JPH1114200A - Accumulator - Google Patents
AccumulatorInfo
- Publication number
- JPH1114200A JPH1114200A JP16398397A JP16398397A JPH1114200A JP H1114200 A JPH1114200 A JP H1114200A JP 16398397 A JP16398397 A JP 16398397A JP 16398397 A JP16398397 A JP 16398397A JP H1114200 A JPH1114200 A JP H1114200A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- storage chamber
- oil level
- outlet pipe
- detecting means
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003921 oil Substances 0.000 claims abstract description 115
- 239000003507 refrigerant Substances 0.000 claims abstract description 38
- 239000010721 machine oil Substances 0.000 claims abstract description 27
- 238000005057 refrigeration Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 abstract description 41
- 238000001514 detection method Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 7
- AFYPFACVUDMOHA-UHFFFAOYSA-N chlorotrifluoromethane Chemical compound FC(F)(F)Cl AFYPFACVUDMOHA-UHFFFAOYSA-N 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000001052 transient effect Effects 0.000 description 3
- 239000010696 ester oil Substances 0.000 description 2
- 229920005862 polyol Polymers 0.000 description 2
- 150000003077 polyols Chemical class 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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
- F25B2700/03—Oil level
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
- Compressor (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、空調機のアキュム
レータに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an accumulator for an air conditioner.
【０００２】[0002]
【従来の技術】従来のアキュムレータとしては実公平５
−３９４０９号公報に示されているものがある。2. Description of the Related Art As a conventional accumulator, actual accumulator 5
There is one disclosed in Japanese Patent Application Publication No. 39409/39.
【０００３】このアキュムレータは圧縮機、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なる冷凍
装置において、圧縮機の吸入側に設置され、冷媒の気液
分離及び余剰冷媒の貯蔵を行う。This accumulator is installed on the suction side of a compressor in a refrigeration system in which a compressor, a condenser, an expansion mechanism, and an evaporator are connected via a refrigerant pipe. I do.
【０００４】以下、図面を参照しながら従来のアキュム
レータについて説明する。図３は、従来のアキュムレー
タの内部構造図である。図３において、１はアキュムレ
ータの本体容器である。２は入口管であり、本体容器１
の内方上部に開口している。３は出口管であり、本体容
器１の上部から内方底部近くを通り、内方上部に開口し
ている。Hereinafter, a conventional accumulator will be described with reference to the drawings. FIG. 3 is an internal structural view of a conventional accumulator. In FIG. 3, reference numeral 1 denotes a main body container of the accumulator. Reference numeral 2 denotes an inlet pipe,
It is open at the top inside. Reference numeral 3 denotes an outlet pipe, which passes from the upper portion of the main body container 1 to the vicinity of the inner bottom portion and opens to the inner upper portion.
【０００５】４ａは返油孔であり、出口管３の底部近く
に位置する管壁に開設している。４ｂは補助返油孔であ
り、返油孔４ａより高位に位置する出口管３の管壁に複
数開設している。[0005] Reference numeral 4a denotes an oil return hole, which is formed in a pipe wall located near the bottom of the outlet pipe 3. Reference numeral 4b denotes an auxiliary oil return hole, and a plurality of auxiliary oil return holes are provided on the pipe wall of the outlet pipe 3 located higher than the oil return hole 4a.
【０００６】Ｌは補助返油孔４ｂを開設する間隔であ
り、圧縮機に充填可能な最大油量と圧縮機の潤滑に必要
な最小油量との差Ｃを本体容器１の横断面積ｍで除して
得られる値（Ｌ＝Ｃ／ｍ）であり、これは本体容器１に
溜まる油の最大油層高さである。L is the interval at which the auxiliary oil return hole 4b is opened, and the difference C between the maximum oil amount that can be filled in the compressor and the minimum oil amount required for lubrication of the compressor is expressed by the cross-sectional area m of the main body container 1. (L = C / m), which is the maximum oil layer height of the oil accumulated in the main body container 1.
【０００７】Ｈ１は、最大冷媒量Ｖを本体容器１の横断
面積ｍで除した高さである（Ｈ１＝Ｖ／ｍ）。H1 is the height obtained by dividing the maximum refrigerant amount V by the cross sectional area m of the main container 1 (H1 = V / m).
【０００８】Ｈ２は、返油孔４ａから最上位に位置する
補助返油孔４ｂまでの高さであり、Ｈ１に最大油層高さ
Ｌを加算した高さより低い範囲内に設定されている（Ｈ
２＜Ｈ１＋Ｌ）。H2 is the height from the oil return hole 4a to the uppermost auxiliary oil return hole 4b, and is set within a range lower than the height obtained by adding the maximum oil layer height L to H1 (H
2 <H1 + L).
【０００９】補助返油孔４ｂの個数は、Ｈ２を最大油層
高さＬで除して求められる（ｎ＝Ｈ２／Ｌ）。The number of auxiliary oil return holes 4b is obtained by dividing H2 by the maximum oil layer height L (n = H2 / L).
【００１０】以上のように構成されたアキュムレータに
ついて、以下その動作を説明する。まず、本体容器１に
液冷媒が溜まっていないときには（例えば、空調機では
外気温度の高い冷房運転時）、油だけが本体容器１の底
部に存在する。The operation of the accumulator configured as described above will be described below. First, when the liquid refrigerant is not accumulated in the main body container 1 (for example, in an air conditioner during a cooling operation in which the outside air temperature is high), only oil exists at the bottom of the main body container 1.
【００１１】この場合、油は返油孔４ａから吸い込ま
れ、補助返油孔４ｂから吸い込まれたガス冷媒と一緒
に、圧縮機に返油される。In this case, the oil is sucked from the oil return hole 4a and returned to the compressor together with the gas refrigerant sucked from the auxiliary oil return hole 4b.
【００１２】次に、本体容器１に液冷媒が溜まっている
ときには（例えば、空調機では外気温度の低い暖房運転
時）、液冷媒と油が二層分離して、油が液冷媒の上層に
存在する。この現象は、冷媒と非相溶性の油を使用した
ときだけでなく、相溶性の油を使用したときでも起こ
る。Next, when the liquid refrigerant is accumulated in the main body container 1 (for example, in an air conditioner during a heating operation with a low outside air temperature), the liquid refrigerant and the oil are separated into two layers, and the oil is deposited on the upper layer of the liquid refrigerant. Exists. This phenomenon occurs not only when oil that is incompatible with the refrigerant is used, but also when oil that is compatible with the refrigerant is used.
【００１３】例えば、Ｒ２２の代替冷媒として知られる
Ｒ４０７Ｃに、相溶性のポリオールエステル油を使用し
たときでも、二層分離は発生する。[0013] For example, even when a compatible polyol ester oil is used for R407C, which is known as an alternative refrigerant to R22, two-layer separation occurs.
【００１４】この場合、油は補助返油孔４ｂから吸い込
まれて、圧縮機に返油される。In this case, the oil is sucked through the auxiliary oil return hole 4b and returned to the compressor.
【００１５】[0015]
【発明が解決しようとする課題】しかしながら上記従来
の構成は、補助返油孔４ｂが複数個あるため、本体容器
１に多量の液冷媒が溜まって液面が高い場合には、上位
に位置する補助返油孔４ｂからは油を吸い込むが、下位
に位置する補助返油孔４ｂからは液冷媒を吸い込む。However, in the above-mentioned conventional configuration, since a plurality of auxiliary oil return holes 4b are provided, when a large amount of liquid refrigerant is accumulated in the main body container 1 and the liquid level is high, it is located at a higher position. Although oil is sucked in from the auxiliary oil return hole 4b, liquid refrigerant is sucked in from the auxiliary oil return hole 4b located below.
