JPH029115Y2 - - Google Patents
Info
- Publication number
- JPH029115Y2 JPH029115Y2 JP8506585U JP8506585U JPH029115Y2 JP H029115 Y2 JPH029115 Y2 JP H029115Y2 JP 8506585 U JP8506585 U JP 8506585U JP 8506585 U JP8506585 U JP 8506585U JP H029115 Y2 JPH029115 Y2 JP H029115Y2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- compressor
- compressors
- check valve
- positive displacement
- 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.)
- Expired
Links
- 239000003921 oil Substances 0.000 claims description 38
- 239000010687 lubricating oil Substances 0.000 claims description 9
- 238000011084 recovery Methods 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、冷凍機、ヒートポンプ等に用いられ
る油冷式容積形圧縮機、特にその給油系統に関す
る。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an oil-cooled positive displacement compressor used in refrigerators, heat pumps, etc., and particularly to an oil supply system thereof.
（従来の技術）
従来、このような油冷式容積形圧縮機において
は、一つの給油系統を複数の圧縮機で共有するこ
とが行なわれている。これは、少種類の圧縮機を
適宜組み合わせて容量の異なる多種類の圧縮機ユ
ニツトを構成し、例えばヒートポンプ等の機種の
シリーズ化を可能とするものである。さらに、圧
縮機を少種類とすることにより、標準化が図ら
れ、量産効果が期待できるうえ、部品が共有化さ
れてメンテナンスが容易となる等の利点を有して
いる。(Prior Art) Conventionally, in such oil-cooled positive displacement compressors, one oil supply system is shared by a plurality of compressors. This allows a small number of types of compressors to be appropriately combined to form many types of compressor units with different capacities, making it possible to create a series of models such as heat pumps, for example. Furthermore, by reducing the number of types of compressors, standardization can be achieved and mass production effects can be expected, and parts can be shared, making maintenance easier.
第２図は、このようにユニツト化された油冷式
スクリユ圧縮機（以下、単に圧縮機ユニツトとい
う）を示し、一つの給油系統を２基の圧縮機で共
有したものである。すなわち、この圧縮機ユニツ
トは、圧縮機１及び２と、その吐出側に油回収器
３と、その潤滑油溜まりから前記圧縮機１及び２
に至る給油系統を構成する油冷却器４及び油濾過
器５とからなる。そして、各圧縮機１及び２に吸
込逆止弁６を介して吸い込まれたガスは、それぞ
れ圧縮されて吐出ラインa1，a2を通つて油回収器
３に吐出し、ここで潤滑油と分離されたガスは吐
出逆止弁７を介して次行程に移送される。一方、
分離回収された潤滑油は、圧縮機１，２の吐出側
と吸込側の圧力差により、油冷却器４及び油濾過
器５を介して給油ヘツダーｂに至り、ここで分岐
する供給ラインc1，c2を通つて各圧縮機１及び２
の所要箇所に給油されるようになつている。な
お、８，９は圧縮機１，２をそれぞれ駆動するモ
ータである。 FIG. 2 shows a unitized oil-cooled screw compressor (hereinafter simply referred to as a compressor unit), in which two compressors share one oil supply system. That is, this compressor unit includes compressors 1 and 2, an oil recovery device 3 on the discharge side thereof, and a lubricating oil reservoir for the compressors 1 and 2.
It consists of an oil cooler 4 and an oil filter 5, which constitute an oil supply system leading to the oil supply system. The gas sucked into each compressor 1 and 2 via the suction check valve 6 is compressed and discharged through the discharge lines a 1 and a 2 to the oil recovery device 3, where it is mixed with lubricating oil. The separated gas is transferred to the next step via the discharge check valve 7. on the other hand,
Due to the pressure difference between the discharge side and the suction side of the compressors 1 and 2, the separated and recovered lubricating oil reaches the oil supply header b via the oil cooler 4 and the oil filter 5, where it branches into the supply line c 1 , c 2 to each compressor 1 and 2
Fuel is supplied to the required locations. Note that 8 and 9 are motors that drive the compressors 1 and 2, respectively.
