JPH0422793A - Horizontal open type compressor - Google Patents

Horizontal open type compressor

Info

Publication number
JPH0422793A
JPH0422793A JP12797390A JP12797390A JPH0422793A JP H0422793 A JPH0422793 A JP H0422793A JP 12797390 A JP12797390 A JP 12797390A JP 12797390 A JP12797390 A JP 12797390A JP H0422793 A JPH0422793 A JP H0422793A
Authority
JP
Japan
Prior art keywords
oil
casing
suction
housing
scroll
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
JP12797390A
Other languages
Japanese (ja)
Other versions
JPH07101038B2 (en
Inventor
Kameichi Mizutani
水谷 亀一
Takeo Urano
浦野 武夫
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.)
Daikin Industries Ltd
Original Assignee
Daikin Industries 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 Daikin Industries Ltd filed Critical Daikin Industries Ltd
Priority to JP12797390A priority Critical patent/JPH07101038B2/en
Publication of JPH0422793A publication Critical patent/JPH0422793A/en
Publication of JPH07101038B2 publication Critical patent/JPH07101038B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

PURPOSE:To dissolve problems of power loss and oil consumption by constituting the device so that accumulated oil in the bottom part of a scroll suction chamber can be simply drained to the inner space of a casing, utilizing a drain pump to drain return oil from movable parts to the inner space of the casing. CONSTITUTION:An inner housing 6 which contains a driving shaft 3, surrounds movable parts supplied with lubricating oil, and is divided from the inner space of a casing 1, is provided in the casing 1. An oil receiver part 6a receiving return oil from movable parts supplied with lubricating oil is provided on the bottom part of the housing 6. Further, a drain oil pump 7 to drain the oil in the oil receiver part 6a to the inner space of the casing 1 is provided. An oil suction passage 8 to communicate the bottom part of a scroll suction chamber 6b to the suction side of the drain oil pump 7 is provided. Meanwhile, the inner housing 6 is formed into tightly closed state, and the capacity of the drain oil pump 7 is set so as to be larger in draining quantity than the feeding quantity of oil into the housing and make negative pressure in the housing 6.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は主として冷凍装置に使用する横型開放圧縮機に
関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a horizontal open compressor mainly used in refrigeration equipment.

(従来の技術) 従来、外部駆動源からの動力で圧縮要素を駆動するよう
にした横型開放圧縮機は、特開平2−45686号公報
に示され、また、第6図に示したように、−側を開放し
た横型ケーシング(A)内の一側方に第1スクロール(
B)及び第2スクロール(C)から成る圧縮要素(D)
を内装し、かつ、前記ケーシング(A)に、前記圧縮要
素(D)の吐出口に連通ずる吐出室(E)と区画した内
部空間(F)に吸入流体を導く吸入管(G)を開口させ
ると共に、前記圧縮要素(D)を駆動する駆動軸(H)
を前記ケーシング(A、 )の他側方開放口から外方に
突出して外部駆動源により駆動させる一方、前記駆動軸
(H)の周りにポンプハウジング(I)を設けて、該ポ
ンプハウジング(I)に、前記内部空間(F)の底部油
溜めから汲上げる潤滑油を前記駆動軸(H)の軸受部分
や前記圧縮要素(D)を偏心回転させる駆動部(J)な
ど可動部分に供給する給油ポンプ(K)を設けたものが
知られている。
(Prior Art) Conventionally, a horizontal open compressor in which a compression element is driven by power from an external drive source is disclosed in Japanese Unexamined Patent Publication No. 2-45686, and as shown in FIG. The first scroll (
B) and a compression element (D) consisting of a second scroll (C)
is installed inside the casing (A), and a suction pipe (G) is opened in the casing (A) to lead the suction fluid to an internal space (F) separated from a discharge chamber (E) that communicates with the discharge port of the compression element (D). a drive shaft (H) that drives the compression element (D);
protrudes outward from the other side opening of the casing (A, ) and is driven by an external drive source, while a pump housing (I) is provided around the drive shaft (H), and the pump housing (I) is driven by an external drive source. ), the lubricating oil pumped up from the bottom oil reservoir of the internal space (F) is supplied to movable parts such as the bearing part of the drive shaft (H) and the drive part (J) that eccentrically rotates the compression element (D). A type equipped with an oil supply pump (K) is known.

(発明が解決しようとする課題) 所が、以上の如く横型ケーシング(A)に前記圧縮要素
(D)を内装する場合、この圧縮要素(D)におけるス
クロール吸入室(N)の底部には、前記吸入管(G)か
ら前記内部空間(F)を経て導入されるガス冷媒に混入
した油や、前記圧縮要素(D)のスラスト軸受から圧縮
要素側に漏れた潤滑油が溜ることになるため、前記圧縮
要素(D)の偏心回転時、可動側スクロールの鏡板外周
面が、前記吸入室底部の油面を叩いて撹拌することにな
り、この結果、駆動軸の負荷が高くなり、動力の損失と
なる問題があるし、又、前記撹拌した潤滑油が前記吸入
室の流体に混入して外部に吐出されて油上がりが生ずる
ことになる問題があった。
(Problem to be Solved by the Invention) However, when the compression element (D) is installed inside the horizontal casing (A) as described above, the bottom of the scroll suction chamber (N) in the compression element (D) is This is because oil mixed in the gas refrigerant introduced from the suction pipe (G) through the internal space (F) and lubricating oil leaked from the thrust bearing of the compression element (D) to the compression element side will accumulate. When the compression element (D) rotates eccentrically, the outer circumferential surface of the end plate of the movable scroll hits and stirs the oil surface at the bottom of the suction chamber. As a result, the load on the drive shaft increases and the power decreases. In addition, there is a problem in that the stirred lubricating oil mixes with the fluid in the suction chamber and is discharged to the outside, resulting in oil leakage.

本発明は以上の点に鑑み発明したもので、目的は、可動
部分からの戻り油をケーシングの内部空間に排出する排
油ポンプを利用してスクロール吸入室の底部に溜る油を
ケーシングの内部空間に簡単に排出することができるよ
うにして、前記した動力損失や油上りの問題点を解消す
る点にある。
The present invention was invented in view of the above points, and the purpose is to drain oil accumulated at the bottom of the scroll suction chamber into the inner space of the casing by using an oil drain pump that discharges the return oil from the movable parts into the inner space of the casing. The purpose is to eliminate the above-mentioned problems of power loss and oil spillage by making it possible to easily discharge the oil.

(課題を解決するための手段) しかして、本発明は、横型ケーシング(1)内の一側方
に第1スクロール(2a)及び第2スクロール(2b)
から成る圧縮要素(2)を内装し、かつ、前記ケーシン
グ(1)に、前記圧縮要素(2)の吐出口に連通ずる吐
出室(11)と区画した内部空間に吸入流体を導く吸入
管(13)を開口させると共に、前記圧縮要素(2)を
駆動する駆動軸(3)を前記ケーシング(1)の他側方
開放口から外方に突出して外部駆動源により駆動させる
と共に、可動部分に潤滑油を供給する給油ポンプ(5)
を設けた横型開放圧縮機であって、前記ケーシング(1
)内に、前記駆動軸(3)を含み、前記潤滑油を供給す
る可動部分を包囲して、前記ケーシング(1)の内部空
間と区画する内部ハウジング(6)を設けて、このハウ
ジング(6)の底部に、前記可動部分へ供給する潤滑油
の前記可動部分からの戻り油を収容する油受部(6a)
を設けると共に、前記油受部(6a)内の油を前記ケー
シング(1)の内部空間に排出する排油ポンプ(7)を
設け、がっ、スクロール吸入室(6b)の底部と前記排
油ポンプ(7)の吸入側とを連通ずる油吸上げ通路(8
)を設けたのである。
(Means for Solving the Problems) Accordingly, the present invention provides a first scroll (2a) and a second scroll (2b) on one side in a horizontal casing (1).
The casing (1) is equipped with a suction pipe (1) that carries a suction fluid into an internal space defined by a discharge chamber (11) that communicates with a discharge port of the compression element (2). 13) is opened, and the drive shaft (3) that drives the compression element (2) is projected outward from the other side opening of the casing (1) and driven by an external drive source, and the movable part is Oil supply pump (5) that supplies lubricating oil
A horizontal open compressor provided with the casing (1
) is provided with an internal housing (6) that includes the drive shaft (3), surrounds the movable part that supplies the lubricating oil, and partitions it from the internal space of the casing (1). ), an oil receiver part (6a) for accommodating return oil from the movable part of the lubricating oil supplied to the movable part.
In addition, an oil drain pump (7) is provided for discharging the oil in the oil receiving portion (6a) into the internal space of the casing (1). An oil suction passage (8) that communicates with the suction side of the pump (7).
) was established.

又、内部ハウジング(6)を密閉状とし、がっ、排油ポ
ンプ(7)を、前記内部ハウジング(6)に流入する流
体の流入量より排出量が多く前記内部ハウジング(6)
内を負正にすることができる容量とし、かつ、油吸上げ
通路(8)を、前記内部ハウジング(6)に開口させて
前記排油ポンプ(7)の吸込口(7a)と連通させるの
が好ましい。
Further, the internal housing (6) is sealed, and the drain oil pump (7) is configured such that the amount of fluid discharged from the internal housing (6) is larger than the amount of fluid flowing into the internal housing (6).
The inner housing has a capacity that can be made negative or positive, and the oil suction passage (8) is opened in the inner housing (6) and communicated with the suction port (7a) of the oil drain pump (7). is preferred.

