JPH0626689A - Multiple type air conditioner - Google Patents
Multiple type air conditionerInfo
- Publication number
- JPH0626689A JPH0626689A JP4184102A JP18410292A JPH0626689A JP H0626689 A JPH0626689 A JP H0626689A JP 4184102 A JP4184102 A JP 4184102A JP 18410292 A JP18410292 A JP 18410292A JP H0626689 A JPH0626689 A JP H0626689A
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- outdoor heat
- outdoor
- temperature sensors
- compressor
- 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
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Air Conditioning Control Device (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、室外ユニットに複数
の室内ユニットを接続したマルチ式空気調和機に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-type air conditioner in which a plurality of indoor units are connected to an outdoor unit.
【０００２】[0002]
【従来の技術】部屋数の多いビルディング等では、複数
の室内ユニットを有するマルチ式空気調和機が用いられ
る。2. Description of the Related Art In a building having a large number of rooms, a multi-type air conditioner having a plurality of indoor units is used.
【０００３】このマルチ式空気調和機は、室外ユニット
に圧縮機および室外熱交換器を設け、各室内ユニットに
室内熱交換器を設け、その圧縮機、室外熱交換器、各室
内熱交換器を接続して冷凍サイクルを構成している。In this multi-type air conditioner, an outdoor unit is provided with a compressor and an outdoor heat exchanger, each indoor unit is provided with an indoor heat exchanger, and the compressor, the outdoor heat exchanger, and each indoor heat exchanger are installed. Connect to form a refrigeration cycle.
【０００４】この冷凍サイクルでは、圧縮機の吐出冷媒
を室外熱交換器に流し、さらに各室内熱交換器へと流し
て圧縮機に戻すことにより、室外熱交換器が凝縮器、各
室内熱交換器が蒸発器として機能し、複数の部屋を冷房
することができる。また、圧縮機の吐出冷媒を各室外熱
交換器に流し、さらに室外熱交換器へと流して圧縮機に
戻すことにより、各室内熱交換器が凝縮器、室外熱交換
器が蒸発器として機能し、複数の部屋を暖房することが
できる。In this refrigeration cycle, the refrigerant discharged from the compressor is caused to flow to the outdoor heat exchanger, and further to each indoor heat exchanger to be returned to the compressor, whereby the outdoor heat exchanger becomes a condenser and each indoor heat exchanger is exchanged. The container acts as an evaporator and can cool multiple rooms. In addition, the refrigerant discharged from the compressor flows to each outdoor heat exchanger, and then to the outdoor heat exchanger and returns to the compressor, so that each indoor heat exchanger functions as a condenser and the outdoor heat exchanger functions as an evaporator. However, multiple rooms can be heated.
【０００５】ところで、暖房時は、蒸発器として機能す
る室外熱交換器の表面に徐々に霜が付着し、そのままで
は熱交換量が減少して暖房能力の低下を生じてしまう。
このため、室外熱交換器に温度センサを取付けて蒸発気
温度を検知し、その検知温度に応じて室外熱交換器に対
する除霜運転を実行するのが普通となっている。By the way, during heating, frost gradually adheres to the surface of the outdoor heat exchanger functioning as an evaporator, and if the frost is left as it is, the amount of heat exchange decreases and the heating capacity deteriorates.
Therefore, it is common to attach a temperature sensor to the outdoor heat exchanger to detect the evaporative gas temperature and execute the defrosting operation on the outdoor heat exchanger according to the detected temperature.
【０００６】[0006]
【発明が解決しようとする課題】上記の冷凍サイクルで
は、複数の室内熱交換器の負荷を１つの室外熱交換器で
賄うため、室外熱交換器の容量が大形化する傾向があ
る。また、室外ユニットのコンパクト化などに伴い、室
外熱交換器が複数の熱交換器に分割されるなど形状が複
雑になる傾向もある。In the above refrigeration cycle, since the load of a plurality of indoor heat exchangers is covered by one outdoor heat exchanger, the capacity of the outdoor heat exchanger tends to increase. Further, as the outdoor unit is made compact, the outdoor heat exchanger tends to be complicated in shape such as being divided into a plurality of heat exchangers.
【０００７】このため、適切な着霜検知が困難となり、
着霜があるのになかなか除霜運転に入らなかったり、あ
るいは除霜が完了しているのにいつまでも除霜運転が続
くなどの不具合を生じ、暖房効率に悪影響を与えること
がある。For this reason, it becomes difficult to detect frost appropriately,
There may be a problem that the defrosting operation does not start easily despite the presence of frost, or the defrosting operation continues forever even though the defrosting is completed, which adversely affects the heating efficiency.
【０００８】この発明は上記の事情を考慮したもので、
その目的とするところは、室外熱交換器の容量が大きか
ったり形状が複雑であっても、それに影響を受けること
なく室外熱交換器の適切な除霜を可能として暖房効率の
向上が図れるマルチ式空気調和機を提供することにあ
る。The present invention takes the above circumstances into consideration,
The purpose is a multi-type that can improve the heating efficiency by allowing proper defrosting of the outdoor heat exchanger without being affected by it even if the outdoor heat exchanger has a large capacity or a complicated shape. To provide an air conditioner.
【０００９】[0009]
【課題を解決するための手段】請求項１のマルチ式空気
調和機は、圧縮機の吐出冷媒を室内熱交換器、減圧器、
室外熱交換器に通して圧縮機に戻し暖房運転を実行する
手段と、室外熱交換器の複数箇所に設けた複数個の温度
センサと、これら温度センサの検知温度のうち低い方に
応じて室外熱交換器に対する除霜運転を実行する手段と
を備える。According to a first aspect of the present invention, there is provided a multi-type air conditioner in which a refrigerant discharged from a compressor is an indoor heat exchanger, a pressure reducer,
A means for performing a heating operation by returning to the compressor through the outdoor heat exchanger, a plurality of temperature sensors provided at a plurality of locations of the outdoor heat exchanger, and the outdoor according to whichever of the detected temperatures of these temperature sensors is lower. Means for performing a defrosting operation on the heat exchanger.
【００１０】請求項２のマルチ式空気調和機は、圧縮機
の吐出冷媒を室内熱交換器、減圧器、室外熱交換器に通
して圧縮機に戻し暖房運転を実行する手段と、室外熱交
換器の複数箇所に設けた複数個の温度センサと、これら
温度センサの検知温度の平均値に応じて室外熱交換器に
対する除霜運転を実行する手段とを備える。In the multi-type air conditioner of the second aspect, the discharge refrigerant of the compressor is passed through the indoor heat exchanger, the pressure reducer, and the outdoor heat exchanger and returned to the compressor to perform the heating operation, and the outdoor heat exchanger. It is provided with a plurality of temperature sensors provided at a plurality of locations of the vessel, and means for performing a defrosting operation on the outdoor heat exchanger according to the average value of the temperatures detected by these temperature sensors.
【００１１】[0011]
【作用】請求項１のマルチ式空気調和機では、暖房運転
時、蒸発器として機能する室外熱交換器の複数箇所の温
度を検知し、これら検知温度のうち低い方に応じて室外
熱交換器に対する除霜運転を実行する。In the multi-type air conditioner of claim 1, during heating operation, the temperatures of the outdoor heat exchanger functioning as an evaporator are detected, and the outdoor heat exchanger is detected according to the lower one of the detected temperatures. Defrosting operation is performed on.
【００１２】請求項２のマルチ式空気調和機では、暖房
運転時、蒸発器として機能する室外熱交換器の複数箇所
の温度を検知し、これら検知温度の平均値に応じて室外
熱交換器に対する除霜運転を実行する。In the multi-type air conditioner of the second aspect, the temperature of the outdoor heat exchanger functioning as an evaporator is detected during the heating operation, and the outdoor heat exchanger is detected according to the average value of the detected temperatures. Execute the defrosting operation.
【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において、Ａは１台の室外ユニッ
トで、この室外ユニットＡに分配ユニットＢを介して複
数台の室内ユニットＣ1 ，Ｃ2 ，Ｃ3 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. In FIG. 1, A is one outdoor unit, and a plurality of indoor units C 1 , C 2 , C 3 are connected to this outdoor unit A via a distribution unit B by piping.
【００１４】室外ユニットＡは、圧縮機１，２を備え
る。これら圧縮機１，２は、それぞれ１つの密閉ケース
内に２つの圧縮機を内蔵したものである。すなわち、圧
縮機１は、インバータ駆動の能力可変圧縮機３、および
商用電源駆動の能力固定圧縮機４を有する。圧縮機２
は、インバータ駆動の能力可変圧縮機５、および商用電
源駆動の能力固定圧縮機６を有する。The outdoor unit A includes compressors 1 and 2. Each of the compressors 1 and 2 has two compressors built in one hermetically sealed case. That is, the compressor 1 has an inverter-driven variable capacity compressor 3 and a commercial power source-driven fixed capacity compressor 4. Compressor 2
Has a variable capacity compressor 5 driven by an inverter and a fixed capacity compressor 6 driven by a commercial power source.
【００１５】これら圧縮機３，４，５，６の吐出口に、
それぞれ逆止弁７を順方向に介し、さらに四方弁８を介
し、室外熱交換器９を接続する。室外熱交換器９に冷房
サイクル形成用の逆止弁１０および受液器１１を介して
ヘッダＨを接続する。逆止弁１０と並列に、暖房用の膨
張弁（減圧器）１２を接続する。At the discharge ports of these compressors 3, 4, 5 and 6,
The outdoor heat exchanger 9 is connected through the check valve 7 in the forward direction and the four-way valve 8, respectively. The header H is connected to the outdoor heat exchanger 9 via the check valve 10 for forming a cooling cycle and the liquid receiver 11. An expansion valve (pressure reducer) 12 for heating is connected in parallel with the check valve 10.
【００１６】ヘッダＨに、流量調整弁２１，３１，４１
および冷房用の膨張弁（減圧器）２２，３２，４２と暖
房サイクル形成用の逆止弁２３，３３，４３との並列回
路を介し、室内熱交換器２４，３４，４４を接続する。
室内熱交換器２４，３４，４４にヘッダＨを接続し、そ
のヘッダＨを四方弁８およびアキュ―ムレ―タ１３を介
して圧縮機３，４，５，６の吸込口に接続する。The header H is provided with flow rate adjusting valves 21, 31, 41.
The indoor heat exchangers 24, 34, 44 are connected via a parallel circuit of the expansion valves (pressure reducers) 22, 32, 42 for cooling and the check valves 23, 33, 43 for forming a heating cycle.
A header H is connected to the indoor heat exchangers 24, 34, 44, and the header H is connected to the suction ports of the compressors 3, 4, 5, 6 via the four-way valve 8 and the accumulator 13.
【００１７】こうして、室外ユニットＡ、分配ユニット
Ｂ、および室内ユニットＣ1 ，Ｃ2，Ｃ3 においてヒー
トポンプ式冷凍サイクルを構成しており、冷房運転時は
図示実線矢印の方向に冷媒を流して冷房サイクルを形成
し、室外熱交換器９を凝縮器、室内熱交換器２４，３
４，４４を蒸発器として機能させる。暖房運転時は、四
方弁８の切換作動により図示破線矢印の方向に冷媒を流
して暖房サイクルを形成し、室内熱交換器２４，３４，
４４を凝縮器、室外熱交換器９を蒸発器として機能させ
る。In this way, the outdoor unit A, the distribution unit B, and the indoor units C 1 , C 2 , C 3 constitute a heat pump type refrigeration cycle, and during the cooling operation, the refrigerant is made to flow in the direction of the solid line arrow in the figure to cool the unit. A cycle is formed, and the outdoor heat exchanger 9 is connected to the condenser and the indoor heat exchangers 24, 3
4,44 function as an evaporator. During the heating operation, the switching operation of the four-way valve 8 causes the refrigerant to flow in the direction of the dashed arrow in the figure to form a heating cycle, and the indoor heat exchangers 24, 34,
44 functions as a condenser, and the outdoor heat exchanger 9 functions as an evaporator.
【００１８】上記流量調整弁２１，３１，４１は、供給
される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る。以下、流量調整弁のことを
ＰＭＶと略称する。The flow rate adjusting valves 21, 31, 41 are pulse motor valves whose opening continuously changes according to the number of drive pulses supplied. Hereinafter, the flow rate adjusting valve is abbreviated as PMV.
【００１９】上記膨張弁２２，３２，４２は、それぞれ
感温筒２２ａ，３２ａ，４２ａを有しており、これら感
温筒の感知温度と弁本体を流れる冷媒の温度との差（室
内熱交換器での冷媒過熱度に相当）に応じて開度が自動
的に変化する。この膨張弁２２，３２，４２の感温筒２
２ａ，３２ａ，４２ａを室内熱交換器２４，３４，４４
とヘッダＨとの間のガス側配管にそれぞれ取付ける。The expansion valves 22, 32, 42 have temperature sensitive tubes 22a, 32a, 42a, respectively. The difference between the temperature sensed by these temperature sensitive tubes and the temperature of the refrigerant flowing through the valve body (indoor heat exchange). The degree of opening automatically changes according to the degree of refrigerant superheat in the vessel. The temperature sensing tube 2 of the expansion valves 22, 32, 42
2a, 32a, 42a to the indoor heat exchangers 24, 34, 44
And the header H on the gas side.
【００２０】室外熱交換器９の複数箇所に温度センサ１
４，１５を取付ける。室外熱交換器９は、たとえば図３
に示すように一対の熱交換器からなり、両熱交換器を図
示しない配管で接続した構成のものである。この両熱交
換器の冷媒流出部に温度センサ１４，１５をそれぞれ取
付けている。制御回路を図２に示す。Temperature sensors 1 are provided at a plurality of locations on the outdoor heat exchanger 9.
Install 4,15. The outdoor heat exchanger 9 is, for example, as shown in FIG.
As shown in (2), it is composed of a pair of heat exchangers, and both heat exchangers are connected by a pipe (not shown). Temperature sensors 14 and 15 are attached to the refrigerant outflow portions of both heat exchangers. The control circuit is shown in FIG.
【００２１】室外ユニットＡは室外制御部５０を備え
る。この室外制御部５０に分配ユニットＢの分配制御部
６０を接続し、その分配制御部６０に室内ユニット
Ｃ1 ，Ｃ2，Ｃ3 のそれぞれ室内制御部７０を接続す
る。The outdoor unit A has an outdoor controller 50. The distribution control unit 60 of the distribution unit B is connected to the outdoor control unit 50, and the indoor control units 70 of the indoor units C 1 , C 2 , C 3 are connected to the distribution control unit 60.
【００２２】室外制御部５０は、マイクロコンピュ―タ
およびその周辺回路からなる。この室外制御部５０に、
四方弁８、インバ―タ５１，５３、スイッチ５２，５
４、および温度センサ１４，１５を接続する。The outdoor controller 50 comprises a microcomputer and its peripheral circuits. In this outdoor control unit 50,
Four-way valve 8, inverters 51, 53, switches 52, 5
4 and the temperature sensors 14 and 15 are connected.
【００２３】インバ―タ５１，５３は、交流電源５７の
電圧を整流し、それを室外制御部５０の指令に応じたス
イッチングにより所定周波数の電圧に変換し、出力す
る。この出力は、圧縮機モ―タ３Ｍ，５Ｍの駆動電力と
なる。スイッチ５２，５４は、たとえばリレー接点であ
る。このスイッチ５２，５４をそれぞれ介して、交流電
源５７に圧縮機モータ４Ｍ，６Ｍを接続する。分配制御
部６０は、マイクロコンピュ―タおよびその周辺回路か
らなる。この分配制御部６０に、ＰＭＶ２１，３１，４
１を接続する。The inverters 51 and 53 rectify the voltage of the AC power supply 57, convert it into a voltage of a predetermined frequency by switching according to a command from the outdoor control unit 50, and output it. This output serves as drive power for the compressor motors 3M and 5M. The switches 52 and 54 are relay contacts, for example. The compressor motors 4M and 6M are connected to the AC power supply 57 through the switches 52 and 54, respectively. The distribution control unit 60 is composed of a microcomputer and its peripheral circuits. PMVs 21, 31, 4 are added to the distribution control unit 60.
Connect 1.
【００２４】室内制御部７０は、マイクロコンピュ―タ
およびその周辺回路からなる。この室内制御部７０に、
リモートコントロール式の操作器（以下、リモコンと略
称する）７１、および室内温度センサ７２を接続する。
室内制御部７０は、次の機能手段を備える。 ［１］リモコン７１の操作に基づく運転開始指令，運転
モード設定指令，および運転停止指令を分配ユニットＢ
に送る手段。The indoor controller 70 comprises a microcomputer and its peripheral circuits. In this indoor control unit 70,
A remote control type operation device (hereinafter, abbreviated as a remote control) 71 and an indoor temperature sensor 72 are connected.
The indoor control unit 70 includes the following functional means. [1] Distributing the operation start command, operation mode setting command, and operation stop command based on the operation of the remote controller 71 to the distribution unit B
Means to send to.
【００２５】［２］室内温度センサ７２の検知温度とリ
モコン７１での設定室内温度との差を空調負荷として求
め、その空調負荷を要求能力としてそのデータを分配ユ
ニットＢに送る手段。分配制御部６０は、次の機能手段
を備える。 ［１］室内ユニットＣ1 ，Ｃ2 ，Ｃ3 の要求能力の総和
を求め、その総要求能力のデータを室外ユニットＡに送
る手段。 ［２］室内ユニットＣ1 ，Ｃ2 ，Ｃ3 の要求能力に応じ
てＰＭＶ２１，３１，４１の開度を制御する手段。室外
制御部５０は、次の機能手段を備える。 ［１］圧縮機３，４，５，６の運転台数および圧縮機
３，５の運転周波数Ｆを要求能力の総和に応じて制御す
る手段。 ［２］暖房時、温度センサ１４，１５の検知温度Ｔｅの
うち低い方に応じて室外熱交換器９に対する除霜運転を
実行する手段。 つぎに、上記の構成において図４のフローチャートを参
照しながら作用を説明する。運転時、圧縮機３，４，
５，６の運転台数および運転周波数を室内ユニット
Ｃ1 ，Ｃ2 ，Ｃ3 の要求能力の総和に応じて複数のパタ
ーンに切換える。[2] A means for obtaining the difference between the temperature detected by the indoor temperature sensor 72 and the indoor temperature set by the remote controller 71 as an air conditioning load, and sending the data to the distribution unit B with the air conditioning load as the required capacity. The distribution control unit 60 includes the following functional means. [1] Means for obtaining the total required capacity of the indoor units C 1 , C 2 , C 3 and sending the data of the total required capacity to the outdoor unit A. [2] Means for controlling the opening degree of the PMVs 21, 31, 41 according to the required capacity of the indoor units C 1 , C 2 , C 3 . The outdoor control unit 50 includes the following functional means. [1] A means for controlling the number of operating compressors 3, 4, 5, 6 and the operating frequency F of the compressors 3, 5 according to the total required capacity. [2] A means for performing a defrosting operation on the outdoor heat exchanger 9 according to the lower one of the detected temperatures Te of the temperature sensors 14 and 15 during heating. Next, the operation of the above configuration will be described with reference to the flowchart of FIG. During operation, the compressor 3,4
The number of operating units 5 and 6 and the operating frequency are switched to a plurality of patterns in accordance with the total required capacity of the indoor units C 1 , C 2 and C 3 .
【００２６】すなわち、要求能力が小さいときは、圧縮
機３の単独の能力可変運転を実行する。要求能力が少し
増すと、圧縮機３，５の能力可変運転を実行する。要求
能力がさらに増すと、圧縮機３，５の能力可変運転およ
び圧縮機４の能力固定運転を実行する。要求能力がさら
に大きくなると、圧縮機３，５の能力可変運転および圧
縮機４，６の能力固定運転を実行する。That is, when the required capacity is small, the independent capacity variable operation of the compressor 3 is executed. When the required capacity increases a little, the capacity variable operation of the compressors 3 and 5 is executed. When the required capacity further increases, variable capacity operation of the compressors 3 and 5 and fixed capacity operation of the compressor 4 are executed. When the required capacity further increases, the variable capacity operation of the compressors 3 and 5 and the fixed capacity operation of the compressors 4 and 6 are executed.
【００２７】暖房運転であれば、温度センサ１４，１５
の検知温度、つまり蒸発器として機能する室外熱交換器
９の温度Ｔｅを監視する。これら検知温度Ｔｅのうち低
い方が設定値以下たとえば−３℃以下になると、タイム
カウントｔを開始する。−３℃以下のままタイムカウン
トｔが設定値たとえば５５分に達すると、室外熱交換器
９に対する除霜運転を開始する。In the heating operation, the temperature sensors 14 and 15
Of the outdoor heat exchanger 9 functioning as an evaporator is monitored. When the lower one of the detected temperatures Te becomes equal to or lower than the set value, for example, −3 ° C. or less, the time count t is started. When the time count t reaches a set value, for example, 55 minutes while keeping the temperature below -3 ° C, the defrosting operation for the outdoor heat exchanger 9 is started.
【００２８】この除霜運転は、四方弁８をニュートラル
状態に復帰させ、圧縮機３，４，５，６から吐出される
高温冷媒を室外熱交換器９に直接的に供給する。この高
温冷媒の供給により、室外熱交換器９に付着した霜が溶
け、除霜がなされる。In this defrosting operation, the four-way valve 8 is returned to the neutral state, and the high temperature refrigerant discharged from the compressors 3, 4, 5, 6 is directly supplied to the outdoor heat exchanger 9. By supplying this high-temperature refrigerant, the frost attached to the outdoor heat exchanger 9 is melted and defrosted.
【００２９】除霜により、温度センサ１４，１５の検知
温度Ｔｅのどちらも設定値たとえば１０℃以上に上昇す
ると、四方弁８を切換えて除霜運転を終了し、暖房運転
に復帰する。When both of the detection temperatures Te of the temperature sensors 14 and 15 rise to a set value, for example, 10 ° C. or more due to defrosting, the four-way valve 8 is switched to end the defrosting operation and return to the heating operation.
【００３０】このように、室外熱交換器９に複数の温度
センサ１４，１５を取付けることにより、たとえ室外熱
交換器９が図３のように２つに分かれた形状であって
も、また室外熱交換器９が大形であっても、それに影響
を受けることなく適切な着霜検知を行なうことができ
る。したがって、着霜があるのになかなか除霜運転に入
らないとか、あるいは除霜が完了しているのにいつまで
も除霜運転が続くなどの不具合を解消することができ、
暖房効率の向上が図れる。As described above, by mounting the plurality of temperature sensors 14 and 15 on the outdoor heat exchanger 9, even if the outdoor heat exchanger 9 is divided into two as shown in FIG. Even if the heat exchanger 9 is large, it is possible to detect frost appropriately without being affected by it. Therefore, it is possible to solve the problem that the defrosting operation does not easily start despite the frost formation, or the defrosting operation continues forever even though the defrosting is completed,
The heating efficiency can be improved.
【００３１】なお、上記実施例では、温度センサ１４，
１５の検知温度Ｔｅのうち低い方に応じて除霜運転を実
行したが、それ以外に、温度センサ１４，１５の検知温
度Ｔｅの平均値を求め、その平均値に応じて除霜運転を
行なう構成としてもよい。つまり、平均値が設定値以下
のまま所定時間が経過すると除霜に入り、平均値が設定
値以上に上昇したところで除霜を終了し、暖房に復帰す
る。また、室外熱交換器９に取付ける温度センサの数お
よび箇所については、室外熱交換器の形状や大きさに応
じて適宜に設定可能である。In the above embodiment, the temperature sensors 14,
Although the defrosting operation is executed according to the lower one of the detected temperatures Te of 15, the average value of the detected temperatures Te of the temperature sensors 14 and 15 is obtained, and the defrosting operation is performed according to the average value. It may be configured. That is, when the average value is equal to or less than the set value and a predetermined time elapses, the defrosting is started, and when the average value rises above the set value, the defrosting is ended and the heating is restored. Further, the number and location of the temperature sensors attached to the outdoor heat exchanger 9 can be appropriately set according to the shape and size of the outdoor heat exchanger.
【００３２】[0032]
【発明の効果】以上述べたようにこの発明によれば、As described above, according to the present invention,
【００３３】請求項１のマルチ式空気調和機は、暖房運
転時、蒸発器として機能する室外熱交換器の複数箇所の
温度を検知し、これら検知温度のうち低い方に応じて室
外熱交換器に対する除霜運転を実行する構成としたの
で、室外熱交換器の容量が大きかったり形状が複雑であ
っても、それに影響を受けることなく室外熱交換器の適
切な除霜を可能として暖房効率の向上が図れる。In the multi-type air conditioner of claim 1, during heating operation, the temperature of the outdoor heat exchanger functioning as an evaporator is detected, and the outdoor heat exchanger is detected according to the lower one of the detected temperatures. Since the defrosting operation for the outdoor heat exchanger is performed, even if the capacity of the outdoor heat exchanger is large or the shape is complicated, it is possible to defrost the outdoor heat exchanger appropriately without being affected by it. Can be improved.
【００３４】請求項２のマルチ式空気調和機は、暖房運
転時、蒸発器として機能する室外熱交換器の複数箇所の
温度を検知し、これら検知温度の平均値に応じて室外熱
交換器に対する除霜運転を実行する構成としたので、室
外熱交換器の容量が大きかったり形状が複雑であって
も、それに影響を受けることなく室外熱交換器の適切な
除霜を可能として暖房効率の向上が図れる。The multi-type air conditioner of claim 2 detects the temperature at a plurality of locations of the outdoor heat exchanger functioning as an evaporator during the heating operation, and the outdoor heat exchanger is detected according to the average value of the detected temperatures. Since the defrosting operation is performed, even if the outdoor heat exchanger has a large capacity or a complicated shape, it is possible to defrost the outdoor heat exchanger appropriately without being affected by it and improve heating efficiency. Can be achieved.
【図１】この発明の一実施例の冷凍サイクルの構成を示
す図。FIG. 1 is a diagram showing a configuration of a refrigeration cycle according to an embodiment of the present invention.
【図２】同実施例の制御回路の構成を示すブロック図。FIG. 2 is a block diagram showing a configuration of a control circuit of the same embodiment.
【図３】同実施例における室外熱交換器および温度セン
サの取付け箇所の例を示す外観斜視図。FIG. 3 is an external perspective view showing an example of mounting locations of an outdoor heat exchanger and a temperature sensor in the same embodiment.
【図４】同実施例の作用を説明するためのフローチャー
ト。FIG. 4 is a flowchart for explaining the operation of the embodiment.
Ａ…室外ユニット、Ｂ…分配ユニット、Ｃ1 ，Ｃ2 ，Ｃ
3 …室内ユニット、３，５…能力可変圧縮機、４，６…
能力固定圧縮機、９…室外熱交換器、１４，１５…温度
センサ、２４，３４，４４…室内熱交換器、５０…室外
制御部、６０…分配制御部、７０…室内制御部。A ... Outdoor unit, B ... Distribution unit, C 1 , C 2 , C
3 ... Indoor unit, 3, 5 ... Variable capacity compressor, 4, 6 ...
Fixed capacity compressor, 9 ... Outdoor heat exchanger, 14, 15 ... Temperature sensor, 24, 34, 44 ... Indoor heat exchanger, 50 ... Outdoor control unit, 60 ... Distribution control unit, 70 ... Indoor control unit.
Claims (2)
続したマルチ式空気調和機において、圧縮機の吐出冷媒
を室内熱交換器、減圧器、室外熱交換器に通して圧縮機
に戻し暖房運転を実行する手段と、前記室外熱交換器の
複数箇所に設けた複数個の温度センサと、これら温度セ
ンサの検知温度のうち低い方に応じて前記室外熱交換器
に対する除霜運転を実行する手段とを備えたことを特徴
とするマルチ式空気調和機。1. In a multi-type air conditioner in which a plurality of indoor units are connected to an outdoor unit, the refrigerant discharged from the compressor is passed through an indoor heat exchanger, a pressure reducer and an outdoor heat exchanger and returned to the compressor for heating operation. Means for executing, a plurality of temperature sensors provided at a plurality of locations of the outdoor heat exchanger, and means for performing a defrosting operation on the outdoor heat exchanger according to the lower one of the detected temperatures of these temperature sensors, A multi-type air conditioner characterized by being equipped with.
続したマルチ式空気調和機において、圧縮機の吐出冷媒
を室内熱交換器、減圧器、室外熱交換器に通して圧縮機
に戻し暖房運転を実行する手段と、前記室外熱交換器の
複数箇所に設けた複数個の温度センサと、これら温度セ
ンサの検知温度の平均値に応じて前記室外熱交換器に対
する除霜運転を実行する手段とを備えたことを特徴とす
るマルチ式空気調和機。2. In a multi-type air conditioner in which a plurality of indoor units are connected to an outdoor unit, the refrigerant discharged from the compressor is passed through an indoor heat exchanger, a pressure reducer and an outdoor heat exchanger and returned to the compressor for heating operation. Means for executing, a plurality of temperature sensors provided at a plurality of locations of the outdoor heat exchanger, and means for performing a defrosting operation on the outdoor heat exchanger according to the average value of the detected temperatures of these temperature sensors. A multi-type air conditioner characterized by being equipped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4184102A JPH0626689A (en) | 1992-07-10 | 1992-07-10 | Multiple type air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4184102A JPH0626689A (en) | 1992-07-10 | 1992-07-10 | Multiple type air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0626689A true JPH0626689A (en) | 1994-02-04 |
Family
ID=16147434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4184102A Pending JPH0626689A (en) | 1992-07-10 | 1992-07-10 | Multiple type air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0626689A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000130895A (en) * | 1998-10-29 | 2000-05-12 | Daikin Ind Ltd | Chiller |
| KR100626424B1 (en) * | 2004-11-23 | 2006-09-20 | 삼성전자주식회사 | Method for control defrosting of multi type air conditioner |
| JP2007232274A (en) * | 2006-03-01 | 2007-09-13 | Matsushita Electric Ind Co Ltd | Air conditioner |
| JP2011158144A (en) * | 2010-01-29 | 2011-08-18 | Daikin Industries Ltd | Refrigeration device |
| WO2016157774A1 (en) * | 2015-03-30 | 2016-10-06 | 株式会社デンソー | Control device and vehicle air conditioner |
| JP2016211832A (en) * | 2015-04-28 | 2016-12-15 | ダイキン工業株式会社 | Use-side unit and freezer |
| WO2019106755A1 (en) | 2017-11-29 | 2019-06-06 | 三菱電機株式会社 | Air conditioner |
-
1992
- 1992-07-10 JP JP4184102A patent/JPH0626689A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000130895A (en) * | 1998-10-29 | 2000-05-12 | Daikin Ind Ltd | Chiller |
| KR100626424B1 (en) * | 2004-11-23 | 2006-09-20 | 삼성전자주식회사 | Method for control defrosting of multi type air conditioner |
| JP2007232274A (en) * | 2006-03-01 | 2007-09-13 | Matsushita Electric Ind Co Ltd | Air conditioner |
| JP2011158144A (en) * | 2010-01-29 | 2011-08-18 | Daikin Industries Ltd | Refrigeration device |
| WO2016157774A1 (en) * | 2015-03-30 | 2016-10-06 | 株式会社デンソー | Control device and vehicle air conditioner |
| JP2016191476A (en) * | 2015-03-30 | 2016-11-10 | 株式会社デンソー | Control device and air conditioner for vehicle |
| JP2016211832A (en) * | 2015-04-28 | 2016-12-15 | ダイキン工業株式会社 | Use-side unit and freezer |
| WO2019106755A1 (en) | 2017-11-29 | 2019-06-06 | 三菱電機株式会社 | Air conditioner |
| US11226149B2 (en) | 2017-11-29 | 2022-01-18 | Mitsubishi Electric Corporation | Air-conditioning apparatus |
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