JP4302962B2 - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
JP4302962B2
JP4302962B2 JP2002318548A JP2002318548A JP4302962B2 JP 4302962 B2 JP4302962 B2 JP 4302962B2 JP 2002318548 A JP2002318548 A JP 2002318548A JP 2002318548 A JP2002318548 A JP 2002318548A JP 4302962 B2 JP4302962 B2 JP 4302962B2
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JP
Japan
Prior art keywords
air
rotational speed
indoor
blown
target rotational
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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JP2002318548A
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Japanese (ja)
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JP2004150761A (en
Inventor
英晴 海野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Toshiba Carrier Corp
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Sanyo Electric Co Ltd
Toshiba Carrier Corp
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Priority to JP2002318548A priority Critical patent/JP4302962B2/en
Priority to ITTO20030847 priority patent/ITTO20030847A1/en
Priority to CN 200310104656 priority patent/CN1226563C/en
Publication of JP2004150761A publication Critical patent/JP2004150761A/en
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Publication of JP4302962B2 publication Critical patent/JP4302962B2/en
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  • Duct Arrangements (AREA)
  • Air-Flow Control Members (AREA)

Description

【0001】
【発明の属する技術分野】
この発明は、天井取付形の空気調和機に関する。
【0002】
【従来の技術】
天井取付形の空気調和機は、天井面に埋込み状態で取付けられる室内ユニット(天井カセットともいう)を有している。室内ユニットの下面(化粧パネル)は室内空間に臨み、その下面に吸込口および吹出口が形成されている。吸込口は下面の中央部に形成され、吹出口は下面の周縁部に形成されている。
【0003】
このような天井取付形の空気調和機には、吹出風により、室内ユニット周辺の天井面に挨が付着するという、俗にスマッジング現象と呼ばれる問題がある。とくに、天井面が白色系の場合は、スマッジング現象により付着する埃が黒い汚れとなって目立ち、室内の美観を損ねてしまう。
【0004】
スマッジング現象による汚れを防ぐ手段として、吹出口の構造の改良により吹出風を天井面から剥離させるもの(例えば特許文献1)、あるいは吹出口における風向変更板(ルーバ)の形状の改良により天井面への埃の付着を防ぐもの(例えば特許文献2)などが知られている。
【0005】
【特許文献1】
特開平8−94160号公報公報(空気調和機の吹出口)
【0006】
【特許文献2】
特開2001−254998号公報(空気調和機の吹出口)
【0007】
【発明が解決しようとする課題】
上記2つの例は、いずれもスマッジング現象を防ぐことができるが、そのためには構造や形状の改良が必要である。この改良については、他の制約や条件により、不可能な場合がある。
【0008】
仮に、構造や形状の改良が可能であっても、吹出風の風量により、結局はスマッジング現象が生じてしまうことがある。なお、従来より、吹出風の風量は、使用者の操作により設定されたり、室温と設定温度との差によって何段階にも設定される。これら様々に設定される風量のすべてにおいてスマッジング現象を防ぐことは、非常に困難であった。
【0009】
この発明は、上記の事情を考慮したもので、構造や形状の改良を要することなくスマッジング現象を確実に防ぐことができる空気調和機を提供することを目的とする。
【0010】
