GB1185483A - Improvements in or relating to Rotary Positive Displacement Pumps. - Google Patents
Improvements in or relating to Rotary Positive Displacement Pumps.Info
- Publication number
- GB1185483A GB1185483A GB2625867A GB2625867A GB1185483A GB 1185483 A GB1185483 A GB 1185483A GB 2625867 A GB2625867 A GB 2625867A GB 2625867 A GB2625867 A GB 2625867A GB 1185483 A GB1185483 A GB 1185483A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bore
- flow
- rotor
- piston
- speed
- 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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
- F04C15/062—Arrangements for supercharging the working space
-
- 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
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/24—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
- F04C14/26—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels
-
- 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
- F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
- F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
- F04C2/3446—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along more than one line or surface
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Reciprocating Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
1,185,483. Rotary positive-displacement pumps; jet pumps. ROBERT BOSCH G. m.b.H. June 7, 1967 [June 18, 1966], No.26258/67. Headings F1E and F1F. In a rotary positive-displacement hydraulic pump the rate of flow of working fluid in an outlet bore 38 is controlled, and cavitation in spaces between a vaned rotor 29 and abutment ring 12 obviated, by a proportion of the fluid in a passage 37 being drawn through a bye-pass bore 40 into a diffuser by incoming fluid issuing from a tubular member 47 on a spring-loaded piston 49, the diffuser including a conic bore 50, a bore 51 and divergent passages, or branches, 52, 53 communicating at their ends 54, 55 with said spaces between outlet passages 34, 35, which are connected to the passage 37 by an annular chamber 36. When the speed of the rotor is relatively low, the tubular member abuts a ring 57 to prevent flow through the bore 40; and, by virtue of an orifice 43 at the entrance to the bore 38 and a channel 44 transmitting pressure in the last said bore to the upper side of the piston, when the speed of the rotor is sufficiently great the piston is raised to initiate flow in the bye-pass bore. If the pressure in the bore 38 becomes excessive, a spring-loaded valve 60 opens to increase the flow through the bore 51 and hence that through the bore 40 also. A Venturi D is included in the bore 40 (not shown in Fig.1) to ensure a substantially constant flow-rate in the bore 38 despite variations in the speed of the rotor. A bearing body 16 for a driving shaft 22 is axially movable and loaded by pressure in the chamber 36.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB0087625 | 1966-06-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1185483A true GB1185483A (en) | 1970-03-25 |
Family
ID=6983885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2625867A Expired GB1185483A (en) | 1966-06-18 | 1967-06-07 | Improvements in or relating to Rotary Positive Displacement Pumps. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1185483A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2001152A (en) * | 1977-07-14 | 1979-01-24 | Messerschmitt Boelkow Blohm | A heat exchange arrangement for fluid flow systems in aircraft and spacecraft |
-
1967
- 1967-06-07 GB GB2625867A patent/GB1185483A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2001152A (en) * | 1977-07-14 | 1979-01-24 | Messerschmitt Boelkow Blohm | A heat exchange arrangement for fluid flow systems in aircraft and spacecraft |
| GB2001152B (en) * | 1977-07-14 | 1982-01-06 | Messerschmitt Boelkow Blohm | Heat exchange arrangement for fluid flow systems in aircr.and spacecraft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |