JPH0816543B2 - Control device for air conditioner - Google Patents
Control device for air conditionerInfo
- Publication number
- JPH0816543B2 JPH0816543B2 JP60276378A JP27637885A JPH0816543B2 JP H0816543 B2 JPH0816543 B2 JP H0816543B2 JP 60276378 A JP60276378 A JP 60276378A JP 27637885 A JP27637885 A JP 27637885A JP H0816543 B2 JPH0816543 B2 JP H0816543B2
- Authority
- JP
- Japan
- Prior art keywords
- zone
- temperature
- room temperature
- operating frequency
- frequency signal
- 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
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- Air Conditioning Control Device (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、空気調和負荷に基づいて、圧縮機の回転速
度を変える空気調和装置の制御装置に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for an air conditioner that changes the rotation speed of a compressor based on an air conditioning load.
従来の技術 近年、周波数変換装置により、圧縮機の回転速度を変
え、空調負荷に応じて冷房能力を制御する空気調和機が
大きな市場を得ている。2. Description of the Related Art In recent years, an air conditioner that changes the rotation speed of a compressor by a frequency conversion device and controls the cooling capacity according to the air conditioning load has gained a large market.
以下図面を参照しながら、上述した従来の周波数変換
装置を搭載した空気調和機の制御装置の一例について説
明する。An example of an air conditioner control device equipped with the above-described conventional frequency conversion device will be described below with reference to the drawings.
第７図，第８図，第９図は従来の周波数変換装置を搭
載した空気調和機及びその制御装置の構成を示すもので
ある。第７図は空気調和機の冷凍システム図で、１は室
内機、２は室外機である。３は圧縮機、４は室外コイ
ル、５は減圧器、６は室内コイルで、これらを環状に連
接して冷凍サイクルを構成している。７は室内送風機で
被空調空間の空気を循環させ、上記室内コイル６で熱交
換させる。８は室外送風機で外気と上記室外コイル４と
熱交換させる。FIG. 7, FIG. 8 and FIG. 9 show the configurations of an air conditioner equipped with a conventional frequency converter and its control device. FIG. 7 is a refrigeration system diagram of an air conditioner, where 1 is an indoor unit and 2 is an outdoor unit. Reference numeral 3 is a compressor, 4 is an outdoor coil, 5 is a decompressor, and 6 is an indoor coil, which are connected in an annular shape to form a refrigeration cycle. An indoor blower 7 circulates air in the air-conditioned space, and heat is exchanged by the indoor coil 6. An outdoor blower 8 exchanges heat between the outdoor air and the outdoor coil 4.
第８図はブロック図で、９は電源、10は交流電圧を直
流電圧に変換する整流回路である。11は直流を交流に変
換する周波数変換装置で出力周波数を25Hzから75Hzまで
連続的に変えることができる。これにより、圧縮機モー
タ12の回転数は1500〜4500r.p.mの範囲で可変となる。
一方、13は周波数変換装置11に運転周波数信号を出力す
る制御装置である。制御装置13はマイクロコンピュータ
（以下マイコンと言う）が主体となり、その制御仕様も
マイコンに対応させてあるので、複雑な制御が可能であ
る。14はリモコンで、15は室温を検出する温度センサで
ある。又、16は室外送風機7,8等の負荷出力である。制
御装置13はリモコン14の操作信号，室温センサ15の室温
データ等をマイコンの入力として導き、予め設定された
プログラムにより論理演算処理して、室内外送風機7,8
等の負荷16を作動させるとともに、周波数変換装置11に
運転周波数信号を与え、同時に、圧縮機モータ12の運転
状態を、リモコン14に表示させる。FIG. 8 is a block diagram, 9 is a power supply, and 10 is a rectifier circuit for converting an AC voltage into a DC voltage. 11 is a frequency converter that converts direct current to alternating current, and the output frequency can be continuously changed from 25 Hz to 75 Hz. As a result, the rotation speed of the compressor motor 12 is variable within the range of 1500 to 4500 rpm.
On the other hand, 13 is a control device that outputs an operating frequency signal to the frequency conversion device 11. The control device 13 is mainly composed of a microcomputer (hereinafter referred to as a microcomputer), and its control specification is adapted to the microcomputer, so that complicated control is possible. Reference numeral 14 is a remote controller, and 15 is a temperature sensor for detecting room temperature. Further, 16 is a load output of the outdoor blowers 7, 8 and the like. The control device 13 guides the operation signal of the remote controller 14, the room temperature data of the room temperature sensor 15 and the like as the input of the microcomputer, performs the logical operation processing by the preset program, and the indoor and outdoor blowers 7, 8
The load 16 such as the above is operated, an operating frequency signal is given to the frequency converter 11, and at the same time, the operating state of the compressor motor 12 is displayed on the remote controller 14.
第９図は、リモコン14の構成図で、17は圧縮機モータ
12の回転数を能力レベルとして表示するバーディスプレ
イ（LED）、18は目標室温を設定する室温設定器、19は
室内送風機７の強度を切り換える風量切換スイッチ、20
は空気調和機を冷房または暖房の何れかに選択したり、
あるいは、これを停止させる運転停止切換スイッチであ
る。したがって、リモコン14からは室温設定器18の設定
信号，風量切換スイッチ19の風量指定信号，運転停止切
換スイッチ20の運転指令信号が出力され、これらの信号
が全て制御装置13に与えられる。同時に、制御装置13は
バーディスプレイ17を圧縮機モータ12の回転数に応じて
点灯させる信号をリモコン14に与える。FIG. 9 is a block diagram of the remote controller 14, and 17 is a compressor motor.
