JP2000291561A - Air compressor - Google Patents
Air compressorInfo
- Publication number
- JP2000291561A JP2000291561A JP11094127A JP9412799A JP2000291561A JP 2000291561 A JP2000291561 A JP 2000291561A JP 11094127 A JP11094127 A JP 11094127A JP 9412799 A JP9412799 A JP 9412799A JP 2000291561 A JP2000291561 A JP 2000291561A
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- Prior art keywords
- temperature
- air
- lubricating oil
- air compressor
- compressed air
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、鉄道車両等に装備
される空気圧縮装置の潤滑油温度制御に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to lubricating oil temperature control for an air compressor installed in a railway vehicle or the like.
【０００２】[0002]
【従来の技術】一般に鉄道車両ではブレーキ装置やドア
開閉装置を駆動するために圧縮空気を用いており、この
ため、これらの装置に圧縮空気を供給する空気圧縮機を
装備している。また、空気圧縮機の型式には、車両の低
振動化、低騒音化への要求から、ロータリー式、スクリ
ュー式あるいは渦巻式空気圧縮機（以下総称して、回転
式空気圧縮機という）が用いられるようになってきた。2. Description of the Related Art Generally, railway vehicles use compressed air to drive a brake device and a door opening / closing device. Therefore, these devices are equipped with an air compressor that supplies compressed air to these devices. In addition, a rotary type, a screw type or a spiral type air compressor (hereinafter, collectively referred to as a rotary type air compressor) is used as a type of the air compressor due to a demand for low vibration and low noise of a vehicle. It has come to be.
【０００３】回転式空気圧縮機においては、潤滑油が軸
受等の潤滑のほかに、ローターとハウジングの隙間な
ど、圧縮機における各部の微小隙間をシールし、また、
圧縮過程で高温になっている空気に潤滑油を直接噴射し
て冷却する役目を有している。即ち、回転式空気圧縮機
における潤滑油の役目は本来の潤滑剤の他にシール剤、
冷却剤としての役目を持ち、運転中の潤滑油温度の管理
が最も重要となる。[0003] In a rotary air compressor, in addition to lubrication of bearings and the like, lubricating oil seals minute gaps in various parts of the compressor such as a gap between a rotor and a housing.
It has the role of cooling by directly injecting lubricating oil into the air that has become hot during the compression process. That is, the role of the lubricating oil in the rotary air compressor is, in addition to the original lubricant, a sealant,
Having a role as a coolant, the control of lubricating oil temperature during operation is of utmost importance.
【０００４】図５は鉄道車両に装備される一般的な回転
式空気圧縮機のシステム構成を示している。図におい
て、元空気溜３５は圧縮空気を貯留して、車両のブレー
キ装置やドア開閉装置へ供給するものであり、調圧器３
６は元空気溜３５内の空気圧力を測定し、設定された上
限設定圧力および下限設定圧力になると、その信号をモ
ータ３１の電源回路に発するものである。即ち、元空気
溜３５に溜めた圧縮空気を車両のブレーキ装置やドア開
閉装置へ供給して、元空気溜３５内の圧力が調圧器３６
の下限設定圧力（通常6〜8kgf/cm2）まで降下すると、
調圧器３６の作用により、モータ３１の電源回路が“０
Ｎ”になり、空気圧縮機３０が運転される。FIG. 5 shows a system configuration of a general rotary air compressor mounted on a railway vehicle. In the figure, a source air reservoir 35 stores compressed air and supplies the compressed air to a brake device and a door opening / closing device of the vehicle.
Numeral 6 measures the air pressure in the original air reservoir 35, and when the air pressure reaches the set upper limit set pressure and lower limit set pressure, sends a signal to the power supply circuit of the motor 31. That is, the compressed air stored in the original air reservoir 35 is supplied to a brake device and a door opening / closing device of the vehicle, and the pressure in the original air reservoir 35 is adjusted by the pressure regulator 36.
When the pressure drops to the lower limit set pressure (usually 6 to 8 kgf / cm 2 ),
By the operation of the pressure regulator 36, the power supply circuit of the motor 31 is set to “0”.
N ", and the air compressor 30 is operated.
