JP2013204912A - Indoor unit - Google Patents

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JP2013204912A
JP2013204912A JP2012074350A JP2012074350A JP2013204912A JP 2013204912 A JP2013204912 A JP 2013204912A JP 2012074350 A JP2012074350 A JP 2012074350A JP 2012074350 A JP2012074350 A JP 2012074350A JP 2013204912 A JP2013204912 A JP 2013204912A
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air
air guide
heat exchanger
outlet
guide
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JP5724924B2 (en
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Zenji Michitsuji
善治 道辻
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Daikin Industries Ltd
ダイキン工業株式会社
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Abstract

PROBLEM TO BE SOLVED: To provide an indoor unit capable of reducing pressure loss of an air current blown out of an air outlet and occurrence of separation.SOLUTION: There is provided an indoor unit that includes a heat exchanger (20), a blower (24), a casing having an air outlet (10a) on a side, and an air guide member (30) which guides an air current having passed through the heat exchanger (20) to the air outlet (10a). The air guide member (30) has a first air guide portion (31), a second air guide portion (32), and a third air guide portion (33) from the side of the heat exchanger (20) to the side of the air outlet (10a) in this order. The first air guide portion (31) has a curved shape which extends downward from the side of the heat exchanger toward the air outlet and is convex to outside a casing, the second air guide member (32) extends linearly from an end of the first air guide portion (31), and the third air guide portion (33) has a curved shape which is convex to the interior of the casing, the curvature of the first air guide portion (31) being larger than the curvature of the third air guide portion (33).

Description

本発明は、空気調和装置における室内機に関し、特に、天井吊下型の室内機に関するものである。   The present invention relates to an indoor unit in an air conditioner, and more particularly to a ceiling-suspended indoor unit.

従来、空気調和装置における天井埋込型の室内機として、例えば下記特許文献1に示すものが知られている。この特許文献1に記載の室内機は、ケーシングの下面中央部から室内の空気を吸い込み、その空気を熱交換器で熱交換させた後、ケーシング側方に設けられた四つの吹出口から風を吹き出すものである。この室内機は、前記熱交換器と、室内の空気を取り込んで前記熱交換器に向けて風を送る送風機と、前記熱交換器及び前記送風機を収容するとともに側方に吹出口を有するケーシングと、前記送風機により生ずる気流のうち前記熱交換器を通過したものを前記吹出口へ導く導風部材とを備える。   Conventionally, as an indoor unit embedded in a ceiling in an air conditioner, for example, the one shown in Patent Document 1 below is known. The indoor unit described in Patent Document 1 sucks indoor air from the center of the lower surface of the casing, heat-exchanges the air with a heat exchanger, and then blows air from four outlets provided on the side of the casing. It blows out. The indoor unit includes the heat exchanger, a blower that takes in indoor air and sends wind toward the heat exchanger, a casing that houses the heat exchanger and the blower, and has a blower outlet on a side. And an air guide member for guiding the air flow generated by the blower that has passed through the heat exchanger to the outlet.

この特許文献1に記載の導風部材近傍を拡大したものを、図4に示す。この図4に示すように、前記導風部材130は、その内面に前記熱交換器120側から前記吹出口100a側の端部にかけて、第一導風部131と第二導風部132とをこの順に有する。前記第一導風部131は、前記ケーシングの外側に向かって凸となった湾曲形状を有し、前記第二導風部132は、前記第一導風部131の端部から前記吹出口100a側の端部に向かって水平方向に直線状に延びる形状を有する。前記第一導風部131は、前記送風機により生ずる気流のうち前記熱交換器120を通過したものを前記吹出口100aに向けてスムーズに導くために上記のように湾曲した形状とされている。   FIG. 4 shows an enlarged view of the vicinity of the air guide member described in Patent Document 1. As shown in FIG. 4, the air guide member 130 has a first air guide portion 131 and a second air guide portion 132 formed on the inner surface from the heat exchanger 120 side to the end on the air outlet 100 a side. In this order. The first air guide portion 131 has a curved shape that protrudes toward the outside of the casing, and the second air guide portion 132 extends from the end of the first air guide portion 131 to the outlet 100a. It has a shape extending linearly in the horizontal direction toward the end on the side. The first air guide portion 131 has a curved shape as described above in order to smoothly guide the airflow generated by the blower that has passed through the heat exchanger 120 toward the air outlet 100a.

特開平10−103702号公報JP-A-10-103702

上記特許文献1に記載される導風部材130は、前記ケーシングの外側に向かって凸となった湾曲形状の前記第一導風部131の端部から、前記第二導風部132が水平方向に直線状に延びるように接続された形状を有するため、前記送風機の駆動により生ずる気流は、両導風部の境界から当該導風部材130の吹出口100a側の端部近傍においてその圧力勾配が大きくなる。これにより、前記吹出口100a側の端部近傍で気流の圧力損失及び剥離が発生するため、室内への気流の到達度が低下する。   In the air guide member 130 described in Patent Document 1, the second air guide part 132 is horizontally oriented from the end of the curved first air guide part 131 that is convex toward the outside of the casing. The air flow generated by driving the blower has a pressure gradient in the vicinity of the end of the air guide member 130 on the air outlet 100a side from the boundary between the air guide parts. growing. Thereby, pressure loss and separation of the airflow occur in the vicinity of the end on the air outlet 100a side, so that the degree of arrival of the airflow into the room is reduced.

本発明は、上記のような課題を解決するためになされたものであり、吹出口から吹き出す気流の圧力損失及び剥離の発生を低減することが可能な室内機を提供することを目的とする。   The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an indoor unit capable of reducing the pressure loss and separation of the airflow blown from the outlet.

前記課題を解決するため、前記導風部材における前記吹出口側近傍の部位を前記ケーシングの内側に向かって凸となった湾曲形状とすることが考えられる。具体的には、前記第二導風部を前記ケーシングの内側に向かって凸となった湾曲形状とした上で、両導風部を滑らかに接続することが考えられる。このようにすれば、前記導風部材の前記吹出口側の端部近傍での前記気流の圧力損失及び剥離の発生が低減される。   In order to solve the above problem, it is conceivable that a portion of the air guide member in the vicinity of the air outlet side has a curved shape that is convex toward the inside of the casing. Specifically, it is conceivable to connect the two air guide portions smoothly after the second air guide portion has a curved shape that is convex toward the inside of the casing. If it does in this way, generation | occurrence | production of the pressure loss and peeling of the said airflow in the end part vicinity of the said blower outlet side of the said baffle member will be reduced.

ここで、前記気流の圧力損失及び剥離の発生の低減効果をより大きくするため、前記第二導風部の曲率はできるだけ小さく、かつ、その水平方向の寸法はできるだけ長く設定されることが好ましい。そして、前記吹出口の上下方向の寸法は、当該吹出口から吹き出す気流の流速を確保するために大きくされないことが好ましい。しかしながら、このような要求を満足するように前記第一導風部と第二導風部とを形成すれば、前記導風部材の水平方向の寸法が著しく大きくなる。   Here, in order to further increase the effect of reducing the pressure loss of the airflow and the occurrence of separation, it is preferable that the curvature of the second air guide portion is set as small as possible and the horizontal dimension thereof is set as long as possible. And it is preferable not to enlarge the dimension of the up-down direction of the said blower outlet, in order to ensure the flow velocity of the airflow which blows off from the said blower outlet. However, if the first air guide portion and the second air guide portion are formed so as to satisfy such a requirement, the horizontal dimension of the air guide member is remarkably increased.

そこで、本発明は、その内部を冷媒が流れる熱交換器と、室内の空気を取り込んで前記熱交換器に向けて風を送る送風機と、前記熱交換器及び前記送風機を収容するとともに側方に吹出口を有するケーシングと、このケーシングの内面上側に設けられており、前記送風機の駆動により生ずる気流のうち前記熱交換器を通過したものを前記吹出口へ導く導風部材とを備える室内機であって、前記導風部材は、その内面に前記熱交換器側から前記吹出口側の端部に向けて第一導風部、第二導風部及び第三導風部をこの順に有し、前記第一導風部は、前記熱交換器側から前記吹出口に向かうにつれて下方に向かうとともに前記ケーシングの外側に向けて凸となった湾曲形状を有し、前記第二導風部は、前記第一導風部の端部から直線状に延びる形状を有し、前記第三導風部は、前記ケーシングの内側に向けて凸となった湾曲形状を有し、前記第一導風部の曲率は、前記第三導風部の曲率よりも大きく形成された室内機を提供する。   Therefore, the present invention includes a heat exchanger through which a refrigerant flows, a blower that takes in indoor air and sends wind toward the heat exchanger, and accommodates the heat exchanger and the blower and laterally. An indoor unit provided with a casing having an air outlet and an air guide member that is provided on the upper surface of the inner surface of the casing and guides an air flow generated by driving the blower through the heat exchanger to the air outlet. And the said wind guide member has a 1st wind guide part, a 2nd wind guide part, and a 3rd wind guide part in this order toward the edge part on the said blower outlet side from the said heat exchanger side. The first air guide portion has a curved shape that protrudes downward from the heat exchanger side toward the air outlet and is convex toward the outside of the casing, and the second air guide portion is A shape extending linearly from the end of the first air guide portion And the third air guide portion has a curved shape that is convex toward the inside of the casing, and the curvature of the first air guide portion is larger than the curvature of the third air guide portion. Provided indoor units.

この発明の室内機によれば、前記吹出口から吹き出す気流の圧力損失及び剥離の発生を低減し、かつ、前記吹出口の上下方向の寸法を大きくすることなく全体の水平方向の寸法を短縮することが可能となる。すなわち、前記第三導風部が前記ケーシングの内側に向けて凸となった湾曲形状を有するので、前記吹出口近傍での気流の圧力勾配が小さくなり、これにより当該吹出口近傍での気流の圧力損失及び剥離の発生が抑制される。よって、室内への気流の到達度の低下が抑制される。   According to the indoor unit of the present invention, the pressure loss of the airflow blown out from the air outlet and the occurrence of separation are reduced, and the overall horizontal dimension is shortened without increasing the vertical dimension of the air outlet. It becomes possible. That is, since the third air guide portion has a curved shape that is convex toward the inside of the casing, the pressure gradient of the airflow in the vicinity of the air outlet is reduced, and thereby the airflow in the vicinity of the air outlet is reduced. Generation of pressure loss and peeling is suppressed. Therefore, a decrease in the degree of airflow reaching the room is suppressed.

