JPS60173388A - Enclosed rotary electric compressor - Google Patents

Abstract

PURPOSE:To prevent sliding portions from being lubricated insufficiently due to oil foaming, by protrusively providing a disk flange on the peripheral portion of a cylinder block located below the surface of lubricating oil, so that the disk flange is placed in contact with the inside surface of an enclosed container, and by providing oil passages in the disk flange. CONSTITUTION:The peripheral portion of a disk flange 17 protrusively provided on the peripheral portion of the end bearing 6 of a compressor in an enclosed container 1 is placed in contact with the inside surface of the container. Plural holes 17a extend as oil passages through the flange 17. As a result, lubricating oil 14 is divided into an upper and a lower layers by the flange 17 so that even if an oil foaming phenomenon takes place on the surface 14a of the lubricating oil 14 which is in contact with coolant gas, bubbles do not reach the lower layer. For that reason, the lubricating oil supplied to sliding portions is always retained in the enclosed container 1.

Description

【発明の詳細な説明】 〔発明の技術分野〕 この発明は密閉形回転式電動圧縮機の給油構造に係り、
特（（冷媒ガスと潤滑油が混入して気泡状態となること
により生じる給油の潤滑不良を防止。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an oil supply structure for a sealed rotary electric compressor,
Special ((Prevents lubrication failure caused by refrigerant gas and lubricating oil mixing and forming bubbles).

した密閉形回転式電動圧縮機に関するものである。This invention relates to a sealed rotary electric compressor.

〔従来技術〕[Prior art]

第１図は実開昭５７−１２１７９５号公報に示された従
来の密閉形回転式電動圧縮機で、図において、１は密閉
容器、２は電動機の固定子で、笛閉容器１の内壁に装着
されている。３は同じく回転子で、クランク軸４と固着
されている。５はクランク４）１１４の主軸受、６は端
軸受で、シリンダ７にポルト１０で固定されている。８
（は圧縮室で、クランク軸４の偏心部４ａおよびその外
周に装着されるローリングピストン９によってシリンダ
７の内周壁に沿って偏心回転し、高圧側と低圧側とに区
分される。１１け圧縮ガスの脈動を防止する吐出マフラ
ー、１４は密閉容器１の底部ｒｉｍ貯えられた潤滑油で
ある。４ｂＩ′ｉクランク軸４に設けられた潤滑油の通
路で、下端に吸油管１５とその上方に螺旋羽根が設けで
ある。Fig. 1 shows a conventional closed type rotary electric compressor disclosed in Japanese Utility Model Application Publication No. 57-121795. It is installed. Similarly, 3 is a rotor, which is fixed to the crankshaft 4. 5 is a main bearing of the crank 4) 114, and 6 is an end bearing, which is fixed to the cylinder 7 with a port 10. 8
( is a compression chamber, which rotates eccentrically along the inner peripheral wall of the cylinder 7 by the eccentric part 4a of the crankshaft 4 and the rolling piston 9 attached to its outer periphery, and is divided into a high pressure side and a low pressure side. A discharge muffler 14 for preventing gas pulsation is lubricating oil stored in the bottom rim of the closed container 1. 4bI'i A lubricating oil passage provided in the crankshaft 4, with an oil suction pipe 15 at the lower end and an oil suction pipe 15 above it. Equipped with spiral blades.