【０００５】空気圧縮機３０の運転により、空気フィル
タ３７を介して取り入れられた大気は圧縮され、高温に
なった圧縮空気が分油器３２で潤滑油を分離し、圧縮空
気のみがアフタークーラ３３に入り、ここで、約４０℃
程度まで冷却される。そして、除湿装置３４で除湿さ
れ、乾燥空気となって、元空気溜３５に貯留される。[0005] By the operation of the air compressor 30, the air taken in through the air filter 37 is compressed, the high-temperature compressed air separates the lubricating oil in the oil divider 32, and only the compressed air is supplied to the aftercooler 33. And here, about 40 ° C
Cool to a degree. Then, the air is dehumidified by the dehumidifier 34 and becomes dry air, which is stored in the original air reservoir 35.
【０００６】元空気溜３５内の圧力が上限設定圧力（通
常7〜9 kgf/cm2）に達すると、調圧器３６が再び作用し
て、モータ３１の電源回路が“ＯＦＦ”となり、空気圧
縮機３０の運転が停止される。When the pressure in the original air reservoir 35 reaches the upper limit set pressure (usually 7 to 9 kgf / cm 2 ), the pressure regulator 36 operates again, and the power supply circuit of the motor 31 is turned “OFF”, and the air compression is performed. The operation of the machine 30 is stopped.
【０００７】一方、空気圧縮機３０が運転中における潤
滑油は、分油器３２の下部に設けられた油溜４１からオ
イルクーラ３９を経て空気圧縮機３０内に供給され、こ
こで、軸受等の潤滑、各部隙間のシールおよび圧縮過程
の空気の冷却を行い、圧縮空気とともに、分油器３２内
に回収されるべく循環している。On the other hand, the lubricating oil during the operation of the air compressor 30 is supplied from the oil reservoir 41 provided at the lower part of the oil divider 32 to the air compressor 30 via the oil cooler 39, where bearings and the like are provided. Lubrication, sealing of the gaps between the parts, and cooling of the air during the compression process, and circulates together with the compressed air to be collected in the oil divider 32.
【０００８】油溜４１内の潤滑油温度を検出するため、
潤滑油温度検出器３８が設けられ、その潤滑油温度が設
定値（通常80〜90℃）を越えるとオイルクーラ３９を冷
却するため、冷却ファン４０を駆動し、オイルクーラ３
９内を通過する潤滑油を冷却する。油溜４１の油温が設
定値以下になると潤滑油温度検出器３８の信号に基づき
冷却ファン４０が停止する。このように、従来は高温に
おける油の劣化に着目して、温度管理が行われてきた。In order to detect the lubricating oil temperature in the oil reservoir 41,
A lubricating oil temperature detector 38 is provided. When the lubricating oil temperature exceeds a set value (usually 80 to 90 ° C.), a cooling fan 40 is driven to cool the oil cooler 39 and the oil cooler 3 is cooled.
The lubricating oil passing through 9 is cooled. When the oil temperature of the oil reservoir 41 falls below the set value, the cooling fan 40 stops based on the signal of the lubricating oil temperature detector 38. As described above, conventionally, temperature management has been performed by focusing on deterioration of oil at high temperatures.
【０００９】[0009]
【発明が解決しようとする課題】 しかしながら、鉄道
車両における空気圧縮機３０は、車両が運転中であって
も、連続運転ではなく、圧縮空気の使用量に比例した間
歇運転となり、その稼働率は乗客数の多寡、駅間距離、
および加減速の頻度などの運転条件により大きく変動す
る。However, the air compressor 30 in a railway vehicle is not a continuous operation but an intermittent operation proportional to the amount of compressed air used even when the vehicle is operating, and the operation rate is The number of passengers, the distance between stations,
It varies greatly depending on operating conditions such as the frequency of acceleration and deceleration.
【００１０】そして、大気温度が低く、自然冷却効果が
大きい場合および上記の運転条件により空気圧縮機３０
の稼働率が低い場合には、空気圧縮機３０が低い温度で
長時間運転され、その結果、潤滑油温度および圧縮空気
の温度が低温に保たれた状態が続くことがある。In the case where the atmospheric temperature is low and the natural cooling effect is large, and under the above operating conditions, the air compressor 30
When the operating rate of the air compressor is low, the air compressor 30 is operated at a low temperature for a long time, and as a result, the state in which the lubricating oil temperature and the temperature of the compressed air are kept low may be continued.
【００１１】このとき、空気フィルタ３７から吸入する
大気に水分を含むことは不可避であり、圧縮空気の温度
が露点より低い状態で空気圧縮機３０を運転すると、圧
縮空気中の水分が凝縮してドレンが発生する。このドレ
ンが、潤滑油を乳化させて、その潤滑性能およびシール
性能を低下させるとともに、空気圧縮機を構成する金属
部品の酸化や油の劣化を促進するなどの問題を生じてい
る。本発明は前記事情に基づいて、圧縮空気の水分凝縮
による潤滑油の性能低下を防止することができる空気圧
縮装置の提供を課題とする。At this time, it is inevitable that the air sucked from the air filter 37 contains moisture. If the air compressor 30 is operated in a state where the temperature of the compressed air is lower than the dew point, the moisture in the compressed air is condensed. Drain occurs. This drain causes problems such as emulsifying the lubricating oil, lowering its lubricating performance and sealing performance, and promoting oxidation of metal parts constituting the air compressor and deterioration of oil. An object of the present invention is to provide an air compression device that can prevent the performance of lubricating oil from deteriorating due to condensation of moisture in compressed air based on the above circumstances.
【００１２】[0012]
【課題を解決するための手段】本発明は、空気圧縮機
と、この空気圧縮機から吐出された圧縮空気に含まれる
潤滑油を分離する分油器と、この分油器を通過した圧縮
空気を貯溜する元空気溜を備える空気圧縮装置におい
て、前記空気圧縮機に吸い込む大気温度ｔａを測定し、
その温度ｔａにより決まる圧縮空気の露点に基づき潤滑
油管理温度Ｔｏを定めることを特徴とする空気圧縮装置
である。SUMMARY OF THE INVENTION The present invention provides an air compressor, an oil separator for separating lubricating oil contained in compressed air discharged from the air compressor, and compressed air passing through the oil separator. In an air compressor provided with an original air reservoir for storing air, an atmospheric temperature ta to be sucked into the air compressor is measured,
An air compressor characterized in that a lubricating oil management temperature To is determined based on a dew point of compressed air determined by the temperature ta.
【００１３】従来は高温における劣化に着目して潤滑油
の温度制御を行っていたが、本発明では圧縮空気からの
ドレン発生防止の観点から潤滑油の温度制御を行うこと
とした。つまり、ドレン発生防止のために、大気温度ｔ
ａにおける圧縮空気の露点を求め、この露点に基づき潤
滑油管理温度Ｔｏを定めることとした。より具体的に
は、潤滑油管理温度Ｔｏを前記露点よりも高い値とする
ことにより圧縮空気からのドレン発生を防止しようとす
るものである。もちろん、この管理温度Ｔｏは、高温に
よる潤滑油の劣化防止を考慮したものであることが望ま
しいことは言うまでもない。Conventionally, lubricating oil temperature control has been performed by focusing on deterioration at high temperatures. However, in the present invention, lubricating oil temperature control is performed from the viewpoint of preventing drainage from compressed air. That is, in order to prevent drainage, the atmospheric temperature t
The dew point of the compressed air at a was determined, and the lubricating oil control temperature To was determined based on the dew point. More specifically, it is intended to prevent the generation of drain from compressed air by setting the lubricating oil management temperature To to a value higher than the dew point. Of course, it is needless to say that the control temperature To is desirably set in consideration of prevention of deterioration of the lubricating oil due to a high temperature.
【００１４】本発明においては以下のようにして潤滑油
温度を効率的に制御することが望ましい。すなわち、潤
滑油温度ｔｏの測定値が潤滑油管理温度Ｔｏ未満のとき
には、元空気溜の空気圧力ｐが上限圧力設定値Ｐｈ以上
であっても、圧縮空気を大気に放出しつつ空気圧縮機の
運転を行う。この運転を暖機運転という。暖機運転を行
いつつ、潤滑油温度ｔｏが管理温度Ｔｏに達したときに
は空気圧縮機３０の運転を停止する。In the present invention, it is desirable to efficiently control the lubricating oil temperature as follows. That is, when the measured value of the lubricating oil temperature to is lower than the lubricating oil management temperature To, even if the air pressure p of the source air reservoir is equal to or higher than the upper limit pressure set value Ph, the compressed air of the air compressor is discharged to the atmosphere. Driving. This operation is called warm-up operation. When the lubricating oil temperature to reaches the control temperature To while performing the warm-up operation, the operation of the air compressor 30 is stopped.
【００１５】[0015]
【発明の実施の形態】以下本発明を実施の形態に基づき
説明する。図１において、基本的な機器の構成は図５に
示した従来の装置と同様である。即ち、モータ３１を駆
動して回転式の空気圧縮機３０を運転することにより、
大気が空気フィルタ３７を介して取り入れられ、高温に
なった圧縮空気が潤滑油とともに分油器３２に入り、こ
こで、潤滑油と圧縮空気が分離され、潤滑油はオイルク
ーラ３９を経て再び空気圧縮機３０内に循環されて、空
気圧縮機各部の潤滑、各部隙間のシールおよび圧縮空気
の冷却に利用される。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments. 1, the basic configuration of the device is the same as that of the conventional device shown in FIG. That is, by driving the motor 31 to operate the rotary air compressor 30,
The atmosphere is taken in through the air filter 37, and the hot compressed air enters the oil separator 32 together with the lubricating oil, where the lubricating oil and the compressed air are separated. The air is circulated in the compressor 30 and is used for lubricating various parts of the air compressor, sealing gaps between the parts, and cooling compressed air.
【００１６】一方、圧縮空気は分油器３２からアフター
クーラ３３に入り、ここで概ね４０℃程度まで冷却さ
れ、除湿装置３４で除湿して、乾燥圧縮空気となって元
空気溜３５に貯溜される。元空気溜３５に連通した配管
に調圧器４が取り付けられており、調圧器４は、元空気
溜３５内の空気圧力の上限圧力と下限圧力が設定できる
ようになっており、そして、圧力信号が常時コントロー
ラ１に伝送される。On the other hand, the compressed air enters the aftercooler 33 from the oil separator 32, where it is cooled to approximately 40 ° C., dehumidified by the dehumidifier 34, and stored as dry compressed air in the original air reservoir 35. You. A pressure regulator 4 is attached to a pipe communicating with the source air reservoir 35, and the pressure regulator 4 can set an upper limit pressure and a lower limit pressure of the air pressure in the source air reservoir 35, and Is always transmitted to the controller 1.
【００１７】空気圧縮機３０の大気取入れ口の適当な場
所に大気温度検出器２が設置されており、また、分油器
３２の下部に設けられた油溜４１には潤滑油温度検出器
３が設けられている。これら、大気温度検出器２および
潤滑油温度検出器３により、大気温度および潤滑油温度
を連続的に測定し、その信号を常時コントローラ１に伝
送する。An air temperature detector 2 is installed at an appropriate location of the air intake of the air compressor 30. A lubricating oil temperature detector 3 is provided in an oil sump 41 provided below the oil distributor 32. Is provided. The atmospheric temperature detector 2 and the lubricating oil temperature detector 3 continuously measure the atmospheric temperature and the lubricating oil temperature, and the signals are constantly transmitted to the controller 1.
【００１８】コントローラ１はこれら伝送されてくる信
号に基づいて、管理すべき潤滑油温度を算出して、モー
タ３１および冷却ファン４０を駆動または停止したり、
吐出弁５を“０Ｎ”、“ＯＦＦ”すべく信号を発するよ
うに構成されている。The controller 1 calculates the lubricating oil temperature to be managed based on these transmitted signals, and drives or stops the motor 31 and the cooling fan 40,
It is configured to issue a signal to turn the discharge valve 5 to “0N” and “OFF”.
【００１９】潤滑油は先述のように、低温の環境で使用
するとそれに触れる圧縮空気に発生するドレンによる乳
化によって劣化が加速され、その性能が著しく阻害され
る。また、高温になる程、酸化による劣化が加速され、
潤滑油としての寿命が短くなる。したがって、潤滑油管
理温度は、ドレンが発生しない範囲で、できるだけ低い
温度に設定することが望ましい。As described above, when a lubricating oil is used in a low-temperature environment, its deterioration is accelerated by emulsification due to drainage generated in compressed air that comes into contact with the lubricating oil, and its performance is significantly impaired. In addition, the higher the temperature, the more accelerated the deterioration due to oxidation,
The life as lubricating oil is shortened. Therefore, it is desirable to set the lubricating oil management temperature as low as possible without causing drainage.
