EP3420193A1 - Compressor - Google Patents
CompressorInfo
- Publication number
- EP3420193A1 EP3420193A1 EP16707410.3A EP16707410A EP3420193A1 EP 3420193 A1 EP3420193 A1 EP 3420193A1 EP 16707410 A EP16707410 A EP 16707410A EP 3420193 A1 EP3420193 A1 EP 3420193A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compressor
- compressor body
- compressor according
- central axis
- relative
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000008093 supporting effect Effects 0.000 claims abstract description 14
- 230000008878 coupling Effects 0.000 claims description 93
- 238000010168 coupling process Methods 0.000 claims description 93
- 238000005859 coupling reaction Methods 0.000 claims description 93
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 239000000314 lubricant Substances 0.000 description 22
- 239000000463 material Substances 0.000 description 15
- 238000005461 lubrication Methods 0.000 description 13
- 230000002349 favourable effect Effects 0.000 description 12
- 229910000838 Al alloy Inorganic materials 0.000 description 10
- 229910000639 Spring steel Inorganic materials 0.000 description 8
- 230000001050 lubricating effect Effects 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000008186 active pharmaceutical agent Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C17/00—Arrangements for drive of co-operating members, e.g. for rotary piston and casing
- F01C17/06—Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements
- F01C17/063—Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements with only rolling movement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
- F04C18/0253—Details concerning the base
-
- 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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/005—Axial sealings for working fluid
-
- 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
- F04C29/0021—Systems for the equilibration of forces acting on the pump
-
- 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
- F04C2240/80—Other components
- F04C2240/801—Wear plates
Definitions
- the invention relates to a compressor comprising a compressor housing, a compressor arranged in the compressor housing with a first stationary compressor body and a second, relative to the stationary compressor body arranged movable compressor body, formed in the form of a Kreisvolvente first and second spiral ribs to form compression chambers,
- a compressor housing a compressor arranged in the compressor housing with a first stationary compressor body and a second, relative to the stationary compressor body arranged movable compressor body, formed in the form of a Kreisvolvente first and second spiral ribs to form compression chambers
- Compressor body is supported against movement in the direction parallel to the central axis of the stationary compressor body and parallel to a plane perpendicular to the central axis when moving in the direction transverse to the central axis, an eccentric drive for the scroll compressor unit, one driven by the drive motor and on a track around the Has central axis rotating cam, which in turn rotatably cooperates with a cam receiver of the second compressor body, and a self-rotation of the second compressor body preventing
- the invention has for its object to optimize a compressor of the type described above.
- the axial guide has a carrier element which serves as a support for a compressor rib base supporting the spiral rib of the second compressor body on a support surface serves that the Abstweilf pool is arranged radially outwardly relative to the driver, and that the self-rotation preventing coupling comprises at least two coupling element sets, which in turn comprise at least two coupling elements and that the coupling element sets are arranged radially outwardly relative to the AxialstNeill constitutional.
- the advantage of the solution according to the invention is the fact that on the one hand the coupling element sets are arranged in the largest possible radial distance from the central axis and thus due to the larger lever arm, the forces acting on the individual coupling elements are lower, so that the individual coupling elements for less Forces must be designed.
- a driver receptacle is usually arranged in the second compressor body, it is also preferably provided that the axial support surface is arranged radially outwardly relative to the driver receptacle.
- the Axialstütz design could run at a radial distance from the cam receiver.
- a spatially particularly optimal solution provides that the Axialstweil structure is arranged radially adjacent to the Mit resumery and thus extends, starting from the Mit supportive technique radially outward.
- the Axialstweil structure is arranged on a side facing away from the spiral rib side of the Mit resumery.
- the Axialstschreib construction can in different ways
- the Axialstütz design comprises an encircling around a central axis of the second compressor body ring surface area, wherein such an annular surface area guarantees optimum lubrication of the Axialstweil construction.
- the annular surface area is formed as a closed in a circumferential direction about the central axis and contiguous surface, that is, that the annular surface area in the circumferential direction has no interruptions.
- annular surface area is closed in the radial direction to the central axis of the second compressor body and extends coherently from an inner contour to an outer contour.
- the annular surface region is thus formed as a whole homogeneous region without interruptions both in the direction of rotation and in the radial direction and without singularities.