(作用) 給油ポンプ(5)により可動部分に供給する潤滑油は、
内部ハウジング(6)の底部に設ける油受部(6a)に
収容し、この油受部(6a)内の油を、排油ポンプ(7
)によりケーシング(1)の内部空間に排出するから、
前記給油ポンプ(5)により可動部分に潤滑油を確実に
供給できながら、前記排油ポンプ(7)により、前記油
受部(6a)から前記ケーシング(1)の内部空間への
排出時、スクロール吸入室(6b)内の油を、前記排油
ポンプ(7)を利用して前記ケーシング(1)の内部空
間に排出することができるので、偏心回転する可動側ス
クロールが吸入室(6b)の油面を叩いて攪拌するのを
防止でき、従って、油面を叩くことによる動力の損失を
なくすることができると共に、撹拌した潤滑油による油
上がりを少なくできるのである。
(Function) The lubricating oil supplied to the moving parts by the oil supply pump (5) is
The oil in the oil receiver (6a) is stored in the oil receiver (6a) provided at the bottom of the internal housing (6), and the oil in the oil receiver (6a) is pumped into the oil drain pump (7).
) to the internal space of the casing (1),
While the oil supply pump (5) can reliably supply lubricating oil to the movable parts, the oil drain pump (7) can discharge the oil from the oil receiver (6a) to the internal space of the casing (1). Since the oil in the suction chamber (6b) can be discharged into the internal space of the casing (1) using the oil drain pump (7), the eccentrically rotating movable scroll can drain the oil in the suction chamber (6b). It is possible to prevent the oil surface from being agitated by striking it, thereby eliminating power loss caused by striking the oil surface, and reducing oil spillage caused by the agitated lubricating oil.

又、内部ハウジング(6)を密閉状とし、かつ、排油ポ
ーンブ(7)を、前記内部ハウジング(6)に流入する
流体の流入量より排出量が多くして、前記内部ハウジン
グ(6)内を負圧とし、かつ、油吸上げ通路(8)を、
前記内部ハウジング(6)に開口させて前記排油ポンプ
(7)の吸込口(7a)と連通させることにより、前記
内部ハウジング(6)内の圧力を圧縮要素(2)内の圧
力より、低圧にできるので、前記負圧を利用して前記吸
入室(6b)底部の油を油受部(6a)内に汲上げるこ
とができ、従って、前記油吸上げ通路(8)を、内部ハ
ウジング(6)内に開口させるだけの簡単な構造にでき
るのである。
Further, the internal housing (6) is sealed, and the oil drain pump (7) is configured such that the amount of fluid discharged is larger than the amount of fluid flowing into the internal housing (6). is set to negative pressure, and the oil suction passage (8) is set to negative pressure, and the oil suction passage (8) is
By opening the internal housing (6) and communicating with the suction port (7a) of the oil drain pump (7), the pressure inside the internal housing (6) is lower than the pressure inside the compression element (2). Therefore, the oil at the bottom of the suction chamber (6b) can be pumped up into the oil receiver (6a) using the negative pressure, and the oil suction passage (8) can be drawn up into the inner housing (6a). 6) It can be made into a simple structure by just opening it inside.

(実施例) 図において、(1)は−側を閉鎖し、他側の中心部を開
放すると共に底部に底部油溜め(1a)をもった横型ケ
ーシングであって、このケーシング(1)内の一側方に
、第1スクロール(2a)及び第2スクロール(2b)
から成る圧縮要素(2)を内装して、前記ケーシング(
1)内の一側部に、前記第1スクロール(2a)の中心
部に設ける吐出口(2c)に連通ずる吐出室(11)を
形成し、他側部には、前記吐出室(11)と区画される
内部空間(12)を形成している。又、前記ケーシング
(1)には、前記内部空間(12)に吸入流体を導く吸
入管(13)と、前記吐出室(11)の高圧流体を外部
に排出する吐出管(14)とをそれぞれ設けると共に、
前記圧縮要素(2)を駆動する駆動軸(3)を前記ケー
シング(1)の他側方開放口から外方に突出して外部駆
動源により駆動させるようにしている。そして、前記圧
縮要素(2)と駆動軸(3)との間に、前記第2スクロ
ール(2b)を第1スクロール(2a)に対し偏心回転
させる駆動部(4)を設けると共に、前記駆動軸(3)
の中間部には前記底部油溜め(1a)の潤滑油を汲上げ
て前記駆動部(4)などの可動部分に供給する給油ポン
プ(5)を設けている。又、前記駆動部(4)は、前記
駆動軸(3)の一端部と一体に形成するカウンタウェイ
ト(41)とドライブビン(42)を介して連結される
スイングリンク(43)とを備えている。又、前記駆動
軸(3)には、長さ方向中間部から半径方向内方に向か
って延びる主通路と該主通路の奥部から軸方向外方に向
かって延びる分岐通路と該分岐通路から更に半径方向外
方に向かって貫通する小径通路とから成る給油通路(3
1)を設ける一方、バランスウェイト(30)を取付け
ている。
(Example) In the figure, (1) is a horizontal casing with the - side closed and the center of the other side open and with a bottom oil reservoir (1a) at the bottom. On one side, a first scroll (2a) and a second scroll (2b)
The compression element (2) consisting of the casing (
1) A discharge chamber (11) communicating with a discharge port (2c) provided at the center of the first scroll (2a) is formed on one side of the interior, and a discharge chamber (11) is formed on the other side. An internal space (12) is formed. Further, the casing (1) is provided with a suction pipe (13) that guides suction fluid into the internal space (12), and a discharge pipe (14) that discharges high-pressure fluid from the discharge chamber (11) to the outside. In addition to providing
A drive shaft (3) for driving the compression element (2) projects outward from the other side opening of the casing (1) and is driven by an external drive source. A drive section (4) for eccentrically rotating the second scroll (2b) with respect to the first scroll (2a) is provided between the compression element (2) and the drive shaft (3); (3)
An oil supply pump (5) is provided in the middle of the oil supply pump (5) for pumping up the lubricating oil from the bottom oil reservoir (1a) and supplying it to movable parts such as the drive part (4). Further, the drive section (4) includes a counterweight (41) integrally formed with one end of the drive shaft (3) and a swing link (43) connected via a drive bin (42). There is. The drive shaft (3) also includes a main passage extending radially inward from a longitudinally intermediate portion, a branch passage extending axially outward from a deep part of the main passage, and a branch passage extending axially outward from the inner part of the main passage. Furthermore, the oil supply passage (3
1), and a balance weight (30) is also installed.

しかして、第1〜4図に示した第1実施例では、前記ケ
ーシング(1)の内部空間(12)に、前記駆動軸(3
)を含み、前記駆動部(4)などの可動部分を包囲して
、前記ケーシング(1)の内部空間(12)と区画する
密閉状の内部ハウジング(6)を設けて、この内部ハウ
ジング(6)の底部に、前記駆動部(4)などの可動部
分へ供給する潤滑油の前記可動部分からの戻り油を収容
する油受部(6a)を設ける一方、前記油受部(6a)
内の油を前記ケーシング(1)の内部空間(12)に排
出する排油ポンプ(7)を設けると共に、スクロール吸
入室(6b)の底部と前記内部ハウジング(6)内とに
開口する油吸上げ通路(8)をもった小径パイプ(81
)を設けて、前記油吸上げ通路(8)を、前記排油ポン
プ(7)の吸込口(7a)と連通させたのである。
In the first embodiment shown in FIGS. 1 to 4, the drive shaft (3) is provided in the internal space (12) of the casing (1).
), a sealed internal housing (6) surrounding movable parts such as the drive unit (4) and partitioning it from the internal space (12) of the casing (1) is provided. ) is provided with an oil receiver (6a) for accommodating return oil from the movable parts of the lubricating oil supplied to the movable parts such as the drive part (4), while the oil receiver (6a)
An oil drain pump (7) is provided for discharging the oil inside the casing (1) into the internal space (12), and an oil suction pump (7) is provided which opens into the bottom of the scroll suction chamber (6b) and into the internal housing (6). Small diameter pipe (81) with raised passage (8)
) was provided to communicate the oil suction passage (8) with the suction port (7a) of the oil drain pump (7).

この油吸上げ通路(8)は、第1図の如く前記油受部(
6a)の底面に対し所定高さ上方側に開口させて、油受
部(6a)の潤滑油が前記吸入室(6b)に逆流しない
ようにするのである。
This oil suction passage (8) is connected to the oil receiving portion (
The lubricating oil in the oil receiving portion (6a) is prevented from flowing back into the suction chamber (6b) by opening upward at a predetermined height with respect to the bottom surface of the oil receiving portion (6a).

又、前記内部ハウジング(6)は、前記圧縮要素(2)
を支持する架構を兼ねるものであって、前記第1スクロ
ール(2a)との間に、前記スクロール吸入室(6b)
を設けると共に、前記駆動部(4)の収容室(6d)を
設け、この収容室(6d)の底部を、連通孔(61)を
介して前記油受部(6a)に連通させる一方、前記油受
部(6a)に対し前記収容室(6d)と反対側端部にシ
ール室(6e)を設けて、該ソール室(6e)にメカニ
カルシール(9)を内装すると共に、前記油受部(6a
)と収容室(6d)及びシール室(6e)との間に、前
記駆動軸(3)を支持する第1及び第2軸受(10)(
20)を設け、又、前記収容室(6d)の圧縮要素側端
部に、前記第2スクロール(2b)を受止めるスラスト
軸受(21)と、前記内部空間(12)とスクロール吸
入室(6b)とを連通ずる吸入路(62)とを設けると
共に、前記油受部(6a)と隣接するポンプ保持部(6
f)に前記給油ポンプ(5)と排油ポンプ(7)とを設
けている。
The inner housing (6) also includes the compression element (2).
The scroll suction chamber (6b) is provided between the scroll suction chamber (6b) and the first scroll (2a).
is provided, and a storage chamber (6d) for the drive section (4) is provided, and the bottom of the storage chamber (6d) is communicated with the oil receiver section (6a) via the communication hole (61). A seal chamber (6e) is provided at the end of the oil receiver (6a) opposite to the accommodation chamber (6d), and a mechanical seal (9) is installed in the sole chamber (6e). (6a
), and the storage chamber (6d) and the sealing chamber (6e), the first and second bearings (10) (
20), and a thrust bearing (21) for receiving the second scroll (2b) is provided at the compression element side end of the accommodation chamber (6d), and a thrust bearing (21) for receiving the second scroll (2b), and a ), and a pump holding part (62) adjacent to the oil receiving part (6a) is provided.
f) is provided with the oil supply pump (5) and the oil drainage pump (7).

