EP1216358A1 - Compresseur ou pompe a vide a spirales - Google Patents
Compresseur ou pompe a vide a spiralesInfo
- Publication number
- EP1216358A1 EP1216358A1 EP00966206A EP00966206A EP1216358A1 EP 1216358 A1 EP1216358 A1 EP 1216358A1 EP 00966206 A EP00966206 A EP 00966206A EP 00966206 A EP00966206 A EP 00966206A EP 1216358 A1 EP1216358 A1 EP 1216358A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- capsulism
- same
- radius
- cell
- 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.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 238000002347 injection Methods 0.000 claims abstract description 3
- 239000007924 injection Substances 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims abstract description 3
- 230000006835 compression Effects 0.000 claims description 27
- 238000007906 compression Methods 0.000 claims description 27
- 239000003507 refrigerant Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000005461 lubrication Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 239000003921 oil Substances 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000003027 ear inner Anatomy 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000135 prohibitive effect Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/04—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents of internal-axis type
Definitions
- the present invention relates to a new type of capsulism for a rotary machine conveying a gaseous fluid and which can function as a compressor or as a vacuum pump.
- capsulism designates the production of a variable closed volume.
- the invention relates more precisely to a new family of “dry” vacuum compressors or pumps, in particular a family of particularly compact, light, one, two or three stage air or gas compressors which can discharge under low pressure, medium or high (for example 3, 8 or 20 bars, respectively).
- the invention aims to compete with both:
- this type of compressor only rises very gradually in pressure and must have several turns to reach only low pressure, or medium pressure for very small flows. It then has long lines of flight, hence the use of segments at the end of the rotor blades (except for very low pressures) rubbing on the stator, and vice versa. This use of dry rubbing segments strongly limits the speed of rotation.
- the progressive curvatures generate a low coefficient of upstream-downstream pressure drop, and favor leaks. The friction of the segments added to these leaks and to the fact that the compression is very progressive, causes additional heating during compression, to the detriment of the efficiency of the compressors of this type.
- the present invention aims to remedy the aforementioned drawbacks:
- medium pressure compressors they are designed with low pressure cells, delivering to an air or gas refrigerant, and medium pressure, sucking in this same refrigerant, which improves compression efficiency and avoids temperatures and deformations profiles, due to the heat given off by the compressed air, prohibitive.
- basic cell it will be seen that, in the context of the invention, it is possible to have, in the same compression chamber, several basic cells, for example two or more identical cells (simple or juxtaposed) for low pressure, and similarly for medium pressure.
- the fact that the low pressure part and the medium pressure part are in the same chamber brings obviously a great simplification of design and a gain in weight, compactness, in cost price.
- the conclusions are the same if there is also a high pressure part.
- the invention relates, in its most general sense, to a capsulism for a rotary machine conveying a gaseous fluid and capable of operating as a compressor or as a vacuum pump, characterized in that the blade of the movable rotor (1) of a base cell consists of two spirals in opposite directions, the first communicating with the suction As and the second with the discharge Re, these two spirals giving the rotor the shape of the letter "C" with a total angle AT greater than 360 °, where AT denotes the total angle formed between the normal of a first end of the median curved line of the rotor, and the normal of the opposite end.
- the radius of curvature of the midline increases from each of the ends, up to a maximum radius for the middle zone of the capsulism.
- compression ratio will be understood to mean the ratio between the volume of the compression chamber when the compression orifice is closed, and the volume of this compression chamber when the compression is opened. delivery port.
- the essential technical characteristic of the capsulism according to the invention relates to the angle formed between the extreme rays, which is greater than 360 °.
- French patent FR825643 describes a device comprising closed chambers having a total angle less than 360 °.
- the patent US1967957 also describes a device having a traditional capsulism, not making it possible to produce a compressor within the meaning of the present patent, nor a vacuum pump.
- the basic cell which includes two compression cells.
- the rotor as in scroll compressors, is driven by two parallel shafts by means of two eccentrics of the same eccentricity E.
- Each point of the rotor therefore describes, in its movement, a circle, or an "orbit", of radius E.
- FIG. 1 we consider three parallel curves, more precisely two envelope curves C2, C3 of circles T of the same radius E, the center of which moves on a given curve Cl.
- the simplest possible basic cell has the shape of the letter C.
- a theoretical cell in which the blade or the rotor blade, in the section orthogonal to the axes of the drive shafts, has no thickness, which simplifies the description.
- a rotor 1 being assumed to have zero eccentricity, compared to a fixed stator 2, will be said to be “in the middle position” - which it never occupies in practice, its eccentricity being always equal to E -. Its dawn has the shape of a C.
- the fixed stator is the envelope of circles of radius E centered on the rotor in the middle position.
