JP3596498B2 - Air conditioner and air conditioner with humidification function - Google Patents

Air conditioner and air conditioner with humidification function Download PDF

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Publication number
JP3596498B2
JP3596498B2 JP2001268815A JP2001268815A JP3596498B2 JP 3596498 B2 JP3596498 B2 JP 3596498B2 JP 2001268815 A JP2001268815 A JP 2001268815A JP 2001268815 A JP2001268815 A JP 2001268815A JP 3596498 B2 JP3596498 B2 JP 3596498B2
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air conditioner
voltage drop
humidifying
heater
unit
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JP2003074947A (en
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卓司 得居
裕二 米田
幸正 矢野
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Daikin Industries Ltd
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Daikin Industries Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
    • F24F3/1423—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant with a moving bed of solid desiccants, e.g. a rotary wheel supporting solid desiccants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/10—Rotary wheel
    • F24F2203/1004—Bearings or driving means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/10—Rotary wheel
    • F24F2203/1032—Desiccant wheel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/10—Rotary wheel
    • F24F2203/1056—Rotary wheel comprising a reheater
    • F24F2203/106—Electrical reheater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/10—Rotary wheel
    • F24F2203/1068—Rotary wheel comprising one rotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/10—Rotary wheel
    • F24F2203/1084—Rotary wheel comprising two flow rotor segments

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Description

【０００１】
【発明の属する技術分野】
この発明は、連絡電線により接続された室内ユニットと室外ユニットとを有する空気調和機および加湿機能を有する空気調和機に関する。
【０００２】
【従来の技術および発明が解決しようとする課題】
従来、空気調和機としては、連絡電線により接続された室内ユニットと室外ユニットとを有し、室内ユニット側から連絡電線を介して室外ユニットに電力を供給するものがある。この空気調和機では、室外ユニット内の圧縮機が運転されると、連絡電線に流れる電流が増加し、室外ユニット側で電圧降下が発生する。このとき、室外ユニット内に電圧変動による影響の大きい部品(加湿ユニットのヒータ等)を使っている場合、圧縮機のオンオフに関わらずその機能が保障されるように安全率を大きくとって設計する必要があり、その部品の機能を十分に活用できなくなる。例えば、加湿ユニットのヒータの場合、電圧降下しても加湿量を確保できる出力のヒータを使う必要があり、そのようなヒータを用いると、電圧降下しないときは、逆に消費電力が増大したり、ヒータが温度上昇し過ぎたりするという問題がある。
【０００３】
そこで、この発明の目的は、電圧降下に影響されることなく安定した動作ができると共に、消費電力を低減できる空気調和機および加湿機能を有する空気調和機を提供することにある。
【０００４】
【課題を解決するための手段】
上記目的を達成するため、請求項１の空気調和機は、連絡電線を介して接続された室内ユニットと室外ユニットとを有する空気調和機において、上記連絡電線の長さに基づいて、上記連絡電線による電圧降下量を推定する電圧降下推定手段と、上記室内ユニットから上記連絡電線を介して電力供給されるアクチュエータと、上記電圧降下推定手段により推定された電圧降下量の大小に応じて入力電力が大小になるように、上記アクチュエータの入力電力を制御する入力電力制御手段とを備えたことを特徴としている。
【０００５】