【００２０】図２に示す線図は、横軸に大気温度をと
り、縦軸に潤滑油温度をとり、相対湿度１００％の空気
を吸入して、空気圧縮機３０の吐出圧力を9.0 kgf/cm2
としたときのドレンの発生限界を示したものである。な
お、この種空気圧縮装置においては、潤滑油温度と圧縮
空気の出口温度とは一致している。ドレン発生限界線Ｌ
は大気温度に対し、図示の関係で表され、この右側がド
レンを発生する領域であり、ハッチングを施した部分
は、ドレンは発生しない領域である。しかし、高温にな
るほど高温劣化が加速されることを留意する必要があ
る。In the diagram shown in FIG. 2, the abscissa indicates the atmospheric temperature, the ordinate indicates the lubricating oil temperature, the air having a relative humidity of 100% is sucked, and the discharge pressure of the air compressor 30 is set to 9.0 kgf /. cm 2
It shows the generation limit of drain in the case of. In this type of air compressor, the lubricating oil temperature and the outlet temperature of the compressed air match. Drain generation limit line L
Is shown in relation to the atmospheric temperature, and the right side is a region where drain is generated, and the hatched portion is a region where drain is not generated. However, it must be noted that the higher the temperature, the faster the high-temperature degradation.
【００２１】そこで、任意の大気温度ｔａに対し、潤滑
油管理温度Ｔｏをドレン発生限界線Ｌより適当な余裕を
もって高温側に設定するとドレンの発生もなく、また高
温劣化も最小限に抑制できることになる。なお、どの程
度高温側に設定すべきかは、空気圧縮機の機種、運転条
件、潤滑油の種類等の諸条件により定まる。Therefore, if the lubricating oil management temperature To is set to a high temperature side with an appropriate margin from the drain generation limit line L for an arbitrary atmospheric temperature ta, no drain is generated and high temperature deterioration can be suppressed to a minimum. Become. How high the temperature should be set depends on various conditions such as the model of the air compressor, operating conditions, and the type of lubricating oil.
【００２２】次に、図３は横軸に時間をとり、縦軸に潤
滑油温度をとって、潤滑油の温度上昇曲線の例を示した
ものである。先にも述べたように、鉄道車両の空気圧縮
機３０は間歇運転であり、その稼働率は乗客の多寡、駅
間距離および加減速の頻度など、車両の運転条件によっ
て大きく変動する。そして、これら運転条件や大気条件
によっては、図の温度上昇曲線Ａに示すように適正な潤
滑油管理温度Ｔｏに至る時間ＴＡが長く、その間、ドレ
ン発生領域での運転が長時間継続する場合が起きる。Next, FIG. 3 shows an example of a lubricating oil temperature rise curve in which time is plotted on the horizontal axis and lubricating oil temperature is plotted on the vertical axis. As described above, the air compressor 30 of a railway vehicle is an intermittent operation, and the operation rate greatly varies depending on the operating conditions of the vehicle, such as the number of passengers, the distance between stations, and the frequency of acceleration / deceleration. Depending on these operating conditions and atmospheric conditions, the time TA required to reach the appropriate lubricating oil management temperature To is long as shown by the temperature rise curve A in the figure, during which the operation in the drain generation region may continue for a long time. Get up.
【００２３】こうした場合は、空気圧縮機３０の暖機運
転を行い、図の温度上昇曲線Ｂに示すように、ＴＢとい
う短時間で潤滑油の温度を適正な管理温度Ｔｏに昇温
し、ドレンの発生を防ぐ。In such a case, the warm-up operation of the air compressor 30 is performed to raise the temperature of the lubricating oil to the appropriate control temperature To in a short time, TB, as shown by the temperature rise curve B in the figure, and to increase the drainage. To prevent outbreaks.
【００２４】図４は本発明に係る制御システムの作用を
ブロック図に示したものである。図１および図４におい
て、調圧器４の上限圧力設定値Ｐｈ、下限圧力設定値Ｐ
ｍおよび潤滑油上限温度Ｔｅはあらかじめ設定され、コ
ントローラ１にインプットされている。FIG. 4 is a block diagram showing the operation of the control system according to the present invention. 1 and 4, the upper limit pressure value Ph and the lower limit pressure value P of the pressure regulator 4 are shown.
m and the lubricating oil upper limit temperature Te are set in advance and input to the controller 1.
