JPH1163690A - Refrigerating apparatus - Google Patents
Refrigerating apparatusInfo
- Publication number
- JPH1163690A JPH1163690A JP21860797A JP21860797A JPH1163690A JP H1163690 A JPH1163690 A JP H1163690A JP 21860797 A JP21860797 A JP 21860797A JP 21860797 A JP21860797 A JP 21860797A JP H1163690 A JPH1163690 A JP H1163690A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- compressor
- capillary tube
- solenoid valve
- oil separator
- 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- Withdrawn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
- 238000005057 refrigeration Methods 0.000 claims description 16
- 230000006835 compression Effects 0.000 abstract description 11
- 238000007906 compression Methods 0.000 abstract description 11
- 230000008014 freezing Effects 0.000 abstract 1
- 238000007710 freezing Methods 0.000 abstract 1
- 239000003507 refrigerant Substances 0.000 description 52
- 239000007788 liquid Substances 0.000 description 27
- 238000010586 diagram Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000013311 vegetables Nutrition 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
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
- F25B31/004—Lubrication oil recirculating arrangements
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば野菜や食肉
の冷蔵等に適用される冷凍装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerating apparatus applied to, for example, refrigeration of vegetables and meat.
【０００２】[0002]
【従来の技術】図２は、従来の冷凍装置の配管系統図で
ある。この冷凍装置は、コンデンシングユニット３０と
ユニットクーラ２からなり、コンデンシングユニット３
０とユニットクーラ２は、冷媒ガス管１９、冷媒液管２
０を介して接続されている。なお、ユニットクーラ２は
冷凍庫（不図示）内に設置されており、コンデンシング
ユニット３０は前記冷凍庫外に設置されている。2. Description of the Related Art FIG. 2 is a piping diagram of a conventional refrigeration system. This refrigerating apparatus comprises a condensing unit 30 and a unit cooler 2, and a condensing unit 3
0 and the unit cooler 2 are the refrigerant gas pipe 19 and the refrigerant liquid pipe 2
0. Note that the unit cooler 2 is installed in a freezer (not shown), and the condensing unit 30 is installed outside the freezer.
【０００３】コンデンシングユニット３０は、ロータリ
圧縮機３、アキュームレータ８、オイルセパレータ１
２、油戻しキャピラリチューブ１３、電磁弁７、冷媒液
インジェクション用キャピラリチューブ４、電動モータ
付送風機５及び凝縮器６等から構成されている。ユニッ
トクーラ２は、膨張弁１１、エバポレータ１０及び電動
モータ付送風機９等から構成されている。The condensing unit 30 comprises a rotary compressor 3, an accumulator 8, an oil separator 1
2. It comprises an oil return capillary tube 13, an electromagnetic valve 7, a refrigerant liquid injection capillary tube 4, a blower 5 with an electric motor, a condenser 6, and the like. The unit cooler 2 includes an expansion valve 11, an evaporator 10, a blower 9 with an electric motor, and the like.
【０００４】このような構成をなす冷凍装置が冷凍運転
を行なう場合、コンデンシングユニット３０のロータリ
圧縮機３で冷媒が圧縮され、その吐出ガスはオイルセパ
レータ１２で冷媒ガスと油が分離され、油は油戻しキャ
ピラリチューブ１３で減圧されて少しづつ冷媒ガス管１
９に戻され、アキュームレータ８を経てロータリ圧縮機
３に帰す。オイルセパレータ１２で分離された冷媒ガス
は、凝縮器６で電動モータ付送風機５により風を送られ
て冷却されて、冷媒液となる。この冷媒液は冷媒液管２
０を通り、ユニットクーラ２の膨張弁１１で減圧されて
蒸発器１０にて電動モータ付き送風機９により送られる
前記冷凍庫内の空気を冷やしてガス化する。When the refrigerating apparatus having such a configuration performs a refrigerating operation, the refrigerant is compressed by the rotary compressor 3 of the condensing unit 30, and the discharged gas is separated from the refrigerant gas and oil by the oil separator 12. Is depressurized by the oil return capillary tube 13 and is gradually added to the refrigerant gas pipe 1.
9 and returns to the rotary compressor 3 via the accumulator 8. The refrigerant gas separated by the oil separator 12 is blown by the blower 5 with the electric motor in the condenser 6 to be cooled and becomes a refrigerant liquid. This refrigerant liquid is a refrigerant liquid pipe 2
0, the pressure in the freezer is reduced by the expansion valve 11 of the unit cooler 2, and the air in the freezer sent by the blower 9 with the electric motor in the evaporator 10 is cooled and gasified.
【０００５】ユニットクーラ２における蒸発器１０の冷
媒ガスは、冷媒ガス管１９を通り、コンデンシングユニ
ット３０のアキュームレータ８を経てロータリ圧縮機３
に吸入される。ロータリ圧縮機３が運転中で、吐出ガス
温度が制限値以上になったとき、図示しない制御部によ
り電磁弁７が開かれ、凝縮器６からの冷媒液はキャピラ
リチューブ４にて減圧されて、ロータリ圧縮機３の気筒
（圧縮空間）内に噴射され、冷媒吐出ガスの温度を下げ
る。[0005] The refrigerant gas of the evaporator 10 in the unit cooler 2 passes through the refrigerant gas pipe 19, passes through the accumulator 8 of the condensing unit 30, and turns into the rotary compressor 3.
Inhaled. When the rotary compressor 3 is operating and the discharge gas temperature becomes equal to or higher than the limit value, the solenoid valve 7 is opened by a control unit (not shown), and the refrigerant liquid from the condenser 6 is depressurized by the capillary tube 4. It is injected into a cylinder (compression space) of the rotary compressor 3 to lower the temperature of the refrigerant discharge gas.
【０００６】そして当該冷凍装置が運転を停止したと
き、前記制御部により電磁弁７と膨張弁１１は閉止さ
れ、ロータリ圧縮機３内には吐出弁（図示せず）がある
が、オイルセパレータ１２の油戻しキャピラリチューブ
１３には閉止弁がないので、オイルセパレータ１２中の
油と凝縮器６中の高圧冷媒液は油戻しキャピラリチュー
ブ１３を通って、低圧冷媒ガスのある冷媒ガス管１９に
冷媒の差圧により流され、アキュームレータ８を通って
圧縮機３に供給される。When the operation of the refrigeration system is stopped, the solenoid valve 7 and the expansion valve 11 are closed by the control unit, and a discharge valve (not shown) is provided in the rotary compressor 3. Since the oil return capillary tube 13 does not have a shut-off valve, the oil in the oil separator 12 and the high-pressure refrigerant liquid in the condenser 6 pass through the oil return capillary tube 13 to the refrigerant gas pipe 19 containing the low-pressure refrigerant gas. And supplied to the compressor 3 through the accumulator 8.
【０００７】[0007]
【発明が解決しようとする課題】コンデンシングユニッ
ト３０とユニットクーラ２とが遠く離されて設置されて
いるとき、冷媒液管２０は長くなり、冷媒液量は多く必
要になる。この場合、当該冷凍装置が停止したとき、ロ
ータリ圧縮機３に戻される油と冷媒液量は多い。しか
も、油の比重は約０．８ｇ／cm3 、冷媒液の比重は約
１．０ｇ／cm3 であり冷媒液の比重は重く、ロータリ圧
縮機３の下部にある圧縮機構と軸受部（不図示）は冷媒
液中に没する。また、油の比重は軽いため油は冷媒液の
上方にあり、ロータリ圧縮機３の起動時に、前記圧縮機
構と軸受部は油が少ないため焼き付きを起こすという問
題がある。When the condensing unit 30 and the unit cooler 2 are installed far apart from each other, the refrigerant liquid pipe 20 becomes long, and a large amount of refrigerant liquid is required. In this case, when the refrigeration apparatus stops, the amount of oil and refrigerant liquid returned to the rotary compressor 3 is large. Moreover, the specific gravity of the oil is about 0.8 g / cm 3 , the specific gravity of the refrigerant liquid is about 1.0 g / cm 3 , and the specific gravity of the refrigerant liquid is heavy. (Shown) is submerged in the refrigerant liquid. Further, since the specific gravity of the oil is low, the oil is located above the refrigerant liquid, and when the rotary compressor 3 is started, there is a problem that the compression mechanism and the bearing portion are seized due to the small amount of the oil.