上記請求項１の空気調和機によれば、上記連絡電線長に基づいて連絡電線による電圧降下量を電圧降下推定手段により推定し、推定された電圧降下量の大小に応じて入力電力が大小になるように、入力電力制御手段によりアクチュエータの入力電力を制御することによって、電圧降下に影響されることなく安定したアクチュエータ動作が可能となり、それによって消費電力の増大も抑えることができる。
【０００６】
また、請求項２の空気調和機は、請求項１の空気調和機において、上記電圧降下推定手段は、上記連絡電線長に相当する配管長に基づいて電圧降下量を推定することを特徴としている。
【０００７】
上記請求項２の空気調和機によれば、上記電圧降下推定手段により連絡電線長に相当する配管長に基づいて電圧降下量を推定するので、配管長が設定されていれば連絡電線長を設定する必要がない。
【０００８】
また、請求項３の空気調和機は、請求項１または２の空気調和機において、上記電圧降下推定手段は、圧縮機のオフ時よりもオン時のときの電圧降下量が大きくなるようにしたことを特徴としている。
【０００９】
上記請求項３の空気調和機によれば、圧縮機のオフ時よりもオン時の方が上記連絡電線に流れる電流が大きくなって、連絡電線による電圧降下量が大きくなるので、上記電圧降下推定手段は、圧縮機のオフ時よりもオン時のときの電圧降下量が大きくなるようにする。したがって、圧縮機のオンオフに応じた最適な電圧降下量を推定できる。
【００１０】
また、請求項４の空気調和機は、請求項１乃至３のいずれか１つの空気調和機において、上記アクチュエータがヒータであることを特徴としている。
【００１１】
上記請求項４の空気調和機によれば、上記ヒータの入力電力を上記電圧降下推定手段により制御することによって、電圧降下に影響されることなく安定したヒータ動作ができると共に、不要なヒータの温度上昇を抑制して消費電力を低減することができる。
【００１２】
また、請求項５の加湿機能を有する空気調和機は、請求項１乃至４のいずれか１つの空気調和機に加湿ユニットを備えた加湿機能を有する空気調和機であって、上記アクチュエータが上記加湿ユニットに用いられたヒータであることを特徴としている。
【００１３】
上記請求項５の加湿機能を有する空気調和機によれば、上記電圧降下推定手段により推定された電圧降下量に基づいて、上記加湿ユニットのヒータの入力電力を上記入力電力制御手段により制御することによって、電圧降下に影響されることなく安定した加湿動作ができると共に、不要なヒータの温度上昇を抑制して消費電力を低減できる。
【００１４】
【発明の実施の形態】
以下、この発明の空気調和機および加湿機能を有する空気調和機を図示の実施の形態により詳細に説明する。
【００１５】
図１はこの発明の実施の一形態の加湿機能を有する空気調和機の要部のブロック図であり、この空気調和機は、室内ユニット１と、室外ユニット２と、上記室外ユニット２の上部に配置された加湿ユニット３とを備えている。上記室内ユニット１と加湿ユニット３とを連絡電線１０を介して接続している。
【００１６】
また、図２は図１の要部のブロック図を示しており、加湿ユニット３は、ケーシング(図示せず)内に円板状の加湿ロータ１１を配置している。この加湿ロータ１１は、シリカゲル，ゼオライト，アルミナ等の吸着材が例えばハニカム状または多孔多粒状に成形されており、軸１１aを中心に加湿ロータ用モータ１２によって回転する。また、上記ケーシング内を仕切り板(図示せず)で仕切って、加湿ロータ１１の各部を経由する吸着通路Ａと脱着通路Ｂとを形成している。上記吸着通路Ａの加湿ロータ１１よりも下流側に吸着ファン１３を設け、その吸着ファン１３を駆動する吸着ファン用モータ１４を設けている。上記加湿ロータ１１は、吸着通路Ａを矢印の方向に流れる空気から吸湿する(水分を吸着する)。
【００１７】
一方、上記脱着通路Ｂの加湿ロータ１１よりも下流側に脱着ファン１５を設け、その脱着ファン１５を駆動する脱着ファン用モータ１６を設けて、空気を矢印に示すように吸引して流すようにしている。上記脱着通路Ｂの加湿ロータ１１よりも上流側の部分にヒータ１７を設けて、このヒータ１７で加熱された空気が加湿ロータ１１を通るときに、加湿ロータ１１によって加湿される(加湿ロータ１１から水分を脱着する)。このように、上記吸着通路Ａの空気から加湿ロータ１１が吸着した水分は、ヒータ１７によって加熱された空気によって脱着されて、この空気が加湿される。そうして加湿された空気は、脱着ファン１５によって加湿ダクト４に送られ、加湿ダクト４を介して室内ユニット１に供給される。
【００１８】
また、図２において、３１は室内ファン(図示せず)等を制御する室内制御部、３２は圧縮機(図示せず)等を制御する室外制御部、３３は上記室外制御部３２からの信号を受けて、加湿運転を制御する加湿運転制御部である。上記室外ユニット２(図１に示す)の室外制御部３２は、室内ユニット１(図１に示す)の室内制御部３１から連絡電線１０を介して電力が供給される。上記室外制御部３２は、連絡電線１０の長さを設定する設定手段３２aを有している。上記加湿運転制御部３３は、加湿ロータ用モータ１２,吸着ファン用モータ１４,脱着ファン用モータ１６およびヒータ１７を制御する。なお、上記加湿運転制御部３３は、室外制御部３２を介してヒータ１７に印加される電圧をオンオフする入力電力制御手段としての半導体スイッチ３３aと、連絡電線長に基づいて電圧降下量を推定する電圧降下推定手段３３bとを有している。
【００１９】
図３は上記空気調和機の処理を説明するフローチャートである。
【００２０】
まず、処理がスタートすると、ステップＳ１で設定手段３２aにより連絡電線長を入力する。
【００２１】
次に、ステップＳ２に進み、圧縮機の運転中か否かを判別して、圧縮機の運転中であると判別すると、ステップＳ３に進み、電圧降下推定手段３３bにより圧縮機使用電流と連絡電線長によって電圧降下量を算出して、ステップＳ５に進む。
【００２２】
一方、ステップＳ２で圧縮機の運転中でないと判別すると、ステップＳ４に進み、連絡電線長によって電圧降下量を算出して、ステップＳ５に進む。
【００２３】
そして、ステップＳ５で算出した電圧降下量によってヒータ出力を調整する。すなわち、図４に示すように、所定の周期で半導体スイッチ３３aを繰り返しオンオフして、上記電圧降下量の大小に応じてオン時間を長短に調整し、半導体スイッチ３３aのオン時に通電し、半導体スイッチ３３aのオフ時に通電をカットすることによって、ヒータ１７への入力電力を調整する。
