EP3701151B1 - Passage d'alimentation en lubrifiant pour fond de compresseur - Google Patents
Passage d'alimentation en lubrifiant pour fond de compresseur Download PDFInfo
- Publication number
- EP3701151B1 EP3701151B1 EP18803497.9A EP18803497A EP3701151B1 EP 3701151 B1 EP3701151 B1 EP 3701151B1 EP 18803497 A EP18803497 A EP 18803497A EP 3701151 B1 EP3701151 B1 EP 3701151B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- shaft
- passage
- lubricant
- fluid machine
- 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.)
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- 239000000314 lubricant Substances 0.000 title claims description 83
- 239000012530 fluid Substances 0.000 claims description 67
- 230000006835 compression Effects 0.000 claims description 15
- 238000007906 compression Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 230000001050 lubricating effect Effects 0.000 claims description 4
- 230000004044 response Effects 0.000 claims description 2
- 239000003507 refrigerant Substances 0.000 description 10
- 230000004323 axial length Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Images
Classifications
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- 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
- F04C29/02—Lubrication; Lubricant separation
- F04C29/025—Lubrication; Lubricant separation using a lubricant pump
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- 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
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- 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
- F04C29/02—Lubrication; Lubricant separation
-
- 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
- F04C29/02—Lubrication; Lubricant separation
- F04C29/023—Lubricant distribution through a hollow driving shaft
Definitions
- the subject matter disclosed herein relates generally to fluid machines, and more specifically, to fluid machines, such as compressors.
- Non-flammable, low GWP refrigerants are replacing existing refrigerants in many applications, but have lower density and do not possess the same cooling capacity as existing refrigerants.
- Replacement refrigerants require a compressor capable of providing a significantly greater displacement, such as a screw compressor.
- a fluid machine that includes a casing; a first rotor fixed to a first shaft, the first rotor and the first shaft being rotatable about a first axis, wherein the first shaft is rotatably supported by the casing; a second rotor supported by the second shaft, the second rotor being rotatable about a second axis, wherein the second rotor is configured to rotate about the second shaft and wherein the second shaft is supported by and fixed relative to the casing; a sump having a volume of lubricant contained therein, a first lubricant passage for supplying lubricant from the sump to a dynamic interface associated with the first rotor, and a second lubricant passage for supplying lubricant from the sump to a dynamic interface associated with the second rotor.
- a pressure differential created within the fluid machine supplies the lubricant from the sump to the first lubricant passage and the second lubricant passage simultaneously.
- the pressure differential is formed between a high pressure adjacent at least one end of the casing and low pressure at a central location of the first rotor and the second rotor.
- first rotor and the first shaft are rotatably mounted to the casing without roller element bearings.
- At least one surface of the casing and the first shaft define the dynamic interface associated with the first rotor.
- the at least one surface of the casing arranged in direct contact with the first shaft functions as a bearing.
- the at least one surface of the casing arranged in direct contact with the first shaft includes a first surface arranged in direct contact with a portion of the first shaft adjacent a first end, and a second surface arranged in direct contact with a portion the first shaft adjacent a second end.
- the first lubricant passage includes a first portion for supplying lubricant to the first surface and a second portion, distinct from the first portion, for supplying lubricant to the second surface.
- the first lubricant passage further comprises: a cavity formed in a portion of the casing adjacent the first shaft, a passage extending axially through at least a portion of the first shaft, at least one radial hole coupling the cavity and the passage, and a groove extending from the cavity to an interior of a compression pocket formed between the first rotor and the second rotor and the casing.
- the first lubricant passage further comprises: a counter bore formed at the interface between the casing and the compression pocket.
- the first lubricant passage comprises: a groove extending from the sump to an interior of a (the) compression pocket formed between the first rotor and the second rotor and the casing.
- the second rotor comprises a working portion rotatable relative to the second shaft.
- the second shaft and the working portion define the dynamic interface associated with the second rotor.
- the second lubricant passage further comprises: a first passage extending axially through at least a portion of the second shaft, a second passage formed in an outer periphery of the second shaft, and at least one radial hole coupling the first passage and the second passage.