- a favorable, and in particular a sufficiently large axial support surface forming solution provides that a radius of the inner contour of the annular surface region is smaller than two-thirds of a radius of the outer contour of the annular surface region. Furthermore, it is altogether envisaged that the annular surface area of the axial support surface comprises at least 80% of the total area of the axial support surface, and in particular the contiguous and closed area of the support surface dominates the support of the second compressor body.
- the Axialstütz the second compressor body could be slidably supported on a stationary element in the simplest case.
- Carrier element arranged sliding opens the possibility to provide an optimal lubricant supply.
- the slider could be either one-dimensionally movable relative to the compressor body base or relative to the carrier member.
- the sliding body is movable in two dimensions relative to the compressor body base and relative to the carrier element.
- the slider relative to the compressor body base or relative to the support member can perform a limited orbital motion.
- the orbital movement is expediently defined by a predominantlysorbitalradius which is smaller than the compressor orbital radius of the movable compressor body.
- the guide orbital radius for the slider is at values equal to or less than 0.5 times the compressor orbital radius. It is better if the values of the guide orbital radius are 0.3 times the compressor orbital radius or less, more preferably 0.2 times the compressor orbital radius or less.
- the guide orbital radius is 0.01 times the compressor orbital radius or more, 0.05 times the compressor orbital radius or more.
- the guide has a first guide element which is arranged on the sliding body and has a second guide body element which is connected either to the compressor body base or to the carrier element.
- the guide with play as guide elements has a guide pin and a guide pin cooperating with the guide, which are two-dimensionally movable relative to each other that the engaging in the guide recess guide pin within the guide recess due to its lower on the diameter of the guide recess Diameter is movable.
- the Axialstschreib construction could be supported on individual surface areas of the slider.
- the axial support surface is supported on an annular surface of the sliding body which revolves around the center axis of the first compressor body.
- the annular surface of the slider is formed as closed around the central axis of the first compressor body in a circumferential direction and continuously extending annular surface.
- the annular surface of the slider is dimensioned so that it is larger than the annular surface of the Axialstschreibamide, so that the Axialstschreibamide is always supported in the orbiting movement of the second compressor body over its entire surface on the annular surface of the slider.
- a peripheral surface adjoins the axial support surface radially inwardly and / or radially outwardly, which recesses relative to a plane in which the axial support surface extends runs.
- the supply of lubricant between the axial support surface and the sliding body can also be further promoted by the fact that the axial support surface and / or a sliding support surface carrying the axial support surface are provided with micro-depressions, for example material-related and / or incorporated and / or embossed depression structures
- an advantageous solution provides that the sliding body is supported with a sliding bearing surface on the support element.
- the Gleitauflage configuration could also be formed from partial surfaces.
- the sliding support surface is designed as a closed annular surface around the center axis of the stationary compressor body in the direction of rotation and continuous.
- the carrier element has a carrier surface on which the sliding body is supported by the sliding support surface.
- This support surface could also be formed from individual partial surfaces.
- the carrier surface is designed as a closed around the central axis of the stationary compressor body in the circumferential direction and continuous annular surface.
- the supply of lubricant between the carrier element and the sliding body can also be further facilitated by the fact that the sliding support surface and / or a support surface carrying the sliding support surface are provided with micro-recesses, for example material-related and / or incorporated and / or embossed depression structures
- the slider could have any shape.
- the sliding body is plate-shaped, in particular as an annular disc is formed.
- an advantageous solution provides that the second compressor body is provided with extending radially outwardly to the central axis outward extensions, to each of which a coupling element of the coupling element sets is held.
- the second compressor body With such a design of the second compressor body, it is possible to provide this with the lowest possible mass and on the other hand to arrange the coupling element sets in the largest possible radial distance from the central axis.
- the projections are held on a compressor body base of the second compressor body, so that thereby a guide of the second compressor body with the lowest possible tilting moments is possible.
- the second compressor body from an extruded profile and thereby realize the basic shape, namely the shape of the compressor body base with the molded projections by this basic shape, in which case the formation of the spiral ribs by machining a portion of the extruded profile.
