JPH062962A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPH062962A JPH062962A JP16104792A JP16104792A JPH062962A JP H062962 A JPH062962 A JP H062962A JP 16104792 A JP16104792 A JP 16104792A JP 16104792 A JP16104792 A JP 16104792A JP H062962 A JPH062962 A JP H062962A
- Authority
- JP
- Japan
- Prior art keywords
- compressor
- accumulator
- pipe
- oil
- tube
- 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.)
- Withdrawn
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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2105—Oil temperatures
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は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.
【0002】[0002]
【従来の技術】図3は従来の空気調和機の冷媒回路であ
る。図において、従来の空気調和機は圧縮機1、オイル
セパレータ2、オイルセパレータ入口管2a、油分離部
2b、オイルセパレータ出口管2c、オイルセパレータ
の油戻し管2d、流量調整管2e、四方弁3、室内熱交
換器4、膨張機構5、逆止弁6、膨張機構7、室外熱交
換器8、アキュムレータ9、アキュムレータの入口管9
a、アキュムレータのU字管9d、アキュムレータの油
戻し穴9e、吸入管10よりなっている。冷房運転時は
圧縮機1から吐出された高温・高圧の冷凍機油を含んだ
冷媒ガスは、オイルセパレータ入口管2aからオイルセ
パレータ2に入る。油分離部2bで冷凍機油が分離され
オイルセパレータ2の底部にたまる。ガス冷媒はオイル
セパレータ出口管2cから四方弁3を通り室外熱交換器
8に入る。ここで放熱凝縮して液冷媒となって逆止弁6
を通り、膨張機構5に入る。ここで減圧して低圧の二相
冷媒となって、室内熱交換器4に入る。ここで吸熱蒸発
して四方弁3を通り、アキュムレータの入口管9aから
アキュムレータ9に入る。ここで未蒸発冷媒は分離され
底部に溜る。ガス冷媒はU字管9dを通り、吸入管10
から圧縮機1に吸込まれ圧縮される。一方、アキュムレ
ータ9の底部に溜った冷凍機油を含む液冷媒は油戻し穴
9eから適量U字管9d内に吸込まれ、圧縮機1の吸入
管10を介して圧縮機1に吸込まれ、潤滑に供する。一
方、オイルセパレータ2の底部に溜った冷凍機油は油戻
し管2dから流量調整管2eを通って、圧縮機1の吸入
管10に合流し圧縮機1に吸込まれる。このようにオイ
ルセパレータ2とアキュムレータ9の油戻し機能によ
り、圧縮機1の冷凍機油が不足しないようなっている。2. Description of the Related Art FIG. 3 shows a refrigerant circuit of a conventional air conditioner. In the figure, a conventional air conditioner includes a compressor 1, an oil separator 2, an oil separator inlet pipe 2a, an oil separator 2b, an oil separator outlet pipe 2c, an oil separator oil return pipe 2d, a flow rate adjusting pipe 2e, and a four-way valve 3. , Indoor heat exchanger 4, expansion mechanism 5, check valve 6, expansion mechanism 7, outdoor heat exchanger 8, accumulator 9, accumulator inlet pipe 9
a, a U-shaped pipe 9d of the accumulator, an oil return hole 9e of the accumulator, and a suction pipe 10. During the cooling operation, the refrigerant gas containing the high temperature and high pressure refrigeration oil discharged from the compressor 1 enters the oil separator 2 through the oil separator inlet pipe 2a. Refrigerating machine oil is separated by the oil separating portion 2b and is accumulated on the bottom of the oil separator 2. The gas refrigerant enters the outdoor heat exchanger 8 from the oil separator outlet pipe 2c through the four-way valve 3. Here, heat is condensed and becomes a liquid refrigerant, and the check valve 6
And enters the expansion mechanism 5. Here, the pressure is reduced to form a low-pressure two-phase refrigerant, which enters the indoor heat exchanger 4. Here, it endothermically evaporates, passes through the four-way valve 3, and enters the accumulator 9 from the inlet pipe 9a of the accumulator. Here, the non-evaporated refrigerant is separated and collected at the bottom. The gas refrigerant passes through the U-shaped pipe 9d and the suction pipe 10
Is sucked into the compressor 1 and compressed. On the other hand, the liquid refrigerant containing the refrigerating machine oil accumulated at the bottom of the accumulator 9 is sucked into the U-shaped pipe 9d through the oil return hole 9e, and is sucked into the compressor 1 through the suction pipe 10 of the compressor 1 for lubrication. To serve. On the other hand, the refrigerating machine oil accumulated at the bottom of the oil separator 2 merges with the suction pipe 10 of the compressor 1 through the oil return pipe 2d, the flow rate adjusting pipe 2e, and is sucked into the compressor 1. In this way, the oil returning function of the oil separator 2 and the accumulator 9 prevents the refrigerating machine oil of the compressor 1 from becoming insufficient.
