EP1917441B1 - Pump housing - Google Patents
Pump housing Download PDFInfo
- Publication number
- EP1917441B1 EP1917441B1 EP05787010.7A EP05787010A EP1917441B1 EP 1917441 B1 EP1917441 B1 EP 1917441B1 EP 05787010 A EP05787010 A EP 05787010A EP 1917441 B1 EP1917441 B1 EP 1917441B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sub
- assembly
- face
- pump body
- wall
- 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.)
- Active
Links
- 230000006835 compression Effects 0.000 claims description 30
- 238000007906 compression Methods 0.000 claims description 30
- 239000012530 fluid Substances 0.000 claims description 29
- 238000000429 assembly Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 9
- 230000000295 complement effect Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000005489 elastic deformation Effects 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 238000010790 dilution Methods 0.000 claims description 2
- 239000012895 dilution Substances 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 description 7
- 208000031968 Cadaver Diseases 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000003754 machining Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 241001080024 Telles Species 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013529 heat transfer fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000003068 static effect Effects 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
- F04C2/086—Carter
-
- 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
-
- 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
- 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
- F04C18/086—Carter
-
- 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
- F04C2230/00—Manufacture
- F04C2230/20—Manufacture essentially without removing material
- F04C2230/21—Manufacture essentially without removing material by casting
-
- 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
- F04C2230/00—Manufacture
- F04C2230/60—Assembly methods
-
- 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
- F04C2240/00—Components
- F04C2240/30—Casings or housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2251/00—Material properties
- F05C2251/04—Thermal properties
- F05C2251/042—Expansivity
- F05C2251/044—Expansivity similar
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2251/00—Material properties
- F05C2251/04—Thermal properties
- F05C2251/042—Expansivity
- F05C2251/046—Expansivity dissimilar
Definitions
- the invention relates to a pump body.
- the invention more particularly but not exclusively concerns the field of pumps which, using rotors, are used as compressors for gaseous fluids.
- the invention obviously relates to the pump which comprises this body.
- the pump body is constituted in two subsets, said first and second, which are assembled in a substantially orthogonal joint plane to the longitudinal axes of the rotors.
- the rotors are guided in rotation along their longitudinal axes by so-called first guiding members positioned at opposite ends that they comprise,
- the bodies of such pumps are made by molding walls of metallic material and some surfaces of these walls are machined, particularly by boring, to define a so-called compression chamber, in which the rotors will then be placed.
- the construction in two sub-assemblies half whose longitudinal dimension substantially corresponds to the half-length of the pump body is preferred because it facilitates the molding of the metal material.
- each chamber portion included in a subassembly also makes it possible to guarantee increased machining precision.
- the pump body must have a double-walled envelope that allows the circulation of a coolant around the compression chamber.
- the double-walled casing has, on the one hand, a first wall which determines the volume of the compression chamber and, on the other hand, a second wall which extends around the first wall with a certain spacing for the circulation of the first fluid.
- One result that the invention aims to obtain is a double-walled pump body whose structure makes it possible to overcome the problems conventionally encountered, both during manufacture and during operation of the pump.
- the subject of the invention is a pump body according to claim 1.
- the invention also relates to a pump which comprises this body.
- a pump body 2 having a double-walled casing 3 which allows the circulation of a first fluid 4, in particular a heat-transfer fluid, at least partially around a compression chamber 5 of a second fluid 6 , the compression being effected by means of at least two elongated rotors 7, 8, which, having longitudinal axes 70, 80, are situated in said compression chamber 5.
- the first fluid 4 and the second fluid 6 are symbolized by arrows.
- the rotors 7, 8 are guided in rotation about their longitudinal axes 70, 80 by so-called first rotating guide members 9 positioned at opposite ends 71, 72, 81, 82 that these rotors comprise.
- the double-walled envelope 3 has, on the one hand, a first wall 10 which determines the volume of the compression chamber 5 and, on the other hand, a second wall 11 which extends around the first wall 10 with a certain spacing 12 intended for the circulation of the first fluid 4.
- the pump body 2 consists of two subassemblies 13, 14, said first 13 and second 14, which are assembled in a joint plane 15 substantially orthogonal to the longitudinal axes 70, 80 of the rotors 7, 8.
- a pump body 2 comprising a first and a second subassembly 13, 14 which are adapted to include many common features, or even to be identical.
- the first wall 10 is associated with the rigid element 16 which carries it by a connecting portion 24 which allows a displacement of said first wall 10 in a first direction substantially orthogonal to the joint plane 15, by elastic deformation of said connecting portion 24.
- the connecting portion 24 is constituted by a zone of the rigid element 16 which borders the first wall 10.
- this zone is constituted by a thinned portion of the rigid element 16.
- this thinned area extends in a first plane 26 substantially parallel to the joint plane 15.
- Each cutout 23 set back from the first face 18 also constitutes a housing for a second member 27 intended to sealing between each of the opposite ends 71, 72, 81, 82 of an elongated rotor 7, 8 and the rigid element 16 in which the cut 23 is located.
- the second member 27 provides a seal called “dynamic”, that is to say an effective seal during rotation of the rotors.
- each cutout 23 consists of a bore which comprises a first bearing surface 231 for a first rotational guiding member 9 of an end 71, 72, 81, 82 of rotor 7, 8 and a second bearing 232 for a second member 27 intended to seal between an end 71, 72, 81, 82 of the rotor 7, 8 and the rigid element 16 at which this end is located.
- each rotor 7, 8 is rotated and the rotations of the different rotors 7, 8 are synchronized.
- one of the subassemblies 13, 14 constituting the pump body 2 is associated with a housing 17 and a cover 28.
- the housing 17 or the cover 28 which houses a mechanism for synchronously rotating the different rotors 7, 8 housed in the pump body 2.
- At least one of said first subassembly 13 and second subassembly 14 is equipped with bores which pass right through the rigid element they comprise and the rotors have their ends which pass through said bores so as to extend beyond the second face of the rigid element considered.
- Means for driving rotors 7, 8 in synchronized rotation can be associated with the ends which pass through said bores so as to extend beyond the second face of the rigid element in question.
- first subassembly 13 and the second subassembly 14 are equipped with bores which pass right through the rigid element 16 which they comprise and the second face 19 of the rigid element 16 of one of said first and second subassemblies 13, 14 carries at least one cover 28 which sealingly closes said bores.
- the first subassembly 13 and the second subassembly 14 constituting the pump body 2 are assembled by means of third members 29 which urge them towards one another so as to closely apply the one against the other to the other.
- the third members 29 are supported on spans (not shown) which, reserved in the rigid element 16, are set back from said second face 19.
- the sixth faces 31 are spaced apart by a value "E" of between a few hundredths of a millimeter and a few tenths of a millimeter.
- At least one of the fifth faces 22 of the first subassembly 13 and the second subassembly 14 comprises a groove 34 receiving a first seal 35 which cooperates with the other fifth face 22.
- At least one first gasket 35 and the expression “at least one second gasket 36” mean that at least one sealing member is used and / or that the action of each gasket member sealing may be supplemented or reinforced by the use of a sealing material reported by, for example, by coating.
- the first seal 35 and the second seal 36 provide a static seal, that is to say a seal between fifth faces that are immobile relative to each other, or sixth faces that are immobile one. compared to each other.
- first seal and the second seal have the appearance of a toric seal, but these are possible solutions for making each of said seals.
- the first seal 35 and the second seal 36 may also consist of flat seals or be constituted by means of a bead of material deposited on the faces to be assembled.
- the assembly surfaces constituted by the fifth face 22 of two first and second subassemblies intended to be assembled have complementary male 37, female 38, transverse positioning elements, so as to allow the relative transverse positioning of the first and second subassemblies. .
- the fifth faces 22 are planar and the complementary positioning elements comprise pins 37 engaged in bores 38 made in each assembly surface formed by a fifth face 22.
- the assembly surface constituted by the fifth face 22 of each first or second subassembly 13, 14 has two complementary transverse positioning members male 37 and female 38 which are located in said third plane 39.
- first and second subassemblies 13, 14 that it comprises are constituted in such a way that the joint plane 15 is situated between one-quarter and three-quarters of the distance that separates the first faces 18 facing each other. to said first and second subsets 13, 14 assembled.
- the first and second subassemblies 13, 14 that they comprise are constituted in such a way that the plane of joint 15 is situated substantially at half the distance that separates the first faces 18 opposite said first and second assembled subassemblies 13, 14.
- the pump body 2 has at least a first channel 40 which allows the injection into the chamber of a third fluid 41, said dilution fluid, and from the outside of the compression chamber, at least this first channel 40 for conveying the third fluid 41 introduced by an inlet located in the rigid element 16 and expelled into the compression chamber 5 by at least one outlet orifice 42 located at the third face 20, is arranged in the thickness of said first wall 10.
- the third fluid 41 is symbolized by arrows that come from outlets 42.
- each first and second subassemblies 13, 14 is formed by overmolding.
- the second wall 11 of each first and second subassemblies 13, 14 is formed by overmolding a second identical material to the first material constituting the first wall 10.
- the second wall 11 of each first and second subassembly 13, 14 is formed by overmolding a second material distinct from the first material constituting the first wall 10.
- the rigid element 16 of each first and second subassemblies 13, 14 comprises a second channel 46 which opens into the first face 18 through an opening which, constituting one of said first orifice 44 or second orifice 45 is provided with a plane of symmetry 47 which is, on the one hand, situated midway between the longitudinal axes 70, 80 of the elongated rotors 7, 8 and, on the other hand, perpendicular to the third plane 39 which contains the longitudinal axes 70, 80 of said rotors 7, 8.
- the second channel 46 is determined by transverse sections which each have a plane of symmetry 47 which is, on the one hand, located halfway between the longitudinal axes 70, 80 of the elongate rotors 7, 8 and, on the other hand perpendicular to the third plane 39 which contains the longitudinal axes 70, 80 of said rotors 7, 8.
- the hot fluid discharged from the compression chamber 5 brings the same amount of heat on either side of the plane of symmetry 47.
- Each first and second subassembly 13, 14 that it comprises has a plane of symmetry 47 which is, on the one hand, located halfway between the longitudinal axes 70, 80 of the elongated rotors 7 8 and, on the other hand perpendicular to the third plane 39 which contains the longitudinal axes 70, 80 of said rotors 7, 8.
- At least the second exhaust port 45 of said second fluid 6 is shaped and disposed in the subassembly which includes it so as to allow the evacuation by gravity of condensates (not shown) located in the lower part. of the compression chamber 5.
Description
L'invention se rapporte à un corps de pompe.The invention relates to a pump body.
L'invention intéresse plus particulièrement mais non exclusivement le domaine des pompes qui, mettant en oeuvre des rotors, sont utilisées en tant que compresseurs pour des fluides gazeux.The invention more particularly but not exclusively concerns the field of pumps which, using rotors, are used as compressors for gaseous fluids.
L'invention se rapporte évidemment à la pompe qui comprend ce corps.The invention obviously relates to the pump which comprises this body.
Dans une des formes de réalisation les plus simples
Dans le corps de pompe, les rotors sont guidés en rotation selon leurs axes longitudinaux par des organes, dits premiers, de guidage positionnés au niveau d'extrémités opposées qu'ils comportent,In the pump body, the rotors are guided in rotation along their longitudinal axes by so-called first guiding members positioned at opposite ends that they comprise,
De manière générale, les corps de telles pompes sont réalisés par moulage de parois en matériau métallique et certaines surfaces de ces parois sont travaillées par usinage, notamment par alésage, pour définir une chambre, dite de compression, dans laquelle les rotors seront ensuite placés.In general, the bodies of such pumps are made by molding walls of metallic material and some surfaces of these walls are machined, particularly by boring, to define a so-called compression chamber, in which the rotors will then be placed.
La fabrication desdits sous ensembles par moulage de matériau métallique est grandement facilitée lorsque le rapport entre la dimension longitudinale et la dimension transversale (épaisseur) de chacune des parois qui les définissent est proche de l'unité.The manufacture of said subassemblies by molding of metallic material is greatly facilitated when the ratio between the longitudinal dimension and the transverse dimension (thickness) of each of the walls that defines them is close to unity.
Bien que non obligatoire, la construction en deux demis sous ensembles dont la dimension longitudinale correspond sensiblement à la demie dimension longitudinale du corps de pompe est préférée car elle permet de faciliter le moulage du matériau métallique.Although not mandatory, the construction in two sub-assemblies half whose longitudinal dimension substantially corresponds to the half-length of the pump body is preferred because it facilitates the molding of the metal material.
En outre, la dimension longitudinale réduite de chaque partie de chambre comprise dans un sous ensemble permet également de garantir une précision d'usinage accrue.In addition, the reduced longitudinal dimension of each chamber portion included in a subassembly also makes it possible to guarantee increased machining precision.
La situation se complique lorsque la chambre de compression doit être refroidie par circulation d'un fluide caloporteur.The situation is complicated when the compression chamber must be cooled by circulation of a coolant.
En effet, le corps de pompe doit avoir une enveloppe à double paroi qui permet la circulation d'un fluide caloporteur autour de la chambre de compression.Indeed, the pump body must have a double-walled envelope that allows the circulation of a coolant around the compression chamber.
Dans ce type de pompe l'enveloppe à double paroi a, d'une part, une première paroi qui détermine le volume de la chambre de compression et, d'autre part, une seconde paroi qui s'étend autour de la première paroi avec un certain espacement destiné à la circulation du premier fluide.In this type of pump the double-walled casing has, on the one hand, a first wall which determines the volume of the compression chamber and, on the other hand, a second wall which extends around the first wall with a certain spacing for the circulation of the first fluid.
