JPH10267356A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPH10267356A JPH10267356A JP9090215A JP9021597A JPH10267356A JP H10267356 A JPH10267356 A JP H10267356A JP 9090215 A JP9090215 A JP 9090215A JP 9021597 A JP9021597 A JP 9021597A JP H10267356 A JPH10267356 A JP H10267356A
- Authority
- JP
- Japan
- Prior art keywords
- room temperature
- valve
- set temperature
- air conditioner
- heat exchanger
- 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.)
- Granted
Links
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Air Conditioning Control Device (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は複数パスの室内熱
交換器を有する空気調和機の冷房・除湿（ドライ）時に
おける室温制御技術に係り、特に詳しくは室内熱交換器
の容量を可変し、室内の相対湿度を下げて不快感を抑え
るようにした空気調和機に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a room temperature control technique for cooling and dehumidifying (drying) an air conditioner having a plurality of indoor heat exchangers, and more particularly, to changing the capacity of an indoor heat exchanger. The present invention relates to an air conditioner in which the relative humidity in a room is reduced to suppress discomfort.
【０００２】[0002]
【従来の技術】この種の空気調和機は、例えば図６に示
すように、圧縮機１、四方弁２、２パス構造の室内熱交
換器３、室外熱交換器４および毛細管（キャピラリチュ
ーブ）５等からなる冷凍サイクルを有する。2. Description of the Related Art As shown in FIG. 6, for example, an air conditioner of this type includes a compressor 1, a four-way valve 2, a two-pass indoor heat exchanger 3, an outdoor heat exchanger 4, and a capillary tube (capillary tube). 5 refrigeration cycle.
【０００３】暖房運転時には、四方弁２を切り替えて冷
媒を図６の実線矢印にしたがって循環させるとともに、
リモコンの設定風量等に応じて室内側ファンを回転制御
し、室内熱交換器（凝縮器）３で熱交換した温風を室内
に吹き出す一方、室内温度とリモコンの設定温度との差
に応じた所定運転周波数で圧縮機１を運転して室温をコ
ントロールする。冷房運転時には、四方弁２を切り替え
て冷媒を図６の波線矢印にしたがって循環させるととも
に、リモコンの設定風量等に応じて室内側ファンを回転
制御し、室内熱交換器（蒸発器）３で熱交換した冷風を
室内に吹き出す一方、室内温度とリモコンの設定温度と
の差に応じた所定運転周波数で圧縮機１を運転して室温
をコントロールする。During the heating operation, the four-way valve 2 is switched to circulate the refrigerant according to the solid line arrows in FIG.
The rotation of the indoor fan is controlled in accordance with the set air volume of the remote controller and the like, and the warm air exchanged by the indoor heat exchanger (condenser) 3 is blown into the room, while the difference between the indoor temperature and the set temperature of the remote controller is adjusted. The compressor 1 is operated at a predetermined operation frequency to control the room temperature. At the time of cooling operation, the four-way valve 2 is switched to circulate the refrigerant according to the dashed arrow in FIG. 6, and the rotation of the indoor fan is controlled according to the air volume set by the remote controller. While the exchanged cold air is blown into the room, the compressor 1 is operated at a predetermined operation frequency corresponding to the difference between the room temperature and the set temperature of the remote controller to control the room temperature.
【０００４】前記２パスの室内熱交換器３は、冷媒を２
系統に分け、かつ表面積を広くする形、例えばラムダ形
になっており、室内機のコンパト化を可能にするととも
に、広い吸込み面積を確保してより豊かな風量を得るこ
とができ、つまりパワフルな送風を可能とし、室内を速
やかに快適環境とすることができる。The two-pass indoor heat exchanger 3 supplies the refrigerant
It is divided into systems and has a shape that widens the surface area, for example, a lambda shape, enables the indoor unit to be compact, and secures a wide suction area to obtain a richer air volume, that is, a powerful The air can be blown, and the room can be quickly made a comfortable environment.
【０００５】[0005]
【発明が解決しようとする課題】ところで、前記空気調
和機にあっては、冷房・除湿（ドライ）運転を選択する
と、室内の湿度を下げることができる。なお、除湿運転
（ドライ運転）では冷房運転の弱運転が行われる（いわ
ゆる簡易冷房運転が行われる）。By the way, in the air conditioner, when the cooling / dehumidifying (dry) operation is selected, the indoor humidity can be reduced. In the dehumidifying operation (dry operation), a weak operation of the cooling operation is performed (so-called simple cooling operation is performed).
【０００６】しかし、この冷房・除湿運転を選択した場
合、室内熱交換器３の温度が露点温度に達していない
と、室温のみが低下するだけ、室内の相対湿度が上昇
し、不快感を与えることがあった。すなわち、室内熱交
換器３による顕熱変化の割合に比べて潜熱変化の割合が
小さく、つまり顕熱のみが発揮され、室温の低下に伴っ
て相対湿度が上昇するために体感的に肌寒さを感じるこ
とになるからである。しかも、除湿運転時には室温がゆ
っくり低下し、設定温度に達するまで時間がかかるた
め、その間相対湿度の降下が小さく、長時間快適性が損
なわれることになる。However, when the cooling / dehumidifying operation is selected, if the temperature of the indoor heat exchanger 3 does not reach the dew point temperature, only the room temperature is reduced, the relative humidity in the room is increased, and discomfort is given. There was something. That is, the ratio of the latent heat change is smaller than the ratio of the sensible heat change by the indoor heat exchanger 3, that is, only the sensible heat is exerted, and the relative humidity increases as the room temperature decreases. Because you will feel it. In addition, the room temperature slowly drops during the dehumidifying operation, and it takes time to reach the set temperature. During this time, the relative humidity does not drop so much and the comfort is impaired for a long time.