- Curve C can be made up of two spirals in opposite directions, one of direction -, going from the suction As towards B, and one of direction +, going from the discharge Re towards B.
- Curve C should form, on the discharge Re, a loop which is all the more closed as the higher discharge pressure is desired. It will suffice that it stops horizontally, or almost, at the suction
- the center line of the rotor (1) has two ends (110, 111).
- the normals respectively (100) and (101) at the ends (110, 111) form between them a total angle exceeding 360 °, in the example described in FIG. 3, this total angle approaches 500 °.
- the radius of curvature of the center line of the rotor gradually increases from each of the ends, to an intermediate zone.
- the dials show the common angle of rotation of the two drive eccentrics.
- an upper cell and a lower cell fill up once per turn, and discharge before half a turn.
- the theoretical cubic capacity of the cell is equal to the sum of the areas SA and SB multiplied by the length of the compression chamber, or of the rotor, parallel to the axes of the drive shafts.
- the scroll compressor consists of successive envelopes of the same basic spiral, generated by circles Tl, T2, T3 ... of the same radius E, located on the same normal N to the basic spiral, in Re, whose centers describe, by turning, the rotor (assumed to have no thickness) in the middle position, and whose intersections with N describe the stator.
- the basic cell of the C-shaped compressor has its stator defined directly by the envelope of the circles sliding on the rotor serving as generator.
- the rotor curve can be, in the context of the invention, described by several arcs of successive circles.
- the maximum speed of the air in the cell is indeed ⁇ .R, and the orbital speed of any point of the rotor is ⁇ .E, which makes it possible to multiply the speed in the R / E ratio, and therefore of obtain a high flow rate in a small footprint, the R / E ratio can exceed 10.
- this shows a compression chamber in which the drive shafts do not pass through the rotor, which is cantilevered.
- this represents a version in which the two shafts provided with eccentrics cross the rotor, on a low pressure compressor with cells juxtaposed two by two.
- this represents the diagram of a medium pressure compressor: the two large cells discharge the compressed air into an Rfl refrigerant then until the final pressure in the two small cells.
- a final refrigerant Rf2 completes this achievement.
- the cells are grouped head to tail, to reduce the reactions of the bearings.
- the trees which appear there, subjected to the same efforts on average, for reason of symmetry, can be identical as well as their seals, bearings and counterweights.
- FIG. 12 shows a three-stage compressor with through shafts.
- the rotors must be balanced radially, especially if the rotational speed is high, but this is easy to achieve, because said rotors have a low mass due to their compact and hollow shape, and a low eccentricity with regard to their displacement.
- FIG 15 it shows a possible embodiment of the sealing at medium speed, where one of the two identical shafts shown is notched to achieve all or part of the balancing.
- the shaft 3 drives the rotor 4 by means of needle bearings 5, attached to seals 6, retaining the oil, the circulation under low pressure is indicated by arrows.
- this shows another design, for compressors rotating at high speed, where the bearing 7 is force fitted into the rotor 8.
- the sealing of the oil leaks is ensured by a barrier of air, taken from the discharge (in the rotor), at the two ends of the offset pin 9 of one of the two identical drive shafts.
- the action of the compressed air is completed by two threads in opposite directions bringing the oil back to the center of the crankpin.
- the crankpin is of a slightly smaller diameter in the parts comprising threads and grooves, so that the bearing does not rub in these parts little or not lubricated.
- FIG 17 shows an overview of a low pressure compressor, in which the eccentrics, in the center of the rotor, are at the end of the shafts.
- the tree 10 shown rotates in the stator 11 by means of the bearings 12 and 13.
- the eccentric drives the rotor 22 by means of the bearing 14.
- the seals 15, 16 and 17 isolate the compression chamber from the lubricating oil.
- the oil inlet, in the stator 11, is located between the bearing 12 and the seal 17.
- the pinion 18 meshes with the wheel 19 which also drives the other shaft.
- Counterweights 20 and 21 balance the rotor in the radial direction.
- the axial stops are not shown in the figures of the present application, so as not to complicate them excessively.
- the capsulism according to the invention has been designed in particular (but not exclusively) to allow the production of compressors with lower flow rates than screw compressors.
- the border of a given family of compressors when the dimensions decrease, comes from the relative increase in clearances, limited by the achievable tolerances, the arrows of the parts, the settlement of the bearings, the relative expansions of the neighboring members, all values that 'One cannot reduce beyond certain limits.
- the family of “dry” air or gas capsulisms according to the invention will also have its own lower flow limit.
