JPH04344072A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPH04344072A JPH04344072A JP3142670A JP14267091A JPH04344072A JP H04344072 A JPH04344072 A JP H04344072A JP 3142670 A JP3142670 A JP 3142670A JP 14267091 A JP14267091 A JP 14267091A JP H04344072 A JPH04344072 A JP H04344072A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- discharge temperature
- temperature
- accumulator
- 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.)
- Granted
Links
- 239000003507 refrigerant Substances 0.000 claims abstract description 92
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 238000002347 injection Methods 0.000 claims abstract description 17
- 239000007924 injection Substances 0.000 claims abstract description 17
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、空気調和装置に関する
。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner.
【０００２】0002
【従来の技術】空気調和装置は、冷媒圧縮機、室外熱交
換器、室内熱交換器、及び減圧装置などより構成され、
これらの構成要素を冷媒配管で順次連結して冷媒回路を
形成している。[Prior Art] An air conditioner is composed of a refrigerant compressor, an outdoor heat exchanger, an indoor heat exchanger, a pressure reducing device, etc.
These components are sequentially connected through refrigerant piping to form a refrigerant circuit.
【０００３】ここで冷媒圧縮機は、モータで駆動される
電気駆動式のものもあれば、ガスエンジン等で駆動され
るエンジン駆動式のものもある。[0003] Some refrigerant compressors are electrically driven type driven by a motor, and others are engine driven type driven by a gas engine or the like.
【０００４】エンジン駆動式の冷媒圧縮機を使用した空
気調和装置としては、例えば特開昭５８−１３０９７３
号公報に示されたようなものがある。[0004] For example, an air conditioner using an engine-driven refrigerant compressor is disclosed in Japanese Patent Application Laid-open No. 58-130973.
There is something like the one shown in the publication.
【０００５】今、図３に四方弁を使って、冷媒の流通方
向を逆にし、室内の冷房と暖房とが行えるヒートポンプ
装置に係る従来の冷媒回路を示す。FIG. 3 shows a conventional refrigerant circuit related to a heat pump device that uses a four-way valve to reverse the flow direction of refrigerant and perform indoor cooling and heating.
【０００６】同図において、１は冷媒圧縮機にして、ガ
スエンジン（図示せず）などにて駆動される。２はこの
冷媒圧縮機１の吸入側の冷媒管３に設けられたアキュム
レータ、４は冷媒の流路を冷房・暖房に応じて変える四
方弁、５は暖房運転時に減圧器として働く膨張弁、６は
暖房運転時に凝縮器として働き、冷房運転時に蒸発器と
して働く室内熱交換器、７は暖房運転時に凝縮器として
働き、冷房運転時に蒸発器として働く室内熱交換器であ
る。また８は室内ユニットＡの室内熱交換器６付近の管
路９に取り付けられている電動弁で、この電動弁は冷房
運転時に減圧装置として働く。In the figure, reference numeral 1 denotes a refrigerant compressor, which is driven by a gas engine (not shown) or the like. 2 is an accumulator installed in the refrigerant pipe 3 on the suction side of the refrigerant compressor 1; 4 is a four-way valve that changes the flow path of the refrigerant according to cooling or heating; 5 is an expansion valve that functions as a pressure reducer during heating operation; 7 is an indoor heat exchanger that functions as a condenser during heating operation and as an evaporator during cooling operation, and 7 represents an indoor heat exchanger that functions as a condenser during heating operation and as an evaporator during cooling operation. Further, reference numeral 8 denotes a motor-operated valve attached to the pipe line 9 near the indoor heat exchanger 6 of the indoor unit A, and this motor-operated valve functions as a pressure reducing device during cooling operation.
