EP0634576B1 - Transmission avec palier tournant et joint d'étanchéité utilisée - Google Patents
Transmission avec palier tournant et joint d'étanchéité utilisée Download PDFInfo
- Publication number
- EP0634576B1 EP0634576B1 EP19940201679 EP94201679A EP0634576B1 EP 0634576 B1 EP0634576 B1 EP 0634576B1 EP 19940201679 EP19940201679 EP 19940201679 EP 94201679 A EP94201679 A EP 94201679A EP 0634576 B1 EP0634576 B1 EP 0634576B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bearing house
- revolving
- seal
- opposite
- bearing
- 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 - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 title claims description 28
- 238000007789 sealing Methods 0.000 claims description 11
- 238000005461 lubrication Methods 0.000 description 4
- 239000004519 grease Substances 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Images
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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
- F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
- F04C29/0057—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions for eccentric movement
-
- 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
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/008—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
Definitions
- the invention concerns a transmission with revolving bearing containing a main shaft, a main bearing house in which said main shaft is supported on bearings, a secondary shaft connected to the main shaft and revolving around the geometrical axis of the main shaft, whose geometrical axis is parallel to but eccentrically in relation to the geometrical axis of the main shaft, and a revolving bearing house in which the secondary shaft revolving together with the bearing house is supported on the revolving bearing in a revolving manner according to its geometrical axis.
- Such transmissions are used among others to drive a scroll compressor.
- the fixed scroll is fixed in relation to the stationary main bearing house, whereas the moveable scroll working in conjunction with it is fixed in relation to the revolving bearing house.
- a scroll compressor comprising a transmission of the above kind is disclosed in DE-A-4.100.328.
- the bearings of the transmission are greased and sealed separately.
- the scroll compressors can work with a greater capacity and a greater output, the centrifugal load on the revolving bearing largely increases.
- the invention aims to remedy this disadvantage and to provide a transmission with revolving bearing whereby oil lubrication can be applied and subsequently a very good lubrication and a very high speed can be obtained.
- the transmission contains a seal which is situated between the inside of the main bearing house and the outside of the revolving bearing house, seals the opening between these bearing houses and is fixed in relation to the whole consisting of the main shaft and the secondary shaft.
- the seal contains a ring which is fixed on a radially protruding part which extends into or opposite the opening between the inside of the main bearing house and the outside of the revolving bearing house and which stands on the whole consisting of the main shaft and the secondary shaft.
- screw thread is provided on one of the sides formed by the inside of the main bearing house opposite the seal and the opposite outside of the seal.
- the screw thread is provided on one of the sides formed by the outside of the revolving bearing house opposite the seal and the opposite inside of the seal.
- the invention also concerns the seal as such from the transmission according to any of the previous embodiments.
- Figure 1 shows a coil compressor which mainly consists of a two-part housing 1 with a fixed scroll 2, an element 3 revolving in this housing with the moveable scroll 4 which works in conjunction with the above-mentioned fixed scroll 2, and a drive for this moveable element 3, consisting of an engine which is not represented in the figures and a transmission 5 according to the invention.
- the housing 1 turns into a main bearing house 6 on one side which is part of the transmission 5.
- On a flat part of the inside of the opposite side of the housing 1 stands the fixed scroll 2.
- the revolving element 3 is situated between the above-mentioned flat part and the main bearing house 6 and provided on the flat side diverted from the main bearing house 6 with a scroll 4 which works in conjunction with a scroll 2.
- This moveable element 3 makes a circular movement around a geometrical axis 7 inside the housing 1.
- Said element 3 is hereby lead by among others three crankshafts 8 of which one shaft part in the element 3 and the other shaft part in the housing 1, next to the main bearing house 6, is supported on bearings.
- the housing 1 is provided next to the scroll 2 with an entrance 9 for the air to be compressed and provided in the middle of the scroll 2 with an exit 10 for the compressed air.
- the transmission 5 which causes the circular movement of the element 3 contains a main shaft 11 which is supported on two ball bearings 12 in the main bearing house 6.
- the geometrical axis of the main shaft 11 coincides with the above-mentioned geometrical axis 7.
- a secondary shaft 13 whose geometrical axis 14 is parallel to but situated at a short distance from the above-mentioned geometrical axis 7.
- the revolving element 3 can rotate around the geometrical axis 14 and is mounted on the secondary shaft 13 by means of a revolving bearing 15 and is provided to this end on the side of the transmission 5 with a collar which forms the revolving bearing house 16 around the bearing 15.
- the opening between the outside of the moving bearing house 16 and the inside of the main bearing house 6 is sealed by means of a seal consisting of a ring 17 whose circumference, as represented in figure 2, has a changing width.
- This ring 17 is fixed by means of three protruding bolts 18 on a radially extending part 19 of the main shaft 11 which extends radially to up against the main bearing house 6.