【発明が解決しようとする課題】
請求項1に係る発明の空気調和機は、吹出風の方向が可変の天井取付形の室内ユニットと、吹出風の方向を水平方向から真下方向の範囲で自由に設定でき、吹出風の方向が天井面に近いほど、吹出風の風量の上限を低く設定する制御手段と、を備える。
【0011】
請求項に係る発明の空気調和機は、吹出風を揺れ動かす機能を有する天井取付形の室内ユニットと、吹出風のスイング範囲を水平方向から真下方向の範囲で設定でき、スイング時には、吹出風の方向が水平方向とならないようにし、吹出風の風量が大きいほど、上記スイング範囲を真下方向に寄せる形で縮小させる制御手段と、を備える。
【0012】
【発明の実施の形態】
以下、この発明の一実施形態について図面を参照して説明する。図1は本発明の空気調和機における室内ユニットおよびその取付け状態を示している。
【0013】
1は天井面で、その天井面1に天井取付形の室内ユニット2が埋込み状態で取付けられている。室内ユニット2の下面(化粧パネル)2aは室内空間に臨み、その下面2aの中央部に吸込口3が形成され、下面2aの周縁部に4つの吹出口4が形成されている。
【0014】
室内ユニット2内には、吸込口3と対応する位置に室内ファン5が設けられ、その室内ファン5を囲む状態に室内熱交換器6が配設されている。この室内熱交換器6から上記各吹出口4にかけて通風路が形成され、それぞれの通風路に風向調節板いわゆるルーバ7が回動自在に設けられている。これらルーバ7は、互いに連動して互いに同じ回動角度に設定される。なお、吸込口3と室内ファン5との間に室内温度センサ8が配設されている。
【0015】
室内ファン5が動作すると、室内空間の空気が吸込口3を通して室内ユニット2内に吸込まれる。この吸込まれた空気は室内熱交換器6での熱交換によって冷気または暖気となり、その冷気または暖気が各吹出口4から室内空間に向け吹出される。
【0016】
吹出方向については、各ルーバ7により、天井面1に近い横方向(水平方向ともいう)Aから真下方向Eの範囲で自由に可変設定することができる。また、ルーバ7の往復回動の繰り返し、いわゆるルーバスイングにより、吹出風を横方向Aから真下方向Eの範囲で揺れ動かすことができる。
【0017】
なお、横方向Aについては、吹出風量が多い場合に、図2に破線で示すように、天井面1との間に気流の渦が発生し、その渦流の影響で吹出風が天井面1側に偏流し、吹出風が天井面1に沿って流れるというスマッジング現象が発生することが実験により確かめられている。
【0018】
一方、図3は本発明の空気調和機の制御回路を示している。
圧縮機11の冷媒吐出口に四方弁12を介して室外熱交換器13が接続され、その室外熱交換器13に電子膨張弁14を介して上記室内熱交換器6が接続されている。そして、室内熱交換器6に四方弁12を介して圧縮機11の冷媒吸込口が接続されている。こうして、冷房および暖房が可能なヒートポンプ式冷凍サイクルが構成されている。
【0019】
室外熱交換器13の近傍に室外ファン15が設けられている。これら圧縮機11、四方弁12、室外熱交換器13、電子膨張弁14、室外ファン15などにより、室外ユニット10が構成されている。
【0020】
冷房時は、圧縮機11から吐出される冷媒が図示実線矢印の方向に流れ、室外熱交換器13が凝縮器、室内熱交換器6が蒸発器として機能する。暖房時は、四方弁12が切換わることにより、圧縮機11から吐出される冷媒が図示破線矢印の方向に流れ、室内熱交換器6が凝縮器、室外熱交換器13が蒸発器として機能する。
【0021】
20は制御部で、当該空気調和機の全般に制御を行う。この制御部20に、四方弁12、電子膨張弁14、室外ファン15の駆動モータ5M、各ルーバ7を2つずつ駆動する2つの駆動モータ7M、室内温度センサ8、インバータ21、およびリモートコントロール式の操作器(以下、リモコンと略称する)30が接続されている。
【0022】
インバータ21は、商用交流電源22の電圧を整流し、その整流後の直流電圧を制御部20からの指令に応じた周波数の交流電圧に変換し、出力する。この出力が圧縮機11の駆動電力となる。
【0023】
リモコン30は、表示部31、運転/停止釦32、温度設定釦33、風量釦34、ルーバ釦35、ルーバスイング釦36などを備えている。風量釦34の操作により、各吹出口4の吹出風の風量を“弱風”“中風”“強風”“自動風量”など複数のモードに設定することができる。ルーバ釦35の操作により、各ルーバ7の回動位置を調節することができる。ルーバスイング釦36の操作により、ルーバスイング(各ルーバ7が往復回動を繰り返すことによる吹出風の揺れ動き)を設定および解除することができる。
【0024】
制御部20は、主要な機能として次の(1)(2)の手段を備えている。
(1)吹出風の方向が天井面1に近いとき、風量設定釦34による設定にかかわらず、吹出風の風量を制限する制御手段。
【0025】
(2)ルーバスイングの設定時、吹出風の揺れ動きの範囲をその吹出風の風量に応じて制限する制御手段。具体的には、吹出風の方向が天井面1に近い横方向Aとならないように、各ルーバ7のスイング範囲(往復回動の範囲)を制限する。
【0026】
つぎに、上記の構成の作用を図4のフローチャートを参照しながら説明する。
ルーバスイングの非設定時(ステップ101のNO)、ルーバ釦35の操作や運転モード(冷房モード・暖房モード・除湿モード、送風モード等)に応じた角度に各ルーバ7が回動し、各吹出口4から吹出される風の方向がA〜Eの範囲で可変設定される。
