JPH0539409Y2 - - Google Patents
Info
- Publication number
- JPH0539409Y2 JPH0539409Y2 JP1449588U JP1449588U JPH0539409Y2 JP H0539409 Y2 JPH0539409 Y2 JP H0539409Y2 JP 1449588 U JP1449588 U JP 1449588U JP 1449588 U JP1449588 U JP 1449588U JP H0539409 Y2 JPH0539409 Y2 JP H0539409Y2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- container
- compressor
- oil return
- height
- 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.)
- Expired - Lifetime
Links
- 239000003507 refrigerant Substances 0.000 claims description 45
- 239000007788 liquid Substances 0.000 claims description 37
- 238000005461 lubrication Methods 0.000 claims description 11
- 238000005057 refrigeration Methods 0.000 claims description 11
- 238000000926 separation method Methods 0.000 claims description 4
- 239000003921 oil Substances 0.000 description 118
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Compressor (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Description
【考案の詳細な説明】
(産業上の利用分野)
本考案は冷凍装置におけるアキユムレータ、詳
しくは圧縮機、凝縮器、膨張機構及び蒸発器を冷
媒配管を介して接続して成る冷凍装置における前
記圧縮機の吸入側に介装されて、冷媒の気液分離
を行うようにした冷凍装置におけるアキユムレー
タに関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an accumulator in a refrigeration system, and more specifically, the present invention relates to an accumulator in a refrigeration system, and more specifically, a compressor in a refrigeration system in which a compressor, a condenser, an expansion mechanism, and an evaporator are connected via refrigerant piping. The present invention relates to an accumulator in a refrigeration system that is installed on the suction side of a refrigerant and performs gas-liquid separation of refrigerant.
(従来の技術)
一般に、冷凍装置における圧縮機の吸入側に介
装されて、冷媒の気液分離を行うアキユムレータ
は、実公昭51−28700号公報に示され、また、第
3図に示したごとくアキユムレータ本体容器Aの
内方上部に、蒸発器からの冷媒を前記アキユムレ
ータ本体容器A内に導く入口管Bを開口させると
共に、前記アキユムレータ本体容器A内の冷媒を
圧縮機へ導く出口管Dを前記容器Aの内方底部近
くを通り該容器Aの内方上部に開口させる一方、
前記容器Aの底部近くに位置する前記出口管Dの
管壁に第1油戻し孔Eを開設すると共に、この油
戻し孔Eより高位に位置する前記出口管Dの管壁
に間隔をおいて第2油戻し孔Fを開設している。(Prior art) Generally, an accumulator that is installed on the suction side of a compressor in a refrigeration system and performs gas-liquid separation of refrigerant is shown in Japanese Utility Model Publication No. 51-28700, and is shown in Fig. 3. An inlet pipe B for guiding the refrigerant from the evaporator into the accumulator body container A is opened at the inner upper part of the accumulator main body container A, and an outlet pipe D for guiding the refrigerant in the accumulator main body container A to the compressor is opened. Passing near the inner bottom of the container A and opening at the inner top of the container A,
A first oil return hole E is provided in the wall of the outlet pipe D located near the bottom of the container A, and a first oil return hole E is provided at a distance in the wall of the outlet pipe D located higher than the oil return hole E. A second oil return hole F has been opened.
このようにして、これら第1及び第2油戻し孔
E,Fから、前記容器Aに溜る油を液冷媒と一緒
に前記出口管Dに流入させて、前記圧縮機に供給
し、該圧縮機における油量の減少を補つている。
このとき、前記出口管Dに流入する液冷媒は、一
般に前記出口管D内で蒸発して、ガス冷媒となり
前記圧縮機に吸入されるのである。 In this way, the oil accumulated in the container A flows from the first and second oil return holes E and F into the outlet pipe D together with the liquid refrigerant, and is supplied to the compressor. This compensates for the decrease in oil volume.
At this time, the liquid refrigerant flowing into the outlet pipe D generally evaporates within the outlet pipe D to become a gas refrigerant and is sucked into the compressor.
(考案が解決しようとする課題)
ところで、前記容器A内に貯溜される液冷媒が
少ないときは、前記容器Aの下部に溜る油は、前
記第1油戻し孔Eより前記出口管Dを通つて前記
圧縮機に戻される。また、液冷媒が前記容器A内
にさらに貯溜されるときには、比重の関係で油が
前記液冷媒の上方に位置することから、油面高さ
が前記第1油戻し孔Eより上方に位置する場合に
は第2油戻し孔Fより油が前記出口管Dに入つ
て、前記圧縮機に戻されることになる。(Problem to be Solved by the Invention) By the way, when there is little liquid refrigerant stored in the container A, the oil collected in the lower part of the container A passes through the outlet pipe D from the first oil return hole E. It is then returned to the compressor. Furthermore, when the liquid refrigerant is further stored in the container A, the oil is located above the liquid refrigerant due to its specific gravity, so that the oil level is located above the first oil return hole E. In this case, oil enters the outlet pipe D from the second oil return hole F and is returned to the compressor.
ところが、前記第2油戻し孔Fと第1油戻し孔
Eとの間隔の大きさによつては、油が圧縮機に戻
らないことが生じるのである。即ち、圧縮機内の
油量が潤滑に必要な最小油量となつたとき、前記
容器A内においては、液冷媒の上に溜る油の量が
最大量となつており、この時、前記容器A内の油
層高さより、前記各孔E,Fの間の間隔が大きい
場合には、前記液冷媒の液面が前記第1油戻し孔
Eの上縁直上方に位置しているとき、前記油層の
上面が前記第2油戻し孔Fよりも下方に位置して
しまうときが生じ、斯くするときには、前記容器
A内に貯溜されている油が前記圧縮機に戻ること
はないのである。 However, depending on the size of the interval between the second oil return hole F and the first oil return hole E, the oil may not return to the compressor. That is, when the amount of oil in the compressor reaches the minimum oil amount necessary for lubrication, the amount of oil accumulated on top of the liquid refrigerant in the container A becomes the maximum amount, and at this time, the amount of oil accumulated on the liquid refrigerant in the container A becomes the maximum amount. When the distance between the holes E and F is greater than the height of the oil layer in the oil layer, when the liquid level of the liquid refrigerant is located directly above the upper edge of the first oil return hole E, the oil layer There are times when the upper surface of the container A is located below the second oil return hole F, and in such a case, the oil stored in the container A does not return to the compressor.
このとき、前記圧縮機の油の量は、前記圧縮機
の潤滑に必要な最小油量であるから、前記圧縮機
に油戻りがなくなることにより、油不足となつて
前記圧縮機の運転に支障を招く問題が生ずるので
ある。 At this time, since the amount of oil in the compressor is the minimum amount of oil necessary for lubrication of the compressor, no oil returns to the compressor, resulting in an oil shortage that hinders the operation of the compressor. A problem arises that leads to
尚、前記した従来例を示す広告公報には、前記
第2油戻し孔Fを複数個設けてもよい旨の記載が
あるが、複数個設ける場合の各第2油戻し孔F…
の間隔については全く考慮されていないのであ
る。しかして、前記した問題点を解決するため
に、前記第2油戻し孔F…を複数個設けると共
に、それらの間隔を小さくしたりすることが考え
られるが、前記間隔が小さくなり過ぎると、液冷
媒が多量に前記出口管D内に流入し、前記出口管
D内で蒸発し切れずに、一部が液体のまま前記圧
縮機に吸入されて前記圧縮機の液圧縮を招く問題
が生ずるのである。 Incidentally, in the above-mentioned advertisement gazette showing the conventional example, there is a description that a plurality of the second oil return holes F may be provided, but in the case where a plurality of second oil return holes F are provided, each second oil return hole F...
The interval between them is not considered at all. In order to solve the above-mentioned problems, it is conceivable to provide a plurality of the second oil return holes F and to reduce the interval between them. However, if the interval becomes too small, the liquid A problem arises in that a large amount of refrigerant flows into the outlet pipe D and is not completely evaporated in the outlet pipe D, and a part of the refrigerant is sucked into the compressor as a liquid, causing liquid compression in the compressor. be.
本考案は、以上の問題に鑑みて考案したもの
で、その目的は、圧縮機の液圧縮を招くことな
く、圧縮機内の油量が最小油量となつたときに、
該圧縮機に確実に油戻しを行えるようにして、圧
縮機の焼損を防ぐことにある。 The present invention was devised in view of the above problems, and its purpose is to reduce the amount of oil in the compressor when the amount of oil in the compressor reaches the minimum amount without causing liquid compression in the compressor.
To prevent burnout of the compressor by ensuring that oil can be returned to the compressor.
(課題を解決するための手段)
しかして、本考案は、上記目的を達成するため
に、圧縮機1、凝縮器2、膨張機構3及び蒸発器
4を冷媒配管を介して接続して成る冷凍装置にお
ける前記圧縮機1の吸入側に介装されて、冷媒の
気液分離を行うようにしたアキユムレータであつ
て、アキユムレータ本体容器6の内方上部に、入
口管7を開口させると共に、出口管8を前記容器
6の上部から内方底部近くを通り該容器6の内方
上部に開口させる一方、前記容器6の底部近くに
位置する前記出口管8の管壁に、油戻し孔9を開
設すると共に、この油戻し孔9より高位に位置す
る前記出口管8の管壁に、前記圧縮機1に充填可
能な最大油量と該圧縮機1の潤滑に必要な最小油
量との差Cを前記容器6の横断面積mで除して得
られる前記容器6内に溜る油の最大油層高さL=
C/mにほぼ等しい間隔で、複数の補助油戻し孔
10…を開設し、かつ、前記油戻し孔9から最上
位に位置する前記補助油戻し孔10までの高さ
H2を、最大冷媒量Vを前記横断面積mで除した
高さH1=V/mより高く、かつ、該高さH1に前
記容器6内における前記最大油層高さLを加算し
た高さH1+Lより低い範囲内に設定して、前記
各補助油戻し孔10…の個数を、前記油戻し孔9
から最上位に位置する前記補助油戻し孔10まで
の高さH2を前記最大油層高さLで除した個数n
=H2/Lとしたのである。(Means for Solving the Problems) Therefore, in order to achieve the above object, the present invention provides a refrigerator comprising a compressor 1, a condenser 2, an expansion mechanism 3, and an evaporator 4 connected via refrigerant piping. This is an accumulator that is installed on the suction side of the compressor 1 in the apparatus to perform gas-liquid separation of the refrigerant, and has an inlet pipe 7 opened at the inner upper part of the accumulator main body container 6, and an outlet pipe 7. 8 is passed from the top of the container 6 near the inner bottom and opened to the inner top of the container 6, while an oil return hole 9 is opened in the pipe wall of the outlet pipe 8 located near the bottom of the container 6. At the same time, a difference C between the maximum amount of oil that can be filled into the compressor 1 and the minimum amount of oil required to lubricate the compressor 1 is recorded on the wall of the outlet pipe 8 located higher than the oil return hole 9. Maximum oil layer height L of oil accumulated in the container 6 obtained by dividing by the cross-sectional area m of the container 6 =
A plurality of auxiliary oil return holes 10 are opened at intervals approximately equal to C/m, and the height from the oil return hole 9 to the auxiliary oil return hole 10 located at the highest position.
H 2 is higher than the height H 1 = V/m obtained by dividing the maximum refrigerant amount V by the cross-sectional area m, and the height obtained by adding the maximum oil layer height L in the container 6 to the height H 1 The number of each of the auxiliary oil return holes 10 is set within a range lower than H 1 +L.
The number n obtained by dividing the height H2 from to the auxiliary oil return hole 10 located at the top by the maximum oil layer height L
=H 2 /L.
(作用)
前記圧縮機1内の油量が最小油量となるときの
前記アキユムレータ本体容器6内の油量に基づい
て設定した間隔で、前記補助油戻し孔10…を前
記出口管8の管壁に、前記油戻し孔9から最上位
に位置する前記補助油戻し孔10までの高さH2
を前記最大油層高さLで除した個数n=H2/L
だけ開設しているから、前記アキユムレータ本体
容器6内に貯溜される液冷媒の液面高さの如何に
拘らず、液冷媒の圧縮機1への戻りをなくしなが
ら、前記圧縮機1における油の量が該圧縮機1の
潤滑に必要な最小油量となつたときには、確実に
前記アキユムレータ本体容器6内の油を前記圧縮
機1へと戻すことができるのである。即ち、前記
最小油量以下になる以前に、複数の前記補助油戻
し孔10の何れかから必ず油が前記圧縮機1に戻
されるのである。(Function) The auxiliary oil return holes 10 are connected to the outlet pipe 8 at intervals set based on the amount of oil in the accumulator body container 6 when the amount of oil in the compressor 1 reaches the minimum oil amount. A height H 2 on the wall from the oil return hole 9 to the auxiliary oil return hole 10 located at the highest level.
Number n = H 2 /L divided by the maximum oil layer height L
Therefore, regardless of the liquid level of the liquid refrigerant stored in the accumulator body container 6, the oil in the compressor 1 can be maintained while preventing the liquid refrigerant from returning to the compressor 1. When the amount of oil reaches the minimum amount required for lubrication of the compressor 1, the oil in the accumulator main body container 6 can be reliably returned to the compressor 1. That is, oil is always returned to the compressor 1 from any one of the plurality of auxiliary oil return holes 10 before the oil amount becomes less than the minimum oil amount.
(実施例)
第2図に示した冷凍装置は、圧縮機1と、該圧
縮機1の吐出側に接続される凝縮器2と膨張弁よ
りなる膨張機構3及び蒸発器4とを備え、これら
各機器を冷凍配管を介して接続して構成してい
る。また、前記圧縮機1の吸入側には、本考案に
係るアキユムレータを接続している。(Example) The refrigeration system shown in FIG. 2 includes a compressor 1, an expansion mechanism 3 consisting of a condenser 2 and an expansion valve connected to the discharge side of the compressor 1, and an evaporator 4. Each device is connected via refrigeration piping. Further, an accumulator according to the present invention is connected to the suction side of the compressor 1.
次に、本考案のアキユムレータの実施例を第1
図に基づいて説明する。 Next, a first embodiment of the accumulator of the present invention will be described.
This will be explained based on the diagram.
第1図に示したアキユムレータは、密閉状で、
かつ、円筒形をなすアキユムレータ本体容器6
と、該本体容器6の内方上部に開口され、前記蒸
発器4からアキユムレータ本体容器6内に冷媒を
導く入口管7と、該容器6の内方上方より底部近
くを湾曲して上部に開口し、前記容器6内で気液
分離されたガス冷媒を前記圧縮機1に導く出口管
8とにより構成している。そして、前記容器6の
底部近くに位置する前記出口管8の管壁に、油戻
し孔9を開設すると共に、該油戻し孔9より高位
に位置する管壁に、複数の補助油戻し孔10…
を、前記出口管8の長さ方向つまり高さ方向に次
に述べる間隔で開設するのである。 The accumulator shown in Fig. 1 is a closed type,
and an accumulator main body container 6 having a cylindrical shape.
an inlet pipe 7 which is opened at the inner upper part of the main body container 6 and leads the refrigerant from the evaporator 4 into the accumulator main body container 6; and an outlet pipe 8 for guiding the gas refrigerant separated into gas and liquid in the container 6 to the compressor 1. An oil return hole 9 is formed in the pipe wall of the outlet pipe 8 located near the bottom of the container 6, and a plurality of auxiliary oil return holes 10 are provided in the pipe wall located at a higher level than the oil return hole 9. …
are opened in the length direction, that is, the height direction, of the outlet pipe 8 at the intervals described below.
即ち、前記圧縮機1に充填可能な最大油量と該
圧縮機1の潤滑に必要な最小油量との差Cに相当
する油量が、前記容器6に貯溜される油量の最大
であり、また、この最大油量に対応する前記容器
6内での油層高さLを、前記最大油量を前記容器
6の横断面積mで除算L=C/mして算出し、前
記補助油戻し孔10…の間隔を前記最大油層高さ
Lにほぼ等しくするのである。 That is, the amount of oil corresponding to the difference C between the maximum amount of oil that can be filled into the compressor 1 and the minimum amount of oil necessary for lubrication of the compressor 1 is the maximum amount of oil that can be stored in the container 6. In addition, the height L of the oil layer in the container 6 corresponding to this maximum oil amount is calculated by dividing the maximum oil amount by the cross-sectional area m of the container 6, L=C/m, and The distance between the holes 10 is made approximately equal to the maximum oil layer height L.
また、前記出口管8の管壁に開設する前記補助
油戻し孔10…の必要数を次のようにして決める
のである。 Further, the required number of the auxiliary oil return holes 10 to be opened in the wall of the outlet pipe 8 is determined as follows.
前記容器6内に溜る最大冷媒量Vは、冷房・暖
房各運転時における前記冷凍装置全体における最
大冷媒循環量と最小冷媒循環量との差であるか
ら、前記容器6内におけ最大冷媒量Vに対応する
液層高さH1は、最大冷媒量Vを前記容器6の横
断面積mで除算V/mして算出し、一方、最上位
に位置する前記補助油戻し孔10の前記油戻し孔
9からの高さH2を、前記液層高さH1より高く、
かつ、前記液層高さH1に前記補助油戻し孔10
の間隔、即ち、前記最大油層Lを加算した高さ
H1+Lより低い範囲内H1<H2<H1+Lに設定
し、その上で、前記補助油戻し孔10…の個数n
を、n=H2/Lにより算出するのである。 The maximum refrigerant amount V accumulated in the container 6 is the difference between the maximum refrigerant circulation amount and the minimum refrigerant circulation amount in the entire refrigeration system during cooling and heating operations, so the maximum refrigerant amount V in the container 6 is The liquid layer height H 1 corresponding to is calculated by dividing the maximum refrigerant amount V by the cross-sectional area m of the container 6 V/m. The height H2 from the hole 9 is higher than the liquid layer height H1 ,
and the auxiliary oil return hole 10 is located at the liquid layer height H1 .
interval, that is, the height of the sum of the maximum oil layer L
H 1 < H 2 <H 1 +L within a range lower than H 1 +L, and then the number n of the auxiliary oil return holes 10...
is calculated by n=H 2 /L.
このようにして、前記冷凍装置に応じた所要数
の前記補助油戻し孔10…を、前記油戻し孔9よ
り高位に位置する前記出口管8の管壁に、前記圧
縮機1の潤滑に必要な最小油量を考慮して設定さ
れた間隔をおいて、前記容器6内の液冷媒量が前
記最大冷媒量Vとなつた時に対応できる高さH2
に至るまで開設しているから、前記アキユムレー
タ本体容器6内に貯溜される液冷媒の上方に溜る
油の量が前記圧縮機1の最大油量と最小油量との
差に相当する油量に近づくと、前記容器6内の液
冷媒の液面高さの如何に拘らず、前記圧縮機1に
おける油の量が該圧縮機1の潤滑に必要な最小油
量となつたときに、確実に前記アキユムレータ本
体容器6内の油を前記圧縮機1へと戻すことがで
きるので、前記圧縮機1の油上がりを確実に防止
でき、従つて、潤滑油が不足して前記圧縮機1の
運転に支障を招くことはないのである。 In this way, a required number of auxiliary oil return holes 10 corresponding to the refrigeration system are provided in the wall of the outlet pipe 8 located at a higher level than the oil return holes 9 necessary for lubrication of the compressor 1. height H 2 that can be accommodated when the liquid refrigerant amount in the container 6 reaches the maximum refrigerant amount V at intervals set in consideration of the minimum oil amount.
, the amount of oil accumulated above the liquid refrigerant stored in the accumulator main body container 6 is equal to the difference between the maximum oil amount and the minimum oil amount of the compressor 1. When approaching, regardless of the liquid level height of the liquid refrigerant in the container 6, when the amount of oil in the compressor 1 reaches the minimum amount of oil necessary for lubrication of the compressor 1, Since the oil in the accumulator main body container 6 can be returned to the compressor 1, it is possible to reliably prevent oil from rising in the compressor 1, and therefore prevent the operation of the compressor 1 due to lack of lubricating oil. It will not cause any trouble.
しかも、前記出口管8の管壁に開設した前記補
助油戻し孔10…は、その間隔を前記最大油層高
さLに設定すると共に、その個数を前記油戻し孔
9から前記最大油層高さLごとに、前記容器6内
の液冷媒量が前記最大冷媒量Vとなつた時に対応
できる高さH2に至るまで開設して、前記圧縮機
1の潤滑に必要な最小油量を確保するために必要
な最小限の数にしているので、前記圧縮機1にお
ける油の量が該圧縮機1の潤滑に必要な最小油量
となつたときには確実に前記アキユムレータ本体
容器6内の油を前記圧縮機1へ戻せながら、前記
出口管8内に流入する液冷媒の量が最小限に抑え
られ、前記圧縮機1の液圧縮を防止できるのであ
る。 Moreover, the auxiliary oil return holes 10 formed in the wall of the outlet pipe 8 are set at intervals equal to the maximum oil layer height L, and the number of them is increased from the oil return hole 9 to the maximum oil layer height L. In order to secure the minimum amount of oil necessary for lubrication of the compressor 1 by opening up to a height H 2 that can correspond to when the amount of liquid refrigerant in the container 6 reaches the maximum amount V of refrigerant. Therefore, when the amount of oil in the compressor 1 reaches the minimum amount necessary for lubrication of the compressor 1, the oil in the accumulator body container 6 is reliably compressed. While the liquid refrigerant can be returned to the compressor 1, the amount of liquid refrigerant flowing into the outlet pipe 8 can be minimized, and liquid compression in the compressor 1 can be prevented.
(考案の効果)
以上のごとく本考案は、アキユムレータ本体容
器6の内方上部に、入口管7を開口させると共
に、出口管8を前記容器6の上部から内方底部近
くを通り該容器6の内方上部に開口させる一方、
前記容器6の底部近くに位置する前記出口管8の
管壁に、油戻し孔9を開設すると共に、この油戻
し孔9より高位に位置する前記出口管8の管壁
に、前記圧縮機1に充填可能な最大油量と該圧縮
機1の潤滑に必要な最小油量との差Cを前記容器
6の横断面積mで除して得られる前記容器6内に
溜る油の最大油層高さL=C/mにほぼ等しい間
隔で、複数の補助油戻し孔10…を開設し、か
つ、前記油戻し孔9から最上位に位置する前記補
助油戻し孔10までの高さH2を、最大冷媒量V
を前記横断面積mで除した高さH1=V/mより
高く、かつ、該高さH1に前記容器6内における
前記最大油層高さLを加算した高さH1+Lより
低い範囲内に設定して、前記各補助油戻し孔10
…の個数を、前記油戻し孔9から最上位に位置す
る前記補助油戻し孔10までの高さH2を前記最
大油層高さLで除した個数(n=H2/L)とし
たから、前記アキユムレータ本体容器6内に貯溜
される液冷媒の液面高さの如何に拘らず、液冷媒
の圧縮機1への戻りをなくしながら、前記圧縮機
1における油の量が該圧縮機1の潤滑に必要な最
小油量以下にならないように、前記アキユムレー
タ本体容器6内の油を前記圧縮機1へと戻すこと
ができるのである。従つて、前記圧縮機1におけ
る潤滑油の油切れを防止し、しかも、必要最小限
の数の前記補助油戻し孔10を設けているから、
液冷媒による前記圧縮機1の液圧縮も防止できる
のである。(Effects of the invention) As described above, the present invention allows the inlet pipe 7 to be opened at the inner upper part of the main body container 6 of the accumulator, and the outlet pipe 8 to be passed from the upper part of the container 6 to near the inner bottom of the container 6. While opening inward at the top,
An oil return hole 9 is provided in the wall of the outlet pipe 8 located near the bottom of the container 6, and the compressor 1 is provided in the wall of the outlet pipe 8 located at a higher level than the oil return hole 9. The maximum oil layer height of the oil accumulated in the container 6 obtained by dividing the difference C between the maximum amount of oil that can be filled into the compressor 1 and the minimum amount of oil necessary for lubrication of the compressor 1 by the cross-sectional area m of the container 6. A plurality of auxiliary oil return holes 10 are opened at intervals approximately equal to L = C/m, and the height H 2 from the oil return hole 9 to the auxiliary oil return hole 10 located at the top is Maximum refrigerant amount V
within a range that is higher than the height H 1 =V/m obtained by dividing by the cross-sectional area m, and lower than the height H 1 + L that is the sum of the maximum oil layer height L in the container 6 to the height H 1 , each of the auxiliary oil return holes 10
... is the number obtained by dividing the height H 2 from the oil return hole 9 to the auxiliary oil return hole 10 located at the top by the maximum oil layer height L (n = H 2 /L). , regardless of the liquid level height of the liquid refrigerant stored in the accumulator main body container 6, the amount of oil in the compressor 1 is maintained at the compressor 1 while preventing the liquid refrigerant from returning to the compressor 1. The oil in the accumulator main body container 6 can be returned to the compressor 1 so that the amount of oil does not fall below the minimum oil amount required for lubrication of the compressor. Therefore, since the lubricating oil in the compressor 1 is prevented from running out, and the minimum number of auxiliary oil return holes 10 is provided,
It is also possible to prevent the liquid refrigerant from compressing the liquid in the compressor 1.