- the ring 17 is, both on its outer edge which is situated opposite the inside of the main bearing house 6 and on its inner edge which is situated opposite the outside of the moving bearing house 16, provided with screw thread 20, as represented in detail in figure 3.
- This screw thread 20 is directed such that oil flowing from the main bearing house 6 in the direction of the element 3 is automatically returned.
- the secondary shaft 13 carries out a circular movement around the axis 7.
- the revolving element 3 which is prevented among others by the crankshafts 8 from rotating on itself, carries out a circular movement in the housing 1 around the axis 7.
- the inner edge of the ring 17 also carries out a circular movement around the axis 7 and simultaneously turns around the geometrical axis 14 and thus also around the moving bearing house 16 which carries out the same circular movement as the inner edge of the ring 17.
- the inner edge of the ring 17 only makes a rotating movement in relation to the outside of the bearing house 16 around the centre of this bearing house 16.
- the ball bearings 12 and especially the revolving bearing 15 are lubricated by means of oil which is situated in the main bearing house 6. Thanks to the ring 17, the oil cannot leave the main bearing house 6 at the side of the revolving element 3.
- the embodiment of the transmission 5 to which the figures 4 and 5 are related merely differs from the above-described embodiment in that the seal formed by the ring 17 is provided with screw thread 20 only on the inside of the ring opening, i.e. on the side directed towards the main bearing house 16, and in that the outer screw thread 20 is not provided in the outside of the ring 17 but opposite said outside, in the inside of the main bearing house 6 or more in particular in an insert ring 21 which is cased in the inside of the main bearing house 6 in a fixed way.
- the embodiments according to the figures 6 to 8 differ from the above-described embodiments in that the seal, apart from an actual ring 22, has at least one sealing lip 23, for example made of synthetic material.
- the ring 22 coincides with the ring 17 and is fixed in a similar manner by means of bolts 18 on the part 19 of the main shaft 11.
- both on the outer circumference and on the inner circumference of the ring 22 is provided a sealing lip 23 which is cased in the ring 22.
- the two sealing lips 23 are connected elastically against the inside of the main bearing house 6 and the outside of the moving bearing house 16 respectively.
- only one sealing lip 23 is fixed on the ring 22, for example on the inner circumference, whereas the second sealing lip 23 is connected onto the ring 22 and is cased in a ring 24 which is fixed on a bearing house, for example the main bearing house 6.
- one of the sealing lips 23, for example that on the outside, is replaced by screw thread 20 on the circumference of the ring 22 or on the opposite side of a bearing house 6 or 16.
- the seal formed by the ring 22 and one or two sealing lips 23 prevents the oil from leaving the main bearing house 6.
- the transmission should not necessarily be designed to drive a scroll compressor.
- the invention is applicable in any case where the opening between a first bearing house surrounding a shaft and a second bearing house surrounding a bearing revolving eccentrically in relation to the above-described shaft needs to be sealed.
- this screw thread can be provided on the outside of the revolving bearing house instead of on the inside of the ring.
- screw thread is provided in the main bearing house or in the revolving bearing house, said screw thread does not necessarily need to be provided in an insert ring. It might also be provided directly in the wall of the bearing house.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Motor Power Transmission Devices (AREA)
- Component Parts Of Construction Machinery (AREA)
- Rotary Pumps (AREA)
Claims (10)
- Transmission à palier rotatif (15) contenant un arbre principal (11), un logement de palier principal (6) dans lequel ledit arbre principal (11) est supporté sur des coussinets (12), un arbre secondaire (13) relié à l'arbre principal (11) et effectuant des rotations autour de l'axe géométrique (7) de l'arbre principal (11), dont l'axe géométrique (14) est parallèle à, mais en excentricité par rapport à l'axe géométrique (7) de l'arbre principal (11), ainsi qu'un logement de palier rotatif (16) dans lequel l'arbre secondaire (13) effectuant des rotations conjointement avec le logement de palier (16) est supporté sur le palier rotatif (15) de façon à effectuer des rotations autour de son axe géométrique, caractérisée en ce que la transmission contient un joint étanche (17; 22, 23) qui est situé entre le côté interne du logement de palier principal (6) et le côté externe du logement de palier rotatif (16), procure une étanchéité à l'ouverture entre ces logements de paliers (6 et 16) et est fixe par rapport à l'ensemble constitué par l'arbre principal (11) et par l'arbre secondaire (12).
- Transmission selon la revendication ci-dessus, caractérisée en ce que le joint étanche (17; 22, 23) contient un anneau (17, 22) qui est fixé sur une partie (19) faisant saillie en direction radiale, qui s'étend dans ou qui est opposée à l'ouverture entre le côté interne du logement de palier principal (6) et le côté externe du logement de palier rotatif (16), et qui s'appuie sur l'ensemble constitué par l'arbre principal (11) et par l'arbre secondaire (13).
