ES342045A1 - Screw rotor machines and profiles - Google Patents
Screw rotor machines and profilesInfo
- Publication number
- ES342045A1 ES342045A1 ES342045A ES342045A ES342045A1 ES 342045 A1 ES342045 A1 ES 342045A1 ES 342045 A ES342045 A ES 342045A ES 342045 A ES342045 A ES 342045A ES 342045 A1 ES342045 A1 ES 342045A1
- Authority
- ES
- Spain
- Prior art keywords
- rotor
- clearance
- main
- gate rotor
- gate
- 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
- F01C1/00—Rotary-piston machines or engines
- F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
- F01C1/12—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type
- F01C1/14—Rotary-piston machines or engines 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
- F01C1/16—Rotary-piston machines or engines 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
- 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
- F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
- F01C1/082—Details specially related to intermeshing engagement type machines or engines
- F01C1/084—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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
Abstract
In a screw rotor machine comprising a housing having a pair of intersecting parallel bores and main and gate rotors mounted for rotation within the bores which have at least three inter-meshing helical threads and grooves with the gate rotor having at least one more thread and groove than the main rotor and with the threads of the main rotor having generally convex flanks and lying substantially outside the pitch circle and the threads of the gate rotor having generally concave flanks and lying substantially inside the pitch circle, the thread profiles are such that portions thereof have zero clearance therebetween to provide areas subjected to the pressure of the gaseous working fluid to produce an internal driving torque which in oil-flooded compressors or machines enables synchronizing gears to be dispensed with without any risk of wear of the rotor profiles. Also other portions of the threads have clearance therebetween large enough to ensure that contact will not occur during running. In Fig. 7, M and G indicate main and gate rotor axes, R 1 and R 2 main and gate rotor pitch circle radii and R M and R G main and gate rotor bores with the bore of the gate rotor equal to its pitch circle. A short straight radial portion a 2 -b 2 on the leading flank of the gate rotor forms a band seal portion which generates a first root portion a 1 -b 1 on the trailing flank of the main rotor to give a zero or minimum clearance Cl8, Figs. 10e. The point b 2 generates a second portion on the trailing flank of the main rotor between the root portion and crest C 1 to give a clearance Cl 6, Fig. 10d large enough to give a clearance under all operating conditions of pressure and temperature. Similarly a short radial portion e 2 -d 2 on the trailing flank of the gate rotor forms a band seal portion which generates a root portion e 1 -d 1 on the leading flank of the main rotor to give a zero or minimum clearance Cl 2, Fig.10c. Portion d 2 -c2 of the gate rotor and portion d 1 -C 1 of the main rotor are circular arcs with point P, the intersection point of the pitch circle as centre with a clearance Cl 4 therebetween again sufficient to ensure clearance in all operating conditions. Clearance Cl 1, Fig,10a, between the crest of the gate rotor and the trough of the main rotor is less than the clearance Cl 5 between crest c 1 of main rotor and b 2 -c 2 of gate rotor, the clearance Cl 7 between the crest C 1 and trough c 2 of the gate rotor and the clearance Cl 4. Clearances Cl 1, Cl 8, and Cl 2 are less than conventional clearances to the extent of being about 70% thereof whilst clearances Cl 6, Cl 4, Cl 5 and Cl 7 are larger than conventional clearances and about 130% thereof. Points 1, 2, 3, 4, 5, 6, Fig. 12 indicate the sealing line between the rotors and x, y, z radial distances of the sealing line from the gate rotor axis. Area A is acted upon by internal pressure to give a driving action and area B to give a braking action to the gate rotor with the influence of the area A greater than that of area B so that it is possible to drive the gate rotor without the use of synchronizing gears.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US564469A US3414189A (en) | 1966-06-22 | 1966-06-22 | Screw rotor machines and profiles |
Publications (1)
Publication Number | Publication Date |
---|---|
ES342045A1 true ES342045A1 (en) | 1968-07-16 |
Family
ID=24254595
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES342045A Expired ES342045A1 (en) | 1966-06-22 | 1967-06-20 | Screw rotor machines and profiles |
Country Status (15)
Country | Link |
---|---|
US (1) | US3414189A (en) |
AT (1) | AT279024B (en) |
BE (1) | BE700077A (en) |
CH (1) | CH495509A (en) |
CS (1) | CS161695B2 (en) |
DD (1) | DD72218A5 (en) |
DE (1) | DE1551072A1 (en) |
DK (1) | DK134412B (en) |
ES (1) | ES342045A1 (en) |
FI (1) | FI47134C (en) |
FR (1) | FR1535573A (en) |
GB (1) | GB1189856A (en) |
NL (1) | NL156480B (en) |
NO (1) | NO118932B (en) |
YU (1) | YU31658B (en) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3535057A (en) * | 1968-09-06 | 1970-10-20 | Esper Kodra | Screw compressor |
BE756510A (en) * | 1969-09-23 | 1971-03-01 | Atlas Copco Ab | IMPROVEMENTS IN HELICOIDAL ROTOR MACHINES |
US3623830A (en) * | 1970-04-01 | 1971-11-30 | Bird Island Inc | Rotor with helical teeth for displacing compressible fluid |
BE792576A (en) * | 1972-05-24 | 1973-03-30 | Gardner Denver Co | SCREW COMPRESSOR HELICOIDAL ROTOR |
US3773444A (en) * | 1972-06-19 | 1973-11-20 | Fuller Co | Screw rotor machine and rotors therefor |
US4028026A (en) * | 1972-07-14 | 1977-06-07 | Linde Aktiengesellschaft | Screw compressor with involute profiled teeth |
US4053263A (en) * | 1973-06-27 | 1977-10-11 | Joy Manufacturing Company | Screw rotor machine rotors and method of making |
US4140445A (en) * | 1974-03-06 | 1979-02-20 | Svenka Rotor Haskiner Aktiebolag | Screw-rotor machine with straight flank sections |
US4088427A (en) * | 1974-06-24 | 1978-05-09 | Atlas Copco Aktiebolag | Rotors for a screw rotor machine |
US4109362A (en) * | 1976-01-02 | 1978-08-29 | Joy Manufacturing Company | Method of making screw rotor machine rotors |
US4224015A (en) * | 1977-01-19 | 1980-09-23 | Oval Engineering Co., Ltd. | Positive displacement flow meter with helical-toothed rotors |
DE2911415C2 (en) * | 1979-03-23 | 1982-04-15 | Karl Prof.Dr.-Ing. 3000 Hannover Bammert | Parallel and external axis rotary piston machine with meshing engagement |
SE429783B (en) * | 1981-12-22 | 1983-09-26 | Sullair Tech Ab | ROTORS FOR A SCREW ROTATOR |
FR2562166B1 (en) * | 1984-03-28 | 1986-07-18 | Dba | VOLUMETRIC SCREW COMPRESSOR |
JPS6117191U (en) * | 1984-07-04 | 1986-01-31 | 株式会社神戸製鋼所 | Screw compressor |
DE19850030A1 (en) * | 1998-10-30 | 2000-05-11 | Kraeutler Ges M B H & Co | Device for measuring the amount of liquid in petrol pumps of motor vehicle petrol stations |