【０００７】例えば、室内熱交換器３の温度が露点温度
に達していないと、図７に示すように、室温は低下する
が、冷房・除湿運転の開始から所定時間Ａの間に室内の
相対湿度が急激に上昇し、この後室温は低下するもの
の、除湿率が低いために相対湿度の下がりが小さい。ま
た、室温が設定温度付近になると、冷房・除湿運転の室
温制御においては圧縮機１の運転周波数を低周波数にす
るため（顕熱変化および潜熱変化を小さくするため）、
室温を設定温度に保つことができるが、除湿率がより低
くなり、結果相対湿度の上昇につながる。特に、室温と
設定温度との差が小さい程、例えば室温３０℃に対して
設定温度が２７℃、あるいは室温２６℃に対して設定温
度が２４℃（梅雨時や秋の長雨時）である場合、その相
対湿度の上昇が顕著に現れる。すなわち、前述したよう
に、室温がすぐに設定温度となり、圧縮機１の運転周波
数が低周波数になるからである。[0007] For example, if the temperature of the indoor heat exchanger 3 does not reach the dew point temperature, the room temperature drops as shown in FIG. Although the humidity rises rapidly and then the room temperature falls, the fall in relative humidity is small due to the low dehumidification rate. Also, when the room temperature is near the set temperature, in the room temperature control of the cooling / dehumidifying operation, the operating frequency of the compressor 1 is set to a low frequency (to reduce the sensible heat change and the latent heat change).
Room temperature can be kept at the set temperature, but the dehumidification rate will be lower, resulting in an increase in relative humidity. In particular, when the difference between the room temperature and the set temperature is smaller, for example, the set temperature is 27 ° C. for a room temperature of 30 ° C., or the set temperature is 24 ° C. for a room temperature of 26 ° C. (during rainy season or autumn long rain) , The rise of the relative humidity appears remarkably. That is, as described above, the room temperature immediately becomes the set temperature, and the operating frequency of the compressor 1 becomes low.
【０００８】この発明は前記課題に鑑みなされたもので
あり、その目的は冷房・除湿（ドライ）運転時に室内の
相対湿度を下げて不快感を抑えることができ、ひいては
快適環境の向上を図ることができるようにした空気調和
機を提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to reduce the relative humidity in a room during a cooling / dehumidifying (dry) operation, thereby suppressing discomfort, and thereby improving a comfortable environment. An object of the present invention is to provide an air conditioner that can perform the above.
【０００９】[0009]
【課題を解決するための手段】前記目的を達成するため
に、この発明は冷凍サイクルを構成する室内熱交換器を
複数パス構造とし、該室内熱交換器に冷媒を循環して室
温制御を行い、室温を設定温度にコントロールする空気
調和機において、前記複数パスのうち、少なくとも１パ
スの冷媒入力側に弁を設け、前記空気調和機の冷房・除
湿（ドライ）運転時に、少なくとも前記室温および設定
温度に応じて前記弁を制御し、前記室内熱交換器の容量
を可変するようにしたことを特徴としている。In order to achieve the above object, the present invention provides a refrigerating cycle having an indoor heat exchanger having a plurality of paths and circulating a refrigerant through the indoor heat exchanger to control room temperature. An air conditioner for controlling a room temperature to a set temperature, wherein a valve is provided on a refrigerant input side of at least one of the plurality of passes, and at least the room temperature and the setting are set during a cooling / dehumidifying (dry) operation of the air conditioner. The valve is controlled in accordance with the temperature to change the capacity of the indoor heat exchanger.
【００１０】この発明の空気調和機は、前記複数パスの
うち、少なくとも１パスの冷媒入力側に弁を設け、前記
空気調和機の冷房・除湿（ドライ）運転時に、前記室温
が前記設定温度に所定値を加算した値（補正設定温度）
以上であるときには前記弁を開いた状態とし、前記室温
が前記補正設定温度より低いときには前記弁を閉じて前
記室内熱交換器の容量を減らすようにしたことを特徴と
している。In the air conditioner of the present invention, a valve is provided on a refrigerant input side of at least one of the plurality of passes, and the room temperature is set to the set temperature during a cooling / dehumidifying (dry) operation of the air conditioner. Value obtained by adding a predetermined value (correction set temperature)
In the above case, the valve is opened, and when the room temperature is lower than the correction set temperature, the valve is closed to reduce the capacity of the indoor heat exchanger.
