JP6686507B2 - Air conditioner indoor unit - Google Patents

Air conditioner indoor unit Download PDF

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JP6686507B2
JP6686507B2 JP2016027477A JP2016027477A JP6686507B2 JP 6686507 B2 JP6686507 B2 JP 6686507B2 JP 2016027477 A JP2016027477 A JP 2016027477A JP 2016027477 A JP2016027477 A JP 2016027477A JP 6686507 B2 JP6686507 B2 JP 6686507B2
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indoor unit
outlet
air conditioner
heat exchanger
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JP2017146003A (en
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浩章 野口
浩章 野口
英大 岡本
英大 岡本
和樹 吉村
和樹 吉村
星羅 竹本
星羅 竹本
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Fujitsu General Ltd
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Description

本発明は、暖房運転時に吹き出される暖気の吹き上がりを抑制した空気調和機の室内機に関する。   The present invention relates to an indoor unit of an air conditioner that suppresses the warm air blown out during heating operation.

一般的な空気調和機の室内機３００は、図５に示すように、吸込グリル３１、その吸込グリル３１が前面に開閉自在に位置する前面板３２、空気の吸込口３ａを有する天面板３、背面板４、底面板５、左側面板６、及び図示しない右側面板により、筐体７が形成されている。吸込グリル３１の下片３１ａは前面板３２に当接しており、その図示しない上端は天面板３に支持され、その上端を支点として開閉自在に配置されている。この前面板３２の上部、つまり吸込グリル３１の背面側には図示しないフィルタが装着される。   As shown in FIG. 5, an indoor unit 300 of a general air conditioner includes, as shown in FIG. 5, a suction grill 31, a front plate 32 on which the suction grill 31 is openable and closable, a top plate 3 having an air inlet 3a, A housing 7 is formed by the back plate 4, the bottom plate 5, the left side plate 6, and the right side plate (not shown). The lower piece 31a of the suction grill 31 is in contact with the front plate 32, the upper end (not shown) thereof is supported by the top plate 3, and the upper and lower ends thereof are arranged to be openable and closable. A filter (not shown) is mounted on the upper portion of the front plate 32, that is, on the rear surface side of the suction grill 31.

８Ａは第１熱交換器、８Ｂは第２熱交換器、８Ｃは第３熱交換器である。３３Ａは第１及び第２熱交換器８Ａ，８Ｂ用の第１ドレンパン、３３Ｂは第３熱交換器８Ｃ用の第２ドレンパンである。   8A is a first heat exchanger, 8B is a second heat exchanger, and 8C is a third heat exchanger. 33A is a first drain pan for the first and second heat exchangers 8A and 8B, and 33B is a second drain pan for the third heat exchanger 8C.

１０は送風ファンであり、第１乃至第３熱交換器８Ａ〜８Ｃの空気流出側に配置されている。１１は吹出ガイド板である。１２は空気の吹出口であり、第１ドレンパン３３Ａと吹出ガイド板１１の間に設けられている。この吹出口１２には第１上下風向板１３Ａと第２上下風向板１３Ｂが配置されている。第１上下風向板１３Ａは軸１３Ａ１を支点に回動し、第２上下風向板１３Ｂは軸１３Ｂ１を支点に回動する。   A blower fan 10 is arranged on the air outflow side of the first to third heat exchangers 8A to 8C. Reference numeral 11 is an outlet guide plate. Reference numeral 12 denotes an air outlet, which is provided between the first drain pan 33A and the outlet guide plate 11. A first vertical wind direction plate 13A and a second vertical wind direction plate 13B are arranged at the outlet 12. The first vertical wind direction plate 13A rotates about a shaft 13A1 as a fulcrum, and the second vertical wind direction plate 13B rotates about a shaft 13B1.

図５の室内機３００は、冷房運転時には吹き出される冷気が室内空気より重いので、遠くまでその冷気が届くように、第１及び第２上下風向板１３Ａ，１３Ｂが横向きに設定される。一方、暖房運転時には吹き出される暖気Ｂが室内空気より軽いので、その空気の浮き上がりを抑制するために、図５に示したように、第１及び第２上下風向板１３Ａ，１３Ｂが縦向きに設定される。   In the indoor unit 300 of FIG. 5, since the cool air blown out is heavier than the room air during the cooling operation, the first and second vertical airflow direction vanes 13A and 13B are set sideways so that the cool air can reach far. On the other hand, since the warm air B blown out during the heating operation is lighter than the indoor air, the first and second vertical airflow direction vanes 13A and 13B are vertically oriented so as to suppress the floating of the air, as shown in FIG. Is set.

しかしながら、暖房運転時に第１及び第２上下風向板１１Ａ，１１Ｂを縦向きに設定しても、暖気Ｂの吹き上がりを効果的に抑制することができない。   However, even if the first and second vertical airflow direction vanes 11A and 11B are set in the vertical direction during the heating operation, it is not possible to effectively prevent the warm air B from rising.