また、前記第一導風部は、前記熱交換器側から前記吹出口に向かうにつれて下方に向かう湾曲形状を有するとともに、その曲率が前記第三導風部のそれよりも大きく形成されており、かつ、この第一導風部の端部には直線状に延びる形状の第二導風部がつながるので、これら第一導風部及び第二導風部の水平方向の寸法が大きくなることを効果的に抑制しつつその上下方向の寸法を十分に確保することができる。これにより、前記第三導風部の水平方向の寸法を大きくすることができるので、前記吹出口の上下方向の寸法、及び導風部材全体の水平方向の寸法が大きくなることを回避しながら前記吹出口近傍での前記気流の圧力勾配を小さくすことができる。したがって、前記吹出口近傍での気流の圧力損失及び剥離の発生が抑制され、室内への気流の到達度が増大する。   Further, the first air guide part has a curved shape that goes downward as it goes from the heat exchanger side to the air outlet, and its curvature is formed larger than that of the third air guide part, In addition, since the second air guide portion having a linearly extending shape is connected to the end portion of the first air guide portion, the horizontal dimension of the first air guide portion and the second air guide portion is increased. The size in the vertical direction can be sufficiently secured while being effectively suppressed. Thereby, since the horizontal dimension of the third air guide portion can be increased, the vertical dimension of the air outlet and the horizontal dimension of the entire air guide member are avoided while increasing. The pressure gradient of the airflow in the vicinity of the outlet can be reduced. Therefore, the pressure loss and separation of the airflow in the vicinity of the air outlet are suppressed, and the reach of the airflow into the room is increased.

加えて、前記ケーシングの外側に向けて凸となった湾曲形状を有する前記第一導風部と、前記ケーシングの内側に向けて凸となった湾曲形状を有する前記第三導風部とが直接接続された場合、これらの導風部の境界で渦が発生する場合があるが、本発明の導風部材は、前記第一導風部と前記第三導風部との間に直線状に延びる形状の第二導風部を有するので、当該渦の発生が抑制される。   In addition, the first air guide portion having a curved shape that is convex toward the outside of the casing and the third air guide portion having a curved shape that is convex toward the inside of the casing are directly provided. When connected, vortices may occur at the boundary between these air guide portions, but the air guide member of the present invention is linear between the first air guide portion and the third air guide portion. Since it has the extended 2nd wind guide part, generation | occurrence | production of the said vortex is suppressed.

この場合において、前記第一導風部は、前記熱交換器の外端部から前記吹出口に向かうにつれて下方に向かう形状を有することが好ましい。   In this case, it is preferable that the first air guide portion has a shape that goes downward from the outer end portion of the heat exchanger toward the air outlet.

このようにすれば、前記熱交換器の外端部から前記導風部材が下方に湾曲し始めるので、この導風部材の上下方向の寸法の確保に必要な当該導風部材の水平方向の寸法が短縮される。つまり、前記熱交換器から前記吹出口までの水平方向の寸法がさらに短縮されるので、当該室外機が一層小型化される。   If it does in this way, since the said air guide member begins to curve below from the outer end part of the said heat exchanger, the dimension of the horizontal direction of the said air guide member required for ensuring the vertical dimension of this air guide member Is shortened. That is, since the horizontal dimension from the heat exchanger to the outlet is further shortened, the outdoor unit is further downsized.

また、本発明において、前記ケーシングには、前記吹出口から吹き出す風の向きを変更するための風向板が取り付けられており、前記導風部材は、前記送風機の駆動時に最も下方を向いた姿勢にある前記風向板と当該導風部材との間の距離を最小とする絞り部を有し、この絞り部が当該導風部材の前記吹出口側の端部よりも内側に形成されていることが好ましい。   In the present invention, the casing is provided with a wind direction plate for changing the direction of the wind blown from the blower outlet, and the wind guide member is in a posture facing most downward when the blower is driven. A throttle portion that minimizes a distance between the wind direction plate and the air guide member, and the throttle portion is formed on an inner side than an end portion of the air guide member on the outlet side. preferable.

このようにすれば、前記絞り部よりも外側の位置での前記導風部材と前記風向板との間の距離が前記絞り部と前記風向板との間の距離よりも大きくなるので、前記導風部材と前記風向板との間の距離が前記吹出口で最小とされる場合に比べ、前記吹出口近傍での気流の圧力勾配を小さくすることができる。その結果、前記気流の圧力損失が低減される。   In this case, the distance between the wind guide member and the wind direction plate at a position outside the throttle unit is larger than the distance between the throttle unit and the wind direction plate. Compared with the case where the distance between the wind member and the wind direction plate is minimized at the air outlet, the pressure gradient of the airflow in the vicinity of the air outlet can be reduced. As a result, the pressure loss of the airflow is reduced.

以上のように、本発明によれば、吹出口の上下方向の寸法、及び導風部材全体の水平方向の寸法が大きくなることを回避しながら、吹出口から吹き出す気流の圧力損失及び剥離の発生を低減することが可能な室内機を提供することができる。   As described above, according to the present invention, the occurrence of pressure loss and separation of the airflow blown out from the air outlet while avoiding an increase in the vertical dimension of the air outlet and the horizontal dimension of the entire air guide member. It is possible to provide an indoor unit capable of reducing the above.

本発明の一実施形態の室内機の斜視図である。It is a perspective view of the indoor unit of one embodiment of the present invention. 図1に示す室内機の断面図である。It is sectional drawing of the indoor unit shown in FIG. 図2に示す導風部材の近傍を拡大した図である。It is the figure which expanded the vicinity of the wind guide member shown in FIG. 特許文献1に記載される従来の室内機の導風部材の近傍を拡大した図である。It is the figure which expanded the vicinity of the wind guide member of the conventional indoor unit described in patent document 1. FIG.

本発明の一実施形態の室内機について、図1〜図3を参照しながら説明する。また、以下の説明では、天井と床とを結ぶ方向、すなわち、室内機の厚み方向を上下方向とする。   An indoor unit according to an embodiment of the present invention will be described with reference to FIGS. In the following description, the direction connecting the ceiling and the floor, that is, the thickness direction of the indoor unit is defined as the vertical direction.