【0027】
吹出風の方向がA〜Eのいずれに設定されているかが判定され(ステップ102,103,104)、天井面1にもっとも近い横方向Aであれば(ステップ102のYES)、室内ファン5の目標回転数Fmと設定値faとが比較される(ステップ105)。目標回転数Fmは、風量設定釦34の操作や、設定室内温度センサ8の検知温度と温度設定値との差などに応じて設定される
目標回転数Fmが設定値faより大きければ(ステップ105のYES)、目標回転数Fmが設定値faに制限される(ステップ106)。目標回転数Fmが設定値fa未満であれば(ステップ105のYES)、目標回転数Fmに対する制限はなく、そのときの目標回転数Fmがそのまま維持される(ステップ107)。
【0028】
吹出風の方向が横方向Aより少し下側の斜め下方向Bであれば(ステップ103のYES)、目標回転数Fmと設定値fbとが比較される(ステップ108)。目標回転数Fmが設定値fbより大きければ(ステップ108のYES)、目標回転数Fmが設定値fbに制限される(ステップ109)。目標回転数Fmが設定値fb未満であれば(ステップ108のYES)、目標回転数Fmに対する制限はなく、そのときの目標回転数Fmがそのまま維持される(ステップ107)。
【0029】
吹出風の方向が斜め下方向Bよりさらに下側の斜め下方向Cであれば(ステップ104のYES)、目標回転数Fmと設定値fcとが比較される(ステップ110)。目標回転数Fmが設定値fcより大きければ(ステップ110のYES)、目標回転数Fmが設定値fcに制限される(ステップ111)。目標回転数Fmが設定値fc未満であれば(ステップ110のYES)、目標回転数Fmに対する制限はなく、そのときの目標回転数Fmがそのまま維持される(ステップ107)。
【0030】
吹出風の方向が斜め下方向Cより下側の斜め下方向Dまたは真下方向Eであれば(ステップ104のNO)、目標回転数Fmに対する制限はなく、そのときの目標回転数Fmがそのまま維持される(ステップ107)。
【0031】
そして、室内ファン5の回転数Fが目標回転数Fmとなるよう、室内ファン5の駆動が制御される(ステップ112)。
【0032】
設定値fa,fb,fcにはfa<fb≦fcの関係があり、吹出風の方向が天井面1に近いほど、目標回転数Fmの上限が低く設定される。
【0033】
このように、吹出風の方向が天井面1に近い場合は、風量設定釦34の操作や室内温度センサ8の検知温度にかかわらず、吹出風の風量を制限することにより、従来のような構造や形状の改良を要することなく、図2に破線で示したスマッジング現象を確実に防ぐことができる。
【0034】
冷房時は吹出風の方向が横方向Aに設定されることが多く、暖房時は吹出風の方向が真下方向Eに設定される傾向にあり、その冷房時のスマッジング現象防止と真下吹出しによる快適暖房とを両立することができる。
【0035】
一方、ルーバスイング釦36の操作によってルーバスイングが設定されると、各ルーバ7が往復回動を繰り返し、各吹出口4の吹出風が上下方向に揺れ動きながら室内空間に流れる。
【0036】
このルーバスイング時(ステップ101のYES)、室外ファン5の目標回転数Fmと設定値fb,fcが比較され(ステップ113,114)、その比較結果に応じて、各ルーバ7のスイング範囲が制限される。
たとえば、目標回転数Fmが設定値fb以下の場合は(ステップ113のYES)、各ルーバ7のスイング範囲が方向B−E間に制限される(ステップ115)。目標回転数Fmが設定値fc以下の場合は(ステップ114のYES)、スイング範囲が方向C−E間に制限される(ステップ116)。目標回転数Fmが設定値fcより大きい場合は(ステップ114のNO)、スイング範囲が方向D−E間に制限される(ステップ116)。
【0037】
すなわち、天井面1に近い横方向Aについては、目標回転数Fmにかかわらず、スイング範囲から除外するようにしている。この除外により、スマッジング現象を確実に防ぐことができる。
【0038】
しかも、目標回転数Fmが大きいほど、スイング範囲を真下方向Eに寄せる形で縮小するようにしているので、この点でも、スマッジング現象を確実に防ぐことができる。
【0039】
なお、この発明は上記各実施形態に限定されるものではなく、要旨を変えない範囲で種々変形実施可能である。
【0040】
【発明の効果】
以上述べたようにこの発明によれば、構造や形状の改良を要することなくスマッジング現象生を確実に防ぐことができる空気調和機を提供できる。
【図面の簡単な説明】
【図1】一実施形態の室内ユニットおよびその取付け状態を示す図。
【図2】一実施形態における吹出風とスマッジング現象の関係を説明するための図。
【図3】一実施形態における制御回路のブロック図。
【図4】一実施形態の作用を説明するためのフローチャート。
【符号の説明】
1…天井面、2…室内ユニット、3…吸込口、4…吹出口、5…室内ファン、6…室内熱交換器、7…ルーバ、8…室内温度センサ、10…室外ユニット、11…圧縮機、12…四方弁、13…室外熱交換器、14…電子膨張弁、15…室外ファン、20…制御部、21…インバータ
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ceiling-mounted air conditioner.