A bar display (LED) that displays the number of rotations of 12 as a performance level, 18 is a room temperature setting device that sets a target room temperature, 19 is an air volume selector switch that switches the strength of the indoor blower 7, and 20
Selects the air conditioner for either cooling or heating,
Alternatively, it is an operation stop changeover switch for stopping this. Therefore, the remote controller 14 outputs the setting signal of the room temperature setting device 18, the air volume designating signal of the air volume selector switch 19, and the operation command signal of the operation stop selector switch 20, and all of these signals are given to the controller 13. At the same time, the control device 13 gives a signal to the remote controller 14 to turn on the bar display 17 according to the rotation speed of the compressor motor 12.
以上のように構成された空気調和機について、従来の
制御装置13の動作について以下に説明する。従来の制御
装置13は、例えば、冷房運転の場合、第10図に示すよう
に、室温と設定温度の差温の変動範囲を複数ゾーンZ1〜
Z7に分け、それぞれのゾーンZ1〜Z7に圧縮機モータ12の
運転周波数（OFF〜75Hz）を対応させている。又、同一
ゾーンに一定時間（例えば５分間）とどまっておれば、
室温と設定温度の差がより開いたものとして、次表に示
す様に、運転周波数の増減補正を行なっている。With respect to the air conditioner configured as described above, the operation of the conventional control device 13 will be described below. The conventional control device 13, for example, in the case of cooling operation, as shown in FIG. 10, the variation range of the temperature difference between the room temperature and the set temperature is a plurality of zones Z 1 ~
It is divided into Z 7, and the operating frequency (OFF to 75 Hz) of the compressor motor 12 is made to correspond to each zone Z 1 to Z 7 . Also, if you stay in the same zone for a certain time (for example, 5 minutes),
Assuming that the difference between the room temperature and the set temperature is wider, the operating frequency is increased or decreased as shown in the following table.
この様に、従来例においては、室温と設定温度の差温
の変動範囲を複数に分割したゾーンZ1〜Z7に対応した運
転周波数と、同一ゾーンに５分間とどまっている時の補
正により、運転周波数が決定される。 As described above, in the conventional example, the operating frequency corresponding to the zones Z 1 to Z 7 in which the variation range of the temperature difference between the room temperature and the set temperature is divided into a plurality, and the correction when the same zone remains for 5 minutes, The operating frequency is determined.
発明が解決しようとする問題点 しかしながら上記のような動作では、室温が設定温度
を含む制御目標ゾーン（Z5に相当）以外のゾーンで安定
した時は、５分間経過しないと運転周波数の増減を行な
わないため、制御目標ゾーンに到達するのに長時間かか
るという問題点を有していた。Problems to be Solved by the Invention However, in the above-described operation, when the room temperature is stabilized in a zone other than the control target zone (corresponding to Z 5 ) including the set temperature, the operating frequency is increased or decreased unless 5 minutes elapse. Since it is not performed, there is a problem that it takes a long time to reach the control target zone.
本発明は、上記問題点に鑑み、室温が制御目標ゾーン
以外のゾーンで安定することのないように制御するとと
もに、すみやかに制御目標ゾーンに到達することのでき
る制御装置を提供するものである。In view of the above problems, the present invention provides a control device that controls the room temperature so as not to stabilize in a zone other than the control target zone and can quickly reach the control target zone.
問題点を解決するための手段 上記問題点を解決するために本発明の空気調和機の制
御装置は、室温設定器により設定される設定温度と温度
センサにより検出される室温との差温の変動範囲を第１
の温度幅で複数に分割した第１のゾーン群を形成すると
ともに、さらに前記差温の変動範囲を第１の温度幅より
も小さく設定した第２の温度幅で複数に分割した第２の
ゾーン群を形成し、室温が設定温度から遠ざかる方向に
変化して、前記第１のゾーンまたは前記第２のゾーンを
移行した時は運転周波数信号をそれぞれ所定値だけ変化
させ、一方、室温が設定温度に近づく方向に変化して、
前記第１のゾーンを移行した時は前記運転周波数信号を
所定値だけ変化させるが、前記第２ゾーンを移行した時
は前記周波数信号を変化させないことを特徴としてい
る。Means for Solving the Problems In order to solve the above problems, the control device for an air conditioner according to the present invention has a variation in the temperature difference between the set temperature set by the room temperature setting device and the room temperature detected by the temperature sensor. Range first
Forming a first zone group divided into a plurality of temperature zones, and further dividing a second zone into a plurality of second temperature zones in which the variation range of the temperature difference is set smaller than the first temperature zone. When forming a group, the room temperature changes away from the set temperature, and when the first zone or the second zone is moved, the operating frequency signal is changed by a predetermined value, respectively, while the room temperature is set to the set temperature. Change toward
The operating frequency signal is changed by a predetermined value when the first zone is changed, but the frequency signal is not changed when the second zone is changed.
作用 本発明は上記した構成によって、室温が、第１のゾー
ン群中の設定温度を含む制御目標ゾーン以外のゾーン内
で安定傾向になってもそのゾーン内で室温変動があり、
第１のゾーン群の温度幅より小さい温度幅の第２のゾー
ン群において、室温が設定温度から遠ざかる方向に変化
して第２のゾーンを移行した時は運転周波数信号を設定
温度に近づくように所定値だけ変化させ、反対に、室温
が設定温度に近づく方向に変化して第２のゾーンを移行
した時は運転周波数信号を変化させないため、室温が制
御目標ゾーン以外の同一の第１のゾーン内で安定傾向に
なっても短時間で運転周波数の増減を行なうためすみや
かに制御目標ゾーンに到達させることができる。Effect According to the present invention, by the above-mentioned configuration, even if the room temperature tends to be stable in a zone other than the control target zone including the set temperature in the first zone group, there is room temperature variation in that zone,
In the second zone group having a temperature width smaller than the temperature width of the first zone group, when the room temperature changes in the direction of moving away from the set temperature and the second zone is moved, the operating frequency signal approaches the set temperature. When the room temperature is changed by a predetermined value and the room temperature changes toward the set temperature and the second zone is shifted, the operating frequency signal is not changed. Therefore, the room temperature is the same in the first zone other than the control target zone. Since the operating frequency is increased or decreased in a short time even if the stable tendency is reached, the control target zone can be quickly reached.
