JPH04255581A - Cooling device for compressor - Google Patents

Cooling device for compressor

Info

Publication number
JPH04255581A
JPH04255581A JP1649291A JP1649291A JPH04255581A JP H04255581 A JPH04255581 A JP H04255581A JP 1649291 A JP1649291 A JP 1649291A JP 1649291 A JP1649291 A JP 1649291A JP H04255581 A JPH04255581 A JP H04255581A
Authority
JP
Japan
Prior art keywords
cylinder
refrigerant
injection hole
compressor
supplied
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.)
Granted
Application number
JP1649291A
Other languages
Japanese (ja)
Other versions
JP2951010B2 (en
Inventor
Masaaki Sawadaishi
正明 沢田石
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP3016492A priority Critical patent/JP2951010B2/en
Publication of JPH04255581A publication Critical patent/JPH04255581A/en
Application granted granted Critical
Publication of JP2951010B2 publication Critical patent/JP2951010B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/13Economisers

Landscapes

  • Compressor (AREA)

Abstract

PURPOSE:To always cool a cylinder by a liquid refrigerant, accumulated in space, by opening a refrigerant injection hole into the cylinder in a range from 140 deg. to 220 deg. in the vicinity of the bottom dead center in a transfer from a suction stroke to a compression stroke of a piston in the cylinder. CONSTITUTION:A liquid refrigerant, condensed in a condenser 2, partly passing through a liquid injection pipe 5, is supplied into a cylinder 15 from a refrigerant injection hole 19 of a compressor 1. By providing space 20 on the halfway of the refrigerant injection hole 19, the cylinder 15 can be always cooled by the liquid refrigerant accumulated in this space. The refrigerant injection hole 19 is opened into the cylinder 15 in a range from 140 deg. to 220 deg. in the vicinity of the bottom dead center in transfer from a suction stroke to a compression stroke of a piston 17, so that the liquid refrigerant can be supplied into the cylinder 15 in small fluctuation of displacement. Consequently, a gas refrigerant amount of low temperature, supplied into the cylinder 15, is prevented from receiving an influence of the liquid refrigerant supplied into this cylinder.

Description

【発明の詳細な説明】[Detailed description of the invention]

【0001】0001

【産業上の利用分野】この発明は冷媒でシリンダを冷却
するようにした圧縮機の冷却装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compressor cooling system for cooling a cylinder with a refrigerant.

【0002】0002

【従来の技術】従来の往復動圧縮機は例えば実公昭61
−45350号公報に示されているように構成されてい
る。図6及び図7において、往復動圧縮機50、凝縮器
51、膨張弁52及び蒸発器53等のより周知の冷凍サ
イクルを構成している。また、凝縮器51の出口から側
路管54を設け、この側路管を圧縮機50の密閉ケース
55内の圧縮機体56のシリンダ57に設けた注入孔5
8に連結する。この注入孔はピストン59の下死点60
付近の位置Lに設ける。また、シリンダ57の頭部には
吸入孔61に吸入弁62、吐出孔63に吐出弁64を配
置している。
[Prior Art] A conventional reciprocating compressor is, for example,
It is constructed as shown in Japanese Patent No. 45350. 6 and 7, a reciprocating compressor 50, a condenser 51, an expansion valve 52, an evaporator 53, etc. constitute a more well-known refrigeration cycle. Further, a side pipe 54 is provided from the outlet of the condenser 51, and this side pipe is connected to the injection hole 57 provided in the cylinder 57 of the compressor body 56 in the closed case 55 of the compressor 50.
Connect to 8. This injection hole is located at the bottom dead center 60 of the piston 59.
Installed at nearby position L. Furthermore, a suction valve 62 is disposed in the suction hole 61 and a discharge valve 64 is disposed in the discharge hole 63 at the head of the cylinder 57 .

【0003】尚、65は内部吸入管、66は吐出管、6
7は注入冷媒量を制御するキャピラリチューブである。
Furthermore, 65 is an internal suction pipe, 66 is a discharge pipe, 6
7 is a capillary tube that controls the amount of refrigerant injected.

