JPH03236568A - Accumulator - Google Patents

Accumulator

Info

Publication number
JPH03236568A
JPH03236568A JP3270090A JP3270090A JPH03236568A JP H03236568 A JPH03236568 A JP H03236568A JP 3270090 A JP3270090 A JP 3270090A JP 3270090 A JP3270090 A JP 3270090A JP H03236568 A JPH03236568 A JP H03236568A
Authority
JP
Japan
Prior art keywords
tank
oil
oil return
outlet pipe
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
Application number
JP3270090A
Other languages
Japanese (ja)
Inventor
Kenji Umetsu
健児 梅津
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP3270090A priority Critical patent/JPH03236568A/en
Publication of JPH03236568A publication Critical patent/JPH03236568A/en
Pending legal-status Critical Current

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
    • F25B31/00—Compressor arrangements
    • F25B31/002—Lubrication
    • F25B31/004—Lubrication oil recirculating arrangements
    • 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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/006—Accumulators

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

PURPOSE:To return an enough amount of oil to a compressor and to reduce an amount of a liquid refrigerant flowing in the compressor by a method wherein an outlet pipe through which a refrigerant and oil are caused to flow and guided to the outside of a tank is provided, oil return holes are formed in the upper and lower part of the outlet pipe, the opening area of the lower oil return hole is set being smaller than that of the upper oil return hole. CONSTITUTION:An accumulator 1 has a cylinder type tank 2 formed in an airtight manner, and an outlet pipe 8 is installed therein. The outlet pipe 8 is inserted in the tank 2 from the lower side, and a portion inserted in the tank 2 is extended directly upward along the axis of the tank 2. Two oil return holes 10 and 11 respectively located in the tank 2 are formed, and the opening area of the lower oil return hole 10 is set to a value smaller than that of the upper oil return hole 11. A ratio between the opening areas thereof is set to 1:1.4 or more. During normal operation of a freezing cycle, oil flows in the tank 2 after completion of one full freezing cycle, oil gathering at a bottom 6 is capable of flowing through the lower oil return hole 10 to the outlet pipe 8, and oil in an amount enough for lubrication of a compressor can be reliably returned to the compressor.

Description

【発明の詳細な説明】 ［発明の目的］ （産業上の利用分野） 本発明は、例えば、伶凍サイクルを構成する圧縮機の吸
込み側に接続され、圧縮機へガス冷媒および而を供給す
るアキュムレータに関する。[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention relates to a compressor connected to the suction side of a compressor constituting a freezing cycle, and supplies gas refrigerant and gas to the compressor. Regarding accumulators.

（従来の技術） 例えば、第２図に示すようにロータリ式等の圧縮機Ａに
接続されるアキュムレータ１か知られている。すなわち
、このアキュムレータ１は冷凍サイクル中に配置されて
おり、図示しない蒸発器から送られたガス冷媒を、矢印
Ｂて示すようにタンク２内に一旦導入したのち、出口管
３に流通させて圧縮機Ａのシリンダ４内に供給する。(Prior Art) For example, as shown in FIG. 2, an accumulator 1 connected to a rotary compressor A is known. That is, this accumulator 1 is arranged in a refrigeration cycle, and after the gas refrigerant sent from an evaporator (not shown) is once introduced into a tank 2 as shown by arrow B, it is passed through an outlet pipe 3 and compressed. Supplied into cylinder 4 of machine A.

また、アキュムレータ１は上記出口管３の、タンク２内
に差込まれた部位に、真円状に開口する油戻し孔５を有
している。そして、アキュムレータ１はこの曲戻し孔５
を、タンク２の底部６の近傍の部位に位置させている。Further, the accumulator 1 has an oil return hole 5 that opens in a perfect circular shape at a portion of the outlet pipe 3 that is inserted into the tank 2. The accumulator 1 is connected to this return hole 5.
is located near the bottom 6 of the tank 2.

そして、アキュムレータ１は、圧縮機Ａからガス冷媒と
ともに吐出され冷凍サイクル中を流通した浦を、タンク
２に一旦溜めてガス冷媒と分離させたのち、油戻し孔５
から出口管３内に導いて圧縮機Ａ中に戻すようになって
いる。Then, the accumulator 1 stores the ura discharged from the compressor A together with the gas refrigerant and circulated in the refrigeration cycle in the tank 2 and separates it from the gas refrigerant, and then the oil return hole 5
From there, it is guided into the outlet pipe 3 and returned to the compressor A.

さらに、アキュムレータ１は、完全にガス化されないま
ま上記蒸発器から送り出される液冷媒が生じた場合に、
この液冷媒をタンク２に一時的に溜めておくことかでき
るようになっている。Furthermore, when liquid refrigerant is sent out from the evaporator without being completely gasified, the accumulator 1
This liquid refrigerant can be temporarily stored in the tank 2.

（発明が解決しようとする課題） ところで、上連のような従来のアキュムレタ１では、油
戻し孔５の径寸法を大きく設定すれば浦の流量を大とす
ることができ、圧縮機Ａ内の潤滑等に十分な量の油を圧
縮機Ａへ戻すことができる。しかし、タンク２内にはガ
ス化されないままの液冷媒が流入することがあり、油戻
し孔５の径寸法を単に大きく設定したのでは、液冷媒が
出口管３に流れ込み易くなり、圧縮機へ流入する液冷媒
の量が増大するという不具合がある。(Problem to be Solved by the Invention) By the way, in the conventional accumulator 1 like the one in the above system, if the diameter of the oil return hole 5 is set large, the flow rate of the ura can be increased. A sufficient amount of oil can be returned to the compressor A for lubrication and the like. However, ungasified liquid refrigerant may flow into the tank 2, and if the diameter of the oil return hole 5 is simply set large, the liquid refrigerant will easily flow into the outlet pipe 3 and flow into the compressor. There is a problem that the amount of liquid refrigerant flowing in increases.

さらに、従来は、圧縮機Ａへ戻る油の量を十分な値に保
つことができ、且つ出口管３に侵入する液冷媒の量がで
きる限り少なくなるよう、油の量と液冷媒の量とのバラ
ンスをとりながら、油戻し孔５の径寸法を決定していた
。Furthermore, conventionally, the amount of oil and the amount of liquid refrigerant are adjusted so that the amount of oil returning to the compressor A can be maintained at a sufficient value and the amount of liquid refrigerant that enters the outlet pipe 3 is as small as possible. The diameter of the oil return hole 5 was determined while keeping the balance.

本発明の目的とするところは、十分な量の油を圧縮機に
戻すことができ且つ圧縮機に流入する液冷媒の量を低減
することが可能なアキュムレータを提供することにある
。An object of the present invention is to provide an accumulator that can return a sufficient amount of oil to the compressor and reduce the amount of liquid refrigerant flowing into the compressor.

【発明の構成コ （課題を解決するための手段および作用）上記目的を達
成するために本発明は、冷媒と油とをその内部に流入さ
せるタンクと、このタンクに下側から差込まれ上記タン
ク内で上方に延び、冷媒と油とをその内部に流通させて
タンクめ外部へ導く出口管と、この出口管に上下に配設
され、下側に位置するものの開口面積を上側に位置する
ものの開口面積よりも小とするとともに、互いの開口面
積の比を１　：　１．４以上に設定された２つの油戻し
孔とを具備したことにある。Structure of the Invention (Means and Effects for Solving the Problems) In order to achieve the above object, the present invention includes a tank into which refrigerant and oil flow, and a tank that is inserted into the tank from below and has the above-mentioned features. An outlet pipe that extends upward in the tank and allows the refrigerant and oil to flow inside the tank and leads it to the outside of the tank, and an outlet pipe that is arranged above and below this outlet pipe, and the opening area of the one located on the lower side is located on the upper side. The oil return hole is smaller than the opening area of the oil return hole, and has two oil return holes whose opening areas are set at a ratio of 1:1.4 or more.

こうすることによって本発明は、十分な量の油を圧縮機
に戻ながら圧縮機に流入する液冷媒の量を低減できるよ
うにしたことにある。By doing so, the present invention is capable of reducing the amount of liquid refrigerant flowing into the compressor while returning a sufficient amount of oil to the compressor.

（実施例） 以下、本発明の一実施例を第１図に基づいて説明する。(Example) Hereinafter, one embodiment of the present invention will be described based on FIG.

なお、従来の技術の項で説明したものと重複するものに
ついては同一番号を付し、その説明は省略する。Components that are the same as those described in the prior art section are given the same numerals and their explanations will be omitted.