次に動作について説明する。′電動（幾によりクランク
軸４が回転駆動され、圧縮室８の低圧側へ冷媒ガスが供
給されると、この冷媒ガスはクランク軸４の偏心都４ａ
によってベーン（図示せず）を介して高圧側へ移り圧縮
される。圧縮された冷媒ガスは吐出ボート、吐出−ｊｆ
　＜図示せす）、吐出マフラー１１を通って密閉容器ｌ
内に吐出され、吐出管１２７）・ら冷凍回路へ供給され
る。そして冷凍回路でエネルギーを放出し低圧となった
冷媒ガスは吸入管１３から再び圧縮室８の低圧側へ供給
され上記動作をくり返す。上記の圧縮工程においてクラ
ンク軸４、主軸受５、端軸受６およびローリングピスト
ン９などの谷拮勤部の＠滑作用は、クランク軸４の下端
の吸油管１５から毛管現象によ多側滑油１４を吸入し、
螺旋羽根１６によｐ引上げられ遠心力によって給油口か
ら給油される。そして潤滑作用後の潤滑油は自重により
′１す１；閉容器１の底部に再び戻る。Next, the operation will be explained. ' When the crankshaft 4 is rotationally driven by an electric motor and refrigerant gas is supplied to the low pressure side of the compression chamber 8, this refrigerant gas is supplied to the eccentric center 4a of the crankshaft 4.
is transferred to the high pressure side via vanes (not shown) and compressed. The compressed refrigerant gas is discharged from the discharge boat, discharge-jf
(not shown), the airtight container l passes through the discharge muffler 11
It is discharged into the refrigeration circuit through the discharge pipe 127). Then, the refrigerant gas, which has released energy in the refrigeration circuit and has become low pressure, is again supplied from the suction pipe 13 to the low pressure side of the compression chamber 8, and the above operation is repeated. In the above compression process, the sliding action of the valley antagonistic parts of the crankshaft 4, main bearing 5, end bearing 6, rolling piston 9, etc. is caused by capillary action from the oil suction pipe 15 at the lower end of the crankshaft 4. Inhale 14,
It is pulled up by the spiral blade 16 and refueled from the refueling port by centrifugal force. After the lubricating action, the lubricating oil returns to the bottom of the closed container 1 due to its own weight.

上記のように構成した従来の回転式策動圧縮機では、潤
滑油１４はクランク軸４などの回転部によって攪拌され
て密閉容器１内の冷媒ガスと混合し気泡化する。この気
泡は特に夜間々ど長時間に装置を停止する間に冷媒ガス
が油中に溶解または液化した状態で起動することにより
撹拌された場合が特に著しく、か」？ケ油１４は気泡と
共に吐出管１２から密閉容器１外へ持出され、この結果
、潤滑油１４の液面１．４　ａが吸油貿１５より低くな
る場合もある。このような場合では給油不足でＪｘｒ動
部が焼き付いてしまったり、また気泡を多く含んだ潤滑
油１４を吸入した場合も潤滑不足を生じる欠点があった
。In the conventional rotary maneuvering compressor configured as described above, the lubricating oil 14 is agitated by a rotating part such as the crankshaft 4, mixes with the refrigerant gas in the closed container 1, and becomes bubbles. These bubbles are particularly noticeable when the equipment is turned off for long periods of time, such as overnight, and is agitated by starting up with refrigerant gas dissolved or liquefied in the oil. The lubricating oil 14 is carried out of the closed container 1 from the discharge pipe 12 along with air bubbles, and as a result, the liquid level 1.4a of the lubricating oil 14 may become lower than the oil absorption level 15. In such a case, the JXR moving parts may seize due to insufficient lubrication, and if the lubricating oil 14 containing many bubbles is inhaled, there is a drawback that lubrication may be insufficient.

〔発明の概要〕[Summary of the invention]

この発明は上記のような従来のものの欠点を除去する／
こめになされたもので、潤滑油面よシ下方へ位置する圧
縮要素部分の外周部に、密閉容器に当接するかあるいは
僅かな間隙を設けて円板状のつば部を突設し、つば部に
抽選流部を設けたことによシ、潤滑油の泡立ち現象によ
り密閉容器外への潤滑油の流出による油面低下および気
泡の混合した潤ＰＲ油の吸油管からの吸入を防止した密
閉形回転式電動圧縮機を提供することを目的としている
。This invention eliminates the drawbacks of the conventional ones as mentioned above.
A disc-shaped flange is protruded from the outer periphery of the compression element located below the lubricating oil surface, either in contact with the sealed container or with a slight gap. By installing a raffle flow part in the sealing type, it is possible to prevent the lubricating oil from leaking out of the sealed container due to the bubbling phenomenon of the lubricating oil, preventing the oil level from dropping and preventing the suction of lubricating PR oil mixed with air bubbles from the oil suction pipe. The purpose is to provide a rotary electric compressor.