- the total angle formed between the normal of a first end of the median curved line of the rotor, and the normal at the opposite end is greater than 360 °.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
- Peptides Or Proteins (AREA)
- Reciprocating Pumps (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9912143 | 1999-09-29 | ||
| FR9912143A FR2798967B1 (fr) | 1999-09-29 | 1999-09-29 | Capsulisme pour machine tournante vehiculant un fluide gazeux et pouvant fonctionner en compresseur ou en pompe a vide |
| PCT/FR2000/002669 WO2001023761A1 (fr) | 1999-09-29 | 2000-09-27 | Compresseur ou en pompe a vide a spirales |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1216358A1 true EP1216358A1 (fr) | 2002-06-26 |
| EP1216358B1 EP1216358B1 (fr) | 2004-03-10 |
Family
ID=9550370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00966206A Expired - Lifetime EP1216358B1 (fr) | 1999-09-29 | 2000-09-27 | Compresseur ou pompe a vide a spirales |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1216358B1 (fr) |
| AT (1) | ATE261547T1 (fr) |
| AU (1) | AU7667700A (fr) |
| DE (1) | DE60008896D1 (fr) |
| FR (1) | FR2798967B1 (fr) |
| WO (1) | WO2001023761A1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2674515A1 (fr) | 2012-06-11 | 2013-12-18 | Siemens Aktiengesellschaft | Régulation de la température d'un électrolyseur à haute température |
| WO2013185994A1 (fr) | 2012-06-11 | 2013-12-19 | Siemens Aktiengesellschaft | Système de régulation de température pour batterie ou électrolyseur à haute température |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1378065A (en) * | 1920-08-31 | 1921-05-17 | Varley Cromwell Hanford | Rotary engine or pump |
| US1967957A (en) * | 1933-05-01 | 1934-07-24 | Nat Electrical Supply Company | Vacuum pump |
| FR825643A (fr) * | 1936-11-26 | 1938-03-09 | Perfectionnements au capsulisme à excentrique | |
| JPS5990789A (ja) * | 1982-11-16 | 1984-05-25 | Nippon Soken Inc | スクロ−ル型ポンプ |
| US4606711A (en) * | 1983-01-10 | 1986-08-19 | Nippon Soken, Inc. | Fluid pump with eccentrically driven C-shaped pumping member |
| JPS59141786A (ja) * | 1983-02-02 | 1984-08-14 | Nippon Soken Inc | リング型ポンプ |
| JPH0235159B2 (ja) * | 1983-02-09 | 1990-08-08 | Nippon Jidosha Buhin Sogo Kenkyusho Kk | Ringugatahonpu |
| DE4215038A1 (de) * | 1992-05-07 | 1993-11-11 | Bitzer Kuehlmaschinenbau Gmbh | Spiralverdichter für kompressible Medien |
| US5318424A (en) * | 1992-12-07 | 1994-06-07 | Carrier Corporation | Minimum diameter scroll component |
| JPH06323277A (ja) * | 1993-05-12 | 1994-11-22 | Mitsubishi Heavy Ind Ltd | スクロール流体機械 |
| JPH07317667A (ja) * | 1994-05-26 | 1995-12-05 | Sanden Corp | スクロール型コンプレッサ |
| DE29603280U1 (de) * | 1996-02-23 | 1996-04-11 | Walter, Jürgen, 07318 Saalfeld | Maschine zur Aufladung von Verbrennungsmotoren |
| DE19614477A1 (de) * | 1996-04-12 | 1997-10-16 | Juergen Walter | Drehkolbenmaschine |
-
1999
- 1999-09-29 FR FR9912143A patent/FR2798967B1/fr not_active Expired - Fee Related
-
2000
- 2000-09-27 AU AU76677/00A patent/AU7667700A/en not_active Abandoned
- 2000-09-27 WO PCT/FR2000/002669 patent/WO2001023761A1/fr not_active Ceased
- 2000-09-27 AT AT00966206T patent/ATE261547T1/de not_active IP Right Cessation
- 2000-09-27 EP EP00966206A patent/EP1216358B1/fr not_active Expired - Lifetime
- 2000-09-27 DE DE60008896T patent/DE60008896D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0123761A1 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2674515A1 (fr) | 2012-06-11 | 2013-12-18 | Siemens Aktiengesellschaft | Régulation de la température d'un électrolyseur à haute température |
| WO2013185994A1 (fr) | 2012-06-11 | 2013-12-19 | Siemens Aktiengesellschaft | Système de régulation de température pour batterie ou électrolyseur à haute température |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE261547T1 (de) | 2004-03-15 |
| WO2001023761A1 (fr) | 2001-04-05 |
| EP1216358B1 (fr) | 2004-03-10 |
| AU7667700A (en) | 2001-04-30 |
| FR2798967A1 (fr) | 2001-03-30 |
| DE60008896D1 (de) | 2004-04-15 |
| FR2798967B1 (fr) | 2001-11-23 |
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