JP3156191B2 - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JP3156191B2 JP3156191B2 JP25835793A JP25835793A JP3156191B2 JP 3156191 B2 JP3156191 B2 JP 3156191B2 JP 25835793 A JP25835793 A JP 25835793A JP 25835793 A JP25835793 A JP 25835793A JP 3156191 B2 JP3156191 B2 JP 3156191B2
- Authority
- JP
- Japan
- Prior art keywords
- variable
- opening
- power consumption
- room temperature
- rotation speed
- Prior art date
- 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 - Fee Related
Links
Landscapes
- Air Conditioning Control Device (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、冷暖房サイクルに係
り、特に圧縮機の回転数制御と膨脹弁の開度制御とを行
うのに好適な空気調和装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling and heating cycle, and more particularly to an air conditioner suitable for controlling the number of revolutions of a compressor and controlling the opening of an expansion valve.
【０００２】[0002]
【従来の技術】従来の空気調和装置においては、特開昭
６３−２５４４６号公報及び特開昭５−１１８６０９号
公報に記載の技術を例として挙げることができる。前者
の従来技術は、圧縮機の回転数を操作して室温を、また
膨張弁の開度を操作して圧縮機の過熱度をそれぞれの設
定値あるいは目標値に制御することに加えて、室内側の
送風機の回転数を操作して、消費電力の最小化を図るこ
とを特徴としている。 2. Description of the Related Art A conventional air conditioner is disclosed in
63-25446 and JP-A-5-118609
The technology described in the gazette can be cited as an example. former
In the prior art, the operating speed of the compressor is controlled to obtain the room temperature,
Operate the expansion valve to set the degree of superheat of the compressor.
In addition to controlling to a fixed or target value,
Operate the fan speed to minimize power consumption.
It is characterized by.
【０００３】[0003]
【発明が解決しようとする課題】従来の空気調和装置に
あっては、制御の直接の目的が室温の設定値及び圧縮機
の過熱度の目標値を遵守することであり、安定して制御
を行なう機能しか有していない。そして、室内側の送風
機の回転数のみを操作して消費電力を最小化しているか
ら、消費電力の最小化には限界がある。すなわち、真に
空気調和装置全体が消費する電力を最小化していない恐
れがあり、省エネルギという観点から不都合な問題点が
あった。 SUMMARY OF THE INVENTION Conventional air conditioners
If so, the direct purpose of the control is to set the room temperature and the compressor.
Is to comply with the target value of superheat
It has only the function of performing And the indoor air blow
The power consumption is minimized by operating only the rotation speed of the machine
Therefore, there is a limit to minimizing power consumption. That is, truly
The fear that the power consumed by the entire air conditioner has not been minimized
Disadvantages from the viewpoint of energy saving
there were.
【０００４】本発明の目的は、消費電力もしくは成績係
数を直接制御することができる制御手段を備えた空気調
和装置を提供することにある。 [0004] It is an object of the present invention to reduce power consumption or performance.
Air conditioner with control means that can directly control the number
It is to provide a sum device.
【０００５】[0005]
【課題を解決するための手段】前記の目的を達成するた
め、本発明に係る空気調和装置は、回転数を可変とした
能力可変圧縮機と室外ファンを付設した室外熱交換器と
を有する室外機と、開度を可変とした流量可変膨脹弁と
室内ファンを付設した室内熱交換器とを有する室内機
と、室内機及び室外機を順次接続して冷暖房サイクルを
形成し少なくとも一つの機器の消費電力を制御する制御
手段とを備えてなる空気調和装置において、制御手段
は、能力可変圧縮機の吐出温度又は吐出過熱度の目標値
を決定する機構と、吐出温度又は吐出過熱度の目標値と
検出された吐出温度又は吐出過熱度との偏差が小さくな
るように流量可変膨脹弁の開度を演算する第１の演算機
構と、第１の演算機構の出力に応じて流量可変膨脹弁の
開度を制御する開度制御器と、室温の目標値を設定する
室温設定器と、設定された室温と検出された室温との偏
差が小さくなるように能力可変圧縮機の回転数を演算す
る第２の演算機構と、第２の演算機構の出力に応じて能
力可変圧縮機の回転数を制御する回転数制御器と、それ
ぞれの演算により決められた開度及び回転数をそれぞれ
の偏差が所定の範囲内でかつ消費電力が最小値となるよ
うに補正する第３の演算機構とを具備している構成とす
る。Means for Solving the Problems To achieve the above object, an air conditioner according to the present invention comprises an outdoor heat exchanger having a variable capacity compressor having a variable number of revolutions and an outdoor heat exchanger provided with an outdoor fan. Unit, an indoor unit having an indoor heat exchanger provided with an indoor fan with a variable flow rate expansion valve having a variable opening, and an indoor unit and an outdoor unit connected in order to form a cooling / heating cycle and at least one of the units In an air conditioner including control means for controlling power consumption, the control means determines a discharge temperature or a discharge superheat target value of the variable capacity compressor, and a discharge temperature or discharge superheat target value. A first calculating mechanism for calculating the opening of the variable flow rate expansion valve so that the deviation from the detected discharge temperature or the degree of superheating is reduced, and a variable flow rate expansion valve according to the output of the first calculating mechanism. Opening system to control opening A room temperature setter for setting a target value of the room temperature, a second calculating mechanism for calculating the rotation speed of the variable capacity compressor so as to reduce a deviation between the set room temperature and the detected room temperature, A rotational speed controller for controlling the rotational speed of the variable capacity compressor in accordance with the output of the arithmetic unit 2, and an opening degree and a rotational speed determined by the respective arithmetic operations, each of which has a deviation within a predetermined range and power consumption. And a third operation mechanism that corrects the value so as to be a minimum value.
