JPH09151875A - Refrigerant compressor - Google Patents
Refrigerant compressorInfo
- Publication number
- JPH09151875A JPH09151875A JP33796895A JP33796895A JPH09151875A JP H09151875 A JPH09151875 A JP H09151875A JP 33796895 A JP33796895 A JP 33796895A JP 33796895 A JP33796895 A JP 33796895A JP H09151875 A JPH09151875 A JP H09151875A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- refrigerant
- pin
- groove
- sealing plug
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Lubricants (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は冷媒に１，１，
１，２−テトラフルオロエタン（以下Ｒ１３４ａとい
う）等の塩素を含まない弗化炭化水素系冷媒或いはその
混合冷媒を用いる冷媒圧縮機で、ポリオールエステル系
油またはポリオールエーテル油を基油とした冷凍機油を
使用した冷媒圧縮機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention
Refrigerant compressor using a fluorocarbon-based refrigerant that does not contain chlorine such as 1,2-tetrafluoroethane (hereinafter referred to as R134a) or a mixed refrigerant thereof, which is a refrigerating machine oil using a polyol ester-based oil or a polyol ether oil as a base oil. The invention relates to a refrigerant compressor.
【０００２】[0002]
【従来の技術】冷蔵庫、自動販売機及びショーケース用
の圧縮機は従来冷媒としてジクロロジフルオロメタン
（以下Ｒ１２という）を多く使用していた。このＲ１２
はオゾン層の破壊の問題からフロン規制の対象となって
いる。そして、このＲ１２の代替冷媒としてＲ１３４ａ
を代表とする塩素を含まない弗化炭化水素系冷媒（ＨＦ
Ｃ，ＦＣ）が冷凍機用として検討されている（例えば、
特開平１−２７１４９１号公報参照）。2. Description of the Related Art Compressors for refrigerators, vending machines and showcases have conventionally used a large amount of dichlorodifluoromethane (hereinafter referred to as R12) as a refrigerant. This R12
Is subject to CFC regulations because of the problem of depletion of the ozone layer. Then, R134a is used as a substitute refrigerant for R12.
Fluorohydrocarbon-based refrigerants containing no chlorine (HF)
C, FC) are being studied for refrigerators (for example,
See Japanese Patent Application Laid-Open No. 1-271491).
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、冷媒Ｒ
１３４ａは現在使われている鉱物油やアルキルベンゼン
油等の冷凍機油との相溶性が悪く、圧縮機への油の戻り
の悪化や寝込み起動時の分離冷媒の吸い上げなどから圧
縮機の潤滑不良に至る問題があった。However, the refrigerant R
134a has poor compatibility with currently used refrigerating machine oils such as mineral oil and alkylbenzene oil, leading to poor lubrication of the compressor due to poor return of oil to the compressor, suction of separated refrigerant at the time of stagnation startup, etc. There was a problem.
【０００４】このため、本発明者らは冷媒Ｒ１３４ａと
相溶性のある冷凍機油としてポリオールエステル系油を
検討した。しかし、このポリオールエステル系油は冷媒
圧縮機に使用する場合に、熱により分解して生成する脂
肪酸で摺動部材に腐食を起こさせ、摩耗を生じさせるこ
とが知られている。[0004] Therefore, the present inventors have studied a polyol ester-based oil as a refrigerating machine oil compatible with the refrigerant R134a. However, it is known that when this polyol ester-based oil is used in a refrigerant compressor, the sliding member is corroded by fatty acids generated by being decomposed by heat and causes abrasion.
【０００５】そして、本発明者らは冷媒としてＲ１３４
ａと冷凍機油としてポリオールエステル系油とを組合わ
せて冷媒圧縮機に使用すべく研究を重ねた結果、上記問
題の他に、ポリオールエステル系油は、水分の影響によ
り加水分解を起こして全酸化が上昇し、金属石鹸が生成
されてスラッジとなり、冷凍サイクルに悪影響を与えた
り、酸素や塩素の影響により、分解、酸化劣化、重合反
応が起こり、金属石鹸や高分子スラッジが生成されて冷
凍サイクルに悪影響を与えることをつきとめた。[0005] Then, the present inventors used R134 as a refrigerant.