- the second passage extends axially such that a first end of the second passage is fluidly coupled to a first portion of the casing and a second, opposite end of the second passage is fluidly coupled to a second portion of the casing.
- a counter bore is formed in the casing where at least one of the first lubricant passage and the second lubricant passage enters a compression pocket formed between the first rotor and the second rotor.
- the fluid machine comprises a recess formed in the casing in fluid communication with the counter bore, the recess being arranged at an angle towards an interface between the first rotor and the second rotor.
- At least one of an angle, length, width, and depth of the recess is optimized to control a flow of lubricant to the compression pocket.
- a method of lubricating one or more dynamic interfaces of a fluid machine comprising a casing.
- the method includes supplying lubricant from a sump to a dynamic interface associated with a first rotor fixed to a first shaft of the fluid machine via a first lubricant passage, wherein the first rotor and the first shaft are rotatable about a first axis, and wherein the first shaft is rotatably supported by the casing; and supplying lubricant from a sump to a dynamic interface associated with a second rotor supported by a second shaft of the fluid machine via a second lubricant passage, wherein the second rotor is rotatable about a second axis, wherein the second rotor is configured to rotate about the second shaft and wherein the second shaft is supported by and fixed relative to the casing.
- the second lubricant passage is distinct from the first lubricant passage. Supplying lubricant to the dynamic interface associated with the first rotor and the dynamic interface associated with the second rotor occurs automatically and simultaneously in response to a pressure differential created within the fluid machine during operation of the fluid machine.
- supplying lubricant from the sump to the dynamic interface associated with the first rotor and supplying lubricant from the sump to the dynamic interface associated with the second rotor occurs without a pump or control valve.
- supplying lubricant from the sump to the dynamic interface associated with the first rotor further comprises: supplying lubricant via a first passage to a first bearing surface, the first passage extending through an opening formed in a first shaft of the first rotor, and supplying lubricant via a second passage to a second bearing surface.
- the fluid machine 20 is an opposed screw compressor.
- a fluid machine such as a pump, fluid motor, or engine for example.
- the fluid machine 20 includes a first rotor 22 intermeshed with a second rotor 24.
- the first rotor 22 is a male rotor having a male-lobed working portion 26 and the second rotor 24 is a female rotor including a female-lobed portion 28.
- the first rotor 22 may be a female rotor and the second rotor 24 may be a male rotor.
- the working portion 26 of the first rotor 22 includes at least one first helical lobe 30 and at least one second helical lobe 32.
- the first rotor 22 includes two separate portions defining the first helical lobes 30 and the second helical lobes 32.
- the first rotor 22, including the first and second helical lobes 30, 32 may be formed as a single integral piece.
- the fluid machine 20 includes a first shaft 34 fixed for rotation with the first rotor 22.
- the fluid machine 20 further include a casing 36 rotatably supporting the first shaft 34 and at least partially enclosing the first rotor 22 and the second rotor 24.
- a first end 38 and a second end 40 of the casing 36 are configured to rotatably support the first shaft 34.
- the first, lower end 38 of the casing 36 is formed by a lower bearing housing 42 and the second, upper end 40 of the casing 36 is formed by a distinct upper bearing housing 44.
- a rotor case 46 may extend between and couple the lower and upper bearing housings 42, 44.
- embodiments where the lower bearing housing 42 and/or the upper bearing housing 44 is integrally formed with the rotor case 46 are also contemplated herein.
- the first shaft 34 of the illustrated embodiments is directly coupled to an electric motor 48 operable to drive rotation of the first shaft 34 about an axis X.
- Any suitable type of electric motor 48 is contemplated herein, including but not limited to an induction motor, permanent magnet (PM) motor, and switch reluctance motor for example.
- the first rotor 22 is fixed to the first shaft 34 by a fastener, coupling, integral formation, interference fit, and/or any additional structures or methods known to a person having ordinary skill in the art (not shown), such that the first rotor 22 and the first shaft 34 rotate about axis X in unison.
