EP1304484A3 - Vakuumpumpe - Google Patents
Vakuumpumpe Download PDFInfo
- Publication number
- EP1304484A3 EP1304484A3 EP02023201A EP02023201A EP1304484A3 EP 1304484 A3 EP1304484 A3 EP 1304484A3 EP 02023201 A EP02023201 A EP 02023201A EP 02023201 A EP02023201 A EP 02023201A EP 1304484 A3 EP1304484 A3 EP 1304484A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotary shaft
- pump chamber
- oil
- vacuum pump
- pressure difference
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/06—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for stopping, starting, idling or no-load operation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/008—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
- F04C27/009—Shaft sealings specially adapted for pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/40—Electric motor
- F04C2240/403—Electric motor with inverter for speed control
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressor (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001318893 | 2001-10-17 | ||
JP2001318893A JP3941452B2 (ja) | 2001-10-17 | 2001-10-17 | 真空ポンプにおける運転停止制御方法及び運転停止制御装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1304484A2 EP1304484A2 (de) | 2003-04-23 |
EP1304484A3 true EP1304484A3 (de) | 2003-09-03 |
Family
ID=19136518
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02023201A Withdrawn EP1304484A3 (de) | 2001-10-17 | 2002-10-16 | Vakuumpumpe |
Country Status (3)
Country | Link |
---|---|
US (1) | US20030072651A1 (de) |
EP (1) | EP1304484A3 (de) |
JP (1) | JP3941452B2 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4702236B2 (ja) * | 2006-09-12 | 2011-06-15 | 株式会社豊田自動織機 | 真空ポンプの運転停止制御方法及び運転停止制御装置 |
JP4784484B2 (ja) * | 2006-11-02 | 2011-10-05 | 株式会社豊田自動織機 | 電動ポンプ |
BRPI1100026A2 (pt) * | 2011-01-26 | 2013-04-24 | Whirlpool Sa | sistema e mÉtodo de controle para compressores reciprocos |
US9902251B2 (en) * | 2016-01-26 | 2018-02-27 | Deere & Company | Recess-mounted hydraulic pump cartridge and work vehicle drivetrain therewith |
WO2018138860A1 (ja) * | 2017-01-27 | 2018-08-02 | 株式会社日立産機システム | スクロール圧縮機 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1449257A (fr) * | 1965-10-05 | 1966-08-12 | Dresser Ind | Joint étanche aux lubrifiants pour pompe rotative volumétrique |
EP0674106A1 (de) * | 1994-03-16 | 1995-09-27 | Chemitec Co., Ltd. | Mehrstufige Vakuumpumpe |
EP1006281A1 (de) * | 1998-12-04 | 2000-06-07 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Mehrstufige Roots-Pumpe |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2937807A (en) * | 1956-12-26 | 1960-05-24 | Heraeus Gmbh W C | High vacuum pumps |
JPS63129829A (ja) | 1986-11-14 | 1988-06-02 | Nippon Denso Co Ltd | 真空ポンプ付き発電機 |
JPS6429690A (en) * | 1987-07-22 | 1989-01-31 | Hitachi Ltd | Shaft sealing device for screw vacuum pump |
JPH0311193A (ja) | 1989-06-08 | 1991-01-18 | Daikin Ind Ltd | 真空ポンプ |
US5028220A (en) * | 1990-08-13 | 1991-07-02 | Sullair Corpoation | Cooling and lubrication system for a vacuum pump |
JPH06505079A (ja) * | 1991-03-04 | 1994-06-09 | バルツァース ウント ライボルト ドイチュラント ホールディング アクチエンゲゼルシャフト | 多段式の乾式運転型の真空ポンプに不活性ガスを供給する不活性ガス供給装置 |
JP3593365B2 (ja) * | 1994-08-19 | 2004-11-24 | 大亜真空株式会社 | ねじれ角可変型歯車 |
JP2001304115A (ja) * | 2000-04-26 | 2001-10-31 | Toyota Industries Corp | 真空ポンプにおけるガス供給装置 |
-
2001
- 2001-10-17 JP JP2001318893A patent/JP3941452B2/ja not_active Expired - Fee Related
-
2002
- 2002-10-16 EP EP02023201A patent/EP1304484A3/de not_active Withdrawn
- 2002-10-17 US US10/272,711 patent/US20030072651A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1449257A (fr) * | 1965-10-05 | 1966-08-12 | Dresser Ind | Joint étanche aux lubrifiants pour pompe rotative volumétrique |
EP0674106A1 (de) * | 1994-03-16 | 1995-09-27 | Chemitec Co., Ltd. | Mehrstufige Vakuumpumpe |
EP1006281A1 (de) * | 1998-12-04 | 2000-06-07 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Mehrstufige Roots-Pumpe |
Also Published As
Publication number | Publication date |
---|---|
US20030072651A1 (en) | 2003-04-17 |
EP1304484A2 (de) | 2003-04-23 |
JP2003120543A (ja) | 2003-04-23 |
JP3941452B2 (ja) | 2007-07-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20021016 |
|
AK | Designated contracting states |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
17Q | First examination report despatched |
Effective date: 20031117 |
|
AKX | Designation fees paid |
Designated state(s): DE FR GB |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20041005 |