JPH07217966A - Controlling method of operation of air conditioner - Google Patents
Controlling method of operation of air conditionerInfo
- Publication number
- JPH07217966A JPH07217966A JP6024882A JP2488294A JPH07217966A JP H07217966 A JPH07217966 A JP H07217966A JP 6024882 A JP6024882 A JP 6024882A JP 2488294 A JP2488294 A JP 2488294A JP H07217966 A JPH07217966 A JP H07217966A
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- temperature
- heating
- compressor
- water valve
- 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.)
- Pending
Links
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、冷媒を循環させる冷凍
サイクルと温水循環回路とを備えた空気調和機の運転制
御方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation control method for an air conditioner having a refrigeration cycle for circulating a refrigerant and a hot water circulation circuit.
【０００２】[0002]
【従来の技術】従来、空気調和機としては、大別して圧
縮機、凝縮器、膨張装置及び蒸発器を有し、冷媒を循環
させる冷凍サイクルと、熱源機、循環ポンプ、放熱器及
び温水弁を有する温水循環回路とを備えたもの、または
冷媒を循環させる冷凍サイクルのみでヒートポンプ方式
を採用したものが多く用いられている。このような空気
調和機は、冷房運転及び暖房運転に加えて、湿度を低下
させる除湿運転を行うことができ、冷房運転時或いは暖
房運転時に室内温度が設定温度に達した時点で除湿運転
に切り換えられ、除湿運転中に室内温度と設定温度との
差が所定値以上となった時に、冷房運転または暖房運転
が開始される。例えば、特開平２−103330号公報に記載
されたものは、冷凍サイクルと温水循環回路とを備え、
冷房運転時には冷凍サイクルのみを運転し、暖房運転時
には温水循環回路のみを運転し、除湿運転時には、冷凍
サイクルと温水循環回路とを同時に運転するものであ
り、除湿運転時においては、室内送風を弱風とし、冷凍
サイクルは常時運転を継続し、温水循環回路の温水弁開
度を調節して加熱量を調整することによって室内温度を
適性に保持しようとするものである。2. Description of the Related Art Conventionally, air conditioners are roughly classified into a compressor, a condenser, an expansion device and an evaporator, and a refrigeration cycle for circulating a refrigerant, a heat source device, a circulation pump, a radiator and a hot water valve. There are often used those having a hot water circulation circuit, or those adopting a heat pump system only in a refrigeration cycle in which a refrigerant is circulated. Such an air conditioner can perform a dehumidifying operation that lowers the humidity in addition to the cooling operation and the heating operation, and switches to the dehumidifying operation when the indoor temperature reaches the set temperature during the cooling operation or the heating operation. When the difference between the room temperature and the set temperature becomes equal to or more than the predetermined value during the dehumidifying operation, the cooling operation or the heating operation is started. For example, the one described in JP-A-2-103330 includes a refrigeration cycle and a hot water circulation circuit,
During cooling operation, only the refrigeration cycle is operated, during heating operation, only the hot water circulation circuit is operated, and during dehumidification operation, the refrigeration cycle and hot water circulation circuit are operated at the same time. By using wind, the refrigeration cycle is constantly operated, and the temperature of the warm water valve of the warm water circulation circuit is adjusted to adjust the amount of heating to maintain the room temperature at an appropriate level.
【０００３】また、特開平３−260539号公報に記載され
たものは、圧縮機、四方弁、室外熱交換器、膨張装置、
室内熱交換器、再熱器を備えた冷凍サイクルから成るヒ
ートポンプ方式の空気調和機では、室内温度検出手段及
び室内湿度検出手段を備え、除湿運転に移行した後、室
内温度及び湿度が所定の範囲内になると、監視モードに
移行して圧縮機をオフさせ、再熱器の加熱をオフさせる
ことにより、過度の湿度低下を防止している。なお、冷
凍サイクルと温水循環回路とを備えた空気調和機におい
ては、監視モードで圧縮機をオフさせるとともに、温水
弁を全閉として室内温度及び湿度を制御する。Further, the one described in Japanese Patent Laid-Open No. 3-260539 has a compressor, a four-way valve, an outdoor heat exchanger, an expansion device,
An indoor heat exchanger, a heat pump type air conditioner consisting of a refrigeration cycle equipped with a reheater, is provided with an indoor temperature detecting means and an indoor humidity detecting means, and after the dehumidifying operation, the indoor temperature and humidity are within a predetermined range. When it comes to the inside, the monitoring mode is entered, the compressor is turned off, and the heating of the reheater is turned off, thereby preventing an excessive decrease in humidity. In an air conditioner including a refrigeration cycle and a hot water circulation circuit, the compressor is turned off in the monitoring mode, and the hot water valve is fully closed to control the room temperature and humidity.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記従
来の空気調和機の運転制御方法においては、温水弁開度
の調節手段としてファジー制御、或いは温度偏差に基づ
いたＰＩＤ制御が用いられているが、何れの制御手段を
用いているにしても、室内温度が設定温度に対して所定
の範囲内になって暖房運転から除湿運転に移行すると、
温水弁を閉じる方向に制御して室内温度のオーバーシュ
ートを防止しているために、冷凍サイクルの冷却量が温
水回路の加熱量を上回ることになって、吹き出し温度が
低下して室内温度が低下し、空調負荷が小さい場合には
暖房運転に移行することがあった。つまり、図４に示す
ように、暖房運転時に、設定温度Ｔs と室内温度Ｔr と
の差が大きいときには温水弁は大きく開いているが、室
内温度Ｔr が設定温度Ｔsに近づいてくると温水弁の開
度は次第に小さくされて、室内温度Ｔr がオーバーシュ
ートしないようにするためであり、ファジー制御でもＰ
ＩＤ制御でも同様の傾向である。そして室内温度Ｔr が
暖房運転から除湿運転への移行点Ｔs −α1 に達すると
冷凍サイクルが始動するのであるが、このとき温水弁の
開度は小さく、放熱器の温度が低くなっているので、そ
の加熱量は冷凍サイクルの冷却量と釣り合わず、吹き出
し温度が低下して室内温度Ｔr が低下する。ここで室内
温度Ｔr が低下すると、温水弁の開度は大きくされるの
であるが、小さい開度から開きはじめるため、室内温度
Ｔr の急峻な低下に追いつかず、室内温度Ｔr が除湿運
転から暖房運転への移行点Ｔs −α2 まで低下して再び
暖房運転に移行してしまう場合があり、運転モードが不
安定になって、室内温度の制御性が悪化するという問題
があった。However, in the above-mentioned conventional operation control method for the air conditioner, fuzzy control or PID control based on temperature deviation is used as the means for adjusting the opening degree of the hot water valve. Whichever control means is used, when the room temperature is within a predetermined range with respect to the set temperature and the heating operation shifts to the dehumidifying operation,
Since the hot water valve is controlled in the closing direction to prevent the indoor temperature from overshooting, the cooling amount of the refrigeration cycle exceeds the heating amount of the hot water circuit, and the blowout temperature drops and the indoor temperature drops. However, when the air conditioning load is small, the heating operation may be started. That is, as shown in FIG. 4, during the heating operation, the hot water valve is wide open when the difference between the set temperature Ts and the room temperature Tr is large, but when the room temperature Tr approaches the set temperature Ts, the hot water valve is opened. This is because the opening is gradually reduced to prevent the indoor temperature Tr from overshooting, and even in the fuzzy control, P
The same tendency occurs in ID control. When the room temperature Tr reaches the transition point Ts-α 1 from the heating operation to the dehumidifying operation, the refrigeration cycle starts, but at this time, the opening of the hot water valve is small and the temperature of the radiator is low. However, the amount of heating does not balance with the amount of cooling in the refrigeration cycle, and the blow-out temperature is lowered and the room temperature Tr is lowered. Here, when the room temperature Tr decreases, the opening degree of the hot water valve is increased. However, since the opening degree starts to be small, the room temperature Tr cannot keep up with the sharp decrease of the room temperature Tr, and the room temperature Tr changes from the dehumidifying operation to the heating operation. There is a problem that the temperature may decrease to the transition point Ts-α 2 and the heating mode may be restarted, the operation mode becomes unstable, and the controllability of the room temperature deteriorates.
【０００５】本発明の目的は、暖房運転から除湿運転に
移行する際の室温変化の特性を向上させることのできる
空気調和機の運転制御方法を提供することである。An object of the present invention is to provide an operation control method for an air conditioner capable of improving the characteristics of room temperature change when shifting from heating operation to dehumidifying operation.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に本発明の空気調和機の運転制御方法は、圧縮機、凝縮
器、膨張装置及び蒸発器を有し、冷媒を循環させる冷凍
サイクルと、熱源機、循環ポンプ、放熱器及び温水弁を
有する温水循環回路とを備えた空気調和機の運転制御方
法であって、暖房運転から除湿運転に移行する際に、予
め設定されたマスク時間の間、温水弁を所定の開度に保
持して温水の流通を確保するとともに冷凍サイクルの停
止状態を継続させ、除湿運転開始時からマスク時間経過
後に冷凍サイクルの運転を開始するものである。In order to achieve the above object, an air conditioner operation control method of the present invention comprises a compressor, a condenser, an expansion device and an evaporator, and a refrigeration cycle for circulating a refrigerant. A method for controlling the operation of an air conditioner comprising a heat source device, a circulation pump, a radiator and a hot water circulation circuit having a hot water valve, wherein when the heating operation is transitioned to the dehumidifying operation, a preset mask time of During this period, the hot water valve is maintained at a predetermined opening to ensure the flow of hot water, the refrigeration cycle is stopped, and the refrigeration cycle is started after the mask time has elapsed from the start of the dehumidification operation.
【０００７】[0007]
【作用】上記構成により、暖房運転から除湿運転に移行
して除湿運転が開始された時には、除湿運転開始から予
め設定したマスク時間の間、温水弁の開度を予め設定し
た設定開度に保持して所定の温水流量を放熱器に流通さ
せる一方、圧縮機をオフして冷凍サイクルの運転を停止
した状態を保持しているから、室内温度が設定温度に近
づくにつれて温水弁の開度が全閉側に調節されて低下し
つづけていた暖房用熱交換器の温度を高く保持すること
ができ、吹き出し温度が低下せず、室内温度が低下する
ことなく、設定温度近傍に保持される。With the above structure, when the heating operation is switched to the dehumidification operation and the dehumidification operation is started, the opening degree of the hot water valve is maintained at the preset opening degree for a preset mask time from the start of the dehumidification operation. While maintaining the condition that the compressor is turned off and the operation of the refrigeration cycle is stopped while the specified flow rate of hot water is passed through the radiator, the opening degree of the hot water valve becomes full as the indoor temperature approaches the set temperature. The temperature of the heating heat exchanger, which has been adjusted to the closed side and kept decreasing, can be kept high, the blowing temperature does not decrease, and the indoor temperature does not decrease, and the temperature is maintained near the set temperature.
【０００８】[0008]
【実施例】本発明の実施例を、図を参照して説明する。
図３において本発明を適用する空気調和機の概略構成を
説明すると、室内ユニット１内に、冷房用熱交換器即ち
蒸発器２と、暖房用熱交換器（放熱器）３とが空気流路
に上流側から順に配設され、その下流位置に室内ファン
４が設置されており、蒸発器２と暖房用熱交換器３の下
方にドレンパン５が設置されている。蒸発器２と、室外
ユニット６内に配設された圧縮機７、室外ファン11で空
冷される凝縮器８、キャピラリチューブ（膨張装置）９
が冷媒配管10で順次接続された冷媒回路で冷凍サイクル
が構成され、圧縮機７で圧縮された冷媒は凝縮器８で液
化し、キャピラリチューブ９で断熱膨張した後、蒸発器
２で蒸発し、蒸発器２の周囲の空気と熱交換する。暖房
用熱交換器３は、温水熱源機12内に設置された水加熱用
熱交換器13に、循環ポンプ14及び温水弁（流量制御弁）
15を介して温水配管16で接続されて温水循環回路が形成
されている。流量制御弁15はステッピングモータで駆動
されてステップ数で開度が定められるものであり、暖房
用熱交換器３の入口側に接続されている。Embodiments of the present invention will be described with reference to the drawings.
Referring to FIG. 3, a schematic configuration of an air conditioner to which the present invention is applied will be described. In the indoor unit 1, a cooling heat exchanger, that is, an evaporator 2 and a heating heat exchanger (radiator) 3 are provided in an air flow path. Is arranged in order from the upstream side, the indoor fan 4 is installed at the downstream position, and the drain pan 5 is installed below the evaporator 2 and the heat exchanger 3 for heating. The evaporator 2, the compressor 7 arranged in the outdoor unit 6, the condenser 8 air-cooled by the outdoor fan 11, the capillary tube (expansion device) 9
A refrigeration cycle is constituted by a refrigerant circuit sequentially connected by a refrigerant pipe 10, and the refrigerant compressed by the compressor 7 is liquefied by the condenser 8, adiabatically expanded by the capillary tube 9, and then evaporated by the evaporator 2. Heat is exchanged with the air around the evaporator 2. The heating heat exchanger 3 includes a water heating heat exchanger 13 installed in the hot water heat source device 12, a circulation pump 14 and a hot water valve (flow control valve).
A hot water circulation circuit is formed by connecting the hot water pipes 16 via 15. The flow rate control valve 15 is driven by a stepping motor and the opening degree is determined by the number of steps, and is connected to the inlet side of the heating heat exchanger 3.
【０００９】制御装置17は、室内温度センサ等の室内温
度検知手段と湿度検知手段とを備えた検出装置18で検出
された室内温度Ｔr 及び室内湿度Ｈr と、設定装置19で
設定された設定温度Ｔs 及び設定湿度Ｈs とが入力さ
れ、室内ファン４と、冷却回路の圧縮機７と室外ファン
11、及び温水循環回路の温水熱源機12と循環ポンプ14及
び温水弁15に制御信号を出力するものであり、冷房運転
時には、室内ファン４と圧縮機７及び室外ファン11が運
転され、温水熱源機12と循環ポンプ14及び温水弁15がオ
フされる。暖房運転時には、室内ファン４と、温水循環
回路の温水熱源機12と循環ポンプ14が運転され、温水弁
15の開度θが設定温度Ｔs と室内温度Ｔr との温度差及
び室内温度変化率に基づいてフアジー制御、或いは温度
偏差に基づいたＰＩＤ制御により調節され、冷却回路の
圧縮機７と室外ファン11はオフされる。除湿運転時に
は、室内ファン４と、冷却回路の圧縮機７と室外ファン
11及び温水循環回路の温水熱源機12と循環ポンプ14、温
水弁15がオンされる。The control device 17 has an indoor temperature Tr and an indoor humidity Hr detected by a detection device 18 having an indoor temperature detection means such as an indoor temperature sensor and a humidity detection means, and a set temperature set by a setting device 19. Ts and the set humidity Hs are input, and the indoor fan 4, the compressor 7 of the cooling circuit, and the outdoor fan are input.
11, and outputs a control signal to the hot water heat source device 12 of the hot water circulation circuit, the circulation pump 14 and the hot water valve 15. During the cooling operation, the indoor fan 4, the compressor 7 and the outdoor fan 11 are operated to supply the hot water heat source. The machine 12, the circulation pump 14 and the hot water valve 15 are turned off. During the heating operation, the indoor fan 4, the hot water heat source device 12 and the circulation pump 14 of the hot water circulation circuit are operated, and the hot water valve
The opening degree θ of 15 is adjusted by the fuzzy control based on the temperature difference between the set temperature Ts and the indoor temperature Tr and the indoor temperature change rate, or by the PID control based on the temperature deviation, and the compressor 7 and the outdoor fan 11 of the cooling circuit are adjusted. Is turned off. During the dehumidifying operation, the indoor fan 4, the compressor 7 in the cooling circuit, and the outdoor fan
11, the hot water heat source device 12 of the hot water circulation circuit, the circulation pump 14, and the hot water valve 15 are turned on.
【００１０】次に、制御動作について説明すると、設定
温度Ｔs と検出された室内温度Ｔrとの差ΔＴ＝Ｔs −
Ｔr を求め、温度差ΔＴが第１設定値α（α＞０、例え
ばα＝２度）以上の時は暖房運転を行い、温度差ΔＴが
第２設定値β（β＜０、例えばβ＝−３度）以下の時は
冷房運転を行うものであり、温度差ΔＴが第１設定値α
と第２設定値βとの間にあり（α＞ΔＴ＞β、即ち３＞
ΔＴ＞−２）、検出された室内湿度Ｈr が設定湿度Ｈs
より所定値γ（例えばγ＝５％）を引いた値を超える
（Ｈr ＞Ｈs −γ、即ちＨr ＞Ｈs −５）時は、除湿運
転に移行する。除湿運転時に、室内湿度Ｈr がＨs −γ
以下の時は監視モードに移行して冷凍サイクルの圧縮機
７がオフされ、温水循環回路の温水弁15が全閉となる。
なお、第１設定値αは、現在の運転モードが暖房の場合
には例えばα＝２度、現在の運転モードが除湿の場合に
は例えばα＝３度と可変してヒステリシスを設け、暖房
と除湿との間で運転モードが頻繁に変わることを防止す
ることが好ましく、同様に、第２設定値βも現在が冷房
の場合には例えばβ＝−３度、現在が除湿の場合には例
えばβ＝−４度と可変することが好ましい。Next, the control operation will be described. The difference ΔT = Ts − between the set temperature Ts and the detected room temperature Tr.
Tr is calculated. When the temperature difference ΔT is equal to or larger than the first set value α (α> 0, for example α = 2 degrees), heating operation is performed, and the temperature difference ΔT is set to the second set value β (β <0, for example β = (-3 degrees) or less, the cooling operation is performed, and the temperature difference ΔT is the first set value α.
And the second set value β (α>ΔT> β, that is, 3>
ΔT> -2), the detected indoor humidity Hr is the set humidity Hs
When it exceeds a value obtained by subtracting a predetermined value γ (for example, γ = 5%) (Hr> Hs −γ, that is, Hr> Hs −5), the dehumidifying operation is started. During the dehumidifying operation, the indoor humidity Hr becomes Hs-γ.
In the following cases, the monitoring mode is entered, the compressor 7 of the refrigeration cycle is turned off, and the hot water valve 15 of the hot water circulation circuit is fully closed.
It should be noted that the first set value α is changed to, for example, α = 2 degrees when the current operation mode is heating, and is set to, for example, α = 3 degrees when the current operation mode is dehumidification to provide hysteresis. It is preferable to prevent the operation mode from frequently changing between dehumidification, and similarly, the second set value β is, for example, β = −3 degrees when the present is cooling, and when the present dehumidification is, for example, It is preferable to vary β = −4 degrees.
【００１１】図１のフローチャートを参照して上記運転
区分に基づく制御動作の一例について説明すると、空気
調和機の運転を開始すると、温度差ΔＴが第１設定値α
（α＝２度）と第２設定値β（β＝−３度）との間にあ
る（α＞ΔＴ＞β）か否かを判定する、即ち室内温度Ｔ
r が設定温度Ｔs に対してＴs −β＞Ｔr ＞Ｔs −α
（Ｔs ＋３＞Ｔr ＞Ｔs −２）が成立する範囲内にある
か否かを判定し、室内温度Ｔr がこの範囲内にある場合
は、室内湿度Ｈr が設定湿度Ｈs よりも所定値γ以上低
い（Ｈr ≦Ｈs −γ、即ちＨr ≦Ｈs −５）か否かを判
定し、低い場合には監視モードに移行し、圧縮機７をオ
フして冷凍サイクルの運転を停止し、温水弁15を全閉θ
o として温水循環回路の温水の流通を停止させる。An example of the control operation based on the above operation classification will be described with reference to the flowchart of FIG. 1. When the operation of the air conditioner is started, the temperature difference ΔT is the first set value α.
It is determined whether or not (α>ΔT> β) between (α = 2 degrees) and the second set value β (β = −3 degrees), that is, the room temperature T.
r is Ts-β>Tr> Ts-α with respect to the set temperature Ts
It is determined whether or not (Ts + 3>Tr> Ts-2) is satisfied, and when the indoor temperature Tr is within this range, the indoor humidity Hr is lower than the set humidity Hs by a predetermined value γ or more. (Hr ≤ Hs -γ, that is, Hr ≤ Hs -5) is determined, and if it is low, the mode shifts to the monitoring mode, the compressor 7 is turned off to stop the operation of the refrigeration cycle, and the hot water valve 15 is turned on. Fully closed θ
Stop the flow of hot water in the hot water circulation circuit as o.
【００１２】室内湿度Ｈr が設定湿度Ｈs に対してＨr
＞Ｈs −γ（Ｈr ＞Ｈs −５）となれば、除湿運転に移
行する。この時、暖房運転から除湿運転に移行するか否
かを判定し、暖房運転から除湿運転に移行する場合は、
除湿運転開始時から予め設定したマスク時間Ｔm の間、
温水弁15の開度θを予め設定した設定開度θm （θm ＞
θo ）に固定して所定の温水流量を確保するとともに、
冷凍サイクルの圧縮機７をオフして冷凍サイクルの運転
停止を保持する。マスク時間Ｔm 経過後、圧縮機７をオ
ンして冷凍サイクルの運転を行うとともに、温水弁15の
開度をファジー制御またはＰＩＤ制御することにより、
温水循環回路の温水流量を調節して加熱量を制御する。
暖房運転以外から除湿運転に移行する場合、例えば冷房
運転から除湿運転に移行する場合は、圧縮機７をオンし
て冷凍サイクルの運転を行うとともに、温水弁15の開度
を制御することにより、加熱量を制御する。The indoor humidity Hr is Hr with respect to the set humidity Hs.
When> Hs-γ (Hr> Hs-5), the dehumidifying operation is started. At this time, it is determined whether or not the heating operation is switched to the dehumidification operation, and when the heating operation is switched to the dehumidification operation,
During the preset mask time Tm from the start of dehumidification operation,
The opening θ of the hot water valve 15 is set in advance θm (θm>
(θo) to secure a specified hot water flow rate,
The compressor 7 of the refrigeration cycle is turned off to keep the refrigeration cycle stopped. After the mask time Tm elapses, the compressor 7 is turned on to operate the refrigeration cycle, and the opening degree of the hot water valve 15 is fuzzy-controlled or PID-controlled,
The amount of heating is controlled by adjusting the flow rate of hot water in the hot water circulation circuit.
When shifting from a mode other than the heating mode to the dehumidifying mode, for example, when shifting from the cooling mode to the dehumidifying mode, the compressor 7 is turned on to perform the refrigeration cycle, and by controlling the opening degree of the hot water valve 15, Control the amount of heating.
【００１３】上述の構成により、暖房運転から除湿運転
に移行して除湿運転が開始された時には、除湿運転開始
から予め設定したマスク時間Ｔm の間、温水弁15の開度
θを予め設定した設定開度θm に保持して所定の温水流
量を暖房用熱交換器３に流通させる一方、圧縮機７をオ
フして冷凍サイクルの運転を停止した状態を保持してい
るから、室内温度Ｔr が設定温度Ｔs に近づくにつれて
温水弁15の開度θが全閉θo 側に調節されて低下しつづ
けていた暖房用熱交換器３の温度を高く保持することが
でき（図２参照）、吹き出し温度が低下せず、室内温度
Ｔr が低下することなく、設定温度近傍に保持される。
なお、冷房運転から除湿運転に移行して除湿運転が開始
された時には、冷凍サイクルの運転に加えて温水循環回
路の運転が開始されることになるから、室内温度Ｔr が
下がる恐れがない。With the above configuration, when the heating operation is switched to the dehumidifying operation and the dehumidifying operation is started, the opening degree θ of the hot water valve 15 is set in advance for a preset mask time Tm from the start of the dehumidifying operation. The indoor temperature Tr is set because the opening degree θm is maintained and a predetermined hot water flow rate is circulated to the heating heat exchanger 3 while the compressor 7 is turned off and the refrigeration cycle operation is stopped. The opening θ of the hot water valve 15 is adjusted to the fully closed θo side as it approaches the temperature Ts, and the temperature of the heating heat exchanger 3 which keeps decreasing can be kept high (see FIG. 2), and the blowing temperature becomes The temperature does not decrease, and the room temperature Tr does not decrease, and the temperature is maintained near the set temperature.
When the dehumidifying operation is started by shifting from the cooling operation to the dehumidifying operation, the operation of the hot water circulation circuit is started in addition to the operation of the refrigeration cycle, so that the room temperature Tr is not likely to drop.
【００１４】室内温度Ｔr が設定温度Ｔs に対してＴs
−β＞Ｔr ＞Ｔs −α （Ｔs ＋３＞Ｔr ＞Ｔs −２）
が成立する範囲内に存在しない場合は、温度差ΔＴが第
２設定値β（β＝−３度）以下（ΔＴ≦β、即ちΔＴ≦
−３）であるか否かを判定する、即ち室内温度Ｔr が設
定温度Ｔs と第２設定値β（β＝−３度）との差以上
（Ｔr ≧Ｔs −β、即ちＴr ≧Ｔs ＋３）であるか否か
を判定する。温度差ΔＴが第２設定値β（β＝−３度）
以下である、即ち、Ｔr ≧Ｔs −β（Ｔr ≧Ｔs ＋３）
が成立する場合は冷房運転に移行し、圧縮機７をオンし
て冷凍サイクルの運転を行い、温水弁15を全閉として温
水循環回路の温水の流通を停止させる。温度差ΔＴが第
２設定値β（β＝−３度）以下ではない、即ち、Ｔr ≧
Ｔs −β（Ｔr ≧Ｔs ＋３）が成立しない場合は、温度
差ΔＴが第１設定値α（α＝２度）以上となるから暖房
運転に移行し、圧縮機７をオフして冷凍サイクルの運転
を停止し、温水弁15の開度をファジー制御またはＰＩＤ
制御することにより、温水循環回路の温水流量を調節し
て加熱量を制御する。なお、冷凍サイクルの圧縮機７に
インバータ制御（回転数制御）を採用することによっ
て、一層精度の高い制御を行うことが可能となる。The room temperature Tr is Ts with respect to the set temperature Ts.
-Β>Tr> Ts-α (Ts + 3>Tr> Ts-2)
If the temperature difference ΔT does not exist within the range in which is satisfied, the temperature difference ΔT is not more than the second set value β (β = −3 degrees) (ΔT ≦ β, that is, ΔT ≦
-3) is determined, that is, the room temperature Tr is not less than the difference between the set temperature Ts and the second set value β (β = −3 degrees) (Tr ≧ Ts −β, that is, Tr ≧ Ts +3). Or not. The temperature difference ΔT is the second set value β (β = −3 degrees)
The following is true: Tr ≧ Ts −β (Tr ≧ Ts +3)
When is satisfied, the operation shifts to the cooling operation, the compressor 7 is turned on to perform the refrigeration cycle operation, and the hot water valve 15 is fully closed to stop the flow of hot water in the hot water circulation circuit. The temperature difference ΔT is not less than or equal to the second set value β (β = −3 degrees), that is, Tr ≧
If Ts-β (Tr ≧ Ts +3) is not satisfied, the temperature difference ΔT becomes equal to or larger than the first set value α (α = 2 degrees), the heating operation is started, the compressor 7 is turned off, and the refrigerating cycle is started. Stop the operation and open the hot water valve 15 by fuzzy control or PID
By controlling, the hot water flow rate of the hot water circulation circuit is adjusted to control the heating amount. By adopting inverter control (rotation speed control) for the compressor 7 of the refrigeration cycle, it is possible to perform control with higher accuracy.
【００１５】[0015]
【発明の効果】本発明は、上述のとおり構成されている
から次に述べる効果を奏する。暖房運転から除湿運転に
移行して除湿運転が開始された時には、除湿運転開始か
ら予め設定したマスク時間の間、温水弁の開度を予め設
定した設定開度に保持して所定の温水流量を放熱器に流
通させる一方、圧縮機をオフして冷凍サイクルの運転を
停止した状態を保持しているから、室内温度が設定温度
に近づくにつれて温水弁の開度が全閉側に調節されて低
下しつづけていた暖房用熱交換器の温度を高く保持する
ことができ、吹き出し温度が低下せず、室内温度が低下
することなく、設定温度近傍に保持される。Since the present invention is constructed as described above, it has the following effects. When the heating operation is switched to the dehumidifying operation and the dehumidifying operation is started, the opening degree of the hot water valve is maintained at the preset setting opening degree for a preset mask time from the start of the dehumidifying operation to maintain a predetermined hot water flow rate. While circulating the heat to the radiator, the compressor is turned off and the operation of the refrigeration cycle is stopped, so the opening of the hot water valve is adjusted to the fully closed side and decreases as the room temperature approaches the set temperature. The temperature of the heating heat exchanger, which has been continuously maintained, can be maintained at a high temperature, the blowout temperature does not decrease, and the indoor temperature does not decrease, and the temperature is maintained near the set temperature.
【図１】 本発明に係る運転制御方法のフローチャート
である。FIG. 1 is a flowchart of an operation control method according to the present invention.
【図２】 本発明に係る運転制御方法のタイムチャート
である。FIG. 2 is a time chart of an operation control method according to the present invention.
【図３】 本発明を適用する空気調和機の一例を示す概
略構成図である。FIG. 3 is a schematic configuration diagram showing an example of an air conditioner to which the present invention is applied.
【図４】 従来の運転制御方法のタイムチャートであ
る。FIG. 4 is a time chart of a conventional operation control method.