- a particularly advantageous solution provides that the first compressor body is positioned by supporting fingers in the direction of its central axis and in particular is thereby supported relative to the carrier element.
- This solution has the general advantage that it is created by the support member, the possibility on the one hand the axial position of the first compressor body, on the other hand set the axial position of the second compressor body and thus in particular the axial position of the two compressor body relative to each other by the support member, so that characterized represents the support member is the only component, starting from which the position of the compressor elements are definable.
- the support member When providing support fingers, it is advantageous if the intermediate spaces are arranged between the supporting fingers supporting the first compressor body.
- an advantageous solution provides that the first compressor body is rotatably positioned by the support fingers.
- the first compressor body is fixed by the support fingers relative to the support member against rotation about its central axis rotationally fixed.
- the first stationary compressor body is made of a wear-resistant aluminum alloy.
- Such a first compressor body has optimal stability and fatigue strength.
- the second compressor body is made of a wear-resistant aluminum alloy, in particular of aluminum alloy casting.
- the production of the second compressor body of an aluminum alloy has the advantage that this second compressor body has a low mass, which in particular brings advantages when the second compressor body at high speed on the orbital path about the central axis of the first
- Compressor body to move around.
- a material combination of aluminum alloy cast steel between the first and the second compressor body has the advantage of good running properties with a high fatigue strength and longevity.
- the slider could be made of any material, which, however, should result in an optimal material pairing to the second compressor body and the support element.
- the slider is formed of spring steel.
- the design of the slider made of spring steel on the one hand has the advantage that a favorable material pairing is given to the second compressor body made of aluminum, and on the other hand the advantage that thereby also an optimal material pairing can be produced to the support element.
- the design of the second sliding body made of spring steel has great advantages for cost reasons, since spring steel is a cost-effective material from which the shape suitable for the slider can be produced in a simple manner by cutting or punching. With regard to the carrier element so far no further details have been made.
- the support element could be made in the simplest case of steel or from the material of the compressor housing.
- the carrier element is made of an aluminum alloy, for example the same aluminum alloy as the compressor body.
- the support element has a support surface with a surface structure on which the sliding body is supported with its sliding support surface.
- An example provided surface structure of the support surface has the great advantage that these advantageously absorb lubricant and then can deliver the lubrication between the support surface and the Gleitauflage imagery.
- the lubricant can be held in particular in the surface structure, so that in a simple manner, a lubricating film between the support surface and the Gleitauflage configuration can be maintained permanently.
- Such a solution is particularly advantageous in terms of manufacture, since no separate part is required for the formation of the support surface, but the support surface itself can be formed by a compressor body base.
- catch receptacle is integrated in the compressor body base, so that no further part is required for this purpose either.
- the cam receiver is arranged in the direction parallel to the central axis of the movable compressor body without supernatant to the support surface on the compressor body base, so that the force acting on the Mit Talentage forces when driving the second compressor body in the direction parallel to the central axis seen between the support surface and the spiral ribs on the second compressor body act and thus the forces acting on the second compressor body during operation of the scroll compressor unit tilting moments are kept small.
- the self-rotation preventing coupling can be realized in a variety of ways.
- the self-rotation preventing clutch has more than two coupling element sets.
- the coupling element sets themselves no further details have been given so far.
- an advantageous solution provides that the coupling element sets around the central axis of the orbital path around at equal angular intervals
- one of the coupling elements is held on the compressor body base.
- one of the coupling elements is held on the carrier element.
- the coupling element sets are arranged and formed so that they are effective directly between the support member and the compressor body base of the second compressor body, so that a compact design can be realized.
- an advantageous solution provides that one of the coupling elements of the respective coupling element set is formed by a pin body.
- one of the coupling elements of the respective coupling element set is formed as a cylindrical receptacle.
- one of the coupling elements of the respective coupling element set is formed as arranged in the cylindrical receptacle annular body.
- the annular body loose, that is with game, sitting in the cylindrical receptacle and thus can move relative to the cylindrical receptacle.
- Such a design of the coupling element sets has the great advantage that on the one hand ensure optimum lubrication and on the other hand allow a low-noise movement of the second compressor body relative to the first compressor body, since in each of the coupling element sets two damping lubricant films are present, namely on the one hand, a lubricant film between the pen body and the annular body and on the other hand, a lubricant film between the annular body and the cylindrical receptacle, in which the annular body is arranged.