【００１６】このため、補助返油孔４ｂの個数が多いほ
ど、油と一緒に吸い込む液冷媒量が多くなり、圧縮機へ
の液バックが発生し、圧縮機の信頼性を損なうという課
題を有していた。Therefore, as the number of the auxiliary oil return holes 4b increases, the amount of liquid refrigerant sucked together with oil increases, causing liquid back to the compressor, thereby deteriorating the reliability of the compressor. Was.
【００１７】本発明は上記課題を解決するもので、本体
容器に液冷媒が溜まっている場合に、圧縮機への液バッ
クを防止し、圧縮機の信頼性を確保できるアキュムレー
タを提供することを目的としている。The present invention has been made to solve the above problems, and provides an accumulator capable of preventing liquid back to a compressor when liquid refrigerant is accumulated in a main body container and ensuring reliability of the compressor. The purpose is.
【００１８】[0018]
【課題を解決するための手段】この目的を達成するため
に本発明のアキュムレータは、貯留室の上部から挿入し
貯留室内の底部近くを通って貯留室内の上部にて開口す
る導出管と、貯留室の底部近くに位置する導出管に設け
た油戻し穴と、貯留室内に貯まった冷凍機油の油面を検
出する油面検出手段と、油面検出手段と貯留室の底部近
くに位置する導出管とを接続する接続手段と、油面検出
手段の近くに位置する接続手段に設けた補助油戻し穴と
を備えた構成となっている。In order to achieve this object, an accumulator according to the present invention comprises a discharge pipe inserted from the top of a storage chamber, passing near the bottom of the storage chamber, and opening at the top of the storage chamber. An oil return hole provided in the outlet pipe located near the bottom of the chamber, oil level detecting means for detecting the oil level of the refrigerating machine oil stored in the storage chamber, and an oil level detecting means and an outlet located near the bottom of the storage chamber. The configuration includes a connecting means for connecting the pipe and an auxiliary oil return hole provided in the connecting means located near the oil level detecting means.
【００１９】このことにより、低外気温度の暖房運転の
ように、貯留室に液冷媒が溜まる場合に、圧縮機への液
バックを防止し、圧縮機の信頼性を確保できる。Thus, when the liquid refrigerant accumulates in the storage chamber as in a heating operation at a low outside air temperature, liquid back to the compressor can be prevented, and the reliability of the compressor can be ensured.
【００２０】また、油面検出手段に導出管を貫通させ、
油面検出手段が導出管の外壁をスライドする構成となっ
ている。In addition, the outlet pipe is passed through the oil level detecting means,
The oil level detecting means slides on the outer wall of the outlet pipe.
【００２１】このことにより、油面高さの変動に滑らか
に追従して、常に圧縮機への返油量を確保できるととも
に、圧縮機への液バックを防止して、過渡運転状態での
圧縮機の信頼性を確保することができる。[0021] With this arrangement, it is possible to smoothly follow the fluctuation of the oil level, to always secure the amount of oil returned to the compressor, to prevent the liquid from flowing back to the compressor, and to reduce the compression in the transient operation state. The reliability of the machine can be ensured.
【００２２】[0022]
【発明の実施の形態】本発明の請求項１に記載の発明
は、冷媒を貯留する貯留室と、貯留室の上部に挿入した
導入管と、貯留室の上部から挿入し貯留室内の底部近く
を通って貯留室内の上部にて開口する導出管と、貯留室
の底部近くに位置する導出管に設けた油戻し穴と、貯留
室内に貯まった冷凍機油の油面を検出する油面検出手段
と、油面検出手段と貯留室の底部近くに位置する導出管
とを接続する接続手段と、油面検出手段の近くに位置す
る接続手段に設けた補助油戻し穴とを備えた構成であ
り、油面検出手段は冷凍機油より密度が小さいフロート
を用い、接続手段はフレキシブルチューブを用いる。DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to a storage chamber for storing a refrigerant, an introduction pipe inserted into the upper part of the storage chamber, and a bottom part inserted from the upper part of the storage chamber and near the bottom of the storage chamber. An outlet pipe provided at the top of the storage chamber through the outlet, an oil return hole provided in the outlet pipe located near the bottom of the storage chamber, and an oil level detecting means for detecting an oil level of the refrigerating machine oil stored in the storage chamber And connection means for connecting the oil level detection means and the outlet pipe located near the bottom of the storage chamber, and an auxiliary oil return hole provided in the connection means located near the oil level detection means. The oil level detecting means uses a float having a density lower than that of the refrigerator oil, and the connecting means uses a flexible tube.