IL134219A0 (en) * | 2000-01-25 | 2001-04-30 | Gotit Ltd | Spray dispenser |
DE10101512C2 (en) * | 2001-01-12 | 2002-11-21 | Schiedel Gmbh & Co | Device for heat recovery from exhaust air |
DE102005005347A1 (en) * | 2005-01-31 | 2006-10-26 | Kayser, Albrecht, Dipl.-Ing. | Screw-type rotary compressor has large rotor intermeshing with secondary smaller rotor with convex peak interface profiles |
BE1016733A3 (en) * | 2005-08-25 | 2007-05-08 | Atlas Copco Airpower Nv | IMPROVED LOW PRESSURE SCREW COMPRESSOR. |
JP5136878B2 (en) * | 2006-03-14 | 2013-02-06 | 有限会社スクロール技研 | Scroll fluid machinery |
US9057373B2 (en) | 2011-11-22 | 2015-06-16 | Vilter Manufacturing Llc | Single screw compressor with high output |
US10451065B2 (en) * | 2014-06-26 | 2019-10-22 | Svenska Rotor Maskiner Ab | Pair of co-operating screw rotors |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2477002A (en) * | 1942-07-25 | 1949-07-26 | Joy Mfg Co | Gear type air pump with changespeed gearing and lubrication |
US2457314A (en) * | 1943-08-12 | 1948-12-28 | Jarvis C Marble | Rotary screw wheel device |
US2473234A (en) * | 1943-10-06 | 1949-06-14 | Joseph E Whitfield | Helical asymmetrical thread forms for fluid devices |
US2486770A (en) * | 1946-08-21 | 1949-11-01 | Joseph E Whitfield | Arc generated thread form for helical rotary members |
IT454201A (en) * | 1947-07-16 | |||
CH324301A (en) * | 1953-10-24 | 1957-09-15 | Saurer Ag Adolph | Circulating compressor with helically toothed rotors |
US2922377A (en) * | 1957-09-26 | 1960-01-26 | Joseph E Whitfield | Multiple arc generated rotors having diagonally directed fluid discharge flow |
SE312394B (en) * | 1965-05-10 | 1969-07-14 | A Lysholm | |
US3245612A (en) * | 1965-05-17 | 1966-04-12 | Svenska Rotor Maskiner Ab | Rotary piston engines |
-
1966
- 1966-06-22 US US564469A patent/US3414189A/en not_active Expired - Lifetime
-
1967
- 1967-06-01 GB GB25352/67A patent/GB1189856A/en not_active Expired
- 1967-06-09 NO NO168531A patent/NO118932B/no unknown
- 1967-06-15 DK DK309767AA patent/DK134412B/en not_active IP Right Cessation
- 1967-06-16 AT AT05618/67A patent/AT279024B/en not_active IP Right Cessation
- 1967-06-16 BE BE700077D patent/BE700077A/xx not_active IP Right Cessation
- 1967-06-19 CS CS4486A patent/CS161695B2/cs unknown
- 1967-06-20 DE DE19671551072 patent/DE1551072A1/en active Pending
- 1967-06-20 FR FR111108A patent/FR1535573A/en not_active Expired
- 1967-06-20 ES ES342045A patent/ES342045A1/en not_active Expired
- 1967-06-21 YU YU1243/67A patent/YU31658B/en unknown
- 1967-06-21 FI FI671752A patent/FI47134C/en active
- 1967-06-21 CH CH880367A patent/CH495509A/en not_active IP Right Cessation
- 1967-06-21 DD DD12545367A patent/DD72218A5/en unknown
- 1967-06-22 NL NL6708716.A patent/NL156480B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
BE700077A (en) | 1967-12-18 |
DE1551072A1 (en) | 1970-03-05 |
NL6708716A (en) | 1967-12-27 |
YU124367A (en) | 1973-04-30 |
FI47134C (en) | 1973-09-10 |
NL156480B (en) | 1978-04-17 |
CS161695B2 (en) | 1975-06-10 |
FR1535573A (en) | 1968-08-09 |
DD72218A5 (en) | 1970-04-05 |
DK134412C (en) | 1977-04-04 |
GB1189856A (en) | 1970-04-29 |
NO118932B (en) | 1970-03-02 |
CH495509A (en) | 1970-08-31 |
FI47134B (en) | 1973-05-31 |
US3414189A (en) | 1968-12-03 |
DK134412B (en) | 1976-11-01 |
YU31658B (en) | 1973-10-31 |
AT279024B (en) | 1970-02-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19840203 |