WO2016104336A1 - 電動スクロール圧縮機 - Google Patents

電動スクロール圧縮機 Download PDF

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Publication number
WO2016104336A1
WO2016104336A1 PCT/JP2015/085398 JP2015085398W WO2016104336A1 WO 2016104336 A1 WO2016104336 A1 WO 2016104336A1 JP 2015085398 W JP2015085398 W JP 2015085398W WO 2016104336 A1 WO2016104336 A1 WO 2016104336A1
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WO
WIPO (PCT)
Prior art keywords
motor
end plate
scroll
housing member
electric
Prior art date
Application number
PCT/JP2015/085398
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English (en)
French (fr)
Japanese (ja)
Inventor
裕展 出口
Original Assignee
株式会社ヴァレオジャパン
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社ヴァレオジャパン filed Critical 株式会社ヴァレオジャパン
Priority to EP15872905.3A priority Critical patent/EP3239526B1/de
Priority to JP2016566179A priority patent/JP6587636B2/ja
Priority to CN201580068389.6A priority patent/CN107002676B/zh
Publication of WO2016104336A1 publication Critical patent/WO2016104336A1/ja

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    • 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
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • 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
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/06—Silencing
    • F04C29/063—Sound absorbing materials

Definitions

  • the present invention relates to an electric scroll compressor used for a refrigeration cycle of a vehicle air conditioner.
  • an electric scroll compressor has a known configuration shown in Patent Document 1 below.
  • This conventional electric scroll compressor has a discharge port, a discharge housing that houses a compression portion (compression mechanism) configured by disposing a fixed scroll and a movable scroll, a suction housing having a suction port, and a discharge An intermediate housing that is interposed between the housing and the suction housing and accommodates the electric motor together with the suction housing.
  • the intermediate housing is formed integrally with a motor fixing portion that accommodates and fixes a part of the electric motor and a discharge housing side of the motor fixing portion, and a bearing support portion (end plate) that supports the drive shaft via a bearing. And have.
  • a compression mechanism used in this conventional electric scroll compressor is known per se, and a fixed scroll having a substrate and a spiral wall standing upright from the substrate, and a substrate and the substrate disposed opposite to the fixed scroll. And a pair of scrolls, each of which is combined with each other, and an eccentric provided on a drive shaft that is driven to rotate by an electric motor housed in the housing. By engaging with the shaft and turning (revolving motion), the compression chamber formed between the spiral walls of both scrolls is moved to the center while reducing the volume, and the fluid to be compressed is compressed.
  • a rotation prevention mechanism for preventing the rotation of the orbiting scroll is provided.
  • This anti-rotation mechanism Oldham coupling, pin & ring coupling, ball coupling or the like is used between the substrate (bottom plate) of the swing scroll (movable scroll) and the end plate of the intermediate housing.
  • the orbiting scroll can be swung while being supported by the end plate of the intermediate housing via the rotation prevention mechanism, or can be swung while being directly supported by the end plate of the intermediate housing. ing.
  • the present invention can suppress the deformation of the end plate, improve the support surface accuracy of the orbiting scroll, enable the orbiting scroll to turn with high accuracy, and improve the performance and reliability of the compressor. It is an object to provide an electric scroll compressor.
  • the present invention includes a compression mechanism housing member 5 in which a compression mechanism 3 formed by combining a fixed scroll 11 and a swing scroll 21 is housed, and a motor housing housing member in which an electric motor 4 that drives the compression mechanism 3 is housed. 6 and an inverter accommodating housing member 7 in which an inverter device for driving and controlling the electric motor 4 is accommodated.
  • the motor housing housing member 6 includes a cylindrical motor fixing portion 12 to which the stator 16 of the electric motor 4 is fixed by interference fit, and an end surface on the side of the orbiting scroll that serves as a support surface for the orbiting scroll 21. And an end plate 13 having a low rigidity portion 14 connecting the motor fixing portion 12 and the end plate 13.
  • the low-rigidity portion 14 is formed with lower rigidity than the motor fixing portion 12 and the end plate 13.
  • the electric scroll compressor according to the present invention when the stator of the electric motor is fixed to the motor fixing portion of the motor housing housing member with an interference fit, and the motor fixing portion is expanded and deformed by the stator, the motor fixing portion and the end plate Also, the low-rigidity low-rigidity part is elastically deformed along with the diameter expansion deformation of the motor fixing part. The stress is smaller than when no low rigidity portion is provided.
  • the electric scroll compressor according to the present invention can suppress the deformation of the end plate due to the diameter expansion deformation of the motor fixing portion, and can improve the accuracy of the support surface that supports the turning motion of the orbiting scroll. Therefore, the swinging scroll can be turned with high accuracy, and the performance and reliability of the compressor can be improved.
  • FIG. 2A is a rear view of the orbiting scroll
  • FIG. 2B is a cross-sectional view of the orbiting scroll cut along the line A1-A1 of FIG. 2A
  • FIG. 3A is a view showing a motor housing housing member integrated with an end plate
  • FIG. 3A is a view of the end plate viewed from the motor fixing portion side in the axial direction
  • FIG. 3B is a view showing the end plate on the compressor side. It is the figure seen from the axial direction.
  • FIG. 2 is a cross-sectional view showing a motor housing housing member cut along line A2-A2 of FIG.
  • An electric scroll compressor 1 shown in FIG. 1 is an electric compressor suitable for a refrigeration cycle using a refrigerant as a working fluid.
  • a compression mechanism 3 is disposed on the right side of the housing 2 made of an aluminum alloy in the drawing, and an electric motor 4 that drives the compression mechanism 3 is disposed in the center of the housing 2.
  • An inverter device (not shown) is disposed on the left side of the housing 2 in the drawing. In FIG. 1, the left side in the figure is the front of the compressor, and the right side in the figure is the rear of the compressor.
  • the housing 2 includes a compression mechanism housing member 5 in which the compression mechanism 3 is housed, a motor housing housing member 6 in which the electric motor 4 that drives the compression mechanism 3 is housed, and an inverter device (not shown) that drives and controls the electric motor 4. And an inverter housing member 7 for housing the housing.
  • the adjacent compression mechanism housing member 5 and motor housing member 6 are positioned by positioning pins (not shown) and fixed in the axial direction (X-axis direction in FIG. 1) by fastening bolts 8.
  • Adjacent motor housing housing member 6 and inverter housing housing member 7 are positioned by positioning pins (not shown) and fixed in the axial direction by fastening bolts 10.
  • the compression mechanism housing member 5 accommodates a fixed scroll 11 of the compression mechanism 3 to be described later, and has a bottomed cylindrical shape with the side facing the motor housing housing member 6 open.
  • the motor housing housing member 6 includes a cylindrical motor fixing portion 12 to which the electric motor 4 is fixed, an end plate 13 located on the side facing the compression mechanism housing housing member 5, a motor fixing portion 12 and an end plate 13. And a low-rigidity portion 14 that connects between the axial one end side of the motor fixing portion 12 and the radially outer end side of the end plate 13.
  • the motor fixing portion 12, the low rigidity portion 14, and the end plate 13 are integrally formed, and the low rigidity portion 14 is formed to have a lower rigidity than the motor fixing portion 12 and the end plate 13. .
  • the low rigidity portion 14 is formed over the entire circumference in the circumferential direction of the motor housing member 6, and a constricted portion 15 formed by denting the space between the motor fixing portion 12 and the end plate 13 inward in the radial direction.
  • the low-rigidity portion 14 is fixed when the stator 16 of the electric motor 4 is fixed to the motor fixing portion 12 with an interference fit (press-fit, shrink fitting, etc.), and the motor fixing portion 12 is deformed to expand its diameter.
  • the elastic deformation of the motor fixing portion 12 is caused by the deformation of the motor fixing portion 12, the deformation of the motor fixing portion 12 is absorbed, and the deformation of the end plate 13 due to the expansion of the diameter of the motor fixing portion 12 is suppressed. .