（考案が解決しようとする問題点）
このような圧縮機ユニツトは、省エネルギー対
索上、往々にして複数の圧縮機の台数制御（例え
ば、第２図に示す圧縮機ユニツトにおいて、２基
の圧縮機のうち１基を運転し、他の１基は停止す
ること）により部分負荷運転を行うことがある。
この場合、例えば第２図において、圧縮機１のみ
を運転すると、圧縮機１の吐出側は吐出ラインa2
を介して圧縮機２と連通し、圧縮機２には圧縮機
１の吐出圧力が作用することになる。このとき、
圧縮機２の吸込逆止弁６の存在により吐出ガスの
逆流は生じないものの、圧縮機２は供給ラインc2
を介して給油ヘツダーｂに連通している。一方、
油回収器３から給油ヘツダーｂまで帰還した潤滑
油は、油冷却器４及び油濾過器５を通過して圧力
損失を生じている。このため、圧縮機１からの吐
出ガスの一部は、吐出ラインa2、圧縮機２及び供
給ラインc2を通つて給油ヘツダーｂに流入し、供
給ラインc1を通つて圧縮機１に注入されることに
なる。従つて、圧縮機１の給油箇所には、圧縮機
１の吐出ガスが逆流することとなり、潤滑油不足
となつて軸受ベアリングの摩耗等の運転上の支障
が生じるという問題点を有している。(Problems to be solved by the invention) In order to save energy, such a compressor unit is often used to control the number of compressors (for example, in the compressor unit shown in Fig. 2, two compressors Partial load operation may be performed by operating one of the machines and stopping the other.
In this case, for example in FIG. 2, if only the compressor 1 is operated, the discharge side of the compressor 1 is connected to the discharge line a 2
It communicates with the compressor 2 via the compressor 2, and the discharge pressure of the compressor 1 acts on the compressor 2. At this time,
Although backflow of discharge gas does not occur due to the presence of the suction check valve 6 of the compressor 2, the compressor 2 is connected to the supply line c 2
It communicates with the oil supply header b via. on the other hand,
The lubricating oil returned from the oil recovery device 3 to the oil supply header b passes through an oil cooler 4 and an oil filter 5, causing a pressure loss. Therefore, a part of the discharge gas from the compressor 1 flows into the refueling header b through the discharge line a 2 , the compressor 2 and the supply line c 2 , and is injected into the compressor 1 through the supply line c 1 . will be done. Therefore, the gas discharged from the compressor 1 flows backward into the lubrication point of the compressor 1, resulting in a lack of lubricating oil, which causes operational problems such as wear of the bearings. .
本考案は、斯る問題点に鑑みてなされたもの
で、いずれか１基の圧縮機が停止しても吐出ガス
が運転中の圧縮機に逆流することがない一つの給
油系統を複数の圧縮機で共有する油冷式容積形圧
縮機を提供すること目的とする。 The present invention was developed in view of such problems, and it is possible to use a single oil supply system for multiple compressors so that even if one of the compressors stops, the discharged gas will not flow back to the operating compressor. The purpose is to provide an oil-cooled positive displacement compressor that can be shared by multiple machines.
（問題点を解決するための手段）
前記問題点を解決するため、本考案は、圧縮機
本体の吐出側に設けた油回収器にて吐出ガスより
分離回収した潤滑油を油冷却器及び油濾過器を介
して圧縮機本体の所要箇所に供給する給油系統を
複数の圧縮機で共有する油冷式容積形圧縮機にお
いて、前記油濾過器から各圧縮機本体への供給ラ
インに逆止弁を設けたものである。(Means for Solving the Problems) In order to solve the above problems, the present invention provides lubricating oil that is separated and recovered from the discharged gas in an oil recovery device installed on the discharge side of the compressor body, and is used in an oil cooler and an oil collector. In an oil-cooled positive displacement compressor in which multiple compressors share an oil supply system that supplies oil to required parts of the compressor body via a filter, a check valve is installed in the supply line from the oil filter to each compressor body. It has been established.
（実施例）
次に、本考案の一実施例を図面に従つて説明す
る。(Example) Next, an example of the present invention will be described with reference to the drawings.
第１図は、本考案に係る油冷式スクリユ圧縮機
の系統図を示し、一つの給油系統を２基の圧縮機
で共有するもので、第２図に示す従来例とは、給
油ヘツダーからの各圧縮機に至る供給ラインに逆
止弁１０を設けた以外は実質的に同一であり、対
応する部分には同一番号を付して説明を省略す
る。 Figure 1 shows a system diagram of an oil-cooled screw compressor according to the present invention, in which one oil supply system is shared by two compressors. They are substantially the same except that a check valve 10 is provided in the supply line leading to each compressor, and corresponding parts are given the same numbers and explanations will be omitted.