第１図は本発明の一実施例を示すもので、図中１は、冷
凍サイクル中に配置され圧縮機（図示しない）の吸込み
側に接続されるアキュムレータを示している。FIG. 1 shows an embodiment of the present invention, in which reference numeral 1 indicates an accumulator placed in a refrigeration cycle and connected to the suction side of a compressor (not shown).

このアキュムレータ１は気密的に形成された筒型容器状
のタンク２を有しており、このタンク２の軸方向両端部
、即ち上端部と下端部とを、凸型の半球状に底形されて
いる。そして、アキュムレータ１は、タンク２の上端部
に人口管７を接続されており、人目管７の吐出ロアａを
タンク２の略袖心上に位置させている。This accumulator 1 has an airtight cylindrical container-shaped tank 2, and both axial ends of the tank 2, that is, the upper end and the lower end, have a convex hemispherical bottom. ing. The accumulator 1 has an artificial pipe 7 connected to the upper end of the tank 2, and the discharge lower a of the artificial pipe 7 is positioned substantially above the sleeve center of the tank 2.

そして、アキュムレータ１は、図示し、なＬＸ蒸発器か
ら送り出されたガス冷媒、および、圧縮機の潤滑等を行
うとともにガス冷媒と混合した油等を、矢印Ｂて示すよ
うに人口管７に流通させ、人口管７からタンク２の内部
に吐出するよう書こなっても）る。The accumulator 1 distributes the gas refrigerant sent out from the LX evaporator shown in the figure, as well as the oil that lubricates the compressor and mixes with the gas refrigerant, to the artificial pipe 7 as shown by arrow B. (Even if it is written so that it is discharged from the artificial pipe 7 into the inside of the tank 2).

また、アキュムレータ１には出口管８が設けられている
。この出口管８はタンク２に下側力）ら差し込まれてお
り、タンク２内に入り込んだ部分を、タンク２の軸心に
沿うよう上方へ直線的に延ばしている。さらに、出口管
８はその吸込口８ａを上記人口管７の吐出ロアａに下方
から対向させている。Further, the accumulator 1 is provided with an outlet pipe 8. This outlet pipe 8 is inserted into the tank 2 from below, and the part that enters the tank 2 is linearly extended upward along the axis of the tank 2. Furthermore, the outlet pipe 8 has its suction port 8a facing the discharge lower a of the artificial pipe 7 from below.

そして、出口管８は入口管７との間に、タンク２の内壁
に固定されたメツシュ状のフィルタ９を介在させており
、人口管７から吐出され哉フィルタ９を通過したガス冷
媒をその内部に吸込むようになっている。そして、出口
管８は、吸込んだガス冷媒を、図中に矢印Ｃで示すよう
に上記圧縮機の側へ導き、圧縮機の例えばシリンダ内に
ガス冷媒を供給する。A mesh-like filter 9 fixed to the inner wall of the tank 2 is interposed between the outlet pipe 8 and the inlet pipe 7. It is designed to be inhaled. Then, the outlet pipe 8 guides the sucked gas refrigerant toward the compressor as shown by arrow C in the figure, and supplies the gas refrigerant into, for example, a cylinder of the compressor.

さらに、出口管８には、それぞれがタンク２の内部に位
置する２つの油戻し孔１０，１１が設けられている。こ
の油戻し孔１０．１１は略同−直線上に配置されており
、互いに上下に離間している。さらに、両油戻し孔１０
．１１は、それぞれの形状を真円状に設定されており、
下側の油戻し孔１０の開口面積を上側の油戻し孔１１の
開口面積よりも小さく設定されている。そして、両油戻
し孔１０．１１は互いの開口面積の比を、１　：　１．
５に設定されている。Furthermore, the outlet pipe 8 is provided with two oil return holes 10 and 11, each located inside the tank 2. The oil return holes 10.11 are arranged substantially on the same straight line and are vertically spaced apart from each other. Furthermore, both oil return holes 10
．． 11, each shape is set as a perfect circle,
The opening area of the lower oil return hole 10 is set smaller than the opening area of the upper oil return hole 11. The opening areas of both oil return holes 10 and 11 are set at a ratio of 1:1.
It is set to 5.

また、両油戻し孔１０．１１のうち下側の油戻し孔ｌＯ
は、タンク２の底面６ａの近傍の部位に位置している。Also, the lower oil return hole lO of both oil return holes 10.11
is located near the bottom surface 6a of the tank 2.