【０００８】本発明の目的は、圧縮機下部にある圧縮機
構と軸受部の焼き付きを防止する冷凍装置を提供するこ
とにある。An object of the present invention is to provide a refrigerating apparatus for preventing a seizure of a compression mechanism and a bearing part provided at a lower part of a compressor.
【０００９】[0009]
【課題を解決するための手段】上記課題を解決し目的を
達成するために、本発明の冷凍装置は以下の如く構成さ
れている。Means for Solving the Problems In order to solve the above problems and achieve the object, a refrigeration system of the present invention is configured as follows.
【００１０】本発明の冷凍装置は、圧縮機、オイルセパ
レータ及び油戻しキャピラリチューブを備えたユニット
を有する冷凍装置において、前記オイルセパレータの油
出口と前記油戻しキャピラリチューブとの間に電磁弁を
設け、かつ前記オイルセパレータ上部と前記油戻しキャ
ピラリチューブの入口とをつなぐ均圧キャピラリチュー
ブを設け、前記圧縮機の運転中に前記電磁弁を開き前記
圧縮機の停止中に前記電磁弁を閉じるよう制御する。The refrigeration apparatus of the present invention is a refrigeration apparatus having a unit including a compressor, an oil separator and an oil return capillary tube, wherein an electromagnetic valve is provided between an oil outlet of the oil separator and the oil return capillary tube. And a pressure equalizing capillary tube connecting the upper part of the oil separator and the inlet of the oil return capillary tube, wherein the solenoid valve is opened during operation of the compressor and the solenoid valve is closed while the compressor is stopped. I do.
【００１１】[0011]
【発明の実施の形態】図１は、本発明の実施の形態に係
る冷凍装置の配管系統図である。図１において図２と同
一な部分には同一符号を付してある。この冷凍装置は、
コンデンシングユニット１とユニットクーラ２からな
り、コンデンシングユニット１とユニットクーラ２は、
冷媒ガス管１９、冷媒液管２０を介して接続されてい
る。なお、ユニットクーラ２は冷凍庫（不図示）内に設
置されており、コンデンシングユニット３０は前記冷凍
庫外に設置されている。FIG. 1 is a piping diagram of a refrigeration apparatus according to an embodiment of the present invention. In FIG. 1, the same parts as those in FIG. 2 are denoted by the same reference numerals. This refrigeration system
The condensing unit 1 and the unit cooler 2 are composed of a condensing unit 1 and a unit cooler 2.
They are connected via a refrigerant gas pipe 19 and a refrigerant liquid pipe 20. Note that the unit cooler 2 is installed in a freezer (not shown), and the condensing unit 30 is installed outside the freezer.
【００１２】コンデンシングユニット１は、ロータリ圧
縮機３、アキュームレータ８、オイルセパレータ１２、
油戻しキャピラリチューブ１３、均圧キャピラリチュー
ブ１４、電磁弁１５、電磁弁７、冷媒液インジェクショ
ン用キャピラリチューブ４、電動モータ付送風機５及び
凝縮器６等から構成されている。ユニットクーラ２は、
膨張弁１１、エバポレータ１０及び電動モータ付送風機
９等から構成されている。The condensing unit 1 includes a rotary compressor 3, an accumulator 8, an oil separator 12,
It comprises an oil return capillary tube 13, an equalizing capillary tube 14, an electromagnetic valve 15, an electromagnetic valve 7, a refrigerant liquid injection capillary tube 4, a blower 5 with an electric motor, a condenser 6, and the like. Unit cooler 2
It comprises an expansion valve 11, an evaporator 10, a blower 9 with an electric motor, and the like.
【００１３】コンデンシングユニット１におけるオイル
セパレータ１２の油戻しキャピラリチューブ１３の入口
には電磁弁１５が、オイルセパレータ１２の上方と油戻
しキャピラリチューブ１３の入口との間には均圧キャピ
ラリチューブ１４が介装されている。電磁弁１５は、当
該冷凍装置の運転中に開き、停止中に閉止する。均圧キ
ャピラリチューブ１４は内径０．６〜０．８mmφ程度の
毛細管からなる。A solenoid valve 15 is provided at the inlet of the oil return capillary tube 13 of the oil separator 12 of the condensing unit 1, and a pressure equalizing capillary tube 14 is provided between the oil separator 12 and the inlet of the oil return capillary tube 13. It is interposed. The solenoid valve 15 opens during operation of the refrigeration apparatus and closes during stoppage. Pressure equalization capillary tube 14 consists of a capillary having an inner diameter of about 0.6 to 0.8 mm phi.
【００１４】当該冷凍装置の運転中は、冷媒ガスがオイ
ルセパレータ１２の上部に接続された均圧キャピラリチ
ューブ１４の入口から入り、油戻しキャピラリチューブ
１３の油中に吐出されるが、均圧キャピラリチューブ１
４の入口と出口の差圧が少ないため、流れる冷媒ガスの
量は少ない。当該冷凍装置の運転停止時に、オイルセパ
レータ１２の上部の高圧冷媒ガスは均圧キャピラリチュ
ーブ１４及び油戻しキャピラリチューブ１３を通って低
圧ガスの存在する冷媒ガス管１９に流れ、高圧側と低圧
側を均圧する。During operation of the refrigeration system, the refrigerant gas enters through the inlet of the equalizing capillary tube 14 connected to the upper part of the oil separator 12 and is discharged into the oil of the oil return capillary tube 13. Tube 1
Since the pressure difference between the inlet and the outlet of No. 4 is small, the amount of flowing refrigerant gas is small. When the operation of the refrigeration apparatus is stopped, the high-pressure refrigerant gas above the oil separator 12 flows through the equalizing capillary tube 14 and the oil return capillary tube 13 to the refrigerant gas pipe 19 in which the low-pressure gas is present. Equalize.
【００１５】このような構成をなす冷凍装置が冷凍運転
を行なう場合、図示しない制御部によりコンデンシング
ユニット１の電磁弁１５と電磁弁７が開かれ、さらにユ
ニットクーラ２の膨張弁１１が開かれる。そして、圧縮
機３で圧縮され吐出された冷媒ガスが配管を通ってオイ
ルセパレータ１２、凝縮器６、エバポレータ１０及びア
キュームレータ８を循環して圧縮機３に戻る。When the refrigerating apparatus having such a configuration performs a refrigerating operation, the solenoid valve 15 and the solenoid valve 7 of the condensing unit 1 are opened by a control unit (not shown), and the expansion valve 11 of the unit cooler 2 is opened. . Then, the refrigerant gas compressed and discharged by the compressor 3 circulates through the pipe through the oil separator 12, the condenser 6, the evaporator 10, and the accumulator 8, and returns to the compressor 3.
【００１６】このとき、圧縮機３から吐出された冷媒ガ
スはオイルセパレータ１２に入り、オイルセパレータ１
２で油が分離される。オイルセパレータ１２で分離され
た油は電磁弁１５及び油戻しキャピラリチューブ１３を
通って冷媒ガス管１９に戻される。オイルセパレータ１
２の冷媒ガスの一部は、前述したように均圧キャピラリ
チューブ１４を通って油戻しキャピラリチューブ１３の
入口の油中に吐出されるが、均圧キャピラリチューブ１
４の入口と出口の差圧が小さいため、均圧キャピラリチ
ューブ１４を流れる冷媒ガスの量は少ない。よって、ほ
とんどの冷媒ガスはオイルセパレータ１２から凝縮器６
の方向へ流れる。At this time, the refrigerant gas discharged from the compressor 3 enters the oil separator 12 and the oil separator 1
The oil is separated in 2. The oil separated by the oil separator 12 is returned to the refrigerant gas pipe 19 through the solenoid valve 15 and the oil return capillary tube 13. Oil separator 1
Part of the refrigerant gas of No. 2 is discharged into the oil at the inlet of the oil return capillary tube 13 through the pressure equalizing capillary tube 14 as described above.
Since the pressure difference between the inlet and the outlet of port 4 is small, the amount of the refrigerant gas flowing through the pressure equalizing capillary tube 14 is small. Therefore, most of the refrigerant gas is supplied from the oil separator 12 to the condenser 6.
Flows in the direction of.
【００１７】当該冷凍装置の運転が停止すると、前記制
御部により圧縮機３は停止され、圧縮機３内部の吐出弁
（不図示）は閉められ、電磁弁１５、電磁弁７及び膨張
弁１１も閉止される。オイルセパレータ１２内の高圧冷
媒ガスは均圧キャピラリチューブ１４と油戻しキャピラ
リチューブ１３を通って冷媒ガス管１９に流れ、やがて
高圧側と低圧側が均圧される。また、オイルセパレータ
１２の下部には油が溜まり、凝縮器６と冷媒液管２０に
は均圧された圧力の冷媒液が溜められる。When the operation of the refrigeration system is stopped, the compressor 3 is stopped by the control unit, a discharge valve (not shown) inside the compressor 3 is closed, and the solenoid valve 15, the solenoid valve 7, and the expansion valve 11 are also closed. Closed. The high-pressure refrigerant gas in the oil separator 12 flows through the pressure equalizing capillary tube 14 and the oil return capillary tube 13 to the refrigerant gas pipe 19, and the high-pressure side and the low-pressure side are eventually equalized. Oil is stored in a lower portion of the oil separator 12, and a refrigerant liquid having a uniform pressure is stored in the condenser 6 and the refrigerant liquid pipe 20.
【００１８】この結果、圧縮機３に多量の冷媒液が戻さ
れることがなくなり、圧縮機３の下部にある圧縮機構と
軸受部（不図示）も冷媒液中に没することがなく、続い
て圧縮機３が起動するときにすぐに圧縮機３中に溜めら
れた油が供給されるため、前記圧縮機構と軸受部が焼き
付くことがなくなる。As a result, a large amount of refrigerant liquid is not returned to the compressor 3, and the compression mechanism and bearings (not shown) at the lower part of the compressor 3 do not sink into the refrigerant liquid. Since the oil stored in the compressor 3 is supplied immediately when the compressor 3 starts, the compression mechanism and the bearing are not seized.
【００１９】なお、本発明は上記実施の形態のみに限定
されず、要旨を変更しない範囲で適時変形して実施でき
る。It should be noted that the present invention is not limited to only the above-described embodiment, and can be carried out with appropriate modification within a range that does not change the gist.
【００２０】（実施の形態のまとめ）実施の形態に示さ
れた構成及び作用効果をまとめると次の通りである。(Summary of Embodiment) The configuration, operation and effect shown in the embodiment are summarized as follows.
【００２１】実施の形態に示された冷凍装置は、冷凍庫
内に設置され、エバポレータ１０、送風機９等からなる
ユニットクーラ２と、前記冷凍庫外に設置され、ロータ
リ圧縮機３、オイルセパレータ１２と油戻しキャピラリ
チューブ１３、凝縮器６、送風機５及び前記圧縮機３の
吐出ガス温度を下げるための冷媒液インジェクション用
キャピラリチューブ４等を備えたコンデンシングユニッ
ト１とを冷媒配管２０でつないだ冷凍装置において、前
記オイルセパレータ１２の油出口と前記油戻しキャピラ
リチューブ１３との間に電磁弁１５を設け、かつ前記オ
イルセパレータ１２上部と前記油戻しキャピラリチュー
ブ１３の入口とをつなぐ均圧キャピラリチューブ１４を
設け、前記圧縮機３の運転中に前記電磁弁１５を開き前
記圧縮機３の停止中に前記電磁弁１５を閉じるよう制御
する。The refrigerating apparatus shown in the embodiment is installed in a freezer and includes a unit cooler 2 including an evaporator 10 and a blower 9 and the like, and a rotary compressor 3, an oil separator 12 and an oil separator 12 installed outside the freezer. In a refrigerating apparatus in which a condensing unit 1 including a return capillary tube 13, a condenser 6, a blower 5, and a refrigerant liquid injection capillary tube 4 for lowering the discharge gas temperature of the compressor 3 and the like is connected by a refrigerant pipe 20. An electromagnetic valve 15 is provided between an oil outlet of the oil separator 12 and the oil return capillary tube 13, and a pressure equalizing capillary tube 14 is provided for connecting an upper portion of the oil separator 12 and an inlet of the oil return capillary tube 13. Opening the solenoid valve 15 during operation of the compressor 3 and stopping the compressor 3 The control to close the solenoid valve 15 to the.
【００２２】したがって上記冷凍装置によれば、圧縮機
３の運転中にオイルセパレータ１２の油出口と油戻しキ
ャピラリチューブ１３との間の電磁弁１５を開き、前記
圧縮機３の停止中に前記電磁弁１５を閉じるよう制御す
るので、前記圧縮機３に多量の冷媒液が戻されることが
なくなり、前記圧縮機３の下部にある圧縮機構と軸受部
が冷媒液中に没することがなく、続いて前記圧縮機３が
起動するときにすぐに前記圧縮機３中に溜められた油が
供給されるため、前記圧縮機構と軸受部が焼き付くこと
がなくなる。Therefore, according to the refrigerating apparatus, the solenoid valve 15 between the oil outlet of the oil separator 12 and the oil return capillary tube 13 is opened during the operation of the compressor 3, and the electromagnetic valve 15 is stopped while the compressor 3 is stopped. Since the valve 15 is controlled to be closed, a large amount of refrigerant liquid is not returned to the compressor 3, and the compression mechanism and the bearing at the lower part of the compressor 3 are not immersed in the refrigerant liquid. As the oil stored in the compressor 3 is supplied immediately when the compressor 3 starts operating, the compression mechanism and the bearing are not seized.
【００２３】[0023]
【発明の効果】本発明の冷凍装置によれば、圧縮機の運
転中にオイルセパレータの油出口と油戻しキャピラリチ
ューブとの間の電磁弁を開き、前記圧縮機の停止中に前
記電磁弁を閉じるよう制御するので、前記圧縮機に多量
の冷媒液が戻されることがなくなり、前記圧縮機の下部
にある圧縮機構と軸受部が冷媒液中に没することがな
く、続いて前記圧縮機が起動するときにすぐに前記圧縮
機中に溜められた油が供給されるため、前記圧縮機構と
軸受部が焼き付くことがなくなる。すなわち本発明によ
れば、圧縮機下部にある圧縮機構と軸受部の焼き付きを
防止する冷凍装置を提供できる。According to the refrigerating apparatus of the present invention, the solenoid valve between the oil outlet of the oil separator and the oil return capillary tube is opened during the operation of the compressor, and the solenoid valve is opened while the compressor is stopped. Since the control is performed to close the compressor, a large amount of refrigerant liquid is not returned to the compressor, and the compression mechanism and the bearing at the lower part of the compressor do not submerge in the refrigerant liquid. Since the oil stored in the compressor is supplied immediately upon startup, the compression mechanism and the bearing are not seized. That is, according to the present invention, it is possible to provide a refrigerating device that prevents seizure of a compression mechanism and a bearing portion at a lower portion of the compressor.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の実施の形態に係る冷凍装置の配管系統
図。FIG. 1 is a piping diagram of a refrigeration apparatus according to an embodiment of the present invention.
【図２】従来例に係る冷凍装置の配管系統図。FIG. 2 is a piping diagram of a refrigeration apparatus according to a conventional example.
１…コンデンシングユニット ２…ユニットクーラ ３…ロータリ圧縮機 ４…冷媒液インジェクション用キャピラリチューブ ５…電動モータ付送風機 ６…凝縮器 ７…電磁弁 ８…アキュームレータ ９…電動モータ付送風機 １０…エバポレータ １１…膨張弁 １２…オイルセパレータ １３…油戻しキャピラリチューブ １４…均圧キャピラリチューブ １５…電磁弁 １９…冷媒ガス管 ２０…冷媒液管 ３０…コンデンシングユニット DESCRIPTION OF SYMBOLS 1 ... Condensing unit 2 ... Unit cooler 3 ... Rotary compressor 4 ... Capillary tube for refrigerant liquid injection 5 ... Blower with electric motor 6 ... Condenser 7 ... Solenoid valve 8 ... Accumulator 9 ... Blower with electric motor 10 ... Evaporator 11 ... Expansion valve 12 ... oil separator 13 ... oil return capillary tube 14 ... equalization capillary tube 15 ... solenoid valve 19 ... refrigerant gas pipe 20 ... refrigerant liquid pipe 30 ... condensing unit
Claims (1)
ピラリチューブを備えたユニットを有する冷凍装置にお
いて、 前記オイルセパレータの油出口と前記油戻しキャピラリ
チューブとの間に電磁弁を設け、かつ前記オイルセパレ
ータ上部と前記油戻しキャピラリチューブの入口とをつ
なぐ均圧キャピラリチューブを設け、前記圧縮機の運転
中に前記電磁弁を開き前記圧縮機の停止中に前記電磁弁
を閉じるよう制御することを特徴とする冷凍装置。1. A refrigerating apparatus having a unit provided with a compressor, an oil separator and an oil return capillary tube, wherein a solenoid valve is provided between an oil outlet of the oil separator and the oil return capillary tube, and the oil separator is provided. An equalizing capillary tube connecting an upper portion and an inlet of the oil return capillary tube is provided, and the solenoid valve is controlled to be opened while the compressor is operating and the solenoid valve is closed while the compressor is stopped. Refrigeration equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21860797A JPH1163690A (en) | 1997-08-13 | 1997-08-13 | Refrigerating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21860797A JPH1163690A (en) | 1997-08-13 | 1997-08-13 | Refrigerating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1163690A true JPH1163690A (en) | 1999-03-05 |
Family
ID=16722616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21860797A Withdrawn JPH1163690A (en) | 1997-08-13 | 1997-08-13 | Refrigerating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1163690A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002016840A1 (en) * | 2000-08-21 | 2002-02-28 | Mitsubishi Denki Kabushiki Kaisha | Oil separator and outdoor unit with the oil separator |
| CN103471299A (en) * | 2013-08-30 | 2013-12-25 | 青岛海信日立空调系统有限公司 | Multi-connected air-conditioner oil control system and oil control method |
| CN104990307A (en) * | 2015-08-05 | 2015-10-21 | 珠海格力电器股份有限公司 | Air conditioner, compression module and compression module group |
| CN105180493A (en) * | 2015-09-01 | 2015-12-23 | 珠海格力电器股份有限公司 | Compressor module, multi-module unit and oil balancing control method of multi-module unit |
-
1997
- 1997-08-13 JP JP21860797A patent/JPH1163690A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002016840A1 (en) * | 2000-08-21 | 2002-02-28 | Mitsubishi Denki Kabushiki Kaisha | Oil separator and outdoor unit with the oil separator |
| US6574986B2 (en) | 2000-08-21 | 2003-06-10 | Mitsubishi Denki Kabushiki Kaisha | Oil separator and outdoor unit with the oil separator |
| CN103471299A (en) * | 2013-08-30 | 2013-12-25 | 青岛海信日立空调系统有限公司 | Multi-connected air-conditioner oil control system and oil control method |
| CN104990307A (en) * | 2015-08-05 | 2015-10-21 | 珠海格力电器股份有限公司 | Air conditioner, compression module and compression module group |
| CN105180493A (en) * | 2015-09-01 | 2015-12-23 | 珠海格力电器股份有限公司 | Compressor module, multi-module unit and oil balancing control method of multi-module unit |
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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: 20041102 |