[0002]
[Prior art]
A ceiling-mounted air conditioner has an indoor unit (also referred to as a ceiling cassette) that is mounted in a ceiling state. The lower surface (decorative panel) of the indoor unit faces the indoor space, and a suction port and an air outlet are formed on the lower surface. The suction port is formed at the center of the lower surface, and the air outlet is formed at the peripheral edge of the lower surface.
[0003]
Such a ceiling-mounted air conditioner has a problem commonly referred to as a smudge phenomenon, in which dust is attached to the ceiling surface around the indoor unit due to the blowing air. In particular, when the ceiling surface is white, dust adhering due to the smuggling phenomenon becomes noticeable as black dirt, and the indoor aesthetics are impaired.
[0004]
As means for preventing dirt due to smudging phenomenon, the blowout air is separated from the ceiling surface by improving the structure of the air outlet (for example, Patent Document 1), or the shape of the wind direction changing plate (louver) at the air outlet is improved to the ceiling surface A device that prevents the adhesion of dust (for example, Patent Document 2) is known.
[0005]
[Patent Document 1]
JP-A-8-94160 (Air outlet of air conditioner)
[0006]
[Patent Document 2]
JP 2001-254998 A (Air outlet of an air conditioner)
[0007]
[Problems to be solved by the invention]
Both of the above two examples can prevent the smudging phenomenon, but for that purpose, the structure and the shape must be improved. This improvement may not be possible due to other constraints and conditions.
[0008]
Even if the structure and shape can be improved, a smudge phenomenon may eventually occur depending on the amount of blown air. Conventionally, the air volume of the blown air is set by a user's operation, or is set in any number of stages depending on the difference between the room temperature and the set temperature. It has been very difficult to prevent smudging in all of these various air volumes.
[0009]
An object of the present invention is to provide an air conditioner that can reliably prevent the smudge phenomenon without requiring an improvement in structure or shape in consideration of the above circumstances.
[0010]
[Problems to be solved by the invention]
The air conditioner of the invention according to claim 1 is a ceiling-mounted indoor unit in which the direction of the blown air is variable, and the direction of the blown air can be freely set in the range from the horizontal direction to the direction directly below. And a control means for setting the upper limit of the air volume of the blown air lower as it is closer to the ceiling surface.
[0011]
Air conditioner of the invention according to claim 2, an indoor unit of a ceiling mounted type having a function of moving swinging the outlet air, can be set from beneath direction swing range of the air blown from the horizontal direction, at the time of swinging, the outlet air And a control means for reducing the swing range so as to bring the swing range closer to the lower side as the amount of blown air is larger.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows an indoor unit and its attached state in the air conditioner of the present invention.
[0013]
Reference numeral 1 denotes a ceiling surface, and a ceiling-mounted indoor unit 2 is attached to the ceiling surface 1 in an embedded state. The lower surface (decorative panel) 2a of the indoor unit 2 faces the indoor space, the suction port 3 is formed at the center of the lower surface 2a, and the four outlets 4 are formed at the peripheral edge of the lower surface 2a.