〔発明の実施例〕[Embodiments of the invention]

以下この発明の実施例を図について説明ツーる。 Embodiments of the present invention will be described below with reference to the drawings.

第２図において、第１図と同一符号は同一部分な示すも
のであるので説明は省略する。１７は端仰］受６の外周
部［Ｘに突設した円板状のつば部で、このつｔｆｆｌ１
７の外周部は密閉容器１の内壁て当接し、あるいは僅か
な間隙を設げている。そしてつば部１７Ｖこけ第４図に
示すように抽油流部となる複数の孔１７ａが貫通してい
る。In FIG. 2, the same reference numerals as in FIG. 1 indicate the same parts, so the explanation will be omitted. 17 is a disc-shaped collar protruding from the outer periphery of the support 6 [X];
The outer periphery of the container 7 is in contact with the inner wall of the closed container 1, or a slight gap is provided therebetween. As shown in FIG. 4, the flange 17V has a plurality of holes 17a passing therethrough, which serve as oil extraction flow areas.

」−記のようＰＣｊｉｌｔ成したことにより、端軸受６
から突設したつば部１７によシｎ’ｊＪ清油１４ｉｄ上
層と下層とに分離する。すなわち、冷媒ガスと潤滑油１
４の接している油面１４ａに気′？（シが発生しても下
層の潤滑油に気泡が達するの−を防ぐことができ、各摺
動部の潤滑に必要な油量は常時密閉容器１内に確保でき
る。また冷媒ガスを吐出した際Ｖζ油中に混入する気泡
もつば部１７より下層の潤滑油１４に到達しない。さら
に潤滑に使用され再び１ｉ７３滑油１４へ戻った油はっ
は部１７に貫通した孔］、　７　ａから通って下層の潤
滑油中へ導びくことができる。” - By completing the PC jilt as described above, the end bearing 6
The flange portion 17 protruding from the base separates the clean oil 14id into an upper layer and a lower layer. That is, refrigerant gas and lubricating oil 1
Is there any air in the oil surface 14a that is in contact with 4? (Even if bubbles occur, air bubbles can be prevented from reaching the lubricating oil in the lower layer, and the amount of oil necessary for lubrication of each sliding part can always be secured in the closed container 1. Also, if the refrigerant gas is discharged At the same time, air bubbles mixed in the Vζ oil do not reach the lubricating oil 14 below the flanged portion 17.Furthermore, the oil that is used for lubrication and returns to the 1i73 lubricating oil 14 returns to the lubricating oil 14]. and into the underlying lubricating oil.

なお、実施例では抽油流部として孔１７ａを例にとった
が、その他第５図に示すようにつば部１７の外周部に複
数の切欠いた？４１７　ｂとすることであっても上記と
同様の作用が得られる。In addition, in the embodiment, the hole 17a was used as an oil extraction flow part, but as shown in FIG. 417b, the same effect as above can be obtained.

第６図はシリンダ７の外周部に円板状のつば部１８を密
閉容器１の内壁に当接し、あるいは伯゛ｊかな間隙を設
けて突設したもので、このつば部１８に第８図のように
抽油流部となる孔１８ａまたは第９図のように溝１８ｂ
を形成した例である。FIG. 6 shows a disc-shaped flange 18 on the outer periphery of the cylinder 7 that is in contact with the inner wall of the closed container 1 or protrudes with a small gap. A hole 18a serving as an oil extraction flow section as shown in FIG. 9 or a groove 18b as shown in FIG.
This is an example of forming a .

第１Ｏ図は主軸受５の外周部に円板状のつば部工９を密
閉容器１の内壁に幽接し、るるいは僅かな間隙を設けて
突設したもので、このっぽ都１９に第１２図のように抽
選流部となる孔１９ａまたは第１３図のように溝１９ｂ
を形成した例である。Fig. 1O shows a disk-shaped collar 9 on the outer periphery of the main bearing 5, which is in direct contact with the inner wall of the sealed container 1 and protrudes with a slight gap. A hole 19a which becomes a lottery flow part as shown in Fig. 12 or a groove 19b as shown in Fig. 13.
This is an example of forming a .