【００２４】
このように、上記加湿機能を有する空気調和機では、電圧降下に影響されることなく安定したヒータ１７の動作ができると共に、不要なヒータ１７の温度上昇を抑制して消費電力を低減することができる。
【００２５】
また、上記空気調和機では、室内ユニット１と室外ユニット２とを接続する加湿ダクト４と連絡電線１０とは束ねられて、加湿ダクト４の長さと連絡電線１０の長さはほぼ同じになるので、室外制御部３２において、加湿ダクト４の長さをジャンパー等により設定している場合は、その加湿ダクト４の長さを連絡電線長として用いてもよい。これにより、連絡電線長の設定を省略することができる。
【００２６】
上記実施の形態では、アクチュエータとしてヒータ１７を備えた空気調和機について説明したが、アクチュエータはこれに限らず、電圧変動による影響の大きい部品を備えた空気調和機にこの発明を適用してもよい。
【００２７】
また、上記実施の形態では、入力電力制御手段として交流電圧をオンオフする半導体スイッチ３３aを用いたが、入力電力制御手段はこれに限らず、他の構成の入力電力制御手段として用いてもよい。
【００２８】
なお、この発明の空気調和機は、上記実施の形態に限定されるものではなく、他の構成の空気調和機にこの発明を適用してもよいのは勿論である。
【００２９】
【発明の効果】
以上より明らかなように、請求項１の発明の空気調和機は、連絡電線を介して接続された室内ユニットと室外ユニットとを有する空気調和機において、上記連絡電線の長さに基づいて、上記連絡電線による電圧降下量を推定する電圧降下推定手段と、上記室内ユニットから上記連絡電線を介して電力供給されるアクチュエータと、上記電圧降下推定手段により推定された電圧降下量の大小に応じて入力電力が大小になるように、上記アクチュエータの入力電力を制御する入力電力制御手段とを備えたものである。
【００３０】
したがって、請求項１の発明の空気調和機によれば、上記連絡電線長に基づいて電圧降下推定手段により推定された電圧降下量の大小に応じて入力電力が大小になるように、入力電力制御手段によりアクチュエータの入力電力を制御することによって、電圧降下に影響されることなく安定したアクチュエータ動作ができると共に、消費電力を低減することができる。
【００３１】
また、請求項２の発明の空気調和機は、請求項１の空気調和機において、上記電圧降下推定手段により連絡電線長に相当する配管長に基づいて電圧降下量を推定することによって、配管長が設定されていれば連絡電線長を設定する必要がない。
【００３２】
また、請求項３の発明の空気調和機は、請求項１または２の空気調和機において、上記電圧降下推定手段は、圧縮機のオフ時よりもオン時のときの電圧降下量が大きくなるようにすることによって、圧縮機のオンオフに応じた最適な電圧降下量を推定することができる。
【００３３】
また、請求項４の発明の空気調和機は、請求項１乃至３のいずれか１つの空気調和機において、上記アクチュエータであるヒータの入力電力を上記電圧降下推定手段により制御することによって、電圧降下に影響されることなく安定したヒータ動作ができると共に、不要なヒータの温度上昇を抑制して消費電力を低減することができる。
【００３４】
また、請求項５の発明の加湿機能を有する空気調和機は、請求項１乃至４のいずれか１つの空気調和機に加湿ユニットを備えた加湿機能を有する空気調和機であって、上記加湿ユニットに用いられたヒータの入力電力を、上記電圧降下推定手段により推定された電圧降下量に基づいて上記入力電力制御手段により制御することによって、電圧降下に影響されることなく安定した加湿動作を行うことができると共に、不要なヒータの温度上昇を抑制して消費電力を低減することができる。
【図面の簡単な説明】
【図１】図１はこの発明の実施の一形態の加湿機能を有する空気調和機の概略ブロック図である。
【図２】図２は上記空気調和機の要部の構成図である。
【図３】図３は上記空気調和機の動作を説明するフローチャートである。
【図４】図４は上記空気調和機の加湿ユニットのヒータに印加される電圧の波形を示す図である。
【符号の説明】
１…室内ユニット、
２…室外ユニット、
３…加湿ユニット、
４…加湿ダクト、
１０…連絡電線、
１１…加湿ロータ、
１２…加湿ロータ用モータ、
１３…吸着ファン、
１４…吸着ファン用モータ、
１５…脱着ファン、
１６…脱着ファン用モータ、
１７…ヒータ、
３１…室内制御部、
３２…室外制御部、
３２a…設定手段、
３３…加湿運転制御部、
３３a…半導体スイッチ、
３３b…電圧降下推定手段。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an air conditioner having an indoor unit and an outdoor unit connected by a communication wire and an air conditioner having a humidifying function.
[0002]
2. Description of the Related Art
BACKGROUND ART Conventionally, as an air conditioner, there is an air conditioner having an indoor unit and an outdoor unit connected by a communication wire, and supplying electric power from the indoor unit side to the outdoor unit via the communication wire. In this air conditioner, when the compressor in the outdoor unit is operated, the current flowing through the connecting wire increases, and a voltage drop occurs on the outdoor unit side. At this time, if parts that are greatly affected by voltage fluctuations (such as heaters of humidifying units) are used in the outdoor unit, design with a large safety factor so that the function is guaranteed regardless of whether the compressor is on or off. And the function of the component cannot be fully utilized. For example, in the case of the heater of the humidifying unit, it is necessary to use a heater having an output capable of securing the humidification amount even when the voltage drops. If such a heater is used, when the voltage does not drop, power consumption increases. However, there is a problem that the temperature of the heater rises excessively.
[0003]
Therefore, an object of the present invention is to provide an air conditioner and an air conditioner having a humidifying function that can perform stable operation without being affected by a voltage drop and can reduce power consumption.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, an air conditioner according to claim 1 is an air conditioner having an indoor unit and an outdoor unit connected via a connecting wire, wherein the connecting wire is based on a length of the connecting wire. Voltage drop estimating means for estimating the amount of voltage drop by the actuator, an actuator that is supplied with power from the indoor unit via the communication wire, and an input power that depends on the magnitude of the voltage drop amount estimated by the voltage drop estimating means. Input power control means for controlling the input power of the actuator so as to be large or small .
[0005]
According to the air conditioner of the first aspect, the amount of voltage drop by the connecting line is estimated by the voltage drop estimating means based on the length of the connecting line , and the input power is increased or decreased according to the estimated amount of voltage drop. Thus, by controlling the input power of the actuator by the input power control means, it is possible to perform a stable actuator operation without being affected by a voltage drop, thereby suppressing an increase in power consumption.
[0006]
According to a second aspect of the present invention, in the air conditioner of the first aspect, the voltage drop estimating means estimates a voltage drop amount based on a pipe length corresponding to the communication wire length. .
[0007]
According to the air conditioner of the second aspect, since the voltage drop amount is estimated by the voltage drop estimating means based on the pipe length corresponding to the connecting wire length, the connecting wire length is set if the pipe length is set. No need to do.
[0008]
According to a third aspect of the present invention, in the air conditioner of the first or second aspect, the voltage drop estimating means is configured such that a voltage drop when the compressor is on is larger than when the compressor is off. It is characterized by:
[0009]
According to the air conditioner of the third aspect, the current flowing through the connecting wire becomes larger when the compressor is on than when the compressor is off, and the amount of voltage drop by the connecting wire becomes larger. The means is such that the amount of voltage drop when the compressor is on is greater than when the compressor is off. Therefore, it is possible to estimate an optimum voltage drop amount according to the ON / OFF of the compressor.
[0010]
An air conditioner according to a fourth aspect is the air conditioner according to any one of the first to third aspects, wherein the actuator is a heater.
[0011]
According to the air conditioner of the fourth aspect, by controlling the input power of the heater by the voltage drop estimating means, stable heater operation can be performed without being affected by the voltage drop, and unnecessary heater temperature can be controlled. Power consumption can be reduced by suppressing the rise.
[0012]
The air conditioner having a humidifying function according to claim 5 is the air conditioner having a humidifying function provided with a humidifying unit in any one of claims 1 to 4, wherein the actuator is provided with the humidifying function. The heater is used for the unit.
[0013]
According to the air conditioner having a humidifying function of the fifth aspect, the input power of the heater of the humidifying unit is controlled by the input power control means based on the voltage drop amount estimated by the voltage drop estimating means. Accordingly, a stable humidifying operation can be performed without being affected by a voltage drop, and unnecessary power increase can be suppressed to reduce power consumption.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an air conditioner and an air conditioner having a humidifying function of the present invention will be described in detail with reference to the illustrated embodiments.
[0015]
FIG. 1 is a block diagram of a main part of an air conditioner having a humidifying function according to an embodiment of the present invention. The air conditioner includes an indoor unit 1, an outdoor unit 2, and an upper part of the outdoor unit 2. And a humidifying unit 3 arranged. The indoor unit 1 and the humidifying unit 3 are connected via a communication wire 10.
[0016]
FIG. 2 is a block diagram of a main part of FIG. 1, and the humidifying unit 3 has a disk-shaped humidifying rotor 11 disposed in a casing (not shown). The humidifying rotor 11 is formed of an adsorbent such as silica gel, zeolite, alumina or the like into, for example, a honeycomb shape or a multi-porous shape, and is rotated by a humidifying rotor motor 12 about a shaft 11a. Further, the inside of the casing is partitioned by a partition plate (not shown) to form an adsorption passage A and a desorption passage B passing through each part of the humidification rotor 11. A suction fan 13 is provided downstream of the humidification rotor 11 in the suction passage A, and a suction fan motor 14 for driving the suction fan 13 is provided. The humidifying rotor 11 absorbs moisture (adsorbs moisture) from the air flowing in the suction passage A in the direction of the arrow.
[0017]
On the other hand, a desorption fan 15 is provided downstream of the humidification rotor 11 in the desorption passage B, and a desorption fan motor 16 for driving the desorption fan 15 is provided to suck and flow air as shown by the arrow. ing. A heater 17 is provided in a portion of the desorption passage B upstream of the humidifying rotor 11, and when the air heated by the heater 17 passes through the humidifying rotor 11, the air is humidified by the humidifying rotor 11 (from the humidifying rotor 11). Desorb water). In this way, the moisture adsorbed by the humidifying rotor 11 from the air in the adsorption passage A is desorbed by the air heated by the heater 17, and the air is humidified. The humidified air is sent to the humidification duct 4 by the desorption fan 15 and supplied to the indoor unit 1 via the humidification duct 4.
[0018]
In FIG. 2, reference numeral 31 denotes an indoor control unit that controls an indoor fan (not shown) and the like, 32 denotes an outdoor control unit that controls a compressor (not shown) and the like, and 33 denotes a signal from the outdoor control unit 32. The humidifying operation control unit receives the request and controls the humidifying operation. Electric power is supplied to the outdoor control unit 32 of the outdoor unit 2 (shown in FIG. 1) from the indoor control unit 31 of the indoor unit 1 (shown in FIG. 1) via the communication wire 10. The outdoor control unit 32 has a setting unit 32a for setting the length of the communication wire 10. The humidification operation control unit 33 controls the humidification rotor motor 12, the suction fan motor 14, the desorption fan motor 16, and the heater 17. The humidification operation control unit 33 estimates the voltage drop amount based on the semiconductor switch 33a as input power control means for turning on and off the voltage applied to the heater 17 via the outdoor control unit 32, and the connecting wire length. And a voltage drop estimating means 33b.