【００１１】この発明は冷凍サイクルを構成する室内熱
交換器を２パス構造とし、該室内熱交換器に冷媒を循環
して室温制御を行い、室温を設定温度にコントロールす
る空気調和機において、前記２パスのうちの一方のパス
の冷媒入力側に弁を設け、前記空気調和機の冷房・除湿
（ドライ）運転時に、前記室温が前記設定温度に所定値
を加算した値（補正設定温度）以上であるときには前記
弁を開いた状態とし、前記室温が前記補正設定温度より
低いときには前記弁を閉じて前記室内熱交換器の容量を
減らし、潜熱変化優先の運転に切り替えるようにしたこ
とを特徴としている。[0011] The present invention relates to an air conditioner in which an indoor heat exchanger constituting a refrigeration cycle has a two-pass structure, circulates a refrigerant through the indoor heat exchanger to control room temperature, and controls room temperature to a set temperature. A valve is provided on the refrigerant input side of one of the two passes, and the room temperature is equal to or more than a value obtained by adding a predetermined value to the set temperature (correction set temperature) during the cooling / dehumidifying (dry) operation of the air conditioner. When is, the valve is in an open state, and when the room temperature is lower than the correction set temperature, the valve is closed to reduce the capacity of the indoor heat exchanger, and the operation is switched to a latent heat change priority operation. I have.
【００１２】この場合、前記弁を閉じた後、前記室温が
前記補正設定温度に所定値を加算した値以上であるとき
には前記弁を開くようにすると好ましい。また、前記弁
は電磁弁あるいは膨張弁であり、該電磁弁あるいは膨張
弁を当該空気調和機の制御手段で制御するとよい。In this case, it is preferable that after the valve is closed, the valve is opened when the room temperature is equal to or higher than a value obtained by adding a predetermined value to the correction set temperature. Further, the valve is an electromagnetic valve or an expansion valve, and the electromagnetic valve or the expansion valve may be controlled by a control unit of the air conditioner.
【００１３】[0013]
【発明の実施の形態】以下、この発明の実施の形態を図
１ないし図５を参照して説明する。なお、図１および図
２中、図６と同一部分および相当部分には同一符号を付
して重複説明を省略する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 and 2, the same parts and corresponding parts as those in FIG. 6 are denoted by the same reference numerals, and redundant description will be omitted.
【００１４】図１および図２において、この発明の空気
調和機は、２パス構造の室内熱交換器３の一方のパス側
３ｂの冷媒入力側に電磁弁（弁）１０を備え、冷房・除
湿（ドライ）運転時において室温および設定温度に応じ
てその電磁弁１０を開閉制御する。1 and 2, the air conditioner of the present invention is provided with an electromagnetic valve (valve) 10 on the refrigerant input side of one pass side 3b of an indoor heat exchanger 3 having a two-pass structure, and performs cooling and dehumidification. During (dry) operation, the solenoid valve 10 is controlled to open and close according to the room temperature and the set temperature.
【００１５】室温がリモコン１１の設定温度に所定値を
加算した値（補正設定温度）以上であるときにはその電
磁弁１０を開け、顕熱変化優先の運転を行い、室温がそ
の補正設定温度より低いときにはその電磁弁１０を閉じ
て室内熱交換器３の１パス側３ａのみに冷媒を循環し、
室内熱交換器３の容量を減らし、つまり低圧側を下げて
潜熱変化優先の運転を行う。なお、顕熱変化優先の運転
では従来の冷房・除湿（ドライ）運転より多少強めの運
転を行ってもよく、潜熱変化優先の運転では従来の冷房
・除湿運転より多少弱めの運転を行ってもよい。When the room temperature is equal to or higher than a value obtained by adding a predetermined value to the set temperature of the remote controller 11 (correction set temperature), the solenoid valve 10 is opened to perform a sensible heat change priority operation, and the room temperature is lower than the corrected set temperature. Sometimes, the solenoid valve 10 is closed and the refrigerant circulates only to the first pass side 3a of the indoor heat exchanger 3,
The capacity of the indoor heat exchanger 3 is reduced, that is, the low-pressure side is lowered to perform the operation of giving priority to the latent heat change. In the operation with priority on sensible heat change, the operation may be slightly stronger than the conventional cooling / dehumidification (dry) operation. In the operation with priority on latent heat change, the operation may be slightly weaker than the conventional cooling / dehumidification operation. Good.
【００１６】なお、電磁弁１０は、例えば図３に示すよ
うに、ラムダ形の室内熱交換器３の一方のパス（同図に
示す波線の斜線白丸）３ｂの冷媒入力側（冷房・除湿度
運転時の冷媒入力側）に配置されているが、室内熱交換
器３の形状や除湿効果を考慮して、その電磁弁１０を配
置するとよい。また、この空気調和機は当該制御手段の
室内機制御部１２および室外機制御部１３を有し、室内
機制御部１１および室外機制御部１２は当該運転に必要
な信号（例えばリモコンの設定温度と室温との温度差等
に応じた圧縮機１の運転周波数、運転停止や冷媒吐出温
度等）の授受を行う機能を有し、従来と同様に、室温が
設定温度になるように室温コントロール（室温制御）を
行う。As shown in FIG. 3, for example, the solenoid valve 10 is connected to a refrigerant input side (cooling / dehumidification) of one path (a hatched white circle with a wavy line) 3b of the lambda-type indoor heat exchanger 3. Although it is arranged on the refrigerant input side during operation), the electromagnetic valve 10 may be arranged in consideration of the shape of the indoor heat exchanger 3 and the dehumidifying effect. Further, the air conditioner has an indoor unit control unit 12 and an outdoor unit control unit 13 of the control unit, and the indoor unit control unit 11 and the outdoor unit control unit 12 transmit signals (for example, a set temperature of a remote control) required for the operation. The compressor 1 has a function of transmitting and receiving the operating frequency, operation stop, refrigerant discharge temperature, and the like of the compressor 1 according to the temperature difference between the air conditioner and the room temperature. (Room temperature control).
【００１７】室内機制御部１２は、室温センサ部１４か
らの検出信号により室温を検出する室温検出部１２ａ
と、リモコン１１からのリモコン信号により設定温度を
検出、記憶する設定温度検出・記憶部１２ｂと、この設
定温度に所定値を加算する設定温度補正部１２ｃと、前
記検出室温および補正設定温度により電磁弁１０の開閉
を決定する演算部１２ｄと、この開閉決定にしたがって
電磁弁１０を駆動する電磁弁駆動部１２ｅとを備えてい
る。An indoor unit controller 12a detects a room temperature based on a detection signal from a room temperature sensor 14.
A set temperature detecting and storing unit 12b for detecting and storing a set temperature based on a remote control signal from a remote control 11, a set temperature correcting unit 12c for adding a predetermined value to the set temperature, and an electromagnetic sensor based on the detected room temperature and the corrected set temperature. An operation unit 12d that determines opening and closing of the valve 10 and an electromagnetic valve driving unit 12e that drives the electromagnetic valve 10 according to the opening and closing determination are provided.
【００１８】次に、前記構成の空気調和機の制御装置の
動作を図４のフローチャート図および図５のグラフ図を
参照して説明する。なお、図４は冷房・除湿（ドライ）
運転の場合を説明したものである。Next, the operation of the control device for an air conditioner having the above-described configuration will be described with reference to the flowchart of FIG. 4 and the graph of FIG. Fig. 4 shows cooling and dehumidification (dry).
This is for the case of driving.
【００１９】まず、リモコン１１によって冷房・除湿
（ドライ）運転操作が行われると、室内機制御部１２は
電磁弁１０を開き、冷房・除湿運転を開始するととも
に、リモコン１１で設定され設定温度Ｔｓ（例えば２４
℃）を読み出し（ステップＳＴ１）、この設定温度Ｔｓ
に所定値（例えば１℃）ａを加算して補正設定温度ｔｓ
（２５℃）を算出する一方（ステップＳＴ２）、室温Ｔ
ｒ（例えば２６℃）を検出する（ステップＳＴ３）。First, when a cooling / dehumidification (dry) operation is performed by the remote controller 11, the indoor unit controller 12 opens the solenoid valve 10 to start the cooling / dehumidification operation, and sets the set temperature Ts set by the remote controller 11. (For example, 24
° C) (step ST1), and the set temperature Ts
And a predetermined value (for example, 1 ° C.) a to the correction set temperature ts
(25 ° C.) (step ST2), while room temperature T
r (for example, 26 ° C.) is detected (step ST3).
【００２０】そして、室温Ｔｒが補正設定温度ｔｓより
低いか否かを判断し（ステップＳＴ４）、室温Ｔｒが補
正設定温度ｔｓ以上であるときには、電磁弁１０を開い
た状態のままとし、つまり室内熱交換器３の容量を可変
せず、顕熱変化優先の運転を実行する（ステップＳＴ
５）。すなわち、できるだけ速やかに室温を設定温度に
近づけるような室温制御を行う。Then, it is determined whether or not the room temperature Tr is lower than the correction set temperature ts (step ST4). When the room temperature Tr is higher than the correction set temperature ts, the solenoid valve 10 is kept open, that is, the room The sensible heat change priority operation is performed without changing the capacity of the heat exchanger 3 (step ST).
5). That is, room temperature control is performed so that the room temperature approaches the set temperature as quickly as possible.
【００２１】前記顕熱変化優先の運転により、室温Ｔｒ
が急速に低下し、しかもその室温Ｔｒは短時間で補正設
定温度ｔｓに達することになる。したがって、その間、
室内の相対湿度は上昇するが、短時間であり、後述する
潜熱変化優先の運転が直ちに行われることから、その相
対湿度の上昇が小さく抑えられる（図５の波線曲線参
照）。すなわち、相対湿度は冷房・除湿（ドライ）運転
開始直後でなく、多少時間が経過して上昇し、また補正
設定温度ｔｓが設定温度Ｔｓより高い値になっているか
らである。[0021] By the operation of giving priority to the sensible heat change, the room temperature Tr
Rapidly decreases, and the room temperature Tr reaches the correction set temperature ts in a short time. Therefore, meanwhile,
The relative humidity in the room increases, but the operation is performed in a short period of time and priority is given to the latent heat change priority described later. Therefore, the increase in the relative humidity is suppressed to a small value (see the dashed curve in FIG. 5). That is, the relative humidity is not immediately after the start of the cooling / dehumidification (dry) operation, but rises after a certain time, and the correction set temperature ts is higher than the set temperature Ts.
