JPH0422790A - Oil-sealed rotary vacuum pump - Google Patents
Oil-sealed rotary vacuum pumpInfo
- Publication number
- JPH0422790A JPH0422790A JP12617690A JP12617690A JPH0422790A JP H0422790 A JPH0422790 A JP H0422790A JP 12617690 A JP12617690 A JP 12617690A JP 12617690 A JP12617690 A JP 12617690A JP H0422790 A JPH0422790 A JP H0422790A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- vacuum pump
- case
- rotary vacuum
- oil case
- 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
- 239000000843 powder Substances 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、油回転真空ポンプに関する。[Detailed description of the invention] [Industrial application field] The present invention relates to an oil rotary vacuum pump.
第５図及び第６図は従来の一例を示す油回転ポンプの部
分破断側面図及び正面図である。従来油回転真空ポンプ
は、同図に示すように、回転するロータ５が内蔵された
オイルケース２と、このロータ５を回転させるとともに
オイルケース２の一端に取付けられたモータ１とで構成
されていた。FIGS. 5 and 6 are a partially cutaway side view and a front view of an oil rotary pump showing an example of a conventional oil rotary pump. As shown in the figure, a conventional oil rotary vacuum pump consists of an oil case 2 in which a rotating rotor 5 is built-in, and a motor 1 that rotates the rotor 5 and is attached to one end of the oil case 2. Ta.
また、オイルケース２の外壁には、オイル４が適量に充
填されているか否かを確認するのぞき窓３が設けられて
おり、通常、運転時にオイル４がオイルケース２に適量
が入っているかを、こののぞき窓３内にオイル面６があ
るか否かで確認していた。In addition, a viewing window 3 is provided on the outer wall of the oil case 2 to check whether the appropriate amount of oil 4 is filled in the oil case 2. , it was confirmed whether or not there was an oil surface 6 within this peephole 3.
上述した従来の油回転真空ポンプでは、のぞき窓は、円
形状で、小さい窓枠内の範囲で、充填されているオイル
量を推定しているのでオイルの増減判定に正確な判定が
出来ない、また、オイルの汚れ、オイルケース底面近く
の金属くずのよどみ遠も観察出来ない。従って、視界内
辺外に存在するオイルに含む金属くず等により、油回転
真空ポンプの回転ロータとオイルケースの間でスクラッ
チを引き起し、ポンプの排気容量を劣化させるという欠
点がある。本発明の目的は、かかる欠点を解消し、常に
オイルの状態を観察出来、安定に運電が出来る油回転真
空ポンプを提供することにある。In the conventional oil rotary vacuum pump mentioned above, the viewing window is circular and the amount of oil filled is estimated within the small window frame, so it is not possible to accurately determine the increase or decrease of oil. Also, it is impossible to observe oil dirt or stagnation of metal scraps near the bottom of the oil case. Therefore, there is a drawback that metal chips and the like contained in the oil present inside and outside the field of view cause scratches between the rotary rotor of the oil rotary vacuum pump and the oil case, thereby degrading the pump's exhaust capacity. It is an object of the present invention to provide an oil rotary vacuum pump that eliminates such drawbacks, allows constant observation of oil conditions, and allows stable power transfer.
本発明の油回転真空ポンプは、密閉型オイルケース内部
に充填したオイルの量をオイルケースの外部より観察で
きる油回転真空ポンプにおいて、前記オイルケースの底
面に通じるとともに垂直方向に伸びる縦長の透明な部分
を有することを特徴としている。The oil rotary vacuum pump of the present invention is an oil rotary vacuum pump in which the amount of oil filled inside a sealed oil case can be observed from the outside of the oil case. It is characterized by having a part.
第１図及び第２図は本発明の一実施例を示す油回転真空
ポンプの断面図及び側面図である。この油回転真空ポン
プは、第１図及び第２図に示すように、オイルケース２
の底面近くより縦長に伸びる透明なチューブ３ａを設け
たことである。このことにより、オイルケース２内部に
充填したオイル４の量をオイルケース２の外部より観察
することができる構造になる。また、オイル適量範囲７
より垂直方向に観察範囲を広げることにより広い範囲の
オイル４の量を観察できるので、オイルケースの底部に
よどむ金属粉の有無の確認も容易に観察出来る。1 and 2 are a sectional view and a side view of an oil rotary vacuum pump showing an embodiment of the present invention. As shown in Figs. 1 and 2, this oil rotary vacuum pump has an oil case 2.
A transparent tube 3a is provided that extends vertically from near the bottom of the tube. This provides a structure in which the amount of oil 4 filled inside the oil case 2 can be observed from the outside of the oil case 2. Also, oil appropriate amount range 7
By widening the observation range in the vertical direction, the amount of oil 4 can be observed over a wide range, making it easy to observe the presence or absence of metal powder stagnant at the bottom of the oil case.
第３図及び第４図は本発明の他の実施例を示す断面図及
び側面図である。この実施例では、オイルケース２の底
面より縦方向に伸びるのぞき窓３ｂを設けたことである
。この実施例は、前述の実施例と比べ、オイルケース２
とのぞき窓と通じる穴が大きいので、オイル入口部で異
物が詰まることなくオイル量観察不可及びオイル量誤判
定することがなくなるという利点がある。3 and 4 are a sectional view and a side view showing another embodiment of the present invention. In this embodiment, a viewing window 3b is provided that extends vertically from the bottom surface of the oil case 2. In this embodiment, compared to the previous embodiment, the oil case 2
Since the hole that communicates with the observation window is large, there is an advantage that the oil inlet will not be clogged with foreign matter, making it impossible to observe the oil amount or erroneously determining the oil amount.
以上説明したように本発明は、油回転真空ポンプのオイ
ル状態を観察する視界範囲を広げることによって、オイ
ルレベルをも容易に観察出来るとともにオイルの汚れ状
態も観察出来るので、常に安定した運転の出来る油回転
真空ポンプが得られるという効果がある。As explained above, the present invention widens the field of view for observing the oil condition of an oil rotary vacuum pump, making it easier to observe the oil level and also the dirtiness of the oil, thereby ensuring stable operation at all times. This has the effect of providing an oil rotary vacuum pump.
第１図及び第２図は本発明の一実施例を示す油回転真空
ポンプの断面図及び側面図、第３図及び第４図は本発明
の他の実施例を示す油回転真空ポンプの断面図及び側面
図、第５図及び第６図は従来の一例を示す油回転真空ポ
ンプの断面図及び側面図である。
１・・・モータ、２・・・オイルケース、３，３ｂ・・
・のぞき窓、３ａ・・・透明なチューブ、４・・・オイ
ル、５・・・ロータ、６・・・オイル面、７・・・オイ
ル適量範囲。1 and 2 are a cross-sectional view and a side view of an oil rotary vacuum pump showing one embodiment of the present invention, and FIGS. 3 and 4 are cross sections of an oil rotary vacuum pump showing another embodiment of the present invention. FIG. 5 and FIG. 6 are a sectional view and a side view of an oil rotary vacuum pump, which is an example of a conventional oil rotary vacuum pump. 1...Motor, 2...Oil case, 3, 3b...
- Peephole, 3a...Transparent tube, 4...Oil, 5...Rotor, 6...Oil surface, 7...Oil appropriate amount range.
Claims (1)
ルケースの外部より観察できる油回転真空ポンプにおい
て、前記オイルケースの底面に通じるとともに垂直方向
に伸びる縦長の透明な部分を有することを特徴とする油
回転真空ポンプ。An oil rotary vacuum pump that allows the amount of oil filled inside the sealed oil case to be observed from the outside of the oil case, characterized by having a vertically elongated transparent part that communicates with the bottom surface of the oil case and extends in the vertical direction. Rotary vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12617690A JPH0422790A (en) | 1990-05-16 | 1990-05-16 | Oil-sealed rotary vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12617690A JPH0422790A (en) | 1990-05-16 | 1990-05-16 | Oil-sealed rotary vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0422790A true JPH0422790A (en) | 1992-01-27 |
Family
ID=14928563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12617690A Pending JPH0422790A (en) | 1990-05-16 | 1990-05-16 | Oil-sealed rotary vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0422790A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3178736U (en) * | 2012-07-18 | 2012-09-27 | 彰 大場 | Rotary pump |
| JP2013133751A (en) * | 2011-12-27 | 2013-07-08 | Hitachi Appliances Inc | Compressor and refrigeration air conditioner |
-
1990
- 1990-05-16 JP JP12617690A patent/JPH0422790A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013133751A (en) * | 2011-12-27 | 2013-07-08 | Hitachi Appliances Inc | Compressor and refrigeration air conditioner |
| JP3178736U (en) * | 2012-07-18 | 2012-09-27 | 彰 大場 | Rotary pump |
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