【０００７】前記冷媒圧縮機１，四方弁４，室内熱交換
器７，膨張弁５，電動弁８，室内熱交換器６等の主要構
成要素が順次冷媒配管１０で連結されてヒートポンプ回
路１１が構成されている。１２は前記膨張弁５の開度を
制御するために設けられた感温部、１３は逆止弁である
。そして、この逆止弁１３と室内熱交換器６との間の管
路にはレシーバタンク１４が配設されている。１５はス
トレーナーである。The main components such as the refrigerant compressor 1, four-way valve 4, indoor heat exchanger 7, expansion valve 5, electric valve 8, indoor heat exchanger 6, etc. are sequentially connected by refrigerant piping 10 to form a heat pump circuit 11. It is configured. 12 is a temperature sensing portion provided to control the opening degree of the expansion valve 5, and 13 is a check valve. A receiver tank 14 is disposed in a conduit between the check valve 13 and the indoor heat exchanger 6. 15 is a strainer.
【０００８】ところで、冷房運転時に、室内熱交換器６
より出た冷媒が四方弁４を介してアキュムレータ２に戻
る経路をバイパスするように、レシーバタンク１４から
アキュムレータ２に冷媒を戻すリキッドインジェクショ
ン回路１８が設けられている。By the way, during cooling operation, the indoor heat exchanger 6
A liquid injection circuit 18 is provided for returning the refrigerant from the receiver tank 14 to the accumulator 2 so that the refrigerant discharged from the receiver tank 14 bypasses the path returning to the accumulator 2 via the four-way valve 4.
【０００９】上記の冷媒回路となっており、冷媒の流れ
としては、冷房時は、冷媒圧縮機１を出た冷媒は、実線
矢印に示すように、四方弁４−室外熱交換器７−レシー
バタンク１４−室内熱交換器６−四方弁４−アキュムレ
ータ２を通り冷媒圧縮機１に戻る。又、暖房時には、冷
媒は点線矢印に示すように逆の流れとなる。The refrigerant circuit is as described above, and during cooling, the refrigerant exiting the refrigerant compressor 1 flows through the four-way valve 4 - the outdoor heat exchanger 7 - the receiver, as shown by the solid arrow. It passes through the tank 14 - indoor heat exchanger 6 - four-way valve 4 - accumulator 2 and returns to the refrigerant compressor 1 . Furthermore, during heating, the refrigerant flows in the opposite direction as shown by the dotted arrow.
【００１０】ところで、上述したリキッドインジェクシ
ョン回路１８の作用は、冷媒圧縮機１から吐出する冷媒
の温度が高過ぎる場合に、冷媒をアキュムレータ２に送
り込んで膨張させ、冷媒圧縮機１に流入する冷媒の温度
を低下させて、冷媒の吐出温度を下げるものである。こ
れは冷媒の吐出温度が高いと、冷媒圧縮機１自身も温度
上昇し、運転に支障を生じる。By the way, the action of the liquid injection circuit 18 described above is that when the temperature of the refrigerant discharged from the refrigerant compressor 1 is too high, the refrigerant is sent to the accumulator 2 and expanded, and the refrigerant flowing into the refrigerant compressor 1 is It lowers the temperature and lowers the discharge temperature of the refrigerant. This is because when the discharge temperature of the refrigerant is high, the temperature of the refrigerant compressor 1 itself also rises, causing problems in operation.
【００１１】その支障は例えば、エンジン駆動式の冷媒
圧縮機であると、冷媒圧縮機潤滑用のオイルの温度上昇
で、オイルの劣化が起きる。又、電気モータ駆動式の冷
媒圧縮機であると、温度上昇によりモータコイルの絶縁
不良の問題が生れる。このような不具合を避けるために
リキッドインジェクション回路１８が設けられている。[0011] The problem is, for example, in an engine-driven refrigerant compressor, the temperature of the oil for lubricating the refrigerant compressor increases, causing deterioration of the oil. Furthermore, in the case of an electric motor-driven refrigerant compressor, the problem of poor insulation of the motor coil arises due to temperature rise. A liquid injection circuit 18 is provided to avoid such problems.
【００１２】ここで従来のリキッドインジェクション回
路１８は、この管路１９に配した絞り（キャタピラリチ
ューブ）２１と、その上流に配置した電磁開閉弁２２と
で構成し、そして冷媒圧縮機１の吐出側に設けられて冷
媒の吐出温度を測定する冷媒吐出温度センサー２３を設
けている。Here, the conventional liquid injection circuit 18 is composed of a constrictor (caterpillar tube) 21 disposed in the conduit 19 and an electromagnetic on-off valve 22 disposed upstream thereof. A refrigerant discharge temperature sensor 23 is provided on the side and measures the refrigerant discharge temperature.
【００１３】冷媒吐出温度センサー２３よりの測定温度
データは、信号ラインＬ１により、制御装置２４に入力
する。制御装置２４は、この測定吐出温度を予じめ設定
した吐出温度設定値（エンジン駆動式冷媒圧縮機の場合
は通常１２５℃）と比較し、この設定値以上であると電
磁開閉弁２２を開ける制御信号を、又、設定値（通常１
１５℃）以下で閉じるような制御信号を出力ラインＬ２
に出力して、電磁開閉弁２２の電磁ソレノイドＳを動作
制御して、開閉制御している。Measured temperature data from the refrigerant discharge temperature sensor 23 is input to the control device 24 via a signal line L1. The control device 24 compares this measured discharge temperature with a preset discharge temperature setting value (usually 125° C. in the case of an engine-driven refrigerant compressor), and opens the electromagnetic on-off valve 22 if the measured discharge temperature is equal to or higher than this set value. Control signal and set value (usually 1
Output line L2 outputs a control signal that closes at temperatures below 15°C.
The electromagnetic solenoid S of the electromagnetic on-off valve 22 is controlled to open and close.
【００１４】[0014]
【発明が解決しようとする課題】しかし上述した従来の
リキッドインジェクション回路であると、電磁開閉弁が
開いた時、絞りで定まる定量の冷媒がアキュムレータに
流入する。それ故、その量が冷媒の吐出温度を下げるの
に多過ぎる場合もあれば、少な過ぎる場合もある。However, in the conventional liquid injection circuit described above, when the electromagnetic on-off valve opens, a quantity of refrigerant determined by the throttle flows into the accumulator. Therefore, the amount may be too high or too low to reduce the refrigerant discharge temperature.
【００１５】冷媒が流れ過ぎると、アキュムレータの冷
媒溜り量が多くなって、時には圧縮機への液戻り現象が
出て、圧縮機を損傷しかねない。逆に冷媒が少なくて、
吐出温度が下がらなく、吐出温度高による異常が出ると
いう欠点がある。[0015] If too much refrigerant flows, the amount of refrigerant accumulated in the accumulator increases, and sometimes liquid returns to the compressor, which may damage the compressor. On the other hand, there is less refrigerant,
The disadvantage is that the discharge temperature does not decrease and abnormalities occur due to high discharge temperature.
【００１６】本発明はこのような欠点のある従来のリキ
ッドインジェクション回路を改良して、冷媒の流れ過ぎ
を防止し、吐出温度が所定温度以下になるように制御し
て、冷凍装置の長期に亘る正常な運転動作が達成できる
ように図ったものである。The present invention improves the conventional liquid injection circuit which has such drawbacks, prevents the refrigerant from flowing too much, controls the discharge temperature to be below a predetermined temperature, and maintains the long-term operation of the refrigeration system. This is designed to ensure normal operation.
【００１７】[0017]
【課題を解決するための手段】本発明は、冷媒圧縮機、
凝縮器、減圧器、レシーバタンク、蒸発器、およびアキ
ュムレータとを順次連結すると共に、蒸発器を通ってア
キュムレータに戻ってくる冷媒に対して、バイパスして
冷媒を前記レシーバタンクよりアキュムレータに戻すリ
キッドインジェクション回路を有する冷媒回路構成の空
気調和装置において、リキッドインジェクション回路に
弁開度が自在に変化する比例制御弁を配設し、前記冷媒
圧縮機より吐出する冷媒の温度を検出する冷媒吐出温度
センサーを設けると共に外気温度を検出する外気温度セ
ンサーを設け、この外気温度センサーの検出する外気温
度に応じて冷媒の吐出温度の設定値を演算設定し、前記
冷媒吐出温度センサーにより測定される吐出温度が前記
設定値となるように比例制御弁の弁開度を調整制御する
制御装置を設けたものである。[Means for Solving the Problems] The present invention provides a refrigerant compressor,
A liquid injection system in which a condenser, a pressure reducer, a receiver tank, an evaporator, and an accumulator are sequentially connected, and the refrigerant that returns to the accumulator through the evaporator is bypassed and the refrigerant is returned from the receiver tank to the accumulator. In an air conditioner having a refrigerant circuit configuration, the liquid injection circuit is provided with a proportional control valve whose opening degree can be freely changed, and a refrigerant discharge temperature sensor is provided to detect the temperature of the refrigerant discharged from the refrigerant compressor. and an outside air temperature sensor that detects the outside air temperature, and calculates and sets a set value of the refrigerant discharge temperature according to the outside air temperature detected by the outside air temperature sensor, so that the discharge temperature measured by the refrigerant discharge temperature sensor A control device is provided to adjust and control the valve opening of the proportional control valve so that it reaches a set value.
【００１８】[0018]
【作用】外気温度センサーの検出する外気温度に応じて
変化する設定値に冷媒の吐出温度が設定される。冷媒吐
出温度センサーは冷媒圧縮機の冷媒吐出温度を検出し、
設定値より高い時は、制御装置が比例制御弁の開度を開
けるよう調節して、所定の設定値温度になるよう制御す
る。[Operation] The refrigerant discharge temperature is set to a set value that changes depending on the outside air temperature detected by the outside air temperature sensor. The refrigerant discharge temperature sensor detects the refrigerant discharge temperature of the refrigerant compressor,
When the temperature is higher than the set value, the control device adjusts the opening degree of the proportional control valve to control the temperature to a predetermined set value.
【００１９】こうして冷媒圧縮機の温度が上昇しないよ
うに、適量の冷媒がリキッドインジェクション回路を介
してアキュムレータに戻され、多い冷媒の戻し過ぎ、又
少ない量しか冷媒が戻らないという不都合な状況は防止
される。[0019] In this way, an appropriate amount of refrigerant is returned to the accumulator via the liquid injection circuit to prevent the temperature of the refrigerant compressor from rising, thereby preventing the inconvenient situation of returning too much refrigerant or returning only a small amount of refrigerant. be done.
【００２０】[0020]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。Embodiments Hereinafter, embodiments of the present invention will be explained based on the drawings.
【００２１】図１は本発明の冷媒回路図である。なお、
従来装置と同一又は同等の構成部品は同一番号で示して
いる。FIG. 1 is a refrigerant circuit diagram of the present invention. In addition,
Components that are the same or equivalent to those of the conventional device are indicated by the same numbers.
【００２２】リキッドインジェクション回路１８の管路
１９には、弁開度をステップ的に（０〜４８０ステップ
）に開口調整できる比例制御弁２５を配す。これによっ
て、アキュムレータに戻される冷媒流量は自在に調整さ
れる。比例制御弁２５は、ステッピングモータＭで駆動
されるモータ駆動式の電動弁である。The conduit 19 of the liquid injection circuit 18 is provided with a proportional control valve 25 that can adjust the valve opening in steps (0 to 480 steps). Thereby, the flow rate of refrigerant returned to the accumulator can be freely adjusted. The proportional control valve 25 is a motor-driven electric valve driven by a stepping motor M.
【００２３】冷媒圧縮機１の吐出部には、従来と同様に
、冷媒の吐出温度を測定するための冷媒吐出温度センサ
ー２３が取り付けられている。２６は外気温度測定用の
温度センサーで、この温度センサー２６よりの外気温度
データも信号ラインＬ１によって、冷媒吐出温度データ
と共に制御装置２７に入力する。A refrigerant discharge temperature sensor 23 for measuring the refrigerant discharge temperature is attached to the discharge portion of the refrigerant compressor 1, as in the conventional case. Reference numeral 26 denotes a temperature sensor for measuring outside air temperature, and outside air temperature data from this temperature sensor 26 is also input to the control device 27 along with refrigerant discharge temperature data through a signal line L1.
【００２４】制御の基本は、予め設定した吐出温度の設
定値以上に冷媒吐出温度が高くなると、制御装置２７は
、比例制御弁２５に対して、現在の弁開度より１ステッ
プ分多く開くように駆動制御する。The basics of control are that when the refrigerant discharge temperature rises above a preset discharge temperature setting, the control device 27 causes the proportional control valve 25 to open one step more than the current valve opening. to control the drive.
【００２５】これによって、アキュムレータ２に流入す
る冷媒流量が少し増え、吐出温度の低下作用をする。そ
の後再び、冷媒吐出温度センサー２３にて吐出温度を測
り、設定値まで下がっていなければ、更に１ステップ分
比例制御弁２５を開ける。この動作を繰り返して設定値
になった段階で、その弁開度に維持される。逆に開け過
ぎて、所定値以下に吐出温度が下がるようであるとステ
ップ的に閉めて行く。[0025] As a result, the flow rate of refrigerant flowing into the accumulator 2 increases slightly, which has the effect of lowering the discharge temperature. Thereafter, the discharge temperature is measured again by the refrigerant discharge temperature sensor 23, and if the temperature has not fallen to the set value, the proportional control valve 25 is further opened by one step. When this operation is repeated and the set value is reached, the valve opening is maintained at that level. On the other hand, if it is opened too much and the discharge temperature seems to drop below a predetermined value, it will be closed in steps.
【００２６】ここで、吐出温度の設定値は、外気温度が
異常に高くない通常条件の下で、オイル劣化を抑えられ
る温度（例えば１１０℃）を基準とし、外気温度が異常
高温となる時は、上方修正した設定値とする。下記に設
定値の演算式を示す。[0026] Here, the set value of the discharge temperature is based on the temperature (for example, 110°C) at which oil deterioration can be suppressed under normal conditions where the outside air temperature is not abnormally high. , the setting value has been revised upward. The calculation formula for the set value is shown below.
【００２７】設定値（Ｔ℃）＝１１０℃＋（外気温度−
３５）／３…Ｉ式
但し（外気温度−３５）＜０となる時は、設定値（Ｔ℃
）は１１０℃とする。[0027] Set value (T°C) = 110°C + (outside temperature -
35)/3...I formula However, when (outside temperature - 35) < 0, set value (T℃
) shall be 110°C.
【００２８】このように吐出温度の設定値を外気温度よ
り変化させることとすると、次のような利点が生れる。
冷媒の吐出温度は外気温度に追従して高くなる。すなわ
ち、外気温度が異常に高い時は、吐出温度も相当高くな
る。そこで、通常気温時に適当と定められ、外気温と無
関係に固定されている設定値（例えば１１０℃）に吐出
温度を均衡させようとすると、相当量の冷媒がアキュム
レータ２に戻り、冷媒が流れ過ぎる状態となり、液戻り
の心配が出る。[0028] When the set value of the discharge temperature is changed from the outside air temperature in this way, the following advantages arise. The discharge temperature of the refrigerant increases in accordance with the outside air temperature. That is, when the outside air temperature is abnormally high, the discharge temperature also becomes considerably high. Therefore, if an attempt is made to balance the discharge temperature to a set value (for example, 110°C) that is determined to be appropriate at normal temperatures and is fixed regardless of the outside temperature, a considerable amount of refrigerant will return to accumulator 2, causing too much refrigerant to flow. There is a risk of liquid returning.
【００２９】これを、設定値を上方修正すれば、その修
正設定値で冷媒流量は制御されるので、その懸念は無く
なる。このようにして、制御装置２７は、外気温度セン
サー２６より入力する外気温度データを用い、前述のＩ
式に基づき、吐出温度の設定値を演算する。そして、こ
の設定値と冷媒吐出温度センサー２３よりの温度データ
から比例制御弁２５の弁開度を演算し、比例制御弁２５
を制御し、吐出温度が設定値になるようにする。If the set value is corrected upward, the refrigerant flow rate will be controlled by the corrected set value, so this concern will disappear. In this way, the control device 27 uses the outside air temperature data input from the outside air temperature sensor 26 to
The set value of the discharge temperature is calculated based on the formula. Then, the valve opening degree of the proportional control valve 25 is calculated from this set value and the temperature data from the refrigerant discharge temperature sensor 23, and the proportional control valve 25 is
is controlled so that the discharge temperature reaches the set value.
【００３０】なお、吐出温度の設定値を外気温度の代り
に、吐出圧力や凝縮温度により演算しても同様の効果が
得られる。Note that the same effect can be obtained by calculating the set value of the discharge temperature using the discharge pressure or the condensing temperature instead of the outside air temperature.
【００３１】図２は制御装置２７にて実行される制御動
作を示すフローチャートである。FIG. 2 is a flowchart showing control operations executed by the control device 27.
【００３２】外気温度を検出し（処理３１）、その外気
温度を利用して設定値を演算し（処理３２）、その設定
値と吐出温度との比較を行い（判断３３）、吐出温度が
高ければ（判断３３のＹＥＳ）、比例制御弁２５を１ス
テップ分開く（処理３４）。設定値以下の吐出温度であ
れば（判断３３のＮＯ）、閉じる（処理３５）。[0032] Detect the outside air temperature (process 31), use the outside air temperature to calculate a set value (process 32), compare the set value with the discharge temperature (judgment 33), and determine if the discharge temperature is high. If (YES in judgment 33), the proportional control valve 25 is opened by one step (process 34). If the discharge temperature is less than or equal to the set value (determination 33: NO), the process is closed (process 35).
【００３３】[0033]
【発明の効果】以上のように、本発明によれば、弁開度
が自在に変化する比例制御弁を使用して、リキッドイン
ジェクション回路の冷媒の流量制御をするようにしたの
で、冷媒の流れ過ぎ、少な過ぎがなくなる。これによっ
てアキュムレータへの冷媒の溜り込みや、圧縮機への液
戻りを防止できると共に、吐出温度高の異常が起こらず
、圧縮機の温度上昇による不良動作や寿命の低下を妨げ
る。[Effects of the Invention] As described above, according to the present invention, the flow rate of refrigerant in the liquid injection circuit is controlled using a proportional control valve whose valve opening degree can be freely changed. There will be no more or less. This prevents refrigerant from accumulating in the accumulator and returning to the compressor, and also prevents abnormalities in the discharge temperature from occurring, preventing malfunctions and shortened lifespans due to compressor temperature increases.
【図１】本発明に係る冷媒回路図。FIG. 1 is a refrigerant circuit diagram according to the present invention.
【図２】本発明の冷媒回路において、そのリキッドイン
ジェクション回路における冷媒の流量制御の制御方法を
説明するフローチャート。FIG. 2 is a flowchart illustrating a method of controlling the flow rate of refrigerant in the liquid injection circuit in the refrigerant circuit of the present invention.
【図３】従来の冷媒回路図。FIG. 3 is a conventional refrigerant circuit diagram.
１ 冷媒圧縮機
２ アキュムレータ
６ 室内熱交換器
７ 室外熱交換器
１４ レシーバタンク
１８ リキッドインジェクション回路２３ 冷媒吐
出温度センサー
２５ 比例制御弁
２６ 温度センサー
２７ 制御装置1 Refrigerant compressor 2 Accumulator 6 Indoor heat exchanger 7 Outdoor heat exchanger 14 Receiver tank 18 Liquid injection circuit 23 Refrigerant discharge temperature sensor 25 Proportional control valve 26 Temperature sensor 27 Control device
Claims (1)
バタンク、蒸発器、およびアキュムレータとを順次連結
すると共に、蒸発器を通ってアキュムレータに戻ってく
る冷媒に対して、バイパスして冷媒を前記レシーバタン
クよりアキュムレータに戻すリキッドインジェクション
回路を有する冷媒回路構成の空気調和装置において、リ
キッドインジェクション回路に弁開度が自在に変化する
比例制御弁を配設し、前記冷媒圧縮機より吐出する冷媒
の温度を検出する冷媒吐出温度センサーを設けると共に
外気温度を検出する外気温度センサーを設け、この外気
温度センサーの検出する外気温度に応じて冷媒の吐出温
度の設定値を演算設定し、前記冷媒吐出温度センサーに
より測定される吐出温度が前記設定値となるように比例
制御弁の弁開度を調整制御する制御装置を設けたことを
特徴とする空気調和装置。Claim 1: A refrigerant compressor, a condenser, a pressure reducer, a receiver tank, an evaporator, and an accumulator are sequentially connected, and the refrigerant is bypassed and returned to the accumulator through the evaporator. In an air conditioner having a refrigerant circuit configuration having a liquid injection circuit that returns the liquid from the receiver tank to the accumulator, the liquid injection circuit is provided with a proportional control valve whose opening degree can be freely changed, and the refrigerant discharged from the refrigerant compressor is controlled. A refrigerant discharge temperature sensor is provided to detect the temperature, and an outside temperature sensor is provided to detect the outside air temperature, and a set value of the refrigerant discharge temperature is calculated and set according to the outside air temperature detected by the outside air temperature sensor. An air conditioner comprising: a control device that adjusts and controls the valve opening of the proportional control valve so that the discharge temperature measured by the sensor becomes the set value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3142670A JP2951043B2 (en) | 1991-05-20 | 1991-05-20 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3142670A JP2951043B2 (en) | 1991-05-20 | 1991-05-20 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04344072A true JPH04344072A (en) | 1992-11-30 |
| JP2951043B2 JP2951043B2 (en) | 1999-09-20 |
Family
ID=15320771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3142670A Expired - Lifetime JP2951043B2 (en) | 1991-05-20 | 1991-05-20 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2951043B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07189908A (en) * | 1993-12-28 | 1995-07-28 | Mitsubishi Electric Corp | Accumulator and refrigeration cycle device |
| JP2001027460A (en) * | 1993-12-28 | 2001-01-30 | Mitsubishi Electric Corp | Refrigeration cycle system |
| JP2008008540A (en) * | 2006-06-28 | 2008-01-17 | Sanyo Electric Co Ltd | Refrigerating cycle device, heat pump-type water heater, and control method of refrigerating cycle device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100482539B1 (en) | 1999-10-18 | 2005-04-14 | 다이킨 고교 가부시키가이샤 | Refrigerating device |
| KR102021653B1 (en) * | 2017-01-02 | 2019-09-20 | 한국공항공사 | Cooling and heating system for boarding bridge |
-
1991
- 1991-05-20 JP JP3142670A patent/JP2951043B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07189908A (en) * | 1993-12-28 | 1995-07-28 | Mitsubishi Electric Corp | Accumulator and refrigeration cycle device |
| JP2001027460A (en) * | 1993-12-28 | 2001-01-30 | Mitsubishi Electric Corp | Refrigeration cycle system |
| JP2008008540A (en) * | 2006-06-28 | 2008-01-17 | Sanyo Electric Co Ltd | Refrigerating cycle device, heat pump-type water heater, and control method of refrigerating cycle device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2951043B2 (en) | 1999-09-20 |
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