- the coupling element sets are arranged externally around the slider around.
- a lying course of the central axis of the stationary compressor body means that the central axis runs during operation of the compressor according to the invention approximately parallel to a horizontal, wherein the term "approximately parallel” is to be understood that the angle between the central axis and the horizontal when using the According to the invention compressor in the normal operating state is a maximum of 30 °, even better at most 20 °.
- the drive shaft of the drive motor is substantially horizontal, with the same conditions apply to the angle between the central axis of the drive shaft and a horizontal as for the alignment of the central axis of the stationary compressor body relative to
- the compressor housing is made of an aluminum alloy to build the compressor of the invention as possible to save weight, for example, from a continuous casting.
- the compressor thus also has a better resistance to external weather influences.
- Fig. 1 is a perspective view of a first embodiment of a compressor according to the invention; a longitudinal section through the first embodiment of the compressor according to the invention, in a running through a central axis of a stationary compressor body horizontal sectional plane; a longitudinal section through the first embodiment of the compressor similar to Figure 2 in a running through the central axis of the stationary compressor body vertical sectional plane.
- a schematic representation of interdigitated spiral ribs and the orbiting movement of one of the spiral ribs and a representation of an orbital path of the movable spiral rib relative to the stationary spiral rib a cross-section through a scroll compressor unit along line 5-5 in Figure 3 in the region of the intermeshing spiral ribs. a section along line 6-6 in Fig.
- FIG. 3 a section along line 7-7 in Fig. 3; an enlarged view of the area A in FIG. 7; a partial section corresponding to Figure 3 through the compressor housing in the region of the scroll compressor unit in a second embodiment. a section along line 10-10 in FIG. 9;
- FIG. 11 is a section along line 11-11 in FIG. 9 and Fig. 12 is a section similar to Fig. 9 by a third embodiment of a compressor according to the invention.
- FIG. 1 shows a compressor according to the invention designated as a whole by 10 for a gaseous medium, in particular a refrigerant, comprising a compressor housing designated as a whole by 12, which has a first end housing section 14, a second end housing section 16 and between the end housing sections 14 and 16 arranged intermediate portion 18 has.
- a scroll compressor unit 22 as a whole, which has a first one in the compressor housing 12, in particular in the first housing section
- Housing portion 14 stationary arranged compressor body 24 and a second relative to the stationary arranged compressor body 24 movable compressor body 26 has.
- the first compressor body 24 includes a compressor body base 32 over which a first spiral rib 34 rises and the second compressor body 26 also includes a compressor body base 36 above which a second spiral rib 38 rises.
- the compressor bodies 24 and 26 are arranged relative to each other so that the spiral ribs 34, 38 intermesh to, as shown in Fig. 4, between them at least one, preferably forming a plurality of compression chambers 42, in which a compression of the gaseous medium, for example Refrigerant, characterized in that the second compressor body 26 moves with its central axis 46 about a central axis 44 of the first compressor body 24 on an orbital path 48 with a Ver emphasizerorbitalbahnradius VOR, wherein the volume of the compression chambers 42 is reduced and finally compressed gaseous medium exits through a central outlet 52, while aspirated gaseous medium is sucked by circumferentially opening compressor chambers 42 radially outwardly relative to the central axis 44.
- a compression of the gaseous medium for example Refrigerant
- the sealing of the compression chambers 42 relative to each other also takes place, in particular, in that the spiral ribs 34, 38 are provided at the end with axial sealing elements 54 and 58 which abut sealingly against the respective bottom surface 62, 64 of the respective other compressor body 26, 24, the bottom surfaces 62 , 64 are formed by the respective compressor body base 36 and 32 and lie in a direction perpendicular to the central axis 44 extending plane.
- the spiral compressor unit 22 is accommodated as a whole in a first housing body 72 of the compressor housing 12, which has an end-side cover section 74 and a cylindrical ring section 76 integrally formed on the end-side cover section 74, which in turn engages with a collar shoulder 78 in a sleeve body 82 of the housing body 72. formed on a central housing body 84 forming the intermediate section 18, wherein the central housing body 84 is closed on a side opposite the first housing body 72 by a second housing body 86 forming an inlet chamber 88 for the gaseous medium.
- the sleeve body 82 encloses the scroll compressor unit 22, whose first compressor body 24 is connected to the compressor body base 32
- the first compressor body 24 is fixed immovably in the housing body 72 against all movements parallel to the support surface 94.
- the first compressor body 24 is fixed within the first housing body 72 and thus also within the compressor housing 12 in a precisely defined position stationary.
- Compressor housing 12 positioned first compressor body 24 and is supported in the direction parallel to the central axis 44 such that the Axialêtlemente 58 remain on the bottom surface 64 and not lift from this, while the compressor body base 36 with the Axialstütz construction 102 transversely to the central axis 44 slidably relative to the axial guide 96 can move (Fig. 2, 3 and 6).
- Compressor body base 36 rests with the Axialstütz Structure 102, but on which a designated as a whole with 116 particular plate-shaped slider 116 rests with a Gleitauflage requirements 118, wherein the sliding body 116 with a Gleitauflage requirements 118 opposite Gleitstütz phenomenon 122, the Axialstützamide 102 against movements parallel to the central axis 44 is supported however slidably supported with respect to movements transverse to the central axis 44.
- the axial guide 96 provides that upon movement of the second compressor body 26 on the orbital path 48 about the central axis 44 of the first compressor body 24 on the one hand, the second compressor body 26 with the compressor body base 36 and the Axialstützamide 102 moves relative to the slider 116 On the other hand, on the other hand, the sliding body 116 in turn moves relative to the support member 118.
- the sliding support surface 122 and the sliding support surface 118 of the slider 116 are provided with recesses, in particular micro-recesses, which form receptacles for a lubricant and contribute to the distribution of the lubricant.
- the slider 116 is provided by means of a device shown in FIG. 7 and 8 shown and designated as a whole with 132 guide performed with play relative to the support member 112, wherein the guide with game 132 includes a sliding body 116 provided in the guide recess 134 which includes a
- Diameter DF as well as an anchored in the support member 112 guide pin 136 whose diameter DS is smaller than the diameter DF, so that half of the difference DF-DS defines a mecanicalradius with which the slider 116 is an orbiting movement relative to the support member 112th can perform.
- the guide orbital radius FOR is 0.01 times the compressor orbital radius or more
- the carrier element 112 is made of an aluminum alloy at least in the region of the support surface 114, improved lubrication is additionally ensured by lubricant entering the surface structures of the carrier element 112 provided, for example, and thus via the pores of the carrier element 112 in FIG Area of the support surface 114 is available for the construction of the lubricating film in the intermediate space.
- the sliding body 116 itself is formed as a plate-shaped, annular part made of spring steel and thus the support surface 114 facing the sliding support surface 118 is a smooth Federstahlober Chemistry, the formation of the lubricating film is additionally promoted.
- the support member 112 is not only provided with the support surface 114 on which the slider 116 rests, but also with the support surfaces 94 on which the support fingers 92 of the first compressor body 24 are supported. This makes it possible to determine the position of the first compressor body 24 and the position of the second compressor body 26 in the direction of the central axis 44 relative to each other by suitable design of the support member 112, in particular by a single surface of the support member 112, which both the support surface 114 as also includes the bearing surfaces 94 takes place.
- the support member 112 is further arranged both axially in the direction of the central axis 44 and against rotational movements about the central axis 44 fixed in the housing body 72.
- Compressor body base 36 in a radially inner edge region 152 and in a radially outer edge region 154 with a relative to the Axialstütz phenomenon 102 inclined and opposite Axialstschreib structure 102, recessed extending edge surface 156 and 158 provided, which together with the Gleitauflage Structure 122 to a wedge-shaped radially outward or radially inwardly opening gap, which facilitates the access of lubricant.
- the structure of the lubricating film between the sliding support surface 122 and the axial support surface 102 is promoted by the sliding support surface 122 and the axial support surface 102, in the overlapping region in which they
- annular surface 126 of the Axialstütz construction 102 extends from an inner contour IK with a radius IR thereof up to an outer contour AK, wherein the radius IR less than two-thirds of an outer radius AR.
- annular surface 124 of the Gleitstschreib structure 122 is dimensioned so that the annular surface 126 of the Axialstschreib materials 102 always rests fully on all relative movements to the Gleitstschreib structure 122 on this.
- the Axialstütz construction 102 and cooperating with this Gleitstütz phenomenon 122 and the support surface 114 and the cooperating Gleitauflage requirements 118 are all radially within a plurality of coupling element sets 162 having coupling 164, which at equal radial distances from the central axis 44 and at equal angular intervals in the circumferential direction U are arranged about the central axis 44 and together form a coupling 164, which prevents a self-rotation of the second movable compressor body 26.
- Each of these coupling element sets 162 comprises, as shown in FIGS. 2, 7 and 8, as a first coupling element 172 a pin body 174, which has a cylindrical lateral surface 176 and engages with this cylindrical lateral surface 176 in a second coupling element 182.
- the second coupling element 182 is formed by an annular body 184 having a cylindrical inner surface 186 and a cylindrical outer surface 188 which are coaxial with each other.
- This second coupling element 182 is guided in a third coupling element 192, which is provided as one provided in the carrier element 112
- Receiving 194 is formed for the annular body 184 and which has a cylindrical inner wall surface 196.
- a diameter DI of the inner wall surface 196 is greater than a diameter DRA of the cylindrical outer surface 188 of the annular body 184 and a diameter DRI of the cylindrical inner surface 186 inevitably smaller than the diameter DRA of the cylindrical outer surfaces 188 of the annular body 184, wherein also the diameter DRI of the cylindrical Inner surface 186 is larger than a diameter DSK of the cylindrical lateral surface 176 of the pin body 174th
- each coupling element set 162 in turn forms an orbital guide whose maximum orbital radius OR for the orbital motion corresponds to DI / 2- (DRA-DRI) / 2-DSK / 2.
- the movable compressor body 26 is guided relative to the stationary compressor body 24 by the coupling 164, in each case one of the coupling element sets 162 is effective to prevent the self-rotation of the second movable compressor body 26, wherein, for example, in six coupling element sets 162 after passing through an angular range of 60 °, the effectiveness of each coupling element set 162 of a coupling element set 162 to the next direction of rotation coupling element set 162 replaced.
- Recording 194 is effective, on the one hand, the wear resistance of
- Improved coupling element sets 162 on the other hand, the lubrication improved in the same area and also reduces the noise generated by the coupling element sets 162, which results from the change of effectiveness of a coupling element set 162 to the other coupling element set 162. It is particularly essential that the coupling element sets 162 undergo adequate lubrication, in particular lubrication between the cylindrical surface 176 of the pin body 174 and the cylindrical inner surface 186 of the ring body 184 and lubrication between the cylindrical outer surface 188 of the ring body 184 and the cylindrical inner wall surface 196 of Recording 194.
- the compressor body base 36 is provided with star-shaped projections 212 extending radially outwards, which engage in intermediate spaces 214 between supporting fingers 92 which follow each other in a direction of rotation U about the center axis 44, so that the coupling elements 172 likewise engage in these Gaps 214 are located and are thus arranged within the housing body 72 in as large a radial distance from the central axis 44.
- This predetermined by the greatest possible radial distance of the coupling elements 172 positioning the coupling element sets 162 in a radial distance as possible from the central axis 44 has the advantage that due to the large lever arm acting on the coupling element sets 162 forces can be kept as small as possible , which has a positive effect on the component dimensioning.
- a refrigerant flow and / or lubricant flow through the receptacles 194 is further facilitated by the fact that the extensions 212 between the coupling elements 172 and the Axialstütz specifications 102 a recess 216 have.
- the inventive concept of the lubrication of the axial guide 96 and the coupling element sets 162 is particularly advantageous if the center axes 44 and 46 of the compressor body 24 and 26 lying normally, that is a maximum of an angle of 30 ° to a horizontal run, in the compressor housing 12, in particular in the region of the first housing body 72 at a lowermost position in the direction of gravity lubricant bath 210 forms, from the lubricant in operation
- the drive of the movable compressor body 24 takes place (as shown in FIGS. 2 and 3) by a drive motor designated as a whole by 222, for example an electric motor which in particular has a stator 224 held in the central housing body 84 and a rotor 226 arranged inside the stator 224 which is disposed on a drive shaft 228 which is coaxial with the central axis 44 of the stationary compressor body 24.
- a drive motor designated as a whole by 222, for example an electric motor which in particular has a stator 224 held in the central housing body 84 and a rotor 226 arranged inside the stator 224 which is disposed on a drive shaft 228 which is coaxial with the central axis 44 of the stationary compressor body 24.
- the drive shaft 228 is mounted on the one hand in a compressor-facing bearing unit 232 arranged between the drive motor 222 and the spiral compressor unit 22 and in the central housing body 84 and on the other hand in a bearing unit 234 facing away from the compressor on a side of the drive motor 222 opposite the bearing unit 232
- the compressor-remote storage unit 234 is mounted, for example, in the second housing body 86, which closes the central housing body 84 on a side opposite the first housing body 72 side.
- aspirated medium in particular the refrigerant
- the drive shaft 228 drives the movable compressor body 26 via an eccentric drive indicated as a whole by 242, which moves orbiting around the central axis 44 of the stationary compressor body 24.
- the eccentric drive 242 comprises, in particular, an eccentric drive pin 244 held in the drive shaft 228, which moves a driver 246 on an orbital path about the central axis 44, which is rotatable on the
- Eccentric 244 is mounted and in turn is rotatably mounted in a pivot bearing 248, wherein the pivot bearing 248 allows rotation of the driver 246 relative to the movable compressor body 26.
- the cam 246 is limitedly rotatable relative to the cam 244 and relative to a cam receiver 252 and allows for adjustment of the radius of orbital motion of the movable compressor body 26 to hold the spiral ribs 34 and 38 in abutment with each other.
- the second compressor body 26 For receiving the pivot bearing 248, as shown in FIGS. 2 and 3, the second compressor body 26 is provided with the catch receptacle 252, which receives the pivot bearing 248.
- the cam receiver 252 is relative to the flat side 98 of the
- Compressor body base 36 is reset and thus arranged integrated in the compressor body base 36, so that acting on the movable compressor body 26 driving forces on one of the spiral rib 38 facing side of the flat side 98 of the compressor body base 36 are effective and thus with low tilting torque drive the movable compressor body 26 through the axial guide 96 seen in the direction of the central axis 44 between the driver receiving 252 and the drive motor 222 axially supported on the Axialstütz construction 102 and is guided transversely to the central axis 44 movable.
- the support surface 114 of the support member 112 form such that it extends as far as possible in the direction of the drive shaft 228, so that thereby a favorable support of the compressor body 26 can take place with the largest possible axial support surface 102.
- the cam receiver 252 as shown in FIGS. 2, 3 and 6 surrounded by the radial direction to the central axis 46 outer Axialstütz phenomenon 102 and the Axialstützamide 102 is in turn of the radial direction to the central axis 44 outer coupling element sets 162 of surround the self-rotation of the second compressor body 26 preventing coupling 164.
- FIGS. 9 to 11 In a second embodiment, shown in FIGS. 9 to 11, those elements which are identical to those of the first embodiment are provided with the same reference numerals, so that the comments on these elements can be fully incorporated by reference. In contrast to the first embodiment is in the second
- the first stationarily arranged compressor body 94 ' is not itself provided with the fingers 92, but the compressor body base 32' is located on the lid portion 74 'radially within the ring portion 76' and the annular shoulder 78 'is provided with support fingers 292, which on the support element 112 and rotatably connected to the support member 112 by the positioning pins 142, which engage in this case in the support fingers 292.
- the compressor body base 36 is formed in the same manner as in the first embodiment, and also the coupling member sets 162 are formed in the same manner as in the first embodiment.
- FIG. 12 In a third embodiment, shown in FIG. 12, are also those elements which are identical to those of the preceding embodiments, provided with the same reference numerals, so that reference can be made to the comments on these embodiments.
- the extensions 212 of the compressor body base 36 of the second compressor body 26 are adapted to receive the second coupling elements 182 of the coupling element sets 162, while the first coupling elements 172 of the coupling element sets 162 in the compressor body base 32 "of the first compressor body 24 are held and extend into the second coupling elements 182, the advantage of this embodiment is the fact that thereby the coupling elements 172 and 182 cooperate in a plane effect WE, which also cuts the pivot bearing 248 for the driver 246 and also the extensions 212 of the compressor body base 36 "cuts.