[0014]
In the indoor unit 2, an indoor fan 5 is provided at a position corresponding to the suction port 3, and an indoor heat exchanger 6 is disposed so as to surround the indoor fan 5. Ventilation paths are formed from the indoor heat exchanger 6 to the air outlets 4, and wind direction adjusting plates, so-called louvers 7, are rotatably provided in the ventilation paths. These louvers 7 are set at the same rotation angle in conjunction with each other. An indoor temperature sensor 8 is disposed between the suction port 3 and the indoor fan 5.
[0015]
When the indoor fan 5 operates, the air in the indoor space is sucked into the indoor unit 2 through the suction port 3. The sucked air becomes cold air or warm air by heat exchange in the indoor heat exchanger 6, and the cold air or warm air is blown out from each outlet 4 toward the indoor space.
[0016]
The blowing direction can be variably set in a range from a lateral direction (also referred to as a horizontal direction) A close to the ceiling surface 1 to a direct downward direction E by each louver 7. Further, the blowing air can be swung in the range from the lateral direction A to the direct downward direction E by repeating the reciprocating rotation of the louver 7, so-called loubusing.
[0017]
In the lateral direction A, when the amount of blown air is large, as shown by a broken line in FIG. 2, a vortex of an air flow is generated between the ceiling surface 1 and the blown air is blown to the ceiling surface 1 side by the influence of the vortex. It has been confirmed by experiments that a smuggling phenomenon occurs in which the wind drifts along the ceiling surface 1.
[0018]
On the other hand, FIG. 3 shows a control circuit of the air conditioner of the present invention.
An outdoor heat exchanger 13 is connected to the refrigerant discharge port of the compressor 11 via a four-way valve 12, and the indoor heat exchanger 6 is connected to the outdoor heat exchanger 13 via an electronic expansion valve 14. A refrigerant suction port of the compressor 11 is connected to the indoor heat exchanger 6 via a four-way valve 12. Thus, a heat pump refrigeration cycle capable of cooling and heating is configured.
[0019]
An outdoor fan 15 is provided in the vicinity of the outdoor heat exchanger 13. The outdoor unit 10 is constituted by the compressor 11, the four-way valve 12, the outdoor heat exchanger 13, the electronic expansion valve 14, the outdoor fan 15, and the like.
[0020]
During cooling, the refrigerant discharged from the compressor 11 flows in the direction of the solid arrow in the figure, and the outdoor heat exchanger 13 functions as a condenser and the indoor heat exchanger 6 functions as an evaporator. During heating, the four-way valve 12 is switched so that the refrigerant discharged from the compressor 11 flows in the direction of the broken arrow in the figure, the indoor heat exchanger 6 functions as a condenser, and the outdoor heat exchanger 13 functions as an evaporator. .
[0021]
Reference numeral 20 denotes a control unit that controls the entire air conditioner. The control unit 20 includes a four-way valve 12, an electronic expansion valve 14, a driving motor 5M for the outdoor fan 15, two driving motors 7M for driving each louver 7 two by two, an indoor temperature sensor 8, an inverter 21, and a remote control type. Is connected to a controller 30 (hereinafter abbreviated as a remote controller).
[0022]
The inverter 21 rectifies the voltage of the commercial AC power supply 22, converts the rectified DC voltage into an AC voltage having a frequency corresponding to a command from the control unit 20, and outputs the AC voltage. This output becomes the driving power for the compressor 11.
[0023]
The remote controller 30 includes a display unit 31, an operation / stop button 32, a temperature setting button 33, an air volume button 34, a louver button 35, a loubusing button 36, and the like. By operating the air volume button 34, the air volume of the air blown from each outlet 4 can be set to a plurality of modes such as “weak wind”, “medium wind”, “strong wind”, and “automatic air volume”. By operating the louver button 35, the rotational position of each louver 7 can be adjusted. By operating the louvering button 36, louvering (swing motion of the blown air by each louver 7 repeating reciprocating rotation) can be set and canceled.
[0024]
The control unit 20 includes the following means (1) and (2) as main functions.
(1) Control means for limiting the air volume of the blown air when the direction of the blown air is close to the ceiling surface 1 regardless of the setting by the air volume setting button 34.
[0025]
(2) Control means for limiting the range of the swaying motion of the blown air according to the air volume of the blown air when setting the loubusing. Specifically, the swing range (range of reciprocating rotation) of each louver 7 is limited so that the direction of the blowing air does not become the lateral direction A close to the ceiling surface 1.
