• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The scroll compressor (1) has a fixed scroll (7); an orbiting volute (8); a drive shaft (16); a support arrangement (5) having an abutment bearing surface (9) on which the orbiting scroll (8) is slidably mounted; an anti-rotation device configured to prevent rotation of the orbiting scroll (8) relative to the fixed scroll (7), the anti-rotation device including orbital discs (28) respectively arranged in circular receiving holes (29) provided on the support arrangement (5), each orbital disc (28) being provided with an outer circumferential bearing surface (31) cooperating with an inner circumferential bearing surface (32) of the respective circular receiving hole (29) ; and a lubrication system configured to lubricate the inner and outer circumferential bearing surfaces (32, 31) with oil fed from an oil pan (50), the lubrication system having lubrication passages ( 41) formed within the support arrangement (5), each lubrication passage (41) having an oil outlet opening (41.2) opening into the inner circumferential bearing surface (32) of a hole respective circular receiving means (29) and at a predetermined position where a low load is applied to the respective orbital disk during rotation of the drive shaft.
    公开号:FR3062430A1
    申请号:FR1750672
    申请日:2017-01-27
    公开日:2018-08-03
    发明作者:Remi Bou Dargham；David Genevois；Arnaud Daussin；Sebastien Denis
    申请人:Danfoss Commercial Compressors SA；
    IPC主号:
    专利说明:

    Holder (s): DANFOSS COMMERCIAL COMPRESSORS Public limited company.
    O Extension request (s):
    ® Agent (s): CABINET GERMAIN & MAUREAU.
    ® SPIRAL COMPRESSORS WITH A LUBRICATION SYSTEM FOR ORBITAL DISCS.
    FR 3 062 430 - A1 ^ 7) The scroll compressor (1) has a fixed scroll (7); an orbiting volute (8); a drive shaft (16); a support arrangement (5) having a thrust bearing surface (9) on which the orbiting scroll (8) is slidably mounted; an anti-rotation device configured to prevent rotation of the orbiting volute (8) relative to the fixed volute (7), the anti-rotation device comprising orbital discs (28) respectively arranged in circular receiving holes (29) provided on the support arrangement (5), each orbital disc (28) being provided with an outer circumferential bearing surface (31) cooperating with an inner circumferential bearing surface (32) of the respective circular receiving hole (29) ; and a lubrication system configured to lubricate the inner and outer circumferential bearing surfaces (32, 31) with oil supplied from an oil pan (50), the lubrication system having lubrication passages ( 41) formed inside the support arrangement (5), each lubrication passage (41) having an oil outlet opening (41.2) opening into the inner circumferential bearing surface (32) of a hole respective circular receiving means (29) and at a predetermined position where a light load is applied to the respective orbital disc during rotation of the drive shaft.

    i
    Field of the invention
    The present invention relates to a scroll compressor, and in particular to a scroll compressor.
    Background of the invention
    Document JP4427354 discloses a scroll compressor comprising:
    - a fixed scroll including a fixed base plate and a fixed spiral winding,
    - an orbiting volute comprising an orbiting base plate and an orbiting spiral winding, the fixed spiral winding and the orbiting spiral winding forming a plurality of compression chambers,
    - a drive shaft comprising a drive part configured to drive the orbiting volute according to an orbital movement, the drive shaft being able to rotate about an axis of rotation,
    a support frame comprising a thrust bearing surface on which the orbiting volute is slidably mounted,
    - an anti-rotation device configured to prevent rotation of the orbiting volute relative to the fixed volute and to the support arrangement, the anti-rotation device comprising:
    - a plurality of orbital discs arranged respectively in circular receiving holes provided on the support arrangement, each orbital disc being provided with an eccentric hole and an outer circumferential bearing surface configured to cooperate with a circumferential bearing surface inside provided on the respective circular receiving hole, and
    - a plurality of pins each comprising a first end part fixed to the orbiting base plate and a second end part rotatably mounted in the eccentric hole of a respective orbital disc,
    - an oil pan, and
    - a lubrication system configured to at least partially lubricate the inner and outer circumferential bearing surfaces with oil supplied from the oil pan.
    In particular, the lubrication system includes a plurality of lubrication grooves formed in the thrust bearing surface, each of the lubrication grooves having a first end opening into an interior surface of the support frame and a second end opening into the support surface. inner circumferential bearing of a respective circular receiving hole and at a position where a high load occurs when the drive shaft rotates about its axis of rotation.
    Such an arrangement of the lubrication grooves in the thrust bearing surface decreases the area of the thrust bearing surface, which can adversely affect the reliability of the scroll compressor.
    Furthermore, such a location of the second end of each lubrication groove does not provide adequate lubrication of the outer circumferential bearing surfaces of the orbital discs, in particular for scroll compressors having a large capacity, since the high loads applied to the orbital discs during the rotation of the drive shaft avoid or at least limit the supply of oil between the outer circumferential bearing surfaces and the inner circumferential bearing surfaces of the anti-rotation device.
    Consequently, the configuration of the lubrication system of the scroll compressor previously disclosed does not ensure, in particular for large-capacity scroll compressors, an optimized oil supply to the anti-rotation device, which can adversely affect the reliability and the service life of the scroll compressor.
    Summary of the invention
    It is an object of the present invention to provide an improved scroll compressor which can overcome the disadvantages encountered in conventional scroll compressors.
    Another object of the present invention is to provide a scroll compressor which has improved reliability and durability compared to conventional scroll compressors.
    According to the invention, such a scroll compressor comprises:
    - a fixed scroll including a fixed base plate and a fixed spiral winding,
    - an orbiting volute comprising an orbiting base plate and an orbiting spiral winding, the fixed spiral winding and the orbiting spiral winding forming a plurality of compression chambers,
    - a drive shaft comprising a drive part configured to drive the orbiting volute according to an orbital movement, the drive shaft being able to rotate about an axis of rotation,
    a support arrangement comprising a thrust bearing surface on which the orbiting volute is slidably mounted,
    - an anti-rotation device configured to prevent rotation of the orbiting volute relative to the fixed volute and to the support arrangement, the anti-rotation device comprising:
    - a plurality of orbital discs arranged respectively in circular receiving holes provided on the support arrangement, each orbital disc being provided with an eccentric hole and an outer circumferential bearing surface configured to cooperate with a circumferential bearing surface inside provided on the respective circular receiving hole, and
    - A plurality of pins each having a first end part fixed, and in particular fixed in a non-rotatable manner, to the orbiting base plate and a second end part rotatably mounted in the eccentric hole of a respective orbital disc and cooperating with it,
    - an oil pan, and
    a lubrication system configured to at least partially lubricate the inner and outer circumferential bearing surfaces with oil supplied from the oil pan, the lubrication system comprising a plurality of lubrication passages formed inside the support arrangement, each lubrication passage having an oil outlet opening opening into the inner circumferential bearing surface of a respective circular receiving hole and at a predetermined position where a low load occurs upon rotation of the drive shaft around its axis of rotation.
    Such a configuration of the lubrication system, and in particular such a location of the oil outlet opening of each lubrication passage, ensures appropriate lubrication of the outer circumferential bearing surfaces of the orbital discs and thus gives the scroll compressor a improved reliability and longer life.
    In addition, since the lubrication passages are formed inside the support arrangement, and not in the thrust bearing surface, the area of the thrust bearing does not decrease, which also improves the reliability of the scroll compressor.
    The scroll compressor may also include one or more of the following characteristics, taken alone or in combination.
    According to one embodiment of the invention, an orthogonal projection of the predetermined position of the oil outlet opening of each lubrication passage on a projection plane parallel to the surface of the thrust bearing is located on an arc of circle having an angle between 0 and 20 °, and for example between 0 and 10 °, having a center centered on a center of the respective circular receiving hole, and being defined so that a respective plane containing the axis of rotation of the drive shaft and the center of the respective circular receiving hole forms a plane bisecting the angle of said circular arc, that is to say so that a respective plane containing the axis of rotation of the drive shaft and the center of the respective circular receiving hole also contains an angle bisector of the angle of said circular arc, and advantageously so that said circular arc is located between the axis of rotation d e the drive shaft and the center of the respective circular receiving hole.
    According to one embodiment of the invention, the predetermined position of the oil outlet opening of each lubrication passage is essentially located in a respective plane containing the axis of rotation of the drive shaft and a center of the respective circular receiving hole, and is in particular positioned between the axis of rotation of the drive shaft and the center of the respective circular receiving hole.
    According to an embodiment of the invention, each lubrication passage extends radially relative to the axis of rotation of the drive shaft.
    According to an embodiment of the invention, each lubrication passage extends below the thrust bearing surface.
    According to one embodiment of the invention, the lubrication system further comprises a circumferential groove provided on an inner surface of the support arrangement, the circumferential groove being configured to supply oil to the lubrication passages. The arrangement of the circumferential groove ensures better supply and better filling of the lubrication passages, and thus improves the lubrication of the anti-rotation device.
    According to an embodiment of the invention, each lubrication passage comprises an oil inlet opening opening into the inner surface of the support arrangement, and for example into the circumferential groove.
    According to an embodiment of the invention, the inner surface of the support arrangement defines a receiving chamber in which the drive part of the drive shaft is movably arranged.
    According to one embodiment of the invention, the lubrication system further comprises an oil supply channel fluidly connected to the oil sump and extending over at least part of the length of the drive shaft , the lubrication passages being fluidly connected to the oil supply channel.
    According to one embodiment of the invention, the oil supply channel opens into an end face of the drive shaft oriented towards the orbiting volute.
    According to one embodiment of the invention, the orbiting volute further comprises a hub portion in which the drive portion of the drive shaft is at least partially mounted, the scroll compressor further comprising a counterweight connected to the drive part and configured to at least partially balance the mass of the orbiting volute.
    According to one embodiment of the invention, the counterweight is movably arranged in the receiving chamber.
    According to one embodiment of the invention, the lubrication system further comprises at least one oil supply passage defined at least partially by the counterweight, the at least one oil supply passage being configured to supply oil the thrust bearing surface and the lubrication passages.
    According to one embodiment of the invention, the at least one oil supply passage is configured to supply the circumferential groove with oil.
    According to one embodiment of the invention, the counterweight has an inner surface of counterweight and an end surface of counterweight facing respectively the hub portion and the orbiting base plate, the inner surface of counterweight and the surface counterweight end defining at least partially the at least one oil supply passage.
    According to one embodiment of the invention, the counterweight comprises at least one oil supply bore or groove provided on the inner surface of the counterweight and the end surface of the counterweight and defining the at least one oil supply passage.
    According to one embodiment of the invention, the counterweight comprises an oil supply passage with an inlet formed at the interior surface of the counterweight and an outlet facing the circumferential groove. For example, the counterweight has at least one oil supply bore or groove with an inlet provided on the inner surface of the counterweight and an outlet facing the circumferential groove.
    According to an embodiment of the invention, the internal counterweight surface and the counterweight end surface are respectively essentially complementary to the respective contours of the hub part and the orbiting base plate.
    According to one embodiment of the invention, the at least one oil supply passage is fluidly connected to the oil supply channel.
    According to one embodiment of the invention, the lubrication system comprises an oil supply passage provided on, and for example formed inside, the drive part of the drive shaft and connected fluidly to the oil supply channel, the oil supply passage being configured to supply oil to the at least one oil supply passage.
    According to one embodiment of the invention, the oil supply passage has a first end opening into the end face of the drive shaft oriented towards the orbiting volute and a second end opening into an outer wall of the drive part of the drive shaft facing the counterweight.
    According to one embodiment of the invention, the support arrangement comprises a support frame and a thrust bearing plate fixed to the support frame, the thrust bearing plate comprising the thrust bearing surface and the holes circular reception, the lubrication passages being formed inside the thrust bearing plate.
    According to an embodiment of the invention, each circular receiving hole opens into the thrust bearing surface.
    According to one embodiment of the invention, the lubrication system further comprises a plurality of oil return passages provided on, and for example formed inside, the support arrangement, each return passage d oil has an oil inlet port opening into a respective hole of the circular receiving holes and an oil outlet port fluidly connected to the oil pan and configured to return part of the oil contained in the hole respective circular receiving holes to the oil pan. The presence of the oil return passages ensures oil circulation after lubrication of the anti-rotation device.
    According to one embodiment of the invention, the oil return passages are formed in the support frame.
    According to one embodiment of the invention, the oil outlet orifice of each oil return passage opens into the interior surface of the support arrangement.
    According to one embodiment of the invention, the oil inlet orifice of each oil return passage is provided on the thrust bearing plate, and each oil return passage has a return channel oil provided on the support frame and fluidly connected to the respective oil inlet port.
    According to an embodiment of the invention, each oil return passage further comprises a vertical hole provided on the support frame and configured to fluidly connect the respective oil inlet orifice to the return channel of respective oil.
    According to one embodiment of the invention, the support arrangement further comprises a main bearing configured to guide in rotation a guided part of the drive shaft, the lubrication system being configured to at least partially lubricate the bearing main with oil supplied from the oil pan.
