GB625490A - Improvements in or relating to pumps of the rotary displacement type - Google Patents
Improvements in or relating to pumps of the rotary displacement typeInfo
- Publication number
- GB625490A GB625490A GB16505/47A GB1650547A GB625490A GB 625490 A GB625490 A GB 625490A GB 16505/47 A GB16505/47 A GB 16505/47A GB 1650547 A GB1650547 A GB 1650547A GB 625490 A GB625490 A GB 625490A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gases
- passed
- impellers
- rotors
- roots
- 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
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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/126—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
-
- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
- F04C29/042—Heating; Cooling; Heat insulation by injecting a fluid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
625,490. Rotary pumps. ROOTS-CONNERSVILLE BLOWER CORPORATION. June 23, 1947, No. 16505. Convention date, July 11, 1946. [Class 110(ii)] A pump of the Roots' blower type, used for pumping hot gases has gas at a higher pressure, but lower temperature introduced from any source into direct contact with the impellers 16 and/or hot gases s passed through a jacket 32, to avoid variation in the running clearances due to differential expansion between the impellers and the casing. Gases from a delivery pipe 24, Fig. 3, are passed through pipes 28, 29 and coolers 30, 31 and admitted to the working chamber where shown. Gases are also circulated through the jacket 32 by way of inlets 33. In a modification the cooling gases are passed into one or both ends of the casing. The rotor shafts 10, 11 are geared together so that the rotors do not make contact with each other. The rotors may be of involute or cycloidal design. Gases other than those being pumped, may be used for cooling.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US625490XA | 1946-07-11 | 1946-07-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB625490A true GB625490A (en) | 1949-06-29 |
Family
ID=22043221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16505/47A Expired GB625490A (en) | 1946-07-11 | 1947-06-23 | Improvements in or relating to pumps of the rotary displacement type |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB625490A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2027272A1 (en) * | 1970-06-03 | 1971-12-09 | Aerzener Maschinenfabrik Gmbh, 3251 Aerzen | Rotary lobe compressors |
| GB2168759A (en) * | 1984-12-07 | 1986-06-25 | Naaktgeboren Maschf Rotterdam | Rotary blower in a pneumatic transporting apparatus |
| US4639199A (en) * | 1983-04-02 | 1987-01-27 | Leybold-Heraeus Gmbh | Two-shaft vacuum pump with internal compression |
| NL8603287A (en) * | 1984-12-07 | 1987-04-01 | Naaktgeboren Maschf Rotterdam | Material-handling pneumatic transporting device - has fluidising discharge bin having discharge and fluidising funnels to disintegrate material |
| EP0225070A1 (en) * | 1985-11-18 | 1987-06-10 | Eaton Corporation | Port arrangement for rotary positive displacement blower |
| GB2383379A (en) * | 2001-10-24 | 2003-06-25 | Aisin Seiki | A multi-stage vacuum pump |
| WO2004036050A1 (en) * | 2002-10-17 | 2004-04-29 | Rand Afrikaans University | Fluid displacement device |
| CZ308233B6 (en) * | 2019-03-20 | 2020-03-11 | Vysoká Škola Báňská-Technická Univerzita Ostrava | A method of carrying out a compression cycle and a compressor for this |
| EP4030056A1 (en) * | 2021-01-19 | 2022-07-20 | Alfa Laval Corporate AB | A rotary positive displacement pump |
| US11441563B2 (en) * | 2018-03-15 | 2022-09-13 | Gardner Denver Schopfheim Gmbh | Rotary piston compressor/pump/blower with a ventilation channel |
-
1947
- 1947-06-23 GB GB16505/47A patent/GB625490A/en not_active Expired
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2027272A1 (en) * | 1970-06-03 | 1971-12-09 | Aerzener Maschinenfabrik Gmbh, 3251 Aerzen | Rotary lobe compressors |
| US4639199A (en) * | 1983-04-02 | 1987-01-27 | Leybold-Heraeus Gmbh | Two-shaft vacuum pump with internal compression |
| GB2168759A (en) * | 1984-12-07 | 1986-06-25 | Naaktgeboren Maschf Rotterdam | Rotary blower in a pneumatic transporting apparatus |
| NL8603287A (en) * | 1984-12-07 | 1987-04-01 | Naaktgeboren Maschf Rotterdam | Material-handling pneumatic transporting device - has fluidising discharge bin having discharge and fluidising funnels to disintegrate material |
| EP0225070A1 (en) * | 1985-11-18 | 1987-06-10 | Eaton Corporation | Port arrangement for rotary positive displacement blower |
| GB2383379B (en) * | 2001-10-24 | 2005-05-18 | Aisin Seiki | Multi-stage vacuum pump |
| GB2383379A (en) * | 2001-10-24 | 2003-06-25 | Aisin Seiki | A multi-stage vacuum pump |
| US6776586B2 (en) | 2001-10-24 | 2004-08-17 | Aisin Seiki Kabushiki Kaisha | Multi-stage vacuum pump |
| WO2004036050A1 (en) * | 2002-10-17 | 2004-04-29 | Rand Afrikaans University | Fluid displacement device |
| US11441563B2 (en) * | 2018-03-15 | 2022-09-13 | Gardner Denver Schopfheim Gmbh | Rotary piston compressor/pump/blower with a ventilation channel |
| US11879458B2 (en) | 2018-03-15 | 2024-01-23 | Gardner Denver Schopfheim Gmbh | Rotary piston compressor/pump/blower with a ventilation channel |
| CZ308233B6 (en) * | 2019-03-20 | 2020-03-11 | Vysoká Škola Báňská-Technická Univerzita Ostrava | A method of carrying out a compression cycle and a compressor for this |
| EP4030056A1 (en) * | 2021-01-19 | 2022-07-20 | Alfa Laval Corporate AB | A rotary positive displacement pump |
| WO2022157167A1 (en) * | 2021-01-19 | 2022-07-28 | Alfa Laval Corporate Ab | A rotary positive displacement pump |
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