そして、この下側の油戻し孔１０は、タンク２の底部６
に溜まった油等を通過させて出口管８内に流入させるよ
うになっている。ここで、下側の油戻し孔１１はその直
径を、例えば１．０′〜１，５′に設定されている。This lower oil return hole 10 is located at the bottom 6 of the tank 2.
The oil and the like accumulated in the outlet pipe 8 are allowed to pass therethrough and flow into the outlet pipe 8. Here, the diameter of the lower oil return hole 11 is set to, for example, 1.0' to 1.5'.

一方、上側の油戻し孔１１は出口管８の、タンク２内に
突出した部分の軸方向略中間の部位に位置している。そ
して、この上側の肺戻し孔１１は、タンク２の軸方向全
長りを基準とした高さをＤ／３に設定されており、さら
に、出口管６の、タンク２内での突出量Ｅを基準とした
高さを、Ｅ／２に設定されている。On the other hand, the upper oil return hole 11 is located approximately in the middle of the portion of the outlet pipe 8 that protrudes into the tank 2 in the axial direction. The height of this upper lung return hole 11 is set to D/3 based on the entire length of the tank 2 in the axial direction, and the height E of the outlet pipe 6 within the tank 2 is set to be D/3. The reference height is set to E/2.

すなわち、このようなアキュムレータ１では、下側の油
戻し孔１１の開口面積を上側の油戻し孔１２の開口面積
よりも小とし、下側の油戻し孔１１の直径を例えば１．
０−〜１．５１としているので、冷凍サイクルの通常運
転時には、冷凍サイクルを一巡してタンク２に流入し底
部６に溜った浦を下側の油戻し孔１０から出口管８に流
すことができ、圧縮機の潤滑等に十分な量の油を圧縮機
に確実に戻すことができる。That is, in such an accumulator 1, the opening area of the lower oil return hole 11 is made smaller than the opening area of the upper oil return hole 12, and the diameter of the lower oil return hole 11 is, for example, 1.
0- to 1.51, so that during normal operation of the refrigeration cycle, the oil that flows through the refrigeration cycle, flows into the tank 2, and accumulates in the bottom 6 can flow from the lower oil return hole 10 to the outlet pipe 8. This makes it possible to reliably return a sufficient amount of oil to the compressor for lubrication, etc. of the compressor.

また、冷凍サイクルの通常運転時においても、完全に気
化しないままタンク２に流入した微量の液冷媒がタンク
２内に溜まることがあるが、このような場合でも、開口
面積の小さな下側の油戻し孔１０によって、出口管８内
へ流入する液冷媒を更に少量に抑制することができる。Also, even during normal operation of the refrigeration cycle, a small amount of liquid refrigerant that has flowed into tank 2 without being completely vaporized may accumulate in tank 2, but even in such cases, the oil in the lower part of the tank, which has a small opening area, The return hole 10 can further suppress the amount of liquid refrigerant flowing into the outlet pipe 8 to a smaller amount.

そして、アキュムレータ１から急激に流れ込んだ過大な
量の液冷媒を原因とする、圧縮機のダメージの発生を防
止することができる。It is also possible to prevent damage to the compressor caused by an excessive amount of liquid refrigerant that has suddenly flowed in from the accumulator 1.

さらに、冷凍サイクルが不安定な状態にあるとき、即ち
起動直後や除霜運転時等には、通常運転時よりも多量の
液冷媒が生じこの液冷媒がタンク２内に流入することが
あるが、下側の油戻し孔１０の開口面積を十分に小さく
設定しているので、液冷媒の、下側の油戻し孔１０から
出口管８への流入量を、タンク２への流入量に比べて大
幅に小とすることができる。Furthermore, when the refrigeration cycle is in an unstable state, such as immediately after startup or during defrosting operation, a larger amount of liquid refrigerant may be generated than during normal operation, and this liquid refrigerant may flow into the tank 2. Since the opening area of the lower oil return hole 10 is set sufficiently small, the amount of liquid refrigerant flowing into the outlet pipe 8 from the lower oil return hole 10 is smaller than the amount flowing into the tank 2. can be made significantly smaller.

したがって、圧縮機へ過大な量の液冷媒が戻ること（液
バツク）を原因とする圧縮負荷の増大を防止することが
できる。さらに、過大な量の液冷媒が連続的に圧縮機へ
流入することによる、圧縮機の温度低下、および、圧縮
機中の潤滑油の過冷却等を防止できる。そして、圧縮機
中の高圧なガス冷媒が過冷却された潤滑油に接して液化
し潤滑油と混合することを原因とする、潤滑油の潤滑特
性の低下を防止できる。Therefore, it is possible to prevent an increase in compression load due to an excessive amount of liquid refrigerant returning to the compressor (liquid back). Further, it is possible to prevent the temperature of the compressor from decreasing and the lubricating oil in the compressor from being overcooled due to an excessive amount of liquid refrigerant continuously flowing into the compressor. In addition, it is possible to prevent the lubricating properties of the lubricating oil from deteriorating due to the high-pressure gas refrigerant in the compressor coming into contact with the supercooled lubricating oil, liquefying it, and mixing with the lubricating oil.

さらに、上側の油戻し孔１１を下側の油戻し孔１０に対
して上方へ十分に離間させるとともに、上側の油戻し孔
１１の高さを、タンク２の全長りを基準としてＤ／３に
設定しているので、タンク２に蒲まった液冷媒が量を増
し、液面がタンク２内を上昇して上側の油戻し孔１１に
達するまでの間、即ち、タンク２内にタンク２の全容量
の約１／３の体積の液冷媒が瑠るまでの間において、圧
縮機へ向かう液冷媒を少量に抑制することができる。Furthermore, the upper oil return hole 11 is sufficiently spaced upward from the lower oil return hole 10, and the height of the upper oil return hole 11 is set to D/3 based on the entire length of the tank 2. Since the liquid refrigerant in the tank 2 increases in volume and the liquid level rises in the tank 2 until it reaches the upper oil return hole 11, that is, the amount of liquid refrigerant in the tank 2 increases. Until the liquid refrigerant reaches a volume of about 1/3 of the total capacity, the amount of liquid refrigerant flowing to the compressor can be suppressed to a small amount.

また、急激に大息の液冷媒がタンク２内に流入すると、
液冷媒か上側の油戻し孔１１を越えることがあり、この
ような場合、液冷媒は出口管８へ、吸込口８ａからガス
冷媒と混合した状態で流入し、タンク２の外部へ流出す
る。しかし、このような現象が生じることは極めて希で
あり、圧縮機へ加わるダメージは少ない。Also, if a large amount of liquid refrigerant suddenly flows into tank 2,
The liquid refrigerant may exceed the upper oil return hole 11, and in such a case, the liquid refrigerant flows into the outlet pipe 8 from the suction port 8a in a state mixed with the gas refrigerant, and flows out of the tank 2. However, such a phenomenon is extremely rare and causes little damage to the compressor.

また、入口管７を介してタンク２に流入する油の量が下
側の油戻し孔１０を通過してタンク２の外部に流出する
浦の量よりも多い場合には、タンク２の内部に油が滞留
するが、上側の油戻し孔１１を、タンク２の全長りを基
準としたＤ／３の高さに設けているので、タンク２に滞
留する油の量は、常にタンク２の全容量の１７３以下と
なる。In addition, if the amount of oil flowing into the tank 2 via the inlet pipe 7 is larger than the amount flowing out to the outside of the tank 2 through the lower oil return hole 10, the inside of the tank 2 Oil will accumulate, but since the upper oil return hole 11 is provided at a height of D/3 based on the entire length of tank 2, the amount of oil remaining in tank 2 will always exceed the entire length of tank 2. The capacity will be 173 or less.

したがって、常に十分な量の油を圧縮機に供給すること
ができ、圧縮機中の潤滑油を不足させることがない。Therefore, a sufficient amount of oil can always be supplied to the compressor, and there is no shortage of lubricating oil in the compressor.

なお、本発明のアキュムレータは、例えばロータリ式や
スクロール式等の種々のタイプの圧縮機に接続ｉｒＪ能
である。The accumulator of the present invention can be connected to various types of compressors, such as rotary type and scroll type.

