GB753772A - Improvements in rotary compressors - Google Patents

Improvements in rotary compressors

Info

Publication number
GB753772A
GB753772A GB14721/54A GB1472154A GB753772A GB 753772 A GB753772 A GB 753772A GB 14721/54 A GB14721/54 A GB 14721/54A GB 1472154 A GB1472154 A GB 1472154A GB 753772 A GB753772 A GB 753772A
Authority
GB
United Kingdom
Prior art keywords
arc
thread
flank
iii
soft metal
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
Application number
GB14721/54A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saurer AG
Original Assignee
Adolph Saurer AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Adolph Saurer AG filed Critical Adolph Saurer AG
Publication of GB753772A publication Critical patent/GB753772A/en
Expired legal-status Critical Current

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
    • F01C19/00—Sealing arrangements in rotary-piston machines or engines
    • F01C19/005—Structure and composition of sealing elements such as sealing strips, sealing rings and the like; Coating of these elements
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

753,772. Rotary pumps. SOC. ANON. A. SAURER. May 19, 1954 [Sept. 21, 1953], No. 14721/54. Class 110(2) A pump of the meshing screw type has each helical thread of the male rotor 2a formed of three main arcs, a leading convex flank I the part Ia of which is an arc of a circle, a trailing flank II which is less convex than the flank I and a middle arc III the purpose of which is to give a better sealing and the length of which is 0.7 to 1 times the length of the arc IV of a thread of the female rotor 3a. Each arc III may have inserted strips 18 of abradable synthetic material (e.g. artificial resin, Neopren) or soft metal running longitudinally along the thread or may have grooves 20 similarly situated which are preferably discontinuous as in Fig. 8 to prevent leakage along them. Each arc III may be covered with a layer of soft metal and the surface of this layer is preferably pitted as at 23 in Fig. 6 to reduce friction between a thread and the casing if they touch. The arcs IV of the female rotor 3a may be similarly treated and the edges 17 may be rounded. The rotors being geared together run with small clearances and in spaced relation and may have equal or unequal numbers of threads. The inlet and outlet ports are trapezium shaped.
GB14721/54A 1953-09-21 1954-05-19 Improvements in rotary compressors Expired GB753772A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH753772X 1953-09-21

Publications (1)

Publication Number Publication Date
GB753772A true GB753772A (en) 1956-08-01

Family

ID=4534105

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14721/54A Expired GB753772A (en) 1953-09-21 1954-05-19 Improvements in rotary compressors

Country Status (1)

Country Link
GB (1) GB753772A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3071314A (en) * 1959-11-12 1963-01-01 Fairchild Stratos Corp Screw compressor seal
US3470791A (en) * 1967-01-13 1969-10-07 Karsten Alfred Ovretveit Sealing in hydraulic machines
US3988081A (en) * 1975-02-21 1976-10-26 Caterpillar Tractor Co. Grooved compression seals for rotary engines
US4028023A (en) * 1974-11-28 1977-06-07 Kernforschungsanlage Julich Gessellschaft Mit Beschrankter Haftung Fluid operable rotary piston device
US4470779A (en) * 1979-06-22 1984-09-11 Whitehouse Ronald C N Rotary fluid machine with expandable rotary obturator
US5035589A (en) * 1990-01-16 1991-07-30 Carrier Corporation Method and apparatus for reducing scroll compressor tip leakage
CN103375176A (en) * 2012-04-17 2013-10-30 伊顿公司 Supercharger rotor with uneven tip surface and method of manufacturing same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3071314A (en) * 1959-11-12 1963-01-01 Fairchild Stratos Corp Screw compressor seal
US3470791A (en) * 1967-01-13 1969-10-07 Karsten Alfred Ovretveit Sealing in hydraulic machines
US4028023A (en) * 1974-11-28 1977-06-07 Kernforschungsanlage Julich Gessellschaft Mit Beschrankter Haftung Fluid operable rotary piston device
US3988081A (en) * 1975-02-21 1976-10-26 Caterpillar Tractor Co. Grooved compression seals for rotary engines
US4470779A (en) * 1979-06-22 1984-09-11 Whitehouse Ronald C N Rotary fluid machine with expandable rotary obturator
US5035589A (en) * 1990-01-16 1991-07-30 Carrier Corporation Method and apparatus for reducing scroll compressor tip leakage
CN103375176A (en) * 2012-04-17 2013-10-30 伊顿公司 Supercharger rotor with uneven tip surface and method of manufacturing same
WO2013158554A3 (en) * 2012-04-17 2014-05-08 Eaton Corporation Supercharger rotor with uneven tip surface and method of manufacturing same

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