図1及び図2に示すように、本実施形態における室内機は、天井から吊下げる形式、すなわち、天井吊下型の室内機である。この室内機は、ケーシングを備え、このケーシング内に、熱交換器20と、送風機24と、導風部材30とを備える。さらに、この室内機は、ケーシング内に、熱交換器20を支持するドレンパン22、このドレンパン22に溜まった水を吸い上げて室内機外へ排出するドレンポンプ(図示せず)、室内から取り込まれる空気Wを送風機24に導くベルマウス25、室内の人の居場所を検知する人検知センサ26、各種制御を行う電子部品が搭載された電装ユニット27、室内から取り込む空気中の塵埃を捕捉するエアフィルター28等を備える。また、このケーシングには、風向板13が取り付けられる。   As shown in FIG.1 and FIG.2, the indoor unit in this embodiment is a type suspended from a ceiling, ie, a ceiling suspended type indoor unit. This indoor unit includes a casing, and includes a heat exchanger 20, a blower 24, and an air guide member 30 in the casing. Further, the indoor unit includes a drain pan 22 that supports the heat exchanger 20 in a casing, a drain pump (not shown) that sucks up the water accumulated in the drain pan 22 and discharges it to the outside of the indoor unit, and air taken in from the room. A bell mouth 25 that guides W to the blower 24, a human detection sensor 26 that detects the location of a person in the room, an electrical unit 27 that is equipped with electronic components that perform various controls, and an air filter 28 that captures dust in the air taken from the room Etc. A wind direction plate 13 is attached to the casing.

ケーシングは、略矩形状を呈し、天井から吊下げられる。このケーシングは、略矩形状の化粧枠10と、化粧枠10の四隅に取り付けられるコーナーカバー11と、化粧枠10の上部に取り付けられる天板12と、化粧枠10の下部に取り付けられる化粧板14と有する。化粧枠10は、その各辺のそれぞれに、室内に向けて風を吹き出すための吹出口10aを有する。各吹出口10aは、それぞれが各辺の長手方向に沿った方向に長い形状を有する。また各吹出口10aは、導風部材30の外端部の下面とドレンパン22の外端部の上面とによりその上下方向の寸法が規定される。コーナーカバー11は、略L字状であり、化粧枠10の四隅を覆うように当該化粧枠10に取り付けられる。天板12は、後述の導風部材30の外側面を覆うように化粧枠10の上部に取り付けられる。化粧板14は、化粧枠10の下部に設けられた開口を覆う形状を有し、その中央に吸込グリル14aを有する。吸込グリル14aは、室内からの空気Wを吸い込む部分である。またこの化粧板14は、その一端側(図1における右側)の辺が化粧枠10に軸支されており、この部分を回動軸として、他端側(図1における左側)の辺が室内側に変位するように回動しながら開くことができる。   The casing has a substantially rectangular shape and is suspended from the ceiling. The casing includes a substantially rectangular decorative frame 10, corner covers 11 attached to the four corners of the decorative frame 10, a top plate 12 attached to the upper portion of the decorative frame 10, and a decorative plate 14 attached to the lower portion of the decorative frame 10. And have. The decorative frame 10 has an air outlet 10a for blowing air toward the room on each side. Each blower outlet 10a has a long shape in the direction along the longitudinal direction of each side. Each blower outlet 10 a has a vertical dimension defined by the lower surface of the outer end portion of the air guide member 30 and the upper surface of the outer end portion of the drain pan 22. The corner cover 11 is substantially L-shaped and is attached to the decorative frame 10 so as to cover the four corners of the decorative frame 10. The top plate 12 is attached to the upper part of the decorative frame 10 so as to cover the outer surface of the air guide member 30 described later. The decorative plate 14 has a shape that covers an opening provided in the lower portion of the decorative frame 10, and has a suction grill 14a at the center thereof. The suction grill 14a is a part that sucks in air W from the room. Further, the decorative plate 14 has a side on one end side (right side in FIG. 1) pivotally supported by the decorative frame 10, and a side on the other end side (left side in FIG. 1) with this portion as a rotation shaft. It can be opened while rotating to be displaced inward.

風向板13は、吹出口10aから吹き出す風の向きを調整するためのものであり、吹出口10aごと設けられる。各風向板13は、一方向に長い形状を有し、その長手方向が吹出口10aの長手方向と一致するようにケーシングに取り付けられる。この風向板13は、その長手方向の両端に回動軸を有し、この回動軸を中心として当該風向板13の外端部が上下方向に変位する。図3は、風向板13が、送風機24の駆動時に最も下方を向いた姿勢となった状態を示す。なお、この風向板13は、送風機24の停止時には、その外端部の内面が化粧枠10の外側面に沿うような姿勢となる。   The wind direction board 13 is for adjusting the direction of the wind which blows off from the blower outlet 10a, and is provided with the blower outlet 10a. Each wind direction plate 13 has a shape that is long in one direction, and is attached to the casing so that its longitudinal direction coincides with the longitudinal direction of the air outlet 10a. The wind direction plate 13 has a rotation shaft at both ends in the longitudinal direction, and the outer end portion of the wind direction plate 13 is displaced in the vertical direction around the rotation shaft. FIG. 3 shows a state in which the wind direction plate 13 is in the most downward posture when the blower 24 is driven. Note that the wind direction plate 13 is in such a posture that the inner surface of the outer end portion is along the outer surface of the decorative frame 10 when the blower 24 is stopped.

熱交換器20は、その内部を冷媒が流れており、室内から取り込まれた空気Wと熱交換するものである。この熱交換器20は、送風機24を取り囲む形状を有する。具体的には、この熱交換器20は、化粧枠10の外形に沿うとともに、その両端が同一の角部で対向する形状を有する。   The heat exchanger 20 has a refrigerant flowing therein, and exchanges heat with the air W taken in from the room. The heat exchanger 20 has a shape surrounding the blower 24. Specifically, the heat exchanger 20 has a shape that conforms to the outer shape of the decorative frame 10 and that both ends thereof are opposed at the same corner.