さらに第１４図は吐出マフラー１１の外周部に円板状の
つば部２０を密閉容器１の内壁に当接し、あるいは僅か
な間隙を設けて突設したもので、つば部２０に第１６図
のように抽油流部となる孔２０ａまたは第１７図のよう
に溝２０ｂを形成した例である。Furthermore, FIG. 14 shows a disc-shaped collar 20 on the outer periphery of the discharge muffler 11, which is in contact with the inner wall of the closed container 1 or protrudes with a slight gap. This is an example in which a hole 20a serving as an oil extraction flow section or a groove 20b as shown in FIG. 17 is formed.

上記いずれの実施例においてもつば部１８，１９゜２０
が＠滑油面下に位置するので第２図の実画例と同様の作
用が行なえることは言うまでもない。In any of the above embodiments, the collar portions 18, 19° 20
Needless to say, since it is located below the lubricating oil surface, the same effect as in the actual example shown in FIG. 2 can be performed.

またつば部に形成した抽油流部の数は少なくとも１個所
以上あればよい。Further, the number of oil extraction flow portions formed in the brim portion may be at least one or more.

〔発明の効果〕〔Effect of the invention〕

以上のようにこの発明によれば、圧縮要素の端軸受、主
軸受、シリンダおよび吐出マフラーのいずれかの外周部
に密閉容器に当接するかあるいは僅かな間隙を設けて円
板状のつば部を突設し、っ目：部に抽油流部を形成した
ので、潤滑油の泪立ち現象が潤滑油下層へ達するのを防
止でき、これによシ気泡と共に潤滑油が密閉容器外へ流
出して潤滑油面の低下が防止できる上、気泡の混合した
７１”＋］滑油が吸油管から吸入して各摺動部へ逼する
ことも防止し、常に安定した給油を行ない良好な潤滑状
態を保てる。またつば部の取付けはヴルトなどで簡単に
固定できるため低コストに製作でき、かつ信頼性の高い
回転式電動圧縮機となる。As described above, according to the present invention, a disc-shaped collar is provided on the outer periphery of any one of the end bearing, main bearing, cylinder, and discharge muffler of the compression element, either in contact with the closed container or with a slight gap. Since an oil extraction flow part is formed at the protruding part, it is possible to prevent the lubricating oil from reaching the lower layer of the lubricating oil, thereby preventing the lubricating oil from flowing out of the sealed container along with air bubbles. This not only prevents the lubricating oil level from dropping, but also prevents 71"+] lubricating oil mixed with air bubbles from being sucked in from the oil suction pipe and flowing into each sliding part, ensuring stable lubrication at all times and maintaining a good lubrication condition. In addition, the collar can be easily fixed using bolts, etc., making it a highly reliable rotary electric compressor that can be manufactured at low cost.