    According to one embodiment of the invention, the lubrication system further comprises a lubrication hole provided on the drive shaft and fluidly connected to the oil supply channel, the lubrication hole opening into an outer wall of the guided part of the drive shaft and facing the main bearing.
    These advantages, as well as others, will appear on reading the following description taking into account the appended drawings representing, by way of nonlimiting example, an embodiment of a scroll compressor according to the invention.
    Brief description of the drawings
    The following detailed description of an embodiment of the invention is better understood when read in conjunction with the accompanying drawings, however, it being understood that the invention is not limited to the specific embodiment disclosed.
    Figure 1 is a longitudinal sectional view of a scroll compressor according to the invention.
    FIG. 2 is a view in partial longitudinal section of the scroll compressor according to FIG. 1.
    FIG. 3 is a partially sectioned perspective view of the scroll compressor according to FIG. 1.
    FIG. 4 is a cross-sectional view of the scroll compressor according to FIG. 1.
    FIG. 5 is a view in longitudinal section of a support arrangement of the scroll compressor according to FIG. 1.
    Figure 6 is a partially sectioned perspective view of the support arrangement according to Figure 4.
    Figure 7 is an enlarged view of details of Figure 4.
    Figure 8 shows the distribution of the load (due to centrifugal forces and gas forces from the compression process) acting between outer circumferential bearing surfaces of orbital discs of the anti-rotation device and inner circumferential bearing surfaces of holes of respective circular reception during a revolution of a drive shaft of the scroll compressor according to FIG. 1.
    Detailed description of the invention
    In the following description, the same elements are designated by the same references in the different embodiments.
    FIG. 1 describes a scroll compressor 1 according to an embodiment of the invention occupying a vertical position.
    The scroll compressor 1 comprises a hermetic casing 2 provided with a suction inlet 3 configured to supply the scroll compressor 1 with refrigerant to be compressed and with a discharge outlet 4 configured to discharge the compressed refrigerant.
    The scroll compressor 1 further comprises a support arrangement 5, also called casing, fixed to the hermetic casing 2, and a compression unit 6 disposed inside the hermetic casing 2 and supported by the support arrangement 5. L compression unit 6 is configured to compress the refrigerant supplied by the suction inlet 3. The compression unit 6 comprises a fixed scroll 7, which is fixed relative to the hermetic casing 2, and an orbiting scroll 8 supported by a thrust bearing surface 9 provided on the support arrangement 5 and in sliding contact with the latter.
    The fixed scroll 7 has a fixed base plate 11 having a lower face oriented towards the orbiting scroll 8 and an upper face opposite to the lower face of the fixed base plate 11. The fixed scroll 7 also has a fixed spiral winding 12 protruding from the underside of the fixed base plate 11 toward the orbiting scroll 8.
    The orbiting volute 8 comprises an orbiting base plate 13 having an upper face oriented towards the fixed volute 7, and a lower face opposite to the upper face of the orbiting base plate 13 and slidingly mounted on the thrust bearing surface 9. The orbiting scroll 8 also includes an orbiting spiral winding 14 projecting from the upper face of the orbiting base plate 13 towards the fixed scroll 7. The orbiting spiral winding 14 of the orbiting scroll 8 cooperates with the winding fixed spiral 12 of the fixed scroll 7 to form a plurality of compression chambers 15 therebetween. Each of the compression chambers 15 has a variable volume which decreases from the outside to the inside when the orbiting scroll 8 is driven to orbit relative to the fixed scroll 7.
    In addition, the scroll compressor 1 includes a drive shaft 16 configured to drive the orbiting scroll 8 in an orbital motion, and an electric drive motor 17, which can be a variable speed electric drive motor, coupled to the drive shaft 16 and configured to rotate the drive shaft 16 about an axis of rotation A.
    ίο
    The drive shaft 16 has, at its upper end, a drive part 18 which is offset from the longitudinal axis of the drive shaft 16 and which is partially mounted in a hub part 19 provided on the orbiting scroll 8. The drive part 18 is configured to cooperate with the hub part 19 so as to drive the orbiting scroll 8 according to orbital movements relative to the fixed scroll 7 when the electric drive motor 17 works.
    The drive shaft 16 also comprises an upper guided part 21 adjacent to the drive part 18 and a lower guided part 22 opposite the first guided part 21, and the scroll compressor 1 also comprises an upper main bearing 23 provided on the support arrangement 5 and configured to rotate the upper guided portion 21 of the drive shaft 16, and a lower main bearing 24 configured to rotate the lower guided portion 22 of the drive shaft drive 16. The scroll compressor 1 also comprises an orbiting volute hub bearing 25 provided on the orbiting volute 8 and arranged to cooperate with the driving part 18 of the driving shaft 16.
    In addition, the scroll compressor has a counterweight 26 fixed to the drive part 18 and configured to at least partially balance the mass of the orbiting scroll 8. In particular, the support arrangement 5 defines a receiving chamber 27 located above the upper main bearing 23 and in which the hub part 19, the drive part 18 and the counterweight 26 are movably arranged.
    The scroll compressor 1 also comprises an anti-rotation device configured to prevent the rotation of the orbiting volute 8 relative to the fixed volute 7 and to the support arrangement 5. In particular, the anti-rotation device comprises:
    - A plurality of orbital discs 28 respectively arranged in circular receiving holes 29 formed in the support arrangement 5 and opening into the thrust bearing surface 9, each orbital disc 28 being provided with an eccentric hole 30 and an outer circumferential bearing surface 31 configured to cooperate with an inner circumferential bearing surface 32 provided on the respective circular receiving hole 29, and
    - A plurality of pins 33 each comprising a first end portion fixed in a non-rotatable manner to the orbiting base plate 13 and a second end portion rotatably mounted in the eccentric hole 30 of the respective orbital disc 28 and cooperating with that -this.
    According to the embodiment shown in the figures, the anti-rotation device comprises three orbital discs 28 and three pins 33, the orbital discs 28 being angularly offset, and in particular angularly offset regularly, relative to the axis of rotation A of the drive shaft 16.
    The scroll compressor 1 further comprises a lubrication system configured to at least partially lubricate the inner and outer circumferential bearing surfaces 31, 32, the sliding surface between the orbital discs 28 and the bottom of the respective receiving holes 29, thus that the sliding surfaces between eccentric holes 30 and pins 33 with oil supplied from an oil pan 50 defined by the hermetic casing 2.
    The lubrication system comprises an oil supply channel 34 formed in the drive shaft 16 and extending over the entire length of the drive shaft 16. The oil supply channel 34 is configured to be supplied with oil from the oil pan 50. According to the embodiment shown in the figures, the oil supply channel 34 opens into an end face 35 of the drive shaft 16 oriented towards the orbiting scroll 8.
    The lubrication system further comprises an oil supply passage 36 provided on the drive part 18 of the drive shaft 16 and fluidly connected to the oil supply channel 34. According to the embodiment shown in the figures, the oil supply passage 36 has a first end opening into the end face 35 of the drive shaft 16 and a second end opening into an outer wall of the drive part 18 forming facing the counterweight 26 in the region of the lower end of the hub part 19.
    The lubrication system also includes an oil supply passage 37 defined by the counterweight 26 and fluidly connected to the oil supply passage 36. According to the embodiment shown in the figures, the counterweight 26 has an inner surface of counterweight 26.1 and a counterweight end surface 26.2 facing respectively the hub portion 19 and the orbiting base plate 13, and the inner counterweight surface 26.1 and the counterweight end surface 26.2 define the passage of oil supply 37. For example, the counterweight 26 may include an oil supply groove provided on the interior surface of the counterweight 26.1 and on the counterweight end surface 26.2 and defining the oil supply passage. Advantageously, the internal counterweight surface 26.1 and the counterweight end surface 26.2 are respectively essentially complementary to the respective contours of the hub part 19 and the orbiting base plate 13.
    In addition, the lubrication system has a circumferential groove 38 provided on an inner surface 39 of the support arrangement 5, and a plurality of lubrication passages 41 formed inside the support arrangement 5 and fluidly connected to the circumferential groove 38. The counterweight 26 may further comprise an oil supply passage 51 (see FIG. 4) with an inlet 51.1 formed at the interior surface of the counterweight 26.1 and an outlet 51.2 facing the circumferential groove 38 .
    According to the embodiment shown in the figures, each lubrication passage 41 extends radially with respect to the axis of rotation A of the drive shaft 16, and extends below the bearing surface of stop 9.
    In particular, each lubrication passage 41 has an oil inlet opening 41.1 opening into the circumferential groove 38 and an oil outlet opening 41.2 opening into the inner circumferential bearing surface 32 of a respective circular receiving hole 29 and at a predetermined position essentially situated in a respective plane containing the axis of rotation A of the drive shaft and a center C of the respective circular receiving hole 29 and positioned between the axis of rotation A of the shaft drive 16 and the center of the respective circular receiving hole.