【0004】この構造の往復動圧縮機では凝縮器51の
液冷媒の一部を側路管54及び注入孔58を介してシリ
ンダ57内に供給し、このシリンダ内で液冷媒を気化さ
せて圧縮機体56が冷却されるようにしている。すなわ
ち、往復動圧縮機のインジェクション機構は注入孔58
が下死点60付近Lに設けられているので低圧冷媒ガス
が十分に吸入され、実質的に吸入を終了する吸入行程の
終了する間際にピストン59が注入孔58を開口し、こ
の注入孔から凝縮器51で凝縮された液冷媒をシリンダ
57内の圧力と凝縮器51内の圧力との差圧によりシリ
ンダ57内に液冷媒を供給するようにしている。
In the reciprocating compressor of this structure, a part of the liquid refrigerant in the condenser 51 is supplied into the cylinder 57 through the side pipe 54 and the injection hole 58, and the liquid refrigerant is vaporized and compressed in the cylinder. The fuselage 56 is cooled. That is, the injection mechanism of the reciprocating compressor has the injection hole 58.
Since the refrigerant gas is provided near the bottom dead center 60 L, the low-pressure refrigerant gas is sufficiently inhaled, and the piston 59 opens the injection hole 58 just before the end of the suction stroke where the suction is substantially completed. The liquid refrigerant condensed in the condenser 51 is supplied into the cylinder 57 by the differential pressure between the pressure in the cylinder 57 and the pressure in the condenser 51.

【0005】[0005]

【発明が解決しようとする課題】しかしながら、従来の
往復動圧縮機のインジェクション機構は注入孔58から
液冷媒がシリンダ57内に供給されたときのみ圧縮機体
56が冷却されているため、R−22の冷媒を冷凍用の
圧縮機50に使用する場合に、この圧縮機を十分に冷却
できなくなる問題があった。
However, in the injection mechanism of the conventional reciprocating compressor, the compressor body 56 is cooled only when liquid refrigerant is supplied into the cylinder 57 from the injection hole 58, so that the R-22 When using this refrigerant in the refrigeration compressor 50, there was a problem that the compressor could not be sufficiently cooled.

【0006】この発明は上記の問題を解決するもので、
シリンダ内で往復動するピストンの吸込行程から圧縮行
程に移行する下死点付近の140°から220°の範囲
内で冷媒を供給する冷媒噴射孔の途中に空間を設け、こ
の空間に溜っている液冷媒でシリンダを常時冷却するよ
うにした圧縮機の冷却装置を提供することを目的とした
ものである。
[0006] This invention solves the above problems.
A space is provided in the middle of the refrigerant injection hole that supplies refrigerant within the range of 140° to 220° near the bottom dead center when the piston reciprocates in the cylinder, transitioning from the suction stroke to the compression stroke, and the refrigerant accumulates in this space. The object of the present invention is to provide a cooling device for a compressor that constantly cools a cylinder with liquid refrigerant.

【0007】[0007]

【課題を解決するための手段】この発明はシリンダとこ
のシリンダ内を往復動するピストンとを有する圧縮機を
備え、この圧縮機のシリンダ内にインジェクション装置
で凝縮器から冷媒を供給するようにした圧縮機の冷却装
置において、前記インジェクション装置を凝縮器に接続
されたパイプと、このパイプを接続するシリンダに設け
られた冷媒噴射孔と、冷媒噴射孔の途中に設けた空間と
で構成し、この冷媒噴射孔をシリンダ内でピストンが吸
込行程から圧縮行程に移行する下死点付近の140°か
ら220°の範囲のシリンダ内に開口させたものである
[Means for Solving the Problems] The present invention includes a compressor having a cylinder and a piston that reciprocates within the cylinder, and an injection device supplies refrigerant from a condenser into the cylinder of the compressor. In a cooling device for a compressor, the injection device is composed of a pipe connected to a condenser, a refrigerant injection hole provided in a cylinder to which this pipe is connected, and a space provided in the middle of the refrigerant injection hole. The refrigerant injection hole is opened in the cylinder in the range of 140° to 220° near the bottom dead center where the piston moves from the suction stroke to the compression stroke.