これら給油ポンプ(5)と排油ポンプ(7)とは、外周
面に偏心溝(22a)(22b)をもち、前記ポンプ保
持部(6f)の嵌合孔に回転自由に挿嵌する円筒形ロー
タ(22)と、ベーン(51)(71)とを備え、前記
ロータ(22)の内面を前記駆動軸(3)の外周に相対
回転不能に嵌合すると共に、前記ポンプ保持部(6f)
に、前記偏心溝(22a)(22b)に開口する二つの
シリンダ室(63)(64)と、吐出油路(65)(6
6)とを設け、又、前記内部ハウジング(6)に、前記
偏心溝(22a)と前記底部油溜め(1a)とに開口す
る吸入油路(67)及び前記偏心溝(22b)と前記油
受部(6a)とに開口する吸入油路(68)とを設けて
、前記各シリンダ室(63)(64)に前記各ベーン(
51)(71)を内装し、これらベーンの先端を前記各
偏心溝(22a)(22b)に当接させて、前記駆動軸
(3)の駆動により前記ロータ(22)を回転し、前記
各ベーン(51)(71)を移動させて、前記底部油溜
め(1a)の潤滑油を前記吸入油路(67)から前記偏
心溝(22a)内に汲上げて前記吐出油路(65)及び
前記ロータ(22)に設ける連通路(22c)から前記
駆動軸(3)の給油通路(31)に吐出し、また、前記
油受部(6a)の潤滑油を前記吸入油路(68)から前
記偏心溝(22b)内に汲上げて吐出油路(66)から
前記内部空間(12)に排出するようにしている。
These oil supply pump (5) and oil drain pump (7) have eccentric grooves (22a) (22b) on their outer circumferential surfaces, and are cylindrical in shape and fit freely into the fitting hole of the pump holding part (6f). It includes a rotor (22) and vanes (51) and (71), the inner surface of the rotor (22) is fitted to the outer periphery of the drive shaft (3) in a relatively non-rotatable manner, and the pump holding part (6f)
, two cylinder chambers (63) (64) opening into the eccentric grooves (22a) (22b), and discharge oil passages (65) (6).
6), and the inner housing (6) is provided with a suction oil passage (67) that opens to the eccentric groove (22a) and the bottom oil sump (1a), and the eccentric groove (22b) and the oil A suction oil passage (68) opening to the receiving portion (6a) is provided, and each vane (68) is provided in each cylinder chamber (63) (64).
51) (71), and the tips of these vanes are brought into contact with the eccentric grooves (22a) and (22b), and the rotor (22) is rotated by the drive of the drive shaft (3), The vanes (51) and (71) are moved to pump up the lubricating oil in the bottom oil reservoir (1a) from the suction oil passage (67) into the eccentric groove (22a) and into the discharge oil passage (65) and into the eccentric groove (22a). The communication passage (22c) provided in the rotor (22) is discharged into the oil supply passage (31) of the drive shaft (3), and the lubricating oil in the oil receiver (6a) is discharged from the suction oil passage (68). The oil is pumped up into the eccentric groove (22b) and discharged from the discharge oil path (66) into the internal space (12).

又、前記排油ポンプ(7)は、前記駆動部(4)、スラ
スト軸受(21)、第1軸受(10)などの可動部分か
ら戻されて前記内部ハウジング(6)に流入する潤滑油
とか、或は前記スクロール吸入室(6b)などから漏れ
て内部ハウジング(6)に流入するガス冷媒とかの流体
の流入mよりttト出量が多く、前記内部ハウジング(
6〕内を負圧にできる容量に形成している。
The oil drain pump (7) also collects lubricating oil that is returned from movable parts such as the drive unit (4), the thrust bearing (21), and the first bearing (10) and flows into the internal housing (6). , or the amount of fluid such as gas refrigerant leaking from the scroll suction chamber (6b) and flowing into the internal housing (6) is larger than the inflow m,
6] It has a capacity that can create negative pressure inside.

尚、前記給油通路(31)に供給した潤滑油は、前記駆
動部(4)に供給され、この駆動部(4)から更に前記
スラスト軸受(21)に供給されると共に、前記第1及
び第2軸受(10)(20)と、前記メカニカルシール
(9)に供給されるのである。
Note that the lubricating oil supplied to the oil supply passage (31) is supplied to the drive section (4), and from this drive section (4) is further supplied to the thrust bearing (21), and is also supplied to the first and second thrust bearings. It is supplied to two bearings (10), (20) and the mechanical seal (9).