【０００６】そして回転数を可変とした能力可変圧縮機
と室外ファンを付設した室外熱交換器とを有する室外機
と、開度を可変とした流量可変膨脹弁と室内ファンを付
設した室内熱交換器とを有する室内機と、室内機及び室
外機を順次接続して冷暖房サイクルを形成し少なくとも
一つの機器の消費電力を制御する制御手段とを備えてな
る空気調和装置において、制御手段は、能力可変圧縮機
の吸入湿り度又は吸入過熱度の目標値を決定する機構
と、吸入湿り度又は吸入過熱度の目標値と検出された吸
入湿り度又は吸入過熱度との偏差が小さくなるように流
量可変膨脹弁の開度を演算する第１の演算機構と、第１
の演算機構の出力に応じて流量可変膨脹弁の開度を制御
する開度制御器と、室温の目標値を設定する室温設定器
と、設定された室温と検出された室温との偏差が小さく
なるように能力可変圧縮機の回転数を演算する第２の演
算機構と、第２の演算機構の出力に応じて能力可変圧縮
機の回転数を制御する回転数制御器と、それぞれの演算
により決められた開度及び回転数をそれぞれの偏差が所
定の範囲内でかつ消費電力が最小値となるように補正す
る第３の演算機構とを具備している構成でもよい。An outdoor unit having a variable capacity compressor having a variable rotation speed and an outdoor heat exchanger provided with an outdoor fan, and an indoor heat exchanger having a variable flow rate expansion valve having a variable opening and an indoor fan are provided. An air conditioner comprising: an indoor unit having an air conditioner; and a control unit that sequentially connects the indoor unit and the outdoor unit to form a cooling / heating cycle and controls power consumption of at least one device. A mechanism for determining a target value of the suction wetness or the suction superheat of the variable compressor, and a flow rate that reduces a deviation between the target value of the suction wetness or the suction superheat and the detected suction wetness or the suction superheat. A first calculating mechanism for calculating the opening of the variable expansion valve;
An opening controller for controlling the opening of the variable flow rate expansion valve in accordance with the output of the arithmetic mechanism, a room temperature setting device for setting a target value of the room temperature, and a small deviation between the set room temperature and the detected room temperature. A second arithmetic mechanism for calculating the rotation speed of the variable capacity compressor, a rotation speed controller for controlling the rotation speed of the variable capacity compressor in accordance with the output of the second calculation mechanism, and A configuration may be provided that includes a third arithmetic mechanism that corrects the determined opening degree and rotation speed so that the respective deviations are within a predetermined range and the power consumption is a minimum value.
【０００７】また第１の演算機構、第２の演算機構及び
第３の演算機構のそれぞれは、デジタルコンピューター
を用いている構成でもよい。[0007] Each of the first, second, and third arithmetic mechanisms may use a digital computer.
【０００８】さらに制御手段は、消費電力が最小値にな
ったことを知らせる手段を有している構成でもよい。[0008] The control means may have a means for notifying that the power consumption has reached a minimum value.
【０００９】そして制御手段は、消費電力に関する第３
の演算機構を実行するか否かの選択を可能とする手段を
有している構成でもよい。[0009] The control means may include a third power-related device.
May be configured to have means for enabling selection of whether or not to execute the arithmetic mechanism.
【００１０】また制御手段は、電力検出器又は電流検出
器により消費電力を監視する手段を有している構成でも
よい。[0010] The control means may have a means for monitoring power consumption by a power detector or a current detector.
【００１１】さらに制御手段は、製品の出荷の際に該製
品の消費電力を評価して合否を判定する手段を有してい
る構成でもよい。Further, the control means may have a means for evaluating the power consumption of the product at the time of shipment of the product and determining whether the product is acceptable or not.
【００１２】そしてインバーター付パッケージエアコン
ディショナーにおいては、前記いずれか一つの空気調和
装置に、少なくともキャピラリ、サブ熱交換器、バイパ
ス、電磁弁及び逆止弁を具備してなる構成とする。In the package air conditioner with an inverter, at least one of the air conditioners is provided with at least a capillary, a sub heat exchanger, a bypass, a solenoid valve, and a check valve.
【００１３】[0013]
【作用】本発明によれば、第１の演算機構により、能力
可変圧縮機の吐出温度もしくは吐出過熱度が目標値とな
るように、流量可変膨脹弁の開度を制御する第１のフィ
ードバック制御系が構成される。また、第２の演算機構
により、室温が設定値になるようにもしくは空調能力が
目標値になるように能力可変圧縮機の回転数を制御する
第２のフィードバック制御系が構成される。さらに第３
の演算機構により、第１及び第２のフィードバック制御
系を生かして、それぞれの偏差が所定範囲から逸脱しな
いという制約条件のもとで、消費電力を小さくする、も
しくは成績係数を大きくする最適化制御系が構成され
る。According to the present invention, the first computing mechanism controls the opening of the variable flow rate expansion valve so that the discharge temperature or discharge superheat of the variable capacity compressor becomes the target value. The system is configured. Further, a second feedback control system that controls the rotation speed of the variable capacity compressor so that the room temperature becomes the set value or the air conditioning capacity becomes the target value is configured by the second arithmetic mechanism. Third
Optimizing control for reducing the power consumption or increasing the coefficient of performance under the constraint that the respective deviations do not deviate from a predetermined range by making use of the first and second feedback control systems The system is configured.
【００１４】[0014]
【実施例】本発明の一実施例を図１を参照しながら説明
する。図１に示すように、回転数を可変とした能力可変
圧縮機１と室外ファン６を付設した室外熱交換器５とを
有する室外機と、開度を可変とした流量可変膨脹弁４と
室内ファン３を付設した室内熱交換器２とを有する室内
機と、室内機及び室外機を順次接続して冷暖房サイクル
を形成し少なくとも一つの機器の消費電力を制御する制
御手段２１とを備えてなる空気調和装置であって、制御
手段２１は、能力可変圧縮機１の吐出温度又は吐出過熱
度の目標値を決定する機構７と、吐出温度又は吐出過熱
度の目標値と検出された吐出温度又は吐出過熱度との偏
差が小さくなるように流量可変膨脹弁４の開度を演算す
る第１の演算機構１０と、第１の演算機構１０の出力に
応じて流量可変膨脹弁４の開度を制御する開度制御器１
１と、室温の目標値を設定する室温設定器１２と、設定
された室温と検出された室温との偏差が小さくなるよう
に能力可変圧縮機１の回転数を演算する第２の演算機構
１５と、第２の演算機構１５の出力に応じて能力可変圧
縮機１の回転数を制御する回転数制御器１６と、それぞ
れの演算により決められた開度及び回転数をそれぞれの
偏差が所定の範囲内でかつ消費電力が最小値となるよう
に補正する第３の演算機構１７とを具備している構成で
ある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIG. As shown in FIG. 1, an outdoor unit having a variable capacity compressor 1 having a variable rotational speed and an outdoor heat exchanger 5 provided with an outdoor fan 6, a variable flow rate expansion valve 4 having a variable opening and an indoor unit An indoor unit having an indoor heat exchanger 2 provided with a fan 3 and a control means 21 for sequentially connecting the indoor unit and the outdoor unit to form a cooling / heating cycle and control power consumption of at least one device. In the air conditioner, the control means 21 includes a mechanism 7 for determining a target value of the discharge temperature or the discharge superheat degree of the variable capacity compressor 1 and a discharge temperature or a discharge temperature detected as the target value of the discharge temperature or discharge superheat degree. A first calculating mechanism for calculating an opening of the variable flow rate expansion valve so as to reduce a deviation from the discharge superheat degree; and an opening of the variable flow rate expansion valve according to an output of the first calculating mechanism. Opening controller 1 to control
1, a room temperature setting unit 12 for setting a target value of the room temperature, and a second calculation mechanism 15 for calculating the rotation speed of the variable capacity compressor 1 so that the deviation between the set room temperature and the detected room temperature is reduced. A rotation speed controller 16 for controlling the rotation speed of the variable capacity compressor 1 in accordance with the output of the second calculation mechanism 15; And a third arithmetic mechanism 17 for correcting the power consumption to be within the range and to have the minimum power consumption.