そこで、従来では、主熱交換器の他に熱交換量のより小さな補助熱交換器を補助送風ファンとともに配置し、その補助熱交換器において、暖房運転時に主熱交換器から流出する主流暖気よりも温度の低い副流暖気を生成し、主流暖気の上側からその副流暖気を吹き付けるようにして、主流暖気の吹き上がりを防止することがおこなわれている（特許文献１，２）。   Therefore, conventionally, in addition to the main heat exchanger, an auxiliary heat exchanger with a smaller heat exchange amount is arranged together with the auxiliary blower fan, and in the auxiliary heat exchanger, the mainstream warm air that flows out from the main heat exchanger during the heating operation is In addition, the secondary stream warm air having a low temperature is generated, and the secondary stream warm air is blown from the upper side of the main stream warm air to prevent the main stream warm air from rising (Patent Documents 1 and 2).

また、熱交換器の空気流入側にイオン発生ユニットを配置して、そのユニットを通過した空気を副流として熱交換器を通過させることなく吹出口から出る暖気に吹き付けるようにすることも行われている（特許文献３）。   It is also possible to arrange an ion generation unit on the air inflow side of the heat exchanger so that the air passing through the unit is blown as warm air from the outlet without passing through the heat exchanger as a sidestream. (Patent Document 3).

さらに、専用の大型の風向板を配置して、その風向板の湾曲面によって吹出口から吹き出される暖気を遠方まで届かせることが行われている（特許文献４）。   Further, it has been practiced to arrange a dedicated large-scale wind direction plate so that the warm air blown out from the blow-out port reaches far away by the curved surface of the wind direction plate (Patent Document 4).

特開２００１−０７４２６７号公報JP 2001-074267 A 特開２００１−０７４３０４号公報JP, 2001-074304, A 特開２００３−２２７６２３号公報JP, 2003-227623, A 特開２００９−１０３３４８号公報JP, 2009-103348, A

しかしながら、上記した従来例では構造が複雑になってコスト増を招いたり、外観デザイン面での制約が大きくなる等の問題があった。   However, in the above-mentioned conventional example, there are problems that the structure is complicated and the cost is increased, and the restrictions on the appearance design are increased.

本発明の目的は、簡単な構成によって低コストで且つ外観デザイン面の制約を伴うことなく効果的に暖気の吹き上がりを防止できる空気調和機の室内機を提供することである。   An object of the present invention is to provide an indoor unit of an air conditioner which has a simple structure and can effectively prevent warm air from blowing up at low cost and without restrictions on the external design.

上記目的を達成するために、請求項１にかかる発明は、吸込グリルと、空気を吸い込む吸込口と、該吸込口から吸い込まれた空気と冷媒を熱交換する熱交換器と、該熱交換器で熱交換された空気を吹き出す第１吹出口と、該第１吹出口と前記熱交換器との間に配置され前記吸込口から前記熱交換器を経由してきた空気を前記第１吹出口に送風する送風ファンと、前記第１吹出口から吹き出される空気の上下の吹出方向を調整する上下風向板と、を有する空気調和機の室内機において、前記第１吹出口の前方に下向きに形成された第２吹出口と、前記第１吹出口と前記送風ファンとの間と前記第２吹出口との間に前記第２吹出口の側で前記吸込グリルの内側を経由するように形成され流通する空気を冷却する迂回導風路と、冷房運転時に前記迂回導風路を遮断し暖房運転時に前記迂回導風路に前記送風ファンから吹き出された空気の一部をガイドするダンパとを設けたことを特徴とする。
In order to achieve the above object, the invention according to claim 1 provides a suction grill, a suction port for sucking in air, a heat exchanger for exchanging heat between the air sucked from the suction port and a refrigerant, and the heat exchanger. A first outlet that blows out the heat-exchanged air, and the air that has been arranged between the first outlet and the heat exchanger and that has passed through the heat exchanger from the inlet to the first outlet. An indoor unit of an air conditioner having a blower fan that blows air and a vertical wind direction plate that adjusts the vertical blowing direction of the air blown from the first outlet, and is formed downward in front of the first outlet. Is formed so as to pass through the inside of the suction grille on the side of the second outlet between the second outlet and the first outlet and the blower fan, and between the second outlet. A bypass air duct for cooling the circulating air and the bypass air duct during cooling operation. Characterized in that a damper for guiding part of the air blown out of the air guide path from the blowing fan to the bypass air guide path when interrupted by the heating operation.

請求項２にかかる発明は、請求項１に記載の空気調和機の室内機において、前記迂回導風路は壁体によって形成され、該壁体の少なくとも一部の外側が、前記熱交換器の空気流入側に面していることを特徴とする。   According to a second aspect of the present invention, in the indoor unit of the air conditioner according to the first aspect, the bypass air guide passage is formed by a wall body, and at least a part of the outside of the wall body is the heat exchanger. It is characterized in that it faces the air inflow side.