以上の如く構成した圧縮機は、外部駆動源で駆動軸(3
)を駆動することにより、給油ポンプ(5)及びり1油
ポンプ(7)が作動するのであって、前記給油ポンプ(
5)により駆動軸(3)の給油通路(31)を介して駆
動部(4)、スラス)・軸受(21) 、第1軸受(1
0)などの可動部分に供給された潤滑油は、油受部(6
a)に戻されるのである。又、この油受部(6a)の潤
滑油は、排油ポンプ(7)により吸入油路(68)から
偏心溝(22b)内に吸入し、吐出油路(66)から内
部空間(12)に(非出させることができるので、前記
給油ポンプ(5)により可動部分に潤滑1’lJ]を確
実に供給できるのである。しがも、前記スクロール吸入
室(6b)は、油吸上げ通路(8)を介して前記内部ハ
ウジング(6)内と連通しているから、内部ハウジング
(6)内の負圧に伴い前記吸入室(6b)の底部に溜る
油を、前記油吸上げ通路(8)がら内部ハウジング(6
)内に汲上げることができできるのである。このため、
前記第2スクロール(21)の偏心回転時、該第2スク
ロール(21)の鏡板が油面を叩いて攪拌するのをなく
することができ、油面を叩くことによる駆動軸(3)の
動力損失をなくすることができると共に、前記吸入室(
6b)底部の油が吸入室(6b)のガス冷媒などの流体
に混入して外部に吐出されて油上がりが生ずるのをなく
し得るのである。
The compressor configured as described above uses an external drive source to drive the drive shaft (3
), the oil supply pump (5) and the oil pump (7) are operated by driving the oil supply pump (
5) through the oil supply passage (31) of the drive shaft (3) to the drive unit (4), the thrust bearing (21), and the first bearing (1).
The lubricating oil supplied to the movable parts such as
It is returned to a). The lubricating oil in the oil receiver (6a) is sucked into the eccentric groove (22b) from the suction oil passage (68) by the oil drain pump (7), and is sucked into the eccentric groove (22b) from the discharge oil passage (66) into the internal space (12). Since the oil supply pump (5) can reliably supply 1'lJ of lubrication to the moving parts, the scroll suction chamber (6b) is not connected to the oil suction passage. (8), the oil that accumulates at the bottom of the suction chamber (6b) due to the negative pressure in the internal housing (6) is removed from the oil suction passage ( 8) Internal housing (6)
) can be pumped up. For this reason,
When the second scroll (21) rotates eccentrically, the end plate of the second scroll (21) can prevent the oil surface from hitting and stirring, and the driving shaft (3) is powered by hitting the oil surface. Loss can be eliminated and the suction chamber (
6b) It is possible to prevent the oil at the bottom from mixing with the fluid such as gas refrigerant in the suction chamber (6b) and being discharged to the outside, causing oil to rise.

又、前記油受部(6a)は、密閉状に形成した内部ハウ
ジング(6)の底部に設けているから、この油受部(6
a)から排出する排出油が、吸入管(13)から前記内
部空間(12)に導く吸入流体に混入するのを防止でき
るのである。
Furthermore, since the oil receiver (6a) is provided at the bottom of the internal housing (6) which is formed in a hermetically sealed manner, the oil receiver (6a)
It is possible to prevent the discharged oil discharged from a) from mixing with the suction fluid led from the suction pipe (13) to the internal space (12).

尚1以上説明した実施例では、内部ハウジング(8)を
密閉状に形成すると共に、この内部ハウジング(6)内
を負圧にすることができる排油ポンプ(7)を用いたが
、前記内部ハウジング(6)は必すしも密閉状に形成す
る必要はない。この場合、前記排油ポンプ(7)は、内
部ハウジング(6)内を負圧にすることができない容量
のポンプであってもよい。又、内部ハウジング(6)を
密閉状に形成しない場合、第5図の如く前記吸入油路(
68)に分岐吸込口(7b)を設けて、この分岐吸込口
(7b)に前記油吸上げ通路(8)を接続し、前記排油
ポンプ(7)の駆動により、前記油受部(6a)を経る
ことなくスクロール吸入室(6b)の油を汲上げること
ができるようにするのが好ましい。
In the embodiments described above, the internal housing (8) is formed in a hermetically sealed manner, and a drain oil pump (7) capable of creating negative pressure inside the internal housing (6) is used. The housing (6) does not necessarily have to be formed in a hermetically sealed manner. In this case, the drain oil pump (7) may be a pump with a capacity that cannot create a negative pressure inside the internal housing (6). Furthermore, if the internal housing (6) is not formed in a sealed manner, the suction oil passage (
68) is provided with a branch suction port (7b), the oil suction passage (8) is connected to this branch suction port (7b), and the oil receiving portion (6a) is driven by the oil drain pump (7). ) It is preferable that the oil in the scroll suction chamber (6b) can be pumped up without passing through the scroll suction chamber (6b).