［発明の効果］ 以上説明したように本発明は、冷媒と油とをその山部に
流入させるタンクと、このタンクに下側から葦込まれ上
記タンク内で上方に延び、冷媒と浦とをその内部に流通
させてタンクの外部へ導く出口管と、この出口管に上下
に配設され、下側に位置するものの開口面積を上側に位
置するものの開口面積よりも小とするとともに、互いの
開口ｉＩｊ積の比を１．：１．４以上に設定された２つ
の油戻し孔とを備えたものである。[Effects of the Invention] As explained above, the present invention includes a tank that allows refrigerant and oil to flow into the mountain portion thereof, and a reed that is inserted into this tank from below and extends upward within the tank to connect the refrigerant and oil. An outlet pipe that leads the flow inside the tank to the outside of the tank, and an outlet pipe that is arranged above and below this outlet pipe, and the opening area of the one located on the lower side is smaller than that of the one located on the upper side, and The ratio of the aperture iIj product is 1. : Equipped with two oil return holes set at 1.4 or higher.

したがって本発明は、十分な量の浦を圧縮機に戻ながら
圧縮機に流入する岐冷媒の量を低減できるという効果が
ある。Therefore, the present invention has the effect of being able to reduce the amount of branch refrigerant flowing into the compressor while returning a sufficient amount of the refrigerant to the compressor.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の一実施例を示す断面図、第２図は従来
例を示すもので、圧縮機に接続された状態の新曲−であ
る。 １・・・アキュムレータ、２・・・タンク、８・・・出
口管、１０・・・Ｆ側の油戻し孔、１１・・・上側の油
戻し孔。FIG. 1 is a sectional view showing one embodiment of the present invention, and FIG. 2 is a conventional example, which is a new version connected to a compressor. DESCRIPTION OF SYMBOLS 1...Accumulator, 2...Tank, 8...Outlet pipe, 10...F side oil return hole, 11...Upper oil return hole.

Claims (1)

【特許請求の範囲】[Claims] 冷媒と油とをその内部に流入させるタンクと、このタン
クに下側から差込まれ上記タンク内で上方に延び上記冷
媒と上記油とをその内部に流通させて上記タンクの外部
へ導く出口管と、この出口管に上下に配設され、下側に
位置するものの開口面積を上側に位置するものの開口面
積よりも小とするとともに、互いの開口面積の比を１：
１．４以上に設定された２つの油戻し孔とを具備したア
キュムレータ。A tank into which the refrigerant and oil flow, and an outlet pipe inserted into the tank from below and extending upward within the tank to flow the refrigerant and oil into the tank and lead it to the outside of the tank. The outlet pipes are arranged above and below the outlet pipe, and the opening area of the lower one is smaller than that of the upper one, and the ratio of the opening areas of the two is set to 1:
An accumulator equipped with two oil return holes set at 1.4 or higher.
JP3270090A 1990-02-14 1990-02-14 Accumulator Pending JPH03236568A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3270090A JPH03236568A (en) 1990-02-14 1990-02-14 Accumulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3270090A JPH03236568A (en) 1990-02-14 1990-02-14 Accumulator

Publications (1)

Publication Number Publication Date
JPH03236568A true JPH03236568A (en) 1991-10-22

Family

ID=12366130

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3270090A Pending JPH03236568A (en) 1990-02-14 1990-02-14 Accumulator

Country Status (1)

Country Link
JP (1) JPH03236568A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5355695A (en) * 1992-11-30 1994-10-18 Mitsubishi Denki Kabushiki Kaisha Refrigeration device using hydrofluorocarbon refrigerant
US5419144A (en) * 1992-11-30 1995-05-30 Mitsubishi Denki Kabushiki Kaisha Refrigeration device using hydrofluorocarbon refrigerant
JP2010203733A (en) * 2009-03-05 2010-09-16 Hitachi Appliances Inc Air conditioning device
KR101322518B1 (en) * 2007-07-31 2013-10-25 엘지전자 주식회사 Two stage rotary compressor set

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5355695A (en) * 1992-11-30 1994-10-18 Mitsubishi Denki Kabushiki Kaisha Refrigeration device using hydrofluorocarbon refrigerant
US5419144A (en) * 1992-11-30 1995-05-30 Mitsubishi Denki Kabushiki Kaisha Refrigeration device using hydrofluorocarbon refrigerant
KR101322518B1 (en) * 2007-07-31 2013-10-25 엘지전자 주식회사 Two stage rotary compressor set
JP2010203733A (en) * 2009-03-05 2010-09-16 Hitachi Appliances Inc Air conditioning device

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