実 施 例 以下本発明の一実施例の空気調和機の制御装置につい
て、図面を参照しながら説明する。空気調和機の冷凍シ
ステム図、及び、回路ブロック図は従来のものと同構成
であるため説明を割愛する。第１図は、制御装置13が備
える機能ブロック図である。Examples Hereinafter, a control device for an air conditioner according to an embodiment of the present invention will be described with reference to the drawings. The refrigeration system diagram and the circuit block diagram of the air conditioner have the same configurations as the conventional ones, and therefore the description thereof will be omitted. FIG. 1 is a functional block diagram of the control device 13.
13は制御装置であり、温度センサ15と室温設定器18の
信号を取り込んで、室温と設定温度との差温を検出する
差温検出手段21と、室温が下がり勾配か上がり勾配かを
判断するためこの差温を記憶する差温記憶手段22と、差
温検出手段21と差温記憶手段22のデータに基づいて第１
のゾーン群を形成するとともに、室温の属する第１のゾ
ーンを判断する第１のゾーン群形成手段23と、第２のゾ
ーン群を形成するとともに室温の属する第２のゾーンを
判断する第２のゾーン群形成手段24と、第１のゾーン群
形成手段により判断された室温の属する第１のゾーンを
記憶する第１のゾーン記憶手段25と、第２のゾーン群形
成手段により判断された室温の属する第２のゾーンを記
憶する第２のゾーン記憶手段26と、運転周波数信号を計
算し周波数変換装置11に出力する運転周波数信号計算手
段27により構成されている。Reference numeral 13 denotes a control device, which takes in signals from the temperature sensor 15 and the room temperature setting device 18 to determine a temperature difference detecting means 21 for detecting a temperature difference between the room temperature and the set temperature, and to judge whether the room temperature is a down slope or an up slope. Therefore, based on the data of the differential temperature storage means 22 for storing the differential temperature, the differential temperature detection means 21 and the differential temperature storage means 22, the first
And a second zone which forms a second zone and determines a second zone to which the room temperature belongs. The zone group forming means 24, the first zone storing means 25 for storing the first zone to which the room temperature determined by the first zone group forming means belongs, and the room temperature determined by the second zone group forming means It is composed of a second zone storage means 26 for storing the second zone to which it belongs and an operation frequency signal calculation means 27 for calculating an operation frequency signal and outputting it to the frequency converter 11.
以上のように構成された空気調和機の制御装置につい
て、以下にその動作を説明する。The operation of the air conditioner control device configured as described above will be described below.
第２図は、室温と設定温度の差温の変動範囲を第１の
ゾーン群（実線で区切られたゾーン）と第２のゾーン群
（破線で区切られたゾーン）とに分割した図で、冷房運
転をした時のゾーン分割を表わしている。本実施例にお
いては、室温が下がり勾配の場合と上がり勾配の場合と
でゾーンの区切りを変えている。すなわち第１のゾーン
群では、室温が下がり勾配の場合、設定温度よりも1.8
℃以上高い範囲をZ1ゾーン、1.2〜1.8℃高い範囲をZ2ゾ
ーン、0.6〜1.2℃高い範囲をZ3ゾーン、０〜0.6℃高い
範囲をZ4ゾーン、設定温度よりも０〜−0.6℃低い範囲
をZ5ゾーン、−0.6〜−1.2℃低い範囲をZ6ゾーン、−1.
2℃以上低い範囲をZ7ゾーンとする。また、室温が上が
り勾配の場合、設定温度よりも2.4℃以上高い範囲をZ1
ゾーン、1.8〜2.4℃高い範囲をZ2ゾーン、1.2〜1.8℃高
い範囲をZ3ゾーン、0.6〜1.2℃高い範囲をZ4ゾーン、０
〜0.6℃高い範囲をZ5ゾーン、設定温度よりも低い範囲
をZ7ゾーンとし、Z6ゾーンはなくなっている。本実施例
ではZ5ゾーンを制御目標ゾーンとしている。一方、第２
のゾーン間では、室温が下がり勾配の場合、設定温度よ
りも2.2℃高い温度から、1.2℃低い温度までの範囲を0.
2℃きざみで分割して第２のゾーン群を形成している
が、室温が上がり勾配の場合は、下がり勾配の場合の第
２のゾーン群のしきい値より0.2℃だけ高くしたしきい
値により第２のゾーン群を形成している。FIG. 2 is a diagram in which the variation range of the temperature difference between the room temperature and the set temperature is divided into a first zone group (zones separated by a solid line) and a second zone group (zones separated by a broken line), This shows the zone division when the cooling operation is performed. In this embodiment, the zone division is changed depending on whether the room temperature has a downward slope or an upward slope. That is, in the first zone group, when the room temperature has a declining slope, the temperature is 1.8% lower than the set temperature.
Higher than ℃ Z 1 zone, 1.2 to 1.8 ℃ higher range Z 2 zone, 0.6 to 1.2 ℃ higher range Z 3 zone, 0 to 0.6 ℃ higher range Z 4 zone, set temperature 0 to -0.6 Low temperature range Z 5 zone, -0.6 to -1.2 low temperature range Z 6 zone, -1.
The lower range of 2 ℃ and Z 7 zone. If the room temperature has a rising gradient, the range higher than the set temperature by 2.4 ° C or more is Z 1
Zone, 1.8 to 2.4 ℃ higher range is Z 2 zone, 1.2 to 1.8 ℃ higher range is Z 3 zone, 0.6 to 1.2 ℃ higher range is Z 4 zone, 0
To 0.6 ° C. higher range Z 5 zones, the range lower than the set temperature of Z 7 zones, are gone Z 6 zones. In the present embodiment, there is a control target zone Z 5 zones. Meanwhile, the second
When the room temperature has a declining slope between zones, the range from a temperature 2.2 ° C higher than the set temperature to a temperature 1.2 ° C lower than the set temperature is 0.