- Transmission selon l'une quelconque des revendications ci-dessus, caractérisée en ce qu'on prévoit un filet de vis (20) sur un des côtés formés par le côté interne du logement de palier principal (6) opposé au joint étanche (17; 22, 23) et par le côté externe opposé du joint étanche (17; 22, 23).
- Transmission selon l'une quelconque des revendications ci-dessus, caractérisée en ce qu'on prévoit un filet de vis (20) sur un des côtés formés par le côté externe du logement de palier rotatif (16) opposé au joint étanche (17; 22, 23) et par le côté interne opposé du joint étanche (17).
- Transmission selon les revendications 3 et 4, caractérisée en ce que le joint étanche (17) est muni d'un filet de vis (20) à la fois sur le côté interne opposé au logement de palier rotatif (16) et sur le côté externe opposé au logement de palier principal (6).
- Transmission selon l'une quelconque des revendications 3 et 4, caractérisée en ce que le logement de palier (6, 16) est muni d'un filet de vis (20) opposé au joint étanche (17; 22, 23).
- Transmission selon la revendication ci-dessus, caractérisée en ce que le filet de vis (20) est prévu dans un logement de palier (6, 16) dans une pièce rapportée annulaire (21) qui est encastrée sur le côté du joint étanche (17; 22, 23) dans le logement de palier.
- Transmission selon la revendication 2, caractérisée en ce que le joint étanche (22, 23) contient une lèvre d'étanchéification (23) qui est prévue sur un des côtés formés par le côté interne du logement de palier principal (6) opposé à l'anneau (22) et par le côté externe opposé de l'anneau (22).
- Transmission selon l'une quelconque des revendications 2 et 8, caractérisée en ce que le joint étanche (22, 23) contient une lèvre d'étanchéification (23) qui est prévue sur un des côtés formés par le côté externe du logement de palier rotatif (16) opposé à l'anneau (22) et par le côté interne opposé de l'anneau (22).
- Joint étanche pour conférer une étanchéité à l'ouverture entre un logement de palier principal (6) dans lequel un arbre principal (11) est supporté sur des coussinets (12) et un logement de palier mobile (16) se déplaçant à l'intérieur dudit logement de palier principal en suivant une trajectoire circulaire, dans lequel un arbre secondaire (13) est supporté par un palier (15), caractérisé en ce qu'il contient un anneau (17, 22) dont la largeur augmente depuis un minimum à un endroit jusqu'à un maximum à un endroit diamétralement opposé.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE9300739 | 1993-07-14 | ||
BE9300739 | 1993-07-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0634576A1 EP0634576A1 (fr) | 1995-01-18 |
EP0634576B1 true EP0634576B1 (fr) | 1997-09-10 |
Family
ID=3887192
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19940201679 Expired - Lifetime EP0634576B1 (fr) | 1993-07-14 | 1994-06-11 | Transmission avec palier tournant et joint d'étanchéité utilisée |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0634576B1 (fr) |
DE (1) | DE69405490T2 (fr) |
ES (1) | ES2109592T3 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2920207B1 (fr) * | 2007-08-23 | 2009-10-09 | Alcatel Lucent Sas | Pompe a vide de type seche comportant un dispositif d'etancheite aux fluides lubrifiants et elements centrifugeur equipant un tel dispositif |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06103069B2 (ja) * | 1986-02-15 | 1994-12-14 | エヌオーケー株式会社 | オイルシールの製造方法 |
JPS6429685A (en) * | 1987-07-23 | 1989-01-31 | Mitsubishi Electric Corp | Scroll compressor |
SU1576724A1 (ru) * | 1988-04-18 | 1990-07-07 | Ленинградский технологический институт холодильной промышленности | Вертикальна спиральна машина |
US4938669A (en) * | 1989-01-23 | 1990-07-03 | Carrier Corporation | Scroll compressor with axial compliancy |
JPH02275084A (ja) * | 1989-04-13 | 1990-11-09 | Mitsubishi Electric Corp | スクロール真空ポンプ |
US5120205A (en) * | 1990-01-11 | 1992-06-09 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Scroll type compressor with improved bearing arrangement for drive shaft |
DE4211809A1 (de) * | 1992-04-08 | 1993-10-14 | Klein Schanzlin & Becker Ag | Schwimmringdichtung |
-
1994
- 1994-06-11 ES ES94201679T patent/ES2109592T3/es not_active Expired - Fee Related
- 1994-06-11 EP EP19940201679 patent/EP0634576B1/fr not_active Expired - Lifetime
- 1994-06-11 DE DE1994605490 patent/DE69405490T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE69405490T2 (de) | 1998-02-19 |
DE69405490D1 (de) | 1997-10-16 |
ES2109592T3 (es) | 1998-01-16 |
EP0634576A1 (fr) | 1995-01-18 |
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