【００２２】室温Ｔｒが補正設定温度ｔｓに達すると、
ステップＳＴ４からＳＴ６に進み、電磁弁１０を閉じ、
室内熱交換器３の１パスのみを使用して室内熱交換器３
の容量を減らし、これにより低圧側の温度を下げること
ができ、結果除湿率が上がり、相対湿度を急速に下げる
ことができる（図５の波線矢印ｘ参照）。また、室内熱
交換器３のパス側３ａでは熱交換が行われず、この熱交
換されない空気も吹き出されることから、室温Ｔｒの低
下も小さくなり（図５の波線曲線参照）、これによって
も相対湿度を下げることができる。When the room temperature Tr reaches the correction set temperature ts,
Proceeding from step ST4 to ST6, the electromagnetic valve 10 is closed,
Using only one pass of the indoor heat exchanger 3, the indoor heat exchanger 3
, The temperature on the low-pressure side can be reduced, and as a result, the dehumidification rate can be increased, and the relative humidity can be rapidly reduced (see the dashed arrow x in FIG. 5). Further, no heat exchange is performed on the path side 3a of the indoor heat exchanger 3, and the air that is not exchanged heat is also blown out, so that the decrease in the room temperature Tr is reduced (see the dashed curve in FIG. 5). Humidity can be reduced.
【００２３】このように、顕熱変化優先から潜熱変化優
先の運転へ切り替えることにより、室内の相対湿度が急
速に下がり、また室温Ｔｒの低下が小さくなるため、体
感的な肌寒さ等の不快感を軽減することができ、快適性
が損なわれることもない。As described above, by switching from the sensible heat change priority operation to the latent heat change priority operation, the relative humidity in the room is rapidly reduced, and the decrease in the room temperature Tr is reduced. Can be reduced, and comfort is not impaired.
【００２４】続いて、室温Ｔｒが補正設定温度ｔｓ＋所
定値（例えば２℃）ａ以上であるか否かを判断する（ス
テップＳＴ７）。すなわち、外乱等により室温Ｔｒが補
正設定温度ｔｓを越えることもあり、これにより快適性
が損なわれるからである。室温Ｔｒが補正設定温度ｔｓ
＋所定値ｂ以上でなければ、ステップＳＴ４に戻り、前
記ステップを繰り返し、つまり電磁弁１０を閉じた状態
のままとし、潜熱変化優先の運転を継続する。Subsequently, it is determined whether or not the room temperature Tr is equal to or higher than the correction set temperature ts + a predetermined value (for example, 2 ° C.) a (step ST7). That is, the room temperature Tr may exceed the correction set temperature ts due to a disturbance or the like, thereby deteriorating comfort. Room temperature Tr is the correction set temperature ts
If it is not equal to or more than the predetermined value b, the process returns to step ST4 and repeats the above-mentioned steps, that is, keeps the solenoid valve 10 closed, and continues the operation giving priority to the latent heat change.
【００２５】そして、室温Ｔｒが設定温度Ｔｓに達する
と、室温制御により、従来同様に圧縮機１の運転周波数
を低周波数とするが、室内熱交換器３の容量が既に減ら
されていることから、潜熱変化がそれほど小さくなら
ず、つまり除湿率がそれほど減少せず、したがって相対
湿度が上昇せず、不快感もなく、快適性が損なわれるこ
ともない。When the room temperature Tr reaches the set temperature Ts, the operating frequency of the compressor 1 is reduced to the low frequency by the room temperature control as in the conventional case, but the capacity of the indoor heat exchanger 3 has already been reduced. In addition, the change in latent heat is not so small, that is, the dehumidification rate is not so reduced, so that the relative humidity does not increase, there is no discomfort, and the comfort is not impaired.
【００２６】ところで、外乱等により室温Ｔｒが補正設
定温度ｔｓ＋所定値ｂ以上になったときには、電磁弁１
０を開いて室内熱交換器３の２パスを使用して容量をも
とに戻す（ステップＳＴ）。すなわち、室温Ｔｒの上昇
により不快感を与え、快適性が損なわれるからであり、
また電磁弁１０を閉じた状態のままでは室温Ｔｒがさら
に上昇する可能性もあるからである。そして、再度ステ
ップＳＴ１に戻り、前述したステップを繰り返す。つま
り、前述したごとく、顕熱変化優先の運転を行って室温
Ｔｒを下げ、室温Ｔｒが低下したら潜熱変化優先の運転
に切り替える。When the room temperature Tr becomes equal to or higher than the correction set temperature ts + the predetermined value b due to disturbance or the like, the electromagnetic valve 1
0 is opened and the capacity is returned to the original capacity using the two paths of the indoor heat exchanger 3 (step ST). That is, an increase in the room temperature Tr gives discomfort and impairs comfort.
Further, if the electromagnetic valve 10 is kept closed, the room temperature Tr may further increase. Then, the process returns to step ST1 again, and repeats the above-described steps. That is, as described above, the sensible heat change priority operation is performed to lower the room temperature Tr, and when the room temperature Tr decreases, the operation is switched to the latent heat change priority operation.
【００２７】なお、前記所定値ａ，ｂは室温Ｔｒおよび
設定温度Ｔｓに応じて変えるようにしてもよい。この場
合、例えば室温Ｔｒと設定温度Ｔｓとの差が大きいほ
ど、その所定値ａ，ｂを大きい値にする。前記電磁弁１
０の代わりに、膨張弁を用いてもよい。この場合、膨張
弁を開閉制御する。また、電磁弁１０は同図の波線白丸
のパス側３ａの冷媒入力側に配置してもよい。前記室内
熱交換器３が２つより多いパス構造である場合、２つ以
上のパスの冷媒入力側にそれぞれ弁を配置し、各弁を制
御するようにしてもよい。この場合、各弁を同時に開閉
制御し、あるいは各弁を任意に開閉制御する。The predetermined values a and b may be changed according to the room temperature Tr and the set temperature Ts. In this case, for example, the larger the difference between the room temperature Tr and the set temperature Ts, the larger the predetermined values a and b. The solenoid valve 1
Instead of zero, an expansion valve may be used. In this case, the expansion valve is controlled to open and close. Further, the solenoid valve 10 may be arranged on the refrigerant input side of the path side 3a indicated by a wavy white circle in FIG. When the indoor heat exchanger 3 has a structure of more than two paths, valves may be arranged on the refrigerant input side of two or more paths, and each valve may be controlled. In this case, each valve is controlled to open and close simultaneously, or each valve is controlled to open and close arbitrarily.
【００２８】[0028]
【発明の効果】以上説明したように、この空気調和機の
請求項１の発明によると、室内熱交換器の複数パスのう
ち少なくとも１パスの冷媒入力側に弁を設け、空気調和
機の冷房・除湿（ドライ）運転時に、少なくとも室温お
よび設定温度に応じて前記弁を制御し、前記室内熱交換
器の容量を可変するようにしたので、室温が設定温度に
達する前に室内熱交換器の容量を減らして潜熱変化優先
の運転を行うことができるため、除湿率を上げることが
でき、室温の相対湿度の上昇を抑えることができ、結果
体感的な肌寒さ等を軽減することができ、快適性の向上
が図れるという効果がある。As described above, according to the first aspect of the present invention, the air conditioner is provided with a valve on at least one of the refrigerant input sides of the plurality of paths of the indoor heat exchanger to cool the air conditioner. -During the dehumidification (dry) operation, the valve is controlled at least according to the room temperature and the set temperature, so that the capacity of the indoor heat exchanger is varied. Since the operation with priority to latent heat change can be performed by reducing the capacity, the dehumidification rate can be increased, the rise in the relative humidity at room temperature can be suppressed, and as a result, sensible chills etc. can be reduced, There is an effect that comfort can be improved.
【００２９】請求項２の発明によると、室内熱交換器前
記複数パスのうち少なくとも１パスの冷媒入力側に弁を
設け、空気調和機の冷房・除湿（ドライ）運転時に、室
温が設定温度に所定値を加算した値（補正設定温度）以
上であるときには前記弁を開いた状態とし、室温が前記
補正設定温度より低いときには前記弁を閉じて前記室内
熱交換器の容量を減らすようにしたので、例えば室内熱
交換器の温度が結露に達していなくとも、室温が設定温
度に達する前に室内熱交換器の容量を減らして潜熱変化
優先の運転を行うことで、除湿率を上げることができ、
室温の相対湿度の上昇を抑えることができ、また室温が
設定温度に達している場合でも除湿率がそれほど低くな
らず、相対湿度の上昇を抑えることができ、結果体感的
な肌寒さ等を軽減することができ、快適性の向上が図れ
るという効果がある。According to the second aspect of the present invention, a valve is provided on the refrigerant input side of at least one of the plurality of paths of the indoor heat exchanger so that the room temperature can reach the set temperature during the cooling / dehumidifying (dry) operation of the air conditioner. When the temperature is equal to or higher than the value obtained by adding the predetermined value (correction set temperature), the valve is opened, and when the room temperature is lower than the correction set temperature, the valve is closed to reduce the capacity of the indoor heat exchanger. Even if the temperature of the indoor heat exchanger does not reach the dew condensation, for example, the dehumidification rate can be increased by reducing the capacity of the indoor heat exchanger and performing the latent heat change priority operation before the room temperature reaches the set temperature. ,
The rise in relative humidity at room temperature can be suppressed, and even when the room temperature has reached the set temperature, the dehumidification rate does not decrease so much and the rise in relative humidity can be suppressed, resulting in reduced perceived chills etc. Has the effect of improving comfort.