[0019]
FIG. 3 is a flowchart illustrating the processing of the air conditioner.
[0020]
First, when the process is started, the connecting wire length is input by the setting means 32a in step S1.
[0021]
Next, the process proceeds to step S2, where it is determined whether or not the compressor is operating, and if it is determined that the compressor is operating, the process proceeds to step S3, where the voltage drop estimating means 33b uses the compressor current and the communication line. The amount of voltage drop is calculated based on the length, and the process proceeds to step S5.
[0022]
On the other hand, if it is determined in step S2 that the compressor is not operating, the process proceeds to step S4, where the voltage drop amount is calculated based on the connecting wire length, and the process proceeds to step S5.
[0023]
Then, the heater output is adjusted based on the voltage drop amount calculated in step S5. That is, as shown in FIG. 4, the semiconductor switch 33a is repeatedly turned on and off at a predetermined cycle, the on time is adjusted to be longer and shorter according to the magnitude of the voltage drop, and the semiconductor switch 33a is energized when it is turned on. The input power to the heater 17 is adjusted by cutting off the power supply when the switch 33a is turned off.
[0024]
As described above, in the air conditioner having the humidifying function, the heater 17 can operate stably without being affected by the voltage drop, and the temperature rise of the unnecessary heater 17 can be suppressed to reduce the power consumption. it can.
[0025]
Further, in the air conditioner, the humidification duct 4 connecting the indoor unit 1 and the outdoor unit 2 and the connection wire 10 are bundled, and the length of the humidification duct 4 and the length of the connection wire 10 are substantially the same. When the length of the humidifying duct 4 is set by a jumper or the like in the outdoor control unit 32, the length of the humidifying duct 4 may be used as the length of the connecting wire. This makes it possible to omit the setting of the communication wire length.
[0026]
In the above embodiment, the air conditioner including the heater 17 as the actuator has been described. However, the present invention is not limited to the actuator, and the present invention may be applied to an air conditioner including a component that is greatly affected by voltage fluctuation. .
[0027]
Further, in the above-described embodiment, the semiconductor switch 33a for turning on and off the AC voltage is used as the input power control means. However, the input power control means is not limited to this, and may be used as another configuration of the input power control means.
[0028]
It should be noted that the air conditioner of the present invention is not limited to the above embodiment, and it goes without saying that the present invention may be applied to an air conditioner of another configuration.
[0029]
【The invention's effect】
As is clear from the above, the air conditioner according to the first aspect of the present invention is an air conditioner having an indoor unit and an outdoor unit connected via a connecting wire, wherein the air conditioner is based on the length of the connecting wire. Voltage drop estimating means for estimating the voltage drop due to the connecting wire, an actuator supplied with power from the indoor unit via the connecting wire, and an input according to the magnitude of the voltage drop estimated by the voltage drop estimating means. Input power control means for controlling the input power of the actuator so that the power becomes large or small .
[0030]
Therefore, according to the air conditioner of the first aspect of the present invention, the input power control is performed such that the input power increases or decreases in accordance with the magnitude of the voltage drop amount estimated by the voltage drop estimating means based on the communication wire length. By controlling the input power of the actuator by the means, stable actuator operation can be performed without being affected by a voltage drop, and power consumption can be reduced.
[0031]
The air conditioner according to the second aspect of the present invention is the air conditioner according to the first aspect, wherein the voltage drop estimating means estimates a voltage drop amount based on a pipe length corresponding to a connecting wire length. If is set, there is no need to set the connection wire length.
[0032]
According to a third aspect of the present invention, there is provided the air conditioner of the first or second aspect, wherein the voltage drop estimating means increases a voltage drop amount when the compressor is on rather than off. By doing so, it is possible to estimate an optimal voltage drop amount according to the ON / OFF of the compressor.
[0033]
The air conditioner according to the invention of claim 4 is the air conditioner according to any one of claims 1 to 3, wherein the voltage drop estimating means controls the input power of the heater serving as the actuator, thereby reducing the voltage drop. The heater operation can be stably performed without being affected by the temperature, and the power consumption can be reduced by suppressing an unnecessary rise in the temperature of the heater.
[0034]
An air conditioner having a humidifying function according to a fifth aspect of the present invention is the air conditioner having a humidifying function provided with the humidifying unit in any one of the first to fourth aspects, wherein the humidifying unit is provided. Is controlled by the input power control means based on the voltage drop amount estimated by the voltage drop estimation means, thereby performing a stable humidifying operation without being affected by the voltage drop. The power consumption can be reduced by suppressing unnecessary temperature rise of the heater.
[Brief description of the drawings]
FIG. 1 is a schematic block diagram of an air conditioner having a humidifying function according to an embodiment of the present invention.
FIG. 2 is a configuration diagram of a main part of the air conditioner.
FIG. 3 is a flowchart illustrating an operation of the air conditioner.
FIG. 4 is a diagram showing a waveform of a voltage applied to a heater of a humidifying unit of the air conditioner.
[Explanation of symbols]
1. Indoor unit,
2 ... Outdoor unit,
3. Humidification unit
4: Humidification duct,
10 ... connecting wires,
11 ... humidifying rotor,
12 ... Moisturizing rotor motor,
13 ... Suction fan,
14 ... Motor for suction fan,
15 ... Removable fan,
16 ... Removable fan motor,
17 ... heater,
31 ... indoor control unit,
32 ... outdoor control unit,
32a: setting means,
33 ... humidification operation control unit
33a ... Semiconductor switch,
33b: Voltage drop estimating means.

Claims (5)

連絡電線(１０)を介して接続された室内ユニット(１)と室外ユニット(２)とを有する空気調和機において、
上記連絡電線(１０)の長さに基づいて、上記連絡電線(１０)による電圧降下量を推定する電圧降下推定手段(３３b)と、
上記室内ユニット(１)から上記連絡電線(１０)を介して電力供給されるアクチュエータと、
上記電圧降下推定手段(３３b)により推定された電圧降下量の大小に応じて入力電力が大小になるように、上記アクチュエータの入力電力を制御する入力電力制御手段(３３a)とを備えたことを特徴とする空気調和機。In an air conditioner having an indoor unit (1) and an outdoor unit (2) connected via a communication wire (10),
Voltage drop estimating means (33b) for estimating the amount of voltage drop due to the connection wire (10) based on the length of the connection wire (10);
An actuator supplied with power from the indoor unit (1) via the connection wire (10),
Input power control means (33a) for controlling the input power of the actuator so that the input power increases or decreases according to the magnitude of the voltage drop amount estimated by the voltage drop estimating means (33b). A characteristic air conditioner. 請求項１に記載の空気調和機において、
上記電圧降下推定手段(３３b)は、上記連絡電線長に相当する配管長に基づいて電圧降下量を推定することを特徴とする空気調和機。The air conditioner according to claim 1,
The air conditioner, wherein the voltage drop estimating means (33b) estimates a voltage drop amount based on a pipe length corresponding to the connecting wire length. 請求項１または２に記載の空気調和機において、
上記電圧降下推定手段(３３b)は、圧縮機のオフ時よりもオン時のときの電圧降下量が大きくなるようにしたことを特徴とする空気調和機。The air conditioner according to claim 1 or 2,
An air conditioner characterized in that the voltage drop estimating means (33b) has a larger voltage drop when the compressor is on than when it is off. 請求項１乃至３のいずれか１つに記載の空気調和機において、
上記アクチュエータがヒータ(１７)であることを特徴とする空気調和機。The air conditioner according to any one of claims 1 to 3,
The air conditioner wherein the actuator is a heater (17). 請求項１乃至４のいずれか１つに記載の空気調和機に加湿ユニット(３)を備えた加湿機能を有する空気調和機であって、
上記アクチュエータが上記加湿ユニット(３)に用いられたヒータ(１７)であることを特徴とする加湿機能を有する空気調和機。An air conditioner having a humidifying function provided with the humidifying unit (3) in the air conditioner according to any one of claims 1 to 4,
An air conditioner having a humidifying function, wherein the actuator is a heater (17) used in the humidifying unit (3).
JP2001268815A 2001-09-05 2001-09-05 Air conditioner and air conditioner with humidification function Expired - Fee Related JP3596498B2 (en)

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