The second zone group is formed by dividing it by 2 ℃, but when the room temperature has an upward slope, the threshold value is increased by 0.2 ℃ from the threshold value of the second zone group when the room temperature has a downward slope. To form a second zone group.
第１のゾーン群と周波数設定信号とは下表の如く対応
している。すなわち、運転開始時は、Z1,Z2,……Z6,Z7
それぞれの第１のゾーンに対して75Hz,65Hz……25Hz,停
止という具合に対応している。The first zone group and the frequency setting signal correspond as shown in the table below. That is, at the start of operation, Z 1 , Z 2 , ...... Z 6 , Z 7
It corresponds to 75Hz, 65Hz ... 25Hz, stop, etc. for each first zone.
これは、運転開始時に、室温と設定温度との差温がZ1
ゾーンにあれば、制御装置13が周波数変換装置11に対し
て75Hzの運転周波数信号を与えることを意味し、また、
室温と設定温度との差温がZ7ゾーンにあれば、周波数変
換装置11に対して圧縮機の停止指令を与えることを意味
する。 This is because the temperature difference between room temperature and set temperature is Z 1
If in the zone, it means that the control device 13 gives an operating frequency signal of 75 Hz to the frequency conversion device 11, and
If the temperature difference between the room temperature and the set temperature is in the Z 7 zone, it means that the frequency converter 11 is given a command to stop the compressor.
かかる対応関係において、室温の変化状態ならびに周
波数の変化状態を第３図に示す。同図において、運転開
始時に、室温が、室温と設定温度との差温が1.8℃以上
のZ1ゾーンにあり、75Hzの運転周波数信号が与えられる
ため室温は急速に降下する。また、その差温が1.2〜1.8
℃のZ2ゾーンに移行すれば65Hzの運転周波数信号が周波
数変換装置11に加えられ、以下順次その差がZ5ゾーンに
なった時点で35Hzの運転周波数信号が加えられる。なお
室温が上記の如く下がり勾配にあって、しかも、設定温
度よりも−0.6℃低い状態に保持される限り35Hzの運転
周波数信号を出力し続けることになる。その後、室温が
上昇して設定温度よりも0.6℃高い状態に移行した場合
でも、この範囲は室温の上がり勾配におけるZ5ゾーンに
属するので、同様に35Hzの運転周波数信号を出力し続け
る。すなわち、室温が下がり勾配の第１のゾーン設定
と、室温が上がり勾配の第１のゾーン設定との間に0.6
℃の差があるため、これがヒステリシスとして作用する
ので、運転周波数が頻繁に変化することがなくなり、円
滑な運転を行なうことができる。FIG. 3 shows the state of change in room temperature and the state of change in frequency in this correspondence. In the figure, at the start of operation, the room temperature is in the Z 1 zone in which the temperature difference between the room temperature and the set temperature is 1.8 ° C or more, and the room frequency rapidly drops because the operation frequency signal of 75 Hz is given. Also, the temperature difference is 1.2 to 1.8
When the temperature shifts to the Z 2 zone at ℃, the operating frequency signal of 65 Hz is applied to the frequency conversion device 11, and thereafter, when the difference becomes the Z 5 zone, the operating frequency signal of 35 Hz is applied. As long as the room temperature is in the declining slope as described above and is kept at -0.6 ° C lower than the set temperature, the operation frequency signal of 35Hz is continuously output. After that, even when the room temperature rises and shifts to a state of being 0.6 ° C. higher than the set temperature, since this range belongs to the Z 5 zone in the rising gradient of the room temperature, the operation frequency signal of 35 Hz is continuously output in the same manner. That is, between the setting of the first zone where the room temperature is decreasing and the first zone where the room temperature is rising,
Since there is a difference of ° C, this acts as hysteresis, so that the operating frequency does not change frequently, and smooth operation can be performed.
ところで、第３図に示した室温の変化状態図は空気調
和負荷が中程度で室温も順調に降下する例を示したけれ
ども、空気調和負荷が比較的大きい場合、あるいは小さ
い場合には、室温が設定温度に到達しないにもかかわら
ず同一周波数で長時間運転しなければならない事態も予
測される。このような不具合を解決するために、本実施
例においては、第２図に示す第２のゾーン群を設け、下
表の如く運転周波数信号の補正を行なっている。By the way, the room temperature change state diagram shown in FIG. 3 shows an example in which the air conditioning load is medium and the room temperature also drops smoothly. However, when the air conditioning load is relatively large or small, the room temperature is It is expected that the temperature must be set to the same frequency for a long time even if the set temperature is not reached. In order to solve such a problem, in this embodiment, the second zone group shown in FIG. 2 is provided and the operating frequency signal is corrected as shown in the table below.