  • the bolt housing portion 17 is formed in the low rigidity portion 14 so as to bulge outward in the radial direction.
  • the constricted portion 15 is radially inward so that the recess amount d is about 0.05 D from the outer surface of the motor fixing portion 12.
  • the thickness of the low-rigidity portion 14 is t, the dent amount d with respect to the outer surface of the motor fixing portion 12 is recessed inward in the radial direction so as to be t / 2 or more. Yes.
  • the constricted portion 15 is not limited to such an example of the dent amount, and an optimum dent amount is determined in consideration of the diameter expansion deformation amount of the motor fixing portion 12 and the like.
  • the end plate 13 is integrally formed with a shaft support portion 20 that supports one end side of the drive shaft 18, and supports the axial load of the swing scroll 21 of the compression mechanism 3, which will be described later, on the end surface 22 on the swing scroll side. Can be done.
  • the inverter accommodating housing member 7 is integrally formed with an inverter accommodating cylindrical portion 23 formed in a cylindrical shape and an end plate 24 positioned on the side facing the motor accommodating housing member 6.
  • the end plate 24 is integrally formed with a shaft support 25 that supports the other end of the drive shaft 18.
  • a support shaft 20 of the end plate 13 of the motor housing housing member 6 is supported via a bearing 26 so that one end side of the drive shaft 18 can rotate. Further, the other end side of the drive shaft 18 is supported by the shaft support portion 25 of the end plate 24 of the inverter housing member 7 via a bearing 27 so as to be rotatable.
  • the interior of the housing 2 includes a compression mechanism accommodating portion 28 for accommodating the compression mechanism 3 and a motor accommodating portion for accommodating the electric motor 4 by the end plate 13 of the motor accommodating housing member 6 and the end plate 24 of the inverter accommodating housing member 7.
  • 30 and an inverter accommodating portion 31 that accommodates the inverter device are partitioned in order from the rear side.
  • the inverter accommodating portion 31 is closed by fixing the lid 32 to the opening of the inverter accommodating housing member 7 with a bolt or the like (not shown).
  • the compression mechanism 3 is of a scroll type having a fixed scroll 11 and an orbiting scroll 21 disposed opposite thereto.
  • the fixed scroll 11 is allowed to move in the radial direction with respect to the housing 2 (the compression mechanism housing member 5) while being allowed to move in the axial direction by a positioning pin 33 described later.
  • the fixed scroll 11 includes a disk-shaped substrate 11a, a cylindrical outer peripheral wall 11b which is provided over the entire periphery along the outer edge of the substrate 11a and is erected forward, and an outer periphery thereof.
  • a spiral spiral wall 11c extending forward from the substrate 11a on the inner side of the wall 11b.
  • the orbiting scroll 21 is composed of a disc-shaped substrate 21a and a spiral-shaped spiral wall 21c erected rearward from the substrate 21a. ing.
  • a radial bearing 35 is accommodated in a fitting recess 34 provided in the center of the back surface of the substrate 21 a, and an eccentric shaft 36 formed at the rear end portion of the drive shaft 18 via the radial bearing 35. It is supported by.
  • the orbiting scroll 21 can revolve around the axis of the drive shaft 18 in accordance with the amount of eccentricity between the axis of the drive shaft 18 and the axis of the eccentric shaft 36.
  • the fixed scroll 11 and the orbiting scroll 21 mesh with the spiral walls 11c and 21c of each other, and the space surrounded by the substrate 11a and the spiral wall 11c of the fixed scroll 11 and the substrate 21a and the spiral wall 21c of the orbiting scroll 21.
  • a compression chamber 37 is formed.
  • the fixed scroll 11 and the end plate 13 of the motor housing housing member 6 are positioned in the radial direction by positioning pins 33.
  • the fixed scroll 11 is directly assembled to the end plate 13 of the motor housing housing member 6, and the axial load of the orbiting scroll 21 is the end surface on the orbiting scroll side of the end plate 13.
  • the present invention is not limited to this, and a thin plate-like annular thrust trace (not shown) is interposed between the outer peripheral wall 11b of the fixed scroll 11 and the end plate 13, The fixed scroll 11 and the end plate 13 may be abutted via a thrust trace, and the axial load of the orbiting scroll 21 may be supported by the end plate 13 via the thrust trace.
  • the shaft support portion 20 formed integrally with the end plate 13 of the motor housing housing member 6 includes a weight housing portion 38 that is an annular recess that opens to the compressor housing portion 28 side, and an annular recess that opens to the motor housing portion 30 side.
  • a bearing housing portion 40, and a through hole 41 that penetrates the weight housing portion 38 and the bearing housing portion 40 along the drive shaft 18 are formed.
  • the weight accommodating portion 38 accommodates a balance weight 42 that rotates integrally with the drive shaft 18.
  • the bearing accommodating portion 40 accommodates a bearing 26 that rotatably supports one end side of the drive shaft 18.
  • the drive shaft 18 is accommodated in the through hole 41 with a sufficient gap.
  • a suction chamber 45 is formed between the outer peripheral wall 11b of the fixed scroll 11 and the outermost peripheral portion of the spiral wall 21c of the orbiting scroll 21 to suck in a refrigerant introduced from a suction port 43, which will be described later, via a suction passage 44.
  • a discharge chamber 47 is formed on the rear side of the fixed scroll 11 in the housing 2 and between the fixed scroll 11 and the rear end wall 46 of the compression mechanism housing member 5. In the discharge chamber 47, the refrigerant gas compressed in the compression chamber 37 is discharged through a discharge hole 48 formed in the approximate center of the fixed scroll 11. The refrigerant gas discharged into the discharge chamber 47 is pumped to the external refrigerant circuit via the discharge port 50.
  • the stator 16 and the rotor 51 constituting the electric motor 4 are accommodated in the motor fixing portion 12 formed in the front part of the motor accommodating housing member 6 from the end plate 13.
  • the stator 16 is composed of a cylindrical iron core and a coil wound around the iron core, and is fixed to the inner surface of the housing 2 (motor housing housing member 6).
  • the rotor 51 made of a magnet is fixed to the outer peripheral side of the drive shaft 18 and is rotatably accommodated inside the stator 16. The rotor 51 is rotated integrally with the drive shaft 18 by the rotating magnetic force formed by the stator 16.
  • the inverter device housed in the inverter housing member 7 is electrically connected to the stator 16 via a terminal (airtight terminal) attached to a through hole (not shown) formed in the end plate 24, and is connected to the electric motor 4. In contrast, power is supplied.
  • a suction port 43 for sucking refrigerant gas into the motor housing 30 is formed on the side surface of the housing 2 (motor housing member 6).
  • the refrigerant that has flowed into the motor housing portion 30 from the suction port 43 is guided to the suction chamber 45 via the suction path 44.
  • the suction path 44 is formed between the stator 16 and the housing 2 (motor housing housing member 6), the hole 52 formed in the end plate 13, and the fixed scroll 11 and the housing 2. It consists of gaps.
  • a stator contact portion 53 that contacts the stator 16 and a stator non-contact portion 54 that does not contact the stator 16 are alternately arranged on the inner peripheral surface of the motor housing member 6 in the circumferential direction. Is formed. And the outer peripheral part of the stator 16 is being fixed to the stator contact part 53 by interference fitting (press fitting, shrink fitting, etc.). Thereby, the stator 16 is fixed to the housing 2 (motor housing member 6). A gap between the stator 16 constituting a part of the suction path 44 and the housing 2 (the motor housing housing member 6) is formed by a gap between the inner wall of the stator non-contact portion 54 and the outer peripheral portion of the stator 16. Has been.
  • stator contact portion 53 and the stator non-contact portion 54 that form a pair are formed at six locations in the circumferential direction at an interval of about 60 degrees as a central angle.
  • the stator contact portion 53 is formed so that its circumferential width is relatively smaller than the circumferential width of the stator non-contact portion 54 (the stator contact portion 53 has a center angle of about 20 degrees, The width of the non-contact portion 54 is formed at a central angle of about 40 degrees).
  • the end plate 13 of the motor housing member 6 is formed with a hole 52 that allows the motor housing 30 and the compression mechanism housing 28 to communicate with each other.
  • the hole 52 guides the refrigerant flowing from the suction port 43 into the motor housing 30 to the suction chamber 45.
  • the hole 52 is formed in the end plate 13 so as to be positioned radially outside the pin 55 of the rotation prevention mechanism to be described later, and on the radially inner side of the five stator contact portions 53 and at five locations.
  • a plurality of stator contact portions 53 are formed so as to correspond to the five stator contact portions 53 at positions substantially overlapping with the stator contact portions 53 in the circumferential direction (positions having substantially the same phase).
  • the holes 52 are formed so as to correspond only to the five stator contact portions 53 of the six stator contact portions 53 and are formed as long holes extending in the circumferential direction of the end plate 13. Has been.
  • bolt holes 56 through which the shaft portion 10a of the fastening bolt 10 is inserted are formed.
  • the fastening bolt 10 in which the shaft portion 10 a is inserted into the bolt hole 56 is used for fixing the motor housing housing member 6 and the inverter housing housing member 7.
  • the shaft portion 10a of the fastening bolt 10 is engaged with a bolt housing portion 17 partially formed in the low-rigidity portion 14 with a gap.
  • the bolt housing portion 17 is formed at a location where the shaft portion 10a of the fastening bolt 10 of the low-rigidity portion 14 is inserted, and bulges outward in the radial direction of the constricted portion 15 of the low-rigidity portion 14 to tighten the fastening bolt 10.
  • the shaft portion 10a of the fastening bolt 10 is protected so that the shaft portion 10a of the fastening bolt 10 is not exposed to the outside air.
  • the bolt accommodating portions 17 are formed in the same number as the fastening bolts 10 and have a substantially arc shape in cross section, and enhance the rigidity of the low rigidity portion 14 in the torsional direction.
  • Reinforcing ribs 57 that reinforce the end plate 13 are integrally extended in a radial direction from the shaft support portion 20 to the inner peripheral surface of the low-rigidity portion 14 on the surface of the end plate 13 on the motor accommodating portion 30 side.
  • the reinforcing rib 57 is located at a position corresponding to the axial direction of the stator non-contact portion 54, that is, at a position that substantially overlaps the stator non-contact portion 54 in the circumferential direction (at a position that is substantially in phase), and substantially the same in the circumferential direction.
  • a plurality of intervals are formed (six locations are provided in the circumferential direction in accordance with the number of pins 55 described later). Therefore, the reinforcing rib 57 is formed so that the stator contact portion 53 does not overlap the circumferential position (so as not to have the same phase), and stress due to deformation of the stator contact portion 53 is not directly transmitted. .
  • the positioning pins 33 for positioning the fixed scroll 11 with respect to the end plate 13 are provided on the virtual circle 58 including the respective holes 52 and formed on the end plate 13. It is fixed by press-fitting into the pin mounting hole 60.
  • the compression chamber 37 of the compression mechanism 3 moves while gradually reducing the volume from the outer peripheral side of the spiral wall 11c of the fixed scroll 11 and the spiral wall 21c of the swing scroll 21 to the center side by the revolving motion of the swing scroll 21. .
  • the refrigerant gas sucked into the compression chamber 37 from the suction chamber 45 is compressed as the swinging scroll 21 revolves.
  • the compressed refrigerant gas is discharged into the discharge chamber 47 through the discharge hole 48 formed in the substrate 11 a of the fixed scroll 11, and is sent from the discharge chamber 47 to the external refrigerant circuit through the discharge port 50. .
  • the electric scroll compressor 1 since the rotation force is generated in the swing scroll 21 as the drive shaft 18 rotates, the swing scroll 21 is driven in a state where the rotation of the swing scroll 21 is restricted. It is necessary to revolve around the axis of the shaft 18. For this reason, the electric scroll compressor 1 according to the present embodiment is provided with a rotation prevention mechanism that engages the pin 55 between the substrate 21a of the swing scroll 21 and the end plate 13 of the motor housing housing member 6. Yes.
  • a pin & ring coupling is adopted as the rotation preventing mechanism, and a plurality of pins 55 arranged in the circumferential direction and a plurality of ring members 61 engaged with these pins 55, respectively. And a plurality of cylindrical recesses 62 for accommodating the ring member 61.
  • the cylindrical recess 62 is configured by forming a recess having a circular cross section on the back surface (surface facing the end plate 13) of the substrate 21 a of the orbiting scroll 21. Thus, they are formed at equal intervals (in this example, at intervals of 60 degrees) around the fitting recess 34 of the orbiting scroll 21.
  • the ring member 61 has an annular shape made of iron, has an outer diameter smaller than the inner diameter of the cylindrical recess 62, and is loosely fitted into the cylindrical recess 62.
  • the ring member 61 is formed such that the axial width is substantially equal to the axial width of the cylindrical recess 62 or smaller than the axial width of the cylindrical recess 62.
  • the pin 55 is formed in an iron column shape, is formed to have an outer diameter smaller than the inner diameter of the ring member 61, and faces the swing scroll 21 around the weight accommodating portion 38 of the end plate 13 of the motor accommodating housing member 6.
  • the rocking scroll side end face 22 is fixed at equal intervals according to the position of the cylindrical recess 62.
  • the pin 55 is fixed by being press-fitted into a pin mounting hole 63 formed in the end plate 13, and is fixed to the back surface of the portion of the end plate 13 where the reinforcing rib 57 is formed. .
  • the stator 16 of the electric motor 4 is fixed to the motor fixing portion 12 of the motor housing housing member 6 by interference fit, and the motor fixing portion 12 is expanded by the stator 16.
  • the low-rigidity portion 14 having a rigidity lower than that of the motor fixing portion 12 and the end plate 13 is elastically deformed along with the diameter expansion deformation of the motor fixing portion 12, and the diameter expansion deformation of the motor fixing portion 12 is low.
  • the electric scroll compressor 1 can suppress the deformation of the end plate 13 due to the diameter-enlarging deformation of the motor fixing portion 12 (the falling of the rocking scroll side end surface 22 and the like), and the rocking Since the support surface accuracy for supporting the turning motion of the scroll 21 can be improved, the swinging scroll 21 can be turned with high accuracy, and the performance and reliability of the compressor can be improved.
  • the electric scroll compressor 1 which concerns on this embodiment does the diameter expansion deformation of the motor fixing
  • the electric scroll compressor 1 includes a constricted portion 15 formed by the low-rigidity portion 14 being recessed radially inward between the motor fixing portion 12 and the end plate 13.
  • the length of the low-rigidity portion 14 on the cross-sectional view of FIG. 1 is longer than that when the constricted portion 15 is not provided, and the low-rigidity portion 14 easily deforms following the diameter expansion deformation of the motor fixing portion 12. It has become. Therefore, the electric scroll compressor 1 according to the present embodiment can reduce the stress generated in the connection portion between the low-rigidity portion 14 and the end plate 13 as compared with the case where the constricted portion 15 is not provided in the low-rigidity portion 14. The deformation of the end plate 13 due to the diameter expansion deformation of the fixing portion 12 can be further reduced.
  • a bolt housing portion 17 bulging radially outward is formed in a part of the constricted portion 15 of the low-rigidity portion 14, and the motor housing housing member 6 and the inverter housing are accommodated.
  • the shaft portion 10a of the fastening bolt 10 that fixes the housing member 7 is covered with the bolt housing portion 17, and the shaft portion 10a of the fastening bolt 10 is covered with the bolt housing portion 17 so that the shaft portion 10a of the fastening bolt 10 is not exposed to the outside air. Since it protects, the fall of durability resulting from corrosion etc. of the fastening bolt 10 can be prevented, and the torsional rigidity in the low rigidity portion 14 of the motor housing housing member 6 can be increased.
  • a pin & ring coupling is used as an anti-rotation mechanism, and the cylindrical recess 62 is formed in the substrate 21a of the orbiting scroll 21.
  • the weight of the orbiting scroll 21 can be reduced, and the driveability of the orbiting scroll 21 can be improved.
  • the pin 55 is press-fitted and fixed to the end plate 13 of the motor housing housing member 6 as a fixing member having higher rigidity than the substrate 21a of the swing scroll 21.
  • the electric scroll compressor 1 according to the present embodiment, together with the effect of improving the support surface accuracy of the end plate 13, enables the swing scroll 21 to turn with high accuracy, Reliability can be further improved
  • the pin 55 is fixed to the portion where the reinforcing rib 57 provided on the end plate 13 is formed. Therefore, the deformation of the portion where the pin 55 is press-fitted at the time of press-fitting and fixing the pin 55 or receiving a radial load can be avoided more reliably.
  • the positioning pin 33 for positioning the end plate 13 and the fixed scroll 11 is positioned away from the center of the shaft radially outward (a virtual circle 58 including a plurality of holes 52). Furthermore, since the positioning pin 33 is fixed to the end plate 13 whose deformation is suppressed by the function of the low-rigidity portion 14, the fixed scroll 11 is positioned to the end plate 13 with high accuracy. As a result, the electric scroll compressor 1 according to the present embodiment can combine the fixed scroll 11 and the orbiting scroll 21 with high precision, and in combination with the effects of the present embodiment, the performance of the compressor. And reliability can be further improved.
  • the electric scroll compressor 1 which concerns on this embodiment showed the example which engages the cylindrical recessed part 62 with the pin 55 via the ring member 61, in order to ensure a rotation prevention function, the ring member 61 is shown. Can be omitted. In such a case, the cylindrical recess 62 may be directly engaged with the pin 55.
  • the electric scroll compressor changed to such a configuration can obtain the same operation and effect as the electric scroll compressor 1 according to the present embodiment.
  • the electric scroll compressor 1 which concerns on this embodiment illustrated the structure which fixes the pin 55 of the autorotation prevention mechanisms to the end plate 13, and forms the cylindrical recessed part 62 in the rocking scroll 21, although this Without being limited thereto, the pin 55 may be fixed to the swing scroll 21 and the cylindrical recess 62 may be formed in the end plate 13.
  • pin & ring coupling is used as the rotation prevention mechanism in the electric scroll compressor 1 according to the present embodiment, a rotation prevention mechanism other than the pin & ring coupling may be used.
PCT/JP2015/085398 2014-12-24 2015-12-17 電動スクロール圧縮機 WO2016104336A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP15872905.3A EP3239526B1 (de) 2014-12-24 2015-12-17 Elektrisch betriebener spiralverdichter
JP2016566179A JP6587636B2 (ja) 2014-12-24 2015-12-17 電動スクロール圧縮機
CN201580068389.6A CN107002676B (zh) 2014-12-24 2015-12-17 电动涡旋压缩机

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-260226 2014-12-24
JP2014260226 2014-12-24

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WO2016104336A1 true WO2016104336A1 (ja) 2016-06-30

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EP (1) EP3239526B1 (de)
JP (1) JP6587636B2 (de)
CN (1) CN107002676B (de)
WO (1) WO2016104336A1 (de)

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CN107002676B (zh) 2019-09-03
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JP6587636B2 (ja) 2019-10-09
JPWO2016104336A1 (ja) 2017-10-05
CN107002676A (zh) 2017-08-01
EP3239526A4 (de) 2018-08-08

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