As a result of repeated studies to use a in combination with a polyol ester-based oil as a refrigerating machine oil in a refrigerant compressor, the polyol ester-based oil undergoes hydrolysis due to the influence of moisture to cause total oxidation in addition to the above problems. Temperature rises, metal soap is generated and becomes sludge, which adversely affects the refrigeration cycle, and decomposition and oxidative deterioration and polymerization reactions occur due to the influence of oxygen and chlorine, and metal soap and polymer sludge are generated and the refrigeration cycle Was found to have an adverse effect on.
【０００６】一方、冷媒圧縮機の密閉容器には、冷媒の
吸入管や吐出管やチャージ管等のパイプが接続されてお
り、これらパイプの開口には、ゴム材料からなる封止栓
が圧入されている。On the other hand, pipes such as a refrigerant suction pipe, a discharge pipe and a charge pipe are connected to the closed container of the refrigerant compressor, and a sealing plug made of a rubber material is press-fitted into the openings of these pipes. ing.
【０００７】しかし、上記ゴム材料からなる封止栓は、
その材料特性から水分透過性が大きく、冷媒圧縮機を長
期に渡って保管しておくと１ケ月に７０ｐｐｍ程度の水
分が増加し、上述した問題を助長してしまうという問題
があった。この問題は封入オイルをポリオールエーテル
系油とした場合でも同様である。However, the sealing plug made of the above rubber material is
Due to the material characteristics, the water permeability is large, and when the refrigerant compressor is stored for a long period of time, the water content increases by about 70 ppm per month, which causes the problem described above. This problem is the same even when the encapsulated oil is a polyol ether type oil.
【０００８】尚、この問題に対処する方法として、図６
に示すように、パイプ１００に圧入されるゴム製の封止
栓１０１の中央に溝１０２を形成し、この溝１０２にピ
ン１０３を圧入してシール性を高める方法もあるが、こ
の場合でも経時的な変化により溝１０２とピン１０３の
間の隙間から外気が封止栓１０１の微小な孔を通って圧
縮機の内部に浸入してしまい、依然として部品の酸化や
油の加水分解による劣化が生じてしまい十分な効果が得
られない。As a method for dealing with this problem, FIG.
As shown in FIG. 2, there is also a method of forming a groove 102 in the center of a rubber sealing plug 101 to be press-fitted into a pipe 100 and press-fitting a pin 103 into this groove 102 to enhance the sealing property. Air changes into the compressor through the minute holes of the sealing plug 101 from the gap between the groove 102 and the pin 103, and still deteriorates due to oxidation of components and hydrolysis of oil. It is not possible to obtain a sufficient effect.
【０００９】この発明は上記の問題を解決するもので、
塩素を含まない弗化炭化水素系冷媒（例えばＲ１３４
ａ、Ｒ１２５、Ｒ３２単体又はその混合冷媒）と、それ
との相溶性のあるポリオールエステル系油又はポリオー
ルエーテル系油等の極性の高い油とを冷凍機油として使
用したときの上記の問題を解決し、長期保存しても上記
油の加水分解を増加させない冷媒圧縮機の封止栓装置を
提供することを目的とする。The present invention solves the above problems,
Chlorine-free fluorinated hydrocarbon-based refrigerant (for example, R134
a, R125, R32 simple substance or a mixed refrigerant thereof) and a highly polar oil such as a polyol ester oil or a polyol ether oil having compatibility therewith, and solving the above-mentioned problems when used as a refrigerating machine oil, An object of the present invention is to provide a sealing stopper device for a refrigerant compressor, which does not increase the hydrolysis of the oil even after long-term storage.
【００１０】[0010]
【課題を解決するための手段】本発明は、塩素を含まな
い弗化炭化水素系冷媒と、ポリオールエステル系油また
はポリオールエーテル系油等の極性の高い油を基油とし
た冷凍機油とを密閉容器内に封入すると共に、この密閉
容器に接続されたパイプに封止栓を装着した冷媒圧縮機
において、前記封止栓は、その軸心部に形成された溝
と、この溝内に圧入されたピンとで構成され、このピン
は、低温時にストレート形状となり、かつ、高温時に径
方向外方へ突出するリブを形成する形状記憶合金製の筒
状体にて形成されている構成としたものである。According to the present invention, a chlorine-free fluorohydrocarbon type refrigerant and a refrigerating machine oil containing a highly polar oil such as a polyol ester type oil or a polyol ether type oil as a base oil are hermetically sealed. In a refrigerant compressor that is sealed in a container and has a sealing plug attached to a pipe connected to the closed container, the sealing plug is press-fitted into a groove formed in an axial center portion thereof and the groove. The pin has a straight shape when the temperature is low and is formed by a tubular body made of a shape memory alloy that forms ribs that project radially outward when the temperature is high. is there.
【００１１】[0011]
【発明の実施の形態】以下この発明を図に示す実施例に
基いて説明する。図１は回転型圧縮機の縦断面図、図２
は封止栓装置の断面図、図３及び図４はピンの正面図で
ある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings. 1 is a vertical sectional view of the rotary compressor, FIG.
Is a cross-sectional view of the sealing plug device, and FIGS. 3 and 4 are front views of the pin.
【００１２】１は密閉容器で、この容器内には上側に電
動要素２が、下側にこの電動要素によって駆動される回
転圧縮要素３が夫々収納されている。電動要素２は有機
系材料で絶縁された巻線４を有する固定子５とこの固定
子の内側に設けられた回転子６とで構成されている。回
転圧縮要素３はシリンダ７と、回転軸８の偏心部９によ
ってシリンダ７の内壁に沿って回転させるローラ１０
と、このローラの周面に圧接されてシリンダ７内を吸込
側と吐出側とに区画するようにバネ１１で押圧されるベ
ーン１２と、シリンダ７の開口を封じるとともに、回転
軸８を軸支する上部軸受１３及び下部軸受１４とで構成
されている。Reference numeral 1 denotes a closed container in which an electric element 2 is housed on the upper side and a rotary compression element 3 driven by the electric element is housed on the lower side. The electric element 2 is composed of a stator 5 having a winding 4 insulated with an organic material, and a rotor 6 provided inside the stator. The rotary compression element 3 includes a cylinder 7 and a roller 10 that rotates along an inner wall of the cylinder 7 by an eccentric portion 9 of a rotation shaft 8.
A vane 12 is pressed against the peripheral surface of the roller and is pressed by a spring 11 so as to partition the inside of the cylinder 7 into a suction side and a discharge side, and seals an opening of the cylinder 7 while supporting the rotating shaft 8. Upper bearing 13 and lower bearing 14.
【００１３】そして、上部軸受１３にはシリンダ７の吐
出側と連通する吐出孔１５が設けられている。また、上
部軸受１３には吐出孔１５を開閉する吐出弁１６と、こ
の吐出弁を覆うように吐出マフラ１７とが取付けられて
いる。ローラ１０とベーン１２とは鉄系材料で形成され
ている。The upper bearing 13 is provided with a discharge hole 15 which communicates with the discharge side of the cylinder 7. Further, a discharge valve 16 that opens and closes the discharge hole 15 and a discharge muffler 17 that covers the discharge valve are attached to the upper bearing 13. The roller 10 and the vane 12 are made of an iron-based material.
【００１４】密閉容器１内の底部には、トリメチロール
プロパンやペンタエリスリトール等の３価以上のポリオ
ールと、直鎖又は側鎖のアルキル系脂肪酸とを無触媒で
重合した原料からなり、流動点が−５０℃、二液分離温
度が−３０℃、全酸価が０．０１ｍｇＫＯＨ／ｇ以下
で、粘度が４０℃で３２ｃｓｔ、粘度指数が９５のポリ
オールエステル油のオイル１８が貯溜されている。The bottom of the closed container 1 is made of a raw material obtained by polymerizing a trivalent or higher valent polyol such as trimethylolpropane or pentaerythritol and a linear or side chain alkyl fatty acid without a catalyst, and has a pour point. Oil 18 of polyol ester oil having a temperature of -50 ° C, a two-liquid separation temperature of -30 ° C, a total acid value of 0.01 mgKOH / g or less, a viscosity of 32 cst at 40 ° C and a viscosity index of 95 is stored.
【００１５】前記回転圧縮機及びこの圧縮機が接続され
る冷凍サイクルには、塩素を含まない弗化炭化水素系冷
媒、例えばＲ１３４ａ単体、或いはＲ１３４ａとＲ３２
とＲ１２５との２種、又３種を混合した非共沸混合冷媒
が封入されている。Ｒ１３４ａは、純度が９９．９７ｗ
ｔ％で、塩素系冷媒の混入が５６ｐｐｍに調整される。In the rotary compressor and the refrigerating cycle to which the compressor is connected, a chlorine-free fluorohydrocarbon refrigerant such as R134a alone or R134a and R32 is used.
A non-azeotropic mixed refrigerant obtained by mixing two kinds or three kinds of R125 and R125 is enclosed. R134a has a purity of 99.97w
At t%, the mixture of chlorine-based refrigerant is adjusted to 56 ppm.
【００１６】そして、オイル１８は回転圧縮要素３の摺
動部材であるローラ１０とベーン１２との摺動面を潤滑
している。The oil 18 lubricates the sliding surface of the vane 12 and the roller 10 which is a sliding member of the rotary compression element 3.
【００１７】１９は密閉容器１に取付けてシリンダ７の
吸入側に冷媒を案内する吸入管、２０は密閉容器１の上
壁に取付けられて回転圧縮要素３で圧縮されて電動要素
２を介して密閉容器１外に冷媒を吐出する吐出管であ
る。Reference numeral 19 is a suction pipe attached to the closed container 1 to guide the refrigerant to the suction side of the cylinder 7. Reference numeral 20 is attached to the upper wall of the closed container 1 and is compressed by the rotary compression element 3 via the electric element 2. A discharge pipe for discharging the refrigerant to the outside of the closed container 1.
【００１８】２１は前記吸入管１９及び吐出管２０の開
口に圧入により装着された封止栓である。この封止栓２
１はクロロプレンゴム材料にて形成されており、鍔部２
２と、その軸心部に形成された溝２３と、この溝内に圧
入されたピン２５とで構成されている。Reference numeral 21 is a sealing plug fitted into the openings of the suction pipe 19 and the discharge pipe 20 by press fitting. This sealing plug 2
1 is made of a chloroprene rubber material and has a collar portion 2
2, a groove 23 formed in the axial center portion of the groove 2, and a pin 25 press-fitted into the groove.
【００１９】このピン２５は、圧縮機の運転時等のよう
に周囲温度の高温時に図３の如くストレート形状とな
り、かつ、完成品の保管時等のように周囲温度の常温時
に図４の如く径方向外方へ突出するリブ２４と、位置決
となるフランジ部２６を一体的に有する形状記憶合金製
の筒状体にて形成されている。The pin 25 has a straight shape as shown in FIG. 3 when the ambient temperature is high, such as when the compressor is operating, and when the finished product is stored at ambient temperature, as shown in FIG. The rib 24 protruding outward in the radial direction and the flange portion 26 for positioning are integrally formed of a tubular body made of a shape memory alloy.
【００２０】ここで、ピン２５の装着は製造工程時にピ
ン２５を加熱して図３のようにピン２５をストレートに
した状態で溝２３に挿入することにより行う。Here, the pin 25 is mounted by heating the pin 25 during the manufacturing process and inserting the pin 25 into the groove 23 in a straight state as shown in FIG.
【００２１】この封止栓２１は、そのゴム自身の弾性に
て吸入管１９に圧入されると共に、溝２３内で径方向に
膨出するリブ２４によって吸入管１９に密着することに
より吸入管１９の開口を気密に封じている。The sealing plug 21 is pressed into the suction pipe 19 by the elasticity of the rubber itself, and is closely attached to the suction pipe 19 by the ribs 24 that radially expand in the groove 23. The airtight opening is sealed.
【００２２】ここで、回転型圧縮機の動作を説明してお
くと、吸入管１９からシリンダ７内の吸込側に流入した
冷媒Ｒ１３４ａはローラ１０とベーン１２との協働で圧
縮され、吐出孔１５を通って吐出弁１６を開放して吐出
マフラ１７内に吐出される。この吐出マフラ内の冷媒は
電動要素２を介して吐出管２０から密閉容器１外に吐出
される。そして、オイル１８は回転圧縮要素３のローラ
１０やベーン１２等の摺動部材の摺動面に供給されて潤
滑を行っている。また、シリンダ７内で圧縮された冷媒
が低圧側にリークしないようにしている。The operation of the rotary compressor will now be described. The refrigerant R134a flowing from the suction pipe 19 into the suction side of the cylinder 7 is compressed by the cooperation of the roller 10 and the vane 12, and the discharge hole. The discharge valve 16 is opened through 15 to be discharged into the discharge muffler 17. The refrigerant in the discharge muffler is discharged from the discharge pipe 20 to the outside of the closed container 1 via the electric element 2. The oil 18 is supplied to a sliding surface of a sliding member such as the roller 10 and the vane 12 of the rotary compression element 3 to perform lubrication. Further, the refrigerant compressed in the cylinder 7 is prevented from leaking to the low pressure side.
【００２３】そして、吸入管１９或いは吐出管２０に圧
入された封止栓２１は、圧縮機の保管時等の周囲温度が
常温の場合には、溝２３内でピン２５のリブ２４が径方
向へ膨出しているため、ゴムの弾性力を助長してリブ２
４が封止栓２１を吸入管１９の内壁へ押し付け、封止栓
２１と吸入管１９のシール性を著しく向上させ、圧縮機
を長期間保存する場合でも空気が封止栓２１の微小な孔
を通って圧縮機の内部に浸入するようなことは殆どなく
なり、部品の酸化や油の加水分解による劣化を抑制でき
る。The sealing plug 21 press-fitted into the suction pipe 19 or the discharge pipe 20 has the rib 24 of the pin 25 in the radial direction inside the groove 23 when the ambient temperature is room temperature such as during storage of the compressor. Since it swells to the rib 2
4 presses the sealing plug 21 against the inner wall of the suction pipe 19 to remarkably improve the sealing performance between the sealing plug 21 and the suction pipe 19, and even when the compressor is stored for a long time, air is a minute hole in the sealing plug 21. There is almost no infiltration into the interior of the compressor through the passage, and deterioration due to oxidation of parts or hydrolysis of oil can be suppressed.
【００２４】尚、本実施例では塩素を含まない弗化炭化
水素系冷媒としてＲ１３４ａ、オイルとしてポリオール
エステル系油を例に説明したが、これに限定されるもの
ではなく、他のＨＦＣの冷媒やそれらの混合冷媒、又は
他のエーテル油等のような極性の高い油に対しても同様
の作用効果を奏する。In the present embodiment, R134a was used as an example of a chlorine-free fluorohydrocarbon refrigerant and polyol ester oil was used as an oil, but the present invention is not limited to this, and other HFC refrigerants and Similar effects can be obtained even with such mixed refrigerants or other highly polar oils such as ether oils.
【００２５】[0025]
【発明の効果】以上のようにこの発明によれば、封止栓
は、圧縮機の保管時等のように周囲温度が常温の場合に
は、溝内でピンのリブが径方向へ膨出し、ゴムの弾性力
を助長してリブが封止栓を吸入管の内壁へ押し付け、封
止栓と吸入管のシール性を著しく向上できる。従って、
圧縮機を長期間保存する場合でも空気が封止栓の微小な
孔を通って圧縮機の内部に浸入するようなことは殆どな
くなり、部品の酸化や油の加水分解による劣化を抑制で
きる。As described above, according to the present invention, when the ambient temperature is room temperature such as when the compressor is stored, the sealing plug has the rib of the pin bulging radially in the groove. The ribs press the sealing plug against the inner wall of the suction pipe by promoting the elastic force of the rubber, and the sealing property between the sealing plug and the suction pipe can be significantly improved. Therefore,
Even when the compressor is stored for a long period of time, air hardly penetrates into the inside of the compressor through the minute holes of the sealing plug, and deterioration of parts due to oxidation or hydrolysis of oil can be suppressed.
【図１】この発明の一実施例を示す回転型圧縮機の縦断
面図である。FIG. 1 is a longitudinal sectional view of a rotary compressor showing one embodiment of the present invention.
【図２】封止装置の要部断面図である。FIG. 2 is a sectional view of a main part of a sealing device.
【図３】高温時のピンの正面図である。FIG. 3 is a front view of the pin at a high temperature.
【図４】常温時のピンの正面図である。FIG. 4 is a front view of the pin at room temperature.
【図５】従来例を示す封止装置の要部断面図である。FIG. 5 is a sectional view of a main part of a sealing device showing a conventional example.
１ 密閉容器 ３ 回転圧縮要素 １０ ローラ １２ ベーン １８ オイル ２１ 封止栓 ２３ 溝 ２４ リブ ２５ ピン ２６ フランジ 1 Airtight Container 3 Rotating Compression Element 10 Roller 12 Vanes 18 Oil 21 Sealing Plug 23 Groove 24 Rib 25 Pin 26 Flange
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ２２Ｋ 1:00 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI technical display C22K 1:00
Claims (1)
ポリオールエステル系油またはポリオールエーテル系油
等の極性の高い油を基油とした冷凍機油とを密閉容器内
に封入すると共に、この密閉容器に接続されたパイプに
封止栓を装着した冷媒圧縮機において、前記封止栓は、
その軸心部に形成された溝と、この溝内に圧入されたピ
ンとで構成され、このピンは、低温時にストレート形状
となり、かつ、高温時に径方向外方へ突出するリブを形
成する形状記憶合金製の筒状体にて形成されていること
を特徴とする冷媒圧縮機。1. A fluorohydrocarbon-based refrigerant containing no chlorine,
Refrigerant compressor in which a refrigerator oil containing a highly polar oil such as polyol ester oil or polyol ether oil as a base oil is enclosed in a closed container, and a pipe connected to the closed container is equipped with a sealing plug. In, the sealing plug is
It is composed of a groove formed in its axial portion and a pin press-fit into this groove. This pin has a straight shape at low temperature and a rib protruding radially outward at high temperature. A refrigerant compressor characterized by being formed of a tubular body made of an alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33796895A JPH09151875A (en) | 1995-11-30 | 1995-11-30 | Refrigerant compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33796895A JPH09151875A (en) | 1995-11-30 | 1995-11-30 | Refrigerant compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09151875A true JPH09151875A (en) | 1997-06-10 |
Family
ID=18313694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33796895A Pending JPH09151875A (en) | 1995-11-30 | 1995-11-30 | Refrigerant compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09151875A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004527689A (en) * | 2000-05-18 | 2004-09-09 | フーゴ フォーゲルザング マシーネンバウ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Rotor type pump |
| KR100455422B1 (en) * | 2002-03-14 | 2004-11-06 | 주식회사 엘지이아이 | Sealing device for hermetic compressor unit |
| KR100498375B1 (en) * | 2002-11-19 | 2005-07-01 | 엘지전자 주식회사 | Sealing rubber and fabrication method thereof for preventing gas leakage in compressor |
| KR100728595B1 (en) * | 2006-03-03 | 2007-06-14 | 주식회사 진영알앤에스 | Manufacture method of car air conditioner compressor oil stopper |
-
1995
- 1995-11-30 JP JP33796895A patent/JPH09151875A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004527689A (en) * | 2000-05-18 | 2004-09-09 | フーゴ フォーゲルザング マシーネンバウ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Rotor type pump |
| KR100455422B1 (en) * | 2002-03-14 | 2004-11-06 | 주식회사 엘지이아이 | Sealing device for hermetic compressor unit |
| KR100498375B1 (en) * | 2002-11-19 | 2005-07-01 | 엘지전자 주식회사 | Sealing rubber and fabrication method thereof for preventing gas leakage in compressor |
| KR100728595B1 (en) * | 2006-03-03 | 2007-06-14 | 주식회사 진영알앤에스 | Manufacture method of car air conditioner compressor oil stopper |
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