第1図は本考案アキユムレータの一実施例を示
す断面図、第2図は本考案アキユムレータを適用
する冷凍装置の配管系統図、第3図は従来例を示
す断面図である。
1……圧縮機、6……アキユムレータ本体容
器、7……入口管、8……出口管、9……油戻し
孔、10……補助油戻し孔。
FIG. 1 is a sectional view showing an embodiment of the inventive accumulator, FIG. 2 is a piping system diagram of a refrigeration system to which the inventive accumulator is applied, and FIG. 3 is a sectional view showing a conventional example. DESCRIPTION OF SYMBOLS 1... Compressor, 6... Accumulator main body container, 7... Inlet pipe, 8... Outlet pipe, 9... Oil return hole, 10... Auxiliary oil return hole.
Claims (1)
を冷媒配管を介して接続して成る冷凍装置におけ
る前記圧縮機1の吸入側に介装されて、冷媒の気
液分離を行うようにしたアキユムレータであつ
て、アキユムレータ本体容器6の内方上部に、入
口管7を開口させると共に、出口管8を前記容器
6の上部から内方底部近くを通り該容器6の内方
上部に開口させる一方、前記容器6の底部近くに
位置する前記出口管8の管壁に、油戻し孔9を開
設すると共に、この油戻し孔9より高位に位置す
る前記出口管8の管壁に、前記圧縮機1に充填可
能な最大油量と該圧縮機1の潤滑に必要な最小油
量との差Cを前記容器6の横断面積mで除して得
られる前記容器6内に溜る油の最大油層高さL=
C/mにほぼ等しい間隔で、複数の補助油戻し孔
10…を開設し、かつ、前記油戻し孔9から最上
位に位置する前記補助油戻し孔10までの高さ
H2を、最大冷媒量Vを前記横断面積mで除した
高さH1=V/mより高く、かつ、該高さH1に前
記容器6内における前記最大油層高さLを加算し
た高さH1+Lより低い範囲内に設定して、前記
各補助油戻し孔10…の個数を、前記油戻し孔9
から最上位に位置する前記補助油戻し孔10まで
の高さH2を前記最大油層高さLで除した個数n
=H2/Lとしていることを特徴とする冷凍装置
におけるアキユムレータ。 Compressor 1, condenser 2, expansion mechanism 3 and evaporator 4
This is an accumulator that is installed on the suction side of the compressor 1 in a refrigeration system in which the refrigerant is connected via refrigerant piping to perform gas-liquid separation of the refrigerant. , the inlet pipe 7 is opened, and the outlet pipe 8 is opened from the upper part of the container 6 through near the inner bottom part to the inner upper part of the container 6, while the outlet pipe 8 is located near the bottom part of the container 6. An oil return hole 9 is provided in the pipe wall of the outlet pipe 8 located at a higher level than the oil return hole 9. Maximum oil layer height L of oil accumulated in the container 6 obtained by dividing the difference C from the minimum amount of oil required for lubrication by the cross-sectional area m of the container 6 =
A plurality of auxiliary oil return holes 10 are opened at intervals approximately equal to C/m, and the height from the oil return hole 9 to the auxiliary oil return hole 10 located at the highest position.
H 2 is higher than the height H 1 = V/m obtained by dividing the maximum refrigerant amount V by the cross-sectional area m, and the height obtained by adding the maximum oil layer height L in the container 6 to the height H 1 The number of each of the auxiliary oil return holes 10 is set within a range lower than H 1 +L.
The number n obtained by dividing the height H2 from the auxiliary oil return hole 10 located at the top by the maximum oil layer height L
= H 2 /L.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1449588U JPH0539409Y2 (en) | 1988-02-04 | 1988-02-04 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1449588U JPH0539409Y2 (en) | 1988-02-04 | 1988-02-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01120065U JPH01120065U (en) | 1989-08-15 |
JPH0539409Y2 true JPH0539409Y2 (en) | 1993-10-06 |
Family
ID=31225741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1449588U Expired - Lifetime JPH0539409Y2 (en) | 1988-02-04 | 1988-02-04 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0539409Y2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5225895B2 (en) * | 2009-03-05 | 2013-07-03 | 日立アプライアンス株式会社 | Air conditioner |
JP5761013B2 (en) * | 2011-12-28 | 2015-08-12 | ダイキン工業株式会社 | accumulator |
JP5963598B2 (en) * | 2012-07-31 | 2016-08-03 | ジョンソンコントロールズ ヒタチ エア コンディショニング テクノロジー(ホンコン)リミテッド | Air conditioner |
-
1988
- 1988-02-04 JP JP1449588U patent/JPH0539409Y2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH01120065U (en) | 1989-08-15 |
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