JPS60222585A - Screw compressor - Google Patents
Screw compressorInfo
- Publication number
- JPS60222585A JPS60222585A JP6350885A JP6350885A JPS60222585A JP S60222585 A JPS60222585 A JP S60222585A JP 6350885 A JP6350885 A JP 6350885A JP 6350885 A JP6350885 A JP 6350885A JP S60222585 A JPS60222585 A JP S60222585A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- gas
- compressor
- separator
- amount
- 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
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野)
本発明はスクリュー圧縮機の改良に係り、特に空調用と
して使用する場合の油サイクルの簡略化に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an improvement in a screw compressor, and particularly to the simplification of an oil cycle when used for air conditioning.
従来のスクリュー圧縮機は圧縮ガスの冷却、およびシー
ル、ロータ歯面の潤滑のため多量の冷却した油をロータ
鑑溝に供給している。そのため吐出ガス中の油を分離す
るためのセパレータが大形化し、油の冷却をするための
油冷却器も大容量のものを必要とする。Conventional screw compressors supply a large amount of cooled oil to the rotor guide grooves for cooling the compressed gas and for lubricating seals and rotor tooth surfaces. Therefore, the separator for separating the oil in the discharged gas becomes large in size, and the oil cooler for cooling the oil also needs to have a large capacity.
さらにまた、ロータ歯溝に油を多量に供給するため、容
tIiM!整弁およびケーシングへの油供給穴を複雑に
加工する必要がある。Furthermore, since a large amount of oil is supplied to the rotor tooth groove, the capacity is tIiM! The oil supply hole to the valve regulator and casing must be machined in a complicated manner.
本発明はセパレータの小形化をはかシ、油冷却器をなく
しかつケーシング等の油供給穴の加工をなくすことによ
υシンプルな油系統とし、ユニット全体としての小形化
をはかる事金目的とする。The purpose of the present invention is to reduce the size of the separator, eliminate the oil cooler, and eliminate the machining of oil supply holes in the casing, etc. to create a simple oil system, and to reduce the size of the entire unit. do.
上記目的を達成するため本発明は、圧縮機への油供給を
必要最小限にして効率を低下させる事なく、セパレータ
等の補益を小形化するとともに油系統をシンプルにして
ユニット全体を小形化せんとするものである。In order to achieve the above object, the present invention minimizes the oil supply to the compressor without reducing efficiency, downsizes the supplementary parts such as separators, and simplifies the oil system to downsize the entire unit. That is.
以下本発明の実施例を図面に基づき説明する。 Embodiments of the present invention will be described below based on the drawings.
illスクリュー圧縮機、2は油セパレータ、3は吸入
管、4は吐出管、5はコンデンサへの接続管、6は油供
給管である。ill screw compressor, 2 is an oil separator, 3 is a suction pipe, 4 is a discharge pipe, 5 is a connection pipe to a condenser, and 6 is an oil supply pipe.
吸入ガスは吸入管1からスクリュー圧縮機2へ流入しこ
こで昇圧される。この昇圧行程では油セパレータ2でセ
パレートされた油が軸受を潤滑した後ロータの吸入側歯
溝空間へ吸い込まれ、ガスのシール作用をせしめる。昇
圧されたガスは吐出管4を経て油セパレータ2へ流入す
る。ここで油とガスは分離し、ガスは接続管5を経てコ
ンデンサへ吐出され、油は油供給管6を通って圧縮機へ
供給される。Suction gas flows into the screw compressor 2 from the suction pipe 1 and is pressurized there. In this pressure increasing stroke, the oil separated by the oil separator 2 lubricates the bearing and is then sucked into the tooth space on the suction side of the rotor to provide a gas sealing effect. The pressurized gas flows into the oil separator 2 via the discharge pipe 4. Here, the oil and gas are separated, the gas being discharged through the connecting pipe 5 to the condenser, and the oil being supplied through the oil supply pipe 6 to the compressor.
圧縮機へ供給される油の粘度は100’Cにおいて2乃
至I Q 、Q cstの粘度を有するのが効率を維持
する上で必要な条件であ1,2cst以下の粘度の油を
使用すると油膜の破断力が低下するためシール効果が蓄
しく減少し効率?維持するのがむつかしい。The viscosity of the oil supplied to the compressor is 2 to I Q , Q cst at 100'C, which is a necessary condition to maintain efficiency. If oil with a viscosity of 1.2 cst or less is used, an oil slick will occur. Since the breaking force of the seal decreases, the sealing effect decreases and the efficiency decreases. Difficult to maintain.