【００２５】調圧器４によって元空気溜３５内圧力ｐ
を、大気温度検出器２によって大気温度ｔａを、そし
て、潤滑油温度検出器３によって潤滑油温度ｔｏを常時
計測し、その信号がコントローラ１に伝送されており、
コントローラ１では大気温度ｔａが電送されると、図２
に示すドレン発生限界線Ｌから、潤滑油管理温度Ｔｏを
定める。The pressure p in the original air reservoir 35 by the pressure regulator 4
The ambient temperature ta is constantly measured by the ambient temperature detector 2 and the lubricating oil temperature to is measured by the lubricating oil temperature detector 3, and the signal is transmitted to the controller 1.
When the atmospheric temperature ta is transmitted by the controller 1, FIG.
The lubricating oil management temperature To is determined from the drain generation limit line L shown in FIG.
【００２６】元空気溜３５内圧力ｐが下限圧力設定値Ｐ
ｍ未満まで降下するとコントローラ１の指令に基づき、
モータ３１が"０Ｎ"になり、空気圧縮機３０が稼動し、
元空気溜３５に圧縮空気を貯溜する。The pressure p in the source air reservoir 35 is equal to the lower limit pressure set value P.
When it falls below m, based on the command of the controller 1,
The motor 31 becomes "0N", the air compressor 30 operates,
The compressed air is stored in the original air reservoir 35.
【００２７】元空気溜３５内の圧力が徐々に上昇して、
上限圧力設定値Ｐｈに達し、かつ、潤滑油温度ｔｏが管
理温度Ｔｏに達していれば、モータ３１が"ＯＦＦ"とな
り空気圧縮機３０が停止する。The pressure in the original air reservoir 35 gradually increases,
If the upper limit pressure set value Ph has been reached and the lubricating oil temperature to has reached the control temperature To, the motor 31 is turned off and the air compressor 30 stops.
【００２８】元空気溜３５内の圧力ｐが上限圧力設定値
Ｐｈに達していても潤滑油温度ｔｏが管理温度Ｔｏまで
達していなければ、吐出弁５が開になり、圧縮空気を大
気中に放出しながら、モータ３１の駆動を継続する。即
ち暖機運転が行われる。そして、暖機運転は潤滑油温度
ｔｏが管理温度Ｔｏに達するまで続けられる。If the lubricating oil temperature to has not reached the control temperature To even if the pressure p in the source air reservoir 35 has reached the upper limit pressure set value Ph, the discharge valve 5 is opened and the compressed air is released to the atmosphere. While discharging, the driving of the motor 31 is continued. That is, the warm-up operation is performed. Then, the warm-up operation is continued until the lubricating oil temperature to reaches the control temperature To.
【００２９】一方、常時計測される潤滑油温度ｔｏが潤
滑油上限温度Ｔｅ（通常約１２０℃程度に設定される）
に達すると、装置に異常事態が発生したとして緊急停止
する。On the other hand, the lubricating oil temperature to which is constantly measured is the lubricating oil upper limit temperature Te (usually set to about 120 ° C.)
Is reached, it is determined that an abnormal condition has occurred in the device, and the device is immediately stopped.
【００３０】通常の場合、潤滑油温度ｔｏが管理温度Ｔ
ｏに達するとオイルクーラ３９の冷却ファン４０が稼動
し、オイルクーラ３９を介して循環する潤滑油を冷却す
る。そして、潤滑油温度ｔｏが管理温度Ｔｏより低い場
合は、先ず、オイルクーラ３９の冷却ファン４０を"Ｏ
ＦＦ"にし、次いで、元空気溜３５内圧力ｐが上限圧力
Ｐｈに達しているか否かをチェックし、達していなけれ
ばそのままモータ３１の駆動を継続し、元空気溜３５内
圧力ｐが上限圧力設定値Ｐｈに達していれば、吐出弁５
を開にし、モータ３１の駆動を継続する。即ち、暖機運
転に入り、潤滑油温度ｔｏが管理温度Ｔｏに達するまで
行う。In a normal case, the lubricating oil temperature to is equal to the control temperature T.
