JPH0735389A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPH0735389A JPH0735389A JP5182651A JP18265193A JPH0735389A JP H0735389 A JPH0735389 A JP H0735389A JP 5182651 A JP5182651 A JP 5182651A JP 18265193 A JP18265193 A JP 18265193A JP H0735389 A JPH0735389 A JP H0735389A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- indoor
- humidity
- heat exchanger
- dry
- 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
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、除湿機能を備えた空
気調和機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner having a dehumidifying function.
【０００２】[0002]
【従来の技術】複数の室内熱交換器を電子膨張弁を介し
て接続し、電子膨張弁の開度を制御することによって冷
房運転、ドライ運転、暖房運転を選択的に実行できるよ
うにした空気調和機がある。2. Description of the Related Art Air in which a plurality of indoor heat exchangers are connected via an electronic expansion valve and the opening degree of the electronic expansion valve is controlled to selectively perform cooling operation, dry operation, and heating operation. There is a harmony machine.
【０００３】すなわち、冷房運転では電子膨張弁を全開
して両室内熱交換器を共に蒸発器として機能させる。暖
房運転では電子膨張弁を全開して両室内熱交換器を共に
凝縮器として機能させる。That is, in the cooling operation, the electronic expansion valve is fully opened so that both indoor heat exchangers function as an evaporator. In heating operation, the electronic expansion valve is fully opened and both indoor heat exchangers function as a condenser.
【０００４】ドライ運転では電子膨張弁の開度を絞り、
これにより一方の室内熱交換器を凝縮器（再熱器）、他
方の室内熱交換器を蒸発器として機能させ、他方の室内
熱交換器で冷却および除湿した空気を一方の室内熱交換
器で再熱し、除湿空気として室内に吹出す。In dry operation, the opening of the electronic expansion valve is reduced
As a result, one indoor heat exchanger functions as a condenser (reheater), the other indoor heat exchanger functions as an evaporator, and the air cooled and dehumidified by the other indoor heat exchanger is used by one indoor heat exchanger. It is reheated and blown into the room as dehumidified air.
【０００５】このドライ運転時、室外ファンの運転およ
び冷媒加熱器の運転を制御することにより、吹出空気温
度を調節することができる。すなわち、吹出空気温度の
異なる冷房ドライモード、冷気味ドライモード、等温ド
ライモード、暖気味ドライモードがあり、従来、これら
モードの１つを室内温度と設定温度との差に応じて選択
するようにしている。また、室内湿度と設定湿度との差
に応じて除湿能力を制御するようにしている。During this dry operation, the temperature of the blown air can be adjusted by controlling the operation of the outdoor fan and the operation of the refrigerant heater. That is, there are a cooling dry mode, a cold dry mode, an isothermal dry mode, and a warm dry mode with different blown air temperatures. Conventionally, one of these modes should be selected according to the difference between the indoor temperature and the set temperature. ing. Further, the dehumidifying ability is controlled according to the difference between the indoor humidity and the set humidity.
【０００６】[0006]
【発明が解決しようとする課題】室内温度と設定温度と
の差に応じたモード選択、および室内湿度と設定湿度と
の差に応じた能力制御だけでは、室内の温・湿度が目標
値である設定温度および設定湿度にうまく収束せず、快
適な室内環境を得るのがなかなか難しいのが実情であ
る。The indoor temperature / humidity is the target value only by the mode selection according to the difference between the room temperature and the set temperature and the capacity control according to the difference between the room humidity and the set humidity. In reality, it is difficult to obtain a comfortable indoor environment because the temperature and humidity do not converge well.
【０００７】なお、室内温度が低くなると暖気味ドライ
モードが選択されるが、本来の暖房とは違うため、気温
の低下が大きい場合は住人が肌寒さを感じ、しかもそれ
がいつまでも継続してしまう。When the indoor temperature becomes low, the warm dry mode is selected. However, since it is different from the original heating, the resident feels chilly when the temperature drops greatly, and it continues forever. .
【０００８】この発明は上記の事情を考慮したもので、
第１の発明の空気調和機は、室内の温・湿度を目標値に
迅速に収束させることができ、快適な室内環境が確実に
得られることを目的とする。第２の発明の空気調和機
は、除湿中に気温が大きく低下した場合でも住人に肌寒
さを感じさせないことを目的とする。The present invention takes the above circumstances into consideration,
An air conditioner according to a first aspect of the present invention is capable of promptly converging indoor temperature and humidity to a target value and reliably obtaining a comfortable indoor environment. An air conditioner according to a second aspect of the present invention is intended to prevent residents from feeling chills even when the temperature greatly decreases during dehumidification.
【０００９】[0009]
【課題を解決するための手段】第１の発明の空気調和機
は、圧縮機、室外熱交換器、冷媒加熱器、減圧器、第１
室内熱交換器、電子膨張弁、第２室内熱交換器を接続し
た冷凍サイクルと、室内温度Ｔａを検知する室内温度セ
ンサと、室内湿度Ｈａを検知する室内湿度センサと、室
内温度Ｔｓおよび室内湿度Ｈｓを設定するための操作手
段と、圧縮機の吐出冷媒を室外熱交換器、減圧器、第１
室内熱交換器、電子膨張弁、第２室内熱交換器に通して
圧縮機に戻しかつ電子膨張弁を全開して冷房運転を実行
する手段と、圧縮機の吐出冷媒を室外熱交換器、冷媒加
熱器、第１室内熱交換器、電子膨張弁、第２室内熱交換
器に通して圧縮機に戻しかつ電子膨張弁を絞ってドライ
運転を実行する手段と、ドライ運転時、吹出空気温度の
異なる冷房ドライモード、冷気味ドライモード、等温ド
ライモード、暖気味ドライモードのいずれかのモードを
室内温度センサの検知温度Ｔａと設定温度Ｔｓとの差に
応じて選択する手段と、ドライ運転時、室内湿度センサ
の検知湿度Ｈａが設定湿度Ｈｓを基準とする低湿度領
域、適湿度領域、高湿度領域のどこに存するかに応じて
除湿能力を制御する手段と、ドライ運転時、室内湿度セ
ンサの検知湿度Ｈａが低湿度領域に存したまま所定時間
にわたり変化しないとき除湿能力を低減し、高湿度領域
に存したまま所定時間にわたり変化しないときが除湿能
力を増大する手段と、選択したモードに変化がないまま
所定時間が経過すると、設定温度Ｔｓを補正する手段と
を備える。An air conditioner of a first invention is a compressor, an outdoor heat exchanger, a refrigerant heater, a pressure reducer, and a first air conditioner.
A refrigeration cycle in which an indoor heat exchanger, an electronic expansion valve, and a second indoor heat exchanger are connected, an indoor temperature sensor that detects an indoor temperature Ta, an indoor humidity sensor that detects an indoor humidity Ha, an indoor temperature Ts, and an indoor humidity. The operating means for setting Hs, the refrigerant discharged from the compressor, the outdoor heat exchanger, the pressure reducer, the first
Means for returning to the compressor through the indoor heat exchanger, the electronic expansion valve, and the second indoor heat exchanger and fully opening the electronic expansion valve to perform the cooling operation, and the refrigerant discharged from the compressor as the outdoor heat exchanger, the refrigerant. A means for executing a dry operation by returning to the compressor through the heater, the first indoor heat exchanger, the electronic expansion valve, and the second indoor heat exchanger and squeezing the electronic expansion valve, and a means for controlling the blown air temperature during the dry operation. Means for selecting one of different cooling dry mode, cold dry mode, isothermal dry mode, and warm dry mode according to the difference between the detected temperature Ta of the indoor temperature sensor and the set temperature Ts, and during dry operation, A means for controlling the dehumidifying capacity according to where the detected humidity Ha of the indoor humidity sensor is in a low humidity area, an appropriate humidity area, or a high humidity area based on the set humidity Hs, and detection of the indoor humidity sensor during dry operation Humidity Ha A means for reducing the dehumidifying capacity when it remains in the low humidity area for a predetermined time and increasing the dehumidifying capacity when it stays in the high humidity area for a predetermined time, and a predetermined mode with no change in the selected mode. And a means for correcting the set temperature Ts as time passes.
【００１０】第２の発明の空気調和機は、第１の発明の
空気調和機の構成に加え、圧縮機の吐出冷媒を第２室内
熱交換器、電子膨張弁、第１室内熱交換器、減圧器、室
外熱交換器に通して圧縮機に戻しかつ冷媒加熱器を運転
オンして電子膨張弁を全開し暖房運転を実行する手段
と、外気温度Ｔｏを検知する外気温度センサと、ドライ
運転時、室内温度センサの検知温度Ｔａが設定温度Ｔｓ
より低くその差が設定値Ｔ2 以上のとき、かつ外気温度
センサの検知温度Ｔｏが設定温度Ｔｓより低くその差が
所定値以上のとき、ドライ運転を中断して暖房運転を実
行する手段と、この暖房運転の実行に際し、室内温度セ
ンサの検知温度Ｔａと設定温度Ｔｓとの差が設定値Ｔ1
（＜Ｔ2 ）内に収まると、その暖房運転を終了してドラ
イ運転に復帰する手段とを備えている。In addition to the structure of the air conditioner of the first invention, the air conditioner of the second invention uses the refrigerant discharged from the compressor as a second indoor heat exchanger, an electronic expansion valve, a first indoor heat exchanger, A means for returning to the compressor through the decompressor and the outdoor heat exchanger, turning on the refrigerant heater to fully open the electronic expansion valve to perform the heating operation, an outside air temperature sensor for detecting the outside air temperature To, and a dry operation At this time, the detected temperature Ta of the indoor temperature sensor is the set temperature Ts.
When the difference is lower than the set value T 2 and the detected temperature To of the outside air temperature sensor is lower than the set temperature Ts and the difference is equal to or more than a predetermined value, means for interrupting the dry operation and executing the heating operation, When performing this heating operation, the difference between the detected temperature Ta of the indoor temperature sensor and the set temperature Ts is the set value T 1
When the temperature is within (<T 2 ), the heating operation is terminated and the dry operation is resumed.
【００１１】[0011]
【作用】第１の発明の空気調和機では、ドライ運転時、
吹出空気温度の異なる冷房ドライモード、冷気味ドライ
モード、等温ドライモード、暖気味ドライモードのいず
れかのモードを室内温度センサの検知温度Ｔａと設定温
度Ｔｓとの差に応じて選択する。さらに、室内湿度セン
サの検知湿度Ｈａが設定湿度Ｈｓを基準とする低湿度領
域、適湿度領域、高湿度領域のどこに存するかに応じて
除湿能力を制御する。ただし、室内湿度センサの検知湿
度Ｈａが低湿度領域に存したまま所定時間にわたり変化
しないとき除湿能力を低減し、高湿度領域に存したまま
所定時間にわたり変化しないとき除湿能力を増大する。
また、選択したモードに変化がないまま所定時間が経過
すると、設定温度Ｔｓを補正する。In the air conditioner of the first aspect of the invention, during dry operation,
Any of a cooling dry mode, a cold dry mode, an isothermal dry mode, and a warm dry mode with different blown air temperatures is selected according to the difference between the detected temperature Ta of the indoor temperature sensor and the set temperature Ts. Further, the dehumidifying ability is controlled depending on where the detected humidity Ha of the indoor humidity sensor is in a low humidity region, an appropriate humidity region, or a high humidity region with reference to the set humidity Hs. However, the dehumidifying ability is reduced when the detected humidity Ha of the indoor humidity sensor remains in the low humidity area for a predetermined time, and the dehumidifying ability is increased when it remains in the high humidity area for a predetermined time.
Further, when the predetermined time has passed without changing the selected mode, the set temperature Ts is corrected.
【００１２】第２の発明の空気調和機では、ドライ運転
時、室内温度センサの検知温度Ｔａが設定温度Ｔｓより
低くその差が設定値Ｔ2 以上のとき、かつ外気温度セン
サの検知温度Ｔｏが設定温度Ｔｓより低くその差が所定
値以上のとき、ドライ運転を中断して暖房運転を実行す
る。この暖房運転の実行に際し、室内温度センサの検知
温度Ｔａと設定温度Ｔｓとの差が設定値Ｔ1 （＜Ｔ2 ）
内に収まると、その暖房運転を終了してドライ運転に復
帰する。In the air conditioner of the second invention, during dry operation, when the detected temperature Ta of the indoor temperature sensor is lower than the set temperature Ts and the difference between them is the set value T 2 or more, and the detected temperature To of the outside air temperature sensor is When the temperature is lower than the set temperature Ts and the difference is a predetermined value or more, the dry operation is interrupted and the heating operation is executed. When performing this heating operation, the difference between the temperature Ta detected by the indoor temperature sensor and the set temperature Ts is the set value T 1 (<T 2 ).
When the temperature falls within the range, the heating operation is terminated and the dry operation is resumed.
【００１３】[0013]
【実施例】以下、この発明の一実施例について図面を参
照して説明する。図１に示すように、圧縮機１の吐出口
に四方弁２を介して室外熱交換器３を配管接続する。こ
の室外熱交換器３に逆止弁４を介して冷媒加熱器５を配
管接続する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, an outdoor heat exchanger 3 is pipe-connected to a discharge port of a compressor 1 via a four-way valve 2. A refrigerant heater 5 is connected to the outdoor heat exchanger 3 via a check valve 4 by piping.
【００１４】冷媒加熱器５に減圧器たとえば電子膨張弁
６を介して第１室内熱交換器７を配管接続する。この第
１室内熱交換器７に電子膨張弁８を介して第２室内熱交
換器９を配管接続する。電子膨張弁６，８は、駆動パル
スの数に応じて開度が連続的に変化するパルスモータバ
ルブであり、以下これをＰＭＶと略称する。A first indoor heat exchanger 7 is connected to the refrigerant heater 5 through a pressure reducer, for example, an electronic expansion valve 6 by piping. A second indoor heat exchanger 9 is connected to the first indoor heat exchanger 7 via an electronic expansion valve 8 by piping. The electronic expansion valves 6 and 8 are pulse motor valves whose opening continuously changes according to the number of drive pulses, and are hereinafter abbreviated as PMV.
【００１５】第２室内熱交換器９を四方弁２および逆止
弁１０を介して圧縮機１の吸込口に配管接続する。冷媒
加熱器５はガスバ−ナ１１、比例弁１２、および二方弁
１３を付属して備え、二方弁１３および比例弁１２を開
いてガスバ−ナ１１に燃料を導き、その燃料をガスバ−
ナ１１で燃焼させることにより冷媒を加熱する。The second indoor heat exchanger 9 is pipe-connected to the suction port of the compressor 1 via the four-way valve 2 and the check valve 10. The refrigerant heater 5 is equipped with a gas burner 11, a proportional valve 12, and a two-way valve 13 attached thereto. The two-way valve 13 and the proportional valve 12 are opened to introduce fuel to the gas burner 11, and the fuel is burned to the gas burner.
The refrigerant is heated by burning it in the nozzle 11.
【００１６】逆止弁４と冷媒加熱器５との間の管から圧
縮機１の吸込口に接続の管にかけてバイパス１４を接続
し、そのバイパス１４に二方弁１５を設ける。第２室内
熱交換器９と四方弁２との間の管から冷媒加熱器５とＰ
ＭＶ６との間の管にかけて、バイパス１６を接続する。
このバイパス１６に逆止弁１７およびキャピラリチュー
ブ１８を設ける。A bypass 14 is connected from the pipe between the check valve 4 and the refrigerant heater 5 to the pipe connected to the suction port of the compressor 1, and the bypass 14 is provided with a two-way valve 15. From the pipe between the second indoor heat exchanger 9 and the four-way valve 2, the refrigerant heater 5 and P
The bypass 16 is connected to the pipe between the MV6 and the MV6.
A check valve 17 and a capillary tube 18 are provided in this bypass 16.
【００１７】室外熱交換器３の近傍に、その室外熱交換
器３に外気を送るための室外ファン２１を設ける。室内
熱交換器７，９の近傍に、その室内熱交換器７，９に室
内空気を循環させるための室内ファン２２を設ける。An outdoor fan 21 for sending outside air to the outdoor heat exchanger 3 is provided near the outdoor heat exchanger 3. An indoor fan 22 for circulating indoor air in the indoor heat exchangers 7 and 9 is provided near the indoor heat exchangers 7 and 9.
【００１８】冷媒加熱器５を挟む両側の管に、冷媒温度
センサ３１，３２をそれぞれ取付けらる。第２室内熱交
換器９を挟む両側の管に、冷媒温度センサ３３，３４を
それぞれ取付ける。Refrigerant temperature sensors 31 and 32 are attached to the tubes on both sides of the refrigerant heater 5, respectively. Refrigerant temperature sensors 33 and 34 are attached to the tubes on both sides of the second indoor heat exchanger 9, respectively.
【００１９】なお、Ｙａは室外ユニット、Ｙｂは室内ユ
ニットである。制御回路を図２に示す。商用交流電源４
０に室内制御部５０を接続し、その室内制御部５０に電
源ライン４１およびシリアル信号ライン４２を介して室
外制御部６０を接続する。シリアル信号ライン４２は、
電源電圧に同期したデータ転送を行なうためのものであ
る。Note that Ya is an outdoor unit and Yb is an indoor unit. The control circuit is shown in FIG. Commercial AC power supply 4
The indoor control unit 50 is connected to 0, and the outdoor control unit 60 is connected to the indoor control unit 50 via the power supply line 41 and the serial signal line 42. The serial signal line 42 is
It is for performing data transfer in synchronization with the power supply voltage.
【００２０】室内制御部５０に、室内温度センサ５１、
室内湿度センサ５２、速度制御回路５３、リモコン５
４、ＰＭＶ８、冷媒温度センサ３３，３４を接続する。
リモコン５４は、各種運転条件を設定するためのリモー
トコントロール式の操作器である。速度制御回路５３
は、室内ファンモータ２２Ｍの速度を制御するもので、
たとえば通電のタップ切換を行なう。The indoor control unit 50 includes an indoor temperature sensor 51,
Indoor humidity sensor 52, speed control circuit 53, remote controller 5
4, PMV8, refrigerant temperature sensors 33, 34 are connected.
The remote controller 54 is a remote control type operation device for setting various operating conditions. Speed control circuit 53
Is for controlling the speed of the indoor fan motor 22M,
For example, energization tap switching is performed.
【００２１】室外制御部６０に、インバータ回路６１、
速度制御回路６２、四方弁２、二方弁１５、冷媒加熱器
５、冷媒温度センサ３１，３２、外気温度センサ６３を
接続する。The outdoor control unit 60 includes an inverter circuit 61,
The speed control circuit 62, the four-way valve 2, the two-way valve 15, the refrigerant heater 5, the refrigerant temperature sensors 31, 32, and the outside air temperature sensor 63 are connected.
【００２２】インバータ回路６１は、商用電源電圧を整
流し、それを室外制御部６０の指令に応じた周波数（お
よびレベル）の電圧に変換し、出力する。この出力は圧
縮機モータ１Ｍの駆動電力となる。速度制御回路６２
は、室外ファンモータ２１Ｍの速度を制御する。The inverter circuit 61 rectifies the commercial power supply voltage, converts it into a voltage of a frequency (and level) according to a command from the outdoor control unit 60, and outputs it. This output becomes drive power for the compressor motor 1M. Speed control circuit 62
Controls the speed of the outdoor fan motor 21M.
【００２３】制御部５０，６０は、それぞれマイクロコ
ンピュータおよびその周辺回路からなり、相互のデータ
転送を行ないながら空気調和機の全般にわたる制御を行
なうもので、次の機能手段を備える。The control units 50 and 60, each of which is composed of a microcomputer and its peripheral circuits, carry out overall control of the air conditioner while mutually transferring data, and are provided with the following functional means.
【００２４】［１］図１に実線矢印で示すように、圧縮
機１の吐出冷媒を四方弁２、室外熱交換器３、逆止弁
４、冷媒加熱器５、ＰＭＶ６、第１室内熱交換器７、Ｐ
ＭＶ８、第２室内熱交換器９、四方弁２、逆止弁１０に
通して圧縮機１に戻し、かつ冷媒加熱器５の運転オフお
よびＰＭＶ８の全開を設定するとともに、ＰＭＶ６を絞
り、冷房運転を実行する手段。[1] As shown by the solid line arrow in FIG. 1, the refrigerant discharged from the compressor 1 is supplied to the four-way valve 2, the outdoor heat exchanger 3, the check valve 4, the refrigerant heater 5, the PMV 6, and the first indoor heat exchange. Bowl 7, P
Return to the compressor 1 through the MV8, the second indoor heat exchanger 9, the four-way valve 2 and the check valve 10, set the operation of the refrigerant heater 5 to OFF and setting the PMV8 to fully open, and throttle the PMV6 to perform cooling operation. Means to perform.
【００２５】［２］図１に破線矢印で示すように、圧縮
機１の吐出冷媒を四方弁２、第２室内熱交換器９、ＰＭ
Ｖ８、第１室内熱交換器７、ＰＭＶ６、冷媒加熱器５、
バイパス１４（二方弁１５が開）に通して圧縮機１に戻
し、かつ冷媒加熱器５の運転オンおよびＰＭＶ８の全開
を設定するとともに、ＰＭＶ６を絞り、暖房運転を実行
する手段。[2] As shown by the broken line arrow in FIG. 1, the refrigerant discharged from the compressor 1 is supplied to the four-way valve 2, the second indoor heat exchanger 9, PM.
V8, first indoor heat exchanger 7, PMV6, refrigerant heater 5,
A means for returning to the compressor 1 through the bypass 14 (the two-way valve 15 is open), setting the operation of the refrigerant heater 5 and setting the PMV 8 to full open, and throttle the PMV 6 to execute the heating operation.
【００２６】［３］暖房時、冷媒加熱器５に入る冷媒の
温度（冷媒温度センサ３１の検知温度）と冷媒加熱器５
から流出する冷媒の温度（冷媒温度センサ３２の検知温
度）との差を冷媒の過熱度として求め、その過熱度が一
定値となるよう、冷媒加熱器５の加熱量（比例弁１２の
開度）を調節する手段。[3] Temperature of refrigerant entering the refrigerant heater 5 (detection temperature of the refrigerant temperature sensor 31) and refrigerant heater 5 during heating
The difference between the temperature of the refrigerant flowing out from the refrigerant (the temperature detected by the refrigerant temperature sensor 32) is obtained as the degree of superheat of the refrigerant, and the heating amount of the refrigerant heater 5 (the opening of the proportional valve 12 is adjusted so that the degree of superheat becomes a constant value). ) Means of adjusting.
【００２７】［４］冷房運転と同じく実線矢印の方向に
冷媒を流し、かつＰＭＶ６の全開を設定するとともに、
ＰＭＶ８を絞り、ドライ運転を実行する手段。 ［５］ドライ運転時、冷媒過熱度５の運転または室外フ
ァン２１の速度を制御して室内への吹出空気の温度を可
変する手段。[4] As in the cooling operation, the refrigerant is caused to flow in the direction of the solid line arrow and the PMV 6 is set to be fully opened.
Means for squeezing the PMV 8 and executing dry operation. [5] A means for varying the temperature of the air blown into the room by controlling the operation of the refrigerant superheat degree 5 or the speed of the outdoor fan 21 during the dry operation.
【００２８】［６］ドライ運転の開始に際し、所定時間
だけ冷房運転を実行する手段。 ［７］ドライ運転時、吹出空気温度の異なる冷房ドライ
モード、冷気味ドライモード、等温ドライモード、暖気
味ドライモードのいずれかのモードを室内温度センサ５
１の検知温度Ｔａとリモコン５４での設定温度Ｔｓとの
差に応じて選択する手段。[6] Means for executing the cooling operation for a predetermined time when the dry operation is started. [7] At the time of dry operation, the indoor temperature sensor 5 is set to any one of a cooling dry mode, a cold dry mode, an isothermal dry mode, and a warm dry mode with different blown air temperatures.
Means for selecting according to the difference between the detected temperature Ta of 1 and the set temperature Ts of the remote controller 54.
【００２９】［８］ドライ運転時、室内湿度センサ５２
の検知湿度Ｈａが設定湿度Ｈｓ（設定温度Ｔｓに応じて
自動的に定まる）を基準とする低湿度領域Ａ、適湿度領
域Ｂ、高湿度領域Ｃのどこに存するかに応じて除湿能力
を制御する手段。[8] Indoor humidity sensor 52 during dry operation
The dehumidifying ability is controlled according to where the detected humidity Ha is in the low humidity region A, the appropriate humidity region B, or the high humidity region C with reference to the set humidity Hs (which is automatically determined according to the set temperature Ts). means.
【００３０】［９］ドライ運転時、室内湿度センサ５２
の検知湿度Ｈａが低湿度領域Ａに存したまま所定時間に
わたり変化しないとき除湿能力を低減し、高湿度領域Ｃ
に存したまま所定時間にわたり変化しないとき除湿能力
を増大する手段。[9] Indoor humidity sensor 52 during dry operation
When the detected humidity Ha in the low humidity area A does not change for a predetermined time while remaining in the low humidity area A, the dehumidifying capacity is reduced, and the high humidity area C
Means to increase dehumidification capacity when it does not change for a certain period of time.
【００３１】［10］選択したモードに変化がないまま所
定時間が経過すると、設定温度Ｔｓを補正する手段。 ［11］ドライ運転時、室内温度センサ５１の検知温度Ｔ
ａが設定温度Ｔｓより低くその差が設定値Ｔ2 以上のと
き、しかも外気温度センサ６３の検知温度Ｔｏが設定温
度Ｔｓより低くその差が所定値以上のとき、ドライ運転
を中断して暖房運転を実行する手段。[10] A means for correcting the set temperature Ts when a predetermined time elapses without changing the selected mode. [11] Temperature T detected by the indoor temperature sensor 51 during dry operation
When a is lower than the set temperature Ts and the difference is the set value T 2 or more, and when the detected temperature To of the outside air temperature sensor 63 is lower than the set temperature Ts and the difference is the predetermined value or more, the dry operation is interrupted to perform the heating operation. Means to perform.
【００３２】［12］この暖房運転の実行に際し、室内温
度センサ５１の検知温度Ｔａと設定温度Ｔｓとの差が設
定値Ｔ1 （＜Ｔ2 ）内に収まると、その暖房運転を終了
してドライ運転に復帰する手段。[12] When the heating operation is executed, when the difference between the temperature Ta detected by the indoor temperature sensor 51 and the set temperature Ts falls within the set value T 1 (<T 2 ), the heating operation is terminated. Means to return to dry operation.
【００３３】次に、上記の構成の作用を説明する。 ［暖房運転］リモコン５４で暖房運転モードおよび室内
温度Ｔｓが設定され、かつ運転開始操作がなされたとす
る。この場合、室内温度センサ５１の検知温度Ｔａが設
定温度Ｔｓより低ければ、圧縮機１を起動して暖房運転
を開始する。Next, the operation of the above configuration will be described. [Heating operation] It is assumed that the heating operation mode and the room temperature Ts are set by the remote controller 54, and the operation start operation is performed. In this case, if the detected temperature Ta of the indoor temperature sensor 51 is lower than the set temperature Ts, the compressor 1 is started and the heating operation is started.
【００３４】すなわち、圧縮機１の吐出冷媒は四方弁２
を通って第２室内熱交換器９に入る。第２室内熱交換器
９に入った冷媒は、全開状態のＰＭＶ８を通って第１室
内熱交換器７にも流入する。この室内熱交換器９，７で
は、冷媒が室内空気に熱を放出して液化する。室内熱交
換器９，７を経た冷媒はＰＭＶ６で減圧され、運転オン
状態（バーナ１１が着火）の冷媒加熱器５に入る。冷媒
加熱器５では、冷媒が燃焼熱により気化する。この冷媒
加熱器５を経た冷媒は、四方弁２を通って圧縮機１に戻
る。That is, the refrigerant discharged from the compressor 1 is the four-way valve 2.
To enter the second indoor heat exchanger 9. The refrigerant that has entered the second indoor heat exchanger 9 also flows into the first indoor heat exchanger 7 through the PMV 8 in the fully opened state. In the indoor heat exchangers 9 and 7, the refrigerant releases heat to indoor air and liquefies. The refrigerant having passed through the indoor heat exchangers 9 and 7 is decompressed by the PMV 6 and enters the refrigerant heater 5 in the operation-on state (burner 11 is ignited). In the refrigerant heater 5, the refrigerant is vaporized by the heat of combustion. The refrigerant having passed through the refrigerant heater 5 returns to the compressor 1 through the four-way valve 2.
【００３５】こうして、室内熱交換器９，７が凝縮器、
冷媒加熱器５が蒸発器として働くことにより、室内が暖
房される。室内温度Ｔａが設定温度Ｔｓに達すると、圧
縮機１の運転および冷媒加熱器５の運転がオフし、暖房
が中断する。その後、室内温度Ｔａが設定温度Ｔｓを下
回ると、圧縮機１の運転および冷媒加熱器５の運転がオ
ンし、暖房再開となる。In this way, the indoor heat exchangers 9 and 7 are condensers,
The refrigerant heater 5 functions as an evaporator to heat the room. When the indoor temperature Ta reaches the set temperature Ts, the operation of the compressor 1 and the operation of the refrigerant heater 5 are turned off, and the heating is interrupted. After that, when the indoor temperature Ta falls below the set temperature Ts, the operation of the compressor 1 and the operation of the refrigerant heater 5 are turned on, and the heating is restarted.
【００３６】［冷房運転］リモコン５４で冷房運転モー
ドが設定され、かつ運転開始操作がなされたとする。こ
の場合、室内温度Ｔａがリモコン設定温度Ｔｓより高け
れば、圧縮機１を起動して冷房運転を開始する。[Cooling Operation] It is assumed that the cooling operation mode is set by the remote controller 54 and the operation start operation is performed. In this case, if the indoor temperature Ta is higher than the remote control set temperature Ts, the compressor 1 is started and the cooling operation is started.
【００３７】すなわち、圧縮機１の吐出冷媒は四方弁２
を通って室外熱交換器３に入る。この室外熱交換器３で
は、冷媒が外気に熱を放出して液化する。室外熱交換器
３を経た冷媒は運転オフ状態の冷媒加熱器５を通り、Ｐ
ＭＶ６で減圧され、第１室内熱交換器７に入る。第１室
内熱交換器７に入った冷媒は、全開状態のＰＭＶ８を通
って第２室内熱交換器９にも入る。この室内熱交換器
７，９では、冷媒が室内空気から熱を奪って気化する。
室内熱交換器７，９を経た冷媒は四方弁２および逆止弁
１０を通って圧縮機１に戻る。That is, the refrigerant discharged from the compressor 1 is the four-way valve 2.
And enters the outdoor heat exchanger 3. In the outdoor heat exchanger 3, the refrigerant releases heat to the outside air and is liquefied. The refrigerant passing through the outdoor heat exchanger 3 passes through the refrigerant heater 5 in the operation-off state,
It is decompressed by MV6 and enters the first indoor heat exchanger 7. The refrigerant that has entered the first indoor heat exchanger 7 also enters the second indoor heat exchanger 9 through the PMV 8 that is fully open. In the indoor heat exchangers 7 and 9, the refrigerant takes heat from the indoor air and vaporizes it.
The refrigerant that has passed through the indoor heat exchangers 7 and 9 returns to the compressor 1 through the four-way valve 2 and the check valve 10.
【００３８】こうして、室内熱交換器７，９が蒸発器、
冷媒加熱器５が凝縮器として働くことにより、室内が冷
房される。室内温度Ｔａが設定温度Ｔｓに達すると、圧
縮機１の運転がオフし、冷房が中断する。その後、室内
温度Ｔａが設定温度Ｔｓを上回ると、圧縮機１の運転が
オンし、冷房再開となる。Thus, the indoor heat exchangers 7 and 9 are evaporators,
By operating the refrigerant heater 5 as a condenser, the room is cooled. When the indoor temperature Ta reaches the set temperature Ts, the operation of the compressor 1 is turned off and the cooling is interrupted. After that, when the indoor temperature Ta exceeds the set temperature Ts, the operation of the compressor 1 is turned on and the cooling is restarted.
【００３９】［ドライ運転］リモコン３１でドライ運転
モードが設定され、かつ運転開始操作がなされたとす
る。この場合、冷房運転時と同じく実線矢印の方向に冷
媒を流すが、ＰＭＶ６を全開してＰＭＶ８の開度を絞
り、これにより第１室内熱交換器７を室外熱交換器３と
同じ凝縮器（再熱器）として機能させ、第２室内熱交換
器９を蒸発器として機能させる。[Dry operation] It is assumed that the dry operation mode is set by the remote controller 31 and the operation for starting the operation is performed. In this case, the refrigerant flows in the direction of the solid line arrow as in the cooling operation, but the PMV 6 is fully opened to reduce the opening of the PMV 8, whereby the first indoor heat exchanger 7 and the outdoor heat exchanger 3 are the same condenser ( The second indoor heat exchanger 9 functions as an evaporator.
【００４０】したがって、室内ユニットＹｂに吸い込ま
れる室内空気は第２室内熱交換器９でまず冷却および除
湿され、それが第１室内熱交換器７で再熱され、除湿空
気として室内に吹出される。Therefore, the indoor air sucked into the indoor unit Yb is first cooled and dehumidified by the second indoor heat exchanger 9, which is reheated by the first indoor heat exchanger 7 and blown into the room as dehumidified air. .
【００４１】このドライ運転には複数のモードがあり、
図４に示すゾーン制御条件に応じて、暖気味ドライモー
ド、等温ドライモード、冷気味ドライモード、冷房ドラ
イモードのいずれかのモードを選択する。このモード選
択の制御を図５のフローチャートに示す。This dry operation has a plurality of modes,
Depending on the zone control conditions shown in FIG. 4, any one of the warm dry mode, the isothermal dry mode, the cool dry mode, and the cooling dry mode is selected. The control of this mode selection is shown in the flowchart of FIG.
【００４２】図４のゾーン制御条件は、設定温度Ｔｓに
対する室内温度Ｔａの差を縦軸にとり、その縦軸に沿う
複数のゾーンに上記各モードを割り当て、また設定湿度
Ｈｓに対する室内湿度Ｈａの差を横軸にとり、その横軸
に沿う低湿度領域Ａ、適湿度領域Ｂ、高湿度領域Ｃに除
湿能力の制御値“大”“小”を割り当てている。In the zone control conditions of FIG. 4, the vertical axis represents the difference between the room temperature Ta and the set temperature Ts, the above modes are assigned to a plurality of zones along the vertical axis, and the difference between the indoor humidity Ha and the set humidity Hs. The horizontal axis is taken as the horizontal axis, and the low humidity area A, the appropriate humidity area B, and the high humidity area C along the horizontal axis are assigned the control values "large" and "small" of the dehumidifying ability.
【００４３】たとえば、室内温度Ｔａが設定温度Ｔｓよ
り高く、温度差が 3deg 以上では、冷房ドライモードを
選択する。室内温度Ｔａが設定温度Ｔｓと同じまたはそ
れより高く、温度差が 0deg 以上， 3deg 未満の範囲で
は、冷気味ドライモードを選択する。室内温度Ｔａが設
定温度Ｔｓより低く、温度差が 0deg 以上， 1deg 未満
の範囲では、等温ドライモードを選択する。室内温度Ｔ
ａが設定温度Ｔｓより低く、温度差が１deg 以上では、
暖気味ドライモードを選択する。For example, when the room temperature Ta is higher than the set temperature Ts and the temperature difference is 3 deg or more, the cooling dry mode is selected. The cold dry mode is selected when the room temperature Ta is equal to or higher than the set temperature Ts and the temperature difference is in the range of 0 deg or more and less than 3 deg. The isothermal dry mode is selected when the room temperature Ta is lower than the set temperature Ts and the temperature difference is 0 deg or more and less than 1 deg. Room temperature T
When a is lower than the set temperature Ts and the temperature difference is 1 deg or more,
Select the warm dry mode.
【００４４】暖気味ドライモードは、冷媒加熱器５を微
弱燃焼で運転オンし、かつ室外ファン２１の運転をオフ
し、これにより第１室内熱交換器７の再熱量を多くして
温度の高い空気を室内へ吹出す運転である。In the warm and dry mode, the refrigerant heater 5 is turned on with weak combustion and the outdoor fan 21 is turned off, thereby increasing the amount of reheat of the first indoor heat exchanger 7 and raising the temperature. This is an operation that blows air into the room.
【００４５】等温ドライモードは、冷媒加熱器５を微弱
燃焼で運転オンし、かつ室外ファン２１を微速度で運転
し、これにより第１室内熱交換器７の再熱量を暖気味ド
ライモードの場合よりも少なくして室内温度とほぼ同じ
温度の空気を室内へ吹出す運転である。In the isothermal dry mode, the refrigerant heater 5 is operated in a weak combustion mode and the outdoor fan 21 is operated at a slight speed, so that the reheat amount of the first indoor heat exchanger 7 is warm in the dry mode. It is an operation to blow air into the room at a temperature that is substantially the same as the room temperature by reducing the air temperature.
【００４６】冷気味ドライモードは、冷媒加熱器５の運
転をオフし、かつ室外ファン２１の速度を低速度で運転
し、これにより第１室内熱交換器７の再熱量を等温ドラ
イモードの場合よりも少なくして室内温度よりやや低い
温度の空気を吹出す運転である。In the cool dry mode, the operation of the refrigerant heater 5 is turned off and the outdoor fan 21 is operated at a low speed, whereby the reheat amount of the first indoor heat exchanger 7 is in the isothermal dry mode. It is an operation that blows out air at a temperature slightly lower than the room temperature by reducing the temperature.
【００４７】冷房ドライモードは、冷媒加熱器５の運転
をオフし、かつＰＭＶ６を絞ってＰＭＶ８を全開し、こ
れにより室内熱交換器７，９を共に蒸発器として機能さ
せる実質的には冷房運転であり、ただ本来の冷房と異な
るのは室外ファン２１を中速度で運転して室外熱交換器
３の放熱量を少なくし、これにより室内への吹出空気の
温度をあまり低くしない点である。つまり、弱冷房運転
に相等する。In the cooling dry mode, the operation of the refrigerant heater 5 is turned off, and the PMV 6 is throttled to fully open the PMV 8, whereby the indoor heat exchangers 7 and 9 both function as an evaporator. However, what is different from the original cooling is that the outdoor fan 21 is operated at a medium speed to reduce the heat radiation amount of the outdoor heat exchanger 3 and thereby the temperature of the air blown into the room is not lowered so much. That is, it is equivalent to the weak cooling operation.
【００４８】冷房ドライモードを除く他のドライモード
のことを、以下、サイクルによるドライモードと称す
る。除湿能力の制御については、運転開始時と運転中
（過渡時）の２通りがあり、図４のゾーン制御条件では
起動時の制御値を示している。The dry modes other than the cooling dry mode are hereinafter referred to as the cycle dry mode. There are two types of dehumidification control, one at the start of operation and one during operation (at the time of transition), and the zone control conditions in FIG. 4 show the control values at the start.
【００４９】すなわち、起動時は、室内湿度Ｈａが設定
湿度Ｈｓより 2.5％以上低い低湿度領域Ａにあるとき、
および室内湿度Ｈａが設定湿度Ｈｓを中心とする± 2.5
％内の適湿度領域Ｂにあるとき、“小”能力を決定し、
圧縮機１の能力（インバータ回路６１の出力周波数）を
下げて除湿能力を小さくする。室内湿度Ｈａが設定湿度
Ｈｓより 2.5％以上高い高湿度領域Ｃにあれば、“大”
能力を決定し、圧縮機１の能力を上げて除湿能力を大き
くする。That is, at start-up, when the indoor humidity Ha is in the low humidity area A lower than the set humidity Hs by 2.5% or more,
And the indoor humidity Ha is centered on the set humidity Hs ± 2.5
When it is in the proper humidity range B within%, the “small” capacity is determined,
The capacity of the compressor 1 (output frequency of the inverter circuit 61) is lowered to reduce the dehumidifying capacity. If the indoor humidity Ha is in the high humidity area C, which is higher than the set humidity Hs by 2.5% or more, "large"
The capacity is determined, and the capacity of the compressor 1 is increased to increase the dehumidification capacity.
【００５０】運転中は、図６のフローチャートに示すよ
うに、室内湿度Ｈａが低湿度領域Ａに入ったとき、３分
が経過するまではそれまでの除湿能力を保持するが、３
分が経過すると、除湿能力が過剰であるとの判断の下に
“小”能力を決定し、除湿能力を低減する。室内湿度Ｈ
ａが適湿度領域Ｂに入ると、それまでの除湿能力を保持
する。室内湿度Ｈａが高湿度領域Ｃに入ったとき、３分
が経過するまではそれまでの除湿能力を保持するが、３
分が経過すると、除湿能力が不足であるとの判断の下に
“大”能力を決定し、除湿能力を増大する。During operation, as shown in the flow chart of FIG. 6, when the indoor humidity Ha enters the low humidity region A, the dehumidifying capacity up to that point is maintained until 3 minutes elapse, but 3
After the lapse of minutes, the "small" capacity is determined based on the judgment that the dehumidifying capacity is excessive, and the dehumidifying capacity is reduced. Indoor humidity H
When a enters the proper humidity region B, the dehumidifying ability up to that point is retained. When the indoor humidity Ha enters the high humidity region C, the dehumidifying capacity up to that time is maintained until 3 minutes have passed, but
After a lapse of minutes, the "large" capacity is determined based on the judgment that the dehumidifying capacity is insufficient, and the dehumidifying capacity is increased.
【００５１】なお、設定湿度Ｈｓは、図７に示すよう
に、設定温度Ｔａに応じて自動的に決まるもので、リモ
コン５４で定常能力のノーマル運転モードが定められて
いる場合に選択するノーマル設定湿度と、リモコン５４
で高能力のパワフル運転モードが定められている場合に
選択するパワフル設定湿度とがある。たとえば、設定温
度Ｔａが２２℃の場合、ノーマル運転モードでは設定湿
度Ｈｓ＝６０％、パワフル運転モードでは設定湿度Ｈｓ
＝３５％を決定する。The set humidity Hs is automatically determined according to the set temperature Ta, as shown in FIG. 7, and is a normal setting selected when the normal operation mode of steady capacity is set by the remote controller 54. Humidity and remote control 54
There is a powerful set humidity to be selected when a high-performance powerful operation mode is defined in. For example, when the set temperature Ta is 22 ° C., the set humidity Hs = 60% in the normal operation mode, and the set humidity Hs in the powerful operation mode.
= 35% is determined.
【００５２】また、図８のフローチャートに示すよう
に、選択したモードに変化がないまま所定時間たとえば
５分間が経過すると、そのときの設定温度Ｔｓを補正す
る。すなわち、選択したモードに変化がないまま５分間
が経過したとき、そのときの室内温度Ｔａが設定温度Ｔ
ｓよりも高くてその差が2deg以上あれば、設定温度Ｔｓ
を低下方向に0.5deg補正する。この補正にもかかわら
ず、室内温度Ｔａと設定温度Ｔｓとの差がまだ2deg以上
あれば、設定温度Ｔｓを低下方向にさらに0.5deg補正す
る。ただし、この低下方向の補正の合計値ΔＴｓについ
て、3degの上限を定めている。Further, as shown in the flow chart of FIG. 8, when a predetermined time, for example, 5 minutes elapses without changing the selected mode, the set temperature Ts at that time is corrected. That is, when 5 minutes have passed without any change in the selected mode, the room temperature Ta at that time is set to the set temperature T.
If it is higher than s and the difference is 2deg or more, the set temperature Ts
Is corrected by 0.5 deg. Despite this correction, if the difference between the room temperature Ta and the set temperature Ts is still 2 deg or more, the set temperature Ts is further corrected by 0.5 deg in the decreasing direction. However, the upper limit of 3 deg is set for the total value ΔTs of the correction in the decreasing direction.
【００５３】選択したモードに変化がないまま５分間が
経過したときの室内温度Ｔａが設定温度Ｔｓよりも低
く、その差が2deg以上あれば、設定温度Ｔｓを上昇方向
に0.5deg補正する。この補正にもかかわらず、室内温度
Ｔａと設定温度Ｔｓとの差がまだ2deg以上あれば、設定
温度Ｔｓを上昇方向にさらに0.5deg補正する。ただし、
この上昇方向の補正の合計値ΔＴｓについても、3degの
上限を定めている。If the room temperature Ta when 5 minutes have passed without any change in the selected mode is lower than the set temperature Ts and the difference is 2 deg or more, the set temperature Ts is corrected by 0.5 deg in the upward direction. Despite this correction, if the difference between the indoor temperature Ta and the set temperature Ts is still 2 deg or more, the set temperature Ts is further corrected in the upward direction by 0.5 deg. However,
The upper limit of 3 deg is also set for the total correction value ΔTs in the upward direction.
【００５４】その後、室内温度Ｔａが設定温度Ｔｓを中
心とする±1deg未満に収まると、設定温度Ｔｓに対する
補正を解除する。このように、室内湿度Ｈａが低湿度領
域Ａにとどまると除湿能力を低減し、室内湿度Ｈａが高
湿度領域Ｃにとどまると除湿能力を増大し、さらには選
択したモードに変化がないときに設定温度Ｔｓを補正す
ることにより、単に室内温度Ｔａと設定温度Ｔｓとの差
に応じたモード選択および室内湿度Ｈａと設定湿度Ｈｓ
との差に応じた除湿能力制御を行なうだけの場合に比
べ、室内の温・湿度を目標値である設定温度Ｔｓおよび
設定湿度Ｈｓに迅速に収束させることができる。よっ
て、快適な室内環境を確実に得ることができ、信頼性が
向上する。After that, when the room temperature Ta falls within ± 1 deg centered on the set temperature Ts, the correction for the set temperature Ts is canceled. As described above, when the indoor humidity Ha stays in the low humidity area A, the dehumidifying capacity is reduced, when the indoor humidity Ha stays in the high humidity area C, the dehumidifying capacity is increased, and further, it is set when there is no change in the selected mode. By correcting the temperature Ts, the mode selection and the indoor humidity Ha and the set humidity Hs are simply made according to the difference between the indoor temperature Ta and the set temperature Ts.
Compared with the case where only the dehumidifying capacity control is performed according to the difference between the temperature and humidity, the room temperature and humidity can be quickly converged to the target temperature Ts and the target humidity Hs. Therefore, a comfortable indoor environment can be surely obtained, and reliability is improved.
【００５５】また、図４のゾーン制御条件に斜線で囲っ
て示すように、室内温度Ｔａが設定温度Ｔｓを中心とす
る+1deg ないし-2deg の範囲にあって、しかも室内湿度
Ｈａが低湿度領域Ａにあれば、ドライ運転を中断して室
内ファン２２のみの送風運転を実行する。As indicated by the shaded areas in the zone control conditions of FIG. 4, the room temperature Ta is in the range of +1 deg to -2 deg with the set temperature Ts as the center, and the room humidity Ha is in the low humidity region. If it is A, the dry operation is interrupted and only the indoor fan 22 is blown.
【００５６】同じく図４に斜線で囲って示すように、室
内温度Ｔａが設定温度Ｔｓより低くその差が設定値Ｔ2
（たとえば 5deg ）以上のとき、しかも外気温度センサ
６３の検知温度Ｔｏが設定温度Ｔｓより低くその差が所
定値（たとえば 8deg ）以上のとき、ドライ運転を中断
して暖房運転を実行する。その後、室内温度Ｔａと設定
温度Ｔｓとの差が設定値Ｔ1 （たとえば 3deg ）内に収
まると、暖房運転を終了してドライ運転に復帰する。Similarly, as indicated by hatching in FIG. 4, the room temperature Ta is lower than the set temperature Ts and the difference is the set value T 2
When (for example, 5 deg) or more, and when the detected temperature To of the outside air temperature sensor 63 is lower than the set temperature Ts and the difference is a predetermined value (for example, 8 deg) or more, the dry operation is interrupted and the heating operation is executed. After that, when the difference between the indoor temperature Ta and the set temperature Ts falls within the set value T 1 (for example, 3 deg), the heating operation is ended and the dry operation is resumed.
【００５７】このように、除湿中に気温が低下した場合
は暖房運転を割込み的に実行することにより、住人が肌
寒さを感じない。しかも、暖房運転を開始するための設
定値Ｔ2 と暖房運転を終了するための設定値Ｔ1 との間
にディファレンシャルを設けているので、暖房運転が頻
繁にオン，オフを繰返すことがなく、圧縮機１の寿命に
悪影響を与えない。As described above, when the temperature drops during dehumidification, the heating operation is interrupted to prevent the residents from feeling chills. Moreover, since the differential is provided between the set value T 2 for starting the heating operation and the set value T 1 for ending the heating operation, the heating operation does not frequently turn on and off repeatedly. It does not adversely affect the life of the compressor 1.
【００５８】一方、サイクルによるドライモードの運転
を開始する場合、その運転開始に際し所定時間（たとえ
ば１分間）だけ冷房ドライモードの運転（つまり弱冷房
運転）を実行する。そして、所定時間が経過したら、冷
房ドライモードからサイクルによるドライモードに移行
する。On the other hand, when the cycle dry mode operation is started, the cooling dry mode operation (that is, the weak cooling operation) is executed for a predetermined time (for example, 1 minute) at the start of the operation. Then, after a lapse of a predetermined time, the cooling dry mode is shifted to the cycle dry mode.
【００５９】すなわち、起動時は室外熱交換器３におけ
る冷媒の液化作用が不安定なため、すぐにＰＭＶ６を全
開してＰＭＶ８を絞ると、ガス混じりで圧力脈動の多い
液冷媒が室内ユニットＹｂに急激に流れ込み、それが絞
り状態のＰＭＶ８を通るときに液とガスの混じり合う
“ボコボコ”という冷媒音が発生する心配がある。この
冷媒音は住人にとって不快である。That is, since the liquefying action of the refrigerant in the outdoor heat exchanger 3 is unstable at the time of start-up, if the PMV 6 is fully opened immediately and the PMV 8 is throttled, liquid refrigerant with gas pulsation and large pressure pulsation is transferred to the indoor unit Yb. There is a concern that a sharply flowing refrigerant noise may be generated when liquid and gas mix when passing through the throttled PMV 8. This refrigerant noise is unpleasant for residents.
【００６０】そこで、起動時の運転がサイクルによるド
ライの場合、ＰＭＶ６を所定開度に設定し、かつＰＭＶ
８を全開し、先ず所定時間にわたる冷房ドライモードの
運転を実行する。この所定時間が経過したら、そこで初
めてＰＭＶ６を全開し、かつＰＭＶ８を絞り、実際のサ
イクルによるドライモードの運転に移行する。Therefore, when the start-up operation is a cycle dry operation, the PMV 6 is set to a predetermined opening and the PMV 6 is set.
8 is fully opened, and first, the operation in the cooling dry mode is executed for a predetermined time. After the lapse of this predetermined time, the PMV 6 is fully opened and the PMV 8 is throttled for the first time to shift to the dry mode operation in the actual cycle.
【００６１】このように、室外熱交換器３における冷媒
の液化作用が不安定なうちは、冷房ドライモードの運転
を実行してＰＭＶ８を全開状態に保つことにより、たと
えガス混じりの液冷媒がＰＭＶ８を通っても、そこには
抵抗分がないため、液とガスの混じり合うような不快な
冷媒音は生じない。As described above, while the liquefaction of the refrigerant in the outdoor heat exchanger 3 is unstable, the operation in the cooling dry mode is executed to keep the PMV 8 in the fully opened state, so that the liquid refrigerant mixed with the gas is PMV8. Even if it passes through, since there is no resistance there, no unpleasant refrigerant noise such as a mixture of liquid and gas does not occur.
【００６２】また、サイクルによるドライモードから冷
房ドライモード（つまり弱冷房運転）に移行する場合、
ＰＭＶ６を絞ってＰＭＶ８を全開するが、その全開時に
ＰＭＶ８の両側の圧力差に基づく冷媒音が発生する心配
がある。When shifting from the dry mode according to the cycle to the cooling dry mode (that is, the weak cooling operation),
Although the PMV 6 is narrowed down and the PMV 8 is fully opened, there is a concern that a refrigerant noise may be generated due to the pressure difference between both sides of the PMV 8 when the PMV 8 is fully opened.
【００６３】そこで、サイクルによるドライモードから
冷房ドライモードへの移行に際しては、所定時間（たと
えば２分３０秒）だけ、ドライ運転を停止して室内ファ
ン２２のみの送風運転を行なう。このドライ運転の停止
に際しては、ＰＭＶ８は非付勢状態となるため、ＰＭＶ
８は徐々に開度を増してやがてニュートラル状態の全開
となる。したがって、ＰＭＶ８の両側の圧力バランスが
とられ、冷媒音は発生しない。所定時間が経過したら、
送風運転から実際の冷房ドライモードの運転に移行す
る。なお、この発明は上記実施例に限定されるものでは
なく、要旨を変えない範囲で種々変形実施可能である。Therefore, when shifting from the dry mode to the cooling dry mode by the cycle, the dry operation is stopped for a predetermined time (for example, 2 minutes and 30 seconds) and only the indoor fan 22 is blown. When the dry operation is stopped, the PMV 8 is in the non-energized state.
No. 8 gradually increases the opening degree, and eventually becomes the full opening in the neutral state. Therefore, the pressure on both sides of the PMV 8 is balanced and no refrigerant noise is generated. When the predetermined time has passed,
Blower operation is switched to actual cooling dry mode operation. The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.
【００６４】[0064]
【発明の効果】以上述べたように、第１の発明の空気調
和機は、第１の発明の空気調和機は、ドライ運転時、吹
出空気温度の異なる冷房ドライモード、冷気味ドライモ
ード、等温ドライモード、暖気味ドライモードのいずれ
かのモードを室内温度センサの検知温度Ｔａと設定温度
Ｔｓとの差に応じて選択するとともに、室内湿度センサ
の検知湿度Ｈａが設定湿度Ｈｓを基準とする低湿度領
域、適湿度領域、高湿度領域のどこに存するかに応じて
除湿能力を制御し、さらに室内湿度センサの検知湿度Ｈ
ａが低湿度領域に存したまま所定時間にわたり変化しな
いときには除湿能力を低減し、高湿度領域に存したまま
所定時間にわたり変化しないときには除湿能力を増大
し、選択したモードに変化がないまま所定時間が経過す
れば設定温度Ｔｓを補正する構成としたので、室内の温
・湿度を目標値に迅速に収束させることができ、快適な
室内環境が確実に得られる。As described above, the air conditioner of the first aspect of the invention is the air conditioner of the first aspect of the invention, in the dry operation, the air-conditioning dry mode in which the blown air temperature is different, the cool taste dry mode, the isothermal condition. Either the dry mode or the warm dry mode is selected according to the difference between the detected temperature Ta of the indoor temperature sensor and the set temperature Ts, and the detected humidity Ha of the indoor humidity sensor is low based on the set humidity Hs. The dehumidifying ability is controlled according to where the humidity is, the proper humidity, or the high humidity, and the detected humidity H of the indoor humidity sensor
When a remains in the low humidity region and does not change for a predetermined time, the dehumidification capacity is reduced, and when it remains in the high humidity region for a predetermined time, the dehumidification capacity is increased, and the selected mode remains unchanged for the predetermined time. Since the set temperature Ts is corrected when the temperature has passed, the indoor temperature and humidity can be quickly converged to the target value, and a comfortable indoor environment can be reliably obtained.
【００６５】第２の発明の空気調和機は、第１の発明の
空気調和機の作用に加え、ドライ運転時、室内温度セン
サの検知温度Ｔａが設定温度Ｔｓより低くその差が設定
値Ｔ2 以上のとき、かつ外気温度センサの検知温度Ｔｏ
が設定温度Ｔｓより低くその差が所定値以上のとき、ド
ライ運転を中断して暖房運転を実行するとともに、この
暖房運転の実行に際し、室内温度センサの検知温度Ｔａ
と設定温度Ｔｓとの差が設定値Ｔ1 （＜Ｔ2 ）内に収ま
ると、その暖房運転を終了してドライ運転に復帰する構
成としたので、除湿中に気温が大きく低下した場合でも
住人に肌寒さを感じさせない。In the air conditioner of the second invention, in addition to the function of the air conditioner of the first invention, the detected temperature Ta of the indoor temperature sensor is lower than the set temperature Ts during the dry operation, and the difference is the set value T 2 At the above time, and the detected temperature To of the outside air temperature sensor
Is lower than the set temperature Ts and the difference is equal to or more than a predetermined value, the dry operation is interrupted to perform the heating operation, and at the time of performing the heating operation, the detected temperature Ta of the indoor temperature sensor is
When the difference between the temperature and the set temperature Ts falls within the set value T 1 (<T 2 ), the heating operation is terminated and the operation is returned to the dry operation. Therefore, even if the temperature greatly drops during dehumidification, the resident It doesn't feel chilly.
【図面の簡単な説明】[Brief description of drawings]
【図１】この発明の一実施例の冷凍サイクルの構成図。FIG. 1 is a configuration diagram of a refrigeration cycle according to an embodiment of the present invention.
【図２】同実施例の制御回路のブロック図。FIG. 2 is a block diagram of a control circuit of the embodiment.
【図３】同実施例の全体の作用を説明するためのフロー
チャート。FIG. 3 is a flowchart for explaining the overall operation of the same embodiment.
【図４】同実施例におけるドライ運転のゾーン制御条件
を示す図。FIG. 4 is a diagram showing zone control conditions for dry operation in the example.
【図５】同実施例におけるモード選択制御を説明するた
めのフローチャート。FIG. 5 is a flowchart for explaining mode selection control in the same embodiment.
【図６】同実施例における除湿能力制御を説明するため
のフローチャート。FIG. 6 is a flowchart for explaining dehumidifying ability control in the same embodiment.
【図７】同実施例におけるドライ運転時の設定温度と設
定湿度の関係を示す図。FIG. 7 is a diagram showing a relationship between a set temperature and a set humidity during a dry operation in the example.
【図８】同実施例におけるドライ運転時の設定温度補正
を説明するためのフローチャート。FIG. 8 is a flowchart for explaining correction of a set temperature during a dry operation in the embodiment.
１…圧縮機、２…四方弁、３…室外熱交換器、５…冷媒
加熱器、６…ＰＭＶ、７…第１室内熱交換器、８…ＰＭ
Ｖ、９…第２室内熱交換器、２１…室外ファン、２２…
室内ファン、５０…室内制御部、６０…室外制御部。1 ... Compressor, 2 ... Four-way valve, 3 ... Outdoor heat exchanger, 5 ... Refrigerant heater, 6 ... PMV, 7 ... First indoor heat exchanger, 8 ... PM
V, 9 ... 2nd indoor heat exchanger, 21 ... Outdoor fan, 22 ...
Indoor fan, 50 ... Indoor control unit, 60 ... Outdoor control unit.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 太田 貴士 静岡県富士市蓼原336番地 株式会社東芝 富士工場内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takashi Ota 336 Tatehara, Fuji City, Shizuoka Prefecture Toshiba Corporation Fuji Factory
Claims (2)
圧器、第１室内熱交換器、電子膨張弁、第２室内熱交換
器を接続した冷凍サイクルと、 室内温度Ｔａを検知する室内温度センサと、 室内湿度Ｈａを検知する室内湿度センサと、 室内温度Ｔｓおよび室内湿度Ｈｓを設定するための操作
手段と、 前記圧縮機の吐出冷媒を室外熱交換器、減圧器、第１室
内熱交換器、電子膨張弁、第２室内熱交換器に通して圧
縮機に戻しかつ電子膨張弁を全開して冷房運転を実行す
る手段と、 前記圧縮機の吐出冷媒を室外熱交換器、冷媒加熱器、第
１室内熱交換器、電子膨張弁、第２室内熱交換器に通し
て圧縮機に戻しかつ電子膨張弁を絞ってドライ運転を実
行する手段と、 ドライ運転時、吹出空気温度の異なる冷房ドライモー
ド、冷気味ドライモード、等温ドライモード、暖気味ド
ライモードのいずれかのモードを前記室内温度センサの
検知温度Ｔａと設定温度Ｔｓとの差に応じて選択する手
段と、 ドライ運転時、前記室内湿度センサの検知湿度Ｈａが設
定湿度Ｈｓを基準とする低湿度領域、適湿度領域、高湿
度領域のどこに存するかに応じて除湿能力を制御する手
段と、 ドライ運転時、前記室内湿度センサの検知湿度Ｈａが前
記低湿度領域に存したまま所定時間にわたり変化しない
とき除湿能力を低減し、前記高湿度領域に存したまま所
定時間にわたり変化しないとき除湿能力を増大する手段
と、 前記選択したモードに変化がないまま所定時間が経過す
ると、設定温度Ｔｓを補正する手段とを備えたことを特
徴とする空気調和機。1. A refrigeration cycle in which a compressor, an outdoor heat exchanger, a refrigerant heater, a pressure reducer, a first indoor heat exchanger, an electronic expansion valve, a second indoor heat exchanger are connected, and an indoor temperature Ta is detected. Indoor temperature sensor, indoor humidity sensor for detecting indoor humidity Ha, operating means for setting indoor temperature Ts and indoor humidity Hs, refrigerant discharged from the compressor to an outdoor heat exchanger, a pressure reducer, and a first chamber Means for returning to the compressor through the heat exchanger, the electronic expansion valve, and the second indoor heat exchanger, and fully opening the electronic expansion valve to perform the cooling operation; and the refrigerant discharged from the compressor, the outdoor heat exchanger, the refrigerant. A means for performing a dry operation by returning to the compressor through the heater, the first indoor heat exchanger, the electronic expansion valve, and the second indoor heat exchanger, and squeezing the electronic expansion valve to perform a dry operation. Different cooling dry mode, cold dry mode, etc. Means for selecting either the warm dry mode or the warm dry mode according to the difference between the detected temperature Ta of the indoor temperature sensor and the set temperature Ts, and the detected humidity Ha of the indoor humidity sensor during dry operation. A means for controlling the dehumidifying capacity depending on where the low humidity area is based on the set humidity Hs, an appropriate humidity area, or a high humidity area; and during dry operation, the detected humidity Ha of the indoor humidity sensor is the low humidity area. Means for decreasing the dehumidifying capacity when it does not change for a predetermined time while remaining in the high humidity region, and increasing the dehumidifying capacity when it does not change for a predetermined time while remaining in the high humidity region, and the predetermined time without changing the selected mode. An air conditioner comprising: means for correcting the set temperature Ts when the time passes.
弁、第１室内熱交換器、減圧器、冷媒加熱器に通して圧
縮機に戻し、かつ冷媒加熱器を運転オンして電子膨張弁
の全開し暖房運転を実行する手段と、 外気温度Ｔｏを検知する外気温度センサと、 ドライ運転時、前記室内温度センサの検知温度Ｔａが設
定温度Ｔｓより低くその差が設定値Ｔ2 以上のとき、か
つ前記外気温度センサの検知温度Ｔｏが設定温度Ｔｓよ
り低くその差が所定値以上のとき、ドライ運転を中断し
て前記暖房運転を実行する手段と、 この暖房運転の実行に際し、前記室内温度センサの検知
温度Ｔａと設定温度Ｔｓとの差が設定値Ｔ1 （＜Ｔ2 ）
内に収まると、その暖房運転を終了してドライ運転に復
帰する手段とを備えたことを特徴とする。2. The air conditioner according to claim 1, wherein the refrigerant discharged from the compressor is passed through a second indoor heat exchanger, an electronic expansion valve, a first indoor heat exchanger, a pressure reducer, and a refrigerant heater to be compressed. Means for returning to the machine and turning on the refrigerant heater to fully open the electronic expansion valve to execute the heating operation, an outside air temperature sensor for detecting the outside air temperature To, and a detection temperature Ta of the indoor temperature sensor during the dry operation. Is lower than the set temperature Ts and the difference is a set value T 2 or more, and when the detected temperature To of the outside air temperature sensor is lower than the set temperature Ts and the difference is a predetermined value or more, the dry operation is interrupted and the heating operation is performed. And a difference between the detected temperature Ta of the indoor temperature sensor and the set temperature Ts when the heating operation is performed is set value T 1 (<T 2 ).
And a means for ending the heating operation and returning to the dry operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18265193A JP3194652B2 (en) | 1993-07-23 | 1993-07-23 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18265193A JP3194652B2 (en) | 1993-07-23 | 1993-07-23 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0735389A true JPH0735389A (en) | 1995-02-07 |
| JP3194652B2 JP3194652B2 (en) | 2001-07-30 |
Family
ID=16122045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18265193A Expired - Fee Related JP3194652B2 (en) | 1993-07-23 | 1993-07-23 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3194652B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5900409A (en) * | 1994-11-08 | 1999-05-04 | Kabushiki Kaisha Yakult Honsha | Cerebration improver |
| JP2001263763A (en) * | 2000-03-16 | 2001-09-26 | Daikin Ind Ltd | Air conditioner |
| JP2007147242A (en) * | 2005-11-30 | 2007-06-14 | Daikin Ind Ltd | Air conditioner |
| JP2011021881A (en) * | 2010-10-29 | 2011-02-03 | Mitsubishi Electric Corp | Air conditioner |
| JP2012112584A (en) * | 2010-11-25 | 2012-06-14 | Fujitsu General Ltd | Air conditioning system, and heating appliance and remote controller used in the same |
| EP2513244B1 (en) | 2009-12-18 | 2020-09-16 | Arkema France | Method using heat-transfer fluids having reduced flammability |
| JP2021110473A (en) * | 2020-01-07 | 2021-08-02 | シャープ株式会社 | Air conditioner and air conditioning system |
| CN113418277A (en) * | 2021-03-22 | 2021-09-21 | 青岛海尔空调电子有限公司 | Systems, methods, and apparatus for temperature and humidity dual control |
-
1993
- 1993-07-23 JP JP18265193A patent/JP3194652B2/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5900409A (en) * | 1994-11-08 | 1999-05-04 | Kabushiki Kaisha Yakult Honsha | Cerebration improver |
| US6117853A (en) * | 1994-11-08 | 2000-09-12 | Kabushiki Kaisha Yakult Honsha | Cerebration improver |
| JP2001263763A (en) * | 2000-03-16 | 2001-09-26 | Daikin Ind Ltd | Air conditioner |
| JP2007147242A (en) * | 2005-11-30 | 2007-06-14 | Daikin Ind Ltd | Air conditioner |
| EP2513244B1 (en) | 2009-12-18 | 2020-09-16 | Arkema France | Method using heat-transfer fluids having reduced flammability |
| US11352533B2 (en) | 2009-12-18 | 2022-06-07 | Arkema France | Heat-transfer fluids having reduced flammability |
| JP2011021881A (en) * | 2010-10-29 | 2011-02-03 | Mitsubishi Electric Corp | Air conditioner |
| JP2012112584A (en) * | 2010-11-25 | 2012-06-14 | Fujitsu General Ltd | Air conditioning system, and heating appliance and remote controller used in the same |
| JP2021110473A (en) * | 2020-01-07 | 2021-08-02 | シャープ株式会社 | Air conditioner and air conditioning system |
| CN113418277A (en) * | 2021-03-22 | 2021-09-21 | 青岛海尔空调电子有限公司 | Systems, methods, and apparatus for temperature and humidity dual control |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3194652B2 (en) | 2001-07-30 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |