades Z of the crossfoil impeller 2. The frequency characteristics have a strong peak. On the other hand, the frequency characteristics of the noise of the air conditioner 1 of the present invention in which the ribs 10 are bent in the axial direction do not show a strong peak at a frequency corresponding to NZ, and are unpleasant audibly. There is no rotating sound. In addition, it confirmed that the same effect was acquired also in the air conditioning apparatus which has the rib 10 of the shape shown to Fig.3 (a), FIG.3 (b), and FIG.3 (c).

また、リブ１０の室内機１の奥行き方向の長さの影響を試験によって確認したので、以下に説明する。図５は、この発明の実施の形態１による空気調和装置の室内機におけるリブの幅と卓越音圧レベルとの関係を示す図である。図５において、横軸は、前面パネル８とフィルター１６との間の風路の幅Ｈに対するリブ１０の奥行き方向長さｈの比であるリブ長さ比ｈ／Ｈであり、縦軸は、リブ１０がない場合のＮＺに相当する周波数における音圧レベル（卓越音圧レベル）を１として、正規化した卓越音圧レベルである。   Further, the influence of the length of the rib 10 in the depth direction of the indoor unit 1 was confirmed by a test, and will be described below. FIG. 5 is a diagram showing the relationship between the rib width and the prevailing sound pressure level in the indoor unit of the air-conditioning apparatus according to Embodiment 1 of the present invention. In FIG. 5, the horizontal axis is a rib length ratio h / H, which is the ratio of the length h in the depth direction of the rib 10 to the width H of the air path between the front panel 8 and the filter 16, and the vertical axis is The sound pressure level at the frequency corresponding to NZ when the rib 10 is not present (the sound pressure level) is 1, and the sound pressure level is normalized.

図５に示されるように、リブ長さ比ｈ／Ｈを０．５５以上とすることによって、卓越音圧レベルをおよそ半減させることができる。したがって、回転音の低減効果を得るためにはリブ長さ比ｈ／Ｈを０．５５以上とすることが望ましい。   As shown in FIG. 5, by setting the rib length ratio h / H to 0.55 or more, the prevailing sound pressure level can be approximately halved. Therefore, in order to obtain a rotating sound reduction effect, the rib length ratio h / H is desirably 0.55 or more.

なお、リブ１０の高さ方向の位置は、軸方向に全て同じ高さになっていなければよく、図２に示すように、軸方向に同じ高さの位置があってもよい。したがって、リブ１０は、図２および図３に示す以外にもＶ字状、逆Ｖ字状、波状を周期的に繰り返す形状でもよい。また、リブ１０は前面パネル８と一体に成型してもよいし、別体として成型した後に取り付けてもよい。   In addition, the position of the height direction of the rib 10 should just be not the same height in the axial direction, and as shown in FIG. 2, the position of the same height may exist in an axial direction. Therefore, the rib 10 may have a shape that periodically repeats a V shape, an inverted V shape, and a wave shape other than those shown in FIGS. 2 and 3. Further, the rib 10 may be molded integrally with the front panel 8 or may be attached after being molded as a separate body.

実施の形態２．
図６は、この発明の実施の形態２による空気調和装置の室内機における羽根車の軸方向に垂直な面での断面図である。
図６に示すように、この発明の実施の形態２による空気調和装置の室内機１のリブ１０は、前面パネル８と結合される根元部分が円弧状に形成されている。その他の構成および機能は、実施の形態１による空気調和装置の室内機１と同様であり、リブ１０は室内機１の高さ方向（図６の点線矢印方向）の位置が軸方向に異なるように延在する。 Embodiment 2. FIG.
FIG. 6 is a cross-sectional view taken along a plane perpendicular to the axial direction of the impeller in the indoor unit of the air-conditioning apparatus according to Embodiment 2 of the present invention.
As shown in FIG. 6, the rib 10 of the indoor unit 1 of the air-conditioning apparatus according to Embodiment 2 of the present invention has a root portion coupled to the front panel 8 formed in an arc shape. Other configurations and functions are the same as those of the indoor unit 1 of the air-conditioning apparatus according to Embodiment 1, and the rib 10 is arranged such that the position of the indoor unit 1 in the height direction (the direction of the dotted arrow in FIG. 6) differs in the axial direction. Extend to.