請求項３にかかる発明は、請求項２に記載の空気調和機の室内機において、前記迂回導風路の前記壁体の前記一部が熱交換部からなることを特徴とする。   According to a third aspect of the present invention, in the indoor unit for an air conditioner according to the second aspect, the part of the wall body of the bypass air duct comprises a heat exchange section.

請求項４にかかる発明は、請求項２又は３に記載の空気調和機の室内機において、前記熱交換器の下部に前記熱交換器で生じるドレイン水を受けて排出するドレンパンが配置され、前記迂回導風路の前記壁体の前記一部が、前記ドレンパンの一部で兼用されていることを特徴とする。   According to a fourth aspect of the present invention, in the indoor unit of the air conditioner according to the second or third aspect, a drain pan for receiving and discharging drain water generated in the heat exchanger is disposed below the heat exchanger, and The part of the wall of the bypass air duct is also used as part of the drain pan.

請求項５にかかる発明は、請求項１乃至４のいずれか１つに記載の空気調和機の室内機において、前記迂回導風路は、前記ダンパから前記第２吹出口に向かう経路中に、前記第２吹出口から遠ざかる向きの経路を含むことを特徴とする。   According to a fifth aspect of the present invention, in the indoor unit of the air conditioner according to any one of the first to fourth aspects, the bypass air duct is in a path from the damper to the second outlet, It is characterized in that it includes a path in a direction away from the second outlet.

請求項６にかかる発明は、請求項１乃至５のいずれか１つに記載の空気調和機の室内機において、前記風向板は複数枚形成され、該複数枚の風向板の内の前記ダンパに近い風向板は、冷房運転時に前記送風ファンから吹き出された空気の一部を前方にガイドし暖房運転時に前記送風ファンから吹き出された空気の一部を前記迂回導風路にガイドすることを特徴とする。   According to a sixth aspect of the present invention, in the indoor unit of the air conditioner according to any one of the first to fifth aspects, a plurality of the airflow direction plates are formed, and the damper is provided in the plurality of the airflow direction plates. The near wind direction plate guides part of the air blown from the blower fan to the front during cooling operation, and guides part of the air blown from the blower fan to the bypass air guide path during heating operation. And

本発明によれば、暖房運転時に、第１吹出口と送風ファンとの間と第２吹出口との間に形成された迂回導風路を経由して第２吹出口から吹き出される暖気が、その迂回導風路で冷却されて、第１吹出口から吹き出される暖気の上方から吹き付けられるので、主流暖気の吹き上がりを効果的に抑制することができる。また、通常の室内機に追加すべき構成は迂回導風路のみで済むので、コスト安を実現できる。さらに、迂回導風路は第１吹出口と送風ファンとの間と第２吹出口との間に形成されるので、室内機の外観デザインに大きな制約を与えることはない。   According to the present invention, during the heating operation, the warm air blown out from the second outlet through the bypass air guiding path formed between the first outlet and the blower fan and the second outlet is provided. Since it is cooled in the bypass air guide passage and is blown from above the warm air blown from the first outlet, it is possible to effectively prevent the mainstream warm air from being blown up. Further, since the configuration that should be added to the normal indoor unit is only the bypass air duct, cost reduction can be realized. Further, since the bypass airflow guide passage is formed between the first air outlet and the blower fan and between the second air outlet, it does not significantly limit the exterior design of the indoor unit.

本発明の第１実施例の室内機の冷房運転時の断面図である。It is sectional drawing at the time of cooling operation of the indoor unit of 1st Example of this invention. 図１の室内機の暖房運転時の断面図である。It is sectional drawing at the time of heating operation of the indoor unit of FIG. 本発明の第２実施例の室内機の冷房運転時の断面図である。It is sectional drawing at the time of cooling operation of the indoor unit of 2nd Example of this invention. 図３の室内機の暖房運転時の断面図である。It is sectional drawing at the time of heating operation of the indoor unit of FIG. 従来の室内機の暖房運転時の断面図であるIt is sectional drawing at the time of heating operation of the conventional indoor unit.

＜第１実施例＞
図１に本発明の第１実施例の室内機１００を示す。室内機１００は、吸込グリル１、その吸込グリル１が前面に開閉自在に位置する前面板２、空気の吸込口３ａを有する天面板３、背面板４、底面板５、左側面板６、及び図示しない右側面板により、筐体７が形成されている。前面板２は、縦片２ａが吸込グリル１の下部裏面に平行に位置し、その縦片２ａの上部から背面方向に伸びた横片２ｂと、その横片２ｂの後端に形成された後端部２ｃを有する。この前面板２の上部、つまり吸込グリル１の背面側には図示しないフィルタが装着される。 <First embodiment>
FIG. 1 shows an indoor unit 100 according to the first embodiment of the present invention. The indoor unit 100 includes a suction grill 1, a front plate 2 on which the suction grill 1 is openable and closable on the front surface, a top plate 3 having an air inlet 3a, a back plate 4, a bottom plate 5, a left side plate 6, and the drawings. The housing 7 is formed by the right side plate that does not. The front plate 2 includes a vertical piece 2a positioned parallel to the lower rear surface of the suction grill 1, and a horizontal piece 2b extending rearward from the upper part of the vertical piece 2a and a rear piece formed on the rear end of the horizontal piece 2b. It has an end 2c. A filter (not shown) is mounted on the upper portion of the front plate 2, that is, on the back side of the suction grill 1.