Avec ce type de structure, lors du fonctionnement de la pompe, on rencontre notamment des problèmes d'étanchéité qui sont engendrés par la dilatation différentielle de la première et de la seconde paroi.With this type of structure, during the operation of the pump, there are particular sealing problems that are caused by the differential expansion of the first and second wall.
Un résultat que l'invention vise à obtenir est un corps de pompe à double paroi dont la structure permet de surmonter les problèmes classiquement rencontrés, tant lors de la fabrication que lors du fonctionnement de la pompe.One result that the invention aims to obtain is a double-walled pump body whose structure makes it possible to overcome the problems conventionally encountered, both during manufacture and during operation of the pump.
A cet effet, l'invention a pour objet un corps de pompe conforme à la revendication 1.For this purpose, the subject of the invention is a pump body according to claim 1.
L'invention a également pour objet une pompe qui comprend ce corps.The invention also relates to a pump which comprises this body.
L'invention sera bien comprise à la lecture de la description ci-après en regard du dessin qui représente schématiquement :
-
figure 1 : une vue éclatée et en perspective d'un corps de pompe selon l'invention, -
figure 2 : une pompe comprenant le corps de pompe de lafigure 1 , vue en coupe selon un plan qui passe par les axes longitudinaux des rotors qu'elle comprend, -
figure 3 : une vue en bout d'un des sous ensembles constitutifs du corps de pompe selon l'invention, -
figure 4 : une vue en coupe transversale du sous ensemble de lafigure 3 , et ce, selon le plan médian, -
figure 5 : à plus grande échelle, une vue locale en coupe d'un détail d'assemblage de deux sous ensembles du corps de pompe.
-
figure 1 : an exploded perspective view of a pump body according to the invention, -
figure 2 : a pump comprising the pump body of thefigure 1 , seen in section along a plane which passes through the longitudinal axes of the rotors which it comprises, -
figure 3 : an end view of one of the constituent subassemblies of the pump body according to the invention, -
figure 4 : a cross-sectional view of the subset of thefigure 3 , and this, according to the median plane, -
figure 5 on a larger scale, a local sectional view of an assembly detail of two subassemblies of the pump body.
En se reportant au dessin on voit un corps de pompe 2 ayant une enveloppe 3 à double paroi qui permet la circulation d'un premier fluide 4, notamment caloporteur, au moins partiellement autour d'une chambre de compression 5 d'un second fluide 6, la compression étant effectuée au moyen d'au moins deux rotors allongés 7, 8, qui, présentant des axes longitudinaux 70, 80, sont situés dans ladite chambre de compression 5.Referring to the drawing we see a
Le premier fluide 4 ainsi que le second fluide 6 sont symbolisés par des flèches.The
Les rotors 7, 8 sont guidés en rotation autour de leurs axes longitudinaux 70, 80 par des organes, dits premiers, de guidage en rotation 9 positionnés au niveau d'extrémités opposées 71, 72, 81, 82 que ces rotors comportent.The
L'enveloppe 3 à double paroi a, d'une part, une première paroi 10 qui détermine le volume de la chambre de compression 5 et, d'autre part, une seconde paroi 11 qui s'étend autour de la première paroi 10 avec un certain espacement 12 destiné à la circulation du premier fluide 4.The double-walled envelope 3 has, on the one hand, a
Le corps de pompe 2 est constitué en deux sous ensembles 13, 14, dits premier 13 et second 14, qui sont assemblés selon un plan de joint 15 sensiblement orthogonal aux axes longitudinaux 70, 80 des rotors 7, 8.The
Tel que cela apparaît en
De manière notable, chaque premier sous ensemble 13 et second sous ensemble 14 comprend un élément rigide 16 qui, moulé en un premier matériau thermiquement conducteur, présente deux faces opposées, dont une première face 18 et une seconde face 19, avec,
- située au-delà de la
première face 18,- . d'une part, la
première paroi 10 qui, moulée avec cet élément rigide 16, s'étend sensiblement orthogonalement à laditepremière face 18 et est,- .. transversalement délimitée entre deux faces opposées dites troisième 20 et quatrième 21, la
troisième face 20 délimitant latéralement la chambre decompression 5, laquatrième face 21 constituant une surface d'échange avec lepremier fluide 4, - .. longitudinalement limitée par une
cinquième face 22 qui définit au moins une portée d'assemblage avec lacinquième face 22 d'un premier sousensemble 13 ou second sousensemble 14 avec lequel il doit être assemblé selon le plan dejoint 15, de manière à constituer un corps depompe 2,
- .. transversalement délimitée entre deux faces opposées dites troisième 20 et quatrième 21, la
- . d'autre part, la
seconde paroi 11 qui s'étend sensiblement orthogonalement à laditepremière face 18 et parallèlement à laquatrième face 21 de lapremière paroi 10, tout en étant dépourvue de liaison avec laditequatrième face 21,
- . d'une part, la
- situées en retrait par rapport à la
première face 18, desdécoupes 23 qui constituent chacune au moins un logement pour un premier organe de guidage enrotation 9 d'une des extrémités opposées 71, 72, 81, 82 d'un desrotors 7, 8.
- located beyond the
first face 18,- . on the one hand, the
first wall 10 which, molded with thisrigid element 16, extends substantially orthogonal to saidfirst face 18 and is,- .. transversely delimited between two opposite faces said third 20 and fourth 21, the
third face 20 laterally delimiting thecompression chamber 5, thefourth face 21 constituting an exchange surface with thefirst fluid 4, - .. longitudinally limited by a
fifth face 22 which defines at least one assembly surface with thefifth face 22 of afirst subassembly 13 orsecond subassembly 14 with which it must be assembled according to thejoint plane 15, so to constitute apump body 2,
- .. transversely delimited between two opposite faces said third 20 and fourth 21, the
- . on the other hand, the
second wall 11 which extends substantially orthogonally to saidfirst face 18 and parallel to thefourth face 21 of thefirst wall 10, while being devoid of any connection with saidfourth face 21,
- . on the one hand, the
- set back from the
first face 18,cutouts 23 which each constitute at least one housing for a first rotatingguide 9 of one of the 71, 72, 81, 82 of one of theopposite ends rotors 7, 8.
L'adoption de ces caractéristiques techniques permet de donner au corps de pompe 2 une structure qui simplifie radicalement la fabrication, à quelque niveau que ce soit, c'est-à-dire, notamment lorsque la fabrication comprend des étapes de moulage et d'usinage.The adoption of these technical characteristics makes it possible to give the pump body 2 a structure which radically simplifies the manufacture, at any level whatsoever, that is to say, especially when the manufacturing comprises molding steps and machining.
Tel que cela apparaîtra mieux plus après, l'adoption de ces particularités permet de construire un corps de pompe 2 comprenant un premier et un second sous ensemble 13, 14 qui sont adaptés pour comporter de nombreuses particularités communes, voire d'être identiques.As will become apparent later, the adoption of these features allows to build a
De manière également remarquable, sur au moins l'un desdits premier et second sous ensembles 13, 14, la première paroi 10 est associée à l'élément rigide 16 qui la porte par une partie de liaison 24 qui autorise un déplacement de ladite première paroi 10 dans une première direction 25 sensiblement orthogonale au plan de joint 15, et ce, par déformation élastique de ladite partie de liaison 24.Also remarkably, on at least one of said first and
Dans une forme préférée de réalisation, la partie de liaison 24 est constituée par une zone de l'élément rigide 16 qui borde la première paroi 10.In a preferred embodiment, the connecting
Par exemple, cette zone est constituée par une partie amincie de l'élément rigide 16.For example, this zone is constituted by a thinned portion of the
Avantageusement, cette zone amincie s'étend dans un premier plan 26 sensiblement parallèle au plan de joint 15.Advantageously, this thinned area extends in a
L'adoption de ces particularités techniques permet que tout allongement ou raccourcissement de la première paroi 10 soit absorbé par déformation élastique de la partie de liaison 24.The adoption of these technical features allows that any elongation or shortening of the
Chaque découpe 23 située en retrait par rapport à la première face 18, constitue également un logement pour un second organe 27 destiné à assurer l'étanchéité entre chacune des extrémités opposées 71, 72, 81, 82 d'un rotor allongé 7, 8 et l'élément rigide 16 dans lequel se situe la découpe 23 considérée.Each
Le second organe 27 assure une étanchéité dite "dynamique", c'est-à-dire une étanchéité effective pendant la rotation des rotors.The
Tel que cela apparaît au dessin, chaque découpe 23 consiste en un alésage qui comprend une première portée 231 pour un premier organe de guidage en rotation 9 d'une extrémité 71, 72, 81, 82 de rotor 7, 8 et une seconde portée 232 pour un second organe 27 destiné à assurer l'étanchéité entre une extrémité 71, 72, 81, 82 du rotor 7, 8 et l'élément rigide 16 au niveau de laquelle cette extrémité se situe.As shown in the drawing, each
Bien que cela ne soit pas représenté, chaque rotor 7, 8 est entraîné en rotation et les rotations des différents rotors 7, 8 sont synchronisées.Although this is not shown, each
Tel que cela apparaît en
Bien que cela ne soit pas représenté, on considère que c'est le boîtier 17 ou le couvercle 28 qui abrite un mécanisme d'entraînement en rotation synchronisée des différents rotors 7, 8 abrités dans le corps de pompe 2.Although this is not shown, it is considered that it is the
Pour permettre l'entraînement des dits rotors 7, 8, au moins l'un desdits premier sous ensemble 13 et second sous ensemble 14 est équipé d'alésages qui traversent de part en part l'élément rigide qu'ils comprennent et les rotors ont leurs extrémités qui traversent les dits alésages de manière à s'étendre au-delà de la seconde face de l'élément rigide considéré.To allow the driving of said
Des moyens d'entraînement des rotors 7, 8 en rotation synchronisée peuvent être associés aux extrémités qui traversent les dits alésages de manière à s'étendre au-delà de la seconde face de l'élément rigide considéré.Means for driving
De préférence le premier sous ensemble 13 et le second sous ensemble 14 sont équipés d'alésages qui traversent de part en part l'élément rigide 16 qu'ils comprennent et la seconde face 19 de l'élément rigide 16 d'un desdits premier et second sous ensembles 13, 14 porte au moins un couvercle 28 qui ferme étanchement lesdits alésages.Preferably the
Le premier sous ensemble 13 et le second sous ensemble 14 constituant le corps de pompe 2 sont assemblés au moyen de troisièmes organes 29 qui les sollicitent l'un vers l'autre de manière à appliquer étroitement, l'une contre l'autre, les cinquièmes faces 22 des éléments rigides 16 de chaque premier sous ensemble 13 et second sous ensemble 14.The
L'adoption de ces caractéristiques techniques garantit la cohésion de l'assemblage du premier sous ensemble 13 et du second sous ensemble 14.The adoption of these technical characteristics guarantees the cohesion of the assembly of the
Dans un mode préféré de réalisation, le premier sous ensemble 13 et le second sous ensemble 14 constituant le corps de pompe 2 sont assemblés aux moyens de troisièmes organes 29 consistant en des tirants qui :
- s'étendent chacun dans une seconde
direction 30 sensiblement orthogonale au plan de joint 15 et dont au moins certains traversent l'espace situé entre la première paroi 10 et la seconde paroi 11 de chaquepremier sous ensemble 13 etsecond sous ensemble 14, - trouvent appui au niveau de la seconde face 19 de chaque élément rigide 16 que comprend l'un des dits premier et
13, 14.second sous ensembles
- each extend in a second direction substantially orthogonal to the
joint plane 15 and at least some of which pass through the space between thefirst wall 10 and thesecond wall 11 of eachfirst subassembly 13 andsecond subassembly 14, - are supported at the level of the
second face 19 of eachrigid element 16 that comprises one of said first and 13, 14.second subassemblies
L'expression "au niveau de la seconde face 19" ne doit être interprétée comme signifiant que les troisièmes organes 29 trouvent impérativement appui exactement dans le plan de la seconde face 19.The expression "at the level of the
Par exemple, les troisièmes organes 29 trouvent appui sur des portées (non représentées) qui, réservées dans l'élément rigide 16, sont situées en retrait par rapport à la dite seconde face 19.For example, the
L'adoption de ces caractéristiques techniques garantit également la cohésion de l'assemblage du premier sous ensemble 13 avec le second sous ensemble 14 en permettant d'appliquer les contraintes d'assemblage dans des zones massives desdits sous ensembles, et ce, dans des secondes directions 30 qui sont tangentes à la première paroi 10.The adoption of these technical characteristics also ensures the cohesion of the assembly of the
De manière notable :
- le
premier sous ensemble 13 et lesecond sous ensemble 14 constituant le corps de pompe 2 sont assemblés au moyen de troisièmes organes 29 qui sollicitent lesdits premier et 13, 14 l'un vers l'autre de manière à appliquer étroitement, l'une contre l'autre, les cinquièmes faces 22 des éléments rigides 16 de chaquesecond sous ensembles premier sous ensemble 13 etsecond sous ensemble 14, - la seconde paroi 11 de chaque
premier sous ensemble 13 etsecond sous ensemble 14 s'étend au-delà de la première face 18 et comprend une face qui, dite sixièmeface 31, s'étend dans unsecond plan 32 parallèle à la cinquièmeface 22 du même premier ou 13, 14, mais en retrait par rapport à cette cinquièmesecond sous ensemble face 22, de manière telle que lorsque les cinquièmes faces 22 dupremier sous ensemble 13 et dusecond sous ensemble 14 s'appuient l'une sur l'autre, les sixièmes faces 31 de ces sous 13, 14 sont écartées d'une valeur prédéterminée "E", de sorte qu'un interstice 33 subsiste entre elles.ensembles
- the
first subassembly 13 and thesecond subassembly 14 constituting thepump body 2 are assembled by means ofthird members 29 which urge said first and 13, 14 towards each other so as to apply closely, one against the other, the fifth faces 22 of thesecond subassemblies rigid elements 16 of eachfirst subassembly 13 and thesecond subassembly 14, - the
second wall 11 of eachfirst subassembly 13 andsecond subassembly 14 extends beyond thefirst face 18 and comprises a face which, saidsixth face 31 extends in asecond plane 32 parallel to thefifth face 22 of the same first or 13, 14, but recessed with respect to thissecond subassembly fifth face 22, so that when the fifth faces 22 of thefirst subassembly 13 and thesecond subassembly 14 are supported one on the other, the sixth faces 31 of these 13, 14 are spaced apart by a predetermined value "E", so that asubassemblies gap 33 remains between them.
L'adoption de ces particularités techniques garantit un parfait iso statisme de l'assemblage.The adoption of these technical features guarantees a perfect iso-static of the assembly.
De préférence les sixièmes faces 31 sont espacées d'une valeur "E" comprise entre quelques centièmes de millimètre et quelques dixièmes de millimètre.Preferably the sixth faces 31 are spaced apart by a value "E" of between a few hundredths of a millimeter and a few tenths of a millimeter.
Dans la limite de la valeur de l'écartement des sixièmes faces 31 (dilatation thermique), l'allongement des secondes parois 11 qui les portent ne peut pas affecter l'assemblage des cinquièmes faces 22.In the limit of the value of the spacing of the sixth faces 31 (thermal expansion), the elongation of the
D'une manière encore notable :
- au moins l'une des cinquièmes faces 22 du
premier sous ensemble 13 et dusecond sous ensemble 14 qui s'appuient l'une sur l'autre, porte au moins un premier joint 35 qui coopère avec l'autre cinquièmeface 22 et assure l'étanchéité périphérique de la chambre decompression 5 au niveau des deux cinquièmes faces 22 placées en appui l'une contre l'autre, - au moins l'une des sixièmes faces 31 du
premier sous ensemble 13 et dusecond sous ensemble 14 qui sont situées en vis-à-vis, s'appuient l'une sur l'autre par l'intermédiaire d'au moins un second joint 36 qui assure l'étanchéité périphérique de l'espace situé entre la première paroi 10 et la seconde paroi 11,malgré l'interstice 33 de valeur prédéterminée "E" qui subsiste entre ces sixièmes faces 31.
- at least one of the fifth faces 22 of the
first subassembly 13 and thesecond subassembly 14 which bear against one another carries at least onefirst seal 35 which cooperates with the otherfifth face 22 and ensures the peripheral sealing of thecompression chamber 5 at the twofifth faces 22 placed in abutment against each other, - at least one of the sixth faces 31 of the
first subassembly 13 and thesecond subassembly 14 which are located opposite each other, rest on one another via at least onesecond seal 36 which provides peripheral sealing of the space between thefirst wall 10 and thesecond wall 11, despite thegap 33 of predetermined value "E" which remains between these sixth faces 31.
Par exemple, au moins l'une des cinquièmes faces 22 du premier sous ensemble 13 et du second sous ensemble 14 comprend une gorge 34 recevant un premier joint 35 qui coopère avec l'autre cinquième face 22.For example, at least one of the fifth faces 22 of the
D'autres solutions techniques permettant de loger le premier joint existent et ne sont pas décrites car elles sont à la portée de l'homme de l'art.Other technical solutions for housing the first seal exist and are not described because they are within the reach of ordinary skill in the art.
L'expression "au moins un premier joint 35" et l'expression " au moins un second joint 36" signifient qu'on fait usage d'au moins un organe d'étanchéité et/ou que l'action de chaque organe d'étanchéité peut être complétée ou renforcée par l'usage d'un matériau d'étanchéité rapporté par, par exemple, par enduction.The expression "at least one
Le premier joint 35 et le second joint 36 assurent une étanchéité statique, c'est-à-dire une étanchéité entre des cinquièmes faces qui sont immobiles l'une par rapport à l'autre, ou des sixièmes faces qui sont immobiles l'une par rapport à l'autre.The
Sur le dessin, le premier joint et le second joint ont l'apparence de joint de type torique, mais il s'agit de possibles solutions pour réaliser chacun desdits joints.In the drawing, the first seal and the second seal have the appearance of a toric seal, but these are possible solutions for making each of said seals.
Le premier joint 35 et le second joint 36 peuvent aussi consister en des joints plats ou être constitués au moyen d'un cordon de matériau déposé sur les faces à assembler.The
L'adoption de ces caractéristiques techniques garantit l'étanchéité parfaite de la chambre de compression 5 et de l'espace dans lequel circule le premier fluide 4.The adoption of these technical characteristics guarantees perfect sealing of the
Les portées d'assemblage constituées par les cinquième face 22 de deux premier et second sous ensembles destinés à être assemblés présentent des éléments de positionnement transversal complémentaires male 37, femelle 38, de manière à autoriser le positionnement transversal relatif des deux premier et second sous ensembles.The assembly surfaces constituted by the
Dans un mode avantageux de réalisation, les cinquièmes faces 22 sont planes et les éléments de positionnement complémentaires comprennent des goupilles 37 engagées dans des alésages 38 réalisés dans chaque portée d'assemblage constituée par une cinquième face 22.In an advantageous embodiment, the fifth faces 22 are planar and the complementary positioning elements comprise
L'adoption de ces caractéristiques techniques garantit un positionnement rigoureux du premier et du second sous ensemble 13, 14 l'un par rapport à l'autre.The adoption of these technical characteristics ensures a rigorous positioning of the first and
Lorsque le corps de pompe 2 est destiné à recevoir aux moins deux rotors allongés 7, 8 dont les axes longitudinaux 70, 80 sont situés dans un même troisième plan 39, la portée d'assemblage constituée par la cinquième face 22 de chaque premier ou second sous ensemble 13, 14 présente deux éléments de positionnement transversal complémentaires male 37 et femelle 38 qui sont quant à eux situés dans ledit troisième plan 39.When the
De cette manière, le positionnement des deux sous ensembles 13, 14 du corps de pompe 2 n'est pas affecté par des micro-glissements induits par la succession des cycles de chauffe et refroidissement subis par la pompe.In this way, the positioning of the two
De manière générale, le premier et le second sous ensembles 13, 14 qu'il comprend sont constitués de manière telle que le plan de joint 15 est situé entre le quart et les trois quarts de la distance qui sépare les premières faces 18 en vis-à-vis desdits premier et second sous ensembles 13, 14 assemblés.In general terms, the first and
De manière préférentielle, les premier et second sous ensembles 13, 14 qu'ils comprend sont constitués de manière telle que le plan de joint 15 est situé sensiblement à la moitié de la distance qui sépare les premières faces 18 en vis-à-vis desdits premier et second sous ensembles assemblés 13, 14.Preferably, the first and
L'adoption de ces dernières particularités techniques permet par exemple de constituer le corps de pompe 2 au moyen d'un premier et d'un second sous ensemble 13, 14 qui sont identiques.The adoption of these latter technical features allows for example to constitute the
En tous cas, l'adoption de ces dernières particularités techniques simplifie l'usinage de la chambre de compression 5, mais également l'usinage des alésages qui constituent, d'une part, les premières portées 231 destinées à recevoir les premiers organes de guidage en rotation 9 des extrémités 71, 72, 81, 82 de rotors allongés 7, 8 et, d'autre part, les secondes portées 232 destinées à recevoir les seconds organes 27 assurant l'étanchéité entre les extrémités 71, 72, 81, 82 des rotors et l'élément rigide 16.In any case, the adoption of these latter technical features simplifies the machining of the
Lorsque le corps de pompe 2 a au moins un premier canal 40 qui permet l'injection dans la chambre d'un troisième fluide 41, dit fluide de dilution, et ce, depuis l'extérieur de la chambre de compression, au moins ce premier canal 40 destiné à acheminer le troisième fluide 41 introduit par une entrée située dans l'élément rigide 16 et expulsé dans la chambre de compression 5 par au moins un orifice de sortie 42 situé au niveau de la troisième face 20, est aménagé dans l'épaisseur de ladite première paroi 10.When the
Le troisième fluide 41 est symbolisé par des flèches qui sont issues d'orifices de sortie 42.The
L'adoption de ces caractéristiques techniques permet l'acheminement du troisième fluide 41 en tout endroit approprié de la chambre de compression 5.The adoption of these technical features allows the delivery of the
Dans une première forme de réalisation, la seconde paroi 11 de chaque premier et second sous ensemble 13, 14 est constituée par surmoulage.In a first embodiment, the
Selon une seconde forme de réalisation, la seconde paroi 11 de chaque premier et second sous ensemble 13, 14 est constituée par surmoulage d'un second matériau identique au premier matériau constituant la première paroi 10.According to a second embodiment, the
Suivant une troisième forme de réalisation, la seconde paroi 11 de chaque premier et second sous ensemble 13, 14 est constituée par surmoulage d'un second matériau distinct du premier matériau constituant la première paroi 10.According to a third embodiment, the
L'adoption de ces caractéristiques techniques permet de simplifier considérablement la fabrication du corps de pompe 2.The adoption of these technical features considerably simplifies the manufacture of the
Lorsque le corps de pompe 2 abrite deux rotors allongés 7, 8 disposés parallèlement dans une chambre de compression 5 comprenant un premier orifice d'admission 44 du second fluide 6 et un second orifice d'échappement 45 dudit second fluide 6, l'élément rigide 16 de chaque premier et second sous ensemble 13, 14 comprend un second canal 46 qui débouche dans la première face 18 par une ouverture qui, constituant l'un desdits premier orifice 44 ou second orifice 45 est dotée d'un plan de symétrie 47 qui est, d'une part, situé à mi-distance entre les axes longitudinaux 70, 80 des rotors allongés 7, 8 et d'autre part, perpendiculaire au troisième plan 39 qui contient les axes longitudinaux 70, 80 desdits rotors 7, 8.When the
Le second canal 46 est déterminé par des sections transversales qui ont chacune un plan de symétrie 47 qui est, d'une part, situé à mi-distance entre les axes longitudinaux 70, 80 des rotors allongés 7, 8 et, d'autre part, perpendiculaire au troisième plan 39 qui contient les axes longitudinaux 70, 80 desdits rotors 7, 8.The
L'adoption de ces caractéristiques techniques garantit une répartition de température symétrique dans chaque premier et second sous ensemble, particulièrement une répartition de température identique au niveau de premiers organes de guidage en rotation qui sont logés dans chaque premier et second sous ensemble.The adoption of these technical characteristics ensures a symmetrical temperature distribution in each first and second subassemblies, particularly an identical temperature distribution at first rotating guide members which are housed in each first and second subassemblies.
En effet, le fluide chaud évacué de la chambre de compression 5 apporte la même quantité de chaleur de part et d'autre du plan de symétrie 47.Indeed, the hot fluid discharged from the
Chaque premier et second sous ensemble 13, 14 qu'il comprend possède un plan de symétrie 47 qui est, d'une part, situé à mi-distance entre les axes longitudinaux 70, 80 des rotors allongés 7 8 et, d'autre part, perpendiculaire au troisième plan 39 qui contient les axes longitudinaux 70, 80 desdits rotors 7, 8.Each first and
L'adoption de ces caractéristiques techniques renforce l'uniformité de la répartition de température.The adoption of these technical characteristics reinforces the uniformity of the temperature distribution.
De manière avantageuse, au moins le second orifice d'échappement 45 dudit second fluide 6 est conformé et disposé dans le sous ensemble qui le comprend de manière à permettre l'évacuation par gravité d'éventuels condensats (non représentés) situés dans la partie inférieure de la chambre de compression 5.Advantageously, at least the second exhaust port 45 of said
Claims (16)
- A pump body (2) having a double-walled casing (3) which allows circulation of a first fluid (4), in particular a heat-exchanging fluid, at least partially around a compression chamber (5) for a second fluid (6), compression being carried out by means of at least two elongate rotors (7, 8) which, having longitudinal axes (70, 80), are situated in said compression chamber (5),. the rotors (7, 8) being guided in rotation about their longitudinal axes (70, 80) by rotational guide members (9), namely first rotational guide members, positioned at opposing ends (71, 72, 81, 82) which these rotors comprise,. the double-walled casing (3) having, on the one hand, a first wall (10) which determines the volume of the compression chamber (5) and, on the other hand, a second wall (11) which extends around the first wall (10) with a certain spacing (12) intended for circulation of the first fluid (4),. said pump body (2) consisting of two sub-assemblies (13, 14), namely first (13) and second (14) sub-assemblies, which are assembled along a joint plane (15) orthogonal to the longitudinal axes (70, 80) of the rotors (7, 8),each first sub-assembly (13) and second sub-assembly (14) being characterised in that it comprises a rigid element (16) which, moulded from a first thermally conductive material, has two opposing faces, namely a first face (18) and a second face (19), with,- situated beyond the first face (18),. on the one hand, the first wall (10) which, moulded together with this rigid element (16), extends substantially orthogonally to said first face (18) and is,.. transversely delimited between two opposing faces, namely third (20) and fourth (21) faces, the third face (20) laterally delimiting the compression chamber (5) and the fourth face (21) constituting an exchange surface with the first fluid (4),.. longitudinally limited by a fifth face (22) which defines at least one assembly surface with the fifth face (22) of a first sub-assembly (13) or second sub-assembly (14) with which it must be assembled along the joint plane (15), so as to make up a pump body (2),. on the other hand, the second wall (11) which extends substantially orthogonally to said first face (18) and parallel to the fourth face (21) of the first wall (10), while not being joined to said fourth face (21),- situated set back relative to the first face (18), cutouts (23) which each constitute at least one receptacle for a rotational guide member (9) of one of the opposing ends (71, 72, 81, 82) of one of the rotors (7, 8),the first sub-assembly (13) and the second sub-assembly (14) constituting the pump body (2) being assembled by means of tie rods (29) which stress them towards one another so as to apply tightly one against the other the fifth faces (22) of the rigid elements (16) of each first sub-assembly (13) and second sub-assembly (14),
said tie rods (29):- each extending in a second direction (30) substantially orthogonal to the joint plane (15) and certain at least of them passing through the space situated between the first wall (10) and the second wall (11) of each first sub-assembly (13) and second sub-assembly (14), and- coming to bear against the second face (19) of each rigid element (16) which one of said first and second sub-assemblies (13, 14) comprises. - A pump body (2) according to claim 1, characterised in that, on at least one of said first and second sub-assemblies (13, 14), the first wall (10) is linked to the rigid element (16) which bears it by a joining part (24) which allows displacement of said first wall (10) in a first direction (25) substantially orthogonal to the joint plane (15), this being achieved by elastic deformation of said joining part (24).
- A pump body (2) according to claim 1 or 2, characterised in that each cutout (23) situated set back relative to the first face (18) also constitutes a receptacle for a second member (27) intended to ensure tightness between each of the opposing ends (71, 72, 81, 82) of an elongate rotor (7, 8) and the rigid element (16) in which the cutout (23) in question is situated.
- A pump body (2) according to any one of claims 1 to 3, characterised in that:- the first sub-assembly (13) and the second sub-assembly (14) constituting the pump body (2) are assembled by means of third members (29) which stress said first and second sub-assemblies (13, 14) towards one another so as to apply tightly one against the other the fifth faces (22) of the rigid elements (16) of each first sub-assembly (13) and second sub-assembly (14),- the second wall (11) of each first sub-assembly (13) and second sub-assembly (14) extends beyond the first face (18) and comprises a face, namely a sixth face (31), which extends in a second plane (32) parallel to the fifth face (22) of the same first or second sub-assembly (13, 14), but set back relative to this fifth face (22) such that, when the fifth faces (22) of the first sub-assembly (13) and of the second sub-assembly (14) bear against one another, the sixth faces (31) of said sub-assemblies (13, 14) are separated by a predetermined value "E", such that there is a gap (33) between them.
- A pump body (2) according to claim 4, characterised in that:- at least one of the fifth faces (22) of the first sub-assembly (13) and of the second sub-assembly (14) which bear against one another bears at least one first gasket (35) which cooperates with the other fifth face (22) and ensures peripheral tightness of the compression chamber (5) at the two fifth faces (22) placed so as to bear against one another,- at least one of the sixth faces (31) of the first sub-assembly (13) and of the second sub-assembly (14) which are located facing one another bear against one another through the intermediary of at least one second gasket (36), which ensures peripheral tightness of the space situated between the first wall (10) and the second wall (11), despite the gap (33) of the predetermined value "E" which is present between these sixth faces (31).
- A pump body (2) according to any one of claims 1 to 5, characterised in that the assembly surfaces consisting of the fifth faces (22) of two first and second sub-assemblies (13, 14) intended to be assembled have complementary male (37) and female (38) transverse positioning elements, so as to allow relative transverse positioning of the two first and second sub-assemblies.
- A pump body (2) according to any one of claims 1 to 5 and intended to protect at least two elongate rotors (7, 8), the longitudinal axes (70, 80) of which are situated in one and the same third plane (39), characterised in that the assembly surface formed by the fifth face (22) of each first or second sub-assembly (13, 14) has two complementary male (37) and female (38) transverse positioning elements which are themselves situated in said third plane (39).
- A pump body (2) according to any one of claims 1 to 7, characterised in that the first and second sub-assemblies (13, 14) which it comprises are constituted such that the joint plane (15) is situated at between one quarter and three quarters of the distance which separates the first, opposing faces (18) of said first and second assembled sub-assemblies (13, 14).
- A pump body (2) according to any one of claims 1 to 8, characterised in that the first and second sub-assemblies (13, 14) which it comprises are constituted such that the joint plane (15) is situated at the halfway point of the distance which separates the first, opposing faces (18) of said first and second assembled sub-assemblies (13, 14).
- A pump body (2) according to any one of claims 1 to 9 and having at least one first duct (40) which allows injection into the chamber of a third fluid (41), namely a dilution fluid, from outside the chamber, this body being characterised in that at least one first duct (40), intended to convey the third fluid (41) introduced via an inlet located in the rigid element (16) and expelled into the compression chamber (5) via at least one outlet orifice (42) situated in the third face (20), is formed in the thickness of said first wall (10).
- A pump body (2) according to any one of claims 1 to 10, characterised in that the second wall (11) of each first and second subassembly (13, 14) is formed by overmoulding, in particular by overmoulding of a second material identical to the first material constituting the first wall (10) or by overmoulding of a second material different from the first material constituting the first wall (10).
- A pump body (2) according to any one of claims 1 to 11 and intended to protect two elongate rotors (7, 8) arranged parallel in the compression chamber (5), said compression chamber (5) comprising a first intake orifice (44) for the second fluid (6) and a second outlet orifice (45) for said second fluid (6), characterised in that the rigid element (16) of each first and second sub-assembly (13, 14) comprises a second duct (46) which opens into the first face (18) via an opening which, constituting one of said first orifice (44) or second orifice (45), is provided with a plane of symmetry (47) which is, on the one hand, situated halfway between the longitudinal axes (70, 80) of the elongate rotors (7, 8) and, on the other hand, perpendicular to the third plane (39), which contains the longitudinal axes (70, 80) of said rotors (7, 8).
- A pump body (2) according to claim 12, characterised in that the second duct (46) is determined by cross-sections which each have a plane of symmetry (47) which is, on the one hand, situated halfway between the longitudinal axes (70, 80) of the elongate rotors (7, 8) and, on the other hand, perpendicular to the third plane (39), which contains the longitudinal axes (70, 80) of said rotors (7, 8).
- A pump body (2) according to any one of claims 1 to 13, characterised in that each first and second sub-assembly (13, 14) which it comprises has a plane of symmetry (47) which is, on the one hand, situated halfway between the longitudinal axes (70, 80) of the elongate rotors (7, 8) and, on the other hand, perpendicular to the third plane (39), which contains the longitudinal axes (70, 80) of said rotors (7, 8).
- A pump body (2) according to any one of claims 1 to 14, characterised in that the second outlet orifice (45) for said second fluid (6) is shaped and arranged in the sub-assembly which comprises it in such a way as to allow gravity discharge of any condensates located in the lower part of the compression chamber (5).
- A pump comprising a pump body according to any one of claims 1 to 15.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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PL05787010.7T PL1917441T3 (en) | 2005-08-25 | 2005-08-25 | Pump housing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2005/054194 WO2007022798A1 (en) | 2005-08-25 | 2005-08-25 | Pump housing |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1917441A1 EP1917441A1 (en) | 2008-05-07 |
EP1917441B1 true EP1917441B1 (en) | 2016-07-13 |
Family
ID=36143196
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05787010.7A Active EP1917441B1 (en) | 2005-08-25 | 2005-08-25 | Pump housing |
Country Status (13)
Country | Link |
---|---|
US (1) | US20100135837A1 (en) |
EP (1) | EP1917441B1 (en) |
JP (1) | JP5011297B2 (en) |
KR (1) | KR101210400B1 (en) |
CN (1) | CN101248275A (en) |
AU (1) | AU2005335899B2 (en) |
CA (1) | CA2618729C (en) |
DK (1) | DK1917441T3 (en) |
ES (1) | ES2597380T3 (en) |
PL (1) | PL1917441T3 (en) |
PT (1) | PT1917441T (en) |
TW (1) | TW200708665A (en) |
WO (1) | WO2007022798A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5180709B2 (en) * | 2008-07-10 | 2013-04-10 | 株式会社神戸製鋼所 | Screw compressor |
ES2607961T3 (en) | 2010-07-12 | 2017-04-04 | Hanwha Chemical Corporation | Conductive coating composition and method for manufacturing a conductive layer using the same |
KR101270932B1 (en) | 2010-08-05 | 2013-06-11 | 한화케미칼 주식회사 | Highly Efficient Heat Radiant Paint Using Carbon Materials |
AU2011341031B2 (en) * | 2010-12-10 | 2016-10-27 | Ateliers Busch Sa | Vacuum pump for applications in vacuum packaging machines |
JP5822747B2 (en) * | 2012-02-02 | 2015-11-24 | 住友重機械工業株式会社 | Cryopump |
DE102020113372A1 (en) | 2020-05-18 | 2021-11-18 | Leistritz Pumpen Gmbh | Screw pump |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2287716A (en) * | 1941-04-22 | 1942-06-23 | Joseph E Whitfield | Fluid device |
US2460957A (en) * | 1944-12-20 | 1949-02-08 | Joseph E Whitfield | Housing joint |
DE2948992A1 (en) * | 1979-12-05 | 1981-06-11 | Karl Prof.Dr.-Ing. 3000 Hannover Bammert | ROTOR COMPRESSORS, ESPECIALLY SCREW ROTOR COMPRESSORS, WITH LUBRICANT SUPPLY TO AND LUBRICANT DRAINAGE FROM THE BEARINGS |
US4714418A (en) * | 1984-04-11 | 1987-12-22 | Hitachi, Ltd. | Screw type vacuum pump |
US4955352A (en) * | 1986-02-26 | 1990-09-11 | Aisin Seiki Kabushiki Kaisha | Combined supercharger and supercharger coolant pump for an internal combustion engine |
JPS62218682A (en) * | 1986-03-19 | 1987-09-26 | Hitachi Ltd | Screw vacuum pump |
US4781553A (en) * | 1987-07-24 | 1988-11-01 | Kabushiki Kaisha Kobe Seiko Sho | Screw vacuum pump with lubricated bearings and a plurality of shaft sealing means |
JPH02245493A (en) * | 1989-03-20 | 1990-10-01 | Hitachi Ltd | Screw vacuum pump |
JPH05296159A (en) * | 1992-04-20 | 1993-11-09 | Tokico Ltd | Rotor for positive displacement rotating machine |
JP3240851B2 (en) * | 1994-09-09 | 2001-12-25 | 株式会社日立製作所 | Dry screw fluid machine |
JP3456090B2 (en) * | 1996-05-14 | 2003-10-14 | 北越工業株式会社 | Oil-cooled screw compressor |
JPH10318168A (en) * | 1997-05-22 | 1998-12-02 | T D Giken:Kk | Positive displacement pump |
DE19745616A1 (en) * | 1997-10-10 | 1999-04-15 | Leybold Vakuum Gmbh | Cooling system for helical vacuum pump |
JP4062001B2 (en) * | 2001-10-19 | 2008-03-19 | 株式会社デンソー | Gas compression device |
JP2005036814A (en) * | 2004-11-01 | 2005-02-10 | Nabtesco Corp | Positive displacement pump |
-
2005
- 2005-08-25 AU AU2005335899A patent/AU2005335899B2/en active Active
- 2005-08-25 JP JP2008527314A patent/JP5011297B2/en active Active
- 2005-08-25 EP EP05787010.7A patent/EP1917441B1/en active Active
- 2005-08-25 ES ES05787010.7T patent/ES2597380T3/en active Active
- 2005-08-25 WO PCT/EP2005/054194 patent/WO2007022798A1/en active Application Filing
- 2005-08-25 DK DK05787010.7T patent/DK1917441T3/en active
- 2005-08-25 KR KR1020087004386A patent/KR101210400B1/en active IP Right Grant
- 2005-08-25 PT PT57870107T patent/PT1917441T/en unknown
- 2005-08-25 CN CNA2005800514057A patent/CN101248275A/en active Pending
- 2005-08-25 PL PL05787010.7T patent/PL1917441T3/en unknown
- 2005-08-25 CA CA2618729A patent/CA2618729C/en active Active
- 2005-08-25 US US11/990,135 patent/US20100135837A1/en not_active Abandoned
-
2006
- 2006-03-14 TW TW095108495A patent/TW200708665A/en unknown
Also Published As
Publication number | Publication date |
---|---|
KR20080037685A (en) | 2008-04-30 |
KR101210400B1 (en) | 2012-12-10 |
ES2597380T3 (en) | 2017-01-18 |
JP5011297B2 (en) | 2012-08-29 |
JP2009506245A (en) | 2009-02-12 |
PL1917441T3 (en) | 2016-12-30 |
CA2618729C (en) | 2013-08-13 |
CN101248275A (en) | 2008-08-20 |
WO2007022798A1 (en) | 2007-03-01 |
PT1917441T (en) | 2016-10-12 |
EP1917441A1 (en) | 2008-05-07 |
TW200708665A (en) | 2007-03-01 |
AU2005335899A1 (en) | 2007-03-01 |
US20100135837A1 (en) | 2010-06-03 |
CA2618729A1 (en) | 2007-03-01 |
AU2005335899B2 (en) | 2011-06-09 |
DK1917441T3 (en) | 2016-10-31 |
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