リブ１０の前面パネル８と結合される根元部分を円弧状に形成することによって、上吸込口１２から流入した気流および下吸込口９から流入した気流が羽根車２方向にスムーズ曲がり、圧力損失が低下する。また、リブ１０の前面パネル８と結合される根元部分を円弧状に形成し、根元部分が先端部分に比べて太くなっているので、強度も向上する。   By forming the base portion of the rib 10 connected to the front panel 8 in an arc shape, the airflow flowing in from the upper suction port 12 and the airflow flowing in from the lower suction port 9 are smoothly bent in the direction of the impeller 2 and pressure loss is reduced. descend. Moreover, since the root part couple | bonded with the front panel 8 of the rib 10 is formed in circular arc shape, and a root part is thick compared with the front-end | tip part, intensity | strength improves.

実施の形態３．
図７は、この発明の実施の形態３による空気調和装置の室内機における羽根車の軸方向に垂直な面での断面図である。
実施の形態１および実施の形態２による空気調和装置の室内機１では、リブ１０を前面パネル８に取り付けたが、図７に示すようにリブ１０をフィルター１６または支持パネル１５取り付けてもよい。実施の形態３による空気調和装置の室内機１においては、その他の構成および機能は実施の形態１または実施の形態２による空気調和装置の室内機１と同様であり、リブ１０は室内機１の高さ方向（図７の点線矢印方向）の位置が軸方向に異なるように延在する。 Embodiment 3 FIG.
FIG. 7 is a cross-sectional view taken along a plane perpendicular to the axial direction of the impeller in the indoor unit of the air-conditioning apparatus according to Embodiment 3 of the present invention.
In the indoor unit 1 of the air conditioner according to Embodiment 1 and Embodiment 2, the rib 10 is attached to the front panel 8, but the rib 10 may be attached to the filter 16 or the support panel 15 as shown in FIG. In the indoor unit 1 of the air conditioning apparatus according to the third embodiment, the other configurations and functions are the same as those of the indoor unit 1 of the air conditioning apparatus according to the first or second embodiment, and the rib 10 is the same as that of the indoor unit 1. It extends so that the position in the height direction (the direction of the dotted arrow in FIG. 7) is different in the axial direction.

図１のようにリブ１０を前面パネル８の背面に設置する構成において、前面パネル８を樹脂によって成形する場合には、前面パネル８の表面にひけが生じて意匠性が低下するおそれがある。この実施の形態３に示すように、リブ１０をフィルター１６または支持パネル１５に取り付けた場合には、前面パネル８の表面にひけが生じないので、意匠性が低下することがないという効果を得ることができる。   In the configuration in which the ribs 10 are installed on the back surface of the front panel 8 as shown in FIG. 1, when the front panel 8 is molded with resin, sink marks may occur on the surface of the front panel 8 and the design may be deteriorated. As shown in the third embodiment, when the rib 10 is attached to the filter 16 or the support panel 15, there is no sink on the surface of the front panel 8, so that an effect that the designability does not deteriorate is obtained. be able to.

１ 室内機、２ 羽根車、３ ケーシング、４ スタビライザー、５ クロスフローファン、６ 支持板、７ 羽根、８ 前面パネル、９ 下吸込口、１０ リブ、１１ 上面パネル、１２ 上吸込口、１３，１４ 熱交換器、１５ 支持パネル、１６ 開口、１７ フィルター。   DESCRIPTION OF SYMBOLS 1 Indoor unit, 2 impeller, 3 casing, 4 stabilizer, 5 crossflow fan, 6 support plate, 7 blades, 8 front panel, 9 lower suction port, 10 rib, 11 upper surface panel, 12 upper suction port, 13, 14 Heat exchanger, 15 support panels, 16 openings, 17 filters.