【0003】[0003]
【発明が解決しようとする課題】上記従来の空気調和機
には解決すべき次の課題があった。The above conventional air conditioner has the following problems to be solved.
【0004】即ち、従来の空気調和機においては、アキ
ュムレータ9の油戻し穴9eは大きさが一定のため、油
戻し穴9eから戻る液冷媒の量は変化が少い。一方、オ
イルセパレータ2で分離された冷凍機油は、ほぼ吐出ガ
ス温度に近く、高温である。アキュムレータ9からの液
冷媒とオイルセパレータ2からの冷凍機油は、吸入管1
0で合流して圧縮機1に吸込まれる。このため、高負荷
運転時は吐出ガス温度が高いため、吸入管10の温度が
上昇し圧縮機1が異常過熱する。また、低負荷時は吐出
ガス温度が低く、吸入管10の温度が低下し圧縮機1の
内部温度が過度に低下する欠点があった。That is, in the conventional air conditioner, since the oil return hole 9e of the accumulator 9 has a constant size, the amount of the liquid refrigerant returning from the oil return hole 9e changes little. On the other hand, the refrigerating machine oil separated by the oil separator 2 is high in temperature, which is almost close to the discharge gas temperature. The liquid refrigerant from the accumulator 9 and the refrigerating machine oil from the oil separator 2 are sucked into the suction pipe 1
It merges at 0 and is sucked into the compressor 1. For this reason, since the discharge gas temperature is high during high load operation, the temperature of the suction pipe 10 rises and the compressor 1 abnormally overheats. Further, when the load is low, the discharge gas temperature is low, the temperature of the suction pipe 10 is lowered, and the internal temperature of the compressor 1 is excessively lowered.
【0005】一方、圧縮機1が停止中はアキュムレータ
9の下方にある油戻し穴9eからアキュムレータ9内の
液冷媒がアキュムレータのU字管9d内に入り込むた
め、圧縮機1の起動時、アキュムレータのU字管9d内
に溜った液冷媒が圧縮機1に吸込まれ液圧縮による故障
や、圧縮機1内の冷凍機油が希釈され焼き付く欠点があ
る。On the other hand, when the compressor 1 is stopped, the liquid refrigerant in the accumulator 9 enters into the U-shaped pipe 9d of the accumulator through the oil return hole 9e below the accumulator 9, so that the accumulator is started when the compressor 1 is started. The liquid refrigerant accumulated in the U-shaped pipe 9d is sucked into the compressor 1 to cause a failure due to liquid compression, and the refrigerating machine oil in the compressor 1 is diluted and seized.
【0006】本発明は上記課題解決のため、吸入管の温
度変化範囲を所定値に収めると共に、起動時に液戻りを
生じることのない空気調和機を提供することを目的とす
る。In order to solve the above problems, it is an object of the present invention to provide an air conditioner that keeps the temperature change range of the suction pipe within a predetermined value and does not cause liquid return at the time of startup.
【0007】[0007]
【課題を解決するための手段】本発明は上記課題の解決
手段として、圧縮機の吸入側にアキュムレータを配する
と共に圧縮機の吐出側にオイルセパレータを配し、同オ
イルセパレータで分離された油を油戻し回路を介して圧
縮機吸入管へ戻すようにした空気調和機において、前記
アキュムレータをその出口管に対してアキュムレータ底
部から開閉弁及び流量調整管を有する油戻し管を接続し
た構成とすると共に、同開閉弁を前記油戻し回路の圧縮
機吸入管への接続部の前後の温度を検出しその温度差に
応じて開閉する制御手段を具備してなることを特徴とす
る空気調和機を提供しようとするものである。As a means for solving the above problems, the present invention provides an accumulator on the suction side of a compressor, an oil separator on the discharge side of the compressor, and an oil separated by the oil separator. In the air conditioner in which the oil is returned to the compressor suction pipe through the oil return circuit, the accumulator is configured such that an oil return pipe having an opening / closing valve and a flow rate adjusting pipe is connected to the outlet pipe of the accumulator from the bottom of the accumulator. At the same time, the air conditioner is provided with a control means for detecting the temperature before and after the connecting portion of the oil return circuit to the compressor suction pipe of the oil return circuit and opening and closing the temperature according to the temperature difference. It is the one we are trying to provide.
【0008】[0008]
【作用】本発明は上記のように構成されるので次の作用
を有する。Since the present invention is constructed as described above, it has the following actions.
【0009】即ち、アキュムレータをその出口管に対し
てアキュムレータ底部から開閉弁及び流量調整管を有す
る油戻し管を接続した構成とし、かつ、上記開閉弁を、
油戻し回路の圧縮機吸入管への接続部の前後の温度を検
出し、その温度差に応じて開閉する制御手段を備えるの
で、オイルセパレータ内の高温の冷凍機油は、油戻し
管、流量調整管を通り、圧縮機の吸入管に合流し、合流
後の吸入管温度が上昇し、合流前の吸入管温度と温度差
が生じると、この温度差をセンサで検知し、所定の温度
差となるように開閉弁を制御手段で制御して、アキュム
レータ底部から液冷媒を同開閉弁及び流量調整管を通し
吸入管に流す。That is, the accumulator has a constitution in which an oil return pipe having an opening / closing valve and a flow rate adjusting pipe is connected to the outlet pipe of the accumulator from the bottom, and the opening / closing valve is
The temperature of the front and rear of the connection of the oil return circuit to the compressor suction pipe is detected and the control means opens and closes according to the temperature difference. If it passes through the pipe and joins the suction pipe of the compressor, the temperature of the suction pipe after merging rises, and if there is a temperature difference with the temperature of the suction pipe before merging, this temperature difference is detected by the sensor and The control means controls the on-off valve so that the liquid refrigerant flows from the bottom of the accumulator to the suction pipe through the on-off valve and the flow rate adjusting pipe.
【0010】流量調整管はそれぞれ所定の流量抵抗をも
っている。この結果、圧縮機の過度の昇温、降温が抑止
される。The flow rate adjusting tubes each have a predetermined flow rate resistance. As a result, excessive temperature rise and temperature drop of the compressor are suppressed.
【0011】また、圧縮機の停止中は、開閉弁を閉とし
てアキュムレータ内の液冷媒をアキュムレータ出口管に
流入させない。圧縮機起動時は所定時間後に開とする。
これにより圧縮機の起動時の液戻りが防止される。Further, while the compressor is stopped, the on-off valve is closed to prevent the liquid refrigerant in the accumulator from flowing into the accumulator outlet pipe. When the compressor is started, it will be opened after a predetermined time.
This prevents the liquid from returning when the compressor is started.
【0012】[0012]
【実施例】本発明の第1、第2実施例を図1、図2によ
り説明する。なお、従来例と同様の構成部品には同符号
を付し、必要ある場合を除き説明を省略する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The first and second embodiments of the present invention will be described with reference to FIGS. The same components as those of the conventional example are designated by the same reference numerals, and the description thereof will be omitted unless necessary.
【0013】(第1実施例)第1実施例を図1により説
明する。図1は本実施例の空気調和機の冷媒回路図で、
図において、本実施例の理解を容易にするため、従来例
との相違点比較の形で説明すると、9Aはアキュムレー
タで、従来のアキュムレータ9(図3)に比べると、従
来のU字管9dと油戻し穴9eとが廃止され、その代り
に本実施例においては、アキュムレータ9Aの底部に油
戻し管9c、出口管9bが設けられ、油戻し管9cから
は開閉弁13、流量調整管14が直列状に出口管9b下
流に連通して設けられている点が異なる。油戻し管9c
の入口はアキュムレータ9Aの底部に近接して設けら
れ、かつ、流量調整管14は所定の流量抵抗を付与され
ている。圧縮機1の吸入管10には、流量調整管2eの
合流する前流側に温度センサ12が、後流側に温度セン
サ11がそれぞれ設けられ、別に設けられた、開閉弁1
3制御用の制御手段15に配線結合されている。その他
の構成は図3の従来例と同様である。(First Embodiment) A first embodiment will be described with reference to FIG. FIG. 1 is a refrigerant circuit diagram of the air conditioner of this embodiment,
In the figure, in order to facilitate understanding of the present embodiment, the difference from the conventional example will be described. 9A is an accumulator, which is a conventional U-shaped tube 9d compared to the conventional accumulator 9 (FIG. 3). The oil return hole 9e and the oil return hole 9e are eliminated. Instead, in the present embodiment, the oil return pipe 9c and the outlet pipe 9b are provided at the bottom of the accumulator 9A, and the opening / closing valve 13 and the flow rate adjusting pipe 14 are provided from the oil return pipe 9c. Are connected in series downstream of the outlet pipe 9b. Oil return pipe 9c
Is provided near the bottom of the accumulator 9A, and the flow rate adjusting pipe 14 is provided with a predetermined flow rate resistance. The intake pipe 10 of the compressor 1 is provided with a temperature sensor 12 on the front side where the flow rate adjusting pipe 2e joins and a temperature sensor 11 on the rear side, and the on-off valve 1 provided separately.
It is hard-wired to the control means 15 for 3 control. Other configurations are similar to those of the conventional example of FIG.
【0014】次に上記構成の作用について説明する。Next, the operation of the above configuration will be described.
【0015】図1において、オイルセパレータ2内の高
温の冷凍機油は油戻し管2d、流量調整管2eを通り圧
縮機1の吸入管10に合流し、圧縮機1に吸込まれ潤滑
に使われる。一方、合流後の吸入管10の温度は上昇す
るため、合流前の吸入管10の温度と温度差が生じる。
これを温度センサ11,12で検知して、制御手段15
に入力する。制御手段15はこの入力値により所定の温
度差となるように開閉弁13を制御し、アキュムレータ
9A内の冷凍機油を含む液冷媒はアキュムレータ9Aの
底部より油戻し管9c、開閉弁13、流量調整管14を
通り、アキュムレータの出口管9bに合流する。そして
吸入管10を通り圧縮機1に吸込まれる。上記温度差が
所定値より大きい時は、制御手段15が開閉弁13を
開、小さい時は閉とする。In FIG. 1, the high temperature refrigerating machine oil in the oil separator 2 merges with the suction pipe 10 of the compressor 1 through the oil return pipe 2d and the flow rate adjusting pipe 2e, is sucked into the compressor 1 and used for lubrication. On the other hand, since the temperature of the suction pipe 10 after the merging increases, a temperature difference from the temperature of the suction pipe 10 before the merging occurs.
This is detected by the temperature sensors 11 and 12, and the control means 15
To enter. The control means 15 controls the on-off valve 13 so that a predetermined temperature difference is obtained by this input value, and the liquid refrigerant containing the refrigerating machine oil in the accumulator 9A is adjusted from the bottom of the accumulator 9A to the oil return pipe 9c, the on-off valve 13, the flow rate adjustment. It passes through the pipe 14 and joins the outlet pipe 9b of the accumulator. Then, it is sucked into the compressor 1 through the suction pipe 10. When the temperature difference is larger than a predetermined value, the control means 15 opens the on-off valve 13, and when it is small, it is closed.
【0016】一方、圧縮機1の停止中は、制御手段15
が開閉弁13を閉として、アキュムレータ9A内の液を
アキュムレータの出口管9b内に流入させない。圧縮機
1の起動時は所定時間後に開閉弁13を開として通常運
転とする。これにより起動時の圧縮機1への液もどりを
防止する。On the other hand, while the compressor 1 is stopped, the control means 15
Closes the on-off valve 13 to prevent the liquid in the accumulator 9A from flowing into the outlet pipe 9b of the accumulator. When the compressor 1 is started, the on-off valve 13 is opened after a predetermined time and the normal operation is performed. This prevents the liquid from returning to the compressor 1 at startup.
【0017】以上の通り、第1実施例によれば、運転
中、オイルセパレータ2からの油戻し管2dと吸入管1
0との合流点近傍の温度が、合流前後で所定値を越えた
場合は、温度センサ11,12でその温度(差)を入力
される制御手段15が開閉弁13を開閉制御して、温度
が適正範囲に収まるよう働くので、運転負荷の高低に拘
らず、圧縮機1が常に正常運転を維持できるという利点
がある。As described above, according to the first embodiment, the oil return pipe 2d from the oil separator 2 and the suction pipe 1 are in operation.
When the temperature in the vicinity of the point of merging with 0 exceeds a predetermined value before and after merging, the control means 15 to which the temperature (difference) is input by the temperature sensors 11 and 12 controls the opening / closing valve 13 to open / close the temperature. Has an advantage that the compressor 1 can always maintain normal operation regardless of the operating load.
【0018】また、停止中は制御手段15が開閉弁13
を閉じるので、アキュムレータ9A内の液は出口管9b
内に入ることができず、起動時に圧縮機1への液もどり
がないので液圧縮による故障や、冷凍機油が希釈されて
焼付きを生じると云った不具合がなくなるという利点が
ある。During the stop, the control means 15 controls the open / close valve 13
The liquid in the accumulator 9A is closed by the outlet pipe 9b.
Since there is no return to the compressor 1 during startup and there is no return of liquid to the compressor 1, there is the advantage of eliminating troubles due to liquid compression and problems such as seizure due to dilution of refrigerating machine oil.
【0019】(第2実施例)第2実施例を図2により説
明する。図2は本実施例のアキュムレータ9A近傍の図
で、第1実施例では開閉弁13、流量調整管14が各1
個であったのに対し、本実施例では各2個が並列に設け
られている点のみが相違し、その他は第1実施例と同様
である。(Second Embodiment) A second embodiment will be described with reference to FIG. FIG. 2 is a view of the vicinity of the accumulator 9A of the present embodiment. In the first embodiment, the opening / closing valve 13 and the flow rate adjusting pipe 14 are each 1
In contrast to the first embodiment, the present embodiment is different only in that two pieces are provided in parallel, and the other points are the same as in the first embodiment.
【0020】即ち、図2において、13a,13bは開
閉弁、14a,14bは流量調整管で、開閉弁13aと
流量調整管14aとは直列に油戻し管9cから出口管9
bの下流部に連通されており、これに並列して開閉弁1
3bと流量調整管14bとが直列に連通されている。な
お、開閉弁13a,13bは図示しない制御手段15に
配線結合されている。That is, in FIG. 2, 13a and 13b are on-off valves, 14a and 14b are flow rate adjusting pipes, and the on-off valve 13a and the flow rate adjusting pipe 14a are connected in series from the oil return pipe 9c to the outlet pipe 9
It is connected to the downstream part of b and the opening / closing valve 1 is arranged in parallel with it.
3b and the flow rate adjusting pipe 14b are connected in series. The on-off valves 13a and 13b are hard-wired to the control means 15 (not shown).
【0021】次に上記構成の作用について説明する。Next, the operation of the above configuration will be described.
【0022】第1実施例と同様、制御手段15が開閉弁
13a、開閉弁13bを開閉することにより、圧縮機1
に吸込まれる、冷凍機油を含んだ液冷媒の流量を巾広く
調整する。As in the first embodiment, the control means 15 opens and closes the on-off valves 13a and 13b to open the compressor 1
Widely adjust the flow rate of the liquid refrigerant containing the refrigerating machine oil that is drawn into the.
【0023】一方、圧縮機1の停止中は、開閉弁13
a,13bを閉として、アキュムレータ9A内の液をア
キュムレータ出口管9b内に流入させない。圧縮機1の
起動時は所定時間後に開閉弁13a,13bを開として
通常運転とする。これにより起動時の圧縮機1の液もど
りを防止する。On the other hand, while the compressor 1 is stopped, the on-off valve 13
By closing a and 13b, the liquid in the accumulator 9A is prevented from flowing into the accumulator outlet pipe 9b. When the compressor 1 is started, the on-off valves 13a and 13b are opened after a predetermined time, and normal operation is performed. This prevents the liquid from returning to the compressor 1 at startup.
【0024】本実施例の場合は液流量の調整範囲が広い
という利点がある。In the case of this embodiment, there is an advantage that the adjustment range of the liquid flow rate is wide.
【0025】[0025]
【発明の効果】本発明は上記のように構成されるので次
の効果を有する。Since the present invention is constructed as described above, it has the following effects.
【0026】即ち、本発明の空気調和機においては、オ
イルセパレータからの油戻しにより圧縮機の吸入管が温
度上昇すると、吸入管上の油戻しの合流前後の温度差が
自動的に検知され、温度差が適正となるように、アキュ
ムレータから圧縮機へ戻る液量を調整するため、吐出ガ
ス温度が高い高負荷運転から吐出ガス温度が低い低負荷
時まで圧縮機の内部温度を適正に保つことができる。That is, in the air conditioner of the present invention, when the temperature of the suction pipe of the compressor rises due to the oil return from the oil separator, the temperature difference before and after the merging of the oil return on the suction pipe is automatically detected, To adjust the amount of liquid returning from the accumulator to the compressor so that the temperature difference is appropriate, maintain the compressor internal temperature appropriately from high load operation with high discharge gas temperature to low load with low discharge gas temperature. You can
【0027】一方、圧縮機が停止中は、上記温度差が生
じないのでアキュムレータ油戻し管出口の開閉弁を閉と
するため、起動時に生じる圧縮機への液もどりがなく、
これにより液圧縮による故障や冷凍機油の希釈による焼
付きがなくなる。On the other hand, when the compressor is stopped, the above-mentioned temperature difference does not occur, so the on-off valve at the outlet of the accumulator oil return pipe is closed. Therefore, there is no liquid returning to the compressor at the time of startup,
This eliminates troubles due to liquid compression and seizure due to dilution of refrigerating machine oil.
【図1】本発明の第1実施例の空気調和機の冷媒回路
図、FIG. 1 is a refrigerant circuit diagram of an air conditioner according to a first embodiment of the present invention,
【図2】本発明の第2実施例の空気調和機の冷媒回路
図、FIG. 2 is a refrigerant circuit diagram of an air conditioner of a second embodiment of the present invention,
【図3】従来の空気調和機を示す冷媒回路図である。FIG. 3 is a refrigerant circuit diagram showing a conventional air conditioner.
1 圧縮機 2 オイルセパレータ 2d 油戻し管 2e 流量調整管 9A アキュムレータ 9b 出口管 9c 油戻し管 10 吸入管 11,12 温度センサ 13,13a,13b 開閉弁 14,14a,14b 流量調整管 15 制御手段 DESCRIPTION OF SYMBOLS 1 Compressor 2 Oil separator 2d Oil return pipe 2e Flow rate adjustment pipe 9A Accumulator 9b Outlet pipe 9c Oil return pipe 10 Suction pipe 11,12 Temperature sensor 13,13a, 13b Open / close valve 14,14a, 14b Flow rate adjustment pipe 15 Control means
フロントページの続き (72)発明者 佐々倉 正彦 愛知県西春日井郡西枇杷島町字旭町3丁目 1番地 三菱重工業株式会社エアコン製作 所内 (72)発明者 小川 孝 愛知県名古屋市中村区岩塚町字九反所60番 地の1 中菱エンジニアリング株式会社内Front page continued (72) Inventor Masahiko Sakura 3-1-1 Asahi-cho, Nishibiwajima-cho, Nishi-Kasugai-gun, Aichi Prefecture Mitsubishi Heavy Industries, Ltd. Air-conditioner factory (72) Takashi Ogawa Kuttan, Iwatsuka-cho, Nakamura-ku, Aichi Prefecture No. 1 at 60 Churyo Engineering Co., Ltd.
Claims (1)
ると共に圧縮機の吐出側にオイルセパレータを配し、同
オイルセパレータで分離された油を油戻し回路を介して
圧縮機吸入管へ戻すようにした空気調和機において、前
記アキュムレータをその出口管に対してアキュムレータ
底部から開閉弁及び流量調整管を有する油戻し管を接続
した構成とすると共に、同開閉弁を前記油戻し回路の圧
縮機吸入管への接続部の前後の温度を検出しその温度差
に応じて開閉する制御手段を具備してなることを特徴と
する空気調和機。1. An accumulator is arranged on the suction side of the compressor, an oil separator is arranged on the discharge side of the compressor, and the oil separated by the oil separator is returned to the compressor suction pipe via an oil return circuit. In the air conditioner described above, the accumulator is configured such that an oil return pipe having an opening / closing valve and a flow rate adjusting pipe is connected to the outlet pipe of the accumulator, and the opening / closing valve is connected to the compressor suction port of the oil return circuit. An air conditioner comprising control means for detecting a temperature before and after a connecting portion to a pipe and opening / closing according to the temperature difference.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16104792A JPH062962A (en) | 1992-06-19 | 1992-06-19 | Air conditioner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16104792A JPH062962A (en) | 1992-06-19 | 1992-06-19 | Air conditioner |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH062962A true JPH062962A (en) | 1994-01-11 |
Family
ID=15727598
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16104792A Withdrawn JPH062962A (en) | 1992-06-19 | 1992-06-19 | Air conditioner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH062962A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008157504A (en) * | 2006-12-21 | 2008-07-10 | Itomic Kankyou System Co Ltd | Heat pump device and accumulator for heat pump |
JP2014020613A (en) * | 2012-07-13 | 2014-02-03 | Fujitsu General Ltd | Air conditioner |
JP2014145554A (en) * | 2013-01-30 | 2014-08-14 | Panasonic Corp | Air conditioner and accumulator |
JP2014181869A (en) * | 2013-03-21 | 2014-09-29 | Fujitsu General Ltd | Air conditioner |
JP2016118317A (en) * | 2014-12-19 | 2016-06-30 | 三菱重工業株式会社 | Unit for compressor, compressor, and refrigeration circuit |
-
1992
- 1992-06-19 JP JP16104792A patent/JPH062962A/en not_active Withdrawn
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008157504A (en) * | 2006-12-21 | 2008-07-10 | Itomic Kankyou System Co Ltd | Heat pump device and accumulator for heat pump |
JP2014020613A (en) * | 2012-07-13 | 2014-02-03 | Fujitsu General Ltd | Air conditioner |
JP2014145554A (en) * | 2013-01-30 | 2014-08-14 | Panasonic Corp | Air conditioner and accumulator |
JP2014181869A (en) * | 2013-03-21 | 2014-09-29 | Fujitsu General Ltd | Air conditioner |
JP2016118317A (en) * | 2014-12-19 | 2016-06-30 | 三菱重工業株式会社 | Unit for compressor, compressor, and refrigeration circuit |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990831 |