１ 室内ユニット、２ 冷房用熱交換器（蒸発器） ３ 暖房用熱交換器（放熱器）、４ 室内ファン、５
ドレンパン ６ 室外ユニット、７ 圧縮機、８ 凝縮器 ９ キャピラリチューブ（膨張装置）、10 冷媒配管、
11 室外ファン 12 温水熱源機、13 水加熱用熱交換器、14 循環ポン
プ 15 流量制御弁（温水弁）、16 温水配管、17 制御装
置、18 検出装置 19 設定装置1 Indoor Unit, 2 Cooling Heat Exchanger (Evaporator) 3 Heating Heat Exchanger (Radiator), 4 Indoor Fan, 5
Drain pan 6 Outdoor unit, 7 Compressor, 8 Condenser 9 Capillary tube (expansion device), 10 Refrigerant piping,
11 Outdoor fan 12 Hot water heat source device, 13 Water heating heat exchanger, 14 Circulation pump 15 Flow control valve (hot water valve), 16 Hot water pipe, 17 Control device, 18 Detection device 19 Setting device
Claims (1)
有し、冷媒を循環させる冷凍サイクルと、熱源機、循環
ポンプ、放熱器及び温水弁を有する温水循環回路とを備
えた空気調和機の運転制御方法であって、暖房運転から
除湿運転に移行する際に、予め設定されたマスク時間の
間、温水弁を所定の開度に保持して温水の流通を確保す
るとともに冷凍サイクルの停止状態を継続させ、除湿運
転開始時からマスク時間経過後に冷凍サイクルの運転を
開始することを特徴とする空気調和機の運転制御方法。1. An air conditioner having a compressor, a condenser, an expansion device and an evaporator, a refrigeration cycle for circulating a refrigerant, and a hot water circulation circuit having a heat source device, a circulation pump, a radiator and a hot water valve. In the operation control method of the machine, when shifting from the heating operation to the dehumidifying operation, the hot water valve is held at a predetermined opening for a preset mask time to secure the flow of hot water and to cool the refrigeration cycle. An operation control method for an air conditioner, characterized in that the operation of a refrigeration cycle is started after a mask time has elapsed from the start of dehumidification operation, while continuing the stopped state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6024882A JPH07217966A (en) | 1994-01-28 | 1994-01-28 | Controlling method of operation of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6024882A JPH07217966A (en) | 1994-01-28 | 1994-01-28 | Controlling method of operation of air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07217966A true JPH07217966A (en) | 1995-08-18 |
Family
ID=12150565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6024882A Pending JPH07217966A (en) | 1994-01-28 | 1994-01-28 | Controlling method of operation of air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07217966A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470024A (en) * | 2019-08-04 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
-
1994
- 1994-01-28 JP JP6024882A patent/JPH07217966A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470024A (en) * | 2019-08-04 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
| CN110470024B (en) * | 2019-08-04 | 2021-12-21 | 重庆海尔空调器有限公司 | Control method and device for defrosting of air conditioner and air conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112066521B (en) | Control system and method for low-load dehumidification precise air conditioner | |
| JP2007100699A (en) | Method of controlling variable capacity compressor of air conditioner | |
| JP2000205630A (en) | Control method for air conditioner | |
| JPH10197028A (en) | Air conditioner | |
| JP2624171B2 (en) | Air conditioner operation control method | |
| JPH07217966A (en) | Controlling method of operation of air conditioner | |
| JPH10185370A (en) | Defrosting operation changing device and method of air conditioner | |
| JPH0694310A (en) | Hot gas bypass circuit control method for refrigerating circuit and device thereof | |
| JPH09280629A (en) | Method for controlling air conditioner and apparatus therefor | |
| JP3046740B2 (en) | Expansion mechanism added control type refrigeration system | |
| JPH0763392A (en) | Controller for air conditioner | |
| JP2001241779A (en) | Refrigerant flow rate controller for air conditioner | |
| JP2531332B2 (en) | Dehumidifying operation method of air conditioner | |
| JP3367329B2 (en) | Air conditioning controller for electric vehicles | |
| JPH08276720A (en) | Air conditioner for vehicle | |
| JPH09138024A (en) | Air conditioner | |
| JP3748620B2 (en) | Air conditioner | |
| JPH09159292A (en) | Controller for air conditioner | |
| CN117346250B (en) | Double-working-condition air conditioning unit and control method thereof | |
| KR100502310B1 (en) | Method for setting temperature program logic for controlling a motor of outdoor of air-conditioner | |
| JP2002195676A (en) | Air conditioner | |
| JP2548662Y2 (en) | Environmental test equipment | |
| JPH0755233A (en) | Method for controlling operation of air conditioner | |
| JPH0618074A (en) | Controlling method for air conditioner | |
| JP2002061994A (en) | Air conditioner |