【００２３】このため、冷房運転のように貯留室に液冷
媒が溜まらない場合は、油戻し穴から冷凍機油を吸い込
み、圧縮機へ返油する作用を有する。For this reason, when the liquid refrigerant does not accumulate in the storage chamber as in the cooling operation, it has a function of sucking the refrigerating machine oil from the oil return hole and returning the oil to the compressor.
【００２４】低外気温度の暖房運転のように貯留室に液
冷媒が溜まり、液冷媒と冷凍機油が二層分離する場合
は、油面検出手段（フロート）が冷凍機油に浮いて、補
助油戻し穴から冷凍機油を吸い込み、圧縮機へ返油する
作用を有する。When the liquid refrigerant accumulates in the storage chamber and the liquid refrigerant and the refrigerating machine oil are separated into two layers as in the heating operation at a low outside air temperature, the oil level detecting means (float) floats on the refrigerating machine oil and returns the auxiliary oil. It has the function of sucking the refrigerating machine oil from the hole and returning it to the compressor.
【００２５】請求項２に記載の発明は、請求項１に記載
の発明に、さらに、油面検出手段に導出管を貫通させ、
油面検出手段が導出管の外壁をスライドする構成とした
ものであり、油面検出手段は冷凍機油より密度が小さい
フロートを用い、接続手段はフレキシブルチューブを用
いる。According to a second aspect of the present invention, in addition to the first aspect, the oil level detecting means is further provided with a discharge pipe penetrating therethrough.
The oil level detecting means slides on the outer wall of the outlet pipe. The oil level detecting means uses a float having a lower density than the refrigerating machine oil, and the connecting means uses a flexible tube.
【００２６】このため、冷房運転のように貯留室に液冷
媒が溜まらない場合は、請求項１に記載の発明と同じ作
用を有する。For this reason, when the liquid refrigerant does not accumulate in the storage chamber as in the cooling operation, it has the same effect as the first aspect of the present invention.
【００２７】低外気温度の暖房運転のように貯留室に液
冷媒が溜まり、液冷媒と冷凍機油が二層分離する場合
は、油面検出手段（フロート）が油面変動に応じて滑ら
かに動き、補助油戻し穴から冷凍機油を吸い込み、圧縮
機へ返油する作用を有する。When the liquid refrigerant accumulates in the storage chamber and the liquid refrigerant and the refrigerating machine oil are separated into two layers as in a heating operation at a low outside air temperature, the oil level detecting means (float) moves smoothly in response to the oil level fluctuation. And has the function of sucking the refrigerating machine oil from the auxiliary oil return hole and returning the oil to the compressor.
【００２８】[0028]
【実施例】以下、本発明によるアキュムレータの実施例
について、図面を参照しながら説明する。尚、従来と同
一構成については、同一符号を付して詳細な説明を省略
する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the accumulator according to the present invention will be described below with reference to the drawings. The same components as those of the related art are denoted by the same reference numerals, and detailed description is omitted.
【００２９】（実施例１）図１は本発明の実施例１によ
るアキュムレータの内部構造図である。図１において、
５は貯留室であり、本体容器１の内部空間である。６は
導入管であり、貯留室５の上部にて開口している。(Embodiment 1) FIG. 1 is an internal structural diagram of an accumulator according to Embodiment 1 of the present invention. In FIG.