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

第１図は従来の冨閉形回転式電動圧縮機の断面図、第２
図はこの発明による密閉形回転式′１氏動圧縮機の断面
図、第３図は従来の端軸受の斜視図、第４．５図はこの
発明による端軸受のそれぞれの斜視図、第６図は他の実
施例の圧縮機の断面図、第７図は従来のシリンダの斜視
図、第８，９図はこの発明によるシリンダのそれぞれの
斜視図、第１０図はその他の実施例の圧縮機の１ｖｔ面
図、第１１図は従来の主軸受の斜視図、第１２，１３は
ＩＵこの発明による主軸受のそれぞれの斜視図、第１４
図はその他の実施例の圧縮機の断面図、第１５図は従来
の吐出マフラーの斜視図、第１６．１７図はこの発明に
よる吐出マフラーのそれぞれの斜視図である。 １・・・密閉容器、３・・・電動機回転子、４・・・ク
ランク軸、４ａ・・・偏心部、５・・・主軸受、６・・
・端剣党、７・・・シリンダ、８・・・圧縮室、９・・
ローリングピストン、１１・・・吐出マフラー、１４・
・・潤滑油、１５・・・吸油管、１７．１８，１９．２
０・・・つば部、］、７ａ、１８ａ、１９ａ、２０ａ・
一孔、１７ｂ。 １８ｂ、１９ｂ、２０ｂ・・・溝。 なお、ト４中、同−杓°号は同−又は相当部分を示す。 代理人　大　岩　増　雄 第１図 第２図 第３図 第６図 第７図 第８図 第１０　図 第１１図 第１２図 第１４図 第１５図 第１６図 １ ？ｌＪｉ） 第１頁の続き ［株］発　明　者　堀　内　保　信　静岡市小鹿３内Figure 1 is a cross-sectional view of a conventional closed-type rotary electric compressor, Figure 2
3 is a perspective view of a conventional end bearing, FIG. 4.5 is a perspective view of each end bearing according to the invention, and FIG. 7 is a perspective view of a conventional cylinder, FIGS. 8 and 9 are respective perspective views of a cylinder according to the present invention, and FIG. 10 is a compressor of another embodiment. 1vt side view of the machine, Figure 11 is a perspective view of a conventional main bearing, Figures 12 and 13 are respective perspective views of IU main bearings according to the present invention, Figure 14
15 is a perspective view of a conventional discharge muffler, and FIGS. 16 and 17 are perspective views of a discharge muffler according to the present invention. DESCRIPTION OF SYMBOLS 1... Airtight container, 3... Electric motor rotor, 4... Crankshaft, 4a... Eccentric part, 5... Main bearing, 6...
・End sword party, 7...Cylinder, 8...Compression chamber, 9...
Rolling piston, 11...Discharge muffler, 14.
...Lubricating oil, 15...Oil absorption pipe, 17.18, 19.2
0...Brim portion, ], 7a, 18a, 19a, 20a・
One hole, 17b. 18b, 19b, 20b...grooves. In addition, in (4), the same number indicates the same or equivalent part. Agent Masuo Oiwa Figure 1 Figure 2 Figure 3 Figure 6 Figure 7 Figure 8 Figure 10 Figure 11 Figure 12 Figure 14 Figure 15 Figure 16 Figure 1 ? lJi) Continued from page 1 [Co., Ltd.] Inventor Yasunobu Horiuchi Oshika 3, Shizuoka City

Claims (1)

【特許請求の範囲】 ｌ）電動機によシフランク軸を駆動し、クランク軸の偏
心部によシシリンダ内周面に沿って転動するローリング
ピストンの回転によって圧縮室内を低圧側と高圧側とに
区分する圧縮要素と、この圧縮要素を収納する蓄閉容器
とを設け、上記′１区動機は上部に圧縮要素を下部に配
置し、クランク軸下端に設けた吸油孔から潤滑油溜めの
γ閏滑油を吸入して各摺動部へ給油する密閉形回転式電
動圧縮機において、潤滑油面より下方へ位置するクラン
ク軸の端軸受、主軸受およびシリンダ、吐出マフラーの
いずれかの外周部に密閉容器に当接するかあるいは間隙
を設けて円板状のつば部を突設し、このつば部の１個所
または数個所に抽油流部を設けたことを％徴とする密閉
形回転式電動圧縮機。 ２）抽油流部はつは部に貫通した孔であることを特徴と
する特許請求の範囲第１項記載の密閉形回転式電動圧縮
機。 ３）抽油流部はっは部外周部に切欠した溝であることを
特徴とする特許請求の範囲第１項記載の密閉形回転式電
動圧縮機。[Claims] l) The compression chamber is divided into a low-pressure side and a high-pressure side by driving a shift flank shaft by an electric motor and rotating a rolling piston that rolls along the inner peripheral surface of the cylinder by an eccentric part of the crankshaft. A compression element is provided in the upper part, and a storage container is provided to store the compression element. In a sealed rotary electric compressor that sucks in oil and supplies it to each sliding part, it is sealed on the outer periphery of the crankshaft end bearing, main bearing, cylinder, or discharge muffler, which are located below the lubricating oil level. Closed type rotary electric compression characterized by a disc-shaped flange protruding from the container or with a gap therebetween, and an oil extraction flow section provided at one or several locations on the flange. Machine. 2) The hermetic rotary electric compressor as claimed in claim 1, wherein the oil extraction flow section is a hole penetrating the hole. 3) The hermetic rotary electric compressor according to claim 1, wherein the oil extraction flow section is a groove cut out on the outer periphery of the section.