送風機24は、ケーシングの略中央に収容されており、室内から空気Wを取り込み、熱交換器20に向けて風を送るものである。具体的には、この送風機24は、吸込グリル14aを通じて室内から取り込まれた空気Wが、熱交換器20を経由して各吹出口10aから室内に吹き出されるような気流を発生させる。この送風機24は、前記気流を発生させる形状の羽根車24aと、この羽根車24aを回転駆動させるモータ24bとを有する。本実施形態では、このような送風機24として、遠心送風機(ターボファン)、すなわち、下方から取り込んだ空気Wを側方へ送り出すことが可能なファンを用いている。なお、送風機24としては、遠心送風機に限らず、例えば、斜流送風機等を用いることができる。   The blower 24 is accommodated in the approximate center of the casing, takes in the air W from the room, and sends the wind toward the heat exchanger 20. Specifically, the blower 24 generates an air current such that the air W taken in from the room through the suction grille 14a is blown out from each outlet 10a through the heat exchanger 20 into the room. The blower 24 includes an impeller 24a configured to generate the airflow, and a motor 24b that rotationally drives the impeller 24a. In the present embodiment, a centrifugal blower (turbo fan), that is, a fan capable of sending out the air W taken from below to the side is used as such a blower 24. In addition, as the air blower 24, not only a centrifugal air blower but a mixed flow air blower etc. can be used, for example.

ベルマウス25は、室内から取り込まれる空気Wを送風機24に導くものである。具体的に、このベルマウス25は、その中央に上下方向に解放する開口を有しており、この開口の径がケーシングの下面側から上面側に向かって次第に小さくなる形状を有する。   The bell mouth 25 guides the air W taken from the room to the blower 24. Specifically, the bell mouth 25 has an opening that opens in the vertical direction at the center thereof, and the diameter of the opening gradually decreases from the lower surface side to the upper surface side of the casing.

電装ユニット27は、各種制御を行う電子部品が実装されたプリント基板と、このプリント基板を収容するケースと、このケースに対し着脱自在に取り付けられる蓋とを有し、ベルマウス25の外側に取り付けられる。   The electrical unit 27 has a printed circuit board on which electronic components for performing various controls are mounted, a case that accommodates the printed circuit board, and a lid that is detachably attached to the case, and is attached to the outside of the bell mouth 25. It is done.

導風部材30は、送風機24の駆動により生ずる気流のうち熱交換器20の上部を通過したものを各吹出口10aへ導くものであり、前記ケーシングの内面上側に設けられる。本実施形態では、導風部材30は、断熱材からなる。図3に示すように、この導風部材30は、熱交換器20の上端部に対向する面が水平面に形成された水平部を有し、さらに、その内面に熱交換器20側から吹出口10a側の端部に向けて第一導風部31、第二導風部32及び第三導風部33をこの順に有する。これら水平部及び各導風部はそれぞれ滑らかに接続されている。また、この導風部材30は、絞り部30aを有する。   The air guide member 30 guides the airflow generated by driving the blower 24 that has passed through the upper part of the heat exchanger 20 to each air outlet 10a, and is provided on the upper inner surface of the casing. In this embodiment, the air guide member 30 is made of a heat insulating material. As shown in FIG. 3, the air guide member 30 has a horizontal portion in which a surface facing the upper end portion of the heat exchanger 20 is formed in a horizontal plane, and further, an air outlet is provided on the inner surface from the heat exchanger 20 side. It has the 1st wind guide part 31, the 2nd wind guide part 32, and the 3rd wind guide part 33 in this order toward the edge part by the side of 10a. These horizontal portions and each air guide portion are connected smoothly. Further, the air guide member 30 has a throttle portion 30a.

第一導風部31は、熱交換器20の上部を通過した気流を吹出口10a側へ、すなわち、下方へ導く部位である。この第一導風部31は、水平部につながっており、熱交換器20側から吹出口10aに向かうにつれて下方に向かうとともにケーシングの外側に向けて凸となった湾曲形状を有する。より具体的には、第一導風部31は、水平部に滑らかに接続され、かつ、水平部の外端部(熱交換器20の外端部と対向する部位)から水平方向に伸びる部位を有することなくそのまま吹出口10aに向かうにつれて下方に向かう形状を有する。この第一導風部31の曲率半径は、20mm〜60mmとされることが好ましい。本実施形態では、当該第一導風部31の曲率半径は35mmとしている。また、この第一導風部31の中心角は、当該第一導風部31の外端部における接線の水平方向となす角が45度〜70度となる角度に設定されることが好ましい。本実施形態では、この第一導風部31の中心角は、当該第一導風部31の外端部における接線の水平方向となす角が60度となる角度に設定している。   The first air guide portion 31 is a portion that guides the airflow that has passed through the upper portion of the heat exchanger 20 toward the outlet 10a, that is, downward. The first air guide portion 31 is connected to the horizontal portion, and has a curved shape that goes downward from the heat exchanger 20 side toward the outlet 10a and is convex toward the outside of the casing. More specifically, the first air guide portion 31 is smoothly connected to the horizontal portion and extends in the horizontal direction from the outer end of the horizontal portion (the portion facing the outer end of the heat exchanger 20). As it goes to the blower outlet 10a as it is, it has a shape that goes downward. The radius of curvature of the first air guide portion 31 is preferably 20 mm to 60 mm. In the present embodiment, the curvature radius of the first air guide portion 31 is set to 35 mm. In addition, the central angle of the first air guide portion 31 is preferably set to an angle between 45 degrees and 70 degrees with the horizontal direction of the tangent at the outer end of the first air guide portion 31. In the present embodiment, the central angle of the first air guide portion 31 is set to an angle at which the angle formed with the tangential horizontal direction at the outer end portion of the first air guide portion 31 is 60 degrees.

第二導風部32は、第一導風部31の端部から直線状に延びる形状を有する。この第二導風部32が水平方向に対してなす角は、本実施形態では60度である。   The second air guide portion 32 has a shape extending linearly from the end portion of the first air guide portion 31. In this embodiment, the angle formed by the second air guide portion 32 with respect to the horizontal direction is 60 degrees.

第三導風部33は、ケーシングの内側に向けて凸となった湾曲形状を有する。この第三導風部33の曲率半径は、60mm〜100mmとされることが好ましい。本実施形態では、当該第一導風部33の曲率半径は84.9mmとしている。また、この第三導風部33の中心角は、当該第三導風部33の外端部における接線と前記第一導風部31の外端部における接線とのなす角が5度〜30度となる角度に設定されることが好ましい。本実施形態では、この第三導風部33の中心角は、当該第三導風部33の外端部における接線と前記第一導風部31の外端部における接線とのなす角が20度となる角度に設定している。つまり、この第三導風部33の曲率は、第一導風部31の曲率よりも小さくなる(第一導風部31の曲率は、第三導風部33の曲率よりも大きくなる)ように設定される。   The third air guide portion 33 has a curved shape that is convex toward the inside of the casing. The radius of curvature of the third air guide portion 33 is preferably 60 mm to 100 mm. In the present embodiment, the radius of curvature of the first air guide portion 33 is 84.9 mm. The central angle of the third air guide portion 33 is such that the angle formed by the tangent line at the outer end portion of the third air guide portion 33 and the tangent line at the outer end portion of the first air guide portion 31 is 5 degrees to 30 degrees. It is preferable that the angle is set to a degree. In the present embodiment, the central angle of the third air guiding portion 33 is an angle formed by a tangent at the outer end of the third air guiding portion 33 and a tangent at the outer end of the first air guiding portion 31. The angle is set to a degree. That is, the curvature of the third air guiding portion 33 is smaller than the curvature of the first air guiding portion 31 (the curvature of the first air guiding portion 31 is larger than the curvature of the third air guiding portion 33). Set to

絞り部30aは、図3に示すように、送風機24の駆動時に最も下方を向いた姿勢となった風向板13と当該導風部材30との間の距離L0を最小とする部位である。つまり、この距離L0は、吹出口10aでの風向板13と導風部材30との間の距離L1よりも小さい。換言すれば、送風機24により生ずる気流の圧力は、絞り部30aと風向板13との間を通過するときに最も高くなり、そこから吹出口10aに向かうにつれて徐々に低下するように導風部材30と風向板13との位置及び形状が設定される。   As shown in FIG. 3, the throttle portion 30 a is a portion that minimizes the distance L <b> 0 between the wind direction plate 13 that is in the most downward orientation when the blower 24 is driven and the air guide member 30. That is, the distance L0 is smaller than the distance L1 between the wind direction plate 13 and the air guide member 30 at the air outlet 10a. In other words, the pressure of the airflow generated by the blower 24 is highest when passing between the throttle portion 30a and the wind direction plate 13, and then gradually decreases toward the blowout port 10a from there. And the wind direction plate 13 are set in position and shape.

次に、この室内機の駆動について説明する。   Next, driving of the indoor unit will be described.

まず、送風機24のモータ24bが駆動されてその羽根車24aが回転する。そうすると、この送風機24は、吸込グリル14aを通じて取り込んだ室内の空気Wが、熱交換器20へ向かう気流を発生させる。そして、その気流は熱交換器20を経由して各吹出口10aから室内へ向かう。このとき、導風部材30は、熱交換器20を通過した気流が各吹出口10aに向かうように導く。ここで、導風部材30の第三導風部33は、ケーシングの内側に向けて凸となった湾曲形状を有するので、吹出口10a近傍での気流の圧力勾配が小さくなり、これにより当該吹出口10a近傍での気流の圧力損失及び剥離の発生が抑制される。よって、室内への気流の到達度の低下が抑制される。   First, the motor 24b of the blower 24 is driven to rotate the impeller 24a. Then, in the blower 24, the indoor air W taken in through the suction grill 14a generates an air flow toward the heat exchanger 20. Then, the airflow passes through the heat exchanger 20 from each outlet 10a to the room. At this time, the air guide member 30 guides the airflow that has passed through the heat exchanger 20 toward each of the air outlets 10a. Here, since the third air guide portion 33 of the air guide member 30 has a curved shape that is convex toward the inside of the casing, the pressure gradient of the airflow in the vicinity of the air outlet 10a is reduced, and thus, The pressure loss and separation of the airflow in the vicinity of the outlet 10a are suppressed. Therefore, a decrease in the degree of airflow reaching the room is suppressed.