(発明の効果) 以上の如く本発明は、横型ケーシング(1)内の一側方
に第1スクロール(2a)及び第2スクロール(2b)
から成る圧縮要素(2)を内装し、かつ、前記ケーシン
グ(1)に、前記圧縮要素(2)の吐出口に連通ずる吐
出室(11)と区画した内部空間に吸入流体を導く吸入
管(13)を開口させると共に、前記圧縮要素(2)を
駆動する駆動軸(3)を前記ケーシング(1)の他側方
開放口から外方に突出して外部駆動源により駆動させる
と共に、可動部分に潤滑油を供給する給油ポンプ(5)
を設けた横型開放圧縮機であって、前記ケーシング(1
)内に、前記駆動軸(3)を含み、前記潤滑油を供給す
る可動部分を包囲して、前記ケーシング(1)の内部空
間と区画する密閉状の内部ハウジング(6)を設けて、
このハウジング(6)の底部に、前記可動部分へ供給す
る潤滑油の前記可動部分からの戻り油を収容する油受部
(6a)を設けると共に、前記油受部(6a)内の油を
前記ケーシング(1)の内部空間に排出する排油ポンプ
(7)を設け、かつ、スクロール吸入室(6b)の底部
と前記排油ポンプ(7)の吸入側とを連通ずる油吸上げ
通路(8)を設けたから、給油ポンプ(5)により可動
部分に供給する潤滑油は、内部ハウジング(6)の底部
に設ける油受部(6a)に収容し、この油受部(6a)
内の油を、υト油ポンプ(7)によりケーシング(1)
の内部空間に排出するから、前記給油ポンプ(5)によ
り可動部分に潤滑油を確実に供給できながら、前記可動
部分からの戻り油をケーシング(1)の内部空間に排出
する排油ポンプ(7)を利用してスクロール吸入室(6
b)の底部に溜る油を前記ケーシング(1)の内部空間
に排出することができるので、偏心回転する可動側スク
ロールが吸入室(6b)の油面を叩いて攪拌するのを防
止でき、従って、油面を叩くことによる動力の損失をな
くすることができると共に、攪拌した潤滑油による油上
がりを少なくできるのである。  又、内部ハウジング
(6)を密閉状とし、かつ、排油ポンプ(7)を、前記
内部ハウジング(6)に流入する流体の流入量より排出
量が多く前記内部ハウジング(6)内を負圧にすること
ができる容量とし、かつ、油吸上げ通路(8)を、前記
内部ハウジング(6)に開口させて前記排油ポンプ(7
)の吸込口(7a)と連通させることにより、前記内部
ハウジング(6)内の圧力を圧縮要素(2)内の圧力よ
り、低圧にできるので、前記負圧を利用して前記吸入室
(6b)底部の油を油受部(6a)内に汲上げることが
でき、従って、前記油吸上げ通路(8)を、内部ハウジ
ング(6)内に開口させるだけの簡単な構造にできるの
である。
(Effects of the Invention) As described above, the present invention provides a first scroll (2a) and a second scroll (2b) on one side of the horizontal casing (1).
The casing (1) is equipped with a suction pipe (1) that carries a suction fluid into an internal space defined by a discharge chamber (11) that communicates with a discharge port of the compression element (2). 13) is opened, and the drive shaft (3) that drives the compression element (2) is projected outward from the other side opening of the casing (1) and driven by an external drive source, and the movable part is Oil supply pump (5) that supplies lubricating oil
A horizontal open compressor provided with the casing (1
) is provided with a sealed internal housing (6) that includes the drive shaft (3), surrounds the movable part that supplies the lubricating oil, and is partitioned from the internal space of the casing (1);
An oil receiver (6a) is provided at the bottom of the housing (6) to accommodate return oil from the movable part of the lubricating oil supplied to the movable part, and the oil in the oil receiver (6a) is An oil suction passage (8) is provided with an oil drain pump (7) for discharging oil into the internal space of the casing (1), and communicates the bottom of the scroll suction chamber (6b) with the suction side of the oil drain pump (7). ), the lubricating oil supplied to the movable parts by the oil supply pump (5) is stored in the oil receiver (6a) provided at the bottom of the internal housing (6), and
The oil inside the casing (1) is pumped by the oil pump (7).
Since the oil supply pump (5) can reliably supply lubricating oil to the movable parts, the oil drain pump (7) discharges the return oil from the movable parts into the inner space of the casing (1). ) using the scroll suction chamber (6
Since the oil accumulated at the bottom of the suction chamber (6b) can be discharged into the internal space of the casing (1), it is possible to prevent the eccentrically rotating movable scroll from hitting and agitating the oil surface in the suction chamber (6b). This eliminates the loss of power caused by hitting the oil surface, and also reduces oil spillage caused by the agitated lubricating oil. Further, the internal housing (6) is sealed, and the oil drain pump (7) is operated so that the internal housing (6) has a negative pressure when the amount of fluid discharged is larger than the amount of fluid flowing into the internal housing (6). The oil suction passageway (8) is opened in the internal housing (6) and the oil drain pump (7
), the pressure inside the internal housing (6) can be made lower than the pressure inside the compression element (2), so the negative pressure is used to connect the suction chamber (6b) to the suction port (7a). ) The oil at the bottom can be pumped up into the oil receiving part (6a), and therefore the oil suction passage (8) can be constructed simply by opening into the internal housing (6).