かかる補正関係において、室温の変化状態ならびに周
波数の変化状態を第４図と第５図に示す。第４図は空調
負荷が比較的大きい場合である。同図において、運転開
始時に、室温が、室温と設定温度との差温が1.8℃以上
のZ1ゾーンにあり、75Hzの運転周波数信号が与えられる
ため室温は急速に降下し、時間T1でZ2ゾーンに移行し65
Hz運転、T3でZ3ゾーンに移行し55Hz運転を行なう。とこ
ろが、空調負荷が比較的大きいため、Z3ゾーン内で運転
周波数が55Hzで安定傾向となり、室温が設定温度に到達
できなくなり、このような場合は、室温が上がり勾配で
第２のゾーンを移行する時間T3で現在運転周波数＋5Hz
の補正を行なうための運転周波数は60Hzとなり再び室温
は降下し始める。そして、T4でZ4ゾーンに移行し、現在
運転周波数−10Hzの50Hz運転となる。そしてZ4ゾーン内
で、再び、室温が安定傾向となるが時間T5で第２のゾー
ンを上がり勾配で移行しているため補正により運転周波
数は55Hzとなる。これにより、室温は降下し、時間T6で
制御目標ゾーンであるZ6ゾーンに移行し運転周波数は45
Hzとなり安定する。 In this correction relationship, changes in room temperature and changes in frequency are shown in FIGS. 4 and 5. FIG. 4 shows the case where the air conditioning load is relatively large. In the figure, at the start of operation, the room temperature is in the Z 1 zone where the temperature difference between the room temperature and the set temperature is 1.8 ° C or more, and the 75 Hz operating frequency signal is applied, so the room temperature drops rapidly and at time T 1 . Moved to Z 2 zone 65
Hz operation, transfer to Z 3 zone at T 3 and perform 55 Hz operation. However, since the air conditioning load is relatively large, the operating frequency in the Z 3 zone tends to be stable at 55 Hz, and the room temperature cannot reach the set temperature. In such a case, the room temperature rises and the zone moves to the second zone with a gradient. current operation frequency + 5Hz at time T 3 to
The operating frequency to correct the temperature becomes 60Hz and the room temperature begins to drop again. Then, the process proceeds to Z 4 zone T 4, a 50Hz driving current operation frequency-10 Hz. Then, in the Z 4 zone, the room temperature tends to be stable again, but at time T 5 , the operating frequency becomes 55 Hz due to the correction because the second zone moves upward with a gradient. As a result, the room temperature drops, and at time T 6 , it shifts to the Z 6 zone, which is the control target zone, and the operating frequency is 45
It becomes Hz and becomes stable.
第５図は、空調負荷が比較的小さい場合である。同図
において、運転開始時に、室温が、室温と設定温度との
差温が0.6〜1.2℃の範囲のZ3ゾーンにあり、55Hzで運転
している。時間T1でZ4ゾーンに移行し45Hz運転、T2で制
御目標ゾーンであるZ5ゾーンは移行し35Hz運転となる。
ところが空調負荷が小さいため、室温はさらに降下し、
時間T3でZ6ゾーンに移行するため運転周波数は25Hzとな
る。そしてZ6ゾーン内で、室温が安定傾向となるが、時
間T4で第２のゾーンを下がり勾配で移行しているため現
在運転周波数−5Hzの補正を行なう。この場合は25Hz未
満の運転周波数は設定されていないため運転を停止す
る。そして、時間T5でZ5ゾーンに移行し、35Hzで運転を
再開する。この動作例では、Z6ゾーンに移行した時の運
転周波数は25Hzであるため、第２のゾーンを下がり勾配
で移行した時の補正により運転を停止してしまうが、第
４図において説明したように、＋5Hzの補正が加わった
場合は、Z6ゾーンでの運転周波数が25Hzになるとは限ら
ず、この様な場合には、運転停止にはならず、現在運転
周波数−5Hzの補正を加えた周波数で運転する。この様
にして、空調負荷が小ない場合でも運転周波数を順次降
下させるため過冷却という事態を未然に防ぐことができ
る。又、第２のゾーンは、第１のゾーンと同様に、下が
り勾配と上がり勾配とで0.2℃のヒステリシスを有して
いるので、運転周波数が頻繁に変化することがなく、円
滑な運転を行なうことができる。FIG. 5 shows the case where the air conditioning load is relatively small. In the figure, at the start of the operation, the room temperature is in the Z 3 zone where the temperature difference between the room temperature and the set temperature is in the range of 0.6 to 1.2 ° C, and the operation is performed at 55 Hz. At time T 1 , the zone moves to Z 4 zone and operates at 45 Hz, and at T 2 , zone Z 5, which is the control target zone, transits to 35 Hz.
However, because the air conditioning load is small, the room temperature will drop further,
The operating frequency is 25 Hz because the zone is changed to the Z 6 zone at time T 3 . Then, the room temperature tends to be stable in the Z 6 zone, but at the time T 4 , the current zone operation frequency is -5 Hz because the second zone shifts with a downward slope. In this case, the operating frequency below 25 Hz is not set, so the operation is stopped. Then, at time T 5 , the Z 5 zone is entered and the operation is restarted at 35 Hz. In this operation example, since the operating frequency when moving to the Z 6 zone is 25 Hz, the driving is stopped by the correction when the second zone is moved downward, but as described in FIG. In addition, if + 5Hz correction is added, the operating frequency in the Z 6 zone does not always become 25Hz. In such a case, the operation is not stopped, and the current operating frequency −5Hz is added. Drive at frequency. In this way, even if the air-conditioning load is not small, the operating frequency is gradually decreased, so that the situation of supercooling can be prevented. Further, the second zone, like the first zone, has a hysteresis of 0.2 ° C. between the downward slope and the upward slope, so that the operating frequency does not change frequently and smooth operation is performed. be able to.
第６図は、上述の動作を実現する制御装置13の具体的
な処理手順を示すフローチャートである。FIG. 6 is a flowchart showing a specific processing procedure of the control device 13 that realizes the above operation.