反s t o o cst以上の油では圧縮機の内部で
の油の流動性が悪化するとともに油膜破断力が大きくな
りすぎ圧縮機駆動系統の損失が大きくなりすぎかえって
効率が低下する。If the oil exceeds s to o cst, the fluidity of the oil inside the compressor deteriorates, and the oil film rupture force becomes too large, resulting in too large a loss in the compressor drive system, and on the contrary, the efficiency decreases.
圧縮ガスのシールには、実験結果によると、吸入ガス量
の0.1%〜196の体積流量化の油が、必要不可欠で
ある事が解明された。この量は運転条件にはあまシ左右
される事はない。一方、圧縮機の駆動系の潤滑には通常
軸受の場合圧縮機のキャパシティーによっても異なるが
、吸入ガス量の体積化で0.02〜3%の油が必要であ
ることが解明された。すなわち、軸受必要量と圧縮ガス
のシールに必要な量ははy同等である。According to experimental results, it has been found that oil with a volumetric flow rate of 0.1% to 196% of the amount of suction gas is essential for sealing compressed gas. This amount is not affected by operating conditions. On the other hand, it has been found that in the case of normal bearings, 0.02 to 3% oil is required based on the volume of suction gas to lubricate the drive system of the compressor, although this varies depending on the capacity of the compressor. That is, the amount required for the bearing and the amount required for sealing the compressed gas are equal to y.
さらにまた重要なことは冷凍機の場合、吐出ガスの温度
が高ければ高い程効率が高くなる事である。すなわち同
一圧力条件下においては温度が高い種油の溶解度が小さ
く、そのため低圧側での沸とうに伴なう冷媒の再蒸発量
が少なくなるためである。What is also important is that in the case of a refrigerator, the higher the temperature of the discharged gas, the higher the efficiency. That is, under the same pressure conditions, the solubility of the seed oil with a high temperature is low, and therefore the amount of re-evaporation of the refrigerant accompanying boiling on the low pressure side is reduced.
従来のスクリュー冷凍機は吐出温度を低くし、かつ多量
の油を供給する事により効率を維持する事が正論であっ
たが、吐出温度’k100’c前後に高め、かつ油量t
gT事によりさらに性能向上がはかれ、これによシ油セ
パレータの小形化、油冷却器の省略がはかれる事が明白
である。In conventional screw refrigerators, it was natural to maintain efficiency by lowering the discharge temperature and supplying a large amount of oil.
It is clear that the performance is further improved by gT, which allows the oil separator to be made smaller and the oil cooler to be omitted.
本発明によれば、圧縮機への供給油量は軸受への給油量
のみでまかなえるのでサイクルへ附設する油セパレータ
は小形のもので十分効果が期待できる。According to the present invention, the amount of oil supplied to the compressor can be covered only by the amount of oil supplied to the bearings, so even a small oil separator attached to the cycle can be expected to be sufficiently effective.
また油量の減少によシ封入油量も少なくてすむし、圧縮
機として余分な油を送給する必要もなく消費動力も減少
する。Furthermore, since the amount of oil is reduced, the amount of oil sealed in the compressor is also reduced, and there is no need to supply excess oil to the compressor, which reduces power consumption.
図は本発明の一実施例を示すサイクル系統図である。
1・・・スクリュー圧縮機 2・・・油セパレータ6・
・・油供給管The figure is a cycle system diagram showing one embodiment of the present invention. 1... Screw compressor 2... Oil separator 6.
・・Oil supply pipe
Claims (1)
リュー圧縮機において、この冷凍機油の積置が100°
Cにおいて2乃至I Q Q cstであり、かつ吐出
ガスから分離した油は強制冷却される事なく圧縮機へ供
給され、この供給された油はすべて軸受を経由した後吸
入ガスとともにロータ歯溝間へ吸入される事を特徴とす
るスクリュー圧縮機。In a screw compressor that uses refrigeration oil for lubrication and sealing, the accumulation of refrigeration oil is 100°.
2 to I Q Q cst at C, and the oil separated from the discharge gas is supplied to the compressor without being forcedly cooled, and all of this supplied oil passes through the bearing and then flows between the teeth of the rotor together with the suction gas. A screw compressor characterized by suction into the air.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6350885A JPS60222585A (en) | 1985-03-29 | 1985-03-29 | Screw compressor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6350885A JPS60222585A (en) | 1985-03-29 | 1985-03-29 | Screw compressor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS60222585A true JPS60222585A (en) | 1985-11-07 |
Family
ID=13231236
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6350885A Pending JPS60222585A (en) | 1985-03-29 | 1985-03-29 | Screw compressor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60222585A (en) |
-
1985
- 1985-03-29 JP JP6350885A patent/JPS60222585A/en active Pending
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