[0026]
Next, the operation of the above configuration will be described with reference to the flowchart of FIG.
When louvering is not set (NO in step 101), each louver 7 rotates to an angle corresponding to the operation of the louver button 35 and the operation mode (cooling mode / heating mode / dehumidification mode, air blowing mode, etc.). The direction of the wind blown from the outlet 4 is variably set in the range of A to E.
[0027]
It is determined whether the direction of the blown air is set from A to E (steps 102, 103, 104). If the horizontal direction A is closest to the ceiling surface 1 (YES in step 102), the indoor fan 5 The target rotational speed Fm is compared with the set value fa (step 105). The target rotational speed Fm is set if the target rotational speed Fm set according to the operation of the air volume setting button 34 or the difference between the detected temperature of the set indoor temperature sensor 8 and the temperature set value is larger than the set value fa (step 105). YES), the target rotational speed Fm is limited to the set value fa (step 106). If the target rotational speed Fm is less than the set value fa (YES in step 105), there is no restriction on the target rotational speed Fm, and the target rotational speed Fm at that time is maintained as it is (step 107).
[0028]
If the direction of the blowing air is obliquely downward B, which is slightly below the lateral direction A (YES in step 103), the target rotational speed Fm is compared with the set value fb (step 108). If target rotation speed Fm is larger than set value fb (YES in step 108), target rotation speed Fm is limited to set value fb (step 109). If the target rotational speed Fm is less than the set value fb (YES in step 108), there is no restriction on the target rotational speed Fm, and the target rotational speed Fm at that time is maintained as it is (step 107).
[0029]
If the direction of the blown-out wind is obliquely downward C, which is further lower than obliquely downward direction B (YES in step 104), target rotational speed Fm is compared with set value fc (step 110). If target rotation speed Fm is larger than set value fc (YES in step 110), target rotation speed Fm is limited to set value fc (step 111). If the target rotational speed Fm is less than the set value fc (YES in step 110), there is no restriction on the target rotational speed Fm, and the target rotational speed Fm at that time is maintained as it is (step 107).
[0030]
If the direction of the blown air is obliquely downward D or obliquely downward E below the obliquely downward direction C (NO in step 104), there is no restriction on the target rotational speed Fm, and the target rotational speed Fm at that time is maintained as it is. (Step 107).
[0031]
Then, the drive of the indoor fan 5 is controlled so that the rotational speed F of the indoor fan 5 becomes the target rotational speed Fm (step 112).
[0032]
The set values fa, fb, and fc have a relationship of fa <fb ≦ fc, and the upper limit of the target rotational speed Fm is set lower as the direction of the blowing air is closer to the ceiling surface 1.
[0033]
As described above, when the direction of the blown air is close to the ceiling surface 1, the airflow of the blown air is limited regardless of the operation of the air volume setting button 34 or the detected temperature of the indoor temperature sensor 8, thereby providing a conventional structure. The smudge phenomenon shown by the broken line in FIG. 2 can be surely prevented without requiring improvement of the shape.
[0034]
During cooling, the direction of the blown air is often set to the lateral direction A, and during heating, the direction of the blown air tends to be set to the direct downward direction E, which prevents the smudge phenomenon during cooling and provides comfort by blowing directly below. Heating can be achieved at the same time.
[0035]
On the other hand, when louvering is set by operating the louvering button 36, each louver 7 repeats reciprocating rotation, and the air blown from each outlet 4 flows into the indoor space while swaying in the vertical direction.
[0036]
During this loubusing (YES in step 101), the target rotational speed Fm of the outdoor fan 5 is compared with the set values fb and fc (steps 113 and 114), and the swing range of each louver 7 is limited according to the comparison result. Is done.
For example, when the target rotational speed Fm is equal to or less than the set value fb (YES in step 113), the swing range of each louver 7 is limited between directions BE (step 115). When the target rotational speed Fm is equal to or smaller than the set value fc (YES in step 114), the swing range is limited between the directions CE (step 116). When the target rotational speed Fm is larger than the set value fc (NO in step 114), the swing range is limited between the directions DE (step 116).
[0037]
That is, the lateral direction A close to the ceiling surface 1 is excluded from the swing range regardless of the target rotational speed Fm. By this exclusion, the smudge phenomenon can be surely prevented.