この第６図において、運転が開始されると、制御装置
13は、温度センサ15により検出される室温と室温設定器
18により設定される設定温度とを取り込み、その差温の
変動範囲により第１のゾーン群を形成し、現在室温がい
ずれの第１のゾーン内にあるかを判断する。そして、そ
の第１のゾーンに相当する運転周波数信号を決定し周波
数変換装置11に出力する（ステップ101〜102）。そし
て、再び、上述の処理と同様の処理を行ない第１のゾー
ンを判断しその第１のゾーンが設定温度を含む制御目標
ゾーンZ5であるかどうかを判断する（ステップ103〜10
4）。室温が制御目標ゾーン内にあればステップ103に戻
り、制御目標ゾーン内になければステップ105に進み、
室温が設定温度より大きいかどうかを判断する。室温が
設定温度より大きければステップ106に進み、室温が第
１のゾーンを移行したかどうかを判断する。この処理
は、前回、第１のゾーン判断をした時に、室温がどの第
１のゾーン内にあるかを記憶しておき、次に、第７のゾ
ーン判断をした時、室温が第１のゾーンを移行したかど
うかを判断すればよい。ステップ106で、第１のゾーン
を移行していれば、下がり勾配か上がり勾配かを判断す
る（ステップ107）。下がり勾配であればステップ108で
現在運転周波数から10Hz減じた運転周波数信号を出力
し、ステップ103に戻る。上がり勾配であれば現在運転
周波数に10Hz加えた運転周波数信号を出力し（ステップ
109）、ステップ103に戻る。ステップ106で、第１のゾ
ーンを移行していなければ、第２のゾーンを判断し、第
２のゾーンを移行したかどうかを判断する（ステップ11
0〜111）。第２のゾーンを移行していなければステップ
103に戻り、第２のゾーンを移行していれば上がり勾配
が下がり勾配かを判断する（ステップ112）。下がり勾
配であればステップ103に戻り、上がり勾配であれば現
在運転周波数に5Hz加えた運転周波数信号を出力し（ス
テップ113）、ステップ103に戻る。以上は室温が設定温
度より高い場合のフローチャートであるが、次に室温が
設定温度より低い場合のフローチャートを示す。ステッ
プ105で、室温が設定温度より低い場合はステップ114に
進み、室温が第１のゾーンを移行したかどうかを判断す
る。第１のゾーンを移行していれば、下がり勾配か上が
り勾配かを判断し（ステップ115）、上がり勾配であれ
ば現在運転周波数に10Hzを加えた運転周波数信号を出力
し（ステップ116）、ステップ103に戻る。この場合、室
温は制御目標ゾーンZ5に移行している。ステップ115
で、下がり勾配であればZ6ゾーンであるかどうかを判断
し（ステップ117）、Z6ゾーンであれば現在運転周波数
から10Hz減じた運転周波数信号を出力する（ステップ11
8）。Z6ゾーンでなければZ7ゾーンであると判断し、運
転を停止させる（ステップ119）。次に、ステップ114
で、室温が第１のゾーンを移行していなければ第２のゾ
ーン判断をし、第２のゾーンを移行したかどうかを判断
する（ステップ120〜121）。第２のゾーンを移行してい
なければステップ103に戻り、第２のゾーンを移行して
いれば下がり勾配か上がり勾配かを判断する（ステップ
122）。上がり勾配であればステップ103に戻り、下がり
勾配であればステップ123に進む。ステップ123では、現
在運転周波数が25Hzかどうかを判断し、25Hzでないなら
ば現在運転周波数から5Hz減じた運転周波数信号を出力
し（ステップ124）、ステップ103に戻る。現在運転周波
数が25Hzであれば、25Hz未満の運転周波数は設定されて
いないので、運転を停止する（ステップ119）。運転停
止後は、第１のゾーンを判断し、室温が制御目標ゾーン
Z5内にあるかどうかを判断する（ステップ125〜126）。
制御目標ゾーンZ5内になければステップ119に戻り、Z5
ゾーン内にあれば35Hzの運転周波数信号を出力してステ
ップ103に戻る。In FIG. 6, when the operation is started, the control device
13 is a room temperature and a room temperature setting device detected by the temperature sensor 15.
The set temperature set by 18 is taken in, the first zone group is formed by the variation range of the temperature difference, and it is determined which of the first zones the room temperature is currently in. Then, the operating frequency signal corresponding to the first zone is determined and output to the frequency conversion device 11 (steps 101 to 102). Then, again, the same processing as the above-mentioned processing is performed to judge the first zone and judge whether the first zone is the control target zone Z 5 including the set temperature (steps 103 to 10).
Four). If the room temperature is within the control target zone, the process returns to step 103, and if it is not within the control target zone, the process proceeds to step 105,
Determine whether the room temperature is higher than the set temperature. If the room temperature is higher than the set temperature, the routine proceeds to step 106, where it is judged whether the room temperature has moved to the first zone. This process stores which first zone the room temperature is in when the first zone is determined last time, and when the seventh zone is determined next, the room temperature is the first zone. It is only necessary to determine whether or not has been migrated. In step 106, if the first zone has been moved, it is determined whether it is a down slope or an up slope (step 107). If it is a downward slope, an operating frequency signal obtained by subtracting 10 Hz from the current operating frequency is output in step 108, and the process returns to step 103. If it is an upward slope, an operating frequency signal that is 10 Hz higher than the current operating frequency is output (step
109) and returns to step 103. In step 106, if the first zone has not been migrated, the second zone is determined, and it is determined whether the second zone has been migrated (step 11).
0-111). Step if you have not moved to the second zone
Returning to 103, if the second zone has been transitioned, it is determined whether the ascending slope is a descending slope (step 112). If it is a downward slope, the process returns to step 103, and if it is an upward slope, an operating frequency signal obtained by adding 5 Hz to the current operating frequency is output (step 113), and the process returns to step 103. The above is the flowchart when the room temperature is higher than the set temperature, but next, the flowchart when the room temperature is lower than the set temperature is shown. In step 105, when the room temperature is lower than the set temperature, the process proceeds to step 114, and it is determined whether the room temperature has moved to the first zone. If the vehicle is moving to the first zone, it is determined whether it is a down slope or an up slope (step 115), and if it is an up slope, an operating frequency signal obtained by adding 10 Hz to the current operating frequency is output (step 116), and the step is executed. Return to 103. In this case, the room temperature has moved to the control target zone Z 5 . Step 115
If it is a downward slope, it is judged whether or not it is in the Z 6 zone (step 117), and if it is the Z 6 zone, an operating frequency signal obtained by subtracting 10 Hz from the current operating frequency is output (step 11).