Reference numeral 5 denotes a storage room, which is an internal space of the main body container 1. Reference numeral 6 denotes an introduction pipe, which is open at an upper portion of the storage chamber 5.
【００３０】７は導出管であり、貯留室５の上部から挿
入し、底部付近でＵ字管を形成している。８は導出管７
の開口であり、貯留室５の上部に位置している。The outlet pipe 7 is inserted from the top of the storage chamber 5 and forms a U-shaped pipe near the bottom. 8 is an outlet pipe 7
And is located above the storage chamber 5.
【００３１】９は油戻し穴であり、導出管７の管壁に設
けられており、貯留室５の底部近くに位置している。１
０は油面検出手段であり、密度が冷凍機油より小さいフ
ロート（約７００ｋｇ／ｍ3）を使用している。Reference numeral 9 denotes an oil return hole, which is provided in the pipe wall of the outlet pipe 7 and is located near the bottom of the storage chamber 5. 1
Numeral 0 denotes oil level detecting means, which uses a float (about 700 kg / m 3 ) whose density is smaller than that of the refrigerating machine oil.
【００３２】１１は接続手段であり、油面検出手段１０
の下部と導出管７の底部付近を接続しており、フレキシ
ブルチューブを使用している。１２は補助油戻し穴であ
り、接続手段１１の管壁に設けられており、油面検出手
段１０近傍に位置している。Numeral 11 denotes connection means, and oil level detection means 10
Is connected to the vicinity of the bottom of the outlet pipe 7, and a flexible tube is used. Reference numeral 12 denotes an auxiliary oil return hole, which is provided on the pipe wall of the connecting means 11 and is located near the oil level detecting means 10.
【００３３】１３は貯留室５に溜まった液冷媒である。
１４は冷凍機油であり、液冷媒１３と二層分離してい
る。Reference numeral 13 denotes a liquid refrigerant stored in the storage chamber 5.
Reference numeral 14 denotes a refrigerating machine oil, which is separated from the liquid refrigerant 13 by two layers.
【００３４】冷媒にＲ４０７Ｃ、冷凍機油に相溶性のポ
リオールエステル油を使用した場合でも、低外気温度の
暖房運転において、アキュムレータに液冷媒が溜まる
と、二層分離が発生することを、筆者は実験で確認して
いる。Even when R407C was used as the refrigerant and a polyol ester oil compatible with the refrigerating machine oil, the authors found that two-layer separation occurs when the liquid refrigerant accumulates in the accumulator during heating operation at a low outside air temperature. Is confirmed.
【００３５】この場合、冷媒の密度が約１２００ｋｇ／
ｍ3、冷凍機油の密度が約９００ｋｇ／ｍ3であり、冷凍
機油の層が液冷媒の上に形成される。In this case, the density of the refrigerant is about 1200 kg /
m 3 , the density of the refrigerating machine oil is about 900 kg / m 3 , and a layer of the refrigerating machine oil is formed on the liquid refrigerant.
【００３６】以上のように構成されたアキュムレータに
ついて、以下その動作を説明する。低外気温暖房運転時
のように、貯留室５に液冷媒１３が溜まり、冷凍機油１
４が二層分離した場合には、油面検出手段１０が冷凍機
油１４の上に浮き、補助油戻し穴１２から冷凍機油１４
を導出管７内部に吸い込む。そして、開口８から吸い込
んだガス冷媒と一緒に、圧縮機へ送る。The operation of the accumulator configured as described above will be described below. As in the low outside air temperature heating operation, the liquid refrigerant 13 accumulates in the storage chamber 5 and the refrigeration oil 1
4 is separated into two layers, the oil level detecting means 10 floats on the refrigerating machine oil 14 and the refrigerating machine oil 14
Is sucked into the outlet pipe 7. Then, it is sent to the compressor together with the gas refrigerant sucked from the opening 8.
【００３７】このことにより、液面上に滞留する冷凍機
油１４を圧縮機に返油することができる。このとき、油
戻し穴９から導出管７内部に吸い込まれる液冷媒１３は
微量であり、圧縮機への液バックは生じない。Thus, the refrigerating machine oil 14 staying on the liquid surface can be returned to the compressor. At this time, the amount of the liquid refrigerant 13 sucked into the outlet pipe 7 from the oil return hole 9 is very small, and the liquid does not flow back to the compressor.
【００３８】冷房運転時のように、貯留室５に液冷媒が
溜まらない場合には、油戻し穴９から冷凍機油を導出管
７内部に吸い込み、開口８から吸い込んだガス冷媒と一
緒に、圧縮機へ送る。When the liquid refrigerant does not accumulate in the storage chamber 5 as in the cooling operation, the refrigerating machine oil is sucked into the outlet pipe 7 from the oil return hole 9 and compressed together with the gas refrigerant sucked from the opening 8. Send to machine.
【００３９】このことにより、圧縮機へ返油できる。 （実施例２）図２は本発明の実施例２によるアキュムレ
ータの内部構造図である。尚、実施例１と同一構成につ
いては同一符号を付し、その詳細な説明を省略する。Thus, the oil can be returned to the compressor. (Embodiment 2) FIG. 2 is an internal structure diagram of an accumulator according to Embodiment 2 of the present invention. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.
【００４０】図２において、１５は油面検出手段であ
り、中心部に導出管７の外径より若干大きい径の穴を有
したフロートであり、導出管７の外壁に沿って滑らかに
動く。この油面検出手段１５（フロート）は、密度が冷
凍機油より小さい（約７００ｋｇ／ｍ3）。In FIG. 2, reference numeral 15 denotes an oil level detecting means, which is a float having a hole having a diameter slightly larger than the outer diameter of the outlet pipe 7 at the center thereof, which moves smoothly along the outer wall of the outlet pipe 7. The oil level detecting means 15 (float) has a lower density than the refrigerating machine oil (about 700 kg / m 3 ).
【００４１】以上のように構成されたアキュムレータに
ついて、以下その動作を説明する。低外気温暖房運転時
のように、貯留室５に液冷媒１３が溜まり、冷凍機油１
４が二層分離した場合には、油面検出手段１５が冷凍機
油１４の上に浮き、補助油戻し穴１２から冷凍機油１４
を導出管７内部に吸い込む。そして、開口８から吸い込
んだガス冷媒と一緒に、圧縮機へ送る。The operation of the accumulator configured as described above will be described below. As in the low outside air temperature heating operation, the liquid refrigerant 13 accumulates in the storage chamber 5 and the refrigeration oil 1
4 is separated into two layers, the oil level detecting means 15 floats on the refrigerating machine oil 14 and the refrigerating machine oil 14
Is sucked into the outlet pipe 7. Then, it is sent to the compressor together with the gas refrigerant sucked from the opening 8.
【００４２】このことにより、液面上に滞留する冷凍機
油１４を圧縮機に返油することができる。このとき、油
戻し穴９から導出管７内部に吸い込まれる液冷媒１３は
微量であり、圧縮機への液バックは生じない。Thus, the refrigerating machine oil 14 remaining on the liquid surface can be returned to the compressor. At this time, the amount of the liquid refrigerant 13 sucked into the outlet pipe 7 from the oil return hole 9 is very small, and the liquid does not flow back to the compressor.
【００４３】また、導出管７が油面検出手段１５のガイ
ドになるため、過渡状態で油面が変動しても、油面検出
手段１５は滑らかに油面変動に追従し、圧縮機への返油
の信頼性を高めることができる。Also, since the outlet pipe 7 serves as a guide for the oil level detecting means 15, even if the oil level fluctuates in a transient state, the oil level detecting means 15 smoothly follows the oil level fluctuation, and The reliability of oil return can be improved.
【００４４】冷房運転時のように、貯留室５に液冷媒が
溜まらない場合の動作は、実施例１と同じである。The operation when the liquid refrigerant does not accumulate in the storage chamber 5 as in the cooling operation is the same as in the first embodiment.
【００４５】[0045]
【発明の効果】以上説明したように請求項１に記載の発
明は、貯留室内に貯まった冷凍機油の油面を検出する油
面検出手段と、油面検出手段と貯留室の底部近くに位置
する導出管とを接続する接続手段と、油面検出手段の近
くに位置する接続手段に設けた補助油戻し穴とを備える
ことにより、貯留室に液冷媒が溜まって、液冷媒と冷凍
機油が二層分離する場合でも、圧縮機への返油量を確保
できるとともに、圧縮機への液バックを防止し、圧縮機
の信頼性を確保できる。As described above, according to the first aspect of the present invention, the oil level detecting means for detecting the oil level of the refrigerating machine oil stored in the storage chamber, and the oil level detecting means and the oil level detecting means are located near the bottom of the storage chamber. The liquid refrigerant accumulates in the storage chamber by providing the connection means for connecting the outlet pipe to be connected, and the auxiliary oil return hole provided in the connection means located near the oil level detection means, and the liquid refrigerant and the refrigerating machine oil are collected. Even when two layers are separated, it is possible to secure the amount of oil returned to the compressor, prevent liquid back to the compressor, and ensure the reliability of the compressor.
【００４６】また、請求項２に記載の発明は、請求項１
に記載の発明に加えて、油面検出手段に導出管を貫通さ
せ、油面検出手段が導出管の外壁をスライドする構成を
備えることにより、油面が変動しても、油面検出手段が
滑らかに油面変動に追従して、常に圧縮機への返油量を
確保でき、過渡状態においても、圧縮機への返油の信頼
性を高めることができる。Further, the invention described in claim 2 is the first invention.
In addition to the invention described in the above, by providing a configuration in which the oil level detection means penetrates the outlet pipe and the oil level detection means slides the outer wall of the outlet pipe, even if the oil level fluctuates, the oil level detection means The amount of oil returned to the compressor can be always secured by following the oil level fluctuation smoothly, and the reliability of the oil returned to the compressor can be increased even in a transient state.
【図１】本発明によるアキュムレータの実施例１の内部
構造図FIG. 1 is an internal structural diagram of an accumulator according to a first embodiment of the present invention.
【図２】本発明によるアキュムレータの実施例２の内部
構造図FIG. 2 is an internal structural diagram of Embodiment 2 of the accumulator according to the present invention.
【図３】従来のアキュムレータの内部構造図FIG. 3 is a diagram showing the internal structure of a conventional accumulator.
５ 貯留室 ６ 導入管 ７ 導出管 ８ 開口 ９ 油戻し穴 １０ 油面検出手段（フロート） １１ 接続手段（フレキシブルチューブ） １２ 補助油戻し穴 １５ 油面検出手段（フロート） Reference Signs List 5 storage chamber 6 introduction pipe 7 outlet pipe 8 opening 9 oil return hole 10 oil level detection means (float) 11 connection means (flexible tube) 12 auxiliary oil return hole 15 oil level detection means (float)
Claims (4)
に取り付けられ、冷媒を貯留する貯留室と、前記貯留室
の上部に挿入した導入管と、前記貯留室の上部から挿入
し前記貯留室内の底部近くを通って前記貯留室内の上部
にて開口する導出管と、前記貯留室の底部近くに位置す
る前記導出管に設けた油戻し穴と、前記貯留室内に貯ま
った冷凍機油の油面を検出する油面検出手段と、前記油
面検出手段と前記貯留室の底部近くに位置する前記導出
管とを接続する接続手段と、前記油面検出手段の近くに
位置する前記接続手段に設けた補助油戻し穴とを備えた
アキュムレータ。1. A storage chamber which is attached to a suction side of a compressor constituting a refrigeration cycle and stores a refrigerant, an introduction pipe inserted into an upper part of the storage chamber, and a storage chamber inserted from an upper part of the storage chamber. An outlet pipe that opens near the bottom of the storage chamber through the bottom of the storage chamber, an oil return hole provided in the outlet pipe that is located near the bottom of the storage chamber, and an oil level of refrigerating machine oil stored in the storage chamber. Oil level detecting means for detecting oil level, connecting means for connecting the oil level detecting means and the outlet pipe located near the bottom of the storage chamber, and connecting means located near the oil level detecting means. Accumulator with an auxiliary oil return hole.