８Ａは第１熱交換器、８Ｂは第２熱交換器、８Ｃは第３熱交換器である。９Ａは第１及び第２熱交換器８Ａ，８Ｂで生じるドレイン水を受けて排出するための第１ドレンパン、９Ｂは第３熱交換器８Ｃで生じるドレイン水を受けて排出するための第２ドレンパンである。第１ドレンパン９Ａは、ドレイン水飛び散り防止用の下片９Ａａ、第１熱交換器８Ａを支持する前片９Ａｂ及び支持片９Ａｃ、並びにレイン水飛び散り防止用の後片９Ａｄを有し、前片９Ａｂの先端が前面板２の後端部２ｃに当接している。この下片９Ａａには開口９Ａａ１が形成されている。   8A is a first heat exchanger, 8B is a second heat exchanger, and 8C is a third heat exchanger. 9A is a first drain pan for receiving and discharging drain water generated in the first and second heat exchangers 8A and 8B, and 9B is a second drain pan for receiving and discharging drain water generated in the third heat exchanger 8C. Is. The first drain pan 9A includes a lower piece 9Aa for preventing drain water splash, a front piece 9Ab and a support piece 9Ac for supporting the first heat exchanger 8A, and a rear piece 9Ad for preventing rain water splash, and the front piece 9Ab. Is in contact with the rear end portion 2c of the front plate 2. An opening 9Aa1 is formed in the lower piece 9Aa.

１０は送風ファンであり、第１乃至第３熱交換器８Ａ〜８Ｃの空気流出側に配置されている。１１は吹出ガイド板である。１２Ａは空気の第１吹出口であり、第１ドレンパン９Ａと吹出ガイド板１１の間に設けられている。この第１吹出口１２Ａには第１上下風向板１３Ａと第２上下風向板１３Ｂが配置されている。第１上下風向板１３Ａは軸１３Ａ１を支点に回動し、第２上下風向板１３Ｂは軸１３Ｂ１を支点に回動する。   A blower fan 10 is arranged on the air outflow side of the first to third heat exchangers 8A to 8C. Reference numeral 11 is an outlet guide plate. Reference numeral 12A is a first air outlet, which is provided between the first drain pan 9A and the air outlet guide plate 11. A first vertical wind direction plate 13A and a second vertical wind direction plate 13B are arranged at the first outlet 12A. The first vertical wind direction plate 13A rotates about a shaft 13A1 as a fulcrum, and the second vertical wind direction plate 13B rotates about a shaft 13B1.

第１ドレンパン９Ａの下片９Ａａに形成された開口９Ａａ１には、軸１４ａを支点に回動するダンパ１４が配置されている。そして、このダンパ１４の吸込グリル１の側には、第１ドレンパン９Ａの前片９Ａｂ、前面板２、及び第１ドレンパン９Ａに平行に配置された下板１５を壁体１６ａとして囲まれる迂回導風路１６が形成され、この迂回導風路１６は第２吹出口１２Ｂに通じている。つまり、迂回導風路１６の壁体１６ａの一部は、ドレンパン９Ａの前片９Ａｂで兼用されている。この第２吹出口１２Ｂは、前面板２の縦片２ａと下板１５の配置によって下向に開口し、第１吹出口１２Ａの前方に位置している。   A damper 14 that rotates about a shaft 14a as a fulcrum is arranged in the opening 9Aa1 formed in the lower piece 9Aa of the first drain pan 9A. Then, on the suction grill 1 side of the damper 14, the detour guide surrounded by the front piece 9Ab of the first drain pan 9A, the front plate 2, and the lower plate 15 arranged in parallel with the first drain pan 9A as a wall body 16a. An air duct 16 is formed, and this bypass air duct 16 communicates with the second outlet 12B. That is, a part of the wall 16a of the bypass air duct 16 is also used as the front piece 9Ab of the drain pan 9A. The second outlet 12B opens downward due to the arrangement of the vertical piece 2a of the front plate 2 and the lower plate 15, and is located in front of the first outlet 12A.

さて、この室内機１００は、冷房運転時には図１に示すように、第１及び第２上下風向板１３Ａ、１３Ｂが横向きに設定され、迂回導風路１６はダンパ１４によって閉じられる。このため、第１乃至第３熱交換器８Ａ〜８Ｃによって冷媒と熱交換されて生成され送風ファン１０９によって吹き出される冷気Ａが、吹出ガイド板１１と第１及び第２上下風向板１３Ａ，１３Ｂによって水平方向にガイドされて、矢印で示すように前方に吹き出される。   In the indoor unit 100, the first and second vertical airflow direction vanes 13A and 13B are set sideways during the cooling operation, and the bypass air duct 16 is closed by the damper 14, as shown in FIG. For this reason, the cold air A generated by heat exchange with the refrigerant by the first to third heat exchangers 8A to 8C and blown out by the blower fan 109 is the blowout guide plate 11 and the first and second vertical airflow direction vanes 13A and 13B. It is guided horizontally by and is blown forward as indicated by the arrow.

次に、暖房運転時には図２に示すように、第１上下風向板１３Ａが図２において時計方向に回動されて先端１３Ａａが第１ドレンパン９Ａの下片９Ａａの先端９Ａａ２に当接する。また、ダンパ１４が時計方向に若干回動することで、第１ドレンパン９Ａの下片９Ａａの開口９Ａａ１が開かれる。このため、迂回導風路１６が第１吹出口１２Ａと第２吹出口１２Ｂとの間を連通させる。なお、第２上下風向板１３Ｂは反時計方向に回動して縦向きとなっている。   Next, during the heating operation, as shown in FIG. 2, the first vertical airflow direction vane 13A is rotated clockwise in FIG. 2 so that the tip end 13Aa contacts the tip end 9Aa2 of the lower piece 9Aa of the first drain pan 9A. Further, the damper 14 slightly rotates clockwise, so that the opening 9Aa1 of the lower piece 9Aa of the first drain pan 9A is opened. Therefore, the bypass air guide path 16 connects the first outlet 12A and the second outlet 12B. The second vertical wind direction plate 13B is turned counterclockwise and is in the vertical direction.

したがって、送風ファン１０によって送風される暖気の内の大部分を占める主流暖気Ｂ１は、吹出ガイド板１１と第２上下風向板１３Ｂによってガイドされて、第１吹出口１２Ａから矢印で示すように室内機１００の前方に吹き出される。このとき、主流暖気Ｂ１は室内の空気より軽いので吹き上がり傾向が強い。一方、暖気の一部は、第１上下風向板１３Ａとダンパ１４によって迂回導風路１６の方向にガイドされ、その迂回導風路１６を経由して、第２吹出口１２Ｂから下方向に矢印で示すように副流暖気Ｂ２として吹き出される。この副流暖気Ｂ２は迂回導風路１６を経由することで主流暖気Ｂ１よりも遠回りとなるため、自然冷却されて温度が低下し、第１吹出口１２Ａから吹き出される主流暖気Ｂ１を下方向に押し付けるようになる。   Therefore, the mainstream warm air B1 that occupies most of the warm air blown by the blower fan 10 is guided by the blow-out guide plate 11 and the second vertical wind direction plate 13B, and is blown from the first outlet 12A as shown by an arrow in the room. It is blown out in front of the machine 100. At this time, since the mainstream warm air B1 is lighter than the indoor air, it tends to blow up. On the other hand, a part of the warm air is guided by the first vertical airflow direction vane 13A and the damper 14 in the direction of the bypass air guide passage 16, and passes through the bypass air guide passage 16 and then the downward arrow from the second outlet 12B. As shown by (3), it is blown out as the sidestream warm air B2. Since the sidestream warm air B2 becomes a detour than the mainstream warm air B1 by passing through the bypass air guide path 16, the sidestream warm air B2 is naturally cooled and its temperature is lowered, and the mainstream warm air B1 blown out from the first outlet 12A is directed downward. Will be pressed against.

したがって、吹き上がり傾向の強い主流暖気Ｂ１が低温の副流暖気Ｂ２によって上から押さえ付けられることで、主流暖気Ｂ１の吹き上がりが抑制され、その主流暖気Ｂ１と副流暖気Ｂ２を合成した合成暖気Ｂ３の直進性が強くなり、室内機１００から遠くまで届くようになる。   Therefore, since the mainstream warm air B1 having a strong tendency to blow up is suppressed from above by the low-temperature sidestream warm air B2, the rise of the mainstream warm air B1 is suppressed, and the combined warm air obtained by combining the mainstream warm air B1 and the sidestream warm air B2. The straightness of B3 becomes strong, and it can reach far from the indoor unit 100.

また、本実施例では、迂回導風路１６の壁体１６ａを形成する前面板２の上片２ｂと第１ドレンパン９Ａの前片９Ａｂが、第１熱交換器８Ａに流入する冷たい空気に接しているので、迂回導風路１６が強制冷却される。このため、迂回導風路１６の通過する副流暖気Ｂ２が壁体１６ａに接することでさらに冷却され、上記主流暖気Ｂ１の吹き上がり抑制の効果がより大きくなる。   Further, in this embodiment, the upper piece 2b of the front plate 2 forming the wall body 16a of the bypass air duct 16 and the front piece 9Ab of the first drain pan 9A come into contact with the cold air flowing into the first heat exchanger 8A. Therefore, the bypass air guide passage 16 is forcibly cooled. Therefore, the sidestream warm air B2 passing through the bypass air guide passage 16 is further cooled by coming into contact with the wall 16a, and the effect of suppressing the mainstream warm air B1 from rising is further enhanced.

ここで、迂回導風路１６の壁体１６ａを形成する前面板２の上片２ｂと第１ドレンパン９Ａの前片９Ａｂは、熱伝導率が高いほど、副流暖気Ｂ２を低温化させることができる。このため、それら上片２ｂと前片９Ａｂに熱伝導率の高い材質を使用して、そこに熱交換部を形成することが好ましい。その材質としては板金等の金属が好ましいが、製造の関係から樹脂を使用する場合はその厚みを強度が許す限り薄くして熱伝達率を高くすることが好ましい。   Here, the upper piece 2b of the front plate 2 and the front piece 9Ab of the first drain pan 9A forming the wall body 16a of the bypass air duct 16 and the front piece 9Ab of the first drain pan 9A can lower the sidestream warm air B2 as the heat conductivity increases. it can. For this reason, it is preferable that the upper piece 2b and the front piece 9Ab are made of a material having a high thermal conductivity, and the heat exchange section is formed therein. A metal such as sheet metal is preferable as the material, but in the case of using a resin for manufacturing reasons, it is preferable to make the thickness as thin as the strength allows to increase the heat transfer coefficient.

以上から本実施例の室内機１００によれば、第１吹出口１２Ａの前方の上方に第２吹出口１２Ｂを形成するとともに、第１吹出口１２Ａから第２吹出口１２Ｂに至る迂回導風路１６を形成し、その迂回導風路１６をダンパ１４で連通／遮断可能に構成することで、低コストで効果的に暖気の吹き上がりを抑制することができ、また外観デザインに制約を与えることもない。   As described above, according to the indoor unit 100 of the present embodiment, the second blowout port 12B is formed above and in front of the first blowout port 12A, and the bypass air guiding path from the first blowout port 12A to the second blowout port 12B is formed. 16 is formed, and the bypass airflow passage 16 can be communicated / interrupted by the damper 14, so that warm air can be effectively suppressed from rising at low cost, and the appearance design is restricted. Nor.

＜第２実施例＞
図３に本発明の第２実施例の室内機２００を示す。図１の室内機１００で説明したものと同じものは同じ符号をつけた。本実施例の室内機２００では、吸込グリル１の下部内側に、上横片２１ａと縦片２１ｂと下片２１ｃを有する略逆Ｌ字形状の第１ガイド板２１を、その上横片２１ａの前端２１ａ１が吸込グリル１を向くように、且つ下片２１ｃが第１ドレンパン９Ａの前片９Ａｂの先端９Ａｂ１に当接するように、取り付ける。 <Second embodiment>
FIG. 3 shows an indoor unit 200 according to the second embodiment of the present invention. The same components as those described for the indoor unit 100 in FIG. 1 are designated by the same reference numerals. In the indoor unit 200 of this embodiment, a substantially inverted L-shaped first guide plate 21 having an upper horizontal piece 21a, a vertical piece 21b, and a lower piece 21c is provided inside the lower portion of the suction grill 1, and the upper horizontal piece 21a is provided with The front end 21a1 is attached so that the front end 21a1 faces the suction grill 1 and the lower piece 21c abuts on the tip 9Ab1 of the front piece 9Ab of the first drain pan 9A.

また、第１ガイド２１と吸込グリル１で囲まれた内部に入るように第２ガイド板２２を取り付ける。この第２ガイド板２２は、上端２２ａ１が第１ガイド板２１の上横片２１ａの下面に非接触で臨む縦片２２ａと、奥端２２ｂ１が下板１５に当接する下片２２ｂとにより、Ｌ字形状に形成されている。   Further, the second guide plate 22 is attached so as to enter the inside surrounded by the first guide 21 and the suction grill 1. The second guide plate 22 has a vertical piece 22a whose upper end 22a1 faces the lower surface of the upper horizontal piece 21a of the first guide plate 21 in a non-contact manner, and a lower piece 22b whose rear end 22b1 abuts the lower plate 15 so as to be L It is formed in a letter shape.

これら第１ガイド板２１及び第２ガイド板２２と第１ドレンパン９Ａの前片９Ａｂを壁体２３ａとすることによって、ダンパ１４が取り付けられた開口９Ａａ１から第２吹出口１２Ｂに至る迂回導風路２３の経路が、折返し形状となっている。つまり、迂回導風路２３は、ダンパ１４から第２吹出口１２Ｂに向かう経路中に、第２吹出口１２Ｂから遠ざかる向きの経路２３ｂを含む。   By using the first guide plate 21, the second guide plate 22, and the front piece 9Ab of the first drain pan 9A as the wall body 23a, the bypass air guiding path from the opening 9Aa1 to which the damper 14 is attached to the second outlet 12B. Route 23 has a folded shape. In other words, the bypass air guide path 23 includes the path 23b that is directed away from the second outlet 12B in the path from the damper 14 to the second outlet 12B.

このように迂回導風路２３は、第２吹出口１２Ｂから遠ざかる向きの経路２３ｂを含むことによって、その経路２３ｂに対応した戻りの経路２３ｃも追加されるので、図１で説明した迂回導風路１６に比べて、開口９Ａａ１から第２吹出口１２Ｂに至る経路が長くなっているため、副流暖流Ｂ２を自然冷却する効果が大きくなる。また、第１熱交換器８Ａに流入する冷たい空気に接している第１ガイド板２１と第１ドレンパン９Ａの前片９Ａｂの合計面積が大きくなるので、当該の第１ガイド板２１と前片９Ａｂとで形成される熱交換部での熱交換量が大きくなり、副流暖流Ｂ２を強制冷却する効果も大きくなる。   In this way, since the bypass air guiding path 23 includes the path 23b in the direction away from the second outlet 12B, the return path 23c corresponding to the path 23b is also added. Therefore, the bypass air guiding path described in FIG. Since the path from the opening 9Aa1 to the second outlet 12B is longer than the path 16, the effect of naturally cooling the sidestream warm flow B2 is increased. Further, since the total area of the first guide plate 21 and the front piece 9Ab of the first drain pan 9A which is in contact with the cold air flowing into the first heat exchanger 8A becomes large, the first guide plate 21 and the front piece 9Ab concerned are increased. The amount of heat exchange in the heat exchange portion formed by and becomes large, and the effect of forcibly cooling the sidestream warm flow B2 also becomes large.

したがって、暖房運転時には、図４に示すように、開かれたダンパ１４が位置する開口９Ａａ１から迂回導風路２３に導入され第２吹出口１２Ｂから吹き出される副流暖気Ｂ２は、図１の室内機よりも大きく冷却される。このため、第１吹出口１２Ａから吹き出される主流暖気Ｂ１に対する下方向への押さえ付け効果が高くなり、主流暖気Ｂ１の吹き上がり抑制効果がより大きくなる。   Therefore, during the heating operation, as shown in FIG. 4, the sidestream warm air B2 introduced into the bypass air duct 23 from the opening 9Aa1 in which the opened damper 14 is located and blown out from the second outlet 12B is as shown in FIG. Cools more than the indoor unit. For this reason, the downward pressing effect on the mainstream warm air B1 blown out from the first outlet 12A becomes higher, and the effect of suppressing the mainstream warm air B1 from rising is further enhanced.

なお、本実施例では、迂回導風路１６の壁体１６ａを形成する第１ガイド板２１と第１ドレンパン９Ａの前片９Ａｂについて、第１実施例と同様に、熱伝導率の高い材質を使用することが好ましい。   In this embodiment, the first guide plate 21 forming the wall 16a of the bypass air duct 16 and the front piece 9Ab of the first drain pan 9A are made of a material having a high thermal conductivity, as in the first embodiment. Preference is given to using.

１００，２００，３００：室内機
１：吸込グリル
２：前面板、２ａ：縦片、２ｂ：横片、２ｃ：後端
３：天面板、３ａ：吸込口
４：背面板
５：底面板
６：左側面板
７：筐体
８Ａ，８Ｂ，８Ｃ：第１〜第３熱交換器
９Ａ，９Ｂ：第１、第２ドレンパン、９Ａａ：下片、９Ａａ１：開口、９Ａａ２：先端、９Ａｂ：前片、９Ａｃ：支持片、９Ａｄ：後片
１０：送風ファン
１１：吹出ガイド板
１２Ａ，１２Ｂ：第１、第２吹出口
１３Ａ，１３Ｂ：第１、第２上下風向板、１３Ａ１，１３Ｂ１：軸
１４：ダンパ、１４ａ：軸
１５：下片
１６：迂回導風路、１６ａ：壁体
２１：第１ガイド板、２１ａ：上横片、２１ａ１：前端、２１ｃ：下片
２２：第２ガイド板、２２ａ：縦片、２２ａ１：上端、２２ｂ：奥端
２３：迂回導風路、２３ａ：壁体、２３ｂ，２３ｃ：経路
３１：吸込グリル、３１ａ：下片
３２：前面板
３３Ａ，３３Ｂ：第１、第２のドレンパン
100, 200, 300: Indoor unit 1: Suction grille 2: Front plate, 2a: Vertical piece, 2b: Horizontal piece, 2c: Rear end 3: Top plate, 3a: Suction port 4: Back plate 5, Bottom plate 6: Left side plate 7: Cases 8A, 8B, 8C: First to third heat exchangers 9A, 9B: First and second drain pans, 9Aa: Lower piece, 9Aa1: Opening, 9Aa2: Tip, 9Ab: Front piece, 9Ac : Supporting piece, 9Ad: Rear piece 10: Blower fan 11: Blowout guide plate 12A, 12B: First and second outlets 13A, 13B: First and second vertical airflow direction plates, 13A1, 13B1: Shaft 14: Damper, 14a: Shaft 15: Lower piece 16: Detour air duct, 16a: Wall body 21: First guide plate, 21a: Upper horizontal piece, 21a1: Front end, 21c: Lower piece 22: Second guide plate, 22a: Vertical piece , 22a1: the upper end, 22b: the rear end 23: the detour air duct, 23a: Walls, 23b, 23c: Path 31: Suction grille, 31a: Lower piece 32: Front plate 33A, 33B: First and second drain pans

Claims (6)

吸込グリルと、空気を吸い込む吸込口と、該吸込口から吸い込まれた空気と冷媒を熱交換する熱交換器と、該熱交換器で熱交換された空気を吹き出す第１吹出口と、該第１吹出口と前記熱交換器との間に配置され前記吸込口から前記熱交換器を経由してきた空気を前記第１吹出口に送風する送風ファンと、前記第１吹出口から吹き出される空気の上下の吹出方向を調整する上下風向板と、を有する空気調和機の室内機において、
前記第１吹出口の前方に下向きに形成された第２吹出口と、前記第１吹出口と前記送風ファンとの間と前記第２吹出口との間に前記第２吹出口の側で前記吸込グリルの内側を経由するように形成され流通する空気を冷却する迂回導風路と、冷房運転時に前記迂回導風路を遮断し暖房運転時に前記迂回導風路に前記送風ファンから吹き出された空気の一部をガイドするダンパとを設けたことを特徴とする空気調和機の室内機。
 A suction grille, a suction port for sucking in air, a heat exchanger for exchanging heat between the air sucked from the suction port and the refrigerant, a first outlet for blowing out the air that has been heat-exchanged by the heat exchanger, A blower fan that is arranged between the first outlet and the heat exchanger and blows air that has passed through the heat exchanger from the inlet to the first outlet, and air that is blown out from the first outlet. In the indoor unit of the air conditioner, which has a vertical wind direction plate that adjusts the upward and downward blowing directions of
The second air outlet formed downward in front of the first air outlet, the second air outlet between the first air outlet and the blower fan, and the second air outlet on the side of the second air outlet. A bypass air guide passage that is formed to pass through the inside of the suction grill and cools the circulating air, and the bypass air guide passage is shut off during the cooling operation and blown from the blower fan to the bypass air guide passage during the heating operation. An indoor unit for an air conditioner, which is provided with a damper for guiding a part of air.
請求項１に記載の空気調和機の室内機において、
前記迂回導風路は壁体によって形成され、該壁体の少なくとも一部の外側が、前記熱交換器の空気流入側に面していることを特徴とする空気調和機の室内機。 The indoor unit of the air conditioner according to claim 1,
The indoor unit of the air conditioner, wherein the bypass airflow passage is formed by a wall body, and at least a part of the outer wall of the wall body faces an air inflow side of the heat exchanger. 請求項２に記載の空気調和機の室内機において、
前記迂回導風路の前記壁体の前記一部が熱交換部からなることを特徴とする空気調和機の室内機。 The indoor unit of the air conditioner according to claim 2,
The indoor unit of an air conditioner, wherein the part of the wall body of the bypass air duct comprises a heat exchange section. 請求項２又は３に記載の空気調和機の室内機において、
前記熱交換器の下部に前記熱交換器で生じるドレイン水を受けて排出するドレンパンが配置され、前記迂回導風路の前記壁体の前記一部が、前記ドレンパンの一部で兼用されていることを特徴とする空気調和機の室内機。 The indoor unit of the air conditioner according to claim 2 or 3,
A drain pan that receives and discharges drain water generated in the heat exchanger is arranged below the heat exchanger, and the part of the wall body of the bypass air duct is also used as a part of the drain pan. An indoor unit of an air conditioner characterized by the above. 請求項１乃至４のいずれか１つに記載の空気調和機の室内機において、
前記迂回導風路は、前記ダンパから前記第２吹出口に向かう経路中に、前記第２吹出口から遠ざかる向きの経路を含むことを特徴とする空気調和機の室内機。 The indoor unit of the air conditioner according to any one of claims 1 to 4,
The indoor unit of the air conditioner, wherein the bypass air guiding path includes a path in a path from the damper to the second outlet in a direction away from the second outlet. 請求項１乃至５のいずれか１つに記載の空気調和機の室内機において、
前記風向板は複数枚形成され、該複数枚の風向板の内の前記ダンパに近い風向板は、冷房運転時に前記送風ファンから吹き出された空気の一部を前方にガイドし暖房運転時に前記送風ファンから吹き出された空気の一部を前記迂回導風路にガイドすることを特徴とする空気調和機の室内機。

The indoor unit of the air conditioner according to any one of claims 1 to 5,
A plurality of wind direction plates are formed, and the wind direction plate near the damper among the plurality of wind direction plates guides a part of the air blown out from the blower fan in the cooling operation to the forward direction in the heating operation. An indoor unit for an air conditioner, which guides a part of the air blown from a fan to the bypass air duct.

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