- the fluid machine 20 additionally includes a second shaft 50 operable to rotationally support the second rotor 24.
- the second rotor 24 includes an axially extending bore 52 within which the second shaft 50 is received.
- the second shaft 50 is stationary or fixed relative to the casing 36 and the second rotor 24 is configured to rotate about the second shaft 50.
- embodiments where the second shaft 50 is also rotatable relative to the casing 36 are also contemplated herein.
- the first rotor 22 is shown as including four first helical lobes 30 and at least four second helical lobes 32.
- the illustrated, non-limiting embodiment is intended as an example only, and it should be understood by a person of ordinary skill in the art that any suitable number of first helical lobes 30 and second helical lobes 32 are within the scope of the disclosure.
- the first helical lobes 30 and the second helical lobes 32 have opposite helical configurations.
- the first helical lobes 30 are left-handed and the second helical lobes 32 are right-handed.
- the first helical lobes 30 may be right-handed and the second helical lobes 32 may be left-handed.
- the second rotor 24 has a first portion 54 configured to mesh with the first helical lobes 30 and a second portion 56 configured to mesh with the second helical lobes 32.
- each portion 54, 56 of the second rotor 24 includes one or more lobes 58 having an opposite configuration to the corresponding helical lobes 30, 32 of the first rotor 22.
- the first portion 54 of the second rotor 24 has at least one right-handed lobe 58a
- the second portion 56 of the second rotor 24 includes at least one left-handed lobe 58b.
- the first portion 54 of the second rotor 24 is configured to rotate independently from the second portion 56 of the second rotor 24.
- Each portion 54, 56 of the second rotor 24 may include any number of lobes 58.
- the total number of lobes 58 formed in each portion 54, 56 of the second rotor 24 is generally larger than a corresponding portion of the first rotor 24.
- the first rotor 22 includes four first helical lobes 30
- the first portion 54 of the second rotor 24 configured to intermesh with the first helical lobes 30 may include five helical lobes 58a.
- a gas or other fluid such as a low GWP refrigerant for example, is drawn to a central location by a suction process generated by the fluid machine 20.
- Rotation of the first rotor 22 and the second rotor 24 compresses the refrigerant and forces the refrigerant toward the outer ends 38, 40 of the casing 36 due to the structure and function of the opposing helical rotors 22, 24.
- the compressed refrigerant is routed by an internal gas passage within the casing 36 and discharged through the upper end 40 of the casing 36.
- the discharged refrigerant passes through the electric motor 48 and out of the discharge outlet 59.
- the fluid machine 20 includes one or more lubricant supply passages for providing a lubricant from a sump 61 to the dynamic interfaces of the machine 20.
- the sump 61 containing a volume of lubricant, such as oil for example is located adjacent and in communication with the lower bearing housing 42.
- a first shaft passage 60 extends axially through at least a portion of the first shaft 34. In the illustrated, non-limiting embodiment, the first shaft passage 60 extends from adjacent the lower end 38 of the casing 36 to adjacent the upper end 40 of the casing 36.
- a cavity 68 formed in the upper bearing housing 64 is configured to surround a periphery of part of the first shaft 34.
- At least one radial hole 70 extends between the first shaft passage 60 to the outer surface of the shaft 34 to deliver lubricant to the cavity 68.
- two radial holes 70 extending in opposite directions relative to one another from the first shaft passage 60 to the outer surface of the shaft 34.
- one or more surfaces of the bore formed in the upper bearing portion 44 and configured to contact the first shaft 34 may function as a bearing. For example, with reference for FIG.
- a first surface 72 disposed adjacent a first side of the cavity 68 is operable as a main bearing and a second surface 74, disposed adjacent a second, opposite side of the cavity 68, is operable as a sub-bearing.
- the bore formed in a lower bearing portion 62 for receiving a portion of the first shaft 34 includes a surface 76 operable as a bearing.
- a groove 80 extends over the axial length of the surface 72.
- This groove 80 is arranged in fluid communication with the cavity 68 and is configured to distribute lubricant from the cavity 68 over the axial length of the first surface 72.
- a groove 84 extends over the axial length of the surface 76. The groove 84 is configured to distribute lubricant from the sump 61 located adjacent the lower bearing housing 42.
- a second shaft passage 86 extends axially through the lower bearing housing 42 and at least a portion of the second shaft 50.
- the second shaft passage 86 extends over about half of the axial length of the second shaft 50.
- a shaft passage 86 of any length is contemplated herein.
- an axially extending passage 88 is formed in an outer periphery of the second shaft 50 and at least one radial hole 90 fluidly couples the shaft passage 86 and the axial passage 88.
- the radial hole is arranged generally centrally relative to the axial passage such that a portion of the lubricant is distributed in two directions relative to the radial hole 90.
- the axial passage 88 is configured to distribute lubricant at the interface formed between the second shaft 50 and the bore 52 formed in the second rotor 24. In an embodiment, the axial passage 88 extends between the upper and lower bearing housings 44, 42.
- the lubricant supply passages are intended to lubricate the surfaces 72, 74, and 76 of the upper and lower bearing housings 42, 44 that function as bearings for the first shaft 34, and the interface between the second shaft 50 and the second rotor 24 to reduce friction there between.
- a counter bore 78, 82, 92, 94 may be formed in the surfaces of the lower bearing housing 42 and the upper bearing housing 44 facing the first and second rotors 22, 24, respectively.
- the counterbore 78 may be arranged in fluid communication with the groove 80.
- the counterbore 82 may be arranged in fluid communication with the groove 84.
- the counterbore 92, 94 may be arranged in fluid communication with the axial passage 88. As a result, lubricant will flow to the counter bores 92, 94 after lubricating the interface between the second shaft 50 and the second rotor 24.
- a recess 96 may extend from one or more of the counter bores 78, 82, 92, 94 at an angle towards the interface between the first rotor 22 and the second rotor 24.
- the fluid machine illustrated and described herein includes a recess formed at each of the counter bores, embodiments where none or only some of the counter bores includes a recess are also within the scope of the disclosure.
- each recess 96 may be optimized to control the amount of lubricant flow to the compression pocket.
- the recess 96 has a linear contour and is aligned with the interface between the lobes 30, 32 of the first rotor 22 and the corresponding lobes 58a, 58b of the second rotor 24. Accordingly, as shown FIG. 6 , the angle of the recess 96 relative to the axis extending through the origin of both the first and second shafts 34, 50 is between 0 degrees and 60 degrees.
- the recess 96 By positioning the recess 96 in alignment with the intermeshing engagement of the rotors 22, 24, the recess communicates with both the high pressure and low pressure areas adjacent the first rotor 22 and second rotor 24. As a result, lubricant may flow from the recess 96 into the compression pocket formed between the first and second rotors 22, 24.
- the length of the recess 96 measured radially from the origin of the bore for receiving a corresponding shaft 34 or 50 is greater than a root radius of the rotor 22 or 24. Further, the length of the recess 96 may be greater than the root radius, but less than the tip radius of the rotor 22 or 24 associated therewith.
- a width of the recess 96 measured perpendicular to the length, is between 1mm and 10mm, and a depth of the recess 96 extending into the lower or upper bearing housing 42, 44 is between 1-5 times the axial length of the clearance between the rotor 22 or 24 and the adjacent surface of the lower or upper bearing housing 42, 44. It should be understood that in embodiments including a plurality of recesses, the configuration of recesses may be the same, or alternatively, may be different.
- the fluid machine 20 illustrated and described herein provides a simple and low cost configuration for a lubricant supply system. Because the pressure of the machine 20 is used to draw the fluid to the respective interfaces, costly devices, such as a pump or control valve for example, are not required. Further, because the lubricant is driven by the pressure differential created during operation of the machine 20, a stable supply of lubricant is provided over a wide range of shaft speeds.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Claims (15)
- Machine à fluide (20) comprenant :un boîtier (36) ;un premier rotor (22) fixé à un premier arbre (34), le premier rotor et le premier arbre pouvant tourner autour d'un premier axe, dans laquelle le premier arbre est supporté de manière rotative par le boîtier ;un second rotor (24) supporté par un second arbre (50), le second rotor pouvant tourner autour d'un second axe, dans laquelle le second rotor est configuré pour tourner autour du second arbre et dans laquelle le second arbre est supporté par et fixé par rapport au boîtier ;un carter (61) contenant un volume de lubrifiant en son sein ;un premier passage de lubrifiant destiné à fournir du lubrifiant depuis le carter jusqu'à une interface dynamique associée au premier rotor ; etun second passage de lubrifiant destiné à fournir du lubrifiant depuis le carter jusqu'à une interface dynamique associée au second rotor ;dans laquelle un différentiel de pression créé à l'intérieur de la machine à fluide fournit le lubrifiant depuis le carter au premier passage de lubrifiant et au second passage de lubrifiant simultanément.
- Machine à fluide selon la revendication 1, dans laquelle, pendant le fonctionnement de la machine à fluide (20), la différence de pression est formée entre une haute pression adjacente à au moins une extrémité (38, 40) du carter (36) et une basse pression à un emplacement central du premier rotor (22) et du second rotor (24).
- Machine à fluide selon la revendication 1 ou 2, dans laquelle le premier rotor (22) et le premier arbre (34) sont montés de manière rotative sur le carter (36) sans roulement à rouleaux.
- Machine hydraulique selon une quelconque de revendication précédente, dans laquelle au moins une surface (72, 74, 76) du carter (36) et le premier arbre (34) définissent l'interface dynamique associée au premier rotor (22).
- Machine à fluide selon la revendication 4, dans laquelle la au moins une surface (72, 74, 76) du carter (36) agencée en contact direct avec le premier arbre (34) fonctionne comme un palier.
- Machine à fluide selon la revendication 5, dans laquelle la au moins une surface du carter (36) agencée en contact direct avec le premier arbre (34) inclut une première surface (72) agencée en contact direct avec une partie du premier arbre (34) adjacente à une première extrémité (38), et une seconde surface (74) agencée en contact direct avec une partie du premier arbre (34) adjacente à une seconde extrémité (40).
- Machine à fluide selon la revendication 6, dans laquelle le premier passage de lubrifiant inclut une première partie destinée à fournir du lubrifiant à la première surface (72) et une seconde partie, distincte de la première partie, destinée à fournir du lubrifiant à la seconde surface (74).
- Machine à fluide selon une quelconque revendications précédente, dans laquelle le premier passage de lubrifiant comprend en outre :une cavité (68) formée dans une partie du boîtier (36) adjacente au premier arbre (34) ;un passage (60) s'étendant axialement à travers au moins une partie du premier arbre (34) ;au moins un trou radial (70) couplant la cavité (68) et le passage (60) ; etune rainure (80) s'étendant depuis la cavité (68) jusqu'à un intérieur d'une poche de compression formée entre le premier rotor (22) et le second rotor (24) et le boîtier (36).
- Machine à fluide selon la revendication 8, dans laquelle le premier passage de lubrifiant comprend en outre :un contre-alésage (78, 82) formé au niveau de l'interface entre le boîtier (36) et la poche de compression.
- Machine à fluide selon une quelconque revendication précédente, dans laquelle le premier passage de lubrifiant comprend :une rainure s'étendant depuis le carter vers un intérieur d'une (de la) poche de compression formée entre le premier rotor (22) et le second rotor (24) et le boîtier (36).
- Machine à fluide selon une quelconque revendication précédente, dans laquelle le second rotor (24) comprend :une partie de travail pouvant tourner par rapport au second arbre (50), dans laquelle le second arbre (50) et la partie de travail définissent l'interface dynamique associée au second rotor (24).
- Machine à fluide selon une quelconque revendication précédente, dans laquelle le second passage de lubrifiant comprend en outre :un premier passage (86) s'étendant axialement à travers au moins une partie du second arbre (50) ;un second passage (88) formé dans une périphérie extérieure du second arbre (50) ; etau moins un trou radial (90) couplant le premier passage (86) et le second passage (88) ;facultativement dans laquelle le second passage (88) s'étend axialement de telle sorte qu'une première extrémité du second passage (88) est couplée de manière fluidique à une première partie du boîtier (36) et qu'une seconde extrémité opposée du second passage (88) est couplée de manière fluidique à une seconde partie du boîtier (36).
- Machine à fluide selon l'une quelconque des revendications précédentes, dans laquelle un (le) contre-alésage (78, 82, 92, 94) est formé dans le carter (36) là où au moins l'un du premier passage de lubrifiant et du second passage de lubrifiant pénètre dans une (la) poche de compression formée entre le premier rotor (22) et le second rotor (34) ;facultativement dans laquelle la machine à fluide comprend en outre un évidement (96) formé dans le boîtier (36) en communication fluidique avec le contre-alésage (78, 82, 92, 94), l'évidement (96) étant agencé à un angle vers une interface entre le premier rotor (22) et le second rotor (24) ;en outre facultativement dans laquelle au moins un parmi un angle, une longueur, une largeur et une profondeur de l'évidement (96) est optimisé(e) pour commander un écoulement de lubrifiant vers la poche de compression.
- Procédé de lubrification d'une ou plusieurs interfaces dynamiques d'une machine à fluide (20), la machine à fluide (20) comprenant un boîtier (36), le procédé comprenant les étapes consistant à :fournir du lubrifiant à partir d'un carter (61) vers une interface dynamique associée à un premier rotor (22) fixé à un premier arbre (34) de la machine à fluide via un premier passage de lubrifiant, dans lequel le premier rotor (22) et le premier arbre (34) peuvent tourner autour d'un premier axe, et dans lequel le premier arbre (22) est supporté de manière rotative par le boîtier (36) ; etfournir du lubrifiant à partir d'un carter (61) vers une interface dynamique associée à un second rotor (24) supporté par un second arbre (50) de la machine à fluide (20) via un second passage de lubrifiant, le second passage de lubrifiant étant distinct du premier passage de lubrifiant, dans lequel le second rotor (24) peut tourner autour d'un second axe, dans lequel le second rotor (24) est configuré pour tourner autour du second arbre (50) et dans lequel le second arbre est supporté par et fixé par rapport au boîtier (36) ;dans lequel la fourniture de lubrifiant à l'interface dynamique associée au premier rotor (22) et l'interface dynamique associée au second rotor (24) se produit automatiquement et simultanément en réponse à une différence de pression créée à l'intérieur de la machine à fluide (20) pendant un fonctionnement de la machine à fluide.
- Procédé selon la revendication 14, dans lequel la fourniture de lubrifiant depuis le carter (61) vers l'interface dynamique associée au premier rotor (22) et la fourniture de lubrifiant depuis le carter (61) vers l'interface dynamique associée au second rotor (24) se produisent sans une pompe ou une vanne de commande ; et/ou
dans lequel la fourniture de lubrifiant depuis le carter (61) vers l'interface dynamique associée au premier rotor (22) comprend en outre les étapes consistant à :fournir du lubrifiant via un premier passage à une première surface de palier, le premier passage s'étendant à travers une ouverture formée dans le premier arbre (34) du premier rotor (22) ; etfournir du lubrifiant via un second passage à une seconde surface de palier ; et/oudans lequel le procédé comprend en outre une fourniture de lubrifiant à partir de l'interface dynamique associée au premier rotor (22) et de l'interface dynamique associée au second rotor (24) vers une poche de compression formée entre le premier rotor (22) et le second rotor (24).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US201762576430P | 2017-10-24 | 2017-10-24 | |
PCT/US2018/056101 WO2019083778A1 (fr) | 2017-10-24 | 2018-10-16 | Passage d'alimentation en lubrifiant pour fond de compresseur |
Publications (2)
Publication Number | Publication Date |
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EP3701151A1 EP3701151A1 (fr) | 2020-09-02 |
EP3701151B1 true EP3701151B1 (fr) | 2022-03-02 |
Family
ID=64308801
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18803497.9A Active EP3701151B1 (fr) | 2017-10-24 | 2018-10-16 | Passage d'alimentation en lubrifiant pour fond de compresseur |
Country Status (5)
Country | Link |
---|---|
US (1) | US20200325899A1 (fr) |
EP (1) | EP3701151B1 (fr) |
CN (1) | CN111247343A (fr) |
ES (1) | ES2909572T3 (fr) |
WO (1) | WO2019083778A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20230086482A1 (en) * | 2019-12-17 | 2023-03-23 | Johnson Controls Tyco IP Holdings LLP | Lubricant system for a compressor |
CN112780554A (zh) * | 2021-02-26 | 2021-05-11 | 珠海格力电器股份有限公司 | 压缩机和空调 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3811805A (en) * | 1972-05-16 | 1974-05-21 | Dunham Bush Inc | Hydrodynamic thrust bearing arrangement for rotary screw compressor |
US3922114A (en) * | 1974-07-19 | 1975-11-25 | Dunham Bush Inc | Hermetic rotary helical screw compressor with improved oil management |
GB1599878A (en) * | 1977-07-05 | 1981-10-07 | Pidgeon H H J | Oil-injected rotary compressors |
JP2616922B2 (ja) * | 1987-05-22 | 1997-06-04 | 株式会社日立製作所 | スクリユー圧縮機 |
WO1995002767A1 (fr) * | 1993-07-13 | 1995-01-26 | Thomassen International B.V. | Compresseur rotatif a vis |
GB2382556B (en) * | 2001-11-30 | 2005-03-09 | Railko Ltd | Propeller shaft bearing |
TW200835864A (en) * | 2007-02-27 | 2008-09-01 | Jian-Dih Jeng | Simplified fluid dynamic bearing design |
CN102022325B (zh) * | 2009-09-11 | 2012-10-24 | 广东美芝制冷设备有限公司 | 一种旋转压缩机及带有该压缩机的制冷装置 |
US8506272B2 (en) * | 2009-10-12 | 2013-08-13 | Emerson Climate Technologies (Suzhou) Research & Development Co., Ltd. | Scroll compressor lubrication system |
DE102010002649A1 (de) * | 2010-03-08 | 2011-09-08 | Bitzer Kühlmaschinenbau Gmbh | Schraubenverdichter |
KR101412644B1 (ko) * | 2011-08-02 | 2014-07-03 | 고쿠리츠다이가쿠호진 도호쿠다이가쿠 | 가스 배기용 펌프 시스템 및 가스 배기방법 |
CN104334884B (zh) * | 2012-04-19 | 2016-10-19 | 三菱电机株式会社 | 密闭式压缩机和具有该密闭式压缩机的蒸汽压缩式制冷循环装置 |
DE102012009103A1 (de) * | 2012-05-08 | 2013-11-14 | Ralf Steffens | Spindelverdichter |
DE102013106344B4 (de) * | 2013-06-18 | 2015-03-12 | Bitzer Kühlmaschinenbau Gmbh | Kältemittelverdichter |
JP6377839B2 (ja) * | 2015-03-31 | 2018-08-22 | 株式会社日立産機システム | ガス圧縮機 |
-
2018
- 2018-10-16 EP EP18803497.9A patent/EP3701151B1/fr active Active
- 2018-10-16 US US16/758,307 patent/US20200325899A1/en not_active Abandoned
- 2018-10-16 ES ES18803497T patent/ES2909572T3/es active Active
- 2018-10-16 CN CN201880069655.0A patent/CN111247343A/zh active Pending
- 2018-10-16 WO PCT/US2018/056101 patent/WO2019083778A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
WO2019083778A1 (fr) | 2019-05-02 |
US20200325899A1 (en) | 2020-10-15 |
EP3701151A1 (fr) | 2020-09-02 |
CN111247343A (zh) | 2020-06-05 |
ES2909572T3 (es) | 2022-05-09 |
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