- the supporting action of the coupling element sets 162 of the coupling 164 is further improved and in particular reduces the tendency of the orbiting compressor body 26 "to tilt relative to the central axis 44.
- the third embodiment allows a large degree of freedom with regard to the formation and arrangement of the projections 212 in the direction of the central axis 44 different from that in FIG. 12 illustrated embodiment, so this optimally with respect to their position in the direction of the central axis 44 relative to the axial support surface 102 and the spiral rib 38 of the second compressor body 26 can be optimally arranged.
Abstract
Description
Claims
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PCT/EP2016/053943 WO2017144098A1 (en) | 2016-02-25 | 2016-02-25 | Compressor |
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EP3420193A1 true EP3420193A1 (en) | 2019-01-02 |
EP3420193B1 EP3420193B1 (en) | 2020-08-12 |
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US (1) | US11041386B2 (en) |
EP (1) | EP3420193B1 (en) |
CN (1) | CN108779675B (en) |
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DE102019124516A1 (en) * | 2019-09-12 | 2021-03-18 | Hanon Systems | Positioning arrangement |
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JPH0726621B2 (en) * | 1982-09-29 | 1995-03-29 | 株式会社日立製作所 | Oil-free scroll fluid machine |
JPS6278494A (en) * | 1985-10-02 | 1987-04-10 | Hitachi Ltd | Scroll type fluid machine |
US5407335A (en) * | 1986-08-22 | 1995-04-18 | Copeland Corporation | Non-orbiting scroll mounting arrangements for a scroll machine |
JP3561929B2 (en) * | 1993-08-23 | 2004-09-08 | 株式会社豊田自動織機 | Scroll compressor |
DE69504233T2 (en) * | 1994-03-15 | 1999-01-07 | Denso Corp | Scroll compressor |
JP4273807B2 (en) * | 2003-03-31 | 2009-06-03 | 株式会社豊田自動織機 | Electric compressor |
JP2006097531A (en) * | 2004-09-29 | 2006-04-13 | Anest Iwata Corp | Turning scroll in scroll fluid machine |
JP2007291879A (en) * | 2006-04-21 | 2007-11-08 | Sanden Corp | Scroll type fluid machine |
WO2012035767A1 (en) * | 2010-09-16 | 2012-03-22 | パナソニック株式会社 | Inverter-integrated electric compressor |
US9523361B2 (en) * | 2011-01-11 | 2016-12-20 | Lg Electronics Inc. | Scroll compressor having back pressure chamber that operatively contains a discharge pressure and an intermediate pressure during different periods of time within a single compression cycle |
KR101441928B1 (en) * | 2012-03-07 | 2014-09-22 | 엘지전자 주식회사 | Horizontal type scroll compressor |
KR101462941B1 (en) * | 2012-03-07 | 2014-11-19 | 엘지전자 주식회사 | Horizontal type scroll compressor |
JP6007737B2 (en) * | 2012-11-13 | 2016-10-12 | 株式会社豊田自動織機 | Scroll compressor |
JP6171601B2 (en) * | 2013-06-12 | 2017-08-02 | 株式会社豊田自動織機 | Rotation prevention mechanism of scroll compressor |
KR102177990B1 (en) * | 2014-05-02 | 2020-11-12 | 엘지전자 주식회사 | compressor and scroll compressor |
DE102014113435A1 (en) * | 2014-09-17 | 2016-03-17 | Bitzer Kühlmaschinenbau Gmbh | compressor |
-
2016
- 2016-02-25 EP EP16707410.3A patent/EP3420193B1/en active Active
- 2016-02-25 CN CN201680082607.6A patent/CN108779675B/en active Active
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CN108779675B (en) | 2021-05-11 |
US20180363464A1 (en) | 2018-12-20 |
WO2017144098A1 (en) | 2017-08-31 |
US11041386B2 (en) | 2021-06-22 |
CN108779675A (en) | 2018-11-09 |
EP3420193B1 (en) | 2020-08-12 |
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