8). If not Z 6 zone is determined that the Z 7 zone, stops the operation (step 119). Then step 114
Then, if the room temperature has not moved to the first zone, the second zone is judged, and it is judged whether or not the second zone has been moved (steps 120 to 121). If the second zone has not been transferred, the process returns to step 103, and if the second zone has been transferred, it is determined whether the slope is down or up (step
122). If it is an upward slope, the process returns to step 103, and if it is a downward slope, the process proceeds to step 123. In step 123, it is judged whether or not the current operating frequency is 25 Hz, and if it is not 25 Hz, an operating frequency signal obtained by subtracting 5 Hz from the current operating frequency is output (step 124) and the process returns to step 103. If the current operating frequency is 25 Hz, the operating frequency less than 25 Hz is not set, so the operation is stopped (step 119). After the operation is stopped, the first zone is judged and the room temperature is the control target zone.
It is determined whether it is within Z 5 (steps 125 to 126).
If it is not within the control target zone Z 5 , return to step 119 and execute Z 5
If it is in the zone, an operating frequency signal of 35 Hz is output and the process returns to step 103.
かくして、圧縮機は室温の属する第１のゾーンに相当
する運転周波数で運転されると共に、制御目標ゾーン以
外の第１ゾーン内で安定傾向になると、運転周波数を補
正制御することができる。Thus, the compressor is operated at the operating frequency corresponding to the first zone to which the room temperature belongs, and when the compressor tends to be stable in the first zone other than the control target zone, the operating frequency can be corrected and controlled.
以上のように本実施例によれば、本制御装置は室温と
設定温度との差温の変動範囲を0.6℃の温度幅で複数に
分割した第１のゾーン群と、前記差温の変動範囲を0.2
℃の温度幅で複数に分割した第２のゾーン群を形成し、
室温が設定温度から遠ざかる方向に変化して、第１のゾ
ーンを移行した時は運転周波数を10Hz増減させ、第２の
ゾーンを移行した時も運転周波数を5Hz増減させるが、
室温が設定温度に近づく方向に変化して、第１のゾーン
を移行した時は運転周波数を10Hz増減させ、第２のゾー
ンを移行した時は運転周波数信号を変化させない、とと
もに室温が第１のゾーンと第２のゾーンを同時に移行し
た時は第１のゾーンのみ移行したとして制御することに
より、室温が第１のゾーン群中の制御目標ゾーン以外の
ゾーン内で安定傾向となっても、室温変動により、第２
のゾーンを設定温度から遠ざかる方向に移行した時に運
転周波数は5Hz増減され、又、室温が設定温度に近づく
方向に変化して第２のゾーンを移行しても運転周波数を
変化させないため、室温が同一の第１のゾーン内で安定
するのを防止することができる。本実施例においては冷
房運転について説明してきたが、暖房運転についても同
様に効果があることは言うまでもない。As described above, according to the present embodiment, the control device includes the first zone group in which the variation range of the temperature difference between the room temperature and the set temperature is divided into a plurality of temperature ranges of 0.6 ° C., and the variation range of the temperature difference. To 0.2
Forming a second zone group divided into a plurality of temperature ranges of ℃,
When the room temperature changes away from the set temperature and the first zone is changed, the operating frequency is increased or decreased by 10 Hz, and when the second zone is changed, the operating frequency is increased or decreased by 5 Hz.
When the room temperature changes toward the set temperature and the first zone is changed, the operating frequency is increased or decreased by 10 Hz, and when the second zone is changed, the operating frequency signal is not changed. When the zone and the second zone are moved at the same time, the control is performed assuming that only the first zone is moved, so that even if the room temperature tends to be stable in a zone other than the control target zone in the first zone group, the room temperature Second due to fluctuations
The operating frequency is increased / decreased by 5 Hz when the zone moves away from the set temperature, and the operating frequency does not change even if the room temperature changes toward the set temperature and moves to the second zone. It is possible to prevent stabilization within the same first zone. Although the cooling operation has been described in this embodiment, it goes without saying that the heating operation has the same effect.
発明の効果 以上のように本発明における制御装置は、室温設定器
により設定される設定温度と温度センサにより検出され
る室温との差温の変動範囲を第１の温度幅で複数に分割
した第１のゾーン群を形成するとともに、さらに、前記
差温の変動範囲を第１の温度幅よりも小さく設定した第
２の温度幅で複数に分割した第２のゾーン群を形成し、
室温が前記設定温度から遠ざかる方向に変化して前記第
１のゾーンまたは前記第２のゾーンを移行した時は運転
周波数信号をそれぞれ所定値だけ変化させ、一方、室温
が前記設定温度に近づく方向に変化して前記第１のゾー
ンを移行した時は運転周波数信号を所定値だけ変化させ
るが、前記第２のゾーンを移行した時は運転周波数信号
を変化させないことを特徴とすることにより、室温が第
１のゾーン群中の設定温度を含む制御目標ゾーン以外の
ゾーン内で安定傾向になっても、そのゾーン内で室温変
動があり、第１のゾーン群の温度幅よりも小さい温度幅
の第２のゾーン群において、室温が設定温度から遠ざか
る方向に変化して第２のゾーンを移行した時は運転周波
数信号を設定温度に近づくように所定値だけ変化させ、
反対に、室温が設定温度に近づく方向に変化して第２の
ゾーンを移行した時は運転周波数信号を変化させないた
め、室温が制御目標ゾーン以外の同一の第１のゾーン内
で安定傾向になっても短時間で運転周波数の増減を行な
うためすみやかに制御目標ゾーンに到達させることがで
きる。Advantageous Effects of Invention As described above, the control device according to the present invention divides the variation range of the temperature difference between the set temperature set by the room temperature setting device and the room temperature detected by the temperature sensor into a plurality of first temperature ranges. 1 zone group is formed, and further, a second zone group is formed by dividing the variation range of the temperature difference into a plurality of second temperature zones set to be smaller than the first temperature zone,
When the room temperature changes in the direction to move away from the set temperature and moves to the first zone or the second zone, the operating frequency signal is changed by a predetermined value, respectively, while the room temperature approaches the set temperature. The operating frequency signal is changed by a predetermined value when the temperature changes and the first zone is changed, but the operating frequency signal is not changed when the second zone is changed. Even if there is a stable tendency in a zone other than the control target zone including the set temperature in the first zone group, there is room temperature variation in that zone, and the first zone group having a temperature width smaller than the temperature width of the first zone group In the second zone group, when the room temperature changes in the direction away from the set temperature and moves to the second zone, the operating frequency signal is changed by a predetermined value so as to approach the set temperature,
On the contrary, since the operating frequency signal is not changed when the room temperature changes toward the set temperature and moves to the second zone, the room temperature tends to be stable in the same first zone other than the control target zone. Even if the operating frequency is increased or decreased in a short time, the control target zone can be reached quickly.