    The lubrication system further comprises a plurality of oil return passages 42 formed inside the support arrangement 5. Each oil return passage 42 comprises an oil inlet orifice 42.1 opening into a respective hole of the circular receiving holes 29, and for example in the lower surface of the respective circular receiving hole 29, and an oil outlet orifice 42.2 fluidly connected to the oil pan 50 and configured to return part of the oil contained in the respective hole of the circular receiving holes 29 towards the oil pan 50. According to the embodiment shown in the figures, the oil outlet orifice 42.2 of each oil return passage 42 opens out in the inner surface 39 of the support arrangement 5 and therefore in the receiving chamber 27. Advantageously, the support arrangement 5 comprises oil return holes opening into the chamber d reception 27 and configured to return part of the oil, ejected from the oil return passage 42 in the reception chamber 27, to the oil sump 50.
    According to the embodiment shown in the figures, the support arrangement 5 comprises a support frame 5.1 and a thrust bearing plate
    5.2 attached to the support frame 5.1. Advantageously, the thrust bearing plate 5.2 comprises the thrust bearing surface 9, and the circular receiving holes 29 and the lubrication passages 41 are formed in the thrust bearing plate 5.2. In addition, according to said embodiment, the oil inlet orifice 42.1 of each oil return passage 42 is provided on the thrust bearing plate 5.2, and each oil return passage 42 comprises a oil return channel 43 provided on the support frame 5.1 and fluidly connected to the respective oil inlet orifice 42.1. Each oil return passage 42 may further include a vertical hole 44 provided on the support frame 5.1 and configured to fluidly connect the respective oil inlet orifice 42.1 to the respective oil return channel 43.
    In addition, according to the embodiment shown in the figures, the lubrication system is also configured to at least partially lubricate the upper and lower main bearings 23, 24 and the orbiting scroll hub bearing 25 with oil supplied to from the oil pan 50. Therefore, Lubrication further comprises:
    a first lubrication hole 45 provided on the drive shaft 16 and fluidly connected to the oil supply channel 34, the first lubrication hole 45 opening into an outer wall of the upper guided part 21 of the shaft d 'drive 16 and facing the upper main bearing 23,
    a second lubrication hole 46 provided on the drive shaft 16 and fluidly connected to the oil supply channel 34, the second lubrication hole 46 opening into an outer wall of the lower guided part 22 of the shaft d 'drive 16 and facing the lower main bearing 24, and
    a third lubrication hole 47 provided on the drive shaft 16 and fluidly connected to the oil supply channel 34, the third lubrication hole 47 opening into an outer wall of the drive part 18 of the shaft 16 and facing the orbiting volute hub bearing 25.
    When the electric drive motor 17 is running and the drive shaft 16 rotates about its axis of rotation A, the oil coming from the oil pan 50 rises in the oil supply channel 34 of the shaft drive 16 by centrifugal effect and reaches the end face 35 of the drive shaft 16 after lubrication of the lower main bearing 24, the upper main bearing 23 and the orbiting volute hub bearing 25. At least part oil having reached the end face 35 of the drive shaft 16 is discharged to the oil supply passage 37 via the oil supply passage 36 provided on the part drive 18. Then, by centrifugal effect, the oil flows through the oil supply passage 37 and is directed towards the thrust bearing surface 9 and the lubrication passages 41 in order to at least partially lubricate the surfaces d e inner and outer circumferential bearing 31, 32 and the thrust bearing surface 9. In addition to the oil from the oil supply passage 36, also the oil exiting from the lower end of the hub bearing orbiting scroll 25 will enter the oil supply passage 37 by centrifugal effect. After lubrication of the inner and outer circumferential bearing surfaces 31, 32 and the thrust bearing surface 9, the oil is returned to the oil pan 50 via the oil return passages 42 and the holes oil return.
    Figure 7 shows in particular the fact that an orthogonal projection of the predetermined position of the oil outlet opening 41.2 of each lubrication passage 41 on a projection plane parallel to the thrust bearing surface 9 could be located on a circular arc having an angle a between 0 and 20 °, and for example between 0 and 10 °, having a center C1 centered on the center C of the respective circular receiving hole 29, and being defined so that the plane respective P containing the axis of rotation A of the drive shaft 16 and the center C of the respective circular receiving hole 29 forms a bisecting plane of the angle a of said circular arc, said circular arc being located between l axis of rotation A of the drive shaft 16 and the center C of the respective circular receiving hole 29.