【００１５】そして室内を暖房するときは、図１に示す
矢印のように、能力可変圧縮機（圧縮機）１から吐出さ
れる高温高圧のガス冷媒を室内熱交換器２に送り、ここ
で凝縮させることにより、室内からの低温の吸込空気を
加熱して高温の吐出空気を室内ファン３によって送出し
室内を暖房する。ここで凝縮した液冷媒を室外熱交換器
５に送り、そこで吸熱して蒸発させガス冷媒にするた
め、室外ファン６によって戸外空気を室外熱交換器５に
当てる。ここで蒸発した低温低圧のガス冷媒は、再び四
方弁２２及びアキュムレータ２３を経由して圧縮機１に
戻り、閉じた暖房サイクルを構成する。一方、室内を冷
房するときは、四方弁２２を切換えてこれと逆方向に冷
媒を循環させる。以下の実施例においては、図１に示す
暖房サイクルについて説明するが、冷房サイクルについ
ても全く同様に構成できる。すなわち、冷暖房サイクル
そのものの構成要素及びそれらの連結について、本発明
の精神を逸脱しない範囲で種々の変更あるいは改良が行
い得ることは言うまでもない。When heating the room, a high-temperature and high-pressure gas refrigerant discharged from a variable capacity compressor (compressor) 1 is sent to an indoor heat exchanger 2 as shown by an arrow in FIG. By doing so, the low-temperature suction air from the room is heated and the high-temperature discharge air is sent out by the indoor fan 3 to heat the room. The condensed liquid refrigerant is sent to the outdoor heat exchanger 5, where the outdoor air is applied to the outdoor heat exchanger 5 by the outdoor fan 6 to absorb heat and evaporate the gas refrigerant. The low-temperature and low-pressure gas refrigerant evaporated here returns to the compressor 1 again via the four-way valve 22 and the accumulator 23, and forms a closed heating cycle. On the other hand, when cooling the room, the four-way valve 22 is switched to circulate the refrigerant in the opposite direction. In the following embodiment, the heating cycle shown in FIG. 1 will be described, but the cooling cycle can be configured in exactly the same manner. That is, it goes without saying that various changes or improvements can be made to the components of the cooling / heating cycle itself and the connection thereof without departing from the spirit of the present invention.
【００１６】図１に示す冷暖房サイクルに対して、圧縮
機の吐出温度もしくは吐出過熱度を流量可変膨脹弁（膨
脹弁）４の開度によって制御する第１のフィードバック
制御系は、吐出温度もしくは吐出過熱度の目標値を決定
する機構７と、圧縮機１の吐出温度もしくは吐出過熱度
を検出する検出器８と、これらの目標値と検出値の偏差
を求める減算器９と、この偏差を小さく、最終的にはゼ
ロにするように膨脹弁４の開度を決定する第１の演算機
構１０と、この演算結果に基づき、例えば目標値が検出
値より大であれば膨脹弁４の開度を大にする等、開度を
調節する開度制御器１１とから構成されている。また、
圧縮機１の吸入湿り度又は吸入過熱度の目標値と検出さ
れた吸入湿り度又は吸入過熱度との偏差が小さくなるよ
うに膨脹弁４の開度を制御してもよい。一方、室内の空
気温度もしくは室内熱交換器２の空調能力を圧縮機１の
回転数によって制御する第２のフィードバック制御系
は、室温の設定値を使用者が手動で入力する室温設定器
１２と、室内熱交換器２への吸込空気温度を検出する温
度検出器１３と、これらの設定値と検出値との偏差を求
める減算器１４と、この偏差を小さく、最終的にはゼロ
にするように圧縮機１の回転数を決定する第２の演算機
構１５と、この演算結果に基づいて圧縮機１の回転数を
制御する回転数制御器１６とから構成されている。な
お、室温の設定値と室内の吸込空気温度の検出値との偏
差から、室内熱交換器の空調能力の目標値を決定し、室
内熱交換器２への吸込空気温度と吹出空気温度との差と
室内ファンの風量によって決まる実際の空調能力との偏
差を小さく、最終的にはゼロにするように膨脹弁４の開
度を制御することも可能である。このときは吹出空気温
度を検出する温度検出器を設ける。In the cooling and heating cycle shown in FIG. 1, a first feedback control system for controlling the discharge temperature or discharge superheat degree of the compressor by the opening degree of the variable flow rate expansion valve (expansion valve) 4 is based on the discharge temperature or discharge temperature. A mechanism 7 for determining a target value of the superheat degree, a detector 8 for detecting the discharge temperature or discharge superheat degree of the compressor 1, a subtractor 9 for calculating a deviation between the target value and the detected value, and reducing the deviation. A first arithmetic mechanism 10 for determining the opening of the expansion valve 4 so that the opening of the expansion valve 4 is finally set to zero, and based on the calculation result, for example, if the target value is larger than the detected value, the opening of the expansion valve 4 And the opening degree controller 11 for adjusting the opening degree, for example, by increasing the opening degree. Also,
The opening of the expansion valve 4 may be controlled so that the deviation between the target value of the suction wetness or the suction superheat of the compressor 1 and the detected suction wetness or suction superheat is reduced. On the other hand, the second feedback control system that controls the indoor air temperature or the air conditioning capacity of the indoor heat exchanger 2 by the rotation speed of the compressor 1 includes a room temperature setter 12 for manually inputting a set value of the room temperature by a user. A temperature detector 13 for detecting the temperature of the intake air to the indoor heat exchanger 2, a subtractor 14 for obtaining a deviation between the set value and the detected value, and a method for reducing this deviation to zero finally. A second operation mechanism 15 determines the rotation speed of the compressor 1 and a rotation speed controller 16 that controls the rotation speed of the compressor 1 based on the calculation result. In addition, the target value of the air conditioning capacity of the indoor heat exchanger is determined from the deviation between the set value of the room temperature and the detected value of the indoor intake air temperature, and the difference between the intake air temperature to the indoor heat exchanger 2 and the outlet air temperature is determined. It is also possible to control the degree of opening of the expansion valve 4 so that the difference between the difference and the actual air-conditioning capacity determined by the air flow of the indoor fan is small, and finally becomes zero. In this case, a temperature detector for detecting the temperature of the blown air is provided.