[0038]
Moreover, as the target rotational speed Fm is larger, the swing range is reduced so as to approach the direction E directly below, so that in this respect as well, smudging can be reliably prevented.
[0039]
In addition, this invention is not limited to said each embodiment, A various deformation | transformation implementation is possible in the range which does not change a summary.
[0040]
【The invention's effect】
As described above, according to the present invention, it is possible to provide an air conditioner that can reliably prevent the occurrence of smudging without requiring improvement in structure or shape.
[Brief description of the drawings]
FIG. 1 is a diagram showing an indoor unit according to an embodiment and an attached state thereof.
FIG. 2 is a diagram for explaining a relationship between a blowing wind and a smudge phenomenon in one embodiment.
FIG. 3 is a block diagram of a control circuit according to an embodiment.
FIG. 4 is a flowchart for explaining the operation of the embodiment;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Ceiling surface, 2 ... Indoor unit, 3 ... Suction inlet, 4 ... Air outlet, 5 ... Indoor fan, 6 ... Indoor heat exchanger, 7 ... Louver, 8 ... Indoor temperature sensor, 10 ... Outdoor unit, 11 ... Compression 12 ... Four-way valve, 13 ... Outdoor heat exchanger, 14 ... Electronic expansion valve, 15 ... Outdoor fan, 20 ... Controller, 21 ... Inverter

Claims (2)

吹出風の方向が可変の天井取付形の室内ユニットと、
前記吹出風の方向を水平方向から真下方向の範囲で自由に設定でき、
前記吹出風の方向が天井面に近いほど、前記吹出風の風量の上限を低く設定する制御手段と、
を備えたことを特徴とする空気調和機。
A ceiling-mounted indoor unit with variable blowing direction;
The direction of the blowing wind can be freely set in the range from the horizontal direction to the direct downward direction,
Control means for setting the upper limit of the air volume of the blown air lower as the direction of the blown air is closer to the ceiling surface;
An air conditioner characterized by comprising:
吹出風を揺れ動かす機能を有する天井取付形の室内ユニットと、
前記吹出風のスイング範囲を水平方向から真下方向の範囲で設定でき、
スイング時には、吹出風の方向が水平方向とならないようにし、
吹出風の風量が大きいほど、前記スイング範囲を真下方向に寄せる形で縮小させる制御手段と、
を備えたことを特徴とする空気調和機。
A ceiling-mounted indoor unit that has the function of swinging the blowing wind;
The swing range of the blowing wind can be set in the range from the horizontal direction to the downward direction,
When swinging, make sure that the direction of the blowing air does not become horizontal,
Control means for reducing the swing range so as to bring the swing range closer to the lower side as the air volume of the blown air is larger;
An air conditioner characterized by comprising:
JP2002318548A 2002-10-31 2002-10-31 Air conditioner Expired - Lifetime JP4302962B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2002318548A JP4302962B2 (en) 2002-10-31 2002-10-31 Air conditioner
ITTO20030847 ITTO20030847A1 (en) 2002-10-31 2003-10-28 CEILING MOUNTED AIR CONDITIONER.
CN 200310104656 CN1226563C (en) 2002-10-31 2003-10-31 Ceiling type air-conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002318548A JP4302962B2 (en) 2002-10-31 2002-10-31 Air conditioner

Publications (2)

Publication Number Publication Date
JP2004150761A JP2004150761A (en) 2004-05-27
JP4302962B2 true JP4302962B2 (en) 2009-07-29

Family

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Application Number Title Priority Date Filing Date
JP2002318548A Expired - Lifetime JP4302962B2 (en) 2002-10-31 2002-10-31 Air conditioner

Country Status (3)

Country Link
JP (1) JP4302962B2 (en)
CN (1) CN1226563C (en)
IT (1) ITTO20030847A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109425032B (en) * 2017-06-23 2022-02-15 大金工业株式会社 Indoor unit of air conditioner
CN108131812B (en) * 2017-12-05 2021-03-16 广东美的暖通设备有限公司 Air conditioner and air outlet control method and device thereof
CN112229010B (en) * 2020-10-10 2021-12-07 东莞市净诺环境科技股份有限公司 New fan of wall-hanging double-duct maintenance of being convenient for

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JP2004150761A (en) 2004-05-27
ITTO20030847A1 (en) 2004-05-01
CN1501030A (en) 2004-06-02

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