    Obviously, the invention is not limited to the embodiment described above by way of nonlimiting example, but on the contrary it encompasses all of its embodiments. For example, the support arrangement may include a one-piece support frame having the thrust bearing surface 9.
    权利要求:
    Claims (15)
    [1" id="c-fr-0001]
    1. Spiral compressor (1) comprising:
    - a fixed scroll (7) comprising a fixed base plate (11) and a fixed spiral winding (12),
    - an orbiting scroll (8) comprising an orbiting base plate (13) and an orbiting spiral winding (14), the fixed spiral winding (12) and the orbiting spiral winding (14) forming a plurality of chambers compression (15),
    - a drive shaft (16) comprising a drive part (18) configured to drive the orbiting scroll (8) in an orbital movement, the drive shaft (16) being able to rotate about an axis of rotation (AT),
    a support arrangement (5) comprising a thrust bearing surface (9) on which the orbiting scroll (8) is slidably mounted,
    - an anti-rotation device configured to prevent rotation of the orbiting volute (8) relative to the fixed volute (7) and to the support arrangement (5), the anti-rotation device comprising:
    - a plurality of orbital discs (28) arranged respectively in circular receiving holes (29) provided on the support arrangement (5), each orbital disc (28) being provided with an eccentric hole (30) and an outer circumferential bearing surface (31) configured to cooperate with an inner circumferential bearing surface (32) provided on the respective circular receiving hole (29), and
    - a plurality of pins (33) each comprising a first end part fixed to the orbiting base plate (13) and a second end part rotatably mounted in the eccentric hole (30) of a respective orbital disc ( 28),
    - an oil pan (50), and
    - a lubrication system configured to at least partially lubricate the inner and outer circumferential bearing surfaces (32, 31) with oil supplied from the oil pan (50), the lubrication system comprising a plurality of passages lubrication (41) formed inside the support arrangement (5), each lubrication passage (41) having an oil outlet opening (41.2) opening into the inner circumferential bearing surface (32) d 'a respective circular receiving hole (29) and at a predetermined position where a low load occurs during rotation of the drive shaft about its axis of rotation.
    [2" id="c-fr-0002]
    2. scroll compressor (1) according to claim 1, in which an orthogonal projection of the predetermined position of the oil outlet opening (41.2) of each lubrication passage (41) on a projection plane parallel to the thrust bearing surface (9) is located on an arc of a circle which has an angle (a) of between 0 and 20 °, which has a center (C1) centered on a center (C) of the respective circular receiving hole ( 29), and which is defined so that a respective plane containing the axis of rotation (A) of the drive shaft (16) and the center (C) of the respective circular receiving hole (29) forms a bisector plane of the angle of said arc of a circle.
    [3" id="c-fr-0003]
    3. scroll compressor (1) according to claim 1, wherein the predetermined position of the oil outlet opening (41.2) of each lubrication passage (41) is essentially located in a respective plane containing the axis of rotation (A) of the drive shaft (16) and a center (C) of the respective circular receiving hole (29).
    [4" id="c-fr-0004]
    4. scroll compressor (1) according to any one of claims 1 to 3, wherein each lubrication passage (41) extends radially relative to the axis of rotation (A) of the drive shaft (16).
    [5" id="c-fr-0005]
    5. scroll compressor (1) according to any one of claims 1 to 4, wherein the lubrication system further comprises a circumferential groove (38) provided on an inner surface (39) of the support arrangement (5 ), the circumferential groove (38) being configured to supply oil to the lubrication passages (41).
    [6" id="c-fr-0006]
    6. scroll compressor (1) according to any one of claims 1 to 5, wherein the lubrication system further comprises an oil supply channel (34) fluidly connected to the oil pan (50) and s extending over at least part of the length of the drive shaft (16), the lubrication passages (41) being fluidly connected to the oil supply channel (34).
    [7" id="c-fr-0007]
    7. scroll compressor (1) according to any one of claims 1 to 6, wherein the orbiting scroll (8) further comprises a hub portion (19) in which the drive portion (18) of the drive shaft (16) is mounted at least partially, the scroll compressor (1) further comprising a counterweight (26) connected to the drive portion (18) and configured to at least partially balance the mass of the scroll orbiting (8).
    [8" id="c-fr-0008]
    8. scroll compressor (1) according to claim 7, wherein the lubrication system further comprises at least one oil supply passage (37) defined at least partially by the counterweight (26), the at least one oil supply passage (37) being configured to supply oil to the thrust bearing surface (9) and the lubrication passages (41).
    [9" id="c-fr-0009]
    The scroll compressor (1) according to claim 8, wherein the counterweight (26) has an inner counterweight surface (26.1) and a counterweight end surface (26.2) facing the hub portion (19, respectively). ) and to the orbiting base plate (13), the interior counterweight surface (26.1) and the counterweight end surface (26.2) at least partially defining the at least one oil supply passage (37).
    [10" id="c-fr-0010]
    10. scroll compressor (1) according to claims 5 and 9, wherein the counterweight (26) comprises an oil supply passage (51) with an inlet (51.1) formed at the interior surface of the counterweight (26.1 ) and an outlet (51.2) facing the circumferential groove (38).
    [11" id="c-fr-0011]
    11. scroll compressor (1) according to claim 8 or 9 when dependent on claim 4, wherein the lubrication system comprises an oil supply passage (36) provided on the drive part (18 ) of the drive shaft (16) and fluidly connected to the oil supply channel (34), the oil supply passage (36) being configured to supply oil with the at least one passage for power supply (37).
    [12" id="c-fr-0012]
    12. scroll compressor (1) according to any one of claims 1 to 11, wherein the support arrangement (5) comprises a support frame (5.1) and a thrust bearing plate (5.2) fixed to the frame support (5.1), the thrust bearing plate (5.2) comprising the thrust bearing surface (9) and the circular receiving holes (29), the lubrication passages (41) being formed in the bearing plate stop (5.2).
    [13" id="c-fr-0013]
    13. scroll compressor (1) according to any one of claims 1 to 12, wherein the lubrication system further comprises a plurality of oil return passages (42) provided on the support arrangement (5) , each oil return passage (42) comprising an oil inlet orifice (42.1) opening into a respective hole in the circular receiving holes (29) and an oil outlet orifice (42.2) fluidly connected to the oil pan (50) and configured to return part of the oil contained in the respective hole of the circular receiving holes (29) to the oil pan (50).
    [14" id="c-fr-0014]
    14. A scroll compressor (1) according to claim 13, wherein the oil return passages (42) are formed in the support frame (5.1).
    [15" id="c-fr-0015]
    15. scroll compressor (1) according to any one of claims 1 to 14, wherein the support arrangement (5) further comprises a main bearing (23) configured to guide in rotation a guided part (21) of the drive shaft (16), the lubrication system being configured to at least partially lubricate the main bearing (23) with oil supplied from the oil pan (50).
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    同族专利:
    公开号 | 公开日
    US20180216616A1|2018-08-02|
    FR3062430B1|2021-05-21|
    CN108361193B|2019-09-03|
    CN108361193A|2018-08-03|
    US10746174B2|2020-08-18|
    DE102018100162A1|2018-08-02|
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    WO2015079711A1|2013-11-29|2015-06-04|ダイキン工業株式会社|Scroll compressor|WO2020083312A1|2018-10-23|2020-04-30|艾默生环境优化技术有限公司|Counterweight, counterweight assembly and scroll compressor|
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    CN112145412A|2019-06-28|2020-12-29|丹佛斯商用压缩机公司|Scroll compressor provided with a track disc lubrication system|
    法律状态:
    2017-12-29| PLFP| Fee payment|Year of fee payment: 2 |
    2018-08-03| PLSC| Publication of the preliminary search report|Effective date: 20180803 |
    2019-12-30| PLFP| Fee payment|Year of fee payment: 4 |
    2020-12-18| PLFP| Fee payment|Year of fee payment: 5 |
    2021-12-24| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1750672A|FR3062430B1|2017-01-27|2017-01-27|SPIRAL COMPRESSOR WITH ORBITAL DISCS LUBRICATION SYSTEM|
    FR1750672|2017-01-27|FR1750672A| FR3062430B1|2017-01-27|2017-01-27|SPIRAL COMPRESSOR WITH ORBITAL DISCS LUBRICATION SYSTEM|
    US15/852,200| US10746174B2|2017-01-27|2017-12-22|Scroll compressor with an orbital disc lubrication system|
    CN201810007997.1A| CN108361193B|2017-01-27|2018-01-04|Screw compressor|
    DE102018100162.2A| DE102018100162A1|2017-01-27|2018-01-05|Scroll compressor with a circular disk lubrication system|
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