When the temperature reaches o, the cooling fan 40 of the oil cooler 39 operates to cool the lubricating oil circulating through the oil cooler 39. When the lubricating oil temperature to is lower than the control temperature To, first, the cooling fan 40 of the oil cooler 39 is turned to “O”.
FF ", then check whether the pressure p in the original air reservoir 35 has reached the upper limit pressure Ph, and if not, continue driving the motor 31 as it is, and if the pressure p in the original air reservoir 35 becomes the upper limit pressure Ph If the set value Ph has been reached, the discharge valve 5
Is opened, and the driving of the motor 31 is continued. That is, the warm-up operation is started until the lubricating oil temperature to reaches the control temperature To.
【００３１】以上説明した制御システムにより、大気温
度ｔａに対応して、ドレン発生領域での空気圧縮機３０
の運転を速やかに脱出し、かつ、ドレンを発生しない領
域において可能なかぎり、低い温度で運転することによ
り、潤滑油の温度を最適に保つことができる。According to the control system described above, the air compressor 30 in the drain generation region is controlled in accordance with the atmospheric temperature ta.
In this case, the lubricating oil can be maintained at an optimum temperature by operating at a temperature as low as possible in a region where drainage does not occur and in a region where drainage does not occur.
【００３２】[0032]
【発明の効果】以上説明したように、本発明による潤滑
油の温度制御によれば、ドレン発生による潤滑油の乳化
による性能劣化を防止することが可能となる。しかも、
高温劣化をも考慮した温度制御も可能であるから、潤滑
油の潤滑性能およびシール性能を維持することができ
る。また、暖気運転を取り入れることにより、潤滑油管
理温度に対する潤滑油の温度制御を迅速に行うことがで
きる。As described above, according to the lubricating oil temperature control according to the present invention, it is possible to prevent performance deterioration due to emulsification of the lubricating oil due to drainage. Moreover,
Since temperature control taking into account high-temperature deterioration is also possible, the lubricating performance and sealing performance of the lubricating oil can be maintained. Further, by incorporating the warm-up operation, the lubricating oil temperature can be quickly controlled with respect to the lubricating oil management temperature.
【図１】 本発明に係る回転式空気圧縮機の潤滑油温度
制御のシステム構成を示す図である。FIG. 1 is a diagram showing a system configuration of lubricating oil temperature control of a rotary air compressor according to the present invention.
【図２】 大気温度に対するドレン発生限界線を示す図
である。FIG. 2 is a diagram showing a drain generation limit line with respect to an atmospheric temperature.
【図３】 暖機運転による効果を示す図である。FIG. 3 is a diagram illustrating an effect of a warm-up operation.
【図４】 本実施の形態に係るシステムの作用をブロッ
ク図にしたものである。FIG. 4 is a block diagram showing the operation of the system according to the embodiment.
【図５】 従来の回転式空気圧縮機のシステム構成例を
示す図である。FIG. 5 is a diagram showing a system configuration example of a conventional rotary air compressor.
１ コントローラ ２ 大気温度検出器 ３ 潤滑油温度検出器 ４ 調圧器 ５ 吐出弁 Ｐｈ 上限圧力設定値 Ｐｍ 下限圧力設定値 ｐ 空気圧力 ｔａ 大気温度 ｔｏ 潤滑油温度 Ｔｏ 潤滑油管理温度 Ｔｅ 潤滑油上限温度 ３０ 空気圧縮機 ３１ モータ ３２ 分油器 ３３ アフタークーラ ３４ 除湿装置 ３５ 元空気溜 ３７ 空気フィルタ ３９ オイルクーラ ４０ 冷却ファン ４１ 油溜 Reference Signs List 1 Controller 2 Atmospheric temperature detector 3 Lubricating oil temperature detector 4 Regulator 5 Discharge valve Ph Upper limit pressure setting value Pm Lower limit pressure setting value p Air pressure ta Atmospheric temperature to Lubricating oil temperature To Lubricating oil management temperature Te Lubricating oil upper limit temperature 30 Air compressor 31 Motor 32 Oil separator 33 Aftercooler 34 Dehumidifier 35 Original air reservoir 37 Air filter 39 Oil cooler 40 Cooling fan 41 Oil reservoir
Claims (2)
された圧縮空気に含まれる潤滑油を分離する分油器と、
この分油器を通過した圧縮空気を貯溜する元空気溜を備
える空気圧縮装置において、 前記空気圧縮機に吸い込む大気温度ｔａを測定し、その
温度ｔａにより決まる圧縮空気の露点に基づき潤滑油管
理温度Ｔｏを定めることを特徴とする空気圧縮装置。An air compressor, an oil separator for separating lubricating oil contained in compressed air discharged from the air compressor,
In an air compressor having an original air reservoir for storing compressed air passing through the oil separator, an air temperature ta to be sucked into the air compressor is measured, and a lubricating oil control temperature is determined based on a dew point of the compressed air determined by the temperature ta. An air compressor characterized by determining To.
