WO2015117618A1 - Hydraulic positive displacement pump provided with cams having oscillating followers controlled by control of control fluid - Google Patents
Hydraulic positive displacement pump provided with cams having oscillating followers controlled by control of control fluid Download PDFInfo
- Publication number
- WO2015117618A1 WO2015117618A1 PCT/EG2015/000003 EG2015000003W WO2015117618A1 WO 2015117618 A1 WO2015117618 A1 WO 2015117618A1 EG 2015000003 W EG2015000003 W EG 2015000003W WO 2015117618 A1 WO2015117618 A1 WO 2015117618A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- contact
- followers
- cams
- control
- controlled
- 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/22—Rotary-piston machines or pumps of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth-equivalents than the outer member
-
- 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
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
- F01C21/104—Stators; Members defining the outer boundaries of the working chamber
- F01C21/106—Stators; Members defining the outer boundaries of the working chamber with a radial surface, e.g. cam rings
-
- 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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention relates to a hydraulic positive displacement pump activated by cams which impose on a plurality of followers a movement such that they oscillate about their axis with angular rather than rectilinear momentum. Controlling the control fluid volume enables the geometric volume of this type of pump to be controlled. The pump is characterized in that: the axes help to support some of the force resulting from the effect of the control pressure on the followers during the withdrawal cycle, instead of being supported solely by the regions in which the cams and followers are in contact; the exchange of force in the contact regions increases gradually: it is low when they are first in contact and increases as the withdrawal cycle advances. The axes of the oscillating followers form a movement guide which is far better than that of the rectilinear momentum in terms of ease of production and performance. The invention concerns a novel method enabling mutual stresses in the area of contact between a cam and a follower to be reduced and consists in a groove being produced in the cam, the effect of which is to increase flexibility in the peripheral region, enlarge the area of contact, and hence increase the force-distribution surface. This method may be used in any similar technical application.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EG2014020181 | 2014-02-09 | ||
| EG2014020181 | 2014-02-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015117618A1 true WO2015117618A1 (en) | 2015-08-13 |
Family
ID=53777351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EG2015/000003 WO2015117618A1 (en) | 2014-02-09 | 2015-02-08 | Hydraulic positive displacement pump provided with cams having oscillating followers controlled by control of control fluid |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2015117618A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1474962A (en) * | 1973-04-30 | 1977-05-25 | Fiedler M | Fuel injection pump assembly |
| EG23060A (en) * | 2002-07-08 | 2004-02-29 | El Gamil Mohamed Ahmed | Positive displacement pump and motor with multi-rise rotating cam and several followers |
-
2015
- 2015-02-08 WO PCT/EG2015/000003 patent/WO2015117618A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1474962A (en) * | 1973-04-30 | 1977-05-25 | Fiedler M | Fuel injection pump assembly |
| EG23060A (en) * | 2002-07-08 | 2004-02-29 | El Gamil Mohamed Ahmed | Positive displacement pump and motor with multi-rise rotating cam and several followers |
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| Date | Code | Title | Description |
|---|---|---|---|
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