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

第1図は本発明圧縮機の縦断正面図、第2図は給油ポン
プ部分の縦断側面図、第3図は排油ポンプ部分の縦断側
面図、第4図は前記各ポンプ部分のみの断面図、第5図
は別の実施例を示す一部省略断面図、第6図は従来例を
示す断面図である。 (1)・・・・ケーシング (11)・・・・吐出室 (13)・・・・吸入管 (2)・・・・圧縮要素 (2a)・・・・第1スクロール (2b)・・・・第2スクロール (3)・・・駆動軸 (5)・・・・給油ポンプ (6)・・・・内部ハウジング (6a)・・・・油受部 (6b)・・・・スクロール吸入室 (7)・・・・排油ポンプ (7a)・・・・吸込口 (8)・・・・油吸上げ通路 第4図 第3図 べ
Fig. 1 is a longitudinal sectional front view of the compressor of the present invention, Fig. 2 is a longitudinal sectional side view of the oil supply pump section, Fig. 3 is a longitudinal sectional side view of the oil drain pump section, and Fig. 4 is a sectional view of only the pump sections. , FIG. 5 is a partially omitted sectional view showing another embodiment, and FIG. 6 is a sectional view showing a conventional example. (1)...Casing (11)...Discharge chamber (13)...Suction pipe (2)...Compression element (2a)...First scroll (2b)... ...Second scroll (3)...Drive shaft (5)...Oil pump (6)...Inner housing (6a)...Oil receiver (6b)...Scroll suction Chamber (7)...Drain pump (7a)...Suction port (8)...Oil suction passage Figure 4 Figure 3

Claims (1)

【特許請求の範囲】 1)横型ケーシング(1)内の一側方に第1スクロール
(2a)及び第2スクロール(2b)から成る圧縮要素
(2)を内装し、かつ、前記ケーシング(1)に、前記
圧縮要素(2)の吐出口に連通する吐出室(11)と区
画した内部空間に吸入流体を導く吸入管(13)を開口
させると共に、前記圧縮要素(2)を駆動する駆動軸(
3)を前記ケーシング(1)の他側方開放口から外方に
突出して外部駆動源により駆動させると共に、可動部分
に潤滑油を供給する給油ポンプ(5)を設けた横型開放
圧縮機であって、前記ケーシング(1)内に、前記駆動
軸(3)を含み、前記潤滑油を供給する可動部分を包囲
して、前記ケーシング(1)の内部空間と区画する内部
ハウジング(6)を設けて、このハウジング(6)の底
部に、前記可動部分へ供給する潤滑油の前記可動部分か
らの戻り油を収容する油受部(6a)を設けると共に、
前記油受部(6a)内の油を前記ケーシング(1)の内
部空間に排出する排油ポンプ(7)を設け、かつ、スク
ロール吸入室(6b)の底部と前記排油ポンプ(7)の
吸入側とを連通する油吸上げ通路(8)を設けたことを
特徴とする横型開放圧縮機。 2)内部ハウジング(6)を密閉状とし、かつ、排油ポ
ンプ(7)を、前記内部ハウジング(6)に流入する流
体の流入量より排出量が多く前記内部ハウジング(6)
内を負圧にすることができる容量とし、かつ、油吸上げ
通路(8)を、前記内部ハウジング(6)に開口させて
前記排油ポンプ(7)の吸込口(7a)と連通させた請
求項1記載の横型開放圧縮機。
[Claims] 1) A compression element (2) consisting of a first scroll (2a) and a second scroll (2b) is installed on one side of a horizontal casing (1), and the casing (1) A drive shaft for driving the compression element (2) opens a suction pipe (13) that guides suction fluid into an internal space defined by a discharge chamber (11) that communicates with the discharge port of the compression element (2). (
3) is provided with an oil supply pump (5) which protrudes outward from the other side opening of the casing (1) and is driven by an external drive source, and which supplies lubricating oil to the movable parts. An internal housing (6) is provided in the casing (1), including the drive shaft (3), surrounding the movable part that supplies the lubricating oil, and separating it from the internal space of the casing (1). An oil receiver (6a) is provided at the bottom of the housing (6) for accommodating return oil from the movable part of the lubricating oil supplied to the movable part,
An oil drain pump (7) is provided for discharging the oil in the oil receiver (6a) into the internal space of the casing (1), and the bottom of the scroll suction chamber (6b) and the oil drain pump (7) are connected to each other. A horizontal open compressor characterized by being provided with an oil suction passageway (8) that communicates with the suction side. 2) The internal housing (6) is sealed, and the drain pump (7) is configured such that the amount of fluid discharged from the internal housing (6) is larger than the amount of fluid flowing into the internal housing (6).
The oil suction passage (8) is opened in the internal housing (6) and communicated with the suction port (7a) of the oil drain pump (7). The horizontal open compressor according to claim 1.
JP12797390A 1990-05-17 1990-05-17 Horizontal open compressor Expired - Fee Related JPH07101038B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12797390A JPH07101038B2 (en) 1990-05-17 1990-05-17 Horizontal open compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12797390A JPH07101038B2 (en) 1990-05-17 1990-05-17 Horizontal open compressor

Publications (2)

Publication Number Publication Date
JPH0422793A true JPH0422793A (en) 1992-01-27
JPH07101038B2 JPH07101038B2 (en) 1995-11-01

Family

ID=14973277

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12797390A Expired - Fee Related JPH07101038B2 (en) 1990-05-17 1990-05-17 Horizontal open compressor

Country Status (1)

Country Link
JP (1) JPH07101038B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007192183A (en) * 2006-01-20 2007-08-02 Sanden Corp Electric compressor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007192183A (en) * 2006-01-20 2007-08-02 Sanden Corp Electric compressor

Also Published As

Publication number Publication date
JPH07101038B2 (en) 1995-11-01

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