のときには、元空気溜の空気圧力ｐが上限圧力設定値Ｐ
ｈ以上であっても、圧縮空気を大気に放出しつつ空気圧
縮機の運転を続行し、 前記潤滑油温度ｔｏが前記管理温度Ｔｏに達したときに
は、前記空気圧縮機の運転を停止する請求項１に記載の
空気圧縮装置。2. When the lubricating oil temperature “to” is lower than the control temperature “To”, the air pressure “p” of the original air reservoir becomes equal to the upper limit pressure set value “P”.
h, the operation of the air compressor is continued while discharging the compressed air to the atmosphere, and the operation of the air compressor is stopped when the lubricating oil temperature to reaches the management temperature To. 2. The air compression device according to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11094127A JP2000291561A (en) | 1999-03-31 | 1999-03-31 | Air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11094127A JP2000291561A (en) | 1999-03-31 | 1999-03-31 | Air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000291561A true JP2000291561A (en) | 2000-10-17 |
Family
ID=14101761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11094127A Pending JP2000291561A (en) | 1999-03-31 | 1999-03-31 | Air compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000291561A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006226245A (en) * | 2005-02-21 | 2006-08-31 | Mitsubishi Heavy Ind Ltd | Air compressor system |
| CN100340770C (en) * | 2004-03-18 | 2007-10-03 | 西安交通大学 | Control method for exhaust temp of oil spraying rotary compressor |
| CN105352269A (en) * | 2015-12-09 | 2016-02-24 | 超滤动力（安徽）有限公司 | Helix tube type refrigerated dryer assembly |
| CN105673497A (en) * | 2016-04-01 | 2016-06-15 | 上海开山能源装备有限公司 | Standby energy-saving system and method for frequency-conversion screw compressor |
| WO2019093181A1 (en) * | 2017-11-09 | 2019-05-16 | 株式会社神戸製鋼所 | Oil feed-type screw compressor |
| CN111963437A (en) * | 2019-07-31 | 2020-11-20 | 宁波鲍斯能源装备股份有限公司 | Integrated screw vortex two-stage compressor |
-
1999
- 1999-03-31 JP JP11094127A patent/JP2000291561A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100340770C (en) * | 2004-03-18 | 2007-10-03 | 西安交通大学 | Control method for exhaust temp of oil spraying rotary compressor |
| JP2006226245A (en) * | 2005-02-21 | 2006-08-31 | Mitsubishi Heavy Ind Ltd | Air compressor system |
| JP4658636B2 (en) * | 2005-02-21 | 2011-03-23 | 三菱重工業株式会社 | Air compressor |
| CN105352269A (en) * | 2015-12-09 | 2016-02-24 | 超滤动力（安徽）有限公司 | Helix tube type refrigerated dryer assembly |
| CN105673497A (en) * | 2016-04-01 | 2016-06-15 | 上海开山能源装备有限公司 | Standby energy-saving system and method for frequency-conversion screw compressor |
| WO2019093181A1 (en) * | 2017-11-09 | 2019-05-16 | 株式会社神戸製鋼所 | Oil feed-type screw compressor |
| JP2019085971A (en) * | 2017-11-09 | 2019-06-06 | 株式会社神戸製鋼所 | Oil supply type screw compressor |
| CN111295519A (en) * | 2017-11-09 | 2020-06-16 | 株式会社神户制钢所 | Oil supply type screw compressor |
| CN111295519B (en) * | 2017-11-09 | 2022-04-15 | 神钢压缩机株式会社 | Oil supply type screw compressor |
| CN111963437A (en) * | 2019-07-31 | 2020-11-20 | 宁波鲍斯能源装备股份有限公司 | Integrated screw vortex two-stage compressor |
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