以上説明したように、本実施形態の導風部材30は、第一導風部31が、熱交換器20側から吹出口10aに向かうにつれて下方に向かう湾曲形状を有するとともに、その曲率が第三導風部33のそれよりも大きく形成され、かつ、その外端部の水平方向となす角が60度であり、さらに、この第一導風部31の外端部には直線状に延びる形状の第二導風部32がつながるので、これら第一導風部31及び第二導風部32の水平方向の寸法が大きくなることを効果的に抑制しつつその上下方向の寸法を十分に確保することができる。これにより、第三導風部33の水平方向の寸法を大きくすることができるので、吹出口10aの上下方向の寸法、及び導風部材30全体の水平方向の寸法が大きくなることを回避しながら吹出口10a近傍での気流の圧力勾配を小さくすことができる。したがって、吹出口10a近傍での気流の圧力損失及び剥離の発生が抑制され、室内への気流の到達度が増大する。   As described above, the air guide member 30 of the present embodiment has a curved shape in which the first air guide portion 31 is directed downward from the heat exchanger 20 side toward the air outlet 10a, and the curvature thereof is the third. It is formed larger than that of the air guide portion 33, and the angle between the outer end portion and the horizontal direction is 60 degrees, and the outer end portion of the first air guide portion 31 is linearly extended. Since the second wind guide portion 32 is connected, the vertical size of the first wind guide portion 31 and the second wind guide portion 32 is effectively prevented from increasing and the vertical size is sufficiently secured. can do. Thereby, since the dimension of the horizontal direction of the 3rd wind guide part 33 can be enlarged, while avoiding the dimension of the up-down direction of the blower outlet 10a and the horizontal dimension of the whole wind guide member 30 becoming large. The pressure gradient of the airflow in the vicinity of the air outlet 10a can be reduced. Therefore, the pressure loss and separation of the airflow in the vicinity of the air outlet 10a are suppressed, and the reach of the airflow into the room is increased.

また、ケーシングの外側に向けて凸となった湾曲形状を有する第一導風部31と、ケーシングの内側に向けて凸となった湾曲形状を有する第三導風部33とが直接接続された場合、これらの導風部の境界で渦が発生する場合があるが、本実施形態の導風部材30は、第一導風部31と第三導風部33との間に直線状に延びる形状の第二導風部32を有するので、当該渦の発生が抑制される。   In addition, the first air guide portion 31 having a curved shape convex toward the outside of the casing and the third air guide portion 33 having a curved shape convex toward the inside of the casing are directly connected. In some cases, vortices may be generated at the boundary between these air guide portions, but the air guide member 30 of the present embodiment extends linearly between the first air guide portion 31 and the third air guide portion 33. Since the second air guide portion 32 having the shape is provided, the generation of the vortex is suppressed.

さらに、本実施形態の第一導風部31は、熱交換器20の外端部から吹出口10aに向かうにつれて下方に向かう形状を有するので、熱交換器20の外端部の直後から当該導風部材30が下方に湾曲し始める。よって、この導風部材30の上下方向の寸法の確保に必要な当該導風部材30の水平方向の寸法が短縮される。つまり、熱交換器20から吹出口10aまでの水平方向の寸法がさらに短縮されるので、当該室外機が一層小型化される。   Furthermore, since the first air guide portion 31 of the present embodiment has a shape that goes downward from the outer end portion of the heat exchanger 20 toward the air outlet 10a, the air guide portion 31 immediately after the outer end portion of the heat exchanger 20 has the shape. The wind member 30 begins to curve downward. Therefore, the horizontal dimension of the air guide member 30 necessary for securing the vertical dimension of the air guide member 30 is shortened. That is, since the horizontal dimension from the heat exchanger 20 to the blower outlet 10a is further shortened, the said outdoor unit is further reduced in size.

また、本実施形態の導風部材30は絞り部30aを有するので、この絞り部30aよりも外側である吹出口10aでの導風部材30と風向板13との間の距離L1が、当該絞り部30aと風向板13との間の距離L0よりも大きくなる。つまり、熱交換器20を通過した気流の圧力は、絞り部30aと風向板13との間で最大となった後、吹出口10aに向かうにつれて徐々に低下する。よって、導風部材30と風向板13との間の距離が吹出口10aで最小とされる場合に比べ、吹出口10a近傍での気流の圧力勾配を小さくすることができ、その結果、前記気流の圧力損失が低減される。   Moreover, since the air guide member 30 of this embodiment has the aperture | diaphragm | squeeze part 30a, the distance L1 between the air guide member 30 and the wind direction board 13 in the blower outlet 10a outside this aperture | diaphragm | squeeze part 30a is the said aperture_diaphragm | restriction. It becomes larger than the distance L0 between the portion 30a and the wind direction plate 13. That is, the pressure of the airflow that has passed through the heat exchanger 20 becomes maximum between the throttle portion 30a and the wind direction plate 13, and then gradually decreases toward the air outlet 10a. Therefore, compared with the case where the distance between the air guide member 30 and the wind direction plate 13 is minimized at the air outlet 10a, the pressure gradient of the air current in the vicinity of the air outlet 10a can be reduced. The pressure loss is reduced.

なお、今回開示された実施形態は、すべての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は、上記した実施形態の説明ではなく特許請求の範囲によって示され、さらに特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれる。   The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

例えば、上記実施形態では、ケーシングは、室内から吸い込んだ空気Wを四方に吹き出すために四つの吹出口10aを有する例について示したが、本発明は、単一の吹出口を有するケーシングを備える室内機にも適用が可能である。   For example, in the said embodiment, although the casing showed about the example which has the four blower outlets 10a in order to blow off the air W suck | inhaled from the room in all directions, this invention is a room | chamber interior provided with the casing which has a single blower outlet. It can also be applied to machines.