【００３０】請求項３の発明によると、室内熱交換器の
２パスのうちの一方のパスの冷媒入力側に弁を設け、空
気調和機の冷房・除湿（ドライ）運転時に、室温が前記
設定温度に所定値を加算した値（補正設定温度）以上で
あるときには前記弁を開いた状態として顕熱変化優先の
運転を行い、室温が前記補正設定温度より低いときには
前記弁を閉じて前記室内熱交換器の容量を減らし、潜熱
変化優先の運転を行うようにしたので、例えば室内熱交
換器の温度が結露に達していなくとも、室温が設定温度
に達する前に顕熱変化優先の運転から潜熱変化優先の運
転へ切り替えることができ、しかも室内熱交換器の容量
を半分に減らすことができるため、除湿率をより上げる
ことができ、室温の相対湿度の上昇を抑えることがで
き、また室温が設定温度に達している場合でも除湿率が
それほど低くならず、相対湿度の上昇を抑えることがで
き、結果体感的な肌寒さ等を軽減することができ、快適
性の向上が図れるという効果があり、また弁を１つだけ
付加すればよく、コスト的にも安価に済ませられるとい
う効果がある。According to the third aspect of the present invention, a valve is provided on the refrigerant input side of one of the two paths of the indoor heat exchanger, and the room temperature is set when the air conditioner performs a cooling / dehumidifying (dry) operation. When the temperature is equal to or higher than a value obtained by adding a predetermined value to the temperature (correction set temperature), the valve is opened to perform a sensible heat change priority operation, and when the room temperature is lower than the correction set temperature, the valve is closed to close the indoor heat. Since the capacity of the exchanger is reduced and the operation with priority on latent heat change is performed, for example, even if the temperature of the indoor heat exchanger does not reach the dew condensation, the latent heat change operation is performed before the room temperature reaches the set temperature. Since the operation can be switched to the change-priority operation and the capacity of the indoor heat exchanger can be reduced by half, the dehumidification rate can be further increased, the rise in the relative humidity at room temperature can be suppressed, and the room temperature can be reduced. Setting Even if the temperature has reached, the dehumidification rate does not become so low, the rise in relative humidity can be suppressed, and as a result, sensible chills etc. can be reduced, and there is the effect that comfort can be improved, Further, only one valve needs to be added, and there is an effect that the cost can be reduced.
【００３１】請求項４の発明によると、請求項２または
３において前記弁を閉じた後、前記室温が前記補正設定
温度に所定値を加算した値以上であるときには前記弁を
開くようにしたので、請求項２または３の効果に加え、
外乱等により室温が上昇した場合でも室温を直ちに下げ
ることができ、不快感を抑えることができる。請求項５
の発明によると、請求項１，２，３または４における弁
は電磁弁あるいは膨張弁であり、この電磁弁あるいは膨
張弁を当該空気調和機の制御手段で制御するようにした
ので、請求項２，３または４の効果に加え、電磁弁ある
いは膨張弁だけを配置すればよく、それほどコストアッ
プにならずに済むという効果がある。According to the fourth aspect of the present invention, after the valve is closed, the valve is opened when the room temperature is equal to or higher than a value obtained by adding a predetermined value to the correction set temperature. , In addition to the effect of claim 2 or 3,
Even when the room temperature rises due to disturbance or the like, the room temperature can be immediately lowered, and discomfort can be suppressed. Claim 5
According to the invention, the valve in claims 1, 2, 3 or 4 is an electromagnetic valve or an expansion valve, and the electromagnetic valve or the expansion valve is controlled by the control means of the air conditioner. , 3 or 4, and only the solenoid valve or the expansion valve may be provided, so that the cost does not increase so much.
【図１】この発明の一実施の形態を説明する空気調和機
の制御装置の概略的ブロック線図。FIG. 1 is a schematic block diagram of a control device for an air conditioner illustrating an embodiment of the present invention.
【図２】この発明の空気調和機の冷凍サイクルを説明す
る概略的構成図。FIG. 2 is a schematic configuration diagram illustrating a refrigeration cycle of the air conditioner of the present invention.
【図３】この発明の空気調和機の室内機を説明する概略
的側断面図。FIG. 3 is a schematic side sectional view illustrating an indoor unit of the air conditioner of the present invention.
【図４】図１に示す制御装置の動作を説明する概略的フ
ローチャート。FIG. 4 is a schematic flowchart illustrating the operation of the control device shown in FIG. 1;
【図５】図１に示す制御装置の動作を説明する概略的グ
ラフ図。FIG. 5 is a schematic graph illustrating the operation of the control device shown in FIG. 1;
【図６】従来の空気調和機の冷凍サイクルを説明する概
略的構成図。FIG. 6 is a schematic configuration diagram illustrating a refrigeration cycle of a conventional air conditioner.
【図７】従来の空気調和機の制御装置の動作を説明する
概略的グラフ図。FIG. 7 is a schematic graph illustrating the operation of a control device for a conventional air conditioner.
１ 圧縮機 ３ 室内熱交換器 １０ 電磁弁（弁） １１ リモコン １２ａ 室温検出部 １２ｂ 設定温度検出部 １２ｃ 設定温度補正部 １２ｄ 演算部 １２ｅ 電磁弁駆動部 １３ 室外機制御部 １４ 室温センサ部 ａ，ｂ 所定値 Ｔｒ 室温 Ｔｓ 設定温度 ｔｓ 補正設定温度 DESCRIPTION OF SYMBOLS 1 Compressor 3 Indoor heat exchanger 10 Solenoid valve (valve) 11 Remote control 12a Room temperature detection part 12b Set temperature detection part 12c Set temperature correction part 12d Calculation part 12e Solenoid valve drive part 13 Outdoor unit control part 14 Room temperature sensor parts a, b Predetermined value Tr Room temperature Ts Set temperature ts Correction set temperature
Claims (5)
複数パス構造とし、該室内熱交換器に冷媒を循環して室
温制御を行い、室温を設定温度にコントロールする空気
調和機において、 前記複数パスのうち、少なくとも１パスの冷媒入力側に
弁を設け、前記空気調和機の冷房・除湿（ドライ）運転
時に、少なくとも前記室温および設定温度に応じて前記
弁を制御し、前記室内熱交換器の容量を可変するように
したことを特徴とする空気調和機。1. An air conditioner in which an indoor heat exchanger constituting a refrigeration cycle has a multi-pass structure, circulates a refrigerant through the indoor heat exchanger to control room temperature, and controls room temperature to a set temperature. A valve is provided on at least one of the refrigerant input sides of the paths, and the valve is controlled according to at least the room temperature and a set temperature during a cooling / dehumidification (dry) operation of the air conditioner; An air conditioner characterized by having a variable capacity.
複数パス構造とし、該室内熱交換器に冷媒を循環して室
温制御を行い、室温を設定温度にコントロールする空気
調和機において、 前記複数パスのうち、少なくとも１パスの冷媒入力側に
弁を設け、前記空気調和機の冷房・除湿（ドライ）運転
時に、前記室温が前記設定温度に所定値を加算した値
（補正設定温度）以上であるときには前記弁を開いた状
態とし、前記室温が前記補正設定温度より低いときには
前記弁を閉じて前記室内熱交換器の容量を減らすように
したことを特徴とする空気調和機。2. An air conditioner having a plurality of indoor heat exchangers constituting a refrigeration cycle, circulating a refrigerant through the indoor heat exchanger to control room temperature, and controlling room temperature to a set temperature. A valve is provided in at least one of the passes on the refrigerant input side, and when the air conditioner performs a cooling / dehumidifying (dry) operation, the room temperature is equal to or higher than a value obtained by adding a predetermined value to the set temperature (corrected set temperature). The air conditioner is characterized in that the valve is opened at one time, and the valve is closed when the room temperature is lower than the correction set temperature to reduce the capacity of the indoor heat exchanger.
２パス構造とし、該室内熱交換器に冷媒を循環して室温
制御を行い、室温を設定温度にコントロールする空気調
和機において、 前記２パスのうちの一方のパスの冷媒入力側に弁を設
け、前記空気調和機の冷房・除湿（ドライ）運転時に、
前記室温が前記設定温度に所定値を加算した値（補正設
定温度）以上であるときには前記弁を開いた状態とし、
前記室温が前記補正設定温度より低いときには前記弁を
閉じて前記室内熱交換器の容量を減らし、潜熱変化優先
の運転に切り替えるようにしたことを特徴とする空気調
和機。3. An air conditioner in which an indoor heat exchanger constituting a refrigeration cycle has a two-pass structure, circulates refrigerant through the indoor heat exchanger to control room temperature, and controls room temperature to a set temperature. A valve is provided on the refrigerant input side of one of the paths, and during the cooling / dehumidifying (dry) operation of the air conditioner,
When the room temperature is equal to or higher than a value obtained by adding a predetermined value to the set temperature (corrected set temperature), the valve is opened,
The air conditioner according to claim 1, wherein when the room temperature is lower than the correction set temperature, the valve is closed to reduce the capacity of the indoor heat exchanger, and the operation is switched to a latent heat change priority operation.
設定温度に所定値を加算した値以上であるときには前記
弁を開くようにした請求項２または３記載の空気調和
機。4. The air conditioner according to claim 2, wherein after closing the valve, the valve is opened when the room temperature is equal to or higher than a value obtained by adding a predetermined value to the correction set temperature.
該電磁弁あるいは膨張弁を当該空気調和機の制御手段で
制御するようにした請求項１，２，３または４記載の空
気調和機。5. The valve is an electromagnetic valve or an expansion valve,
5. The air conditioner according to claim 1, wherein said solenoid valve or expansion valve is controlled by control means of said air conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09021597A JP3522076B2 (en) | 1997-03-25 | 1997-03-25 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09021597A JP3522076B2 (en) | 1997-03-25 | 1997-03-25 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10267356A true JPH10267356A (en) | 1998-10-09 |
| JP3522076B2 JP3522076B2 (en) | 2004-04-26 |
Family
ID=13992274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09021597A Expired - Fee Related JP3522076B2 (en) | 1997-03-25 | 1997-03-25 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3522076B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017115719A1 (en) * | 2015-12-28 | 2017-07-06 | ダイキン工業株式会社 | Outlet-switching valve and air conditioner using same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500741A (en) * | 2019-09-29 | 2019-11-26 | 芜湖美智空调设备有限公司 | Control method, system and the air-conditioning of air-conditioning |
-
1997
- 1997-03-25 JP JP09021597A patent/JP3522076B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017115719A1 (en) * | 2015-12-28 | 2017-07-06 | ダイキン工業株式会社 | Outlet-switching valve and air conditioner using same |
| JP2017120108A (en) * | 2015-12-28 | 2017-07-06 | ダイキン工業株式会社 | Outlet switching valve and air conditioner using the same |
Also Published As
| Publication number | Publication date |
|---|---|
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