【0008】[0008]

【作用】この発明は上記のように構成したことにより、
シリンダ内に供給して冷却を行う冷媒をピストンが下死
点付近で吸込行程から圧縮行程に移行する比較的シリン
ダ容積の変動の少ないシリンダ内に液冷媒を供給し、吸
込行程時のシリンダ内に流入する低圧冷媒の流入を制限
しないようにするとともに、シリンダを常時液冷媒で冷
却するようにしている。
[Operation] This invention is configured as described above, so that
Liquid refrigerant is supplied into the cylinder for cooling.The piston transitions from the suction stroke to the compression stroke when the piston is near the bottom dead center.The liquid refrigerant is supplied into the cylinder where the cylinder volume changes relatively little, and the liquid refrigerant is supplied into the cylinder during the suction stroke. The inflow of low-pressure refrigerant is not restricted, and the cylinder is always cooled with liquid refrigerant.

【0009】[0009]

【実施例】以下この発明を図1乃至図5に示す実施例に
基いて説明する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained below based on the embodiments shown in FIGS. 1 to 5.

【0010】1は半密閉圧縮機、2は凝縮器、3は減圧
装置、4は蒸発器で、これらは配管接続されて冷凍サイ
クルを構成している。5はリキッドインジェクション管
で、このリキッドインジェクション管は凝縮器2の出口
側と半密閉圧縮機1との間に設けられている。リキッド
インジェクション管5には液冷媒を減圧するキャピラリ
チューブ6が設けられている。
Reference numeral 1 is a semi-hermetic compressor, 2 is a condenser, 3 is a pressure reducing device, and 4 is an evaporator, which are connected by piping to constitute a refrigeration cycle. 5 is a liquid injection pipe, and this liquid injection pipe is provided between the outlet side of the condenser 2 and the semi-hermetic compressor 1. The liquid injection pipe 5 is provided with a capillary tube 6 for reducing the pressure of the liquid refrigerant.

【0011】図2は半密閉圧縮機1の構造を示し、7は
機枠体で、この機枠体には内部をモータ室8とクランク
室9とに区画する仕切壁10が設けられている。この仕
切壁の中央部には軸受11が形成されている。モータ室
8内には軸受11で軸支される回転軸12を有する電動
要素13が収納されている。14は圧縮要素で、この圧
縮要素は機枠体7と一体に形成されたシリンダ15と、
クランク室9内で回転軸12に連結されたコンロッド1
6と、このコンロッドによってシリンダ15内を往復摺
動するピストン17と、シリンダ15の上端に取付けた
シリンダヘッド18とで構成されている。
FIG. 2 shows the structure of the semi-hermetic compressor 1, where 7 is a machine frame body, and this machine frame body is provided with a partition wall 10 that divides the interior into a motor chamber 8 and a crank chamber 9. . A bearing 11 is formed in the center of this partition wall. An electric element 13 having a rotating shaft 12 supported by a bearing 11 is housed in the motor chamber 8 . 14 is a compression element, and this compression element includes a cylinder 15 formed integrally with the machine frame 7;
Connecting rod 1 connected to rotating shaft 12 in crank chamber 9
6, a piston 17 that slides reciprocally within the cylinder 15 by this connecting rod, and a cylinder head 18 attached to the upper end of the cylinder 15.

【0012】19はシリンダ15に設けられた冷媒噴射
孔で、この冷媒噴射孔はリキッドインジェクション管5
を接続するとともに、途中に空間20を形成している。 この空間はピストン17の周りに円弧状に形成されてい
る。
19 is a refrigerant injection hole provided in the cylinder 15, and this refrigerant injection hole is connected to the liquid injection pipe 5.
are connected, and a space 20 is formed in the middle. This space is formed in an arc shape around the piston 17.

【0013】このように構成された圧縮機の冷却装置に
おいて、ピストン17は電動要素13の回転軸12に連
結されたコンロッド16によってシリンダ15内を往復
摺動している。そして、冷媒はピストン17が下死点に
向かう吸込行程時にシリンダ15内に入り、ピストン1
7が上死点に向かう圧縮行程時にシリンダ15内で圧縮
され、凝縮器2に吐出される。この凝縮器で凝縮された
液冷媒は減圧装置3で減圧され、蒸発器4で気化して冷
却作用を行い圧縮機1に帰還している。
In the compressor cooling system constructed as described above, the piston 17 is reciprocated within the cylinder 15 by a connecting rod 16 connected to the rotating shaft 12 of the electric element 13. Then, the refrigerant enters the cylinder 15 during the suction stroke of the piston 17 toward the bottom dead center, and
7 is compressed within the cylinder 15 during the compression stroke toward the top dead center, and is discharged to the condenser 2. The liquid refrigerant condensed in this condenser is decompressed in a pressure reducing device 3, vaporized in an evaporator 4, performs a cooling action, and is returned to the compressor 1.

【0014】凝縮器2で凝縮した液冷媒の一部はリキッ
ドインジェクション管6を通り冷媒噴射孔19からシリ
ンダ15内に供給される。そして、シリンダ15内で圧
縮された冷媒の温度上昇が抑えられるようにしている。
A part of the liquid refrigerant condensed in the condenser 2 passes through the liquid injection pipe 6 and is supplied into the cylinder 15 from the refrigerant injection hole 19. Further, the temperature rise of the refrigerant compressed within the cylinder 15 is suppressed.

【0015】冷媒噴射孔19は途中に空間20を設ける
ことにより、この空間内に溜まる液冷媒でシリンダ15
を常時冷却できるようにしている。また、空間20はピ
ストン17の周りに円弧状に設けることにより、断熱圧
縮された高温部の冷媒と低温部のシリンダ17との温度
差の大きい面積を大きく取れるようにでき、空間20を
設けない部分のシリンダ15の温度上昇を低く抑えられ
るようにしている。そのため、冷媒は断熱圧縮温度の高
いR−22を低温用の冷凍機に使用しても圧縮要素14
の温度上昇を抑えることができるようにしている。
By providing a space 20 in the middle of the refrigerant injection hole 19, the liquid refrigerant accumulated in this space is used to blow the cylinder 15.
can be kept cool at all times. Furthermore, by providing the space 20 in an arc shape around the piston 17, it is possible to obtain a large area where there is a large temperature difference between the adiabatic compressed refrigerant in the high temperature part and the cylinder 17 in the low temperature part, and the space 20 is not provided. This makes it possible to suppress the temperature rise of the cylinder 15 at a low level. Therefore, even if R-22, which has a high adiabatic compression temperature, is used as a refrigerant in a low-temperature refrigerator, the compression element 14
This makes it possible to suppress the rise in temperature.

【0016】また、冷媒噴射孔19はピストン17が吸
込行程から圧縮行程に移行する下死点付近の140°か
ら220°の範囲内でシリンダ15内に開口することに
より、容積変動の少ないシリンダ15内に液冷媒を供給
できるようにしている。そのため、シリンダ15内に供
給される低温のガス冷媒量はこのシリンダ内へ供給され
る液冷媒の影響を受けないようにされている。
Furthermore, by opening the refrigerant injection hole 19 into the cylinder 15 within the range of 140° to 220° near the bottom dead center when the piston 17 transitions from the suction stroke to the compression stroke, the cylinder 15 has little volume fluctuation. It is possible to supply liquid refrigerant inside the tank. Therefore, the amount of low-temperature gas refrigerant supplied into the cylinder 15 is not affected by the liquid refrigerant supplied into this cylinder.

【0017】[0017]

【発明の効果】以上のようにこの発明によれば、シリン
ダとこのシリンダ内を往復動するピストンとを有する圧
縮機を備え、この圧縮機のシリンダ内にインジェクショ
ン装置で凝縮器から冷媒を供給するようにした圧縮機の
冷却装置において、前記インジェクション装置を凝縮器
の出口側に設けられたパイプと、このパイプを接続する
シリンダに設けられた冷媒噴射孔と、この冷媒噴射孔の
途中に設けた空間とで構成し、この冷媒噴射孔をシリン
ダ内でピストンが吸込行程から圧縮行程に移行する下死
点付近の140°から220°の範囲のシリンダ内に開
口させたのであるから、冷媒噴射孔の途中に設けた空間
でシリンダを常時冷却することができ、前記シリンダ内
に供給する液冷媒をピストンが下死点付近の140°〜
220°の狭い範囲でしかシリンダ内に液冷媒を供給で
きなくても圧縮要素の温度上昇を抑えることができるよ
うにしたものである。しかも、この発明は断熱圧縮温度
の高いR−22の冷媒を冷凍用に使用しても圧縮機の温
度上昇を抑えることができるようにしたものである。
As described above, according to the present invention, the compressor is provided with a cylinder and a piston that reciprocates within the cylinder, and refrigerant is supplied from the condenser into the cylinder of the compressor by an injection device. In the compressor cooling device, the injection device is provided between a pipe provided on the outlet side of the condenser, a refrigerant injection hole provided in a cylinder connecting this pipe, and a refrigerant injection hole provided halfway between the refrigerant injection hole. Since this refrigerant injection hole is opened in the cylinder in the range of 140° to 220° near the bottom dead center where the piston moves from the suction stroke to the compression stroke, the refrigerant injection hole The cylinder can be constantly cooled in the space provided in the middle of the cylinder, and the liquid refrigerant supplied into the cylinder is heated between 140° and 140° near the bottom dead center of the piston.
Even if liquid refrigerant can only be supplied into the cylinder within a narrow range of 220°, the temperature rise in the compression element can be suppressed. Moreover, this invention makes it possible to suppress the temperature rise of the compressor even when R-22 refrigerant, which has a high adiabatic compression temperature, is used for refrigeration.

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

【図1】この発明の一実施例を示す冷凍サイクル図であ
る。
FIG. 1 is a refrigeration cycle diagram showing one embodiment of the present invention.

【図2】この発明の半密閉圧縮機の断面図である。FIG. 2 is a sectional view of the semi-hermetic compressor of the present invention.

【図3】この発明のシリンダの平面図である。FIG. 3 is a plan view of the cylinder of the invention.

【図4】この発明のシリンダの拡大断面図である。FIG. 4 is an enlarged sectional view of the cylinder of the invention.

【図5】この発明のシリンダ内をピストンが摺動するこ
とによる特性図である。
FIG. 5 is a characteristic diagram of the piston sliding inside the cylinder of the present invention.

【図6】従来の冷凍サイクル図である。FIG. 6 is a diagram of a conventional refrigeration cycle.

【図7】従来の圧縮要素の断面図である。FIG. 7 is a cross-sectional view of a conventional compression element.

【符号の説明】[Explanation of symbols]

2  凝縮器 5  リキッドインジェクション管 14  圧縮要素 15  シリンダ 17  ピストン 19  冷媒噴射孔 20  空間 2 Condenser 5 Liquid injection tube 14 Compression element 15 Cylinder 17 Piston 19 Refrigerant injection hole 20 Space

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】  シリンダとこのシリンダ内を往復動す
るピストンとを有する圧縮機を備え、この圧縮機のシリ
ンダ内にインジェクション装置で凝縮器から冷媒を供給
するようにした圧縮機の冷却装置において、前記インジ
ェクション装置を凝縮器の出口側に設けられたパイプと
、このパイプを接続するシリンダに設けられた冷媒噴射
孔と、この冷媒噴射孔の途中に設けた空間とで構成し、
この冷媒噴射孔をシリンダ内でピストンが吸込行程から
圧縮行程に移行する下死点付近の140°から220°
の範囲のシリンダ内に開口させていることを特徴とする
圧縮機の冷却装置。
1. A cooling device for a compressor, comprising a compressor having a cylinder and a piston that reciprocates within the cylinder, and in which refrigerant is supplied from a condenser to the cylinder of the compressor by an injection device, comprising: The injection device is composed of a pipe provided on the outlet side of the condenser, a refrigerant injection hole provided in a cylinder connecting this pipe, and a space provided in the middle of the refrigerant injection hole,
This refrigerant injection hole is inserted into the cylinder from 140° to 220° near the bottom dead center where the piston moves from the suction stroke to the compression stroke.
A cooling device for a compressor, characterized in that the opening is made into a cylinder within the range of .
JP3016492A 1991-02-07 1991-02-07 Compressor cooling system Expired - Lifetime JP2951010B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3016492A JP2951010B2 (en) 1991-02-07 1991-02-07 Compressor cooling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3016492A JP2951010B2 (en) 1991-02-07 1991-02-07 Compressor cooling system

Publications (2)

Publication Number Publication Date
JPH04255581A true JPH04255581A (en) 1992-09-10
JP2951010B2 JP2951010B2 (en) 1999-09-20

Family

ID=11917789

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3016492A Expired - Lifetime JP2951010B2 (en) 1991-02-07 1991-02-07 Compressor cooling system

Country Status (1)

Country Link
JP (1) JP2951010B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1954992A1 (en) * 2005-12-01 2008-08-13 Carrier Corporation Method and apparatus of optimizing the cooling load of an economized vapor compression system
US20140170006A1 (en) * 2012-12-18 2014-06-19 Emerson Climate Technologies, Inc. Reciprocating compressor with vapor injection system
WO2023155331A1 (en) * 2022-02-18 2023-08-24 安徽美芝制冷设备有限公司 Compressor and refrigeration device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1954992A1 (en) * 2005-12-01 2008-08-13 Carrier Corporation Method and apparatus of optimizing the cooling load of an economized vapor compression system
EP1954992A4 (en) * 2005-12-01 2011-01-26 Carrier Corp Method and apparatus of optimizing the cooling load of an economized vapor compression system
US20140170006A1 (en) * 2012-12-18 2014-06-19 Emerson Climate Technologies, Inc. Reciprocating compressor with vapor injection system
WO2014100156A1 (en) 2012-12-18 2014-06-26 Emerson Climate Technologies, Inc. Reciprocating compressor with vapor injection system
EP2935888A4 (en) * 2012-12-18 2017-01-18 Emerson Climate Technologies, Inc. Reciprocating compressor with vapor injection system
CN107143476A (en) * 2012-12-18 2017-09-08 艾默生环境优化技术有限公司 Compressor assembly
CN107191347A (en) * 2012-12-18 2017-09-22 艾默生环境优化技术有限公司 Reciprocating compressor with steam injected system
US10280918B2 (en) 2012-12-18 2019-05-07 Emerson Climate Technologies, Inc. Reciprocating compressor with vapor injection system
US10352308B2 (en) 2012-12-18 2019-07-16 Emerson Climate Technologies, Inc. Reciprocating compressor with vapor injection system
CN107191347B (en) * 2012-12-18 2019-07-23 艾默生环境优化技术有限公司 Reciprocating compressor with steam injected system
WO2023155331A1 (en) * 2022-02-18 2023-08-24 安徽美芝制冷设备有限公司 Compressor and refrigeration device

Also Published As

Publication number Publication date
JP2951010B2 (en) 1999-09-20

Similar Documents

Publication Publication Date Title
KR100821796B1 (en) Hermetic compressor
CN105485953B (en) Ultra-low temperature refrigerating device
US20060045762A1 (en) Suction muffler for compressor
JPH04255581A (en) Cooling device for compressor
US5228843A (en) Compressor for domestic refrigerators
US2597243A (en) Refrigerator compressor cooling arrangement
KR200288717Y1 (en) Structure of refrigerator for entrainment cars
CN113286941B (en) Cooled piston and cylinder for compressors and engines
KR100764783B1 (en) Reciprocating compressor and refrigerating system with this and sopercritical refrigerating system with this
US9453662B2 (en) Cryogenic refrigerator
JPH11304271A (en) Cold storage type refrigerating machine and superconducting magnet using it
CN100491867C (en) Refrigerator comprising a regenerator
JPH10299650A (en) Linear reciprocating compressor
KR100296296B1 (en) Linear actuator
JP3731064B2 (en) Linear reciprocating compressor
KR200382906Y1 (en) Inlet muffler of a compressor
KR0170874B1 (en) Compressor for alternative refrigerant
JPH022478B2 (en)
JPS5919256Y2 (en) refrigeration cycle
JP2828934B2 (en) Gas compression and expansion machine
JP2002242830A (en) Reciprocation type compressor having discharge pulsation reduction structure
JPS6145350Y2 (en)
JPH11257769A (en) Cold storage refrigerating machine
JPH0447430Y2 (en)
KR200317644Y1 (en) Inlet muffler of a compressor