10 化粧枠
10a 吹出口
11 コーナーカバー
12 天板
13 風向板
14 化粧板
14a 吸込グリル
20 熱交換器
22 ドレンパン
24 送風機
24a 羽根車
24b モータ
25 ベルマウス
26 人検知センサ
27 電装ユニット
28 エアフィルター
30 導風部材
30a 絞り部
31 第一導風部
32 第二導風部
33 第三導風部
DESCRIPTION OF SYMBOLS 10 Decorative frame 10a Air outlet 11 Corner cover 12 Top plate 13 Wind direction plate 14 Decorative plate 14a Suction grill 20 Heat exchanger 22 Drain pan 24 Blower 24a Impeller 24b Motor 25 Bell mouth 26 Human detection sensor 27 Electrical unit 28 Air filter 30 Wind guide Member 30a Restriction portion 31 First air guide portion 32 Second air guide portion 33 Third air guide portion

Claims (3)

  1. その内部を冷媒が流れる熱交換器(20)と、室内の空気を取り込んで前記熱交換器(20)に向けて風を送る送風機(24)と、前記熱交換器(20)及び前記送風機(24)を収容するとともに側方に吹出口(10a)を有するケーシングと、このケーシングの内面上側に設けられており、前記送風機(24)の駆動により生ずる気流のうち前記熱交換器(20)を通過したものを前記吹出口(10a)へ導く導風部材(30)とを備える室内機であって、
    前記導風部材(30)は、その内面に前記熱交換器(20)側から前記吹出口(10a)側の端部に向けて第一導風部(31)、第二導風部(32)及び第三導風部(33)をこの順に有し、前記第一導風部(31)は、前記熱交換器(20)側から前記吹出口(10a)に向かうにつれて下方に向かうとともに前記ケーシングの外側に向けて凸となった湾曲形状を有し、前記第二導風部(32)は、前記第一導風部(31)の端部から直線状に延びる形状を有し、前記第三導風部(33)は、前記ケーシングの内側に向けて凸となった湾曲形状を有し、
    前記第一導風部(31)の曲率は、前記第三導風部(33)の曲率よりも大きく形成された室内機。
    A heat exchanger (20) through which the refrigerant flows, a blower (24) that takes in indoor air and sends wind toward the heat exchanger (20), the heat exchanger (20), and the blower ( 24) and a casing having a blower outlet (10a) on the side, and an inner surface upper side of the casing, and the heat exchanger (20) out of the air flow generated by driving the blower (24). An indoor unit comprising an air guide member (30) for guiding what has passed to the air outlet (10a),
    The air guide member (30) has, on the inner surface, a first air guide part (31) and a second air guide part (32) from the heat exchanger (20) side toward the end on the air outlet (10a) side. ) And the third air guide portion (33) in this order, and the first air guide portion (31) is directed downward from the heat exchanger (20) side toward the air outlet (10a) and the above. The second air guide part (32) has a shape extending linearly from the end of the first air guide part (31), and has a curved shape that is convex toward the outside of the casing, The third air guide portion (33) has a curved shape that is convex toward the inside of the casing,
    The indoor unit in which the curvature of the first air guiding part (31) is formed larger than the curvature of the third air guiding part (33).
  2. 請求項1に記載の室内機において、
    前記第一導風部(31)は、前記熱交換器(20)の外端部から前記吹出口(10a)に向かうにつれて下方に向かう形状を有する室内機。
    The indoor unit according to claim 1,
    The first air guide section (31) is an indoor unit having a shape that extends downward from the outer end of the heat exchanger (20) toward the outlet (10a).
  3. 請求項1又は2に記載の室内機において、
    前記ケーシングには、前記吹出口(10a)から吹き出す風の向きを変更するための風向板(13)が取り付けられており、
    前記導風部材(30)は、前記送風機(24)の駆動時に最も下方を向いた姿勢にある前記風向板(13)と当該導風部材(30)との間の距離を最小とする絞り部(30a)を有し、この絞り部(30a)が当該導風部材(30)の前記吹出口(10a)側の端部よりも内側に形成されている室内機。
    The indoor unit according to claim 1 or 2,
    The casing is attached with a wind direction plate (13) for changing the direction of the wind blown out from the air outlet (10a),
    The air guide member (30) is a throttle portion that minimizes the distance between the air guide plate (13) and the air guide member (30) that are in the most downward orientation when the blower (24) is driven. (30a), and this throttle part (30a) is formed inside the end on the air outlet (10a) side of the air guide member (30).
JP2012074350A 2012-03-28 2012-03-28 Indoor unit Active JP5724924B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6516095B2 (en) * 2015-04-27 2019-05-22 株式会社富士通ゼネラル Ceiling-mounted air conditioner

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JPS5869334A (en) * 1981-10-21 1983-04-25 Mitsubishi Electric Corp Air conditioner
JPS5962432U (en) * 1982-10-20 1984-04-24
US4458502A (en) * 1981-10-21 1984-07-10 Mitsubishi Denki Kabushiki Kaisha Air conditioning device
JPS6262151U (en) * 1985-10-09 1987-04-17
JP2000018632A (en) * 1998-06-30 2000-01-18 Matsushita Electric Ind Co Ltd Air conditioner
US6141983A (en) * 1998-06-30 2000-11-07 Matsushita Electric Industrial Co., Ltd. Air conditioner
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EP1674800A1 (en) * 2004-12-24 2006-06-28 Matsushita Electric Industrial Co., Ltd. Air conditioner

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JPS5869334A (en) * 1981-10-21 1983-04-25 Mitsubishi Electric Corp Air conditioner
US4458502A (en) * 1981-10-21 1984-07-10 Mitsubishi Denki Kabushiki Kaisha Air conditioning device
JPS5962432U (en) * 1982-10-20 1984-04-24
JPS6262151U (en) * 1985-10-09 1987-04-17
JP2000018632A (en) * 1998-06-30 2000-01-18 Matsushita Electric Ind Co Ltd Air conditioner
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JP2004116859A (en) * 2002-09-25 2004-04-15 Sharp Corp Air conditioner
EP1553361A1 (en) * 2002-09-25 2005-07-13 Sharp Kabushiki Kaisha Air conditioner
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