JPH10132334A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPH10132334A JPH10132334A JP29017196A JP29017196A JPH10132334A JP H10132334 A JPH10132334 A JP H10132334A JP 29017196 A JP29017196 A JP 29017196A JP 29017196 A JP29017196 A JP 29017196A JP H10132334 A JPH10132334 A JP H10132334A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- heat exchanger
- fluid
- outdoor unit
- indoor
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/21—Refrigerant outlet evaporator temperature
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は空調装置に関するも
のであり、特に詳しくは室外機と、これより下方に設置
した複数の室内機との間で、相変化可能な流体を主に比
重差を利用して循環させ、各室内機において冷房可能に
構成した装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly to an air conditioner, in which a phase changeable fluid is mainly separated between an outdoor unit and a plurality of indoor units disposed below the outdoor unit. The present invention relates to a device configured to be circulated using and configured to be able to cool in each indoor unit.
【0002】[0002]
【従来の技術】従来から、相変化可能な流体、すなわち
潜熱を出し入れすることによって液体と気体との間で状
態が変化する流体の搬送動力を必要としない空調装置と
して、例えば図3に示されるような装置があるが、この
装置は凝縮器として機能する室外機1を建物の高所位置
に設置し、この室外機1と、これより低い位置にある被
空調室に設置の室内機4の熱交換器5との間を液体搬送
管6と気体搬送管7とで連結し、室外機1で放熱・凝縮
した液体をその自重によって室内機4の熱交換器5に液
体搬送管6を介して供給する一方、室内機4の熱交換器
5で温度の高い室内空気と熱交換して吸熱・蒸発した気
体を、流体が凝縮して低圧となっている室外機1に気体
搬送管7を介して還流させることで循環を可能とするも
のであから、電動ポンプなどの搬送動力が不要となり、
ランニングコストが抑制できると云った利点がある。な
お、8は流量調整弁である。2. Description of the Related Art Conventionally, an air conditioner which does not require a power for conveying a phase-changeable fluid, that is, a fluid whose state changes between a liquid and a gas by taking in and out latent heat, is shown in FIG. 3, for example. There is such a device. In this device, an outdoor unit 1 functioning as a condenser is installed at a high position in a building, and the outdoor unit 1 and an indoor unit 4 installed in a room to be air-conditioned at a lower position are installed. The liquid exchanger 6 is connected to the heat exchanger 5 by a liquid transport pipe 6 and a gas transport pipe 7, and the liquid radiated and condensed by the outdoor unit 1 is transferred to the heat exchanger 5 of the indoor unit 4 via the liquid transport pipe 6 by its own weight. On the other hand, the heat exchanger 5 of the indoor unit 4 exchanges heat with the high-temperature indoor air to absorb and evaporate the gas, and the gas transfer pipe 7 is connected to the outdoor unit 1 where the fluid is condensed to a low pressure. Circulates by allowing it to recirculate through Transport power, such as a pump is not required,
There is an advantage that running costs can be suppressed. Reference numeral 8 denotes a flow control valve.
【0003】[0003]
【発明が解決しようとする課題】しかし、この種の空調
装置にあっては、室外機で放熱して凝縮し液体搬送管に
溜った流体の重量だけが、室内機に前記流体を供給する
動力して作用しているので、前記流体が室内機に流入す
る速度に限界があり、冷房負荷が大きい場合には室内機
において前記流体は過熱状態になり、冷房作用が不足し
勝ちであると云った問題点があり、この点の解決が課題
となっていた。However, in this type of air conditioner, only the weight of the fluid that radiates heat in the outdoor unit and condenses and accumulates in the liquid transfer pipe is the power for supplying the fluid to the indoor unit. Therefore, there is a limit to the speed at which the fluid flows into the indoor unit, and when the cooling load is large, the fluid is overheated in the indoor unit, and the cooling operation tends to be insufficient. There was a problem, and the solution of this point was an issue.
【0004】[0004]
【課題を解決するための手段】本発明は上記従来技術の
課題を解決するため、室外機と、これより下方に設置し
た複数の室内機との間で、相変化可能な流体を液相と気
相との主に比重差を利用して循環させ、各室内機におい
て冷房可能に構成した装置であって、冷房運転時に室内
機から蒸発して吐出する前記流体の温度が所定時間に渡
って所定温度より高いとき、室外機から凝縮して吐出す
る前記流体の設定吐出温度を下げる制御手段を室外機に
設けるようにした空調装置を提供するものである。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the prior art, the present invention converts a phase-changeable fluid into a liquid phase between an outdoor unit and a plurality of indoor units installed below the outdoor unit. A device configured to circulate mainly by utilizing a specific gravity difference from a gas phase and to be capable of cooling in each indoor unit, wherein the temperature of the fluid that evaporates and is discharged from the indoor unit during a cooling operation over a predetermined time period An object of the present invention is to provide an air conditioner in which a control means for reducing a set discharge temperature of the fluid condensed and discharged from the outdoor unit when the temperature is higher than a predetermined temperature is provided in the outdoor unit.
【0005】[0005]
【発明の実施の形態】以下、本発明の実施形態につい
て、図1・図2を参照して説明する。なお、理解を容易
にするため、これらの図においても前記図3において説
明した部分と同様の機能を有する部分には、同一の符号
を付した。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In addition, in order to facilitate understanding, in these figures, parts having the same functions as those described in FIG. 3 are denoted by the same reference numerals.
【0006】図1は、本発明になる空調装置の一構成例
を示したものであり、1は冷熱を発生させることができ
る、例えば吸収式冷凍機などからなる室外機であり、建
物の例えば屋上にある機械室などに設置され、例えば蒸
発器の内部に配管した熱交換器2を介して、閉回路3に
封入した相変化が可能な流体、例えば低温度でも圧力が
低下すると容易に蒸発し得る、R−134aと熱の授受
を行う。FIG. 1 shows an example of the configuration of an air conditioner according to the present invention. Reference numeral 1 denotes an outdoor unit that can generate cold heat, for example, an absorption refrigerator. Installed in a machine room or the like on the rooftop, for example, through a heat exchanger 2 piped inside an evaporator, a phase-changeable fluid sealed in a closed circuit 3, for example, easily evaporates when the pressure drops even at a low temperature. And heat transfer with R-134a.
【0007】5は、建物の各部屋に設置した室内機4の
熱交換器であり、室外機1と複数の室内機4の熱交換器
5とは、図のように液体供給管6・気体還流管7及び流
量調整弁8によって配管・接続されて、前記閉回路3を
形成している。Reference numeral 5 denotes a heat exchanger of the indoor unit 4 installed in each room of the building. The outdoor unit 1 and the heat exchangers 5 of the plurality of indoor units 4 are connected to the liquid supply pipe 6 and the gas The closed circuit 3 is formed by piping and connection by a reflux pipe 7 and a flow control valve 8.
【0008】なお、9は、室内空気を熱交換器5に吹き
付けて室内に還流させるための送風機、10と11はR
−134aの温度を検出するために熱交換器5のR−1
34aの出入口に設けた温度センサであり、空調負荷が
大きいほど入口側の温度センサ10と出口側の温度セン
サ11との温度差が大きくなり、空調負荷が小さいほど
前記温度差は小さくなる。Reference numeral 9 denotes a blower for blowing indoor air to the heat exchanger 5 to recirculate the indoor air, and 10 and 11 denote R.
R-1 of the heat exchanger 5 for detecting the temperature of -134a
The temperature difference between the temperature sensor 10 on the inlet side and the temperature sensor 11 on the outlet side increases as the air conditioning load increases, and the temperature difference decreases as the air conditioning load decreases.
【0009】また、この室外機1には室外制御装置12
を、室内機4には室内制御装置13を設けてある。そし
て、室内制御装置13には、流量調整弁8の現開度およ
び温度センサ10・11が検出した温度情報を通信信号
に変換可能であると共に、外部から受信した通信信号を
所要の制御信号に変換することのできる信号変換器(図
示せず)を内蔵して、室外制御装置12と室内制御装置
13とを通信線14によって接続し、室外制御装置12
が出力する制御信号を室内制御装置13が受けて流量調
整弁8の開度が制御されるように構成してある。また、
室内制御装置13と通信可能で、冷房の起動/停止、送
風の強弱選択、温度設定などが行えるリモコン15を各
室内機4に対応して設置してある。The outdoor unit 1 has an outdoor controller 12.
The indoor unit 4 is provided with an indoor control device 13. The indoor control device 13 can convert the current opening degree of the flow control valve 8 and the temperature information detected by the temperature sensors 10 and 11 into a communication signal, and convert the communication signal received from the outside into a required control signal. A signal converter (not shown) capable of conversion is built in, and the outdoor control device 12 and the indoor control device 13 are connected by a communication line 14.
The control signal output by the controller is received by the indoor control device 13 so that the opening of the flow control valve 8 is controlled. Also,
A remote controller 15 communicable with the indoor control device 13 and capable of starting / stopping cooling, selecting the intensity of ventilation, setting a temperature, and the like is provided for each indoor unit 4.
【0010】先ず、閉回路3に封入したR−134aの
循環サイクルを説明する。室外機1で発生した冷熱によ
ってR−134aは熱交換器2の管壁を介して冷却され
るので、R−134aは凝縮して下流側の液体供給管6
に溜り、室内機4の流量調整弁8を介して各熱交換器5
に供給される。First, the circulation cycle of R-134a enclosed in the closed circuit 3 will be described. Since the R-134a is cooled via the tube wall of the heat exchanger 2 by the cold generated in the outdoor unit 1, the R-134a is condensed and the liquid supply pipe 6 on the downstream side is condensed.
In each heat exchanger 5 through the flow control valve 8 of the indoor unit 4.
Supplied to
【0011】一方、各熱交換器5においては、送風機9
によって温度の高い室内空気が強制的に供給されている
ので、R−134aは室内空気から熱を奪って蒸発し、
冷房作用を行なう。On the other hand, in each heat exchanger 5, a blower 9
R-134a evaporates by taking heat from the room air because the room air having a high temperature is forcibly supplied by
Performs a cooling action.
【0012】そして、R−134aが冷却されて凝縮・
液化し、低圧になっている室外機1の熱交換器2に気体
還流管7を通って還流すると云った循環が自然に起こ
る。Then, R-134a is cooled and condensed.
Circulation naturally occurs, such as reflux through the gas reflux pipe 7 to the heat exchanger 2 of the outdoor unit 1 which is liquefied and has a low pressure.
【0013】しかし、低い階に設置された室内機4の熱
交換器5には、室外機1の熱交換器2で放熱して凝縮し
液体搬送管6に溜ったR−134aの全重量が流入圧力
として作用するためR−134aが供給され易いが、高
い階に設置された室内機4の熱交換器5には、この部分
より上の液体搬送管6に溜ったR−134aの重量のみ
が流入圧力として作用するので、高い階に設置された室
内機4の熱交換器5ほどR−134aは供給され難く、
冷房作用が不足する傾向にある。However, in the heat exchanger 5 of the indoor unit 4 installed on the lower floor, the total weight of the R-134a radiated and condensed by the heat exchanger 2 of the outdoor unit 1 and accumulated in the liquid transfer pipe 6 is stored. R-134a is likely to be supplied because it acts as an inflow pressure, but the heat exchanger 5 of the indoor unit 4 installed on the higher floor has only the weight of R-134a accumulated in the liquid transfer pipe 6 above this part. Acts as the inflow pressure, so that the heat exchanger 5 of the indoor unit 4 installed on the higher floor is less likely to be supplied with R-134a,
The cooling effect tends to be insufficient.
【0014】したがって、温度センサ10・11が検出
した温度情報が同じであるからと云って、流量調整弁8
に同じ制御信号を出力してその開度制御を行ったので
は、冷房負荷に応じた適量のR−134aが供給できな
いので、室外制御装置12には室内機4が設置されてい
る階によって異なった制御信号、すなわち上の階に設置
されている室内機4ほど流量調整弁8の開度を大きく開
ける所定の制御プログラム、例えば室内機4を10の階
に分けて設置した空調装置の場合には、例えば一番低い
階に設置した室内機4の補正係数を1とし、1階上がる
毎に1に0.1を加えた数値をその階の補正係数とし、
温度センサ10・11が検出した温度情報に基づいて先
ず一般式により無補正時の流量調整弁8の開度を求め、
さらにこの開度に所要の補正係数を積算して室内機4に
実際に出力する流量調整弁8の開度を求め、このように
して求めた開度に室内機4の流量調整弁8の開度を調整
するように構成してある。Therefore, the fact that the temperature information detected by the temperature sensors 10 and 11 is the same means that the flow rate adjusting valve 8
If the same control signal is output and the opening degree is controlled, an appropriate amount of R-134a corresponding to the cooling load cannot be supplied, so the outdoor control device 12 differs depending on the floor where the indoor unit 4 is installed. Control signal, that is, a predetermined control program for opening the flow control valve 8 more widely as the indoor unit 4 is installed on the upper floor, for example, in the case of an air conditioner in which the indoor unit 4 is divided into ten floors and installed. Is, for example, the correction coefficient of the indoor unit 4 installed on the lowest floor is 1, and a value obtained by adding 0.1 to 1 each time the floor rises is set as the correction coefficient of that floor,
First, based on the temperature information detected by the temperature sensors 10 and 11, the opening of the flow control valve 8 at the time of no correction is obtained by a general formula,
Further, a required correction coefficient is added to the opening to determine the opening of the flow control valve 8 that is actually output to the indoor unit 4. It is configured to adjust the degree.
【0015】このため、室外制御装置12は、温度セン
サ10・11が検出した温度情報を通信回線14を介し
て室内制御装置13から受け取ると、それが何階に設置
された室内機4から送信された信号であるかを先ず確認
してその補正係数を求め、このようにして求めた補正係
数を考慮して流量調整弁8の開度を所定のプログラムに
より算出し、所要の制御信号を通信回線14を介して該
当する室内制御装置13に出力し、設置階に応じた開度
に流量調整弁8の開度を調整するので、各室内機4にお
いてそれぞれ空調負荷に見合った空調が行われる。For this reason, when the outdoor controller 12 receives the temperature information detected by the temperature sensors 10 and 11 from the indoor controller 13 via the communication line 14, the outdoor controller 12 transmits the temperature information from the indoor unit 4 on which floor. First, it is checked whether the signal is a corrected signal, the correction coefficient is obtained, the opening degree of the flow control valve 8 is calculated by a predetermined program in consideration of the correction coefficient thus obtained, and a required control signal is transmitted. The output is output to the corresponding indoor control device 13 via the line 14, and the opening of the flow control valve 8 is adjusted to the opening corresponding to the installation floor, so that each indoor unit 4 performs air conditioning corresponding to the air conditioning load. .
【0016】そして、ある任意の室内機4における空調
負荷が特別に大きく、当該熱交換器5から蒸発して吐出
するR−134aの温度が所定時間、例えば5分間に渡
って所定温度、例えば12℃より高い過熱状態を示し、
温度センサ10・11が検出した温度情報に基づいて制
御した流量調整弁8の開度が既に100%となり、これ
以上弁を開けることができなくなっているときには、室
外機1の熱交換器2から凝縮して吐出するR−134a
の温度、すなわち熱交換器2のR−134aの液体出口
部に設けた温度センサ16が、例えば7℃を示すように
室外機1を制御していた場合には、温度センサ16が例
えば5℃を示すように室外機1を構成してある。The air-conditioning load of an arbitrary indoor unit 4 is particularly large, and the temperature of R-134a evaporated and discharged from the heat exchanger 5 is maintained at a predetermined temperature, for example, 12 minutes, for 5 minutes. Indicates an overheat condition higher than ℃
When the opening degree of the flow control valve 8 controlled based on the temperature information detected by the temperature sensors 10 and 11 has already become 100% and the valve cannot be opened any more, the heat exchanger 2 of the outdoor unit 1 R-134a that condenses and discharges
In other words, when the temperature sensor 16 provided at the liquid outlet of the R-134a of the heat exchanger 2 controls the outdoor unit 1 to indicate, for example, 7 ° C., The outdoor unit 1 is configured as shown in FIG.
【0017】具体的には、室外機1が例えば吸収式冷凍
機からなり、熱交換器2を蒸発器の内部に設置した場合
には、室外制御装置12が出力する制御信号に基づい
て、吸収式冷凍機の再生器に投入する熱量を増やして冷
媒の循環量を増加させ、蒸発器において蒸発する冷媒の
量を増加させることで、熱交換器2で冷却されて凝縮し
室外機1から吐出するR−134aの温度を所定温度だ
け低下させる。More specifically, when the outdoor unit 1 is formed of, for example, an absorption refrigerator and the heat exchanger 2 is installed inside the evaporator, the outdoor unit 1 is controlled based on a control signal output from the outdoor control unit 12. The amount of heat input to the regenerator of the type refrigerator is increased to increase the amount of refrigerant circulated, and the amount of refrigerant evaporated in the evaporator is increased. The temperature of the R-134a is lowered by a predetermined temperature.
【0018】なお、本発明の空調装置は、図1に破線で
示したように、レシーバタンク17と電動ポンプ18と
を設置した構成とすることも可能である。Note that the air conditioner of the present invention may have a configuration in which a receiver tank 17 and an electric pump 18 are installed as shown by a broken line in FIG.
【0019】このように構成すると、R−134aの液
体と気体の比重差に加えて電動ポンプ18による搬送力
が加算されるので、R−134aは室内機4の熱交換器
5に供給され易く、したがってR−134aは熱交換器
5において過熱状態になり難く、また、流量調整弁8の
開度を決定する際の補正係数が小さくできるし、全体に
容量の小さい流量調整弁8を用いて空調装置を構成する
ことができる。また、室内機4の一部を室外機1と同じ
フロアに設置することも可能になる。With this configuration, the transport force of the electric pump 18 is added to the difference in specific gravity between the liquid and the gas of the R-134a, so that the R-134a is easily supplied to the heat exchanger 5 of the indoor unit 4. Therefore, the R-134a is unlikely to be overheated in the heat exchanger 5, and the correction coefficient for determining the opening degree of the flow control valve 8 can be reduced, and the flow control valve 8 having a small capacity as a whole can be used. An air conditioner can be configured. In addition, a part of the indoor unit 4 can be installed on the same floor as the outdoor unit 1.
【0020】また、冷暖切替弁(開閉弁)19・レシー
バタンク20・暖房用電動ポンプ21を図2に示したよ
うに配管接続し、室外機1で冷熱を発生しながら冷暖切
替弁19を開弁したときには上記説明と同じR−134
aの循環が起こって冷房運転が行え、室外機1で温熱を
発生しながら冷暖切替弁19を閉弁し、暖房用電動ポン
プ21を運転したときには、室外機1で発生した温熱に
よって閉回路3のR−134aが熱交換器2の管壁を介
して加熱されて蒸発し、気体還流管7を介して各室内機
4の熱交換器5に供給され、各熱交換器5においては、
送風機9によって強制的に供給された温度の低い室内空
気にR−134aが放熱して凝縮・液化し、この凝縮・
液化時に暖房作用を行ない、さらに、凝縮したR−13
4aの液体が流量調整弁8を通ってレシーバタンク20
に入り、暖房用電動ポンプ21の搬送力によって室外機
1の熱交換器2に還流するR−134a循環が可能に構
成して、冷/暖房が可能な空調装置とすることも可能で
ある。A cooling / heating switching valve (opening / closing valve) 19, a receiver tank 20, and a heating electric pump 21 are connected as shown in FIG. 2 to open and close the cooling / heating switching valve 19 while generating cold heat in the outdoor unit 1. When valved, the same R-134 as described above
a, the cooling operation can be performed, and the cooling / heating switching valve 19 is closed while generating heat in the outdoor unit 1, and when the heating electric pump 21 is operated, the closed circuit 3 is generated by the heat generated in the outdoor unit 1. R-134a is heated and evaporated through the tube wall of the heat exchanger 2 and supplied to the heat exchangers 5 of the indoor units 4 via the gas recirculation pipes 7.
R-134a radiates heat to the low-temperature room air forcibly supplied by the blower 9 and condenses and liquefies.
It performs heating action during liquefaction, and furthermore, condensed R-13
4a passes through the flow control valve 8 and passes through the receiver tank 20.
It is also possible to configure an air conditioner capable of cooling / heating by making it possible to circulate the R-134a, which is returned to the heat exchanger 2 of the outdoor unit 1 by the transfer force of the electric heating pump 21.
【0021】なお、蒸発器に配管した熱交換器2から冷
熱を供給したり、温熱を供給することができる吸収式冷
凍機としては、例えば特開平7−318189号公報な
どに開示されたものが使用できる。As an absorption refrigerator capable of supplying cold or warm heat from the heat exchanger 2 connected to the evaporator, for example, one disclosed in Japanese Patent Application Laid-Open No. 7-318189 is disclosed. Can be used.
【0022】また、上記のように室外機1に、冷熱と温
熱が選択的に供給できる吸収冷温水機などを使用した空
調装置においては、暖房運転時にある任意の室内機4に
おける暖房負荷が特別に大きく、当該熱交換器5で凝縮
して吐出するR−134aの温度が所定時間、例えば5
分間に渡って所定温度、例えば10℃より低い過冷却状
態を示し、温度センサ10・11が検出した温度情報に
基づいて制御した流量調整弁8の開度が既に100%に
なり、これ以上弁を開けることができなくなっていると
きには、室外機1の熱交換器2から蒸発して吐出するR
−134aの温度、すなわち熱交換器2のR−134a
の気体出口部に設けた温度センサ16aが、例えば50
℃を示すように室外機1を制御していた場合には、温度
センサ16aが例えば55℃を示すように室外機1を構
成しても良い。In an air conditioner using an absorption chiller / heater capable of selectively supplying cold and hot heat to the outdoor unit 1 as described above, a heating load in an arbitrary indoor unit 4 during a heating operation is special. The temperature of the R-134a condensed and discharged in the heat exchanger 5 is increased for a predetermined time, for example, 5
A supercooled state lower than a predetermined temperature, for example, 10 ° C., is displayed over a period of one minute, and the opening degree of the flow control valve 8 controlled based on the temperature information detected by the temperature sensors 10 and 11 has already reached 100%. When it is no longer possible to open the R, the R that evaporates and is discharged from the heat exchanger 2 of the outdoor unit 1
-134a temperature, that is, R-134a of heat exchanger 2
Temperature sensor 16a provided at the gas outlet of
In the case where the outdoor unit 1 is controlled so as to indicate ° C, the outdoor unit 1 may be configured so that the temperature sensor 16a indicates, for example, 55 ° C.
【0023】具体的には、室外制御装置12が出力する
制御信号に基づいて、室外機1を構成している吸収式冷
凍機の再生器に投入する熱量を増やして冷媒の循環量を
増加させ、凝縮する冷媒の量を増加させることで、熱交
換器2で加熱されて蒸発し室外機1から吐出するR−1
34aの温度を所定温度上昇させることができる。More specifically, based on a control signal output from the outdoor controller 12, the amount of heat input to the regenerator of the absorption refrigerator constituting the outdoor unit 1 is increased to increase the circulation amount of the refrigerant. By increasing the amount of refrigerant to be condensed, R-1 which is heated and evaporated by the heat exchanger 2 and discharged from the outdoor unit 1
The temperature of 34a can be raised by a predetermined temperature.
【0024】また、温度センサ10・11は、熱交換器
5に吹き付ける室内空気の温度変化が検出できるように
設置したり、温度センサ10・11に代えて、熱交換器
5の出入口部におけるR−134aの圧力差が検出でき
るように圧力センサを設置して、室外制御装置12に空
調負荷として出力するように構成したり、温度センサ1
6・16aの代わりにR−134aの出口側圧力が検出
できるように圧力センサを設置し、冷房運転時に温度セ
ンサ10がR−134aの過熱状態を示したときには、
温度センサ16の代わりに設置した圧力センサが出力す
る圧力が所定の圧力に下がり、暖房運転時に温度センサ
10がR−134aの過冷却状態を示したときには、温
度センサ16aの代わりに設置した圧力センサが出力す
る圧力が所定の圧力に上がるように、室外機1を構成す
ることもできる。The temperature sensors 10 and 11 are installed so as to detect a change in the temperature of the room air blown to the heat exchanger 5, and the temperature sensors 10 and 11 are replaced with the R at the entrance and exit of the heat exchanger 5. A pressure sensor is installed so that the pressure difference of −134a can be detected, and the pressure sensor is output to the outdoor control device 12 as an air conditioning load.
When a pressure sensor is installed so that the outlet pressure of R-134a can be detected instead of 6.16a, and the temperature sensor 10 indicates the overheated state of R-134a during the cooling operation,
When the pressure output from the pressure sensor installed in place of the temperature sensor 16 decreases to a predetermined pressure and the temperature sensor 10 indicates the supercooled state of R-134a during the heating operation, the pressure sensor installed in place of the temperature sensor 16a The outdoor unit 1 may be configured so that the pressure output from the outdoor unit rises to a predetermined pressure.
【0025】また、閉回路3に封入する相変化可能な流
体としては、R−134aの他にも、R−407c、R
−404A、R−410cなど、潜熱による熱移動が可
能なものであっても良い。The phase-changeable fluid sealed in the closed circuit 3 includes R-407a, R-407c and R-134a in addition to R-134a.
-404A, R-410c, etc., which can transfer heat by latent heat may be used.
【0026】[0026]
【発明の効果】以上説明したように、本発明の空調装置
は、冷房運転時に室内機から蒸発して吐出する前記流体
の温度が所定時間に渡って所定温度より高いとき、室外
機から凝縮して吐出する前記流体の設定吐出温度を下げ
るようにしたものであるので、室内機において前記流体
が過熱状態となって冷房作用が不足しても、所定時間後
には前記流体の過熱状態が解消されて正常な冷房運転に
復帰する。As described above, the air conditioner of the present invention condenses from the outdoor unit when the temperature of the fluid evaporated and discharged from the indoor unit during the cooling operation is higher than the predetermined temperature for a predetermined time. Even if the fluid is overheated in the indoor unit and the cooling operation is insufficient, the overheated state of the fluid is eliminated after a predetermined time because the set discharge temperature of the fluid to be discharged is lowered. To return to normal cooling operation.
【0027】また、実施形態で示したようにガスや油を
燃焼して冷熱や温熱を発生することができる吸収式冷温
水機を室外機として使用した空調装置においては、冷房
時の電力としては制御関係に消費される電力を除いて使
用されないので、発電量が年間を通して最大となる盛夏
時の電力ピークカットに効果がある。Further, as shown in the embodiment, in an air conditioner using an absorption type chiller / heater capable of burning gas or oil to generate cold or warm heat as an outdoor unit, electric power for cooling is not used. Since the power is not used except for the power consumed for control, it is effective in the peak power cut at the time of midsummer when the amount of power generation becomes maximum throughout the year.
【図1】一実施形態の説明図である。FIG. 1 is an explanatory diagram of one embodiment.
【図2】冷/暖房が可能に構成した実施形態の説明図で
ある。FIG. 2 is an explanatory diagram of an embodiment configured to enable cooling / heating.
【図3】従来技術の説明図である。FIG. 3 is an explanatory diagram of a conventional technique.
1 室外機 2 熱交換器 3 閉回路 4 室内機 5 熱交換器 6 液体供給管 7 気体供給管 8 流量調整弁 9 送風機 10・11 温度センサ 12 室外制御装置 13 室内制御装置 14 通信線 15 リモコン 16・16a 温度センサ 17 レシーバタンク 18 電動ポンプ 19 冷暖切替弁 20 レシーバタンク 21 暖房用電動ポンプ REFERENCE SIGNS LIST 1 outdoor unit 2 heat exchanger 3 closed circuit 4 indoor unit 5 heat exchanger 6 liquid supply pipe 7 gas supply pipe 8 flow control valve 9 blower 10.11 temperature sensor 12 outdoor control device 13 indoor control device 14 communication line 15 remote control 16・ 16a Temperature sensor 17 Receiver tank 18 Electric pump 19 Cooling / heating switching valve 20 Receiver tank 21 Electric pump for heating
Claims (1)
の室内機との間で、相変化可能な流体を液相と気相との
主に比重差を利用して循環させ、各室内機において冷房
可能に構成した装置であって、冷房運転時に室内機から
蒸発して吐出する前記流体の温度が所定時間に渡って所
定温度より高いとき、室外機から凝縮して吐出する前記
流体の設定吐出温度を下げる制御手段を室外機に設けた
ことを特徴とする空調装置。1. A phase changeable fluid is circulated between an outdoor unit and a plurality of indoor units installed below the indoor unit by mainly utilizing a difference in specific gravity between a liquid phase and a gas phase. An apparatus configured to be capable of cooling in the machine, wherein when the temperature of the fluid evaporated and discharged from the indoor unit during the cooling operation is higher than a predetermined temperature for a predetermined time, the fluid condensed and discharged from the outdoor unit is discharged. An air conditioner wherein a control means for lowering a set discharge temperature is provided in an outdoor unit.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29017196A JPH10132334A (en) | 1996-10-31 | 1996-10-31 | Air conditioner |
US08/961,311 US5907956A (en) | 1996-10-31 | 1997-10-30 | Air conditioning system |
KR1019970056934A KR100502234B1 (en) | 1996-10-31 | 1997-10-31 | Air conditioning system |
CNB971264228A CN1144978C (en) | 1996-10-31 | 1997-10-31 | Air conditioning system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29017196A JPH10132334A (en) | 1996-10-31 | 1996-10-31 | Air conditioner |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH10132334A true JPH10132334A (en) | 1998-05-22 |
Family
ID=17752676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP29017196A Pending JPH10132334A (en) | 1996-10-31 | 1996-10-31 | Air conditioner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH10132334A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023279850A1 (en) * | 2021-07-09 | 2023-01-12 | 青岛海尔空调器有限总公司 | Control method for air conditioner, and air conditioner, storage medium and program product |
-
1996
- 1996-10-31 JP JP29017196A patent/JPH10132334A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023279850A1 (en) * | 2021-07-09 | 2023-01-12 | 青岛海尔空调器有限总公司 | Control method for air conditioner, and air conditioner, storage medium and program product |
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