【００１７】以上に示した第１及び第２の演算機構に
は、比例積分微分演算を基にしたいわゆるＰＩＤ演算に
基づくものが用いられることが多い。また冷暖房サイク
ルは閉じているため、操作量として膨脹弁４の開度のみ
を調整したとしても、これに対する制御量である圧縮機
１の吐出温度もしくは吐出過熱度のみならず、室内熱交
換器２の吸込温度、吸出温度や空調能力も影響を受け
る。また逆に、操作量として圧縮機１の回転数のみを調
整したとしても、これに対する制御量である室内熱交換
器２の吸込温度、吹出温度及び空調能力のみならず、圧
縮機１の吐出温度もしくは吐出過熱度も影響を受ける。
これらの干渉を考慮すると、第１の演算機構と第２の演
算機構とはＰＩＤ演算の他に偏差の大きさや操作量の大
きさ等に関する情報を相互に交換して、これを利用して
予め制御量の干渉を小さくするようにそれぞれの操作量
を補正する演算を付加することが有効である。例えば第
２の演算機構１５の出力より第１の演算機構１０の出力
へ比例ゲインを接続し、比例ゲインの出力により第１の
演算機構１０の出力を補正するようにしてもよい。As the first and second arithmetic mechanisms described above, those based on so-called PID arithmetic based on proportional integral differential arithmetic are often used. Further, since the cooling / heating cycle is closed, even if only the opening degree of the expansion valve 4 is adjusted as an operation amount, not only the discharge temperature or discharge superheat degree of the compressor 1 which is a control amount thereto but also the indoor heat exchanger 2 Suction temperature, suction temperature and air conditioning capacity are also affected. Conversely, even if only the rotation speed of the compressor 1 is adjusted as the operation amount, not only the suction temperature, the blow-out temperature and the air-conditioning capacity of the indoor heat exchanger 2 which are the control amounts but also the discharge temperature of the compressor 1 Alternatively, the discharge superheat degree is also affected.
In consideration of these interferences, the first arithmetic mechanism and the second arithmetic mechanism exchange information regarding the magnitude of the deviation, the magnitude of the operation amount, and the like in addition to the PID operation, and use this information in advance. It is effective to add a calculation for correcting each operation amount so as to reduce the interference of the control amount. For example, a proportional gain may be connected from the output of the second computing mechanism 15 to the output of the first computing mechanism 10, and the output of the first computing mechanism 10 may be corrected by the output of the proportional gain.
【００１８】前記２つのフィードバック制御系によれ
ば、室内及び室外の温度条件の変動によらず、圧縮機の
安定した運転状態の保持と、使用者の室温設定を満足す
る空調環境の達成という制御手段に対する２つの要求仕
様を満すことができるのである。しかし、これら２つの
フィードバック制御系においては、空気調和装置が必要
とする消費電力の大きさについて、何ら関知していな
い。したがって、消費電力が大きい状態で運転している
恐れがある。そこで、消費電力を評価する実験を行った
ところ、２つの要求仕様を満すという制約のもとで、圧
縮機の回転数と膨脹弁の開度の２つの操作量の組合せを
調整すると、消費電力が変化すること、すなわち消費電
力を最小にすることができることが判明した。According to the two feedback control systems, control is performed to maintain a stable operation state of the compressor and to achieve an air-conditioning environment that satisfies the user's room temperature setting regardless of fluctuations in indoor and outdoor temperature conditions. The two required specifications for the means can be satisfied. However, these two feedback control systems have nothing to do with the amount of power consumption required by the air conditioner. Therefore, there is a possibility that the vehicle is operated in a state where power consumption is large. Therefore, an experiment was conducted to evaluate power consumption. As a result, when the combination of the two operation amounts, that is, the rotation speed of the compressor and the opening degree of the expansion valve, was adjusted under the constraint that the two required specifications were satisfied, It has been found that the power can be varied, ie the power consumption can be minimized.
【００１９】図２を参照し、この実験結果に基づいて第
３の演算機構による消費電力の最小化の原理を説明す
る。水平面内には、２つ操作量として圧縮機の回転数と
膨脹弁の開度とを示す座標軸をとる。この面と垂直に、
消費電力を示す座標軸をとる。第１の演算機構により圧
縮機の吐出温度もしくは吐出過熱度の目標値が膨脹弁を
開度ｖｓに制御することにより達成され、同時に第２の
演算機構により、居住者の設定した室温設定値もしくは
これから決まる空調能力の目標値が圧縮機を回転数ｆｓ
に制御することにより達成された定常状態ｓを出発点と
する。このときの消費電力をｗｓとする。この状態を保
持しながら、圧縮機の回転数と膨脹弁の開度をわずかに
調整すると、消費電力が小さくなる方向がある。これ
は、同じ圧縮機の吐出温度もしくは吐出過熱度と、室温
もしくは空調能力を実現する圧縮機の回転数と膨張弁の
開度との組合せは複数個存在し、しかもそれらの消費電
力に差があるという空気調和機の基本的特性に起因す
る。このうち、圧縮機の吐出温度もしくは吐出過熱度の
設定値及び室温の設定値から所定の範囲以上はずれない
という要求仕様を満足している状態、すなわち、それぞ
れの設定値と検出値との偏差が所定範囲から逸脱しない
範囲Ｃ内において、消費電力が最小になる状態ａが必ず
存在する。状態ｂのように所定範囲Ｃを逸脱すると圧縮
機に過度の負荷が掛かる、または暖房がきき過ぎる等の
不具合を生じることになる。Referring to FIG. 2, the principle of minimizing power consumption by the third arithmetic mechanism based on the experimental results will be described. In the horizontal plane, coordinate axes indicating the number of rotations of the compressor and the degree of opening of the expansion valve are taken as two manipulated variables. Perpendicular to this plane,
A coordinate axis indicating power consumption is taken. The target value of the discharge temperature or discharge superheat degree of the compressor is achieved by controlling the expansion valve to the opening degree vs. by the first arithmetic mechanism, and at the same time, by the second arithmetic mechanism, the room temperature set value set by the occupant or The target value of the air-conditioning capacity determined from this is that the compressor rotates at fs
Is a starting point. The power consumption at this time is defined as ws. If the rotation speed of the compressor and the opening of the expansion valve are slightly adjusted while maintaining this state, there is a direction in which the power consumption is reduced. This is because there are a plurality of combinations of the discharge temperature or the degree of superheat of the same compressor, the room temperature or the number of rotations of the compressor and the degree of opening of the expansion valve for realizing the air-conditioning capacity, and the power consumption is different. This is due to the basic characteristics of the air conditioner. Among them, the condition that the required specification that the set value of the discharge temperature or the discharge superheat degree of the compressor and the set value of the room temperature do not deviate more than a predetermined range is satisfied, that is, the deviation between each set value and the detected value is Within the range C that does not deviate from the predetermined range, there always exists a state a in which the power consumption is minimized. If the value deviates from the predetermined range C as in the state b, an excessive load is applied to the compressor or a problem such as excessive heating is caused.