第１図は本発明の一実施例における空気調和機の機能ブ
ロック図、第２図は同第１図の冷房運転時のゾーン分割
図、第３図は空気調和負荷が中程度の場合の動作説明
図、第４図は空気調和負荷が比較的大きい場合の動作説
明図、第５図は空気調和負荷が比較的小さい場合の動作
説明図、第６図はフローチャート図、第７図は従来の空
気調和機の冷凍サイクル図、第８図は回路ブロック図、
第９図はリモコン構成図、第10図はゾーン分割図であ
る。 ３……圧縮機、４……室外コイル、５……減圧器、６…
…室内コイル、18……室温設定器、15……温度センサ、
11……周波数変換装置、13……制御装置。FIG. 1 is a functional block diagram of an air conditioner in one embodiment of the present invention, FIG. 2 is a zone division diagram during the cooling operation of FIG. 1, and FIG. 3 is an operation when the air conditioning load is medium. Explanatory diagram, FIG. 4 is an operation explanatory diagram when the air conditioning load is relatively large, FIG. 5 is an operation explanatory diagram when the air conditioning load is relatively small, FIG. 6 is a flowchart diagram, and FIG. Fig. 8 is a refrigeration cycle diagram of the air conditioner, Fig. 8 is a circuit block diagram,
FIG. 9 is a remote controller configuration diagram, and FIG. 10 is a zone division diagram. 3 ... Compressor, 4 ... Outdoor coil, 5 ... Decompressor, 6 ...
… Indoor coil, 18 …… Room temperature setting device, 15 …… Temperature sensor,
11 …… Frequency converter, 13 …… Control device.
Claims (1)
等よりなる冷凍サイクルと、室温目標値を設定する室温
設定器と、室内温度を検出する温度センサと、周波数を
変えることにより前記圧縮機の回転数を変える周波数変
換装置と、前記周波数変換装置に運転周波数信号を与え
る制御装置とを有し、前記制御装置は、前記室温設定器
により設定される設定温度と前記温度センサにより検出
される室温との差温の変動範囲を第１の温度幅で複数に
分割した第１のゾーン群を形成するとともに、前記差温
の変動範囲を第１の温度幅よりも小さく設定した第２の
温度幅で複数に分割した第２のゾーン群を形成し、室温
が前記設定温度から遠ざかる方向に変化して、前記第１
のゾーンまたは前記第２のゾーンを移動した時、前記運
転周波数信号をそれぞれ所定値だけ変化させ、一方、室
温が前記設定温度に近づく方向に変化して、前記第１の
ゾーンを移行した時、前記運転周波数信号を所定値だけ
変化させるが、前記第２のゾーンを移行した時は前記運
転周波数信号を変化させないよう構成した空気調和機の
制御装置。1. A refrigeration cycle including a compressor, an outdoor coil, a pressure reducer, an indoor coil, etc., a room temperature setting device for setting a room temperature target value, a temperature sensor for detecting the indoor temperature, and the compression by changing the frequency. A frequency conversion device that changes the number of revolutions of the machine, and a control device that gives an operating frequency signal to the frequency conversion device, the control device being detected by the temperature set by the room temperature setting device and the temperature sensor. A second zone in which the variation range of the temperature difference from the room temperature is divided into a plurality of zones with a first temperature width to form a first zone group, and the variation range of the temperature difference is set smaller than the first temperature zone. A second zone group divided into a plurality of temperature ranges is formed, and the room temperature changes in the direction of moving away from the set temperature, and the first zone is formed.
When the zone or the second zone is moved, the operating frequency signal is changed by a predetermined value, respectively, while the room temperature is changed in the direction of approaching the set temperature, and when the first zone is moved, An air conditioner control device configured to change the operating frequency signal by a predetermined value, but not change the operating frequency signal when the second zone is changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60276378A JPH0816543B2 (en) | 1985-12-09 | 1985-12-09 | Control device for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60276378A JPH0816543B2 (en) | 1985-12-09 | 1985-12-09 | Control device for air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62134434A JPS62134434A (en) | 1987-06-17 |
| JPH0816543B2 true JPH0816543B2 (en) | 1996-02-21 |
Family
ID=17568590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60276378A Expired - Fee Related JPH0816543B2 (en) | 1985-12-09 | 1985-12-09 | Control device for air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0816543B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518579A (en) * | 2011-12-13 | 2012-06-27 | Tcl空调器(中山)有限公司 | Compressor Frequency Control Method for Inverter Air Conditioner |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6012532B2 (en) | 2013-04-03 | 2016-10-25 | 三菱電機株式会社 | Touch screen and touch panel provided with the same |
-
1985
- 1985-12-09 JP JP60276378A patent/JPH0816543B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6012532B2 (en) | 2013-04-03 | 2016-10-25 | 三菱電機株式会社 | Touch screen and touch panel provided with the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62134434A (en) | 1987-06-17 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |