WO2003019009A1 - Fluid displacement pump with backpressure stop - Google Patents
Fluid displacement pump with backpressure stop Download PDFInfo
- Publication number
- WO2003019009A1 WO2003019009A1 PCT/US2002/009986 US0209986W WO03019009A1 WO 2003019009 A1 WO2003019009 A1 WO 2003019009A1 US 0209986 W US0209986 W US 0209986W WO 03019009 A1 WO03019009 A1 WO 03019009A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- blades
- pump according
- axles
- axle
- thickness
- Prior art date
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
- F04C18/082—Details specially related to intermeshing engagement type pumps
- F04C18/084—Toothed wheels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C11/00—Combinations of two or more machines or engines, each being of rotary-piston or oscillating-piston type
- F01C11/006—Combinations of two or more machines or engines, each being of rotary-piston or oscillating-piston type of dissimilar working principle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C11/00—Combinations of two or more machines or engines, each being of rotary-piston or oscillating-piston type
- F01C11/006—Combinations of two or more machines or engines, each being of rotary-piston or oscillating-piston type of dissimilar working principle
- F01C11/008—Combinations of two or more machines or engines, each being of rotary-piston or oscillating-piston type of dissimilar working principle and of complementary function, e.g. internal combustion engine with supercharger
-
- 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
- F04C18/14—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 toothed rotary pistons
- F04C18/16—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 toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
- F04C2/084—Toothed wheels
-
- 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps 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 toothed rotary pistons
- F04C2/16—Rotary-piston machines or pumps 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 toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw 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
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/01—Load
Definitions
- the invention relates to a fluid pump for pumping
- the fluid pump is
- Fluid displacement pumps are subject to a variety of
- a housing formed with a chamber having a wall defined
- axles each carrying a helically rising blade
- said blades having a decreasing thickness from said
- axles to an outer periphery thereof.
- said blades have a rounded surface extending from said
- axle to an outer periphery thereof.
- said rounded surface is defined by a radius of
- the radius of curvature is approximately three times the
- said blades are conical as seen in axial section, with
- a housing formed with a chamber having a wall defined
- axles each carrying a helically rising blade
- said blades having a given thickness and helically
- the axles are preferably cylindrical, i.e., their
- peripheral wall is defined by mutually parallel lines.
- the rounded surface is defined by a radius of curvature in
- the radius of curvature is approximately three times the
- the blade of one helix of the double helix are
- the blades enclose an angle of between
- Fig. 1 is a partial sectional and side-elevational
- Fig. 2 is a top plan view onto the impeller blades
- Fig. 3 is a plan view of the housing
- Fig. 4 is a plan view onto the impeller blades
- Fig. 5 is a side view of two mutually interengaging
- Fig. 6 is an enlarged view of the detail indicated in
- Fig. 7 is an axial section through the axle and a
- Fig. 8 is a diagrammatic sectional view of an
- FIG. 9 is a diagrammatic sectional view of a further embodiment of the blade structure
- Fig. 10 is a diagrammatic section view of yet another
- Fig. 11 is a diagrammatic sectional view of another
- Fig. 12 is a diagrammatic sectional view of yet
- Fig. 13 is a diagrammatic sectional view of an
- Fig. 14 is an elevational view of two equal
- Fig. 15 is an elevational view thereof, after the two
- the fluid pump is a
- the impeller embodiment is a positive
- Each impeller has a
- the fluid flow 11 is at a lesser
- the impeller pump is always closed with regard to a
- the impellers 9A and 9B may be driven at variable
- gear wheels 14A and 14B are connected via gear wheels 14A and 14B, respectively.
- a drive 26 is
- the drive 26 may be, for example, a gear of a toothed
- Fig. 2 is an axial plan view of the impeller system
- the fluid pump may be additionally
- positive displacement system is defined by walls 20 with
- housing has two intersecting circular arches that
- width D may also be expressed as the sum of two times the
- n is the
- Fig. 7 which is a sectional view taken diagonally through
- the blades 9 have a
- winding blades 9 is about 7°.
- the blades may be tapered by a taper
- blades 9 are curved from the inside out with a radius of
- FIG. 8 illustrates an alternative in which the blades
- Fig. 9 illustrates yet another alternative.
- blades are not tapered, but only curved. Again, the radius
- Fig. 10 illustrates a further variation.
- a ratio L/H may range from 5/4 to 2.
- blade 9 is preferably chosen such that ⁇ D is constant.
- FIGs. 11 and 12 illustrate yet a further variation of
- the blades 9 have a
- Fig. 12 The embodiment of Fig. 12 is similar,
- the angle ⁇ is different from 90°.
- the angle ⁇ is different from 90°.
- angle ⁇ 90° is not exclusive of the rounded and/or
- Fig. 10 may be utilized in this embodiment as well.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02728628A EP1421282B1 (en) | 2001-08-27 | 2002-03-28 | Fluid displacement pump with backpressure stop |
ES02728628T ES2295340T3 (en) | 2001-08-27 | 2002-03-28 | FLUID DISPLACEMENT PUMP WITH COUNTERPRESSURE BUMPER. |
AT02728628T ATE377709T1 (en) | 2001-08-27 | 2002-03-28 | DISPLACEMENT PUMP WITH BACK PRESSURE PREVENTION |
DE60223388T DE60223388T2 (en) | 2001-08-27 | 2002-03-28 | DISPLACEMENT PUMP WITH PRESSURE PREVENTION |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1018833 | 2001-08-27 | ||
NL1018833A NL1018833C1 (en) | 2001-08-27 | 2001-08-27 | Fluid displacement pump with mutually inter-engaging helical blades with a backpressure stop to improve pump efficiency |
NL1019337 | 2001-11-09 | ||
NL1019337A NL1019337C1 (en) | 2001-11-09 | 2001-11-09 | Fluid displacement pump with mutually inter-engaging helical blades with a backpressure stop to improve pump efficiency |
NL1019406 | 2001-11-20 | ||
NL1019406 | 2001-11-20 | ||
US10/036,036 | 2001-12-31 | ||
US10/036,036 US6632145B2 (en) | 2000-02-14 | 2001-12-31 | Fluid displacement pump with backpressure stop |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003019009A1 true WO2003019009A1 (en) | 2003-03-06 |
Family
ID=27483714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2002/009986 WO2003019009A1 (en) | 2001-08-27 | 2002-03-28 | Fluid displacement pump with backpressure stop |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1421282B1 (en) |
AT (1) | ATE377709T1 (en) |
DE (1) | DE60223388T2 (en) |
ES (1) | ES2295340T3 (en) |
WO (1) | WO2003019009A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB240285A (en) * | 1924-09-08 | 1925-10-01 | Waldau Maschf | Improvements in or connected with screw pumps |
US2908226A (en) * | 1956-12-31 | 1959-10-13 | Improved Machinery Inc | Intermeshing screw pumps and the like |
US2931308A (en) * | 1957-03-29 | 1960-04-05 | Improved Machinery Inc | Plural intermeshing screw structures |
US3198582A (en) * | 1962-09-12 | 1965-08-03 | Warren Pumps Inc | Screw pump |
US4548562A (en) * | 1982-09-07 | 1985-10-22 | Ford Motor Company | Helical gear pump with specific helix angle, tooth contact length and circular base pitch relationship |
US5120208A (en) * | 1990-10-18 | 1992-06-09 | Hitachi Koki Company Limited | Molecular drag pump with rotors moving in same direction |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1698802A (en) * | 1924-04-07 | 1929-01-15 | Montelius Carl Oscar Josef | Device for transferring energy to or from alpha fluid |
GB419338A (en) * | 1933-01-03 | 1934-11-09 | British Thomson Houston Co Ltd | Improvements in and relating to screw pumps or compressors |
GB2182393A (en) * | 1985-11-04 | 1987-05-13 | Ngk Insulators Ltd | Intermeshing screw pump |
DE4224969C1 (en) * | 1992-07-29 | 1993-09-30 | Heinrich Moeller | Feed screw pair for rotating positive displacement pumps |
DE29720541U1 (en) * | 1997-11-19 | 1999-03-18 | Sihi Ind Consult Gmbh | Screw gas pump |
DE19941787B4 (en) * | 1999-09-02 | 2011-06-16 | Leybold Vakuum Gmbh | Screw vacuum pump with screw flights with changing pitch |
-
2002
- 2002-03-28 ES ES02728628T patent/ES2295340T3/en not_active Expired - Lifetime
- 2002-03-28 DE DE60223388T patent/DE60223388T2/en not_active Expired - Fee Related
- 2002-03-28 EP EP02728628A patent/EP1421282B1/en not_active Expired - Lifetime
- 2002-03-28 WO PCT/US2002/009986 patent/WO2003019009A1/en active Search and Examination
- 2002-03-28 AT AT02728628T patent/ATE377709T1/en not_active IP Right Cessation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB240285A (en) * | 1924-09-08 | 1925-10-01 | Waldau Maschf | Improvements in or connected with screw pumps |
US2908226A (en) * | 1956-12-31 | 1959-10-13 | Improved Machinery Inc | Intermeshing screw pumps and the like |
US2931308A (en) * | 1957-03-29 | 1960-04-05 | Improved Machinery Inc | Plural intermeshing screw structures |
US3198582A (en) * | 1962-09-12 | 1965-08-03 | Warren Pumps Inc | Screw pump |
US4548562A (en) * | 1982-09-07 | 1985-10-22 | Ford Motor Company | Helical gear pump with specific helix angle, tooth contact length and circular base pitch relationship |
US5120208A (en) * | 1990-10-18 | 1992-06-09 | Hitachi Koki Company Limited | Molecular drag pump with rotors moving in same direction |
Also Published As
Publication number | Publication date |
---|---|
ES2295340T3 (en) | 2008-04-16 |
EP1421282A4 (en) | 2005-03-09 |
EP1421282B1 (en) | 2007-11-07 |
DE60223388D1 (en) | 2007-12-20 |
EP1421282A1 (en) | 2004-05-26 |
ATE377709T1 (en) | 2007-11-15 |
DE60223388T2 (en) | 2008-08-28 |
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