【００２０】そこで、第３の演算機構では、圧縮機の吐
出温度もしくは吐出過熱度の目標値と吐出温度もしくは
吐出過熱度の検出値と第１の演算機構によって決定され
た膨脹弁の開度と、室温の設定値もしくは室調能力の目
標値と室温の検出値もしくは実際の空調能力と第２の演
算機構によって決定された圧縮機の回転数等の２つのフ
ィードバック制御系の情報に加えて、圧縮機の消費する
電力を検出する図１に示す電力検出器１８もしくは電圧
が一定のものであれば電流検出器１８の検出値を入力す
る。そして、消費電力が最少になるような圧縮機１の回
転数と膨脹弁４の開度との組み合せを演算し、加算器１
９及び加算器２０によってこれらの２つの操作量を補正
する。Therefore, in the third arithmetic mechanism, the target value of the discharge temperature or the discharge superheat degree of the compressor, the detected value of the discharge temperature or the discharge superheat degree, and the opening degree of the expansion valve determined by the first arithmetic mechanism are calculated. In addition to the two feedback control system information such as the set value of the room temperature or the target value of the room control capacity and the detected value of the room temperature or the actual air conditioning capacity and the number of rotations of the compressor determined by the second arithmetic mechanism, The power detector 18 shown in FIG. 1 for detecting the power consumed by the compressor or the detection value of the current detector 18 is input if the voltage is constant. Then, a combination of the rotation speed of the compressor 1 and the opening degree of the expansion valve 4 that minimizes the power consumption is calculated, and the adder 1
9 and the adder 20 correct these two operation amounts.
【００２１】図３は、図２に示す原理に基づいて実際に
２つの操作量を消費電力が最小になるように決める第３
の演算機構の演算手順の一例を示すフローチャートであ
る。この演算手順は、空気調和装置の状態ならびに消費
電力に関する正しい判定を行なうため、圧縮機の吐出温
度もしくは吐出過熱度に関する第１のフィードバック制
御と室温もしくは空調能力に関する第２のフィードバッ
ク制御のそれぞれが完了し、空気調和装置が安定した定
常状態において起動される。これは、空気調和装置の主
たる制御量である圧縮機の吐出温度もしくは吐出過熱度
と室温もしくは空調能力の変化率すなわち所定時間前後
の変化の大きさが所定量以下になったことにより判定で
きる。この変化の大きさは、必ずしもゼロである必要は
ない。まず、この状態において、所定のルールに従っ
て、圧縮機の回転数と膨脹弁の開度の一方もしくは両方
をそれぞれ所定量だけ補正し変更する。そして、その後
に所定時間だけ待ち時間を設けて、空気調和装置が再び
安定した定常状態になるのを待つ。そして空気調和装置
が定常状態になった際に、圧縮機の吐出温度もしくは吐
出過熱度が目標値からはずれていないか、そして室温が
設定値からはずれていないかもしくは室調能力が目標値
からはずれていないかを判定する。ただし本来これらの
偏差が全くゼロになるように制御することは不可能なも
のでありまた必要もなく、それぞれ所定の偏差の中に収
まっていればよい。FIG. 3 shows a third example in which two operation amounts are determined based on the principle shown in FIG. 2 so that power consumption is minimized.
6 is a flowchart showing an example of the calculation procedure of the calculation mechanism of FIG. In this calculation procedure, the first feedback control relating to the discharge temperature or the discharge superheat degree of the compressor and the second feedback control relating to the room temperature or the air conditioning capacity are completed in order to make a correct determination regarding the state of the air conditioner and the power consumption. Then, the air conditioner is started in a stable steady state. This can be determined by the fact that the change rate of the discharge temperature or discharge superheat degree of the compressor, which is the main control amount of the air conditioner, and the room temperature or the air conditioning capacity, that is, the magnitude of the change before and after the predetermined time, becomes equal to or less than the predetermined amount. The magnitude of this change need not necessarily be zero. First, in this state, one or both of the rotational speed of the compressor and the opening degree of the expansion valve are corrected and changed by a predetermined amount in accordance with a predetermined rule. After that, a waiting time is provided only for a predetermined time, and the air conditioner waits until the air conditioner returns to a stable steady state. When the air conditioner enters a steady state, the discharge temperature or discharge superheat of the compressor does not deviate from the target value, and the room temperature does not deviate from the set value, or the room conditioning ability deviates from the target value. Is not determined. However, it is not possible or necessary to control such deviations to be completely zero, and it is sufficient if each deviation falls within a predetermined deviation.
【００２２】それぞれの制御量が目標値もしくは設定値
から所定の偏差内に入っている場合にのみ、２つの操作
量である圧縮機の回転数と膨脹弁の開度を変更する前に
比べて消費電力が低下したかどうかを評価する。消費電
力が減っている場合は、先の２つの操作量の変更が有効
であったものと判断できる。そしてこの次は、先の２つ
の操作量の変更内容と同じ内容の操作量の変更になるよ
うなルールを採用することが有力であり、消費電力が最
小になる状態に同じ方向からアプローチすることにより
消費電力が最小になる状態を時間的に効率よく求められ
る。また消費電力が減っていない場合は、この操作量の
変更内容が有効ではないので、元の操作量に戻す必要が
ある。そして、後述するように所定のルールに従った操
作量の変更手順が完了した場合はこれ以上の消費電力の
低減は不可能であり、その状態が消費電力が最小の状態
であると判断できる。しかし、所定のルールに従った操
作量の変更手順が完了していない際は、その次のルール
に従って、２つの操作量を変更して、さらに消費電力が
少なくなるような状態を求める手順を続行する。このと
きは、先の２つの操作量の変更内容とは違った内容の操
作量の変更になるようなルールを採用することが有力で
あり、消費電力が最小になる状態に違った方向からアプ
ローチすることにより洩れなく消費電力が最小になる状
態が求められる。Only when the respective control amounts are within a predetermined deviation from the target value or the set value, the two operation amounts, ie, the rotation speed of the compressor and the opening degree of the expansion valve, are compared with those before the change. Evaluate whether the power consumption has decreased. When the power consumption is reduced, it can be determined that the change of the above two operation amounts has been effective. Next, it is effective to adopt a rule that changes the operation amount with the same content as the change contents of the previous two operation amounts, and approach the state where power consumption is minimized from the same direction. As a result, a state in which power consumption is minimized can be efficiently obtained in terms of time. If the power consumption has not decreased, the change in the manipulated variable is not effective, and it is necessary to return to the original manipulated variable. Then, as described later, when the procedure for changing the operation amount according to the predetermined rule is completed, it is impossible to further reduce the power consumption, and it can be determined that the state is the state with the minimum power consumption. However, when the procedure for changing the manipulated variable according to the predetermined rule is not completed, the procedure for changing the two manipulated variables according to the next rule and obtaining a state that further reduces power consumption is continued. I do. In this case, it is effective to adopt a rule that changes the operation amount different from the previous two operation amount changes, and approach from a different direction to minimize the power consumption. Therefore, a state in which power consumption is minimized without leakage is required.
【００２３】図４及び図５は、２つの操作量を変更する
ルールの一例を、図２と同じ水平面の座標を用いて表わ
したものである。図４及び図５に示すように、実線で囲
まれた領域内Ｄ，Ｅは、圧縮機の吐出温度や吐出過熱度
がその目標値に、かつ室温が設定値に、もしくは空調能
力が目標値に所定の精度で制御されている状態を示して
おり、目標値や設定値の変更がなければ、これらの制御
量は常にこの領域内になければならない。すなわち、制
御手段の目的は、この範囲Ｄ，Ｅ内において、消費電力
がより小さい状態となるような２つの操作量の組み合せ
をできるだけ時間的に効率よく求めることである。しか
も、この手順は簡潔で安定な運転状態を保持できるもの
である必要がある。図４は、２つの操作量のうち片方づ
つを順次所定量だけ変更する方法を示している。図４に
示すように、領域Ｄ内にある点ｓは、始めの制御が完了
した出発点とする。このとき操作量は各々ｆｓ，ｖｓで
ある。ここで、まず圧縮機の回転数ｆｓのみを所定量Δ
ｆだけ減少させｆｔとする（矢印Ａ1）。これにより消
費電力が減少した状態ｔになり、しかもこの状態は、図
示のように領域Ｄ内に入っているものとする。もし消費
電力が減少しないか、あるいは図示のように領域Ｄから
はずれた状態になった場合は、膨脹弁の開度ｖｓを所定
量Δｖだけ減少させる方向を試みる（矢印Ｂ1）。次
に、状態ｔにおいて、やはり圧縮機の回転数ｆｔを所定
量Δｆだけ減少させる（矢印Ａ2）。これにより消費電
力が減少しないか、あるいは図示のように領域Ｄからは
ずれた状態になった場合は、元の状態ｔに戻す。このと
き操作量は各々ｆｔ，ｖｓである。そして、次は膨脹弁
の開度ｖｓを、所定量Δｖだけ減少させｖａとする（矢
印Ｂ2）。これにより消費電力が減少した状態ａにな
り、しかもこの状態は図示のように領域Ｄ内に入ってい
るものとする。もし消費電力が減少しないか、あるいは
領域Ｄからはずれた状態になった場合は、やはり元の状
態ｔに戻す。そしてこの状態が、消費電力が最小の状態
であると判定し、このような手順を終了させる。次に状
態ａにおいては、やはり膨脹弁の開度ｖａを所定量Δｖ
だけ減少させる（矢印Ｂ3）。これによって消費電力が
減少しないか、あるいは領域Ｄからはずれた状態になっ
た場合は、やはり元の状態ａに戻す。そして、次に圧縮
機の回転数ｆａを所定量Δｆだけ減少させる（矢印
Ａ3）。これによって消費電力が減少しないか、あるい
は領域Ｄからはずれた状態になった場合は、やはり元の
状態ａに戻す。そして、この状態ａが消費電力が最少の
状態であると判定し、このような手順を終了させる。FIGS. 4 and 5 show an example of a rule for changing the two manipulated variables using the same coordinates on the horizontal plane as in FIG. As shown in FIGS. 4 and 5, D and E in regions surrounded by solid lines indicate that the discharge temperature and discharge superheat of the compressor are the target values, the room temperature is the set value, and the air conditioning capacity is the target value. FIG. 3 shows a state in which the control is performed with a predetermined accuracy. If there is no change in the target value or the set value, these control amounts must always be within this region. In other words, the purpose of the control means is to find a combination of two operation amounts that can reduce power consumption within the ranges D and E as efficiently as possible in time. Moreover, this procedure needs to be able to maintain a simple and stable operating state. FIG. 4 shows a method of sequentially changing one of the two operation amounts by a predetermined amount. As shown in FIG. 4, a point s in the area D is a starting point at which the first control is completed. At this time, the manipulated variables are fs and vs, respectively. Here, first, only the rotational speed fs of the compressor is set to a predetermined amount Δ
It is reduced by f to ft (arrow A 1 ). As a result, the state becomes the state t in which the power consumption is reduced, and this state is assumed to be within the area D as shown in the figure. If the power consumption does not decrease or is out of the region D as shown, an attempt is made to decrease the opening degree vs of the expansion valve by a predetermined amount Δv (arrow B 1 ). Next, in the state t, the rotational speed ft of the compressor is also reduced by the predetermined amount Δf (arrow A 2 ). As a result, if the power consumption does not decrease, or if the state is deviated from the area D as shown, the state is returned to the original state t. At this time, the operation amounts are ft and vs, respectively. Then, the opening degree vs of the expansion valve is reduced by a predetermined amount Δv to be va (arrow B 2 ). As a result, it is assumed that the power consumption is reduced to the state a, and this state is in the area D as shown in the figure . If the power consumption does not decrease or is out of the area D, the state is also returned to the original state t. Then, it is determined that this state is the state where power consumption is the minimum, and such a procedure is terminated. Next, in the state a, the opening degree va of the expansion valve is also set to the predetermined amount Δv
(Arrow B 3 ). As a result, if the power consumption does not decrease or the state is out of the area D, the state is returned to the original state a. Then, the rotational speed fa of the compressor is reduced by a predetermined amount Δf (arrow A 3 ). As a result, if the power consumption does not decrease or the state is out of the area D, the state is returned to the original state a. Then, it is determined that this state a is the state where the power consumption is the minimum, and such a procedure is terminated.
【００２４】図４では、２つの操作量の各々を別個に所
定量だけ変更する手順を示したが、図５に示すように、
２つの操作量を同時に所定量だけ変更する手順も考えら
れる。図５においても、図４と同様の手順で、最初の状
態ｓから出発して消費電力が最少になる状態ａを求める
ことができる。FIG. 4 shows a procedure for separately changing each of the two operation amounts by a predetermined amount. However, as shown in FIG.
A procedure for simultaneously changing the two operation amounts by a predetermined amount is also conceivable. In FIG. 5 as well, a state a in which the power consumption is minimized can be obtained starting from the first state s in the same procedure as in FIG.
【００２５】実際このような手順の詳細は、空気調和装
置の運転試験によって、予め具体的かつ定量的に規定で
きる。さらにこの結果をもとにすると、図６に示すよう
に、 消費電力が最小となる状態を達成できるような２つ
の操作量の組み合せを予め決めて記憶しておき、室温の
設定値と吐出温度の目標値に対応した、圧縮機の回転数
と膨張弁の開度を選ぶことが可能となる。もちろん図６
に示されない状態は、この図６に示される他の値から補
間して求めればよい。このようにすると２つの操作量の
決定を、短時間で行なうことができる。また、図６の内
容を出発点として、次に図４及び図５に示した手順を実
施することも可能であり、この方法は時間的により効率
的に消費電力を最小化できる可能性がある。 Actually, details of such a procedure are described in
By operating test of the device
Wear. Further, based on this result, as shown in FIG.
To minimize the power consumption
The combination of the manipulated variables of
Compressor rotation speed corresponding to set value and discharge temperature target value
And the degree of opening of the expansion valve. Figure 6 of course
The states not shown in FIG. 6 are supplemented from the other values shown in FIG.
You can find it shortly. In this way, the two manipulated variables
The decision can be made in a short time. Also, in FIG.
Starting from the description, the procedure shown in FIGS.
Can be applied, this method is more efficient over time
There is a possibility that power consumption can be minimized.
【００２６】また、この第３の演算機構がなくても、制
御手段本来の２つのフィードバック制御機構を損なわれ
ないので、この消費電力の最小化が不必要もしくは不可
能な場合には、使用者の判断もしくは制御手段自身の判
断によってこれを停止もしくは休止させることができ
る。 Also, without the third arithmetic mechanism, the control
Damage to the original two feedback control mechanisms
No, minimizing power consumption is unnecessary or not possible
If this is possible, the judgment of the user or the control
This can be stopped or paused by interruption
You.
【００２７】なお本発明においては、消費電力を最小化
することを目的として説明したが、その代りに成績係数
（ＣＯＰ）やエネルギ効率を最大化することを評価標と
して用いてもよい。 In the present invention, power consumption is minimized.
Was explained with the aim of doing
(COP) and maximizing energy efficiency
You may use it.
【００２８】これらは、空調出力と消費電力の比で求め
られるので同じことになる。 These are obtained from the ratio of the air conditioning output to the power consumption.
Is the same.
【００２９】図１に示す制御手段２１全体は、ディジタ
ルコンピュータで構成するのが有効であり、いずれの機
能もソフトウエアによって容易に構成できるので、その
方が得策である。また、制御手段２１は、前記の制御内
容を利用することによって、消費電力が最小になったこ
とを外部に知らせる手段、消費電力の演算を実行するか
否かの選択を可能とする手段、電力検出器又は電流検出
器により消費電力を監視する手段及び製品の出荷の際に
その製品の消費電力を評価して合否を判定する手段等を
具備することができる。また、空気調和装置としては、
キャピラリ、サブ熱交換器、バイパス、電磁弁及び逆止
弁を具備してなる構成のインバータ付パッケージエアコ
ンであってもよい。 The entire control means 21 shown in FIG .
It is effective to configure with a computer.
Functions can be easily configured by software.
Is better. In addition, the control means 21
Power consumption has been minimized by using
To inform the outside of the system, whether to execute the power consumption calculation
Means for selecting whether or not, power detector or current detection
Means for monitoring power consumption by a container and when shipping products
Measures such as evaluating the power consumption of the product to make a pass / fail
Can be provided. In addition, as an air conditioner,
Capillary, sub heat exchanger, bypass, solenoid valve and check
Package airco with inverter with valve configuration
May be used.
【００３０】[0030]
【発明の効果】本発明によれば、制御手段に３つの演算
機構を設けて膨張弁の開度と圧縮機の回転数とを制御す
るに際して、消費電力が最小になるような運転状態を自
動的にかつ能率的に実現でき、常に高効率な運転状態が
保持されて省エネルギーの効果が極めて大きい。According to the present invention, when the control means is provided with three arithmetic mechanisms to control the opening of the expansion valve and the number of revolutions of the compressor, the operation state in which power consumption is minimized is automatically controlled. It can be realized efficiently and efficiently, always keeps a highly efficient operation state, and the effect of energy saving is extremely large.
【図１】本発明の一実施例を示す構成図である。FIG. 1 is a configuration diagram showing one embodiment of the present invention.
【図２】本実施例の原理を説明するグラフである。FIG. 2 is a graph illustrating the principle of the present embodiment.
【図３】本実施例の動作の手順を示すフローチャートで
ある。FIG. 3 is a flowchart illustrating a procedure of an operation of the embodiment.
【図４】本実施例の制御動作の内容を説明するグラフで
ある。FIG. 4 is a graph illustrating the contents of a control operation according to the present embodiment.
【図５】本実施例の制御動作の内容を説明するグラフで
ある。FIG. 5 is a graph illustrating the contents of a control operation according to the present embodiment.
【図６】本実施例の操作量の組合せを説明する図であ
る。FIG. 6 is a diagram illustrating a combination of operation amounts according to the present embodiment.
１ 能力可変圧縮機 ２ 室内熱交換器 ３ 室内ファン ４ 流量可変膨脹弁 ５ 室外熱交換器 ６ 室外ファン ７ 吐出温度もしくは吐出過熱度の目標値を決定する機
構 １０ 第１の演算機構 １１ 回転数制御器 １２ 室温設定器 １５ 第２の演算機構 １６ 開度制御器 １７ 第３の演算機構 ２１ 制御手段REFERENCE SIGNS LIST 1 Variable capacity compressor 2 Indoor heat exchanger 3 Indoor fan 4 Variable flow rate expansion valve 5 Outdoor heat exchanger 6 Outdoor fan 7 Mechanism for determining target value of discharge temperature or discharge superheat degree 10 First arithmetic mechanism 11 Rotation speed control Device 12 room temperature setting device 15 second operation mechanism 16 opening degree controller 17 third operation mechanism 21 control means
フロントページの続き (56)参考文献 特開 昭63−29155（ＪＰ，Ａ) 特公 平３−55736（ＪＰ，Ｂ２) 特公 平３−40295（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.7，ＤＢ名) F25B 1/00 F24F 11/02 102 Continuation of the front page (56) References JP-A-63-29155 (JP, A) JP-B-3-55736 (JP, B2) JP-B 3--40295 (JP, B2) (58) Fields investigated (Int) .Cl. 7 , DB name) F25B 1/00 F24F 11/02 102
Claims (5)
外ファンを付設した室外熱交換器とを有する室外機と、
開度を可変とした流量可変膨脹弁と室内ファンを付設し
た室内熱交換器とを有する室内機と、該室内機及び前記
室外機を順次接続して冷暖房サイクルを形成し少なくと
も一つの機器の消費電力を制御する制御手段とを備えて
なる空気調和装置において、前記制御手段は、前記能力
可変圧縮機の吐出温度又は吐出過熱度の目標値を決定す
る機構と、前記吐出温度又は前記吐出過熱度の目標値と
検出された吐出温度又は吐出過熱度との偏差が小さくな
るように前記流量可変膨脹弁の開度を演算する第１の演
算機構と、該第１の演算機構の出力に応じて前記流量可
変膨脹弁の開度を制御する開度制御器と、室温の目標値
を設定する室温設定器と、該設定された室温と検出され
た室温との偏差が小さくなるように前記能力可変圧縮機
の回転数を演算する第２の演算機構と、該第２の演算機
構の出力に応じて前記能力可変圧縮機の回転数を制御す
る回転数制御器と、それぞれの演算により決められた前
記開度及び前記回転数をそれぞれの偏差が所定の範囲内
でかつ消費電力が最小値となるように補正する第３の演
算機構とを具備していることを特徴とする空気調和装
置。An outdoor unit having a variable capacity compressor having a variable rotation speed and an outdoor heat exchanger provided with an outdoor fan;
An indoor unit having a variable flow rate expansion valve with a variable opening and an indoor heat exchanger with an indoor fan, and the indoor unit and the outdoor unit are sequentially connected to form a cooling / heating cycle and consume at least one device. An air conditioner comprising control means for controlling electric power, wherein the control means determines a target value of the discharge temperature or the discharge superheat degree of the variable capacity compressor, and the discharge temperature or the discharge superheat degree A first calculating mechanism for calculating the opening of the variable flow rate expansion valve such that the deviation between the target value of the above and the detected discharge temperature or the detected degree of superheating is reduced, and according to the output of the first calculating mechanism. An opening controller for controlling the opening of the variable flow rate expansion valve; a room temperature setting device for setting a target value of the room temperature; and the capability variable so as to reduce a deviation between the set room temperature and the detected room temperature. Calculate compressor speed A second operation mechanism, a rotation speed controller that controls the rotation speed of the variable capacity compressor according to the output of the second operation mechanism, and the opening degree and the rotation speed determined by the respective calculations. An air conditioner, comprising: a third arithmetic mechanism that corrects each deviation so as to be within a predetermined range and minimize power consumption.
外ファンを付設した室外熱交換器とを有する室外機と、
開度を可変とした流量可変膨脹弁と室内ファンを付設し
た室内熱交換器とを有する室内機と、該室内機及び前記
室外機を順次接続して冷暖房サイクルを形成し少なくと
も一つの機器の消費電力を制御する制御手段とを備えて
なる空気調和装置において、前記制御手段は、前記能力
可変圧縮機の吸入湿り度又は吸入過熱度の目標値を決定
する機構と、前記吸入湿り度又は吸入過熱度の目標値と
検出された吸入湿り度又は吸入過熱度との偏差が小さく
なるように前記流量可変膨脹弁の開度を演算する第１の
演算機構と、該第１の演算機構の出力に応じて前記流量
可変膨脹弁の開度を制御する開度制御器と、室温の目標
値を設定する室温設定器と、該設定された室温と検出さ
れた室温との偏差が小さくなるように前記能力可変圧縮
機の回転数を演算する第２の演算機構と、該第２の演算
機構の出力に応じて前記能力可変圧縮機の回転数を制御
する回転数制御器と、それぞれの演算により決められた
前記開度及び前記回転数をそれぞれの偏差が所定の範囲
内でかつ消費電力が最小値となるように補正する第３の
演算機構とを具備していることを特徴とする空気調和装
置。2. An outdoor unit having a variable capacity compressor having a variable rotation speed and an outdoor heat exchanger provided with an outdoor fan.
An indoor unit having a variable flow rate expansion valve with a variable opening and an indoor heat exchanger with an indoor fan, and the indoor unit and the outdoor unit are sequentially connected to form a cooling / heating cycle and consume at least one device. An air conditioner comprising: a control unit for controlling electric power, wherein the control unit determines a target value of a suction wetness or a suction superheat of the variable capacity compressor; A first calculating mechanism for calculating the degree of opening of the variable flow rate expansion valve so that the deviation between the target value of the temperature and the detected degree of suction wetness or degree of suction superheating is reduced, and the output of the first calculating mechanism is An opening controller for controlling the opening of the variable flow rate expansion valve in accordance therewith, a room temperature setting device for setting a target value of the room temperature, and the deviation between the set room temperature and the detected room temperature is reduced. Calculates the speed of variable capacity compressor A second arithmetic mechanism, a rotation speed controller for controlling the rotation speed of the variable capacity compressor in accordance with the output of the second arithmetic mechanism, and the opening and the rotation speed determined by the respective calculations. And a third computing mechanism that corrects the deviation so that each of the deviations is within a predetermined range and the power consumption is a minimum value.
いて、制御手段は、消費電力に関する第３の演算機構を
実行するか否かの選択を可能とする手段を有しているこ
とを特徴とする空気調和装置。3. The air conditioner according to claim 1, wherein the control means has means for enabling selection of whether or not to execute a third operation mechanism relating to power consumption. And air conditioners.
いて、制御手段は、電力検出器又は電流検出器により消
費電力を監視する手段を有していることを特徴とする空
気調和装置。4. The air-conditioning apparatus according to claim 1, wherein the control means has means for monitoring power consumption by a power detector or a current detector.
いて、制御手段は、製品の出荷の際に該製品の消費電力
を評価して合否を判定する手段を有していることを特徴
とする空気調和装置。5. The air conditioner according to claim 1, wherein the control means includes means for evaluating power consumption of the product at the time of shipping the product to determine whether or not the product is acceptable. Air conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25835793A JP3156191B2 (en) | 1993-10-15 | 1993-10-15 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25835793A JP3156191B2 (en) | 1993-10-15 | 1993-10-15 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07110165A JPH07110165A (en) | 1995-04-25 |
| JP3156191B2 true JP3156191B2 (en) | 2001-04-16 |
Family
ID=17319114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25835793A Expired - Fee Related JP3156191B2 (en) | 1993-10-15 | 1993-10-15 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3156191B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9222694B2 (en) | 2008-11-25 | 2015-12-29 | Mitsubishi Electric Corporation | Refrigerating cycle device |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4951383B2 (en) * | 2007-03-29 | 2012-06-13 | 三洋電機株式会社 | Refrigeration cycle equipment |
| JP5370560B2 (en) * | 2011-09-30 | 2013-12-18 | ダイキン工業株式会社 | Refrigerant cycle system |
| WO2013071967A1 (en) * | 2011-11-16 | 2013-05-23 | A-Heat Allied Heat Exchange Technology Ag | Method for minimising the energy consumption of a heat circulating machine, and heat circulating machine |
| CA3206626A1 (en) * | 2012-10-31 | 2014-05-08 | Delta T, Llc | Integrated thermal comfort control system utilizing circulating fans |
| JP6029460B2 (en) * | 2012-12-27 | 2016-11-24 | 三菱重工業株式会社 | Multi-type air conditioner and operation method thereof |
| JP6847023B2 (en) * | 2017-11-22 | 2021-03-24 | 大阪瓦斯株式会社 | Control method of heat pump device and heat pump device |
| JP6847022B2 (en) * | 2017-11-22 | 2021-03-24 | 大阪瓦斯株式会社 | Control method of heat pump device and heat pump device |
| CN108981097B (en) * | 2018-06-19 | 2020-09-15 | 广东美的暖通设备有限公司 | Air conditioning system and method and device for adjusting energy requirement of air conditioning system |
-
1993
- 1993-10-15 JP JP25835793A patent/JP3156191B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9222694B2 (en) | 2008-11-25 | 2015-12-29 | Mitsubishi Electric Corporation | Refrigerating cycle device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07110165A (en) | 1995-04-25 |
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