前記逆止弁１０は、給油ヘツダーｂより分岐し
て各圧縮機１及び２に至る供給ラインc1，c2に設
けられ、油回収器３より油冷却器４及び油濾過器
５を介して帰還する潤滑油が給油ヘツダーｂから
各圧縮機１２の方向にのみ通過するようになつて
いる。 The check valve 10 is installed in the supply lines c 1 and c 2 that branch from the oil supply header b and reach the respective compressors 1 and 2, and is connected to the supply lines c 1 and c 2 that extend from the oil recovery device 3 through the oil cooler 4 and the oil filter 5. The returning lubricating oil is configured to pass only in the direction of each compressor 12 from the oil supply header b.
従つて、例えば圧縮機２を停止して圧縮機１を
運転する場合には、圧縮機２には圧縮機の吐出圧
力が作用するが、逆止弁１０により給油ヘツダー
ｂ及び供給ラインc1を通つて圧縮機１へ逆流する
ことはない。 Therefore, for example, when the compressor 2 is stopped and the compressor 1 is operated, the discharge pressure of the compressor acts on the compressor 2, but the check valve 10 closes the oil supply header b and the supply line c1. It does not flow back to the compressor 1.
なお、前記逆止弁１０を電磁弁で代用すること
も考えられるが、電磁弁は下流側が圧力が高いと
きには少量ずつ漏出することがあるため好ましく
ない。 Although it is possible to replace the check valve 10 with a solenoid valve, it is not preferable to use a solenoid valve because it may leak little by little when the pressure on the downstream side is high.
（考案の効果）
以上の説明から明らかなように、本考案によれ
ば、いずれか１基の圧縮機が停止しても吐出ガス
が運転中の圧縮機に逆流することがない。このた
め、供給系統は正常に作動し、運転上の支障は生
じないので、省エネルギ事情に応じて任意の圧縮
機を停止し、部分負荷運転を行うことが可能とな
る等の効果を有している。(Effects of the Invention) As is clear from the above description, according to the present invention, even if any one of the compressors stops, the discharged gas will not flow back to the compressor that is in operation. As a result, the supply system operates normally and there are no operational problems, so it is possible to stop any compressor and perform partial load operation depending on the energy saving situation. ing.
第１図は、本考案の一実施例である油冷式スク
リユ圧縮機の系統図、第２図は、従来の油冷式ス
クリユ圧縮機の系統図である。
１，２……圧縮機、３……油回収器、４……油
冷却器、５……油濾過器、１０……逆止弁、c1，
c2……供給ライン。
FIG. 1 is a system diagram of an oil-cooled screw compressor that is an embodiment of the present invention, and FIG. 2 is a system diagram of a conventional oil-cooled screw compressor. 1, 2... Compressor, 3... Oil recovery device, 4... Oil cooler, 5... Oil filter, 10... Check valve, c 1 ,
c 2 ... supply line.
Claims (1)
ガスより分離回収した潤滑油を油冷却器及び油濾
過器を介して圧縮機本体の所要箇所に供給する給
油系統を複数の圧縮機で共有する油冷式容積形圧
縮機において、前記油濾過器から各圧縮機本体へ
の供給ラインに逆止弁を設けたことを特徴とする
油冷式容積形圧縮機。 A lubricating oil system that supplies lubricating oil, which is separated and recovered from the discharged gas by an oil recovery device installed on the discharge side of the compressor body, to the required parts of the compressor body via an oil cooler and an oil filter, is constructed using multiple compressors. An oil-cooled positive displacement compressor that is shared by the oil-cooled positive displacement compressor, characterized in that a check valve is provided in the supply line from the oil filter to each compressor main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8506585U JPH029115Y2 (en) | 1985-06-04 | 1985-06-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8506585U JPH029115Y2 (en) | 1985-06-04 | 1985-06-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61200486U JPS61200486U (en) | 1986-12-15 |
| JPH029115Y2 true JPH029115Y2 (en) | 1990-03-06 |
Family
ID=30635118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8506585U Expired JPH029115Y2 (en) | 1985-06-04 | 1985-06-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH029115Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07103854B2 (en) * | 1988-03-25 | 1995-11-08 | 株式会社神戸製鋼所 | Screw type vacuum pump |
| JP2779035B2 (en) * | 1990-02-14 | 1998-07-23 | 株式会社日立製作所 | Oiling device for oiled screw compressor |
| US7677051B2 (en) | 2004-05-18 | 2010-03-16 | Carrier Corporation | Compressor lubrication |
| JP5132232B2 (en) * | 2007-09-25 | 2013-01-30 | 三菱電機株式会社 | Oil level detection method for oil sump, oil supply control method, gas compression device provided with these, and air conditioner provided with this gas compression device |
-
1985
- 1985-06-04 JP JP8506585U patent/JPH029115Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61200486U (en) | 1986-12-15 |
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