Claims (7)

軸を中心に回転し周方向に複数の羽根を有する羽根車と、前記羽根車の上流側に設けられた熱交換器とを備えた空気調和装置の室内機であって、
空気を吸い込む上吸込口を有し前記室内機の上面に設けられた上面パネルと、
空気を吸い込む下吸込口を下端部に有し前記室内機の前面に設けられた前面パネルと、
前記上面パネルおよび前記前面パネルと前記熱交換器との間に設けられた支持パネルとを備え、
高さ方向の位置が前記羽根車の軸方向に異なるよう延在するリブを前記前面パネルと前記支持パネルとの間に設けたことを特徴とする空気調和装置の室内機。 An air conditioner indoor unit comprising an impeller that rotates around an axis and has a plurality of blades in the circumferential direction, and a heat exchanger provided on the upstream side of the impeller,
An upper panel provided on the upper surface of the indoor unit having an upper suction port for sucking air;
A front panel provided at the front of the indoor unit having a lower suction port for sucking air at the lower end,
A support panel provided between the top panel and the front panel and the heat exchanger;
An indoor unit of an air conditioner, wherein a rib extending so that a position in a height direction differs in an axial direction of the impeller is provided between the front panel and the support panel. 前記リブは、前記前面パネルに設けられていることを特徴とする請求項１に記載の空気調和装置の室内機。   The indoor unit of an air conditioner according to claim 1, wherein the rib is provided on the front panel. 前記リブは、前記支持パネルと前記前面パネルとの間に設けられたフィルタまたは前記支持パネルに設けられていることを特徴とする請求項１に記載の空気調和装置の室内機。   The indoor unit of an air conditioner according to claim 1, wherein the rib is provided on a filter provided between the support panel and the front panel or on the support panel. 前記リブは、前記軸方向に湾曲していることを特徴とする請求項１から３のいずれか１項に記載の空気調和装置の室内機。   The indoor unit of an air conditioner according to any one of claims 1 to 3, wherein the rib is curved in the axial direction. 前記リブは、前記軸方向に対して傾斜して配置されていることを特徴とする請求項１から３のいずれか１項に記載の空気調和装置の室内機。   The indoor unit of an air conditioner according to any one of claims 1 to 3, wherein the rib is disposed to be inclined with respect to the axial direction. 前記リブは、Ｖ字状であることを特徴とする請求項１から３のいずれか１項に記載の空気調和装置の室内機。   The indoor unit of an air conditioning apparatus according to any one of claims 1 to 3, wherein the rib is V-shaped. 前記リブは、前記羽根車の軸方向に垂直な断面で根元部分が円弧状に形成されていることを特徴とする請求項１から６のいずれか１項に記載の空気調和装置の室内機。   The indoor unit of an air conditioner according to any one of claims 1 to 6, wherein the rib has a base portion formed in an arc shape in a cross section perpendicular to the axial direction of the impeller.
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JPWO2017022133A1 (en) * 2015-08-06 2018-02-22 三菱電機株式会社 Air conditioner indoor unit
WO2022209651A1 (en) * 2021-03-30 2022-10-06 株式会社富士通ゼネラル Air-conditioning device

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KR20200119595A (en) 2019-04-10 2020-10-20 삼성전자주식회사 Air conditioner

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JP2008002779A (en) * 2006-06-26 2008-01-10 Matsushita Electric Ind Co Ltd Air conditioner

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JP2008002779A (en) * 2006-06-26 2008-01-10 Matsushita Electric Ind Co Ltd Air conditioner

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Publication number Priority date Publication date Assignee Title
JPWO2017022133A1 (en) * 2015-08-06 2018-02-22 三菱電機株式会社 Air conditioner indoor unit
WO2022209651A1 (en) * 2021-03-30 2022-10-06 株式会社富士通ゼネラル Air-conditioning device
JP2022155372A (en) * 2021-03-30 2022-10-13 株式会社富士通ゼネラル air conditioner
JP7298641B2 (en) 2021-03-30 2023-06-27 株式会社富士通ゼネラル air conditioner

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