油面検出手段が前記導出管の外壁をスライドする構成と
した請求項１に記載のアキュムレータ。2. The accumulator according to claim 1, wherein the outlet pipe penetrates the oil level detecting means, and the oil level detecting means slides on an outer wall of the outlet pipe.
が小さいフロートを用いたことを特徴とする請求項１ま
たは請求項２に記載のアキュムレータ。3. The accumulator according to claim 1, wherein a float having a density lower than that of the refrigerating machine oil is used as the oil level detecting means.
を用いたことを特徴とする請求項１または請求項２に記
載のアキュムレータ。4. The accumulator according to claim 1, wherein a flexible tube is used as the connecting means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16398397A JPH1114200A (en) | 1997-06-20 | 1997-06-20 | Accumulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16398397A JPH1114200A (en) | 1997-06-20 | 1997-06-20 | Accumulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1114200A true JPH1114200A (en) | 1999-01-22 |
Family
ID=15784533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16398397A Pending JPH1114200A (en) | 1997-06-20 | 1997-06-20 | Accumulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1114200A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011034096A1 (en) * | 2009-09-17 | 2011-03-24 | サンデン株式会社 | Liquid receiver and refrigeration circuit provided with same |
| JP2011064456A (en) * | 2010-12-20 | 2011-03-31 | Kobelco Eco-Solutions Co Ltd | Heat reservoir |
| US20120006041A1 (en) * | 2009-03-31 | 2012-01-12 | Takashi Ikeda | Refrigerating device |
| CN106338161A (en) * | 2016-10-28 | 2017-01-18 | 珠海格力电器股份有限公司 | Oil return device and air conditioning unit |
| WO2022099609A1 (en) * | 2020-11-13 | 2022-05-19 | 常兴集团有限公司 | Air conditioning unit having oil return device |
| CN117146485A (en) * | 2023-09-18 | 2023-12-01 | 上海爱斯达克汽车空调系统有限公司 | Gas-liquid separator that controls oil return volume based on hose deformation |
-
1997
- 1997-06-20 JP JP16398397A patent/JPH1114200A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120006041A1 (en) * | 2009-03-31 | 2012-01-12 | Takashi Ikeda | Refrigerating device |
| US9541313B2 (en) * | 2009-03-31 | 2017-01-10 | Mitsubishi Electric Corporation | Refrigerating device |
| WO2011034096A1 (en) * | 2009-09-17 | 2011-03-24 | サンデン株式会社 | Liquid receiver and refrigeration circuit provided with same |
| JP2011064456A (en) * | 2010-12-20 | 2011-03-31 | Kobelco Eco-Solutions Co Ltd | Heat reservoir |
| CN106338161A (en) * | 2016-10-28 | 2017-01-18 | 珠海格力电器股份有限公司 | Oil return device and air conditioning unit |
| WO2022099609A1 (en) * | 2020-11-13 | 2022-05-19 | 常兴集团有限公司 | Air conditioning unit having oil return device |
| CN114930098A (en) * | 2020-11-13 | 2022-08-19 | 常兴集团有限公司 | Air conditioning unit of oil return device |
| CN117146485A (en) * | 2023-09-18 | 2023-12-01 | 上海爱斯达克汽车空调系统有限公司 | Gas-liquid separator that controls oil return volume based on hose deformation |
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