GB922121A - Improvements in or relating to rotary pumps or motors - Google Patents
Improvements in or relating to rotary pumps or motorsInfo
- Publication number
- GB922121A GB922121A GB3383259A GB3383259A GB922121A GB 922121 A GB922121 A GB 922121A GB 3383259 A GB3383259 A GB 3383259A GB 3383259 A GB3383259 A GB 3383259A GB 922121 A GB922121 A GB 922121A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rotor
- vanes
- stator
- vane
- motors
- 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
- 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
- F01C21/08—Rotary pistons
-
- 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
- F01C1/00—Rotary-piston machines or engines
- F01C1/30—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F01C1/34—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members
- F01C1/356—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
- F01C1/3566—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer 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)
- Hydraulic Motors (AREA)
Abstract
922,121. Rotary pumps and motors. PRATT PRECISION HYDRAULICS Ltd. Nov. 3, 1960 [Oct. 6, 1959; Feb. 18, 1960], Nos. 33832/59 and 5767/60. Class 110 (2). A rotary hydraulic pump or motor comprises a four-lobed rotor 19 inside a cylindrical space in a stator, and three outwardly sliding spring- loaded vanes 16 set in the stator and bearing on the rotor. The rotor is profiled so that there is a uniform flow of working fluid, and, to reduce wear, the outward acceleration of the vanes is less than the subsequent deceleration and the inward acceleration is greater than the subsequent deceleration. These two conditions are achieved by profiling the rotor so that when 1 1 1 0<#< -then d=4ns#<SP>2</SP> and when - <#< - 2n 2n 2 then d=s - 4ns/n-1 (1/2 - #)<SP>2</SP>, where n is the number of vanes, that is, three in the embodiment shown; # is the angle between one extremity of the lobe and the position at which the adjacent vane contacts the rotor, expressed as a proportion of the lobular pitch 2n/n+1; d is the length of vane protruding from the stator casing and s is the total vane stroke. The springs 17 are covered by caps 18 to facilitate their removal. The components of the pump or motor may be bolted together as in Fig. 6 (not shown) to facilitate removal of parts. The vanes or their rotor-contacting portions may be of synthetic plastic material, and the rotor may be drilled to allow fluid to leak from the bearings to the low pressure side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3383259A GB922121A (en) | 1959-10-06 | 1959-10-06 | Improvements in or relating to rotary pumps or motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3383259A GB922121A (en) | 1959-10-06 | 1959-10-06 | Improvements in or relating to rotary pumps or motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB922121A true GB922121A (en) | 1963-03-27 |
Family
ID=10358029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3383259A Expired GB922121A (en) | 1959-10-06 | 1959-10-06 | Improvements in or relating to rotary pumps or motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB922121A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4017208A (en) * | 1975-06-13 | 1977-04-12 | The United States Of America As Represented By The Secretary Of The Navy | Two-way fluid meter pump |
| US4115045A (en) * | 1973-11-27 | 1978-09-19 | Wyman James C | Rotary motor |
| US4182421A (en) * | 1973-08-24 | 1980-01-08 | Institut Gornogo Dela Akademii Nauk Kazakhskoi Ssr | Pneumatic rock drill |
| US6168401B1 (en) | 1998-05-04 | 2001-01-02 | Luk Automobiltechnik Gmbh & Co. Kg | Hydraulic conveying device |
-
1959
- 1959-10-06 GB GB3383259A patent/GB922121A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4182421A (en) * | 1973-08-24 | 1980-01-08 | Institut Gornogo Dela Akademii Nauk Kazakhskoi Ssr | Pneumatic rock drill |
| US4115045A (en) * | 1973-11-27 | 1978-09-19 | Wyman James C | Rotary motor |
| US4017208A (en) * | 1975-06-13 | 1977-04-12 | The United States Of America As Represented By The Secretary Of The Navy | Two-way fluid meter pump |
| US6168401B1 (en) | 1998-05-04 | 2001-01-02 | Luk Automobiltechnik Gmbh & Co. Kg | Hydraulic conveying device |
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